Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
/*-
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|
|
* BSD LICENSE
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|
*
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|
|
* Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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|
|
* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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|
|
* notice, this list of conditions and the following disclaimer in the
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|
|
* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/kernel.h>
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#include <sys/kthread.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/smp.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/taskqueue.h>
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#include <sys/time.h>
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#include <sys/eventhandler.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <machine/in_cksum.h>
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#include <net/bpf.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_arp.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/rss_config.h>
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#include <net/if_types.h>
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#include <net/if_vlan_var.h>
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#include <netinet/in_rss.h>
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#include <netinet/in_systm.h>
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#include <netinet/ip.h>
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#include <netinet/ip6.h>
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#include <netinet/tcp.h>
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#include <netinet/udp.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include "ena.h"
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#include "ena_sysctl.h"
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/*********************************************************
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|
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* Function prototypes
|
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|
*********************************************************/
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static int ena_probe(device_t);
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static void ena_intr_msix_mgmnt(void *);
|
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static int ena_allocate_pci_resources(struct ena_adapter*);
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static void ena_free_pci_resources(struct ena_adapter *);
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static int ena_change_mtu(if_t, int);
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static inline void ena_alloc_counters(counter_u64_t *, int);
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static inline void ena_free_counters(counter_u64_t *, int);
|
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static inline void ena_reset_counters(counter_u64_t *, int);
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static void ena_init_io_rings_common(struct ena_adapter *,
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|
struct ena_ring *, uint16_t);
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static int ena_init_io_rings(struct ena_adapter *);
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static void ena_free_io_ring_resources(struct ena_adapter *, unsigned int);
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static void ena_free_all_io_rings_resources(struct ena_adapter *);
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static int ena_setup_tx_dma_tag(struct ena_adapter *);
|
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|
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static int ena_free_tx_dma_tag(struct ena_adapter *);
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static int ena_setup_rx_dma_tag(struct ena_adapter *);
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static int ena_free_rx_dma_tag(struct ena_adapter *);
|
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static int ena_setup_tx_resources(struct ena_adapter *, int);
|
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static void ena_free_tx_resources(struct ena_adapter *, int);
|
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static int ena_setup_all_tx_resources(struct ena_adapter *);
|
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static void ena_free_all_tx_resources(struct ena_adapter *);
|
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static int ena_setup_rx_resources(struct ena_adapter *, unsigned int);
|
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static void ena_free_rx_resources(struct ena_adapter *, unsigned int);
|
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static int ena_setup_all_rx_resources(struct ena_adapter *);
|
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|
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static void ena_free_all_rx_resources(struct ena_adapter *);
|
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|
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static inline int ena_alloc_rx_mbuf(struct ena_adapter *, struct ena_ring *,
|
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|
|
struct ena_rx_buffer *);
|
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static void ena_free_rx_mbuf(struct ena_adapter *, struct ena_ring *,
|
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|
|
struct ena_rx_buffer *);
|
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|
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static int ena_refill_rx_bufs(struct ena_ring *, uint32_t);
|
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|
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static void ena_free_rx_bufs(struct ena_adapter *, unsigned int);
|
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|
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static void ena_refill_all_rx_bufs(struct ena_adapter *);
|
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|
|
static void ena_free_all_rx_bufs(struct ena_adapter *);
|
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|
|
static void ena_free_tx_bufs(struct ena_adapter *, unsigned int);
|
|
|
|
static void ena_free_all_tx_bufs(struct ena_adapter *);
|
|
|
|
static void ena_destroy_all_tx_queues(struct ena_adapter *);
|
|
|
|
static void ena_destroy_all_rx_queues(struct ena_adapter *);
|
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|
|
static void ena_destroy_all_io_queues(struct ena_adapter *);
|
|
|
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static int ena_create_io_queues(struct ena_adapter *);
|
|
|
|
static int ena_tx_cleanup(struct ena_ring *);
|
|
|
|
static int ena_rx_cleanup(struct ena_ring *);
|
|
|
|
static int validate_tx_req_id(struct ena_ring *, uint16_t);
|
|
|
|
static void ena_rx_hash_mbuf(struct ena_ring *, struct ena_com_rx_ctx *,
|
|
|
|
struct mbuf *);
|
|
|
|
static struct mbuf* ena_rx_mbuf(struct ena_ring *, struct ena_com_rx_buf_info *,
|
|
|
|
struct ena_com_rx_ctx *, uint16_t *);
|
|
|
|
static inline void ena_rx_checksum(struct ena_ring *, struct ena_com_rx_ctx *,
|
|
|
|
struct mbuf *);
|
|
|
|
static void ena_handle_msix(void *);
|
|
|
|
static int ena_enable_msix(struct ena_adapter *);
|
|
|
|
static void ena_setup_mgmnt_intr(struct ena_adapter *);
|
|
|
|
static void ena_setup_io_intr(struct ena_adapter *);
|
|
|
|
static int ena_request_mgmnt_irq(struct ena_adapter *);
|
|
|
|
static int ena_request_io_irq(struct ena_adapter *);
|
|
|
|
static void ena_free_mgmnt_irq(struct ena_adapter *);
|
|
|
|
static void ena_free_io_irq(struct ena_adapter *);
|
|
|
|
static void ena_free_irqs(struct ena_adapter*);
|
|
|
|
static void ena_disable_msix(struct ena_adapter *);
|
|
|
|
static void ena_unmask_all_io_irqs(struct ena_adapter *);
|
|
|
|
static int ena_rss_configure(struct ena_adapter *);
|
2017-05-30 11:58:51 +00:00
|
|
|
static void ena_update_hw_stats(void *, int);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
static int ena_up_complete(struct ena_adapter *);
|
|
|
|
static int ena_up(struct ena_adapter *);
|
|
|
|
static void ena_down(struct ena_adapter *);
|
|
|
|
static uint64_t ena_get_counter(if_t, ift_counter);
|
|
|
|
static int ena_media_change(if_t);
|
|
|
|
static void ena_media_status(if_t, struct ifmediareq *);
|
|
|
|
static void ena_init(void *);
|
|
|
|
static int ena_ioctl(if_t, u_long, caddr_t);
|
|
|
|
static int ena_get_dev_offloads(struct ena_com_dev_get_features_ctx *);
|
|
|
|
static void ena_update_host_info(struct ena_admin_host_info *, if_t);
|
|
|
|
static void ena_update_hwassist(struct ena_adapter *);
|
|
|
|
static int ena_setup_ifnet(device_t, struct ena_adapter *,
|
|
|
|
struct ena_com_dev_get_features_ctx *);
|
|
|
|
static void ena_tx_csum(struct ena_com_tx_ctx *, struct mbuf *);
|
2017-05-30 11:53:18 +00:00
|
|
|
static int ena_xmit_mbuf(struct ena_ring *, struct mbuf **);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
static void ena_start_xmit(struct ena_ring *);
|
|
|
|
static int ena_mq_start(if_t, struct mbuf *);
|
|
|
|
static void ena_deferred_mq_start(void *, int);
|
|
|
|
static void ena_qflush(if_t);
|
|
|
|
static int ena_calc_io_queue_num(struct ena_adapter *,
|
|
|
|
struct ena_com_dev_get_features_ctx *);
|
|
|
|
static int ena_calc_queue_size(struct ena_adapter *, uint16_t *,
|
|
|
|
uint16_t *, struct ena_com_dev_get_features_ctx *);
|
|
|
|
static int ena_rss_init_default(struct ena_adapter *);
|
|
|
|
static void ena_rss_init_default_deferred(void *);
|
|
|
|
static void ena_config_host_info(struct ena_com_dev *);
|
|
|
|
static int ena_attach(device_t);
|
|
|
|
static int ena_detach(device_t);
|
|
|
|
static int ena_device_init(struct ena_adapter *, device_t,
|
|
|
|
struct ena_com_dev_get_features_ctx *, int *);
|
|
|
|
static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *,
|
|
|
|
int);
|
|
|
|
static void ena_update_on_link_change(void *, struct ena_admin_aenq_entry *);
|
|
|
|
static void unimplemented_aenq_handler(void *,
|
|
|
|
struct ena_admin_aenq_entry *);
|
|
|
|
static void ena_timer_service(void *);
|
|
|
|
|
|
|
|
static char ena_version[] = DEVICE_NAME DRV_MODULE_NAME " v" DRV_MODULE_VERSION;
|
|
|
|
|
|
|
|
static SYSCTL_NODE(_hw, OID_AUTO, ena, CTLFLAG_RD, 0, "ENA driver parameters");
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Tuneable number of buffers in the buf-ring (drbr)
|
|
|
|
*/
|
|
|
|
static int ena_buf_ring_size = 4096;
|
|
|
|
SYSCTL_INT(_hw_ena, OID_AUTO, buf_ring_size, CTLFLAG_RWTUN,
|
|
|
|
&ena_buf_ring_size, 0, "Size of the bufring");
|
|
|
|
|
|
|
|
|
|
|
|
static ena_vendor_info_t ena_vendor_info_array[] = {
|
|
|
|
{ PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_PF, 0},
|
|
|
|
{ PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_LLQ_PF, 0},
|
|
|
|
{ PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_VF, 0},
|
|
|
|
{ PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_LLQ_VF, 0},
|
|
|
|
/* Last entry */
|
|
|
|
{ 0, 0, 0 }
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Contains pointers to event handlers, e.g. link state chage.
|
|
|
|
*/
|
|
|
|
static struct ena_aenq_handlers aenq_handlers;
|
|
|
|
|
|
|
|
void
|
|
|
|
ena_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nseg, int error)
|
|
|
|
{
|
|
|
|
if (error)
|
|
|
|
return;
|
|
|
|
*(bus_addr_t *) arg = segs[0].ds_addr;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
ena_dma_alloc(device_t dmadev, bus_size_t size,
|
|
|
|
ena_mem_handle_t *dma , int mapflags)
|
|
|
|
{
|
|
|
|
struct ena_adapter* adapter = device_get_softc(dmadev);
|
|
|
|
uint32_t maxsize = ((size - 1)/PAGE_SIZE + 1) * PAGE_SIZE;
|
|
|
|
uint64_t dma_space_addr = ENA_DMA_BIT_MASK(adapter->dma_width);
|
|
|
|
int error;
|
|
|
|
|
|
|
|
if (dma_space_addr == 0)
|
|
|
|
dma_space_addr = BUS_SPACE_MAXADDR;
|
|
|
|
error = bus_dma_tag_create(bus_get_dma_tag(dmadev), /* parent */
|
|
|
|
8, 0, /* alignment, bounds */
|
|
|
|
dma_space_addr, /* lowaddr */
|
|
|
|
dma_space_addr, /* highaddr */
|
|
|
|
NULL, NULL, /* filter, filterarg */
|
|
|
|
maxsize, /* maxsize */
|
|
|
|
1, /* nsegments */
|
|
|
|
maxsize, /* maxsegsize */
|
|
|
|
BUS_DMA_ALLOCNOW, /* flags */
|
|
|
|
NULL, /* lockfunc */
|
|
|
|
NULL, /* lockarg */
|
|
|
|
&dma->tag);
|
|
|
|
if (error) {
|
|
|
|
device_printf(dmadev,
|
|
|
|
"%s: bus_dma_tag_create failed: %d\n",
|
|
|
|
__func__, error);
|
|
|
|
goto fail_tag;
|
|
|
|
}
|
|
|
|
|
|
|
|
error = bus_dmamem_alloc(dma->tag, (void**) &dma->vaddr,
|
|
|
|
BUS_DMA_COHERENT | BUS_DMA_ZERO, &dma->map);
|
|
|
|
if (error) {
|
|
|
|
device_printf(dmadev,
|
|
|
|
"%s: bus_dmamem_alloc(%ju) failed: %d\n",
|
|
|
|
__func__, (uintmax_t)size, error);
|
|
|
|
goto fail_map_create;
|
|
|
|
}
|
|
|
|
|
|
|
|
dma->paddr = 0;
|
|
|
|
error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr,
|
|
|
|
size, ena_dmamap_callback, &dma->paddr, mapflags);
|
|
|
|
if (error || dma->paddr == 0) {
|
|
|
|
device_printf(dmadev,
|
|
|
|
"%s: bus_dmamap_load failed: %d\n",
|
|
|
|
__func__, error);
|
|
|
|
goto fail_map_load;
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
fail_map_load:
|
|
|
|
bus_dmamap_unload(dma->tag, dma->map);
|
|
|
|
fail_map_create:
|
|
|
|
bus_dmamem_free(dma->tag, dma->vaddr, dma->map);
|
|
|
|
bus_dma_tag_destroy(dma->tag);
|
|
|
|
fail_tag:
|
|
|
|
dma->tag = NULL;
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_allocate_pci_resources(struct ena_adapter* adapter)
|
|
|
|
{
|
|
|
|
device_t pdev = adapter->pdev;
|
|
|
|
int rid;
|
|
|
|
|
|
|
|
rid = PCIR_BAR(ENA_REG_BAR);
|
|
|
|
adapter->memory = NULL;
|
|
|
|
adapter->registers = bus_alloc_resource_any(pdev, SYS_RES_MEMORY,
|
|
|
|
&rid, RF_ACTIVE);
|
|
|
|
if (adapter->registers == NULL) {
|
|
|
|
device_printf(pdev, "Unable to allocate bus resource: "
|
|
|
|
"registers\n");
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_free_pci_resources(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
device_t pdev = adapter->pdev;
|
|
|
|
|
|
|
|
if (adapter->memory != NULL) {
|
|
|
|
bus_release_resource(pdev, SYS_RES_MEMORY,
|
|
|
|
PCIR_BAR(ENA_MEM_BAR), adapter->memory);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (adapter->registers != NULL) {
|
|
|
|
bus_release_resource(pdev, SYS_RES_MEMORY,
|
|
|
|
PCIR_BAR(ENA_REG_BAR), adapter->registers);
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_probe(device_t dev)
|
|
|
|
{
|
|
|
|
ena_vendor_info_t *ent;
|
|
|
|
char adapter_name[60];
|
|
|
|
uint16_t pci_vendor_id = 0;
|
|
|
|
uint16_t pci_device_id = 0;
|
|
|
|
|
|
|
|
pci_vendor_id = pci_get_vendor(dev);
|
|
|
|
pci_device_id = pci_get_device(dev);
|
|
|
|
|
|
|
|
ent = ena_vendor_info_array;
|
|
|
|
while (ent->vendor_id != 0) {
|
|
|
|
if ((pci_vendor_id == ent->vendor_id) &&
|
|
|
|
(pci_device_id == ent->device_id)) {
|
|
|
|
ena_trace(ENA_DBG, "vendor=%x device=%x ",
|
|
|
|
pci_vendor_id, pci_device_id);
|
|
|
|
|
|
|
|
sprintf(adapter_name, DEVICE_DESC);
|
|
|
|
device_set_desc_copy(dev, adapter_name);
|
|
|
|
return (BUS_PROBE_DEFAULT);
|
|
|
|
}
|
|
|
|
|
|
|
|
ent++;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_change_mtu(if_t ifp, int new_mtu)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = if_getsoftc(ifp);
|
|
|
|
struct ena_com_dev_get_features_ctx get_feat_ctx;
|
|
|
|
int rc, old_mtu, max_frame;
|
|
|
|
|
|
|
|
rc = ena_com_get_dev_attr_feat(adapter->ena_dev, &get_feat_ctx);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Cannot get attribute for ena device\n");
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Save old MTU in case of fail */
|
|
|
|
old_mtu = if_getmtu(ifp);
|
|
|
|
|
|
|
|
/* Change MTU and calculate max frame */
|
|
|
|
if_setmtu(ifp, new_mtu);
|
|
|
|
max_frame = ETHER_MAX_FRAME(ifp, ETHERTYPE_VLAN, 1);
|
|
|
|
|
|
|
|
if ((new_mtu < ENA_MIN_FRAME_LEN) ||
|
|
|
|
(new_mtu > get_feat_ctx.dev_attr.max_mtu) ||
|
|
|
|
(max_frame > ENA_MAX_FRAME_LEN)) {
|
|
|
|
device_printf(adapter->pdev, "Invalid MTU setting. "
|
|
|
|
"new_mtu: %d\n", new_mtu);
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = ena_com_set_dev_mtu(adapter->ena_dev, new_mtu);
|
|
|
|
if (rc != 0)
|
|
|
|
goto error;
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
error:
|
|
|
|
if_setmtu(ifp, old_mtu);
|
|
|
|
return (EINVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void
|
|
|
|
ena_alloc_counters(counter_u64_t *begin, int size)
|
|
|
|
{
|
|
|
|
counter_u64_t *end = (counter_u64_t *)((char *)begin + size);
|
|
|
|
|
|
|
|
for (; begin < end; ++begin)
|
|
|
|
*begin = counter_u64_alloc(M_WAITOK);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void
|
|
|
|
ena_free_counters(counter_u64_t *begin, int size)
|
|
|
|
{
|
|
|
|
counter_u64_t *end = (counter_u64_t *)((char *)begin + size);
|
|
|
|
|
|
|
|
for (; begin < end; ++begin)
|
|
|
|
counter_u64_free(*begin);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void
|
|
|
|
ena_reset_counters(counter_u64_t *begin, int size)
|
|
|
|
{
|
|
|
|
counter_u64_t *end = (counter_u64_t *)((char *)begin + size);
|
|
|
|
|
|
|
|
for (; begin < end; ++begin)
|
|
|
|
counter_u64_zero(*begin);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_init_io_rings_common(struct ena_adapter *adapter, struct ena_ring *ring,
|
|
|
|
uint16_t qid)
|
|
|
|
{
|
|
|
|
|
|
|
|
ring->qid = qid;
|
|
|
|
ring->adapter = adapter;
|
|
|
|
ring->ena_dev = adapter->ena_dev;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_init_io_rings(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_com_dev *ena_dev;
|
|
|
|
struct ena_ring *txr, *rxr;
|
|
|
|
struct ena_que *que;
|
|
|
|
int i;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
ena_dev = adapter->ena_dev;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_queues; i++) {
|
|
|
|
txr = &adapter->tx_ring[i];
|
|
|
|
rxr = &adapter->rx_ring[i];
|
|
|
|
|
|
|
|
/* TX/RX common ring state */
|
|
|
|
ena_init_io_rings_common(adapter, txr, i);
|
|
|
|
ena_init_io_rings_common(adapter, rxr, i);
|
|
|
|
|
|
|
|
/* TX specific ring state */
|
|
|
|
txr->ring_size = adapter->tx_ring_size;
|
|
|
|
txr->tx_max_header_size = ena_dev->tx_max_header_size;
|
|
|
|
txr->tx_mem_queue_type = ena_dev->tx_mem_queue_type;
|
|
|
|
txr->smoothed_interval =
|
|
|
|
ena_com_get_nonadaptive_moderation_interval_tx(ena_dev);
|
|
|
|
|
|
|
|
/* Allocate a buf ring */
|
|
|
|
txr->br = buf_ring_alloc(ena_buf_ring_size, M_DEVBUF,
|
|
|
|
M_WAITOK, &txr->ring_mtx);
|
|
|
|
if (txr->br == NULL) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Error while setting up bufring\n");
|
|
|
|
rc = ENOMEM;
|
|
|
|
goto err_bufr_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Alloc TX statistics. */
|
|
|
|
ena_alloc_counters((counter_u64_t *)&txr->tx_stats,
|
|
|
|
sizeof(txr->tx_stats));
|
|
|
|
|
|
|
|
/* RX specific ring state */
|
|
|
|
rxr->ring_size = adapter->rx_ring_size;
|
|
|
|
rxr->rx_small_copy_len = adapter->small_copy_len;
|
|
|
|
rxr->smoothed_interval =
|
|
|
|
ena_com_get_nonadaptive_moderation_interval_rx(ena_dev);
|
|
|
|
|
|
|
|
/* Alloc RX statistics. */
|
|
|
|
ena_alloc_counters((counter_u64_t *)&rxr->rx_stats,
|
|
|
|
sizeof(rxr->rx_stats));
|
|
|
|
|
|
|
|
/* Initialize locks */
|
|
|
|
snprintf(txr->mtx_name, nitems(txr->mtx_name), "%s:tx(%d)",
|
|
|
|
device_get_nameunit(adapter->pdev), i);
|
|
|
|
snprintf(rxr->mtx_name, nitems(rxr->mtx_name), "%s:rx(%d)",
|
|
|
|
device_get_nameunit(adapter->pdev), i);
|
|
|
|
|
|
|
|
mtx_init(&txr->ring_mtx, txr->mtx_name, NULL, MTX_DEF);
|
|
|
|
mtx_init(&rxr->ring_mtx, rxr->mtx_name, NULL, MTX_DEF);
|
|
|
|
|
|
|
|
que = &adapter->que[i];
|
|
|
|
que->adapter = adapter;
|
|
|
|
que->id = i;
|
|
|
|
que->tx_ring = txr;
|
|
|
|
que->rx_ring = rxr;
|
|
|
|
|
|
|
|
txr->que = que;
|
|
|
|
rxr->que = que;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_bufr_free:
|
|
|
|
while (i--)
|
|
|
|
ena_free_io_ring_resources(adapter, i);
|
|
|
|
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_free_io_ring_resources(struct ena_adapter *adapter, unsigned int qid)
|
|
|
|
{
|
|
|
|
struct ena_ring *txr = &adapter->tx_ring[qid];
|
|
|
|
struct ena_ring *rxr = &adapter->rx_ring[qid];
|
|
|
|
|
|
|
|
ena_free_counters((counter_u64_t *)&txr->tx_stats,
|
|
|
|
sizeof(txr->tx_stats));
|
|
|
|
ena_free_counters((counter_u64_t *)&rxr->rx_stats,
|
|
|
|
sizeof(rxr->rx_stats));
|
|
|
|
|
|
|
|
mtx_destroy(&txr->ring_mtx);
|
|
|
|
mtx_destroy(&rxr->ring_mtx);
|
|
|
|
|
|
|
|
drbr_free(txr->br, M_DEVBUF);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_free_all_io_rings_resources(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_queues; i++)
|
|
|
|
ena_free_io_ring_resources(adapter, i);
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_setup_tx_dma_tag(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
/* Create DMA tag for Tx buffers */
|
|
|
|
ret = bus_dma_tag_create(bus_get_dma_tag(adapter->pdev),
|
|
|
|
1, 0, /* alignment, bounds */
|
|
|
|
ENA_DMA_BIT_MASK(adapter->dma_width), /* lowaddr */
|
|
|
|
ENA_DMA_BIT_MASK(adapter->dma_width), /* highaddr */
|
|
|
|
NULL, NULL, /* filter, filterarg */
|
|
|
|
ENA_TSO_MAXSIZE, /* maxsize */
|
|
|
|
adapter->max_tx_sgl_size, /* nsegments */
|
|
|
|
ENA_TSO_MAXSIZE, /* maxsegsize */
|
|
|
|
0, /* flags */
|
|
|
|
NULL, /* lockfunc */
|
|
|
|
NULL, /* lockfuncarg */
|
|
|
|
&adapter->tx_buf_tag);
|
|
|
|
|
|
|
|
if (ret != 0)
|
|
|
|
device_printf(adapter->pdev, "Unable to create Tx DMA tag\n");
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_free_tx_dma_tag(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = bus_dma_tag_destroy(adapter->tx_buf_tag);
|
|
|
|
|
|
|
|
if (ret == 0)
|
|
|
|
adapter->tx_buf_tag = NULL;
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_setup_rx_dma_tag(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
/* Create DMA tag for Rx buffers*/
|
|
|
|
ret = bus_dma_tag_create(bus_get_dma_tag(adapter->pdev), /* parent */
|
|
|
|
1, 0, /* alignment, bounds */
|
|
|
|
ENA_DMA_BIT_MASK(adapter->dma_width), /* lowaddr */
|
|
|
|
ENA_DMA_BIT_MASK(adapter->dma_width), /* highaddr */
|
|
|
|
NULL, NULL, /* filter, filterarg */
|
|
|
|
MJUM16BYTES, /* maxsize */
|
|
|
|
1, /* nsegments */
|
|
|
|
MJUM16BYTES, /* maxsegsize */
|
|
|
|
0, /* flags */
|
|
|
|
NULL, /* lockfunc */
|
|
|
|
NULL, /* lockarg */
|
|
|
|
&adapter->rx_buf_tag);
|
|
|
|
|
|
|
|
if (ret != 0)
|
|
|
|
device_printf(adapter->pdev, "Unable to create Rx DMA tag\n");
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_free_rx_dma_tag(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = bus_dma_tag_destroy(adapter->rx_buf_tag);
|
|
|
|
|
|
|
|
if (ret == 0)
|
|
|
|
adapter->rx_buf_tag = NULL;
|
|
|
|
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_setup_tx_resources - allocate Tx resources (Descriptors)
|
|
|
|
* @adapter: network interface device structure
|
|
|
|
* @qid: queue index
|
|
|
|
*
|
|
|
|
* Returns 0 on success, otherwise on failure.
|
|
|
|
**/
|
|
|
|
static int
|
|
|
|
ena_setup_tx_resources(struct ena_adapter *adapter, int qid)
|
|
|
|
{
|
|
|
|
struct ena_que *que = &adapter->que[qid];
|
|
|
|
struct ena_ring *tx_ring = que->tx_ring;
|
|
|
|
int size, i, err;
|
|
|
|
#ifdef RSS
|
|
|
|
cpuset_t cpu_mask;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
size = sizeof(struct ena_tx_buffer) * tx_ring->ring_size;
|
|
|
|
|
|
|
|
tx_ring->tx_buffer_info = malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
|
|
|
|
if (!tx_ring->tx_buffer_info)
|
|
|
|
goto err_tx_buffer_info;
|
|
|
|
|
|
|
|
size = sizeof(uint16_t) * tx_ring->ring_size;
|
|
|
|
tx_ring->free_tx_ids = malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO);
|
|
|
|
if (!tx_ring->free_tx_ids)
|
|
|
|
goto err_tx_reqs;
|
|
|
|
|
|
|
|
/* Req id stack for TX OOO completions */
|
|
|
|
for (i = 0; i < tx_ring->ring_size; i++)
|
|
|
|
tx_ring->free_tx_ids[i] = i;
|
|
|
|
|
|
|
|
/* Reset TX statistics. */
|
|
|
|
ena_reset_counters((counter_u64_t *)&tx_ring->tx_stats,
|
|
|
|
sizeof(tx_ring->tx_stats));
|
|
|
|
|
|
|
|
tx_ring->next_to_use = 0;
|
|
|
|
tx_ring->next_to_clean = 0;
|
|
|
|
|
|
|
|
/* Make sure that drbr is empty */
|
2017-07-04 00:00:42 +00:00
|
|
|
ENA_RING_MTX_LOCK(tx_ring);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
drbr_flush(adapter->ifp, tx_ring->br);
|
2017-07-04 00:00:42 +00:00
|
|
|
ENA_RING_MTX_UNLOCK(tx_ring);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
|
|
|
|
/* ... and create the buffer DMA maps */
|
|
|
|
for (i = 0; i < tx_ring->ring_size; i++) {
|
|
|
|
err = bus_dmamap_create(adapter->tx_buf_tag, 0,
|
|
|
|
&tx_ring->tx_buffer_info[i].map);
|
|
|
|
if (err != 0) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Unable to create Tx DMA map for buffer %d\n", i);
|
|
|
|
goto err_tx_map;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate taskqueues */
|
|
|
|
TASK_INIT(&tx_ring->enqueue_task, 0, ena_deferred_mq_start, tx_ring);
|
|
|
|
tx_ring->enqueue_tq = taskqueue_create_fast("ena_tx_enque", M_NOWAIT,
|
|
|
|
taskqueue_thread_enqueue, &tx_ring->enqueue_tq);
|
|
|
|
if (tx_ring->enqueue_tq == NULL) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Unable to create taskqueue for enqueue task\n");
|
|
|
|
i = tx_ring->ring_size;
|
|
|
|
goto err_tx_map;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* RSS set cpu for thread */
|
|
|
|
#ifdef RSS
|
|
|
|
CPU_SETOF(que->cpu, &cpu_mask);
|
|
|
|
taskqueue_start_threads_cpuset(&tx_ring->enqueue_tq, 1, PI_NET,
|
|
|
|
&cpu_mask, "%s tx_ring enq (bucket %d)",
|
|
|
|
device_get_nameunit(adapter->pdev), que->cpu);
|
|
|
|
#else /* RSS */
|
|
|
|
taskqueue_start_threads(&tx_ring->enqueue_tq, 1, PI_NET,
|
|
|
|
"%s txeq %d", device_get_nameunit(adapter->pdev), que->cpu);
|
|
|
|
#endif /* RSS */
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
err_tx_map:
|
|
|
|
while (i--) {
|
|
|
|
bus_dmamap_destroy(adapter->tx_buf_tag,
|
|
|
|
tx_ring->tx_buffer_info[i].map);
|
|
|
|
}
|
|
|
|
ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->free_tx_ids);
|
|
|
|
err_tx_reqs:
|
|
|
|
ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->tx_buffer_info);
|
|
|
|
err_tx_buffer_info:
|
|
|
|
return (ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_free_tx_resources - Free Tx Resources per Queue
|
|
|
|
* @adapter: network interface device structure
|
|
|
|
* @qid: queue index
|
|
|
|
*
|
|
|
|
* Free all transmit software resources
|
|
|
|
**/
|
|
|
|
static void
|
|
|
|
ena_free_tx_resources(struct ena_adapter *adapter, int qid)
|
|
|
|
{
|
|
|
|
struct ena_ring *tx_ring = &adapter->tx_ring[qid];
|
|
|
|
|
|
|
|
while (taskqueue_cancel(tx_ring->enqueue_tq, &tx_ring->enqueue_task,
|
|
|
|
NULL))
|
|
|
|
taskqueue_drain(tx_ring->enqueue_tq, &tx_ring->enqueue_task);
|
|
|
|
|
|
|
|
taskqueue_free(tx_ring->enqueue_tq);
|
|
|
|
|
2017-07-04 00:00:42 +00:00
|
|
|
ENA_RING_MTX_LOCK(tx_ring);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
/* Flush buffer ring, */
|
|
|
|
drbr_flush(adapter->ifp, tx_ring->br);
|
|
|
|
|
|
|
|
/* Free buffer DMA maps, */
|
|
|
|
for (int i = 0; i < tx_ring->ring_size; i++) {
|
|
|
|
m_freem(tx_ring->tx_buffer_info[i].mbuf);
|
|
|
|
tx_ring->tx_buffer_info[i].mbuf = NULL;
|
|
|
|
bus_dmamap_unload(adapter->tx_buf_tag,
|
|
|
|
tx_ring->tx_buffer_info[i].map);
|
|
|
|
bus_dmamap_destroy(adapter->tx_buf_tag,
|
|
|
|
tx_ring->tx_buffer_info[i].map);
|
|
|
|
}
|
2017-05-30 12:00:56 +00:00
|
|
|
ENA_RING_MTX_UNLOCK(tx_ring);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
|
|
|
|
/* And free allocated memory. */
|
|
|
|
ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->tx_buffer_info);
|
|
|
|
tx_ring->tx_buffer_info = NULL;
|
|
|
|
|
|
|
|
ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->free_tx_ids);
|
|
|
|
tx_ring->free_tx_ids = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_setup_all_tx_resources - allocate all queues Tx resources
|
|
|
|
* @adapter: network interface device structure
|
|
|
|
*
|
|
|
|
* Returns 0 on success, otherwise on failure.
|
|
|
|
**/
|
|
|
|
static int
|
|
|
|
ena_setup_all_tx_resources(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i, rc;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_queues; i++) {
|
|
|
|
rc = ena_setup_tx_resources(adapter, i);
|
|
|
|
if (!rc)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Allocation for Tx Queue %u failed\n", i);
|
|
|
|
goto err_setup_tx;
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
err_setup_tx:
|
|
|
|
/* Rewind the index freeing the rings as we go */
|
|
|
|
while (i--)
|
|
|
|
ena_free_tx_resources(adapter, i);
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_free_all_tx_resources - Free Tx Resources for All Queues
|
|
|
|
* @adapter: network interface device structure
|
|
|
|
*
|
|
|
|
* Free all transmit software resources
|
|
|
|
**/
|
|
|
|
static void
|
|
|
|
ena_free_all_tx_resources(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_queues; i++)
|
|
|
|
ena_free_tx_resources(adapter, i);
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_setup_rx_resources - allocate Rx resources (Descriptors)
|
|
|
|
* @adapter: network interface device structure
|
|
|
|
* @qid: queue index
|
|
|
|
*
|
|
|
|
* Returns 0 on success, otherwise on failure.
|
|
|
|
**/
|
|
|
|
static int
|
|
|
|
ena_setup_rx_resources(struct ena_adapter *adapter, unsigned int qid)
|
|
|
|
{
|
|
|
|
struct ena_que *que = &adapter->que[qid];
|
|
|
|
struct ena_ring *rx_ring = que->rx_ring;
|
|
|
|
int size, err, i;
|
|
|
|
#ifdef RSS
|
|
|
|
cpuset_t cpu_mask;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
size = sizeof(struct ena_rx_buffer) * rx_ring->ring_size;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Alloc extra element so in rx path
|
|
|
|
* we can always prefetch rx_info + 1
|
|
|
|
*/
|
|
|
|
size += sizeof(struct ena_rx_buffer);
|
|
|
|
|
|
|
|
rx_ring->rx_buffer_info = ENA_MEM_ALLOC(adapter->ena_dev->dmadev, size);
|
|
|
|
if (!rx_ring->rx_buffer_info)
|
|
|
|
return (ENOMEM);
|
|
|
|
|
|
|
|
/* Reset RX statistics. */
|
|
|
|
ena_reset_counters((counter_u64_t *)&rx_ring->rx_stats,
|
|
|
|
sizeof(rx_ring->rx_stats));
|
|
|
|
|
|
|
|
rx_ring->next_to_clean = 0;
|
|
|
|
rx_ring->next_to_use = 0;
|
|
|
|
|
|
|
|
/* ... and create the buffer DMA maps */
|
|
|
|
for (i = 0; i < rx_ring->ring_size; i++) {
|
|
|
|
err = bus_dmamap_create(adapter->rx_buf_tag, 0,
|
|
|
|
&(rx_ring->rx_buffer_info[i].map));
|
|
|
|
if (err != 0) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Unable to create Rx DMA map for buffer %d\n", i);
|
|
|
|
goto err_rx_dma;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Create LRO for the ring */
|
|
|
|
if (adapter->ifp->if_capenable & IFCAP_LRO) {
|
|
|
|
int err = tcp_lro_init(&rx_ring->lro);
|
|
|
|
if (err) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"LRO[%d] Initialization failed!\n", qid);
|
|
|
|
} else {
|
|
|
|
ena_trace(ENA_INFO,
|
|
|
|
"RX Soft LRO[%d] Initialized\n", qid);
|
|
|
|
rx_ring->lro.ifp = adapter->ifp;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
err_rx_dma:
|
|
|
|
while (i--) {
|
|
|
|
bus_dmamap_destroy(adapter->rx_buf_tag,
|
|
|
|
rx_ring->rx_buffer_info[i].map);
|
|
|
|
}
|
|
|
|
|
|
|
|
ENA_MEM_FREE(adapter->ena_dev->dmadev, rx_ring->rx_buffer_info);
|
|
|
|
rx_ring->rx_buffer_info = NULL;
|
|
|
|
ena_trace(ENA_ALERT, "RX resource allocation fail");
|
|
|
|
return (ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_free_rx_resources - Free Rx Resources
|
|
|
|
* @adapter: network interface device structure
|
|
|
|
* @qid: queue index
|
|
|
|
*
|
|
|
|
* Free all receive software resources
|
|
|
|
**/
|
|
|
|
static void
|
|
|
|
ena_free_rx_resources(struct ena_adapter *adapter, unsigned int qid)
|
|
|
|
{
|
|
|
|
struct ena_ring *rx_ring = &adapter->rx_ring[qid];
|
|
|
|
|
|
|
|
ena_trace(ENA_INFO, "%s qid %d\n", __func__, qid);
|
|
|
|
|
|
|
|
/* Free buffer DMA maps, */
|
|
|
|
for (int i = 0; i < rx_ring->ring_size; i++) {
|
|
|
|
m_freem(rx_ring->rx_buffer_info[i].mbuf);
|
|
|
|
rx_ring->rx_buffer_info[i].mbuf = NULL;
|
|
|
|
bus_dmamap_unload(adapter->rx_buf_tag,
|
|
|
|
rx_ring->rx_buffer_info[i].map);
|
|
|
|
bus_dmamap_destroy(adapter->rx_buf_tag,
|
|
|
|
rx_ring->rx_buffer_info[i].map);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* free LRO resources, */
|
|
|
|
tcp_lro_free(&rx_ring->lro);
|
|
|
|
|
|
|
|
/* free allocated memory */
|
|
|
|
ENA_MEM_FREE(adapter->ena_dev->dmadev, rx_ring->rx_buffer_info);
|
|
|
|
rx_ring->rx_buffer_info = NULL;
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_setup_all_rx_resources - allocate all queues Rx resources
|
|
|
|
* @adapter: network interface device structure
|
|
|
|
*
|
|
|
|
* Returns 0 on success, otherwise on failure.
|
|
|
|
**/
|
|
|
|
static int
|
|
|
|
ena_setup_all_rx_resources(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i, rc = 0;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_queues; i++) {
|
|
|
|
rc = ena_setup_rx_resources(adapter, i);
|
|
|
|
if (!rc)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Allocation for Rx Queue %u failed\n", i);
|
|
|
|
goto err_setup_rx;
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
err_setup_rx:
|
|
|
|
/* rewind the index freeing the rings as we go */
|
|
|
|
while (i--)
|
|
|
|
ena_free_rx_resources(adapter, i);
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_free_all_rx_resources - Free Rx resources for all queues
|
|
|
|
* @adapter: network interface device structure
|
|
|
|
*
|
|
|
|
* Free all receive software resources
|
|
|
|
**/
|
|
|
|
static void
|
|
|
|
ena_free_all_rx_resources(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_queues; i++)
|
|
|
|
ena_free_rx_resources(adapter, i);
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int
|
|
|
|
ena_alloc_rx_mbuf(struct ena_adapter *adapter,
|
|
|
|
struct ena_ring *rx_ring, struct ena_rx_buffer *rx_info)
|
|
|
|
{
|
|
|
|
struct ena_com_buf *ena_buf;
|
|
|
|
bus_dma_segment_t segs[1];
|
|
|
|
int nsegs, error;
|
|
|
|
|
|
|
|
/* if previous allocated frag is not used */
|
|
|
|
if (rx_info->mbuf != NULL)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
ENA_RING_MTX_LOCK(rx_ring);
|
|
|
|
/* Get mbuf using UMA allocator */
|
|
|
|
rx_info->mbuf = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUM16BYTES);
|
|
|
|
ENA_RING_MTX_UNLOCK(rx_ring);
|
|
|
|
|
|
|
|
if (!rx_info->mbuf) {
|
|
|
|
counter_u64_add(rx_ring->rx_stats.mbuf_alloc_fail, 1);
|
|
|
|
return (ENOMEM);
|
|
|
|
}
|
|
|
|
/* Set mbuf length*/
|
|
|
|
rx_info->mbuf->m_pkthdr.len = rx_info->mbuf->m_len = MJUM16BYTES;
|
|
|
|
|
|
|
|
/* Map packets for DMA */
|
|
|
|
ena_trace(ENA_DBG | ENA_RSC | ENA_RXPTH,
|
|
|
|
"Using tag %p for buffers' DMA mapping, mbuf %p len: %d",
|
|
|
|
adapter->rx_buf_tag,rx_info->mbuf, rx_info->mbuf->m_len);
|
|
|
|
error = bus_dmamap_load_mbuf_sg(adapter->rx_buf_tag, rx_info->map,
|
|
|
|
rx_info->mbuf, segs, &nsegs, BUS_DMA_NOWAIT);
|
|
|
|
if (error || (nsegs != 1)) {
|
|
|
|
device_printf(adapter->pdev, "failed to map mbuf, error: %d, "
|
|
|
|
"nsegs: %d\n", error, nsegs);
|
|
|
|
counter_u64_add(rx_ring->rx_stats.dma_mapping_err, 1);
|
|
|
|
goto exit;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
bus_dmamap_sync(adapter->rx_buf_tag, rx_info->map, BUS_DMASYNC_PREREAD);
|
|
|
|
|
|
|
|
ena_buf = &rx_info->ena_buf;
|
|
|
|
ena_buf->paddr = segs[0].ds_addr;
|
|
|
|
ena_buf->len = MJUM16BYTES;
|
|
|
|
|
|
|
|
ena_trace(ENA_DBG | ENA_RSC | ENA_RXPTH,
|
|
|
|
"ALLOC RX BUF: mbuf %p, rx_info %p, len %d, paddr %#jx\n",
|
|
|
|
rx_info->mbuf, rx_info,ena_buf->len, (uintmax_t)ena_buf->paddr);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
exit:
|
|
|
|
m_freem(rx_info->mbuf);
|
|
|
|
rx_info->mbuf = NULL;
|
|
|
|
return (EFAULT);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_free_rx_mbuf(struct ena_adapter *adapter, struct ena_ring *rx_ring,
|
|
|
|
struct ena_rx_buffer *rx_info)
|
|
|
|
{
|
|
|
|
|
|
|
|
if (!rx_info->mbuf)
|
|
|
|
return;
|
|
|
|
|
|
|
|
bus_dmamap_unload(adapter->rx_buf_tag, rx_info->map);
|
|
|
|
m_freem(rx_info->mbuf);
|
|
|
|
rx_info->mbuf = NULL;
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_refill_rx_bufs - Refills ring with descriptors
|
|
|
|
* @rx_ring: the ring which we want to feed with free descriptors
|
|
|
|
* @num: number of descriptors to refill
|
|
|
|
* Refills the ring with newly allocated DMA-mapped mbufs for receiving
|
|
|
|
**/
|
|
|
|
static int
|
|
|
|
ena_refill_rx_bufs(struct ena_ring *rx_ring, uint32_t num)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = rx_ring->adapter;
|
|
|
|
uint16_t next_to_use;
|
|
|
|
uint32_t i;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
ena_trace(ENA_DBG | ENA_RXPTH | ENA_RSC, "refill qid: %d",
|
|
|
|
rx_ring->qid);
|
|
|
|
|
|
|
|
next_to_use = rx_ring->next_to_use;
|
|
|
|
|
|
|
|
for (i = 0; i < num; i++) {
|
|
|
|
ena_trace(ENA_DBG | ENA_RXPTH | ENA_RSC,
|
|
|
|
"RX buffer - next to use: %d", next_to_use);
|
|
|
|
|
|
|
|
struct ena_rx_buffer *rx_info =
|
|
|
|
&rx_ring->rx_buffer_info[next_to_use];
|
|
|
|
|
|
|
|
rc = ena_alloc_rx_mbuf(adapter, rx_ring, rx_info);
|
|
|
|
if (rc < 0) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"failed to alloc buffer for rx queue\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
rc = ena_com_add_single_rx_desc(rx_ring->ena_com_io_sq,
|
|
|
|
&rx_info->ena_buf, next_to_use);
|
|
|
|
if (unlikely(rc)) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"failed to add buffer for rx queue %d\n",
|
|
|
|
rx_ring->qid);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
next_to_use = ENA_RX_RING_IDX_NEXT(next_to_use,
|
|
|
|
rx_ring->ring_size);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i < num) {
|
|
|
|
counter_u64_add(rx_ring->rx_stats.refil_partial, 1);
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"refilled rx queue %d with %d pages only\n",
|
|
|
|
rx_ring->qid, i);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i != 0) {
|
|
|
|
wmb();
|
|
|
|
ena_com_write_sq_doorbell(rx_ring->ena_com_io_sq);
|
|
|
|
}
|
|
|
|
rx_ring->next_to_use = next_to_use;
|
|
|
|
return (i);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_free_rx_bufs(struct ena_adapter *adapter, unsigned int qid)
|
|
|
|
{
|
|
|
|
struct ena_ring *rx_ring = &adapter->rx_ring[qid];
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
for (i = 0; i < rx_ring->ring_size; i++) {
|
|
|
|
struct ena_rx_buffer *rx_info = &rx_ring->rx_buffer_info[i];
|
|
|
|
|
|
|
|
if (rx_info->mbuf)
|
|
|
|
ena_free_rx_mbuf(adapter, rx_ring, rx_info);
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_refill_all_rx_bufs - allocate all queues Rx buffers
|
|
|
|
* @adapter: network interface device structure
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
ena_refill_all_rx_bufs(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_ring *rx_ring;
|
|
|
|
int i, rc, bufs_num;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_queues; i++) {
|
|
|
|
rx_ring = &adapter->rx_ring[i];
|
|
|
|
bufs_num = rx_ring->ring_size - 1;
|
|
|
|
rc = ena_refill_rx_bufs(rx_ring, bufs_num);
|
|
|
|
|
|
|
|
if (unlikely(rc != bufs_num))
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"refilling Queue %d failed. allocated %d buffers"
|
|
|
|
" from: %d\n", i, rc, bufs_num);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_free_all_rx_bufs(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_queues; i++)
|
|
|
|
ena_free_rx_bufs(adapter, i);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_free_tx_bufs - Free Tx Buffers per Queue
|
|
|
|
* @adapter: network interface device structure
|
|
|
|
* @qid: queue index
|
|
|
|
**/
|
|
|
|
static void
|
|
|
|
ena_free_tx_bufs(struct ena_adapter *adapter, unsigned int qid)
|
|
|
|
{
|
|
|
|
struct ena_ring *tx_ring = &adapter->tx_ring[qid];
|
|
|
|
|
2017-05-30 12:00:56 +00:00
|
|
|
ENA_RING_MTX_LOCK(tx_ring);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
for (int i = 0; i < tx_ring->ring_size; i++) {
|
|
|
|
struct ena_tx_buffer *tx_info = &tx_ring->tx_buffer_info[i];
|
|
|
|
|
|
|
|
if (tx_info->mbuf == NULL)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
ena_trace(ENA_DBG | ENA_TXPTH | ENA_RSC,
|
|
|
|
"free uncompleted Tx mbufs qid[%d] idx: 0x%x", qid, i);
|
|
|
|
|
|
|
|
bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map);
|
|
|
|
m_free(tx_info->mbuf);
|
|
|
|
tx_info->mbuf = NULL;
|
|
|
|
}
|
2017-05-30 12:00:56 +00:00
|
|
|
ENA_RING_MTX_UNLOCK(tx_ring);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_free_all_tx_bufs(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
|
|
|
|
for (int i = 0; i < adapter->num_queues; i++)
|
|
|
|
ena_free_tx_bufs(adapter, i);
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_destroy_all_tx_queues(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
uint16_t ena_qid;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_queues; i++) {
|
|
|
|
ena_qid = ENA_IO_TXQ_IDX(i);
|
|
|
|
ena_com_destroy_io_queue(adapter->ena_dev, ena_qid);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_destroy_all_rx_queues(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
uint16_t ena_qid;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < adapter->num_queues; i++) {
|
|
|
|
ena_qid = ENA_IO_RXQ_IDX(i);
|
|
|
|
ena_com_destroy_io_queue(adapter->ena_dev, ena_qid);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_destroy_all_io_queues(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
ena_destroy_all_tx_queues(adapter);
|
|
|
|
ena_destroy_all_rx_queues(adapter);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
validate_tx_req_id(struct ena_ring *tx_ring, uint16_t req_id)
|
|
|
|
{
|
|
|
|
struct ena_tx_buffer *tx_info = NULL;
|
|
|
|
|
|
|
|
if (likely(req_id < tx_ring->ring_size)) {
|
|
|
|
tx_info = &tx_ring->tx_buffer_info[req_id];
|
|
|
|
if (tx_info->mbuf)
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
counter_u64_add(tx_ring->tx_stats.bad_req_id, 1);
|
|
|
|
|
|
|
|
return (EFAULT);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_create_io_queues(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_com_dev *ena_dev = adapter->ena_dev;
|
|
|
|
struct ena_com_create_io_ctx ctx;
|
|
|
|
struct ena_ring *ring;
|
|
|
|
uint16_t ena_qid;
|
|
|
|
uint32_t msix_vector;
|
|
|
|
int rc, i;
|
|
|
|
|
|
|
|
/* Create TX queues */
|
|
|
|
for (i = 0; i < adapter->num_queues; i++) {
|
|
|
|
msix_vector = ENA_IO_IRQ_IDX(i);
|
|
|
|
ena_qid = ENA_IO_TXQ_IDX(i);
|
|
|
|
ctx.mem_queue_type = ena_dev->tx_mem_queue_type;
|
|
|
|
ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX;
|
|
|
|
ctx.queue_size = adapter->tx_ring_size;
|
|
|
|
ctx.msix_vector = msix_vector;
|
|
|
|
ctx.qid = ena_qid;
|
|
|
|
rc = ena_com_create_io_queue(ena_dev, &ctx);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Failed to create io TX queue #%d rc: %d\n", i, rc);
|
|
|
|
goto err_tx;
|
|
|
|
}
|
|
|
|
ring = &adapter->tx_ring[i];
|
|
|
|
rc = ena_com_get_io_handlers(ena_dev, ena_qid,
|
|
|
|
&ring->ena_com_io_sq,
|
|
|
|
&ring->ena_com_io_cq);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Failed to get TX queue handlers. TX queue num"
|
|
|
|
" %d rc: %d\n", i, rc);
|
|
|
|
ena_com_destroy_io_queue(ena_dev, ena_qid);
|
|
|
|
goto err_tx;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Create RX queues */
|
|
|
|
for (i = 0; i < adapter->num_queues; i++) {
|
|
|
|
msix_vector = ENA_IO_IRQ_IDX(i);
|
|
|
|
ena_qid = ENA_IO_RXQ_IDX(i);
|
|
|
|
ctx.mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
|
|
|
|
ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX;
|
|
|
|
ctx.queue_size = adapter->rx_ring_size;
|
|
|
|
ctx.msix_vector = msix_vector;
|
|
|
|
ctx.qid = ena_qid;
|
|
|
|
rc = ena_com_create_io_queue(ena_dev, &ctx);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Failed to create io RX queue[%d] rc: %d\n", i, rc);
|
|
|
|
goto err_rx;
|
|
|
|
}
|
|
|
|
|
|
|
|
ring = &adapter->rx_ring[i];
|
|
|
|
rc = ena_com_get_io_handlers(ena_dev, ena_qid,
|
|
|
|
&ring->ena_com_io_sq,
|
|
|
|
&ring->ena_com_io_cq);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Failed to get RX queue handlers. RX queue num"
|
|
|
|
" %d rc: %d\n", i, rc);
|
|
|
|
ena_com_destroy_io_queue(ena_dev, ena_qid);
|
|
|
|
goto err_rx;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
err_rx:
|
|
|
|
while (i--)
|
|
|
|
ena_com_destroy_io_queue(ena_dev, ENA_IO_RXQ_IDX(i));
|
|
|
|
i = adapter->num_queues;
|
|
|
|
err_tx:
|
|
|
|
while (i--)
|
|
|
|
ena_com_destroy_io_queue(ena_dev, ENA_IO_TXQ_IDX(i));
|
|
|
|
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_tx_cleanup - clear sent packets and corresponding descriptors
|
|
|
|
* @tx_ring: ring for which we want to clean packets
|
|
|
|
*
|
|
|
|
* Once packets are sent, we ask the device in a loop for no longer used
|
|
|
|
* descriptors. We find the related mbuf chain in a map (index in an array)
|
|
|
|
* and free it, then update ring state.
|
|
|
|
* This is performed in "endless" loop, updating ring pointers every
|
|
|
|
* TX_COMMIT. The first check of free descriptor is performed before the actual
|
|
|
|
* loop, then repeated at the loop end.
|
|
|
|
**/
|
|
|
|
static int
|
|
|
|
ena_tx_cleanup(struct ena_ring *tx_ring)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter;
|
|
|
|
struct ena_com_io_cq* io_cq;
|
|
|
|
uint16_t next_to_clean;
|
|
|
|
uint16_t req_id;
|
|
|
|
uint16_t ena_qid;
|
|
|
|
unsigned int total_done = 0;
|
|
|
|
int rc;
|
|
|
|
int commit = TX_COMMIT;
|
|
|
|
int budget = TX_BUDGET;
|
|
|
|
int work_done;
|
|
|
|
|
|
|
|
adapter = tx_ring->que->adapter;
|
|
|
|
ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id);
|
|
|
|
io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
|
|
|
|
next_to_clean = tx_ring->next_to_clean;
|
|
|
|
|
|
|
|
do {
|
|
|
|
struct ena_tx_buffer *tx_info;
|
|
|
|
struct mbuf *mbuf;
|
|
|
|
|
|
|
|
rc = ena_com_tx_comp_req_id_get(io_cq, &req_id);
|
|
|
|
if (rc != 0)
|
|
|
|
break;
|
|
|
|
|
|
|
|
rc = validate_tx_req_id(tx_ring, req_id);
|
|
|
|
if (rc)
|
|
|
|
break;
|
|
|
|
|
|
|
|
tx_info = &tx_ring->tx_buffer_info[req_id];
|
|
|
|
|
|
|
|
mbuf = tx_info->mbuf;
|
|
|
|
|
|
|
|
tx_info->mbuf = NULL;
|
|
|
|
bintime_clear(&tx_info->timestamp);
|
|
|
|
|
|
|
|
if (tx_info->num_of_bufs != 0) {
|
|
|
|
/* Map is no longer required */
|
|
|
|
bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map);
|
|
|
|
}
|
|
|
|
|
|
|
|
m_freem(mbuf);
|
|
|
|
|
|
|
|
total_done += tx_info->tx_descs;
|
|
|
|
|
|
|
|
tx_ring->free_tx_ids[next_to_clean] = req_id;
|
|
|
|
next_to_clean = ENA_TX_RING_IDX_NEXT(next_to_clean,
|
|
|
|
tx_ring->ring_size);
|
|
|
|
|
|
|
|
if (--commit == 0) {
|
|
|
|
commit = TX_COMMIT;
|
|
|
|
/* update ring state every TX_COMMIT descriptor */
|
|
|
|
tx_ring->next_to_clean = next_to_clean;
|
|
|
|
ena_com_comp_ack(&adapter->ena_dev->io_sq_queues[ena_qid], total_done);
|
|
|
|
ena_com_update_dev_comp_head(io_cq);
|
|
|
|
total_done = 0;
|
|
|
|
}
|
|
|
|
} while (--budget);
|
|
|
|
|
|
|
|
work_done = TX_BUDGET - budget;
|
|
|
|
|
|
|
|
/* If there is still something to commit update ring state */
|
|
|
|
if (commit != TX_COMMIT) {
|
|
|
|
tx_ring->next_to_clean = next_to_clean;
|
|
|
|
ena_com_comp_ack(&adapter->ena_dev->io_sq_queues[ena_qid], total_done);
|
|
|
|
ena_com_update_dev_comp_head(io_cq);
|
|
|
|
}
|
|
|
|
|
|
|
|
taskqueue_enqueue(tx_ring->enqueue_tq, &tx_ring->enqueue_task);
|
|
|
|
|
|
|
|
return (work_done);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_rx_hash_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_ctx *ena_rx_ctx,
|
|
|
|
struct mbuf *mbuf)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = rx_ring->adapter;
|
|
|
|
|
|
|
|
if (adapter->rss_support) {
|
|
|
|
mbuf->m_pkthdr.flowid = ena_rx_ctx->hash;
|
|
|
|
|
|
|
|
if (ena_rx_ctx->frag &&
|
|
|
|
ena_rx_ctx->l3_proto != ENA_ETH_IO_L4_PROTO_UNKNOWN) {
|
|
|
|
M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (ena_rx_ctx->l3_proto) {
|
|
|
|
case ENA_ETH_IO_L3_PROTO_IPV4:
|
|
|
|
switch (ena_rx_ctx->l4_proto) {
|
|
|
|
case ENA_ETH_IO_L4_PROTO_TCP:
|
|
|
|
M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV4);
|
|
|
|
break;
|
|
|
|
case ENA_ETH_IO_L4_PROTO_UDP:
|
|
|
|
M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV4);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV4);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case ENA_ETH_IO_L3_PROTO_IPV6:
|
|
|
|
switch (ena_rx_ctx->l4_proto) {
|
|
|
|
case ENA_ETH_IO_L4_PROTO_TCP:
|
|
|
|
M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV6);
|
|
|
|
break;
|
|
|
|
case ENA_ETH_IO_L4_PROTO_UDP:
|
|
|
|
M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV6);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV6);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case ENA_ETH_IO_L3_PROTO_UNKNOWN:
|
|
|
|
M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
mbuf->m_pkthdr.flowid = rx_ring->qid;
|
|
|
|
M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_rx_mbuf - assemble mbuf from descriptors
|
|
|
|
* @rx_ring: ring for which we want to clean packets
|
|
|
|
* @ena_bufs: buffer info
|
|
|
|
* @ena_rx_ctx: metadata for this packet(s)
|
|
|
|
* @next_to_clean: ring pointer
|
|
|
|
*
|
|
|
|
**/
|
|
|
|
static struct mbuf*
|
|
|
|
ena_rx_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_buf_info *ena_bufs,
|
|
|
|
struct ena_com_rx_ctx *ena_rx_ctx, uint16_t *next_to_clean)
|
|
|
|
{
|
|
|
|
struct mbuf *mbuf;
|
|
|
|
struct ena_rx_buffer *rx_info;
|
|
|
|
struct ena_adapter *adapter;
|
|
|
|
unsigned int len, buf = 0;
|
|
|
|
unsigned int descs = ena_rx_ctx->descs;
|
|
|
|
|
|
|
|
adapter = rx_ring->adapter;
|
|
|
|
rx_info = &rx_ring->rx_buffer_info[*next_to_clean];
|
|
|
|
|
|
|
|
ENA_ASSERT(rx_info->mbuf, "Invalid alloc frag buffer\n");
|
|
|
|
|
|
|
|
len = ena_bufs[0].len;
|
|
|
|
ena_trace(ENA_DBG | ENA_RXPTH, "rx_info %p, mbuf %p, paddr %jx",
|
|
|
|
rx_info, rx_info->mbuf, (uintmax_t)rx_info->ena_buf.paddr);
|
|
|
|
|
|
|
|
mbuf = rx_info->mbuf;
|
|
|
|
mbuf->m_flags |= M_PKTHDR;
|
|
|
|
mbuf->m_pkthdr.len = len;
|
|
|
|
mbuf->m_len = len;
|
|
|
|
mbuf->m_pkthdr.rcvif = rx_ring->que->adapter->ifp;
|
|
|
|
|
|
|
|
/* Fill mbuf with hash key and it's interpretation for optimization */
|
|
|
|
ena_rx_hash_mbuf(rx_ring, ena_rx_ctx, mbuf);
|
|
|
|
|
|
|
|
ena_trace(ENA_DBG | ENA_RXPTH, "rx mbuf 0x%p, flags=0x%x, len: %d",
|
|
|
|
mbuf, mbuf->m_flags, mbuf->m_pkthdr.len);
|
|
|
|
|
|
|
|
/* DMA address is not needed anymore, unmap it */
|
|
|
|
bus_dmamap_unload(rx_ring->adapter->rx_buf_tag, rx_info->map);
|
|
|
|
|
|
|
|
rx_info->mbuf = NULL;
|
|
|
|
*next_to_clean = ENA_RX_RING_IDX_NEXT(*next_to_clean,
|
|
|
|
rx_ring->ring_size);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* While we have more than 1 descriptors for one rcvd packet, append
|
|
|
|
* other mbufs to the main one
|
|
|
|
*/
|
|
|
|
while (--descs) {
|
|
|
|
rx_info = &rx_ring->rx_buffer_info[*next_to_clean];
|
|
|
|
len = ena_bufs[++buf].len;
|
|
|
|
|
|
|
|
if (!m_append(mbuf, len, rx_info->mbuf->m_data)) {
|
|
|
|
counter_u64_add(rx_ring->rx_stats.mbuf_alloc_fail, 1);
|
|
|
|
ena_trace(ENA_WARNING, "Failed to append Rx mbuf %p",
|
|
|
|
mbuf);
|
|
|
|
}
|
|
|
|
/* Free already appended mbuf, it won't be useful anymore */
|
|
|
|
bus_dmamap_unload(rx_ring->adapter->rx_buf_tag, rx_info->map);
|
|
|
|
m_freem(rx_info->mbuf);
|
|
|
|
rx_info->mbuf = NULL;
|
|
|
|
|
|
|
|
*next_to_clean = ENA_RX_RING_IDX_NEXT(*next_to_clean,
|
|
|
|
rx_ring->ring_size);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (mbuf);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_rx_checksum - indicate in mbuf if hw indicated a good cksum
|
|
|
|
**/
|
|
|
|
static inline void
|
|
|
|
ena_rx_checksum(struct ena_ring *rx_ring, struct ena_com_rx_ctx *ena_rx_ctx,
|
|
|
|
struct mbuf *mbuf)
|
|
|
|
{
|
|
|
|
|
|
|
|
/* if IP and error */
|
|
|
|
if ((ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV4) &&
|
|
|
|
(ena_rx_ctx->l3_csum_err)) {
|
|
|
|
/* ipv4 checksum error */
|
|
|
|
mbuf->m_pkthdr.csum_flags = 0;
|
|
|
|
counter_u64_add(rx_ring->rx_stats.bad_csum, 1);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* if TCP/UDP */
|
|
|
|
if ((ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_TCP) ||
|
|
|
|
(ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_UDP)) {
|
|
|
|
if (ena_rx_ctx->l4_csum_err) {
|
|
|
|
/* TCP/UDP checksum error */
|
|
|
|
mbuf->m_pkthdr.csum_flags = 0;
|
|
|
|
counter_u64_add(rx_ring->rx_stats.bad_csum, 1);
|
|
|
|
} else {
|
|
|
|
mbuf->m_pkthdr.csum_flags = CSUM_IP_CHECKED;
|
|
|
|
mbuf->m_pkthdr.csum_flags |= CSUM_IP_VALID;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_rx_cleanup - handle rx irq
|
|
|
|
* @arg: ring for which irq is being handled
|
|
|
|
**/
|
|
|
|
static int
|
|
|
|
ena_rx_cleanup(struct ena_ring *rx_ring)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter;
|
|
|
|
struct mbuf *mbuf;
|
|
|
|
struct ena_com_rx_ctx ena_rx_ctx;
|
|
|
|
struct ena_com_io_cq* io_cq;
|
|
|
|
struct ena_com_io_sq* io_sq;
|
|
|
|
/* struct ena_eth_io_intr_reg intr_reg; */
|
|
|
|
if_t ifp;
|
|
|
|
uint16_t ena_qid;
|
|
|
|
uint16_t next_to_clean;
|
|
|
|
uint32_t refill_required;
|
|
|
|
uint32_t refill_threshold;
|
|
|
|
uint32_t do_if_input = 0;
|
|
|
|
unsigned int qid;
|
|
|
|
int rc;
|
|
|
|
int budget = RX_BUDGET;
|
|
|
|
|
|
|
|
adapter = rx_ring->que->adapter;
|
|
|
|
ifp = adapter->ifp;
|
|
|
|
qid = rx_ring->que->id;
|
|
|
|
ena_qid = ENA_IO_RXQ_IDX(qid);
|
|
|
|
io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
|
|
|
|
io_sq = &adapter->ena_dev->io_sq_queues[ena_qid];
|
|
|
|
next_to_clean = rx_ring->next_to_clean;
|
|
|
|
|
|
|
|
do {
|
|
|
|
ena_rx_ctx.ena_bufs = rx_ring->ena_bufs;
|
|
|
|
ena_rx_ctx.max_bufs = adapter->max_rx_sgl_size;
|
|
|
|
ena_rx_ctx.descs = 0;
|
|
|
|
rc = ena_com_rx_pkt(io_cq, io_sq, &ena_rx_ctx);
|
|
|
|
|
|
|
|
if (unlikely(rc))
|
|
|
|
goto error;
|
|
|
|
|
|
|
|
if (unlikely(ena_rx_ctx.descs == 0))
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* Receive mbuf from the ring */
|
|
|
|
mbuf = ena_rx_mbuf(rx_ring, rx_ring->ena_bufs,
|
|
|
|
&ena_rx_ctx, &next_to_clean);
|
|
|
|
|
|
|
|
/* Exit if we failed to retrieve a buffer */
|
|
|
|
if (unlikely(!mbuf)) {
|
|
|
|
next_to_clean = ENA_RX_RING_IDX_ADD(next_to_clean,
|
|
|
|
ena_rx_ctx.descs, rx_ring->ring_size);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
ena_trace(ENA_DBG | ENA_RXPTH, "Rx: %d bytes",
|
|
|
|
mbuf->m_pkthdr.len);
|
|
|
|
|
|
|
|
if ((ifp->if_capenable & IFCAP_RXCSUM) ||
|
|
|
|
(ifp->if_capenable & IFCAP_RXCSUM_IPV6)) {
|
|
|
|
ena_rx_checksum(rx_ring, &ena_rx_ctx, mbuf);
|
|
|
|
}
|
|
|
|
|
|
|
|
counter_u64_add(rx_ring->rx_stats.bytes, mbuf->m_pkthdr.len);
|
|
|
|
/*
|
|
|
|
* LRO is only for IP/TCP packets and TCP checksum of the packet
|
|
|
|
* should be computed by hardware.
|
|
|
|
*/
|
|
|
|
do_if_input = 1;
|
|
|
|
if ((ifp->if_capenable & IFCAP_LRO) &&
|
|
|
|
(mbuf->m_pkthdr.csum_flags & CSUM_IP_VALID) &&
|
|
|
|
ena_rx_ctx.l4_proto == ENA_ETH_IO_L4_PROTO_TCP) {
|
|
|
|
/*
|
|
|
|
* Send to the stack if:
|
|
|
|
* - LRO not enabled, or
|
|
|
|
* - no LRO resources, or
|
|
|
|
* - lro enqueue fails
|
|
|
|
*/
|
|
|
|
if (rx_ring->lro.lro_cnt != 0 &&
|
|
|
|
tcp_lro_rx(&rx_ring->lro, mbuf, 0) == 0)
|
|
|
|
do_if_input = 0;
|
|
|
|
}
|
|
|
|
if (do_if_input) {
|
|
|
|
ena_trace(ENA_DBG | ENA_RXPTH, "calling if_input() with mbuf %p",
|
|
|
|
mbuf);
|
|
|
|
(*ifp->if_input)(ifp, mbuf);
|
|
|
|
}
|
|
|
|
|
|
|
|
counter_u64_add(rx_ring->rx_stats.cnt, 1);
|
|
|
|
} while (--budget);
|
|
|
|
|
|
|
|
rx_ring->next_to_clean = next_to_clean;
|
|
|
|
|
|
|
|
refill_required = ena_com_sq_empty_space(io_sq);
|
|
|
|
refill_threshold = rx_ring->ring_size / ENA_RX_REFILL_THRESH_DEVIDER;
|
|
|
|
|
|
|
|
if (refill_required > refill_threshold) {
|
|
|
|
ena_com_update_dev_comp_head(rx_ring->ena_com_io_cq);
|
|
|
|
ena_refill_rx_bufs(rx_ring, refill_required);
|
|
|
|
}
|
|
|
|
|
|
|
|
tcp_lro_flush_all(&rx_ring->lro);
|
|
|
|
|
|
|
|
return (RX_BUDGET - budget);
|
|
|
|
|
|
|
|
error:
|
|
|
|
counter_u64_add(rx_ring->rx_stats.bad_desc_num, 1);
|
|
|
|
return (RX_BUDGET - budget);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*********************************************************************
|
|
|
|
*
|
|
|
|
* MSIX & Interrupt Service routine
|
|
|
|
*
|
|
|
|
**********************************************************************/
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_handle_msix - MSIX Interrupt Handler for admin/async queue
|
|
|
|
* @arg: interrupt number
|
|
|
|
**/
|
|
|
|
static void
|
|
|
|
ena_intr_msix_mgmnt(void *arg)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = (struct ena_adapter *)arg;
|
|
|
|
|
|
|
|
ena_com_admin_q_comp_intr_handler(adapter->ena_dev);
|
|
|
|
if (likely(adapter->running))
|
|
|
|
ena_com_aenq_intr_handler(adapter->ena_dev, arg);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_handle_msix - MSIX Interrupt Handler for Tx/Rx
|
|
|
|
* @arg: interrupt number
|
|
|
|
**/
|
|
|
|
static void
|
|
|
|
ena_handle_msix(void *arg)
|
|
|
|
{
|
|
|
|
struct ena_que *que = arg;
|
|
|
|
struct ena_adapter *adapter = que->adapter;
|
|
|
|
if_t ifp = adapter->ifp;
|
|
|
|
struct ena_ring *tx_ring;
|
|
|
|
struct ena_ring *rx_ring;
|
|
|
|
struct ena_com_io_cq* io_cq;
|
|
|
|
struct ena_eth_io_intr_reg intr_reg;
|
|
|
|
int qid, ena_qid;
|
|
|
|
int txc, rxc, i;
|
|
|
|
|
|
|
|
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
ena_trace(ENA_DBG, "MSI-X TX/RX routine");
|
|
|
|
|
|
|
|
tx_ring = que->tx_ring;
|
|
|
|
rx_ring = que->rx_ring;
|
|
|
|
qid = que->id;
|
|
|
|
ena_qid = ENA_IO_TXQ_IDX(qid);
|
|
|
|
io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
|
|
|
|
|
|
|
|
for (i = 0; i < CLEAN_BUDGET; ++i) {
|
|
|
|
rxc = ena_rx_cleanup(rx_ring);
|
|
|
|
|
|
|
|
/* Protection from calling ena_tx_cleanup from ena_start_xmit */
|
|
|
|
ENA_RING_MTX_LOCK(tx_ring);
|
|
|
|
txc = ena_tx_cleanup(tx_ring);
|
|
|
|
ENA_RING_MTX_UNLOCK(tx_ring);
|
|
|
|
|
|
|
|
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (txc != TX_BUDGET && rxc != RX_BUDGET)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Signal that work is done and unmask interrupt */
|
|
|
|
ena_com_update_intr_reg(&intr_reg,
|
|
|
|
RX_IRQ_INTERVAL,
|
|
|
|
TX_IRQ_INTERVAL,
|
|
|
|
true);
|
|
|
|
ena_com_unmask_intr(io_cq, &intr_reg);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_enable_msix(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
device_t dev = adapter->pdev;
|
|
|
|
int i, msix_vecs, rc = 0;
|
|
|
|
|
|
|
|
/* Reserved the max msix vectors we might need */
|
|
|
|
msix_vecs = ENA_MAX_MSIX_VEC(adapter->num_queues);
|
|
|
|
|
|
|
|
adapter->msix_entries = ENA_MEM_ALLOC(adapter->ena_dev->dmadev,
|
|
|
|
msix_vecs * sizeof(struct msix_entry));
|
|
|
|
if (!adapter->msix_entries) {
|
|
|
|
device_printf(dev,
|
|
|
|
"Failed to allocate msix_entries, vectors %d\n", msix_vecs);
|
|
|
|
rc = ENOMEM;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
device_printf(dev, "Allocated msix_entries, vectors (cnt: %d)\n",
|
|
|
|
msix_vecs);
|
|
|
|
|
|
|
|
for (i = 0; i < msix_vecs; i++) {
|
|
|
|
adapter->msix_entries[i].entry = i;
|
|
|
|
/* Vectors must start from 1 */
|
|
|
|
adapter->msix_entries[i].vector = i + 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = pci_alloc_msix(dev, &msix_vecs);
|
|
|
|
if (rc != 0) {
|
|
|
|
device_printf(dev,
|
|
|
|
"Failed to enable MSIX, vectors %d rc %d\n", msix_vecs, rc);
|
|
|
|
ENA_MEM_FREE(adapter->ena_dev->dmadev, adapter->msix_entries);
|
|
|
|
adapter->msix_entries = NULL;
|
|
|
|
rc = ENOSPC;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
adapter->msix_vecs = msix_vecs;
|
|
|
|
adapter->msix_enabled = true;
|
|
|
|
|
|
|
|
error:
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_setup_mgmnt_intr(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
|
|
|
|
snprintf(adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].name,
|
|
|
|
ENA_IRQNAME_SIZE, "ena-mgmnt@pci:%s",
|
|
|
|
device_get_nameunit(adapter->pdev));
|
|
|
|
/*
|
|
|
|
* Handler is NULL on purpose, it will be set
|
|
|
|
* when mgmnt interrupt is acquired
|
|
|
|
*/
|
|
|
|
adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].handler = NULL;
|
|
|
|
adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].data = adapter;
|
|
|
|
adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].vector =
|
|
|
|
adapter->msix_entries[ENA_MGMNT_IRQ_IDX].vector;
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_setup_io_intr(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
static int last_bind_cpu = -1;
|
|
|
|
int irq_idx;
|
|
|
|
ena_trace(ENA_DBG, "enter");
|
|
|
|
|
|
|
|
for (int i = 0; i < adapter->num_queues; i++) {
|
|
|
|
irq_idx = ENA_IO_IRQ_IDX(i);
|
|
|
|
|
|
|
|
snprintf(adapter->irq_tbl[irq_idx].name, ENA_IRQNAME_SIZE,
|
|
|
|
"%s-TxRx-%d", device_get_nameunit(adapter->pdev), i);
|
|
|
|
adapter->irq_tbl[irq_idx].handler = ena_handle_msix;
|
|
|
|
adapter->irq_tbl[irq_idx].data = &adapter->que[i];
|
|
|
|
adapter->irq_tbl[irq_idx].vector =
|
|
|
|
adapter->msix_entries[irq_idx].vector;
|
|
|
|
ena_trace(ENA_INFO | ENA_IOQ, "ena_setup_io_intr vector: %d\n",
|
|
|
|
adapter->msix_entries[irq_idx].vector);
|
|
|
|
#ifdef RSS
|
|
|
|
adapter->que[i].cpu = adapter->irq_tbl[irq_idx].cpu =
|
|
|
|
rss_getcpu(i % rss_getnumbuckets());
|
|
|
|
#else
|
|
|
|
/*
|
|
|
|
* We still want to bind rings to the corresponding cpu
|
|
|
|
* using something similar to the RSS round-robin technique.
|
|
|
|
*/
|
|
|
|
if (last_bind_cpu < 0)
|
|
|
|
last_bind_cpu = CPU_FIRST();
|
|
|
|
adapter->que[i].cpu = adapter->irq_tbl[irq_idx].cpu =
|
|
|
|
last_bind_cpu;
|
|
|
|
last_bind_cpu = CPU_NEXT(last_bind_cpu);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_request_mgmnt_irq(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_irq *irq;
|
|
|
|
unsigned long flags;
|
|
|
|
int rc, rcc;
|
|
|
|
|
|
|
|
flags = RF_ACTIVE | RF_SHAREABLE;
|
|
|
|
|
|
|
|
irq = &adapter->irq_tbl[ENA_MGMNT_IRQ_IDX];
|
|
|
|
irq->res = bus_alloc_resource_any(adapter->pdev, SYS_RES_IRQ,
|
|
|
|
&irq->vector, flags);
|
|
|
|
|
|
|
|
if (irq->res == NULL) {
|
|
|
|
device_printf(adapter->pdev, "could not allocate "
|
|
|
|
"irq vector: %d\n", irq->vector);
|
|
|
|
rc = ENXIO;
|
|
|
|
goto exit_res;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((rc = bus_activate_resource(adapter->pdev, SYS_RES_IRQ, irq->vector,
|
|
|
|
irq->res)) != 0) {
|
|
|
|
device_printf(adapter->pdev, "could not activate "
|
|
|
|
"irq vector: %d\n", irq->vector);
|
|
|
|
goto exit_intr;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((rc = bus_setup_intr(adapter->pdev, irq->res,
|
|
|
|
INTR_TYPE_NET | INTR_MPSAFE, NULL,
|
|
|
|
ena_intr_msix_mgmnt, irq->data, &irq->cookie)) != 0) {
|
|
|
|
device_printf(adapter->pdev, "failed to register "
|
|
|
|
"interrupt handler for irq %ju: %d\n",
|
|
|
|
rman_get_start(irq->res), rc);
|
|
|
|
goto exit_intr;
|
|
|
|
}
|
|
|
|
irq->requested = true;
|
|
|
|
|
|
|
|
return (rc);
|
|
|
|
|
|
|
|
exit_intr:
|
|
|
|
device_printf(adapter->pdev, "exit_intr: releasing resource"
|
|
|
|
" for irq %d\n", irq->vector);
|
|
|
|
rcc = bus_release_resource(adapter->pdev, SYS_RES_IRQ,
|
|
|
|
irq->vector, irq->res);
|
|
|
|
if (rcc)
|
|
|
|
device_printf(adapter->pdev, "dev has no parent while "
|
|
|
|
"releasing res for irq: %d\n", irq->vector);
|
|
|
|
irq->res = NULL;
|
|
|
|
|
|
|
|
exit_res:
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_request_io_irq(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_irq *irq;
|
|
|
|
unsigned long flags = 0;
|
|
|
|
int rc = 0, i, rcc;
|
|
|
|
|
|
|
|
if (!adapter->msix_enabled) {
|
|
|
|
device_printf(adapter->pdev, "failed to request irq\n");
|
|
|
|
return (EINVAL);
|
|
|
|
} else {
|
|
|
|
flags = RF_ACTIVE | RF_SHAREABLE;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) {
|
|
|
|
irq = &adapter->irq_tbl[i];
|
|
|
|
|
|
|
|
if (irq->requested)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
irq->res = bus_alloc_resource_any(adapter->pdev, SYS_RES_IRQ,
|
|
|
|
&irq->vector, flags);
|
|
|
|
if (irq->res == NULL) {
|
|
|
|
device_printf(adapter->pdev, "could not allocate "
|
|
|
|
"irq vector: %d\n", irq->vector);
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((rc = bus_setup_intr(adapter->pdev, irq->res,
|
|
|
|
INTR_TYPE_NET | INTR_MPSAFE, NULL, irq->handler,
|
|
|
|
irq->data, &irq->cookie)) != 0) {
|
|
|
|
device_printf(adapter->pdev, "failed to register "
|
|
|
|
"interrupt handler for irq %ju: %d\n",
|
|
|
|
rman_get_start(irq->res), rc);
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
irq->requested = true;
|
|
|
|
|
|
|
|
#ifdef RSS
|
|
|
|
device_printf(adapter->pdev, "queue %d - RSS bucket %d\n",
|
|
|
|
i - ENA_IO_IRQ_FIRST_IDX, irq->cpu);
|
|
|
|
#else
|
|
|
|
device_printf(adapter->pdev, "queue %d - cpu %d\n",
|
|
|
|
i - ENA_IO_IRQ_FIRST_IDX, irq->cpu);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
return (rc);
|
|
|
|
|
|
|
|
err:
|
|
|
|
|
|
|
|
for (; i >= ENA_IO_IRQ_FIRST_IDX; i--) {
|
|
|
|
irq = &adapter->irq_tbl[i];
|
|
|
|
rcc = 0;
|
|
|
|
|
|
|
|
/* Once we entered err: section and irq->requested is true we
|
|
|
|
free both intr and resources */
|
|
|
|
if (irq->requested == true)
|
|
|
|
rcc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie);
|
|
|
|
if (rcc)
|
|
|
|
device_printf(adapter->pdev, "could not release"
|
|
|
|
" irq: %d, error: %d\n", irq->vector, rcc);
|
|
|
|
|
|
|
|
/* If we entred err: section without irq->requested set we know
|
|
|
|
it was bus_alloc_resource_any() that needs cleanup, provided
|
|
|
|
res is not NULL. In case res is NULL no work in needed in
|
|
|
|
this iteration */
|
|
|
|
rcc = 0;
|
|
|
|
if (irq->res != NULL) {
|
|
|
|
rcc = bus_release_resource(adapter->pdev, SYS_RES_IRQ,
|
|
|
|
irq->vector, irq->res);
|
|
|
|
}
|
|
|
|
if (rcc)
|
|
|
|
device_printf(adapter->pdev, "dev has no parent while "
|
|
|
|
"releasing res for irq: %d\n", irq->vector);
|
|
|
|
irq->requested = false;
|
|
|
|
irq->res = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_free_mgmnt_irq(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_irq *irq;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
irq = &adapter->irq_tbl[ENA_MGMNT_IRQ_IDX];
|
|
|
|
if (irq->requested) {
|
|
|
|
ena_trace(ENA_INFO | ENA_ADMQ, "tear down irq: %d\n",
|
|
|
|
irq->vector);
|
|
|
|
rc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie);
|
|
|
|
if (rc)
|
|
|
|
device_printf(adapter->pdev, "failed to tear "
|
|
|
|
"down irq: %d\n", irq->vector);
|
|
|
|
irq->requested = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (irq->res != NULL) {
|
|
|
|
ena_trace(ENA_INFO | ENA_ADMQ, "release resource irq: %d\n",
|
|
|
|
irq->vector);
|
|
|
|
rc = bus_release_resource(adapter->pdev, SYS_RES_IRQ,
|
|
|
|
irq->vector, irq->res);
|
|
|
|
irq->res = NULL;
|
|
|
|
if (rc)
|
|
|
|
device_printf(adapter->pdev, "dev has no parent while "
|
|
|
|
"releasing res for irq: %d\n", irq->vector);
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_free_io_irq(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_irq *irq;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
for (int i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) {
|
|
|
|
irq = &adapter->irq_tbl[i];
|
|
|
|
if (irq->requested) {
|
|
|
|
ena_trace(ENA_INFO | ENA_IOQ, "tear down irq: %d\n",
|
|
|
|
irq->vector);
|
|
|
|
rc = bus_teardown_intr(adapter->pdev, irq->res,
|
|
|
|
irq->cookie);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev, "failed to tear "
|
|
|
|
"down irq: %d\n", irq->vector);
|
|
|
|
}
|
|
|
|
irq->requested = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (irq->res != NULL) {
|
|
|
|
ena_trace(ENA_INFO | ENA_IOQ, "release resource irq: %d\n",
|
|
|
|
irq->vector);
|
|
|
|
rc = bus_release_resource(adapter->pdev, SYS_RES_IRQ,
|
|
|
|
irq->vector, irq->res);
|
|
|
|
irq->res = NULL;
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev, "dev has no parent"
|
|
|
|
" while releasing res for irq: %d\n",
|
|
|
|
irq->vector);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_free_irqs(struct ena_adapter* adapter)
|
|
|
|
{
|
|
|
|
|
|
|
|
ena_free_io_irq(adapter);
|
|
|
|
ena_free_mgmnt_irq(adapter);
|
|
|
|
ena_disable_msix(adapter);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_disable_msix(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
|
|
|
|
pci_release_msi(adapter->pdev);
|
|
|
|
|
|
|
|
adapter->msix_vecs = 0;
|
|
|
|
ENA_MEM_FREE(adapter->ena_dev->dmadev, adapter->msix_entries);
|
|
|
|
adapter->msix_entries = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_unmask_all_io_irqs(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_com_io_cq* io_cq;
|
|
|
|
struct ena_eth_io_intr_reg intr_reg;
|
|
|
|
uint16_t ena_qid;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/* Unmask interrupts for all queues */
|
|
|
|
for (i = 0; i < adapter->num_queues; i++) {
|
|
|
|
ena_qid = ENA_IO_TXQ_IDX(i);
|
|
|
|
io_cq = &adapter->ena_dev->io_cq_queues[ena_qid];
|
|
|
|
ena_com_update_intr_reg(&intr_reg, 0, 0, true);
|
|
|
|
ena_com_unmask_intr(io_cq, &intr_reg);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Configure the Rx forwarding */
|
|
|
|
static int ena_rss_configure(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_com_dev *ena_dev = adapter->ena_dev;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
/* Set indirect table */
|
|
|
|
rc = ena_com_indirect_table_set(ena_dev);
|
|
|
|
if (unlikely(rc && rc != EPERM))
|
|
|
|
return rc;
|
|
|
|
|
|
|
|
/* Configure hash function (if supported) */
|
|
|
|
rc = ena_com_set_hash_function(ena_dev);
|
|
|
|
if (unlikely(rc && (rc != EPERM)))
|
|
|
|
return rc;
|
|
|
|
|
|
|
|
/* Configure hash inputs (if supported) */
|
|
|
|
rc = ena_com_set_hash_ctrl(ena_dev);
|
|
|
|
if (unlikely(rc && (rc != EPERM)))
|
|
|
|
return rc;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2017-05-30 11:58:51 +00:00
|
|
|
static void
|
|
|
|
ena_update_hw_stats(void *arg, int pending)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = arg;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
if (!adapter->up)
|
|
|
|
return;
|
|
|
|
|
|
|
|
rc = ena_update_stats_counters(adapter);
|
|
|
|
if (rc)
|
|
|
|
ena_trace(ENA_WARNING,
|
|
|
|
"Error updating stats counters, rc = %d", rc);
|
|
|
|
|
|
|
|
pause("ena update hw stats", hz);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
static int
|
|
|
|
ena_up_complete(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
if (adapter->rss_support) {
|
|
|
|
rc = ena_rss_configure(adapter);
|
|
|
|
if (rc)
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
ena_change_mtu(adapter->ifp, adapter->ifp->if_mtu);
|
|
|
|
ena_refill_all_rx_bufs(adapter);
|
|
|
|
ena_unmask_all_io_irqs(adapter);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_up(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
int rc = 0;
|
|
|
|
|
|
|
|
if (!device_is_attached(adapter->pdev)) {
|
|
|
|
device_printf(adapter->pdev, "device is not attached!\n");
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!adapter->running) {
|
|
|
|
device_printf(adapter->pdev, "device is not running!\n");
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!adapter->up) {
|
|
|
|
device_printf(adapter->pdev, "device is going UP\n");
|
|
|
|
|
|
|
|
/* setup interrupts for IO queues */
|
|
|
|
ena_setup_io_intr(adapter);
|
|
|
|
rc = ena_request_io_irq(adapter);
|
|
|
|
if (rc) {
|
|
|
|
ena_trace(ENA_ALERT, "err_req_irq");
|
|
|
|
goto err_req_irq;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* allocate transmit descriptors */
|
|
|
|
rc = ena_setup_all_tx_resources(adapter);
|
|
|
|
if (rc) {
|
|
|
|
ena_trace(ENA_ALERT, "err_setup_tx");
|
|
|
|
goto err_setup_tx;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* allocate receive descriptors */
|
|
|
|
rc = ena_setup_all_rx_resources(adapter);
|
|
|
|
if (rc) {
|
|
|
|
ena_trace(ENA_ALERT, "err_setup_rx");
|
|
|
|
goto err_setup_rx;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* create IO queues for Rx & Tx */
|
|
|
|
rc = ena_create_io_queues(adapter);
|
|
|
|
if (rc) {
|
|
|
|
ena_trace(ENA_ALERT,
|
|
|
|
"create IO queues failed");
|
|
|
|
goto err_io_que;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (adapter->link_status)
|
|
|
|
if_link_state_change(adapter->ifp, LINK_STATE_UP);
|
|
|
|
|
|
|
|
rc = ena_up_complete(adapter);
|
|
|
|
if (rc)
|
|
|
|
goto err_up_complete;
|
|
|
|
|
|
|
|
counter_u64_add(adapter->dev_stats.interface_up, 1);
|
|
|
|
|
|
|
|
ena_update_hwassist(adapter);
|
|
|
|
|
|
|
|
if_setdrvflagbits(adapter->ifp, IFF_DRV_RUNNING,
|
|
|
|
IFF_DRV_OACTIVE);
|
|
|
|
|
|
|
|
callout_reset_sbt(&adapter->timer_service, SBT_1S, SBT_1S,
|
|
|
|
ena_timer_service, (void *)adapter, 0);
|
|
|
|
|
2017-05-30 11:58:51 +00:00
|
|
|
taskqueue_enqueue(adapter->stats_tq, &adapter->stats_task);
|
|
|
|
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
adapter->up = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
err_up_complete:
|
|
|
|
ena_destroy_all_io_queues(adapter);
|
|
|
|
err_io_que:
|
|
|
|
ena_free_all_rx_resources(adapter);
|
|
|
|
err_setup_rx:
|
|
|
|
ena_free_all_tx_resources(adapter);
|
|
|
|
err_setup_tx:
|
|
|
|
ena_free_io_irq(adapter);
|
|
|
|
err_req_irq:
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
ena_update_stats_counters(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_admin_basic_stats ena_stats;
|
|
|
|
struct ena_hw_stats *stats = &adapter->hw_stats;
|
|
|
|
int rc = 0;
|
|
|
|
|
|
|
|
if (!adapter->up)
|
|
|
|
return (rc);
|
|
|
|
|
|
|
|
rc = ena_com_get_dev_basic_stats(adapter->ena_dev, &ena_stats);
|
|
|
|
if (rc)
|
|
|
|
return (rc);
|
|
|
|
|
|
|
|
stats->tx_bytes = ((uint64_t)ena_stats.tx_bytes_high << 32) |
|
|
|
|
ena_stats.tx_bytes_low;
|
|
|
|
stats->rx_bytes = ((uint64_t)ena_stats.rx_bytes_high << 32) |
|
|
|
|
ena_stats.rx_bytes_low;
|
|
|
|
|
|
|
|
stats->rx_packets = ((uint64_t)ena_stats.rx_pkts_high << 32) |
|
|
|
|
ena_stats.rx_pkts_low;
|
|
|
|
stats->tx_packets = ((uint64_t)ena_stats.tx_pkts_high << 32) |
|
|
|
|
ena_stats.tx_pkts_low;
|
|
|
|
|
|
|
|
stats->rx_drops = ((uint64_t)ena_stats.rx_drops_high << 32) |
|
|
|
|
ena_stats.rx_drops_low;
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static uint64_t
|
|
|
|
ena_get_counter(if_t ifp, ift_counter cnt)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter;
|
|
|
|
struct ena_hw_stats *stats;
|
|
|
|
|
|
|
|
adapter = if_getsoftc(ifp);
|
|
|
|
stats = &adapter->hw_stats;
|
|
|
|
|
|
|
|
switch (cnt) {
|
|
|
|
case IFCOUNTER_IPACKETS:
|
|
|
|
return (stats->rx_packets);
|
|
|
|
case IFCOUNTER_OPACKETS:
|
|
|
|
return (stats->tx_packets);
|
|
|
|
case IFCOUNTER_IBYTES:
|
|
|
|
return (stats->rx_bytes);
|
|
|
|
case IFCOUNTER_OBYTES:
|
|
|
|
return (stats->tx_bytes);
|
|
|
|
case IFCOUNTER_IQDROPS:
|
|
|
|
return (stats->rx_drops);
|
|
|
|
default:
|
|
|
|
return (if_get_counter_default(ifp, cnt));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_media_change(if_t ifp)
|
|
|
|
{
|
|
|
|
/* Media Change is not supported by firmware */
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_media_status(if_t ifp, struct ifmediareq *ifmr)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = if_getsoftc(ifp);
|
|
|
|
ena_trace(ENA_DBG, "enter");
|
|
|
|
|
|
|
|
ENA_DEV_LOCK;
|
|
|
|
|
|
|
|
ifmr->ifm_status = IFM_AVALID;
|
|
|
|
ifmr->ifm_active = IFM_ETHER;
|
|
|
|
|
|
|
|
if (!adapter->link_status) {
|
|
|
|
ENA_DEV_UNLOCK;
|
|
|
|
ena_trace(ENA_WARNING, "link_status = false");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
ifmr->ifm_status |= IFM_ACTIVE;
|
|
|
|
ifmr->ifm_active |= IFM_10G_T | IFM_FDX;
|
|
|
|
|
|
|
|
ENA_DEV_UNLOCK;
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_init(void *arg)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = (struct ena_adapter *)arg;
|
|
|
|
|
2017-07-03 23:59:11 +00:00
|
|
|
if (adapter->up == false) {
|
|
|
|
sx_xlock(&adapter->ioctl_sx);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
ena_up(adapter);
|
2017-07-03 23:59:11 +00:00
|
|
|
sx_unlock(&adapter->ioctl_sx);
|
|
|
|
}
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_ioctl(if_t ifp, u_long command, caddr_t data)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter;
|
|
|
|
struct ifreq *ifr;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
adapter = ifp->if_softc;
|
|
|
|
ifr = (struct ifreq *)data;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Acquiring lock to prevent from running up and down routines parallel.
|
|
|
|
*/
|
|
|
|
rc = 0;
|
|
|
|
switch (command) {
|
|
|
|
case SIOCSIFMTU:
|
2017-05-30 11:55:02 +00:00
|
|
|
sx_xlock(&adapter->ioctl_sx);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
ena_down(adapter);
|
|
|
|
|
|
|
|
ena_change_mtu(ifp, ifr->ifr_mtu);
|
|
|
|
|
|
|
|
rc = ena_up(adapter);
|
2017-05-30 11:55:02 +00:00
|
|
|
sx_unlock(&adapter->ioctl_sx);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case SIOCSIFFLAGS:
|
|
|
|
if (ifp->if_flags & IFF_UP) {
|
|
|
|
if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
|
|
|
|
if (ifp->if_flags & (IFF_PROMISC |
|
|
|
|
IFF_ALLMULTI)) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"ioctl promisc/allmulti\n");
|
|
|
|
}
|
|
|
|
} else {
|
2017-05-30 11:55:02 +00:00
|
|
|
sx_xlock(&adapter->ioctl_sx);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
rc = ena_up(adapter);
|
2017-05-30 11:55:02 +00:00
|
|
|
sx_unlock(&adapter->ioctl_sx);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
}
|
|
|
|
} else {
|
2017-05-30 11:55:02 +00:00
|
|
|
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
|
|
|
|
sx_xlock(&adapter->ioctl_sx);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
ena_down(adapter);
|
2017-05-30 11:55:02 +00:00
|
|
|
sx_unlock(&adapter->ioctl_sx);
|
|
|
|
}
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SIOCADDMULTI:
|
|
|
|
case SIOCDELMULTI:
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SIOCSIFMEDIA:
|
|
|
|
case SIOCGIFMEDIA:
|
|
|
|
rc = ifmedia_ioctl(ifp, ifr, &adapter->media, command);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SIOCSIFCAP:
|
|
|
|
{
|
|
|
|
int reinit = 0;
|
|
|
|
|
|
|
|
if (ifr->ifr_reqcap != ifp->if_capenable) {
|
|
|
|
ifp->if_capenable = ifr->ifr_reqcap;
|
|
|
|
reinit = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (reinit && (ifp->if_drv_flags & IFF_DRV_RUNNING)) {
|
2017-05-30 11:55:02 +00:00
|
|
|
sx_xlock(&adapter->ioctl_sx);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
ena_down(adapter);
|
|
|
|
rc = ena_up(adapter);
|
2017-05-30 11:55:02 +00:00
|
|
|
sx_unlock(&adapter->ioctl_sx);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
rc = ether_ioctl(ifp, command, data);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_get_dev_offloads(struct ena_com_dev_get_features_ctx *feat)
|
|
|
|
{
|
|
|
|
int caps = 0;
|
|
|
|
|
|
|
|
if (feat->offload.tx &
|
|
|
|
(ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK |
|
|
|
|
ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK |
|
|
|
|
ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK))
|
|
|
|
caps |= IFCAP_TXCSUM;
|
|
|
|
|
|
|
|
if (feat->offload.tx &
|
|
|
|
(ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_MASK |
|
|
|
|
ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK))
|
|
|
|
caps |= IFCAP_TXCSUM_IPV6;
|
|
|
|
|
|
|
|
if (feat->offload.tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK)
|
|
|
|
caps |= IFCAP_TSO4;
|
|
|
|
|
|
|
|
if (feat->offload.tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_MASK)
|
|
|
|
caps |= IFCAP_TSO6;
|
|
|
|
|
|
|
|
if (feat->offload.rx_supported &
|
|
|
|
(ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK |
|
|
|
|
ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L3_CSUM_IPV4_MASK))
|
|
|
|
caps |= IFCAP_RXCSUM;
|
|
|
|
|
|
|
|
if (feat->offload.rx_supported &
|
|
|
|
ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK)
|
|
|
|
caps |= IFCAP_RXCSUM_IPV6;
|
|
|
|
|
|
|
|
caps |= IFCAP_LRO | IFCAP_JUMBO_MTU;
|
|
|
|
|
|
|
|
return (caps);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_update_host_info(struct ena_admin_host_info *host_info, if_t ifp)
|
|
|
|
{
|
|
|
|
|
|
|
|
host_info->supported_network_features[0] =
|
|
|
|
(uint32_t)if_getcapabilities(ifp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_update_hwassist(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
if_t ifp = adapter->ifp;
|
|
|
|
uint32_t feat = adapter->tx_offload_cap;
|
|
|
|
int cap = if_getcapenable(ifp);
|
|
|
|
int flags = 0;
|
|
|
|
|
|
|
|
if_clearhwassist(ifp);
|
|
|
|
|
|
|
|
if (cap & IFCAP_TXCSUM) {
|
|
|
|
if (feat & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK)
|
|
|
|
flags |= CSUM_IP;
|
|
|
|
if (feat &
|
|
|
|
(ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK |
|
|
|
|
ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK))
|
|
|
|
flags |= CSUM_IP_UDP | CSUM_IP_TCP;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (cap & IFCAP_TXCSUM_IPV6)
|
|
|
|
flags |= CSUM_IP6_UDP | CSUM_IP6_TCP;
|
|
|
|
|
|
|
|
if (cap & IFCAP_TSO4)
|
|
|
|
flags |= CSUM_IP_TSO;
|
|
|
|
|
|
|
|
if (cap & IFCAP_TSO6)
|
|
|
|
flags |= CSUM_IP6_TSO;
|
|
|
|
|
|
|
|
if_sethwassistbits(ifp, flags, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_setup_ifnet(device_t pdev, struct ena_adapter *adapter,
|
|
|
|
struct ena_com_dev_get_features_ctx *feat)
|
|
|
|
{
|
|
|
|
if_t ifp;
|
|
|
|
int caps = 0;
|
|
|
|
|
|
|
|
ena_trace(ENA_DBG, "enter");
|
|
|
|
|
|
|
|
ifp = adapter->ifp = if_gethandle(IFT_ETHER);
|
|
|
|
if (ifp == 0) {
|
|
|
|
device_printf(pdev, "can not allocate ifnet structure\n");
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
if_initname(ifp, device_get_name(pdev), device_get_unit(pdev));
|
|
|
|
if_setdev(ifp, pdev);
|
|
|
|
if_setsoftc(ifp, adapter);
|
|
|
|
|
|
|
|
if_setflags(ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
|
|
|
|
if_setinitfn(ifp, ena_init);
|
|
|
|
if_settransmitfn(ifp, ena_mq_start);
|
|
|
|
if_setqflushfn(ifp, ena_qflush);
|
|
|
|
if_setioctlfn(ifp, ena_ioctl);
|
|
|
|
if_setgetcounterfn(ifp, ena_get_counter);
|
|
|
|
|
|
|
|
if_setsendqlen(ifp, adapter->tx_ring_size);
|
|
|
|
if_setsendqready(ifp);
|
|
|
|
if_setmtu(ifp, ETHERMTU);
|
|
|
|
if_setbaudrate(ifp, 0);
|
|
|
|
/* Zeroize capabilities... */
|
|
|
|
if_setcapabilities(ifp, 0);
|
|
|
|
if_setcapenable(ifp, 0);
|
|
|
|
/* check hardware support */
|
|
|
|
caps = ena_get_dev_offloads(feat);
|
|
|
|
/* ... and set them */
|
|
|
|
if_setcapabilitiesbit(ifp, caps, 0);
|
|
|
|
|
|
|
|
/* TSO parameters */
|
|
|
|
ifp->if_hw_tsomax = ENA_TSO_MAXSIZE;
|
|
|
|
ifp->if_hw_tsomaxsegcount = ENA_TSO_NSEGS;
|
|
|
|
ifp->if_hw_tsomaxsegsize = MCLBYTES;
|
|
|
|
|
|
|
|
if_setifheaderlen(ifp, sizeof(struct ether_vlan_header));
|
|
|
|
if_setcapenable(ifp, if_getcapabilities(ifp));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Specify the media types supported by this adapter and register
|
|
|
|
* callbacks to update media and link information
|
|
|
|
*/
|
|
|
|
ifmedia_init(&adapter->media, IFM_IMASK,
|
|
|
|
ena_media_change, ena_media_status);
|
|
|
|
ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL);
|
|
|
|
ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO);
|
|
|
|
|
|
|
|
ether_ifattach(ifp, adapter->mac_addr);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_down(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
|
|
|
|
if (adapter->up) {
|
|
|
|
device_printf(adapter->pdev, "device is going DOWN\n");
|
|
|
|
|
|
|
|
callout_drain(&adapter->timer_service);
|
|
|
|
|
|
|
|
adapter->up = false;
|
|
|
|
if_setdrvflagbits(adapter->ifp, IFF_DRV_OACTIVE,
|
|
|
|
IFF_DRV_RUNNING);
|
|
|
|
|
2017-05-30 11:58:51 +00:00
|
|
|
/* Drain task responsible for updating hw stats */
|
|
|
|
while (taskqueue_cancel(adapter->stats_tq, &adapter->stats_task, NULL))
|
|
|
|
taskqueue_drain(adapter->stats_tq, &adapter->stats_task);
|
|
|
|
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
ena_free_io_irq(adapter);
|
|
|
|
|
|
|
|
ena_destroy_all_io_queues(adapter);
|
|
|
|
|
|
|
|
ena_free_all_tx_bufs(adapter);
|
|
|
|
ena_free_all_rx_bufs(adapter);
|
|
|
|
ena_free_all_tx_resources(adapter);
|
|
|
|
ena_free_all_rx_resources(adapter);
|
|
|
|
|
|
|
|
counter_u64_add(adapter->dev_stats.interface_down, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_tx_csum(struct ena_com_tx_ctx *ena_tx_ctx, struct mbuf *mbuf)
|
|
|
|
{
|
|
|
|
struct ena_com_tx_meta *ena_meta;
|
|
|
|
struct ether_vlan_header *eh;
|
|
|
|
u32 mss;
|
|
|
|
bool offload;
|
|
|
|
uint16_t etype;
|
|
|
|
int ehdrlen;
|
|
|
|
struct ip *ip;
|
|
|
|
int iphlen;
|
|
|
|
struct tcphdr *th;
|
|
|
|
|
|
|
|
offload = false;
|
|
|
|
ena_meta = &ena_tx_ctx->ena_meta;
|
|
|
|
mss = mbuf->m_pkthdr.tso_segsz;
|
|
|
|
|
|
|
|
if (mss != 0)
|
|
|
|
offload = true;
|
|
|
|
|
|
|
|
if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) != 0)
|
|
|
|
offload = true;
|
|
|
|
|
|
|
|
if ((mbuf->m_pkthdr.csum_flags & CSUM_OFFLOAD) != 0)
|
|
|
|
offload = true;
|
|
|
|
|
|
|
|
if (offload == false) {
|
|
|
|
ena_tx_ctx->meta_valid = 0;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Determine where frame payload starts. */
|
|
|
|
eh = mtod(mbuf, struct ether_vlan_header *);
|
|
|
|
if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) {
|
|
|
|
etype = ntohs(eh->evl_proto);
|
|
|
|
ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN;
|
|
|
|
} else {
|
|
|
|
etype = ntohs(eh->evl_encap_proto);
|
|
|
|
ehdrlen = ETHER_HDR_LEN;
|
|
|
|
}
|
|
|
|
|
|
|
|
ip = (struct ip *)(mbuf->m_data + ehdrlen);
|
|
|
|
iphlen = ip->ip_hl << 2;
|
|
|
|
th = (struct tcphdr *)((caddr_t)ip + iphlen);
|
|
|
|
|
|
|
|
if ((mbuf->m_pkthdr.csum_flags & CSUM_IP) != 0) {
|
|
|
|
ena_tx_ctx->l3_csum_enable = 1;
|
|
|
|
}
|
|
|
|
if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
|
|
|
|
ena_tx_ctx->tso_enable = 1;
|
|
|
|
ena_meta->l4_hdr_len = (th->th_off);
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (etype) {
|
|
|
|
case ETHERTYPE_IP:
|
|
|
|
ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV4;
|
|
|
|
if (ip->ip_off == 0)
|
|
|
|
ena_tx_ctx->df = 1;
|
|
|
|
break;
|
|
|
|
case ETHERTYPE_IPV6:
|
|
|
|
ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV6;
|
|
|
|
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ip->ip_p == IPPROTO_TCP) {
|
|
|
|
ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_TCP;
|
|
|
|
if (mbuf->m_pkthdr.csum_flags & (CSUM_IP_TCP | CSUM_IP6_TCP))
|
|
|
|
ena_tx_ctx->l4_csum_enable = 1;
|
|
|
|
else
|
|
|
|
ena_tx_ctx->l4_csum_enable = 0;
|
|
|
|
} else if (ip->ip_p == IPPROTO_UDP) {
|
|
|
|
ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UDP;
|
|
|
|
if (mbuf->m_pkthdr.csum_flags & (CSUM_IP_UDP | CSUM_IP6_UDP))
|
|
|
|
ena_tx_ctx->l4_csum_enable = 1;
|
|
|
|
else
|
|
|
|
ena_tx_ctx->l4_csum_enable = 0;
|
|
|
|
} else {
|
|
|
|
ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UNKNOWN;
|
|
|
|
ena_tx_ctx->l4_csum_enable = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
ena_meta->mss = mss;
|
|
|
|
ena_meta->l3_hdr_len = iphlen;
|
|
|
|
ena_meta->l3_hdr_offset = ehdrlen;
|
|
|
|
ena_tx_ctx->meta_valid = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2017-05-30 11:53:18 +00:00
|
|
|
ena_check_and_defragment_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter;
|
|
|
|
struct mbuf *defrag_mbuf;
|
|
|
|
int num_frags;
|
|
|
|
|
|
|
|
adapter = tx_ring->adapter;
|
|
|
|
num_frags = ena_mbuf_count(*mbuf);
|
|
|
|
|
|
|
|
/* One segment must be reserved for configuration descriptor. */
|
|
|
|
if (num_frags < adapter->max_tx_sgl_size)
|
|
|
|
return (0);
|
|
|
|
counter_u64_add(tx_ring->tx_stats.defragment, 1);
|
|
|
|
|
|
|
|
defrag_mbuf = m_defrag(*mbuf, M_NOWAIT);
|
|
|
|
if (defrag_mbuf == NULL) {
|
|
|
|
counter_u64_add(tx_ring->tx_stats.defragment_err, 1);
|
|
|
|
return (ENOMEM);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If mbuf was defragmented succesfully, original mbuf is released. */
|
|
|
|
*mbuf = defrag_mbuf;
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_xmit_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf)
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
{
|
|
|
|
struct ena_adapter *adapter;
|
|
|
|
struct ena_tx_buffer *tx_info;
|
|
|
|
struct ena_com_tx_ctx ena_tx_ctx;
|
|
|
|
struct ena_com_dev *ena_dev;
|
|
|
|
struct ena_com_buf *ena_buf;
|
|
|
|
struct ena_com_io_sq* io_sq;
|
|
|
|
bus_dma_segment_t segs[ENA_BUS_DMA_SEGS];
|
|
|
|
void *push_hdr;
|
|
|
|
uint16_t next_to_use;
|
|
|
|
uint16_t req_id;
|
|
|
|
uint16_t push_len;
|
|
|
|
uint16_t ena_qid;
|
|
|
|
uint32_t len, nsegs, header_len;
|
|
|
|
int i, rc;
|
2017-05-30 11:53:18 +00:00
|
|
|
int nb_hw_desc;
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
|
|
|
|
ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id);
|
|
|
|
adapter = tx_ring->que->adapter;
|
|
|
|
ena_dev = adapter->ena_dev;
|
|
|
|
io_sq = &adapter->ena_dev->io_sq_queues[ena_qid];
|
|
|
|
|
2017-05-30 11:53:18 +00:00
|
|
|
ENA_ASSERT(*mbuf, "mbuf is NULL\n");
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
|
2017-05-30 11:53:18 +00:00
|
|
|
rc = ena_check_and_defragment_mbuf(tx_ring, mbuf);
|
|
|
|
if (rc) {
|
|
|
|
ena_trace(ENA_WARNING,
|
|
|
|
"Failed to defragment mbuf! err: %d", rc);
|
|
|
|
return (rc);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
next_to_use = tx_ring->next_to_use;
|
|
|
|
req_id = tx_ring->free_tx_ids[next_to_use];
|
|
|
|
tx_info = &tx_ring->tx_buffer_info[req_id];
|
|
|
|
|
2017-05-30 11:53:18 +00:00
|
|
|
tx_info->mbuf = *mbuf;
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
tx_info->num_of_bufs = 0;
|
|
|
|
|
|
|
|
ena_buf = tx_info->bufs;
|
2017-05-30 11:53:18 +00:00
|
|
|
len = (*mbuf)->m_len;
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
|
2017-05-30 11:53:18 +00:00
|
|
|
ena_trace(ENA_DBG | ENA_TXPTH, "Tx: %d bytes", (*mbuf)->m_pkthdr.len);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
|
|
|
|
push_len = 0;
|
|
|
|
header_len = min_t(uint32_t, len, tx_ring->tx_max_header_size);
|
|
|
|
push_hdr = NULL;
|
|
|
|
|
|
|
|
rc = bus_dmamap_load_mbuf_sg(adapter->tx_buf_tag, tx_info->map,
|
2017-05-30 11:53:18 +00:00
|
|
|
*mbuf, segs, &nsegs, BUS_DMA_NOWAIT);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
|
|
|
|
if (rc || (nsegs == 0)) {
|
|
|
|
ena_trace(ENA_WARNING,
|
|
|
|
"dmamap load failed! err: %d nsegs: %d", rc, nsegs);
|
|
|
|
counter_u64_add(tx_ring->tx_stats.dma_mapping_err, 1);
|
|
|
|
tx_info->mbuf = NULL;
|
|
|
|
if (rc == ENOMEM)
|
|
|
|
return (ENA_COM_NO_MEM);
|
|
|
|
else
|
|
|
|
return (ENA_COM_INVAL);
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < nsegs; i++) {
|
|
|
|
ena_buf->len = segs[i].ds_len;
|
|
|
|
ena_buf->paddr = segs[i].ds_addr;
|
|
|
|
ena_buf++;
|
|
|
|
}
|
|
|
|
tx_info->num_of_bufs = nsegs;
|
|
|
|
|
|
|
|
memset(&ena_tx_ctx, 0x0, sizeof(struct ena_com_tx_ctx));
|
|
|
|
ena_tx_ctx.ena_bufs = tx_info->bufs;
|
|
|
|
ena_tx_ctx.push_header = push_hdr;
|
|
|
|
ena_tx_ctx.num_bufs = tx_info->num_of_bufs;
|
|
|
|
ena_tx_ctx.req_id = req_id;
|
|
|
|
ena_tx_ctx.header_len = header_len;
|
|
|
|
|
|
|
|
/* Set flags and meta data */
|
2017-05-30 11:53:18 +00:00
|
|
|
ena_tx_csum(&ena_tx_ctx, *mbuf);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
/* Prepare the packet's descriptors and send them to device */
|
|
|
|
rc = ena_com_prepare_tx(io_sq, &ena_tx_ctx, &nb_hw_desc);
|
|
|
|
if (rc != 0) {
|
|
|
|
ena_trace(ENA_WARNING, "failed to prepare tx bufs\n");
|
|
|
|
counter_enter();
|
|
|
|
counter_u64_add_protected(tx_ring->tx_stats.queue_stop, 1);
|
|
|
|
counter_u64_add_protected(tx_ring->tx_stats.prepare_ctx_err, 1);
|
|
|
|
counter_exit();
|
|
|
|
goto dma_error;
|
|
|
|
}
|
|
|
|
|
|
|
|
counter_enter();
|
|
|
|
counter_u64_add_protected(tx_ring->tx_stats.cnt, 1);
|
2017-05-30 11:53:18 +00:00
|
|
|
counter_u64_add_protected(tx_ring->tx_stats.bytes, (*mbuf)->m_pkthdr.len);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
counter_exit();
|
|
|
|
|
|
|
|
tx_info->tx_descs = nb_hw_desc;
|
|
|
|
getbinuptime(&tx_info->timestamp);
|
|
|
|
tx_info->print_once = true;
|
|
|
|
|
|
|
|
tx_ring->next_to_use = ENA_TX_RING_IDX_NEXT(next_to_use,
|
|
|
|
tx_ring->ring_size);
|
|
|
|
|
|
|
|
bus_dmamap_sync(adapter->tx_buf_tag, tx_info->map, BUS_DMASYNC_PREWRITE);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
dma_error:
|
|
|
|
tx_info->mbuf = NULL;
|
|
|
|
bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map);
|
|
|
|
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_start_xmit(struct ena_ring *tx_ring)
|
|
|
|
{
|
|
|
|
struct mbuf *mbuf;
|
|
|
|
struct ena_adapter *adapter = tx_ring->adapter;
|
|
|
|
struct ena_com_io_sq* io_sq;
|
|
|
|
int ena_qid;
|
|
|
|
int acum_pkts = 0;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
if ((adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (!adapter->link_status)
|
|
|
|
return;
|
|
|
|
|
|
|
|
ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id);
|
|
|
|
io_sq = &adapter->ena_dev->io_sq_queues[ena_qid];
|
|
|
|
|
|
|
|
while ((mbuf = drbr_peek(adapter->ifp, tx_ring->br)) != NULL) {
|
|
|
|
ena_trace(ENA_DBG | ENA_TXPTH, "\ndequeued mbuf %p with flags %#x and"
|
|
|
|
" header csum flags %#jx",
|
|
|
|
mbuf, mbuf->m_flags, mbuf->m_pkthdr.csum_flags);
|
|
|
|
|
|
|
|
if (ena_com_sq_empty_space(io_sq) < ENA_TX_CLEANUP_TRESHOLD)
|
|
|
|
ena_tx_cleanup(tx_ring);
|
|
|
|
|
2017-05-30 11:53:18 +00:00
|
|
|
if ((ret = ena_xmit_mbuf(tx_ring, &mbuf)) != 0) {
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
if (ret == ENA_COM_NO_MEM) {
|
|
|
|
drbr_putback(adapter->ifp, tx_ring->br, mbuf);
|
|
|
|
} else if (ret == ENA_COM_NO_SPACE) {
|
|
|
|
drbr_putback(adapter->ifp, tx_ring->br, mbuf);
|
|
|
|
} else {
|
|
|
|
m_freem(mbuf);
|
|
|
|
drbr_advance(adapter->ifp, tx_ring->br);
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
drbr_advance(adapter->ifp, tx_ring->br);
|
|
|
|
acum_pkts++;
|
|
|
|
|
|
|
|
BPF_MTAP(adapter->ifp, mbuf);
|
|
|
|
|
|
|
|
if (acum_pkts == DB_THRESHOLD) {
|
|
|
|
acum_pkts = 0;
|
|
|
|
wmb();
|
|
|
|
/* Trigger the dma engine */
|
|
|
|
ena_com_write_sq_doorbell(io_sq);
|
|
|
|
counter_u64_add(tx_ring->tx_stats.doorbells, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
if (acum_pkts) {
|
|
|
|
wmb();
|
|
|
|
/* Trigger the dma engine */
|
|
|
|
ena_com_write_sq_doorbell(io_sq);
|
|
|
|
counter_u64_add(tx_ring->tx_stats.doorbells, 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ena_com_sq_empty_space(io_sq) < ENA_TX_CLEANUP_TRESHOLD)
|
|
|
|
ena_tx_cleanup(tx_ring);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_deferred_mq_start(void *arg, int pending)
|
|
|
|
{
|
|
|
|
struct ena_ring *tx_ring = (struct ena_ring *)arg;
|
|
|
|
struct ifnet *ifp = tx_ring->adapter->ifp;
|
|
|
|
|
|
|
|
while (drbr_empty(ifp, tx_ring->br) == FALSE &&
|
|
|
|
(ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
|
|
|
|
ENA_RING_MTX_LOCK(tx_ring);
|
|
|
|
ena_start_xmit(tx_ring);
|
|
|
|
ENA_RING_MTX_UNLOCK(tx_ring);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_mq_start(if_t ifp, struct mbuf *m)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = ifp->if_softc;
|
|
|
|
struct ena_ring *tx_ring;
|
|
|
|
int ret, is_drbr_empty;
|
|
|
|
uint32_t i;
|
|
|
|
|
|
|
|
if ((adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
|
|
|
return (ENODEV);
|
|
|
|
|
|
|
|
/* Which queue to use */
|
|
|
|
/*
|
|
|
|
* If everything is setup correctly, it should be the
|
|
|
|
* same bucket that the current CPU we're on is.
|
|
|
|
* It should improve performance.
|
|
|
|
*/
|
|
|
|
if (M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) {
|
|
|
|
#ifdef RSS
|
|
|
|
if (rss_hash2bucket(m->m_pkthdr.flowid,
|
|
|
|
M_HASHTYPE_GET(m), &i) == 0) {
|
|
|
|
i = i % adapter->num_queues;
|
|
|
|
|
|
|
|
} else
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
i = m->m_pkthdr.flowid % adapter->num_queues;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
i = curcpu % adapter->num_queues;
|
|
|
|
}
|
|
|
|
tx_ring = &adapter->tx_ring[i];
|
|
|
|
|
|
|
|
/* Check if drbr is empty before putting packet */
|
|
|
|
is_drbr_empty = drbr_empty(ifp, tx_ring->br);
|
|
|
|
ret = drbr_enqueue(ifp, tx_ring->br, m);
|
|
|
|
if (ret) {
|
|
|
|
taskqueue_enqueue(tx_ring->enqueue_tq, &tx_ring->enqueue_task);
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (is_drbr_empty && ENA_RING_MTX_TRYLOCK(tx_ring)) {
|
|
|
|
ena_start_xmit(tx_ring);
|
|
|
|
ENA_RING_MTX_UNLOCK(tx_ring);
|
|
|
|
} else {
|
|
|
|
taskqueue_enqueue(tx_ring->enqueue_tq, &tx_ring->enqueue_task);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_qflush(if_t ifp)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = ifp->if_softc;
|
|
|
|
struct ena_ring *tx_ring = adapter->tx_ring;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for(i = 0; i < adapter->num_queues; ++i, ++tx_ring)
|
|
|
|
if (drbr_empty(ifp, tx_ring->br) == FALSE) {
|
|
|
|
ENA_RING_MTX_LOCK(tx_ring);
|
|
|
|
drbr_flush(ifp, tx_ring->br);
|
|
|
|
ENA_RING_MTX_UNLOCK(tx_ring);
|
|
|
|
}
|
|
|
|
|
|
|
|
if_qflush(ifp);
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ena_calc_io_queue_num(struct ena_adapter *adapter,
|
|
|
|
struct ena_com_dev_get_features_ctx *get_feat_ctx)
|
|
|
|
{
|
|
|
|
int io_sq_num, io_cq_num, io_queue_num;
|
|
|
|
|
|
|
|
io_sq_num = get_feat_ctx->max_queues.max_sq_num;
|
|
|
|
io_cq_num = get_feat_ctx->max_queues.max_sq_num;
|
|
|
|
|
|
|
|
io_queue_num = min_t(int, mp_ncpus, ENA_MAX_NUM_IO_QUEUES);
|
|
|
|
io_queue_num = min_t(int, io_queue_num, io_sq_num);
|
|
|
|
io_queue_num = min_t(int, io_queue_num, io_cq_num);
|
|
|
|
/* 1 IRQ for for mgmnt and 1 IRQ for each TX/RX pair */
|
|
|
|
io_queue_num = min_t(int, io_queue_num,
|
|
|
|
pci_msix_count(adapter->pdev) - 1);
|
|
|
|
#ifdef RSS
|
|
|
|
io_queue_num = min_t(int, io_queue_num, rss_getnumbuckets());
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return io_queue_num;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ena_calc_queue_size(struct ena_adapter *adapter,
|
|
|
|
uint16_t *max_tx_sgl_size, uint16_t *max_rx_sgl_size,
|
|
|
|
struct ena_com_dev_get_features_ctx *feat)
|
|
|
|
{
|
|
|
|
uint32_t queue_size = ENA_DEFAULT_RING_SIZE;
|
|
|
|
uint32_t v;
|
|
|
|
uint32_t q;
|
|
|
|
|
|
|
|
queue_size = min_t(uint32_t, queue_size,
|
|
|
|
feat->max_queues.max_cq_depth);
|
|
|
|
queue_size = min_t(uint32_t, queue_size,
|
|
|
|
feat->max_queues.max_sq_depth);
|
|
|
|
|
|
|
|
/* round down to the nearest power of 2 */
|
|
|
|
v = queue_size;
|
|
|
|
while (v != 0) {
|
|
|
|
if (powerof2(queue_size))
|
|
|
|
break;
|
|
|
|
v /= 2;
|
|
|
|
q = rounddown2(queue_size, v);
|
|
|
|
if (q != 0) {
|
|
|
|
queue_size = q;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (unlikely(!queue_size)) {
|
|
|
|
device_printf(adapter->pdev, "Invalid queue size\n");
|
|
|
|
return ENA_COM_FAULT;
|
|
|
|
}
|
|
|
|
|
|
|
|
*max_tx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS,
|
|
|
|
feat->max_queues.max_packet_tx_descs);
|
|
|
|
*max_rx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS,
|
|
|
|
feat->max_queues.max_packet_rx_descs);
|
|
|
|
|
|
|
|
return queue_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ena_rss_init_default(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_com_dev *ena_dev = adapter->ena_dev;
|
|
|
|
device_t dev = adapter->pdev;
|
|
|
|
int qid, rc, i;
|
|
|
|
|
|
|
|
rc = ena_com_rss_init(ena_dev, ENA_RX_RSS_TABLE_LOG_SIZE);
|
|
|
|
if (unlikely(rc)) {
|
|
|
|
device_printf(dev, "Cannot init RSS\n");
|
|
|
|
goto err_rss_init;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) {
|
|
|
|
#ifdef RSS
|
|
|
|
qid = rss_get_indirection_to_bucket(i);
|
|
|
|
qid = qid % adapter->num_queues;
|
|
|
|
#else
|
|
|
|
qid = i % adapter->num_queues;
|
|
|
|
#endif
|
|
|
|
rc = ena_com_indirect_table_fill_entry(ena_dev, i,
|
|
|
|
ENA_IO_RXQ_IDX(qid));
|
|
|
|
if (unlikely(rc && (rc != EPERM))) {
|
|
|
|
device_printf(dev, "Cannot fill indirect table\n");
|
|
|
|
goto err_fill_indir;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = ena_com_fill_hash_function(ena_dev, ENA_ADMIN_CRC32, NULL,
|
|
|
|
ENA_HASH_KEY_SIZE, 0xFFFFFFFF);
|
|
|
|
if (unlikely(rc && (rc != EPERM))) {
|
|
|
|
device_printf(dev, "Cannot fill hash function\n");
|
|
|
|
goto err_fill_indir;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = ena_com_set_default_hash_ctrl(ena_dev);
|
|
|
|
if (unlikely(rc && (rc != EPERM))) {
|
|
|
|
device_printf(dev, "Cannot fill hash control\n");
|
|
|
|
goto err_fill_indir;
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
err_fill_indir:
|
|
|
|
ena_com_rss_destroy(ena_dev);
|
|
|
|
err_rss_init:
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_rss_init_default_deferred(void *arg)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter;
|
|
|
|
devclass_t dc;
|
|
|
|
int max;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
dc = devclass_find("ena");
|
|
|
|
if (dc == NULL) {
|
|
|
|
ena_trace(ENA_DBG, "No devclass ena\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
max = devclass_get_maxunit(dc);
|
|
|
|
while (max-- >= 0) {
|
|
|
|
adapter = devclass_get_softc(dc, max);
|
|
|
|
if (adapter != NULL) {
|
|
|
|
rc = ena_rss_init_default(adapter);
|
|
|
|
adapter->rss_support = true;
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"WARNING: RSS was not properly initialized,"
|
|
|
|
" it will affect bandwith\n");
|
|
|
|
adapter->rss_support = false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
SYSINIT(ena_rss_init, SI_SUB_KICK_SCHEDULER, SI_ORDER_SECOND, ena_rss_init_default_deferred, NULL);
|
|
|
|
|
|
|
|
static void ena_config_host_info(struct ena_com_dev *ena_dev)
|
|
|
|
{
|
|
|
|
struct ena_admin_host_info *host_info;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
/* Allocate only the host info */
|
|
|
|
rc = ena_com_allocate_host_info(ena_dev);
|
|
|
|
if (rc) {
|
|
|
|
ena_trace(ENA_ALERT, "Cannot allocate host info\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
host_info = ena_dev->host_attr.host_info;
|
|
|
|
|
|
|
|
host_info->os_type = ENA_ADMIN_OS_FREEBSD;
|
|
|
|
host_info->kernel_ver = osreldate;
|
|
|
|
|
|
|
|
sprintf(host_info->kernel_ver_str, "%d", osreldate);
|
|
|
|
host_info->os_dist = 0;
|
|
|
|
strncpy(host_info->os_dist_str, osrelease,
|
|
|
|
sizeof(host_info->os_dist_str) - 1);
|
|
|
|
|
|
|
|
host_info->driver_version =
|
|
|
|
(DRV_MODULE_VER_MAJOR) |
|
|
|
|
(DRV_MODULE_VER_MINOR << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) |
|
|
|
|
(DRV_MODULE_VER_SUBMINOR << ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT);
|
|
|
|
|
|
|
|
rc = ena_com_set_host_attributes(ena_dev);
|
|
|
|
if (rc) {
|
|
|
|
if (rc == EPERM)
|
|
|
|
ena_trace(ENA_WARNING, "Cannot set host attributes\n");
|
|
|
|
else
|
|
|
|
ena_trace(ENA_ALERT, "Cannot set host attributes\n");
|
|
|
|
|
|
|
|
goto err;
|
|
|
|
}
|
|
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
err:
|
|
|
|
ena_com_delete_host_info(ena_dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
ena_device_init(struct ena_adapter *adapter, device_t pdev,
|
|
|
|
struct ena_com_dev_get_features_ctx *get_feat_ctx, int *wd_active)
|
|
|
|
{
|
|
|
|
struct ena_com_dev* ena_dev = adapter->ena_dev;
|
|
|
|
bool readless_supported;
|
|
|
|
uint32_t aenq_groups;
|
|
|
|
int dma_width;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
rc = ena_com_mmio_reg_read_request_init(ena_dev);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev, "failed to init mmio read less\n");
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The PCIe configuration space revision id indicate if mmio reg
|
|
|
|
* read is disabled
|
|
|
|
*/
|
|
|
|
readless_supported = !(pci_get_revid(pdev) & ENA_MMIO_DISABLE_REG_READ);
|
|
|
|
ena_com_set_mmio_read_mode(ena_dev, readless_supported);
|
|
|
|
|
|
|
|
rc = ena_com_dev_reset(ena_dev);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev, "Can not reset device\n");
|
|
|
|
goto err_mmio_read_less;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = ena_com_validate_version(ena_dev);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev, "device version is too low\n");
|
|
|
|
goto err_mmio_read_less;
|
|
|
|
}
|
|
|
|
|
|
|
|
dma_width = ena_com_get_dma_width(ena_dev);
|
|
|
|
if (dma_width < 0) {
|
|
|
|
device_printf(pdev, "Invalid dma width value %d", dma_width);
|
|
|
|
rc = dma_width;
|
|
|
|
goto err_mmio_read_less;
|
|
|
|
}
|
|
|
|
adapter->dma_width = dma_width;
|
|
|
|
|
|
|
|
/* ENA admin level init */
|
|
|
|
rc = ena_com_admin_init(ena_dev, &aenq_handlers, true);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev,
|
|
|
|
"Can not initialize ena admin queue with device\n");
|
|
|
|
goto err_mmio_read_less;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* To enable the msix interrupts the driver needs to know the number
|
|
|
|
* of queues. So the driver uses polling mode to retrieve this
|
|
|
|
* information
|
|
|
|
*/
|
|
|
|
ena_com_set_admin_polling_mode(ena_dev, true);
|
|
|
|
|
|
|
|
ena_config_host_info(ena_dev);
|
|
|
|
|
|
|
|
/* Get Device Attributes */
|
|
|
|
rc = ena_com_get_dev_attr_feat(ena_dev, get_feat_ctx);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev,
|
|
|
|
"Cannot get attribute for ena device rc: %d\n", rc);
|
|
|
|
goto err_admin_init;
|
|
|
|
}
|
|
|
|
|
|
|
|
aenq_groups = BIT(ENA_ADMIN_LINK_CHANGE) |
|
|
|
|
BIT(ENA_ADMIN_FATAL_ERROR) |
|
|
|
|
BIT(ENA_ADMIN_WARNING) |
|
|
|
|
BIT(ENA_ADMIN_NOTIFICATION) |
|
|
|
|
BIT(ENA_ADMIN_KEEP_ALIVE);
|
|
|
|
|
|
|
|
aenq_groups &= get_feat_ctx->aenq.supported_groups;
|
|
|
|
rc = ena_com_set_aenq_config(ena_dev, aenq_groups);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev, "Cannot configure aenq groups rc: %d\n", rc);
|
|
|
|
goto err_admin_init;
|
|
|
|
}
|
|
|
|
|
|
|
|
*wd_active = !!(aenq_groups & BIT(ENA_ADMIN_KEEP_ALIVE));
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_admin_init:
|
|
|
|
ena_com_delete_host_info(ena_dev);
|
|
|
|
ena_com_admin_destroy(ena_dev);
|
|
|
|
err_mmio_read_less:
|
|
|
|
ena_com_mmio_reg_read_request_destroy(ena_dev);
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *adapter,
|
|
|
|
int io_vectors)
|
|
|
|
{
|
|
|
|
struct ena_com_dev *ena_dev = adapter->ena_dev;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
rc = ena_enable_msix(adapter);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev, "Error with MSI-X enablement\n");
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
ena_setup_mgmnt_intr(adapter);
|
|
|
|
|
|
|
|
rc = ena_request_mgmnt_irq(adapter);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev, "Cannot setup mgmnt queue intr\n");
|
|
|
|
goto err_disable_msix;
|
|
|
|
}
|
|
|
|
|
|
|
|
ena_com_set_admin_polling_mode(ena_dev, false);
|
|
|
|
|
|
|
|
ena_com_admin_aenq_enable(ena_dev);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_disable_msix:
|
|
|
|
ena_disable_msix(adapter);
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Function called on ENA_ADMIN_KEEP_ALIVE event */
|
|
|
|
static void ena_keep_alive_wd(void *adapter_data,
|
|
|
|
struct ena_admin_aenq_entry *aenq_e)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = (struct ena_adapter *)adapter_data;
|
|
|
|
sbintime_t stime;
|
|
|
|
|
|
|
|
stime = getsbinuptime();
|
|
|
|
atomic_store_rel_64(&adapter->keep_alive_timestamp, stime);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check for keep alive expiration */
|
|
|
|
static void check_for_missing_keep_alive(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
sbintime_t timestamp, time;
|
|
|
|
|
|
|
|
if (adapter->wd_active == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (adapter->keep_alive_timeout == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
timestamp = atomic_load_acq_64(&adapter->keep_alive_timestamp);
|
|
|
|
time = getsbinuptime() - timestamp;
|
|
|
|
if (unlikely(time > adapter->keep_alive_timeout)) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Keep alive watchdog timeout.\n");
|
|
|
|
counter_u64_add(adapter->dev_stats.wd_expired, 1);
|
|
|
|
adapter->trigger_reset = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check if admin queue is enabled */
|
|
|
|
static void check_for_admin_com_state(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
if (unlikely(!ena_com_get_admin_running_state(adapter->ena_dev))) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"ENA admin queue is not in running state!\n");
|
|
|
|
counter_u64_add(adapter->dev_stats.admin_q_pause, 1);
|
|
|
|
adapter->trigger_reset = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check for TX which were not completed on time.
|
|
|
|
* Timeout is defined by "missing_tx_timeout".
|
|
|
|
* Reset will be performed if number of incompleted
|
|
|
|
* transactions exceeds "missing_tx_threshold".
|
|
|
|
*/
|
|
|
|
static void check_for_missing_tx_completions(struct ena_adapter *adapter)
|
|
|
|
{
|
|
|
|
struct ena_ring *tx_ring;
|
|
|
|
struct ena_tx_buffer *tx_info;
|
|
|
|
struct bintime curtime, time;
|
|
|
|
int i, j, budget, missed_tx;
|
|
|
|
|
|
|
|
/* Make sure the driver doesn't turn the device in other process */
|
|
|
|
rmb();
|
|
|
|
|
|
|
|
if (!adapter->up)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (adapter->trigger_reset)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (adapter->missing_tx_timeout == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
budget = adapter->missing_tx_max_queues;
|
|
|
|
getbinuptime(&curtime);
|
|
|
|
|
|
|
|
for (i = adapter->next_monitored_tx_qid; i < adapter->num_queues; i++) {
|
|
|
|
tx_ring = &adapter->tx_ring[i];
|
|
|
|
|
|
|
|
missed_tx = 0;
|
|
|
|
|
|
|
|
for (j = 0; j < tx_ring->ring_size; j++) {
|
|
|
|
tx_info = &tx_ring->tx_buffer_info[j];
|
|
|
|
|
|
|
|
if (!bintime_isset(&tx_info->timestamp))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
time = curtime;
|
|
|
|
bintime_sub(&time, &tx_info->timestamp);
|
|
|
|
|
|
|
|
/* Check again if packet is still waiting */
|
|
|
|
if (bintime_isset(&tx_info->timestamp) && unlikely(
|
|
|
|
bttosbt(time) > adapter->missing_tx_timeout)) {
|
|
|
|
if (tx_info->print_once)
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Found a Tx that wasn't completed "
|
|
|
|
"on time, qid %d, index %d.\n",
|
|
|
|
tx_ring->qid, j);
|
|
|
|
|
|
|
|
tx_info->print_once = false;
|
|
|
|
missed_tx++;
|
|
|
|
|
|
|
|
if (unlikely(missed_tx >
|
|
|
|
adapter->missing_tx_threshold)) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"The number of lost tx completion "
|
|
|
|
"is above the threshold (%d > %d). "
|
|
|
|
"Reset the device\n", missed_tx,
|
|
|
|
adapter->missing_tx_threshold);
|
|
|
|
adapter->trigger_reset = true;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
budget--;
|
|
|
|
if (!budget) {
|
|
|
|
i++;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
adapter->next_monitored_tx_qid = i % adapter->num_queues;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_timer_service(void *data)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = (struct ena_adapter *)data;
|
|
|
|
struct ena_admin_host_info *host_info =
|
|
|
|
adapter->ena_dev->host_attr.host_info;
|
|
|
|
|
|
|
|
check_for_missing_keep_alive(adapter);
|
|
|
|
|
|
|
|
check_for_admin_com_state(adapter);
|
|
|
|
|
|
|
|
check_for_missing_tx_completions(adapter);
|
|
|
|
|
|
|
|
if (host_info)
|
|
|
|
ena_update_host_info(host_info, adapter->ifp);
|
|
|
|
|
|
|
|
if (unlikely(adapter->trigger_reset)) {
|
|
|
|
device_printf(adapter->pdev, "Trigger reset is on\n");
|
|
|
|
taskqueue_enqueue(adapter->reset_tq, &adapter->reset_task);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Schedule another timeout one second from now.
|
|
|
|
*/
|
|
|
|
callout_schedule_sbt(&adapter->timer_service, SBT_1S, SBT_1S, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
ena_reset_task(void *arg, int pending)
|
|
|
|
{
|
|
|
|
struct ena_com_dev_get_features_ctx get_feat_ctx;
|
|
|
|
struct ena_adapter *adapter = (struct ena_adapter *)arg;
|
|
|
|
struct ena_com_dev *ena_dev = adapter->ena_dev;
|
|
|
|
bool dev_up;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
if (unlikely(!adapter->trigger_reset)) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"device reset scheduled but trigger_reset is off\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
sx_xlock(&adapter->ioctl_sx);
|
|
|
|
|
|
|
|
callout_drain(&adapter->timer_service);
|
|
|
|
|
|
|
|
dev_up = adapter->up;
|
|
|
|
|
|
|
|
ena_com_set_admin_running_state(ena_dev, false);
|
|
|
|
ena_free_mgmnt_irq(adapter);
|
|
|
|
ena_down(adapter);
|
|
|
|
ena_com_dev_reset(ena_dev);
|
|
|
|
ena_disable_msix(adapter);
|
|
|
|
ena_com_abort_admin_commands(ena_dev);
|
|
|
|
ena_com_wait_for_abort_completion(ena_dev);
|
|
|
|
ena_com_admin_destroy(ena_dev);
|
|
|
|
ena_com_mmio_reg_read_request_destroy(ena_dev);
|
|
|
|
|
|
|
|
adapter->trigger_reset = false;
|
|
|
|
|
|
|
|
/* Finished destroy part. Restart the device */
|
|
|
|
rc = ena_device_init(adapter, adapter->pdev, &get_feat_ctx,
|
|
|
|
&adapter->wd_active);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"ENA device init failed! (err: %d)\n", rc);
|
|
|
|
goto err_dev_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = ena_enable_msix_and_set_admin_interrupts(adapter,
|
|
|
|
adapter->num_queues);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev, "Enable MSI-X failed\n");
|
|
|
|
goto err_com_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If the interface was up before the reset bring it up */
|
|
|
|
if (dev_up) {
|
|
|
|
rc = ena_up(adapter);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Failed to create I/O queues\n");
|
|
|
|
goto err_msix_free;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
callout_reset_sbt(&adapter->timer_service, SBT_1S, SBT_1S,
|
|
|
|
ena_timer_service, (void *)adapter, 0);
|
|
|
|
|
|
|
|
sx_unlock(&adapter->ioctl_sx);
|
|
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
err_msix_free:
|
|
|
|
ena_com_dev_reset(ena_dev);
|
|
|
|
ena_free_mgmnt_irq(adapter);
|
|
|
|
ena_disable_msix(adapter);
|
|
|
|
err_com_free:
|
|
|
|
ena_com_admin_destroy(ena_dev);
|
|
|
|
err_dev_free:
|
|
|
|
device_printf(adapter->pdev, "ENA reset failed!\n");
|
|
|
|
adapter->running = false;
|
|
|
|
sx_unlock(&adapter->ioctl_sx);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_attach - Device Initialization Routine
|
|
|
|
* @pdev: device information struct
|
|
|
|
*
|
|
|
|
* Returns 0 on success, otherwise on failure.
|
|
|
|
*
|
|
|
|
* ena_attach initializes an adapter identified by a device structure.
|
|
|
|
* The OS initialization, configuring of the adapter private structure,
|
|
|
|
* and a hardware reset occur.
|
|
|
|
**/
|
|
|
|
static int
|
|
|
|
ena_attach(device_t pdev)
|
|
|
|
{
|
|
|
|
struct ena_com_dev_get_features_ctx get_feat_ctx;
|
|
|
|
static int version_printed;
|
|
|
|
struct ena_adapter *adapter;
|
|
|
|
struct ena_com_dev *ena_dev = NULL;
|
|
|
|
uint16_t tx_sgl_size = 0;
|
|
|
|
uint16_t rx_sgl_size = 0;
|
|
|
|
int io_queue_num;
|
|
|
|
int queue_size;
|
|
|
|
int rc;
|
|
|
|
struct sysctl_ctx_list *ctx;
|
|
|
|
struct sysctl_oid_list *children;
|
|
|
|
|
|
|
|
adapter = device_get_softc(pdev);
|
|
|
|
adapter->pdev = pdev;
|
|
|
|
ctx = device_get_sysctl_ctx(pdev);
|
|
|
|
children = SYSCTL_CHILDREN(device_get_sysctl_tree(pdev));
|
|
|
|
|
|
|
|
mtx_init(&adapter->global_mtx, "ENA global mtx", NULL, MTX_DEF);
|
|
|
|
sx_init(&adapter->ioctl_sx, "ENA ioctl sx");
|
|
|
|
|
|
|
|
/* Sysctl calls for Watchdog service */
|
|
|
|
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "wd_active",
|
|
|
|
CTLFLAG_RWTUN, &adapter->wd_active, 0,
|
|
|
|
"Watchdog is active");
|
|
|
|
|
|
|
|
SYSCTL_ADD_QUAD(ctx, children, OID_AUTO, "keep_alive_timeout",
|
|
|
|
CTLFLAG_RWTUN, &adapter->keep_alive_timeout,
|
|
|
|
"Timeout for Keep Alive messages");
|
|
|
|
|
|
|
|
SYSCTL_ADD_QUAD(ctx, children, OID_AUTO, "missing_tx_timeout",
|
|
|
|
CTLFLAG_RWTUN, &adapter->missing_tx_timeout,
|
|
|
|
"Timeout for TX completion");
|
|
|
|
|
|
|
|
SYSCTL_ADD_U32(ctx, children, OID_AUTO, "missing_tx_max_queues",
|
|
|
|
CTLFLAG_RWTUN, &adapter->missing_tx_max_queues, 0,
|
|
|
|
"Number of TX queues to check per run");
|
|
|
|
|
|
|
|
SYSCTL_ADD_U32(ctx, children, OID_AUTO, "missing_tx_threshold",
|
|
|
|
CTLFLAG_RWTUN, &adapter->missing_tx_threshold, 0,
|
|
|
|
"Max number of timeouted packets");
|
|
|
|
|
|
|
|
/* Set up the timer service */
|
|
|
|
callout_init_mtx(&adapter->timer_service, &adapter->global_mtx, 0);
|
|
|
|
adapter->keep_alive_timeout = DEFAULT_KEEP_ALIVE_TO;
|
|
|
|
adapter->missing_tx_timeout = DEFAULT_TX_CMP_TO;
|
|
|
|
adapter->missing_tx_max_queues = DEFAULT_TX_MONITORED_QUEUES;
|
|
|
|
adapter->missing_tx_threshold = DEFAULT_TX_CMP_THRESHOLD;
|
|
|
|
|
|
|
|
if (version_printed++ == 0)
|
|
|
|
device_printf(pdev, "%s\n", ena_version);
|
|
|
|
|
|
|
|
rc = ena_allocate_pci_resources(adapter);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev, "PCI resource allocation failed!\n");
|
|
|
|
ena_free_pci_resources(adapter);
|
|
|
|
goto err_pci_res;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate memory for ena_dev structure */
|
|
|
|
ena_dev = ENA_MEM_ALLOC(pdev, sizeof(struct ena_com_dev));
|
|
|
|
if (!ena_dev) {
|
|
|
|
device_printf(pdev, "allocating ena_dev failed\n");
|
|
|
|
rc = ENOMEM;
|
|
|
|
goto err_select_region;
|
|
|
|
}
|
|
|
|
|
|
|
|
adapter->ena_dev = ena_dev;
|
|
|
|
ena_dev->dmadev = pdev;
|
|
|
|
ena_dev->bus = malloc(sizeof(struct ena_bus), M_DEVBUF,
|
|
|
|
M_WAITOK | M_ZERO);
|
|
|
|
|
|
|
|
/* Store register resources */
|
|
|
|
((struct ena_bus*)(ena_dev->bus))->reg_bar_t =
|
|
|
|
rman_get_bustag(adapter->registers);
|
|
|
|
((struct ena_bus*)(ena_dev->bus))->reg_bar_h =
|
|
|
|
rman_get_bushandle(adapter->registers);
|
|
|
|
|
|
|
|
if (((struct ena_bus*)(ena_dev->bus))->reg_bar_h == 0) {
|
|
|
|
device_printf(pdev, "failed to pmap registers bar\n");
|
|
|
|
rc = ENXIO;
|
|
|
|
goto err_dev_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
|
|
|
|
|
|
|
|
/* Device initialization */
|
|
|
|
rc = ena_device_init(adapter, pdev, &get_feat_ctx, &adapter->wd_active);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev, "ENA device init failed! (err: %d)\n", rc);
|
|
|
|
rc = ENXIO;
|
|
|
|
goto err_bus_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
adapter->keep_alive_timestamp = getsbinuptime();
|
|
|
|
|
|
|
|
adapter->tx_offload_cap = get_feat_ctx.offload.tx;
|
|
|
|
|
|
|
|
/* Set for sure that interface is not up */
|
|
|
|
adapter->up = false;
|
|
|
|
|
|
|
|
memcpy(adapter->mac_addr, get_feat_ctx.dev_attr.mac_addr,
|
|
|
|
ETHER_ADDR_LEN);
|
|
|
|
|
|
|
|
adapter->small_copy_len =
|
|
|
|
ENA_DEFAULT_SMALL_PACKET_LEN;
|
|
|
|
|
|
|
|
/* calculate IO queue number to create */
|
|
|
|
io_queue_num = ena_calc_io_queue_num(adapter, &get_feat_ctx);
|
|
|
|
|
|
|
|
ENA_ASSERT(io_queue_num > 0, "Invalid queue number: %d\n",
|
|
|
|
io_queue_num);
|
|
|
|
adapter->num_queues = io_queue_num;
|
|
|
|
|
|
|
|
/* calculatre ring sizes */
|
|
|
|
queue_size = ena_calc_queue_size(adapter,&tx_sgl_size,
|
|
|
|
&rx_sgl_size, &get_feat_ctx);
|
|
|
|
if ((queue_size <= 0) || (io_queue_num <= 0)) {
|
|
|
|
rc = ENA_COM_FAULT;
|
|
|
|
goto err_com_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
adapter->tx_ring_size = queue_size;
|
|
|
|
adapter->rx_ring_size = queue_size;
|
|
|
|
|
|
|
|
adapter->max_tx_sgl_size = tx_sgl_size;
|
|
|
|
adapter->max_rx_sgl_size = rx_sgl_size;
|
|
|
|
|
|
|
|
/* set up dma tags for rx and tx buffers */
|
|
|
|
rc = ena_setup_tx_dma_tag(adapter);
|
|
|
|
if (rc)
|
|
|
|
goto dma_tx_err;
|
|
|
|
|
|
|
|
rc = ena_setup_rx_dma_tag(adapter);
|
|
|
|
if (rc)
|
|
|
|
goto dma_rx_err;
|
|
|
|
|
|
|
|
/* initialize rings basic information */
|
|
|
|
device_printf(pdev, "initalize %d io queues\n", io_queue_num);
|
|
|
|
rc = ena_init_io_rings(adapter);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev,"Error with initialization of IO rings\n");
|
|
|
|
goto err_io_init;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* setup network interface */
|
|
|
|
rc = ena_setup_ifnet(pdev, adapter, &get_feat_ctx);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev,"Error with network interface setup\n");
|
|
|
|
goto err_com_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = ena_enable_msix_and_set_admin_interrupts(adapter, io_queue_num);
|
|
|
|
if (rc) {
|
|
|
|
device_printf(pdev,
|
|
|
|
"Failed to enable and set the admin interrupts\n");
|
|
|
|
goto err_ifp_free;
|
|
|
|
}
|
|
|
|
|
2017-05-30 11:56:54 +00:00
|
|
|
/* Initialize reset task queue */
|
|
|
|
TASK_INIT(&adapter->reset_task, 0, ena_reset_task, adapter);
|
|
|
|
adapter->reset_tq = taskqueue_create("ena_reset_enqueue",
|
|
|
|
M_WAITOK | M_ZERO, taskqueue_thread_enqueue, &adapter->reset_tq);
|
|
|
|
if (adapter->reset_tq == NULL) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Unable to create reset task queue\n");
|
|
|
|
goto err_reset_tq;
|
|
|
|
}
|
|
|
|
taskqueue_start_threads(&adapter->reset_tq, 1, PI_NET,
|
|
|
|
"%s rstq", device_get_nameunit(adapter->pdev));
|
|
|
|
|
2017-05-30 11:58:51 +00:00
|
|
|
/* Initialize task queue responsible for updating hw stats */
|
|
|
|
TASK_INIT(&adapter->stats_task, 0, ena_update_hw_stats, adapter);
|
|
|
|
adapter->stats_tq = taskqueue_create_fast("ena_stats_update",
|
|
|
|
M_WAITOK | M_ZERO, taskqueue_thread_enqueue, &adapter->stats_tq);
|
|
|
|
if (adapter->stats_tq == NULL) {
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Unable to create taskqueue for updating hw stats\n");
|
|
|
|
goto err_stats_tq;
|
|
|
|
}
|
|
|
|
taskqueue_start_threads(&adapter->stats_tq, 1, PI_REALTIME,
|
|
|
|
"%s stats tq", device_get_nameunit(adapter->pdev));
|
|
|
|
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
/* Initialize statistics */
|
|
|
|
ena_alloc_counters((counter_u64_t *)&adapter->dev_stats,
|
|
|
|
sizeof(struct ena_stats_dev));
|
|
|
|
ena_update_stats_counters(adapter);
|
|
|
|
ena_sysctl_add_nodes(adapter);
|
|
|
|
|
|
|
|
/* Tell the stack that the interface is not active */
|
|
|
|
if_setdrvflagbits(adapter->ifp, IFF_DRV_OACTIVE, IFF_DRV_RUNNING);
|
|
|
|
|
|
|
|
adapter->running = true;
|
|
|
|
return (0);
|
|
|
|
|
2017-05-30 11:58:51 +00:00
|
|
|
err_stats_tq:
|
|
|
|
taskqueue_free(adapter->reset_tq);
|
2017-05-30 11:56:54 +00:00
|
|
|
err_reset_tq:
|
|
|
|
ena_free_mgmnt_irq(adapter);
|
|
|
|
ena_disable_msix(adapter);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
err_ifp_free:
|
|
|
|
if_detach(adapter->ifp);
|
|
|
|
if_free(adapter->ifp);
|
|
|
|
err_com_free:
|
|
|
|
ena_free_all_io_rings_resources(adapter);
|
|
|
|
err_io_init:
|
|
|
|
ena_free_rx_dma_tag(adapter);
|
|
|
|
dma_rx_err:
|
|
|
|
ena_free_tx_dma_tag(adapter);
|
|
|
|
dma_tx_err:
|
|
|
|
ena_com_admin_destroy(ena_dev);
|
|
|
|
ena_com_delete_host_info(ena_dev);
|
|
|
|
err_bus_free:
|
|
|
|
free(ena_dev->bus, M_DEVBUF);
|
|
|
|
err_dev_free:
|
|
|
|
free(ena_dev, M_DEVBUF);
|
|
|
|
err_select_region:
|
|
|
|
ena_free_pci_resources(adapter);
|
|
|
|
err_pci_res:
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* ena_detach - Device Removal Routine
|
|
|
|
* @pdev: device information struct
|
|
|
|
*
|
|
|
|
* ena_detach is called by the device subsystem to alert the driver
|
|
|
|
* that it should release a PCI device.
|
|
|
|
**/
|
|
|
|
static int
|
|
|
|
ena_detach(device_t pdev)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = device_get_softc(pdev);
|
|
|
|
struct ena_com_dev *ena_dev = adapter->ena_dev;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
/* Make sure VLANS are not using driver */
|
|
|
|
if (adapter->ifp->if_vlantrunk != NULL) {
|
|
|
|
device_printf(adapter->pdev ,"VLAN is in use, detach first\n");
|
|
|
|
return (EBUSY);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Free reset task and callout */
|
|
|
|
callout_drain(&adapter->timer_service);
|
|
|
|
while (taskqueue_cancel(adapter->reset_tq, &adapter->reset_task, NULL))
|
|
|
|
taskqueue_drain(adapter->reset_tq, &adapter->reset_task);
|
|
|
|
taskqueue_free(adapter->reset_tq);
|
|
|
|
|
2017-05-30 11:55:02 +00:00
|
|
|
sx_xlock(&adapter->ioctl_sx);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
ena_down(adapter);
|
2017-05-30 11:55:02 +00:00
|
|
|
sx_unlock(&adapter->ioctl_sx);
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
|
2017-05-30 11:58:51 +00:00
|
|
|
taskqueue_free(adapter->stats_tq);
|
|
|
|
|
Add support for Amazon Elastic Network Adapter (ENA) NIC
ENA is a networking interface designed to make good use of modern CPU
features and system architectures.
The ENA device exposes a lightweight management interface with a
minimal set of memory mapped registers and extendable command set
through an Admin Queue.
The driver supports a range of ENA devices, is link-speed independent
(i.e., the same driver is used for 10GbE, 25GbE, 40GbE, etc.), and has
a negotiated and extendable feature set.
Some ENA devices support SR-IOV. This driver is used for both the
SR-IOV Physical Function (PF) and Virtual Function (VF) devices.
ENA devices enable high speed and low overhead network traffic
processing by providing multiple Tx/Rx queue pairs (the maximum number
is advertised by the device via the Admin Queue), a dedicated MSI-X
interrupt vector per Tx/Rx queue pair, and CPU cacheline optimized
data placement.
The ENA driver supports industry standard TCP/IP offload features such
as checksum offload and TCP transmit segmentation offload (TSO).
Receive-side scaling (RSS) is supported for multi-core scaling.
The ENA driver and its corresponding devices implement health
monitoring mechanisms such as watchdog, enabling the device and driver
to recover in a manner transparent to the application, as well as
debug logs.
Some of the ENA devices support a working mode called Low-latency
Queue (LLQ), which saves several more microseconds. This feature will
be implemented for driver in future releases.
Submitted by: Michal Krawczyk <mk@semihalf.com>
Jakub Palider <jpa@semihalf.com>
Jan Medala <jan@semihalf.com>
Obtained from: Semihalf
Sponsored by: Amazon.com Inc.
Differential revision: https://reviews.freebsd.org/D10427
2017-05-22 14:46:13 +00:00
|
|
|
if (adapter->ifp != NULL) {
|
|
|
|
ether_ifdetach(adapter->ifp);
|
|
|
|
if_free(adapter->ifp);
|
|
|
|
}
|
|
|
|
|
|
|
|
ena_free_all_io_rings_resources(adapter);
|
|
|
|
|
|
|
|
ena_free_counters((counter_u64_t *)&adapter->dev_stats,
|
|
|
|
sizeof(struct ena_stats_dev));
|
|
|
|
|
|
|
|
if (adapter->rss_support)
|
|
|
|
ena_com_rss_destroy(ena_dev);
|
|
|
|
|
|
|
|
rc = ena_free_rx_dma_tag(adapter);
|
|
|
|
if (rc)
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Unmapped RX DMA tag associations\n");
|
|
|
|
|
|
|
|
rc = ena_free_tx_dma_tag(adapter);
|
|
|
|
if (rc)
|
|
|
|
device_printf(adapter->pdev,
|
|
|
|
"Unmapped TX DMA tag associations\n");
|
|
|
|
|
|
|
|
/* Reset the device only if the device is running. */
|
|
|
|
if (adapter->running)
|
|
|
|
ena_com_dev_reset(ena_dev);
|
|
|
|
|
|
|
|
ena_com_delete_host_info(ena_dev);
|
|
|
|
|
|
|
|
ena_com_admin_destroy(ena_dev);
|
|
|
|
|
|
|
|
ena_free_irqs(adapter);
|
|
|
|
|
|
|
|
ena_com_mmio_reg_read_request_destroy(ena_dev);
|
|
|
|
|
|
|
|
ena_free_pci_resources(adapter);
|
|
|
|
|
|
|
|
mtx_destroy(&adapter->global_mtx);
|
|
|
|
sx_destroy(&adapter->ioctl_sx);
|
|
|
|
|
|
|
|
if (ena_dev->bus != NULL)
|
|
|
|
free(ena_dev->bus, M_DEVBUF);
|
|
|
|
|
|
|
|
if (ena_dev != NULL)
|
|
|
|
free(ena_dev, M_DEVBUF);
|
|
|
|
|
|
|
|
return (bus_generic_detach(pdev));
|
|
|
|
}
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
******************************** AENQ Handlers *******************************
|
|
|
|
*****************************************************************************/
|
|
|
|
/**
|
|
|
|
* ena_update_on_link_change:
|
|
|
|
* Notify the network interface about the change in link status
|
|
|
|
**/
|
|
|
|
static void
|
|
|
|
ena_update_on_link_change(void *adapter_data,
|
|
|
|
struct ena_admin_aenq_entry *aenq_e)
|
|
|
|
{
|
|
|
|
struct ena_adapter *adapter = (struct ena_adapter *)adapter_data;
|
|
|
|
struct ena_admin_aenq_link_change_desc *aenq_desc;
|
|
|
|
int status;
|
|
|
|
if_t ifp;
|
|
|
|
|
|
|
|
aenq_desc = (struct ena_admin_aenq_link_change_desc *)aenq_e;
|
|
|
|
ifp = adapter->ifp;
|
|
|
|
status = aenq_desc->flags &
|
|
|
|
ENA_ADMIN_AENQ_LINK_CHANGE_DESC_LINK_STATUS_MASK;
|
|
|
|
|
|
|
|
if (status != 0) {
|
|
|
|
device_printf(adapter->pdev, "link is UP\n");
|
|
|
|
if_link_state_change(ifp, LINK_STATE_UP);
|
|
|
|
} else if (status == 0) {
|
|
|
|
device_printf(adapter->pdev, "link is DOWN\n");
|
|
|
|
if_link_state_change(ifp, LINK_STATE_DOWN);
|
|
|
|
} else {
|
|
|
|
device_printf(adapter->pdev, "invalid value recvd\n");
|
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
|
|
|
|
adapter->link_status = status;
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* This handler will called for unknown event group or unimplemented handlers
|
|
|
|
**/
|
|
|
|
static void
|
|
|
|
unimplemented_aenq_handler(void *data,
|
|
|
|
struct ena_admin_aenq_entry *aenq_e)
|
|
|
|
{
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct ena_aenq_handlers aenq_handlers = {
|
|
|
|
.handlers = {
|
|
|
|
[ENA_ADMIN_LINK_CHANGE] = ena_update_on_link_change,
|
|
|
|
[ENA_ADMIN_KEEP_ALIVE] = ena_keep_alive_wd,
|
|
|
|
},
|
|
|
|
.unimplemented_handler = unimplemented_aenq_handler
|
|
|
|
};
|
|
|
|
|
|
|
|
/*********************************************************************
|
|
|
|
* FreeBSD Device Interface Entry Points
|
|
|
|
*********************************************************************/
|
|
|
|
|
|
|
|
static device_method_t ena_methods[] = {
|
|
|
|
/* Device interface */
|
|
|
|
DEVMETHOD(device_probe, ena_probe),
|
|
|
|
DEVMETHOD(device_attach, ena_attach),
|
|
|
|
DEVMETHOD(device_detach, ena_detach),
|
|
|
|
DEVMETHOD_END
|
|
|
|
};
|
|
|
|
|
|
|
|
static driver_t ena_driver = {
|
|
|
|
"ena", ena_methods, sizeof(struct ena_adapter),
|
|
|
|
};
|
|
|
|
|
|
|
|
devclass_t ena_devclass;
|
|
|
|
DRIVER_MODULE(ena, pci, ena_driver, ena_devclass, 0, 0);
|
|
|
|
MODULE_DEPEND(ena, pci, 1, 1, 1);
|
|
|
|
MODULE_DEPEND(ena, ether, 1, 1, 1);
|
|
|
|
|
|
|
|
/*********************************************************************/
|