ea351d3f14
Sponsored by: Limelight Networks
5626 lines
150 KiB
C
5626 lines
150 KiB
C
/*-
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* Copyright (c) 2014-2017, Matthew Macy <mmacy@nextbsd.org>
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Neither the name of Matthew Macy nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* 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 "opt_inet.h"
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#include "opt_inet6.h"
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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/bus.h>
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#include <sys/eventhandler.h>
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#include <sys/sockio.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/module.h>
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#include <sys/kobj.h>
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#include <sys/rman.h>
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#include <sys/sbuf.h>
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#include <sys/smp.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/syslog.h>
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#include <sys/taskqueue.h>
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#include <sys/limits.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_types.h>
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#include <net/if_media.h>
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#include <net/bpf.h>
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#include <net/ethernet.h>
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#include <net/mp_ring.h>
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#include <netinet/in.h>
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#include <netinet/in_pcb.h>
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#include <netinet/tcp_lro.h>
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#include <netinet/in_systm.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 <machine/bus.h>
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#include <machine/in_cksum.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <dev/led/led.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pci_private.h>
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#include <net/iflib.h>
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#include "ifdi_if.h"
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#if defined(__i386__) || defined(__amd64__)
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#include <sys/memdesc.h>
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#include <machine/bus.h>
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#include <machine/md_var.h>
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#include <machine/specialreg.h>
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#include <x86/include/busdma_impl.h>
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#include <x86/iommu/busdma_dmar.h>
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#endif
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/*
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* enable accounting of every mbuf as it comes in to and goes out of
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* iflib's software descriptor references
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*/
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#define MEMORY_LOGGING 0
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/*
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* Enable mbuf vectors for compressing long mbuf chains
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*/
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/*
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* NB:
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* - Prefetching in tx cleaning should perhaps be a tunable. The distance ahead
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* we prefetch needs to be determined by the time spent in m_free vis a vis
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* the cost of a prefetch. This will of course vary based on the workload:
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* - NFLX's m_free path is dominated by vm-based M_EXT manipulation which
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* is quite expensive, thus suggesting very little prefetch.
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* - small packet forwarding which is just returning a single mbuf to
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* UMA will typically be very fast vis a vis the cost of a memory
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* access.
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*/
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/*
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* File organization:
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* - private structures
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* - iflib private utility functions
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* - ifnet functions
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* - vlan registry and other exported functions
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* - iflib public core functions
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*
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*
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*/
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static MALLOC_DEFINE(M_IFLIB, "iflib", "ifnet library");
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struct iflib_txq;
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typedef struct iflib_txq *iflib_txq_t;
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struct iflib_rxq;
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typedef struct iflib_rxq *iflib_rxq_t;
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struct iflib_fl;
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typedef struct iflib_fl *iflib_fl_t;
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struct iflib_ctx;
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typedef struct iflib_filter_info {
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driver_filter_t *ifi_filter;
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void *ifi_filter_arg;
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struct grouptask *ifi_task;
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void *ifi_ctx;
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} *iflib_filter_info_t;
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struct iflib_ctx {
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KOBJ_FIELDS;
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/*
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* Pointer to hardware driver's softc
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*/
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void *ifc_softc;
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device_t ifc_dev;
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if_t ifc_ifp;
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cpuset_t ifc_cpus;
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if_shared_ctx_t ifc_sctx;
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struct if_softc_ctx ifc_softc_ctx;
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struct mtx ifc_mtx;
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uint16_t ifc_nhwtxqs;
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uint16_t ifc_nhwrxqs;
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iflib_txq_t ifc_txqs;
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iflib_rxq_t ifc_rxqs;
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uint32_t ifc_if_flags;
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uint32_t ifc_flags;
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uint32_t ifc_max_fl_buf_size;
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int ifc_in_detach;
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int ifc_link_state;
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int ifc_link_irq;
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int ifc_pause_frames;
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int ifc_watchdog_events;
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struct cdev *ifc_led_dev;
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struct resource *ifc_msix_mem;
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struct if_irq ifc_legacy_irq;
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struct grouptask ifc_admin_task;
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struct grouptask ifc_vflr_task;
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struct iflib_filter_info ifc_filter_info;
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struct ifmedia ifc_media;
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struct sysctl_oid *ifc_sysctl_node;
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uint16_t ifc_sysctl_ntxqs;
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uint16_t ifc_sysctl_nrxqs;
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uint16_t ifc_sysctl_qs_eq_override;
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qidx_t ifc_sysctl_ntxds[8];
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qidx_t ifc_sysctl_nrxds[8];
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struct if_txrx ifc_txrx;
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#define isc_txd_encap ifc_txrx.ift_txd_encap
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#define isc_txd_flush ifc_txrx.ift_txd_flush
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#define isc_txd_credits_update ifc_txrx.ift_txd_credits_update
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#define isc_rxd_available ifc_txrx.ift_rxd_available
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#define isc_rxd_pkt_get ifc_txrx.ift_rxd_pkt_get
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#define isc_rxd_refill ifc_txrx.ift_rxd_refill
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#define isc_rxd_flush ifc_txrx.ift_rxd_flush
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#define isc_rxd_refill ifc_txrx.ift_rxd_refill
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#define isc_rxd_refill ifc_txrx.ift_rxd_refill
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#define isc_legacy_intr ifc_txrx.ift_legacy_intr
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eventhandler_tag ifc_vlan_attach_event;
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eventhandler_tag ifc_vlan_detach_event;
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uint8_t ifc_mac[ETHER_ADDR_LEN];
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char ifc_mtx_name[16];
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};
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void *
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iflib_get_softc(if_ctx_t ctx)
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{
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return (ctx->ifc_softc);
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}
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device_t
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iflib_get_dev(if_ctx_t ctx)
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{
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return (ctx->ifc_dev);
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}
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if_t
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iflib_get_ifp(if_ctx_t ctx)
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{
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return (ctx->ifc_ifp);
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}
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struct ifmedia *
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iflib_get_media(if_ctx_t ctx)
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{
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return (&ctx->ifc_media);
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}
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void
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iflib_set_mac(if_ctx_t ctx, uint8_t mac[ETHER_ADDR_LEN])
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{
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bcopy(mac, ctx->ifc_mac, ETHER_ADDR_LEN);
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}
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if_softc_ctx_t
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iflib_get_softc_ctx(if_ctx_t ctx)
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{
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return (&ctx->ifc_softc_ctx);
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}
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if_shared_ctx_t
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iflib_get_sctx(if_ctx_t ctx)
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{
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return (ctx->ifc_sctx);
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}
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#define IP_ALIGNED(m) ((((uintptr_t)(m)->m_data) & 0x3) == 0x2)
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#define CACHE_PTR_INCREMENT (CACHE_LINE_SIZE/sizeof(void*))
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#define CACHE_PTR_NEXT(ptr) ((void *)(((uintptr_t)(ptr)+CACHE_LINE_SIZE-1) & (CACHE_LINE_SIZE-1)))
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#define LINK_ACTIVE(ctx) ((ctx)->ifc_link_state == LINK_STATE_UP)
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#define CTX_IS_VF(ctx) ((ctx)->ifc_sctx->isc_flags & IFLIB_IS_VF)
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#define RX_SW_DESC_MAP_CREATED (1 << 0)
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#define TX_SW_DESC_MAP_CREATED (1 << 1)
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#define RX_SW_DESC_INUSE (1 << 3)
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#define TX_SW_DESC_MAPPED (1 << 4)
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typedef struct iflib_sw_rx_desc_array {
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bus_dmamap_t *ifsd_map; /* bus_dma maps for packet */
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struct mbuf **ifsd_m; /* pkthdr mbufs */
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caddr_t *ifsd_cl; /* direct cluster pointer for rx */
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uint8_t *ifsd_flags;
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} iflib_rxsd_array_t;
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typedef struct iflib_sw_tx_desc_array {
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bus_dmamap_t *ifsd_map; /* bus_dma maps for packet */
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struct mbuf **ifsd_m; /* pkthdr mbufs */
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uint8_t *ifsd_flags;
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} if_txsd_vec_t;
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/* magic number that should be high enough for any hardware */
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#define IFLIB_MAX_TX_SEGS 128
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#define IFLIB_MAX_RX_SEGS 32
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#define IFLIB_RX_COPY_THRESH 128
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#define IFLIB_MAX_RX_REFRESH 32
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/* The minimum descriptors per second before we start coalescing */
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#define IFLIB_MIN_DESC_SEC 16384
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#define IFLIB_DEFAULT_TX_UPDATE_FREQ 16
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#define IFLIB_QUEUE_IDLE 0
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#define IFLIB_QUEUE_HUNG 1
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#define IFLIB_QUEUE_WORKING 2
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/* maximum number of txqs that can share an rx interrupt */
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#define IFLIB_MAX_TX_SHARED_INTR 4
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/* this should really scale with ring size - this is a fairly arbitrary value */
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#define TX_BATCH_SIZE 32
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#define IFLIB_RESTART_BUDGET 8
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#define IFC_LEGACY 0x001
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#define IFC_QFLUSH 0x002
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#define IFC_MULTISEG 0x004
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#define IFC_DMAR 0x008
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#define IFC_SC_ALLOCATED 0x010
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#define IFC_INIT_DONE 0x020
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#define IFC_PREFETCH 0x040
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#define IFC_DO_RESET 0x080
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#define IFC_CHECK_HUNG 0x100
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#define CSUM_OFFLOAD (CSUM_IP_TSO|CSUM_IP6_TSO|CSUM_IP| \
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CSUM_IP_UDP|CSUM_IP_TCP|CSUM_IP_SCTP| \
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CSUM_IP6_UDP|CSUM_IP6_TCP|CSUM_IP6_SCTP)
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struct iflib_txq {
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qidx_t ift_in_use;
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qidx_t ift_cidx;
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qidx_t ift_cidx_processed;
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qidx_t ift_pidx;
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uint8_t ift_gen;
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uint8_t ift_br_offset;
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uint16_t ift_npending;
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uint16_t ift_db_pending;
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uint16_t ift_rs_pending;
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/* implicit pad */
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uint8_t ift_txd_size[8];
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uint64_t ift_processed;
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uint64_t ift_cleaned;
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uint64_t ift_cleaned_prev;
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#if MEMORY_LOGGING
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uint64_t ift_enqueued;
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uint64_t ift_dequeued;
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#endif
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uint64_t ift_no_tx_dma_setup;
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uint64_t ift_no_desc_avail;
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uint64_t ift_mbuf_defrag_failed;
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uint64_t ift_mbuf_defrag;
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uint64_t ift_map_failed;
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uint64_t ift_txd_encap_efbig;
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uint64_t ift_pullups;
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struct mtx ift_mtx;
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struct mtx ift_db_mtx;
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/* constant values */
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if_ctx_t ift_ctx;
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struct ifmp_ring *ift_br;
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struct grouptask ift_task;
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qidx_t ift_size;
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uint16_t ift_id;
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struct callout ift_timer;
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if_txsd_vec_t ift_sds;
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uint8_t ift_qstatus;
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uint8_t ift_closed;
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uint8_t ift_update_freq;
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struct iflib_filter_info ift_filter_info;
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bus_dma_tag_t ift_desc_tag;
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bus_dma_tag_t ift_tso_desc_tag;
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iflib_dma_info_t ift_ifdi;
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#define MTX_NAME_LEN 16
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char ift_mtx_name[MTX_NAME_LEN];
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char ift_db_mtx_name[MTX_NAME_LEN];
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bus_dma_segment_t ift_segs[IFLIB_MAX_TX_SEGS] __aligned(CACHE_LINE_SIZE);
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#ifdef IFLIB_DIAGNOSTICS
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uint64_t ift_cpu_exec_count[256];
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#endif
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} __aligned(CACHE_LINE_SIZE);
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struct iflib_fl {
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qidx_t ifl_cidx;
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qidx_t ifl_pidx;
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qidx_t ifl_credits;
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uint8_t ifl_gen;
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uint8_t ifl_rxd_size;
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#if MEMORY_LOGGING
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uint64_t ifl_m_enqueued;
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uint64_t ifl_m_dequeued;
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uint64_t ifl_cl_enqueued;
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uint64_t ifl_cl_dequeued;
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#endif
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/* implicit pad */
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/* constant */
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qidx_t ifl_size;
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uint16_t ifl_buf_size;
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uint16_t ifl_cltype;
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uma_zone_t ifl_zone;
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iflib_rxsd_array_t ifl_sds;
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iflib_rxq_t ifl_rxq;
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uint8_t ifl_id;
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bus_dma_tag_t ifl_desc_tag;
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iflib_dma_info_t ifl_ifdi;
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uint64_t ifl_bus_addrs[IFLIB_MAX_RX_REFRESH] __aligned(CACHE_LINE_SIZE);
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caddr_t ifl_vm_addrs[IFLIB_MAX_RX_REFRESH];
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qidx_t ifl_rxd_idxs[IFLIB_MAX_RX_REFRESH];
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} __aligned(CACHE_LINE_SIZE);
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static inline qidx_t
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get_inuse(int size, qidx_t cidx, qidx_t pidx, uint8_t gen)
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{
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qidx_t used;
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if (pidx > cidx)
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used = pidx - cidx;
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else if (pidx < cidx)
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used = size - cidx + pidx;
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else if (gen == 0 && pidx == cidx)
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used = 0;
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else if (gen == 1 && pidx == cidx)
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used = size;
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else
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panic("bad state");
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return (used);
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}
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#define TXQ_AVAIL(txq) (txq->ift_size - get_inuse(txq->ift_size, txq->ift_cidx, txq->ift_pidx, txq->ift_gen))
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#define IDXDIFF(head, tail, wrap) \
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((head) >= (tail) ? (head) - (tail) : (wrap) - (tail) + (head))
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struct iflib_rxq {
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/* If there is a separate completion queue -
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* these are the cq cidx and pidx. Otherwise
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* these are unused.
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*/
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qidx_t ifr_size;
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qidx_t ifr_cq_cidx;
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qidx_t ifr_cq_pidx;
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uint8_t ifr_cq_gen;
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uint8_t ifr_fl_offset;
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if_ctx_t ifr_ctx;
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iflib_fl_t ifr_fl;
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uint64_t ifr_rx_irq;
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uint16_t ifr_id;
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uint8_t ifr_lro_enabled;
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uint8_t ifr_nfl;
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uint8_t ifr_ntxqirq;
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uint8_t ifr_txqid[IFLIB_MAX_TX_SHARED_INTR];
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struct lro_ctrl ifr_lc;
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struct grouptask ifr_task;
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struct iflib_filter_info ifr_filter_info;
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iflib_dma_info_t ifr_ifdi;
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/* dynamically allocate if any drivers need a value substantially larger than this */
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struct if_rxd_frag ifr_frags[IFLIB_MAX_RX_SEGS] __aligned(CACHE_LINE_SIZE);
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#ifdef IFLIB_DIAGNOSTICS
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uint64_t ifr_cpu_exec_count[256];
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#endif
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} __aligned(CACHE_LINE_SIZE);
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typedef struct if_rxsd {
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caddr_t *ifsd_cl;
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struct mbuf **ifsd_m;
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iflib_fl_t ifsd_fl;
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qidx_t ifsd_cidx;
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} *if_rxsd_t;
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/* multiple of word size */
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#ifdef __LP64__
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#define PKT_INFO_SIZE 6
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#define RXD_INFO_SIZE 5
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#define PKT_TYPE uint64_t
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#else
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#define PKT_INFO_SIZE 11
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#define RXD_INFO_SIZE 8
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#define PKT_TYPE uint32_t
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#endif
|
|
#define PKT_LOOP_BOUND ((PKT_INFO_SIZE/3)*3)
|
|
#define RXD_LOOP_BOUND ((RXD_INFO_SIZE/4)*4)
|
|
|
|
typedef struct if_pkt_info_pad {
|
|
PKT_TYPE pkt_val[PKT_INFO_SIZE];
|
|
} *if_pkt_info_pad_t;
|
|
typedef struct if_rxd_info_pad {
|
|
PKT_TYPE rxd_val[RXD_INFO_SIZE];
|
|
} *if_rxd_info_pad_t;
|
|
|
|
CTASSERT(sizeof(struct if_pkt_info_pad) == sizeof(struct if_pkt_info));
|
|
CTASSERT(sizeof(struct if_rxd_info_pad) == sizeof(struct if_rxd_info));
|
|
|
|
|
|
static inline void
|
|
pkt_info_zero(if_pkt_info_t pi)
|
|
{
|
|
if_pkt_info_pad_t pi_pad;
|
|
|
|
pi_pad = (if_pkt_info_pad_t)pi;
|
|
pi_pad->pkt_val[0] = 0; pi_pad->pkt_val[1] = 0; pi_pad->pkt_val[2] = 0;
|
|
pi_pad->pkt_val[3] = 0; pi_pad->pkt_val[4] = 0; pi_pad->pkt_val[5] = 0;
|
|
#ifndef __LP64__
|
|
pi_pad->pkt_val[6] = 0; pi_pad->pkt_val[7] = 0; pi_pad->pkt_val[8] = 0;
|
|
pi_pad->pkt_val[9] = 0; pi_pad->pkt_val[10] = 0;
|
|
#endif
|
|
}
|
|
|
|
static inline void
|
|
rxd_info_zero(if_rxd_info_t ri)
|
|
{
|
|
if_rxd_info_pad_t ri_pad;
|
|
int i;
|
|
|
|
ri_pad = (if_rxd_info_pad_t)ri;
|
|
for (i = 0; i < RXD_LOOP_BOUND; i += 4) {
|
|
ri_pad->rxd_val[i] = 0;
|
|
ri_pad->rxd_val[i+1] = 0;
|
|
ri_pad->rxd_val[i+2] = 0;
|
|
ri_pad->rxd_val[i+3] = 0;
|
|
}
|
|
#ifdef __LP64__
|
|
ri_pad->rxd_val[RXD_INFO_SIZE-1] = 0;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Only allow a single packet to take up most 1/nth of the tx ring
|
|
*/
|
|
#define MAX_SINGLE_PACKET_FRACTION 12
|
|
#define IF_BAD_DMA (bus_addr_t)-1
|
|
|
|
#define CTX_ACTIVE(ctx) ((if_getdrvflags((ctx)->ifc_ifp) & IFF_DRV_RUNNING))
|
|
|
|
#define CTX_LOCK_INIT(_sc, _name) mtx_init(&(_sc)->ifc_mtx, _name, "iflib ctx lock", MTX_DEF)
|
|
|
|
#define CTX_LOCK(ctx) mtx_lock(&(ctx)->ifc_mtx)
|
|
#define CTX_UNLOCK(ctx) mtx_unlock(&(ctx)->ifc_mtx)
|
|
#define CTX_LOCK_DESTROY(ctx) mtx_destroy(&(ctx)->ifc_mtx)
|
|
|
|
|
|
#define CALLOUT_LOCK(txq) mtx_lock(&txq->ift_mtx)
|
|
#define CALLOUT_UNLOCK(txq) mtx_unlock(&txq->ift_mtx)
|
|
|
|
|
|
/* Our boot-time initialization hook */
|
|
static int iflib_module_event_handler(module_t, int, void *);
|
|
|
|
static moduledata_t iflib_moduledata = {
|
|
"iflib",
|
|
iflib_module_event_handler,
|
|
NULL
|
|
};
|
|
|
|
DECLARE_MODULE(iflib, iflib_moduledata, SI_SUB_INIT_IF, SI_ORDER_ANY);
|
|
MODULE_VERSION(iflib, 1);
|
|
|
|
MODULE_DEPEND(iflib, pci, 1, 1, 1);
|
|
MODULE_DEPEND(iflib, ether, 1, 1, 1);
|
|
|
|
TASKQGROUP_DEFINE(if_io_tqg, mp_ncpus, 1);
|
|
TASKQGROUP_DEFINE(if_config_tqg, 1, 1);
|
|
|
|
#ifndef IFLIB_DEBUG_COUNTERS
|
|
#ifdef INVARIANTS
|
|
#define IFLIB_DEBUG_COUNTERS 1
|
|
#else
|
|
#define IFLIB_DEBUG_COUNTERS 0
|
|
#endif /* !INVARIANTS */
|
|
#endif
|
|
|
|
static SYSCTL_NODE(_net, OID_AUTO, iflib, CTLFLAG_RD, 0,
|
|
"iflib driver parameters");
|
|
|
|
/*
|
|
* XXX need to ensure that this can't accidentally cause the head to be moved backwards
|
|
*/
|
|
static int iflib_min_tx_latency = 0;
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, min_tx_latency, CTLFLAG_RW,
|
|
&iflib_min_tx_latency, 0, "minimize transmit latency at the possible expense of throughput");
|
|
static int iflib_no_tx_batch = 0;
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, no_tx_batch, CTLFLAG_RW,
|
|
&iflib_no_tx_batch, 0, "minimize transmit latency at the possible expense of throughput");
|
|
|
|
|
|
#if IFLIB_DEBUG_COUNTERS
|
|
|
|
static int iflib_tx_seen;
|
|
static int iflib_tx_sent;
|
|
static int iflib_tx_encap;
|
|
static int iflib_rx_allocs;
|
|
static int iflib_fl_refills;
|
|
static int iflib_fl_refills_large;
|
|
static int iflib_tx_frees;
|
|
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, tx_seen, CTLFLAG_RD,
|
|
&iflib_tx_seen, 0, "# tx mbufs seen");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, tx_sent, CTLFLAG_RD,
|
|
&iflib_tx_sent, 0, "# tx mbufs sent");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, tx_encap, CTLFLAG_RD,
|
|
&iflib_tx_encap, 0, "# tx mbufs encapped");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, tx_frees, CTLFLAG_RD,
|
|
&iflib_tx_frees, 0, "# tx frees");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, rx_allocs, CTLFLAG_RD,
|
|
&iflib_rx_allocs, 0, "# rx allocations");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, fl_refills, CTLFLAG_RD,
|
|
&iflib_fl_refills, 0, "# refills");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, fl_refills_large, CTLFLAG_RD,
|
|
&iflib_fl_refills_large, 0, "# large refills");
|
|
|
|
|
|
static int iflib_txq_drain_flushing;
|
|
static int iflib_txq_drain_oactive;
|
|
static int iflib_txq_drain_notready;
|
|
static int iflib_txq_drain_encapfail;
|
|
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, txq_drain_flushing, CTLFLAG_RD,
|
|
&iflib_txq_drain_flushing, 0, "# drain flushes");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, txq_drain_oactive, CTLFLAG_RD,
|
|
&iflib_txq_drain_oactive, 0, "# drain oactives");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, txq_drain_notready, CTLFLAG_RD,
|
|
&iflib_txq_drain_notready, 0, "# drain notready");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, txq_drain_encapfail, CTLFLAG_RD,
|
|
&iflib_txq_drain_encapfail, 0, "# drain encap fails");
|
|
|
|
|
|
static int iflib_encap_load_mbuf_fail;
|
|
static int iflib_encap_txq_avail_fail;
|
|
static int iflib_encap_txd_encap_fail;
|
|
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, encap_load_mbuf_fail, CTLFLAG_RD,
|
|
&iflib_encap_load_mbuf_fail, 0, "# busdma load failures");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, encap_txq_avail_fail, CTLFLAG_RD,
|
|
&iflib_encap_txq_avail_fail, 0, "# txq avail failures");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, encap_txd_encap_fail, CTLFLAG_RD,
|
|
&iflib_encap_txd_encap_fail, 0, "# driver encap failures");
|
|
|
|
static int iflib_task_fn_rxs;
|
|
static int iflib_rx_intr_enables;
|
|
static int iflib_fast_intrs;
|
|
static int iflib_intr_link;
|
|
static int iflib_intr_msix;
|
|
static int iflib_rx_unavail;
|
|
static int iflib_rx_ctx_inactive;
|
|
static int iflib_rx_zero_len;
|
|
static int iflib_rx_if_input;
|
|
static int iflib_rx_mbuf_null;
|
|
static int iflib_rxd_flush;
|
|
|
|
static int iflib_verbose_debug;
|
|
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, intr_link, CTLFLAG_RD,
|
|
&iflib_intr_link, 0, "# intr link calls");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, intr_msix, CTLFLAG_RD,
|
|
&iflib_intr_msix, 0, "# intr msix calls");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, task_fn_rx, CTLFLAG_RD,
|
|
&iflib_task_fn_rxs, 0, "# task_fn_rx calls");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, rx_intr_enables, CTLFLAG_RD,
|
|
&iflib_rx_intr_enables, 0, "# rx intr enables");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, fast_intrs, CTLFLAG_RD,
|
|
&iflib_fast_intrs, 0, "# fast_intr calls");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, rx_unavail, CTLFLAG_RD,
|
|
&iflib_rx_unavail, 0, "# times rxeof called with no available data");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, rx_ctx_inactive, CTLFLAG_RD,
|
|
&iflib_rx_ctx_inactive, 0, "# times rxeof called with inactive context");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, rx_zero_len, CTLFLAG_RD,
|
|
&iflib_rx_zero_len, 0, "# times rxeof saw zero len mbuf");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, rx_if_input, CTLFLAG_RD,
|
|
&iflib_rx_if_input, 0, "# times rxeof called if_input");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, rx_mbuf_null, CTLFLAG_RD,
|
|
&iflib_rx_mbuf_null, 0, "# times rxeof got null mbuf");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, rxd_flush, CTLFLAG_RD,
|
|
&iflib_rxd_flush, 0, "# times rxd_flush called");
|
|
SYSCTL_INT(_net_iflib, OID_AUTO, verbose_debug, CTLFLAG_RW,
|
|
&iflib_verbose_debug, 0, "enable verbose debugging");
|
|
|
|
#define DBG_COUNTER_INC(name) atomic_add_int(&(iflib_ ## name), 1)
|
|
static void
|
|
iflib_debug_reset(void)
|
|
{
|
|
iflib_tx_seen = iflib_tx_sent = iflib_tx_encap = iflib_rx_allocs =
|
|
iflib_fl_refills = iflib_fl_refills_large = iflib_tx_frees =
|
|
iflib_txq_drain_flushing = iflib_txq_drain_oactive =
|
|
iflib_txq_drain_notready = iflib_txq_drain_encapfail =
|
|
iflib_encap_load_mbuf_fail = iflib_encap_txq_avail_fail =
|
|
iflib_encap_txd_encap_fail = iflib_task_fn_rxs = iflib_rx_intr_enables =
|
|
iflib_fast_intrs = iflib_intr_link = iflib_intr_msix = iflib_rx_unavail =
|
|
iflib_rx_ctx_inactive = iflib_rx_zero_len = iflib_rx_if_input =
|
|
iflib_rx_mbuf_null = iflib_rxd_flush = 0;
|
|
}
|
|
|
|
#else
|
|
#define DBG_COUNTER_INC(name)
|
|
static void iflib_debug_reset(void) {}
|
|
#endif
|
|
|
|
|
|
|
|
#define IFLIB_DEBUG 0
|
|
|
|
static void iflib_tx_structures_free(if_ctx_t ctx);
|
|
static void iflib_rx_structures_free(if_ctx_t ctx);
|
|
static int iflib_queues_alloc(if_ctx_t ctx);
|
|
static int iflib_tx_credits_update(if_ctx_t ctx, iflib_txq_t txq);
|
|
static int iflib_rxd_avail(if_ctx_t ctx, iflib_rxq_t rxq, qidx_t cidx, qidx_t budget);
|
|
static int iflib_qset_structures_setup(if_ctx_t ctx);
|
|
static int iflib_msix_init(if_ctx_t ctx);
|
|
static int iflib_legacy_setup(if_ctx_t ctx, driver_filter_t filter, void *filterarg, int *rid, char *str);
|
|
static void iflib_txq_check_drain(iflib_txq_t txq, int budget);
|
|
static uint32_t iflib_txq_can_drain(struct ifmp_ring *);
|
|
static int iflib_register(if_ctx_t);
|
|
static void iflib_init_locked(if_ctx_t ctx);
|
|
static void iflib_add_device_sysctl_pre(if_ctx_t ctx);
|
|
static void iflib_add_device_sysctl_post(if_ctx_t ctx);
|
|
static void iflib_ifmp_purge(iflib_txq_t txq);
|
|
static void _iflib_pre_assert(if_softc_ctx_t scctx);
|
|
static void iflib_stop(if_ctx_t ctx);
|
|
static void iflib_if_init_locked(if_ctx_t ctx);
|
|
#ifndef __NO_STRICT_ALIGNMENT
|
|
static struct mbuf * iflib_fixup_rx(struct mbuf *m);
|
|
#endif
|
|
|
|
#ifdef DEV_NETMAP
|
|
#include <sys/selinfo.h>
|
|
#include <net/netmap.h>
|
|
#include <dev/netmap/netmap_kern.h>
|
|
|
|
MODULE_DEPEND(iflib, netmap, 1, 1, 1);
|
|
|
|
/*
|
|
* device-specific sysctl variables:
|
|
*
|
|
* iflib_crcstrip: 0: keep CRC in rx frames (default), 1: strip it.
|
|
* During regular operations the CRC is stripped, but on some
|
|
* hardware reception of frames not multiple of 64 is slower,
|
|
* so using crcstrip=0 helps in benchmarks.
|
|
*
|
|
* iflib_rx_miss, iflib_rx_miss_bufs:
|
|
* count packets that might be missed due to lost interrupts.
|
|
*/
|
|
SYSCTL_DECL(_dev_netmap);
|
|
/*
|
|
* The xl driver by default strips CRCs and we do not override it.
|
|
*/
|
|
|
|
int iflib_crcstrip = 1;
|
|
SYSCTL_INT(_dev_netmap, OID_AUTO, iflib_crcstrip,
|
|
CTLFLAG_RW, &iflib_crcstrip, 1, "strip CRC on rx frames");
|
|
|
|
int iflib_rx_miss, iflib_rx_miss_bufs;
|
|
SYSCTL_INT(_dev_netmap, OID_AUTO, iflib_rx_miss,
|
|
CTLFLAG_RW, &iflib_rx_miss, 0, "potentially missed rx intr");
|
|
SYSCTL_INT(_dev_netmap, OID_AUTO, iflib_rx_miss_bufs,
|
|
CTLFLAG_RW, &iflib_rx_miss_bufs, 0, "potentially missed rx intr bufs");
|
|
|
|
/*
|
|
* Register/unregister. We are already under netmap lock.
|
|
* Only called on the first register or the last unregister.
|
|
*/
|
|
static int
|
|
iflib_netmap_register(struct netmap_adapter *na, int onoff)
|
|
{
|
|
struct ifnet *ifp = na->ifp;
|
|
if_ctx_t ctx = ifp->if_softc;
|
|
int status;
|
|
|
|
CTX_LOCK(ctx);
|
|
IFDI_INTR_DISABLE(ctx);
|
|
|
|
/* Tell the stack that the interface is no longer active */
|
|
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
|
|
|
|
if (!CTX_IS_VF(ctx))
|
|
IFDI_CRCSTRIP_SET(ctx, onoff, iflib_crcstrip);
|
|
|
|
/* enable or disable flags and callbacks in na and ifp */
|
|
if (onoff) {
|
|
nm_set_native_flags(na);
|
|
} else {
|
|
nm_clear_native_flags(na);
|
|
}
|
|
iflib_stop(ctx);
|
|
iflib_init_locked(ctx);
|
|
IFDI_CRCSTRIP_SET(ctx, onoff, iflib_crcstrip); // XXX why twice ?
|
|
status = ifp->if_drv_flags & IFF_DRV_RUNNING ? 0 : 1;
|
|
if (status)
|
|
nm_clear_native_flags(na);
|
|
CTX_UNLOCK(ctx);
|
|
return (status);
|
|
}
|
|
|
|
/*
|
|
* Reconcile kernel and user view of the transmit ring.
|
|
*
|
|
* All information is in the kring.
|
|
* Userspace wants to send packets up to the one before kring->rhead,
|
|
* kernel knows kring->nr_hwcur is the first unsent packet.
|
|
*
|
|
* Here we push packets out (as many as possible), and possibly
|
|
* reclaim buffers from previously completed transmission.
|
|
*
|
|
* The caller (netmap) guarantees that there is only one instance
|
|
* running at any time. Any interference with other driver
|
|
* methods should be handled by the individual drivers.
|
|
*/
|
|
static int
|
|
iflib_netmap_txsync(struct netmap_kring *kring, int flags)
|
|
{
|
|
struct netmap_adapter *na = kring->na;
|
|
struct ifnet *ifp = na->ifp;
|
|
struct netmap_ring *ring = kring->ring;
|
|
u_int nm_i; /* index into the netmap ring */
|
|
u_int nic_i; /* index into the NIC ring */
|
|
u_int n;
|
|
u_int const lim = kring->nkr_num_slots - 1;
|
|
u_int const head = kring->rhead;
|
|
struct if_pkt_info pi;
|
|
|
|
/*
|
|
* interrupts on every tx packet are expensive so request
|
|
* them every half ring, or where NS_REPORT is set
|
|
*/
|
|
u_int report_frequency = kring->nkr_num_slots >> 1;
|
|
/* device-specific */
|
|
if_ctx_t ctx = ifp->if_softc;
|
|
iflib_txq_t txq = &ctx->ifc_txqs[kring->ring_id];
|
|
|
|
if (txq->ift_sds.ifsd_map)
|
|
bus_dmamap_sync(txq->ift_desc_tag, txq->ift_ifdi->idi_map,
|
|
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
|
|
|
|
|
|
/*
|
|
* First part: process new packets to send.
|
|
* nm_i is the current index in the netmap ring,
|
|
* nic_i is the corresponding index in the NIC ring.
|
|
*
|
|
* If we have packets to send (nm_i != head)
|
|
* iterate over the netmap ring, fetch length and update
|
|
* the corresponding slot in the NIC ring. Some drivers also
|
|
* need to update the buffer's physical address in the NIC slot
|
|
* even NS_BUF_CHANGED is not set (PNMB computes the addresses).
|
|
*
|
|
* The netmap_reload_map() calls is especially expensive,
|
|
* even when (as in this case) the tag is 0, so do only
|
|
* when the buffer has actually changed.
|
|
*
|
|
* If possible do not set the report/intr bit on all slots,
|
|
* but only a few times per ring or when NS_REPORT is set.
|
|
*
|
|
* Finally, on 10G and faster drivers, it might be useful
|
|
* to prefetch the next slot and txr entry.
|
|
*/
|
|
|
|
nm_i = kring->nr_hwcur;
|
|
pkt_info_zero(&pi);
|
|
pi.ipi_segs = txq->ift_segs;
|
|
pi.ipi_qsidx = kring->ring_id;
|
|
if (nm_i != head) { /* we have new packets to send */
|
|
nic_i = netmap_idx_k2n(kring, nm_i);
|
|
|
|
__builtin_prefetch(&ring->slot[nm_i]);
|
|
__builtin_prefetch(&txq->ift_sds.ifsd_m[nic_i]);
|
|
if (txq->ift_sds.ifsd_map)
|
|
__builtin_prefetch(&txq->ift_sds.ifsd_map[nic_i]);
|
|
|
|
for (n = 0; nm_i != head; n++) {
|
|
struct netmap_slot *slot = &ring->slot[nm_i];
|
|
u_int len = slot->len;
|
|
uint64_t paddr;
|
|
void *addr = PNMB(na, slot, &paddr);
|
|
int flags = (slot->flags & NS_REPORT ||
|
|
nic_i == 0 || nic_i == report_frequency) ?
|
|
IPI_TX_INTR : 0;
|
|
|
|
/* device-specific */
|
|
pi.ipi_len = len;
|
|
pi.ipi_segs[0].ds_addr = paddr;
|
|
pi.ipi_segs[0].ds_len = len;
|
|
pi.ipi_nsegs = 1;
|
|
pi.ipi_ndescs = 0;
|
|
pi.ipi_pidx = nic_i;
|
|
pi.ipi_flags = flags;
|
|
|
|
/* Fill the slot in the NIC ring. */
|
|
ctx->isc_txd_encap(ctx->ifc_softc, &pi);
|
|
|
|
/* prefetch for next round */
|
|
__builtin_prefetch(&ring->slot[nm_i + 1]);
|
|
__builtin_prefetch(&txq->ift_sds.ifsd_m[nic_i + 1]);
|
|
if (txq->ift_sds.ifsd_map) {
|
|
__builtin_prefetch(&txq->ift_sds.ifsd_map[nic_i + 1]);
|
|
|
|
NM_CHECK_ADDR_LEN(na, addr, len);
|
|
|
|
if (slot->flags & NS_BUF_CHANGED) {
|
|
/* buffer has changed, reload map */
|
|
netmap_reload_map(na, txq->ift_desc_tag, txq->ift_sds.ifsd_map[nic_i], addr);
|
|
}
|
|
/* make sure changes to the buffer are synced */
|
|
bus_dmamap_sync(txq->ift_ifdi->idi_tag, txq->ift_sds.ifsd_map[nic_i],
|
|
BUS_DMASYNC_PREWRITE);
|
|
}
|
|
slot->flags &= ~(NS_REPORT | NS_BUF_CHANGED);
|
|
nm_i = nm_next(nm_i, lim);
|
|
nic_i = nm_next(nic_i, lim);
|
|
}
|
|
kring->nr_hwcur = head;
|
|
|
|
/* synchronize the NIC ring */
|
|
if (txq->ift_sds.ifsd_map)
|
|
bus_dmamap_sync(txq->ift_desc_tag, txq->ift_ifdi->idi_map,
|
|
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
|
|
|
|
/* (re)start the tx unit up to slot nic_i (excluded) */
|
|
ctx->isc_txd_flush(ctx->ifc_softc, txq->ift_id, nic_i);
|
|
}
|
|
|
|
/*
|
|
* Second part: reclaim buffers for completed transmissions.
|
|
*/
|
|
if (iflib_tx_credits_update(ctx, txq)) {
|
|
/* some tx completed, increment avail */
|
|
nic_i = txq->ift_cidx_processed;
|
|
kring->nr_hwtail = nm_prev(netmap_idx_n2k(kring, nic_i), lim);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Reconcile kernel and user view of the receive ring.
|
|
* Same as for the txsync, this routine must be efficient.
|
|
* The caller guarantees a single invocations, but races against
|
|
* the rest of the driver should be handled here.
|
|
*
|
|
* On call, kring->rhead is the first packet that userspace wants
|
|
* to keep, and kring->rcur is the wakeup point.
|
|
* The kernel has previously reported packets up to kring->rtail.
|
|
*
|
|
* If (flags & NAF_FORCE_READ) also check for incoming packets irrespective
|
|
* of whether or not we received an interrupt.
|
|
*/
|
|
static int
|
|
iflib_netmap_rxsync(struct netmap_kring *kring, int flags)
|
|
{
|
|
struct netmap_adapter *na = kring->na;
|
|
struct netmap_ring *ring = kring->ring;
|
|
uint32_t nm_i; /* index into the netmap ring */
|
|
uint32_t nic_i, nic_i_start; /* index into the NIC ring */
|
|
u_int i, n;
|
|
u_int const lim = kring->nkr_num_slots - 1;
|
|
u_int const head = kring->rhead;
|
|
int force_update = (flags & NAF_FORCE_READ) || kring->nr_kflags & NKR_PENDINTR;
|
|
struct if_rxd_info ri;
|
|
struct if_rxd_update iru;
|
|
|
|
struct ifnet *ifp = na->ifp;
|
|
if_ctx_t ctx = ifp->if_softc;
|
|
iflib_rxq_t rxq = &ctx->ifc_rxqs[kring->ring_id];
|
|
iflib_fl_t fl = rxq->ifr_fl;
|
|
if (head > lim)
|
|
return netmap_ring_reinit(kring);
|
|
|
|
/* XXX check sync modes */
|
|
for (i = 0, fl = rxq->ifr_fl; i < rxq->ifr_nfl; i++, fl++) {
|
|
if (fl->ifl_sds.ifsd_map == NULL)
|
|
continue;
|
|
bus_dmamap_sync(rxq->ifr_fl[i].ifl_desc_tag, fl->ifl_ifdi->idi_map,
|
|
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
|
|
}
|
|
/*
|
|
* First part: import newly received packets.
|
|
*
|
|
* nm_i is the index of the next free slot in the netmap ring,
|
|
* nic_i is the index of the next received packet in the NIC ring,
|
|
* and they may differ in case if_init() has been called while
|
|
* in netmap mode. For the receive ring we have
|
|
*
|
|
* nic_i = rxr->next_check;
|
|
* nm_i = kring->nr_hwtail (previous)
|
|
* and
|
|
* nm_i == (nic_i + kring->nkr_hwofs) % ring_size
|
|
*
|
|
* rxr->next_check is set to 0 on a ring reinit
|
|
*/
|
|
if (netmap_no_pendintr || force_update) {
|
|
int crclen = iflib_crcstrip ? 0 : 4;
|
|
int error, avail;
|
|
uint16_t slot_flags = kring->nkr_slot_flags;
|
|
|
|
for (fl = rxq->ifr_fl, i = 0; i < rxq->ifr_nfl; i++, fl++) {
|
|
nic_i = fl->ifl_cidx;
|
|
nm_i = netmap_idx_n2k(kring, nic_i);
|
|
avail = iflib_rxd_avail(ctx, rxq, nic_i, USHRT_MAX);
|
|
for (n = 0; avail > 0; n++, avail--) {
|
|
rxd_info_zero(&ri);
|
|
ri.iri_frags = rxq->ifr_frags;
|
|
ri.iri_qsidx = kring->ring_id;
|
|
ri.iri_ifp = ctx->ifc_ifp;
|
|
ri.iri_cidx = nic_i;
|
|
|
|
error = ctx->isc_rxd_pkt_get(ctx->ifc_softc, &ri);
|
|
ring->slot[nm_i].len = error ? 0 : ri.iri_len - crclen;
|
|
ring->slot[nm_i].flags = slot_flags;
|
|
if (fl->ifl_sds.ifsd_map)
|
|
bus_dmamap_sync(fl->ifl_ifdi->idi_tag,
|
|
fl->ifl_sds.ifsd_map[nic_i], BUS_DMASYNC_POSTREAD);
|
|
nm_i = nm_next(nm_i, lim);
|
|
nic_i = nm_next(nic_i, lim);
|
|
}
|
|
if (n) { /* update the state variables */
|
|
if (netmap_no_pendintr && !force_update) {
|
|
/* diagnostics */
|
|
iflib_rx_miss ++;
|
|
iflib_rx_miss_bufs += n;
|
|
}
|
|
fl->ifl_cidx = nic_i;
|
|
kring->nr_hwtail = nm_i;
|
|
}
|
|
kring->nr_kflags &= ~NKR_PENDINTR;
|
|
}
|
|
}
|
|
/*
|
|
* Second part: skip past packets that userspace has released.
|
|
* (kring->nr_hwcur to head excluded),
|
|
* and make the buffers available for reception.
|
|
* As usual nm_i is the index in the netmap ring,
|
|
* nic_i is the index in the NIC ring, and
|
|
* nm_i == (nic_i + kring->nkr_hwofs) % ring_size
|
|
*/
|
|
/* XXX not sure how this will work with multiple free lists */
|
|
nm_i = kring->nr_hwcur;
|
|
if (nm_i == head)
|
|
return (0);
|
|
|
|
iru.iru_paddrs = fl->ifl_bus_addrs;
|
|
iru.iru_vaddrs = &fl->ifl_vm_addrs[0];
|
|
iru.iru_idxs = fl->ifl_rxd_idxs;
|
|
iru.iru_qsidx = rxq->ifr_id;
|
|
iru.iru_buf_size = fl->ifl_buf_size;
|
|
iru.iru_flidx = fl->ifl_id;
|
|
nic_i_start = nic_i = netmap_idx_k2n(kring, nm_i);
|
|
for (i = 0; nm_i != head; i++) {
|
|
struct netmap_slot *slot = &ring->slot[nm_i];
|
|
void *addr = PNMB(na, slot, &fl->ifl_bus_addrs[i]);
|
|
|
|
if (addr == NETMAP_BUF_BASE(na)) /* bad buf */
|
|
goto ring_reset;
|
|
|
|
fl->ifl_vm_addrs[i] = addr;
|
|
if (fl->ifl_sds.ifsd_map && (slot->flags & NS_BUF_CHANGED)) {
|
|
/* buffer has changed, reload map */
|
|
netmap_reload_map(na, fl->ifl_ifdi->idi_tag, fl->ifl_sds.ifsd_map[nic_i], addr);
|
|
}
|
|
slot->flags &= ~NS_BUF_CHANGED;
|
|
|
|
nm_i = nm_next(nm_i, lim);
|
|
fl->ifl_rxd_idxs[i] = nic_i = nm_next(nic_i, lim);
|
|
if (nm_i != head && i < IFLIB_MAX_RX_REFRESH)
|
|
continue;
|
|
|
|
iru.iru_pidx = nic_i_start;
|
|
iru.iru_count = i;
|
|
i = 0;
|
|
ctx->isc_rxd_refill(ctx->ifc_softc, &iru);
|
|
if (fl->ifl_sds.ifsd_map == NULL) {
|
|
nic_i_start = nic_i;
|
|
continue;
|
|
}
|
|
nic_i = nic_i_start;
|
|
for (n = 0; n < iru.iru_count; n++) {
|
|
bus_dmamap_sync(fl->ifl_ifdi->idi_tag, fl->ifl_sds.ifsd_map[nic_i],
|
|
BUS_DMASYNC_PREREAD);
|
|
nic_i = nm_next(nic_i, lim);
|
|
}
|
|
nic_i_start = nic_i;
|
|
}
|
|
kring->nr_hwcur = head;
|
|
|
|
if (fl->ifl_sds.ifsd_map)
|
|
bus_dmamap_sync(fl->ifl_ifdi->idi_tag, fl->ifl_ifdi->idi_map,
|
|
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
|
|
/*
|
|
* IMPORTANT: we must leave one free slot in the ring,
|
|
* so move nic_i back by one unit
|
|
*/
|
|
nic_i = nm_prev(nic_i, lim);
|
|
ctx->isc_rxd_flush(ctx->ifc_softc, rxq->ifr_id, fl->ifl_id, nic_i);
|
|
return 0;
|
|
|
|
ring_reset:
|
|
return netmap_ring_reinit(kring);
|
|
}
|
|
|
|
static void
|
|
iflib_netmap_intr(struct netmap_adapter *na, int onoff)
|
|
{
|
|
struct ifnet *ifp = na->ifp;
|
|
if_ctx_t ctx = ifp->if_softc;
|
|
|
|
CTX_LOCK(ctx);
|
|
if (onoff) {
|
|
IFDI_INTR_ENABLE(ctx);
|
|
} else {
|
|
IFDI_INTR_DISABLE(ctx);
|
|
}
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
|
|
|
|
static int
|
|
iflib_netmap_attach(if_ctx_t ctx)
|
|
{
|
|
struct netmap_adapter na;
|
|
if_softc_ctx_t scctx = &ctx->ifc_softc_ctx;
|
|
|
|
bzero(&na, sizeof(na));
|
|
|
|
na.ifp = ctx->ifc_ifp;
|
|
na.na_flags = NAF_BDG_MAYSLEEP;
|
|
MPASS(ctx->ifc_softc_ctx.isc_ntxqsets);
|
|
MPASS(ctx->ifc_softc_ctx.isc_nrxqsets);
|
|
|
|
na.num_tx_desc = scctx->isc_ntxd[0];
|
|
na.num_rx_desc = scctx->isc_nrxd[0];
|
|
na.nm_txsync = iflib_netmap_txsync;
|
|
na.nm_rxsync = iflib_netmap_rxsync;
|
|
na.nm_register = iflib_netmap_register;
|
|
na.nm_intr = iflib_netmap_intr;
|
|
na.num_tx_rings = ctx->ifc_softc_ctx.isc_ntxqsets;
|
|
na.num_rx_rings = ctx->ifc_softc_ctx.isc_nrxqsets;
|
|
return (netmap_attach(&na));
|
|
}
|
|
|
|
static void
|
|
iflib_netmap_txq_init(if_ctx_t ctx, iflib_txq_t txq)
|
|
{
|
|
struct netmap_adapter *na = NA(ctx->ifc_ifp);
|
|
struct netmap_slot *slot;
|
|
|
|
slot = netmap_reset(na, NR_TX, txq->ift_id, 0);
|
|
if (slot == NULL)
|
|
return;
|
|
if (txq->ift_sds.ifsd_map == NULL)
|
|
return;
|
|
|
|
for (int i = 0; i < ctx->ifc_softc_ctx.isc_ntxd[0]; i++) {
|
|
|
|
/*
|
|
* In netmap mode, set the map for the packet buffer.
|
|
* NOTE: Some drivers (not this one) also need to set
|
|
* the physical buffer address in the NIC ring.
|
|
* netmap_idx_n2k() maps a nic index, i, into the corresponding
|
|
* netmap slot index, si
|
|
*/
|
|
int si = netmap_idx_n2k(&na->tx_rings[txq->ift_id], i);
|
|
netmap_load_map(na, txq->ift_desc_tag, txq->ift_sds.ifsd_map[i], NMB(na, slot + si));
|
|
}
|
|
}
|
|
static void
|
|
iflib_netmap_rxq_init(if_ctx_t ctx, iflib_rxq_t rxq)
|
|
{
|
|
struct netmap_adapter *na = NA(ctx->ifc_ifp);
|
|
struct netmap_slot *slot;
|
|
struct if_rxd_update iru;
|
|
iflib_fl_t fl;
|
|
bus_dmamap_t *map;
|
|
int nrxd;
|
|
uint32_t i, j, pidx_start;
|
|
|
|
slot = netmap_reset(na, NR_RX, rxq->ifr_id, 0);
|
|
if (slot == NULL)
|
|
return;
|
|
fl = &rxq->ifr_fl[0];
|
|
map = fl->ifl_sds.ifsd_map;
|
|
nrxd = ctx->ifc_softc_ctx.isc_nrxd[0];
|
|
iru.iru_paddrs = fl->ifl_bus_addrs;
|
|
iru.iru_vaddrs = &fl->ifl_vm_addrs[0];
|
|
iru.iru_idxs = fl->ifl_rxd_idxs;
|
|
iru.iru_qsidx = rxq->ifr_id;
|
|
iru.iru_buf_size = rxq->ifr_fl[0].ifl_buf_size;
|
|
iru.iru_flidx = 0;
|
|
|
|
for (pidx_start = i = j = 0; i < nrxd; i++, j++) {
|
|
int sj = netmap_idx_n2k(&na->rx_rings[rxq->ifr_id], i);
|
|
void *addr;
|
|
|
|
fl->ifl_rxd_idxs[j] = i;
|
|
addr = fl->ifl_vm_addrs[j] = PNMB(na, slot + sj, &fl->ifl_bus_addrs[j]);
|
|
if (map) {
|
|
netmap_load_map(na, rxq->ifr_fl[0].ifl_ifdi->idi_tag, *map, addr);
|
|
map++;
|
|
}
|
|
|
|
if (j < IFLIB_MAX_RX_REFRESH && i < nrxd - 1)
|
|
continue;
|
|
|
|
iru.iru_pidx = pidx_start;
|
|
pidx_start = i;
|
|
iru.iru_count = j;
|
|
j = 0;
|
|
MPASS(pidx_start + j <= nrxd);
|
|
/* Update descriptors and the cached value */
|
|
ctx->isc_rxd_refill(ctx->ifc_softc, &iru);
|
|
}
|
|
/* preserve queue */
|
|
if (ctx->ifc_ifp->if_capenable & IFCAP_NETMAP) {
|
|
struct netmap_kring *kring = &na->rx_rings[rxq->ifr_id];
|
|
int t = na->num_rx_desc - 1 - nm_kr_rxspace(kring);
|
|
ctx->isc_rxd_flush(ctx->ifc_softc, rxq->ifr_id, 0 /* fl_id */, t);
|
|
} else
|
|
ctx->isc_rxd_flush(ctx->ifc_softc, rxq->ifr_id, 0 /* fl_id */, nrxd-1);
|
|
}
|
|
|
|
#define iflib_netmap_detach(ifp) netmap_detach(ifp)
|
|
|
|
#else
|
|
#define iflib_netmap_txq_init(ctx, txq)
|
|
#define iflib_netmap_rxq_init(ctx, rxq)
|
|
#define iflib_netmap_detach(ifp)
|
|
|
|
#define iflib_netmap_attach(ctx) (0)
|
|
#define netmap_rx_irq(ifp, qid, budget) (0)
|
|
#define netmap_tx_irq(ifp, qid) do {} while (0)
|
|
|
|
#endif
|
|
|
|
#if defined(__i386__) || defined(__amd64__)
|
|
static __inline void
|
|
prefetch(void *x)
|
|
{
|
|
__asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x));
|
|
}
|
|
#else
|
|
#define prefetch(x)
|
|
#endif
|
|
|
|
static void
|
|
_iflib_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
|
|
{
|
|
if (err)
|
|
return;
|
|
*(bus_addr_t *) arg = segs[0].ds_addr;
|
|
}
|
|
|
|
int
|
|
iflib_dma_alloc(if_ctx_t ctx, int size, iflib_dma_info_t dma, int mapflags)
|
|
{
|
|
int err;
|
|
if_shared_ctx_t sctx = ctx->ifc_sctx;
|
|
device_t dev = ctx->ifc_dev;
|
|
|
|
KASSERT(sctx->isc_q_align != 0, ("alignment value not initialized"));
|
|
|
|
err = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */
|
|
sctx->isc_q_align, 0, /* alignment, bounds */
|
|
BUS_SPACE_MAXADDR, /* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
size, /* maxsize */
|
|
1, /* nsegments */
|
|
size, /* maxsegsize */
|
|
BUS_DMA_ALLOCNOW, /* flags */
|
|
NULL, /* lockfunc */
|
|
NULL, /* lockarg */
|
|
&dma->idi_tag);
|
|
if (err) {
|
|
device_printf(dev,
|
|
"%s: bus_dma_tag_create failed: %d\n",
|
|
__func__, err);
|
|
goto fail_0;
|
|
}
|
|
|
|
err = bus_dmamem_alloc(dma->idi_tag, (void**) &dma->idi_vaddr,
|
|
BUS_DMA_NOWAIT | BUS_DMA_COHERENT | BUS_DMA_ZERO, &dma->idi_map);
|
|
if (err) {
|
|
device_printf(dev,
|
|
"%s: bus_dmamem_alloc(%ju) failed: %d\n",
|
|
__func__, (uintmax_t)size, err);
|
|
goto fail_1;
|
|
}
|
|
|
|
dma->idi_paddr = IF_BAD_DMA;
|
|
err = bus_dmamap_load(dma->idi_tag, dma->idi_map, dma->idi_vaddr,
|
|
size, _iflib_dmamap_cb, &dma->idi_paddr, mapflags | BUS_DMA_NOWAIT);
|
|
if (err || dma->idi_paddr == IF_BAD_DMA) {
|
|
device_printf(dev,
|
|
"%s: bus_dmamap_load failed: %d\n",
|
|
__func__, err);
|
|
goto fail_2;
|
|
}
|
|
|
|
dma->idi_size = size;
|
|
return (0);
|
|
|
|
fail_2:
|
|
bus_dmamem_free(dma->idi_tag, dma->idi_vaddr, dma->idi_map);
|
|
fail_1:
|
|
bus_dma_tag_destroy(dma->idi_tag);
|
|
fail_0:
|
|
dma->idi_tag = NULL;
|
|
|
|
return (err);
|
|
}
|
|
|
|
int
|
|
iflib_dma_alloc_multi(if_ctx_t ctx, int *sizes, iflib_dma_info_t *dmalist, int mapflags, int count)
|
|
{
|
|
int i, err;
|
|
iflib_dma_info_t *dmaiter;
|
|
|
|
dmaiter = dmalist;
|
|
for (i = 0; i < count; i++, dmaiter++) {
|
|
if ((err = iflib_dma_alloc(ctx, sizes[i], *dmaiter, mapflags)) != 0)
|
|
break;
|
|
}
|
|
if (err)
|
|
iflib_dma_free_multi(dmalist, i);
|
|
return (err);
|
|
}
|
|
|
|
void
|
|
iflib_dma_free(iflib_dma_info_t dma)
|
|
{
|
|
if (dma->idi_tag == NULL)
|
|
return;
|
|
if (dma->idi_paddr != IF_BAD_DMA) {
|
|
bus_dmamap_sync(dma->idi_tag, dma->idi_map,
|
|
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(dma->idi_tag, dma->idi_map);
|
|
dma->idi_paddr = IF_BAD_DMA;
|
|
}
|
|
if (dma->idi_vaddr != NULL) {
|
|
bus_dmamem_free(dma->idi_tag, dma->idi_vaddr, dma->idi_map);
|
|
dma->idi_vaddr = NULL;
|
|
}
|
|
bus_dma_tag_destroy(dma->idi_tag);
|
|
dma->idi_tag = NULL;
|
|
}
|
|
|
|
void
|
|
iflib_dma_free_multi(iflib_dma_info_t *dmalist, int count)
|
|
{
|
|
int i;
|
|
iflib_dma_info_t *dmaiter = dmalist;
|
|
|
|
for (i = 0; i < count; i++, dmaiter++)
|
|
iflib_dma_free(*dmaiter);
|
|
}
|
|
|
|
#ifdef EARLY_AP_STARTUP
|
|
static const int iflib_started = 1;
|
|
#else
|
|
/*
|
|
* We used to abuse the smp_started flag to decide if the queues have been
|
|
* fully initialized (by late taskqgroup_adjust() calls in a SYSINIT()).
|
|
* That gave bad races, since the SYSINIT() runs strictly after smp_started
|
|
* is set. Run a SYSINIT() strictly after that to just set a usable
|
|
* completion flag.
|
|
*/
|
|
|
|
static int iflib_started;
|
|
|
|
static void
|
|
iflib_record_started(void *arg)
|
|
{
|
|
iflib_started = 1;
|
|
}
|
|
|
|
SYSINIT(iflib_record_started, SI_SUB_SMP + 1, SI_ORDER_FIRST,
|
|
iflib_record_started, NULL);
|
|
#endif
|
|
|
|
static int
|
|
iflib_fast_intr(void *arg)
|
|
{
|
|
iflib_filter_info_t info = arg;
|
|
struct grouptask *gtask = info->ifi_task;
|
|
if (!iflib_started)
|
|
return (FILTER_HANDLED);
|
|
|
|
DBG_COUNTER_INC(fast_intrs);
|
|
if (info->ifi_filter != NULL && info->ifi_filter(info->ifi_filter_arg) == FILTER_HANDLED)
|
|
return (FILTER_HANDLED);
|
|
|
|
GROUPTASK_ENQUEUE(gtask);
|
|
return (FILTER_HANDLED);
|
|
}
|
|
|
|
static int
|
|
iflib_fast_intr_rxtx(void *arg)
|
|
{
|
|
iflib_filter_info_t info = arg;
|
|
struct grouptask *gtask = info->ifi_task;
|
|
iflib_rxq_t rxq = (iflib_rxq_t)info->ifi_ctx;
|
|
if_ctx_t ctx;
|
|
int i, cidx;
|
|
|
|
if (!iflib_started)
|
|
return (FILTER_HANDLED);
|
|
|
|
DBG_COUNTER_INC(fast_intrs);
|
|
if (info->ifi_filter != NULL && info->ifi_filter(info->ifi_filter_arg) == FILTER_HANDLED)
|
|
return (FILTER_HANDLED);
|
|
|
|
for (i = 0; i < rxq->ifr_ntxqirq; i++) {
|
|
qidx_t txqid = rxq->ifr_txqid[i];
|
|
|
|
ctx = rxq->ifr_ctx;
|
|
|
|
if (!ctx->isc_txd_credits_update(ctx->ifc_softc, txqid, false)) {
|
|
IFDI_TX_QUEUE_INTR_ENABLE(ctx, txqid);
|
|
continue;
|
|
}
|
|
GROUPTASK_ENQUEUE(&ctx->ifc_txqs[txqid].ift_task);
|
|
}
|
|
if (ctx->ifc_sctx->isc_flags & IFLIB_HAS_RXCQ)
|
|
cidx = rxq->ifr_cq_cidx;
|
|
else
|
|
cidx = rxq->ifr_fl[0].ifl_cidx;
|
|
if (iflib_rxd_avail(ctx, rxq, cidx, 1))
|
|
GROUPTASK_ENQUEUE(gtask);
|
|
else
|
|
IFDI_RX_QUEUE_INTR_ENABLE(ctx, rxq->ifr_id);
|
|
return (FILTER_HANDLED);
|
|
}
|
|
|
|
|
|
static int
|
|
iflib_fast_intr_ctx(void *arg)
|
|
{
|
|
iflib_filter_info_t info = arg;
|
|
struct grouptask *gtask = info->ifi_task;
|
|
|
|
if (!iflib_started)
|
|
return (FILTER_HANDLED);
|
|
|
|
DBG_COUNTER_INC(fast_intrs);
|
|
if (info->ifi_filter != NULL && info->ifi_filter(info->ifi_filter_arg) == FILTER_HANDLED)
|
|
return (FILTER_HANDLED);
|
|
|
|
GROUPTASK_ENQUEUE(gtask);
|
|
return (FILTER_HANDLED);
|
|
}
|
|
|
|
static int
|
|
_iflib_irq_alloc(if_ctx_t ctx, if_irq_t irq, int rid,
|
|
driver_filter_t filter, driver_intr_t handler, void *arg,
|
|
char *name)
|
|
{
|
|
int rc, flags;
|
|
struct resource *res;
|
|
void *tag = NULL;
|
|
device_t dev = ctx->ifc_dev;
|
|
|
|
flags = RF_ACTIVE;
|
|
if (ctx->ifc_flags & IFC_LEGACY)
|
|
flags |= RF_SHAREABLE;
|
|
MPASS(rid < 512);
|
|
irq->ii_rid = rid;
|
|
res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &irq->ii_rid, flags);
|
|
if (res == NULL) {
|
|
device_printf(dev,
|
|
"failed to allocate IRQ for rid %d, name %s.\n", rid, name);
|
|
return (ENOMEM);
|
|
}
|
|
irq->ii_res = res;
|
|
KASSERT(filter == NULL || handler == NULL, ("filter and handler can't both be non-NULL"));
|
|
rc = bus_setup_intr(dev, res, INTR_MPSAFE | INTR_TYPE_NET,
|
|
filter, handler, arg, &tag);
|
|
if (rc != 0) {
|
|
device_printf(dev,
|
|
"failed to setup interrupt for rid %d, name %s: %d\n",
|
|
rid, name ? name : "unknown", rc);
|
|
return (rc);
|
|
} else if (name)
|
|
bus_describe_intr(dev, res, tag, "%s", name);
|
|
|
|
irq->ii_tag = tag;
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Allocate memory for tx_buffer structures. The tx_buffer stores all
|
|
* the information needed to transmit a packet on the wire. This is
|
|
* called only once at attach, setup is done every reset.
|
|
*
|
|
**********************************************************************/
|
|
|
|
static int
|
|
iflib_txsd_alloc(iflib_txq_t txq)
|
|
{
|
|
if_ctx_t ctx = txq->ift_ctx;
|
|
if_shared_ctx_t sctx = ctx->ifc_sctx;
|
|
if_softc_ctx_t scctx = &ctx->ifc_softc_ctx;
|
|
device_t dev = ctx->ifc_dev;
|
|
int err, nsegments, ntsosegments;
|
|
|
|
nsegments = scctx->isc_tx_nsegments;
|
|
ntsosegments = scctx->isc_tx_tso_segments_max;
|
|
MPASS(scctx->isc_ntxd[0] > 0);
|
|
MPASS(scctx->isc_ntxd[txq->ift_br_offset] > 0);
|
|
MPASS(nsegments > 0);
|
|
MPASS(ntsosegments > 0);
|
|
/*
|
|
* Setup DMA descriptor areas.
|
|
*/
|
|
if ((err = bus_dma_tag_create(bus_get_dma_tag(dev),
|
|
1, 0, /* alignment, bounds */
|
|
BUS_SPACE_MAXADDR, /* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
sctx->isc_tx_maxsize, /* maxsize */
|
|
nsegments, /* nsegments */
|
|
sctx->isc_tx_maxsegsize, /* maxsegsize */
|
|
0, /* flags */
|
|
NULL, /* lockfunc */
|
|
NULL, /* lockfuncarg */
|
|
&txq->ift_desc_tag))) {
|
|
device_printf(dev,"Unable to allocate TX DMA tag: %d\n", err);
|
|
device_printf(dev,"maxsize: %zd nsegments: %d maxsegsize: %zd\n",
|
|
sctx->isc_tx_maxsize, nsegments, sctx->isc_tx_maxsegsize);
|
|
goto fail;
|
|
}
|
|
if ((err = bus_dma_tag_create(bus_get_dma_tag(dev),
|
|
1, 0, /* alignment, bounds */
|
|
BUS_SPACE_MAXADDR, /* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
scctx->isc_tx_tso_size_max, /* maxsize */
|
|
ntsosegments, /* nsegments */
|
|
scctx->isc_tx_tso_segsize_max, /* maxsegsize */
|
|
0, /* flags */
|
|
NULL, /* lockfunc */
|
|
NULL, /* lockfuncarg */
|
|
&txq->ift_tso_desc_tag))) {
|
|
device_printf(dev,"Unable to allocate TX TSO DMA tag: %d\n", err);
|
|
|
|
goto fail;
|
|
}
|
|
if (!(txq->ift_sds.ifsd_flags =
|
|
(uint8_t *) malloc(sizeof(uint8_t) *
|
|
scctx->isc_ntxd[txq->ift_br_offset], M_IFLIB, M_NOWAIT | M_ZERO))) {
|
|
device_printf(dev, "Unable to allocate tx_buffer memory\n");
|
|
err = ENOMEM;
|
|
goto fail;
|
|
}
|
|
if (!(txq->ift_sds.ifsd_m =
|
|
(struct mbuf **) malloc(sizeof(struct mbuf *) *
|
|
scctx->isc_ntxd[txq->ift_br_offset], M_IFLIB, M_NOWAIT | M_ZERO))) {
|
|
device_printf(dev, "Unable to allocate tx_buffer memory\n");
|
|
err = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
/* Create the descriptor buffer dma maps */
|
|
#if defined(ACPI_DMAR) || (! (defined(__i386__) || defined(__amd64__)))
|
|
if ((ctx->ifc_flags & IFC_DMAR) == 0)
|
|
return (0);
|
|
|
|
if (!(txq->ift_sds.ifsd_map =
|
|
(bus_dmamap_t *) malloc(sizeof(bus_dmamap_t) * scctx->isc_ntxd[txq->ift_br_offset], M_IFLIB, M_NOWAIT | M_ZERO))) {
|
|
device_printf(dev, "Unable to allocate tx_buffer map memory\n");
|
|
err = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
for (int i = 0; i < scctx->isc_ntxd[txq->ift_br_offset]; i++) {
|
|
err = bus_dmamap_create(txq->ift_desc_tag, 0, &txq->ift_sds.ifsd_map[i]);
|
|
if (err != 0) {
|
|
device_printf(dev, "Unable to create TX DMA map\n");
|
|
goto fail;
|
|
}
|
|
}
|
|
#endif
|
|
return (0);
|
|
fail:
|
|
/* We free all, it handles case where we are in the middle */
|
|
iflib_tx_structures_free(ctx);
|
|
return (err);
|
|
}
|
|
|
|
static void
|
|
iflib_txsd_destroy(if_ctx_t ctx, iflib_txq_t txq, int i)
|
|
{
|
|
bus_dmamap_t map;
|
|
|
|
map = NULL;
|
|
if (txq->ift_sds.ifsd_map != NULL)
|
|
map = txq->ift_sds.ifsd_map[i];
|
|
if (map != NULL) {
|
|
bus_dmamap_unload(txq->ift_desc_tag, map);
|
|
bus_dmamap_destroy(txq->ift_desc_tag, map);
|
|
txq->ift_sds.ifsd_map[i] = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
iflib_txq_destroy(iflib_txq_t txq)
|
|
{
|
|
if_ctx_t ctx = txq->ift_ctx;
|
|
|
|
for (int i = 0; i < txq->ift_size; i++)
|
|
iflib_txsd_destroy(ctx, txq, i);
|
|
if (txq->ift_sds.ifsd_map != NULL) {
|
|
free(txq->ift_sds.ifsd_map, M_IFLIB);
|
|
txq->ift_sds.ifsd_map = NULL;
|
|
}
|
|
if (txq->ift_sds.ifsd_m != NULL) {
|
|
free(txq->ift_sds.ifsd_m, M_IFLIB);
|
|
txq->ift_sds.ifsd_m = NULL;
|
|
}
|
|
if (txq->ift_sds.ifsd_flags != NULL) {
|
|
free(txq->ift_sds.ifsd_flags, M_IFLIB);
|
|
txq->ift_sds.ifsd_flags = NULL;
|
|
}
|
|
if (txq->ift_desc_tag != NULL) {
|
|
bus_dma_tag_destroy(txq->ift_desc_tag);
|
|
txq->ift_desc_tag = NULL;
|
|
}
|
|
if (txq->ift_tso_desc_tag != NULL) {
|
|
bus_dma_tag_destroy(txq->ift_tso_desc_tag);
|
|
txq->ift_tso_desc_tag = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
iflib_txsd_free(if_ctx_t ctx, iflib_txq_t txq, int i)
|
|
{
|
|
struct mbuf **mp;
|
|
|
|
mp = &txq->ift_sds.ifsd_m[i];
|
|
if (*mp == NULL)
|
|
return;
|
|
|
|
if (txq->ift_sds.ifsd_map != NULL) {
|
|
bus_dmamap_sync(txq->ift_desc_tag,
|
|
txq->ift_sds.ifsd_map[i],
|
|
BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(txq->ift_desc_tag,
|
|
txq->ift_sds.ifsd_map[i]);
|
|
}
|
|
m_free(*mp);
|
|
DBG_COUNTER_INC(tx_frees);
|
|
*mp = NULL;
|
|
}
|
|
|
|
static int
|
|
iflib_txq_setup(iflib_txq_t txq)
|
|
{
|
|
if_ctx_t ctx = txq->ift_ctx;
|
|
if_softc_ctx_t scctx = &ctx->ifc_softc_ctx;
|
|
iflib_dma_info_t di;
|
|
int i;
|
|
|
|
/* Set number of descriptors available */
|
|
txq->ift_qstatus = IFLIB_QUEUE_IDLE;
|
|
/* XXX make configurable */
|
|
txq->ift_update_freq = IFLIB_DEFAULT_TX_UPDATE_FREQ;
|
|
|
|
/* Reset indices */
|
|
txq->ift_cidx_processed = 0;
|
|
txq->ift_pidx = txq->ift_cidx = txq->ift_npending = 0;
|
|
txq->ift_size = scctx->isc_ntxd[txq->ift_br_offset];
|
|
|
|
for (i = 0, di = txq->ift_ifdi; i < ctx->ifc_nhwtxqs; i++, di++)
|
|
bzero((void *)di->idi_vaddr, di->idi_size);
|
|
|
|
IFDI_TXQ_SETUP(ctx, txq->ift_id);
|
|
for (i = 0, di = txq->ift_ifdi; i < ctx->ifc_nhwtxqs; i++, di++)
|
|
bus_dmamap_sync(di->idi_tag, di->idi_map,
|
|
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
|
|
return (0);
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Allocate memory for rx_buffer structures. Since we use one
|
|
* rx_buffer per received packet, the maximum number of rx_buffer's
|
|
* that we'll need is equal to the number of receive descriptors
|
|
* that we've allocated.
|
|
*
|
|
**********************************************************************/
|
|
static int
|
|
iflib_rxsd_alloc(iflib_rxq_t rxq)
|
|
{
|
|
if_ctx_t ctx = rxq->ifr_ctx;
|
|
if_shared_ctx_t sctx = ctx->ifc_sctx;
|
|
if_softc_ctx_t scctx = &ctx->ifc_softc_ctx;
|
|
device_t dev = ctx->ifc_dev;
|
|
iflib_fl_t fl;
|
|
int err;
|
|
|
|
MPASS(scctx->isc_nrxd[0] > 0);
|
|
MPASS(scctx->isc_nrxd[rxq->ifr_fl_offset] > 0);
|
|
|
|
fl = rxq->ifr_fl;
|
|
for (int i = 0; i < rxq->ifr_nfl; i++, fl++) {
|
|
fl->ifl_size = scctx->isc_nrxd[rxq->ifr_fl_offset]; /* this isn't necessarily the same */
|
|
err = bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */
|
|
1, 0, /* alignment, bounds */
|
|
BUS_SPACE_MAXADDR, /* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
sctx->isc_rx_maxsize, /* maxsize */
|
|
sctx->isc_rx_nsegments, /* nsegments */
|
|
sctx->isc_rx_maxsegsize, /* maxsegsize */
|
|
0, /* flags */
|
|
NULL, /* lockfunc */
|
|
NULL, /* lockarg */
|
|
&fl->ifl_desc_tag);
|
|
if (err) {
|
|
device_printf(dev, "%s: bus_dma_tag_create failed %d\n",
|
|
__func__, err);
|
|
goto fail;
|
|
}
|
|
if (!(fl->ifl_sds.ifsd_flags =
|
|
(uint8_t *) malloc(sizeof(uint8_t) *
|
|
scctx->isc_nrxd[rxq->ifr_fl_offset], M_IFLIB, M_NOWAIT | M_ZERO))) {
|
|
device_printf(dev, "Unable to allocate tx_buffer memory\n");
|
|
err = ENOMEM;
|
|
goto fail;
|
|
}
|
|
if (!(fl->ifl_sds.ifsd_m =
|
|
(struct mbuf **) malloc(sizeof(struct mbuf *) *
|
|
scctx->isc_nrxd[rxq->ifr_fl_offset], M_IFLIB, M_NOWAIT | M_ZERO))) {
|
|
device_printf(dev, "Unable to allocate tx_buffer memory\n");
|
|
err = ENOMEM;
|
|
goto fail;
|
|
}
|
|
if (!(fl->ifl_sds.ifsd_cl =
|
|
(caddr_t *) malloc(sizeof(caddr_t) *
|
|
scctx->isc_nrxd[rxq->ifr_fl_offset], M_IFLIB, M_NOWAIT | M_ZERO))) {
|
|
device_printf(dev, "Unable to allocate tx_buffer memory\n");
|
|
err = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
/* Create the descriptor buffer dma maps */
|
|
#if defined(ACPI_DMAR) || (! (defined(__i386__) || defined(__amd64__)))
|
|
if ((ctx->ifc_flags & IFC_DMAR) == 0)
|
|
continue;
|
|
|
|
if (!(fl->ifl_sds.ifsd_map =
|
|
(bus_dmamap_t *) malloc(sizeof(bus_dmamap_t) * scctx->isc_nrxd[rxq->ifr_fl_offset], M_IFLIB, M_NOWAIT | M_ZERO))) {
|
|
device_printf(dev, "Unable to allocate tx_buffer map memory\n");
|
|
err = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
for (int i = 0; i < scctx->isc_nrxd[rxq->ifr_fl_offset]; i++) {
|
|
err = bus_dmamap_create(fl->ifl_desc_tag, 0, &fl->ifl_sds.ifsd_map[i]);
|
|
if (err != 0) {
|
|
device_printf(dev, "Unable to create RX buffer DMA map\n");
|
|
goto fail;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
return (0);
|
|
|
|
fail:
|
|
iflib_rx_structures_free(ctx);
|
|
return (err);
|
|
}
|
|
|
|
|
|
/*
|
|
* Internal service routines
|
|
*/
|
|
|
|
struct rxq_refill_cb_arg {
|
|
int error;
|
|
bus_dma_segment_t seg;
|
|
int nseg;
|
|
};
|
|
|
|
static void
|
|
_rxq_refill_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
|
|
{
|
|
struct rxq_refill_cb_arg *cb_arg = arg;
|
|
|
|
cb_arg->error = error;
|
|
cb_arg->seg = segs[0];
|
|
cb_arg->nseg = nseg;
|
|
}
|
|
|
|
|
|
#ifdef ACPI_DMAR
|
|
#define IS_DMAR(ctx) (ctx->ifc_flags & IFC_DMAR)
|
|
#else
|
|
#define IS_DMAR(ctx) (0)
|
|
#endif
|
|
|
|
/**
|
|
* rxq_refill - refill an rxq free-buffer list
|
|
* @ctx: the iflib context
|
|
* @rxq: the free-list to refill
|
|
* @n: the number of new buffers to allocate
|
|
*
|
|
* (Re)populate an rxq free-buffer list with up to @n new packet buffers.
|
|
* The caller must assure that @n does not exceed the queue's capacity.
|
|
*/
|
|
static void
|
|
_iflib_fl_refill(if_ctx_t ctx, iflib_fl_t fl, int count)
|
|
{
|
|
struct mbuf *m;
|
|
int idx, pidx = fl->ifl_pidx;
|
|
caddr_t cl, *sd_cl;
|
|
struct mbuf **sd_m;
|
|
uint8_t *sd_flags;
|
|
struct if_rxd_update iru;
|
|
bus_dmamap_t *sd_map;
|
|
int n, i = 0;
|
|
uint64_t bus_addr;
|
|
int err;
|
|
|
|
sd_m = fl->ifl_sds.ifsd_m;
|
|
sd_map = fl->ifl_sds.ifsd_map;
|
|
sd_cl = fl->ifl_sds.ifsd_cl;
|
|
sd_flags = fl->ifl_sds.ifsd_flags;
|
|
idx = pidx;
|
|
|
|
n = count;
|
|
MPASS(n > 0);
|
|
MPASS(fl->ifl_credits + n <= fl->ifl_size);
|
|
|
|
if (pidx < fl->ifl_cidx)
|
|
MPASS(pidx + n <= fl->ifl_cidx);
|
|
if (pidx == fl->ifl_cidx && (fl->ifl_credits < fl->ifl_size))
|
|
MPASS(fl->ifl_gen == 0);
|
|
if (pidx > fl->ifl_cidx)
|
|
MPASS(n <= fl->ifl_size - pidx + fl->ifl_cidx);
|
|
|
|
DBG_COUNTER_INC(fl_refills);
|
|
if (n > 8)
|
|
DBG_COUNTER_INC(fl_refills_large);
|
|
iru.iru_paddrs = fl->ifl_bus_addrs;
|
|
iru.iru_vaddrs = &fl->ifl_vm_addrs[0];
|
|
iru.iru_idxs = fl->ifl_rxd_idxs;
|
|
iru.iru_qsidx = fl->ifl_rxq->ifr_id;
|
|
iru.iru_buf_size = fl->ifl_buf_size;
|
|
iru.iru_flidx = fl->ifl_id;
|
|
while (n--) {
|
|
/*
|
|
* We allocate an uninitialized mbuf + cluster, mbuf is
|
|
* initialized after rx.
|
|
*
|
|
* If the cluster is still set then we know a minimum sized packet was received
|
|
*/
|
|
if ((cl = sd_cl[idx]) == NULL) {
|
|
if ((cl = sd_cl[idx] = m_cljget(NULL, M_NOWAIT, fl->ifl_buf_size)) == NULL)
|
|
break;
|
|
#if MEMORY_LOGGING
|
|
fl->ifl_cl_enqueued++;
|
|
#endif
|
|
}
|
|
if ((m = m_gethdr(M_NOWAIT, MT_NOINIT)) == NULL) {
|
|
break;
|
|
}
|
|
#if MEMORY_LOGGING
|
|
fl->ifl_m_enqueued++;
|
|
#endif
|
|
|
|
DBG_COUNTER_INC(rx_allocs);
|
|
#if defined(__i386__) || defined(__amd64__)
|
|
if (!IS_DMAR(ctx)) {
|
|
bus_addr = pmap_kextract((vm_offset_t)cl);
|
|
} else
|
|
#endif
|
|
{
|
|
struct rxq_refill_cb_arg cb_arg;
|
|
iflib_rxq_t q;
|
|
|
|
cb_arg.error = 0;
|
|
q = fl->ifl_rxq;
|
|
MPASS(sd_map != NULL);
|
|
MPASS(sd_map[idx] != NULL);
|
|
err = bus_dmamap_load(fl->ifl_desc_tag, sd_map[idx],
|
|
cl, fl->ifl_buf_size, _rxq_refill_cb, &cb_arg, 0);
|
|
bus_dmamap_sync(fl->ifl_desc_tag, sd_map[idx], BUS_DMASYNC_PREREAD);
|
|
|
|
if (err != 0 || cb_arg.error) {
|
|
/*
|
|
* !zone_pack ?
|
|
*/
|
|
if (fl->ifl_zone == zone_pack)
|
|
uma_zfree(fl->ifl_zone, cl);
|
|
m_free(m);
|
|
n = 0;
|
|
goto done;
|
|
}
|
|
bus_addr = cb_arg.seg.ds_addr;
|
|
}
|
|
sd_flags[idx] |= RX_SW_DESC_INUSE;
|
|
|
|
MPASS(sd_m[idx] == NULL);
|
|
sd_cl[idx] = cl;
|
|
sd_m[idx] = m;
|
|
fl->ifl_rxd_idxs[i] = idx;
|
|
fl->ifl_bus_addrs[i] = bus_addr;
|
|
fl->ifl_vm_addrs[i] = cl;
|
|
fl->ifl_credits++;
|
|
i++;
|
|
MPASS(fl->ifl_credits <= fl->ifl_size);
|
|
if (++idx == fl->ifl_size) {
|
|
fl->ifl_gen = 1;
|
|
idx = 0;
|
|
}
|
|
if (n == 0 || i == IFLIB_MAX_RX_REFRESH) {
|
|
iru.iru_pidx = pidx;
|
|
iru.iru_count = i;
|
|
ctx->isc_rxd_refill(ctx->ifc_softc, &iru);
|
|
i = 0;
|
|
pidx = idx;
|
|
}
|
|
fl->ifl_pidx = idx;
|
|
|
|
}
|
|
done:
|
|
DBG_COUNTER_INC(rxd_flush);
|
|
if (fl->ifl_pidx == 0)
|
|
pidx = fl->ifl_size - 1;
|
|
else
|
|
pidx = fl->ifl_pidx - 1;
|
|
|
|
if (sd_map)
|
|
bus_dmamap_sync(fl->ifl_ifdi->idi_tag, fl->ifl_ifdi->idi_map,
|
|
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
|
|
ctx->isc_rxd_flush(ctx->ifc_softc, fl->ifl_rxq->ifr_id, fl->ifl_id, pidx);
|
|
}
|
|
|
|
static __inline void
|
|
__iflib_fl_refill_lt(if_ctx_t ctx, iflib_fl_t fl, int max)
|
|
{
|
|
/* we avoid allowing pidx to catch up with cidx as it confuses ixl */
|
|
int32_t reclaimable = fl->ifl_size - fl->ifl_credits - 1;
|
|
#ifdef INVARIANTS
|
|
int32_t delta = fl->ifl_size - get_inuse(fl->ifl_size, fl->ifl_cidx, fl->ifl_pidx, fl->ifl_gen) - 1;
|
|
#endif
|
|
|
|
MPASS(fl->ifl_credits <= fl->ifl_size);
|
|
MPASS(reclaimable == delta);
|
|
|
|
if (reclaimable > 0)
|
|
_iflib_fl_refill(ctx, fl, min(max, reclaimable));
|
|
}
|
|
|
|
static void
|
|
iflib_fl_bufs_free(iflib_fl_t fl)
|
|
{
|
|
iflib_dma_info_t idi = fl->ifl_ifdi;
|
|
uint32_t i;
|
|
|
|
for (i = 0; i < fl->ifl_size; i++) {
|
|
struct mbuf **sd_m = &fl->ifl_sds.ifsd_m[i];
|
|
uint8_t *sd_flags = &fl->ifl_sds.ifsd_flags[i];
|
|
caddr_t *sd_cl = &fl->ifl_sds.ifsd_cl[i];
|
|
|
|
if (*sd_flags & RX_SW_DESC_INUSE) {
|
|
if (fl->ifl_sds.ifsd_map != NULL) {
|
|
bus_dmamap_t sd_map = fl->ifl_sds.ifsd_map[i];
|
|
bus_dmamap_unload(fl->ifl_desc_tag, sd_map);
|
|
bus_dmamap_destroy(fl->ifl_desc_tag, sd_map);
|
|
}
|
|
if (*sd_m != NULL) {
|
|
m_init(*sd_m, M_NOWAIT, MT_DATA, 0);
|
|
uma_zfree(zone_mbuf, *sd_m);
|
|
}
|
|
if (*sd_cl != NULL)
|
|
uma_zfree(fl->ifl_zone, *sd_cl);
|
|
*sd_flags = 0;
|
|
} else {
|
|
MPASS(*sd_cl == NULL);
|
|
MPASS(*sd_m == NULL);
|
|
}
|
|
#if MEMORY_LOGGING
|
|
fl->ifl_m_dequeued++;
|
|
fl->ifl_cl_dequeued++;
|
|
#endif
|
|
*sd_cl = NULL;
|
|
*sd_m = NULL;
|
|
}
|
|
#ifdef INVARIANTS
|
|
for (i = 0; i < fl->ifl_size; i++) {
|
|
MPASS(fl->ifl_sds.ifsd_flags[i] == 0);
|
|
MPASS(fl->ifl_sds.ifsd_cl[i] == NULL);
|
|
MPASS(fl->ifl_sds.ifsd_m[i] == NULL);
|
|
}
|
|
#endif
|
|
/*
|
|
* Reset free list values
|
|
*/
|
|
fl->ifl_credits = fl->ifl_cidx = fl->ifl_pidx = fl->ifl_gen = 0;;
|
|
bzero(idi->idi_vaddr, idi->idi_size);
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Initialize a receive ring and its buffers.
|
|
*
|
|
**********************************************************************/
|
|
static int
|
|
iflib_fl_setup(iflib_fl_t fl)
|
|
{
|
|
iflib_rxq_t rxq = fl->ifl_rxq;
|
|
if_ctx_t ctx = rxq->ifr_ctx;
|
|
if_softc_ctx_t sctx = &ctx->ifc_softc_ctx;
|
|
|
|
/*
|
|
** Free current RX buffer structs and their mbufs
|
|
*/
|
|
iflib_fl_bufs_free(fl);
|
|
/* Now replenish the mbufs */
|
|
MPASS(fl->ifl_credits == 0);
|
|
/*
|
|
* XXX don't set the max_frame_size to larger
|
|
* than the hardware can handle
|
|
*/
|
|
if (sctx->isc_max_frame_size <= 2048)
|
|
fl->ifl_buf_size = MCLBYTES;
|
|
#ifndef CONTIGMALLOC_WORKS
|
|
else
|
|
fl->ifl_buf_size = MJUMPAGESIZE;
|
|
#else
|
|
else if (sctx->isc_max_frame_size <= 4096)
|
|
fl->ifl_buf_size = MJUMPAGESIZE;
|
|
else if (sctx->isc_max_frame_size <= 9216)
|
|
fl->ifl_buf_size = MJUM9BYTES;
|
|
else
|
|
fl->ifl_buf_size = MJUM16BYTES;
|
|
#endif
|
|
if (fl->ifl_buf_size > ctx->ifc_max_fl_buf_size)
|
|
ctx->ifc_max_fl_buf_size = fl->ifl_buf_size;
|
|
fl->ifl_cltype = m_gettype(fl->ifl_buf_size);
|
|
fl->ifl_zone = m_getzone(fl->ifl_buf_size);
|
|
|
|
|
|
/* avoid pre-allocating zillions of clusters to an idle card
|
|
* potentially speeding up attach
|
|
*/
|
|
_iflib_fl_refill(ctx, fl, min(128, fl->ifl_size));
|
|
MPASS(min(128, fl->ifl_size) == fl->ifl_credits);
|
|
if (min(128, fl->ifl_size) != fl->ifl_credits)
|
|
return (ENOBUFS);
|
|
/*
|
|
* handle failure
|
|
*/
|
|
MPASS(rxq != NULL);
|
|
MPASS(fl->ifl_ifdi != NULL);
|
|
bus_dmamap_sync(fl->ifl_ifdi->idi_tag, fl->ifl_ifdi->idi_map,
|
|
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
|
|
return (0);
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Free receive ring data structures
|
|
*
|
|
**********************************************************************/
|
|
static void
|
|
iflib_rx_sds_free(iflib_rxq_t rxq)
|
|
{
|
|
iflib_fl_t fl;
|
|
int i;
|
|
|
|
if (rxq->ifr_fl != NULL) {
|
|
for (i = 0; i < rxq->ifr_nfl; i++) {
|
|
fl = &rxq->ifr_fl[i];
|
|
if (fl->ifl_desc_tag != NULL) {
|
|
bus_dma_tag_destroy(fl->ifl_desc_tag);
|
|
fl->ifl_desc_tag = NULL;
|
|
}
|
|
free(fl->ifl_sds.ifsd_m, M_IFLIB);
|
|
free(fl->ifl_sds.ifsd_cl, M_IFLIB);
|
|
/* XXX destroy maps first */
|
|
free(fl->ifl_sds.ifsd_map, M_IFLIB);
|
|
fl->ifl_sds.ifsd_m = NULL;
|
|
fl->ifl_sds.ifsd_cl = NULL;
|
|
fl->ifl_sds.ifsd_map = NULL;
|
|
}
|
|
free(rxq->ifr_fl, M_IFLIB);
|
|
rxq->ifr_fl = NULL;
|
|
rxq->ifr_cq_gen = rxq->ifr_cq_cidx = rxq->ifr_cq_pidx = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* MI independent logic
|
|
*
|
|
*/
|
|
static void
|
|
iflib_timer(void *arg)
|
|
{
|
|
iflib_txq_t txq = arg;
|
|
if_ctx_t ctx = txq->ift_ctx;
|
|
|
|
if (!(if_getdrvflags(ctx->ifc_ifp) & IFF_DRV_RUNNING))
|
|
return;
|
|
/*
|
|
** Check on the state of the TX queue(s), this
|
|
** can be done without the lock because its RO
|
|
** and the HUNG state will be static if set.
|
|
*/
|
|
IFDI_TIMER(ctx, txq->ift_id);
|
|
if ((txq->ift_qstatus == IFLIB_QUEUE_HUNG) &&
|
|
((txq->ift_cleaned_prev == txq->ift_cleaned) ||
|
|
(ctx->ifc_pause_frames == 0)))
|
|
goto hung;
|
|
|
|
if (ifmp_ring_is_stalled(txq->ift_br))
|
|
txq->ift_qstatus = IFLIB_QUEUE_HUNG;
|
|
txq->ift_cleaned_prev = txq->ift_cleaned;
|
|
/* handle any laggards */
|
|
if (txq->ift_db_pending)
|
|
GROUPTASK_ENQUEUE(&txq->ift_task);
|
|
|
|
ctx->ifc_pause_frames = 0;
|
|
if (if_getdrvflags(ctx->ifc_ifp) & IFF_DRV_RUNNING)
|
|
callout_reset_on(&txq->ift_timer, hz/2, iflib_timer, txq, txq->ift_timer.c_cpu);
|
|
return;
|
|
hung:
|
|
CTX_LOCK(ctx);
|
|
if_setdrvflagbits(ctx->ifc_ifp, IFF_DRV_OACTIVE, IFF_DRV_RUNNING);
|
|
device_printf(ctx->ifc_dev, "TX(%d) desc avail = %d, pidx = %d\n",
|
|
txq->ift_id, TXQ_AVAIL(txq), txq->ift_pidx);
|
|
|
|
IFDI_WATCHDOG_RESET(ctx);
|
|
ctx->ifc_watchdog_events++;
|
|
ctx->ifc_pause_frames = 0;
|
|
|
|
ctx->ifc_flags |= IFC_DO_RESET;
|
|
iflib_admin_intr_deferred(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
|
|
static void
|
|
iflib_init_locked(if_ctx_t ctx)
|
|
{
|
|
if_softc_ctx_t sctx = &ctx->ifc_softc_ctx;
|
|
if_softc_ctx_t scctx = &ctx->ifc_softc_ctx;
|
|
if_t ifp = ctx->ifc_ifp;
|
|
iflib_fl_t fl;
|
|
iflib_txq_t txq;
|
|
iflib_rxq_t rxq;
|
|
int i, j, tx_ip_csum_flags, tx_ip6_csum_flags;
|
|
|
|
|
|
if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, IFF_DRV_RUNNING);
|
|
IFDI_INTR_DISABLE(ctx);
|
|
|
|
tx_ip_csum_flags = scctx->isc_tx_csum_flags & (CSUM_IP | CSUM_TCP | CSUM_UDP | CSUM_SCTP);
|
|
tx_ip6_csum_flags = scctx->isc_tx_csum_flags & (CSUM_IP6_TCP | CSUM_IP6_UDP | CSUM_IP6_SCTP);
|
|
/* Set hardware offload abilities */
|
|
if_clearhwassist(ifp);
|
|
if (if_getcapenable(ifp) & IFCAP_TXCSUM)
|
|
if_sethwassistbits(ifp, tx_ip_csum_flags, 0);
|
|
if (if_getcapenable(ifp) & IFCAP_TXCSUM_IPV6)
|
|
if_sethwassistbits(ifp, tx_ip6_csum_flags, 0);
|
|
if (if_getcapenable(ifp) & IFCAP_TSO4)
|
|
if_sethwassistbits(ifp, CSUM_IP_TSO, 0);
|
|
if (if_getcapenable(ifp) & IFCAP_TSO6)
|
|
if_sethwassistbits(ifp, CSUM_IP6_TSO, 0);
|
|
|
|
for (i = 0, txq = ctx->ifc_txqs; i < sctx->isc_ntxqsets; i++, txq++) {
|
|
CALLOUT_LOCK(txq);
|
|
callout_stop(&txq->ift_timer);
|
|
CALLOUT_UNLOCK(txq);
|
|
iflib_netmap_txq_init(ctx, txq);
|
|
}
|
|
for (i = 0, rxq = ctx->ifc_rxqs; i < sctx->isc_nrxqsets; i++, rxq++) {
|
|
MPASS(rxq->ifr_id == i);
|
|
iflib_netmap_rxq_init(ctx, rxq);
|
|
}
|
|
#ifdef INVARIANTS
|
|
i = if_getdrvflags(ifp);
|
|
#endif
|
|
IFDI_INIT(ctx);
|
|
MPASS(if_getdrvflags(ifp) == i);
|
|
for (i = 0, rxq = ctx->ifc_rxqs; i < sctx->isc_nrxqsets; i++, rxq++) {
|
|
/* XXX this should really be done on a per-queue basis */
|
|
if (if_getcapenable(ifp) & IFCAP_NETMAP)
|
|
continue;
|
|
for (j = 0, fl = rxq->ifr_fl; j < rxq->ifr_nfl; j++, fl++) {
|
|
if (iflib_fl_setup(fl)) {
|
|
device_printf(ctx->ifc_dev, "freelist setup failed - check cluster settings\n");
|
|
goto done;
|
|
}
|
|
}
|
|
}
|
|
done:
|
|
if_setdrvflagbits(ctx->ifc_ifp, IFF_DRV_RUNNING, IFF_DRV_OACTIVE);
|
|
IFDI_INTR_ENABLE(ctx);
|
|
txq = ctx->ifc_txqs;
|
|
for (i = 0; i < sctx->isc_ntxqsets; i++, txq++)
|
|
callout_reset_on(&txq->ift_timer, hz/2, iflib_timer, txq,
|
|
txq->ift_timer.c_cpu);
|
|
}
|
|
|
|
static int
|
|
iflib_media_change(if_t ifp)
|
|
{
|
|
if_ctx_t ctx = if_getsoftc(ifp);
|
|
int err;
|
|
|
|
CTX_LOCK(ctx);
|
|
if ((err = IFDI_MEDIA_CHANGE(ctx)) == 0)
|
|
iflib_init_locked(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
return (err);
|
|
}
|
|
|
|
static void
|
|
iflib_media_status(if_t ifp, struct ifmediareq *ifmr)
|
|
{
|
|
if_ctx_t ctx = if_getsoftc(ifp);
|
|
|
|
CTX_LOCK(ctx);
|
|
IFDI_UPDATE_ADMIN_STATUS(ctx);
|
|
IFDI_MEDIA_STATUS(ctx, ifmr);
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
|
|
static void
|
|
iflib_stop(if_ctx_t ctx)
|
|
{
|
|
iflib_txq_t txq = ctx->ifc_txqs;
|
|
iflib_rxq_t rxq = ctx->ifc_rxqs;
|
|
if_softc_ctx_t scctx = &ctx->ifc_softc_ctx;
|
|
iflib_dma_info_t di;
|
|
iflib_fl_t fl;
|
|
int i, j;
|
|
|
|
/* Tell the stack that the interface is no longer active */
|
|
if_setdrvflagbits(ctx->ifc_ifp, IFF_DRV_OACTIVE, IFF_DRV_RUNNING);
|
|
|
|
IFDI_INTR_DISABLE(ctx);
|
|
DELAY(1000);
|
|
IFDI_STOP(ctx);
|
|
DELAY(1000);
|
|
|
|
iflib_debug_reset();
|
|
/* Wait for current tx queue users to exit to disarm watchdog timer. */
|
|
for (i = 0; i < scctx->isc_ntxqsets; i++, txq++) {
|
|
/* make sure all transmitters have completed before proceeding XXX */
|
|
|
|
/* clean any enqueued buffers */
|
|
iflib_ifmp_purge(txq);
|
|
/* Free any existing tx buffers. */
|
|
for (j = 0; j < txq->ift_size; j++) {
|
|
iflib_txsd_free(ctx, txq, j);
|
|
}
|
|
txq->ift_processed = txq->ift_cleaned = txq->ift_cidx_processed = 0;
|
|
txq->ift_in_use = txq->ift_gen = txq->ift_cidx = txq->ift_pidx = txq->ift_no_desc_avail = 0;
|
|
txq->ift_closed = txq->ift_mbuf_defrag = txq->ift_mbuf_defrag_failed = 0;
|
|
txq->ift_no_tx_dma_setup = txq->ift_txd_encap_efbig = txq->ift_map_failed = 0;
|
|
txq->ift_pullups = 0;
|
|
ifmp_ring_reset_stats(txq->ift_br);
|
|
for (j = 0, di = txq->ift_ifdi; j < ctx->ifc_nhwtxqs; j++, di++)
|
|
bzero((void *)di->idi_vaddr, di->idi_size);
|
|
}
|
|
for (i = 0; i < scctx->isc_nrxqsets; i++, rxq++) {
|
|
/* make sure all transmitters have completed before proceeding XXX */
|
|
|
|
for (j = 0, di = txq->ift_ifdi; j < ctx->ifc_nhwrxqs; j++, di++)
|
|
bzero((void *)di->idi_vaddr, di->idi_size);
|
|
/* also resets the free lists pidx/cidx */
|
|
for (j = 0, fl = rxq->ifr_fl; j < rxq->ifr_nfl; j++, fl++)
|
|
iflib_fl_bufs_free(fl);
|
|
}
|
|
}
|
|
|
|
static inline caddr_t
|
|
calc_next_rxd(iflib_fl_t fl, int cidx)
|
|
{
|
|
qidx_t size;
|
|
int nrxd;
|
|
caddr_t start, end, cur, next;
|
|
|
|
nrxd = fl->ifl_size;
|
|
size = fl->ifl_rxd_size;
|
|
start = fl->ifl_ifdi->idi_vaddr;
|
|
|
|
if (__predict_false(size == 0))
|
|
return (start);
|
|
cur = start + size*cidx;
|
|
end = start + size*nrxd;
|
|
next = CACHE_PTR_NEXT(cur);
|
|
return (next < end ? next : start);
|
|
}
|
|
|
|
static inline void
|
|
prefetch_pkts(iflib_fl_t fl, int cidx)
|
|
{
|
|
int nextptr;
|
|
int nrxd = fl->ifl_size;
|
|
caddr_t next_rxd;
|
|
|
|
|
|
nextptr = (cidx + CACHE_PTR_INCREMENT) & (nrxd-1);
|
|
prefetch(&fl->ifl_sds.ifsd_m[nextptr]);
|
|
prefetch(&fl->ifl_sds.ifsd_cl[nextptr]);
|
|
next_rxd = calc_next_rxd(fl, cidx);
|
|
prefetch(next_rxd);
|
|
prefetch(fl->ifl_sds.ifsd_m[(cidx + 1) & (nrxd-1)]);
|
|
prefetch(fl->ifl_sds.ifsd_m[(cidx + 2) & (nrxd-1)]);
|
|
prefetch(fl->ifl_sds.ifsd_m[(cidx + 3) & (nrxd-1)]);
|
|
prefetch(fl->ifl_sds.ifsd_m[(cidx + 4) & (nrxd-1)]);
|
|
prefetch(fl->ifl_sds.ifsd_cl[(cidx + 1) & (nrxd-1)]);
|
|
prefetch(fl->ifl_sds.ifsd_cl[(cidx + 2) & (nrxd-1)]);
|
|
prefetch(fl->ifl_sds.ifsd_cl[(cidx + 3) & (nrxd-1)]);
|
|
prefetch(fl->ifl_sds.ifsd_cl[(cidx + 4) & (nrxd-1)]);
|
|
}
|
|
|
|
static void
|
|
rxd_frag_to_sd(iflib_rxq_t rxq, if_rxd_frag_t irf, int unload, if_rxsd_t sd)
|
|
{
|
|
int flid, cidx;
|
|
bus_dmamap_t map;
|
|
iflib_fl_t fl;
|
|
iflib_dma_info_t di;
|
|
int next;
|
|
|
|
map = NULL;
|
|
flid = irf->irf_flid;
|
|
cidx = irf->irf_idx;
|
|
fl = &rxq->ifr_fl[flid];
|
|
sd->ifsd_fl = fl;
|
|
sd->ifsd_cidx = cidx;
|
|
sd->ifsd_m = &fl->ifl_sds.ifsd_m[cidx];
|
|
sd->ifsd_cl = &fl->ifl_sds.ifsd_cl[cidx];
|
|
fl->ifl_credits--;
|
|
#if MEMORY_LOGGING
|
|
fl->ifl_m_dequeued++;
|
|
#endif
|
|
if (rxq->ifr_ctx->ifc_flags & IFC_PREFETCH)
|
|
prefetch_pkts(fl, cidx);
|
|
if (fl->ifl_sds.ifsd_map != NULL) {
|
|
next = (cidx + CACHE_PTR_INCREMENT) & (fl->ifl_size-1);
|
|
prefetch(&fl->ifl_sds.ifsd_map[next]);
|
|
map = fl->ifl_sds.ifsd_map[cidx];
|
|
di = fl->ifl_ifdi;
|
|
next = (cidx + CACHE_LINE_SIZE) & (fl->ifl_size-1);
|
|
prefetch(&fl->ifl_sds.ifsd_flags[next]);
|
|
bus_dmamap_sync(di->idi_tag, di->idi_map,
|
|
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
|
|
|
|
/* not valid assert if bxe really does SGE from non-contiguous elements */
|
|
MPASS(fl->ifl_cidx == cidx);
|
|
if (unload)
|
|
bus_dmamap_unload(fl->ifl_desc_tag, map);
|
|
}
|
|
fl->ifl_cidx = (fl->ifl_cidx + 1) & (fl->ifl_size-1);
|
|
if (__predict_false(fl->ifl_cidx == 0))
|
|
fl->ifl_gen = 0;
|
|
if (map != NULL)
|
|
bus_dmamap_sync(fl->ifl_ifdi->idi_tag, fl->ifl_ifdi->idi_map,
|
|
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
|
|
}
|
|
|
|
static struct mbuf *
|
|
assemble_segments(iflib_rxq_t rxq, if_rxd_info_t ri, if_rxsd_t sd)
|
|
{
|
|
int i, padlen , flags;
|
|
struct mbuf *m, *mh, *mt;
|
|
caddr_t cl;
|
|
|
|
i = 0;
|
|
mh = NULL;
|
|
do {
|
|
rxd_frag_to_sd(rxq, &ri->iri_frags[i], TRUE, sd);
|
|
|
|
MPASS(*sd->ifsd_cl != NULL);
|
|
MPASS(*sd->ifsd_m != NULL);
|
|
|
|
/* Don't include zero-length frags */
|
|
if (ri->iri_frags[i].irf_len == 0) {
|
|
/* XXX we can save the cluster here, but not the mbuf */
|
|
m_init(*sd->ifsd_m, M_NOWAIT, MT_DATA, 0);
|
|
m_free(*sd->ifsd_m);
|
|
*sd->ifsd_m = NULL;
|
|
continue;
|
|
}
|
|
m = *sd->ifsd_m;
|
|
*sd->ifsd_m = NULL;
|
|
if (mh == NULL) {
|
|
flags = M_PKTHDR|M_EXT;
|
|
mh = mt = m;
|
|
padlen = ri->iri_pad;
|
|
} else {
|
|
flags = M_EXT;
|
|
mt->m_next = m;
|
|
mt = m;
|
|
/* assuming padding is only on the first fragment */
|
|
padlen = 0;
|
|
}
|
|
cl = *sd->ifsd_cl;
|
|
*sd->ifsd_cl = NULL;
|
|
|
|
/* Can these two be made one ? */
|
|
m_init(m, M_NOWAIT, MT_DATA, flags);
|
|
m_cljset(m, cl, sd->ifsd_fl->ifl_cltype);
|
|
/*
|
|
* These must follow m_init and m_cljset
|
|
*/
|
|
m->m_data += padlen;
|
|
ri->iri_len -= padlen;
|
|
m->m_len = ri->iri_frags[i].irf_len;
|
|
} while (++i < ri->iri_nfrags);
|
|
|
|
return (mh);
|
|
}
|
|
|
|
/*
|
|
* Process one software descriptor
|
|
*/
|
|
static struct mbuf *
|
|
iflib_rxd_pkt_get(iflib_rxq_t rxq, if_rxd_info_t ri)
|
|
{
|
|
struct if_rxsd sd;
|
|
struct mbuf *m;
|
|
|
|
/* should I merge this back in now that the two paths are basically duplicated? */
|
|
if (ri->iri_nfrags == 1 &&
|
|
ri->iri_frags[0].irf_len <= IFLIB_RX_COPY_THRESH) {
|
|
rxd_frag_to_sd(rxq, &ri->iri_frags[0], FALSE, &sd);
|
|
m = *sd.ifsd_m;
|
|
*sd.ifsd_m = NULL;
|
|
m_init(m, M_NOWAIT, MT_DATA, M_PKTHDR);
|
|
#ifndef __NO_STRICT_ALIGNMENT
|
|
if (!IP_ALIGNED(m))
|
|
m->m_data += 2;
|
|
#endif
|
|
memcpy(m->m_data, *sd.ifsd_cl, ri->iri_len);
|
|
m->m_len = ri->iri_frags[0].irf_len;
|
|
} else {
|
|
m = assemble_segments(rxq, ri, &sd);
|
|
}
|
|
m->m_pkthdr.len = ri->iri_len;
|
|
m->m_pkthdr.rcvif = ri->iri_ifp;
|
|
m->m_flags |= ri->iri_flags;
|
|
m->m_pkthdr.ether_vtag = ri->iri_vtag;
|
|
m->m_pkthdr.flowid = ri->iri_flowid;
|
|
M_HASHTYPE_SET(m, ri->iri_rsstype);
|
|
m->m_pkthdr.csum_flags = ri->iri_csum_flags;
|
|
m->m_pkthdr.csum_data = ri->iri_csum_data;
|
|
return (m);
|
|
}
|
|
|
|
static bool
|
|
iflib_rxeof(iflib_rxq_t rxq, qidx_t budget)
|
|
{
|
|
if_ctx_t ctx = rxq->ifr_ctx;
|
|
if_shared_ctx_t sctx = ctx->ifc_sctx;
|
|
if_softc_ctx_t scctx = &ctx->ifc_softc_ctx;
|
|
int avail, i;
|
|
qidx_t *cidxp;
|
|
struct if_rxd_info ri;
|
|
int err, budget_left, rx_bytes, rx_pkts;
|
|
iflib_fl_t fl;
|
|
struct ifnet *ifp;
|
|
int lro_enabled;
|
|
|
|
/*
|
|
* XXX early demux data packets so that if_input processing only handles
|
|
* acks in interrupt context
|
|
*/
|
|
struct mbuf *m, *mh, *mt;
|
|
|
|
ifp = ctx->ifc_ifp;
|
|
#ifdef DEV_NETMAP
|
|
if (ifp->if_capenable & IFCAP_NETMAP) {
|
|
u_int work = 0;
|
|
if (netmap_rx_irq(ifp, rxq->ifr_id, &work))
|
|
return (FALSE);
|
|
}
|
|
#endif
|
|
|
|
mh = mt = NULL;
|
|
MPASS(budget > 0);
|
|
rx_pkts = rx_bytes = 0;
|
|
if (sctx->isc_flags & IFLIB_HAS_RXCQ)
|
|
cidxp = &rxq->ifr_cq_cidx;
|
|
else
|
|
cidxp = &rxq->ifr_fl[0].ifl_cidx;
|
|
if ((avail = iflib_rxd_avail(ctx, rxq, *cidxp, budget)) == 0) {
|
|
for (i = 0, fl = &rxq->ifr_fl[0]; i < sctx->isc_nfl; i++, fl++)
|
|
__iflib_fl_refill_lt(ctx, fl, budget + 8);
|
|
DBG_COUNTER_INC(rx_unavail);
|
|
return (false);
|
|
}
|
|
|
|
for (budget_left = budget; (budget_left > 0) && (avail > 0); budget_left--, avail--) {
|
|
if (__predict_false(!CTX_ACTIVE(ctx))) {
|
|
DBG_COUNTER_INC(rx_ctx_inactive);
|
|
break;
|
|
}
|
|
/*
|
|
* Reset client set fields to their default values
|
|
*/
|
|
rxd_info_zero(&ri);
|
|
ri.iri_qsidx = rxq->ifr_id;
|
|
ri.iri_cidx = *cidxp;
|
|
ri.iri_ifp = ifp;
|
|
ri.iri_frags = rxq->ifr_frags;
|
|
err = ctx->isc_rxd_pkt_get(ctx->ifc_softc, &ri);
|
|
|
|
if (err)
|
|
goto err;
|
|
if (sctx->isc_flags & IFLIB_HAS_RXCQ) {
|
|
*cidxp = ri.iri_cidx;
|
|
/* Update our consumer index */
|
|
/* XXX NB: shurd - check if this is still safe */
|
|
while (rxq->ifr_cq_cidx >= scctx->isc_nrxd[0]) {
|
|
rxq->ifr_cq_cidx -= scctx->isc_nrxd[0];
|
|
rxq->ifr_cq_gen = 0;
|
|
}
|
|
/* was this only a completion queue message? */
|
|
if (__predict_false(ri.iri_nfrags == 0))
|
|
continue;
|
|
}
|
|
MPASS(ri.iri_nfrags != 0);
|
|
MPASS(ri.iri_len != 0);
|
|
|
|
/* will advance the cidx on the corresponding free lists */
|
|
m = iflib_rxd_pkt_get(rxq, &ri);
|
|
if (avail == 0 && budget_left)
|
|
avail = iflib_rxd_avail(ctx, rxq, *cidxp, budget_left);
|
|
|
|
if (__predict_false(m == NULL)) {
|
|
DBG_COUNTER_INC(rx_mbuf_null);
|
|
continue;
|
|
}
|
|
/* imm_pkt: -- cxgb */
|
|
if (mh == NULL)
|
|
mh = mt = m;
|
|
else {
|
|
mt->m_nextpkt = m;
|
|
mt = m;
|
|
}
|
|
}
|
|
/* make sure that we can refill faster than drain */
|
|
for (i = 0, fl = &rxq->ifr_fl[0]; i < sctx->isc_nfl; i++, fl++)
|
|
__iflib_fl_refill_lt(ctx, fl, budget + 8);
|
|
|
|
lro_enabled = (if_getcapenable(ifp) & IFCAP_LRO);
|
|
while (mh != NULL) {
|
|
m = mh;
|
|
mh = mh->m_nextpkt;
|
|
m->m_nextpkt = NULL;
|
|
#ifndef __NO_STRICT_ALIGNMENT
|
|
if (!IP_ALIGNED(m) && (m = iflib_fixup_rx(m)) == NULL)
|
|
continue;
|
|
#endif
|
|
rx_bytes += m->m_pkthdr.len;
|
|
rx_pkts++;
|
|
#if defined(INET6) || defined(INET)
|
|
if (lro_enabled && tcp_lro_rx(&rxq->ifr_lc, m, 0) == 0)
|
|
continue;
|
|
#endif
|
|
DBG_COUNTER_INC(rx_if_input);
|
|
ifp->if_input(ifp, m);
|
|
}
|
|
|
|
if_inc_counter(ifp, IFCOUNTER_IBYTES, rx_bytes);
|
|
if_inc_counter(ifp, IFCOUNTER_IPACKETS, rx_pkts);
|
|
|
|
/*
|
|
* Flush any outstanding LRO work
|
|
*/
|
|
#if defined(INET6) || defined(INET)
|
|
tcp_lro_flush_all(&rxq->ifr_lc);
|
|
#endif
|
|
if (avail)
|
|
return true;
|
|
return (iflib_rxd_avail(ctx, rxq, *cidxp, 1));
|
|
err:
|
|
CTX_LOCK(ctx);
|
|
ctx->ifc_flags |= IFC_DO_RESET;
|
|
iflib_admin_intr_deferred(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
return (false);
|
|
}
|
|
|
|
#define TXD_NOTIFY_COUNT(txq) (((txq)->ift_size / (txq)->ift_update_freq)-1)
|
|
static inline qidx_t
|
|
txq_max_db_deferred(iflib_txq_t txq, qidx_t in_use)
|
|
{
|
|
qidx_t notify_count = TXD_NOTIFY_COUNT(txq);
|
|
qidx_t minthresh = txq->ift_size / 8;
|
|
if (in_use > 4*minthresh)
|
|
return (notify_count);
|
|
if (in_use > 2*minthresh)
|
|
return (notify_count >> 1);
|
|
if (in_use > minthresh)
|
|
return (notify_count >> 3);
|
|
return (0);
|
|
}
|
|
|
|
static inline qidx_t
|
|
txq_max_rs_deferred(iflib_txq_t txq)
|
|
{
|
|
qidx_t notify_count = TXD_NOTIFY_COUNT(txq);
|
|
qidx_t minthresh = txq->ift_size / 8;
|
|
if (txq->ift_in_use > 4*minthresh)
|
|
return (notify_count);
|
|
if (txq->ift_in_use > 2*minthresh)
|
|
return (notify_count >> 1);
|
|
if (txq->ift_in_use > minthresh)
|
|
return (notify_count >> 2);
|
|
return (2);
|
|
}
|
|
|
|
#define M_CSUM_FLAGS(m) ((m)->m_pkthdr.csum_flags)
|
|
#define M_HAS_VLANTAG(m) (m->m_flags & M_VLANTAG)
|
|
|
|
#define TXQ_MAX_DB_DEFERRED(txq, in_use) txq_max_db_deferred((txq), (in_use))
|
|
#define TXQ_MAX_RS_DEFERRED(txq) txq_max_rs_deferred(txq)
|
|
#define TXQ_MAX_DB_CONSUMED(size) (size >> 4)
|
|
|
|
/* forward compatibility for cxgb */
|
|
#define FIRST_QSET(ctx) 0
|
|
#define NTXQSETS(ctx) ((ctx)->ifc_softc_ctx.isc_ntxqsets)
|
|
#define NRXQSETS(ctx) ((ctx)->ifc_softc_ctx.isc_nrxqsets)
|
|
#define QIDX(ctx, m) ((((m)->m_pkthdr.flowid & ctx->ifc_softc_ctx.isc_rss_table_mask) % NTXQSETS(ctx)) + FIRST_QSET(ctx))
|
|
#define DESC_RECLAIMABLE(q) ((int)((q)->ift_processed - (q)->ift_cleaned - (q)->ift_ctx->ifc_softc_ctx.isc_tx_nsegments))
|
|
|
|
/* XXX we should be setting this to something other than zero */
|
|
#define RECLAIM_THRESH(ctx) ((ctx)->ifc_sctx->isc_tx_reclaim_thresh)
|
|
#define MAX_TX_DESC(ctx) ((ctx)->ifc_softc_ctx.isc_tx_tso_segments_max)
|
|
|
|
static inline bool
|
|
iflib_txd_db_check(if_ctx_t ctx, iflib_txq_t txq, int ring, qidx_t in_use)
|
|
{
|
|
qidx_t dbval, max;
|
|
bool rang;
|
|
|
|
rang = false;
|
|
max = TXQ_MAX_DB_DEFERRED(txq, in_use);
|
|
if (ring || txq->ift_db_pending >= max) {
|
|
dbval = txq->ift_npending ? txq->ift_npending : txq->ift_pidx;
|
|
ctx->isc_txd_flush(ctx->ifc_softc, txq->ift_id, dbval);
|
|
txq->ift_db_pending = txq->ift_npending = 0;
|
|
rang = true;
|
|
}
|
|
return (rang);
|
|
}
|
|
|
|
#ifdef PKT_DEBUG
|
|
static void
|
|
print_pkt(if_pkt_info_t pi)
|
|
{
|
|
printf("pi len: %d qsidx: %d nsegs: %d ndescs: %d flags: %x pidx: %d\n",
|
|
pi->ipi_len, pi->ipi_qsidx, pi->ipi_nsegs, pi->ipi_ndescs, pi->ipi_flags, pi->ipi_pidx);
|
|
printf("pi new_pidx: %d csum_flags: %lx tso_segsz: %d mflags: %x vtag: %d\n",
|
|
pi->ipi_new_pidx, pi->ipi_csum_flags, pi->ipi_tso_segsz, pi->ipi_mflags, pi->ipi_vtag);
|
|
printf("pi etype: %d ehdrlen: %d ip_hlen: %d ipproto: %d\n",
|
|
pi->ipi_etype, pi->ipi_ehdrlen, pi->ipi_ip_hlen, pi->ipi_ipproto);
|
|
}
|
|
#endif
|
|
|
|
#define IS_TSO4(pi) ((pi)->ipi_csum_flags & CSUM_IP_TSO)
|
|
#define IS_TSO6(pi) ((pi)->ipi_csum_flags & CSUM_IP6_TSO)
|
|
|
|
static int
|
|
iflib_parse_header(iflib_txq_t txq, if_pkt_info_t pi, struct mbuf **mp)
|
|
{
|
|
if_shared_ctx_t sctx = txq->ift_ctx->ifc_sctx;
|
|
struct ether_vlan_header *eh;
|
|
struct mbuf *m, *n;
|
|
|
|
n = m = *mp;
|
|
if ((sctx->isc_flags & IFLIB_NEED_SCRATCH) &&
|
|
M_WRITABLE(m) == 0) {
|
|
if ((m = m_dup(m, M_NOWAIT)) == NULL) {
|
|
return (ENOMEM);
|
|
} else {
|
|
m_freem(*mp);
|
|
n = *mp = m;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Determine where frame payload starts.
|
|
* Jump over vlan headers if already present,
|
|
* helpful for QinQ too.
|
|
*/
|
|
if (__predict_false(m->m_len < sizeof(*eh))) {
|
|
txq->ift_pullups++;
|
|
if (__predict_false((m = m_pullup(m, sizeof(*eh))) == NULL))
|
|
return (ENOMEM);
|
|
}
|
|
eh = mtod(m, struct ether_vlan_header *);
|
|
if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) {
|
|
pi->ipi_etype = ntohs(eh->evl_proto);
|
|
pi->ipi_ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN;
|
|
} else {
|
|
pi->ipi_etype = ntohs(eh->evl_encap_proto);
|
|
pi->ipi_ehdrlen = ETHER_HDR_LEN;
|
|
}
|
|
|
|
switch (pi->ipi_etype) {
|
|
#ifdef INET
|
|
case ETHERTYPE_IP:
|
|
{
|
|
struct ip *ip = NULL;
|
|
struct tcphdr *th = NULL;
|
|
int minthlen;
|
|
|
|
minthlen = min(m->m_pkthdr.len, pi->ipi_ehdrlen + sizeof(*ip) + sizeof(*th));
|
|
if (__predict_false(m->m_len < minthlen)) {
|
|
/*
|
|
* if this code bloat is causing too much of a hit
|
|
* move it to a separate function and mark it noinline
|
|
*/
|
|
if (m->m_len == pi->ipi_ehdrlen) {
|
|
n = m->m_next;
|
|
MPASS(n);
|
|
if (n->m_len >= sizeof(*ip)) {
|
|
ip = (struct ip *)n->m_data;
|
|
if (n->m_len >= (ip->ip_hl << 2) + sizeof(*th))
|
|
th = (struct tcphdr *)((caddr_t)ip + (ip->ip_hl << 2));
|
|
} else {
|
|
txq->ift_pullups++;
|
|
if (__predict_false((m = m_pullup(m, minthlen)) == NULL))
|
|
return (ENOMEM);
|
|
ip = (struct ip *)(m->m_data + pi->ipi_ehdrlen);
|
|
}
|
|
} else {
|
|
txq->ift_pullups++;
|
|
if (__predict_false((m = m_pullup(m, minthlen)) == NULL))
|
|
return (ENOMEM);
|
|
ip = (struct ip *)(m->m_data + pi->ipi_ehdrlen);
|
|
if (m->m_len >= (ip->ip_hl << 2) + sizeof(*th))
|
|
th = (struct tcphdr *)((caddr_t)ip + (ip->ip_hl << 2));
|
|
}
|
|
} else {
|
|
ip = (struct ip *)(m->m_data + pi->ipi_ehdrlen);
|
|
if (m->m_len >= (ip->ip_hl << 2) + sizeof(*th))
|
|
th = (struct tcphdr *)((caddr_t)ip + (ip->ip_hl << 2));
|
|
}
|
|
pi->ipi_ip_hlen = ip->ip_hl << 2;
|
|
pi->ipi_ipproto = ip->ip_p;
|
|
pi->ipi_flags |= IPI_TX_IPV4;
|
|
|
|
if (pi->ipi_csum_flags & CSUM_IP)
|
|
ip->ip_sum = 0;
|
|
|
|
if (pi->ipi_ipproto == IPPROTO_TCP) {
|
|
if (__predict_false(th == NULL)) {
|
|
txq->ift_pullups++;
|
|
if (__predict_false((m = m_pullup(m, (ip->ip_hl << 2) + sizeof(*th))) == NULL))
|
|
return (ENOMEM);
|
|
th = (struct tcphdr *)((caddr_t)ip + pi->ipi_ip_hlen);
|
|
}
|
|
pi->ipi_tcp_hflags = th->th_flags;
|
|
pi->ipi_tcp_hlen = th->th_off << 2;
|
|
pi->ipi_tcp_seq = th->th_seq;
|
|
}
|
|
if (IS_TSO4(pi)) {
|
|
if (__predict_false(ip->ip_p != IPPROTO_TCP))
|
|
return (ENXIO);
|
|
th->th_sum = in_pseudo(ip->ip_src.s_addr,
|
|
ip->ip_dst.s_addr, htons(IPPROTO_TCP));
|
|
pi->ipi_tso_segsz = m->m_pkthdr.tso_segsz;
|
|
if (sctx->isc_flags & IFLIB_TSO_INIT_IP) {
|
|
ip->ip_sum = 0;
|
|
ip->ip_len = htons(pi->ipi_ip_hlen + pi->ipi_tcp_hlen + pi->ipi_tso_segsz);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
#ifdef INET6
|
|
case ETHERTYPE_IPV6:
|
|
{
|
|
struct ip6_hdr *ip6 = (struct ip6_hdr *)(m->m_data + pi->ipi_ehdrlen);
|
|
struct tcphdr *th;
|
|
pi->ipi_ip_hlen = sizeof(struct ip6_hdr);
|
|
|
|
if (__predict_false(m->m_len < pi->ipi_ehdrlen + sizeof(struct ip6_hdr))) {
|
|
if (__predict_false((m = m_pullup(m, pi->ipi_ehdrlen + sizeof(struct ip6_hdr))) == NULL))
|
|
return (ENOMEM);
|
|
}
|
|
th = (struct tcphdr *)((caddr_t)ip6 + pi->ipi_ip_hlen);
|
|
|
|
/* XXX-BZ this will go badly in case of ext hdrs. */
|
|
pi->ipi_ipproto = ip6->ip6_nxt;
|
|
pi->ipi_flags |= IPI_TX_IPV6;
|
|
|
|
if (pi->ipi_ipproto == IPPROTO_TCP) {
|
|
if (__predict_false(m->m_len < pi->ipi_ehdrlen + sizeof(struct ip6_hdr) + sizeof(struct tcphdr))) {
|
|
if (__predict_false((m = m_pullup(m, pi->ipi_ehdrlen + sizeof(struct ip6_hdr) + sizeof(struct tcphdr))) == NULL))
|
|
return (ENOMEM);
|
|
}
|
|
pi->ipi_tcp_hflags = th->th_flags;
|
|
pi->ipi_tcp_hlen = th->th_off << 2;
|
|
}
|
|
if (IS_TSO6(pi)) {
|
|
|
|
if (__predict_false(ip6->ip6_nxt != IPPROTO_TCP))
|
|
return (ENXIO);
|
|
/*
|
|
* The corresponding flag is set by the stack in the IPv4
|
|
* TSO case, but not in IPv6 (at least in FreeBSD 10.2).
|
|
* So, set it here because the rest of the flow requires it.
|
|
*/
|
|
pi->ipi_csum_flags |= CSUM_TCP_IPV6;
|
|
th->th_sum = in6_cksum_pseudo(ip6, 0, IPPROTO_TCP, 0);
|
|
pi->ipi_tso_segsz = m->m_pkthdr.tso_segsz;
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
pi->ipi_csum_flags &= ~CSUM_OFFLOAD;
|
|
pi->ipi_ip_hlen = 0;
|
|
break;
|
|
}
|
|
*mp = m;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __noinline struct mbuf *
|
|
collapse_pkthdr(struct mbuf *m0)
|
|
{
|
|
struct mbuf *m, *m_next, *tmp;
|
|
|
|
m = m0;
|
|
m_next = m->m_next;
|
|
while (m_next != NULL && m_next->m_len == 0) {
|
|
m = m_next;
|
|
m->m_next = NULL;
|
|
m_free(m);
|
|
m_next = m_next->m_next;
|
|
}
|
|
m = m0;
|
|
m->m_next = m_next;
|
|
if ((m_next->m_flags & M_EXT) == 0) {
|
|
m = m_defrag(m, M_NOWAIT);
|
|
} else {
|
|
tmp = m_next->m_next;
|
|
memcpy(m_next, m, MPKTHSIZE);
|
|
m = m_next;
|
|
m->m_next = tmp;
|
|
}
|
|
return (m);
|
|
}
|
|
|
|
/*
|
|
* If dodgy hardware rejects the scatter gather chain we've handed it
|
|
* we'll need to remove the mbuf chain from ifsg_m[] before we can add the
|
|
* m_defrag'd mbufs
|
|
*/
|
|
static __noinline struct mbuf *
|
|
iflib_remove_mbuf(iflib_txq_t txq)
|
|
{
|
|
int ntxd, i, pidx;
|
|
struct mbuf *m, *mh, **ifsd_m;
|
|
|
|
pidx = txq->ift_pidx;
|
|
ifsd_m = txq->ift_sds.ifsd_m;
|
|
ntxd = txq->ift_size;
|
|
mh = m = ifsd_m[pidx];
|
|
ifsd_m[pidx] = NULL;
|
|
#if MEMORY_LOGGING
|
|
txq->ift_dequeued++;
|
|
#endif
|
|
i = 1;
|
|
|
|
while (m) {
|
|
ifsd_m[(pidx + i) & (ntxd -1)] = NULL;
|
|
#if MEMORY_LOGGING
|
|
txq->ift_dequeued++;
|
|
#endif
|
|
m = m->m_next;
|
|
i++;
|
|
}
|
|
return (mh);
|
|
}
|
|
|
|
static int
|
|
iflib_busdma_load_mbuf_sg(iflib_txq_t txq, bus_dma_tag_t tag, bus_dmamap_t map,
|
|
struct mbuf **m0, bus_dma_segment_t *segs, int *nsegs,
|
|
int max_segs, int flags)
|
|
{
|
|
if_ctx_t ctx;
|
|
if_shared_ctx_t sctx;
|
|
if_softc_ctx_t scctx;
|
|
int i, next, pidx, mask, err, maxsegsz, ntxd, count;
|
|
struct mbuf *m, *tmp, **ifsd_m, **mp;
|
|
|
|
m = *m0;
|
|
|
|
/*
|
|
* Please don't ever do this
|
|
*/
|
|
if (__predict_false(m->m_len == 0))
|
|
*m0 = m = collapse_pkthdr(m);
|
|
|
|
ctx = txq->ift_ctx;
|
|
sctx = ctx->ifc_sctx;
|
|
scctx = &ctx->ifc_softc_ctx;
|
|
ifsd_m = txq->ift_sds.ifsd_m;
|
|
ntxd = txq->ift_size;
|
|
pidx = txq->ift_pidx;
|
|
if (map != NULL) {
|
|
uint8_t *ifsd_flags = txq->ift_sds.ifsd_flags;
|
|
|
|
err = bus_dmamap_load_mbuf_sg(tag, map,
|
|
*m0, segs, nsegs, BUS_DMA_NOWAIT);
|
|
if (err)
|
|
return (err);
|
|
ifsd_flags[pidx] |= TX_SW_DESC_MAPPED;
|
|
i = 0;
|
|
next = pidx;
|
|
mask = (txq->ift_size-1);
|
|
m = *m0;
|
|
do {
|
|
mp = &ifsd_m[next];
|
|
*mp = m;
|
|
m = m->m_next;
|
|
if (__predict_false((*mp)->m_len == 0)) {
|
|
m_free(*mp);
|
|
*mp = NULL;
|
|
} else
|
|
next = (pidx + i) & (ntxd-1);
|
|
} while (m != NULL);
|
|
} else {
|
|
int buflen, sgsize, max_sgsize;
|
|
vm_offset_t vaddr;
|
|
vm_paddr_t curaddr;
|
|
|
|
count = i = 0;
|
|
maxsegsz = sctx->isc_tx_maxsize;
|
|
m = *m0;
|
|
do {
|
|
if (__predict_false(m->m_len <= 0)) {
|
|
tmp = m;
|
|
m = m->m_next;
|
|
tmp->m_next = NULL;
|
|
m_free(tmp);
|
|
continue;
|
|
}
|
|
buflen = m->m_len;
|
|
vaddr = (vm_offset_t)m->m_data;
|
|
/*
|
|
* see if we can't be smarter about physically
|
|
* contiguous mappings
|
|
*/
|
|
next = (pidx + count) & (ntxd-1);
|
|
MPASS(ifsd_m[next] == NULL);
|
|
#if MEMORY_LOGGING
|
|
txq->ift_enqueued++;
|
|
#endif
|
|
ifsd_m[next] = m;
|
|
while (buflen > 0) {
|
|
max_sgsize = MIN(buflen, maxsegsz);
|
|
curaddr = pmap_kextract(vaddr);
|
|
sgsize = PAGE_SIZE - (curaddr & PAGE_MASK);
|
|
sgsize = MIN(sgsize, max_sgsize);
|
|
segs[i].ds_addr = curaddr;
|
|
segs[i].ds_len = sgsize;
|
|
vaddr += sgsize;
|
|
buflen -= sgsize;
|
|
i++;
|
|
if (i >= max_segs)
|
|
goto err;
|
|
}
|
|
count++;
|
|
tmp = m;
|
|
m = m->m_next;
|
|
} while (m != NULL);
|
|
*nsegs = i;
|
|
}
|
|
return (0);
|
|
err:
|
|
*m0 = iflib_remove_mbuf(txq);
|
|
return (EFBIG);
|
|
}
|
|
|
|
static inline caddr_t
|
|
calc_next_txd(iflib_txq_t txq, int cidx, uint8_t qid)
|
|
{
|
|
qidx_t size;
|
|
int ntxd;
|
|
caddr_t start, end, cur, next;
|
|
|
|
ntxd = txq->ift_size;
|
|
size = txq->ift_txd_size[qid];
|
|
start = txq->ift_ifdi[qid].idi_vaddr;
|
|
|
|
if (__predict_false(size == 0))
|
|
return (start);
|
|
cur = start + size*cidx;
|
|
end = start + size*ntxd;
|
|
next = CACHE_PTR_NEXT(cur);
|
|
return (next < end ? next : start);
|
|
}
|
|
|
|
static int
|
|
iflib_encap(iflib_txq_t txq, struct mbuf **m_headp)
|
|
{
|
|
if_ctx_t ctx;
|
|
if_shared_ctx_t sctx;
|
|
if_softc_ctx_t scctx;
|
|
bus_dma_segment_t *segs;
|
|
struct mbuf *m_head;
|
|
void *next_txd;
|
|
bus_dmamap_t map;
|
|
struct if_pkt_info pi;
|
|
int remap = 0;
|
|
int err, nsegs, ndesc, max_segs, pidx, cidx, next, ntxd;
|
|
bus_dma_tag_t desc_tag;
|
|
|
|
segs = txq->ift_segs;
|
|
ctx = txq->ift_ctx;
|
|
sctx = ctx->ifc_sctx;
|
|
scctx = &ctx->ifc_softc_ctx;
|
|
segs = txq->ift_segs;
|
|
ntxd = txq->ift_size;
|
|
m_head = *m_headp;
|
|
map = NULL;
|
|
|
|
/*
|
|
* If we're doing TSO the next descriptor to clean may be quite far ahead
|
|
*/
|
|
cidx = txq->ift_cidx;
|
|
pidx = txq->ift_pidx;
|
|
if (ctx->ifc_flags & IFC_PREFETCH) {
|
|
next = (cidx + CACHE_PTR_INCREMENT) & (ntxd-1);
|
|
if (!(ctx->ifc_flags & IFLIB_HAS_TXCQ)) {
|
|
next_txd = calc_next_txd(txq, cidx, 0);
|
|
prefetch(next_txd);
|
|
}
|
|
|
|
/* prefetch the next cache line of mbuf pointers and flags */
|
|
prefetch(&txq->ift_sds.ifsd_m[next]);
|
|
if (txq->ift_sds.ifsd_map != NULL) {
|
|
prefetch(&txq->ift_sds.ifsd_map[next]);
|
|
next = (cidx + CACHE_LINE_SIZE) & (ntxd-1);
|
|
prefetch(&txq->ift_sds.ifsd_flags[next]);
|
|
}
|
|
} else if (txq->ift_sds.ifsd_map != NULL)
|
|
map = txq->ift_sds.ifsd_map[pidx];
|
|
|
|
if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
|
|
desc_tag = txq->ift_tso_desc_tag;
|
|
max_segs = scctx->isc_tx_tso_segments_max;
|
|
} else {
|
|
desc_tag = txq->ift_desc_tag;
|
|
max_segs = scctx->isc_tx_nsegments;
|
|
}
|
|
m_head = *m_headp;
|
|
|
|
pkt_info_zero(&pi);
|
|
pi.ipi_len = m_head->m_pkthdr.len;
|
|
pi.ipi_mflags = (m_head->m_flags & (M_VLANTAG|M_BCAST|M_MCAST));
|
|
pi.ipi_csum_flags = m_head->m_pkthdr.csum_flags;
|
|
pi.ipi_vtag = (m_head->m_flags & M_VLANTAG) ? m_head->m_pkthdr.ether_vtag : 0;
|
|
pi.ipi_pidx = pidx;
|
|
pi.ipi_qsidx = txq->ift_id;
|
|
|
|
/* deliberate bitwise OR to make one condition */
|
|
if (__predict_true((pi.ipi_csum_flags | pi.ipi_vtag))) {
|
|
if (__predict_false((err = iflib_parse_header(txq, &pi, m_headp)) != 0))
|
|
return (err);
|
|
m_head = *m_headp;
|
|
}
|
|
|
|
retry:
|
|
err = iflib_busdma_load_mbuf_sg(txq, desc_tag, map, m_headp, segs, &nsegs, max_segs, BUS_DMA_NOWAIT);
|
|
defrag:
|
|
if (__predict_false(err)) {
|
|
switch (err) {
|
|
case EFBIG:
|
|
/* try collapse once and defrag once */
|
|
if (remap == 0)
|
|
m_head = m_collapse(*m_headp, M_NOWAIT, max_segs);
|
|
if (remap == 1)
|
|
m_head = m_defrag(*m_headp, M_NOWAIT);
|
|
remap++;
|
|
if (__predict_false(m_head == NULL))
|
|
goto defrag_failed;
|
|
txq->ift_mbuf_defrag++;
|
|
*m_headp = m_head;
|
|
goto retry;
|
|
break;
|
|
case ENOMEM:
|
|
txq->ift_no_tx_dma_setup++;
|
|
break;
|
|
default:
|
|
txq->ift_no_tx_dma_setup++;
|
|
m_freem(*m_headp);
|
|
DBG_COUNTER_INC(tx_frees);
|
|
*m_headp = NULL;
|
|
break;
|
|
}
|
|
txq->ift_map_failed++;
|
|
DBG_COUNTER_INC(encap_load_mbuf_fail);
|
|
return (err);
|
|
}
|
|
|
|
/*
|
|
* XXX assumes a 1 to 1 relationship between segments and
|
|
* descriptors - this does not hold true on all drivers, e.g.
|
|
* cxgb
|
|
*/
|
|
if (__predict_false(nsegs + 2 > TXQ_AVAIL(txq))) {
|
|
txq->ift_no_desc_avail++;
|
|
if (map != NULL)
|
|
bus_dmamap_unload(desc_tag, map);
|
|
DBG_COUNTER_INC(encap_txq_avail_fail);
|
|
if ((txq->ift_task.gt_task.ta_flags & TASK_ENQUEUED) == 0)
|
|
GROUPTASK_ENQUEUE(&txq->ift_task);
|
|
return (ENOBUFS);
|
|
}
|
|
/*
|
|
* On Intel cards we can greatly reduce the number of TX interrupts
|
|
* we see by only setting report status on every Nth descriptor.
|
|
* However, this also means that the driver will need to keep track
|
|
* of the descriptors that RS was set on to check them for the DD bit.
|
|
*/
|
|
txq->ift_rs_pending += nsegs + 1;
|
|
if (txq->ift_rs_pending > TXQ_MAX_RS_DEFERRED(txq) ||
|
|
iflib_no_tx_batch || (TXQ_AVAIL(txq) - nsegs - 1) <= MAX_TX_DESC(ctx)) {
|
|
pi.ipi_flags |= IPI_TX_INTR;
|
|
txq->ift_rs_pending = 0;
|
|
}
|
|
|
|
pi.ipi_segs = segs;
|
|
pi.ipi_nsegs = nsegs;
|
|
|
|
MPASS(pidx >= 0 && pidx < txq->ift_size);
|
|
#ifdef PKT_DEBUG
|
|
print_pkt(&pi);
|
|
#endif
|
|
if (map != NULL)
|
|
bus_dmamap_sync(desc_tag, map, BUS_DMASYNC_PREWRITE);
|
|
if ((err = ctx->isc_txd_encap(ctx->ifc_softc, &pi)) == 0) {
|
|
if (map != NULL)
|
|
bus_dmamap_sync(txq->ift_ifdi->idi_tag, txq->ift_ifdi->idi_map,
|
|
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
|
|
DBG_COUNTER_INC(tx_encap);
|
|
MPASS(pi.ipi_new_pidx < txq->ift_size);
|
|
|
|
ndesc = pi.ipi_new_pidx - pi.ipi_pidx;
|
|
if (pi.ipi_new_pidx < pi.ipi_pidx) {
|
|
ndesc += txq->ift_size;
|
|
txq->ift_gen = 1;
|
|
}
|
|
/*
|
|
* drivers can need as many as
|
|
* two sentinels
|
|
*/
|
|
MPASS(ndesc <= pi.ipi_nsegs + 2);
|
|
MPASS(pi.ipi_new_pidx != pidx);
|
|
MPASS(ndesc > 0);
|
|
txq->ift_in_use += ndesc;
|
|
|
|
/*
|
|
* We update the last software descriptor again here because there may
|
|
* be a sentinel and/or there may be more mbufs than segments
|
|
*/
|
|
txq->ift_pidx = pi.ipi_new_pidx;
|
|
txq->ift_npending += pi.ipi_ndescs;
|
|
} else if (__predict_false(err == EFBIG && remap < 2)) {
|
|
*m_headp = m_head = iflib_remove_mbuf(txq);
|
|
remap = 1;
|
|
txq->ift_txd_encap_efbig++;
|
|
goto defrag;
|
|
} else
|
|
DBG_COUNTER_INC(encap_txd_encap_fail);
|
|
return (err);
|
|
|
|
defrag_failed:
|
|
txq->ift_mbuf_defrag_failed++;
|
|
txq->ift_map_failed++;
|
|
m_freem(*m_headp);
|
|
DBG_COUNTER_INC(tx_frees);
|
|
*m_headp = NULL;
|
|
return (ENOMEM);
|
|
}
|
|
|
|
static void
|
|
iflib_tx_desc_free(iflib_txq_t txq, int n)
|
|
{
|
|
int hasmap;
|
|
uint32_t qsize, cidx, mask, gen;
|
|
struct mbuf *m, **ifsd_m;
|
|
uint8_t *ifsd_flags;
|
|
bus_dmamap_t *ifsd_map;
|
|
bool do_prefetch;
|
|
|
|
cidx = txq->ift_cidx;
|
|
gen = txq->ift_gen;
|
|
qsize = txq->ift_size;
|
|
mask = qsize-1;
|
|
hasmap = txq->ift_sds.ifsd_map != NULL;
|
|
ifsd_flags = txq->ift_sds.ifsd_flags;
|
|
ifsd_m = txq->ift_sds.ifsd_m;
|
|
ifsd_map = txq->ift_sds.ifsd_map;
|
|
do_prefetch = (txq->ift_ctx->ifc_flags & IFC_PREFETCH);
|
|
|
|
while (n--) {
|
|
if (do_prefetch) {
|
|
prefetch(ifsd_m[(cidx + 3) & mask]);
|
|
prefetch(ifsd_m[(cidx + 4) & mask]);
|
|
}
|
|
if (ifsd_m[cidx] != NULL) {
|
|
prefetch(&ifsd_m[(cidx + CACHE_PTR_INCREMENT) & mask]);
|
|
prefetch(&ifsd_flags[(cidx + CACHE_PTR_INCREMENT) & mask]);
|
|
if (hasmap && (ifsd_flags[cidx] & TX_SW_DESC_MAPPED)) {
|
|
/*
|
|
* does it matter if it's not the TSO tag? If so we'll
|
|
* have to add the type to flags
|
|
*/
|
|
bus_dmamap_unload(txq->ift_desc_tag, ifsd_map[cidx]);
|
|
ifsd_flags[cidx] &= ~TX_SW_DESC_MAPPED;
|
|
}
|
|
if ((m = ifsd_m[cidx]) != NULL) {
|
|
/* XXX we don't support any drivers that batch packets yet */
|
|
MPASS(m->m_nextpkt == NULL);
|
|
|
|
m_free(m);
|
|
ifsd_m[cidx] = NULL;
|
|
#if MEMORY_LOGGING
|
|
txq->ift_dequeued++;
|
|
#endif
|
|
DBG_COUNTER_INC(tx_frees);
|
|
}
|
|
}
|
|
if (__predict_false(++cidx == qsize)) {
|
|
cidx = 0;
|
|
gen = 0;
|
|
}
|
|
}
|
|
txq->ift_cidx = cidx;
|
|
txq->ift_gen = gen;
|
|
}
|
|
|
|
static __inline int
|
|
iflib_completed_tx_reclaim(iflib_txq_t txq, int thresh)
|
|
{
|
|
int reclaim;
|
|
if_ctx_t ctx = txq->ift_ctx;
|
|
|
|
KASSERT(thresh >= 0, ("invalid threshold to reclaim"));
|
|
MPASS(thresh /*+ MAX_TX_DESC(txq->ift_ctx) */ < txq->ift_size);
|
|
|
|
/*
|
|
* Need a rate-limiting check so that this isn't called every time
|
|
*/
|
|
iflib_tx_credits_update(ctx, txq);
|
|
reclaim = DESC_RECLAIMABLE(txq);
|
|
|
|
if (reclaim <= thresh /* + MAX_TX_DESC(txq->ift_ctx) */) {
|
|
#ifdef INVARIANTS
|
|
if (iflib_verbose_debug) {
|
|
printf("%s processed=%ju cleaned=%ju tx_nsegments=%d reclaim=%d thresh=%d\n", __FUNCTION__,
|
|
txq->ift_processed, txq->ift_cleaned, txq->ift_ctx->ifc_softc_ctx.isc_tx_nsegments,
|
|
reclaim, thresh);
|
|
|
|
}
|
|
#endif
|
|
return (0);
|
|
}
|
|
iflib_tx_desc_free(txq, reclaim);
|
|
txq->ift_cleaned += reclaim;
|
|
txq->ift_in_use -= reclaim;
|
|
|
|
return (reclaim);
|
|
}
|
|
|
|
static struct mbuf **
|
|
_ring_peek_one(struct ifmp_ring *r, int cidx, int offset, int remaining)
|
|
{
|
|
int next, size;
|
|
struct mbuf **items;
|
|
|
|
size = r->size;
|
|
next = (cidx + CACHE_PTR_INCREMENT) & (size-1);
|
|
items = __DEVOLATILE(struct mbuf **, &r->items[0]);
|
|
|
|
prefetch(items[(cidx + offset) & (size-1)]);
|
|
if (remaining > 1) {
|
|
prefetch(&items[next]);
|
|
prefetch(items[(cidx + offset + 1) & (size-1)]);
|
|
prefetch(items[(cidx + offset + 2) & (size-1)]);
|
|
prefetch(items[(cidx + offset + 3) & (size-1)]);
|
|
}
|
|
return (__DEVOLATILE(struct mbuf **, &r->items[(cidx + offset) & (size-1)]));
|
|
}
|
|
|
|
static void
|
|
iflib_txq_check_drain(iflib_txq_t txq, int budget)
|
|
{
|
|
|
|
ifmp_ring_check_drainage(txq->ift_br, budget);
|
|
}
|
|
|
|
static uint32_t
|
|
iflib_txq_can_drain(struct ifmp_ring *r)
|
|
{
|
|
iflib_txq_t txq = r->cookie;
|
|
if_ctx_t ctx = txq->ift_ctx;
|
|
|
|
return ((TXQ_AVAIL(txq) > MAX_TX_DESC(ctx) + 2) ||
|
|
ctx->isc_txd_credits_update(ctx->ifc_softc, txq->ift_id, false));
|
|
}
|
|
|
|
static uint32_t
|
|
iflib_txq_drain(struct ifmp_ring *r, uint32_t cidx, uint32_t pidx)
|
|
{
|
|
iflib_txq_t txq = r->cookie;
|
|
if_ctx_t ctx = txq->ift_ctx;
|
|
struct ifnet *ifp = ctx->ifc_ifp;
|
|
struct mbuf **mp, *m;
|
|
int i, count, consumed, pkt_sent, bytes_sent, mcast_sent, avail;
|
|
int reclaimed, err, in_use_prev, desc_used;
|
|
bool do_prefetch, ring, rang;
|
|
|
|
if (__predict_false(!(if_getdrvflags(ifp) & IFF_DRV_RUNNING) ||
|
|
!LINK_ACTIVE(ctx))) {
|
|
DBG_COUNTER_INC(txq_drain_notready);
|
|
return (0);
|
|
}
|
|
reclaimed = iflib_completed_tx_reclaim(txq, RECLAIM_THRESH(ctx));
|
|
rang = iflib_txd_db_check(ctx, txq, reclaimed, txq->ift_in_use);
|
|
avail = IDXDIFF(pidx, cidx, r->size);
|
|
if (__predict_false(ctx->ifc_flags & IFC_QFLUSH)) {
|
|
DBG_COUNTER_INC(txq_drain_flushing);
|
|
for (i = 0; i < avail; i++) {
|
|
m_free(r->items[(cidx + i) & (r->size-1)]);
|
|
r->items[(cidx + i) & (r->size-1)] = NULL;
|
|
}
|
|
return (avail);
|
|
}
|
|
|
|
if (__predict_false(if_getdrvflags(ctx->ifc_ifp) & IFF_DRV_OACTIVE)) {
|
|
txq->ift_qstatus = IFLIB_QUEUE_IDLE;
|
|
CALLOUT_LOCK(txq);
|
|
callout_stop(&txq->ift_timer);
|
|
CALLOUT_UNLOCK(txq);
|
|
DBG_COUNTER_INC(txq_drain_oactive);
|
|
return (0);
|
|
}
|
|
if (reclaimed)
|
|
txq->ift_qstatus = IFLIB_QUEUE_IDLE;
|
|
consumed = mcast_sent = bytes_sent = pkt_sent = 0;
|
|
count = MIN(avail, TX_BATCH_SIZE);
|
|
#ifdef INVARIANTS
|
|
if (iflib_verbose_debug)
|
|
printf("%s avail=%d ifc_flags=%x txq_avail=%d ", __FUNCTION__,
|
|
avail, ctx->ifc_flags, TXQ_AVAIL(txq));
|
|
#endif
|
|
do_prefetch = (ctx->ifc_flags & IFC_PREFETCH);
|
|
avail = TXQ_AVAIL(txq);
|
|
for (desc_used = i = 0; i < count && avail > MAX_TX_DESC(ctx) + 2; i++) {
|
|
int pidx_prev, rem = do_prefetch ? count - i : 0;
|
|
|
|
mp = _ring_peek_one(r, cidx, i, rem);
|
|
MPASS(mp != NULL && *mp != NULL);
|
|
if (__predict_false(*mp == (struct mbuf *)txq)) {
|
|
consumed++;
|
|
reclaimed++;
|
|
continue;
|
|
}
|
|
in_use_prev = txq->ift_in_use;
|
|
pidx_prev = txq->ift_pidx;
|
|
err = iflib_encap(txq, mp);
|
|
if (__predict_false(err)) {
|
|
DBG_COUNTER_INC(txq_drain_encapfail);
|
|
/* no room - bail out */
|
|
if (err == ENOBUFS)
|
|
break;
|
|
consumed++;
|
|
DBG_COUNTER_INC(txq_drain_encapfail);
|
|
/* we can't send this packet - skip it */
|
|
continue;
|
|
}
|
|
consumed++;
|
|
pkt_sent++;
|
|
m = *mp;
|
|
DBG_COUNTER_INC(tx_sent);
|
|
bytes_sent += m->m_pkthdr.len;
|
|
mcast_sent += !!(m->m_flags & M_MCAST);
|
|
avail = TXQ_AVAIL(txq);
|
|
|
|
txq->ift_db_pending += (txq->ift_in_use - in_use_prev);
|
|
desc_used += (txq->ift_in_use - in_use_prev);
|
|
ETHER_BPF_MTAP(ifp, m);
|
|
if (__predict_false(!(ifp->if_drv_flags & IFF_DRV_RUNNING)))
|
|
break;
|
|
rang = iflib_txd_db_check(ctx, txq, false, in_use_prev);
|
|
}
|
|
|
|
/* deliberate use of bitwise or to avoid gratuitous short-circuit */
|
|
ring = rang ? false : (iflib_min_tx_latency | err) || (TXQ_AVAIL(txq) < MAX_TX_DESC(ctx));
|
|
iflib_txd_db_check(ctx, txq, ring, txq->ift_in_use);
|
|
if_inc_counter(ifp, IFCOUNTER_OBYTES, bytes_sent);
|
|
if_inc_counter(ifp, IFCOUNTER_OPACKETS, pkt_sent);
|
|
if (mcast_sent)
|
|
if_inc_counter(ifp, IFCOUNTER_OMCASTS, mcast_sent);
|
|
#ifdef INVARIANTS
|
|
if (iflib_verbose_debug)
|
|
printf("consumed=%d\n", consumed);
|
|
#endif
|
|
return (consumed);
|
|
}
|
|
|
|
static uint32_t
|
|
iflib_txq_drain_always(struct ifmp_ring *r)
|
|
{
|
|
return (1);
|
|
}
|
|
|
|
static uint32_t
|
|
iflib_txq_drain_free(struct ifmp_ring *r, uint32_t cidx, uint32_t pidx)
|
|
{
|
|
int i, avail;
|
|
struct mbuf **mp;
|
|
iflib_txq_t txq;
|
|
|
|
txq = r->cookie;
|
|
|
|
txq->ift_qstatus = IFLIB_QUEUE_IDLE;
|
|
CALLOUT_LOCK(txq);
|
|
callout_stop(&txq->ift_timer);
|
|
CALLOUT_UNLOCK(txq);
|
|
|
|
avail = IDXDIFF(pidx, cidx, r->size);
|
|
for (i = 0; i < avail; i++) {
|
|
mp = _ring_peek_one(r, cidx, i, avail - i);
|
|
if (__predict_false(*mp == (struct mbuf *)txq))
|
|
continue;
|
|
m_freem(*mp);
|
|
}
|
|
MPASS(ifmp_ring_is_stalled(r) == 0);
|
|
return (avail);
|
|
}
|
|
|
|
static void
|
|
iflib_ifmp_purge(iflib_txq_t txq)
|
|
{
|
|
struct ifmp_ring *r;
|
|
|
|
r = txq->ift_br;
|
|
r->drain = iflib_txq_drain_free;
|
|
r->can_drain = iflib_txq_drain_always;
|
|
|
|
ifmp_ring_check_drainage(r, r->size);
|
|
|
|
r->drain = iflib_txq_drain;
|
|
r->can_drain = iflib_txq_can_drain;
|
|
}
|
|
|
|
static void
|
|
_task_fn_tx(void *context)
|
|
{
|
|
iflib_txq_t txq = context;
|
|
if_ctx_t ctx = txq->ift_ctx;
|
|
struct ifnet *ifp = ctx->ifc_ifp;
|
|
int rc;
|
|
|
|
#ifdef IFLIB_DIAGNOSTICS
|
|
txq->ift_cpu_exec_count[curcpu]++;
|
|
#endif
|
|
if (!(if_getdrvflags(ctx->ifc_ifp) & IFF_DRV_RUNNING))
|
|
return;
|
|
if ((ifp->if_capenable & IFCAP_NETMAP)) {
|
|
if (ctx->isc_txd_credits_update(ctx->ifc_softc, txq->ift_id, false))
|
|
netmap_tx_irq(ifp, txq->ift_id);
|
|
IFDI_TX_QUEUE_INTR_ENABLE(ctx, txq->ift_id);
|
|
return;
|
|
}
|
|
if (txq->ift_db_pending)
|
|
ifmp_ring_enqueue(txq->ift_br, (void **)&txq, 1, TX_BATCH_SIZE);
|
|
else
|
|
ifmp_ring_check_drainage(txq->ift_br, TX_BATCH_SIZE);
|
|
if (ctx->ifc_flags & IFC_LEGACY)
|
|
IFDI_INTR_ENABLE(ctx);
|
|
else {
|
|
rc = IFDI_TX_QUEUE_INTR_ENABLE(ctx, txq->ift_id);
|
|
KASSERT(rc != ENOTSUP, ("MSI-X support requires queue_intr_enable, but not implemented in driver"));
|
|
}
|
|
}
|
|
|
|
static void
|
|
_task_fn_rx(void *context)
|
|
{
|
|
iflib_rxq_t rxq = context;
|
|
if_ctx_t ctx = rxq->ifr_ctx;
|
|
bool more;
|
|
int rc;
|
|
|
|
#ifdef IFLIB_DIAGNOSTICS
|
|
rxq->ifr_cpu_exec_count[curcpu]++;
|
|
#endif
|
|
DBG_COUNTER_INC(task_fn_rxs);
|
|
if (__predict_false(!(if_getdrvflags(ctx->ifc_ifp) & IFF_DRV_RUNNING)))
|
|
return;
|
|
if ((more = iflib_rxeof(rxq, 16 /* XXX */)) == false) {
|
|
if (ctx->ifc_flags & IFC_LEGACY)
|
|
IFDI_INTR_ENABLE(ctx);
|
|
else {
|
|
DBG_COUNTER_INC(rx_intr_enables);
|
|
rc = IFDI_RX_QUEUE_INTR_ENABLE(ctx, rxq->ifr_id);
|
|
KASSERT(rc != ENOTSUP, ("MSI-X support requires queue_intr_enable, but not implemented in driver"));
|
|
}
|
|
}
|
|
if (__predict_false(!(if_getdrvflags(ctx->ifc_ifp) & IFF_DRV_RUNNING)))
|
|
return;
|
|
if (more)
|
|
GROUPTASK_ENQUEUE(&rxq->ifr_task);
|
|
}
|
|
|
|
static void
|
|
_task_fn_admin(void *context)
|
|
{
|
|
if_ctx_t ctx = context;
|
|
if_softc_ctx_t sctx = &ctx->ifc_softc_ctx;
|
|
iflib_txq_t txq;
|
|
int i;
|
|
|
|
if (!(if_getdrvflags(ctx->ifc_ifp) & IFF_DRV_RUNNING)) {
|
|
if (!(if_getdrvflags(ctx->ifc_ifp) & IFF_DRV_OACTIVE)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
CTX_LOCK(ctx);
|
|
for (txq = ctx->ifc_txqs, i = 0; i < sctx->isc_ntxqsets; i++, txq++) {
|
|
CALLOUT_LOCK(txq);
|
|
callout_stop(&txq->ift_timer);
|
|
CALLOUT_UNLOCK(txq);
|
|
}
|
|
IFDI_UPDATE_ADMIN_STATUS(ctx);
|
|
for (txq = ctx->ifc_txqs, i = 0; i < sctx->isc_ntxqsets; i++, txq++)
|
|
callout_reset_on(&txq->ift_timer, hz/2, iflib_timer, txq, txq->ift_timer.c_cpu);
|
|
IFDI_LINK_INTR_ENABLE(ctx);
|
|
if (ctx->ifc_flags & IFC_DO_RESET) {
|
|
ctx->ifc_flags &= ~IFC_DO_RESET;
|
|
iflib_if_init_locked(ctx);
|
|
}
|
|
CTX_UNLOCK(ctx);
|
|
|
|
if (LINK_ACTIVE(ctx) == 0)
|
|
return;
|
|
for (txq = ctx->ifc_txqs, i = 0; i < sctx->isc_ntxqsets; i++, txq++)
|
|
iflib_txq_check_drain(txq, IFLIB_RESTART_BUDGET);
|
|
}
|
|
|
|
|
|
static void
|
|
_task_fn_iov(void *context)
|
|
{
|
|
if_ctx_t ctx = context;
|
|
|
|
if (!(if_getdrvflags(ctx->ifc_ifp) & IFF_DRV_RUNNING))
|
|
return;
|
|
|
|
CTX_LOCK(ctx);
|
|
IFDI_VFLR_HANDLE(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
|
|
static int
|
|
iflib_sysctl_int_delay(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
int err;
|
|
if_int_delay_info_t info;
|
|
if_ctx_t ctx;
|
|
|
|
info = (if_int_delay_info_t)arg1;
|
|
ctx = info->iidi_ctx;
|
|
info->iidi_req = req;
|
|
info->iidi_oidp = oidp;
|
|
CTX_LOCK(ctx);
|
|
err = IFDI_SYSCTL_INT_DELAY(ctx, info);
|
|
CTX_UNLOCK(ctx);
|
|
return (err);
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* IFNET FUNCTIONS
|
|
*
|
|
**********************************************************************/
|
|
|
|
static void
|
|
iflib_if_init_locked(if_ctx_t ctx)
|
|
{
|
|
iflib_stop(ctx);
|
|
iflib_init_locked(ctx);
|
|
}
|
|
|
|
|
|
static void
|
|
iflib_if_init(void *arg)
|
|
{
|
|
if_ctx_t ctx = arg;
|
|
|
|
CTX_LOCK(ctx);
|
|
iflib_if_init_locked(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
|
|
static int
|
|
iflib_if_transmit(if_t ifp, struct mbuf *m)
|
|
{
|
|
if_ctx_t ctx = if_getsoftc(ifp);
|
|
|
|
iflib_txq_t txq;
|
|
int err, qidx;
|
|
|
|
if (__predict_false((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || !LINK_ACTIVE(ctx))) {
|
|
DBG_COUNTER_INC(tx_frees);
|
|
m_freem(m);
|
|
return (ENOBUFS);
|
|
}
|
|
|
|
MPASS(m->m_nextpkt == NULL);
|
|
qidx = 0;
|
|
if ((NTXQSETS(ctx) > 1) && M_HASHTYPE_GET(m))
|
|
qidx = QIDX(ctx, m);
|
|
/*
|
|
* XXX calculate buf_ring based on flowid (divvy up bits?)
|
|
*/
|
|
txq = &ctx->ifc_txqs[qidx];
|
|
|
|
#ifdef DRIVER_BACKPRESSURE
|
|
if (txq->ift_closed) {
|
|
while (m != NULL) {
|
|
next = m->m_nextpkt;
|
|
m->m_nextpkt = NULL;
|
|
m_freem(m);
|
|
m = next;
|
|
}
|
|
return (ENOBUFS);
|
|
}
|
|
#endif
|
|
#ifdef notyet
|
|
qidx = count = 0;
|
|
mp = marr;
|
|
next = m;
|
|
do {
|
|
count++;
|
|
next = next->m_nextpkt;
|
|
} while (next != NULL);
|
|
|
|
if (count > nitems(marr))
|
|
if ((mp = malloc(count*sizeof(struct mbuf *), M_IFLIB, M_NOWAIT)) == NULL) {
|
|
/* XXX check nextpkt */
|
|
m_freem(m);
|
|
/* XXX simplify for now */
|
|
DBG_COUNTER_INC(tx_frees);
|
|
return (ENOBUFS);
|
|
}
|
|
for (next = m, i = 0; next != NULL; i++) {
|
|
mp[i] = next;
|
|
next = next->m_nextpkt;
|
|
mp[i]->m_nextpkt = NULL;
|
|
}
|
|
#endif
|
|
DBG_COUNTER_INC(tx_seen);
|
|
err = ifmp_ring_enqueue(txq->ift_br, (void **)&m, 1, TX_BATCH_SIZE);
|
|
|
|
if (err) {
|
|
GROUPTASK_ENQUEUE(&txq->ift_task);
|
|
/* support forthcoming later */
|
|
#ifdef DRIVER_BACKPRESSURE
|
|
txq->ift_closed = TRUE;
|
|
#endif
|
|
ifmp_ring_check_drainage(txq->ift_br, TX_BATCH_SIZE);
|
|
m_freem(m);
|
|
} else if (TXQ_AVAIL(txq) < (txq->ift_size >> 1)) {
|
|
GROUPTASK_ENQUEUE(&txq->ift_task);
|
|
}
|
|
|
|
return (err);
|
|
}
|
|
|
|
static void
|
|
iflib_if_qflush(if_t ifp)
|
|
{
|
|
if_ctx_t ctx = if_getsoftc(ifp);
|
|
iflib_txq_t txq = ctx->ifc_txqs;
|
|
int i;
|
|
|
|
CTX_LOCK(ctx);
|
|
ctx->ifc_flags |= IFC_QFLUSH;
|
|
CTX_UNLOCK(ctx);
|
|
for (i = 0; i < NTXQSETS(ctx); i++, txq++)
|
|
while (!(ifmp_ring_is_idle(txq->ift_br) || ifmp_ring_is_stalled(txq->ift_br)))
|
|
iflib_txq_check_drain(txq, 0);
|
|
CTX_LOCK(ctx);
|
|
ctx->ifc_flags &= ~IFC_QFLUSH;
|
|
CTX_UNLOCK(ctx);
|
|
|
|
if_qflush(ifp);
|
|
}
|
|
|
|
|
|
#define IFCAP_FLAGS (IFCAP_TXCSUM_IPV6 | IFCAP_RXCSUM_IPV6 | IFCAP_HWCSUM | IFCAP_LRO | \
|
|
IFCAP_TSO4 | IFCAP_TSO6 | IFCAP_VLAN_HWTAGGING | \
|
|
IFCAP_VLAN_MTU | IFCAP_VLAN_HWFILTER | IFCAP_VLAN_HWTSO)
|
|
|
|
static int
|
|
iflib_if_ioctl(if_t ifp, u_long command, caddr_t data)
|
|
{
|
|
if_ctx_t ctx = if_getsoftc(ifp);
|
|
struct ifreq *ifr = (struct ifreq *)data;
|
|
#if defined(INET) || defined(INET6)
|
|
struct ifaddr *ifa = (struct ifaddr *)data;
|
|
#endif
|
|
bool avoid_reset = FALSE;
|
|
int err = 0, reinit = 0, bits;
|
|
|
|
switch (command) {
|
|
case SIOCSIFADDR:
|
|
#ifdef INET
|
|
if (ifa->ifa_addr->sa_family == AF_INET)
|
|
avoid_reset = TRUE;
|
|
#endif
|
|
#ifdef INET6
|
|
if (ifa->ifa_addr->sa_family == AF_INET6)
|
|
avoid_reset = TRUE;
|
|
#endif
|
|
/*
|
|
** Calling init results in link renegotiation,
|
|
** so we avoid doing it when possible.
|
|
*/
|
|
if (avoid_reset) {
|
|
if_setflagbits(ifp, IFF_UP,0);
|
|
if (!(if_getdrvflags(ifp)& IFF_DRV_RUNNING))
|
|
reinit = 1;
|
|
#ifdef INET
|
|
if (!(if_getflags(ifp) & IFF_NOARP))
|
|
arp_ifinit(ifp, ifa);
|
|
#endif
|
|
} else
|
|
err = ether_ioctl(ifp, command, data);
|
|
break;
|
|
case SIOCSIFMTU:
|
|
CTX_LOCK(ctx);
|
|
if (ifr->ifr_mtu == if_getmtu(ifp)) {
|
|
CTX_UNLOCK(ctx);
|
|
break;
|
|
}
|
|
bits = if_getdrvflags(ifp);
|
|
/* stop the driver and free any clusters before proceeding */
|
|
iflib_stop(ctx);
|
|
|
|
if ((err = IFDI_MTU_SET(ctx, ifr->ifr_mtu)) == 0) {
|
|
if (ifr->ifr_mtu > ctx->ifc_max_fl_buf_size)
|
|
ctx->ifc_flags |= IFC_MULTISEG;
|
|
else
|
|
ctx->ifc_flags &= ~IFC_MULTISEG;
|
|
err = if_setmtu(ifp, ifr->ifr_mtu);
|
|
}
|
|
iflib_init_locked(ctx);
|
|
if_setdrvflags(ifp, bits);
|
|
CTX_UNLOCK(ctx);
|
|
break;
|
|
case SIOCSIFFLAGS:
|
|
CTX_LOCK(ctx);
|
|
if (if_getflags(ifp) & IFF_UP) {
|
|
if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
|
|
if ((if_getflags(ifp) ^ ctx->ifc_if_flags) &
|
|
(IFF_PROMISC | IFF_ALLMULTI)) {
|
|
err = IFDI_PROMISC_SET(ctx, if_getflags(ifp));
|
|
}
|
|
} else
|
|
reinit = 1;
|
|
} else if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
|
|
iflib_stop(ctx);
|
|
}
|
|
ctx->ifc_if_flags = if_getflags(ifp);
|
|
CTX_UNLOCK(ctx);
|
|
break;
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
|
|
CTX_LOCK(ctx);
|
|
IFDI_INTR_DISABLE(ctx);
|
|
IFDI_MULTI_SET(ctx);
|
|
IFDI_INTR_ENABLE(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
break;
|
|
case SIOCSIFMEDIA:
|
|
CTX_LOCK(ctx);
|
|
IFDI_MEDIA_SET(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
/* falls thru */
|
|
case SIOCGIFMEDIA:
|
|
err = ifmedia_ioctl(ifp, ifr, &ctx->ifc_media, command);
|
|
break;
|
|
case SIOCGI2C:
|
|
{
|
|
struct ifi2creq i2c;
|
|
|
|
err = copyin(ifr->ifr_data, &i2c, sizeof(i2c));
|
|
if (err != 0)
|
|
break;
|
|
if (i2c.dev_addr != 0xA0 && i2c.dev_addr != 0xA2) {
|
|
err = EINVAL;
|
|
break;
|
|
}
|
|
if (i2c.len > sizeof(i2c.data)) {
|
|
err = EINVAL;
|
|
break;
|
|
}
|
|
|
|
if ((err = IFDI_I2C_REQ(ctx, &i2c)) == 0)
|
|
err = copyout(&i2c, ifr->ifr_data, sizeof(i2c));
|
|
break;
|
|
}
|
|
case SIOCSIFCAP:
|
|
{
|
|
int mask, setmask;
|
|
|
|
mask = ifr->ifr_reqcap ^ if_getcapenable(ifp);
|
|
setmask = 0;
|
|
#ifdef TCP_OFFLOAD
|
|
setmask |= mask & (IFCAP_TOE4|IFCAP_TOE6);
|
|
#endif
|
|
setmask |= (mask & IFCAP_FLAGS);
|
|
|
|
if (setmask & (IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6))
|
|
setmask |= (IFCAP_RXCSUM | IFCAP_RXCSUM_IPV6);
|
|
if ((mask & IFCAP_WOL) &&
|
|
(if_getcapabilities(ifp) & IFCAP_WOL) != 0)
|
|
setmask |= (mask & (IFCAP_WOL_MCAST|IFCAP_WOL_MAGIC));
|
|
if_vlancap(ifp);
|
|
/*
|
|
* want to ensure that traffic has stopped before we change any of the flags
|
|
*/
|
|
if (setmask) {
|
|
CTX_LOCK(ctx);
|
|
bits = if_getdrvflags(ifp);
|
|
if (bits & IFF_DRV_RUNNING)
|
|
iflib_stop(ctx);
|
|
if_togglecapenable(ifp, setmask);
|
|
if (bits & IFF_DRV_RUNNING)
|
|
iflib_init_locked(ctx);
|
|
if_setdrvflags(ifp, bits);
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
break;
|
|
}
|
|
case SIOCGPRIVATE_0:
|
|
case SIOCSDRVSPEC:
|
|
case SIOCGDRVSPEC:
|
|
CTX_LOCK(ctx);
|
|
err = IFDI_PRIV_IOCTL(ctx, command, data);
|
|
CTX_UNLOCK(ctx);
|
|
break;
|
|
default:
|
|
err = ether_ioctl(ifp, command, data);
|
|
break;
|
|
}
|
|
if (reinit)
|
|
iflib_if_init(ctx);
|
|
return (err);
|
|
}
|
|
|
|
static uint64_t
|
|
iflib_if_get_counter(if_t ifp, ift_counter cnt)
|
|
{
|
|
if_ctx_t ctx = if_getsoftc(ifp);
|
|
|
|
return (IFDI_GET_COUNTER(ctx, cnt));
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* OTHER FUNCTIONS EXPORTED TO THE STACK
|
|
*
|
|
**********************************************************************/
|
|
|
|
static void
|
|
iflib_vlan_register(void *arg, if_t ifp, uint16_t vtag)
|
|
{
|
|
if_ctx_t ctx = if_getsoftc(ifp);
|
|
|
|
if ((void *)ctx != arg)
|
|
return;
|
|
|
|
if ((vtag == 0) || (vtag > 4095))
|
|
return;
|
|
|
|
CTX_LOCK(ctx);
|
|
IFDI_VLAN_REGISTER(ctx, vtag);
|
|
/* Re-init to load the changes */
|
|
if (if_getcapenable(ifp) & IFCAP_VLAN_HWFILTER)
|
|
iflib_init_locked(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
|
|
static void
|
|
iflib_vlan_unregister(void *arg, if_t ifp, uint16_t vtag)
|
|
{
|
|
if_ctx_t ctx = if_getsoftc(ifp);
|
|
|
|
if ((void *)ctx != arg)
|
|
return;
|
|
|
|
if ((vtag == 0) || (vtag > 4095))
|
|
return;
|
|
|
|
CTX_LOCK(ctx);
|
|
IFDI_VLAN_UNREGISTER(ctx, vtag);
|
|
/* Re-init to load the changes */
|
|
if (if_getcapenable(ifp) & IFCAP_VLAN_HWFILTER)
|
|
iflib_init_locked(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
|
|
static void
|
|
iflib_led_func(void *arg, int onoff)
|
|
{
|
|
if_ctx_t ctx = arg;
|
|
|
|
CTX_LOCK(ctx);
|
|
IFDI_LED_FUNC(ctx, onoff);
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* BUS FUNCTION DEFINITIONS
|
|
*
|
|
**********************************************************************/
|
|
|
|
int
|
|
iflib_device_probe(device_t dev)
|
|
{
|
|
pci_vendor_info_t *ent;
|
|
|
|
uint16_t pci_vendor_id, pci_device_id;
|
|
uint16_t pci_subvendor_id, pci_subdevice_id;
|
|
uint16_t pci_rev_id;
|
|
if_shared_ctx_t sctx;
|
|
|
|
if ((sctx = DEVICE_REGISTER(dev)) == NULL || sctx->isc_magic != IFLIB_MAGIC)
|
|
return (ENOTSUP);
|
|
|
|
pci_vendor_id = pci_get_vendor(dev);
|
|
pci_device_id = pci_get_device(dev);
|
|
pci_subvendor_id = pci_get_subvendor(dev);
|
|
pci_subdevice_id = pci_get_subdevice(dev);
|
|
pci_rev_id = pci_get_revid(dev);
|
|
if (sctx->isc_parse_devinfo != NULL)
|
|
sctx->isc_parse_devinfo(&pci_device_id, &pci_subvendor_id, &pci_subdevice_id, &pci_rev_id);
|
|
|
|
ent = sctx->isc_vendor_info;
|
|
while (ent->pvi_vendor_id != 0) {
|
|
if (pci_vendor_id != ent->pvi_vendor_id) {
|
|
ent++;
|
|
continue;
|
|
}
|
|
if ((pci_device_id == ent->pvi_device_id) &&
|
|
((pci_subvendor_id == ent->pvi_subvendor_id) ||
|
|
(ent->pvi_subvendor_id == 0)) &&
|
|
((pci_subdevice_id == ent->pvi_subdevice_id) ||
|
|
(ent->pvi_subdevice_id == 0)) &&
|
|
((pci_rev_id == ent->pvi_rev_id) ||
|
|
(ent->pvi_rev_id == 0))) {
|
|
|
|
device_set_desc_copy(dev, ent->pvi_name);
|
|
/* this needs to be changed to zero if the bus probing code
|
|
* ever stops re-probing on best match because the sctx
|
|
* may have its values over written by register calls
|
|
* in subsequent probes
|
|
*/
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
ent++;
|
|
}
|
|
return (ENXIO);
|
|
}
|
|
|
|
int
|
|
iflib_device_register(device_t dev, void *sc, if_shared_ctx_t sctx, if_ctx_t *ctxp)
|
|
{
|
|
int err, rid, msix, msix_bar;
|
|
if_ctx_t ctx;
|
|
if_t ifp;
|
|
if_softc_ctx_t scctx;
|
|
int i;
|
|
uint16_t main_txq;
|
|
uint16_t main_rxq;
|
|
|
|
|
|
ctx = malloc(sizeof(* ctx), M_IFLIB, M_WAITOK|M_ZERO);
|
|
|
|
if (sc == NULL) {
|
|
sc = malloc(sctx->isc_driver->size, M_IFLIB, M_WAITOK|M_ZERO);
|
|
device_set_softc(dev, ctx);
|
|
ctx->ifc_flags |= IFC_SC_ALLOCATED;
|
|
}
|
|
|
|
ctx->ifc_sctx = sctx;
|
|
ctx->ifc_dev = dev;
|
|
ctx->ifc_softc = sc;
|
|
|
|
if ((err = iflib_register(ctx)) != 0) {
|
|
device_printf(dev, "iflib_register failed %d\n", err);
|
|
return (err);
|
|
}
|
|
iflib_add_device_sysctl_pre(ctx);
|
|
|
|
scctx = &ctx->ifc_softc_ctx;
|
|
ifp = ctx->ifc_ifp;
|
|
|
|
/*
|
|
* XXX sanity check that ntxd & nrxd are a power of 2
|
|
*/
|
|
if (ctx->ifc_sysctl_ntxqs != 0)
|
|
scctx->isc_ntxqsets = ctx->ifc_sysctl_ntxqs;
|
|
if (ctx->ifc_sysctl_nrxqs != 0)
|
|
scctx->isc_nrxqsets = ctx->ifc_sysctl_nrxqs;
|
|
|
|
for (i = 0; i < sctx->isc_ntxqs; i++) {
|
|
if (ctx->ifc_sysctl_ntxds[i] != 0)
|
|
scctx->isc_ntxd[i] = ctx->ifc_sysctl_ntxds[i];
|
|
else
|
|
scctx->isc_ntxd[i] = sctx->isc_ntxd_default[i];
|
|
}
|
|
|
|
for (i = 0; i < sctx->isc_nrxqs; i++) {
|
|
if (ctx->ifc_sysctl_nrxds[i] != 0)
|
|
scctx->isc_nrxd[i] = ctx->ifc_sysctl_nrxds[i];
|
|
else
|
|
scctx->isc_nrxd[i] = sctx->isc_nrxd_default[i];
|
|
}
|
|
|
|
for (i = 0; i < sctx->isc_nrxqs; i++) {
|
|
if (scctx->isc_nrxd[i] < sctx->isc_nrxd_min[i]) {
|
|
device_printf(dev, "nrxd%d: %d less than nrxd_min %d - resetting to min\n",
|
|
i, scctx->isc_nrxd[i], sctx->isc_nrxd_min[i]);
|
|
scctx->isc_nrxd[i] = sctx->isc_nrxd_min[i];
|
|
}
|
|
if (scctx->isc_nrxd[i] > sctx->isc_nrxd_max[i]) {
|
|
device_printf(dev, "nrxd%d: %d greater than nrxd_max %d - resetting to max\n",
|
|
i, scctx->isc_nrxd[i], sctx->isc_nrxd_max[i]);
|
|
scctx->isc_nrxd[i] = sctx->isc_nrxd_max[i];
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < sctx->isc_ntxqs; i++) {
|
|
if (scctx->isc_ntxd[i] < sctx->isc_ntxd_min[i]) {
|
|
device_printf(dev, "ntxd%d: %d less than ntxd_min %d - resetting to min\n",
|
|
i, scctx->isc_ntxd[i], sctx->isc_ntxd_min[i]);
|
|
scctx->isc_ntxd[i] = sctx->isc_ntxd_min[i];
|
|
}
|
|
if (scctx->isc_ntxd[i] > sctx->isc_ntxd_max[i]) {
|
|
device_printf(dev, "ntxd%d: %d greater than ntxd_max %d - resetting to max\n",
|
|
i, scctx->isc_ntxd[i], sctx->isc_ntxd_max[i]);
|
|
scctx->isc_ntxd[i] = sctx->isc_ntxd_max[i];
|
|
}
|
|
}
|
|
|
|
if ((err = IFDI_ATTACH_PRE(ctx)) != 0) {
|
|
device_printf(dev, "IFDI_ATTACH_PRE failed %d\n", err);
|
|
return (err);
|
|
}
|
|
_iflib_pre_assert(scctx);
|
|
ctx->ifc_txrx = *scctx->isc_txrx;
|
|
|
|
#ifdef INVARIANTS
|
|
MPASS(scctx->isc_capenable);
|
|
if (scctx->isc_capenable & IFCAP_TXCSUM)
|
|
MPASS(scctx->isc_tx_csum_flags);
|
|
#endif
|
|
|
|
if_setcapabilities(ifp, scctx->isc_capenable);
|
|
if_setcapenable(ifp, scctx->isc_capenable);
|
|
|
|
if (scctx->isc_ntxqsets == 0 || (scctx->isc_ntxqsets_max && scctx->isc_ntxqsets_max < scctx->isc_ntxqsets))
|
|
scctx->isc_ntxqsets = scctx->isc_ntxqsets_max;
|
|
if (scctx->isc_nrxqsets == 0 || (scctx->isc_nrxqsets_max && scctx->isc_nrxqsets_max < scctx->isc_nrxqsets))
|
|
scctx->isc_nrxqsets = scctx->isc_nrxqsets_max;
|
|
|
|
#ifdef ACPI_DMAR
|
|
if (dmar_get_dma_tag(device_get_parent(dev), dev) != NULL)
|
|
ctx->ifc_flags |= IFC_DMAR;
|
|
#elif !(defined(__i386__) || defined(__amd64__))
|
|
/* set unconditionally for !x86 */
|
|
ctx->ifc_flags |= IFC_DMAR;
|
|
#endif
|
|
|
|
msix_bar = scctx->isc_msix_bar;
|
|
main_txq = (sctx->isc_flags & IFLIB_HAS_TXCQ) ? 1 : 0;
|
|
main_rxq = (sctx->isc_flags & IFLIB_HAS_RXCQ) ? 1 : 0;
|
|
|
|
/* XXX change for per-queue sizes */
|
|
device_printf(dev, "using %d tx descriptors and %d rx descriptors\n",
|
|
scctx->isc_ntxd[main_txq], scctx->isc_nrxd[main_rxq]);
|
|
for (i = 0; i < sctx->isc_nrxqs; i++) {
|
|
if (!powerof2(scctx->isc_nrxd[i])) {
|
|
/* round down instead? */
|
|
device_printf(dev, "# rx descriptors must be a power of 2\n");
|
|
err = EINVAL;
|
|
goto fail;
|
|
}
|
|
}
|
|
for (i = 0; i < sctx->isc_ntxqs; i++) {
|
|
if (!powerof2(scctx->isc_ntxd[i])) {
|
|
device_printf(dev,
|
|
"# tx descriptors must be a power of 2");
|
|
err = EINVAL;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (scctx->isc_tx_nsegments > scctx->isc_ntxd[main_txq] /
|
|
MAX_SINGLE_PACKET_FRACTION)
|
|
scctx->isc_tx_nsegments = max(1, scctx->isc_ntxd[main_txq] /
|
|
MAX_SINGLE_PACKET_FRACTION);
|
|
if (scctx->isc_tx_tso_segments_max > scctx->isc_ntxd[main_txq] /
|
|
MAX_SINGLE_PACKET_FRACTION)
|
|
scctx->isc_tx_tso_segments_max = max(1,
|
|
scctx->isc_ntxd[main_txq] / MAX_SINGLE_PACKET_FRACTION);
|
|
|
|
/*
|
|
* Protect the stack against modern hardware
|
|
*/
|
|
if (scctx->isc_tx_tso_size_max > FREEBSD_TSO_SIZE_MAX)
|
|
scctx->isc_tx_tso_size_max = FREEBSD_TSO_SIZE_MAX;
|
|
|
|
/* TSO parameters - dig these out of the data sheet - simply correspond to tag setup */
|
|
ifp->if_hw_tsomaxsegcount = scctx->isc_tx_tso_segments_max;
|
|
ifp->if_hw_tsomax = scctx->isc_tx_tso_size_max;
|
|
ifp->if_hw_tsomaxsegsize = scctx->isc_tx_tso_segsize_max;
|
|
if (scctx->isc_rss_table_size == 0)
|
|
scctx->isc_rss_table_size = 64;
|
|
scctx->isc_rss_table_mask = scctx->isc_rss_table_size-1;
|
|
|
|
GROUPTASK_INIT(&ctx->ifc_admin_task, 0, _task_fn_admin, ctx);
|
|
/* XXX format name */
|
|
taskqgroup_attach(qgroup_if_config_tqg, &ctx->ifc_admin_task, ctx, -1, "admin");
|
|
/*
|
|
** Now setup MSI or MSI/X, should
|
|
** return us the number of supported
|
|
** vectors. (Will be 1 for MSI)
|
|
*/
|
|
if (sctx->isc_flags & IFLIB_SKIP_MSIX) {
|
|
msix = scctx->isc_vectors;
|
|
} else if (scctx->isc_msix_bar != 0)
|
|
/*
|
|
* The simple fact that isc_msix_bar is not 0 does not mean we
|
|
* we have a good value there that is known to work.
|
|
*/
|
|
msix = iflib_msix_init(ctx);
|
|
else {
|
|
scctx->isc_vectors = 1;
|
|
scctx->isc_ntxqsets = 1;
|
|
scctx->isc_nrxqsets = 1;
|
|
scctx->isc_intr = IFLIB_INTR_LEGACY;
|
|
msix = 0;
|
|
}
|
|
/* Get memory for the station queues */
|
|
if ((err = iflib_queues_alloc(ctx))) {
|
|
device_printf(dev, "Unable to allocate queue memory\n");
|
|
goto fail;
|
|
}
|
|
|
|
if ((err = iflib_qset_structures_setup(ctx))) {
|
|
device_printf(dev, "qset structure setup failed %d\n", err);
|
|
goto fail_queues;
|
|
}
|
|
|
|
/*
|
|
* Group taskqueues aren't properly set up until SMP is started,
|
|
* so we disable interrupts until we can handle them post
|
|
* SI_SUB_SMP.
|
|
*
|
|
* XXX: disabling interrupts doesn't actually work, at least for
|
|
* the non-MSI case. When they occur before SI_SUB_SMP completes,
|
|
* we do null handling and depend on this not causing too large an
|
|
* interrupt storm.
|
|
*/
|
|
IFDI_INTR_DISABLE(ctx);
|
|
if (msix > 1 && (err = IFDI_MSIX_INTR_ASSIGN(ctx, msix)) != 0) {
|
|
device_printf(dev, "IFDI_MSIX_INTR_ASSIGN failed %d\n", err);
|
|
goto fail_intr_free;
|
|
}
|
|
if (msix <= 1) {
|
|
rid = 0;
|
|
if (scctx->isc_intr == IFLIB_INTR_MSI) {
|
|
MPASS(msix == 1);
|
|
rid = 1;
|
|
}
|
|
if ((err = iflib_legacy_setup(ctx, ctx->isc_legacy_intr, ctx->ifc_softc, &rid, "irq0")) != 0) {
|
|
device_printf(dev, "iflib_legacy_setup failed %d\n", err);
|
|
goto fail_intr_free;
|
|
}
|
|
}
|
|
ether_ifattach(ctx->ifc_ifp, ctx->ifc_mac);
|
|
if ((err = IFDI_ATTACH_POST(ctx)) != 0) {
|
|
device_printf(dev, "IFDI_ATTACH_POST failed %d\n", err);
|
|
goto fail_detach;
|
|
}
|
|
if ((err = iflib_netmap_attach(ctx))) {
|
|
device_printf(ctx->ifc_dev, "netmap attach failed: %d\n", err);
|
|
goto fail_detach;
|
|
}
|
|
*ctxp = ctx;
|
|
|
|
if_setgetcounterfn(ctx->ifc_ifp, iflib_if_get_counter);
|
|
iflib_add_device_sysctl_post(ctx);
|
|
ctx->ifc_flags |= IFC_INIT_DONE;
|
|
return (0);
|
|
fail_detach:
|
|
ether_ifdetach(ctx->ifc_ifp);
|
|
fail_intr_free:
|
|
if (scctx->isc_intr == IFLIB_INTR_MSIX || scctx->isc_intr == IFLIB_INTR_MSI)
|
|
pci_release_msi(ctx->ifc_dev);
|
|
fail_queues:
|
|
/* XXX free queues */
|
|
fail:
|
|
IFDI_DETACH(ctx);
|
|
return (err);
|
|
}
|
|
|
|
int
|
|
iflib_device_attach(device_t dev)
|
|
{
|
|
if_ctx_t ctx;
|
|
if_shared_ctx_t sctx;
|
|
|
|
if ((sctx = DEVICE_REGISTER(dev)) == NULL || sctx->isc_magic != IFLIB_MAGIC)
|
|
return (ENOTSUP);
|
|
|
|
pci_enable_busmaster(dev);
|
|
|
|
return (iflib_device_register(dev, NULL, sctx, &ctx));
|
|
}
|
|
|
|
int
|
|
iflib_device_deregister(if_ctx_t ctx)
|
|
{
|
|
if_t ifp = ctx->ifc_ifp;
|
|
iflib_txq_t txq;
|
|
iflib_rxq_t rxq;
|
|
device_t dev = ctx->ifc_dev;
|
|
int i;
|
|
struct taskqgroup *tqg;
|
|
|
|
/* Make sure VLANS are not using driver */
|
|
if (if_vlantrunkinuse(ifp)) {
|
|
device_printf(dev,"Vlan in use, detach first\n");
|
|
return (EBUSY);
|
|
}
|
|
|
|
CTX_LOCK(ctx);
|
|
ctx->ifc_in_detach = 1;
|
|
iflib_stop(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
|
|
/* Unregister VLAN events */
|
|
if (ctx->ifc_vlan_attach_event != NULL)
|
|
EVENTHANDLER_DEREGISTER(vlan_config, ctx->ifc_vlan_attach_event);
|
|
if (ctx->ifc_vlan_detach_event != NULL)
|
|
EVENTHANDLER_DEREGISTER(vlan_unconfig, ctx->ifc_vlan_detach_event);
|
|
|
|
iflib_netmap_detach(ifp);
|
|
ether_ifdetach(ifp);
|
|
/* ether_ifdetach calls if_qflush - lock must be destroy afterwards*/
|
|
CTX_LOCK_DESTROY(ctx);
|
|
if (ctx->ifc_led_dev != NULL)
|
|
led_destroy(ctx->ifc_led_dev);
|
|
/* XXX drain any dependent tasks */
|
|
tqg = qgroup_if_io_tqg;
|
|
for (txq = ctx->ifc_txqs, i = 0; i < NTXQSETS(ctx); i++, txq++) {
|
|
callout_drain(&txq->ift_timer);
|
|
if (txq->ift_task.gt_uniq != NULL)
|
|
taskqgroup_detach(tqg, &txq->ift_task);
|
|
}
|
|
for (i = 0, rxq = ctx->ifc_rxqs; i < NRXQSETS(ctx); i++, rxq++) {
|
|
if (rxq->ifr_task.gt_uniq != NULL)
|
|
taskqgroup_detach(tqg, &rxq->ifr_task);
|
|
}
|
|
tqg = qgroup_if_config_tqg;
|
|
if (ctx->ifc_admin_task.gt_uniq != NULL)
|
|
taskqgroup_detach(tqg, &ctx->ifc_admin_task);
|
|
if (ctx->ifc_vflr_task.gt_uniq != NULL)
|
|
taskqgroup_detach(tqg, &ctx->ifc_vflr_task);
|
|
|
|
IFDI_DETACH(ctx);
|
|
device_set_softc(ctx->ifc_dev, NULL);
|
|
if (ctx->ifc_softc_ctx.isc_intr != IFLIB_INTR_LEGACY) {
|
|
pci_release_msi(dev);
|
|
}
|
|
if (ctx->ifc_softc_ctx.isc_intr != IFLIB_INTR_MSIX) {
|
|
iflib_irq_free(ctx, &ctx->ifc_legacy_irq);
|
|
}
|
|
if (ctx->ifc_msix_mem != NULL) {
|
|
bus_release_resource(ctx->ifc_dev, SYS_RES_MEMORY,
|
|
ctx->ifc_softc_ctx.isc_msix_bar, ctx->ifc_msix_mem);
|
|
ctx->ifc_msix_mem = NULL;
|
|
}
|
|
|
|
bus_generic_detach(dev);
|
|
if_free(ifp);
|
|
|
|
iflib_tx_structures_free(ctx);
|
|
iflib_rx_structures_free(ctx);
|
|
if (ctx->ifc_flags & IFC_SC_ALLOCATED)
|
|
free(ctx->ifc_softc, M_IFLIB);
|
|
free(ctx, M_IFLIB);
|
|
return (0);
|
|
}
|
|
|
|
|
|
int
|
|
iflib_device_detach(device_t dev)
|
|
{
|
|
if_ctx_t ctx = device_get_softc(dev);
|
|
|
|
return (iflib_device_deregister(ctx));
|
|
}
|
|
|
|
int
|
|
iflib_device_suspend(device_t dev)
|
|
{
|
|
if_ctx_t ctx = device_get_softc(dev);
|
|
|
|
CTX_LOCK(ctx);
|
|
IFDI_SUSPEND(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
|
|
return bus_generic_suspend(dev);
|
|
}
|
|
int
|
|
iflib_device_shutdown(device_t dev)
|
|
{
|
|
if_ctx_t ctx = device_get_softc(dev);
|
|
|
|
CTX_LOCK(ctx);
|
|
IFDI_SHUTDOWN(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
|
|
return bus_generic_suspend(dev);
|
|
}
|
|
|
|
|
|
int
|
|
iflib_device_resume(device_t dev)
|
|
{
|
|
if_ctx_t ctx = device_get_softc(dev);
|
|
iflib_txq_t txq = ctx->ifc_txqs;
|
|
|
|
CTX_LOCK(ctx);
|
|
IFDI_RESUME(ctx);
|
|
iflib_init_locked(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
for (int i = 0; i < NTXQSETS(ctx); i++, txq++)
|
|
iflib_txq_check_drain(txq, IFLIB_RESTART_BUDGET);
|
|
|
|
return (bus_generic_resume(dev));
|
|
}
|
|
|
|
int
|
|
iflib_device_iov_init(device_t dev, uint16_t num_vfs, const nvlist_t *params)
|
|
{
|
|
int error;
|
|
if_ctx_t ctx = device_get_softc(dev);
|
|
|
|
CTX_LOCK(ctx);
|
|
error = IFDI_IOV_INIT(ctx, num_vfs, params);
|
|
CTX_UNLOCK(ctx);
|
|
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
iflib_device_iov_uninit(device_t dev)
|
|
{
|
|
if_ctx_t ctx = device_get_softc(dev);
|
|
|
|
CTX_LOCK(ctx);
|
|
IFDI_IOV_UNINIT(ctx);
|
|
CTX_UNLOCK(ctx);
|
|
}
|
|
|
|
int
|
|
iflib_device_iov_add_vf(device_t dev, uint16_t vfnum, const nvlist_t *params)
|
|
{
|
|
int error;
|
|
if_ctx_t ctx = device_get_softc(dev);
|
|
|
|
CTX_LOCK(ctx);
|
|
error = IFDI_IOV_VF_ADD(ctx, vfnum, params);
|
|
CTX_UNLOCK(ctx);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* MODULE FUNCTION DEFINITIONS
|
|
*
|
|
**********************************************************************/
|
|
|
|
/*
|
|
* - Start a fast taskqueue thread for each core
|
|
* - Start a taskqueue for control operations
|
|
*/
|
|
static int
|
|
iflib_module_init(void)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
iflib_module_event_handler(module_t mod, int what, void *arg)
|
|
{
|
|
int err;
|
|
|
|
switch (what) {
|
|
case MOD_LOAD:
|
|
if ((err = iflib_module_init()) != 0)
|
|
return (err);
|
|
break;
|
|
case MOD_UNLOAD:
|
|
return (EBUSY);
|
|
default:
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* PUBLIC FUNCTION DEFINITIONS
|
|
* ordered as in iflib.h
|
|
*
|
|
**********************************************************************/
|
|
|
|
|
|
static void
|
|
_iflib_assert(if_shared_ctx_t sctx)
|
|
{
|
|
MPASS(sctx->isc_tx_maxsize);
|
|
MPASS(sctx->isc_tx_maxsegsize);
|
|
|
|
MPASS(sctx->isc_rx_maxsize);
|
|
MPASS(sctx->isc_rx_nsegments);
|
|
MPASS(sctx->isc_rx_maxsegsize);
|
|
|
|
MPASS(sctx->isc_nrxd_min[0]);
|
|
MPASS(sctx->isc_nrxd_max[0]);
|
|
MPASS(sctx->isc_nrxd_default[0]);
|
|
MPASS(sctx->isc_ntxd_min[0]);
|
|
MPASS(sctx->isc_ntxd_max[0]);
|
|
MPASS(sctx->isc_ntxd_default[0]);
|
|
}
|
|
|
|
static void
|
|
_iflib_pre_assert(if_softc_ctx_t scctx)
|
|
{
|
|
|
|
MPASS(scctx->isc_txrx->ift_txd_encap);
|
|
MPASS(scctx->isc_txrx->ift_txd_flush);
|
|
MPASS(scctx->isc_txrx->ift_txd_credits_update);
|
|
MPASS(scctx->isc_txrx->ift_rxd_available);
|
|
MPASS(scctx->isc_txrx->ift_rxd_pkt_get);
|
|
MPASS(scctx->isc_txrx->ift_rxd_refill);
|
|
MPASS(scctx->isc_txrx->ift_rxd_flush);
|
|
}
|
|
|
|
static int
|
|
iflib_register(if_ctx_t ctx)
|
|
{
|
|
if_shared_ctx_t sctx = ctx->ifc_sctx;
|
|
driver_t *driver = sctx->isc_driver;
|
|
device_t dev = ctx->ifc_dev;
|
|
if_t ifp;
|
|
|
|
_iflib_assert(sctx);
|
|
|
|
CTX_LOCK_INIT(ctx, device_get_nameunit(ctx->ifc_dev));
|
|
|
|
ifp = ctx->ifc_ifp = if_gethandle(IFT_ETHER);
|
|
if (ifp == NULL) {
|
|
device_printf(dev, "can not allocate ifnet structure\n");
|
|
return (ENOMEM);
|
|
}
|
|
|
|
/*
|
|
* Initialize our context's device specific methods
|
|
*/
|
|
kobj_init((kobj_t) ctx, (kobj_class_t) driver);
|
|
kobj_class_compile((kobj_class_t) driver);
|
|
driver->refs++;
|
|
|
|
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
|
|
if_setsoftc(ifp, ctx);
|
|
if_setdev(ifp, dev);
|
|
if_setinitfn(ifp, iflib_if_init);
|
|
if_setioctlfn(ifp, iflib_if_ioctl);
|
|
if_settransmitfn(ifp, iflib_if_transmit);
|
|
if_setqflushfn(ifp, iflib_if_qflush);
|
|
if_setflags(ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
|
|
|
|
ctx->ifc_vlan_attach_event =
|
|
EVENTHANDLER_REGISTER(vlan_config, iflib_vlan_register, ctx,
|
|
EVENTHANDLER_PRI_FIRST);
|
|
ctx->ifc_vlan_detach_event =
|
|
EVENTHANDLER_REGISTER(vlan_unconfig, iflib_vlan_unregister, ctx,
|
|
EVENTHANDLER_PRI_FIRST);
|
|
|
|
ifmedia_init(&ctx->ifc_media, IFM_IMASK,
|
|
iflib_media_change, iflib_media_status);
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
static int
|
|
iflib_queues_alloc(if_ctx_t ctx)
|
|
{
|
|
if_shared_ctx_t sctx = ctx->ifc_sctx;
|
|
if_softc_ctx_t scctx = &ctx->ifc_softc_ctx;
|
|
device_t dev = ctx->ifc_dev;
|
|
int nrxqsets = scctx->isc_nrxqsets;
|
|
int ntxqsets = scctx->isc_ntxqsets;
|
|
iflib_txq_t txq;
|
|
iflib_rxq_t rxq;
|
|
iflib_fl_t fl = NULL;
|
|
int i, j, cpu, err, txconf, rxconf;
|
|
iflib_dma_info_t ifdip;
|
|
uint32_t *rxqsizes = scctx->isc_rxqsizes;
|
|
uint32_t *txqsizes = scctx->isc_txqsizes;
|
|
uint8_t nrxqs = sctx->isc_nrxqs;
|
|
uint8_t ntxqs = sctx->isc_ntxqs;
|
|
int nfree_lists = sctx->isc_nfl ? sctx->isc_nfl : 1;
|
|
caddr_t *vaddrs;
|
|
uint64_t *paddrs;
|
|
struct ifmp_ring **brscp;
|
|
|
|
KASSERT(ntxqs > 0, ("number of queues per qset must be at least 1"));
|
|
KASSERT(nrxqs > 0, ("number of queues per qset must be at least 1"));
|
|
|
|
brscp = NULL;
|
|
txq = NULL;
|
|
rxq = NULL;
|
|
|
|
/* Allocate the TX ring struct memory */
|
|
if (!(txq =
|
|
(iflib_txq_t) malloc(sizeof(struct iflib_txq) *
|
|
ntxqsets, M_IFLIB, M_NOWAIT | M_ZERO))) {
|
|
device_printf(dev, "Unable to allocate TX ring memory\n");
|
|
err = ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
/* Now allocate the RX */
|
|
if (!(rxq =
|
|
(iflib_rxq_t) malloc(sizeof(struct iflib_rxq) *
|
|
nrxqsets, M_IFLIB, M_NOWAIT | M_ZERO))) {
|
|
device_printf(dev, "Unable to allocate RX ring memory\n");
|
|
err = ENOMEM;
|
|
goto rx_fail;
|
|
}
|
|
|
|
ctx->ifc_txqs = txq;
|
|
ctx->ifc_rxqs = rxq;
|
|
|
|
/*
|
|
* XXX handle allocation failure
|
|
*/
|
|
for (txconf = i = 0, cpu = CPU_FIRST(); i < ntxqsets; i++, txconf++, txq++, cpu = CPU_NEXT(cpu)) {
|
|
/* Set up some basics */
|
|
|
|
if ((ifdip = malloc(sizeof(struct iflib_dma_info) * ntxqs, M_IFLIB, M_WAITOK|M_ZERO)) == NULL) {
|
|
device_printf(dev, "failed to allocate iflib_dma_info\n");
|
|
err = ENOMEM;
|
|
goto err_tx_desc;
|
|
}
|
|
txq->ift_ifdi = ifdip;
|
|
for (j = 0; j < ntxqs; j++, ifdip++) {
|
|
if (iflib_dma_alloc(ctx, txqsizes[j], ifdip, BUS_DMA_NOWAIT)) {
|
|
device_printf(dev, "Unable to allocate Descriptor memory\n");
|
|
err = ENOMEM;
|
|
goto err_tx_desc;
|
|
}
|
|
txq->ift_txd_size[j] = scctx->isc_txd_size[j];
|
|
bzero((void *)ifdip->idi_vaddr, txqsizes[j]);
|
|
}
|
|
txq->ift_ctx = ctx;
|
|
txq->ift_id = i;
|
|
if (sctx->isc_flags & IFLIB_HAS_TXCQ) {
|
|
txq->ift_br_offset = 1;
|
|
} else {
|
|
txq->ift_br_offset = 0;
|
|
}
|
|
/* XXX fix this */
|
|
txq->ift_timer.c_cpu = cpu;
|
|
|
|
if (iflib_txsd_alloc(txq)) {
|
|
device_printf(dev, "Critical Failure setting up TX buffers\n");
|
|
err = ENOMEM;
|
|
goto err_tx_desc;
|
|
}
|
|
|
|
/* Initialize the TX lock */
|
|
snprintf(txq->ift_mtx_name, MTX_NAME_LEN, "%s:tx(%d):callout",
|
|
device_get_nameunit(dev), txq->ift_id);
|
|
mtx_init(&txq->ift_mtx, txq->ift_mtx_name, NULL, MTX_DEF);
|
|
callout_init_mtx(&txq->ift_timer, &txq->ift_mtx, 0);
|
|
|
|
snprintf(txq->ift_db_mtx_name, MTX_NAME_LEN, "%s:tx(%d):db",
|
|
device_get_nameunit(dev), txq->ift_id);
|
|
|
|
err = ifmp_ring_alloc(&txq->ift_br, 2048, txq, iflib_txq_drain,
|
|
iflib_txq_can_drain, M_IFLIB, M_WAITOK);
|
|
if (err) {
|
|
/* XXX free any allocated rings */
|
|
device_printf(dev, "Unable to allocate buf_ring\n");
|
|
goto err_tx_desc;
|
|
}
|
|
}
|
|
|
|
for (rxconf = i = 0; i < nrxqsets; i++, rxconf++, rxq++) {
|
|
/* Set up some basics */
|
|
|
|
if ((ifdip = malloc(sizeof(struct iflib_dma_info) * nrxqs, M_IFLIB, M_WAITOK|M_ZERO)) == NULL) {
|
|
device_printf(dev, "failed to allocate iflib_dma_info\n");
|
|
err = ENOMEM;
|
|
goto err_tx_desc;
|
|
}
|
|
|
|
rxq->ifr_ifdi = ifdip;
|
|
/* XXX this needs to be changed if #rx queues != #tx queues */
|
|
rxq->ifr_ntxqirq = 1;
|
|
rxq->ifr_txqid[0] = i;
|
|
for (j = 0; j < nrxqs; j++, ifdip++) {
|
|
if (iflib_dma_alloc(ctx, rxqsizes[j], ifdip, BUS_DMA_NOWAIT)) {
|
|
device_printf(dev, "Unable to allocate Descriptor memory\n");
|
|
err = ENOMEM;
|
|
goto err_tx_desc;
|
|
}
|
|
bzero((void *)ifdip->idi_vaddr, rxqsizes[j]);
|
|
}
|
|
rxq->ifr_ctx = ctx;
|
|
rxq->ifr_id = i;
|
|
if (sctx->isc_flags & IFLIB_HAS_RXCQ) {
|
|
rxq->ifr_fl_offset = 1;
|
|
} else {
|
|
rxq->ifr_fl_offset = 0;
|
|
}
|
|
rxq->ifr_nfl = nfree_lists;
|
|
if (!(fl =
|
|
(iflib_fl_t) malloc(sizeof(struct iflib_fl) * nfree_lists, M_IFLIB, M_NOWAIT | M_ZERO))) {
|
|
device_printf(dev, "Unable to allocate free list memory\n");
|
|
err = ENOMEM;
|
|
goto err_tx_desc;
|
|
}
|
|
rxq->ifr_fl = fl;
|
|
for (j = 0; j < nfree_lists; j++) {
|
|
fl[j].ifl_rxq = rxq;
|
|
fl[j].ifl_id = j;
|
|
fl[j].ifl_ifdi = &rxq->ifr_ifdi[j + rxq->ifr_fl_offset];
|
|
fl[j].ifl_rxd_size = scctx->isc_rxd_size[j];
|
|
}
|
|
/* Allocate receive buffers for the ring*/
|
|
if (iflib_rxsd_alloc(rxq)) {
|
|
device_printf(dev,
|
|
"Critical Failure setting up receive buffers\n");
|
|
err = ENOMEM;
|
|
goto err_rx_desc;
|
|
}
|
|
}
|
|
|
|
/* TXQs */
|
|
vaddrs = malloc(sizeof(caddr_t)*ntxqsets*ntxqs, M_IFLIB, M_WAITOK);
|
|
paddrs = malloc(sizeof(uint64_t)*ntxqsets*ntxqs, M_IFLIB, M_WAITOK);
|
|
for (i = 0; i < ntxqsets; i++) {
|
|
iflib_dma_info_t di = ctx->ifc_txqs[i].ift_ifdi;
|
|
|
|
for (j = 0; j < ntxqs; j++, di++) {
|
|
vaddrs[i*ntxqs + j] = di->idi_vaddr;
|
|
paddrs[i*ntxqs + j] = di->idi_paddr;
|
|
}
|
|
}
|
|
if ((err = IFDI_TX_QUEUES_ALLOC(ctx, vaddrs, paddrs, ntxqs, ntxqsets)) != 0) {
|
|
device_printf(ctx->ifc_dev, "device queue allocation failed\n");
|
|
iflib_tx_structures_free(ctx);
|
|
free(vaddrs, M_IFLIB);
|
|
free(paddrs, M_IFLIB);
|
|
goto err_rx_desc;
|
|
}
|
|
free(vaddrs, M_IFLIB);
|
|
free(paddrs, M_IFLIB);
|
|
|
|
/* RXQs */
|
|
vaddrs = malloc(sizeof(caddr_t)*nrxqsets*nrxqs, M_IFLIB, M_WAITOK);
|
|
paddrs = malloc(sizeof(uint64_t)*nrxqsets*nrxqs, M_IFLIB, M_WAITOK);
|
|
for (i = 0; i < nrxqsets; i++) {
|
|
iflib_dma_info_t di = ctx->ifc_rxqs[i].ifr_ifdi;
|
|
|
|
for (j = 0; j < nrxqs; j++, di++) {
|
|
vaddrs[i*nrxqs + j] = di->idi_vaddr;
|
|
paddrs[i*nrxqs + j] = di->idi_paddr;
|
|
}
|
|
}
|
|
if ((err = IFDI_RX_QUEUES_ALLOC(ctx, vaddrs, paddrs, nrxqs, nrxqsets)) != 0) {
|
|
device_printf(ctx->ifc_dev, "device queue allocation failed\n");
|
|
iflib_tx_structures_free(ctx);
|
|
free(vaddrs, M_IFLIB);
|
|
free(paddrs, M_IFLIB);
|
|
goto err_rx_desc;
|
|
}
|
|
free(vaddrs, M_IFLIB);
|
|
free(paddrs, M_IFLIB);
|
|
|
|
return (0);
|
|
|
|
/* XXX handle allocation failure changes */
|
|
err_rx_desc:
|
|
err_tx_desc:
|
|
if (ctx->ifc_rxqs != NULL)
|
|
free(ctx->ifc_rxqs, M_IFLIB);
|
|
ctx->ifc_rxqs = NULL;
|
|
if (ctx->ifc_txqs != NULL)
|
|
free(ctx->ifc_txqs, M_IFLIB);
|
|
ctx->ifc_txqs = NULL;
|
|
rx_fail:
|
|
if (brscp != NULL)
|
|
free(brscp, M_IFLIB);
|
|
if (rxq != NULL)
|
|
free(rxq, M_IFLIB);
|
|
if (txq != NULL)
|
|
free(txq, M_IFLIB);
|
|
fail:
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
iflib_tx_structures_setup(if_ctx_t ctx)
|
|
{
|
|
iflib_txq_t txq = ctx->ifc_txqs;
|
|
int i;
|
|
|
|
for (i = 0; i < NTXQSETS(ctx); i++, txq++)
|
|
iflib_txq_setup(txq);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
iflib_tx_structures_free(if_ctx_t ctx)
|
|
{
|
|
iflib_txq_t txq = ctx->ifc_txqs;
|
|
int i, j;
|
|
|
|
for (i = 0; i < NTXQSETS(ctx); i++, txq++) {
|
|
iflib_txq_destroy(txq);
|
|
for (j = 0; j < ctx->ifc_nhwtxqs; j++)
|
|
iflib_dma_free(&txq->ift_ifdi[j]);
|
|
}
|
|
free(ctx->ifc_txqs, M_IFLIB);
|
|
ctx->ifc_txqs = NULL;
|
|
IFDI_QUEUES_FREE(ctx);
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Initialize all receive rings.
|
|
*
|
|
**********************************************************************/
|
|
static int
|
|
iflib_rx_structures_setup(if_ctx_t ctx)
|
|
{
|
|
iflib_rxq_t rxq = ctx->ifc_rxqs;
|
|
int q;
|
|
#if defined(INET6) || defined(INET)
|
|
int i, err;
|
|
#endif
|
|
|
|
for (q = 0; q < ctx->ifc_softc_ctx.isc_nrxqsets; q++, rxq++) {
|
|
#if defined(INET6) || defined(INET)
|
|
tcp_lro_free(&rxq->ifr_lc);
|
|
if ((err = tcp_lro_init_args(&rxq->ifr_lc, ctx->ifc_ifp,
|
|
TCP_LRO_ENTRIES, min(1024,
|
|
ctx->ifc_softc_ctx.isc_nrxd[rxq->ifr_fl_offset]))) != 0) {
|
|
device_printf(ctx->ifc_dev, "LRO Initialization failed!\n");
|
|
goto fail;
|
|
}
|
|
rxq->ifr_lro_enabled = TRUE;
|
|
#endif
|
|
IFDI_RXQ_SETUP(ctx, rxq->ifr_id);
|
|
}
|
|
return (0);
|
|
#if defined(INET6) || defined(INET)
|
|
fail:
|
|
/*
|
|
* Free RX software descriptors allocated so far, we will only handle
|
|
* the rings that completed, the failing case will have
|
|
* cleaned up for itself. 'q' failed, so its the terminus.
|
|
*/
|
|
rxq = ctx->ifc_rxqs;
|
|
for (i = 0; i < q; ++i, rxq++) {
|
|
iflib_rx_sds_free(rxq);
|
|
rxq->ifr_cq_gen = rxq->ifr_cq_cidx = rxq->ifr_cq_pidx = 0;
|
|
}
|
|
return (err);
|
|
#endif
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Free all receive rings.
|
|
*
|
|
**********************************************************************/
|
|
static void
|
|
iflib_rx_structures_free(if_ctx_t ctx)
|
|
{
|
|
iflib_rxq_t rxq = ctx->ifc_rxqs;
|
|
|
|
for (int i = 0; i < ctx->ifc_softc_ctx.isc_nrxqsets; i++, rxq++) {
|
|
iflib_rx_sds_free(rxq);
|
|
}
|
|
}
|
|
|
|
static int
|
|
iflib_qset_structures_setup(if_ctx_t ctx)
|
|
{
|
|
int err;
|
|
|
|
if ((err = iflib_tx_structures_setup(ctx)) != 0)
|
|
return (err);
|
|
|
|
if ((err = iflib_rx_structures_setup(ctx)) != 0) {
|
|
device_printf(ctx->ifc_dev, "iflib_rx_structures_setup failed: %d\n", err);
|
|
iflib_tx_structures_free(ctx);
|
|
iflib_rx_structures_free(ctx);
|
|
}
|
|
return (err);
|
|
}
|
|
|
|
int
|
|
iflib_irq_alloc(if_ctx_t ctx, if_irq_t irq, int rid,
|
|
driver_filter_t filter, void *filter_arg, driver_intr_t handler, void *arg, char *name)
|
|
{
|
|
|
|
return (_iflib_irq_alloc(ctx, irq, rid, filter, handler, arg, name));
|
|
}
|
|
|
|
static int
|
|
find_nth(if_ctx_t ctx, cpuset_t *cpus, int qid)
|
|
{
|
|
int i, cpuid, eqid, count;
|
|
|
|
CPU_COPY(&ctx->ifc_cpus, cpus);
|
|
count = CPU_COUNT(&ctx->ifc_cpus);
|
|
eqid = qid % count;
|
|
/* clear up to the qid'th bit */
|
|
for (i = 0; i < eqid; i++) {
|
|
cpuid = CPU_FFS(cpus);
|
|
MPASS(cpuid != 0);
|
|
CPU_CLR(cpuid-1, cpus);
|
|
}
|
|
cpuid = CPU_FFS(cpus);
|
|
MPASS(cpuid != 0);
|
|
return (cpuid-1);
|
|
}
|
|
|
|
int
|
|
iflib_irq_alloc_generic(if_ctx_t ctx, if_irq_t irq, int rid,
|
|
iflib_intr_type_t type, driver_filter_t *filter,
|
|
void *filter_arg, int qid, char *name)
|
|
{
|
|
struct grouptask *gtask;
|
|
struct taskqgroup *tqg;
|
|
iflib_filter_info_t info;
|
|
cpuset_t cpus;
|
|
gtask_fn_t *fn;
|
|
int tqrid, err, cpuid;
|
|
driver_filter_t *intr_fast;
|
|
void *q;
|
|
|
|
info = &ctx->ifc_filter_info;
|
|
tqrid = rid;
|
|
|
|
switch (type) {
|
|
/* XXX merge tx/rx for netmap? */
|
|
case IFLIB_INTR_TX:
|
|
q = &ctx->ifc_txqs[qid];
|
|
info = &ctx->ifc_txqs[qid].ift_filter_info;
|
|
gtask = &ctx->ifc_txqs[qid].ift_task;
|
|
tqg = qgroup_if_io_tqg;
|
|
fn = _task_fn_tx;
|
|
intr_fast = iflib_fast_intr;
|
|
GROUPTASK_INIT(gtask, 0, fn, q);
|
|
break;
|
|
case IFLIB_INTR_RX:
|
|
q = &ctx->ifc_rxqs[qid];
|
|
info = &ctx->ifc_rxqs[qid].ifr_filter_info;
|
|
gtask = &ctx->ifc_rxqs[qid].ifr_task;
|
|
tqg = qgroup_if_io_tqg;
|
|
fn = _task_fn_rx;
|
|
intr_fast = iflib_fast_intr;
|
|
GROUPTASK_INIT(gtask, 0, fn, q);
|
|
break;
|
|
case IFLIB_INTR_RXTX:
|
|
q = &ctx->ifc_rxqs[qid];
|
|
info = &ctx->ifc_rxqs[qid].ifr_filter_info;
|
|
gtask = &ctx->ifc_rxqs[qid].ifr_task;
|
|
tqg = qgroup_if_io_tqg;
|
|
fn = _task_fn_rx;
|
|
intr_fast = iflib_fast_intr_rxtx;
|
|
GROUPTASK_INIT(gtask, 0, fn, q);
|
|
break;
|
|
case IFLIB_INTR_ADMIN:
|
|
q = ctx;
|
|
tqrid = -1;
|
|
info = &ctx->ifc_filter_info;
|
|
gtask = &ctx->ifc_admin_task;
|
|
tqg = qgroup_if_config_tqg;
|
|
fn = _task_fn_admin;
|
|
intr_fast = iflib_fast_intr_ctx;
|
|
break;
|
|
default:
|
|
panic("unknown net intr type");
|
|
}
|
|
|
|
info->ifi_filter = filter;
|
|
info->ifi_filter_arg = filter_arg;
|
|
info->ifi_task = gtask;
|
|
info->ifi_ctx = q;
|
|
|
|
err = _iflib_irq_alloc(ctx, irq, rid, intr_fast, NULL, info, name);
|
|
if (err != 0) {
|
|
device_printf(ctx->ifc_dev, "_iflib_irq_alloc failed %d\n", err);
|
|
return (err);
|
|
}
|
|
if (type == IFLIB_INTR_ADMIN)
|
|
return (0);
|
|
|
|
if (tqrid != -1) {
|
|
cpuid = find_nth(ctx, &cpus, qid);
|
|
taskqgroup_attach_cpu(tqg, gtask, q, cpuid, irq->ii_rid, name);
|
|
} else {
|
|
taskqgroup_attach(tqg, gtask, q, tqrid, name);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
iflib_softirq_alloc_generic(if_ctx_t ctx, int rid, iflib_intr_type_t type, void *arg, int qid, char *name)
|
|
{
|
|
struct grouptask *gtask;
|
|
struct taskqgroup *tqg;
|
|
gtask_fn_t *fn;
|
|
void *q;
|
|
|
|
switch (type) {
|
|
case IFLIB_INTR_TX:
|
|
q = &ctx->ifc_txqs[qid];
|
|
gtask = &ctx->ifc_txqs[qid].ift_task;
|
|
tqg = qgroup_if_io_tqg;
|
|
fn = _task_fn_tx;
|
|
break;
|
|
case IFLIB_INTR_RX:
|
|
q = &ctx->ifc_rxqs[qid];
|
|
gtask = &ctx->ifc_rxqs[qid].ifr_task;
|
|
tqg = qgroup_if_io_tqg;
|
|
fn = _task_fn_rx;
|
|
break;
|
|
case IFLIB_INTR_IOV:
|
|
q = ctx;
|
|
gtask = &ctx->ifc_vflr_task;
|
|
tqg = qgroup_if_config_tqg;
|
|
rid = -1;
|
|
fn = _task_fn_iov;
|
|
break;
|
|
default:
|
|
panic("unknown net intr type");
|
|
}
|
|
GROUPTASK_INIT(gtask, 0, fn, q);
|
|
taskqgroup_attach(tqg, gtask, q, rid, name);
|
|
}
|
|
|
|
void
|
|
iflib_irq_free(if_ctx_t ctx, if_irq_t irq)
|
|
{
|
|
if (irq->ii_tag)
|
|
bus_teardown_intr(ctx->ifc_dev, irq->ii_res, irq->ii_tag);
|
|
|
|
if (irq->ii_res)
|
|
bus_release_resource(ctx->ifc_dev, SYS_RES_IRQ, irq->ii_rid, irq->ii_res);
|
|
}
|
|
|
|
static int
|
|
iflib_legacy_setup(if_ctx_t ctx, driver_filter_t filter, void *filter_arg, int *rid, char *name)
|
|
{
|
|
iflib_txq_t txq = ctx->ifc_txqs;
|
|
iflib_rxq_t rxq = ctx->ifc_rxqs;
|
|
if_irq_t irq = &ctx->ifc_legacy_irq;
|
|
iflib_filter_info_t info;
|
|
struct grouptask *gtask;
|
|
struct taskqgroup *tqg;
|
|
gtask_fn_t *fn;
|
|
int tqrid;
|
|
void *q;
|
|
int err;
|
|
|
|
q = &ctx->ifc_rxqs[0];
|
|
info = &rxq[0].ifr_filter_info;
|
|
gtask = &rxq[0].ifr_task;
|
|
tqg = qgroup_if_io_tqg;
|
|
tqrid = irq->ii_rid = *rid;
|
|
fn = _task_fn_rx;
|
|
|
|
ctx->ifc_flags |= IFC_LEGACY;
|
|
info->ifi_filter = filter;
|
|
info->ifi_filter_arg = filter_arg;
|
|
info->ifi_task = gtask;
|
|
info->ifi_ctx = ctx;
|
|
|
|
/* We allocate a single interrupt resource */
|
|
if ((err = _iflib_irq_alloc(ctx, irq, tqrid, iflib_fast_intr_ctx, NULL, info, name)) != 0)
|
|
return (err);
|
|
GROUPTASK_INIT(gtask, 0, fn, q);
|
|
taskqgroup_attach(tqg, gtask, q, tqrid, name);
|
|
|
|
GROUPTASK_INIT(&txq->ift_task, 0, _task_fn_tx, txq);
|
|
taskqgroup_attach(qgroup_if_io_tqg, &txq->ift_task, txq, tqrid, "tx");
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
iflib_led_create(if_ctx_t ctx)
|
|
{
|
|
|
|
ctx->ifc_led_dev = led_create(iflib_led_func, ctx,
|
|
device_get_nameunit(ctx->ifc_dev));
|
|
}
|
|
|
|
void
|
|
iflib_tx_intr_deferred(if_ctx_t ctx, int txqid)
|
|
{
|
|
|
|
GROUPTASK_ENQUEUE(&ctx->ifc_txqs[txqid].ift_task);
|
|
}
|
|
|
|
void
|
|
iflib_rx_intr_deferred(if_ctx_t ctx, int rxqid)
|
|
{
|
|
|
|
GROUPTASK_ENQUEUE(&ctx->ifc_rxqs[rxqid].ifr_task);
|
|
}
|
|
|
|
void
|
|
iflib_admin_intr_deferred(if_ctx_t ctx)
|
|
{
|
|
#ifdef INVARIANTS
|
|
struct grouptask *gtask;
|
|
|
|
gtask = &ctx->ifc_admin_task;
|
|
MPASS(gtask->gt_taskqueue != NULL);
|
|
#endif
|
|
|
|
GROUPTASK_ENQUEUE(&ctx->ifc_admin_task);
|
|
}
|
|
|
|
void
|
|
iflib_iov_intr_deferred(if_ctx_t ctx)
|
|
{
|
|
|
|
GROUPTASK_ENQUEUE(&ctx->ifc_vflr_task);
|
|
}
|
|
|
|
void
|
|
iflib_io_tqg_attach(struct grouptask *gt, void *uniq, int cpu, char *name)
|
|
{
|
|
|
|
taskqgroup_attach_cpu(qgroup_if_io_tqg, gt, uniq, cpu, -1, name);
|
|
}
|
|
|
|
void
|
|
iflib_config_gtask_init(if_ctx_t ctx, struct grouptask *gtask, gtask_fn_t *fn,
|
|
char *name)
|
|
{
|
|
|
|
GROUPTASK_INIT(gtask, 0, fn, ctx);
|
|
taskqgroup_attach(qgroup_if_config_tqg, gtask, gtask, -1, name);
|
|
}
|
|
|
|
void
|
|
iflib_config_gtask_deinit(struct grouptask *gtask)
|
|
{
|
|
|
|
taskqgroup_detach(qgroup_if_config_tqg, gtask);
|
|
}
|
|
|
|
void
|
|
iflib_link_state_change(if_ctx_t ctx, int link_state, uint64_t baudrate)
|
|
{
|
|
if_t ifp = ctx->ifc_ifp;
|
|
iflib_txq_t txq = ctx->ifc_txqs;
|
|
|
|
if_setbaudrate(ifp, baudrate);
|
|
if (baudrate >= IF_Gbps(10))
|
|
ctx->ifc_flags |= IFC_PREFETCH;
|
|
|
|
/* If link down, disable watchdog */
|
|
if ((ctx->ifc_link_state == LINK_STATE_UP) && (link_state == LINK_STATE_DOWN)) {
|
|
for (int i = 0; i < ctx->ifc_softc_ctx.isc_ntxqsets; i++, txq++)
|
|
txq->ift_qstatus = IFLIB_QUEUE_IDLE;
|
|
}
|
|
ctx->ifc_link_state = link_state;
|
|
if_link_state_change(ifp, link_state);
|
|
}
|
|
|
|
static int
|
|
iflib_tx_credits_update(if_ctx_t ctx, iflib_txq_t txq)
|
|
{
|
|
int credits;
|
|
#ifdef INVARIANTS
|
|
int credits_pre = txq->ift_cidx_processed;
|
|
#endif
|
|
|
|
if (ctx->isc_txd_credits_update == NULL)
|
|
return (0);
|
|
|
|
if ((credits = ctx->isc_txd_credits_update(ctx->ifc_softc, txq->ift_id, true)) == 0)
|
|
return (0);
|
|
|
|
txq->ift_processed += credits;
|
|
txq->ift_cidx_processed += credits;
|
|
|
|
MPASS(credits_pre + credits == txq->ift_cidx_processed);
|
|
if (txq->ift_cidx_processed >= txq->ift_size)
|
|
txq->ift_cidx_processed -= txq->ift_size;
|
|
return (credits);
|
|
}
|
|
|
|
static int
|
|
iflib_rxd_avail(if_ctx_t ctx, iflib_rxq_t rxq, qidx_t cidx, qidx_t budget)
|
|
{
|
|
|
|
return (ctx->isc_rxd_available(ctx->ifc_softc, rxq->ifr_id, cidx,
|
|
budget));
|
|
}
|
|
|
|
void
|
|
iflib_add_int_delay_sysctl(if_ctx_t ctx, const char *name,
|
|
const char *description, if_int_delay_info_t info,
|
|
int offset, int value)
|
|
{
|
|
info->iidi_ctx = ctx;
|
|
info->iidi_offset = offset;
|
|
info->iidi_value = value;
|
|
SYSCTL_ADD_PROC(device_get_sysctl_ctx(ctx->ifc_dev),
|
|
SYSCTL_CHILDREN(device_get_sysctl_tree(ctx->ifc_dev)),
|
|
OID_AUTO, name, CTLTYPE_INT|CTLFLAG_RW,
|
|
info, 0, iflib_sysctl_int_delay, "I", description);
|
|
}
|
|
|
|
struct mtx *
|
|
iflib_ctx_lock_get(if_ctx_t ctx)
|
|
{
|
|
|
|
return (&ctx->ifc_mtx);
|
|
}
|
|
|
|
static int
|
|
iflib_msix_init(if_ctx_t ctx)
|
|
{
|
|
device_t dev = ctx->ifc_dev;
|
|
if_shared_ctx_t sctx = ctx->ifc_sctx;
|
|
if_softc_ctx_t scctx = &ctx->ifc_softc_ctx;
|
|
int vectors, queues, rx_queues, tx_queues, queuemsgs, msgs;
|
|
int iflib_num_tx_queues, iflib_num_rx_queues;
|
|
int err, admincnt, bar;
|
|
|
|
iflib_num_tx_queues = scctx->isc_ntxqsets;
|
|
iflib_num_rx_queues = scctx->isc_nrxqsets;
|
|
|
|
device_printf(dev, "msix_init qsets capped at %d\n", iflib_num_tx_queues);
|
|
|
|
bar = ctx->ifc_softc_ctx.isc_msix_bar;
|
|
admincnt = sctx->isc_admin_intrcnt;
|
|
/* Override by tuneable */
|
|
if (scctx->isc_disable_msix)
|
|
goto msi;
|
|
|
|
/*
|
|
** When used in a virtualized environment
|
|
** PCI BUSMASTER capability may not be set
|
|
** so explicity set it here and rewrite
|
|
** the ENABLE in the MSIX control register
|
|
** at this point to cause the host to
|
|
** successfully initialize us.
|
|
*/
|
|
{
|
|
int msix_ctrl, rid;
|
|
|
|
pci_enable_busmaster(dev);
|
|
rid = 0;
|
|
if (pci_find_cap(dev, PCIY_MSIX, &rid) == 0 && rid != 0) {
|
|
rid += PCIR_MSIX_CTRL;
|
|
msix_ctrl = pci_read_config(dev, rid, 2);
|
|
msix_ctrl |= PCIM_MSIXCTRL_MSIX_ENABLE;
|
|
pci_write_config(dev, rid, msix_ctrl, 2);
|
|
} else {
|
|
device_printf(dev, "PCIY_MSIX capability not found; "
|
|
"or rid %d == 0.\n", rid);
|
|
goto msi;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* bar == -1 => "trust me I know what I'm doing"
|
|
* https://www.youtube.com/watch?v=nnwWKkNau4I
|
|
* Some drivers are for hardware that is so shoddily
|
|
* documented that no one knows which bars are which
|
|
* so the developer has to map all bars. This hack
|
|
* allows shoddy garbage to use msix in this framework.
|
|
*/
|
|
if (bar != -1) {
|
|
ctx->ifc_msix_mem = bus_alloc_resource_any(dev,
|
|
SYS_RES_MEMORY, &bar, RF_ACTIVE);
|
|
if (ctx->ifc_msix_mem == NULL) {
|
|
/* May not be enabled */
|
|
device_printf(dev, "Unable to map MSIX table \n");
|
|
goto msi;
|
|
}
|
|
}
|
|
/* First try MSI/X */
|
|
if ((msgs = pci_msix_count(dev)) == 0) { /* system has msix disabled */
|
|
device_printf(dev, "System has MSIX disabled \n");
|
|
bus_release_resource(dev, SYS_RES_MEMORY,
|
|
bar, ctx->ifc_msix_mem);
|
|
ctx->ifc_msix_mem = NULL;
|
|
goto msi;
|
|
}
|
|
#if IFLIB_DEBUG
|
|
/* use only 1 qset in debug mode */
|
|
queuemsgs = min(msgs - admincnt, 1);
|
|
#else
|
|
queuemsgs = msgs - admincnt;
|
|
#endif
|
|
if (bus_get_cpus(dev, INTR_CPUS, sizeof(ctx->ifc_cpus), &ctx->ifc_cpus) == 0) {
|
|
#ifdef RSS
|
|
queues = imin(queuemsgs, rss_getnumbuckets());
|
|
#else
|
|
queues = queuemsgs;
|
|
#endif
|
|
queues = imin(CPU_COUNT(&ctx->ifc_cpus), queues);
|
|
device_printf(dev, "pxm cpus: %d queue msgs: %d admincnt: %d\n",
|
|
CPU_COUNT(&ctx->ifc_cpus), queuemsgs, admincnt);
|
|
} else {
|
|
device_printf(dev, "Unable to fetch CPU list\n");
|
|
/* Figure out a reasonable auto config value */
|
|
queues = min(queuemsgs, mp_ncpus);
|
|
}
|
|
#ifdef RSS
|
|
/* If we're doing RSS, clamp at the number of RSS buckets */
|
|
if (queues > rss_getnumbuckets())
|
|
queues = rss_getnumbuckets();
|
|
#endif
|
|
if (iflib_num_rx_queues > 0 && iflib_num_rx_queues < queuemsgs - admincnt)
|
|
rx_queues = iflib_num_rx_queues;
|
|
else
|
|
rx_queues = queues;
|
|
/*
|
|
* We want this to be all logical CPUs by default
|
|
*/
|
|
if (iflib_num_tx_queues > 0 && iflib_num_tx_queues < queues)
|
|
tx_queues = iflib_num_tx_queues;
|
|
else
|
|
tx_queues = mp_ncpus;
|
|
|
|
if (ctx->ifc_sysctl_qs_eq_override == 0) {
|
|
#ifdef INVARIANTS
|
|
if (tx_queues != rx_queues)
|
|
device_printf(dev, "queue equality override not set, capping rx_queues at %d and tx_queues at %d\n",
|
|
min(rx_queues, tx_queues), min(rx_queues, tx_queues));
|
|
#endif
|
|
tx_queues = min(rx_queues, tx_queues);
|
|
rx_queues = min(rx_queues, tx_queues);
|
|
}
|
|
|
|
device_printf(dev, "using %d rx queues %d tx queues \n", rx_queues, tx_queues);
|
|
|
|
vectors = rx_queues + admincnt;
|
|
if ((err = pci_alloc_msix(dev, &vectors)) == 0) {
|
|
device_printf(dev,
|
|
"Using MSIX interrupts with %d vectors\n", vectors);
|
|
scctx->isc_vectors = vectors;
|
|
scctx->isc_nrxqsets = rx_queues;
|
|
scctx->isc_ntxqsets = tx_queues;
|
|
scctx->isc_intr = IFLIB_INTR_MSIX;
|
|
|
|
return (vectors);
|
|
} else {
|
|
device_printf(dev, "failed to allocate %d msix vectors, err: %d - using MSI\n", vectors, err);
|
|
}
|
|
msi:
|
|
vectors = pci_msi_count(dev);
|
|
scctx->isc_nrxqsets = 1;
|
|
scctx->isc_ntxqsets = 1;
|
|
scctx->isc_vectors = vectors;
|
|
if (vectors == 1 && pci_alloc_msi(dev, &vectors) == 0) {
|
|
device_printf(dev,"Using an MSI interrupt\n");
|
|
scctx->isc_intr = IFLIB_INTR_MSI;
|
|
} else {
|
|
device_printf(dev,"Using a Legacy interrupt\n");
|
|
scctx->isc_intr = IFLIB_INTR_LEGACY;
|
|
}
|
|
|
|
return (vectors);
|
|
}
|
|
|
|
char * ring_states[] = { "IDLE", "BUSY", "STALLED", "ABDICATED" };
|
|
|
|
static int
|
|
mp_ring_state_handler(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
int rc;
|
|
uint16_t *state = ((uint16_t *)oidp->oid_arg1);
|
|
struct sbuf *sb;
|
|
char *ring_state = "UNKNOWN";
|
|
|
|
/* XXX needed ? */
|
|
rc = sysctl_wire_old_buffer(req, 0);
|
|
MPASS(rc == 0);
|
|
if (rc != 0)
|
|
return (rc);
|
|
sb = sbuf_new_for_sysctl(NULL, NULL, 80, req);
|
|
MPASS(sb != NULL);
|
|
if (sb == NULL)
|
|
return (ENOMEM);
|
|
if (state[3] <= 3)
|
|
ring_state = ring_states[state[3]];
|
|
|
|
sbuf_printf(sb, "pidx_head: %04hd pidx_tail: %04hd cidx: %04hd state: %s",
|
|
state[0], state[1], state[2], ring_state);
|
|
rc = sbuf_finish(sb);
|
|
sbuf_delete(sb);
|
|
return(rc);
|
|
}
|
|
|
|
enum iflib_ndesc_handler {
|
|
IFLIB_NTXD_HANDLER,
|
|
IFLIB_NRXD_HANDLER,
|
|
};
|
|
|
|
static int
|
|
mp_ndesc_handler(SYSCTL_HANDLER_ARGS)
|
|
{
|
|
if_ctx_t ctx = (void *)arg1;
|
|
enum iflib_ndesc_handler type = arg2;
|
|
char buf[256] = {0};
|
|
qidx_t *ndesc;
|
|
char *p, *next;
|
|
int nqs, rc, i;
|
|
|
|
MPASS(type == IFLIB_NTXD_HANDLER || type == IFLIB_NRXD_HANDLER);
|
|
|
|
nqs = 8;
|
|
switch(type) {
|
|
case IFLIB_NTXD_HANDLER:
|
|
ndesc = ctx->ifc_sysctl_ntxds;
|
|
if (ctx->ifc_sctx)
|
|
nqs = ctx->ifc_sctx->isc_ntxqs;
|
|
break;
|
|
case IFLIB_NRXD_HANDLER:
|
|
ndesc = ctx->ifc_sysctl_nrxds;
|
|
if (ctx->ifc_sctx)
|
|
nqs = ctx->ifc_sctx->isc_nrxqs;
|
|
break;
|
|
}
|
|
if (nqs == 0)
|
|
nqs = 8;
|
|
|
|
for (i=0; i<8; i++) {
|
|
if (i >= nqs)
|
|
break;
|
|
if (i)
|
|
strcat(buf, ",");
|
|
sprintf(strchr(buf, 0), "%d", ndesc[i]);
|
|
}
|
|
|
|
rc = sysctl_handle_string(oidp, buf, sizeof(buf), req);
|
|
if (rc || req->newptr == NULL)
|
|
return rc;
|
|
|
|
for (i = 0, next = buf, p = strsep(&next, " ,"); i < 8 && p;
|
|
i++, p = strsep(&next, " ,")) {
|
|
ndesc[i] = strtoul(p, NULL, 10);
|
|
}
|
|
|
|
return(rc);
|
|
}
|
|
|
|
#define NAME_BUFLEN 32
|
|
static void
|
|
iflib_add_device_sysctl_pre(if_ctx_t ctx)
|
|
{
|
|
device_t dev = iflib_get_dev(ctx);
|
|
struct sysctl_oid_list *child, *oid_list;
|
|
struct sysctl_ctx_list *ctx_list;
|
|
struct sysctl_oid *node;
|
|
|
|
ctx_list = device_get_sysctl_ctx(dev);
|
|
child = SYSCTL_CHILDREN(device_get_sysctl_tree(dev));
|
|
ctx->ifc_sysctl_node = node = SYSCTL_ADD_NODE(ctx_list, child, OID_AUTO, "iflib",
|
|
CTLFLAG_RD, NULL, "IFLIB fields");
|
|
oid_list = SYSCTL_CHILDREN(node);
|
|
|
|
SYSCTL_ADD_STRING(ctx_list, oid_list, OID_AUTO, "driver_version",
|
|
CTLFLAG_RD, ctx->ifc_sctx->isc_driver_version, 0,
|
|
"driver version");
|
|
|
|
SYSCTL_ADD_U16(ctx_list, oid_list, OID_AUTO, "override_ntxqs",
|
|
CTLFLAG_RWTUN, &ctx->ifc_sysctl_ntxqs, 0,
|
|
"# of txqs to use, 0 => use default #");
|
|
SYSCTL_ADD_U16(ctx_list, oid_list, OID_AUTO, "override_nrxqs",
|
|
CTLFLAG_RWTUN, &ctx->ifc_sysctl_nrxqs, 0,
|
|
"# of rxqs to use, 0 => use default #");
|
|
SYSCTL_ADD_U16(ctx_list, oid_list, OID_AUTO, "override_qs_enable",
|
|
CTLFLAG_RWTUN, &ctx->ifc_sysctl_qs_eq_override, 0,
|
|
"permit #txq != #rxq");
|
|
SYSCTL_ADD_INT(ctx_list, oid_list, OID_AUTO, "disable_msix",
|
|
CTLFLAG_RWTUN, &ctx->ifc_softc_ctx.isc_disable_msix, 0,
|
|
"disable MSIX (default 0)");
|
|
|
|
/* XXX change for per-queue sizes */
|
|
SYSCTL_ADD_PROC(ctx_list, oid_list, OID_AUTO, "override_ntxds",
|
|
CTLTYPE_STRING|CTLFLAG_RWTUN, ctx, IFLIB_NTXD_HANDLER,
|
|
mp_ndesc_handler, "A",
|
|
"list of # of tx descriptors to use, 0 = use default #");
|
|
SYSCTL_ADD_PROC(ctx_list, oid_list, OID_AUTO, "override_nrxds",
|
|
CTLTYPE_STRING|CTLFLAG_RWTUN, ctx, IFLIB_NRXD_HANDLER,
|
|
mp_ndesc_handler, "A",
|
|
"list of # of rx descriptors to use, 0 = use default #");
|
|
}
|
|
|
|
static void
|
|
iflib_add_device_sysctl_post(if_ctx_t ctx)
|
|
{
|
|
if_shared_ctx_t sctx = ctx->ifc_sctx;
|
|
if_softc_ctx_t scctx = &ctx->ifc_softc_ctx;
|
|
device_t dev = iflib_get_dev(ctx);
|
|
struct sysctl_oid_list *child;
|
|
struct sysctl_ctx_list *ctx_list;
|
|
iflib_fl_t fl;
|
|
iflib_txq_t txq;
|
|
iflib_rxq_t rxq;
|
|
int i, j;
|
|
char namebuf[NAME_BUFLEN];
|
|
char *qfmt;
|
|
struct sysctl_oid *queue_node, *fl_node, *node;
|
|
struct sysctl_oid_list *queue_list, *fl_list;
|
|
ctx_list = device_get_sysctl_ctx(dev);
|
|
|
|
node = ctx->ifc_sysctl_node;
|
|
child = SYSCTL_CHILDREN(node);
|
|
|
|
if (scctx->isc_ntxqsets > 100)
|
|
qfmt = "txq%03d";
|
|
else if (scctx->isc_ntxqsets > 10)
|
|
qfmt = "txq%02d";
|
|
else
|
|
qfmt = "txq%d";
|
|
for (i = 0, txq = ctx->ifc_txqs; i < scctx->isc_ntxqsets; i++, txq++) {
|
|
snprintf(namebuf, NAME_BUFLEN, qfmt, i);
|
|
queue_node = SYSCTL_ADD_NODE(ctx_list, child, OID_AUTO, namebuf,
|
|
CTLFLAG_RD, NULL, "Queue Name");
|
|
queue_list = SYSCTL_CHILDREN(queue_node);
|
|
#if MEMORY_LOGGING
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "txq_dequeued",
|
|
CTLFLAG_RD,
|
|
&txq->ift_dequeued, "total mbufs freed");
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "txq_enqueued",
|
|
CTLFLAG_RD,
|
|
&txq->ift_enqueued, "total mbufs enqueued");
|
|
#endif
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "mbuf_defrag",
|
|
CTLFLAG_RD,
|
|
&txq->ift_mbuf_defrag, "# of times m_defrag was called");
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "m_pullups",
|
|
CTLFLAG_RD,
|
|
&txq->ift_pullups, "# of times m_pullup was called");
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "mbuf_defrag_failed",
|
|
CTLFLAG_RD,
|
|
&txq->ift_mbuf_defrag_failed, "# of times m_defrag failed");
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "no_desc_avail",
|
|
CTLFLAG_RD,
|
|
&txq->ift_no_desc_avail, "# of times no descriptors were available");
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "tx_map_failed",
|
|
CTLFLAG_RD,
|
|
&txq->ift_map_failed, "# of times dma map failed");
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "txd_encap_efbig",
|
|
CTLFLAG_RD,
|
|
&txq->ift_txd_encap_efbig, "# of times txd_encap returned EFBIG");
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "no_tx_dma_setup",
|
|
CTLFLAG_RD,
|
|
&txq->ift_no_tx_dma_setup, "# of times map failed for other than EFBIG");
|
|
SYSCTL_ADD_U16(ctx_list, queue_list, OID_AUTO, "txq_pidx",
|
|
CTLFLAG_RD,
|
|
&txq->ift_pidx, 1, "Producer Index");
|
|
SYSCTL_ADD_U16(ctx_list, queue_list, OID_AUTO, "txq_cidx",
|
|
CTLFLAG_RD,
|
|
&txq->ift_cidx, 1, "Consumer Index");
|
|
SYSCTL_ADD_U16(ctx_list, queue_list, OID_AUTO, "txq_cidx_processed",
|
|
CTLFLAG_RD,
|
|
&txq->ift_cidx_processed, 1, "Consumer Index seen by credit update");
|
|
SYSCTL_ADD_U16(ctx_list, queue_list, OID_AUTO, "txq_in_use",
|
|
CTLFLAG_RD,
|
|
&txq->ift_in_use, 1, "descriptors in use");
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "txq_processed",
|
|
CTLFLAG_RD,
|
|
&txq->ift_processed, "descriptors procesed for clean");
|
|
SYSCTL_ADD_QUAD(ctx_list, queue_list, OID_AUTO, "txq_cleaned",
|
|
CTLFLAG_RD,
|
|
&txq->ift_cleaned, "total cleaned");
|
|
SYSCTL_ADD_PROC(ctx_list, queue_list, OID_AUTO, "ring_state",
|
|
CTLTYPE_STRING | CTLFLAG_RD, __DEVOLATILE(uint64_t *, &txq->ift_br->state),
|
|
0, mp_ring_state_handler, "A", "soft ring state");
|
|
SYSCTL_ADD_COUNTER_U64(ctx_list, queue_list, OID_AUTO, "r_enqueues",
|
|
CTLFLAG_RD, &txq->ift_br->enqueues,
|
|
"# of enqueues to the mp_ring for this queue");
|
|
SYSCTL_ADD_COUNTER_U64(ctx_list, queue_list, OID_AUTO, "r_drops",
|
|
CTLFLAG_RD, &txq->ift_br->drops,
|
|
"# of drops in the mp_ring for this queue");
|
|
SYSCTL_ADD_COUNTER_U64(ctx_list, queue_list, OID_AUTO, "r_starts",
|
|
CTLFLAG_RD, &txq->ift_br->starts,
|
|
"# of normal consumer starts in the mp_ring for this queue");
|
|
SYSCTL_ADD_COUNTER_U64(ctx_list, queue_list, OID_AUTO, "r_stalls",
|
|
CTLFLAG_RD, &txq->ift_br->stalls,
|
|
"# of consumer stalls in the mp_ring for this queue");
|
|
SYSCTL_ADD_COUNTER_U64(ctx_list, queue_list, OID_AUTO, "r_restarts",
|
|
CTLFLAG_RD, &txq->ift_br->restarts,
|
|
"# of consumer restarts in the mp_ring for this queue");
|
|
SYSCTL_ADD_COUNTER_U64(ctx_list, queue_list, OID_AUTO, "r_abdications",
|
|
CTLFLAG_RD, &txq->ift_br->abdications,
|
|
"# of consumer abdications in the mp_ring for this queue");
|
|
}
|
|
|
|
if (scctx->isc_nrxqsets > 100)
|
|
qfmt = "rxq%03d";
|
|
else if (scctx->isc_nrxqsets > 10)
|
|
qfmt = "rxq%02d";
|
|
else
|
|
qfmt = "rxq%d";
|
|
for (i = 0, rxq = ctx->ifc_rxqs; i < scctx->isc_nrxqsets; i++, rxq++) {
|
|
snprintf(namebuf, NAME_BUFLEN, qfmt, i);
|
|
queue_node = SYSCTL_ADD_NODE(ctx_list, child, OID_AUTO, namebuf,
|
|
CTLFLAG_RD, NULL, "Queue Name");
|
|
queue_list = SYSCTL_CHILDREN(queue_node);
|
|
if (sctx->isc_flags & IFLIB_HAS_RXCQ) {
|
|
SYSCTL_ADD_U16(ctx_list, queue_list, OID_AUTO, "rxq_cq_pidx",
|
|
CTLFLAG_RD,
|
|
&rxq->ifr_cq_pidx, 1, "Producer Index");
|
|
SYSCTL_ADD_U16(ctx_list, queue_list, OID_AUTO, "rxq_cq_cidx",
|
|
CTLFLAG_RD,
|
|
&rxq->ifr_cq_cidx, 1, "Consumer Index");
|
|
}
|
|
|
|
for (j = 0, fl = rxq->ifr_fl; j < rxq->ifr_nfl; j++, fl++) {
|
|
snprintf(namebuf, NAME_BUFLEN, "rxq_fl%d", j);
|
|
fl_node = SYSCTL_ADD_NODE(ctx_list, queue_list, OID_AUTO, namebuf,
|
|
CTLFLAG_RD, NULL, "freelist Name");
|
|
fl_list = SYSCTL_CHILDREN(fl_node);
|
|
SYSCTL_ADD_U16(ctx_list, fl_list, OID_AUTO, "pidx",
|
|
CTLFLAG_RD,
|
|
&fl->ifl_pidx, 1, "Producer Index");
|
|
SYSCTL_ADD_U16(ctx_list, fl_list, OID_AUTO, "cidx",
|
|
CTLFLAG_RD,
|
|
&fl->ifl_cidx, 1, "Consumer Index");
|
|
SYSCTL_ADD_U16(ctx_list, fl_list, OID_AUTO, "credits",
|
|
CTLFLAG_RD,
|
|
&fl->ifl_credits, 1, "credits available");
|
|
#if MEMORY_LOGGING
|
|
SYSCTL_ADD_QUAD(ctx_list, fl_list, OID_AUTO, "fl_m_enqueued",
|
|
CTLFLAG_RD,
|
|
&fl->ifl_m_enqueued, "mbufs allocated");
|
|
SYSCTL_ADD_QUAD(ctx_list, fl_list, OID_AUTO, "fl_m_dequeued",
|
|
CTLFLAG_RD,
|
|
&fl->ifl_m_dequeued, "mbufs freed");
|
|
SYSCTL_ADD_QUAD(ctx_list, fl_list, OID_AUTO, "fl_cl_enqueued",
|
|
CTLFLAG_RD,
|
|
&fl->ifl_cl_enqueued, "clusters allocated");
|
|
SYSCTL_ADD_QUAD(ctx_list, fl_list, OID_AUTO, "fl_cl_dequeued",
|
|
CTLFLAG_RD,
|
|
&fl->ifl_cl_dequeued, "clusters freed");
|
|
#endif
|
|
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
#ifndef __NO_STRICT_ALIGNMENT
|
|
static struct mbuf *
|
|
iflib_fixup_rx(struct mbuf *m)
|
|
{
|
|
struct mbuf *n;
|
|
|
|
if (m->m_len <= (MCLBYTES - ETHER_HDR_LEN)) {
|
|
bcopy(m->m_data, m->m_data + ETHER_HDR_LEN, m->m_len);
|
|
m->m_data += ETHER_HDR_LEN;
|
|
n = m;
|
|
} else {
|
|
MGETHDR(n, M_NOWAIT, MT_DATA);
|
|
if (n == NULL) {
|
|
m_freem(m);
|
|
return (NULL);
|
|
}
|
|
bcopy(m->m_data, n->m_data, ETHER_HDR_LEN);
|
|
m->m_data += ETHER_HDR_LEN;
|
|
m->m_len -= ETHER_HDR_LEN;
|
|
n->m_len = ETHER_HDR_LEN;
|
|
M_MOVE_PKTHDR(n, m);
|
|
n->m_next = m;
|
|
}
|
|
return (n);
|
|
}
|
|
#endif
|