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freebsd-dev/sys/net/iflib.h
Sean Bruno 1248952a50 2017 IFLIB updates in preparation for commits to e1000 and ixgbe. 
- iflib - add checksum in place support (mmacy)
- iflib - initialize IP for TSO (going to be needed for e1000) (mmacy)
- iflib - move isc_txrx from shared context to softc context (mmacy)
- iflib - Normalize checks in TXQ drainage. (shurd)
- iflib - Fix queue capping checks (mmacy)
- iflib - Fix invalid assert, em can need 2 sentinels (mmacy)
- iflib - let the driver determine what capabilities are set and what
          tx csum flags are used (mmacy)
- add INVARIANTS debugging hooks to gtaskqueue enqueue (mmacy)
- update bnxt(4) to support the changes to iflib (shurd)

Some other various, sundry updates.  Slightly more verbose changelog:

Submitted by:	mmacy@nextbsd.org
Reviewed by:	shurd
mFC after:
Sponsored by:	LimeLight Networks and Dell EMC Isilon
2017-01-02 00:56:33 +00:00

370 lines
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/*-
* Copyright (c) 2014-2015, Matthew Macy (mmacy@nextbsd.org)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Neither the name of Matthew Macy nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef __IFLIB_H_
#define __IFLIB_H_
#include <sys/kobj.h>
#include <sys/bus.h>
#include <sys/cpuset.h>
#include <machine/bus.h>
#include <sys/bus_dma.h>
#include <sys/nv.h>
#include <sys/gtaskqueue.h>
/*
* Most cards can handle much larger TSO requests
* but the FreeBSD TCP stack will break on larger
* values
*/
#define FREEBSD_TSO_SIZE_MAX 65518
struct iflib_ctx;
typedef struct iflib_ctx *if_ctx_t;
struct if_shared_ctx;
typedef struct if_shared_ctx *if_shared_ctx_t;
struct if_int_delay_info;
typedef struct if_int_delay_info *if_int_delay_info_t;
/*
* File organization:
* - public structures
* - iflib accessors
* - iflib utility functions
* - iflib core functions
*/
typedef struct if_rxd_frag {
uint8_t irf_flid;
uint16_t irf_idx;
uint16_t irf_len;
} *if_rxd_frag_t;
typedef struct if_rxd_info {
/* set by iflib */
uint16_t iri_qsidx; /* qset index */
uint16_t iri_vtag; /* vlan tag - if flag set */
/* XXX redundant with the new irf_len field */
uint16_t iri_len; /* packet length */
uint16_t iri_cidx; /* consumer index of cq */
struct ifnet *iri_ifp; /* some drivers >1 interface per softc */
/* updated by driver */
uint16_t iri_flags; /* mbuf flags for packet */
uint32_t iri_flowid; /* RSS hash for packet */
uint32_t iri_csum_flags; /* m_pkthdr csum flags */
uint32_t iri_csum_data; /* m_pkthdr csum data */
uint8_t iri_nfrags; /* number of fragments in packet */
uint8_t iri_rsstype; /* RSS hash type */
uint8_t iri_pad; /* any padding in the received data */
if_rxd_frag_t iri_frags;
} *if_rxd_info_t;
#define IPI_TX_INTR 0x1 /* send an interrupt when this packet is sent */
#define IPI_TX_IPV4 0x2 /* ethertype IPv4 */
#define IPI_TX_IPV6 0x4 /* ethertype IPv6 */
typedef struct if_pkt_info {
uint32_t ipi_len; /* packet length */
bus_dma_segment_t *ipi_segs; /* physical addresses */
uint16_t ipi_qsidx; /* queue set index */
uint16_t ipi_nsegs; /* number of segments */
uint16_t ipi_ndescs; /* number of descriptors used by encap */
uint16_t ipi_flags; /* iflib per-packet flags */
uint32_t ipi_pidx; /* start pidx for encap */
uint32_t ipi_new_pidx; /* next available pidx post-encap */
/* offload handling */
uint64_t ipi_csum_flags; /* packet checksum flags */
uint16_t ipi_tso_segsz; /* tso segment size */
uint16_t ipi_mflags; /* packet mbuf flags */
uint16_t ipi_vtag; /* VLAN tag */
uint16_t ipi_etype; /* ether header type */
uint8_t ipi_ehdrlen; /* ether header length */
uint8_t ipi_ip_hlen; /* ip header length */
uint8_t ipi_tcp_hlen; /* tcp header length */
uint8_t ipi_tcp_hflags; /* tcp header flags */
uint8_t ipi_ipproto; /* ip protocol */
/* implied padding */
uint32_t ipi_tcp_seq; /* tcp seqno */
uint32_t ipi_tcp_sum; /* tcp csum */
} *if_pkt_info_t;
typedef struct if_irq {
struct resource *ii_res;
int ii_rid;
void *ii_tag;
} *if_irq_t;
struct if_int_delay_info {
if_ctx_t iidi_ctx; /* Back-pointer to the iflib ctx (softc) */
int iidi_offset; /* Register offset to read/write */
int iidi_value; /* Current value in usecs */
struct sysctl_oid *iidi_oidp;
struct sysctl_req *iidi_req;
};
typedef enum {
IFLIB_INTR_LEGACY,
IFLIB_INTR_MSI,
IFLIB_INTR_MSIX
} iflib_intr_mode_t;
/*
* This really belongs in pciio.h or some place more general
* but this is the only consumer for now.
*/
typedef struct pci_vendor_info {
uint32_t pvi_vendor_id;
uint32_t pvi_device_id;
uint32_t pvi_subvendor_id;
uint32_t pvi_subdevice_id;
uint32_t pvi_rev_id;
uint32_t pvi_class_mask;
caddr_t pvi_name;
} pci_vendor_info_t;
#define PVID(vendor, devid, name) {vendor, devid, 0, 0, 0, 0, name}
#define PVID_OEM(vendor, devid, svid, sdevid, revid, name) {vendor, devid, svid, sdevid, revid, 0, name}
#define PVID_END {0, 0, 0, 0, 0, 0, NULL}
typedef struct if_txrx {
int (*ift_txd_encap) (void *, if_pkt_info_t);
void (*ift_txd_flush) (void *, uint16_t, uint32_t);
int (*ift_txd_credits_update) (void *, uint16_t, uint32_t, bool);
int (*ift_rxd_available) (void *, uint16_t qsidx, uint32_t pidx,
int budget);
int (*ift_rxd_pkt_get) (void *, if_rxd_info_t ri);
void (*ift_rxd_refill) (void * , uint16_t qsidx, uint8_t flidx, uint32_t pidx,
uint64_t *paddrs, caddr_t *vaddrs, uint16_t count, uint16_t buf_size);
void (*ift_rxd_flush) (void *, uint16_t qsidx, uint8_t flidx, uint32_t pidx);
int (*ift_legacy_intr) (void *);
} *if_txrx_t;
typedef struct if_softc_ctx {
int isc_vectors;
int isc_nrxqsets;
int isc_ntxqsets;
int isc_msix_bar; /* can be model specific - initialize in attach_pre */
int isc_tx_nsegments; /* can be model specific - initialize in attach_pre */
int isc_ntxd[8];
int isc_nrxd[8];
uint32_t isc_txqsizes[8];
uint32_t isc_rxqsizes[8];
int isc_max_txqsets;
int isc_max_rxqsets;
int isc_tx_tso_segments_max;
int isc_tx_tso_size_max;
int isc_tx_tso_segsize_max;
int isc_tx_csum_flags;
int isc_capenable;
int isc_rss_table_size;
int isc_rss_table_mask;
int isc_nrxqsets_max;
int isc_ntxqsets_max;
iflib_intr_mode_t isc_intr;
uint16_t isc_max_frame_size; /* set at init time by driver */
pci_vendor_info_t isc_vendor_info; /* set by iflib prior to attach_pre */
if_txrx_t isc_txrx;
} *if_softc_ctx_t;
/*
* Initialization values for device
*/
struct if_shared_ctx {
int isc_magic;
driver_t *isc_driver;
int isc_nfl;
int isc_flags;
bus_size_t isc_q_align;
bus_size_t isc_tx_maxsize;
bus_size_t isc_tx_maxsegsize;
bus_size_t isc_rx_maxsize;
bus_size_t isc_rx_maxsegsize;
int isc_rx_nsegments;
int isc_rx_process_limit;
int isc_ntxqs; /* # of tx queues per tx qset - usually 1 */
int isc_nrxqs; /* # of rx queues per rx qset - intel 1, chelsio 2, broadcom 3 */
int isc_admin_intrcnt; /* # of admin/link interrupts */
int isc_tx_reclaim_thresh;
/* fields necessary for probe */
pci_vendor_info_t *isc_vendor_info;
char *isc_driver_version;
/* optional function to transform the read values to match the table*/
void (*isc_parse_devinfo) (uint16_t *device_id, uint16_t *subvendor_id,
uint16_t *subdevice_id, uint16_t *rev_id);
int isc_nrxd_min[8];
int isc_nrxd_default[8];
int isc_nrxd_max[8];
int isc_ntxd_min[8];
int isc_ntxd_default[8];
int isc_ntxd_max[8];
};
typedef struct iflib_dma_info {
bus_addr_t idi_paddr;
caddr_t idi_vaddr;
bus_dma_tag_t idi_tag;
bus_dmamap_t idi_map;
uint32_t idi_size;
} *iflib_dma_info_t;
#define IFLIB_MAGIC 0xCAFEF00D
typedef enum {
IFLIB_INTR_TX,
IFLIB_INTR_RX,
IFLIB_INTR_ADMIN,
IFLIB_INTR_IOV,
} iflib_intr_type_t;
#ifndef ETH_ADDR_LEN
#define ETH_ADDR_LEN 6
#endif
/*
* Interface has a separate command queue for RX
*/
#define IFLIB_HAS_RXCQ 0x01
/*
* Driver has already allocated vectors
*/
#define IFLIB_SKIP_MSIX 0x02
/*
* Interface is a virtual function
*/
#define IFLIB_IS_VF 0x04
/*
* Interface has a separate command queue for TX
*/
#define IFLIB_HAS_TXCQ 0x08
/*
* Interface does checksum in place
*/
#define IFLIB_NEED_SCRATCH 0x10
/*
* Interface doesn't expect in_pseudo for th_sum
*/
#define IFLIB_TSO_INIT_IP 0x20
/*
* field accessors
*/
void *iflib_get_softc(if_ctx_t ctx);
device_t iflib_get_dev(if_ctx_t ctx);
if_t iflib_get_ifp(if_ctx_t ctx);
struct ifmedia *iflib_get_media(if_ctx_t ctx);
if_softc_ctx_t iflib_get_softc_ctx(if_ctx_t ctx);
if_shared_ctx_t iflib_get_sctx(if_ctx_t ctx);
void iflib_set_mac(if_ctx_t ctx, uint8_t mac[ETHER_ADDR_LEN]);
/*
* If the driver can plug cleanly in to newbus use these
*/
int iflib_device_probe(device_t);
int iflib_device_attach(device_t);
int iflib_device_detach(device_t);
int iflib_device_suspend(device_t);
int iflib_device_resume(device_t);
int iflib_device_shutdown(device_t);
int iflib_device_iov_init(device_t, uint16_t, const nvlist_t *);
void iflib_device_iov_uninit(device_t);
int iflib_device_iov_add_vf(device_t, uint16_t, const nvlist_t *);
/*
* If the driver can't plug cleanly in to newbus
* use these
*/
int iflib_device_register(device_t dev, void *softc, if_shared_ctx_t sctx, if_ctx_t *ctxp);
int iflib_device_deregister(if_ctx_t);
int iflib_irq_alloc(if_ctx_t, if_irq_t, int, driver_filter_t, void *filter_arg, driver_intr_t, void *arg, char *name);
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);
void iflib_softirq_alloc_generic(if_ctx_t ctx, int rid, iflib_intr_type_t type, void *arg, int qid, char *name);
void iflib_irq_free(if_ctx_t ctx, if_irq_t irq);
void iflib_io_tqg_attach(struct grouptask *gt, void *uniq, int cpu, char *name);
void iflib_config_gtask_init(if_ctx_t ctx, struct grouptask *gtask,
gtask_fn_t *fn, char *name);
void iflib_config_gtask_deinit(struct grouptask *gtask);
void iflib_tx_intr_deferred(if_ctx_t ctx, int txqid);
void iflib_rx_intr_deferred(if_ctx_t ctx, int rxqid);
void iflib_admin_intr_deferred(if_ctx_t ctx);
void iflib_iov_intr_deferred(if_ctx_t ctx);
void iflib_link_state_change(if_ctx_t ctx, int linkstate, uint64_t baudrate);
int iflib_dma_alloc(if_ctx_t ctx, int size, iflib_dma_info_t dma, int mapflags);
void iflib_dma_free(iflib_dma_info_t dma);
int iflib_dma_alloc_multi(if_ctx_t ctx, int *sizes, iflib_dma_info_t *dmalist, int mapflags, int count);
void iflib_dma_free_multi(iflib_dma_info_t *dmalist, int count);
struct mtx *iflib_ctx_lock_get(if_ctx_t);
struct mtx *iflib_qset_lock_get(if_ctx_t, uint16_t);
void iflib_led_create(if_ctx_t ctx);
void iflib_add_int_delay_sysctl(if_ctx_t, const char *, const char *,
if_int_delay_info_t, int, int);
#endif /* __IFLIB_H_ */
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