/*- * Copyright (c) 2014-2017, Matthew Macy (mmacy@mattmacy.io) * 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. */ #ifndef __IFLIB_H_ #define __IFLIB_H_ #include #include #include #include #include #include /* * The value type for indexing, limits max descriptors * to 65535 can be conditionally redefined to uint32_t * in the future if the need arises. */ typedef uint16_t qidx_t; #define QIDX_INVALID 0xFFFF struct iflib_ctx; typedef struct iflib_ctx *if_ctx_t; struct if_shared_ctx; typedef const 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; qidx_t irf_idx; uint16_t irf_len; } *if_rxd_frag_t; /* bnxt supports 64 with hardware LRO enabled */ #define IFLIB_MAX_RX_SEGS 64 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 */ qidx_t iri_cidx; /* consumer index of cq */ if_t iri_ifp; /* driver may have >1 iface per softc */ /* updated by driver */ if_rxd_frag_t iri_frags; 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_flags; /* mbuf flags for packet */ 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_info_t; typedef struct if_rxd_update { uint64_t *iru_paddrs; qidx_t *iru_idxs; qidx_t iru_pidx; uint16_t iru_qsidx; uint16_t iru_count; uint16_t iru_buf_size; uint8_t iru_flidx; } *if_rxd_update_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 { bus_dma_segment_t *ipi_segs; /* physical addresses */ uint32_t ipi_len; /* packet length */ uint16_t ipi_qsidx; /* queue set index */ qidx_t ipi_nsegs; /* number of segments */ qidx_t ipi_ndescs; /* number of descriptors used by encap */ uint16_t ipi_flags; /* iflib per-packet flags */ qidx_t ipi_pidx; /* start pidx for encap */ qidx_t ipi_new_pidx; /* next available pidx post-encap */ /* offload handling */ 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_ipproto; /* ip protocol */ uint32_t ipi_csum_flags; /* packet checksum flags */ uint16_t ipi_tso_segsz; /* tso segment size */ uint16_t ipi_vtag; /* VLAN tag */ uint16_t ipi_etype; /* ether header type */ uint16_t ipi_tcp_hflags; /* tcp header flags */ uint32_t ipi_tcp_seq; /* tcp seqno */ uint8_t ipi_ip_tos; /* IP ToS field data */ uint8_t ipi_mflags; /* packet mbuf flags */ uint8_t __spare0__; uint8_t __spare1__; } *if_pkt_info_t; typedef struct if_irq { struct resource *ii_res; int __spare0__; 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; const char *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} /* No drivers in tree currently match on anything except vendor:device. */ #define IFLIB_PNP_DESCR "U32:vendor;U32:device;U32:#;U32:#;" \ "U32:#;U32:#;D:#" #define IFLIB_PNP_INFO(b, u, t) \ MODULE_PNP_INFO(IFLIB_PNP_DESCR, b, u, t, nitems(t) - 1) typedef struct if_txrx { int (*ift_txd_encap) (void *, if_pkt_info_t); void (*ift_txd_flush) (void *, uint16_t, qidx_t pidx); int (*ift_txd_credits_update) (void *, uint16_t qsidx, bool clear); int (*ift_rxd_available) (void *, uint16_t qsidx, qidx_t pidx, qidx_t budget); int (*ift_rxd_pkt_get) (void *, if_rxd_info_t ri); void (*ift_rxd_refill) (void * , if_rxd_update_t iru); void (*ift_rxd_flush) (void *, uint16_t qsidx, uint8_t flidx, qidx_t pidx); int (*ift_legacy_intr) (void *); qidx_t (*ift_txq_select) (void *, struct mbuf *); qidx_t (*ift_txq_select_v2) (void *, struct mbuf *, if_pkt_info_t); } *if_txrx_t; typedef struct if_softc_ctx { int isc_vectors; int isc_nrxqsets; int isc_ntxqsets; uint16_t __spare0__; uint32_t __spare1__; 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]; /* is there such thing as a descriptor that is more than 248 bytes ? */ uint8_t isc_txd_size[8]; uint8_t isc_rxd_size[8]; 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_capabilities; int isc_capenable; int isc_rss_table_size; int isc_rss_table_mask; int isc_nrxqsets_max; int isc_ntxqsets_max; uint32_t __spare2__; iflib_intr_mode_t isc_intr; uint16_t isc_rxd_buf_size[8]; /* set at init time by driver, 0 means use iflib-calculated size based on isc_max_frame_size */ uint16_t isc_max_frame_size; /* set at init time by driver */ uint16_t isc_min_frame_size; /* set at init time by driver, only used if IFLIB_NEED_ETHER_PAD is set. */ uint32_t isc_pause_frames; /* set by driver for iflib_timer to detect */ uint32_t __spare3__; uint32_t __spare4__; uint32_t __spare5__; uint32_t __spare6__; uint32_t __spare7__; uint32_t __spare8__; caddr_t __spare9__; int isc_disable_msix; if_txrx_t isc_txrx; struct ifmedia *isc_media; bus_size_t isc_dma_width; /* device dma width in bits, 0 means use BUS_SPACE_MAXADDR instead */ } *if_softc_ctx_t; /* * Initialization values for device */ struct if_shared_ctx { unsigned isc_magic; driver_t *isc_driver; bus_size_t isc_q_align; bus_size_t isc_tx_maxsize; bus_size_t isc_tx_maxsegsize; bus_size_t isc_tso_maxsize; bus_size_t isc_tso_maxsegsize; bus_size_t isc_rx_maxsize; bus_size_t isc_rx_maxsegsize; int isc_rx_nsegments; int isc_admin_intrcnt; /* # of admin/link interrupts */ /* fields necessary for probe */ const pci_vendor_info_t *isc_vendor_info; const 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]; /* actively used during operation */ int isc_nfl __aligned(CACHE_LINE_SIZE); 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 __spare0__; int isc_tx_reclaim_thresh; int isc_flags; }; 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 { /* Interrupt or softirq handles only receive */ IFLIB_INTR_RX, /* Interrupt or softirq handles only transmit */ IFLIB_INTR_TX, /* * Interrupt will check for both pending receive * and available tx credits and dispatch a task * for one or both depending on the disposition * of the respective queues. */ IFLIB_INTR_RXTX, /* * Other interrupt - typically link status and * or error conditions. */ IFLIB_INTR_ADMIN, /* Softirq (task) for iov handling */ IFLIB_INTR_IOV, } iflib_intr_type_t; /* * Interface has a separate completion 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 completion 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 /* * Interface doesn't align IP header */ #define IFLIB_DO_RX_FIXUP 0x40 /* * Driver needs csum zeroed for offloading */ #define IFLIB_NEED_ZERO_CSUM 0x80 /* * Driver needs frames padded to some minimum length */ #define IFLIB_NEED_ETHER_PAD 0x100 #define IFLIB_SPARE7 0x200 #define IFLIB_SPARE6 0x400 #define IFLIB_SPARE5 0x800 #define IFLIB_SPARE4 0x1000 #define IFLIB_SPARE3 0x2000 #define IFLIB_SPARE2 0x4000 #define IFLIB_SPARE1 0x8000 /* * Interface needs admin task to ignore interface up/down status */ #define IFLIB_ADMIN_ALWAYS_RUN 0x10000 /* * Driver will pass the media */ #define IFLIB_DRIVER_MEDIA 0x20000 /* * When using a single hardware interrupt for the interface, only process RX * interrupts instead of doing combined RX/TX processing. */ #define IFLIB_SINGLE_IRQ_RX_ONLY 0x40000 #define IFLIB_SPARE0 0x80000 /* * Interface has an admin completion queue */ #define IFLIB_HAS_ADMINCQ 0x100000 /* * Interface needs to preserve TX ring indices across restarts. */ #define IFLIB_PRESERVE_TX_INDICES 0x200000 /* The following IFLIB_FEATURE_* defines are for driver modules to determine * what features this version of iflib supports. They shall be defined to the * first __FreeBSD_version that introduced the feature. */ /* * Driver can set its own TX queue selection function * as ift_txq_select in struct if_txrx */ #define IFLIB_FEATURE_QUEUE_SELECT 1400050 /* * Driver can set its own TX queue selection function * as ift_txq_select_v2 in struct if_txrx. This includes * having iflib send L3+ extra header information to the * function. */ #define IFLIB_FEATURE_QUEUE_SELECT_V2 1400073 /* * Driver can create subinterfaces with their own Tx/Rx queues * that all share a single device (or commonly, port) */ #define IFLIB_FEATURE_SUB_INTERFACES 1500014 /* * These enum values are used in iflib_needs_restart to indicate to iflib * functions whether or not the interface needs restarting when certain events * happen. */ enum iflib_restart_event { IFLIB_RESTART_VLAN_CONFIG, }; /* * 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]); void iflib_request_reset(if_ctx_t ctx); uint8_t iflib_in_detach(if_ctx_t ctx); uint32_t iflib_get_rx_mbuf_sz(if_ctx_t ctx); /* * 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); /* * Use this instead of iflib_device_probe if the driver should report * BUS_PROBE_VENDOR instead of BUS_PROBE_DEFAULT. (For example, an out-of-tree * driver based on iflib). */ int iflib_device_probe_vendor(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, const 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, const char *name); void iflib_softirq_alloc_generic(if_ctx_t ctx, if_irq_t irq, iflib_intr_type_t type, void *arg, int qid, const 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, const char *name); void iflib_config_gtask_init(void *ctx, struct grouptask *gtask, gtask_fn_t *fn, const 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); int iflib_dma_alloc_align(if_ctx_t ctx, int size, int align, 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 sx *iflib_ctx_lock_get(if_ctx_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); uint16_t iflib_get_extra_msix_vectors_sysctl(if_ctx_t ctx); /* * Sub-interface support */ int iflib_irq_alloc_generic_subctx(if_ctx_t ctx, if_ctx_t subctx, if_irq_t irq, int rid, iflib_intr_type_t type, driver_filter_t *filter, void *filter_arg, int qid, const char *name); #endif /* __IFLIB_H_ */