sys/dev/virtual/amazon/ena/ena.c
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3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 | /*- * BSD LICENSE * * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates. * 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. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 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: head/sys/dev/ena/ena.c 325593 2017-11-09 13:38:17Z mw $ */ #include <sys/param.h> #include <sys/systm.h> #include <sys/bus.h> #include <sys/endian.h> #include <sys/kernel.h> #include <sys/kthread.h> #include <sys/malloc.h> #include <sys/mbuf.h> #include <sys/module.h> #include <sys/rman.h> #include <sys/socket.h> #include <sys/sockio.h> #include <sys/sysctl.h> #include <sys/taskqueue.h> #include <sys/time.h> #include <sys/eventhandler.h> #include <net/bpf.h> #include <net/if.h> #include <net/if_var.h> #include <net/if_arp.h> #include <net/if_dl.h> #include <net/if_media.h> #include <net/if_types.h> #include <net/ifq_var.h> #include <net/vlan/if_vlan_var.h> #include <netinet/in_systm.h> #include <netinet/in.h> #include <netinet/if_ether.h> #include <netinet/ip.h> #include <netinet/ip6.h> #include <netinet/tcp.h> #include <netinet/udp.h> #include <bus/pci/pcivar.h> #include <bus/pci/pcireg.h> #include "ena.h" #include "ena_sysctl.h" /********************************************************* * Function prototypes *********************************************************/ static int ena_probe(device_t); static void ena_intr_msix_mgmnt(void *); static int ena_allocate_pci_resources(struct ena_adapter*); static void ena_free_pci_resources(struct ena_adapter *); static int ena_change_mtu(if_t, int); #if 0 /* XXX swildner counters */ static inline void ena_alloc_counters(counter_u64_t *, int); static inline void ena_free_counters(counter_u64_t *, int); static inline void ena_reset_counters(counter_u64_t *, int); #endif static void ena_init_io_rings_common(struct ena_adapter *, struct ena_ring *, uint16_t); static void ena_init_io_rings(struct ena_adapter *); static void ena_free_io_ring_resources(struct ena_adapter *, unsigned int); static void ena_free_all_io_rings_resources(struct ena_adapter *); static int ena_setup_tx_dma_tag(struct ena_adapter *); static int ena_free_tx_dma_tag(struct ena_adapter *); static int ena_setup_rx_dma_tag(struct ena_adapter *); static int ena_free_rx_dma_tag(struct ena_adapter *); static int ena_setup_tx_resources(struct ena_adapter *, int); static void ena_free_tx_resources(struct ena_adapter *, int); static int ena_setup_all_tx_resources(struct ena_adapter *); static void ena_free_all_tx_resources(struct ena_adapter *); static inline int validate_rx_req_id(struct ena_ring *, uint16_t); static int ena_setup_rx_resources(struct ena_adapter *, unsigned int); static void ena_free_rx_resources(struct ena_adapter *, unsigned int); static int ena_setup_all_rx_resources(struct ena_adapter *); static void ena_free_all_rx_resources(struct ena_adapter *); static inline int ena_alloc_rx_mbuf(struct ena_adapter *, struct ena_ring *, struct ena_rx_buffer *); static void ena_free_rx_mbuf(struct ena_adapter *, struct ena_ring *, struct ena_rx_buffer *); static int ena_refill_rx_bufs(struct ena_ring *, uint32_t); static void ena_free_rx_bufs(struct ena_adapter *, unsigned int); static void ena_refill_all_rx_bufs(struct ena_adapter *); static void ena_free_all_rx_bufs(struct ena_adapter *); static void ena_free_tx_bufs(struct ena_adapter *, unsigned int); static void ena_free_all_tx_bufs(struct ena_adapter *); static void ena_destroy_all_tx_queues(struct ena_adapter *); static void ena_destroy_all_rx_queues(struct ena_adapter *); static void ena_destroy_all_io_queues(struct ena_adapter *); static int ena_create_io_queues(struct ena_adapter *); static int ena_tx_cleanup(struct ena_ring *); static void ena_deferred_rx_cleanup(void *, int); static int ena_rx_cleanup(struct ena_ring *); static inline int validate_tx_req_id(struct ena_ring *, uint16_t); static void ena_rx_hash_mbuf(struct ena_ring *, struct ena_com_rx_ctx *, struct mbuf *); static struct mbuf* ena_rx_mbuf(struct ena_ring *, struct ena_com_rx_buf_info *, struct ena_com_rx_ctx *, uint16_t *); static inline void ena_rx_checksum(struct ena_ring *, struct ena_com_rx_ctx *, struct mbuf *); static void ena_handle_msix(void *); static int ena_enable_msix(struct ena_adapter *); static void ena_setup_mgmnt_intr(struct ena_adapter *); static void ena_setup_io_intr(struct ena_adapter *); static int ena_request_mgmnt_irq(struct ena_adapter *); static int ena_request_io_irq(struct ena_adapter *); static void ena_free_mgmnt_irq(struct ena_adapter *); static void ena_free_io_irq(struct ena_adapter *); static void ena_free_irqs(struct ena_adapter*); static void ena_disable_msix(struct ena_adapter *); static void ena_unmask_all_io_irqs(struct ena_adapter *); static int ena_rss_configure(struct ena_adapter *); static int ena_up_complete(struct ena_adapter *); static int ena_up(struct ena_adapter *); static void ena_down(struct ena_adapter *); #if 0 /* XXX swildner counters */ static uint64_t ena_get_counter(if_t, ift_counter); #endif static int ena_media_change(if_t); static void ena_media_status(if_t, struct ifmediareq *); static void ena_init(void *); static int ena_ioctl(if_t, u_long, caddr_t, struct ucred *); static int ena_get_dev_offloads(struct ena_com_dev_get_features_ctx *); static void ena_update_host_info(struct ena_admin_host_info *, if_t); static void ena_update_hwassist(struct ena_adapter *); static int ena_setup_ifnet(device_t, struct ena_adapter *, struct ena_com_dev_get_features_ctx *); static void ena_tx_csum(struct ena_com_tx_ctx *, struct mbuf *); static int ena_check_and_collapse_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf); static int ena_xmit_mbuf(struct ena_ring *, struct mbuf **); static void ena_start_xmit(struct ifnet *, struct ifaltq_subque *); static int ena_calc_io_queue_num(struct ena_adapter *, struct ena_com_dev_get_features_ctx *); static int ena_calc_queue_size(struct ena_adapter *, uint16_t *, uint16_t *, struct ena_com_dev_get_features_ctx *); static int ena_rss_init_default(struct ena_adapter *); static void ena_rss_init_default_deferred(void *); static void ena_config_host_info(struct ena_com_dev *); static int ena_attach(device_t); static int ena_detach(device_t); static int ena_device_init(struct ena_adapter *, device_t, struct ena_com_dev_get_features_ctx *, int *); static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *, int); static void ena_update_on_link_change(void *, struct ena_admin_aenq_entry *); static void unimplemented_aenq_handler(void *, struct ena_admin_aenq_entry *); static void ena_timer_service(void *); static char ena_version[] = DEVICE_NAME DRV_MODULE_NAME " v" DRV_MODULE_VERSION; static SYSCTL_NODE(_hw, OID_AUTO, ena, CTLFLAG_RD, 0, "ENA driver parameters"); /* * Logging level for changing verbosity of the output */ int ena_log_level = ENA_ALERT | ENA_WARNING; TUNABLE_INT("hw.ena.ena_log_level", &ena_log_level); SYSCTL_INT(_hw_ena, OID_AUTO, log_level, CTLFLAG_RW, &ena_log_level, 0, "Logging level indicating verbosity of the logs"); static ena_vendor_info_t ena_vendor_info_array[] = { { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_PF, 0}, { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_LLQ_PF, 0}, { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_VF, 0}, { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_LLQ_VF, 0}, /* Last entry */ { 0, 0, 0 } }; /* * Contains pointers to event handlers, e.g. link state chage. */ static struct ena_aenq_handlers aenq_handlers; void ena_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nseg, int error) { if (error != 0) return; *(bus_addr_t *) arg = segs[0].ds_addr; } int ena_dma_alloc(device_t dmadev, bus_size_t size, ena_mem_handle_t *dma , int mapflags) { struct ena_adapter* adapter = device_get_softc(dmadev); uint32_t maxsize; uint64_t dma_space_addr; int error; maxsize = ((size - 1) / PAGE_SIZE + 1) * PAGE_SIZE; dma_space_addr = ENA_DMA_BIT_MASK(adapter->dma_width); if (unlikely(dma_space_addr == 0)) dma_space_addr = BUS_SPACE_MAXADDR; error = bus_dma_tag_create(bus_get_dma_tag(dmadev), /* parent */ 8, 0, /* alignment, bounds */ dma_space_addr, /* lowaddr of exclusion window */ BUS_SPACE_MAXADDR,/* highaddr of exclusion window */ maxsize, /* maxsize */ 1, /* nsegments */ maxsize, /* maxsegsize */ BUS_DMA_ALLOCNOW, /* flags */ &dma->tag); if (unlikely(error != 0)) { ena_trace(ENA_ALERT, "bus_dma_tag_create failed: %d\n", error); goto fail_tag; } error = bus_dmamem_alloc(dma->tag, (void**) &dma->vaddr, BUS_DMA_COHERENT | BUS_DMA_ZERO, &dma->map); if (unlikely(error != 0)) { ena_trace(ENA_ALERT, "bus_dmamem_alloc(%ju) failed: %d\n", (uintmax_t)size, error); goto fail_map_create; } dma->paddr = 0; error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size, ena_dmamap_callback, &dma->paddr, mapflags); if (unlikely((error != 0) || (dma->paddr == 0))) { ena_trace(ENA_ALERT, ": bus_dmamap_load failed: %d\n", error); goto fail_map_load; } return (0); fail_map_load: bus_dmamem_free(dma->tag, dma->vaddr, dma->map); fail_map_create: bus_dma_tag_destroy(dma->tag); fail_tag: dma->tag = NULL; return (error); } static int ena_allocate_pci_resources(struct ena_adapter* adapter) { device_t pdev = adapter->pdev; int rid; rid = PCIR_BAR(ENA_REG_BAR); adapter->memory = NULL; adapter->registers = bus_alloc_resource_any(pdev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (unlikely(adapter->registers == NULL)) { device_printf(pdev, "Unable to allocate bus resource: " "registers\n"); return (ENXIO); } return (0); } static void ena_free_pci_resources(struct ena_adapter *adapter) { device_t pdev = adapter->pdev; if (adapter->memory != NULL) { bus_release_resource(pdev, SYS_RES_MEMORY, PCIR_BAR(ENA_MEM_BAR), adapter->memory); } if (adapter->registers != NULL) { bus_release_resource(pdev, SYS_RES_MEMORY, PCIR_BAR(ENA_REG_BAR), adapter->registers); } } static int ena_probe(device_t dev) { ena_vendor_info_t *ent; char adapter_name[60]; uint16_t pci_vendor_id = 0; uint16_t pci_device_id = 0; pci_vendor_id = pci_get_vendor(dev); pci_device_id = pci_get_device(dev); ent = ena_vendor_info_array; while (ent->vendor_id != 0) { if ((pci_vendor_id == ent->vendor_id) && (pci_device_id == ent->device_id)) { ena_trace(ENA_DBG, "vendor=%x device=%x ", pci_vendor_id, pci_device_id); ksprintf(adapter_name, DEVICE_DESC); device_set_desc_copy(dev, adapter_name); return (BUS_PROBE_DEFAULT); } ent++; } return (ENXIO); } static int ena_change_mtu(if_t ifp, int new_mtu) { struct ena_adapter *adapter = ifp->if_softc; int rc; if ((new_mtu > adapter->max_mtu) || (new_mtu < ENA_MIN_MTU)) { device_printf(adapter->pdev, "Invalid MTU setting. " "new_mtu: %d max mtu: %d min mtu: %d\n", new_mtu, adapter->max_mtu, ENA_MIN_MTU); return (EINVAL); } rc = ena_com_set_dev_mtu(adapter->ena_dev, new_mtu); if (likely(rc == 0)) { ena_trace(ENA_DBG, "set MTU to %d\n", new_mtu); ifp->if_mtu = new_mtu; } else { device_printf(adapter->pdev, "Failed to set MTU to %d\n", new_mtu); } return (rc); } #if 0 /* XXX swildner counters */ static inline void ena_alloc_counters(counter_u64_t *begin, int size) { counter_u64_t *end = (counter_u64_t *)((char *)begin + size); for (; begin < end; ++begin) *begin = counter_u64_alloc(M_WAITOK); } static inline void ena_free_counters(counter_u64_t *begin, int size) { counter_u64_t *end = (counter_u64_t *)((char *)begin + size); for (; begin < end; ++begin) counter_u64_free(*begin); } static inline void ena_reset_counters(counter_u64_t *begin, int size) { counter_u64_t *end = (counter_u64_t *)((char *)begin + size); for (; begin < end; ++begin) counter_u64_zero(*begin); } #endif static void ena_init_io_rings_common(struct ena_adapter *adapter, struct ena_ring *ring, uint16_t qid) { ring->qid = qid; ring->adapter = adapter; ring->ena_dev = adapter->ena_dev; } static void ena_init_io_rings(struct ena_adapter *adapter) { struct ena_com_dev *ena_dev; struct ena_ring *txr, *rxr; struct ena_que *que; int i; ena_dev = adapter->ena_dev; for (i = 0; i < adapter->num_queues; i++) { txr = &adapter->tx_ring[i]; rxr = &adapter->rx_ring[i]; /* TX/RX common ring state */ ena_init_io_rings_common(adapter, txr, i); ena_init_io_rings_common(adapter, rxr, i); /* TX specific ring state */ txr->ring_size = adapter->tx_ring_size; txr->tx_max_header_size = ena_dev->tx_max_header_size; txr->tx_mem_queue_type = ena_dev->tx_mem_queue_type; txr->smoothed_interval = ena_com_get_nonadaptive_moderation_interval_tx(ena_dev); #if 0 /* XXX swildner counters */ /* Alloc TX statistics. */ ena_alloc_counters((counter_u64_t *)&txr->tx_stats, sizeof(txr->tx_stats)); #endif /* RX specific ring state */ rxr->ring_size = adapter->rx_ring_size; rxr->smoothed_interval = ena_com_get_nonadaptive_moderation_interval_rx(ena_dev); #if 0 /* XXX swildner counters */ /* Alloc RX statistics. */ ena_alloc_counters((counter_u64_t *)&rxr->rx_stats, sizeof(rxr->rx_stats)); #endif /* Initialize locks */ ksnprintf(txr->lock_name, nitems(txr->lock_name), "%s:tx(%d)", device_get_nameunit(adapter->pdev), i); ksnprintf(rxr->lock_name, nitems(rxr->lock_name), "%s:rx(%d)", device_get_nameunit(adapter->pdev), i); lockinit(&txr->ring_lock, txr->lock_name, 0, LK_CANRECURSE); lockinit(&rxr->ring_lock, rxr->lock_name, 0, LK_CANRECURSE); que = &adapter->que[i]; que->adapter = adapter; que->id = i; que->tx_ring = txr; que->rx_ring = rxr; txr->que = que; rxr->que = que; rxr->empty_rx_queue = 0; } } static void ena_free_io_ring_resources(struct ena_adapter *adapter, unsigned int qid) { struct ena_ring *txr = &adapter->tx_ring[qid]; struct ena_ring *rxr = &adapter->rx_ring[qid]; #if 0 /* XXX swildner counters */ ena_free_counters((counter_u64_t *)&txr->tx_stats, sizeof(txr->tx_stats)); ena_free_counters((counter_u64_t *)&rxr->rx_stats, sizeof(rxr->rx_stats)); #endif lockuninit(&txr->ring_lock); lockuninit(&rxr->ring_lock); } static void ena_free_all_io_rings_resources(struct ena_adapter *adapter) { int i; for (i = 0; i < adapter->num_queues; i++) ena_free_io_ring_resources(adapter, i); } static int ena_setup_tx_dma_tag(struct ena_adapter *adapter) { int ret; /* Create DMA tag for Tx buffers */ ret = bus_dma_tag_create(bus_get_dma_tag(adapter->pdev), 1, 0, /* alignment, bounds */ ENA_DMA_BIT_MASK(adapter->dma_width), /* lowaddr of excl window */ BUS_SPACE_MAXADDR, /* highaddr of excl window */ ENA_TSO_MAXSIZE, /* maxsize */ ENA_BUS_DMA_SEGS, /* nsegments */ ENA_TSO_MAXSIZE, /* maxsegsize */ 0, /* flags */ &adapter->tx_buf_tag); return (ret); } static int ena_free_tx_dma_tag(struct ena_adapter *adapter) { int ret; ret = bus_dma_tag_destroy(adapter->tx_buf_tag); if (likely(ret == 0)) adapter->tx_buf_tag = NULL; return (ret); } static int ena_setup_rx_dma_tag(struct ena_adapter *adapter) { int ret; /* Create DMA tag for Rx buffers*/ ret = bus_dma_tag_create(bus_get_dma_tag(adapter->pdev), /* parent */ 1, 0, /* alignment, bounds */ ENA_DMA_BIT_MASK(adapter->dma_width), /* lowaddr of excl window */ BUS_SPACE_MAXADDR, /* highaddr of excl window */ MJUM16BYTES, /* maxsize */ adapter->max_rx_sgl_size, /* nsegments */ MJUM16BYTES, /* maxsegsize */ 0, /* flags */ &adapter->rx_buf_tag); return (ret); } static int ena_free_rx_dma_tag(struct ena_adapter *adapter) { int ret; ret = bus_dma_tag_destroy(adapter->rx_buf_tag); if (likely(ret == 0)) adapter->rx_buf_tag = NULL; return (ret); } /** * ena_setup_tx_resources - allocate Tx resources (Descriptors) * @adapter: network interface device structure * @qid: queue index * * Returns 0 on success, otherwise on failure. **/ static int ena_setup_tx_resources(struct ena_adapter *adapter, int qid) { struct ena_que *que = &adapter->que[qid]; struct ena_ring *tx_ring = que->tx_ring; int size, i, err; #ifdef RSS cpuset_t cpu_mask; #endif size = sizeof(struct ena_tx_buffer) * tx_ring->ring_size; tx_ring->tx_buffer_info = kmalloc(size, M_DEVBUF, M_NOWAIT | M_ZERO); if (unlikely(tx_ring->tx_buffer_info == NULL)) return (ENOMEM); size = sizeof(uint16_t) * tx_ring->ring_size; tx_ring->free_tx_ids = kmalloc(size, M_DEVBUF, M_NOWAIT | M_ZERO); if (unlikely(tx_ring->free_tx_ids == NULL)) goto err_buf_info_free; /* Req id stack for TX OOO completions */ for (i = 0; i < tx_ring->ring_size; i++) tx_ring->free_tx_ids[i] = i; #if 0 /* XXX swildner counters */ /* Reset TX statistics. */ ena_reset_counters((counter_u64_t *)&tx_ring->tx_stats, sizeof(tx_ring->tx_stats)); #endif tx_ring->next_to_use = 0; tx_ring->next_to_clean = 0; /* ... and create the buffer DMA maps */ for (i = 0; i < tx_ring->ring_size; i++) { err = bus_dmamap_create(adapter->tx_buf_tag, 0, &tx_ring->tx_buffer_info[i].map); if (unlikely(err != 0)) { ena_trace(ENA_ALERT, "Unable to create Tx DMA map for buffer %d\n", i); goto err_buf_info_unmap; } } return (0); err_buf_info_unmap: while (i--) { bus_dmamap_destroy(adapter->tx_buf_tag, tx_ring->tx_buffer_info[i].map); } kfree(tx_ring->free_tx_ids, M_DEVBUF); tx_ring->free_tx_ids = NULL; err_buf_info_free: kfree(tx_ring->tx_buffer_info, M_DEVBUF); tx_ring->tx_buffer_info = NULL; return (ENOMEM); } /** * ena_free_tx_resources - Free Tx Resources per Queue * @adapter: network interface device structure * @qid: queue index * * Free all transmit software resources **/ static void ena_free_tx_resources(struct ena_adapter *adapter, int qid) { struct ena_ring *tx_ring = &adapter->tx_ring[qid]; ENA_RING_MTX_LOCK(tx_ring); /* Free buffer DMA maps, */ for (int i = 0; i < tx_ring->ring_size; i++) { m_freem(tx_ring->tx_buffer_info[i].mbuf); tx_ring->tx_buffer_info[i].mbuf = NULL; bus_dmamap_unload(adapter->tx_buf_tag, tx_ring->tx_buffer_info[i].map); bus_dmamap_destroy(adapter->tx_buf_tag, tx_ring->tx_buffer_info[i].map); } ENA_RING_MTX_UNLOCK(tx_ring); /* And free allocated memory. */ kfree(tx_ring->tx_buffer_info, M_DEVBUF); tx_ring->tx_buffer_info = NULL; kfree(tx_ring->free_tx_ids, M_DEVBUF); tx_ring->free_tx_ids = NULL; } /** * ena_setup_all_tx_resources - allocate all queues Tx resources * @adapter: network interface device structure * * Returns 0 on success, otherwise on failure. **/ static int ena_setup_all_tx_resources(struct ena_adapter *adapter) { int i, rc; for (i = 0; i < adapter->num_queues; i++) { rc = ena_setup_tx_resources(adapter, i); if (rc != 0) { device_printf(adapter->pdev, "Allocation for Tx Queue %u failed\n", i); goto err_setup_tx; } } return (0); err_setup_tx: /* Rewind the index freeing the rings as we go */ while (i--) ena_free_tx_resources(adapter, i); return (rc); } /** * ena_free_all_tx_resources - Free Tx Resources for All Queues * @adapter: network interface device structure * * Free all transmit software resources **/ static void ena_free_all_tx_resources(struct ena_adapter *adapter) { int i; for (i = 0; i < adapter->num_queues; i++) ena_free_tx_resources(adapter, i); } static inline int validate_rx_req_id(struct ena_ring *rx_ring, uint16_t req_id) { if (likely(req_id < rx_ring->ring_size)) return (0); device_printf(rx_ring->adapter->pdev, "Invalid rx req_id: %hu\n", req_id); IFNET_STAT_INC(rx_ring->adapter->ifp, ierrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(rx_ring->rx_stats.bad_req_id, 1); #endif /* Trigger device reset */ rx_ring->adapter->reset_reason = ENA_REGS_RESET_INV_RX_REQ_ID; rx_ring->adapter->trigger_reset = true; return (EFAULT); } /** * ena_setup_rx_resources - allocate Rx resources (Descriptors) * @adapter: network interface device structure * @qid: queue index * * Returns 0 on success, otherwise on failure. **/ static int ena_setup_rx_resources(struct ena_adapter *adapter, unsigned int qid) { struct ena_que *que = &adapter->que[qid]; struct ena_ring *rx_ring = que->rx_ring; int size, err, i; #ifdef RSS cpuset_t cpu_mask; #endif size = sizeof(struct ena_rx_buffer) * rx_ring->ring_size; /* * Alloc extra element so in rx path * we can always prefetch rx_info + 1 */ size += sizeof(struct ena_rx_buffer); rx_ring->rx_buffer_info = kmalloc(size, M_DEVBUF, M_WAITOK | M_ZERO); size = sizeof(uint16_t) * rx_ring->ring_size; rx_ring->free_rx_ids = kmalloc(size, M_DEVBUF, M_WAITOK); for (i = 0; i < rx_ring->ring_size; i++) rx_ring->free_rx_ids[i] = i; #if 0 /* XXX swildner counters */ /* Reset RX statistics. */ ena_reset_counters((counter_u64_t *)&rx_ring->rx_stats, sizeof(rx_ring->rx_stats)); #endif rx_ring->next_to_clean = 0; rx_ring->next_to_use = 0; /* ... and create the buffer DMA maps */ for (i = 0; i < rx_ring->ring_size; i++) { err = bus_dmamap_create(adapter->rx_buf_tag, 0, &(rx_ring->rx_buffer_info[i].map)); if (err != 0) { ena_trace(ENA_ALERT, "Unable to create Rx DMA map for buffer %d\n", i); goto err_buf_info_unmap; } } #if 0 /* XXX LRO */ /* Create LRO for the ring */ if ((adapter->ifp->if_capenable & IFCAP_LRO) != 0) { int err = tcp_lro_init(&rx_ring->lro); if (err != 0) { device_printf(adapter->pdev, "LRO[%d] Initialization failed!\n", qid); } else { ena_trace(ENA_INFO, "RX Soft LRO[%d] Initialized\n", qid); rx_ring->lro.ifp = adapter->ifp; } } #endif /* Allocate taskqueues */ TASK_INIT(&rx_ring->cmpl_task, 0, ena_deferred_rx_cleanup, rx_ring); rx_ring->cmpl_tq = taskqueue_create("ena RX completion", M_WAITOK, taskqueue_thread_enqueue, &rx_ring->cmpl_tq); /* RSS set cpu for thread */ #ifdef RSS CPU_SETOF(que->cpu, &cpu_mask); taskqueue_start_threads_cpuset(&rx_ring->cmpl_tq, 1, PI_NET, &cpu_mask, "%s rx_ring cmpl (bucket %d)", device_get_nameunit(adapter->pdev), que->cpu); #else taskqueue_start_threads(&rx_ring->cmpl_tq, 1, TDPRI_KERN_DAEMON, -1, "%s rx_ring cmpl", device_get_nameunit(adapter->pdev)); #endif return (0); err_buf_info_unmap: while (i--) { bus_dmamap_destroy(adapter->rx_buf_tag, rx_ring->rx_buffer_info[i].map); } kfree(rx_ring->free_rx_ids, M_DEVBUF); rx_ring->free_rx_ids = NULL; kfree(rx_ring->rx_buffer_info, M_DEVBUF); rx_ring->rx_buffer_info = NULL; return (ENOMEM); } /** * ena_free_rx_resources - Free Rx Resources * @adapter: network interface device structure * @qid: queue index * * Free all receive software resources **/ static void ena_free_rx_resources(struct ena_adapter *adapter, unsigned int qid) { struct ena_ring *rx_ring = &adapter->rx_ring[qid]; while (taskqueue_cancel(rx_ring->cmpl_tq, &rx_ring->cmpl_task, NULL) != 0) taskqueue_drain(rx_ring->cmpl_tq, &rx_ring->cmpl_task); taskqueue_free(rx_ring->cmpl_tq); /* Free buffer DMA maps, */ for (int i = 0; i < rx_ring->ring_size; i++) { m_freem(rx_ring->rx_buffer_info[i].mbuf); rx_ring->rx_buffer_info[i].mbuf = NULL; bus_dmamap_unload(adapter->rx_buf_tag, rx_ring->rx_buffer_info[i].map); bus_dmamap_destroy(adapter->rx_buf_tag, rx_ring->rx_buffer_info[i].map); } #if 0 /* XXX LRO */ /* free LRO resources, */ tcp_lro_free(&rx_ring->lro); #endif /* free allocated memory */ kfree(rx_ring->rx_buffer_info, M_DEVBUF); rx_ring->rx_buffer_info = NULL; kfree(rx_ring->free_rx_ids, M_DEVBUF); rx_ring->free_rx_ids = NULL; } /** * ena_setup_all_rx_resources - allocate all queues Rx resources * @adapter: network interface device structure * * Returns 0 on success, otherwise on failure. **/ static int ena_setup_all_rx_resources(struct ena_adapter *adapter) { int i, rc = 0; for (i = 0; i < adapter->num_queues; i++) { rc = ena_setup_rx_resources(adapter, i); if (rc != 0) { device_printf(adapter->pdev, "Allocation for Rx Queue %u failed\n", i); goto err_setup_rx; } } return (0); err_setup_rx: /* rewind the index freeing the rings as we go */ while (i--) ena_free_rx_resources(adapter, i); return (rc); } /** * ena_free_all_rx_resources - Free Rx resources for all queues * @adapter: network interface device structure * * Free all receive software resources **/ static void ena_free_all_rx_resources(struct ena_adapter *adapter) { int i; for (i = 0; i < adapter->num_queues; i++) ena_free_rx_resources(adapter, i); } static inline int ena_alloc_rx_mbuf(struct ena_adapter *adapter, struct ena_ring *rx_ring, struct ena_rx_buffer *rx_info) { struct ena_com_buf *ena_buf; bus_dma_segment_t segs[1]; int nsegs, error; int mlen; /* if previous allocated frag is not used */ if (unlikely(rx_info->mbuf != NULL)) return (0); /* Get mbuf using UMA allocator */ rx_info->mbuf = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE); if (unlikely(rx_info->mbuf == NULL)) { #if 0 /* XXX swildner counters */ counter_u64_add(rx_ring->rx_stats.mjum_alloc_fail, 1); #endif rx_info->mbuf = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); if (unlikely(rx_info->mbuf == NULL)) { IFNET_STAT_INC(rx_ring->adapter->ifp, ierrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(rx_ring->rx_stats.mbuf_alloc_fail, 1); #endif return (ENOMEM); } mlen = MCLBYTES; } else { mlen = MJUMPAGESIZE; } /* Set mbuf length*/ rx_info->mbuf->m_pkthdr.len = rx_info->mbuf->m_len = mlen; /* Map packets for DMA */ ena_trace(ENA_DBG | ENA_RSC | ENA_RXPTH, "Using tag %p for buffers' DMA mapping, mbuf %p len: %d", adapter->rx_buf_tag,rx_info->mbuf, rx_info->mbuf->m_len); error = bus_dmamap_load_mbuf_segment(adapter->rx_buf_tag, rx_info->map, rx_info->mbuf, segs, 1, &nsegs, BUS_DMA_NOWAIT); if (unlikely((error != 0) || (nsegs != 1))) { ena_trace(ENA_WARNING, "failed to map mbuf, error: %d, " "nsegs: %d\n", error, nsegs); IFNET_STAT_INC(rx_ring->adapter->ifp, ierrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(rx_ring->rx_stats.dma_mapping_err, 1); #endif goto exit; } bus_dmamap_sync(adapter->rx_buf_tag, rx_info->map, BUS_DMASYNC_PREREAD); ena_buf = &rx_info->ena_buf; ena_buf->paddr = segs[0].ds_addr; ena_buf->len = mlen; ena_trace(ENA_DBG | ENA_RSC | ENA_RXPTH, "ALLOC RX BUF: mbuf %p, rx_info %p, len %d, paddr %#jx\n", rx_info->mbuf, rx_info,ena_buf->len, (uintmax_t)ena_buf->paddr); return (0); exit: m_freem(rx_info->mbuf); rx_info->mbuf = NULL; return (EFAULT); } static void ena_free_rx_mbuf(struct ena_adapter *adapter, struct ena_ring *rx_ring, struct ena_rx_buffer *rx_info) { if (rx_info->mbuf == NULL) { ena_trace(ENA_WARNING, "Trying to free unallocated buffer\n"); return; } bus_dmamap_unload(adapter->rx_buf_tag, rx_info->map); m_freem(rx_info->mbuf); rx_info->mbuf = NULL; } /** * ena_refill_rx_bufs - Refills ring with descriptors * @rx_ring: the ring which we want to feed with free descriptors * @num: number of descriptors to refill * Refills the ring with newly allocated DMA-mapped mbufs for receiving **/ static int ena_refill_rx_bufs(struct ena_ring *rx_ring, uint32_t num) { struct ena_adapter *adapter = rx_ring->adapter; uint16_t next_to_use, req_id; uint32_t i; int rc; ena_trace(ENA_DBG | ENA_RXPTH | ENA_RSC, "refill qid: %d", rx_ring->qid); next_to_use = rx_ring->next_to_use; for (i = 0; i < num; i++) { struct ena_rx_buffer *rx_info; ena_trace(ENA_DBG | ENA_RXPTH | ENA_RSC, "RX buffer - next to use: %d", next_to_use); req_id = rx_ring->free_rx_ids[next_to_use]; rc = validate_rx_req_id(rx_ring, req_id); if (unlikely(rc != 0)) break; rx_info = &rx_ring->rx_buffer_info[req_id]; rc = ena_alloc_rx_mbuf(adapter, rx_ring, rx_info); if (unlikely(rc != 0)) { ena_trace(ENA_WARNING, "failed to alloc buffer for rx queue %d\n", rx_ring->qid); break; } rc = ena_com_add_single_rx_desc(rx_ring->ena_com_io_sq, &rx_info->ena_buf, req_id); if (unlikely(rc != 0)) { ena_trace(ENA_WARNING, "failed to add buffer for rx queue %d\n", rx_ring->qid); break; } next_to_use = ENA_RX_RING_IDX_NEXT(next_to_use, rx_ring->ring_size); } if (unlikely(i < num)) { IFNET_STAT_INC(rx_ring->adapter->ifp, ierrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(rx_ring->rx_stats.refil_partial, 1); #endif ena_trace(ENA_WARNING, "refilled rx qid %d with only %d mbufs (from %d)\n", rx_ring->qid, i, num); } if (likely(i != 0)) { wmb(); ena_com_write_sq_doorbell(rx_ring->ena_com_io_sq); } rx_ring->next_to_use = next_to_use; return (i); } static void ena_free_rx_bufs(struct ena_adapter *adapter, unsigned int qid) { struct ena_ring *rx_ring = &adapter->rx_ring[qid]; unsigned int i; for (i = 0; i < rx_ring->ring_size; i++) { struct ena_rx_buffer *rx_info = &rx_ring->rx_buffer_info[i]; if (rx_info->mbuf != NULL) ena_free_rx_mbuf(adapter, rx_ring, rx_info); } } /** * ena_refill_all_rx_bufs - allocate all queues Rx buffers * @adapter: network interface device structure * */ static void ena_refill_all_rx_bufs(struct ena_adapter *adapter) { struct ena_ring *rx_ring; int i, rc, bufs_num; for (i = 0; i < adapter->num_queues; i++) { rx_ring = &adapter->rx_ring[i]; bufs_num = rx_ring->ring_size - 1; rc = ena_refill_rx_bufs(rx_ring, bufs_num); if (unlikely(rc != bufs_num)) ena_trace(ENA_WARNING, "refilling Queue %d failed. " "Allocated %d buffers from: %d\n", i, rc, bufs_num); } } static void ena_free_all_rx_bufs(struct ena_adapter *adapter) { int i; for (i = 0; i < adapter->num_queues; i++) ena_free_rx_bufs(adapter, i); } /** * ena_free_tx_bufs - Free Tx Buffers per Queue * @adapter: network interface device structure * @qid: queue index **/ static void ena_free_tx_bufs(struct ena_adapter *adapter, unsigned int qid) { bool print_once = true; struct ena_ring *tx_ring = &adapter->tx_ring[qid]; ENA_RING_MTX_LOCK(tx_ring); for (int i = 0; i < tx_ring->ring_size; i++) { struct ena_tx_buffer *tx_info = &tx_ring->tx_buffer_info[i]; if (tx_info->mbuf == NULL) continue; if (print_once) { device_printf(adapter->pdev, "free uncompleted tx mbuf qid %d idx 0x%x", qid, i); print_once = false; } else { ena_trace(ENA_DBG, "free uncompleted tx mbuf qid %d idx 0x%x", qid, i); } bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map); m_free(tx_info->mbuf); tx_info->mbuf = NULL; } ENA_RING_MTX_UNLOCK(tx_ring); } static void ena_free_all_tx_bufs(struct ena_adapter *adapter) { for (int i = 0; i < adapter->num_queues; i++) ena_free_tx_bufs(adapter, i); } static void ena_destroy_all_tx_queues(struct ena_adapter *adapter) { uint16_t ena_qid; int i; for (i = 0; i < adapter->num_queues; i++) { ena_qid = ENA_IO_TXQ_IDX(i); ena_com_destroy_io_queue(adapter->ena_dev, ena_qid); } } static void ena_destroy_all_rx_queues(struct ena_adapter *adapter) { uint16_t ena_qid; int i; for (i = 0; i < adapter->num_queues; i++) { ena_qid = ENA_IO_RXQ_IDX(i); ena_com_destroy_io_queue(adapter->ena_dev, ena_qid); } } static void ena_destroy_all_io_queues(struct ena_adapter *adapter) { ena_destroy_all_tx_queues(adapter); ena_destroy_all_rx_queues(adapter); } static inline int validate_tx_req_id(struct ena_ring *tx_ring, uint16_t req_id) { struct ena_adapter *adapter = tx_ring->adapter; struct ena_tx_buffer *tx_info = NULL; if (likely(req_id < tx_ring->ring_size)) { tx_info = &tx_ring->tx_buffer_info[req_id]; if (tx_info->mbuf != NULL) return (0); } if (tx_info->mbuf == NULL) device_printf(adapter->pdev, "tx_info doesn't have valid mbuf\n"); else device_printf(adapter->pdev, "Invalid req_id: %hu\n", req_id); IFNET_STAT_INC(tx_ring->adapter->ifp, oerrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(tx_ring->tx_stats.bad_req_id, 1); #endif return (EFAULT); } static int ena_create_io_queues(struct ena_adapter *adapter) { struct ena_com_dev *ena_dev = adapter->ena_dev; struct ena_com_create_io_ctx ctx; struct ena_ring *ring; uint16_t ena_qid; uint32_t msix_vector; int rc, i; /* Create TX queues */ for (i = 0; i < adapter->num_queues; i++) { msix_vector = ENA_IO_IRQ_IDX(i); ena_qid = ENA_IO_TXQ_IDX(i); ctx.mem_queue_type = ena_dev->tx_mem_queue_type; ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX; ctx.queue_size = adapter->tx_ring_size; ctx.msix_vector = msix_vector; ctx.qid = ena_qid; rc = ena_com_create_io_queue(ena_dev, &ctx); if (rc != 0) { device_printf(adapter->pdev, "Failed to create io TX queue #%d rc: %d\n", i, rc); goto err_tx; } ring = &adapter->tx_ring[i]; rc = ena_com_get_io_handlers(ena_dev, ena_qid, &ring->ena_com_io_sq, &ring->ena_com_io_cq); if (rc != 0) { device_printf(adapter->pdev, "Failed to get TX queue handlers. TX queue num" " %d rc: %d\n", i, rc); ena_com_destroy_io_queue(ena_dev, ena_qid); goto err_tx; } } /* Create RX queues */ for (i = 0; i < adapter->num_queues; i++) { msix_vector = ENA_IO_IRQ_IDX(i); ena_qid = ENA_IO_RXQ_IDX(i); ctx.mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX; ctx.queue_size = adapter->rx_ring_size; ctx.msix_vector = msix_vector; ctx.qid = ena_qid; rc = ena_com_create_io_queue(ena_dev, &ctx); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "Failed to create io RX queue[%d] rc: %d\n", i, rc); goto err_rx; } ring = &adapter->rx_ring[i]; rc = ena_com_get_io_handlers(ena_dev, ena_qid, &ring->ena_com_io_sq, &ring->ena_com_io_cq); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "Failed to get RX queue handlers. RX queue num" " %d rc: %d\n", i, rc); ena_com_destroy_io_queue(ena_dev, ena_qid); goto err_rx; } } return (0); err_rx: while (i--) ena_com_destroy_io_queue(ena_dev, ENA_IO_RXQ_IDX(i)); i = adapter->num_queues; err_tx: while (i--) ena_com_destroy_io_queue(ena_dev, ENA_IO_TXQ_IDX(i)); return (ENXIO); } /** * ena_tx_cleanup - clear sent packets and corresponding descriptors * @tx_ring: ring for which we want to clean packets * * Once packets are sent, we ask the device in a loop for no longer used * descriptors. We find the related mbuf chain in a map (index in an array) * and free it, then update ring state. * This is performed in "endless" loop, updating ring pointers every * TX_COMMIT. The first check of free descriptor is performed before the actual * loop, then repeated at the loop end. **/ static int ena_tx_cleanup(struct ena_ring *tx_ring) { struct ena_adapter *adapter; struct ena_com_io_cq* io_cq; uint16_t next_to_clean; uint16_t req_id; uint16_t ena_qid; unsigned int total_done = 0; int rc; int commit = TX_COMMIT; int budget = TX_BUDGET; int work_done; adapter = tx_ring->que->adapter; ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id); io_cq = &adapter->ena_dev->io_cq_queues[ena_qid]; next_to_clean = tx_ring->next_to_clean; do { struct ena_tx_buffer *tx_info; struct mbuf *mbuf; rc = ena_com_tx_comp_req_id_get(io_cq, &req_id); if (unlikely(rc != 0)) break; rc = validate_tx_req_id(tx_ring, req_id); if (unlikely(rc != 0)) break; tx_info = &tx_ring->tx_buffer_info[req_id]; mbuf = tx_info->mbuf; tx_info->mbuf = NULL; timevalclear(&tx_info->timestamp); if (likely(tx_info->num_of_bufs != 0)) { /* Map is no longer required */ bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map); } ena_trace(ENA_DBG | ENA_TXPTH, "tx: q %d mbuf %p completed", tx_ring->qid, mbuf); m_freem(mbuf); total_done += tx_info->tx_descs; tx_ring->free_tx_ids[next_to_clean] = req_id; next_to_clean = ENA_TX_RING_IDX_NEXT(next_to_clean, tx_ring->ring_size); if (unlikely(--commit == 0)) { commit = TX_COMMIT; /* update ring state every TX_COMMIT descriptor */ tx_ring->next_to_clean = next_to_clean; ena_com_comp_ack( &adapter->ena_dev->io_sq_queues[ena_qid], total_done); ena_com_update_dev_comp_head(io_cq); total_done = 0; } } while (likely(--budget)); work_done = TX_BUDGET - budget; ena_trace(ENA_DBG | ENA_TXPTH, "tx: q %d done. total pkts: %d", tx_ring->qid, work_done); /* If there is still something to commit update ring state */ if (likely(commit != TX_COMMIT)) { tx_ring->next_to_clean = next_to_clean; ena_com_comp_ack(&adapter->ena_dev->io_sq_queues[ena_qid], total_done); ena_com_update_dev_comp_head(io_cq); } return (work_done); } static void ena_rx_hash_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_ctx *ena_rx_ctx, struct mbuf *mbuf) { struct ena_adapter *adapter = rx_ring->adapter; if (likely(adapter->rss_support)) { //mbuf->m_pkthdr.flowid = ena_rx_ctx->hash; m_sethash(mbuf, ena_rx_ctx->hash); #if 0 /* XXX rsstype doesn't seem to be needed by the network stack, we will only supply the hash. */ if (ena_rx_ctx->frag && (ena_rx_ctx->l3_proto != ENA_ETH_IO_L3_PROTO_UNKNOWN)) { M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH); return; } switch (ena_rx_ctx->l3_proto) { case ENA_ETH_IO_L3_PROTO_IPV4: switch (ena_rx_ctx->l4_proto) { case ENA_ETH_IO_L4_PROTO_TCP: M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV4); break; case ENA_ETH_IO_L4_PROTO_UDP: M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV4); break; default: M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV4); } break; case ENA_ETH_IO_L3_PROTO_IPV6: switch (ena_rx_ctx->l4_proto) { case ENA_ETH_IO_L4_PROTO_TCP: M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV6); break; case ENA_ETH_IO_L4_PROTO_UDP: M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV6); break; default: M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV6); } break; case ENA_ETH_IO_L3_PROTO_UNKNOWN: M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE); break; default: M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH); } #endif } else { //mbuf->m_pkthdr.flowid = rx_ring->qid; //M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE); m_sethash(mbuf, rx_ring->qid); } } /** * ena_rx_mbuf - assemble mbuf from descriptors * @rx_ring: ring for which we want to clean packets * @ena_bufs: buffer info * @ena_rx_ctx: metadata for this packet(s) * @next_to_clean: ring pointer, will be updated only upon success * **/ static struct mbuf* ena_rx_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_buf_info *ena_bufs, struct ena_com_rx_ctx *ena_rx_ctx, uint16_t *next_to_clean) { struct mbuf *mbuf; struct ena_rx_buffer *rx_info; struct ena_adapter *adapter; unsigned int descs = ena_rx_ctx->descs; uint16_t ntc, len, req_id, buf = 0; ntc = *next_to_clean; adapter = rx_ring->adapter; rx_info = &rx_ring->rx_buffer_info[ntc]; if (unlikely(rx_info->mbuf == NULL)) { device_printf(adapter->pdev, "NULL mbuf in rx_info"); return (NULL); } len = ena_bufs[buf].len; req_id = ena_bufs[buf].req_id; rx_info = &rx_ring->rx_buffer_info[req_id]; ena_trace(ENA_DBG | ENA_RXPTH, "rx_info %p, mbuf %p, paddr %jx", rx_info, rx_info->mbuf, (uintmax_t)rx_info->ena_buf.paddr); mbuf = rx_info->mbuf; mbuf->m_flags |= M_PKTHDR; mbuf->m_pkthdr.len = len; mbuf->m_len = len; mbuf->m_pkthdr.rcvif = rx_ring->que->adapter->ifp; /* Fill mbuf with hash key and it's interpretation for optimization */ ena_rx_hash_mbuf(rx_ring, ena_rx_ctx, mbuf); ena_trace(ENA_DBG | ENA_RXPTH, "rx mbuf 0x%p, flags=0x%x, len: %d", mbuf, mbuf->m_flags, mbuf->m_pkthdr.len); /* DMA address is not needed anymore, unmap it */ bus_dmamap_unload(rx_ring->adapter->rx_buf_tag, rx_info->map); rx_info->mbuf = NULL; rx_ring->free_rx_ids[ntc] = req_id; ntc = ENA_RX_RING_IDX_NEXT(ntc, rx_ring->ring_size); /* * While we have more than 1 descriptors for one rcvd packet, append * other mbufs to the main one */ while (--descs) { ++buf; len = ena_bufs[buf].len; req_id = ena_bufs[buf].req_id; rx_info = &rx_ring->rx_buffer_info[req_id]; if (unlikely(rx_info->mbuf == NULL)) { device_printf(adapter->pdev, "NULL mbuf in rx_info"); /* * If one of the required mbufs was not allocated yet, * we can break there. * All earlier used descriptors will be reallocated * later and not used mbufs can be reused. * The next_to_clean pointer will not be updated in case * of an error, so caller should advance it manually * in error handling routine to keep it up to date * with hw ring. */ m_freem(mbuf); return (NULL); } if (unlikely(m_append(mbuf, len, rx_info->mbuf->m_data) == 0)) { IFNET_STAT_INC(rx_ring->adapter->ifp, ierrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(rx_ring->rx_stats.mbuf_alloc_fail, 1); #endif ena_trace(ENA_WARNING, "Failed to append Rx mbuf %p", mbuf); } ena_trace(ENA_DBG | ENA_RXPTH, "rx mbuf updated. len %d", mbuf->m_pkthdr.len); /* Free already appended mbuf, it won't be useful anymore */ bus_dmamap_unload(rx_ring->adapter->rx_buf_tag, rx_info->map); m_freem(rx_info->mbuf); rx_info->mbuf = NULL; rx_ring->free_rx_ids[ntc] = req_id; ntc = ENA_RX_RING_IDX_NEXT(ntc, rx_ring->ring_size); } *next_to_clean = ntc; return (mbuf); } /** * ena_rx_checksum - indicate in mbuf if hw indicated a good cksum **/ static inline void ena_rx_checksum(struct ena_ring *rx_ring, struct ena_com_rx_ctx *ena_rx_ctx, struct mbuf *mbuf) { /* if IP and error */ if (unlikely((ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV4) && ena_rx_ctx->l3_csum_err)) { /* ipv4 checksum error */ mbuf->m_pkthdr.csum_flags = 0; IFNET_STAT_INC(rx_ring->adapter->ifp, ierrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(rx_ring->rx_stats.bad_csum, 1); #endif ena_trace(ENA_DBG, "RX IPv4 header checksum error"); return; } /* if TCP/UDP */ if ((ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_TCP) || (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_UDP)) { if (ena_rx_ctx->l4_csum_err) { /* TCP/UDP checksum error */ mbuf->m_pkthdr.csum_flags = 0; IFNET_STAT_INC(rx_ring->adapter->ifp, ierrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(rx_ring->rx_stats.bad_csum, 1); #endif ena_trace(ENA_DBG, "RX L4 checksum error"); } else { mbuf->m_pkthdr.csum_flags = CSUM_IP_CHECKED; mbuf->m_pkthdr.csum_flags |= CSUM_IP_VALID; } } } static void ena_deferred_rx_cleanup(void *arg, int pending) { struct ena_ring *rx_ring = arg; int budget = CLEAN_BUDGET; ENA_RING_MTX_LOCK(rx_ring); /* * If deferred task was executed, perform cleanup of all awaiting * descs (or until given budget is depleted to avoid infinite loop). */ while (likely(budget--)) { if (ena_rx_cleanup(rx_ring) == 0) break; } ENA_RING_MTX_UNLOCK(rx_ring); } /** * ena_rx_cleanup - handle rx irq * @arg: ring for which irq is being handled **/ static int ena_rx_cleanup(struct ena_ring *rx_ring) { struct ena_adapter *adapter; struct mbuf *mbuf; struct ena_com_rx_ctx ena_rx_ctx; struct ena_com_io_cq* io_cq; struct ena_com_io_sq* io_sq; if_t ifp; uint16_t ena_qid; uint16_t next_to_clean; uint32_t refill_required; uint32_t refill_threshold; uint32_t do_if_input = 0; unsigned int qid; int rc, i; int budget = RX_BUDGET; adapter = rx_ring->que->adapter; ifp = adapter->ifp; qid = rx_ring->que->id; ena_qid = ENA_IO_RXQ_IDX(qid); io_cq = &adapter->ena_dev->io_cq_queues[ena_qid]; io_sq = &adapter->ena_dev->io_sq_queues[ena_qid]; next_to_clean = rx_ring->next_to_clean; ena_trace(ENA_DBG, "rx: qid %d", qid); do { ena_rx_ctx.ena_bufs = rx_ring->ena_bufs; ena_rx_ctx.max_bufs = adapter->max_rx_sgl_size; ena_rx_ctx.descs = 0; rc = ena_com_rx_pkt(io_cq, io_sq, &ena_rx_ctx); if (unlikely(rc != 0)) goto error; if (unlikely(ena_rx_ctx.descs == 0)) break; ena_trace(ENA_DBG | ENA_RXPTH, "rx: q %d got packet from ena. " "descs #: %d l3 proto %d l4 proto %d hash: %x", rx_ring->qid, ena_rx_ctx.descs, ena_rx_ctx.l3_proto, ena_rx_ctx.l4_proto, ena_rx_ctx.hash); /* Receive mbuf from the ring */ mbuf = ena_rx_mbuf(rx_ring, rx_ring->ena_bufs, &ena_rx_ctx, &next_to_clean); /* Exit if we failed to retrieve a buffer */ if (unlikely(mbuf == NULL)) { for (i = 0; i < ena_rx_ctx.descs; ++i) { rx_ring->free_rx_ids[next_to_clean] = rx_ring->ena_bufs[i].req_id; next_to_clean = ENA_RX_RING_IDX_NEXT(next_to_clean, rx_ring->ring_size); } break; } /* * XXX Removed IFCAP_RXCSUM_IPV6 check because DragonFly * does not seem to support it */ if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) { ena_rx_checksum(rx_ring, &ena_rx_ctx, mbuf); } #if 0 /* XXX swildner counters */ counter_enter(); counter_u64_add_protected(rx_ring->rx_stats.bytes, mbuf->m_pkthdr.len); counter_u64_add_protected(adapter->hw_stats.rx_bytes, mbuf->m_pkthdr.len); counter_exit(); #endif /* * LRO is only for IP/TCP packets and TCP checksum of the packet * should be computed by hardware. */ do_if_input = 1; #if 0 /* XXX LRO */ if (((ifp->if_capenable & IFCAP_LRO) != 0) && ((mbuf->m_pkthdr.csum_flags & CSUM_IP_VALID) != 0) && (ena_rx_ctx.l4_proto == ENA_ETH_IO_L4_PROTO_TCP)) { /* * Send to the stack if: * - LRO not enabled, or * - no LRO resources, or * - lro enqueue fails */ if ((rx_ring->lro.lro_cnt != 0) && (tcp_lro_rx(&rx_ring->lro, mbuf, 0) == 0)) do_if_input = 0; } #endif if (do_if_input != 0) { ena_trace(ENA_DBG | ENA_RXPTH, "calling if_input() with mbuf %p", mbuf); ENA_RING_MTX_UNLOCK(rx_ring); (*ifp->if_input)(ifp, mbuf, NULL, -1); ENA_RING_MTX_LOCK(rx_ring); } IFNET_STAT_INC(ifp, ipackets, 1); #if 0 /* XXX swildner counters */ counter_enter(); counter_u64_add_protected(rx_ring->rx_stats.cnt, 1); counter_u64_add_protected(adapter->hw_stats.rx_packets, 1); counter_exit(); #endif } while (--budget); rx_ring->next_to_clean = next_to_clean; refill_required = ena_com_free_desc(io_sq); refill_threshold = rx_ring->ring_size / ENA_RX_REFILL_THRESH_DIVIDER; if (refill_required > refill_threshold) { ena_com_update_dev_comp_head(rx_ring->ena_com_io_cq); ena_refill_rx_bufs(rx_ring, refill_required); } #if 0 /* XXX LRO */ tcp_lro_flush_all(&rx_ring->lro); #endif return (RX_BUDGET - budget); error: IFNET_STAT_INC(rx_ring->adapter->ifp, ierrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(rx_ring->rx_stats.bad_desc_num, 1); #endif return (RX_BUDGET - budget); } /********************************************************************* * * MSIX & Interrupt Service routine * **********************************************************************/ /** * ena_handle_msix - MSIX Interrupt Handler for admin/async queue * @arg: interrupt number **/ static void ena_intr_msix_mgmnt(void *arg) { struct ena_adapter *adapter = (struct ena_adapter *)arg; ena_com_admin_q_comp_intr_handler(adapter->ena_dev); if (likely(adapter->running)) ena_com_aenq_intr_handler(adapter->ena_dev, arg); } /** * ena_handle_msix - MSIX Interrupt Handler for Tx/Rx * @arg: interrupt number **/ static void ena_handle_msix(void *arg) { struct ena_que *que = arg; struct ena_adapter *adapter = que->adapter; if_t ifp = adapter->ifp; struct ena_ring *tx_ring; struct ena_ring *rx_ring; struct ena_com_io_cq* io_cq; struct ena_eth_io_intr_reg intr_reg; int qid, ena_qid; int txc, rxc, i; if (unlikely((ifp->if_flags & IFF_RUNNING) == 0)) return; ena_trace(ENA_DBG, "MSI-X TX/RX routine"); tx_ring = que->tx_ring; rx_ring = que->rx_ring; qid = que->id; ena_qid = ENA_IO_TXQ_IDX(qid); io_cq = &adapter->ena_dev->io_cq_queues[ena_qid]; for (i = 0; i < CLEAN_BUDGET; ++i) { /* * If lock cannot be acquired, then deferred cleanup task was * being executed and rx ring is being cleaned up in * another thread. */ if (likely(ENA_RING_MTX_TRYLOCK(rx_ring) != 0)) { rxc = ena_rx_cleanup(rx_ring); ENA_RING_MTX_UNLOCK(rx_ring); } else { rxc = 0; } /* Protection from calling ena_tx_cleanup from ena_start_xmit */ ENA_RING_MTX_LOCK(tx_ring); txc = ena_tx_cleanup(tx_ring); ENA_RING_MTX_UNLOCK(tx_ring); if (unlikely((ifp->if_flags & IFF_RUNNING) == 0)) return; if ((txc != TX_BUDGET) && (rxc != RX_BUDGET)) break; } /* Signal that work is done and unmask interrupt */ ena_com_update_intr_reg(&intr_reg, RX_IRQ_INTERVAL, TX_IRQ_INTERVAL, true); ena_com_unmask_intr(io_cq, &intr_reg); } static int ena_enable_msix(struct ena_adapter *adapter) { device_t dev = adapter->pdev; int msix_vecs; int error, i, rc = 0; /* Reserved the max msix vectors we might need */ msix_vecs = ENA_MAX_MSIX_VEC(adapter->num_queues); adapter->msix_entries = kmalloc(msix_vecs * sizeof(struct msix_entry), M_DEVBUF, M_WAITOK | M_ZERO); ena_trace(ENA_DBG, "trying to enable MSI-X, vectors: %d", msix_vecs); for (i = 0; i < msix_vecs; i++) { adapter->msix_entries[i].entry = i; /* Vectors must start from 1 */ adapter->msix_entries[i].vector = i + 1; } error = pci_setup_msix(dev); if (error) { device_printf(dev, "pci_setup_msix() failed\n"); goto err_msix_free; } adapter->msix_vecs = msix_vecs; adapter->msix_enabled = true; return (0); err_msix_free: kfree(adapter->msix_entries, M_DEVBUF); adapter->msix_entries = NULL; return (rc); } static void ena_setup_mgmnt_intr(struct ena_adapter *adapter) { ksnprintf(adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].name, ENA_IRQNAME_SIZE, "ena-mgmnt@pci:%s", device_get_nameunit(adapter->pdev)); /* * Handler is NULL on purpose, it will be set * when mgmnt interrupt is acquired */ adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].handler = NULL; adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].data = adapter; adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].vector = adapter->msix_entries[ENA_MGMNT_IRQ_IDX].vector; } static void ena_setup_io_intr(struct ena_adapter *adapter) { static int last_bind_cpu = -1; int irq_idx; for (int i = 0; i < adapter->num_queues; i++) { irq_idx = ENA_IO_IRQ_IDX(i); ksnprintf(adapter->irq_tbl[irq_idx].name, ENA_IRQNAME_SIZE, "%s-TxRx-%d", device_get_nameunit(adapter->pdev), i); adapter->irq_tbl[irq_idx].handler = ena_handle_msix; adapter->irq_tbl[irq_idx].data = &adapter->que[i]; adapter->irq_tbl[irq_idx].vector = adapter->msix_entries[irq_idx].vector; ena_trace(ENA_INFO | ENA_IOQ, "ena_setup_io_intr vector: %d\n", adapter->msix_entries[irq_idx].vector); #ifdef RSS adapter->que[i].cpu = adapter->irq_tbl[irq_idx].cpu = rss_getcpu(i % rss_getnumbuckets()); #else /* * We still want to bind rings to the corresponding cpu * using something similar to the RSS round-robin technique. * * XXX It seems that this can be removed since DragonFly has * native support for RSS. DragonFly also does not have * support for CPU_FIRST or CPU_NEXT. */ if (last_bind_cpu < 0) last_bind_cpu = (last_bind_cpu + 1) % ncpus; adapter->que[i].cpu = adapter->irq_tbl[irq_idx].cpu = last_bind_cpu; last_bind_cpu = (last_bind_cpu + 1) % ncpus; #endif } } static int ena_request_mgmnt_irq(struct ena_adapter *adapter) { struct ena_irq *irq; unsigned long flags; int error, rc, rcc; flags = RF_ACTIVE | RF_SHAREABLE; irq = &adapter->irq_tbl[ENA_MGMNT_IRQ_IDX]; error = pci_alloc_msix_vector(adapter->pdev, 0, &irq->vector, 0); if (error) { device_printf(adapter->pdev, "Could not initialize MGMNT MSI-X Vector on cpu0\n"); return (ENXIO); } irq->res = bus_alloc_resource_any(adapter->pdev, SYS_RES_IRQ, &irq->vector, flags); if (unlikely(irq->res == NULL)) { device_printf(adapter->pdev, "could not allocate " "irq vector: %d\n", irq->vector); pci_release_msix_vector(adapter->pdev, irq->vector); return (ENXIO); } rc = bus_activate_resource(adapter->pdev, SYS_RES_IRQ, irq->vector, irq->res); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "could not activate " "irq vector: %d\n", irq->vector); goto err_res_free; } rc = bus_setup_intr(adapter->pdev, irq->res, INTR_MPSAFE, ena_intr_msix_mgmnt, irq->data, &irq->cookie, NULL); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "failed to register " "interrupt handler for irq %ju: %d\n", rman_get_start(irq->res), rc); goto err_res_free; } irq->requested = true; return (rc); err_res_free: ena_trace(ENA_INFO | ENA_ADMQ, "releasing resource for irq %d\n", irq->vector); rcc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, irq->vector, irq->res); pci_release_msix_vector(adapter->pdev, irq->vector); if (unlikely(rcc != 0)) device_printf(adapter->pdev, "dev has no parent while " "releasing res for irq: %d\n", irq->vector); irq->res = NULL; return (rc); } static int ena_request_io_irq(struct ena_adapter *adapter) { struct ena_irq *irq; unsigned long flags = 0; int rc = 0, i, rcc, error; if (unlikely(adapter->msix_enabled == 0)) { device_printf(adapter->pdev, "failed to request I/O IRQ: MSI-X is not enabled\n"); return (EINVAL); } else { flags = RF_ACTIVE | RF_SHAREABLE; } for (i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) { irq = &adapter->irq_tbl[i]; if (unlikely(irq->requested)) continue; error = pci_alloc_msix_vector(adapter->pdev, i, &irq->vector, irq->cpu); if (error) { device_printf(adapter->pdev, "Unable to allocated MSI-X %d on cpu%d\n", i, irq->cpu); goto err; } irq->res = bus_alloc_resource_any(adapter->pdev, SYS_RES_IRQ, &irq->vector, flags); if (unlikely(irq->res == NULL)) { device_printf(adapter->pdev, "could not allocate " "irq vector: %d\n", irq->vector); goto err; } /* * TODO: Might need to setup desc and use irq->name as the * value */ rc = bus_setup_intr(adapter->pdev, irq->res, INTR_MPSAFE, irq->handler, irq->data, &irq->cookie, NULL); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "failed to register " "interrupt handler for irq %ju: %d\n", rman_get_start(irq->res), rc); goto err; } irq->requested = true; #ifdef RSS ena_trace(ENA_INFO, "queue %d - RSS bucket %d\n", i - ENA_IO_IRQ_FIRST_IDX, irq->cpu); #else ena_trace(ENA_INFO, "queue %d - cpu %d\n", i - ENA_IO_IRQ_FIRST_IDX, irq->cpu); #endif } return (rc); err: for (; i >= ENA_IO_IRQ_FIRST_IDX; i--) { irq = &adapter->irq_tbl[i]; rcc = 0; /* Once we entered err: section and irq->requested is true we free both intr and resources */ if (irq->requested) rcc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie); if (unlikely(rcc != 0)) device_printf(adapter->pdev, "could not release" " irq: %d, error: %d\n", irq->vector, rcc); /* If we entred err: section without irq->requested set we know it was bus_alloc_resource_any() that needs cleanup, provided res is not NULL. In case res is NULL no work in needed in this iteration */ rcc = 0; if (irq->res != NULL) { rcc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, irq->vector, irq->res); pci_release_msix_vector(adapter->pdev, irq->vector); } if (unlikely(rcc != 0)) device_printf(adapter->pdev, "dev has no parent while " "releasing res for irq: %d\n", irq->vector); irq->requested = false; irq->res = NULL; } return (rc); } static void ena_free_mgmnt_irq(struct ena_adapter *adapter) { struct ena_irq *irq; int rc; irq = &adapter->irq_tbl[ENA_MGMNT_IRQ_IDX]; if (irq->requested) { ena_trace(ENA_INFO | ENA_ADMQ, "tear down irq: %d\n", irq->vector); rc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie); if (unlikely(rc != 0)) device_printf(adapter->pdev, "failed to tear " "down irq: %d\n", irq->vector); irq->requested = 0; } if (irq->res != NULL) { ena_trace(ENA_INFO | ENA_ADMQ, "release resource irq: %d\n", irq->vector); rc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, irq->vector, irq->res); pci_release_msix_vector(adapter->pdev, irq->vector); irq->res = NULL; if (unlikely(rc != 0)) device_printf(adapter->pdev, "dev has no parent while " "releasing res for irq: %d\n", irq->vector); } } static void ena_free_io_irq(struct ena_adapter *adapter) { struct ena_irq *irq; int rc; for (int i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) { irq = &adapter->irq_tbl[i]; if (irq->requested) { ena_trace(ENA_INFO | ENA_IOQ, "tear down irq: %d\n", irq->vector); rc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "failed to tear " "down irq: %d\n", irq->vector); } irq->requested = 0; } if (irq->res != NULL) { ena_trace(ENA_INFO | ENA_IOQ, "release resource irq: %d\n", irq->vector); rc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, irq->vector, irq->res); pci_release_msix_vector(adapter->pdev, irq->vector); irq->res = NULL; if (unlikely(rc != 0)) { device_printf(adapter->pdev, "dev has no parent" " while releasing res for irq: %d\n", irq->vector); } } } } static void ena_free_irqs(struct ena_adapter* adapter) { ena_free_io_irq(adapter); ena_free_mgmnt_irq(adapter); ena_disable_msix(adapter); } static void ena_disable_msix(struct ena_adapter *adapter) { pci_release_msi(adapter->pdev); adapter->msix_vecs = 0; kfree(adapter->msix_entries, M_DEVBUF); adapter->msix_entries = NULL; } static void ena_unmask_all_io_irqs(struct ena_adapter *adapter) { struct ena_com_io_cq* io_cq; struct ena_eth_io_intr_reg intr_reg; uint16_t ena_qid; int i; /* Unmask interrupts for all queues */ for (i = 0; i < adapter->num_queues; i++) { ena_qid = ENA_IO_TXQ_IDX(i); io_cq = &adapter->ena_dev->io_cq_queues[ena_qid]; ena_com_update_intr_reg(&intr_reg, 0, 0, true); ena_com_unmask_intr(io_cq, &intr_reg); } } /* Configure the Rx forwarding */ static int ena_rss_configure(struct ena_adapter *adapter) { struct ena_com_dev *ena_dev = adapter->ena_dev; int rc; /* Set indirect table */ rc = ena_com_indirect_table_set(ena_dev); if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) return (rc); /* Configure hash function (if supported) */ rc = ena_com_set_hash_function(ena_dev); if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) return (rc); /* Configure hash inputs (if supported) */ rc = ena_com_set_hash_ctrl(ena_dev); if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) return (rc); return (0); } static int ena_up_complete(struct ena_adapter *adapter) { int rc; if (likely(adapter->rss_support)) { rc = ena_rss_configure(adapter); if (rc != 0) return (rc); } rc = ena_change_mtu(adapter->ifp, adapter->ifp->if_mtu); if (unlikely(rc != 0)) return (rc); ena_refill_all_rx_bufs(adapter); #if 0 /* XXX swildner counters */ ena_reset_counters((counter_u64_t *)&adapter->hw_stats, sizeof(adapter->hw_stats)); #endif return (0); } static int ena_up(struct ena_adapter *adapter) { int rc = 0; if (unlikely(device_is_attached(adapter->pdev) == 0)) { device_printf(adapter->pdev, "device is not attached!\n"); return (ENXIO); } if (unlikely(!adapter->running)) { device_printf(adapter->pdev, "device is not running!\n"); return (ENXIO); } if (!adapter->up) { device_printf(adapter->pdev, "device is going UP\n"); /* setup interrupts for IO queues */ ena_setup_io_intr(adapter); rc = ena_request_io_irq(adapter); if (unlikely(rc != 0)) { ena_trace(ENA_ALERT, "err_req_irq"); goto err_req_irq; } /* allocate transmit descriptors */ rc = ena_setup_all_tx_resources(adapter); if (unlikely(rc != 0)) { ena_trace(ENA_ALERT, "err_setup_tx"); goto err_setup_tx; } /* allocate receive descriptors */ rc = ena_setup_all_rx_resources(adapter); if (unlikely(rc != 0)) { ena_trace(ENA_ALERT, "err_setup_rx"); goto err_setup_rx; } /* create IO queues for Rx & Tx */ rc = ena_create_io_queues(adapter); if (unlikely(rc != 0)) { ena_trace(ENA_ALERT, "create IO queues failed"); goto err_io_que; } if (unlikely(adapter->link_status)) { adapter->ifp->if_link_state = LINK_STATE_UP; if_link_state_change(adapter->ifp); } rc = ena_up_complete(adapter); if (unlikely(rc != 0)) goto err_up_complete; #if 0 /* XXX swildner counters */ counter_u64_add(adapter->dev_stats.interface_up, 1); #endif ena_update_hwassist(adapter); adapter->ifp->if_flags |= IFF_RUNNING; ifq_clr_oactive(&adapter->ifp->if_snd); callout_reset(&adapter->timer_service, hz, ena_timer_service, (void *)adapter); adapter->up = true; ena_unmask_all_io_irqs(adapter); } return (0); err_up_complete: ena_destroy_all_io_queues(adapter); err_io_que: ena_free_all_rx_resources(adapter); err_setup_rx: ena_free_all_tx_resources(adapter); err_setup_tx: ena_free_io_irq(adapter); err_req_irq: return (rc); } #if 0 /* XXX swildner counters */ static uint64_t ena_get_counter(if_t ifp, ift_counter cnt) { struct ena_adapter *adapter; struct ena_hw_stats *stats; adapter = ifp->if_softc; stats = &adapter->hw_stats; switch (cnt) { case IFCOUNTER_IPACKETS: return (counter_u64_fetch(stats->rx_packets)); case IFCOUNTER_OPACKETS: return (counter_u64_fetch(stats->tx_packets)); case IFCOUNTER_IBYTES: return (counter_u64_fetch(stats->rx_bytes)); case IFCOUNTER_OBYTES: return (counter_u64_fetch(stats->tx_bytes)); case IFCOUNTER_IQDROPS: return (counter_u64_fetch(stats->rx_drops)); default: return (if_get_counter_default(ifp, cnt)); } } #endif static int ena_media_change(if_t ifp) { /* Media Change is not supported by firmware */ return (0); } static void ena_media_status(if_t ifp, struct ifmediareq *ifmr) { struct ena_adapter *adapter = ifp->if_softc; ena_trace(ENA_DBG, "enter"); lockmgr(&adapter->global_lock, LK_EXCLUSIVE); ifmr->ifm_status = IFM_AVALID; ifmr->ifm_active = IFM_ETHER; if (!adapter->link_status) { lockmgr(&adapter->global_lock, LK_RELEASE); ena_trace(ENA_INFO, "link_status = false"); return; } ifmr->ifm_status |= IFM_ACTIVE; ifmr->ifm_active |= IFM_10G_T | IFM_FDX; lockmgr(&adapter->global_lock, LK_RELEASE); } static void ena_init(void *arg) { struct ena_adapter *adapter = (struct ena_adapter *)arg; if (!adapter->up) { lockmgr(&adapter->ioctl_lock, LK_EXCLUSIVE); ena_up(adapter); lockmgr(&adapter->ioctl_lock, LK_RELEASE); } } static int ena_ioctl(if_t ifp, u_long command, caddr_t data, struct ucred *cred) { struct ena_adapter *adapter; struct ifreq *ifr; int rc; adapter = ifp->if_softc; ifr = (struct ifreq *)data; /* * Acquiring lock to prevent from running up and down routines parallel. */ rc = 0; switch (command) { case SIOCSIFMTU: lockmgr(&adapter->ioctl_lock, LK_EXCLUSIVE); ena_down(adapter); ena_change_mtu(ifp, ifr->ifr_mtu); rc = ena_up(adapter); lockmgr(&adapter->ioctl_lock, LK_RELEASE); break; case SIOCSIFFLAGS: if ((ifp->if_flags & IFF_UP) != 0) { if ((ifp->if_flags & IFF_RUNNING) != 0) { if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) { device_printf(adapter->pdev, "ioctl promisc/allmulti\n"); } } else { lockmgr(&adapter->ioctl_lock, LK_EXCLUSIVE); rc = ena_up(adapter); lockmgr(&adapter->ioctl_lock, LK_RELEASE); } } else { if ((ifp->if_flags & IFF_RUNNING) != 0) { lockmgr(&adapter->ioctl_lock, LK_EXCLUSIVE); ena_down(adapter); lockmgr(&adapter->ioctl_lock, LK_RELEASE); } } break; case SIOCADDMULTI: case SIOCDELMULTI: break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: rc = ifmedia_ioctl(ifp, ifr, &adapter->media, command); break; case SIOCSIFCAP: { int reinit = 0; if (ifr->ifr_reqcap != ifp->if_capenable) { ifp->if_capenable = ifr->ifr_reqcap; reinit = 1; } if ((reinit != 0) && ((ifp->if_flags & IFF_RUNNING) != 0)) { lockmgr(&adapter->ioctl_lock, LK_EXCLUSIVE); ena_down(adapter); rc = ena_up(adapter); lockmgr(&adapter->ioctl_lock, LK_RELEASE); } } break; default: rc = ether_ioctl(ifp, command, data); break; } return (rc); } static int ena_get_dev_offloads(struct ena_com_dev_get_features_ctx *feat) { int caps = 0; if ((feat->offload.tx & (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK | ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK | ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK)) != 0) caps |= IFCAP_TXCSUM; if ((feat->offload.tx & (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_MASK | ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK)) != 0) caps |= IFCAP_TXCSUM; if ((feat->offload.tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK) != 0) caps |= IFCAP_TSO4; if ((feat->offload.tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_MASK) != 0) caps |= IFCAP_TSO6; if ((feat->offload.rx_supported & (ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK | ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L3_CSUM_IPV4_MASK)) != 0) caps |= IFCAP_RXCSUM; #if 0 if ((feat->offload.rx_supported & ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK) != 0) caps |= IFCAP_RXCSUM_IPV6; #endif #if 0 /* XXX LRO */ caps |= IFCAP_LRO; #endif caps |= IFCAP_JUMBO_MTU; return (caps); } static void ena_update_host_info(struct ena_admin_host_info *host_info, if_t ifp) { host_info->supported_network_features[0] = (uint32_t)ifp->if_capabilities; } static void ena_update_hwassist(struct ena_adapter *adapter) { if_t ifp = adapter->ifp; uint32_t feat = adapter->tx_offload_cap; int cap = ifp->if_capenable; int flags = 0; ifp->if_hwassist = 0; if ((cap & IFCAP_TXCSUM) != 0) { if ((feat & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK) != 0) flags |= CSUM_IP; if ((feat & (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK | ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK)) != 0) flags |= CSUM_UDP | CSUM_TCP; } #if 0 if ((cap & IFCAP_TXCSUM_IPV6) != 0) flags |= CSUM_IP6_UDP | CSUM_IP6_TCP; #endif if ((cap & IFCAP_TSO4) != 0 || (cap & IFCAP_TSO6) != 0) flags |= CSUM_TSO; ifp->if_hwassist |= flags; } static int ena_setup_ifnet(device_t pdev, struct ena_adapter *adapter, struct ena_com_dev_get_features_ctx *feat) { if_t ifp; int caps = 0; ifp = adapter->ifp = if_alloc(IFT_ETHER); if (unlikely(ifp == NULL)) { ena_trace(ENA_ALERT, "can not allocate ifnet structure\n"); return (ENXIO); } if_initname(ifp, device_get_name(pdev), device_get_unit(pdev)); ifp->if_softc = adapter; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_init = ena_init; ifp->if_start = ena_start_xmit; ifp->if_ioctl = ena_ioctl; #if 0 /* XXX swildner counter */ if_setgetcounterfn(ifp, ena_get_counter); #endif ifq_set_maxlen(&ifp->if_snd, adapter->tx_ring_size); ifq_set_ready(&ifp->if_snd); ifp->if_mtu = ETHERMTU; ifp->if_baudrate = 0; /* Zeroize capabilities... */ ifp->if_capabilities = 0; ifp->if_capenable = 0; /* check hardware support */ caps = ena_get_dev_offloads(feat); /* ... and set them */ //if_setcapabilitiesbit(ifp, caps, 0); ((struct ifnet *)ifp)->if_capabilities |= caps; ((struct ifnet *)ifp)->if_capabilities &= ~0; /* TSO parameters */ //ifp->if_hw_tsomax = ENA_TSO_MAXSIZE - // (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN); ifp->if_tsolen = adapter->max_tx_sgl_size - 1; //ifp->if_hw_tsomaxsegsize = ENA_TSO_MAXSIZE; ifp->if_hdrlen = sizeof(struct ether_vlan_header); ifp->if_capenable= ifp->if_capabilities; /* * Specify the media types supported by this adapter and register * callbacks to update media and link information */ ifmedia_init(&adapter->media, IFM_IMASK, ena_media_change, ena_media_status); ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL); ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO); ether_ifattach(ifp, adapter->mac_addr, NULL); return (0); } static void ena_down(struct ena_adapter *adapter) { int rc; if (adapter->up) { device_printf(adapter->pdev, "device is going DOWN\n"); callout_drain(&adapter->timer_service); adapter->up = false; ifq_set_oactive(&adapter->ifp->if_snd); adapter->ifp->if_flags &= ~IFF_RUNNING; ena_free_io_irq(adapter); if (adapter->trigger_reset) { rc = ena_com_dev_reset(adapter->ena_dev, adapter->reset_reason); if (unlikely(rc != 0)) device_printf(adapter->pdev, "Device reset failed\n"); } ena_destroy_all_io_queues(adapter); ena_free_all_tx_bufs(adapter); ena_free_all_rx_bufs(adapter); ena_free_all_tx_resources(adapter); ena_free_all_rx_resources(adapter); #if 0 /* XXX swildner counters */ counter_u64_add(adapter->dev_stats.interface_down, 1); #endif } } static void ena_tx_csum(struct ena_com_tx_ctx *ena_tx_ctx, struct mbuf *mbuf) { struct ena_com_tx_meta *ena_meta; struct ether_vlan_header *eh; u32 mss; bool offload; uint16_t etype; int ehdrlen; struct ip *ip; int iphlen; struct tcphdr *th; offload = false; ena_meta = &ena_tx_ctx->ena_meta; mss = mbuf->m_pkthdr.tso_segsz; if (mss != 0) offload = true; if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) != 0) offload = true; if ((mbuf->m_pkthdr.csum_flags & CSUM_OFFLOAD) != 0) offload = true; if (!offload) { ena_tx_ctx->meta_valid = 0; return; } /* Determine where frame payload starts. */ eh = mtod(mbuf, struct ether_vlan_header *); if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) { etype = ntohs(eh->evl_proto); ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; } else { etype = ntohs(eh->evl_encap_proto); ehdrlen = ETHER_HDR_LEN; } ip = (struct ip *)(mbuf->m_data + ehdrlen); iphlen = ip->ip_hl << 2; th = (struct tcphdr *)((caddr_t)ip + iphlen); if ((mbuf->m_pkthdr.csum_flags & CSUM_IP) != 0) { ena_tx_ctx->l3_csum_enable = 1; } if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) != 0) { ena_tx_ctx->tso_enable = 1; ena_meta->l4_hdr_len = (th->th_off); } switch (etype) { case ETHERTYPE_IP: ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV4; if ((ip->ip_off & htons(IP_DF)) != 0) ena_tx_ctx->df = 1; break; case ETHERTYPE_IPV6: ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV6; default: break; } if (ip->ip_p == IPPROTO_TCP) { ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_TCP; if ((mbuf->m_pkthdr.csum_flags & CSUM_TCP) != 0) ena_tx_ctx->l4_csum_enable = 1; else ena_tx_ctx->l4_csum_enable = 0; } else if (ip->ip_p == IPPROTO_UDP) { ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UDP; if ((mbuf->m_pkthdr.csum_flags & CSUM_UDP) != 0) ena_tx_ctx->l4_csum_enable = 1; else ena_tx_ctx->l4_csum_enable = 0; } else { ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UNKNOWN; ena_tx_ctx->l4_csum_enable = 0; } ena_meta->mss = mss; ena_meta->l3_hdr_len = iphlen; ena_meta->l3_hdr_offset = ehdrlen; ena_tx_ctx->meta_valid = 1; } static int ena_check_and_collapse_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf) { struct ena_adapter *adapter; struct mbuf *collapsed_mbuf; int num_frags; adapter = tx_ring->adapter; num_frags = ena_mbuf_count(*mbuf); /* One segment must be reserved for configuration descriptor. */ if (num_frags < adapter->max_tx_sgl_size) return (0); #if 0 /* XXX swildner counters */ counter_u64_add(tx_ring->tx_stats.collapse, 1); #endif collapsed_mbuf = m_defrag(*mbuf, M_NOWAIT); if (unlikely(collapsed_mbuf == NULL)) { IFNET_STAT_INC(tx_ring->adapter->ifp, oerrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(tx_ring->tx_stats.collapse_err, 1); #endif return (ENOMEM); } /* If mbuf was collapsed succesfully, original mbuf is released. */ *mbuf = collapsed_mbuf; return (0); } static int ena_xmit_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf) { struct ena_adapter *adapter; struct ena_tx_buffer *tx_info; struct ena_com_tx_ctx ena_tx_ctx; struct ena_com_dev *ena_dev; struct ena_com_buf *ena_buf; struct ena_com_io_sq* io_sq; bus_dma_segment_t segs[ENA_BUS_DMA_SEGS]; void *push_hdr; uint16_t next_to_use; uint16_t req_id; uint16_t push_len; uint16_t ena_qid; uint32_t len, nsegs, header_len; int i, rc; int nb_hw_desc; ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id); adapter = tx_ring->que->adapter; ena_dev = adapter->ena_dev; io_sq = &ena_dev->io_sq_queues[ena_qid]; //tx_ring is just used to grab the adapter rc = ena_check_and_collapse_mbuf(tx_ring, mbuf); if (unlikely(rc != 0)) { ena_trace(ENA_WARNING, "Failed to collapse mbuf! err: %d", rc); return (rc); } next_to_use = tx_ring->next_to_use; req_id = tx_ring->free_tx_ids[next_to_use]; tx_info = &tx_ring->tx_buffer_info[req_id]; tx_info->mbuf = *mbuf; tx_info->num_of_bufs = 0; ena_buf = tx_info->bufs; len = (*mbuf)->m_len; ena_trace(ENA_DBG | ENA_TXPTH, "Tx: %d bytes", (*mbuf)->m_pkthdr.len); push_len = 0; header_len = min_t(uint32_t, len, tx_ring->tx_max_header_size); push_hdr = NULL; rc = bus_dmamap_load_mbuf_segment(adapter->tx_buf_tag, tx_info->map, *mbuf, segs, adapter->max_tx_sgl_size, &nsegs, BUS_DMA_NOWAIT); if (unlikely((rc != 0) || (nsegs == 0))) { ena_trace(ENA_WARNING, "dmamap load failed! err: %d nsegs: %d", rc, nsegs); IFNET_STAT_INC(tx_ring->adapter->ifp, oerrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(tx_ring->tx_stats.dma_mapping_err, 1); #endif tx_info->mbuf = NULL; if (rc == ENOMEM) return (ENA_COM_NO_MEM); else return (ENA_COM_INVAL); } for (i = 0; i < nsegs; i++) { ena_buf->len = segs[i].ds_len; ena_buf->paddr = segs[i].ds_addr; ena_buf++; } tx_info->num_of_bufs = nsegs; memset(&ena_tx_ctx, 0x0, sizeof(struct ena_com_tx_ctx)); ena_tx_ctx.ena_bufs = tx_info->bufs; ena_tx_ctx.push_header = push_hdr; ena_tx_ctx.num_bufs = tx_info->num_of_bufs; ena_tx_ctx.req_id = req_id; ena_tx_ctx.header_len = header_len; /* Set flags and meta data */ ena_tx_csum(&ena_tx_ctx, *mbuf); /* Prepare the packet's descriptors and send them to device */ rc = ena_com_prepare_tx(io_sq, &ena_tx_ctx, &nb_hw_desc); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "failed to prepare tx bufs\n"); IFNET_STAT_INC(tx_ring->adapter->ifp, oerrors, 1); #if 0 /* XXX swildner counters */ counter_u64_add(tx_ring->tx_stats.prepare_ctx_err, 1); #endif goto dma_error; } IFNET_STAT_INC(tx_ring->adapter->ifp, opackets, 1); #if 0 /* XXX swildner counters */ counter_enter(); counter_u64_add_protected(tx_ring->tx_stats.cnt, 1); counter_u64_add_protected(tx_ring->tx_stats.bytes, (*mbuf)->m_pkthdr.len); counter_u64_add_protected(adapter->hw_stats.tx_packets, 1); counter_u64_add_protected(adapter->hw_stats.tx_bytes, (*mbuf)->m_pkthdr.len); counter_exit(); #endif tx_info->tx_descs = nb_hw_desc; getmicrouptime(&tx_info->timestamp); tx_info->print_once = true; tx_ring->next_to_use = ENA_TX_RING_IDX_NEXT(next_to_use, tx_ring->ring_size); bus_dmamap_sync(adapter->tx_buf_tag, tx_info->map, BUS_DMASYNC_PREWRITE); return (0); dma_error: tx_info->mbuf = NULL; bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map); return (rc); } static void ena_start_xmit(struct ifnet *ifp, struct ifaltq_subque *ifsq) { /* * TODO: Might need to initialize an ena_ring with the * ifaltq_subque in it */ struct ena_adapter *adapter = ifp->if_softc; struct ena_com_io_sq *io_sq; struct ena_ring *tx_ring; int ena_qid; int acum_pkts = 0; int ret = 0; if (unlikely((adapter->ifp->if_flags & IFF_RUNNING) == 0) || ifsq_is_oactive(ifsq)) { return; } /* Check is link_active and some other shit. If it is, purge. */ #if 0 if (unlikely(!adapter->link_status)) return; #endif io_sq = NULL; tx_ring = NULL; while (!ifsq_is_empty(ifsq)) { struct mbuf *m_head; int i; //Grab head from mbuf list m_head = ifsq_dequeue(ifsq); if (m_head == NULL) break; //pick the associated tx_ring based on hash i = m_head->m_pkthdr.hash % adapter->num_queues; tx_ring = &adapter->tx_ring[i]; ENA_RING_MTX_LOCK(tx_ring); ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id); io_sq = &adapter->ena_dev->io_sq_queues[ena_qid]; if (unlikely(!ena_com_sq_have_enough_space(io_sq, ENA_TX_CLEANUP_THRESHOLD))) ena_tx_cleanup(tx_ring); if (unlikely((ret = ena_xmit_mbuf(tx_ring, &m_head)) != 0)) { if (ret == ENA_COM_NO_MEM) { /* XXX put mbuf back on queue */ } else if (ret == ENA_COM_NO_SPACE) { /* XXX put mbuf back on queue */ } else { m_freem(m_head); /* XXX advance mbuf queue aka move it forward? */ } ENA_RING_MTX_UNLOCK(tx_ring); break; } //advance mbuf queue, might already be handled by dequeue #if 0 // dillon - wtf is this doing here? // NOT SURE WHAT TO DO WITH THIS CODE if (unlikely((adapter->ifp->if_flags & IFF_RUNNING) == 0)) return; // break here, not return. tx_ring locked #endif acum_pkts++; ENA_RING_MTX_UNLOCK(tx_ring); BPF_MTAP(adapter->ifp, m_head); if (unlikely(acum_pkts == DB_THRESHOLD)) { acum_pkts = 0; wmb(); /* Trigger the dma engine */ ena_com_write_sq_doorbell(io_sq); #if 0 /* XXX swildner counters */ counter_u64_add(tx_ring->tx_stats.doorbells, 1); #endif } } if (likely(acum_pkts != 0)) { wmb(); /* Trigger the dma engine */ ena_com_write_sq_doorbell(io_sq); #if 0 /* XXX swildner counters */ counter_u64_add(tx_ring->tx_stats.doorbells, 1); #endif } if (io_sq && !ena_com_sq_have_enough_space(io_sq, ENA_TX_CLEANUP_THRESHOLD)) { ENA_RING_MTX_LOCK(tx_ring); ena_tx_cleanup(tx_ring); ENA_RING_MTX_UNLOCK(tx_ring); } } static int ena_calc_io_queue_num(struct ena_adapter *adapter, struct ena_com_dev_get_features_ctx *get_feat_ctx) { int io_sq_num, io_cq_num, io_queue_num; io_sq_num = get_feat_ctx->max_queues.max_sq_num; io_cq_num = get_feat_ctx->max_queues.max_cq_num; io_queue_num = min_t(int, ncpus, ENA_MAX_NUM_IO_QUEUES); io_queue_num = min_t(int, io_queue_num, io_sq_num); io_queue_num = min_t(int, io_queue_num, io_cq_num); /* 1 IRQ for for mgmnt and 1 IRQ for each TX/RX pair */ io_queue_num = min_t(int, io_queue_num, pci_msix_count(adapter->pdev) - 1); #ifdef RSS io_queue_num = min_t(int, io_queue_num, rss_getnumbuckets()); #endif return (io_queue_num); } static int ena_calc_queue_size(struct ena_adapter *adapter, uint16_t *max_tx_sgl_size, uint16_t *max_rx_sgl_size, struct ena_com_dev_get_features_ctx *feat) { uint32_t queue_size = ENA_DEFAULT_RING_SIZE; uint32_t v; uint32_t q; queue_size = min_t(uint32_t, queue_size, feat->max_queues.max_cq_depth); queue_size = min_t(uint32_t, queue_size, feat->max_queues.max_sq_depth); /* round down to the nearest power of 2 */ v = queue_size; while (v != 0) { if (powerof2(queue_size) != 0) break; v /= 2; q = rounddown2(queue_size, v); if (q != 0) { queue_size = q; break; } } if (unlikely(queue_size == 0)) { device_printf(adapter->pdev, "Invalid queue size\n"); return (ENA_COM_FAULT); } *max_tx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS, feat->max_queues.max_packet_tx_descs); *max_rx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS, feat->max_queues.max_packet_rx_descs); return (queue_size); } static int ena_rss_init_default(struct ena_adapter *adapter) { struct ena_com_dev *ena_dev = adapter->ena_dev; device_t dev = adapter->pdev; int qid, rc, i; rc = ena_com_rss_init(ena_dev, ENA_RX_RSS_TABLE_LOG_SIZE); if (unlikely(rc != 0)) { device_printf(dev, "Cannot init indirect table\n"); return (rc); } for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) { #ifdef RSS qid = rss_get_indirection_to_bucket(i); qid = qid % adapter->num_queues; #else qid = i % adapter->num_queues; #endif rc = ena_com_indirect_table_fill_entry(ena_dev, i, ENA_IO_RXQ_IDX(qid)); if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) { device_printf(dev, "Cannot fill indirect table\n"); goto err_rss_destroy; } } rc = ena_com_fill_hash_function(ena_dev, ENA_ADMIN_CRC32, NULL, ENA_HASH_KEY_SIZE, 0xFFFFFFFF); if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) { device_printf(dev, "Cannot fill hash function\n"); goto err_rss_destroy; } rc = ena_com_set_default_hash_ctrl(ena_dev); if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) { device_printf(dev, "Cannot fill hash control\n"); goto err_rss_destroy; } return (0); err_rss_destroy: ena_com_rss_destroy(ena_dev); return (rc); } static void ena_rss_init_default_deferred(void *arg) { struct ena_adapter *adapter; devclass_t dc; int max; int rc; dc = devclass_find("ena"); if (unlikely(dc == NULL)) { ena_trace(ENA_ALERT, "No devclass ena\n"); return; } max = devclass_get_maxunit(dc); while (max-- >= 0) { adapter = devclass_get_softc(dc, max); if (adapter != NULL) { rc = ena_rss_init_default(adapter); adapter->rss_support = true; if (unlikely(rc != 0)) { device_printf(adapter->pdev, "WARNING: RSS was not properly initialized," " it will affect bandwidth\n"); adapter->rss_support = false; } } } } SYSINIT(ena_rss_init, SI_SUB_KICK_SCHEDULER, SI_ORDER_SECOND, ena_rss_init_default_deferred, NULL); static void ena_config_host_info(struct ena_com_dev *ena_dev) { struct ena_admin_host_info *host_info; int rc; /* Allocate only the host info */ rc = ena_com_allocate_host_info(ena_dev); if (unlikely(rc != 0)) { ena_trace(ENA_ALERT, "Cannot allocate host info\n"); return; } host_info = ena_dev->host_attr.host_info; host_info->os_type = ENA_ADMIN_OS_FREEBSD; host_info->kernel_ver = osreldate; ksprintf(host_info->kernel_ver_str, "%d", osreldate); host_info->os_dist = 0; strncpy(host_info->os_dist_str, osrelease, sizeof(host_info->os_dist_str) - 1); host_info->driver_version = (DRV_MODULE_VER_MAJOR) | (DRV_MODULE_VER_MINOR << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) | (DRV_MODULE_VER_SUBMINOR << ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT); rc = ena_com_set_host_attributes(ena_dev); if (unlikely(rc != 0)) { if (rc == EOPNOTSUPP) ena_trace(ENA_WARNING, "Cannot set host attributes\n"); else ena_trace(ENA_ALERT, "Cannot set host attributes\n"); goto err; } return; err: ena_com_delete_host_info(ena_dev); } static int ena_device_init(struct ena_adapter *adapter, device_t pdev, struct ena_com_dev_get_features_ctx *get_feat_ctx, int *wd_active) { struct ena_com_dev* ena_dev = adapter->ena_dev; bool readless_supported; uint32_t aenq_groups; int dma_width; int rc; rc = ena_com_mmio_reg_read_request_init(ena_dev); if (unlikely(rc != 0)) { device_printf(pdev, "failed to init mmio read less\n"); return (rc); } /* * The PCIe configuration space revision id indicate if mmio reg * read is disabled */ readless_supported = !(pci_get_revid(pdev) & ENA_MMIO_DISABLE_REG_READ); ena_com_set_mmio_read_mode(ena_dev, readless_supported); rc = ena_com_dev_reset(ena_dev, ENA_REGS_RESET_NORMAL); if (unlikely(rc != 0)) { device_printf(pdev, "Can not reset device\n"); goto err_mmio_read_less; } rc = ena_com_validate_version(ena_dev); if (unlikely(rc != 0)) { device_printf(pdev, "device version is too low\n"); goto err_mmio_read_less; } dma_width = ena_com_get_dma_width(ena_dev); if (unlikely(dma_width < 0)) { device_printf(pdev, "Invalid dma width value %d", dma_width); rc = dma_width; goto err_mmio_read_less; } adapter->dma_width = dma_width; /* ENA admin level init */ rc = ena_com_admin_init(ena_dev, &aenq_handlers, true); if (unlikely(rc != 0)) { device_printf(pdev, "Can not initialize ena admin queue with device\n"); goto err_mmio_read_less; } /* * To enable the msix interrupts the driver needs to know the number * of queues. So the driver uses polling mode to retrieve this * information */ ena_com_set_admin_polling_mode(ena_dev, true); ena_config_host_info(ena_dev); /* Get Device Attributes */ rc = ena_com_get_dev_attr_feat(ena_dev, get_feat_ctx); if (unlikely(rc != 0)) { device_printf(pdev, "Cannot get attribute for ena device rc: %d\n", rc); goto err_admin_init; } aenq_groups = BIT(ENA_ADMIN_LINK_CHANGE) | BIT(ENA_ADMIN_KEEP_ALIVE); aenq_groups &= get_feat_ctx->aenq.supported_groups; rc = ena_com_set_aenq_config(ena_dev, aenq_groups); if (unlikely(rc != 0)) { device_printf(pdev, "Cannot configure aenq groups rc: %d\n", rc); goto err_admin_init; } *wd_active = !!(aenq_groups & BIT(ENA_ADMIN_KEEP_ALIVE)); return (0); err_admin_init: ena_com_delete_host_info(ena_dev); ena_com_admin_destroy(ena_dev); err_mmio_read_less: ena_com_mmio_reg_read_request_destroy(ena_dev); return (rc); } static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *adapter, int io_vectors) { struct ena_com_dev *ena_dev = adapter->ena_dev; int rc; rc = ena_enable_msix(adapter); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "Error with MSI-X enablement\n"); return (rc); } ena_setup_mgmnt_intr(adapter); rc = ena_request_mgmnt_irq(adapter); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "Cannot setup mgmnt queue intr\n"); goto err_disable_msix; } pci_enable_msix(adapter->pdev); ena_com_set_admin_polling_mode(ena_dev, false); ena_com_admin_aenq_enable(ena_dev); return (0); err_disable_msix: ena_disable_msix(adapter); return (rc); } /* Function called on ENA_ADMIN_KEEP_ALIVE event */ static void ena_keep_alive_wd(void *adapter_data, struct ena_admin_aenq_entry *aenq_e) { struct ena_adapter *adapter = (struct ena_adapter *)adapter_data; struct ena_admin_aenq_keep_alive_desc *desc; struct timeval time; uint64_t rx_drops; desc = (struct ena_admin_aenq_keep_alive_desc *)aenq_e; rx_drops = ((uint64_t)desc->rx_drops_high << 32) | desc->rx_drops_low; IFNET_STAT_INC(adapter->ifp, iqdrops, 1); #if 0 /* XXX swildner counters */ counter_u64_zero(adapter->hw_stats.rx_drops); counter_u64_add(adapter->hw_stats.rx_drops, rx_drops); #endif getmicrouptime(&time); atomic_store_rel_64(&adapter->keep_alive_timestamp.tv_sec, time.tv_sec); } /* Check for keep alive expiration */ static void check_for_missing_keep_alive(struct ena_adapter *adapter) { struct timeval timestamp, time; if (adapter->wd_active == 0) return; if (likely(adapter->keep_alive_timeout == 0)) return; timestamp.tv_sec = atomic_load_acq_64(&adapter->keep_alive_timestamp.tv_sec); getmicrouptime(&time); timevalsub(&time, ×tamp); if (unlikely(time.tv_sec > adapter->keep_alive_timeout)) { device_printf(adapter->pdev, "Keep alive watchdog timeout.\n"); #if 0 /* XXX swildner counters */ counter_u64_add(adapter->dev_stats.wd_expired, 1); #endif adapter->reset_reason = ENA_REGS_RESET_KEEP_ALIVE_TO; adapter->trigger_reset = true; } } /* Check if admin queue is enabled */ static void check_for_admin_com_state(struct ena_adapter *adapter) { if (unlikely(ena_com_get_admin_running_state(adapter->ena_dev) == false)) { device_printf(adapter->pdev, "ENA admin queue is not in running state!\n"); #if 0 /* XXX swildner counters */ counter_u64_add(adapter->dev_stats.admin_q_pause, 1); #endif adapter->reset_reason = ENA_REGS_RESET_ADMIN_TO; adapter->trigger_reset = true; } } static int check_missing_comp_in_queue(struct ena_adapter *adapter, struct ena_ring *tx_ring) { struct timeval curtime, time; struct ena_tx_buffer *tx_buf; uint32_t missed_tx = 0; int i; getmicrouptime(&curtime); for (i = 0; i < tx_ring->ring_size; i++) { tx_buf = &tx_ring->tx_buffer_info[i]; if (timevalisset(&tx_buf->timestamp) == 0) continue; time = curtime; timevalsub(&time, &tx_buf->timestamp); /* Check again if packet is still waiting */ //WATCH: Might not be exactly comparable if (unlikely(time.tv_sec > adapter->missing_tx_timeout)) { if (!tx_buf->print_once) ena_trace(ENA_WARNING, "Found a Tx that wasn't " "completed on time, qid %d, index %d.\n", tx_ring->qid, i); tx_buf->print_once = true; missed_tx++; #if 0 /* XXX swildner counters */ counter_u64_add(tx_ring->tx_stats.missing_tx_comp, 1); #endif if (unlikely(missed_tx > adapter->missing_tx_threshold)) { device_printf(adapter->pdev, "The number of lost tx completion " "is above the threshold (%d > %d). " "Reset the device\n", missed_tx, adapter->missing_tx_threshold); adapter->reset_reason = ENA_REGS_RESET_MISS_TX_CMPL; adapter->trigger_reset = true; return (EIO); } } } return (0); } /* * Check for TX which were not completed on time. * Timeout is defined by "missing_tx_timeout". * Reset will be performed if number of incompleted * transactions exceeds "missing_tx_threshold". */ static void check_for_missing_tx_completions(struct ena_adapter *adapter) { struct ena_ring *tx_ring; int i, budget, rc; /* Make sure the driver doesn't turn the device in other process */ rmb(); if (!adapter->up) return; if (adapter->trigger_reset) return; if (adapter->missing_tx_timeout == 0) return; budget = adapter->missing_tx_max_queues; for (i = adapter->next_monitored_tx_qid; i < adapter->num_queues; i++) { tx_ring = &adapter->tx_ring[i]; rc = check_missing_comp_in_queue(adapter, tx_ring); if (unlikely(rc != 0)) return; budget--; if (budget == 0) { i++; break; } } adapter->next_monitored_tx_qid = i % adapter->num_queues; } /* trigger deferred rx cleanup after 2 consecutive detections */ #define EMPTY_RX_REFILL 2 /* For the rare case where the device runs out of Rx descriptors and the * msix handler failed to refill new Rx descriptors (due to a lack of memory * for example). * This case will lead to a deadlock: * The device won't send interrupts since all the new Rx packets will be dropped * The msix handler won't allocate new Rx descriptors so the device won't be * able to send new packets. * * When such a situation is detected - execute rx cleanup task in another thread */ static void check_for_empty_rx_ring(struct ena_adapter *adapter) { struct ena_ring *rx_ring; int i, refill_required; if (!adapter->up) return; if (adapter->trigger_reset) return; for (i = 0; i < adapter->num_queues; i++) { rx_ring = &adapter->rx_ring[i]; refill_required = ena_com_free_desc(rx_ring->ena_com_io_sq); if (unlikely(refill_required == (rx_ring->ring_size - 1))) { rx_ring->empty_rx_queue++; if (rx_ring->empty_rx_queue >= EMPTY_RX_REFILL) { #if 0 /* XXX swildner counters */ counter_u64_add(rx_ring->rx_stats.empty_rx_ring, 1); #endif device_printf(adapter->pdev, "trigger refill for ring %d\n", i); taskqueue_enqueue(rx_ring->cmpl_tq, &rx_ring->cmpl_task); rx_ring->empty_rx_queue = 0; } } else { rx_ring->empty_rx_queue = 0; } } } static void ena_timer_service(void *data) { struct ena_adapter *adapter = (struct ena_adapter *)data; struct ena_admin_host_info *host_info = adapter->ena_dev->host_attr.host_info; check_for_missing_keep_alive(adapter); check_for_admin_com_state(adapter); check_for_missing_tx_completions(adapter); check_for_empty_rx_ring(adapter); if (host_info != NULL) ena_update_host_info(host_info, adapter->ifp); if (unlikely(adapter->trigger_reset)) { device_printf(adapter->pdev, "Trigger reset is on\n"); taskqueue_enqueue(adapter->reset_tq, &adapter->reset_task); return; } /* * Schedule another timeout one second from now. */ /* XXX swildner callout_schedule_sbt(&adapter->timer_service, SBT_1S, SBT_1S, 0); */ callout_reset(&adapter->timer_service, hz, ena_timer_service, (void *)adapter); } static void ena_reset_task(void *arg, int pending) { struct ena_com_dev_get_features_ctx get_feat_ctx; struct ena_adapter *adapter = (struct ena_adapter *)arg; struct ena_com_dev *ena_dev = adapter->ena_dev; bool dev_up; int rc; if (unlikely(!adapter->trigger_reset)) { device_printf(adapter->pdev, "device reset scheduled but trigger_reset is off\n"); return; } lockmgr(&adapter->ioctl_lock, LK_EXCLUSIVE); callout_drain(&adapter->timer_service); dev_up = adapter->up; ena_com_set_admin_running_state(ena_dev, false); ena_down(adapter); ena_free_mgmnt_irq(adapter); ena_disable_msix(adapter); ena_com_abort_admin_commands(ena_dev); ena_com_wait_for_abort_completion(ena_dev); ena_com_admin_destroy(ena_dev); ena_com_mmio_reg_read_request_destroy(ena_dev); adapter->reset_reason = ENA_REGS_RESET_NORMAL; adapter->trigger_reset = false; /* Finished destroy part. Restart the device */ rc = ena_device_init(adapter, adapter->pdev, &get_feat_ctx, &adapter->wd_active); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "ENA device init failed! (err: %d)\n", rc); goto err_dev_free; } rc = ena_enable_msix_and_set_admin_interrupts(adapter, adapter->num_queues); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "Enable MSI-X failed\n"); goto err_com_free; } /* If the interface was up before the reset bring it up */ if (dev_up) { rc = ena_up(adapter); if (unlikely(rc != 0)) { device_printf(adapter->pdev, "Failed to create I/O queues\n"); goto err_msix_free; } } callout_reset(&adapter->timer_service, hz, ena_timer_service, (void *)adapter); lockmgr(&adapter->ioctl_lock, LK_RELEASE); return; err_msix_free: ena_free_mgmnt_irq(adapter); ena_disable_msix(adapter); err_com_free: ena_com_admin_destroy(ena_dev); err_dev_free: device_printf(adapter->pdev, "ENA reset failed!\n"); adapter->running = false; lockmgr(&adapter->ioctl_lock, LK_RELEASE); } /** * ena_attach - Device Initialization Routine * @pdev: device information struct * * Returns 0 on success, otherwise on failure. * * ena_attach initializes an adapter identified by a device structure. * The OS initialization, configuring of the adapter private structure, * and a hardware reset occur. **/ static int ena_attach(device_t pdev) { struct ena_com_dev_get_features_ctx get_feat_ctx; static int version_printed; struct ena_adapter *adapter; struct ena_com_dev *ena_dev = NULL; uint16_t tx_sgl_size = 0; uint16_t rx_sgl_size = 0; int io_queue_num; int queue_size; int rc; adapter = device_get_softc(pdev); adapter->pdev = pdev; lockinit(&adapter->global_lock, "ENA global mtx", 0, LK_CANRECURSE); lockinit(&adapter->ioctl_lock, "ENA ioctl sx", 0, LK_CANRECURSE); /* Set up the timer service */ callout_init_lk(&adapter->timer_service, &adapter->global_lock); adapter->keep_alive_timeout = DEFAULT_KEEP_ALIVE_TO; adapter->missing_tx_timeout = DEFAULT_TX_CMP_TO; adapter->missing_tx_max_queues = DEFAULT_TX_MONITORED_QUEUES; adapter->missing_tx_threshold = DEFAULT_TX_CMP_THRESHOLD; if (version_printed++ == 0) device_printf(pdev, "%s\n", ena_version); rc = ena_allocate_pci_resources(adapter); if (unlikely(rc != 0)) { device_printf(pdev, "PCI resource allocation failed!\n"); ena_free_pci_resources(adapter); return (rc); } /* Allocate memory for ena_dev structure */ ena_dev = kmalloc(sizeof(struct ena_com_dev), M_DEVBUF, M_WAITOK | M_ZERO); adapter->ena_dev = ena_dev; ena_dev->dmadev = pdev; ena_dev->bus = kmalloc(sizeof(struct ena_bus), M_DEVBUF, M_WAITOK | M_ZERO); /* Store register resources */ ((struct ena_bus*)(ena_dev->bus))->reg_bar_t = rman_get_bustag(adapter->registers); ((struct ena_bus*)(ena_dev->bus))->reg_bar_h = rman_get_bushandle(adapter->registers); if (unlikely(((struct ena_bus*)(ena_dev->bus))->reg_bar_h == 0)) { device_printf(pdev, "failed to pmap registers bar\n"); rc = ENXIO; goto err_bus_free; } ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; /* Device initialization */ rc = ena_device_init(adapter, pdev, &get_feat_ctx, &adapter->wd_active); if (unlikely(rc != 0)) { device_printf(pdev, "ENA device init failed! (err: %d)\n", rc); rc = ENXIO; goto err_bus_free; } getmicrouptime(&adapter->keep_alive_timestamp); adapter->tx_offload_cap = get_feat_ctx.offload.tx; /* Set for sure that interface is not up */ adapter->up = false; memcpy(adapter->mac_addr, get_feat_ctx.dev_attr.mac_addr, ETHER_ADDR_LEN); /* calculate IO queue number to create */ io_queue_num = ena_calc_io_queue_num(adapter, &get_feat_ctx); ENA_ASSERT(io_queue_num > 0, "Invalid queue number: %d\n", io_queue_num); adapter->num_queues = io_queue_num; adapter->max_mtu = get_feat_ctx.dev_attr.max_mtu; /* calculatre ring sizes */ queue_size = ena_calc_queue_size(adapter,&tx_sgl_size, &rx_sgl_size, &get_feat_ctx); if (unlikely((queue_size <= 0) || (io_queue_num <= 0))) { rc = ENA_COM_FAULT; goto err_com_free; } adapter->reset_reason = ENA_REGS_RESET_NORMAL; adapter->tx_ring_size = queue_size; adapter->rx_ring_size = queue_size; adapter->max_tx_sgl_size = tx_sgl_size; adapter->max_rx_sgl_size = rx_sgl_size; /* set up dma tags for rx and tx buffers */ rc = ena_setup_tx_dma_tag(adapter); if (unlikely(rc != 0)) { device_printf(pdev, "Failed to create TX DMA tag\n"); goto err_com_free; } rc = ena_setup_rx_dma_tag(adapter); if (unlikely(rc != 0)) { device_printf(pdev, "Failed to create RX DMA tag\n"); goto err_tx_tag_free; } /* initialize rings basic information */ device_printf(pdev, "initialize %d io queues\n", io_queue_num); ena_init_io_rings(adapter); /* setup network interface */ rc = ena_setup_ifnet(pdev, adapter, &get_feat_ctx); if (unlikely(rc != 0)) { device_printf(pdev, "Error with network interface setup\n"); goto err_io_free; } rc = ena_enable_msix_and_set_admin_interrupts(adapter, io_queue_num); if (unlikely(rc != 0)) { device_printf(pdev, "Failed to enable and set the admin interrupts\n"); goto err_ifp_free; } /* Initialize reset task queue */ TASK_INIT(&adapter->reset_task, 0, ena_reset_task, adapter); adapter->reset_tq = taskqueue_create("ena_reset_enqueue", M_WAITOK | M_ZERO, taskqueue_thread_enqueue, &adapter->reset_tq); taskqueue_start_threads(&adapter->reset_tq, 1, TDPRI_KERN_DAEMON, -1, "%s rstq", device_get_nameunit(adapter->pdev)); /* Initialize statistics */ #if 0 /* XXX swildner counters */ ena_alloc_counters((counter_u64_t *)&adapter->dev_stats, sizeof(struct ena_stats_dev)); ena_alloc_counters((counter_u64_t *)&adapter->hw_stats, sizeof(struct ena_hw_stats)); #endif ena_sysctl_add_nodes(adapter); /* Tell the stack that the interface is not active */ ifq_set_oactive(&adapter->ifp->if_snd); adapter->ifp->if_flags &= ~IFF_RUNNING; adapter->running = true; return (0); err_ifp_free: if_detach(adapter->ifp); if_free(adapter->ifp); err_io_free: ena_free_all_io_rings_resources(adapter); ena_free_rx_dma_tag(adapter); err_tx_tag_free: ena_free_tx_dma_tag(adapter); err_com_free: ena_com_admin_destroy(ena_dev); ena_com_delete_host_info(ena_dev); ena_com_mmio_reg_read_request_destroy(ena_dev); err_bus_free: kfree(ena_dev->bus, M_DEVBUF); kfree(ena_dev, M_DEVBUF); ena_free_pci_resources(adapter); return (rc); } /** * ena_detach - Device Removal Routine * @pdev: device information struct * * ena_detach is called by the device subsystem to alert the driver * that it should release a PCI device. **/ static int ena_detach(device_t pdev) { struct ena_adapter *adapter = device_get_softc(pdev); struct ena_com_dev *ena_dev = adapter->ena_dev; int rc; /* Make sure VLANS are not using driver */ if (adapter->ifp->if_vlantrunks != NULL) { device_printf(adapter->pdev ,"VLAN is in use, detach first\n"); return (EBUSY); } /* Free reset task and callout */ callout_drain(&adapter->timer_service); while (taskqueue_cancel(adapter->reset_tq, &adapter->reset_task, NULL)) taskqueue_drain(adapter->reset_tq, &adapter->reset_task); taskqueue_free(adapter->reset_tq); lockmgr(&adapter->ioctl_lock, LK_EXCLUSIVE); ena_down(adapter); lockmgr(&adapter->ioctl_lock, LK_RELEASE); if (adapter->ifp != NULL) { ether_ifdetach(adapter->ifp); if_free(adapter->ifp); } ena_free_all_io_rings_resources(adapter); #if 0 /* XXX swildner counters */ ena_free_counters((counter_u64_t *)&adapter->hw_stats, sizeof(struct ena_hw_stats)); ena_free_counters((counter_u64_t *)&adapter->dev_stats, sizeof(struct ena_stats_dev)); #endif if (likely(adapter->rss_support)) ena_com_rss_destroy(ena_dev); rc = ena_free_rx_dma_tag(adapter); if (unlikely(rc != 0)) device_printf(adapter->pdev, "Unmapped RX DMA tag associations\n"); rc = ena_free_tx_dma_tag(adapter); if (unlikely(rc != 0)) device_printf(adapter->pdev, "Unmapped TX DMA tag associations\n"); /* Reset the device only if the device is running. */ if (adapter->running) ena_com_dev_reset(ena_dev, adapter->reset_reason); ena_com_delete_host_info(ena_dev); ena_free_irqs(adapter); ena_com_abort_admin_commands(ena_dev); ena_com_wait_for_abort_completion(ena_dev); ena_com_admin_destroy(ena_dev); ena_com_mmio_reg_read_request_destroy(ena_dev); ena_free_pci_resources(adapter); lockuninit(&adapter->global_lock); lockuninit(&adapter->ioctl_lock); if (ena_dev->bus != NULL) kfree(ena_dev->bus, M_DEVBUF); if (ena_dev != NULL) kfree(ena_dev, M_DEVBUF); return (bus_generic_detach(pdev)); } /****************************************************************************** ******************************** AENQ Handlers ******************************* *****************************************************************************/ /** * ena_update_on_link_change: * Notify the network interface about the change in link status **/ static void ena_update_on_link_change(void *adapter_data, struct ena_admin_aenq_entry *aenq_e) { struct ena_adapter *adapter = (struct ena_adapter *)adapter_data; struct ena_admin_aenq_link_change_desc *aenq_desc; int status; if_t ifp; aenq_desc = (struct ena_admin_aenq_link_change_desc *)aenq_e; ifp = adapter->ifp; status = aenq_desc->flags & ENA_ADMIN_AENQ_LINK_CHANGE_DESC_LINK_STATUS_MASK; if (status != 0) { device_printf(adapter->pdev, "link is UP\n"); ifp->if_link_state = LINK_STATE_UP; if_link_state_change(ifp); } else if (status == 0) { device_printf(adapter->pdev, "link is DOWN\n"); ifp->if_link_state = LINK_STATE_DOWN; if_link_state_change(ifp); } else { device_printf(adapter->pdev, "invalid value recvd\n"); BUG(); } adapter->link_status = status; } /** * This handler will called for unknown event group or unimplemented handlers **/ static void unimplemented_aenq_handler(void *data, struct ena_admin_aenq_entry *aenq_e) { return; } static struct ena_aenq_handlers aenq_handlers = { .handlers = { [ENA_ADMIN_LINK_CHANGE] = ena_update_on_link_change, [ENA_ADMIN_KEEP_ALIVE] = ena_keep_alive_wd, }, .unimplemented_handler = unimplemented_aenq_handler }; /********************************************************************* * FreeBSD Device Interface Entry Points *********************************************************************/ static device_method_t ena_methods[] = { /* Device interface */ DEVMETHOD(device_probe, ena_probe), DEVMETHOD(device_attach, ena_attach), DEVMETHOD(device_detach, ena_detach), DEVMETHOD_END }; static driver_t ena_driver = { "ena", ena_methods, sizeof(struct ena_adapter), }; devclass_t ena_devclass; DRIVER_MODULE(ena, pci, ena_driver, ena_devclass, NULL, NULL); MODULE_DEPEND(ena, pci, 1, 1, 1); MODULE_DEPEND(ena, ether, 1, 1, 1); /*********************************************************************/ |