| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Rasesh Mody | 16732 | 91.22% | 36 | 34.95% |
| Jing Huang | 524 | 2.86% | 3 | 2.91% |
| Ivan Vecera | 521 | 2.84% | 11 | 10.68% |
| Kees Cook | 107 | 0.58% | 2 | 1.94% |
| Krishna Gudipati | 102 | 0.56% | 2 | 1.94% |
| Stephen Hemminger | 66 | 0.36% | 5 | 4.85% |
| Eric Dumazet | 63 | 0.34% | 8 | 7.77% |
| Jiri Pirko | 50 | 0.27% | 3 | 2.91% |
| Michał Mirosław | 30 | 0.16% | 1 | 0.97% |
| Alexander Gordeev | 20 | 0.11% | 1 | 0.97% |
| Jarod Wilson | 15 | 0.08% | 1 | 0.97% |
| Patrick McHardy | 15 | 0.08% | 3 | 2.91% |
| Vlad Yasevich | 13 | 0.07% | 1 | 0.97% |
| Wei Yongjun | 9 | 0.05% | 1 | 0.97% |
| Shyam Iyer | 8 | 0.04% | 2 | 1.94% |
| Eric W. Biedermann | 8 | 0.04% | 1 | 0.97% |
| Joe Perches | 7 | 0.04% | 2 | 1.94% |
| Paul Gortmaker | 6 | 0.03% | 2 | 1.94% |
| Benoit Taine | 6 | 0.03% | 1 | 0.97% |
| David S. Miller | 6 | 0.03% | 1 | 0.97% |
| Benjamin Poirier | 4 | 0.02% | 1 | 0.97% |
| Ben Hutchings | 4 | 0.02% | 1 | 0.97% |
| Jiri Slaby | 3 | 0.02% | 1 | 0.97% |
| Peter Zijlstra | 3 | 0.02% | 1 | 0.97% |
| François Romieu | 3 | 0.02% | 1 | 0.97% |
| Christophe Jaillet | 3 | 0.02% | 1 | 0.97% |
| Dan Carpenter | 3 | 0.02% | 1 | 0.97% |
| Jakub Kiciński | 2 | 0.01% | 1 | 0.97% |
| Thomas Gleixner | 2 | 0.01% | 1 | 0.97% |
| Ian Campbell | 2 | 0.01% | 1 | 0.97% |
| Sean Gloumeau | 1 | 0.01% | 1 | 0.97% |
| Russell King | 1 | 0.01% | 1 | 0.97% |
| Rusty Russell | 1 | 0.01% | 1 | 0.97% |
| Christoph Hellwig | 1 | 0.01% | 1 | 0.97% |
| Matthew Wilcox | 1 | 0.01% | 1 | 0.97% |
| Heiner Kallweit | 1 | 0.01% | 1 | 0.97% |
| Total | 18343 | 103 |
// SPDX-License-Identifier: GPL-2.0-only /* * Linux network driver for QLogic BR-series Converged Network Adapter. */ /* * Copyright (c) 2005-2014 Brocade Communications Systems, Inc. * Copyright (c) 2014-2015 QLogic Corporation * All rights reserved * www.qlogic.com */ #include <linux/bitops.h> #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/etherdevice.h> #include <linux/in.h> #include <linux/ethtool.h> #include <linux/if_vlan.h> #include <linux/if_ether.h> #include <linux/ip.h> #include <linux/prefetch.h> #include <linux/module.h> #include "bnad.h" #include "bna.h" #include "cna.h" static DEFINE_MUTEX(bnad_fwimg_mutex); /* * Module params */ static uint bnad_msix_disable; module_param(bnad_msix_disable, uint, 0444); MODULE_PARM_DESC(bnad_msix_disable, "Disable MSIX mode"); static uint bnad_ioc_auto_recover = 1; module_param(bnad_ioc_auto_recover, uint, 0444); MODULE_PARM_DESC(bnad_ioc_auto_recover, "Enable / Disable auto recovery"); static uint bna_debugfs_enable = 1; module_param(bna_debugfs_enable, uint, 0644); MODULE_PARM_DESC(bna_debugfs_enable, "Enables debugfs feature, default=1," " Range[false:0|true:1]"); /* * Global variables */ static u32 bnad_rxqs_per_cq = 2; static atomic_t bna_id; static const u8 bnad_bcast_addr[] __aligned(2) = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; /* * Local MACROS */ #define BNAD_GET_MBOX_IRQ(_bnad) \ (((_bnad)->cfg_flags & BNAD_CF_MSIX) ? \ ((_bnad)->msix_table[BNAD_MAILBOX_MSIX_INDEX].vector) : \ ((_bnad)->pcidev->irq)) #define BNAD_FILL_UNMAPQ_MEM_REQ(_res_info, _num, _size) \ do { \ (_res_info)->res_type = BNA_RES_T_MEM; \ (_res_info)->res_u.mem_info.mem_type = BNA_MEM_T_KVA; \ (_res_info)->res_u.mem_info.num = (_num); \ (_res_info)->res_u.mem_info.len = (_size); \ } while (0) /* * Reinitialize completions in CQ, once Rx is taken down */ static void bnad_cq_cleanup(struct bnad *bnad, struct bna_ccb *ccb) { struct bna_cq_entry *cmpl; int i; for (i = 0; i < ccb->q_depth; i++) { cmpl = &((struct bna_cq_entry *)ccb->sw_q)[i]; cmpl->valid = 0; } } /* Tx Datapath functions */ /* Caller should ensure that the entry at unmap_q[index] is valid */ static u32 bnad_tx_buff_unmap(struct bnad *bnad, struct bnad_tx_unmap *unmap_q, u32 q_depth, u32 index) { struct bnad_tx_unmap *unmap; struct sk_buff *skb; int vector, nvecs; unmap = &unmap_q[index]; nvecs = unmap->nvecs; skb = unmap->skb; unmap->skb = NULL; unmap->nvecs = 0; dma_unmap_single(&bnad->pcidev->dev, dma_unmap_addr(&unmap->vectors[0], dma_addr), skb_headlen(skb), DMA_TO_DEVICE); dma_unmap_addr_set(&unmap->vectors[0], dma_addr, 0); nvecs--; vector = 0; while (nvecs) { vector++; if (vector == BFI_TX_MAX_VECTORS_PER_WI) { vector = 0; BNA_QE_INDX_INC(index, q_depth); unmap = &unmap_q[index]; } dma_unmap_page(&bnad->pcidev->dev, dma_unmap_addr(&unmap->vectors[vector], dma_addr), dma_unmap_len(&unmap->vectors[vector], dma_len), DMA_TO_DEVICE); dma_unmap_addr_set(&unmap->vectors[vector], dma_addr, 0); nvecs--; } BNA_QE_INDX_INC(index, q_depth); return index; } /* * Frees all pending Tx Bufs * At this point no activity is expected on the Q, * so DMA unmap & freeing is fine. */ static void bnad_txq_cleanup(struct bnad *bnad, struct bna_tcb *tcb) { struct bnad_tx_unmap *unmap_q = tcb->unmap_q; struct sk_buff *skb; int i; for (i = 0; i < tcb->q_depth; i++) { skb = unmap_q[i].skb; if (!skb) continue; bnad_tx_buff_unmap(bnad, unmap_q, tcb->q_depth, i); dev_kfree_skb_any(skb); } } /* * bnad_txcmpl_process : Frees the Tx bufs on Tx completion * Can be called in a) Interrupt context * b) Sending context */ static u32 bnad_txcmpl_process(struct bnad *bnad, struct bna_tcb *tcb) { u32 sent_packets = 0, sent_bytes = 0; u32 wis, unmap_wis, hw_cons, cons, q_depth; struct bnad_tx_unmap *unmap_q = tcb->unmap_q; struct bnad_tx_unmap *unmap; struct sk_buff *skb; /* Just return if TX is stopped */ if (!test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) return 0; hw_cons = *(tcb->hw_consumer_index); rmb(); cons = tcb->consumer_index; q_depth = tcb->q_depth; wis = BNA_Q_INDEX_CHANGE(cons, hw_cons, q_depth); BUG_ON(!(wis <= BNA_QE_IN_USE_CNT(tcb, tcb->q_depth))); while (wis) { unmap = &unmap_q[cons]; skb = unmap->skb; sent_packets++; sent_bytes += skb->len; unmap_wis = BNA_TXQ_WI_NEEDED(unmap->nvecs); wis -= unmap_wis; cons = bnad_tx_buff_unmap(bnad, unmap_q, q_depth, cons); dev_kfree_skb_any(skb); } /* Update consumer pointers. */ tcb->consumer_index = hw_cons; tcb->txq->tx_packets += sent_packets; tcb->txq->tx_bytes += sent_bytes; return sent_packets; } static u32 bnad_tx_complete(struct bnad *bnad, struct bna_tcb *tcb) { struct net_device *netdev = bnad->netdev; u32 sent = 0; if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) return 0; sent = bnad_txcmpl_process(bnad, tcb); if (sent) { if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev) && BNA_QE_FREE_CNT(tcb, tcb->q_depth) >= BNAD_NETIF_WAKE_THRESHOLD) { if (test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) { netif_wake_queue(netdev); BNAD_UPDATE_CTR(bnad, netif_queue_wakeup); } } } if (likely(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) bna_ib_ack(tcb->i_dbell, sent); smp_mb__before_atomic(); clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); return sent; } /* MSIX Tx Completion Handler */ static irqreturn_t bnad_msix_tx(int irq, void *data) { struct bna_tcb *tcb = (struct bna_tcb *)data; struct bnad *bnad = tcb->bnad; bnad_tx_complete(bnad, tcb); return IRQ_HANDLED; } static inline void bnad_rxq_alloc_uninit(struct bnad *bnad, struct bna_rcb *rcb) { struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; unmap_q->reuse_pi = -1; unmap_q->alloc_order = -1; unmap_q->map_size = 0; unmap_q->type = BNAD_RXBUF_NONE; } /* Default is page-based allocation. Multi-buffer support - TBD */ static int bnad_rxq_alloc_init(struct bnad *bnad, struct bna_rcb *rcb) { struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; int order; bnad_rxq_alloc_uninit(bnad, rcb); order = get_order(rcb->rxq->buffer_size); unmap_q->type = BNAD_RXBUF_PAGE; if (bna_is_small_rxq(rcb->id)) { unmap_q->alloc_order = 0; unmap_q->map_size = rcb->rxq->buffer_size; } else { if (rcb->rxq->multi_buffer) { unmap_q->alloc_order = 0; unmap_q->map_size = rcb->rxq->buffer_size; unmap_q->type = BNAD_RXBUF_MULTI_BUFF; } else { unmap_q->alloc_order = order; unmap_q->map_size = (rcb->rxq->buffer_size > 2048) ? PAGE_SIZE << order : 2048; } } BUG_ON((PAGE_SIZE << order) % unmap_q->map_size); return 0; } static inline void bnad_rxq_cleanup_page(struct bnad *bnad, struct bnad_rx_unmap *unmap) { if (!unmap->page) return; dma_unmap_page(&bnad->pcidev->dev, dma_unmap_addr(&unmap->vector, dma_addr), unmap->vector.len, DMA_FROM_DEVICE); put_page(unmap->page); unmap->page = NULL; dma_unmap_addr_set(&unmap->vector, dma_addr, 0); unmap->vector.len = 0; } static inline void bnad_rxq_cleanup_skb(struct bnad *bnad, struct bnad_rx_unmap *unmap) { if (!unmap->skb) return; dma_unmap_single(&bnad->pcidev->dev, dma_unmap_addr(&unmap->vector, dma_addr), unmap->vector.len, DMA_FROM_DEVICE); dev_kfree_skb_any(unmap->skb); unmap->skb = NULL; dma_unmap_addr_set(&unmap->vector, dma_addr, 0); unmap->vector.len = 0; } static void bnad_rxq_cleanup(struct bnad *bnad, struct bna_rcb *rcb) { struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; int i; for (i = 0; i < rcb->q_depth; i++) { struct bnad_rx_unmap *unmap = &unmap_q->unmap[i]; if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) bnad_rxq_cleanup_skb(bnad, unmap); else bnad_rxq_cleanup_page(bnad, unmap); } bnad_rxq_alloc_uninit(bnad, rcb); } static u32 bnad_rxq_refill_page(struct bnad *bnad, struct bna_rcb *rcb, u32 nalloc) { u32 alloced, prod, q_depth; struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; struct bnad_rx_unmap *unmap, *prev; struct bna_rxq_entry *rxent; struct page *page; u32 page_offset, alloc_size; dma_addr_t dma_addr; prod = rcb->producer_index; q_depth = rcb->q_depth; alloc_size = PAGE_SIZE << unmap_q->alloc_order; alloced = 0; while (nalloc--) { unmap = &unmap_q->unmap[prod]; if (unmap_q->reuse_pi < 0) { page = alloc_pages(GFP_ATOMIC | __GFP_COMP, unmap_q->alloc_order); page_offset = 0; } else { prev = &unmap_q->unmap[unmap_q->reuse_pi]; page = prev->page; page_offset = prev->page_offset + unmap_q->map_size; get_page(page); } if (unlikely(!page)) { BNAD_UPDATE_CTR(bnad, rxbuf_alloc_failed); rcb->rxq->rxbuf_alloc_failed++; goto finishing; } dma_addr = dma_map_page(&bnad->pcidev->dev, page, page_offset, unmap_q->map_size, DMA_FROM_DEVICE); if (dma_mapping_error(&bnad->pcidev->dev, dma_addr)) { put_page(page); BNAD_UPDATE_CTR(bnad, rxbuf_map_failed); rcb->rxq->rxbuf_map_failed++; goto finishing; } unmap->page = page; unmap->page_offset = page_offset; dma_unmap_addr_set(&unmap->vector, dma_addr, dma_addr); unmap->vector.len = unmap_q->map_size; page_offset += unmap_q->map_size; if (page_offset < alloc_size) unmap_q->reuse_pi = prod; else unmap_q->reuse_pi = -1; rxent = &((struct bna_rxq_entry *)rcb->sw_q)[prod]; BNA_SET_DMA_ADDR(dma_addr, &rxent->host_addr); BNA_QE_INDX_INC(prod, q_depth); alloced++; } finishing: if (likely(alloced)) { rcb->producer_index = prod; smp_mb(); if (likely(test_bit(BNAD_RXQ_POST_OK, &rcb->flags))) bna_rxq_prod_indx_doorbell(rcb); } return alloced; } static u32 bnad_rxq_refill_skb(struct bnad *bnad, struct bna_rcb *rcb, u32 nalloc) { u32 alloced, prod, q_depth, buff_sz; struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; struct bnad_rx_unmap *unmap; struct bna_rxq_entry *rxent; struct sk_buff *skb; dma_addr_t dma_addr; buff_sz = rcb->rxq->buffer_size; prod = rcb->producer_index; q_depth = rcb->q_depth; alloced = 0; while (nalloc--) { unmap = &unmap_q->unmap[prod]; skb = netdev_alloc_skb_ip_align(bnad->netdev, buff_sz); if (unlikely(!skb)) { BNAD_UPDATE_CTR(bnad, rxbuf_alloc_failed); rcb->rxq->rxbuf_alloc_failed++; goto finishing; } dma_addr = dma_map_single(&bnad->pcidev->dev, skb->data, buff_sz, DMA_FROM_DEVICE); if (dma_mapping_error(&bnad->pcidev->dev, dma_addr)) { dev_kfree_skb_any(skb); BNAD_UPDATE_CTR(bnad, rxbuf_map_failed); rcb->rxq->rxbuf_map_failed++; goto finishing; } unmap->skb = skb; dma_unmap_addr_set(&unmap->vector, dma_addr, dma_addr); unmap->vector.len = buff_sz; rxent = &((struct bna_rxq_entry *)rcb->sw_q)[prod]; BNA_SET_DMA_ADDR(dma_addr, &rxent->host_addr); BNA_QE_INDX_INC(prod, q_depth); alloced++; } finishing: if (likely(alloced)) { rcb->producer_index = prod; smp_mb(); if (likely(test_bit(BNAD_RXQ_POST_OK, &rcb->flags))) bna_rxq_prod_indx_doorbell(rcb); } return alloced; } static inline void bnad_rxq_post(struct bnad *bnad, struct bna_rcb *rcb) { struct bnad_rx_unmap_q *unmap_q = rcb->unmap_q; u32 to_alloc; to_alloc = BNA_QE_FREE_CNT(rcb, rcb->q_depth); if (!(to_alloc >> BNAD_RXQ_REFILL_THRESHOLD_SHIFT)) return; if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) bnad_rxq_refill_skb(bnad, rcb, to_alloc); else bnad_rxq_refill_page(bnad, rcb, to_alloc); } #define flags_cksum_prot_mask (BNA_CQ_EF_IPV4 | BNA_CQ_EF_L3_CKSUM_OK | \ BNA_CQ_EF_IPV6 | \ BNA_CQ_EF_TCP | BNA_CQ_EF_UDP | \ BNA_CQ_EF_L4_CKSUM_OK) #define flags_tcp4 (BNA_CQ_EF_IPV4 | BNA_CQ_EF_L3_CKSUM_OK | \ BNA_CQ_EF_TCP | BNA_CQ_EF_L4_CKSUM_OK) #define flags_tcp6 (BNA_CQ_EF_IPV6 | \ BNA_CQ_EF_TCP | BNA_CQ_EF_L4_CKSUM_OK) #define flags_udp4 (BNA_CQ_EF_IPV4 | BNA_CQ_EF_L3_CKSUM_OK | \ BNA_CQ_EF_UDP | BNA_CQ_EF_L4_CKSUM_OK) #define flags_udp6 (BNA_CQ_EF_IPV6 | \ BNA_CQ_EF_UDP | BNA_CQ_EF_L4_CKSUM_OK) static void bnad_cq_drop_packet(struct bnad *bnad, struct bna_rcb *rcb, u32 sop_ci, u32 nvecs) { struct bnad_rx_unmap_q *unmap_q; struct bnad_rx_unmap *unmap; u32 ci, vec; unmap_q = rcb->unmap_q; for (vec = 0, ci = sop_ci; vec < nvecs; vec++) { unmap = &unmap_q->unmap[ci]; BNA_QE_INDX_INC(ci, rcb->q_depth); if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) bnad_rxq_cleanup_skb(bnad, unmap); else bnad_rxq_cleanup_page(bnad, unmap); } } static void bnad_cq_setup_skb_frags(struct bna_ccb *ccb, struct sk_buff *skb, u32 nvecs) { struct bna_rcb *rcb; struct bnad *bnad; struct bnad_rx_unmap_q *unmap_q; struct bna_cq_entry *cq, *cmpl; u32 ci, pi, totlen = 0; cq = ccb->sw_q; pi = ccb->producer_index; cmpl = &cq[pi]; rcb = bna_is_small_rxq(cmpl->rxq_id) ? ccb->rcb[1] : ccb->rcb[0]; unmap_q = rcb->unmap_q; bnad = rcb->bnad; ci = rcb->consumer_index; /* prefetch header */ prefetch(page_address(unmap_q->unmap[ci].page) + unmap_q->unmap[ci].page_offset); while (nvecs--) { struct bnad_rx_unmap *unmap; u32 len; unmap = &unmap_q->unmap[ci]; BNA_QE_INDX_INC(ci, rcb->q_depth); dma_unmap_page(&bnad->pcidev->dev, dma_unmap_addr(&unmap->vector, dma_addr), unmap->vector.len, DMA_FROM_DEVICE); len = ntohs(cmpl->length); skb->truesize += unmap->vector.len; totlen += len; skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, unmap->page, unmap->page_offset, len); unmap->page = NULL; unmap->vector.len = 0; BNA_QE_INDX_INC(pi, ccb->q_depth); cmpl = &cq[pi]; } skb->len += totlen; skb->data_len += totlen; } static inline void bnad_cq_setup_skb(struct bnad *bnad, struct sk_buff *skb, struct bnad_rx_unmap *unmap, u32 len) { prefetch(skb->data); dma_unmap_single(&bnad->pcidev->dev, dma_unmap_addr(&unmap->vector, dma_addr), unmap->vector.len, DMA_FROM_DEVICE); skb_put(skb, len); skb->protocol = eth_type_trans(skb, bnad->netdev); unmap->skb = NULL; unmap->vector.len = 0; } static u32 bnad_cq_process(struct bnad *bnad, struct bna_ccb *ccb, int budget) { struct bna_cq_entry *cq, *cmpl, *next_cmpl; struct bna_rcb *rcb = NULL; struct bnad_rx_unmap_q *unmap_q; struct bnad_rx_unmap *unmap = NULL; struct sk_buff *skb = NULL; struct bna_pkt_rate *pkt_rt = &ccb->pkt_rate; struct bnad_rx_ctrl *rx_ctrl = ccb->ctrl; u32 packets = 0, len = 0, totlen = 0; u32 pi, vec, sop_ci = 0, nvecs = 0; u32 flags, masked_flags; prefetch(bnad->netdev); cq = ccb->sw_q; while (packets < budget) { cmpl = &cq[ccb->producer_index]; if (!cmpl->valid) break; /* The 'valid' field is set by the adapter, only after writing * the other fields of completion entry. Hence, do not load * other fields of completion entry *before* the 'valid' is * loaded. Adding the rmb() here prevents the compiler and/or * CPU from reordering the reads which would potentially result * in reading stale values in completion entry. */ rmb(); BNA_UPDATE_PKT_CNT(pkt_rt, ntohs(cmpl->length)); if (bna_is_small_rxq(cmpl->rxq_id)) rcb = ccb->rcb[1]; else rcb = ccb->rcb[0]; unmap_q = rcb->unmap_q; /* start of packet ci */ sop_ci = rcb->consumer_index; if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) { unmap = &unmap_q->unmap[sop_ci]; skb = unmap->skb; } else { skb = napi_get_frags(&rx_ctrl->napi); if (unlikely(!skb)) break; } prefetch(skb); flags = ntohl(cmpl->flags); len = ntohs(cmpl->length); totlen = len; nvecs = 1; /* Check all the completions for this frame. * busy-wait doesn't help much, break here. */ if (BNAD_RXBUF_IS_MULTI_BUFF(unmap_q->type) && (flags & BNA_CQ_EF_EOP) == 0) { pi = ccb->producer_index; do { BNA_QE_INDX_INC(pi, ccb->q_depth); next_cmpl = &cq[pi]; if (!next_cmpl->valid) break; /* The 'valid' field is set by the adapter, only * after writing the other fields of completion * entry. Hence, do not load other fields of * completion entry *before* the 'valid' is * loaded. Adding the rmb() here prevents the * compiler and/or CPU from reordering the reads * which would potentially result in reading * stale values in completion entry. */ rmb(); len = ntohs(next_cmpl->length); flags = ntohl(next_cmpl->flags); nvecs++; totlen += len; } while ((flags & BNA_CQ_EF_EOP) == 0); if (!next_cmpl->valid) break; } packets++; /* TODO: BNA_CQ_EF_LOCAL ? */ if (unlikely(flags & (BNA_CQ_EF_MAC_ERROR | BNA_CQ_EF_FCS_ERROR | BNA_CQ_EF_TOO_LONG))) { bnad_cq_drop_packet(bnad, rcb, sop_ci, nvecs); rcb->rxq->rx_packets_with_error++; goto next; } if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) bnad_cq_setup_skb(bnad, skb, unmap, len); else bnad_cq_setup_skb_frags(ccb, skb, nvecs); rcb->rxq->rx_packets++; rcb->rxq->rx_bytes += totlen; ccb->bytes_per_intr += totlen; masked_flags = flags & flags_cksum_prot_mask; if (likely ((bnad->netdev->features & NETIF_F_RXCSUM) && ((masked_flags == flags_tcp4) || (masked_flags == flags_udp4) || (masked_flags == flags_tcp6) || (masked_flags == flags_udp6)))) skb->ip_summed = CHECKSUM_UNNECESSARY; else skb_checksum_none_assert(skb); if ((flags & BNA_CQ_EF_VLAN) && (bnad->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)) __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(cmpl->vlan_tag)); if (BNAD_RXBUF_IS_SK_BUFF(unmap_q->type)) netif_receive_skb(skb); else napi_gro_frags(&rx_ctrl->napi); next: BNA_QE_INDX_ADD(rcb->consumer_index, nvecs, rcb->q_depth); for (vec = 0; vec < nvecs; vec++) { cmpl = &cq[ccb->producer_index]; cmpl->valid = 0; BNA_QE_INDX_INC(ccb->producer_index, ccb->q_depth); } } napi_gro_flush(&rx_ctrl->napi, false); if (likely(test_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags))) bna_ib_ack_disable_irq(ccb->i_dbell, packets); bnad_rxq_post(bnad, ccb->rcb[0]); if (ccb->rcb[1]) bnad_rxq_post(bnad, ccb->rcb[1]); return packets; } static void bnad_netif_rx_schedule_poll(struct bnad *bnad, struct bna_ccb *ccb) { struct bnad_rx_ctrl *rx_ctrl = (struct bnad_rx_ctrl *)(ccb->ctrl); struct napi_struct *napi = &rx_ctrl->napi; if (likely(napi_schedule_prep(napi))) { __napi_schedule(napi); rx_ctrl->rx_schedule++; } } /* MSIX Rx Path Handler */ static irqreturn_t bnad_msix_rx(int irq, void *data) { struct bna_ccb *ccb = (struct bna_ccb *)data; if (ccb) { ((struct bnad_rx_ctrl *)ccb->ctrl)->rx_intr_ctr++; bnad_netif_rx_schedule_poll(ccb->bnad, ccb); } return IRQ_HANDLED; } /* Interrupt handlers */ /* Mbox Interrupt Handlers */ static irqreturn_t bnad_msix_mbox_handler(int irq, void *data) { u32 intr_status; unsigned long flags; struct bnad *bnad = (struct bnad *)data; spin_lock_irqsave(&bnad->bna_lock, flags); if (unlikely(test_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))) { spin_unlock_irqrestore(&bnad->bna_lock, flags); return IRQ_HANDLED; } bna_intr_status_get(&bnad->bna, intr_status); if (BNA_IS_MBOX_ERR_INTR(&bnad->bna, intr_status)) bna_mbox_handler(&bnad->bna, intr_status); spin_unlock_irqrestore(&bnad->bna_lock, flags); return IRQ_HANDLED; } static irqreturn_t bnad_isr(int irq, void *data) { int i, j; u32 intr_status; unsigned long flags; struct bnad *bnad = (struct bnad *)data; struct bnad_rx_info *rx_info; struct bnad_rx_ctrl *rx_ctrl; struct bna_tcb *tcb = NULL; spin_lock_irqsave(&bnad->bna_lock, flags); if (unlikely(test_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags))) { spin_unlock_irqrestore(&bnad->bna_lock, flags); return IRQ_NONE; } bna_intr_status_get(&bnad->bna, intr_status); if (unlikely(!intr_status)) { spin_unlock_irqrestore(&bnad->bna_lock, flags); return IRQ_NONE; } if (BNA_IS_MBOX_ERR_INTR(&bnad->bna, intr_status)) bna_mbox_handler(&bnad->bna, intr_status); spin_unlock_irqrestore(&bnad->bna_lock, flags); if (!BNA_IS_INTX_DATA_INTR(intr_status)) return IRQ_HANDLED; /* Process data interrupts */ /* Tx processing */ for (i = 0; i < bnad->num_tx; i++) { for (j = 0; j < bnad->num_txq_per_tx; j++) { tcb = bnad->tx_info[i].tcb[j]; if (tcb && test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) bnad_tx_complete(bnad, bnad->tx_info[i].tcb[j]); } } /* Rx processing */ for (i = 0; i < bnad->num_rx; i++) { rx_info = &bnad->rx_info[i]; if (!rx_info->rx) continue; for (j = 0; j < bnad->num_rxp_per_rx; j++) { rx_ctrl = &rx_info->rx_ctrl[j]; if (rx_ctrl->ccb) bnad_netif_rx_schedule_poll(bnad, rx_ctrl->ccb); } } return IRQ_HANDLED; } /* * Called in interrupt / callback context * with bna_lock held, so cfg_flags access is OK */ static void bnad_enable_mbox_irq(struct bnad *bnad) { clear_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags); BNAD_UPDATE_CTR(bnad, mbox_intr_enabled); } /* * Called with bnad->bna_lock held b'cos of * bnad->cfg_flags access. */ static void bnad_disable_mbox_irq(struct bnad *bnad) { set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags); BNAD_UPDATE_CTR(bnad, mbox_intr_disabled); } static void bnad_set_netdev_perm_addr(struct bnad *bnad) { struct net_device *netdev = bnad->netdev; ether_addr_copy(netdev->perm_addr, bnad->perm_addr); if (is_zero_ether_addr(netdev->dev_addr)) eth_hw_addr_set(netdev, bnad->perm_addr); } /* Control Path Handlers */ /* Callbacks */ void bnad_cb_mbox_intr_enable(struct bnad *bnad) { bnad_enable_mbox_irq(bnad); } void bnad_cb_mbox_intr_disable(struct bnad *bnad) { bnad_disable_mbox_irq(bnad); } void bnad_cb_ioceth_ready(struct bnad *bnad) { bnad->bnad_completions.ioc_comp_status = BNA_CB_SUCCESS; complete(&bnad->bnad_completions.ioc_comp); } void bnad_cb_ioceth_failed(struct bnad *bnad) { bnad->bnad_completions.ioc_comp_status = BNA_CB_FAIL; complete(&bnad->bnad_completions.ioc_comp); } void bnad_cb_ioceth_disabled(struct bnad *bnad) { bnad->bnad_completions.ioc_comp_status = BNA_CB_SUCCESS; complete(&bnad->bnad_completions.ioc_comp); } static void bnad_cb_enet_disabled(void *arg) { struct bnad *bnad = (struct bnad *)arg; netif_carrier_off(bnad->netdev); complete(&bnad->bnad_completions.enet_comp); } void bnad_cb_ethport_link_status(struct bnad *bnad, enum bna_link_status link_status) { bool link_up = false; link_up = (link_status == BNA_LINK_UP) || (link_status == BNA_CEE_UP); if (link_status == BNA_CEE_UP) { if (!test_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags)) BNAD_UPDATE_CTR(bnad, cee_toggle); set_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags); } else { if (test_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags)) BNAD_UPDATE_CTR(bnad, cee_toggle); clear_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags); } if (link_up) { if (!netif_carrier_ok(bnad->netdev)) { uint tx_id, tcb_id; netdev_info(bnad->netdev, "link up\n"); netif_carrier_on(bnad->netdev); BNAD_UPDATE_CTR(bnad, link_toggle); for (tx_id = 0; tx_id < bnad->num_tx; tx_id++) { for (tcb_id = 0; tcb_id < bnad->num_txq_per_tx; tcb_id++) { struct bna_tcb *tcb = bnad->tx_info[tx_id].tcb[tcb_id]; u32 txq_id; if (!tcb) continue; txq_id = tcb->id; if (test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)) { /* * Force an immediate * Transmit Schedule */ netif_wake_subqueue( bnad->netdev, txq_id); BNAD_UPDATE_CTR(bnad, netif_queue_wakeup); } else { netif_stop_subqueue( bnad->netdev, txq_id); BNAD_UPDATE_CTR(bnad, netif_queue_stop); } } } } } else { if (netif_carrier_ok(bnad->netdev)) { netdev_info(bnad->netdev, "link down\n"); netif_carrier_off(bnad->netdev); BNAD_UPDATE_CTR(bnad, link_toggle); } } } static void bnad_cb_tx_disabled(void *arg, struct bna_tx *tx) { struct bnad *bnad = (struct bnad *)arg; complete(&bnad->bnad_completions.tx_comp); } static void bnad_cb_tcb_setup(struct bnad *bnad, struct bna_tcb *tcb) { struct bnad_tx_info *tx_info = (struct bnad_tx_info *)tcb->txq->tx->priv; tcb->priv = tcb; tx_info->tcb[tcb->id] = tcb; } static void bnad_cb_tcb_destroy(struct bnad *bnad, struct bna_tcb *tcb) { struct bnad_tx_info *tx_info = (struct bnad_tx_info *)tcb->txq->tx->priv; tx_info->tcb[tcb->id] = NULL; tcb->priv = NULL; } static void bnad_cb_ccb_setup(struct bnad *bnad, struct bna_ccb *ccb) { struct bnad_rx_info *rx_info = (struct bnad_rx_info *)ccb->cq->rx->priv; rx_info->rx_ctrl[ccb->id].ccb = ccb; ccb->ctrl = &rx_info->rx_ctrl[ccb->id]; } static void bnad_cb_ccb_destroy(struct bnad *bnad, struct bna_ccb *ccb) { struct bnad_rx_info *rx_info = (struct bnad_rx_info *)ccb->cq->rx->priv; rx_info->rx_ctrl[ccb->id].ccb = NULL; } static void bnad_cb_tx_stall(struct bnad *bnad, struct bna_tx *tx) { struct bnad_tx_info *tx_info = (struct bnad_tx_info *)tx->priv; struct bna_tcb *tcb; u32 txq_id; int i; for (i = 0; i < BNAD_MAX_TXQ_PER_TX; i++) { tcb = tx_info->tcb[i]; if (!tcb) continue; txq_id = tcb->id; clear_bit(BNAD_TXQ_TX_STARTED, &tcb->flags); netif_stop_subqueue(bnad->netdev, txq_id); } } static void bnad_cb_tx_resume(struct bnad *bnad, struct bna_tx *tx) { struct bnad_tx_info *tx_info = (struct bnad_tx_info *)tx->priv; struct bna_tcb *tcb; u32 txq_id; int i; for (i = 0; i < BNAD_MAX_TXQ_PER_TX; i++) { tcb = tx_info->tcb[i]; if (!tcb) continue; txq_id = tcb->id; BUG_ON(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags)); set_bit(BNAD_TXQ_TX_STARTED, &tcb->flags); BUG_ON(*(tcb->hw_consumer_index) != 0); if (netif_carrier_ok(bnad->netdev)) { netif_wake_subqueue(bnad->netdev, txq_id); BNAD_UPDATE_CTR(bnad, netif_queue_wakeup); } } /* * Workaround for first ioceth enable failure & we * get a 0 MAC address. We try to get the MAC address * again here. */ if (is_zero_ether_addr(bnad->perm_addr)) { bna_enet_perm_mac_get(&bnad->bna.enet, bnad->perm_addr); bnad_set_netdev_perm_addr(bnad); } } /* * Free all TxQs buffers and then notify TX_E_CLEANUP_DONE to Tx fsm. */ static void bnad_tx_cleanup(struct delayed_work *work) { struct bnad_tx_info *tx_info = container_of(work, struct bnad_tx_info, tx_cleanup_work); struct bnad *bnad = NULL; struct bna_tcb *tcb; unsigned long flags; u32 i, pending = 0; for (i = 0; i < BNAD_MAX_TXQ_PER_TX; i++) { tcb = tx_info->tcb[i]; if (!tcb) continue; bnad = tcb->bnad; if (test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) { pending++; continue; } bnad_txq_cleanup(bnad, tcb); smp_mb__before_atomic(); clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); } if (pending) { queue_delayed_work(bnad->work_q, &tx_info->tx_cleanup_work, msecs_to_jiffies(1)); return; } spin_lock_irqsave(&bnad->bna_lock, flags); bna_tx_cleanup_complete(tx_info->tx); spin_unlock_irqrestore(&bnad->bna_lock, flags); } static void bnad_cb_tx_cleanup(struct bnad *bnad, struct bna_tx *tx) { struct bnad_tx_info *tx_info = (struct bnad_tx_info *)tx->priv; struct bna_tcb *tcb; int i; for (i = 0; i < BNAD_MAX_TXQ_PER_TX; i++) { tcb = tx_info->tcb[i]; if (!tcb) continue; } queue_delayed_work(bnad->work_q, &tx_info->tx_cleanup_work, 0); } static void bnad_cb_rx_stall(struct bnad *bnad, struct bna_rx *rx) { struct bnad_rx_info *rx_info = (struct bnad_rx_info *)rx->priv; struct bna_ccb *ccb; struct bnad_rx_ctrl *rx_ctrl; int i; for (i = 0; i < BNAD_MAX_RXP_PER_RX; i++) { rx_ctrl = &rx_info->rx_ctrl[i]; ccb = rx_ctrl->ccb; if (!ccb) continue; clear_bit(BNAD_RXQ_POST_OK, &ccb->rcb[0]->flags); if (ccb->rcb[1]) clear_bit(BNAD_RXQ_POST_OK, &ccb->rcb[1]->flags); } } /* * Free all RxQs buffers and then notify RX_E_CLEANUP_DONE to Rx fsm. */ static void bnad_rx_cleanup(void *work) { struct bnad_rx_info *rx_info = container_of(work, struct bnad_rx_info, rx_cleanup_work); struct bnad_rx_ctrl *rx_ctrl; struct bnad *bnad = NULL; unsigned long flags; u32 i; for (i = 0; i < BNAD_MAX_RXP_PER_RX; i++) { rx_ctrl = &rx_info->rx_ctrl[i]; if (!rx_ctrl->ccb) continue; bnad = rx_ctrl->ccb->bnad; /* * Wait till the poll handler has exited * and nothing can be scheduled anymore */ napi_disable(&rx_ctrl->napi); bnad_cq_cleanup(bnad, rx_ctrl->ccb); bnad_rxq_cleanup(bnad, rx_ctrl->ccb->rcb[0]); if (rx_ctrl->ccb->rcb[1]) bnad_rxq_cleanup(bnad, rx_ctrl->ccb->rcb[1]); } spin_lock_irqsave(&bnad->bna_lock, flags); bna_rx_cleanup_complete(rx_info->rx); spin_unlock_irqrestore(&bnad->bna_lock, flags); } static void bnad_cb_rx_cleanup(struct bnad *bnad, struct bna_rx *rx) { struct bnad_rx_info *rx_info = (struct bnad_rx_info *)rx->priv; struct bna_ccb *ccb; struct bnad_rx_ctrl *rx_ctrl; int i; for (i = 0; i < BNAD_MAX_RXP_PER_RX; i++) { rx_ctrl = &rx_info->rx_ctrl[i]; ccb = rx_ctrl->ccb; if (!ccb) continue; clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[0]->flags); if (ccb->rcb[1]) clear_bit(BNAD_RXQ_STARTED, &ccb->rcb[1]->flags); } queue_work(bnad->work_q, &rx_info->rx_cleanup_work); } static void bnad_cb_rx_post(struct bnad *bnad, struct bna_rx *rx) { struct bnad_rx_info *rx_info = (struct bnad_rx_info *)rx->priv; struct bna_ccb *ccb; struct bna_rcb *rcb; struct bnad_rx_ctrl *rx_ctrl; int i, j; for (i = 0; i < BNAD_MAX_RXP_PER_RX; i++) { rx_ctrl = &rx_info->rx_ctrl[i]; ccb = rx_ctrl->ccb; if (!ccb) continue; napi_enable(&rx_ctrl->napi); for (j = 0; j < BNAD_MAX_RXQ_PER_RXP; j++) { rcb = ccb->rcb[j]; if (!rcb) continue; bnad_rxq_alloc_init(bnad, rcb); set_bit(BNAD_RXQ_STARTED, &rcb->flags); set_bit(BNAD_RXQ_POST_OK, &rcb->flags); bnad_rxq_post(bnad, rcb); } } } static void bnad_cb_rx_disabled(void *arg, struct bna_rx *rx) { struct bnad *bnad = (struct bnad *)arg; complete(&bnad->bnad_completions.rx_comp); } static void bnad_cb_rx_mcast_add(struct bnad *bnad, struct bna_rx *rx) { bnad->bnad_completions.mcast_comp_status = BNA_CB_SUCCESS; complete(&bnad->bnad_completions.mcast_comp); } void bnad_cb_stats_get(struct bnad *bnad, enum bna_cb_status status, struct bna_stats *stats) { if (status == BNA_CB_SUCCESS) BNAD_UPDATE_CTR(bnad, hw_stats_updates); if (!netif_running(bnad->netdev) || !test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) return; mod_timer(&bnad->stats_timer, jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ)); } static void bnad_cb_enet_mtu_set(struct bnad *bnad) { bnad->bnad_completions.mtu_comp_status = BNA_CB_SUCCESS; complete(&bnad->bnad_completions.mtu_comp); } void bnad_cb_completion(void *arg, enum bfa_status status) { struct bnad_iocmd_comp *iocmd_comp = (struct bnad_iocmd_comp *)arg; iocmd_comp->comp_status = (u32) status; complete(&iocmd_comp->comp); } /* Resource allocation, free functions */ static void bnad_mem_free(struct bnad *bnad, struct bna_mem_info *mem_info) { int i; dma_addr_t dma_pa; if (mem_info->mdl == NULL) return; for (i = 0; i < mem_info->num; i++) { if (mem_info->mdl[i].kva != NULL) { if (mem_info->mem_type == BNA_MEM_T_DMA) { BNA_GET_DMA_ADDR(&(mem_info->mdl[i].dma), dma_pa); dma_free_coherent(&bnad->pcidev->dev, mem_info->mdl[i].len, mem_info->mdl[i].kva, dma_pa); } else kfree(mem_info->mdl[i].kva); } } kfree(mem_info->mdl); mem_info->mdl = NULL; } static int bnad_mem_alloc(struct bnad *bnad, struct bna_mem_info *mem_info) { int i; dma_addr_t dma_pa; if ((mem_info->num == 0) || (mem_info->len == 0)) { mem_info->mdl = NULL; return 0; } mem_info->mdl = kcalloc(mem_info->num, sizeof(struct bna_mem_descr), GFP_KERNEL); if (mem_info->mdl == NULL) return -ENOMEM; if (mem_info->mem_type == BNA_MEM_T_DMA) { for (i = 0; i < mem_info->num; i++) { mem_info->mdl[i].len = mem_info->len; mem_info->mdl[i].kva = dma_alloc_coherent(&bnad->pcidev->dev, mem_info->len, &dma_pa, GFP_KERNEL); if (mem_info->mdl[i].kva == NULL) goto err_return; BNA_SET_DMA_ADDR(dma_pa, &(mem_info->mdl[i].dma)); } } else { for (i = 0; i < mem_info->num; i++) { mem_info->mdl[i].len = mem_info->len; mem_info->mdl[i].kva = kzalloc(mem_info->len, GFP_KERNEL); if (mem_info->mdl[i].kva == NULL) goto err_return; } } return 0; err_return: bnad_mem_free(bnad, mem_info); return -ENOMEM; } /* Free IRQ for Mailbox */ static void bnad_mbox_irq_free(struct bnad *bnad) { int irq; unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); bnad_disable_mbox_irq(bnad); spin_unlock_irqrestore(&bnad->bna_lock, flags); irq = BNAD_GET_MBOX_IRQ(bnad); free_irq(irq, bnad); } /* * Allocates IRQ for Mailbox, but keep it disabled * This will be enabled once we get the mbox enable callback * from bna */ static int bnad_mbox_irq_alloc(struct bnad *bnad) { int err = 0; unsigned long irq_flags, flags; u32 irq; irq_handler_t irq_handler; spin_lock_irqsave(&bnad->bna_lock, flags); if (bnad->cfg_flags & BNAD_CF_MSIX) { irq_handler = (irq_handler_t)bnad_msix_mbox_handler; irq = bnad->msix_table[BNAD_MAILBOX_MSIX_INDEX].vector; irq_flags = 0; } else { irq_handler = (irq_handler_t)bnad_isr; irq = bnad->pcidev->irq; irq_flags = IRQF_SHARED; } spin_unlock_irqrestore(&bnad->bna_lock, flags); sprintf(bnad->mbox_irq_name, "%s", BNAD_NAME); /* * Set the Mbox IRQ disable flag, so that the IRQ handler * called from request_irq() for SHARED IRQs do not execute */ set_bit(BNAD_RF_MBOX_IRQ_DISABLED, &bnad->run_flags); BNAD_UPDATE_CTR(bnad, mbox_intr_disabled); err = request_irq(irq, irq_handler, irq_flags, bnad->mbox_irq_name, bnad); return err; } static void bnad_txrx_irq_free(struct bnad *bnad, struct bna_intr_info *intr_info) { kfree(intr_info->idl); intr_info->idl = NULL; } /* Allocates Interrupt Descriptor List for MSIX/INT-X vectors */ static int bnad_txrx_irq_alloc(struct bnad *bnad, enum bnad_intr_source src, u32 txrx_id, struct bna_intr_info *intr_info) { int i, vector_start = 0; u32 cfg_flags; unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); cfg_flags = bnad->cfg_flags; spin_unlock_irqrestore(&bnad->bna_lock, flags); if (cfg_flags & BNAD_CF_MSIX) { intr_info->intr_type = BNA_INTR_T_MSIX; intr_info->idl = kcalloc(intr_info->num, sizeof(struct bna_intr_descr), GFP_KERNEL); if (!intr_info->idl) return -ENOMEM; switch (src) { case BNAD_INTR_TX: vector_start = BNAD_MAILBOX_MSIX_VECTORS + txrx_id; break; case BNAD_INTR_RX: vector_start = BNAD_MAILBOX_MSIX_VECTORS + (bnad->num_tx * bnad->num_txq_per_tx) + txrx_id; break; default: BUG(); } for (i = 0; i < intr_info->num; i++) intr_info->idl[i].vector = vector_start + i; } else { intr_info->intr_type = BNA_INTR_T_INTX; intr_info->num = 1; intr_info->idl = kcalloc(intr_info->num, sizeof(struct bna_intr_descr), GFP_KERNEL); if (!intr_info->idl) return -ENOMEM; switch (src) { case BNAD_INTR_TX: intr_info->idl[0].vector = BNAD_INTX_TX_IB_BITMASK; break; case BNAD_INTR_RX: intr_info->idl[0].vector = BNAD_INTX_RX_IB_BITMASK; break; } } return 0; } /* NOTE: Should be called for MSIX only * Unregisters Tx MSIX vector(s) from the kernel */ static void bnad_tx_msix_unregister(struct bnad *bnad, struct bnad_tx_info *tx_info, int num_txqs) { int i; int vector_num; for (i = 0; i < num_txqs; i++) { if (tx_info->tcb[i] == NULL) continue; vector_num = tx_info->tcb[i]->intr_vector; free_irq(bnad->msix_table[vector_num].vector, tx_info->tcb[i]); } } /* NOTE: Should be called for MSIX only * Registers Tx MSIX vector(s) and ISR(s), cookie with the kernel */ static int bnad_tx_msix_register(struct bnad *bnad, struct bnad_tx_info *tx_info, u32 tx_id, int num_txqs) { int i; int err; int vector_num; for (i = 0; i < num_txqs; i++) { vector_num = tx_info->tcb[i]->intr_vector; sprintf(tx_info->tcb[i]->name, "%s TXQ %d", bnad->netdev->name, tx_id + tx_info->tcb[i]->id); err = request_irq(bnad->msix_table[vector_num].vector, (irq_handler_t)bnad_msix_tx, 0, tx_info->tcb[i]->name, tx_info->tcb[i]); if (err) goto err_return; } return 0; err_return: if (i > 0) bnad_tx_msix_unregister(bnad, tx_info, (i - 1)); return -1; } /* NOTE: Should be called for MSIX only * Unregisters Rx MSIX vector(s) from the kernel */ static void bnad_rx_msix_unregister(struct bnad *bnad, struct bnad_rx_info *rx_info, int num_rxps) { int i; int vector_num; for (i = 0; i < num_rxps; i++) { if (rx_info->rx_ctrl[i].ccb == NULL) continue; vector_num = rx_info->rx_ctrl[i].ccb->intr_vector; free_irq(bnad->msix_table[vector_num].vector, rx_info->rx_ctrl[i].ccb); } } /* NOTE: Should be called for MSIX only * Registers Tx MSIX vector(s) and ISR(s), cookie with the kernel */ static int bnad_rx_msix_register(struct bnad *bnad, struct bnad_rx_info *rx_info, u32 rx_id, int num_rxps) { int i; int err; int vector_num; for (i = 0; i < num_rxps; i++) { vector_num = rx_info->rx_ctrl[i].ccb->intr_vector; sprintf(rx_info->rx_ctrl[i].ccb->name, "%s CQ %d", bnad->netdev->name, rx_id + rx_info->rx_ctrl[i].ccb->id); err = request_irq(bnad->msix_table[vector_num].vector, (irq_handler_t)bnad_msix_rx, 0, rx_info->rx_ctrl[i].ccb->name, rx_info->rx_ctrl[i].ccb); if (err) goto err_return; } return 0; err_return: if (i > 0) bnad_rx_msix_unregister(bnad, rx_info, (i - 1)); return -1; } /* Free Tx object Resources */ static void bnad_tx_res_free(struct bnad *bnad, struct bna_res_info *res_info) { int i; for (i = 0; i < BNA_TX_RES_T_MAX; i++) { if (res_info[i].res_type == BNA_RES_T_MEM) bnad_mem_free(bnad, &res_info[i].res_u.mem_info); else if (res_info[i].res_type == BNA_RES_T_INTR) bnad_txrx_irq_free(bnad, &res_info[i].res_u.intr_info); } } /* Allocates memory and interrupt resources for Tx object */ static int bnad_tx_res_alloc(struct bnad *bnad, struct bna_res_info *res_info, u32 tx_id) { int i, err = 0; for (i = 0; i < BNA_TX_RES_T_MAX; i++) { if (res_info[i].res_type == BNA_RES_T_MEM) err = bnad_mem_alloc(bnad, &res_info[i].res_u.mem_info); else if (res_info[i].res_type == BNA_RES_T_INTR) err = bnad_txrx_irq_alloc(bnad, BNAD_INTR_TX, tx_id, &res_info[i].res_u.intr_info); if (err) goto err_return; } return 0; err_return: bnad_tx_res_free(bnad, res_info); return err; } /* Free Rx object Resources */ static void bnad_rx_res_free(struct bnad *bnad, struct bna_res_info *res_info) { int i; for (i = 0; i < BNA_RX_RES_T_MAX; i++) { if (res_info[i].res_type == BNA_RES_T_MEM) bnad_mem_free(bnad, &res_info[i].res_u.mem_info); else if (res_info[i].res_type == BNA_RES_T_INTR) bnad_txrx_irq_free(bnad, &res_info[i].res_u.intr_info); } } /* Allocates memory and interrupt resources for Rx object */ static int bnad_rx_res_alloc(struct bnad *bnad, struct bna_res_info *res_info, uint rx_id) { int i, err = 0; /* All memory needs to be allocated before setup_ccbs */ for (i = 0; i < BNA_RX_RES_T_MAX; i++) { if (res_info[i].res_type == BNA_RES_T_MEM) err = bnad_mem_alloc(bnad, &res_info[i].res_u.mem_info); else if (res_info[i].res_type == BNA_RES_T_INTR) err = bnad_txrx_irq_alloc(bnad, BNAD_INTR_RX, rx_id, &res_info[i].res_u.intr_info); if (err) goto err_return; } return 0; err_return: bnad_rx_res_free(bnad, res_info); return err; } /* Timer callbacks */ /* a) IOC timer */ static void bnad_ioc_timeout(struct timer_list *t) { struct bnad *bnad = from_timer(bnad, t, bna.ioceth.ioc.ioc_timer); unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); bfa_nw_ioc_timeout(&bnad->bna.ioceth.ioc); spin_unlock_irqrestore(&bnad->bna_lock, flags); } static void bnad_ioc_hb_check(struct timer_list *t) { struct bnad *bnad = from_timer(bnad, t, bna.ioceth.ioc.hb_timer); unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); bfa_nw_ioc_hb_check(&bnad->bna.ioceth.ioc); spin_unlock_irqrestore(&bnad->bna_lock, flags); } static void bnad_iocpf_timeout(struct timer_list *t) { struct bnad *bnad = from_timer(bnad, t, bna.ioceth.ioc.iocpf_timer); unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); bfa_nw_iocpf_timeout(&bnad->bna.ioceth.ioc); spin_unlock_irqrestore(&bnad->bna_lock, flags); } static void bnad_iocpf_sem_timeout(struct timer_list *t) { struct bnad *bnad = from_timer(bnad, t, bna.ioceth.ioc.sem_timer); unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); bfa_nw_iocpf_sem_timeout(&bnad->bna.ioceth.ioc); spin_unlock_irqrestore(&bnad->bna_lock, flags); } /* * All timer routines use bnad->bna_lock to protect against * the following race, which may occur in case of no locking: * Time CPU m CPU n * 0 1 = test_bit * 1 clear_bit * 2 del_timer_sync * 3 mod_timer */ /* b) Dynamic Interrupt Moderation Timer */ static void bnad_dim_timeout(struct timer_list *t) { struct bnad *bnad = from_timer(bnad, t, dim_timer); struct bnad_rx_info *rx_info; struct bnad_rx_ctrl *rx_ctrl; int i, j; unsigned long flags; if (!netif_carrier_ok(bnad->netdev)) return; spin_lock_irqsave(&bnad->bna_lock, flags); for (i = 0; i < bnad->num_rx; i++) { rx_info = &bnad->rx_info[i]; if (!rx_info->rx) continue; for (j = 0; j < bnad->num_rxp_per_rx; j++) { rx_ctrl = &rx_info->rx_ctrl[j]; if (!rx_ctrl->ccb) continue; bna_rx_dim_update(rx_ctrl->ccb); } } /* Check for BNAD_CF_DIM_ENABLED, does not eliminate a race */ if (test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags)) mod_timer(&bnad->dim_timer, jiffies + msecs_to_jiffies(BNAD_DIM_TIMER_FREQ)); spin_unlock_irqrestore(&bnad->bna_lock, flags); } /* c) Statistics Timer */ static void bnad_stats_timeout(struct timer_list *t) { struct bnad *bnad = from_timer(bnad, t, stats_timer); unsigned long flags; if (!netif_running(bnad->netdev) || !test_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) return; spin_lock_irqsave(&bnad->bna_lock, flags); bna_hw_stats_get(&bnad->bna); spin_unlock_irqrestore(&bnad->bna_lock, flags); } /* * Set up timer for DIM * Called with bnad->bna_lock held */ void bnad_dim_timer_start(struct bnad *bnad) { if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED && !test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags)) { timer_setup(&bnad->dim_timer, bnad_dim_timeout, 0); set_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags); mod_timer(&bnad->dim_timer, jiffies + msecs_to_jiffies(BNAD_DIM_TIMER_FREQ)); } } /* * Set up timer for statistics * Called with mutex_lock(&bnad->conf_mutex) held */ static void bnad_stats_timer_start(struct bnad *bnad) { unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); if (!test_and_set_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) { timer_setup(&bnad->stats_timer, bnad_stats_timeout, 0); mod_timer(&bnad->stats_timer, jiffies + msecs_to_jiffies(BNAD_STATS_TIMER_FREQ)); } spin_unlock_irqrestore(&bnad->bna_lock, flags); } /* * Stops the stats timer * Called with mutex_lock(&bnad->conf_mutex) held */ static void bnad_stats_timer_stop(struct bnad *bnad) { int to_del = 0; unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); if (test_and_clear_bit(BNAD_RF_STATS_TIMER_RUNNING, &bnad->run_flags)) to_del = 1; spin_unlock_irqrestore(&bnad->bna_lock, flags); if (to_del) del_timer_sync(&bnad->stats_timer); } /* Utilities */ static void bnad_netdev_mc_list_get(struct net_device *netdev, u8 *mc_list) { int i = 1; /* Index 0 has broadcast address */ struct netdev_hw_addr *mc_addr; netdev_for_each_mc_addr(mc_addr, netdev) { ether_addr_copy(&mc_list[i * ETH_ALEN], &mc_addr->addr[0]); i++; } } static int bnad_napi_poll_rx(struct napi_struct *napi, int budget) { struct bnad_rx_ctrl *rx_ctrl = container_of(napi, struct bnad_rx_ctrl, napi); struct bnad *bnad = rx_ctrl->bnad; int rcvd = 0; rx_ctrl->rx_poll_ctr++; if (!netif_carrier_ok(bnad->netdev)) goto poll_exit; rcvd = bnad_cq_process(bnad, rx_ctrl->ccb, budget); if (rcvd >= budget) return rcvd; poll_exit: napi_complete_done(napi, rcvd); rx_ctrl->rx_complete++; if (rx_ctrl->ccb) bnad_enable_rx_irq_unsafe(rx_ctrl->ccb); return rcvd; } static void bnad_napi_add(struct bnad *bnad, u32 rx_id) { struct bnad_rx_ctrl *rx_ctrl; int i; /* Initialize & enable NAPI */ for (i = 0; i < bnad->num_rxp_per_rx; i++) { rx_ctrl = &bnad->rx_info[rx_id].rx_ctrl[i]; netif_napi_add(bnad->netdev, &rx_ctrl->napi, bnad_napi_poll_rx); } } static void bnad_napi_delete(struct bnad *bnad, u32 rx_id) { int i; /* First disable and then clean up */ for (i = 0; i < bnad->num_rxp_per_rx; i++) netif_napi_del(&bnad->rx_info[rx_id].rx_ctrl[i].napi); } /* Should be held with conf_lock held */ void bnad_destroy_tx(struct bnad *bnad, u32 tx_id) { struct bnad_tx_info *tx_info = &bnad->tx_info[tx_id]; struct bna_res_info *res_info = &bnad->tx_res_info[tx_id].res_info[0]; unsigned long flags; if (!tx_info->tx) return; init_completion(&bnad->bnad_completions.tx_comp); spin_lock_irqsave(&bnad->bna_lock, flags); bna_tx_disable(tx_info->tx, BNA_HARD_CLEANUP, bnad_cb_tx_disabled); spin_unlock_irqrestore(&bnad->bna_lock, flags); wait_for_completion(&bnad->bnad_completions.tx_comp); if (tx_info->tcb[0]->intr_type == BNA_INTR_T_MSIX) bnad_tx_msix_unregister(bnad, tx_info, bnad->num_txq_per_tx); spin_lock_irqsave(&bnad->bna_lock, flags); bna_tx_destroy(tx_info->tx); spin_unlock_irqrestore(&bnad->bna_lock, flags); tx_info->tx = NULL; tx_info->tx_id = 0; bnad_tx_res_free(bnad, res_info); } /* Should be held with conf_lock held */ int bnad_setup_tx(struct bnad *bnad, u32 tx_id) { int err; struct bnad_tx_info *tx_info = &bnad->tx_info[tx_id]; struct bna_res_info *res_info = &bnad->tx_res_info[tx_id].res_info[0]; struct bna_intr_info *intr_info = &res_info[BNA_TX_RES_INTR_T_TXCMPL].res_u.intr_info; struct bna_tx_config *tx_config = &bnad->tx_config[tx_id]; static const struct bna_tx_event_cbfn tx_cbfn = { .tcb_setup_cbfn = bnad_cb_tcb_setup, .tcb_destroy_cbfn = bnad_cb_tcb_destroy, .tx_stall_cbfn = bnad_cb_tx_stall, .tx_resume_cbfn = bnad_cb_tx_resume, .tx_cleanup_cbfn = bnad_cb_tx_cleanup, }; struct bna_tx *tx; unsigned long flags; tx_info->tx_id = tx_id; /* Initialize the Tx object configuration */ tx_config->num_txq = bnad->num_txq_per_tx; tx_config->txq_depth = bnad->txq_depth; tx_config->tx_type = BNA_TX_T_REGULAR; tx_config->coalescing_timeo = bnad->tx_coalescing_timeo; /* Get BNA's resource requirement for one tx object */ spin_lock_irqsave(&bnad->bna_lock, flags); bna_tx_res_req(bnad->num_txq_per_tx, bnad->txq_depth, res_info); spin_unlock_irqrestore(&bnad->bna_lock, flags); /* Fill Unmap Q memory requirements */ BNAD_FILL_UNMAPQ_MEM_REQ(&res_info[BNA_TX_RES_MEM_T_UNMAPQ], bnad->num_txq_per_tx, (sizeof(struct bnad_tx_unmap) * bnad->txq_depth)); /* Allocate resources */ err = bnad_tx_res_alloc(bnad, res_info, tx_id); if (err) return err; /* Ask BNA to create one Tx object, supplying required resources */ spin_lock_irqsave(&bnad->bna_lock, flags); tx = bna_tx_create(&bnad->bna, bnad, tx_config, &tx_cbfn, res_info, tx_info); spin_unlock_irqrestore(&bnad->bna_lock, flags); if (!tx) { err = -ENOMEM; goto err_return; } tx_info->tx = tx; INIT_DELAYED_WORK(&tx_info->tx_cleanup_work, (work_func_t)bnad_tx_cleanup); /* Register ISR for the Tx object */ if (intr_info->intr_type == BNA_INTR_T_MSIX) { err = bnad_tx_msix_register(bnad, tx_info, tx_id, bnad->num_txq_per_tx); if (err) goto cleanup_tx; } spin_lock_irqsave(&bnad->bna_lock, flags); bna_tx_enable(tx); spin_unlock_irqrestore(&bnad->bna_lock, flags); return 0; cleanup_tx: spin_lock_irqsave(&bnad->bna_lock, flags); bna_tx_destroy(tx_info->tx); spin_unlock_irqrestore(&bnad->bna_lock, flags); tx_info->tx = NULL; tx_info->tx_id = 0; err_return: bnad_tx_res_free(bnad, res_info); return err; } /* Setup the rx config for bna_rx_create */ /* bnad decides the configuration */ static void bnad_init_rx_config(struct bnad *bnad, struct bna_rx_config *rx_config) { memset(rx_config, 0, sizeof(*rx_config)); rx_config->rx_type = BNA_RX_T_REGULAR; rx_config->num_paths = bnad->num_rxp_per_rx; rx_config->coalescing_timeo = bnad->rx_coalescing_timeo; if (bnad->num_rxp_per_rx > 1) { rx_config->rss_status = BNA_STATUS_T_ENABLED; rx_config->rss_config.hash_type = (BFI_ENET_RSS_IPV6 | BFI_ENET_RSS_IPV6_TCP | BFI_ENET_RSS_IPV4 | BFI_ENET_RSS_IPV4_TCP); rx_config->rss_config.hash_mask = bnad->num_rxp_per_rx - 1; netdev_rss_key_fill(rx_config->rss_config.toeplitz_hash_key, sizeof(rx_config->rss_config.toeplitz_hash_key)); } else { rx_config->rss_status = BNA_STATUS_T_DISABLED; memset(&rx_config->rss_config, 0, sizeof(rx_config->rss_config)); } rx_config->frame_size = BNAD_FRAME_SIZE(bnad->netdev->mtu); rx_config->q0_multi_buf = BNA_STATUS_T_DISABLED; /* BNA_RXP_SINGLE - one data-buffer queue * BNA_RXP_SLR - one small-buffer and one large-buffer queues * BNA_RXP_HDS - one header-buffer and one data-buffer queues */ /* TODO: configurable param for queue type */ rx_config->rxp_type = BNA_RXP_SLR; if (BNAD_PCI_DEV_IS_CAT2(bnad) && rx_config->frame_size > 4096) { /* though size_routing_enable is set in SLR, * small packets may get routed to same rxq. * set buf_size to 2048 instead of PAGE_SIZE. */ rx_config->q0_buf_size = 2048; /* this should be in multiples of 2 */ rx_config->q0_num_vecs = 4; rx_config->q0_depth = bnad->rxq_depth * rx_config->q0_num_vecs; rx_config->q0_multi_buf = BNA_STATUS_T_ENABLED; } else { rx_config->q0_buf_size = rx_config->frame_size; rx_config->q0_num_vecs = 1; rx_config->q0_depth = bnad->rxq_depth; } /* initialize for q1 for BNA_RXP_SLR/BNA_RXP_HDS */ if (rx_config->rxp_type == BNA_RXP_SLR) { rx_config->q1_depth = bnad->rxq_depth; rx_config->q1_buf_size = BFI_SMALL_RXBUF_SIZE; } rx_config->vlan_strip_status = (bnad->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) ? BNA_STATUS_T_ENABLED : BNA_STATUS_T_DISABLED; } static void bnad_rx_ctrl_init(struct bnad *bnad, u32 rx_id) { struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id]; int i; for (i = 0; i < bnad->num_rxp_per_rx; i++) rx_info->rx_ctrl[i].bnad = bnad; } /* Called with mutex_lock(&bnad->conf_mutex) held */ static u32 bnad_reinit_rx(struct bnad *bnad) { struct net_device *netdev = bnad->netdev; u32 err = 0, current_err = 0; u32 rx_id = 0, count = 0; unsigned long flags; /* destroy and create new rx objects */ for (rx_id = 0; rx_id < bnad->num_rx; rx_id++) { if (!bnad->rx_info[rx_id].rx) continue; bnad_destroy_rx(bnad, rx_id); } spin_lock_irqsave(&bnad->bna_lock, flags); bna_enet_mtu_set(&bnad->bna.enet, BNAD_FRAME_SIZE(bnad->netdev->mtu), NULL); spin_unlock_irqrestore(&bnad->bna_lock, flags); for (rx_id = 0; rx_id < bnad->num_rx; rx_id++) { count++; current_err = bnad_setup_rx(bnad, rx_id); if (current_err && !err) { err = current_err; netdev_err(netdev, "RXQ:%u setup failed\n", rx_id); } } /* restore rx configuration */ if (bnad->rx_info[0].rx && !err) { bnad_restore_vlans(bnad, 0); bnad_enable_default_bcast(bnad); spin_lock_irqsave(&bnad->bna_lock, flags); bnad_mac_addr_set_locked(bnad, netdev->dev_addr); spin_unlock_irqrestore(&bnad->bna_lock, flags); bnad_set_rx_mode(netdev); } return count; } /* Called with bnad_conf_lock() held */ void bnad_destroy_rx(struct bnad *bnad, u32 rx_id) { struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id]; struct bna_rx_config *rx_config = &bnad->rx_config[rx_id]; struct bna_res_info *res_info = &bnad->rx_res_info[rx_id].res_info[0]; unsigned long flags; int to_del = 0; if (!rx_info->rx) return; if (0 == rx_id) { spin_lock_irqsave(&bnad->bna_lock, flags); if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED && test_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags)) { clear_bit(BNAD_RF_DIM_TIMER_RUNNING, &bnad->run_flags); to_del = 1; } spin_unlock_irqrestore(&bnad->bna_lock, flags); if (to_del) del_timer_sync(&bnad->dim_timer); } init_completion(&bnad->bnad_completions.rx_comp); spin_lock_irqsave(&bnad->bna_lock, flags); bna_rx_disable(rx_info->rx, BNA_HARD_CLEANUP, bnad_cb_rx_disabled); spin_unlock_irqrestore(&bnad->bna_lock, flags); wait_for_completion(&bnad->bnad_completions.rx_comp); if (rx_info->rx_ctrl[0].ccb->intr_type == BNA_INTR_T_MSIX) bnad_rx_msix_unregister(bnad, rx_info, rx_config->num_paths); bnad_napi_delete(bnad, rx_id); spin_lock_irqsave(&bnad->bna_lock, flags); bna_rx_destroy(rx_info->rx); rx_info->rx = NULL; rx_info->rx_id = 0; spin_unlock_irqrestore(&bnad->bna_lock, flags); bnad_rx_res_free(bnad, res_info); } /* Called with mutex_lock(&bnad->conf_mutex) held */ int bnad_setup_rx(struct bnad *bnad, u32 rx_id) { int err; struct bnad_rx_info *rx_info = &bnad->rx_info[rx_id]; struct bna_res_info *res_info = &bnad->rx_res_info[rx_id].res_info[0]; struct bna_intr_info *intr_info = &res_info[BNA_RX_RES_T_INTR].res_u.intr_info; struct bna_rx_config *rx_config = &bnad->rx_config[rx_id]; static const struct bna_rx_event_cbfn rx_cbfn = { .rcb_setup_cbfn = NULL, .rcb_destroy_cbfn = NULL, .ccb_setup_cbfn = bnad_cb_ccb_setup, .ccb_destroy_cbfn = bnad_cb_ccb_destroy, .rx_stall_cbfn = bnad_cb_rx_stall, .rx_cleanup_cbfn = bnad_cb_rx_cleanup, .rx_post_cbfn = bnad_cb_rx_post, }; struct bna_rx *rx; unsigned long flags; rx_info->rx_id = rx_id; /* Initialize the Rx object configuration */ bnad_init_rx_config(bnad, rx_config); /* Get BNA's resource requirement for one Rx object */ spin_lock_irqsave(&bnad->bna_lock, flags); bna_rx_res_req(rx_config, res_info); spin_unlock_irqrestore(&bnad->bna_lock, flags); /* Fill Unmap Q memory requirements */ BNAD_FILL_UNMAPQ_MEM_REQ(&res_info[BNA_RX_RES_MEM_T_UNMAPDQ], rx_config->num_paths, (rx_config->q0_depth * sizeof(struct bnad_rx_unmap)) + sizeof(struct bnad_rx_unmap_q)); if (rx_config->rxp_type != BNA_RXP_SINGLE) { BNAD_FILL_UNMAPQ_MEM_REQ(&res_info[BNA_RX_RES_MEM_T_UNMAPHQ], rx_config->num_paths, (rx_config->q1_depth * sizeof(struct bnad_rx_unmap) + sizeof(struct bnad_rx_unmap_q))); } /* Allocate resource */ err = bnad_rx_res_alloc(bnad, res_info, rx_id); if (err) return err; bnad_rx_ctrl_init(bnad, rx_id); /* Ask BNA to create one Rx object, supplying required resources */ spin_lock_irqsave(&bnad->bna_lock, flags); rx = bna_rx_create(&bnad->bna, bnad, rx_config, &rx_cbfn, res_info, rx_info); if (!rx) { err = -ENOMEM; spin_unlock_irqrestore(&bnad->bna_lock, flags); goto err_return; } rx_info->rx = rx; spin_unlock_irqrestore(&bnad->bna_lock, flags); INIT_WORK(&rx_info->rx_cleanup_work, (work_func_t)(bnad_rx_cleanup)); /* * Init NAPI, so that state is set to NAPI_STATE_SCHED, * so that IRQ handler cannot schedule NAPI at this point. */ bnad_napi_add(bnad, rx_id); /* Register ISR for the Rx object */ if (intr_info->intr_type == BNA_INTR_T_MSIX) { err = bnad_rx_msix_register(bnad, rx_info, rx_id, rx_config->num_paths); if (err) goto err_return; } spin_lock_irqsave(&bnad->bna_lock, flags); if (0 == rx_id) { /* Set up Dynamic Interrupt Moderation Vector */ if (bnad->cfg_flags & BNAD_CF_DIM_ENABLED) bna_rx_dim_reconfig(&bnad->bna, bna_napi_dim_vector); /* Enable VLAN filtering only on the default Rx */ bna_rx_vlanfilter_enable(rx); /* Start the DIM timer */ bnad_dim_timer_start(bnad); } bna_rx_enable(rx); spin_unlock_irqrestore(&bnad->bna_lock, flags); return 0; err_return: bnad_destroy_rx(bnad, rx_id); return err; } /* Called with conf_lock & bnad->bna_lock held */ void bnad_tx_coalescing_timeo_set(struct bnad *bnad) { struct bnad_tx_info *tx_info; tx_info = &bnad->tx_info[0]; if (!tx_info->tx) return; bna_tx_coalescing_timeo_set(tx_info->tx, bnad->tx_coalescing_timeo); } /* Called with conf_lock & bnad->bna_lock held */ void bnad_rx_coalescing_timeo_set(struct bnad *bnad) { struct bnad_rx_info *rx_info; int i; for (i = 0; i < bnad->num_rx; i++) { rx_info = &bnad->rx_info[i]; if (!rx_info->rx) continue; bna_rx_coalescing_timeo_set(rx_info->rx, bnad->rx_coalescing_timeo); } } /* * Called with bnad->bna_lock held */ int bnad_mac_addr_set_locked(struct bnad *bnad, const u8 *mac_addr) { int ret; if (!is_valid_ether_addr(mac_addr)) return -EADDRNOTAVAIL; /* If datapath is down, pretend everything went through */ if (!bnad->rx_info[0].rx) return 0; ret = bna_rx_ucast_set(bnad->rx_info[0].rx, mac_addr); if (ret != BNA_CB_SUCCESS) return -EADDRNOTAVAIL; return 0; } /* Should be called with conf_lock held */ int bnad_enable_default_bcast(struct bnad *bnad) { struct bnad_rx_info *rx_info = &bnad->rx_info[0]; int ret; unsigned long flags; init_completion(&bnad->bnad_completions.mcast_comp); spin_lock_irqsave(&bnad->bna_lock, flags); ret = bna_rx_mcast_add(rx_info->rx, bnad_bcast_addr, bnad_cb_rx_mcast_add); spin_unlock_irqrestore(&bnad->bna_lock, flags); if (ret == BNA_CB_SUCCESS) wait_for_completion(&bnad->bnad_completions.mcast_comp); else return -ENODEV; if (bnad->bnad_completions.mcast_comp_status != BNA_CB_SUCCESS) return -ENODEV; return 0; } /* Called with mutex_lock(&bnad->conf_mutex) held */ void bnad_restore_vlans(struct bnad *bnad, u32 rx_id) { u16 vid; unsigned long flags; for_each_set_bit(vid, bnad->active_vlans, VLAN_N_VID) { spin_lock_irqsave(&bnad->bna_lock, flags); bna_rx_vlan_add(bnad->rx_info[rx_id].rx, vid); spin_unlock_irqrestore(&bnad->bna_lock, flags); } } /* Statistics utilities */ void bnad_netdev_qstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats) { int i, j; for (i = 0; i < bnad->num_rx; i++) { for (j = 0; j < bnad->num_rxp_per_rx; j++) { if (bnad->rx_info[i].rx_ctrl[j].ccb) { stats->rx_packets += bnad->rx_info[i]. rx_ctrl[j].ccb->rcb[0]->rxq->rx_packets; stats->rx_bytes += bnad->rx_info[i]. rx_ctrl[j].ccb->rcb[0]->rxq->rx_bytes; if (bnad->rx_info[i].rx_ctrl[j].ccb->rcb[1] && bnad->rx_info[i].rx_ctrl[j].ccb-> rcb[1]->rxq) { stats->rx_packets += bnad->rx_info[i].rx_ctrl[j]. ccb->rcb[1]->rxq->rx_packets; stats->rx_bytes += bnad->rx_info[i].rx_ctrl[j]. ccb->rcb[1]->rxq->rx_bytes; } } } } for (i = 0; i < bnad->num_tx; i++) { for (j = 0; j < bnad->num_txq_per_tx; j++) { if (bnad->tx_info[i].tcb[j]) { stats->tx_packets += bnad->tx_info[i].tcb[j]->txq->tx_packets; stats->tx_bytes += bnad->tx_info[i].tcb[j]->txq->tx_bytes; } } } } /* * Must be called with the bna_lock held. */ void bnad_netdev_hwstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats) { struct bfi_enet_stats_mac *mac_stats; u32 bmap; int i; mac_stats = &bnad->stats.bna_stats->hw_stats.mac_stats; stats->rx_errors = mac_stats->rx_fcs_error + mac_stats->rx_alignment_error + mac_stats->rx_frame_length_error + mac_stats->rx_code_error + mac_stats->rx_undersize; stats->tx_errors = mac_stats->tx_fcs_error + mac_stats->tx_undersize; stats->rx_dropped = mac_stats->rx_drop; stats->tx_dropped = mac_stats->tx_drop; stats->multicast = mac_stats->rx_multicast; stats->collisions = mac_stats->tx_total_collision; stats->rx_length_errors = mac_stats->rx_frame_length_error; /* receive ring buffer overflow ?? */ stats->rx_crc_errors = mac_stats->rx_fcs_error; stats->rx_frame_errors = mac_stats->rx_alignment_error; /* recv'r fifo overrun */ bmap = bna_rx_rid_mask(&bnad->bna); for (i = 0; bmap; i++) { if (bmap & 1) { stats->rx_fifo_errors += bnad->stats.bna_stats-> hw_stats.rxf_stats[i].frame_drops; break; } bmap >>= 1; } } static void bnad_mbox_irq_sync(struct bnad *bnad) { u32 irq; unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); if (bnad->cfg_flags & BNAD_CF_MSIX) irq = bnad->msix_table[BNAD_MAILBOX_MSIX_INDEX].vector; else irq = bnad->pcidev->irq; spin_unlock_irqrestore(&bnad->bna_lock, flags); synchronize_irq(irq); } /* Utility used by bnad_start_xmit, for doing TSO */ static int bnad_tso_prepare(struct bnad *bnad, struct sk_buff *skb) { int err; err = skb_cow_head(skb, 0); if (err < 0) { BNAD_UPDATE_CTR(bnad, tso_err); return err; } /* * For TSO, the TCP checksum field is seeded with pseudo-header sum * excluding the length field. */ if (vlan_get_protocol(skb) == htons(ETH_P_IP)) { struct iphdr *iph = ip_hdr(skb); /* Do we really need these? */ iph->tot_len = 0; iph->check = 0; tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, IPPROTO_TCP, 0); BNAD_UPDATE_CTR(bnad, tso4); } else { tcp_v6_gso_csum_prep(skb); BNAD_UPDATE_CTR(bnad, tso6); } return 0; } /* * Initialize Q numbers depending on Rx Paths * Called with bnad->bna_lock held, because of cfg_flags * access. */ static void bnad_q_num_init(struct bnad *bnad) { int rxps; rxps = min((uint)num_online_cpus(), (uint)(BNAD_MAX_RX * BNAD_MAX_RXP_PER_RX)); if (!(bnad->cfg_flags & BNAD_CF_MSIX)) rxps = 1; /* INTx */ bnad->num_rx = 1; bnad->num_tx = 1; bnad->num_rxp_per_rx = rxps; bnad->num_txq_per_tx = BNAD_TXQ_NUM; } /* * Adjusts the Q numbers, given a number of msix vectors * Give preference to RSS as opposed to Tx priority Queues, * in such a case, just use 1 Tx Q * Called with bnad->bna_lock held b'cos of cfg_flags access */ static void bnad_q_num_adjust(struct bnad *bnad, int msix_vectors, int temp) { bnad->num_txq_per_tx = 1; if ((msix_vectors >= (bnad->num_tx * bnad->num_txq_per_tx) + bnad_rxqs_per_cq + BNAD_MAILBOX_MSIX_VECTORS) && (bnad->cfg_flags & BNAD_CF_MSIX)) { bnad->num_rxp_per_rx = msix_vectors - (bnad->num_tx * bnad->num_txq_per_tx) - BNAD_MAILBOX_MSIX_VECTORS; } else bnad->num_rxp_per_rx = 1; } /* Enable / disable ioceth */ static int bnad_ioceth_disable(struct bnad *bnad) { unsigned long flags; int err = 0; spin_lock_irqsave(&bnad->bna_lock, flags); init_completion(&bnad->bnad_completions.ioc_comp); bna_ioceth_disable(&bnad->bna.ioceth, BNA_HARD_CLEANUP); spin_unlock_irqrestore(&bnad->bna_lock, flags); wait_for_completion_timeout(&bnad->bnad_completions.ioc_comp, msecs_to_jiffies(BNAD_IOCETH_TIMEOUT)); err = bnad->bnad_completions.ioc_comp_status; return err; } static int bnad_ioceth_enable(struct bnad *bnad) { int err = 0; unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); init_completion(&bnad->bnad_completions.ioc_comp); bnad->bnad_completions.ioc_comp_status = BNA_CB_WAITING; bna_ioceth_enable(&bnad->bna.ioceth); spin_unlock_irqrestore(&bnad->bna_lock, flags); wait_for_completion_timeout(&bnad->bnad_completions.ioc_comp, msecs_to_jiffies(BNAD_IOCETH_TIMEOUT)); err = bnad->bnad_completions.ioc_comp_status; return err; } /* Free BNA resources */ static void bnad_res_free(struct bnad *bnad, struct bna_res_info *res_info, u32 res_val_max) { int i; for (i = 0; i < res_val_max; i++) bnad_mem_free(bnad, &res_info[i].res_u.mem_info); } /* Allocates memory and interrupt resources for BNA */ static int bnad_res_alloc(struct bnad *bnad, struct bna_res_info *res_info, u32 res_val_max) { int i, err; for (i = 0; i < res_val_max; i++) { err = bnad_mem_alloc(bnad, &res_info[i].res_u.mem_info); if (err) goto err_return; } return 0; err_return: bnad_res_free(bnad, res_info, res_val_max); return err; } /* Interrupt enable / disable */ static void bnad_enable_msix(struct bnad *bnad) { int i, ret; unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); if (!(bnad->cfg_flags & BNAD_CF_MSIX)) { spin_unlock_irqrestore(&bnad->bna_lock, flags); return; } spin_unlock_irqrestore(&bnad->bna_lock, flags); if (bnad->msix_table) return; bnad->msix_table = kcalloc(bnad->msix_num, sizeof(struct msix_entry), GFP_KERNEL); if (!bnad->msix_table) goto intx_mode; for (i = 0; i < bnad->msix_num; i++) bnad->msix_table[i].entry = i; ret = pci_enable_msix_range(bnad->pcidev, bnad->msix_table, 1, bnad->msix_num); if (ret < 0) { goto intx_mode; } else if (ret < bnad->msix_num) { dev_warn(&bnad->pcidev->dev, "%d MSI-X vectors allocated < %d requested\n", ret, bnad->msix_num); spin_lock_irqsave(&bnad->bna_lock, flags); /* ret = #of vectors that we got */ bnad_q_num_adjust(bnad, (ret - BNAD_MAILBOX_MSIX_VECTORS) / 2, (ret - BNAD_MAILBOX_MSIX_VECTORS) / 2); spin_unlock_irqrestore(&bnad->bna_lock, flags); bnad->msix_num = BNAD_NUM_TXQ + BNAD_NUM_RXP + BNAD_MAILBOX_MSIX_VECTORS; if (bnad->msix_num > ret) { pci_disable_msix(bnad->pcidev); goto intx_mode; } } pci_intx(bnad->pcidev, 0); return; intx_mode: dev_warn(&bnad->pcidev->dev, "MSI-X enable failed - operating in INTx mode\n"); kfree(bnad->msix_table); bnad->msix_table = NULL; bnad->msix_num = 0; spin_lock_irqsave(&bnad->bna_lock, flags); bnad->cfg_flags &= ~BNAD_CF_MSIX; bnad_q_num_init(bnad); spin_unlock_irqrestore(&bnad->bna_lock, flags); } static void bnad_disable_msix(struct bnad *bnad) { u32 cfg_flags; unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); cfg_flags = bnad->cfg_flags; if (bnad->cfg_flags & BNAD_CF_MSIX) bnad->cfg_flags &= ~BNAD_CF_MSIX; spin_unlock_irqrestore(&bnad->bna_lock, flags); if (cfg_flags & BNAD_CF_MSIX) { pci_disable_msix(bnad->pcidev); kfree(bnad->msix_table); bnad->msix_table = NULL; } } /* Netdev entry points */ static int bnad_open(struct net_device *netdev) { int err; struct bnad *bnad = netdev_priv(netdev); struct bna_pause_config pause_config; unsigned long flags; mutex_lock(&bnad->conf_mutex); /* Tx */ err = bnad_setup_tx(bnad, 0); if (err) goto err_return; /* Rx */ err = bnad_setup_rx(bnad, 0); if (err) goto cleanup_tx; /* Port */ pause_config.tx_pause = 0; pause_config.rx_pause = 0; spin_lock_irqsave(&bnad->bna_lock, flags); bna_enet_mtu_set(&bnad->bna.enet, BNAD_FRAME_SIZE(bnad->netdev->mtu), NULL); bna_enet_pause_config(&bnad->bna.enet, &pause_config); bna_enet_enable(&bnad->bna.enet); spin_unlock_irqrestore(&bnad->bna_lock, flags); /* Enable broadcast */ bnad_enable_default_bcast(bnad); /* Restore VLANs, if any */ bnad_restore_vlans(bnad, 0); /* Set the UCAST address */ spin_lock_irqsave(&bnad->bna_lock, flags); bnad_mac_addr_set_locked(bnad, netdev->dev_addr); spin_unlock_irqrestore(&bnad->bna_lock, flags); /* Start the stats timer */ bnad_stats_timer_start(bnad); mutex_unlock(&bnad->conf_mutex); return 0; cleanup_tx: bnad_destroy_tx(bnad, 0); err_return: mutex_unlock(&bnad->conf_mutex); return err; } static int bnad_stop(struct net_device *netdev) { struct bnad *bnad = netdev_priv(netdev); unsigned long flags; mutex_lock(&bnad->conf_mutex); /* Stop the stats timer */ bnad_stats_timer_stop(bnad); init_completion(&bnad->bnad_completions.enet_comp); spin_lock_irqsave(&bnad->bna_lock, flags); bna_enet_disable(&bnad->bna.enet, BNA_HARD_CLEANUP, bnad_cb_enet_disabled); spin_unlock_irqrestore(&bnad->bna_lock, flags); wait_for_completion(&bnad->bnad_completions.enet_comp); bnad_destroy_tx(bnad, 0); bnad_destroy_rx(bnad, 0); /* Synchronize mailbox IRQ */ bnad_mbox_irq_sync(bnad); mutex_unlock(&bnad->conf_mutex); return 0; } /* TX */ /* Returns 0 for success */ static int bnad_txq_wi_prepare(struct bnad *bnad, struct bna_tcb *tcb, struct sk_buff *skb, struct bna_txq_entry *txqent) { u16 flags = 0; u32 gso_size; u16 vlan_tag = 0; if (skb_vlan_tag_present(skb)) { vlan_tag = (u16)skb_vlan_tag_get(skb); flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN); } if (test_bit(BNAD_RF_CEE_RUNNING, &bnad->run_flags)) { vlan_tag = ((tcb->priority & 0x7) << VLAN_PRIO_SHIFT) | (vlan_tag & 0x1fff); flags |= (BNA_TXQ_WI_CF_INS_PRIO | BNA_TXQ_WI_CF_INS_VLAN); } txqent->hdr.wi.vlan_tag = htons(vlan_tag); if (skb_is_gso(skb)) { gso_size = skb_shinfo(skb)->gso_size; if (unlikely(gso_size > bnad->netdev->mtu)) { BNAD_UPDATE_CTR(bnad, tx_skb_mss_too_long); return -EINVAL; } if (unlikely((gso_size + skb_tcp_all_headers(skb)) >= skb->len)) { txqent->hdr.wi.opcode = htons(BNA_TXQ_WI_SEND); txqent->hdr.wi.lso_mss = 0; BNAD_UPDATE_CTR(bnad, tx_skb_tso_too_short); } else { txqent->hdr.wi.opcode = htons(BNA_TXQ_WI_SEND_LSO); txqent->hdr.wi.lso_mss = htons(gso_size); } if (bnad_tso_prepare(bnad, skb)) { BNAD_UPDATE_CTR(bnad, tx_skb_tso_prepare); return -EINVAL; } flags |= (BNA_TXQ_WI_CF_IP_CKSUM | BNA_TXQ_WI_CF_TCP_CKSUM); txqent->hdr.wi.l4_hdr_size_n_offset = htons(BNA_TXQ_WI_L4_HDR_N_OFFSET( tcp_hdrlen(skb) >> 2, skb_transport_offset(skb))); } else { txqent->hdr.wi.opcode = htons(BNA_TXQ_WI_SEND); txqent->hdr.wi.lso_mss = 0; if (unlikely(skb->len > (bnad->netdev->mtu + VLAN_ETH_HLEN))) { BNAD_UPDATE_CTR(bnad, tx_skb_non_tso_too_long); return -EINVAL; } if (skb->ip_summed == CHECKSUM_PARTIAL) { __be16 net_proto = vlan_get_protocol(skb); u8 proto = 0; if (net_proto == htons(ETH_P_IP)) proto = ip_hdr(skb)->protocol; #ifdef NETIF_F_IPV6_CSUM else if (net_proto == htons(ETH_P_IPV6)) { /* nexthdr may not be TCP immediately. */ proto = ipv6_hdr(skb)->nexthdr; } #endif if (proto == IPPROTO_TCP) { flags |= BNA_TXQ_WI_CF_TCP_CKSUM; txqent->hdr.wi.l4_hdr_size_n_offset = htons(BNA_TXQ_WI_L4_HDR_N_OFFSET (0, skb_transport_offset(skb))); BNAD_UPDATE_CTR(bnad, tcpcsum_offload); if (unlikely(skb_headlen(skb) < skb_tcp_all_headers(skb))) { BNAD_UPDATE_CTR(bnad, tx_skb_tcp_hdr); return -EINVAL; } } else if (proto == IPPROTO_UDP) { flags |= BNA_TXQ_WI_CF_UDP_CKSUM; txqent->hdr.wi.l4_hdr_size_n_offset = htons(BNA_TXQ_WI_L4_HDR_N_OFFSET (0, skb_transport_offset(skb))); BNAD_UPDATE_CTR(bnad, udpcsum_offload); if (unlikely(skb_headlen(skb) < skb_transport_offset(skb) + sizeof(struct udphdr))) { BNAD_UPDATE_CTR(bnad, tx_skb_udp_hdr); return -EINVAL; } } else { BNAD_UPDATE_CTR(bnad, tx_skb_csum_err); return -EINVAL; } } else txqent->hdr.wi.l4_hdr_size_n_offset = 0; } txqent->hdr.wi.flags = htons(flags); txqent->hdr.wi.frame_length = htonl(skb->len); return 0; } /* * bnad_start_xmit : Netdev entry point for Transmit * Called under lock held by net_device */ static netdev_tx_t bnad_start_xmit(struct sk_buff *skb, struct net_device *netdev) { struct bnad *bnad = netdev_priv(netdev); u32 txq_id = 0; struct bna_tcb *tcb = NULL; struct bnad_tx_unmap *unmap_q, *unmap, *head_unmap; u32 prod, q_depth, vect_id; u32 wis, vectors, len; int i; dma_addr_t dma_addr; struct bna_txq_entry *txqent; len = skb_headlen(skb); /* Sanity checks for the skb */ if (unlikely(skb->len <= ETH_HLEN)) { dev_kfree_skb_any(skb); BNAD_UPDATE_CTR(bnad, tx_skb_too_short); return NETDEV_TX_OK; } if (unlikely(len > BFI_TX_MAX_DATA_PER_VECTOR)) { dev_kfree_skb_any(skb); BNAD_UPDATE_CTR(bnad, tx_skb_headlen_zero); return NETDEV_TX_OK; } if (unlikely(len == 0)) { dev_kfree_skb_any(skb); BNAD_UPDATE_CTR(bnad, tx_skb_headlen_zero); return NETDEV_TX_OK; } tcb = bnad->tx_info[0].tcb[txq_id]; /* * Takes care of the Tx that is scheduled between clearing the flag * and the netif_tx_stop_all_queues() call. */ if (unlikely(!tcb || !test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) { dev_kfree_skb_any(skb); BNAD_UPDATE_CTR(bnad, tx_skb_stopping); return NETDEV_TX_OK; } q_depth = tcb->q_depth; prod = tcb->producer_index; unmap_q = tcb->unmap_q; vectors = 1 + skb_shinfo(skb)->nr_frags; wis = BNA_TXQ_WI_NEEDED(vectors); /* 4 vectors per work item */ if (unlikely(vectors > BFI_TX_MAX_VECTORS_PER_PKT)) { dev_kfree_skb_any(skb); BNAD_UPDATE_CTR(bnad, tx_skb_max_vectors); return NETDEV_TX_OK; } /* Check for available TxQ resources */ if (unlikely(wis > BNA_QE_FREE_CNT(tcb, q_depth))) { if ((*tcb->hw_consumer_index != tcb->consumer_index) && !test_and_set_bit(BNAD_TXQ_FREE_SENT, &tcb->flags)) { u32 sent; sent = bnad_txcmpl_process(bnad, tcb); if (likely(test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) bna_ib_ack(tcb->i_dbell, sent); smp_mb__before_atomic(); clear_bit(BNAD_TXQ_FREE_SENT, &tcb->flags); } else { netif_stop_queue(netdev); BNAD_UPDATE_CTR(bnad, netif_queue_stop); } smp_mb(); /* * Check again to deal with race condition between * netif_stop_queue here, and netif_wake_queue in * interrupt handler which is not inside netif tx lock. */ if (likely(wis > BNA_QE_FREE_CNT(tcb, q_depth))) { BNAD_UPDATE_CTR(bnad, netif_queue_stop); return NETDEV_TX_BUSY; } else { netif_wake_queue(netdev); BNAD_UPDATE_CTR(bnad, netif_queue_wakeup); } } txqent = &((struct bna_txq_entry *)tcb->sw_q)[prod]; head_unmap = &unmap_q[prod]; /* Program the opcode, flags, frame_len, num_vectors in WI */ if (bnad_txq_wi_prepare(bnad, tcb, skb, txqent)) { dev_kfree_skb_any(skb); return NETDEV_TX_OK; } txqent->hdr.wi.reserved = 0; txqent->hdr.wi.num_vectors = vectors; head_unmap->skb = skb; head_unmap->nvecs = 0; /* Program the vectors */ unmap = head_unmap; dma_addr = dma_map_single(&bnad->pcidev->dev, skb->data, len, DMA_TO_DEVICE); if (dma_mapping_error(&bnad->pcidev->dev, dma_addr)) { dev_kfree_skb_any(skb); BNAD_UPDATE_CTR(bnad, tx_skb_map_failed); return NETDEV_TX_OK; } BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[0].host_addr); txqent->vector[0].length = htons(len); dma_unmap_addr_set(&unmap->vectors[0], dma_addr, dma_addr); head_unmap->nvecs++; for (i = 0, vect_id = 0; i < vectors - 1; i++) { const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; u32 size = skb_frag_size(frag); if (unlikely(size == 0)) { /* Undo the changes starting at tcb->producer_index */ bnad_tx_buff_unmap(bnad, unmap_q, q_depth, tcb->producer_index); dev_kfree_skb_any(skb); BNAD_UPDATE_CTR(bnad, tx_skb_frag_zero); return NETDEV_TX_OK; } len += size; vect_id++; if (vect_id == BFI_TX_MAX_VECTORS_PER_WI) { vect_id = 0; BNA_QE_INDX_INC(prod, q_depth); txqent = &((struct bna_txq_entry *)tcb->sw_q)[prod]; txqent->hdr.wi_ext.opcode = htons(BNA_TXQ_WI_EXTENSION); unmap = &unmap_q[prod]; } dma_addr = skb_frag_dma_map(&bnad->pcidev->dev, frag, 0, size, DMA_TO_DEVICE); if (dma_mapping_error(&bnad->pcidev->dev, dma_addr)) { /* Undo the changes starting at tcb->producer_index */ bnad_tx_buff_unmap(bnad, unmap_q, q_depth, tcb->producer_index); dev_kfree_skb_any(skb); BNAD_UPDATE_CTR(bnad, tx_skb_map_failed); return NETDEV_TX_OK; } dma_unmap_len_set(&unmap->vectors[vect_id], dma_len, size); BNA_SET_DMA_ADDR(dma_addr, &txqent->vector[vect_id].host_addr); txqent->vector[vect_id].length = htons(size); dma_unmap_addr_set(&unmap->vectors[vect_id], dma_addr, dma_addr); head_unmap->nvecs++; } if (unlikely(len != skb->len)) { /* Undo the changes starting at tcb->producer_index */ bnad_tx_buff_unmap(bnad, unmap_q, q_depth, tcb->producer_index); dev_kfree_skb_any(skb); BNAD_UPDATE_CTR(bnad, tx_skb_len_mismatch); return NETDEV_TX_OK; } BNA_QE_INDX_INC(prod, q_depth); tcb->producer_index = prod; wmb(); if (unlikely(!test_bit(BNAD_TXQ_TX_STARTED, &tcb->flags))) return NETDEV_TX_OK; skb_tx_timestamp(skb); bna_txq_prod_indx_doorbell(tcb); return NETDEV_TX_OK; } /* * Used spin_lock to synchronize reading of stats structures, which * is written by BNA under the same lock. */ static void bnad_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) { struct bnad *bnad = netdev_priv(netdev); unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); bnad_netdev_qstats_fill(bnad, stats); bnad_netdev_hwstats_fill(bnad, stats); spin_unlock_irqrestore(&bnad->bna_lock, flags); } static void bnad_set_rx_ucast_fltr(struct bnad *bnad) { struct net_device *netdev = bnad->netdev; int uc_count = netdev_uc_count(netdev); enum bna_cb_status ret; u8 *mac_list; struct netdev_hw_addr *ha; int entry; if (netdev_uc_empty(bnad->netdev)) { bna_rx_ucast_listset(bnad->rx_info[0].rx, 0, NULL); return; } if (uc_count > bna_attr(&bnad->bna)->num_ucmac) goto mode_default; mac_list = kcalloc(ETH_ALEN, uc_count, GFP_ATOMIC); if (mac_list == NULL) goto mode_default; entry = 0; netdev_for_each_uc_addr(ha, netdev) { ether_addr_copy(&mac_list[entry * ETH_ALEN], &ha->addr[0]); entry++; } ret = bna_rx_ucast_listset(bnad->rx_info[0].rx, entry, mac_list); kfree(mac_list); if (ret != BNA_CB_SUCCESS) goto mode_default; return; /* ucast packets not in UCAM are routed to default function */ mode_default: bnad->cfg_flags |= BNAD_CF_DEFAULT; bna_rx_ucast_listset(bnad->rx_info[0].rx, 0, NULL); } static void bnad_set_rx_mcast_fltr(struct bnad *bnad) { struct net_device *netdev = bnad->netdev; int mc_count = netdev_mc_count(netdev); enum bna_cb_status ret; u8 *mac_list; if (netdev->flags & IFF_ALLMULTI) goto mode_allmulti; if (netdev_mc_empty(netdev)) return; if (mc_count > bna_attr(&bnad->bna)->num_mcmac) goto mode_allmulti; mac_list = kcalloc(mc_count + 1, ETH_ALEN, GFP_ATOMIC); if (mac_list == NULL) goto mode_allmulti; ether_addr_copy(&mac_list[0], &bnad_bcast_addr[0]); /* copy rest of the MCAST addresses */ bnad_netdev_mc_list_get(netdev, mac_list); ret = bna_rx_mcast_listset(bnad->rx_info[0].rx, mc_count + 1, mac_list); kfree(mac_list); if (ret != BNA_CB_SUCCESS) goto mode_allmulti; return; mode_allmulti: bnad->cfg_flags |= BNAD_CF_ALLMULTI; bna_rx_mcast_delall(bnad->rx_info[0].rx); } void bnad_set_rx_mode(struct net_device *netdev) { struct bnad *bnad = netdev_priv(netdev); enum bna_rxmode new_mode, mode_mask; unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); if (bnad->rx_info[0].rx == NULL) { spin_unlock_irqrestore(&bnad->bna_lock, flags); return; } /* clear bnad flags to update it with new settings */ bnad->cfg_flags &= ~(BNAD_CF_PROMISC | BNAD_CF_DEFAULT | BNAD_CF_ALLMULTI); new_mode = 0; if (netdev->flags & IFF_PROMISC) { new_mode |= BNAD_RXMODE_PROMISC_DEFAULT; bnad->cfg_flags |= BNAD_CF_PROMISC; } else { bnad_set_rx_mcast_fltr(bnad); if (bnad->cfg_flags & BNAD_CF_ALLMULTI) new_mode |= BNA_RXMODE_ALLMULTI; bnad_set_rx_ucast_fltr(bnad); if (bnad->cfg_flags & BNAD_CF_DEFAULT) new_mode |= BNA_RXMODE_DEFAULT; } mode_mask = BNA_RXMODE_PROMISC | BNA_RXMODE_DEFAULT | BNA_RXMODE_ALLMULTI; bna_rx_mode_set(bnad->rx_info[0].rx, new_mode, mode_mask); spin_unlock_irqrestore(&bnad->bna_lock, flags); } /* * bna_lock is used to sync writes to netdev->addr * conf_lock cannot be used since this call may be made * in a non-blocking context. */ static int bnad_set_mac_address(struct net_device *netdev, void *addr) { int err; struct bnad *bnad = netdev_priv(netdev); struct sockaddr *sa = (struct sockaddr *)addr; unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); err = bnad_mac_addr_set_locked(bnad, sa->sa_data); if (!err) eth_hw_addr_set(netdev, sa->sa_data); spin_unlock_irqrestore(&bnad->bna_lock, flags); return err; } static int bnad_mtu_set(struct bnad *bnad, int frame_size) { unsigned long flags; init_completion(&bnad->bnad_completions.mtu_comp); spin_lock_irqsave(&bnad->bna_lock, flags); bna_enet_mtu_set(&bnad->bna.enet, frame_size, bnad_cb_enet_mtu_set); spin_unlock_irqrestore(&bnad->bna_lock, flags); wait_for_completion(&bnad->bnad_completions.mtu_comp); return bnad->bnad_completions.mtu_comp_status; } static int bnad_change_mtu(struct net_device *netdev, int new_mtu) { int err, mtu; struct bnad *bnad = netdev_priv(netdev); u32 frame, new_frame; mutex_lock(&bnad->conf_mutex); mtu = netdev->mtu; netdev->mtu = new_mtu; frame = BNAD_FRAME_SIZE(mtu); new_frame = BNAD_FRAME_SIZE(new_mtu); /* check if multi-buffer needs to be enabled */ if (BNAD_PCI_DEV_IS_CAT2(bnad) && netif_running(bnad->netdev)) { /* only when transition is over 4K */ if ((frame <= 4096 && new_frame > 4096) || (frame > 4096 && new_frame <= 4096)) bnad_reinit_rx(bnad); } err = bnad_mtu_set(bnad, new_frame); if (err) err = -EBUSY; mutex_unlock(&bnad->conf_mutex); return err; } static int bnad_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid) { struct bnad *bnad = netdev_priv(netdev); unsigned long flags; if (!bnad->rx_info[0].rx) return 0; mutex_lock(&bnad->conf_mutex); spin_lock_irqsave(&bnad->bna_lock, flags); bna_rx_vlan_add(bnad->rx_info[0].rx, vid); set_bit(vid, bnad->active_vlans); spin_unlock_irqrestore(&bnad->bna_lock, flags); mutex_unlock(&bnad->conf_mutex); return 0; } static int bnad_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) { struct bnad *bnad = netdev_priv(netdev); unsigned long flags; if (!bnad->rx_info[0].rx) return 0; mutex_lock(&bnad->conf_mutex); spin_lock_irqsave(&bnad->bna_lock, flags); clear_bit(vid, bnad->active_vlans); bna_rx_vlan_del(bnad->rx_info[0].rx, vid); spin_unlock_irqrestore(&bnad->bna_lock, flags); mutex_unlock(&bnad->conf_mutex); return 0; } static int bnad_set_features(struct net_device *dev, netdev_features_t features) { struct bnad *bnad = netdev_priv(dev); netdev_features_t changed = features ^ dev->features; if ((changed & NETIF_F_HW_VLAN_CTAG_RX) && netif_running(dev)) { unsigned long flags; spin_lock_irqsave(&bnad->bna_lock, flags); if (features & NETIF_F_HW_VLAN_CTAG_RX) bna_rx_vlan_strip_enable(bnad->rx_info[0].rx); else bna_rx_vlan_strip_disable(bnad->rx_info[0].rx); spin_unlock_irqrestore(&bnad->bna_lock, flags); } return 0; } #ifdef CONFIG_NET_POLL_CONTROLLER static void bnad_netpoll(struct net_device *netdev) { struct bnad *bnad = netdev_priv(netdev); struct bnad_rx_info *rx_info; struct bnad_rx_ctrl *rx_ctrl; u32 curr_mask; int i, j; if (!(bnad->cfg_flags & BNAD_CF_MSIX)) { bna_intx_disable(&bnad->bna, curr_mask); bnad_isr(bnad->pcidev->irq, netdev); bna_intx_enable(&bnad->bna, curr_mask); } else { /* * Tx processing may happen in sending context, so no need * to explicitly process completions here */ /* Rx processing */ for (i = 0; i < bnad->num_rx; i++) { rx_info = &bnad->rx_info[i]; if (!rx_info->rx) continue; for (j = 0; j < bnad->num_rxp_per_rx; j++) { rx_ctrl = &rx_info->rx_ctrl[j]; if (rx_ctrl->ccb) bnad_netif_rx_schedule_poll(bnad, rx_ctrl->ccb); } } } } #endif static const struct net_device_ops bnad_netdev_ops = { .ndo_open = bnad_open, .ndo_stop = bnad_stop, .ndo_start_xmit = bnad_start_xmit, .ndo_get_stats64 = bnad_get_stats64, .ndo_set_rx_mode = bnad_set_rx_mode, .ndo_validate_addr = eth_validate_addr, .ndo_set_mac_address = bnad_set_mac_address, .ndo_change_mtu = bnad_change_mtu, .ndo_vlan_rx_add_vid = bnad_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = bnad_vlan_rx_kill_vid, .ndo_set_features = bnad_set_features, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = bnad_netpoll #endif }; static void bnad_netdev_init(struct bnad *bnad) { struct net_device *netdev = bnad->netdev; netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; netdev->vlan_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6; netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HIGHDMA; netdev->mem_start = bnad->mmio_start; netdev->mem_end = bnad->mmio_start + bnad->mmio_len - 1; /* MTU range: 46 - 9000 */ netdev->min_mtu = ETH_ZLEN - ETH_HLEN; netdev->max_mtu = BNAD_JUMBO_MTU; netdev->netdev_ops = &bnad_netdev_ops; bnad_set_ethtool_ops(netdev); } /* * 1. Initialize the bnad structure * 2. Setup netdev pointer in pci_dev * 3. Initialize no. of TxQ & CQs & MSIX vectors * 4. Initialize work queue. */ static int bnad_init(struct bnad *bnad, struct pci_dev *pdev, struct net_device *netdev) { unsigned long flags; SET_NETDEV_DEV(netdev, &pdev->dev); pci_set_drvdata(pdev, netdev); bnad->netdev = netdev; bnad->pcidev = pdev; bnad->mmio_start = pci_resource_start(pdev, 0); bnad->mmio_len = pci_resource_len(pdev, 0); bnad->bar0 = ioremap(bnad->mmio_start, bnad->mmio_len); if (!bnad->bar0) { dev_err(&pdev->dev, "ioremap for bar0 failed\n"); return -ENOMEM; } dev_info(&pdev->dev, "bar0 mapped to %p, len %llu\n", bnad->bar0, (unsigned long long) bnad->mmio_len); spin_lock_irqsave(&bnad->bna_lock, flags); if (!bnad_msix_disable) bnad->cfg_flags = BNAD_CF_MSIX; bnad->cfg_flags |= BNAD_CF_DIM_ENABLED; bnad_q_num_init(bnad); spin_unlock_irqrestore(&bnad->bna_lock, flags); bnad->msix_num = (bnad->num_tx * bnad->num_txq_per_tx) + (bnad->num_rx * bnad->num_rxp_per_rx) + BNAD_MAILBOX_MSIX_VECTORS; bnad->txq_depth = BNAD_TXQ_DEPTH; bnad->rxq_depth = BNAD_RXQ_DEPTH; bnad->tx_coalescing_timeo = BFI_TX_COALESCING_TIMEO; bnad->rx_coalescing_timeo = BFI_RX_COALESCING_TIMEO; sprintf(bnad->wq_name, "%s_wq_%d", BNAD_NAME, bnad->id); bnad->work_q = create_singlethread_workqueue(bnad->wq_name); if (!bnad->work_q) { iounmap(bnad->bar0); return -ENOMEM; } return 0; } /* * Must be called after bnad_pci_uninit() * so that iounmap() and pci_set_drvdata(NULL) * happens only after PCI uninitialization. */ static void bnad_uninit(struct bnad *bnad) { if (bnad->work_q) { destroy_workqueue(bnad->work_q); bnad->work_q = NULL; } if (bnad->bar0) iounmap(bnad->bar0); } /* * Initialize locks a) Per ioceth mutes used for serializing configuration changes from OS interface b) spin lock used to protect bna state machine */ static void bnad_lock_init(struct bnad *bnad) { spin_lock_init(&bnad->bna_lock); mutex_init(&bnad->conf_mutex); } static void bnad_lock_uninit(struct bnad *bnad) { mutex_destroy(&bnad->conf_mutex); } /* PCI Initialization */ static int bnad_pci_init(struct bnad *bnad, struct pci_dev *pdev) { int err; err = pci_enable_device(pdev); if (err) return err; err = pci_request_regions(pdev, BNAD_NAME); if (err) goto disable_device; err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (err) goto release_regions; pci_set_master(pdev); return 0; release_regions: pci_release_regions(pdev); disable_device: pci_disable_device(pdev); return err; } static void bnad_pci_uninit(struct pci_dev *pdev) { pci_release_regions(pdev); pci_disable_device(pdev); } static int bnad_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pcidev_id) { int err; struct bnad *bnad; struct bna *bna; struct net_device *netdev; struct bfa_pcidev pcidev_info; unsigned long flags; mutex_lock(&bnad_fwimg_mutex); if (!cna_get_firmware_buf(pdev)) { mutex_unlock(&bnad_fwimg_mutex); dev_err(&pdev->dev, "failed to load firmware image!\n"); return -ENODEV; } mutex_unlock(&bnad_fwimg_mutex); /* * Allocates sizeof(struct net_device + struct bnad) * bnad = netdev->priv */ netdev = alloc_etherdev(sizeof(struct bnad)); if (!netdev) { err = -ENOMEM; return err; } bnad = netdev_priv(netdev); bnad_lock_init(bnad); bnad->id = atomic_inc_return(&bna_id) - 1; mutex_lock(&bnad->conf_mutex); /* PCI initialization */ err = bnad_pci_init(bnad, pdev); if (err) goto unlock_mutex; /* * Initialize bnad structure * Setup relation between pci_dev & netdev */ err = bnad_init(bnad, pdev, netdev); if (err) goto pci_uninit; /* Initialize netdev structure, set up ethtool ops */ bnad_netdev_init(bnad); /* Set link to down state */ netif_carrier_off(netdev); /* Setup the debugfs node for this bfad */ if (bna_debugfs_enable) bnad_debugfs_init(bnad); /* Get resource requirement form bna */ spin_lock_irqsave(&bnad->bna_lock, flags); bna_res_req(&bnad->res_info[0]); spin_unlock_irqrestore(&bnad->bna_lock, flags); /* Allocate resources from bna */ err = bnad_res_alloc(bnad, &bnad->res_info[0], BNA_RES_T_MAX); if (err) goto drv_uninit; bna = &bnad->bna; /* Setup pcidev_info for bna_init() */ pcidev_info.pci_slot = PCI_SLOT(bnad->pcidev->devfn); pcidev_info.pci_func = PCI_FUNC(bnad->pcidev->devfn); pcidev_info.device_id = bnad->pcidev->device; pcidev_info.pci_bar_kva = bnad->bar0; spin_lock_irqsave(&bnad->bna_lock, flags); bna_init(bna, bnad, &pcidev_info, &bnad->res_info[0]); spin_unlock_irqrestore(&bnad->bna_lock, flags); bnad->stats.bna_stats = &bna->stats; bnad_enable_msix(bnad); err = bnad_mbox_irq_alloc(bnad); if (err) goto res_free; /* Set up timers */ timer_setup(&bnad->bna.ioceth.ioc.ioc_timer, bnad_ioc_timeout, 0); timer_setup(&bnad->bna.ioceth.ioc.hb_timer, bnad_ioc_hb_check, 0); timer_setup(&bnad->bna.ioceth.ioc.iocpf_timer, bnad_iocpf_timeout, 0); timer_setup(&bnad->bna.ioceth.ioc.sem_timer, bnad_iocpf_sem_timeout, 0); /* * Start the chip * If the call back comes with error, we bail out. * This is a catastrophic error. */ err = bnad_ioceth_enable(bnad); if (err) { dev_err(&pdev->dev, "initialization failed err=%d\n", err); goto probe_success; } spin_lock_irqsave(&bnad->bna_lock, flags); if (bna_num_txq_set(bna, BNAD_NUM_TXQ + 1) || bna_num_rxp_set(bna, BNAD_NUM_RXP + 1)) { bnad_q_num_adjust(bnad, bna_attr(bna)->num_txq - 1, bna_attr(bna)->num_rxp - 1); if (bna_num_txq_set(bna, BNAD_NUM_TXQ + 1) || bna_num_rxp_set(bna, BNAD_NUM_RXP + 1)) err = -EIO; } spin_unlock_irqrestore(&bnad->bna_lock, flags); if (err) goto disable_ioceth; spin_lock_irqsave(&bnad->bna_lock, flags); bna_mod_res_req(&bnad->bna, &bnad->mod_res_info[0]); spin_unlock_irqrestore(&bnad->bna_lock, flags); err = bnad_res_alloc(bnad, &bnad->mod_res_info[0], BNA_MOD_RES_T_MAX); if (err) { err = -EIO; goto disable_ioceth; } spin_lock_irqsave(&bnad->bna_lock, flags); bna_mod_init(&bnad->bna, &bnad->mod_res_info[0]); spin_unlock_irqrestore(&bnad->bna_lock, flags); /* Get the burnt-in mac */ spin_lock_irqsave(&bnad->bna_lock, flags); bna_enet_perm_mac_get(&bna->enet, bnad->perm_addr); bnad_set_netdev_perm_addr(bnad); spin_unlock_irqrestore(&bnad->bna_lock, flags); mutex_unlock(&bnad->conf_mutex); /* Finally, reguister with net_device layer */ err = register_netdev(netdev); if (err) { dev_err(&pdev->dev, "registering net device failed\n"); goto probe_uninit; } set_bit(BNAD_RF_NETDEV_REGISTERED, &bnad->run_flags); return 0; probe_success: mutex_unlock(&bnad->conf_mutex); return 0; probe_uninit: mutex_lock(&bnad->conf_mutex); bnad_res_free(bnad, &bnad->mod_res_info[0], BNA_MOD_RES_T_MAX); disable_ioceth: bnad_ioceth_disable(bnad); del_timer_sync(&bnad->bna.ioceth.ioc.ioc_timer); del_timer_sync(&bnad->bna.ioceth.ioc.sem_timer); del_timer_sync(&bnad->bna.ioceth.ioc.hb_timer); spin_lock_irqsave(&bnad->bna_lock, flags); bna_uninit(bna); spin_unlock_irqrestore(&bnad->bna_lock, flags); bnad_mbox_irq_free(bnad); bnad_disable_msix(bnad); res_free: bnad_res_free(bnad, &bnad->res_info[0], BNA_RES_T_MAX); drv_uninit: /* Remove the debugfs node for this bnad */ kfree(bnad->regdata); bnad_debugfs_uninit(bnad); bnad_uninit(bnad); pci_uninit: bnad_pci_uninit(pdev); unlock_mutex: mutex_unlock(&bnad->conf_mutex); bnad_lock_uninit(bnad); free_netdev(netdev); return err; } static void bnad_pci_remove(struct pci_dev *pdev) { struct net_device *netdev = pci_get_drvdata(pdev); struct bnad *bnad; struct bna *bna; unsigned long flags; if (!netdev) return; bnad = netdev_priv(netdev); bna = &bnad->bna; if (test_and_clear_bit(BNAD_RF_NETDEV_REGISTERED, &bnad->run_flags)) unregister_netdev(netdev); mutex_lock(&bnad->conf_mutex); bnad_ioceth_disable(bnad); del_timer_sync(&bnad->bna.ioceth.ioc.ioc_timer); del_timer_sync(&bnad->bna.ioceth.ioc.sem_timer); del_timer_sync(&bnad->bna.ioceth.ioc.hb_timer); spin_lock_irqsave(&bnad->bna_lock, flags); bna_uninit(bna); spin_unlock_irqrestore(&bnad->bna_lock, flags); bnad_res_free(bnad, &bnad->mod_res_info[0], BNA_MOD_RES_T_MAX); bnad_res_free(bnad, &bnad->res_info[0], BNA_RES_T_MAX); bnad_mbox_irq_free(bnad); bnad_disable_msix(bnad); bnad_pci_uninit(pdev); mutex_unlock(&bnad->conf_mutex); bnad_lock_uninit(bnad); /* Remove the debugfs node for this bnad */ kfree(bnad->regdata); bnad_debugfs_uninit(bnad); bnad_uninit(bnad); free_netdev(netdev); } static const struct pci_device_id bnad_pci_id_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_BROCADE, PCI_DEVICE_ID_BROCADE_CT), .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = 0xffff00 }, { PCI_DEVICE(PCI_VENDOR_ID_BROCADE, BFA_PCI_DEVICE_ID_CT2), .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = 0xffff00 }, {0, }, }; MODULE_DEVICE_TABLE(pci, bnad_pci_id_table); static struct pci_driver bnad_pci_driver = { .name = BNAD_NAME, .id_table = bnad_pci_id_table, .probe = bnad_pci_probe, .remove = bnad_pci_remove, }; static int __init bnad_module_init(void) { int err; bfa_nw_ioc_auto_recover(bnad_ioc_auto_recover); err = pci_register_driver(&bnad_pci_driver); if (err < 0) { pr_err("bna: PCI driver registration failed err=%d\n", err); return err; } return 0; } static void __exit bnad_module_exit(void) { pci_unregister_driver(&bnad_pci_driver); release_firmware(bfi_fw); } module_init(bnad_module_init); module_exit(bnad_module_exit); MODULE_AUTHOR("Brocade"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("QLogic BR-series 10G PCIe Ethernet driver"); MODULE_FIRMWARE(CNA_FW_FILE_CT); MODULE_FIRMWARE(CNA_FW_FILE_CT2);
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