diff options
Diffstat (limited to 'drivers/net/bnx2x/bnx2x_cmn.c')
| -rw-r--r-- | drivers/net/bnx2x/bnx2x_cmn.c | 2956 |
1 files changed, 0 insertions, 2956 deletions
diff --git a/drivers/net/bnx2x/bnx2x_cmn.c b/drivers/net/bnx2x/bnx2x_cmn.c deleted file mode 100644 index 289044332ed..00000000000 --- a/drivers/net/bnx2x/bnx2x_cmn.c +++ /dev/null @@ -1,2956 +0,0 @@ -/* bnx2x_cmn.c: Broadcom Everest network driver. - * - * Copyright (c) 2007-2011 Broadcom Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation. - * - * Maintained by: Eilon Greenstein <eilong@broadcom.com> - * Written by: Eliezer Tamir - * Based on code from Michael Chan's bnx2 driver - * UDP CSUM errata workaround by Arik Gendelman - * Slowpath and fastpath rework by Vladislav Zolotarov - * Statistics and Link management by Yitchak Gertner - * - */ - -#include <linux/etherdevice.h> -#include <linux/if_vlan.h> -#include <linux/ip.h> -#include <net/ipv6.h> -#include <net/ip6_checksum.h> -#include <linux/firmware.h> -#include <linux/prefetch.h> -#include "bnx2x_cmn.h" - -#include "bnx2x_init.h" - -static int bnx2x_setup_irqs(struct bnx2x *bp); - -/** - * bnx2x_bz_fp - zero content of the fastpath structure. - * - * @bp: driver handle - * @index: fastpath index to be zeroed - * - * Makes sure the contents of the bp->fp[index].napi is kept - * intact. - */ -static inline void bnx2x_bz_fp(struct bnx2x *bp, int index) -{ - struct bnx2x_fastpath *fp = &bp->fp[index]; - struct napi_struct orig_napi = fp->napi; - /* bzero bnx2x_fastpath contents */ - memset(fp, 0, sizeof(*fp)); - - /* Restore the NAPI object as it has been already initialized */ - fp->napi = orig_napi; -} - -/** - * bnx2x_move_fp - move content of the fastpath structure. - * - * @bp: driver handle - * @from: source FP index - * @to: destination FP index - * - * Makes sure the contents of the bp->fp[to].napi is kept - * intact. - */ -static inline void bnx2x_move_fp(struct bnx2x *bp, int from, int to) -{ - struct bnx2x_fastpath *from_fp = &bp->fp[from]; - struct bnx2x_fastpath *to_fp = &bp->fp[to]; - struct napi_struct orig_napi = to_fp->napi; - /* Move bnx2x_fastpath contents */ - memcpy(to_fp, from_fp, sizeof(*to_fp)); - to_fp->index = to; - - /* Restore the NAPI object as it has been already initialized */ - to_fp->napi = orig_napi; -} - -/* free skb in the packet ring at pos idx - * return idx of last bd freed - */ -static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp, - u16 idx) -{ - struct sw_tx_bd *tx_buf = &fp->tx_buf_ring[idx]; - struct eth_tx_start_bd *tx_start_bd; - struct eth_tx_bd *tx_data_bd; - struct sk_buff *skb = tx_buf->skb; - u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons; - int nbd; - - /* prefetch skb end pointer to speedup dev_kfree_skb() */ - prefetch(&skb->end); - - DP(BNX2X_MSG_OFF, "pkt_idx %d buff @(%p)->skb %p\n", - idx, tx_buf, skb); - - /* unmap first bd */ - DP(BNX2X_MSG_OFF, "free bd_idx %d\n", bd_idx); - tx_start_bd = &fp->tx_desc_ring[bd_idx].start_bd; - dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd), - BD_UNMAP_LEN(tx_start_bd), DMA_TO_DEVICE); - - nbd = le16_to_cpu(tx_start_bd->nbd) - 1; -#ifdef BNX2X_STOP_ON_ERROR - if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) { - BNX2X_ERR("BAD nbd!\n"); - bnx2x_panic(); - } -#endif - new_cons = nbd + tx_buf->first_bd; - - /* Get the next bd */ - bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); - - /* Skip a parse bd... */ - --nbd; - bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); - - /* ...and the TSO split header bd since they have no mapping */ - if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) { - --nbd; - bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); - } - - /* now free frags */ - while (nbd > 0) { - - DP(BNX2X_MSG_OFF, "free frag bd_idx %d\n", bd_idx); - tx_data_bd = &fp->tx_desc_ring[bd_idx].reg_bd; - dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd), - BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE); - if (--nbd) - bd_idx = TX_BD(NEXT_TX_IDX(bd_idx)); - } - - /* release skb */ - WARN_ON(!skb); - dev_kfree_skb_any(skb); - tx_buf->first_bd = 0; - tx_buf->skb = NULL; - - return new_cons; -} - -int bnx2x_tx_int(struct bnx2x_fastpath *fp) -{ - struct bnx2x *bp = fp->bp; - struct netdev_queue *txq; - u16 hw_cons, sw_cons, bd_cons = fp->tx_bd_cons; - -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) - return -1; -#endif - - txq = netdev_get_tx_queue(bp->dev, fp->index); - hw_cons = le16_to_cpu(*fp->tx_cons_sb); - sw_cons = fp->tx_pkt_cons; - - while (sw_cons != hw_cons) { - u16 pkt_cons; - - pkt_cons = TX_BD(sw_cons); - - DP(NETIF_MSG_TX_DONE, "queue[%d]: hw_cons %u sw_cons %u " - " pkt_cons %u\n", - fp->index, hw_cons, sw_cons, pkt_cons); - - bd_cons = bnx2x_free_tx_pkt(bp, fp, pkt_cons); - sw_cons++; - } - - fp->tx_pkt_cons = sw_cons; - fp->tx_bd_cons = bd_cons; - - /* Need to make the tx_bd_cons update visible to start_xmit() - * before checking for netif_tx_queue_stopped(). Without the - * memory barrier, there is a small possibility that - * start_xmit() will miss it and cause the queue to be stopped - * forever. - */ - smp_mb(); - - if (unlikely(netif_tx_queue_stopped(txq))) { - /* Taking tx_lock() is needed to prevent reenabling the queue - * while it's empty. This could have happen if rx_action() gets - * suspended in bnx2x_tx_int() after the condition before - * netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()): - * - * stops the queue->sees fresh tx_bd_cons->releases the queue-> - * sends some packets consuming the whole queue again-> - * stops the queue - */ - - __netif_tx_lock(txq, smp_processor_id()); - - if ((netif_tx_queue_stopped(txq)) && - (bp->state == BNX2X_STATE_OPEN) && - (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3)) - netif_tx_wake_queue(txq); - - __netif_tx_unlock(txq); - } - return 0; -} - -static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp, - u16 idx) -{ - u16 last_max = fp->last_max_sge; - - if (SUB_S16(idx, last_max) > 0) - fp->last_max_sge = idx; -} - -static void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp, - struct eth_fast_path_rx_cqe *fp_cqe) -{ - struct bnx2x *bp = fp->bp; - u16 sge_len = SGE_PAGE_ALIGN(le16_to_cpu(fp_cqe->pkt_len) - - le16_to_cpu(fp_cqe->len_on_bd)) >> - SGE_PAGE_SHIFT; - u16 last_max, last_elem, first_elem; - u16 delta = 0; - u16 i; - - if (!sge_len) - return; - - /* First mark all used pages */ - for (i = 0; i < sge_len; i++) - SGE_MASK_CLEAR_BIT(fp, - RX_SGE(le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[i]))); - - DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n", - sge_len - 1, le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[sge_len - 1])); - - /* Here we assume that the last SGE index is the biggest */ - prefetch((void *)(fp->sge_mask)); - bnx2x_update_last_max_sge(fp, - le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[sge_len - 1])); - - last_max = RX_SGE(fp->last_max_sge); - last_elem = last_max >> RX_SGE_MASK_ELEM_SHIFT; - first_elem = RX_SGE(fp->rx_sge_prod) >> RX_SGE_MASK_ELEM_SHIFT; - - /* If ring is not full */ - if (last_elem + 1 != first_elem) - last_elem++; - - /* Now update the prod */ - for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) { - if (likely(fp->sge_mask[i])) - break; - - fp->sge_mask[i] = RX_SGE_MASK_ELEM_ONE_MASK; - delta += RX_SGE_MASK_ELEM_SZ; - } - - if (delta > 0) { - fp->rx_sge_prod += delta; - /* clear page-end entries */ - bnx2x_clear_sge_mask_next_elems(fp); - } - - DP(NETIF_MSG_RX_STATUS, - "fp->last_max_sge = %d fp->rx_sge_prod = %d\n", - fp->last_max_sge, fp->rx_sge_prod); -} - -static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue, - struct sk_buff *skb, u16 cons, u16 prod) -{ - struct bnx2x *bp = fp->bp; - struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons]; - struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod]; - struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod]; - dma_addr_t mapping; - - /* move empty skb from pool to prod and map it */ - prod_rx_buf->skb = fp->tpa_pool[queue].skb; - mapping = dma_map_single(&bp->pdev->dev, fp->tpa_pool[queue].skb->data, - fp->rx_buf_size, DMA_FROM_DEVICE); - dma_unmap_addr_set(prod_rx_buf, mapping, mapping); - - /* move partial skb from cons to pool (don't unmap yet) */ - fp->tpa_pool[queue] = *cons_rx_buf; - - /* mark bin state as start - print error if current state != stop */ - if (fp->tpa_state[queue] != BNX2X_TPA_STOP) - BNX2X_ERR("start of bin not in stop [%d]\n", queue); - - fp->tpa_state[queue] = BNX2X_TPA_START; - - /* point prod_bd to new skb */ - prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); - prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); - -#ifdef BNX2X_STOP_ON_ERROR - fp->tpa_queue_used |= (1 << queue); -#ifdef _ASM_GENERIC_INT_L64_H - DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%lx\n", -#else - DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n", -#endif - fp->tpa_queue_used); -#endif -} - -/* Timestamp option length allowed for TPA aggregation: - * - * nop nop kind length echo val - */ -#define TPA_TSTAMP_OPT_LEN 12 -/** - * bnx2x_set_lro_mss - calculate the approximate value of the MSS - * - * @bp: driver handle - * @parsing_flags: parsing flags from the START CQE - * @len_on_bd: total length of the first packet for the - * aggregation. - * - * Approximate value of the MSS for this aggregation calculated using - * the first packet of it. - */ -static inline u16 bnx2x_set_lro_mss(struct bnx2x *bp, u16 parsing_flags, - u16 len_on_bd) -{ - /* TPA arrgregation won't have an IP options and TCP options - * other than timestamp. - */ - u16 hdrs_len = ETH_HLEN + sizeof(struct iphdr) + sizeof(struct tcphdr); - - - /* Check if there was a TCP timestamp, if there is it's will - * always be 12 bytes length: nop nop kind length echo val. - * - * Otherwise FW would close the aggregation. - */ - if (parsing_flags & PARSING_FLAGS_TIME_STAMP_EXIST_FLAG) - hdrs_len += TPA_TSTAMP_OPT_LEN; - - return len_on_bd - hdrs_len; -} - -static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp, - struct sk_buff *skb, - struct eth_fast_path_rx_cqe *fp_cqe, - u16 cqe_idx, u16 parsing_flags) -{ - struct sw_rx_page *rx_pg, old_rx_pg; - u16 len_on_bd = le16_to_cpu(fp_cqe->len_on_bd); - u32 i, frag_len, frag_size, pages; - int err; - int j; - - frag_size = le16_to_cpu(fp_cqe->pkt_len) - len_on_bd; - pages = SGE_PAGE_ALIGN(frag_size) >> SGE_PAGE_SHIFT; - - /* This is needed in order to enable forwarding support */ - if (frag_size) - skb_shinfo(skb)->gso_size = bnx2x_set_lro_mss(bp, parsing_flags, - len_on_bd); - -#ifdef BNX2X_STOP_ON_ERROR - if (pages > min_t(u32, 8, MAX_SKB_FRAGS)*SGE_PAGE_SIZE*PAGES_PER_SGE) { - BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n", - pages, cqe_idx); - BNX2X_ERR("fp_cqe->pkt_len = %d fp_cqe->len_on_bd = %d\n", - fp_cqe->pkt_len, len_on_bd); - bnx2x_panic(); - return -EINVAL; - } -#endif - - /* Run through the SGL and compose the fragmented skb */ - for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) { - u16 sge_idx = - RX_SGE(le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[j])); - - /* FW gives the indices of the SGE as if the ring is an array - (meaning that "next" element will consume 2 indices) */ - frag_len = min(frag_size, (u32)(SGE_PAGE_SIZE*PAGES_PER_SGE)); - rx_pg = &fp->rx_page_ring[sge_idx]; - old_rx_pg = *rx_pg; - - /* If we fail to allocate a substitute page, we simply stop - where we are and drop the whole packet */ - err = bnx2x_alloc_rx_sge(bp, fp, sge_idx); - if (unlikely(err)) { - fp->eth_q_stats.rx_skb_alloc_failed++; - return err; - } - - /* Unmap the page as we r going to pass it to the stack */ - dma_unmap_page(&bp->pdev->dev, - dma_unmap_addr(&old_rx_pg, mapping), - SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE); - - /* Add one frag and update the appropriate fields in the skb */ - skb_fill_page_desc(skb, j, old_rx_pg.page, 0, frag_len); - - skb->data_len += frag_len; - skb->truesize += frag_len; - skb->len += frag_len; - - frag_size -= frag_len; - } - - return 0; -} - -static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp, - u16 queue, int pad, int len, union eth_rx_cqe *cqe, - u16 cqe_idx) -{ - struct sw_rx_bd *rx_buf = &fp->tpa_pool[queue]; - struct sk_buff *skb = rx_buf->skb; - /* alloc new skb */ - struct sk_buff *new_skb = netdev_alloc_skb(bp->dev, fp->rx_buf_size); - - /* Unmap skb in the pool anyway, as we are going to change - pool entry status to BNX2X_TPA_STOP even if new skb allocation - fails. */ - dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping), - fp->rx_buf_size, DMA_FROM_DEVICE); - - if (likely(new_skb)) { - /* fix ip xsum and give it to the stack */ - /* (no need to map the new skb) */ - u16 parsing_flags = - le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags); - - prefetch(skb); - prefetch(((char *)(skb)) + L1_CACHE_BYTES); - -#ifdef BNX2X_STOP_ON_ERROR - if (pad + len > fp->rx_buf_size) { - BNX2X_ERR("skb_put is about to fail... " - "pad %d len %d rx_buf_size %d\n", - pad, len, fp->rx_buf_size); - bnx2x_panic(); - return; - } -#endif - - skb_reserve(skb, pad); - skb_put(skb, len); - - skb->protocol = eth_type_trans(skb, bp->dev); - skb->ip_summed = CHECKSUM_UNNECESSARY; - - { - struct iphdr *iph; - - iph = (struct iphdr *)skb->data; - iph->check = 0; - iph->check = ip_fast_csum((u8 *)iph, iph->ihl); - } - - if (!bnx2x_fill_frag_skb(bp, fp, skb, - &cqe->fast_path_cqe, cqe_idx, - parsing_flags)) { - if (parsing_flags & PARSING_FLAGS_VLAN) - __vlan_hwaccel_put_tag(skb, - le16_to_cpu(cqe->fast_path_cqe. - vlan_tag)); - napi_gro_receive(&fp->napi, skb); - } else { - DP(NETIF_MSG_RX_STATUS, "Failed to allocate new pages" - " - dropping packet!\n"); - dev_kfree_skb_any(skb); - } - - - /* put new skb in bin */ - fp->tpa_pool[queue].skb = new_skb; - - } else { - /* else drop the packet and keep the buffer in the bin */ - DP(NETIF_MSG_RX_STATUS, - "Failed to allocate new skb - dropping packet!\n"); - fp->eth_q_stats.rx_skb_alloc_failed++; - } - - fp->tpa_state[queue] = BNX2X_TPA_STOP; -} - -/* Set Toeplitz hash value in the skb using the value from the - * CQE (calculated by HW). - */ -static inline void bnx2x_set_skb_rxhash(struct bnx2x *bp, union eth_rx_cqe *cqe, - struct sk_buff *skb) -{ - /* Set Toeplitz hash from CQE */ - if ((bp->dev->features & NETIF_F_RXHASH) && - (cqe->fast_path_cqe.status_flags & - ETH_FAST_PATH_RX_CQE_RSS_HASH_FLG)) - skb->rxhash = - le32_to_cpu(cqe->fast_path_cqe.rss_hash_result); -} - -int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget) -{ - struct bnx2x *bp = fp->bp; - u16 bd_cons, bd_prod, bd_prod_fw, comp_ring_cons; - u16 hw_comp_cons, sw_comp_cons, sw_comp_prod; - int rx_pkt = 0; - -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) - return 0; -#endif - - /* CQ "next element" is of the size of the regular element, - that's why it's ok here */ - hw_comp_cons = le16_to_cpu(*fp->rx_cons_sb); - if ((hw_comp_cons & MAX_RCQ_DESC_CNT) == MAX_RCQ_DESC_CNT) - hw_comp_cons++; - - bd_cons = fp->rx_bd_cons; - bd_prod = fp->rx_bd_prod; - bd_prod_fw = bd_prod; - sw_comp_cons = fp->rx_comp_cons; - sw_comp_prod = fp->rx_comp_prod; - - /* Memory barrier necessary as speculative reads of the rx - * buffer can be ahead of the index in the status block - */ - rmb(); - - DP(NETIF_MSG_RX_STATUS, - "queue[%d]: hw_comp_cons %u sw_comp_cons %u\n", - fp->index, hw_comp_cons, sw_comp_cons); - - while (sw_comp_cons != hw_comp_cons) { - struct sw_rx_bd *rx_buf = NULL; - struct sk_buff *skb; - union eth_rx_cqe *cqe; - u8 cqe_fp_flags; - u16 len, pad; - - comp_ring_cons = RCQ_BD(sw_comp_cons); - bd_prod = RX_BD(bd_prod); - bd_cons = RX_BD(bd_cons); - - /* Prefetch the page containing the BD descriptor - at producer's index. It will be needed when new skb is - allocated */ - prefetch((void *)(PAGE_ALIGN((unsigned long) - (&fp->rx_desc_ring[bd_prod])) - - PAGE_SIZE + 1)); - - cqe = &fp->rx_comp_ring[comp_ring_cons]; - cqe_fp_flags = cqe->fast_path_cqe.type_error_flags; - - DP(NETIF_MSG_RX_STATUS, "CQE type %x err %x status %x" - " queue %x vlan %x len %u\n", CQE_TYPE(cqe_fp_flags), - cqe_fp_flags, cqe->fast_path_cqe.status_flags, - le32_to_cpu(cqe->fast_path_cqe.rss_hash_result), - le16_to_cpu(cqe->fast_path_cqe.vlan_tag), - le16_to_cpu(cqe->fast_path_cqe.pkt_len)); - - /* is this a slowpath msg? */ - if (unlikely(CQE_TYPE(cqe_fp_flags))) { - bnx2x_sp_event(fp, cqe); - goto next_cqe; - - /* this is an rx packet */ - } else { - rx_buf = &fp->rx_buf_ring[bd_cons]; - skb = rx_buf->skb; - prefetch(skb); - len = le16_to_cpu(cqe->fast_path_cqe.pkt_len); - pad = cqe->fast_path_cqe.placement_offset; - - /* - If CQE is marked both TPA_START and TPA_END it is - * a non-TPA CQE. - * - FP CQE will always have either TPA_START or/and - * TPA_STOP flags set. - */ - if ((!fp->disable_tpa) && - (TPA_TYPE(cqe_fp_flags) != - (TPA_TYPE_START | TPA_TYPE_END))) { - u16 queue = cqe->fast_path_cqe.queue_index; - - if (TPA_TYPE(cqe_fp_flags) == TPA_TYPE_START) { - DP(NETIF_MSG_RX_STATUS, - "calling tpa_start on queue %d\n", - queue); - - bnx2x_tpa_start(fp, queue, skb, - bd_cons, bd_prod); - - /* Set Toeplitz hash for an LRO skb */ - bnx2x_set_skb_rxhash(bp, cqe, skb); - - goto next_rx; - } else { /* TPA_STOP */ - DP(NETIF_MSG_RX_STATUS, - "calling tpa_stop on queue %d\n", - queue); - - if (!BNX2X_RX_SUM_FIX(cqe)) - BNX2X_ERR("STOP on none TCP " - "data\n"); - - /* This is a size of the linear data - on this skb */ - len = le16_to_cpu(cqe->fast_path_cqe. - len_on_bd); - bnx2x_tpa_stop(bp, fp, queue, pad, - len, cqe, comp_ring_cons); -#ifdef BNX2X_STOP_ON_ERROR - if (bp->panic) - return 0; -#endif - - bnx2x_update_sge_prod(fp, - &cqe->fast_path_cqe); - goto next_cqe; - } - } - - dma_sync_single_for_device(&bp->pdev->dev, - dma_unmap_addr(rx_buf, mapping), - pad + RX_COPY_THRESH, - DMA_FROM_DEVICE); - prefetch(((char *)(skb)) + L1_CACHE_BYTES); - - /* is this an error packet? */ - if (unlikely(cqe_fp_flags & ETH_RX_ERROR_FALGS)) { - DP(NETIF_MSG_RX_ERR, - "ERROR flags %x rx packet %u\n", - cqe_fp_flags, sw_comp_cons); - fp->eth_q_stats.rx_err_discard_pkt++; - goto reuse_rx; - } - - /* Since we don't have a jumbo ring - * copy small packets if mtu > 1500 - */ - if ((bp->dev->mtu > ETH_MAX_PACKET_SIZE) && - (len <= RX_COPY_THRESH)) { - struct sk_buff *new_skb; - - new_skb = netdev_alloc_skb(bp->dev, - len + pad); - if (new_skb == NULL) { - DP(NETIF_MSG_RX_ERR, - "ERROR packet dropped " - "because of alloc failure\n"); - fp->eth_q_stats.rx_skb_alloc_failed++; - goto reuse_rx; - } - - /* aligned copy */ - skb_copy_from_linear_data_offset(skb, pad, - new_skb->data + pad, len); - skb_reserve(new_skb, pad); - skb_put(new_skb, len); - - bnx2x_reuse_rx_skb(fp, bd_cons, bd_prod); - - skb = new_skb; - - } else - if (likely(bnx2x_alloc_rx_skb(bp, fp, bd_prod) == 0)) { - dma_unmap_single(&bp->pdev->dev, - dma_unmap_addr(rx_buf, mapping), - fp->rx_buf_size, - DMA_FROM_DEVICE); - skb_reserve(skb, pad); - skb_put(skb, len); - - } else { - DP(NETIF_MSG_RX_ERR, - "ERROR packet dropped because " - "of alloc failure\n"); - fp->eth_q_stats.rx_skb_alloc_failed++; -reuse_rx: - bnx2x_reuse_rx_skb(fp, bd_cons, bd_prod); - goto next_rx; - } - - skb->protocol = eth_type_trans(skb, bp->dev); - - /* Set Toeplitz hash for a none-LRO skb */ - bnx2x_set_skb_rxhash(bp, cqe, skb); - - skb_checksum_none_assert(skb); - - if (bp->dev->features & NETIF_F_RXCSUM) { - if (likely(BNX2X_RX_CSUM_OK(cqe))) - skb->ip_summed = CHECKSUM_UNNECESSARY; - else - fp->eth_q_stats.hw_csum_err++; - } - } - - skb_record_rx_queue(skb, fp->index); - - if (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) & - PARSING_FLAGS_VLAN) - __vlan_hwaccel_put_tag(skb, - le16_to_cpu(cqe->fast_path_cqe.vlan_tag)); - napi_gro_receive(&fp->napi, skb); - - -next_rx: - rx_buf->skb = NULL; - - bd_cons = NEXT_RX_IDX(bd_cons); - bd_prod = NEXT_RX_IDX(bd_prod); - bd_prod_fw = NEXT_RX_IDX(bd_prod_fw); - rx_pkt++; -next_cqe: - sw_comp_prod = NEXT_RCQ_IDX(sw_comp_prod); - sw_comp_cons = NEXT_RCQ_IDX(sw_comp_cons); - - if (rx_pkt == budget) - break; - } /* while */ - - fp->rx_bd_cons = bd_cons; - fp->rx_bd_prod = bd_prod_fw; - fp->rx_comp_cons = sw_comp_cons; - fp->rx_comp_prod = sw_comp_prod; - - /* Update producers */ - bnx2x_update_rx_prod(bp, fp, bd_prod_fw, sw_comp_prod, - fp->rx_sge_prod); - - fp->rx_pkt += rx_pkt; - fp->rx_calls++; - - return rx_pkt; -} - -static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie) -{ - struct bnx2x_fastpath *fp = fp_cookie; - struct bnx2x *bp = fp->bp; - - /* Return here if interrupt is disabled */ - if (unlikely(atomic_read(&bp->intr_sem) != 0)) { - DP(NETIF_MSG_INTR, "called but intr_sem not 0, returning\n"); - return IRQ_HANDLED; - } - - DP(BNX2X_MSG_FP, "got an MSI-X interrupt on IDX:SB " - "[fp %d fw_sd %d igusb %d]\n", - fp->index, fp->fw_sb_id, fp->igu_sb_id); - bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, 0, IGU_INT_DISABLE, 0); - -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) - return IRQ_HANDLED; -#endif - - /* Handle Rx and Tx according to MSI-X vector */ - prefetch(fp->rx_cons_sb); - prefetch(fp->tx_cons_sb); - prefetch(&fp->sb_running_index[SM_RX_ID]); - napi_schedule(&bnx2x_fp(bp, fp->index, napi)); - - return IRQ_HANDLED; -} - -/* HW Lock for shared dual port PHYs */ -void bnx2x_acquire_phy_lock(struct bnx2x *bp) -{ - mutex_lock(&bp->port.phy_mutex); - - if (bp->port.need_hw_lock) - bnx2x_acquire_hw_lock(bp, HW_LOCK_RESOURCE_MDIO); -} - -void bnx2x_release_phy_lock(struct bnx2x *bp) -{ - if (bp->port.need_hw_lock) - bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_MDIO); - - mutex_unlock(&bp->port.phy_mutex); -} - -/* calculates MF speed according to current linespeed and MF configuration */ -u16 bnx2x_get_mf_speed(struct bnx2x *bp) -{ - u16 line_speed = bp->link_vars.line_speed; - if (IS_MF(bp)) { - u16 maxCfg = bnx2x_extract_max_cfg(bp, - bp->mf_config[BP_VN(bp)]); - - /* Calculate the current MAX line speed limit for the MF - * devices - */ - if (IS_MF_SI(bp)) - line_speed = (line_speed * maxCfg) / 100; - else { /* SD mode */ - u16 vn_max_rate = maxCfg * 100; - - if (vn_max_rate < line_speed) - line_speed = vn_max_rate; - } - } - - return line_speed; -} - -/** - * bnx2x_fill_report_data - fill link report data to report - * - * @bp: driver handle - * @data: link state to update - * - * It uses a none-atomic bit operations because is called under the mutex. - */ -static inline void bnx2x_fill_report_data(struct bnx2x *bp, - struct bnx2x_link_report_data *data) -{ - u16 line_speed = bnx2x_get_mf_speed(bp); - - memset(data, 0, sizeof(*data)); - - /* Fill the report data: efective line speed */ - data->line_speed = line_speed; - - /* Link is down */ - if (!bp->link_vars.link_up || (bp->flags & MF_FUNC_DIS)) - __set_bit(BNX2X_LINK_REPORT_LINK_DOWN, - &data->link_report_flags); - - /* Full DUPLEX */ - if (bp->link_vars.duplex == DUPLEX_FULL) - __set_bit(BNX2X_LINK_REPORT_FD, &data->link_report_flags); - - /* Rx Flow Control is ON */ - if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_RX) - __set_bit(BNX2X_LINK_REPORT_RX_FC_ON, &data->link_report_flags); - - /* Tx Flow Control is ON */ - if (bp->link_vars.flow_ctrl & BNX2X_FLOW_CTRL_TX) - __set_bit(BNX2X_LINK_REPORT_TX_FC_ON, &data->link_report_flags); -} - -/** - * bnx2x_link_report - report link status to OS. - * - * @bp: driver handle - * - * Calls the __bnx2x_link_report() under the same locking scheme - * as a link/PHY state managing code to ensure a consistent link - * reporting. - */ - -void bnx2x_link_report(struct bnx2x *bp) -{ - bnx2x_acquire_phy_lock(bp); - __bnx2x_link_report(bp); - bnx2x_release_phy_lock(bp); -} - -/** - * __bnx2x_link_report - report link status to OS. - * - * @bp: driver handle - * - * None atomic inmlementation. - * Should be called under the phy_lock. - */ -void __bnx2x_link_report(struct bnx2x *bp) -{ - struct bnx2x_link_report_data cur_data; - - /* reread mf_cfg */ - if (!CHIP_IS_E1(bp)) - bnx2x_read_mf_cfg(bp); - - /* Read the current link report info */ - bnx2x_fill_report_data(bp, &cur_data); - - /* Don't report link down or exactly the same link status twice */ - if (!memcmp(&cur_data, &bp->last_reported_link, sizeof(cur_data)) || - (test_bit(BNX2X_LINK_REPORT_LINK_DOWN, - &bp->last_reported_link.link_report_flags) && - test_bit(BNX2X_LINK_REPORT_LINK_DOWN, - &cur_data.link_report_flags))) - return; - - bp->link_cnt++; - - /* We are going to report a new link parameters now - - * remember the current data for the next time. - */ - memcpy(&bp->last_reported_link, &cur_data, sizeof(cur_data)); - - if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN, - &cur_data.link_report_flags)) { - netif_carrier_off(bp->dev); - netdev_err(bp->dev, "NIC Link is Down\n"); - return; - } else { - netif_carrier_on(bp->dev); - netdev_info(bp->dev, "NIC Link is Up, "); - pr_cont("%d Mbps ", cur_data.line_speed); - - if (test_and_clear_bit(BNX2X_LINK_REPORT_FD, - &cur_data.link_report_flags)) - pr_cont("full duplex"); - else - pr_cont("half duplex"); - - /* Handle the FC at the end so that only these flags would be - * possibly set. This way we may easily check if there is no FC - * enabled. - */ - if (cur_data.link_report_flags) { - if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON, - &cur_data.link_report_flags)) { - pr_cont(", receive "); - if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON, - &cur_data.link_report_flags)) - pr_cont("& transmit "); - } else { - pr_cont(", transmit "); - } - pr_cont("flow control ON"); - } - pr_cont("\n"); - } -} - -void bnx2x_init_rx_rings(struct bnx2x *bp) -{ - int func = BP_FUNC(bp); - int max_agg_queues = CHIP_IS_E1(bp) ? ETH_MAX_AGGREGATION_QUEUES_E1 : - ETH_MAX_AGGREGATION_QUEUES_E1H; - u16 ring_prod; - int i, j; - - /* Allocate TPA resources */ - for_each_rx_queue(bp, j) { - struct bnx2x_fastpath *fp = &bp->fp[j]; - - DP(NETIF_MSG_IFUP, - "mtu %d rx_buf_size %d\n", bp->dev->mtu, fp->rx_buf_size); - - if (!fp->disable_tpa) { - /* Fill the per-aggregation pool */ - for (i = 0; i < max_agg_queues; i++) { - fp->tpa_pool[i].skb = - netdev_alloc_skb(bp->dev, fp->rx_buf_size); - if (!fp->tpa_pool[i].skb) { - BNX2X_ERR("Failed to allocate TPA " - "skb pool for queue[%d] - " - "disabling TPA on this " - "queue!\n", j); - bnx2x_free_tpa_pool(bp, fp, i); - fp->disable_tpa = 1; - break; - } - dma_unmap_addr_set((struct sw_rx_bd *) - &bp->fp->tpa_pool[i], - mapping, 0); - fp->tpa_state[i] = BNX2X_TPA_STOP; - } - - /* "next page" elements initialization */ - bnx2x_set_next_page_sgl(fp); - - /* set SGEs bit mask */ - bnx2x_init_sge_ring_bit_mask(fp); - - /* Allocate SGEs and initialize the ring elements */ - for (i = 0, ring_prod = 0; - i < MAX_RX_SGE_CNT*NUM_RX_SGE_PAGES; i++) { - - if (bnx2x_alloc_rx_sge(bp, fp, ring_prod) < 0) { - BNX2X_ERR("was only able to allocate " - "%d rx sges\n", i); - BNX2X_ERR("disabling TPA for" - " queue[%d]\n", j); - /* Cleanup already allocated elements */ - bnx2x_free_rx_sge_range(bp, - fp, ring_prod); - bnx2x_free_tpa_pool(bp, - fp, max_agg_queues); - fp->disable_tpa = 1; - ring_prod = 0; - break; - } - ring_prod = NEXT_SGE_IDX(ring_prod); - } - - fp->rx_sge_prod = ring_prod; - } - } - - for_each_rx_queue(bp, j) { - struct bnx2x_fastpath *fp = &bp->fp[j]; - - fp->rx_bd_cons = 0; - - /* Activate BD ring */ - /* Warning! - * this will generate an interrupt (to the TSTORM) - * must only be done after chip is initialized - */ - bnx2x_update_rx_prod(bp, fp, fp->rx_bd_prod, fp->rx_comp_prod, - fp->rx_sge_prod); - - if (j != 0) - continue; - - if (!CHIP_IS_E2(bp)) { - REG_WR(bp, BAR_USTRORM_INTMEM + - USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func), - U64_LO(fp->rx_comp_mapping)); - REG_WR(bp, BAR_USTRORM_INTMEM + - USTORM_MEM_WORKAROUND_ADDRESS_OFFSET(func) + 4, - U64_HI(fp->rx_comp_mapping)); - } - } -} - -static void bnx2x_free_tx_skbs(struct bnx2x *bp) -{ - int i; - - for_each_tx_queue(bp, i) { - struct bnx2x_fastpath *fp = &bp->fp[i]; - - u16 bd_cons = fp->tx_bd_cons; - u16 sw_prod = fp->tx_pkt_prod; - u16 sw_cons = fp->tx_pkt_cons; - - while (sw_cons != sw_prod) { - bd_cons = bnx2x_free_tx_pkt(bp, fp, TX_BD(sw_cons)); - sw_cons++; - } - } -} - -static void bnx2x_free_rx_bds(struct bnx2x_fastpath *fp) -{ - struct bnx2x *bp = fp->bp; - int i; - - /* ring wasn't allocated */ - if (fp->rx_buf_ring == NULL) - return; - - for (i = 0; i < NUM_RX_BD; i++) { - struct sw_rx_bd *rx_buf = &fp->rx_buf_ring[i]; - struct sk_buff *skb = rx_buf->skb; - - if (skb == NULL) - continue; - - dma_unmap_single(&bp->pdev->dev, - dma_unmap_addr(rx_buf, mapping), - fp->rx_buf_size, DMA_FROM_DEVICE); - - rx_buf->skb = NULL; - dev_kfree_skb(skb); - } -} - -static void bnx2x_free_rx_skbs(struct bnx2x *bp) -{ - int j; - - for_each_rx_queue(bp, j) { - struct bnx2x_fastpath *fp = &bp->fp[j]; - - bnx2x_free_rx_bds(fp); - - if (!fp->disable_tpa) - bnx2x_free_tpa_pool(bp, fp, CHIP_IS_E1(bp) ? - ETH_MAX_AGGREGATION_QUEUES_E1 : - ETH_MAX_AGGREGATION_QUEUES_E1H); - } -} - -void bnx2x_free_skbs(struct bnx2x *bp) -{ - bnx2x_free_tx_skbs(bp); - bnx2x_free_rx_skbs(bp); -} - -void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value) -{ - /* load old values */ - u32 mf_cfg = bp->mf_config[BP_VN(bp)]; - - if (value != bnx2x_extract_max_cfg(bp, mf_cfg)) { - /* leave all but MAX value */ - mf_cfg &= ~FUNC_MF_CFG_MAX_BW_MASK; - - /* set new MAX value */ - mf_cfg |= (value << FUNC_MF_CFG_MAX_BW_SHIFT) - & FUNC_MF_CFG_MAX_BW_MASK; - - bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, mf_cfg); - } -} - -static void bnx2x_free_msix_irqs(struct bnx2x *bp) -{ - int i, offset = 1; - - free_irq(bp->msix_table[0].vector, bp->dev); - DP(NETIF_MSG_IFDOWN, "released sp irq (%d)\n", - bp->msix_table[0].vector); - -#ifdef BCM_CNIC - offset++; -#endif - for_each_eth_queue(bp, i) { - DP(NETIF_MSG_IFDOWN, "about to release fp #%d->%d irq " - "state %x\n", i, bp->msix_table[i + offset].vector, - bnx2x_fp(bp, i, state)); - - free_irq(bp->msix_table[i + offset].vector, &bp->fp[i]); - } -} - -void bnx2x_free_irq(struct bnx2x *bp) -{ - if (bp->flags & USING_MSIX_FLAG) - bnx2x_free_msix_irqs(bp); - else if (bp->flags & USING_MSI_FLAG) - free_irq(bp->pdev->irq, bp->dev); - else - free_irq(bp->pdev->irq, bp->dev); -} - -int bnx2x_enable_msix(struct bnx2x *bp) -{ - int msix_vec = 0, i, rc, req_cnt; - - bp->msix_table[msix_vec].entry = msix_vec; - DP(NETIF_MSG_IFUP, "msix_table[0].entry = %d (slowpath)\n", - bp->msix_table[0].entry); - msix_vec++; - -#ifdef BCM_CNIC - bp->msix_table[msix_vec].entry = msix_vec; - DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d (CNIC)\n", - bp->msix_table[msix_vec].entry, bp->msix_table[msix_vec].entry); - msix_vec++; -#endif - for_each_eth_queue(bp, i) { - bp->msix_table[msix_vec].entry = msix_vec; - DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d " - "(fastpath #%u)\n", msix_vec, msix_vec, i); - msix_vec++; - } - - req_cnt = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_CONTEXT_USE + 1; - - rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], req_cnt); - - /* - * reconfigure number of tx/rx queues according to available - * MSI-X vectors - */ - if (rc >= BNX2X_MIN_MSIX_VEC_CNT) { - /* how less vectors we will have? */ - int diff = req_cnt - rc; - - DP(NETIF_MSG_IFUP, - "Trying to use less MSI-X vectors: %d\n", rc); - - rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], rc); - - if (rc) { - DP(NETIF_MSG_IFUP, - "MSI-X is not attainable rc %d\n", rc); - return rc; - } - /* - * decrease number of queues by number of unallocated entries - */ - bp->num_queues -= diff; - - DP(NETIF_MSG_IFUP, "New queue configuration set: %d\n", - bp->num_queues); - } else if (rc) { - /* fall to INTx if not enough memory */ - if (rc == -ENOMEM) - bp->flags |= DISABLE_MSI_FLAG; - DP(NETIF_MSG_IFUP, "MSI-X is not attainable rc %d\n", rc); - return rc; - } - - bp->flags |= USING_MSIX_FLAG; - - return 0; -} - -static int bnx2x_req_msix_irqs(struct bnx2x *bp) -{ - int i, rc, offset = 1; - - rc = request_irq(bp->msix_table[0].vector, bnx2x_msix_sp_int, 0, - bp->dev->name, bp->dev); - if (rc) { - BNX2X_ERR("request sp irq failed\n"); - return -EBUSY; - } - -#ifdef BCM_CNIC - offset++; -#endif - for_each_eth_queue(bp, i) { - struct bnx2x_fastpath *fp = &bp->fp[i]; - snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", - bp->dev->name, i); - - rc = request_irq(bp->msix_table[offset].vector, - bnx2x_msix_fp_int, 0, fp->name, fp); - if (rc) { - BNX2X_ERR("request fp #%d irq failed rc %d\n", i, rc); - bnx2x_free_msix_irqs(bp); - return -EBUSY; - } - - offset++; - fp->state = BNX2X_FP_STATE_IRQ; - } - - i = BNX2X_NUM_ETH_QUEUES(bp); - offset = 1 + CNIC_CONTEXT_USE; - netdev_info(bp->dev, "using MSI-X IRQs: sp %d fp[%d] %d" - " ... fp[%d] %d\n", - bp->msix_table[0].vector, - 0, bp->msix_table[offset].vector, - i - 1, bp->msix_table[offset + i - 1].vector); - - return 0; -} - -int bnx2x_enable_msi(struct bnx2x *bp) -{ - int rc; - - rc = pci_enable_msi(bp->pdev); - if (rc) { - DP(NETIF_MSG_IFUP, "MSI is not attainable\n"); - return -1; - } - bp->flags |= USING_MSI_FLAG; - - return 0; -} - -static int bnx2x_req_irq(struct bnx2x *bp) -{ - unsigned long flags; - int rc; - - if (bp->flags & USING_MSI_FLAG) - flags = 0; - else - flags = IRQF_SHARED; - - rc = request_irq(bp->pdev->irq, bnx2x_interrupt, flags, - bp->dev->name, bp->dev); - if (!rc) - bnx2x_fp(bp, 0, state) = BNX2X_FP_STATE_IRQ; - - return rc; -} - -static void bnx2x_napi_enable(struct bnx2x *bp) -{ - int i; - - for_each_napi_queue(bp, i) - napi_enable(&bnx2x_fp(bp, i, napi)); -} - -static void bnx2x_napi_disable(struct bnx2x *bp) -{ - int i; - - for_each_napi_queue(bp, i) - napi_disable(&bnx2x_fp(bp, i, napi)); -} - -void bnx2x_netif_start(struct bnx2x *bp) -{ - int intr_sem; - - intr_sem = atomic_dec_and_test(&bp->intr_sem); - smp_wmb(); /* Ensure that bp->intr_sem update is SMP-safe */ - - if (intr_sem) { - if (netif_running(bp->dev)) { - bnx2x_napi_enable(bp); - bnx2x_int_enable(bp); - if (bp->state == BNX2X_STATE_OPEN) - netif_tx_wake_all_queues(bp->dev); - } - } -} - -void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw) -{ - bnx2x_int_disable_sync(bp, disable_hw); - bnx2x_napi_disable(bp); - netif_tx_disable(bp->dev); -} - -u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb) -{ -#ifdef BCM_CNIC - struct bnx2x *bp = netdev_priv(dev); - if (NO_FCOE(bp)) - return skb_tx_hash(dev, skb); - else { - struct ethhdr *hdr = (struct ethhdr *)skb->data; - u16 ether_type = ntohs(hdr->h_proto); - - /* Skip VLAN tag if present */ - if (ether_type == ETH_P_8021Q) { - struct vlan_ethhdr *vhdr = - (struct vlan_ethhdr *)skb->data; - - ether_type = ntohs(vhdr->h_vlan_encapsulated_proto); - } - - /* If ethertype is FCoE or FIP - use FCoE ring */ - if ((ether_type == ETH_P_FCOE) || (ether_type == ETH_P_FIP)) - return bnx2x_fcoe(bp, index); - } -#endif - /* Select a none-FCoE queue: if FCoE is enabled, exclude FCoE L2 ring - */ - return __skb_tx_hash(dev, skb, - dev->real_num_tx_queues - FCOE_CONTEXT_USE); -} - -void bnx2x_set_num_queues(struct bnx2x *bp) -{ - switch (bp->multi_mode) { - case ETH_RSS_MODE_DISABLED: - bp->num_queues = 1; - break; - case ETH_RSS_MODE_REGULAR: - bp->num_queues = bnx2x_calc_num_queues(bp); - break; - - default: - bp->num_queues = 1; - break; - } - - /* Add special queues */ - bp->num_queues += NONE_ETH_CONTEXT_USE; -} - -#ifdef BCM_CNIC -static inline void bnx2x_set_fcoe_eth_macs(struct bnx2x *bp) -{ - if (!NO_FCOE(bp)) { - if (!IS_MF_SD(bp)) - bnx2x_set_fip_eth_mac_addr(bp, 1); - bnx2x_set_all_enode_macs(bp, 1); - bp->flags |= FCOE_MACS_SET; - } -} -#endif - -static void bnx2x_release_firmware(struct bnx2x *bp) -{ - kfree(bp->init_ops_offsets); - kfree(bp->init_ops); - kfree(bp->init_data); - release_firmware(bp->firmware); -} - -static inline int bnx2x_set_real_num_queues(struct bnx2x *bp) -{ - int rc, num = bp->num_queues; - -#ifdef BCM_CNIC - if (NO_FCOE(bp)) - num -= FCOE_CONTEXT_USE; - -#endif - netif_set_real_num_tx_queues(bp->dev, num); - rc = netif_set_real_num_rx_queues(bp->dev, num); - return rc; -} - -static inline void bnx2x_set_rx_buf_size(struct bnx2x *bp) -{ - int i; - - for_each_queue(bp, i) { - struct bnx2x_fastpath *fp = &bp->fp[i]; - - /* Always use a mini-jumbo MTU for the FCoE L2 ring */ - if (IS_FCOE_IDX(i)) - /* - * Although there are no IP frames expected to arrive to - * this ring we still want to add an - * IP_HEADER_ALIGNMENT_PADDING to prevent a buffer - * overrun attack. - */ - fp->rx_buf_size = - BNX2X_FCOE_MINI_JUMBO_MTU + ETH_OVREHEAD + - BNX2X_RX_ALIGN + IP_HEADER_ALIGNMENT_PADDING; - else - fp->rx_buf_size = - bp->dev->mtu + ETH_OVREHEAD + BNX2X_RX_ALIGN + - IP_HEADER_ALIGNMENT_PADDING; - } -} - -/* must be called with rtnl_lock */ -int bnx2x_nic_load(struct bnx2x *bp, int load_mode) -{ - u32 load_code; - int i, rc; - - /* Set init arrays */ - rc = bnx2x_init_firmware(bp); - if (rc) { - BNX2X_ERR("Error loading firmware\n"); - return rc; - } - -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) - return -EPERM; -#endif - - bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD; - - /* Set the initial link reported state to link down */ - bnx2x_acquire_phy_lock(bp); - memset(&bp->last_reported_link, 0, sizeof(bp->last_reported_link)); - __set_bit(BNX2X_LINK_REPORT_LINK_DOWN, - &bp->last_reported_link.link_report_flags); - bnx2x_release_phy_lock(bp); - - /* must be called before memory allocation and HW init */ - bnx2x_ilt_set_info(bp); - - /* zero fastpath structures preserving invariants like napi which are - * allocated only once - */ - for_each_queue(bp, i) - bnx2x_bz_fp(bp, i); - - /* Set the receive queues buffer size */ - bnx2x_set_rx_buf_size(bp); - - for_each_queue(bp, i) - bnx2x_fp(bp, i, disable_tpa) = - ((bp->flags & TPA_ENABLE_FLAG) == 0); - -#ifdef BCM_CNIC - /* We don't want TPA on FCoE L2 ring */ - bnx2x_fcoe(bp, disable_tpa) = 1; -#endif - - if (bnx2x_alloc_mem(bp)) - return -ENOMEM; - - /* As long as bnx2x_alloc_mem() may possibly update - * bp->num_queues, bnx2x_set_real_num_queues() should always - * come after it. - */ - rc = bnx2x_set_real_num_queues(bp); - if (rc) { - BNX2X_ERR("Unable to set real_num_queues\n"); - goto load_error0; - } - - bnx2x_napi_enable(bp); - - /* Send LOAD_REQUEST command to MCP - Returns the type of LOAD command: - if it is the first port to be initialized - common blocks should be initialized, otherwise - not - */ - if (!BP_NOMCP(bp)) { - load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_REQ, 0); - if (!load_code) { - BNX2X_ERR("MCP response failure, aborting\n"); - rc = -EBUSY; - goto load_error1; - } - if (load_code == FW_MSG_CODE_DRV_LOAD_REFUSED) { - rc = -EBUSY; /* other port in diagnostic mode */ - goto load_error1; - } - - } else { - int path = BP_PATH(bp); - int port = BP_PORT(bp); - - DP(NETIF_MSG_IFUP, "NO MCP - load counts[%d] %d, %d, %d\n", - path, load_count[path][0], load_count[path][1], - load_count[path][2]); - load_count[path][0]++; - load_count[path][1 + port]++; - DP(NETIF_MSG_IFUP, "NO MCP - new load counts[%d] %d, %d, %d\n", - path, load_count[path][0], load_count[path][1], - load_count[path][2]); - if (load_count[path][0] == 1) - load_code = FW_MSG_CODE_DRV_LOAD_COMMON; - else if (load_count[path][1 + port] == 1) - load_code = FW_MSG_CODE_DRV_LOAD_PORT; - else - load_code = FW_MSG_CODE_DRV_LOAD_FUNCTION; - } - - if ((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) || - (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP) || - (load_code == FW_MSG_CODE_DRV_LOAD_PORT)) - bp->port.pmf = 1; - else - bp->port.pmf = 0; - DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf); - - /* Initialize HW */ - rc = bnx2x_init_hw(bp, load_code); - if (rc) { - BNX2X_ERR("HW init failed, aborting\n"); - bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0); - goto load_error2; - } - - /* Connect to IRQs */ - rc = bnx2x_setup_irqs(bp); - if (rc) { - bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0); - goto load_error2; - } - - /* Setup NIC internals and enable interrupts */ - bnx2x_nic_init(bp, load_code); - - if (((load_code == FW_MSG_CODE_DRV_LOAD_COMMON) || - (load_code == FW_MSG_CODE_DRV_LOAD_COMMON_CHIP)) && - (bp->common.shmem2_base)) - SHMEM2_WR(bp, dcc_support, - (SHMEM_DCC_SUPPORT_DISABLE_ENABLE_PF_TLV | - SHMEM_DCC_SUPPORT_BANDWIDTH_ALLOCATION_TLV)); - - /* Send LOAD_DONE command to MCP */ - if (!BP_NOMCP(bp)) { - load_code = bnx2x_fw_command(bp, DRV_MSG_CODE_LOAD_DONE, 0); - if (!load_code) { - BNX2X_ERR("MCP response failure, aborting\n"); - rc = -EBUSY; - goto load_error3; - } - } - - bnx2x_dcbx_init(bp); - - bp->state = BNX2X_STATE_OPENING_WAIT4_PORT; - - rc = bnx2x_func_start(bp); - if (rc) { - BNX2X_ERR("Function start failed!\n"); -#ifndef BNX2X_STOP_ON_ERROR - goto load_error3; -#else - bp->panic = 1; - return -EBUSY; -#endif - } - - rc = bnx2x_setup_client(bp, &bp->fp[0], 1 /* Leading */); - if (rc) { - BNX2X_ERR("Setup leading failed!\n"); -#ifndef BNX2X_STOP_ON_ERROR - goto load_error3; -#else - bp->panic = 1; - return -EBUSY; -#endif - } - - if (!CHIP_IS_E1(bp) && - (bp->mf_config[BP_VN(bp)] & FUNC_MF_CFG_FUNC_DISABLED)) { - DP(NETIF_MSG_IFUP, "mf_cfg function disabled\n"); - bp->flags |= MF_FUNC_DIS; - } - -#ifdef BCM_CNIC - /* Enable Timer scan */ - REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + BP_PORT(bp)*4, 1); -#endif - - for_each_nondefault_queue(bp, i) { - rc = bnx2x_setup_client(bp, &bp->fp[i], 0); - if (rc) -#ifdef BCM_CNIC - goto load_error4; -#else - goto load_error3; -#endif - } - - /* Now when Clients are configured we are ready to work */ - bp->state = BNX2X_STATE_OPEN; - -#ifdef BCM_CNIC - bnx2x_set_fcoe_eth_macs(bp); -#endif - - bnx2x_set_eth_mac(bp, 1); - - /* Clear MC configuration */ - if (CHIP_IS_E1(bp)) - bnx2x_invalidate_e1_mc_list(bp); - else - bnx2x_invalidate_e1h_mc_list(bp); - - /* Clear UC lists configuration */ - bnx2x_invalidate_uc_list(bp); - - if (bp->pending_max) { - bnx2x_update_max_mf_config(bp, bp->pending_max); - bp->pending_max = 0; - } - - if (bp->port.pmf) - bnx2x_initial_phy_init(bp, load_mode); - - /* Initialize Rx filtering */ - bnx2x_set_rx_mode(bp->dev); - - /* Start fast path */ - switch (load_mode) { - case LOAD_NORMAL: - /* Tx queue should be only reenabled */ - netif_tx_wake_all_queues(bp->dev); - /* Initialize the receive filter. */ - break; - - case LOAD_OPEN: - netif_tx_start_all_queues(bp->dev); - smp_mb__after_clear_bit(); - break; - - case LOAD_DIAG: - bp->state = BNX2X_STATE_DIAG; - break; - - default: - break; - } - - if (!bp->port.pmf) - bnx2x__link_status_update(bp); - - /* start the timer */ - mod_timer(&bp->timer, jiffies + bp->current_interval); - -#ifdef BCM_CNIC - bnx2x_setup_cnic_irq_info(bp); - if (bp->state == BNX2X_STATE_OPEN) - bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD); -#endif - bnx2x_inc_load_cnt(bp); - - bnx2x_release_firmware(bp); - - return 0; - -#ifdef BCM_CNIC -load_error4: - /* Disable Timer scan */ - REG_WR(bp, TM_REG_EN_LINEAR0_TIMER + BP_PORT(bp)*4, 0); -#endif -load_error3: - bnx2x_int_disable_sync(bp, 1); - - /* Free SKBs, SGEs, TPA pool and driver internals */ - bnx2x_free_skbs(bp); - for_each_rx_queue(bp, i) - bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); - - /* Release IRQs */ - bnx2x_free_irq(bp); -load_error2: - if (!BP_NOMCP(bp)) { - bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_REQ_WOL_MCP, 0); - bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE, 0); - } - - bp->port.pmf = 0; -load_error1: - bnx2x_napi_disable(bp); -load_error0: - bnx2x_free_mem(bp); - - bnx2x_release_firmware(bp); - - return rc; -} - -/* must be called with rtnl_lock */ -int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode) -{ - int i; - - if (bp->state == BNX2X_STATE_CLOSED) { - /* Interface has been removed - nothing to recover */ - bp->recovery_state = BNX2X_RECOVERY_DONE; - bp->is_leader = 0; - bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_RESERVED_08); - smp_wmb(); - - return -EINVAL; - } - -#ifdef BCM_CNIC - bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD); -#endif - bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT; - - /* Set "drop all" */ - bp->rx_mode = BNX2X_RX_MODE_NONE; - bnx2x_set_storm_rx_mode(bp); - - /* Stop Tx */ - bnx2x_tx_disable(bp); - - del_timer_sync(&bp->timer); - - SHMEM_WR(bp, func_mb[BP_FW_MB_IDX(bp)].drv_pulse_mb, - (DRV_PULSE_ALWAYS_ALIVE | bp->fw_drv_pulse_wr_seq)); - - bnx2x_stats_handle(bp, STATS_EVENT_STOP); - - /* Cleanup the chip if needed */ - if (unload_mode != UNLOAD_RECOVERY) - bnx2x_chip_cleanup(bp, unload_mode); - else { - /* Disable HW interrupts, NAPI and Tx */ - bnx2x_netif_stop(bp, 1); - - /* Release IRQs */ - bnx2x_free_irq(bp); - } - - bp->port.pmf = 0; - - /* Free SKBs, SGEs, TPA pool and driver internals */ - bnx2x_free_skbs(bp); - for_each_rx_queue(bp, i) - bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE); - - bnx2x_free_mem(bp); - - bp->state = BNX2X_STATE_CLOSED; - - /* The last driver must disable a "close the gate" if there is no - * parity attention or "process kill" pending. - */ - if ((!bnx2x_dec_load_cnt(bp)) && (!bnx2x_chk_parity_attn(bp)) && - bnx2x_reset_is_done(bp)) - bnx2x_disable_close_the_gate(bp); - - /* Reset MCP mail box sequence if there is on going recovery */ - if (unload_mode == UNLOAD_RECOVERY) - bp->fw_seq = 0; - - return 0; -} - -int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state) -{ - u16 pmcsr; - - /* If there is no power capability, silently succeed */ - if (!bp->pm_cap) { - DP(NETIF_MSG_HW, "No power capability. Breaking.\n"); - return 0; - } - - pci_read_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, &pmcsr); - - switch (state) { - case PCI_D0: - pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, - ((pmcsr & ~PCI_PM_CTRL_STATE_MASK) | - PCI_PM_CTRL_PME_STATUS)); - - if (pmcsr & PCI_PM_CTRL_STATE_MASK) - /* delay required during transition out of D3hot */ - msleep(20); - break; - - case PCI_D3hot: - /* If there are other clients above don't - shut down the power */ - if (atomic_read(&bp->pdev->enable_cnt) != 1) - return 0; - /* Don't shut down the power for emulation and FPGA */ - if (CHIP_REV_IS_SLOW(bp)) - return 0; - - pmcsr &= ~PCI_PM_CTRL_STATE_MASK; - pmcsr |= 3; - - if (bp->wol) - pmcsr |= PCI_PM_CTRL_PME_ENABLE; - - pci_write_config_word(bp->pdev, bp->pm_cap + PCI_PM_CTRL, - pmcsr); - - /* No more memory access after this point until - * device is brought back to D0. - */ - break; - - default: - return -EINVAL; - } - return 0; -} - -/* - * net_device service functions - */ -int bnx2x_poll(struct napi_struct *napi, int budget) -{ - int work_done = 0; - struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath, - napi); - struct bnx2x *bp = fp->bp; - - while (1) { -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) { - napi_complete(napi); - return 0; - } -#endif - - if (bnx2x_has_tx_work(fp)) - bnx2x_tx_int(fp); - - if (bnx2x_has_rx_work(fp)) { - work_done += bnx2x_rx_int(fp, budget - work_done); - - /* must not complete if we consumed full budget */ - if (work_done >= budget) - break; - } - - /* Fall out from the NAPI loop if needed */ - if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) { -#ifdef BCM_CNIC - /* No need to update SB for FCoE L2 ring as long as - * it's connected to the default SB and the SB - * has been updated when NAPI was scheduled. - */ - if (IS_FCOE_FP(fp)) { - napi_complete(napi); - break; - } -#endif - - bnx2x_update_fpsb_idx(fp); - /* bnx2x_has_rx_work() reads the status block, - * thus we need to ensure that status block indices - * have been actually read (bnx2x_update_fpsb_idx) - * prior to this check (bnx2x_has_rx_work) so that - * we won't write the "newer" value of the status block - * to IGU (if there was a DMA right after - * bnx2x_has_rx_work and if there is no rmb, the memory - * reading (bnx2x_update_fpsb_idx) may be postponed - * to right before bnx2x_ack_sb). In this case there - * will never be another interrupt until there is - * another update of the status block, while there - * is still unhandled work. - */ - rmb(); - - if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) { - napi_complete(napi); - /* Re-enable interrupts */ - DP(NETIF_MSG_HW, - "Update index to %d\n", fp->fp_hc_idx); - bnx2x_ack_sb(bp, fp->igu_sb_id, USTORM_ID, - le16_to_cpu(fp->fp_hc_idx), - IGU_INT_ENABLE, 1); - break; - } - } - } - - return work_done; -} - -/* we split the first BD into headers and data BDs - * to ease the pain of our fellow microcode engineers - * we use one mapping for both BDs - * So far this has only been observed to happen - * in Other Operating Systems(TM) - */ -static noinline u16 bnx2x_tx_split(struct bnx2x *bp, - struct bnx2x_fastpath *fp, - struct sw_tx_bd *tx_buf, - struct eth_tx_start_bd **tx_bd, u16 hlen, - u16 bd_prod, int nbd) -{ - struct eth_tx_start_bd *h_tx_bd = *tx_bd; - struct eth_tx_bd *d_tx_bd; - dma_addr_t mapping; - int old_len = le16_to_cpu(h_tx_bd->nbytes); - - /* first fix first BD */ - h_tx_bd->nbd = cpu_to_le16(nbd); - h_tx_bd->nbytes = cpu_to_le16(hlen); - - DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d " - "(%x:%x) nbd %d\n", h_tx_bd->nbytes, h_tx_bd->addr_hi, - h_tx_bd->addr_lo, h_tx_bd->nbd); - - /* now get a new data BD - * (after the pbd) and fill it */ - bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); - d_tx_bd = &fp->tx_desc_ring[bd_prod].reg_bd; - - mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi), - le32_to_cpu(h_tx_bd->addr_lo)) + hlen; - - d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); - d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); - d_tx_bd->nbytes = cpu_to_le16(old_len - hlen); - - /* this marks the BD as one that has no individual mapping */ - tx_buf->flags |= BNX2X_TSO_SPLIT_BD; - - DP(NETIF_MSG_TX_QUEUED, - "TSO split data size is %d (%x:%x)\n", - d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo); - - /* update tx_bd */ - *tx_bd = (struct eth_tx_start_bd *)d_tx_bd; - - return bd_prod; -} - -static inline u16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix) -{ - if (fix > 0) - csum = (u16) ~csum_fold(csum_sub(csum, - csum_partial(t_header - fix, fix, 0))); - - else if (fix < 0) - csum = (u16) ~csum_fold(csum_add(csum, - csum_partial(t_header, -fix, 0))); - - return swab16(csum); -} - -static inline u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb) -{ - u32 rc; - - if (skb->ip_summed != CHECKSUM_PARTIAL) - rc = XMIT_PLAIN; - - else { - if (vlan_get_protocol(skb) == htons(ETH_P_IPV6)) { - rc = XMIT_CSUM_V6; - if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) - rc |= XMIT_CSUM_TCP; - - } else { - rc = XMIT_CSUM_V4; - if (ip_hdr(skb)->protocol == IPPROTO_TCP) - rc |= XMIT_CSUM_TCP; - } - } - - if (skb_is_gso_v6(skb)) - rc |= XMIT_GSO_V6 | XMIT_CSUM_TCP | XMIT_CSUM_V6; - else if (skb_is_gso(skb)) - rc |= XMIT_GSO_V4 | XMIT_CSUM_V4 | XMIT_CSUM_TCP; - - return rc; -} - -#if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3) -/* check if packet requires linearization (packet is too fragmented) - no need to check fragmentation if page size > 8K (there will be no - violation to FW restrictions) */ -static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb, - u32 xmit_type) -{ - int to_copy = 0; - int hlen = 0; - int first_bd_sz = 0; - - /* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */ - if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - 3)) { - - if (xmit_type & XMIT_GSO) { - unsigned short lso_mss = skb_shinfo(skb)->gso_size; - /* Check if LSO packet needs to be copied: - 3 = 1 (for headers BD) + 2 (for PBD and last BD) */ - int wnd_size = MAX_FETCH_BD - 3; - /* Number of windows to check */ - int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size; - int wnd_idx = 0; - int frag_idx = 0; - u32 wnd_sum = 0; - - /* Headers length */ - hlen = (int)(skb_transport_header(skb) - skb->data) + - tcp_hdrlen(skb); - - /* Amount of data (w/o headers) on linear part of SKB*/ - first_bd_sz = skb_headlen(skb) - hlen; - - wnd_sum = first_bd_sz; - - /* Calculate the first sum - it's special */ - for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++) - wnd_sum += - skb_shinfo(skb)->frags[frag_idx].size; - - /* If there was data on linear skb data - check it */ - if (first_bd_sz > 0) { - if (unlikely(wnd_sum < lso_mss)) { - to_copy = 1; - goto exit_lbl; - } - - wnd_sum -= first_bd_sz; - } - - /* Others are easier: run through the frag list and - check all windows */ - for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) { - wnd_sum += - skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1].size; - - if (unlikely(wnd_sum < lso_mss)) { - to_copy = 1; - break; - } - wnd_sum -= - skb_shinfo(skb)->frags[wnd_idx].size; - } - } else { - /* in non-LSO too fragmented packet should always - be linearized */ - to_copy = 1; - } - } - -exit_lbl: - if (unlikely(to_copy)) - DP(NETIF_MSG_TX_QUEUED, - "Linearization IS REQUIRED for %s packet. " - "num_frags %d hlen %d first_bd_sz %d\n", - (xmit_type & XMIT_GSO) ? "LSO" : "non-LSO", - skb_shinfo(skb)->nr_frags, hlen, first_bd_sz); - - return to_copy; -} -#endif - -static inline void bnx2x_set_pbd_gso_e2(struct sk_buff *skb, u32 *parsing_data, - u32 xmit_type) -{ - *parsing_data |= (skb_shinfo(skb)->gso_size << - ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT) & - ETH_TX_PARSE_BD_E2_LSO_MSS; - if ((xmit_type & XMIT_GSO_V6) && - (ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6)) - *parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR; -} - -/** - * bnx2x_set_pbd_gso - update PBD in GSO case. - * - * @skb: packet skb - * @pbd: parse BD - * @xmit_type: xmit flags - */ -static inline void bnx2x_set_pbd_gso(struct sk_buff *skb, - struct eth_tx_parse_bd_e1x *pbd, - u32 xmit_type) -{ - pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size); - pbd->tcp_send_seq = swab32(tcp_hdr(skb)->seq); - pbd->tcp_flags = pbd_tcp_flags(skb); - - if (xmit_type & XMIT_GSO_V4) { - pbd->ip_id = swab16(ip_hdr(skb)->id); - pbd->tcp_pseudo_csum = - swab16(~csum_tcpudp_magic(ip_hdr(skb)->saddr, - ip_hdr(skb)->daddr, - 0, IPPROTO_TCP, 0)); - - } else - pbd->tcp_pseudo_csum = - swab16(~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, - &ipv6_hdr(skb)->daddr, - 0, IPPROTO_TCP, 0)); - - pbd->global_data |= ETH_TX_PARSE_BD_E1X_PSEUDO_CS_WITHOUT_LEN; -} - -/** - * bnx2x_set_pbd_csum_e2 - update PBD with checksum and return header length - * - * @bp: driver handle - * @skb: packet skb - * @parsing_data: data to be updated - * @xmit_type: xmit flags - * - * 57712 related - */ -static inline u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb, - u32 *parsing_data, u32 xmit_type) -{ - *parsing_data |= - ((((u8 *)skb_transport_header(skb) - skb->data) >> 1) << - ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W_SHIFT) & - ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W; - - if (xmit_type & XMIT_CSUM_TCP) { - *parsing_data |= ((tcp_hdrlen(skb) / 4) << - ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) & - ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW; - - return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data; - } else - /* We support checksum offload for TCP and UDP only. - * No need to pass the UDP header length - it's a constant. - */ - return skb_transport_header(skb) + - sizeof(struct udphdr) - skb->data; -} - -/** - * bnx2x_set_pbd_csum - update PBD with checksum and return header length - * - * @bp: driver handle - * @skb: packet skb - * @pbd: parse BD to be updated - * @xmit_type: xmit flags - */ -static inline u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb, - struct eth_tx_parse_bd_e1x *pbd, - u32 xmit_type) -{ - u8 hlen = (skb_network_header(skb) - skb->data) >> 1; - - /* for now NS flag is not used in Linux */ - pbd->global_data = - (hlen | ((skb->protocol == cpu_to_be16(ETH_P_8021Q)) << - ETH_TX_PARSE_BD_E1X_LLC_SNAP_EN_SHIFT)); - - pbd->ip_hlen_w = (skb_transport_header(skb) - - skb_network_header(skb)) >> 1; - - hlen += pbd->ip_hlen_w; - - /* We support checksum offload for TCP and UDP only */ - if (xmit_type & XMIT_CSUM_TCP) - hlen += tcp_hdrlen(skb) / 2; - else - hlen += sizeof(struct udphdr) / 2; - - pbd->total_hlen_w = cpu_to_le16(hlen); - hlen = hlen*2; - - if (xmit_type & XMIT_CSUM_TCP) { - pbd->tcp_pseudo_csum = swab16(tcp_hdr(skb)->check); - - } else { - s8 fix = SKB_CS_OFF(skb); /* signed! */ - - DP(NETIF_MSG_TX_QUEUED, - "hlen %d fix %d csum before fix %x\n", - le16_to_cpu(pbd->total_hlen_w), fix, SKB_CS(skb)); - - /* HW bug: fixup the CSUM */ - pbd->tcp_pseudo_csum = - bnx2x_csum_fix(skb_transport_header(skb), - SKB_CS(skb), fix); - - DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n", - pbd->tcp_pseudo_csum); - } - - return hlen; -} - -/* called with netif_tx_lock - * bnx2x_tx_int() runs without netif_tx_lock unless it needs to call - * netif_wake_queue() - */ -netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct bnx2x *bp = netdev_priv(dev); - struct bnx2x_fastpath *fp; - struct netdev_queue *txq; - struct sw_tx_bd *tx_buf; - struct eth_tx_start_bd *tx_start_bd; - struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL; - struct eth_tx_parse_bd_e1x *pbd_e1x = NULL; - struct eth_tx_parse_bd_e2 *pbd_e2 = NULL; - u32 pbd_e2_parsing_data = 0; - u16 pkt_prod, bd_prod; - int nbd, fp_index; - dma_addr_t mapping; - u32 xmit_type = bnx2x_xmit_type(bp, skb); - int i; - u8 hlen = 0; - __le16 pkt_size = 0; - struct ethhdr *eth; - u8 mac_type = UNICAST_ADDRESS; - -#ifdef BNX2X_STOP_ON_ERROR - if (unlikely(bp->panic)) - return NETDEV_TX_BUSY; -#endif - - fp_index = skb_get_queue_mapping(skb); - txq = netdev_get_tx_queue(dev, fp_index); - - fp = &bp->fp[fp_index]; - - if (unlikely(bnx2x_tx_avail(fp) < (skb_shinfo(skb)->nr_frags + 3))) { - fp->eth_q_stats.driver_xoff++; - netif_tx_stop_queue(txq); - BNX2X_ERR("BUG! Tx ring full when queue awake!\n"); - return NETDEV_TX_BUSY; - } - - DP(NETIF_MSG_TX_QUEUED, "queue[%d]: SKB: summed %x protocol %x " - "protocol(%x,%x) gso type %x xmit_type %x\n", - fp_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr, - ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type); - - eth = (struct ethhdr *)skb->data; - - /* set flag according to packet type (UNICAST_ADDRESS is default)*/ - if (unlikely(is_multicast_ether_addr(eth->h_dest))) { - if (is_broadcast_ether_addr(eth->h_dest)) - mac_type = BROADCAST_ADDRESS; - else - mac_type = MULTICAST_ADDRESS; - } - -#if (MAX_SKB_FRAGS >= MAX_FETCH_BD - 3) - /* First, check if we need to linearize the skb (due to FW - restrictions). No need to check fragmentation if page size > 8K - (there will be no violation to FW restrictions) */ - if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) { - /* Statistics of linearization */ - bp->lin_cnt++; - if (skb_linearize(skb) != 0) { - DP(NETIF_MSG_TX_QUEUED, "SKB linearization failed - " - "silently dropping this SKB\n"); - dev_kfree_skb_any(skb); - return NETDEV_TX_OK; - } - } -#endif - - /* - Please read carefully. First we use one BD which we mark as start, - then we have a parsing info BD (used for TSO or xsum), - and only then we have the rest of the TSO BDs. - (don't forget to mark the last one as last, - and to unmap only AFTER you write to the BD ...) - And above all, all pdb sizes are in words - NOT DWORDS! - */ - - pkt_prod = fp->tx_pkt_prod++; - bd_prod = TX_BD(fp->tx_bd_prod); - - /* get a tx_buf and first BD */ - tx_buf = &fp->tx_buf_ring[TX_BD(pkt_prod)]; - tx_start_bd = &fp->tx_desc_ring[bd_prod].start_bd; - - tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD; - SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_ETH_ADDR_TYPE, - mac_type); - - /* header nbd */ - SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_HDR_NBDS, 1); - - /* remember the first BD of the packet */ - tx_buf->first_bd = fp->tx_bd_prod; - tx_buf->skb = skb; - tx_buf->flags = 0; - - DP(NETIF_MSG_TX_QUEUED, - "sending pkt %u @%p next_idx %u bd %u @%p\n", - pkt_prod, tx_buf, fp->tx_pkt_prod, bd_prod, tx_start_bd); - - if (vlan_tx_tag_present(skb)) { - tx_start_bd->vlan_or_ethertype = - cpu_to_le16(vlan_tx_tag_get(skb)); - tx_start_bd->bd_flags.as_bitfield |= - (X_ETH_OUTBAND_VLAN << ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT); - } else - tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod); - - /* turn on parsing and get a BD */ - bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); - - if (xmit_type & XMIT_CSUM) { - tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_L4_CSUM; - - if (xmit_type & XMIT_CSUM_V4) - tx_start_bd->bd_flags.as_bitfield |= - ETH_TX_BD_FLAGS_IP_CSUM; - else - tx_start_bd->bd_flags.as_bitfield |= - ETH_TX_BD_FLAGS_IPV6; - - if (!(xmit_type & XMIT_CSUM_TCP)) - tx_start_bd->bd_flags.as_bitfield |= - ETH_TX_BD_FLAGS_IS_UDP; - } - - if (CHIP_IS_E2(bp)) { - pbd_e2 = &fp->tx_desc_ring[bd_prod].parse_bd_e2; - memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2)); - /* Set PBD in checksum offload case */ - if (xmit_type & XMIT_CSUM) - hlen = bnx2x_set_pbd_csum_e2(bp, skb, - &pbd_e2_parsing_data, - xmit_type); - } else { - pbd_e1x = &fp->tx_desc_ring[bd_prod].parse_bd_e1x; - memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x)); - /* Set PBD in checksum offload case */ - if (xmit_type & XMIT_CSUM) - hlen = bnx2x_set_pbd_csum(bp, skb, pbd_e1x, xmit_type); - - } - - /* Map skb linear data for DMA */ - mapping = dma_map_single(&bp->pdev->dev, skb->data, - skb_headlen(skb), DMA_TO_DEVICE); - - /* Setup the data pointer of the first BD of the packet */ - tx_start_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); - tx_start_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); - nbd = skb_shinfo(skb)->nr_frags + 2; /* start_bd + pbd + frags */ - tx_start_bd->nbd = cpu_to_le16(nbd); - tx_start_bd->nbytes = cpu_to_le16(skb_headlen(skb)); - pkt_size = tx_start_bd->nbytes; - - DP(NETIF_MSG_TX_QUEUED, "first bd @%p addr (%x:%x) nbd %d" - " nbytes %d flags %x vlan %x\n", - tx_start_bd, tx_start_bd->addr_hi, tx_start_bd->addr_lo, - le16_to_cpu(tx_start_bd->nbd), le16_to_cpu(tx_start_bd->nbytes), - tx_start_bd->bd_flags.as_bitfield, - le16_to_cpu(tx_start_bd->vlan_or_ethertype)); - - if (xmit_type & XMIT_GSO) { - - DP(NETIF_MSG_TX_QUEUED, - "TSO packet len %d hlen %d total len %d tso size %d\n", - skb->len, hlen, skb_headlen(skb), - skb_shinfo(skb)->gso_size); - - tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO; - - if (unlikely(skb_headlen(skb) > hlen)) - bd_prod = bnx2x_tx_split(bp, fp, tx_buf, &tx_start_bd, - hlen, bd_prod, ++nbd); - if (CHIP_IS_E2(bp)) - bnx2x_set_pbd_gso_e2(skb, &pbd_e2_parsing_data, - xmit_type); - else - bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type); - } - - /* Set the PBD's parsing_data field if not zero - * (for the chips newer than 57711). - */ - if (pbd_e2_parsing_data) - pbd_e2->parsing_data = cpu_to_le32(pbd_e2_parsing_data); - - tx_data_bd = (struct eth_tx_bd *)tx_start_bd; - - /* Handle fragmented skb */ - for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { - skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; - - bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); - tx_data_bd = &fp->tx_desc_ring[bd_prod].reg_bd; - if (total_pkt_bd == NULL) - total_pkt_bd = &fp->tx_desc_ring[bd_prod].reg_bd; - - mapping = dma_map_page(&bp->pdev->dev, frag->page, - frag->page_offset, - frag->size, DMA_TO_DEVICE); - - tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping)); - tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping)); - tx_data_bd->nbytes = cpu_to_le16(frag->size); - le16_add_cpu(&pkt_size, frag->size); - - DP(NETIF_MSG_TX_QUEUED, - "frag %d bd @%p addr (%x:%x) nbytes %d\n", - i, tx_data_bd, tx_data_bd->addr_hi, tx_data_bd->addr_lo, - le16_to_cpu(tx_data_bd->nbytes)); - } - - DP(NETIF_MSG_TX_QUEUED, "last bd @%p\n", tx_data_bd); - - bd_prod = TX_BD(NEXT_TX_IDX(bd_prod)); - - /* now send a tx doorbell, counting the next BD - * if the packet contains or ends with it - */ - if (TX_BD_POFF(bd_prod) < nbd) - nbd++; - - if (total_pkt_bd != NULL) - total_pkt_bd->total_pkt_bytes = pkt_size; - - if (pbd_e1x) - DP(NETIF_MSG_TX_QUEUED, - "PBD (E1X) @%p ip_data %x ip_hlen %u ip_id %u lso_mss %u" - " tcp_flags %x xsum %x seq %u hlen %u\n", - pbd_e1x, pbd_e1x->global_data, pbd_e1x->ip_hlen_w, - pbd_e1x->ip_id, pbd_e1x->lso_mss, pbd_e1x->tcp_flags, - pbd_e1x->tcp_pseudo_csum, pbd_e1x->tcp_send_seq, - le16_to_cpu(pbd_e1x->total_hlen_w)); - if (pbd_e2) - DP(NETIF_MSG_TX_QUEUED, - "PBD (E2) @%p dst %x %x %x src %x %x %x parsing_data %x\n", - pbd_e2, pbd_e2->dst_mac_addr_hi, pbd_e2->dst_mac_addr_mid, - pbd_e2->dst_mac_addr_lo, pbd_e2->src_mac_addr_hi, - pbd_e2->src_mac_addr_mid, pbd_e2->src_mac_addr_lo, - pbd_e2->parsing_data); - DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod); - - /* - * Make sure that the BD data is updated before updating the producer - * since FW might read the BD right after the producer is updated. - * This is only applicable for weak-ordered memory model archs such - * as IA-64. The following barrier is also mandatory since FW will - * assumes packets must have BDs. - */ - wmb(); - - fp->tx_db.data.prod += nbd; - barrier(); - - DOORBELL(bp, fp->cid, fp->tx_db.raw); - - mmiowb(); - - fp->tx_bd_prod += nbd; - - if (unlikely(bnx2x_tx_avail(fp) < MAX_SKB_FRAGS + 3)) { - netif_tx_stop_queue(txq); - - /* paired memory barrier is in bnx2x_tx_int(), we have to keep - * ordering of set_bit() in netif_tx_stop_queue() and read of - * fp->bd_tx_cons */ - smp_mb(); - - fp->eth_q_stats.driver_xoff++; - if (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3) - netif_tx_wake_queue(txq); - } - fp->tx_pkt++; - - return NETDEV_TX_OK; -} - -/* called with rtnl_lock */ -int bnx2x_change_mac_addr(struct net_device *dev, void *p) -{ - struct sockaddr *addr = p; - struct bnx2x *bp = netdev_priv(dev); - - if (!is_valid_ether_addr((u8 *)(addr->sa_data))) - return -EINVAL; - - memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); - if (netif_running(dev)) - bnx2x_set_eth_mac(bp, 1); - - return 0; -} - -static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index) -{ - union host_hc_status_block *sb = &bnx2x_fp(bp, fp_index, status_blk); - struct bnx2x_fastpath *fp = &bp->fp[fp_index]; - - /* Common */ -#ifdef BCM_CNIC - if (IS_FCOE_IDX(fp_index)) { - memset(sb, 0, sizeof(union host_hc_status_block)); - fp->status_blk_mapping = 0; - - } else { -#endif - /* status blocks */ - if (CHIP_IS_E2(bp)) - BNX2X_PCI_FREE(sb->e2_sb, - bnx2x_fp(bp, fp_index, - status_blk_mapping), - sizeof(struct host_hc_status_block_e2)); - else - BNX2X_PCI_FREE(sb->e1x_sb, - bnx2x_fp(bp, fp_index, - status_blk_mapping), - sizeof(struct host_hc_status_block_e1x)); -#ifdef BCM_CNIC - } -#endif - /* Rx */ - if (!skip_rx_queue(bp, fp_index)) { - bnx2x_free_rx_bds(fp); - - /* fastpath rx rings: rx_buf rx_desc rx_comp */ - BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_buf_ring)); - BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_desc_ring), - bnx2x_fp(bp, fp_index, rx_desc_mapping), - sizeof(struct eth_rx_bd) * NUM_RX_BD); - - BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_comp_ring), - bnx2x_fp(bp, fp_index, rx_comp_mapping), - sizeof(struct eth_fast_path_rx_cqe) * - NUM_RCQ_BD); - - /* SGE ring */ - BNX2X_FREE(bnx2x_fp(bp, fp_index, rx_page_ring)); - BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, rx_sge_ring), - bnx2x_fp(bp, fp_index, rx_sge_mapping), - BCM_PAGE_SIZE * NUM_RX_SGE_PAGES); - } - - /* Tx */ - if (!skip_tx_queue(bp, fp_index)) { - /* fastpath tx rings: tx_buf tx_desc */ - BNX2X_FREE(bnx2x_fp(bp, fp_index, tx_buf_ring)); - BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, tx_desc_ring), - bnx2x_fp(bp, fp_index, tx_desc_mapping), - sizeof(union eth_tx_bd_types) * NUM_TX_BD); - } - /* end of fastpath */ -} - -void bnx2x_free_fp_mem(struct bnx2x *bp) -{ - int i; - for_each_queue(bp, i) - bnx2x_free_fp_mem_at(bp, i); -} - -static inline void set_sb_shortcuts(struct bnx2x *bp, int index) -{ - union host_hc_status_block status_blk = bnx2x_fp(bp, index, status_blk); - if (CHIP_IS_E2(bp)) { - bnx2x_fp(bp, index, sb_index_values) = - (__le16 *)status_blk.e2_sb->sb.index_values; - bnx2x_fp(bp, index, sb_running_index) = - (__le16 *)status_blk.e2_sb->sb.running_index; - } else { - bnx2x_fp(bp, index, sb_index_values) = - (__le16 *)status_blk.e1x_sb->sb.index_values; - bnx2x_fp(bp, index, sb_running_index) = - (__le16 *)status_blk.e1x_sb->sb.running_index; - } -} - -static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index) -{ - union host_hc_status_block *sb; - struct bnx2x_fastpath *fp = &bp->fp[index]; - int ring_size = 0; - - /* if rx_ring_size specified - use it */ - int rx_ring_size = bp->rx_ring_size ? bp->rx_ring_size : - MAX_RX_AVAIL/bp->num_queues; - - /* allocate at least number of buffers required by FW */ - rx_ring_size = max_t(int, fp->disable_tpa ? MIN_RX_SIZE_NONTPA : - MIN_RX_SIZE_TPA, - rx_ring_size); - - bnx2x_fp(bp, index, bp) = bp; - bnx2x_fp(bp, index, index) = index; - - /* Common */ - sb = &bnx2x_fp(bp, index, status_blk); -#ifdef BCM_CNIC - if (!IS_FCOE_IDX(index)) { -#endif - /* status blocks */ - if (CHIP_IS_E2(bp)) - BNX2X_PCI_ALLOC(sb->e2_sb, - &bnx2x_fp(bp, index, status_blk_mapping), - sizeof(struct host_hc_status_block_e2)); - else - BNX2X_PCI_ALLOC(sb->e1x_sb, - &bnx2x_fp(bp, index, status_blk_mapping), - sizeof(struct host_hc_status_block_e1x)); -#ifdef BCM_CNIC - } -#endif - set_sb_shortcuts(bp, index); - - /* Tx */ - if (!skip_tx_queue(bp, index)) { - /* fastpath tx rings: tx_buf tx_desc */ - BNX2X_ALLOC(bnx2x_fp(bp, index, tx_buf_ring), - sizeof(struct sw_tx_bd) * NUM_TX_BD); - BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, tx_desc_ring), - &bnx2x_fp(bp, index, tx_desc_mapping), - sizeof(union eth_tx_bd_types) * NUM_TX_BD); - } - - /* Rx */ - if (!skip_rx_queue(bp, index)) { - /* fastpath rx rings: rx_buf rx_desc rx_comp */ - BNX2X_ALLOC(bnx2x_fp(bp, index, rx_buf_ring), - sizeof(struct sw_rx_bd) * NUM_RX_BD); - BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_desc_ring), - &bnx2x_fp(bp, index, rx_desc_mapping), - sizeof(struct eth_rx_bd) * NUM_RX_BD); - - BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_comp_ring), - &bnx2x_fp(bp, index, rx_comp_mapping), - sizeof(struct eth_fast_path_rx_cqe) * - NUM_RCQ_BD); - - /* SGE ring */ - BNX2X_ALLOC(bnx2x_fp(bp, index, rx_page_ring), - sizeof(struct sw_rx_page) * NUM_RX_SGE); - BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, rx_sge_ring), - &bnx2x_fp(bp, index, rx_sge_mapping), - BCM_PAGE_SIZE * NUM_RX_SGE_PAGES); - /* RX BD ring */ - bnx2x_set_next_page_rx_bd(fp); - - /* CQ ring */ - bnx2x_set_next_page_rx_cq(fp); - - /* BDs */ - ring_size = bnx2x_alloc_rx_bds(fp, rx_ring_size); - if (ring_size < rx_ring_size) - goto alloc_mem_err; - } - - return 0; - -/* handles low memory cases */ -alloc_mem_err: - BNX2X_ERR("Unable to allocate full memory for queue %d (size %d)\n", - index, ring_size); - /* FW will drop all packets if queue is not big enough, - * In these cases we disable the queue - * Min size diferent for TPA and non-TPA queues - */ - if (ring_size < (fp->disable_tpa ? - MIN_RX_SIZE_NONTPA : MIN_RX_SIZE_TPA)) { - /* release memory allocated for this queue */ - bnx2x_free_fp_mem_at(bp, index); - return -ENOMEM; - } - return 0; -} - -int bnx2x_alloc_fp_mem(struct bnx2x *bp) -{ - int i; - - /** - * 1. Allocate FP for leading - fatal if error - * 2. {CNIC} Allocate FCoE FP - fatal if error - * 3. Allocate RSS - fix number of queues if error - */ - - /* leading */ - if (bnx2x_alloc_fp_mem_at(bp, 0)) - return -ENOMEM; -#ifdef BCM_CNIC - /* FCoE */ - if (bnx2x_alloc_fp_mem_at(bp, FCOE_IDX)) - return -ENOMEM; -#endif - /* RSS */ - for_each_nondefault_eth_queue(bp, i) - if (bnx2x_alloc_fp_mem_at(bp, i)) - break; - - /* handle memory failures */ - if (i != BNX2X_NUM_ETH_QUEUES(bp)) { - int delta = BNX2X_NUM_ETH_QUEUES(bp) - i; - - WARN_ON(delta < 0); -#ifdef BCM_CNIC - /** - * move non eth FPs next to last eth FP - * must be done in that order - * FCOE_IDX < FWD_IDX < OOO_IDX - */ - - /* move FCoE fp */ - bnx2x_move_fp(bp, FCOE_IDX, FCOE_IDX - delta); -#endif - bp->num_queues -= delta; - BNX2X_ERR("Adjusted num of queues from %d to %d\n", - bp->num_queues + delta, bp->num_queues); - } - - return 0; -} - -static int bnx2x_setup_irqs(struct bnx2x *bp) -{ - int rc = 0; - if (bp->flags & USING_MSIX_FLAG) { - rc = bnx2x_req_msix_irqs(bp); - if (rc) - return rc; - } else { - bnx2x_ack_int(bp); - rc = bnx2x_req_irq(bp); - if (rc) { - BNX2X_ERR("IRQ request failed rc %d, aborting\n", rc); - return rc; - } - if (bp->flags & USING_MSI_FLAG) { - bp->dev->irq = bp->pdev->irq; - netdev_info(bp->dev, "using MSI IRQ %d\n", - bp->pdev->irq); - } - } - - return 0; -} - -void bnx2x_free_mem_bp(struct bnx2x *bp) -{ - kfree(bp->fp); - kfree(bp->msix_table); - kfree(bp->ilt); -} - -int __devinit bnx2x_alloc_mem_bp(struct bnx2x *bp) -{ - struct bnx2x_fastpath *fp; - struct msix_entry *tbl; - struct bnx2x_ilt *ilt; - - /* fp array */ - fp = kzalloc(L2_FP_COUNT(bp->l2_cid_count)*sizeof(*fp), GFP_KERNEL); - if (!fp) - goto alloc_err; - bp->fp = fp; - - /* msix table */ - tbl = kzalloc((FP_SB_COUNT(bp->l2_cid_count) + 1) * sizeof(*tbl), - GFP_KERNEL); - if (!tbl) - goto alloc_err; - bp->msix_table = tbl; - - /* ilt */ - ilt = kzalloc(sizeof(*ilt), GFP_KERNEL); - if (!ilt) - goto alloc_err; - bp->ilt = ilt; - - return 0; -alloc_err: - bnx2x_free_mem_bp(bp); - return -ENOMEM; - -} - -static int bnx2x_reload_if_running(struct net_device *dev) -{ - struct bnx2x *bp = netdev_priv(dev); - - if (unlikely(!netif_running(dev))) - return 0; - - bnx2x_nic_unload(bp, UNLOAD_NORMAL); - return bnx2x_nic_load(bp, LOAD_NORMAL); -} - -/* called with rtnl_lock */ -int bnx2x_change_mtu(struct net_device *dev, int new_mtu) -{ - struct bnx2x *bp = netdev_priv(dev); - - if (bp->recovery_state != BNX2X_RECOVERY_DONE) { - printk(KERN_ERR "Handling parity error recovery. Try again later\n"); - return -EAGAIN; - } - - if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) || - ((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE)) - return -EINVAL; - - /* This does not race with packet allocation - * because the actual alloc size is - * only updated as part of load - */ - dev->mtu = new_mtu; - - return bnx2x_reload_if_running(dev); -} - -u32 bnx2x_fix_features(struct net_device *dev, u32 features) -{ - struct bnx2x *bp = netdev_priv(dev); - - /* TPA requires Rx CSUM offloading */ - if (!(features & NETIF_F_RXCSUM) || bp->disable_tpa) - features &= ~NETIF_F_LRO; - - return features; -} - -int bnx2x_set_features(struct net_device *dev, u32 features) -{ - struct bnx2x *bp = netdev_priv(dev); - u32 flags = bp->flags; - bool bnx2x_reload = false; - - if (features & NETIF_F_LRO) - flags |= TPA_ENABLE_FLAG; - else - flags &= ~TPA_ENABLE_FLAG; - - if (features & NETIF_F_LOOPBACK) { - if (bp->link_params.loopback_mode != LOOPBACK_BMAC) { - bp->link_params.loopback_mode = LOOPBACK_BMAC; - bnx2x_reload = true; - } - } else { - if (bp->link_params.loopback_mode != LOOPBACK_NONE) { - bp->link_params.loopback_mode = LOOPBACK_NONE; - bnx2x_reload = true; - } - } - - if (flags ^ bp->flags) { - bp->flags = flags; - bnx2x_reload = true; - } - - if (bnx2x_reload) { - if (bp->recovery_state == BNX2X_RECOVERY_DONE) - return bnx2x_reload_if_running(dev); - /* else: bnx2x_nic_load() will be called at end of recovery */ - } - - return 0; -} - -void bnx2x_tx_timeout(struct net_device *dev) -{ - struct bnx2x *bp = netdev_priv(dev); - -#ifdef BNX2X_STOP_ON_ERROR - if (!bp->panic) - bnx2x_panic(); -#endif - /* This allows the netif to be shutdown gracefully before resetting */ - schedule_delayed_work(&bp->reset_task, 0); -} - -int bnx2x_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct bnx2x *bp; - - if (!dev) { - dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n"); - return -ENODEV; - } - bp = netdev_priv(dev); - - rtnl_lock(); - - pci_save_state(pdev); - - if (!netif_running(dev)) { - rtnl_unlock(); - return 0; - } - - netif_device_detach(dev); - - bnx2x_nic_unload(bp, UNLOAD_CLOSE); - - bnx2x_set_power_state(bp, pci_choose_state(pdev, state)); - - rtnl_unlock(); - - return 0; -} - -int bnx2x_resume(struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct bnx2x *bp; - int rc; - - if (!dev) { - dev_err(&pdev->dev, "BAD net device from bnx2x_init_one\n"); - return -ENODEV; - } - bp = netdev_priv(dev); - - if (bp->recovery_state != BNX2X_RECOVERY_DONE) { - printk(KERN_ERR "Handling parity error recovery. Try again later\n"); - return -EAGAIN; - } - - rtnl_lock(); - - pci_restore_state(pdev); - - if (!netif_running(dev)) { - rtnl_unlock(); - return 0; - } - - bnx2x_set_power_state(bp, PCI_D0); - netif_device_attach(dev); - - /* Since the chip was reset, clear the FW sequence number */ - bp->fw_seq = 0; - rc = bnx2x_nic_load(bp, LOAD_OPEN); - - rtnl_unlock(); - - return rc; -} |