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![Dmitry Kravkov](/assets/img/avatar_default.png)
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2956 lines
74 KiB
C
2956 lines
74 KiB
C
/* bnx2x_cmn.c: Broadcom Everest network driver.
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*
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* Copyright (c) 2007-2011 Broadcom Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation.
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*
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* Maintained by: Eilon Greenstein <eilong@broadcom.com>
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* Written by: Eliezer Tamir
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* Based on code from Michael Chan's bnx2 driver
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* UDP CSUM errata workaround by Arik Gendelman
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* Slowpath and fastpath rework by Vladislav Zolotarov
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* Statistics and Link management by Yitchak Gertner
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*
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*/
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#include <linux/etherdevice.h>
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#include <linux/if_vlan.h>
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#include <linux/ip.h>
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#include <net/ipv6.h>
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#include <net/ip6_checksum.h>
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#include <linux/firmware.h>
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#include <linux/prefetch.h>
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#include "bnx2x_cmn.h"
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#include "bnx2x_init.h"
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static int bnx2x_setup_irqs(struct bnx2x *bp);
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/**
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* bnx2x_bz_fp - zero content of the fastpath structure.
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*
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* @bp: driver handle
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* @index: fastpath index to be zeroed
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*
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* Makes sure the contents of the bp->fp[index].napi is kept
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* intact.
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*/
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static inline void bnx2x_bz_fp(struct bnx2x *bp, int index)
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{
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struct bnx2x_fastpath *fp = &bp->fp[index];
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struct napi_struct orig_napi = fp->napi;
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/* bzero bnx2x_fastpath contents */
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memset(fp, 0, sizeof(*fp));
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/* Restore the NAPI object as it has been already initialized */
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fp->napi = orig_napi;
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}
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/**
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* bnx2x_move_fp - move content of the fastpath structure.
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*
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* @bp: driver handle
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* @from: source FP index
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* @to: destination FP index
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*
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* Makes sure the contents of the bp->fp[to].napi is kept
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* intact.
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*/
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static inline void bnx2x_move_fp(struct bnx2x *bp, int from, int to)
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{
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struct bnx2x_fastpath *from_fp = &bp->fp[from];
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struct bnx2x_fastpath *to_fp = &bp->fp[to];
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struct napi_struct orig_napi = to_fp->napi;
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/* Move bnx2x_fastpath contents */
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memcpy(to_fp, from_fp, sizeof(*to_fp));
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to_fp->index = to;
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/* Restore the NAPI object as it has been already initialized */
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to_fp->napi = orig_napi;
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}
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/* free skb in the packet ring at pos idx
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* return idx of last bd freed
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*/
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static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp,
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u16 idx)
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{
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struct sw_tx_bd *tx_buf = &fp->tx_buf_ring[idx];
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struct eth_tx_start_bd *tx_start_bd;
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struct eth_tx_bd *tx_data_bd;
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struct sk_buff *skb = tx_buf->skb;
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u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons;
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int nbd;
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/* prefetch skb end pointer to speedup dev_kfree_skb() */
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prefetch(&skb->end);
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DP(BNX2X_MSG_OFF, "pkt_idx %d buff @(%p)->skb %p\n",
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idx, tx_buf, skb);
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/* unmap first bd */
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DP(BNX2X_MSG_OFF, "free bd_idx %d\n", bd_idx);
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tx_start_bd = &fp->tx_desc_ring[bd_idx].start_bd;
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dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd),
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BD_UNMAP_LEN(tx_start_bd), DMA_TO_DEVICE);
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nbd = le16_to_cpu(tx_start_bd->nbd) - 1;
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#ifdef BNX2X_STOP_ON_ERROR
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if ((nbd - 1) > (MAX_SKB_FRAGS + 2)) {
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BNX2X_ERR("BAD nbd!\n");
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bnx2x_panic();
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}
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#endif
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new_cons = nbd + tx_buf->first_bd;
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/* Get the next bd */
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bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
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/* Skip a parse bd... */
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--nbd;
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bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
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/* ...and the TSO split header bd since they have no mapping */
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if (tx_buf->flags & BNX2X_TSO_SPLIT_BD) {
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--nbd;
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bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
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}
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/* now free frags */
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while (nbd > 0) {
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DP(BNX2X_MSG_OFF, "free frag bd_idx %d\n", bd_idx);
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tx_data_bd = &fp->tx_desc_ring[bd_idx].reg_bd;
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dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
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BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
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if (--nbd)
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bd_idx = TX_BD(NEXT_TX_IDX(bd_idx));
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}
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/* release skb */
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WARN_ON(!skb);
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dev_kfree_skb_any(skb);
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tx_buf->first_bd = 0;
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tx_buf->skb = NULL;
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return new_cons;
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}
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int bnx2x_tx_int(struct bnx2x_fastpath *fp)
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{
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struct bnx2x *bp = fp->bp;
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struct netdev_queue *txq;
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u16 hw_cons, sw_cons, bd_cons = fp->tx_bd_cons;
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#ifdef BNX2X_STOP_ON_ERROR
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if (unlikely(bp->panic))
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return -1;
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#endif
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txq = netdev_get_tx_queue(bp->dev, fp->index);
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hw_cons = le16_to_cpu(*fp->tx_cons_sb);
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sw_cons = fp->tx_pkt_cons;
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while (sw_cons != hw_cons) {
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u16 pkt_cons;
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pkt_cons = TX_BD(sw_cons);
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DP(NETIF_MSG_TX_DONE, "queue[%d]: hw_cons %u sw_cons %u "
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" pkt_cons %u\n",
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fp->index, hw_cons, sw_cons, pkt_cons);
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bd_cons = bnx2x_free_tx_pkt(bp, fp, pkt_cons);
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sw_cons++;
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}
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fp->tx_pkt_cons = sw_cons;
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fp->tx_bd_cons = bd_cons;
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/* Need to make the tx_bd_cons update visible to start_xmit()
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* before checking for netif_tx_queue_stopped(). Without the
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* memory barrier, there is a small possibility that
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* start_xmit() will miss it and cause the queue to be stopped
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* forever.
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*/
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smp_mb();
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if (unlikely(netif_tx_queue_stopped(txq))) {
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/* Taking tx_lock() is needed to prevent reenabling the queue
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* while it's empty. This could have happen if rx_action() gets
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* suspended in bnx2x_tx_int() after the condition before
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* netif_tx_wake_queue(), while tx_action (bnx2x_start_xmit()):
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*
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* stops the queue->sees fresh tx_bd_cons->releases the queue->
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* sends some packets consuming the whole queue again->
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* stops the queue
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*/
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__netif_tx_lock(txq, smp_processor_id());
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if ((netif_tx_queue_stopped(txq)) &&
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(bp->state == BNX2X_STATE_OPEN) &&
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(bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3))
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netif_tx_wake_queue(txq);
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__netif_tx_unlock(txq);
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}
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return 0;
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}
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static inline void bnx2x_update_last_max_sge(struct bnx2x_fastpath *fp,
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u16 idx)
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{
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u16 last_max = fp->last_max_sge;
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if (SUB_S16(idx, last_max) > 0)
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fp->last_max_sge = idx;
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}
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static void bnx2x_update_sge_prod(struct bnx2x_fastpath *fp,
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struct eth_fast_path_rx_cqe *fp_cqe)
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{
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struct bnx2x *bp = fp->bp;
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u16 sge_len = SGE_PAGE_ALIGN(le16_to_cpu(fp_cqe->pkt_len) -
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le16_to_cpu(fp_cqe->len_on_bd)) >>
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SGE_PAGE_SHIFT;
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u16 last_max, last_elem, first_elem;
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u16 delta = 0;
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u16 i;
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if (!sge_len)
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return;
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/* First mark all used pages */
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for (i = 0; i < sge_len; i++)
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SGE_MASK_CLEAR_BIT(fp,
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RX_SGE(le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[i])));
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DP(NETIF_MSG_RX_STATUS, "fp_cqe->sgl[%d] = %d\n",
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sge_len - 1, le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[sge_len - 1]));
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/* Here we assume that the last SGE index is the biggest */
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prefetch((void *)(fp->sge_mask));
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bnx2x_update_last_max_sge(fp,
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le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[sge_len - 1]));
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last_max = RX_SGE(fp->last_max_sge);
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last_elem = last_max >> RX_SGE_MASK_ELEM_SHIFT;
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first_elem = RX_SGE(fp->rx_sge_prod) >> RX_SGE_MASK_ELEM_SHIFT;
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/* If ring is not full */
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if (last_elem + 1 != first_elem)
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last_elem++;
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/* Now update the prod */
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for (i = first_elem; i != last_elem; i = NEXT_SGE_MASK_ELEM(i)) {
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if (likely(fp->sge_mask[i]))
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break;
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fp->sge_mask[i] = RX_SGE_MASK_ELEM_ONE_MASK;
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delta += RX_SGE_MASK_ELEM_SZ;
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}
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if (delta > 0) {
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fp->rx_sge_prod += delta;
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/* clear page-end entries */
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bnx2x_clear_sge_mask_next_elems(fp);
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}
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DP(NETIF_MSG_RX_STATUS,
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"fp->last_max_sge = %d fp->rx_sge_prod = %d\n",
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fp->last_max_sge, fp->rx_sge_prod);
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}
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static void bnx2x_tpa_start(struct bnx2x_fastpath *fp, u16 queue,
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struct sk_buff *skb, u16 cons, u16 prod)
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{
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struct bnx2x *bp = fp->bp;
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struct sw_rx_bd *cons_rx_buf = &fp->rx_buf_ring[cons];
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struct sw_rx_bd *prod_rx_buf = &fp->rx_buf_ring[prod];
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struct eth_rx_bd *prod_bd = &fp->rx_desc_ring[prod];
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dma_addr_t mapping;
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/* move empty skb from pool to prod and map it */
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prod_rx_buf->skb = fp->tpa_pool[queue].skb;
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mapping = dma_map_single(&bp->pdev->dev, fp->tpa_pool[queue].skb->data,
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fp->rx_buf_size, DMA_FROM_DEVICE);
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dma_unmap_addr_set(prod_rx_buf, mapping, mapping);
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/* move partial skb from cons to pool (don't unmap yet) */
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fp->tpa_pool[queue] = *cons_rx_buf;
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/* mark bin state as start - print error if current state != stop */
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if (fp->tpa_state[queue] != BNX2X_TPA_STOP)
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BNX2X_ERR("start of bin not in stop [%d]\n", queue);
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fp->tpa_state[queue] = BNX2X_TPA_START;
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/* point prod_bd to new skb */
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prod_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
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prod_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
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#ifdef BNX2X_STOP_ON_ERROR
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fp->tpa_queue_used |= (1 << queue);
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#ifdef _ASM_GENERIC_INT_L64_H
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DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%lx\n",
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#else
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DP(NETIF_MSG_RX_STATUS, "fp->tpa_queue_used = 0x%llx\n",
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#endif
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fp->tpa_queue_used);
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#endif
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}
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/* Timestamp option length allowed for TPA aggregation:
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*
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* nop nop kind length echo val
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*/
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#define TPA_TSTAMP_OPT_LEN 12
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/**
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* bnx2x_set_lro_mss - calculate the approximate value of the MSS
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*
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* @bp: driver handle
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* @parsing_flags: parsing flags from the START CQE
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* @len_on_bd: total length of the first packet for the
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* aggregation.
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*
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* Approximate value of the MSS for this aggregation calculated using
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* the first packet of it.
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*/
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static inline u16 bnx2x_set_lro_mss(struct bnx2x *bp, u16 parsing_flags,
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u16 len_on_bd)
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{
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/* TPA arrgregation won't have an IP options and TCP options
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* other than timestamp.
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*/
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u16 hdrs_len = ETH_HLEN + sizeof(struct iphdr) + sizeof(struct tcphdr);
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/* Check if there was a TCP timestamp, if there is it's will
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* always be 12 bytes length: nop nop kind length echo val.
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*
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* Otherwise FW would close the aggregation.
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*/
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if (parsing_flags & PARSING_FLAGS_TIME_STAMP_EXIST_FLAG)
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hdrs_len += TPA_TSTAMP_OPT_LEN;
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return len_on_bd - hdrs_len;
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}
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static int bnx2x_fill_frag_skb(struct bnx2x *bp, struct bnx2x_fastpath *fp,
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struct sk_buff *skb,
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struct eth_fast_path_rx_cqe *fp_cqe,
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u16 cqe_idx, u16 parsing_flags)
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{
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struct sw_rx_page *rx_pg, old_rx_pg;
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u16 len_on_bd = le16_to_cpu(fp_cqe->len_on_bd);
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u32 i, frag_len, frag_size, pages;
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int err;
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int j;
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frag_size = le16_to_cpu(fp_cqe->pkt_len) - len_on_bd;
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pages = SGE_PAGE_ALIGN(frag_size) >> SGE_PAGE_SHIFT;
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/* This is needed in order to enable forwarding support */
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if (frag_size)
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skb_shinfo(skb)->gso_size = bnx2x_set_lro_mss(bp, parsing_flags,
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len_on_bd);
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#ifdef BNX2X_STOP_ON_ERROR
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if (pages > min_t(u32, 8, MAX_SKB_FRAGS)*SGE_PAGE_SIZE*PAGES_PER_SGE) {
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BNX2X_ERR("SGL length is too long: %d. CQE index is %d\n",
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pages, cqe_idx);
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BNX2X_ERR("fp_cqe->pkt_len = %d fp_cqe->len_on_bd = %d\n",
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fp_cqe->pkt_len, len_on_bd);
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bnx2x_panic();
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return -EINVAL;
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}
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#endif
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/* Run through the SGL and compose the fragmented skb */
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for (i = 0, j = 0; i < pages; i += PAGES_PER_SGE, j++) {
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u16 sge_idx =
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RX_SGE(le16_to_cpu(fp_cqe->sgl_or_raw_data.sgl[j]));
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/* FW gives the indices of the SGE as if the ring is an array
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(meaning that "next" element will consume 2 indices) */
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frag_len = min(frag_size, (u32)(SGE_PAGE_SIZE*PAGES_PER_SGE));
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rx_pg = &fp->rx_page_ring[sge_idx];
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old_rx_pg = *rx_pg;
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/* If we fail to allocate a substitute page, we simply stop
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where we are and drop the whole packet */
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err = bnx2x_alloc_rx_sge(bp, fp, sge_idx);
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if (unlikely(err)) {
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fp->eth_q_stats.rx_skb_alloc_failed++;
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return err;
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}
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/* Unmap the page as we r going to pass it to the stack */
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dma_unmap_page(&bp->pdev->dev,
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dma_unmap_addr(&old_rx_pg, mapping),
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SGE_PAGE_SIZE*PAGES_PER_SGE, DMA_FROM_DEVICE);
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/* Add one frag and update the appropriate fields in the skb */
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skb_fill_page_desc(skb, j, old_rx_pg.page, 0, frag_len);
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skb->data_len += frag_len;
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skb->truesize += frag_len;
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skb->len += frag_len;
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frag_size -= frag_len;
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}
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return 0;
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}
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static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
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u16 queue, int pad, int len, union eth_rx_cqe *cqe,
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u16 cqe_idx)
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{
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struct sw_rx_bd *rx_buf = &fp->tpa_pool[queue];
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struct sk_buff *skb = rx_buf->skb;
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/* alloc new skb */
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struct sk_buff *new_skb = netdev_alloc_skb(bp->dev, fp->rx_buf_size);
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/* Unmap skb in the pool anyway, as we are going to change
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pool entry status to BNX2X_TPA_STOP even if new skb allocation
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fails. */
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dma_unmap_single(&bp->pdev->dev, dma_unmap_addr(rx_buf, mapping),
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fp->rx_buf_size, DMA_FROM_DEVICE);
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if (likely(new_skb)) {
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/* fix ip xsum and give it to the stack */
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/* (no need to map the new skb) */
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u16 parsing_flags =
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le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags);
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prefetch(skb);
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prefetch(((char *)(skb)) + L1_CACHE_BYTES);
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#ifdef BNX2X_STOP_ON_ERROR
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if (pad + len > fp->rx_buf_size) {
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BNX2X_ERR("skb_put is about to fail... "
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"pad %d len %d rx_buf_size %d\n",
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pad, len, fp->rx_buf_size);
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bnx2x_panic();
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return;
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}
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#endif
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|
|
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;
|
|
}
|