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bnx2x: Re-factor Tx code
Add support for IPv6 TSO Re-factor the Tx code with smaller functions to increase readability. Add linearization code in case packet is too fragmented for the microcode to handle. Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eilon Greenstein
David S. Miller
parent
7a9b25577c
commit
755735eb34
@ -8302,10 +8302,14 @@ static int bnx2x_set_rx_csum(struct net_device *dev, u32 data)
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static int bnx2x_set_tso(struct net_device *dev, u32 data)
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{
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if (data)
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if (data) {
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dev->features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
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else
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dev->features |= NETIF_F_TSO6;
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} else {
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dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO_ECN);
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dev->features &= ~NETIF_F_TSO6;
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}
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return 0;
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}
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@ -8339,10 +8343,6 @@ static void bnx2x_self_test(struct net_device *dev,
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buf[0] = 1;
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etest->flags |= ETH_TEST_FL_FAILED;
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}
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#ifdef BNX2X_EXTRA_DEBUG
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bnx2x_panic_dump(bp);
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#endif
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}
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static const struct {
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@ -8545,7 +8545,7 @@ static struct ethtool_ops bnx2x_ethtool_ops = {
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.get_rx_csum = bnx2x_get_rx_csum,
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.set_rx_csum = bnx2x_set_rx_csum,
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.get_tx_csum = ethtool_op_get_tx_csum,
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.set_tx_csum = ethtool_op_set_tx_csum,
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.set_tx_csum = ethtool_op_set_tx_hw_csum,
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.set_flags = bnx2x_set_flags,
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.get_flags = ethtool_op_get_flags,
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.get_sg = ethtool_op_get_sg,
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@ -8651,9 +8651,180 @@ poll_panic:
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return work_done;
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}
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/* Called with netif_tx_lock.
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/* we split the first BD into headers and data BDs
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* to ease the pain of our fellow micocode engineers
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* we use one mapping for both BDs
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* So far this has only been observed to happen
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* in Other Operating Systems(TM)
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*/
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static noinline u16 bnx2x_tx_split(struct bnx2x *bp,
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struct bnx2x_fastpath *fp,
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struct eth_tx_bd **tx_bd, u16 hlen,
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u16 bd_prod, int nbd)
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{
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struct eth_tx_bd *h_tx_bd = *tx_bd;
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struct eth_tx_bd *d_tx_bd;
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dma_addr_t mapping;
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int old_len = le16_to_cpu(h_tx_bd->nbytes);
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/* first fix first BD */
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h_tx_bd->nbd = cpu_to_le16(nbd);
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h_tx_bd->nbytes = cpu_to_le16(hlen);
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DP(NETIF_MSG_TX_QUEUED, "TSO split header size is %d "
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"(%x:%x) nbd %d\n", h_tx_bd->nbytes, h_tx_bd->addr_hi,
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h_tx_bd->addr_lo, h_tx_bd->nbd);
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/* now get a new data BD
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* (after the pbd) and fill it */
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bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
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d_tx_bd = &fp->tx_desc_ring[bd_prod];
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mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi),
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le32_to_cpu(h_tx_bd->addr_lo)) + hlen;
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d_tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
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d_tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
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d_tx_bd->nbytes = cpu_to_le16(old_len - hlen);
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d_tx_bd->vlan = 0;
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/* this marks the BD as one that has no individual mapping
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* the FW ignores this flag in a BD not marked start
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*/
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d_tx_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_SW_LSO;
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DP(NETIF_MSG_TX_QUEUED,
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"TSO split data size is %d (%x:%x)\n",
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d_tx_bd->nbytes, d_tx_bd->addr_hi, d_tx_bd->addr_lo);
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/* update tx_bd for marking the last BD flag */
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*tx_bd = d_tx_bd;
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return bd_prod;
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}
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static inline u16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix)
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{
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if (fix > 0)
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csum = (u16) ~csum_fold(csum_sub(csum,
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csum_partial(t_header - fix, fix, 0)));
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else if (fix < 0)
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csum = (u16) ~csum_fold(csum_add(csum,
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csum_partial(t_header, -fix, 0)));
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return swab16(csum);
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}
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static inline u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb)
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{
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u32 rc;
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if (skb->ip_summed != CHECKSUM_PARTIAL)
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rc = XMIT_PLAIN;
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else {
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if (skb->protocol == ntohs(ETH_P_IPV6)) {
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rc = XMIT_CSUM_V6;
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if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
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rc |= XMIT_CSUM_TCP;
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} else {
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rc = XMIT_CSUM_V4;
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if (ip_hdr(skb)->protocol == IPPROTO_TCP)
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rc |= XMIT_CSUM_TCP;
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}
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}
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if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4)
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rc |= XMIT_GSO_V4;
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else if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6)
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rc |= XMIT_GSO_V6;
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return rc;
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}
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/* check if packet requires linearization (packet is too fragmented) */
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static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb,
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u32 xmit_type)
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{
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int to_copy = 0;
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int hlen = 0;
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int first_bd_sz = 0;
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/* 3 = 1 (for linear data BD) + 2 (for PBD and last BD) */
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if (skb_shinfo(skb)->nr_frags >= (MAX_FETCH_BD - 3)) {
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if (xmit_type & XMIT_GSO) {
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unsigned short lso_mss = skb_shinfo(skb)->gso_size;
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/* Check if LSO packet needs to be copied:
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3 = 1 (for headers BD) + 2 (for PBD and last BD) */
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int wnd_size = MAX_FETCH_BD - 3;
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/* Number of widnows to check */
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int num_wnds = skb_shinfo(skb)->nr_frags - wnd_size;
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int wnd_idx = 0;
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int frag_idx = 0;
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u32 wnd_sum = 0;
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/* Headers length */
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hlen = (int)(skb_transport_header(skb) - skb->data) +
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tcp_hdrlen(skb);
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/* Amount of data (w/o headers) on linear part of SKB*/
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first_bd_sz = skb_headlen(skb) - hlen;
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wnd_sum = first_bd_sz;
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/* Calculate the first sum - it's special */
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for (frag_idx = 0; frag_idx < wnd_size - 1; frag_idx++)
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wnd_sum +=
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skb_shinfo(skb)->frags[frag_idx].size;
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/* If there was data on linear skb data - check it */
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if (first_bd_sz > 0) {
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if (unlikely(wnd_sum < lso_mss)) {
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to_copy = 1;
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goto exit_lbl;
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}
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wnd_sum -= first_bd_sz;
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}
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/* Others are easier: run through the frag list and
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check all windows */
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for (wnd_idx = 0; wnd_idx <= num_wnds; wnd_idx++) {
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wnd_sum +=
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skb_shinfo(skb)->frags[wnd_idx + wnd_size - 1].size;
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if (unlikely(wnd_sum < lso_mss)) {
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to_copy = 1;
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break;
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}
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wnd_sum -=
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skb_shinfo(skb)->frags[wnd_idx].size;
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}
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} else {
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/* in non-LSO too fragmented packet should always
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be linearized */
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to_copy = 1;
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}
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}
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exit_lbl:
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if (unlikely(to_copy))
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DP(NETIF_MSG_TX_QUEUED,
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"Linearization IS REQUIRED for %s packet. "
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"num_frags %d hlen %d first_bd_sz %d\n",
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(xmit_type & XMIT_GSO) ? "LSO" : "non-LSO",
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skb_shinfo(skb)->nr_frags, hlen, first_bd_sz);
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return to_copy;
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}
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/* called with netif_tx_lock
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* bnx2x_tx_int() runs without netif_tx_lock unless it needs to call
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* netif_wake_queue().
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* netif_wake_queue()
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*/
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static int bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
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{
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@ -8663,17 +8834,21 @@ static int bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
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struct eth_tx_bd *tx_bd;
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struct eth_tx_parse_bd *pbd = NULL;
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u16 pkt_prod, bd_prod;
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int nbd, fp_index = 0;
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int nbd, fp_index;
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dma_addr_t mapping;
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u32 xmit_type = bnx2x_xmit_type(bp, skb);
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int vlan_off = (bp->e1hov ? 4 : 0);
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int i;
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u8 hlen = 0;
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#ifdef BNX2X_STOP_ON_ERROR
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if (unlikely(bp->panic))
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return NETDEV_TX_BUSY;
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#endif
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fp_index = smp_processor_id() % (bp->num_queues);
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fp_index = (smp_processor_id() % bp->num_queues);
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fp = &bp->fp[fp_index];
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if (unlikely(bnx2x_tx_avail(bp->fp) <
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(skb_shinfo(skb)->nr_frags + 3))) {
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bp->eth_stats.driver_xoff++,
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@ -8682,20 +8857,37 @@ static int bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
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return NETDEV_TX_BUSY;
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}
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DP(NETIF_MSG_TX_QUEUED, "SKB: summed %x protocol %x protocol(%x,%x)"
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" gso type %x xmit_type %x\n",
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skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
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ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type);
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/* First, check if we need to linearaize the skb
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(due to FW restrictions) */
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if (bnx2x_pkt_req_lin(bp, skb, xmit_type)) {
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/* Statistics of linearization */
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bp->lin_cnt++;
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if (skb_linearize(skb) != 0) {
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DP(NETIF_MSG_TX_QUEUED, "SKB linearization failed - "
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"silently dropping this SKB\n");
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dev_kfree_skb_any(skb);
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return 0;
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}
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}
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/*
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This is a bit ugly. First we use one BD which we mark as start,
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Please read carefully. First we use one BD which we mark as start,
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then for TSO or xsum we have a parsing info BD,
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and only then we have the rest of the TSO bds.
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and only then we have the rest of the TSO BDs.
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(don't forget to mark the last one as last,
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and to unmap only AFTER you write to the BD ...)
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I would like to thank DovH for this mess.
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And above all, all pdb sizes are in words - NOT DWORDS!
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*/
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pkt_prod = fp->tx_pkt_prod++;
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bd_prod = fp->tx_bd_prod;
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bd_prod = TX_BD(bd_prod);
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bd_prod = TX_BD(fp->tx_bd_prod);
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/* get a tx_buff and first bd */
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/* get a tx_buf and first BD */
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tx_buf = &fp->tx_buf_ring[TX_BD(pkt_prod)];
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tx_bd = &fp->tx_desc_ring[bd_prod];
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@ -8704,65 +8896,80 @@ static int bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
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ETH_TX_BD_ETH_ADDR_TYPE_SHIFT);
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tx_bd->general_data |= 1; /* header nbd */
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/* remember the first bd of the packet */
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tx_buf->first_bd = bd_prod;
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/* remember the first BD of the packet */
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tx_buf->first_bd = fp->tx_bd_prod;
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tx_buf->skb = skb;
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DP(NETIF_MSG_TX_QUEUED,
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"sending pkt %u @%p next_idx %u bd %u @%p\n",
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pkt_prod, tx_buf, fp->tx_pkt_prod, bd_prod, tx_bd);
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if (skb->ip_summed == CHECKSUM_PARTIAL) {
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struct iphdr *iph = ip_hdr(skb);
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u8 len;
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tx_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IP_CSUM;
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/* turn on parsing and get a bd */
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bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
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pbd = (void *)&fp->tx_desc_ring[bd_prod];
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len = ((u8 *)iph - (u8 *)skb->data) / 2;
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/* for now NS flag is not used in Linux */
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pbd->global_data = (len |
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((skb->protocol == ntohs(ETH_P_8021Q)) <<
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ETH_TX_PARSE_BD_LLC_SNAP_EN_SHIFT));
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pbd->ip_hlen = ip_hdrlen(skb) / 2;
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pbd->total_hlen = cpu_to_le16(len + pbd->ip_hlen);
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if (iph->protocol == IPPROTO_TCP) {
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struct tcphdr *th = tcp_hdr(skb);
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tx_bd->bd_flags.as_bitfield |=
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ETH_TX_BD_FLAGS_TCP_CSUM;
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pbd->tcp_flags = pbd_tcp_flags(skb);
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pbd->total_hlen += cpu_to_le16(tcp_hdrlen(skb) / 2);
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pbd->tcp_pseudo_csum = swab16(th->check);
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} else if (iph->protocol == IPPROTO_UDP) {
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struct udphdr *uh = udp_hdr(skb);
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tx_bd->bd_flags.as_bitfield |=
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ETH_TX_BD_FLAGS_TCP_CSUM;
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pbd->total_hlen += cpu_to_le16(4);
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pbd->global_data |= ETH_TX_PARSE_BD_CS_ANY_FLG;
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pbd->cs_offset = 5; /* 10 >> 1 */
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pbd->tcp_pseudo_csum = 0;
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/* HW bug: we need to subtract 10 bytes before the
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* UDP header from the csum
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*/
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uh->check = (u16) ~csum_fold(csum_sub(uh->check,
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csum_partial(((u8 *)(uh)-10), 10, 0)));
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}
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}
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if ((bp->vlgrp != NULL) && vlan_tx_tag_present(skb)) {
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tx_bd->vlan = cpu_to_le16(vlan_tx_tag_get(skb));
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tx_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_VLAN_TAG;
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} else {
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vlan_off += 4;
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} else
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tx_bd->vlan = cpu_to_le16(pkt_prod);
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if (xmit_type) {
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/* turn on parsing and get a BD */
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bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
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pbd = (void *)&fp->tx_desc_ring[bd_prod];
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memset(pbd, 0, sizeof(struct eth_tx_parse_bd));
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}
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if (xmit_type & XMIT_CSUM) {
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hlen = (skb_network_header(skb) - skb->data + vlan_off) / 2;
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/* for now NS flag is not used in Linux */
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pbd->global_data = (hlen |
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((skb->protocol == ntohs(ETH_P_8021Q)) <<
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ETH_TX_PARSE_BD_LLC_SNAP_EN_SHIFT));
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pbd->ip_hlen = (skb_transport_header(skb) -
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skb_network_header(skb)) / 2;
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hlen += pbd->ip_hlen + tcp_hdrlen(skb) / 2;
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pbd->total_hlen = cpu_to_le16(hlen);
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hlen = hlen*2 - vlan_off;
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tx_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_TCP_CSUM;
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if (xmit_type & XMIT_CSUM_V4)
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tx_bd->bd_flags.as_bitfield |=
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ETH_TX_BD_FLAGS_IP_CSUM;
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else
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tx_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_IPV6;
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if (xmit_type & XMIT_CSUM_TCP) {
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pbd->tcp_pseudo_csum = swab16(tcp_hdr(skb)->check);
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} else {
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s8 fix = SKB_CS_OFF(skb); /* signed! */
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pbd->global_data |= ETH_TX_PARSE_BD_CS_ANY_FLG;
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pbd->cs_offset = fix / 2;
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DP(NETIF_MSG_TX_QUEUED,
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"hlen %d offset %d fix %d csum before fix %x\n",
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le16_to_cpu(pbd->total_hlen), pbd->cs_offset, fix,
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SKB_CS(skb));
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/* HW bug: fixup the CSUM */
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pbd->tcp_pseudo_csum =
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bnx2x_csum_fix(skb_transport_header(skb),
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SKB_CS(skb), fix);
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DP(NETIF_MSG_TX_QUEUED, "csum after fix %x\n",
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pbd->tcp_pseudo_csum);
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}
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}
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mapping = pci_map_single(bp->pdev, skb->data,
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skb->len, PCI_DMA_TODEVICE);
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||||
skb_headlen(skb), PCI_DMA_TODEVICE);
|
||||
|
||||
tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
|
||||
tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
|
||||
@ -8771,13 +8978,12 @@ static int bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
tx_bd->nbytes = cpu_to_le16(skb_headlen(skb));
|
||||
|
||||
DP(NETIF_MSG_TX_QUEUED, "first bd @%p addr (%x:%x) nbd %d"
|
||||
" nbytes %d flags %x vlan %u\n",
|
||||
tx_bd, tx_bd->addr_hi, tx_bd->addr_lo, tx_bd->nbd,
|
||||
tx_bd->nbytes, tx_bd->bd_flags.as_bitfield, tx_bd->vlan);
|
||||
" nbytes %d flags %x vlan %x\n",
|
||||
tx_bd, tx_bd->addr_hi, tx_bd->addr_lo, le16_to_cpu(tx_bd->nbd),
|
||||
le16_to_cpu(tx_bd->nbytes), tx_bd->bd_flags.as_bitfield,
|
||||
le16_to_cpu(tx_bd->vlan));
|
||||
|
||||
if (skb_shinfo(skb)->gso_size &&
|
||||
(skb->len > (bp->dev->mtu + ETH_HLEN))) {
|
||||
int hlen = 2 * le16_to_cpu(pbd->total_hlen);
|
||||
if (xmit_type & XMIT_GSO) {
|
||||
|
||||
DP(NETIF_MSG_TX_QUEUED,
|
||||
"TSO packet len %d hlen %d total len %d tso size %d\n",
|
||||
@ -8786,99 +8992,60 @@ static int bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
|
||||
tx_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO;
|
||||
|
||||
if (tx_bd->nbytes > cpu_to_le16(hlen)) {
|
||||
/* we split the first bd into headers and data bds
|
||||
* to ease the pain of our fellow micocode engineers
|
||||
* we use one mapping for both bds
|
||||
* So far this has only been observed to happen
|
||||
* in Other Operating Systems(TM)
|
||||
*/
|
||||
|
||||
/* first fix first bd */
|
||||
nbd++;
|
||||
tx_bd->nbd = cpu_to_le16(nbd);
|
||||
tx_bd->nbytes = cpu_to_le16(hlen);
|
||||
|
||||
/* we only print this as an error
|
||||
* because we don't think this will ever happen.
|
||||
*/
|
||||
BNX2X_ERR("TSO split header size is %d (%x:%x)"
|
||||
" nbd %d\n", tx_bd->nbytes, tx_bd->addr_hi,
|
||||
tx_bd->addr_lo, tx_bd->nbd);
|
||||
|
||||
/* now get a new data bd
|
||||
* (after the pbd) and fill it */
|
||||
bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
|
||||
tx_bd = &fp->tx_desc_ring[bd_prod];
|
||||
|
||||
tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
|
||||
tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping) + hlen);
|
||||
tx_bd->nbytes = cpu_to_le16(skb_headlen(skb) - hlen);
|
||||
tx_bd->vlan = cpu_to_le16(pkt_prod);
|
||||
/* this marks the bd
|
||||
* as one that has no individual mapping
|
||||
* the FW ignores this flag in a bd not marked start
|
||||
*/
|
||||
tx_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_SW_LSO;
|
||||
DP(NETIF_MSG_TX_QUEUED,
|
||||
"TSO split data size is %d (%x:%x)\n",
|
||||
tx_bd->nbytes, tx_bd->addr_hi, tx_bd->addr_lo);
|
||||
}
|
||||
|
||||
if (!pbd) {
|
||||
/* supposed to be unreached
|
||||
* (and therefore not handled properly...)
|
||||
*/
|
||||
BNX2X_ERR("LSO with no PBD\n");
|
||||
BUG();
|
||||
}
|
||||
if (unlikely(skb_headlen(skb) > hlen))
|
||||
bd_prod = bnx2x_tx_split(bp, fp, &tx_bd, hlen,
|
||||
bd_prod, ++nbd);
|
||||
|
||||
pbd->lso_mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
|
||||
pbd->tcp_send_seq = swab32(tcp_hdr(skb)->seq);
|
||||
pbd->ip_id = swab16(ip_hdr(skb)->id);
|
||||
pbd->tcp_pseudo_csum =
|
||||
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_PSEUDO_CS_WITHOUT_LEN;
|
||||
}
|
||||
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
|
||||
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
|
||||
|
||||
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_bd = &fp->tx_desc_ring[bd_prod];
|
||||
|
||||
bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
|
||||
tx_bd = &fp->tx_desc_ring[bd_prod];
|
||||
mapping = pci_map_page(bp->pdev, frag->page, frag->page_offset,
|
||||
frag->size, PCI_DMA_TODEVICE);
|
||||
|
||||
mapping = pci_map_page(bp->pdev, frag->page,
|
||||
frag->page_offset,
|
||||
frag->size, PCI_DMA_TODEVICE);
|
||||
tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
|
||||
tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
|
||||
tx_bd->nbytes = cpu_to_le16(frag->size);
|
||||
tx_bd->vlan = cpu_to_le16(pkt_prod);
|
||||
tx_bd->bd_flags.as_bitfield = 0;
|
||||
|
||||
tx_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
|
||||
tx_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
|
||||
tx_bd->nbytes = cpu_to_le16(frag->size);
|
||||
tx_bd->vlan = cpu_to_le16(pkt_prod);
|
||||
tx_bd->bd_flags.as_bitfield = 0;
|
||||
DP(NETIF_MSG_TX_QUEUED, "frag %d bd @%p"
|
||||
" addr (%x:%x) nbytes %d flags %x\n",
|
||||
i, tx_bd, tx_bd->addr_hi, tx_bd->addr_lo,
|
||||
tx_bd->nbytes, tx_bd->bd_flags.as_bitfield);
|
||||
} /* for */
|
||||
DP(NETIF_MSG_TX_QUEUED,
|
||||
"frag %d bd @%p addr (%x:%x) nbytes %d flags %x\n",
|
||||
i, tx_bd, tx_bd->addr_hi, tx_bd->addr_lo,
|
||||
le16_to_cpu(tx_bd->nbytes), tx_bd->bd_flags.as_bitfield);
|
||||
}
|
||||
|
||||
/* now at last mark the bd as the last bd */
|
||||
/* now at last mark the BD as the last BD */
|
||||
tx_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_END_BD;
|
||||
|
||||
DP(NETIF_MSG_TX_QUEUED, "last bd @%p flags %x\n",
|
||||
tx_bd, tx_bd->bd_flags.as_bitfield);
|
||||
|
||||
tx_buf->skb = skb;
|
||||
|
||||
bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
|
||||
|
||||
/* now send a tx doorbell, counting the next bd
|
||||
/* now send a tx doorbell, counting the next BD
|
||||
* if the packet contains or ends with it
|
||||
*/
|
||||
if (TX_BD_POFF(bd_prod) < nbd)
|
||||
@ -8890,20 +9057,20 @@ static int bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
" tcp_flags %x xsum %x seq %u hlen %u\n",
|
||||
pbd, pbd->global_data, pbd->ip_hlen, pbd->ip_id,
|
||||
pbd->lso_mss, pbd->tcp_flags, pbd->tcp_pseudo_csum,
|
||||
pbd->tcp_send_seq, pbd->total_hlen);
|
||||
pbd->tcp_send_seq, le16_to_cpu(pbd->total_hlen));
|
||||
|
||||
DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %u bd %d\n", nbd, bd_prod);
|
||||
DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod);
|
||||
|
||||
fp->hw_tx_prods->bds_prod =
|
||||
cpu_to_le16(le16_to_cpu(fp->hw_tx_prods->bds_prod) + nbd);
|
||||
mb(); /* FW restriction: must not reorder writing nbd and packets */
|
||||
fp->hw_tx_prods->packets_prod =
|
||||
cpu_to_le32(le32_to_cpu(fp->hw_tx_prods->packets_prod) + 1);
|
||||
DOORBELL(bp, fp_index, 0);
|
||||
DOORBELL(bp, FP_IDX(fp), 0);
|
||||
|
||||
mmiowb();
|
||||
|
||||
fp->tx_bd_prod = bd_prod;
|
||||
fp->tx_bd_prod += nbd;
|
||||
dev->trans_start = jiffies;
|
||||
|
||||
if (unlikely(bnx2x_tx_avail(fp) < MAX_SKB_FRAGS + 3)) {
|
||||
@ -9331,10 +9498,7 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
|
||||
dev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
|
||||
#endif
|
||||
dev->features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
|
||||
|
||||
bp->timer_interval = HZ;
|
||||
bp->current_interval = (poll ? poll : HZ);
|
||||
|
||||
dev->features |= NETIF_F_TSO6;
|
||||
|
||||
return 0;
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user