qlge: Add RX frame handlers for non-split frames.
New handlers are added here to handle: 1) Small frames (<256 bytes) in a single small buffer. Allocate a new skb and copy the frame. 2) Large frame (>256 bytes) in a page chunk. Allocate an skb, tack it on frags, post to napi_gro_receive(). Signed-off-by: Ron Mercer <ron.mercer@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ron Mercer
David S. Miller
parent
572c526fb1
commit
4f848c0a9c
1 changed files with 257 additions and 4 deletions
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@ -1433,6 +1433,209 @@ static int ql_map_send(struct ql_adapter *qdev,
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return NETDEV_TX_BUSY;
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}
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/* Process an inbound completion from an rx ring. */
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static void ql_process_mac_rx_page(struct ql_adapter *qdev,
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struct rx_ring *rx_ring,
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struct ib_mac_iocb_rsp *ib_mac_rsp,
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u32 length,
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u16 vlan_id)
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{
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struct net_device *ndev = qdev->ndev;
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struct sk_buff *skb = NULL;
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void *addr;
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struct bq_desc *lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
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struct napi_struct *napi = &rx_ring->napi;
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skb = netdev_alloc_skb(ndev, length);
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if (!skb) {
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QPRINTK(qdev, DRV, ERR, "Couldn't get an skb, "
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"need to unwind!.\n");
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rx_ring->rx_dropped++;
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put_page(lbq_desc->p.pg_chunk.page);
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return;
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}
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addr = lbq_desc->p.pg_chunk.va;
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prefetch(addr);
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/* Frame error, so drop the packet. */
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if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
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QPRINTK(qdev, DRV, ERR, "Receive error, flags2 = 0x%x\n",
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ib_mac_rsp->flags2);
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rx_ring->rx_errors++;
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goto err_out;
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}
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/* The max framesize filter on this chip is set higher than
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* MTU since FCoE uses 2k frames.
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*/
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if (skb->len > ndev->mtu + ETH_HLEN) {
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QPRINTK(qdev, DRV, ERR, "Segment too small, dropping.\n");
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rx_ring->rx_dropped++;
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goto err_out;
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}
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memcpy(skb_put(skb, ETH_HLEN), addr, ETH_HLEN);
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QPRINTK(qdev, RX_STATUS, DEBUG,
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"%d bytes of headers and data in large. Chain "
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"page to new skb and pull tail.\n", length);
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skb_fill_page_desc(skb, 0, lbq_desc->p.pg_chunk.page,
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lbq_desc->p.pg_chunk.offset+ETH_HLEN,
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length-ETH_HLEN);
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skb->len += length-ETH_HLEN;
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skb->data_len += length-ETH_HLEN;
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skb->truesize += length-ETH_HLEN;
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rx_ring->rx_packets++;
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rx_ring->rx_bytes += skb->len;
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skb->protocol = eth_type_trans(skb, ndev);
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skb->ip_summed = CHECKSUM_NONE;
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if (qdev->rx_csum &&
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!(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK)) {
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/* TCP frame. */
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if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) {
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QPRINTK(qdev, RX_STATUS, DEBUG,
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"TCP checksum done!\n");
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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} else if ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
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(ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_V4)) {
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/* Unfragmented ipv4 UDP frame. */
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struct iphdr *iph = (struct iphdr *) skb->data;
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if (!(iph->frag_off &
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cpu_to_be16(IP_MF|IP_OFFSET))) {
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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QPRINTK(qdev, RX_STATUS, DEBUG,
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"TCP checksum done!\n");
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}
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}
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}
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skb_record_rx_queue(skb, rx_ring->cq_id);
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if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
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if (qdev->vlgrp && (vlan_id != 0xffff))
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vlan_gro_receive(napi, qdev->vlgrp, vlan_id, skb);
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else
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napi_gro_receive(napi, skb);
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} else {
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if (qdev->vlgrp && (vlan_id != 0xffff))
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vlan_hwaccel_receive_skb(skb, qdev->vlgrp, vlan_id);
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else
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netif_receive_skb(skb);
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}
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return;
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err_out:
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dev_kfree_skb_any(skb);
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put_page(lbq_desc->p.pg_chunk.page);
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}
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/* Process an inbound completion from an rx ring. */
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static void ql_process_mac_rx_skb(struct ql_adapter *qdev,
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struct rx_ring *rx_ring,
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struct ib_mac_iocb_rsp *ib_mac_rsp,
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u32 length,
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u16 vlan_id)
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{
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struct net_device *ndev = qdev->ndev;
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struct sk_buff *skb = NULL;
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struct sk_buff *new_skb = NULL;
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struct bq_desc *sbq_desc = ql_get_curr_sbuf(rx_ring);
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skb = sbq_desc->p.skb;
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/* Allocate new_skb and copy */
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new_skb = netdev_alloc_skb(qdev->ndev, length + NET_IP_ALIGN);
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if (new_skb == NULL) {
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QPRINTK(qdev, PROBE, ERR,
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"No skb available, drop the packet.\n");
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rx_ring->rx_dropped++;
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return;
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}
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skb_reserve(new_skb, NET_IP_ALIGN);
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memcpy(skb_put(new_skb, length), skb->data, length);
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skb = new_skb;
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/* Frame error, so drop the packet. */
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if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
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QPRINTK(qdev, DRV, ERR, "Receive error, flags2 = 0x%x\n",
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ib_mac_rsp->flags2);
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dev_kfree_skb_any(skb);
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rx_ring->rx_errors++;
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return;
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}
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/* loopback self test for ethtool */
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if (test_bit(QL_SELFTEST, &qdev->flags)) {
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ql_check_lb_frame(qdev, skb);
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dev_kfree_skb_any(skb);
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return;
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}
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/* The max framesize filter on this chip is set higher than
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* MTU since FCoE uses 2k frames.
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*/
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if (skb->len > ndev->mtu + ETH_HLEN) {
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dev_kfree_skb_any(skb);
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rx_ring->rx_dropped++;
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return;
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}
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prefetch(skb->data);
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skb->dev = ndev;
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if (ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) {
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QPRINTK(qdev, RX_STATUS, DEBUG, "%s%s%s Multicast.\n",
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(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
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IB_MAC_IOCB_RSP_M_HASH ? "Hash" : "",
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(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
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IB_MAC_IOCB_RSP_M_REG ? "Registered" : "",
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(ib_mac_rsp->flags1 & IB_MAC_IOCB_RSP_M_MASK) ==
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IB_MAC_IOCB_RSP_M_PROM ? "Promiscuous" : "");
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}
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if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_P)
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QPRINTK(qdev, RX_STATUS, DEBUG, "Promiscuous Packet.\n");
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rx_ring->rx_packets++;
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rx_ring->rx_bytes += skb->len;
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skb->protocol = eth_type_trans(skb, ndev);
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skb->ip_summed = CHECKSUM_NONE;
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/* If rx checksum is on, and there are no
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* csum or frame errors.
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*/
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if (qdev->rx_csum &&
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!(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK)) {
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/* TCP frame. */
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if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T) {
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QPRINTK(qdev, RX_STATUS, DEBUG,
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"TCP checksum done!\n");
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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} else if ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_U) &&
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(ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_V4)) {
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/* Unfragmented ipv4 UDP frame. */
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struct iphdr *iph = (struct iphdr *) skb->data;
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if (!(iph->frag_off &
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cpu_to_be16(IP_MF|IP_OFFSET))) {
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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QPRINTK(qdev, RX_STATUS, DEBUG,
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"TCP checksum done!\n");
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}
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}
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}
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skb_record_rx_queue(skb, rx_ring->cq_id);
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if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
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if (qdev->vlgrp && (vlan_id != 0xffff))
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vlan_gro_receive(&rx_ring->napi, qdev->vlgrp,
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vlan_id, skb);
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else
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napi_gro_receive(&rx_ring->napi, skb);
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} else {
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if (qdev->vlgrp && (vlan_id != 0xffff))
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vlan_hwaccel_receive_skb(skb, qdev->vlgrp, vlan_id);
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else
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netif_receive_skb(skb);
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}
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}
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static void ql_realign_skb(struct sk_buff *skb, int len)
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{
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void *temp_addr = skb->data;
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@ -1646,14 +1849,13 @@ static struct sk_buff *ql_build_rx_skb(struct ql_adapter *qdev,
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}
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/* Process an inbound completion from an rx ring. */
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static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
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static void ql_process_mac_split_rx_intr(struct ql_adapter *qdev,
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struct rx_ring *rx_ring,
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struct ib_mac_iocb_rsp *ib_mac_rsp)
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struct ib_mac_iocb_rsp *ib_mac_rsp,
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u16 vlan_id)
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{
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struct net_device *ndev = qdev->ndev;
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struct sk_buff *skb = NULL;
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u16 vlan_id = (le16_to_cpu(ib_mac_rsp->vlan_id) &
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IB_MAC_IOCB_RSP_VLAN_MASK)
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QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
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@ -1753,6 +1955,57 @@ static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
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}
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}
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/* Process an inbound completion from an rx ring. */
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static unsigned long ql_process_mac_rx_intr(struct ql_adapter *qdev,
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struct rx_ring *rx_ring,
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struct ib_mac_iocb_rsp *ib_mac_rsp)
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{
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u32 length = le32_to_cpu(ib_mac_rsp->data_len);
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u16 vlan_id = (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) ?
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((le16_to_cpu(ib_mac_rsp->vlan_id) &
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IB_MAC_IOCB_RSP_VLAN_MASK)) : 0xffff;
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QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
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if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HV) {
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/* The data and headers are split into
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* separate buffers.
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*/
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ql_process_mac_split_rx_intr(qdev, rx_ring, ib_mac_rsp,
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vlan_id);
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} else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DS) {
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/* The data fit in a single small buffer.
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* Allocate a new skb, copy the data and
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* return the buffer to the free pool.
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*/
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ql_process_mac_rx_skb(qdev, rx_ring, ib_mac_rsp,
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length, vlan_id);
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} else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) {
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/* Non-TCP packet in a page chunk. Allocate an
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* skb, tack it on frags, and send it up.
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*/
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ql_process_mac_rx_page(qdev, rx_ring, ib_mac_rsp,
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length, vlan_id);
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} else {
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struct bq_desc *lbq_desc;
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/* Free small buffer that holds the IAL */
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lbq_desc = ql_get_curr_sbuf(rx_ring);
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QPRINTK(qdev, RX_ERR, ERR, "Dropping frame, len %d > mtu %d\n",
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length, qdev->ndev->mtu);
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/* Unwind the large buffers for this frame. */
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while (length > 0) {
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lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
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length -= (length < rx_ring->lbq_buf_size) ?
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length : rx_ring->lbq_buf_size;
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put_page(lbq_desc->p.pg_chunk.page);
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}
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}
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return (unsigned long)length;
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}
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/* Process an outbound completion from an rx ring. */
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static void ql_process_mac_tx_intr(struct ql_adapter *qdev,
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struct ob_mac_iocb_rsp *mac_rsp)
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