qlge: Fix receive path to drop error frames

o Fix the driver to drop error frames in the receive path
o Update error counter which was not getting incremented

Signed-off-by: Sritej Velaga <sritej.velaga@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
index b13ab54..8033555 100644 (file)
--- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c
+++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
@@ -1434,11 +1434,13 @@ map_error:
 }
 
 /* Categorizing receive firmware frame errors */
-static void ql_categorize_rx_err(struct ql_adapter *qdev, u8 rx_err)
+static void ql_categorize_rx_err(struct ql_adapter *qdev, u8 rx_err,
+                                struct rx_ring *rx_ring)
 {
        struct nic_stats *stats = &qdev->nic_stats;
 
        stats->rx_err_count++;
+       rx_ring->rx_errors++;
 
        switch (rx_err & IB_MAC_IOCB_RSP_ERR_MASK) {
        case IB_MAC_IOCB_RSP_ERR_CODE_ERR:
@@ -1474,6 +1476,12 @@ static void ql_process_mac_rx_gro_page(struct ql_adapter *qdev,
        struct bq_desc *lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
        struct napi_struct *napi = &rx_ring->napi;
 
+       /* Frame error, so drop the packet. */
+       if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
+               ql_categorize_rx_err(qdev, ib_mac_rsp->flags2, rx_ring);
+               put_page(lbq_desc->p.pg_chunk.page);
+               return;
+       }
        napi->dev = qdev->ndev;
 
        skb = napi_get_frags(napi);
@@ -1529,6 +1537,12 @@ static void ql_process_mac_rx_page(struct ql_adapter *qdev,
        addr = lbq_desc->p.pg_chunk.va;
        prefetch(addr);
 
+       /* Frame error, so drop the packet. */
+       if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
+               ql_categorize_rx_err(qdev, ib_mac_rsp->flags2, rx_ring);
+               goto err_out;
+       }
+
        /* The max framesize filter on this chip is set higher than
         * MTU since FCoE uses 2k frames.
         */
@@ -1614,6 +1628,13 @@ static void ql_process_mac_rx_skb(struct ql_adapter *qdev,
        memcpy(skb_put(new_skb, length), skb->data, length);
        skb = new_skb;
 
+       /* Frame error, so drop the packet. */
+       if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
+               ql_categorize_rx_err(qdev, ib_mac_rsp->flags2, rx_ring);
+               dev_kfree_skb_any(skb);
+               return;
+       }
+
        /* loopback self test for ethtool */
        if (test_bit(QL_SELFTEST, &qdev->flags)) {
                ql_check_lb_frame(qdev, skb);
@@ -1919,6 +1940,13 @@ static void ql_process_mac_split_rx_intr(struct ql_adapter *qdev,
                return;
        }
 
+       /* Frame error, so drop the packet. */
+       if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
+               ql_categorize_rx_err(qdev, ib_mac_rsp->flags2, rx_ring);
+               dev_kfree_skb_any(skb);
+               return;
+       }
+
        /* The max framesize filter on this chip is set higher than
         * MTU since FCoE uses 2k frames.
         */
@@ -2000,12 +2028,6 @@ static unsigned long ql_process_mac_rx_intr(struct ql_adapter *qdev,
 
        QL_DUMP_IB_MAC_RSP(ib_mac_rsp);
 
-       /* Frame error, so drop the packet. */
-       if (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_ERR_MASK) {
-               ql_categorize_rx_err(qdev, ib_mac_rsp->flags2);
-               return (unsigned long)length;
-       }
-
        if (ib_mac_rsp->flags4 & IB_MAC_IOCB_RSP_HV) {
                /* The data and headers are split into
                 * separate buffers.