qlge: Add napi gro frags interface.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 53 insertions, 0 deletions

diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index 109bd0abe9b4..e9d6481ed9eb 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -1434,6 +1434,51 @@ map_error:
 }
 
 /* Process an inbound completion from an rx ring. */
+static void ql_process_mac_rx_gro_page(struct ql_adapter *qdev,
+                                        struct rx_ring *rx_ring,
+                                        struct ib_mac_iocb_rsp *ib_mac_rsp,
+                                        u32 length,
+                                        u16 vlan_id)
+{
+        struct sk_buff *skb;
+        struct bq_desc *lbq_desc = ql_get_curr_lchunk(qdev, rx_ring);
+        struct skb_frag_struct *rx_frag;
+        int nr_frags;
+        struct napi_struct *napi = &rx_ring->napi;
+
+        napi->dev = qdev->ndev;
+
+        skb = napi_get_frags(napi);
+        if (!skb) {
+                QPRINTK(qdev, DRV, ERR, "Couldn't get an skb, exiting.\n");
+                rx_ring->rx_dropped++;
+                put_page(lbq_desc->p.pg_chunk.page);
+                return;
+        }
+        prefetch(lbq_desc->p.pg_chunk.va);
+        rx_frag = skb_shinfo(skb)->frags;
+        nr_frags = skb_shinfo(skb)->nr_frags;
+        rx_frag += nr_frags;
+        rx_frag->page = lbq_desc->p.pg_chunk.page;
+        rx_frag->page_offset = lbq_desc->p.pg_chunk.offset;
+        rx_frag->size = length;
+
+        skb->len += length;
+        skb->data_len += length;
+        skb->truesize += length;
+        skb_shinfo(skb)->nr_frags++;
+
+        rx_ring->rx_packets++;
+        rx_ring->rx_bytes += length;
+        skb->ip_summed = CHECKSUM_UNNECESSARY;
+        skb_record_rx_queue(skb, rx_ring->cq_id);
+        if (qdev->vlgrp && (vlan_id != 0xffff))
+                vlan_gro_frags(&rx_ring->napi, qdev->vlgrp, vlan_id);
+        else
+                napi_gro_frags(napi);
+}
+
+/* Process an inbound completion from an rx ring. */
 static void ql_process_mac_rx_page(struct ql_adapter *qdev,
                                         struct rx_ring *rx_ring,
                                         struct ib_mac_iocb_rsp *ib_mac_rsp,
@@ -1980,6 +2025,14 @@ static unsigned long ql_process_mac_rx_intr(struct ql_adapter *qdev,
                  */
                 ql_process_mac_rx_skb(qdev, rx_ring, ib_mac_rsp,
                                                 length, vlan_id);
+        } else if ((ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) &&
+                !(ib_mac_rsp->flags1 & IB_MAC_CSUM_ERR_MASK) &&
+                (ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_T)) {
+                /* TCP packet in a page chunk that's been checksummed.
+                 * Tack it on to our GRO skb and let it go.
+                 */
+                ql_process_mac_rx_gro_page(qdev, rx_ring, ib_mac_rsp,
+                                                length, vlan_id);
         } else if (ib_mac_rsp->flags3 & IB_MAC_IOCB_RSP_DL) {
                 /* Non-TCP packet in a page chunk. Allocate an
                  * skb, tack it on frags, and send it up.