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authorDivy Le Ray <divy@chelsio.com>2010-02-08 22:37:24 -0800
committerDavid S. Miller <davem@davemloft.net>2010-02-08 22:37:24 -0800
commit2d171886b183982feb03446997c65e9e212b948e (patch)
tree34e88be6ca9b1fcd909957d0d3894b8d1c561f58
parent2fc1b5dd99f66d93ffc23fd8df82d384c1a354c8 (diff)
downloadlinux-linaro-stable-2d171886b183982feb03446997c65e9e212b948e.tar.gz
cxgb3: fix GRO checksum check
Verify the HW checksum state for frames handed to GRO processing. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/cxgb3/sge.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c
index bdbd14727e4b..318a018ca7c5 100644
--- a/drivers/net/cxgb3/sge.c
+++ b/drivers/net/cxgb3/sge.c
@@ -2079,6 +2079,7 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
struct sge_fl *fl, int len, int complete)
{
struct rx_sw_desc *sd = &fl->sdesc[fl->cidx];
+ struct port_info *pi = netdev_priv(qs->netdev);
struct sk_buff *skb = NULL;
struct cpl_rx_pkt *cpl;
struct skb_frag_struct *rx_frag;
@@ -2116,11 +2117,18 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
if (!nr_frags) {
offset = 2 + sizeof(struct cpl_rx_pkt);
- qs->lro_va = sd->pg_chunk.va + 2;
- }
- len -= offset;
+ cpl = qs->lro_va = sd->pg_chunk.va + 2;
- prefetch(qs->lro_va);
+ if ((pi->rx_offload & T3_RX_CSUM) &&
+ cpl->csum_valid && cpl->csum == htons(0xffff)) {
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ qs->port_stats[SGE_PSTAT_RX_CSUM_GOOD]++;
+ } else
+ skb->ip_summed = CHECKSUM_NONE;
+ } else
+ cpl = qs->lro_va;
+
+ len -= offset;
rx_frag += nr_frags;
rx_frag->page = sd->pg_chunk.page;
@@ -2136,12 +2144,8 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
return;
skb_record_rx_queue(skb, qs - &adap->sge.qs[0]);
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- cpl = qs->lro_va;
if (unlikely(cpl->vlan_valid)) {
- struct net_device *dev = qs->netdev;
- struct port_info *pi = netdev_priv(dev);
struct vlan_group *grp = pi->vlan_grp;
if (likely(grp != NULL)) {