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authorDimitris Michailidis <dm@chelsio.com>2010-08-02 17:19:17 +0400
committerDavid S. Miller <davem@davemloft.net>2010-08-03 03:26:41 +0400
commitba5d3c66e02c3dac66a386b6af0dc9687a4dba67 (patch)
tree8193d85ea620f7322f1aeacfa2754fa7ff285fd5 /drivers/net/cxgb4
parent63bcceec6e3ba8ffe0e2a0bec75afcdf6403165c (diff)
downloadlinux-ba5d3c66e02c3dac66a386b6af0dc9687a4dba67.tar.xz
cxgb4: don't offload Rx checksums for IPv6 fragments
The checksum provided by the device doesn't include the L3 headers, as IPv6 expects. Signed-off-by: Dimitris Michailidis <dm@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/cxgb4')
-rw-r--r--drivers/net/cxgb4/sge.c7
-rw-r--r--drivers/net/cxgb4/t4_msg.h2
2 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/cxgb4/sge.c b/drivers/net/cxgb4/sge.c
index 4388f72d586a..304302a71dbc 100644
--- a/drivers/net/cxgb4/sge.c
+++ b/drivers/net/cxgb4/sge.c
@@ -1593,14 +1593,15 @@ int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp,
if (csum_ok && (pi->rx_offload & RX_CSO) &&
(pkt->l2info & htonl(RXF_UDP | RXF_TCP))) {
- if (!pkt->ip_frag)
+ if (!pkt->ip_frag) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
- else {
+ rxq->stats.rx_cso++;
+ } else if (pkt->l2info & htonl(RXF_IP)) {
__sum16 c = (__force __sum16)pkt->csum;
skb->csum = csum_unfold(c);
skb->ip_summed = CHECKSUM_COMPLETE;
+ rxq->stats.rx_cso++;
}
- rxq->stats.rx_cso++;
} else
skb->ip_summed = CHECKSUM_NONE;
diff --git a/drivers/net/cxgb4/t4_msg.h b/drivers/net/cxgb4/t4_msg.h
index 623932b39b5d..a550d0c706f3 100644
--- a/drivers/net/cxgb4/t4_msg.h
+++ b/drivers/net/cxgb4/t4_msg.h
@@ -529,6 +529,8 @@ struct cpl_rx_pkt {
__be32 l2info;
#define RXF_UDP (1 << 22)
#define RXF_TCP (1 << 23)
+#define RXF_IP (1 << 24)
+#define RXF_IP6 (1 << 25)
__be16 hdr_len;
__be16 err_vec;
};