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authorRaju Rangoju <rajur@chelsio.com>2017-05-31 08:36:58 +0200
committerDoug Ledford <dledford@redhat.com>2017-06-01 23:03:02 +0200
commit98b80a2a73a26f0e259632da519ccedb0cf37617 (patch)
treeb8f889dc657525cfd23376c967bdce605b40675f /drivers/infiniband/hw/cxgb4
parentRDMA/iw_cxgb4: calculate t4_eq_status_entries properly (diff)
downloadlinux-98b80a2a73a26f0e259632da519ccedb0cf37617.tar.xz
linux-98b80a2a73a26f0e259632da519ccedb0cf37617.zip
RDMA/iw_cxgb4: fix the calculation of ipv6 header size
Take care of ipv6 checks while computing header length for deducing mtu size of ipv6 servers. Due to the incorrect header length computation for ipv6 servers, wrong mss is reported to the peer (client). Signed-off-by: Raju Rangoju <rajur@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Acked-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4')
-rw-r--r--drivers/infiniband/hw/cxgb4/cm.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 06b110213e92..0910faf3587b 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -2521,7 +2521,8 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
goto reject;
}
- hdrs = sizeof(struct iphdr) + sizeof(struct tcphdr) +
+ hdrs = ((iptype == 4) ? sizeof(struct iphdr) : sizeof(struct ipv6hdr)) +
+ sizeof(struct tcphdr) +
((enable_tcp_timestamps && req->tcpopt.tstamp) ? 12 : 0);
if (peer_mss && child_ep->mtu > (peer_mss + hdrs))
child_ep->mtu = peer_mss + hdrs;