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Commit 98b80a2a authored by Raju Rangoju's avatar Raju Rangoju Committed by Doug Ledford
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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: default avatarRaju Rangoju <rajur@chelsio.com>
Signed-off-by: default avatarGanesh Goudar <ganeshgr@chelsio.com>
Acked-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 4bbfabed

drivers/infiniband/hw/cxgb4/cm.c

+2 −1
Original line number Diff line number Diff line
@@ -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;