This is a note to let you know that I've just added the patch titled

net: thunderx: Fix TCP/UDP checksum offload for IPv6 pkts

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: net-thunderx-fix-tcp-udp-checksum-offload-for-ipv6-pkts.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Thu Dec 14 11:45:40 CET 2017

From: Sunil Goutham sgoutham@cavium.com Date: Thu, 23 Nov 2017 22:34:31 +0300 Subject: net: thunderx: Fix TCP/UDP checksum offload for IPv6 pkts

From: Sunil Goutham sgoutham@cavium.com

[ Upstream commit fa6d7cb5d76cf0467c61420fc9238045aedfd379 ]

Don't offload IP header checksum to NIC.

This fixes a previous patch which enabled checksum offloading for both IPv4 and IPv6 packets. So L3 checksum offload was getting enabled for IPv6 pkts. And HW is dropping these pkts as it assumes the pkt is IPv4 when IP csum offload is set in the SQ descriptor.

Fixes: 3a9024f52c2e ("net: thunderx: Enable TSO and checksum offloads for ipv6") Signed-off-by: Sunil Goutham sgoutham@cavium.com Signed-off-by: Aleksey Makarov aleksey.makarov@auriga.com Reviewed-by: Eric Dumazet edumazet@google.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 1 - 1 file changed, 1 deletion(-)

--- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c @@ -1355,7 +1355,6 @@ nicvf_sq_add_hdr_subdesc(struct nicvf *n

/* Offload checksum calculation to HW */ if (skb->ip_summed == CHECKSUM_PARTIAL) { - hdr->csum_l3 = 1; /* Enable IP csum calculation */ hdr->l3_offset = skb_network_offset(skb); hdr->l4_offset = skb_transport_offset(skb);

Patches currently in stable-queue which might be from sgoutham@cavium.com are

queue-4.14/net-thunderx-fix-tcp-udp-checksum-offload-for-ipv6-pkts.patch queue-4.14/net-thunderx-fix-tcp-udp-checksum-offload-for-ipv4-pkts.patch