releases/4.14.110/net-aquantia-fix-rx-checksum-offload-for-udp-tcp-over-ipv6.patch

   1 From foo@baz Thu Mar 28 21:57:57 CET 2019
   2 From: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
   3 Date: Sat, 16 Mar 2019 08:28:18 +0000
   4 Subject: net: aquantia: fix rx checksum offload for UDP/TCP over IPv6
   5
   6 From: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
   7
   8 [ Upstream commit a7faaa0c5dc7d091cc9f72b870d7edcdd6f43f12 ]
   9
  10 TCP/UDP checksum validity was propagated to skb
  11 only if IP checksum is valid.
  12 But for IPv6 there is no validity as there is no checksum in IPv6.
  13 This patch propagates TCP/UDP checksum validity regardless of IP checksum.
  14
  15 Fixes: 018423e90bee ("net: ethernet: aquantia: Add ring support code")
  16 Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
  17 Signed-off-by: Nikita Danilov <nikita.danilov@aquantia.com>
  18 Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
  19 Signed-off-by: David S. Miller <davem@davemloft.net>
  20 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  21 ---
  22  drivers/net/ethernet/aquantia/atlantic/aq_ring.c |    5 +++--
  23  1 file changed, 3 insertions(+), 2 deletions(-)
  24
  25 --- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
  26 +++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
  27 @@ -270,11 +270,12 @@ int aq_ring_rx_clean(struct aq_ring_s *s
  28                 } else {
  29                         if (buff->is_ip_cso) {
  30                                 __skb_incr_checksum_unnecessary(skb);
  31 -                               if (buff->is_udp_cso || buff->is_tcp_cso)
  32 -                                       __skb_incr_checksum_unnecessary(skb);
  33                         } else {
  34                                 skb->ip_summed = CHECKSUM_NONE;
  35                         }
  36 +
  37 +                       if (buff->is_udp_cso || buff->is_tcp_cso)
  38 +                               __skb_incr_checksum_unnecessary(skb);
  39                 }
  40
  41                 skb_set_hash(skb, buff->rss_hash,