qede: fix offload for IPIP tunnel packets

[ Upstream commit 5d5647dad259bb416fd5d3d87012760386d97530 ]

IPIP tunnels packets are unknown to device,
hence these packets are incorrectly parsed and
caused the packet corruption, so disable offlods
for such packets at run time.

Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Sudarsana Kalluru <skalluru@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Link: https://lore.kernel.org/r/20201221145530.7771-1-manishc@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/qlogic/qede/qede_fp.c b/drivers/net/ethernet/qlogic/qede/qede_fp.c
index a2494bf..ca0ee29 100644 (file)
--- a/drivers/net/ethernet/qlogic/qede/qede_fp.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_fp.c
@@ -1799,6 +1799,11 @@ netdev_features_t qede_features_check(struct sk_buff *skb,
                              ntohs(udp_hdr(skb)->dest) != gnv_port))
                                return features & ~(NETIF_F_CSUM_MASK |
                                                    NETIF_F_GSO_MASK);
+               } else if (l4_proto == IPPROTO_IPIP) {
+                       /* IPIP tunnels are unknown to the device or at least unsupported natively,
+                        * offloads for them can't be done trivially, so disable them for such skb.
+                        */
+                       return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
                }
        }