[PATCH net-next 1/6] enic: Check inner ip proto for pseudo header csum
flat view
STALE3147d
From: Govindarajulu Varadarajan <hidden>
Date: 2018-03-02 02:21:02
Subsystem:
cisco vic ethernet nic driver, networking drivers, the rest · Maintainers:
Satish Kharat, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
To compute pseudo IP header csum, we need to check the inner header for encap pkt, not outer IP header. Also add pseudo csum for IPv6 inner pkt. Signed-off-by: Govindarajulu Varadarajan <redacted> --- drivers/net/ethernet/cisco/enic/enic_main.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index f202ba72a811..252285894968 100644
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c@@ -635,12 +635,25 @@ static int enic_queue_wq_skb_csum_l4(struct enic *enic, struct vnic_wq *wq, static void enic_preload_tcp_csum_encap(struct sk_buff *skb) { - if (skb->protocol == cpu_to_be16(ETH_P_IP)) { + const struct ethhdr *eth = (struct ethhdr *)skb_inner_mac_header(skb); + + switch (eth->h_proto) { + case ntohs(ETH_P_IP): inner_ip_hdr(skb)->check = 0; inner_tcp_hdr(skb)->check = ~csum_tcpudp_magic(inner_ip_hdr(skb)->saddr, inner_ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0); + break; + case ntohs(ETH_P_IPV6): + inner_tcp_hdr(skb)->check = + ~csum_ipv6_magic(&inner_ipv6_hdr(skb)->saddr, + &inner_ipv6_hdr(skb)->daddr, 0, + IPPROTO_TCP, 0); + break; + default: + WARN_ONCE(1, "Non ipv4/ipv6 inner pkt for encap offload"); + break; } }
--
2.16.2