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net: ixgbe: use skb_csum_is_sctp instead of protocol check 

Using skb_csum_is_sctp is a easier way to validate it's a SCTP CRC
checksum offload packet, and yet it also makes ixgbe support SCTP
CRC checksum offload for UDP and GRE encapped packets, just as it
does in igb driver.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Xin Long 2021-01-16 14:13:41 +08:00 committed by Jakub Kicinski
parent 609d29a9d2
commit f8c4b01d3a
1 changed files with 1 additions and 13 deletions
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14
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@ -8039,15 +8039,6 @@ static int ixgbe_tso(struct ixgbe_ring *tx_ring,
return 1;
}
static inline bool ixgbe_ipv6_csum_is_sctp(struct sk_buff *skb)
{
unsigned int offset = 0;
ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL);
return offset == skb_checksum_start_offset(skb);
}
static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring,
struct ixgbe_tx_buffer *first,
struct ixgbe_ipsec_tx_data *itd)
@ -8073,10 +8064,7 @@ csum_failed:
break;
case offsetof(struct sctphdr, checksum):
/* validate that this is actually an SCTP request */
if (((first->protocol == htons(ETH_P_IP)) &&
(ip_hdr(skb)->protocol == IPPROTO_SCTP)) ||
((first->protocol == htons(ETH_P_IPV6)) &&
ixgbe_ipv6_csum_is_sctp(skb))) {
if (skb_csum_is_sctp(skb)) {
type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_SCTP;
break;
}