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net: igbvf: 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 igbvf 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 14:13:39 +08:00 committed by Jakub Kicinski
parent 8bcf02035b
commit d2de44443c
1 changed files with 1 additions and 13 deletions
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14
drivers/net/ethernet/intel/igbvf/netdev.c
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@ -2072,15 +2072,6 @@ static int igbvf_tso(struct igbvf_ring *tx_ring,
return 1; return 1;
} }
static inline bool igbvf_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 bool igbvf_tx_csum(struct igbvf_ring *tx_ring, struct sk_buff *skb, static bool igbvf_tx_csum(struct igbvf_ring *tx_ring, struct sk_buff *skb,
u32 tx_flags, __be16 protocol) u32 tx_flags, __be16 protocol)
{ {
@ -2102,10 +2093,7 @@ csum_failed:
break; break;
case offsetof(struct sctphdr, checksum): case offsetof(struct sctphdr, checksum):
/* validate that this is actually an SCTP request */ /* validate that this is actually an SCTP request */
if (((protocol == htons(ETH_P_IP)) && if (skb_csum_is_sctp(skb)) {
(ip_hdr(skb)->protocol == IPPROTO_SCTP)) ||
((protocol == htons(ETH_P_IPV6)) &&
igbvf_ipv6_csum_is_sctp(skb))) {
type_tucmd = E1000_ADVTXD_TUCMD_L4T_SCTP; type_tucmd = E1000_ADVTXD_TUCMD_L4T_SCTP;
break; break;
} }