[dpdk-dev] [PATCH 1/4] net/tap: fix Rx cksum flags on IP options packets
Olivier Matz
olivier.matz at 6wind.com
Tue Apr 27 15:57:52 CEST 2021
When packet type is IPV4_EXT, the checksum is always marked as good in
the mbuf offload flags.
Since we know the header lengths, we can easily call
rte_ipv4_udptcp_cksum() in this case too.
Fixes: 8ae3023387e9 ("net/tap: add Rx/Tx checksum offload support")
Cc: stable at dpdk.org
Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
---
drivers/net/tap/rte_eth_tap.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index 68baa18523..e7b185a4b5 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -350,7 +350,7 @@ tap_verify_csum(struct rte_mbuf *mbuf)
/* Don't verify checksum for multi-segment packets. */
if (mbuf->nb_segs > 1)
return;
- if (l3 == RTE_PTYPE_L3_IPV4) {
+ if (l3 == RTE_PTYPE_L3_IPV4 || l3 == RTE_PTYPE_L3_IPV4_EXT) {
if (l4 == RTE_PTYPE_L4_UDP) {
udp_hdr = (struct rte_udp_hdr *)l4_hdr;
if (udp_hdr->dgram_cksum == 0) {
@@ -364,7 +364,7 @@ tap_verify_csum(struct rte_mbuf *mbuf)
}
}
cksum = ~rte_ipv4_udptcp_cksum(l3_hdr, l4_hdr);
- } else if (l3 == RTE_PTYPE_L3_IPV6) {
+ } else { /* l3 == RTE_PTYPE_L3_IPV6, checked above */
cksum = ~rte_ipv6_udptcp_cksum(l3_hdr, l4_hdr);
}
mbuf->ol_flags |= cksum ?
--
2.29.2
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