net: prepare the outer ipv4 hdr for checksum
Checks
Commit Message
Preparation the headers for the hardware offload
misses the outer ipv4 checksum offload.
It results in bad checksum computed by hardware NIC.
This patch fixes the issue by setting the outer ipv4
checksum field to 0.
Cc: ray.kinsella@intel.com
Signed-off-by: Mohsin Kazmi <mohsin.kazmi14@gmail.com>
---
lib/net/rte_net.h | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
@@ -128,8 +128,18 @@ rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags)
if (!(ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK | PKT_TX_TCP_SEG)))
return 0;
- if (ol_flags & (PKT_TX_OUTER_IPV4 | PKT_TX_OUTER_IPV6))
+ if (ol_flags & (PKT_TX_OUTER_IPV4 | PKT_TX_OUTER_IPV6)) {
inner_l3_offset += m->outer_l2_len + m->outer_l3_len;
+ /*
+ * prepare outer ipv4 header checksum by setting it to 0,
+ * in order to be computed by hardware NICs.
+ */
+ if (ol_flags & PKT_TX_OUTER_IP_CKSUM) {
+ ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct rte_ipv4_hdr *,
+ m->outer_l2_len);
+ ipv4_hdr->hdr_checksum = 0;
+ }
+ }
/*
* Check if headers are fragmented.