lib: fix IPv6 tunnel checksum

When packet is flag of "PKT_TX_OUTER_IPV6", it also need to be
considered to be tunnel case, in order to calculate the correct
csum value.

Fixes: 2b76648872c9 ("net/e1000: add Tx preparation")
Cc: stable@dpdk.org
Signed-off-by: Jeff Guo <jia.guo@intel.com>

diff --git a/lib/librte_net/rte_net.h b/lib/librte_net/rte_net.h
index 548eaed..79c764a 100644 (file)
--- a/lib/librte_net/rte_net.h
+++ b/lib/librte_net/rte_net.h
@@ -120,7 +120,8 @@ rte_net_intel_cksum_flags_prepare(struct rte_mbuf *m, uint64_t ol_flags)
        struct udp_hdr *udp_hdr;
        uint64_t inner_l3_offset = m->l2_len;
 
-       if (ol_flags & PKT_TX_OUTER_IP_CKSUM)
+       if ((ol_flags & PKT_TX_OUTER_IP_CKSUM) ||
+               (ol_flags & PKT_TX_OUTER_IPV6))
                inner_l3_offset += m->outer_l2_len + m->outer_l3_len;
 
        if ((ol_flags & PKT_TX_UDP_CKSUM) == PKT_TX_UDP_CKSUM) {