[dpdk-dev] [PATCH] net: fix encapsulation markers for inner L3 offset

Ivan Malov ivan.malov at oktetlabs.ru
Fri May 24 16:57:14 CEST 2019

The API to prepare checksum offloads employs outer
IP checksum flag to tell regular IPv4 packets from
tunnel packets with outer IPv4 encapsulation. This
flag cannot serve as a marker for the said purpose
because a packet can have outer IPv4 encapsulation
and may not have outer IP checksum offload request.

Fix the API by changing the said criterion to test
outer IPv4 flag rather than outer IP checksum flag.
Use simpler spelling of the conditional expression.

Fixes: 4fb7e803eb1a ("ethdev: add Tx preparation")
Cc: Tomasz Kulasek <tomaszx.kulasek at intel.com>
Cc: stable at dpdk.org

Signed-off-by: Ivan Malov <ivan.malov at oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <arybchenko at solarflare.com>
 lib/librte_net/rte_net.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/librte_net/rte_net.h b/lib/librte_net/rte_net.h
index 1697071..c15b518 100644
--- a/lib/librte_net/rte_net.h
+++ b/lib/librte_net/rte_net.h
@@ -128,8 +128,7 @@ uint32_t rte_net_get_ptype(const struct rte_mbuf *m,
 		return 0;
-	if ((ol_flags & PKT_TX_OUTER_IP_CKSUM) ||
-		(ol_flags & 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;

More information about the dev mailing list