[dpdk-dev] [PATCH v2] examples: fix ip_reassembly not work with some NICs

[Yong Liu]

Some network device drivers like Fortville may not fill packet type by
default. Changed the method for detecting packet type from mbuf packet
type to ethernet header MAC type will make sure this example compatible
with all NICs.

Fixes: b84fb4cb88ff ("examples/ip_reassembly: overhaul")

v2:
* fix code style issue

Signed-off-by: Yong Liu <yong.liu at intel.com>

diff --git a/examples/ip_reassembly/main.c b/examples/ip_reassembly/main.c
index 50fe422..974fabc 100644
--- a/examples/ip_reassembly/main.c
+++ b/examples/ip_reassembly/main.c
@@ -356,7 +356,7 @@ struct rte_lpm6_config lpm6_config = {
 	dst_port = portid;
 
 	/* if packet is IPv4 */
-	if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
+	if (eth_hdr->ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4)) {
 		struct ipv4_hdr *ip_hdr;
 		uint32_t ip_dst;
 
@@ -395,8 +395,7 @@ struct rte_lpm6_config lpm6_config = {
 			dst_port = next_hop_ipv4;
 		}
 
-		eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv4);
-	} else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
+	} else if (eth_hdr->ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6)) {
 		/* if packet is IPv6 */
 		struct ipv6_extension_fragment *frag_hdr;
 		struct ipv6_hdr *ip_hdr;
@@ -431,8 +430,6 @@ struct rte_lpm6_config lpm6_config = {
 				(enabled_port_mask & 1 << next_hop_ipv6) != 0) {
 			dst_port = next_hop_ipv6;
 		}
-
-		eth_hdr->ether_type = rte_be_to_cpu_16(ETHER_TYPE_IPv6);
 	}
 	/* if packet wasn't IPv4 or IPv6, it's forwarded to the port it came from */
 
-- 
1.9.3