FW: [PATCH v2] examples/ip_fragmentation: fix check of packet type

---
 examples/ip_fragmentation/main.c | 74
++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/examples/ip_fragmentation/main.c

b/examples/ip_fragmentation/main.c
index 9e9ecae..151f059 100644

--- a/examples/ip_fragmentation/main.c
+++ b/examples/ip_fragmentation/main.c

@@ -653,6 +653,74 @@ check_all_ports_link_status(uint8_t port_num, 

uint32_t port_mask)
 	}
 }

+/* Check L3 packet type detection capablity of the NIC port */ static 
+int check_ptype(int portid) {
+	int i, ret;
+	int ptype_l3_ipv4 = 0, ptype_l3_ipv6 = 0;
+	uint32_t ptype_mask = RTE_PTYPE_L3_MASK;
+
+	ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, NULL, 0);
+	if (ret <= 0)
+		return 0;
+
+	uint32_t ptypes[ret];
+
+	ret = rte_eth_dev_get_supported_ptypes(portid, ptype_mask, ptypes,
ret);
+	for (i = 0; i < ret; ++i) {
+		if (ptypes[i] & RTE_PTYPE_L3_IPV4)
+			ptype_l3_ipv4 = 1;
+		if (ptypes[i] & RTE_PTYPE_L3_IPV6)
+			ptype_l3_ipv6 = 1;
+	}
+
+	if (ptype_l3_ipv4 == 0)
+		printf("port %d cannot parse RTE_PTYPE_L3_IPV4\n", portid);
+
+	if (ptype_l3_ipv6 == 0)
+		printf("port %d cannot parse RTE_PTYPE_L3_IPV6\n", portid);
+
+	if (ptype_l3_ipv4 && ptype_l3_ipv6)
+		return 1;
+
+	return 0;
+
+}
+
+/* Parse packet type of a packet by SW */ static inline void 
+parse_ptype(struct rte_mbuf *m) {
+	struct ether_hdr *eth_hdr;
+	uint32_t packet_type = RTE_PTYPE_UNKNOWN;
+	uint16_t ether_type;
+
+	eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
+	ether_type = eth_hdr->ether_type;
+	if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv4))
+		packet_type |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
+	else if (ether_type == rte_cpu_to_be_16(ETHER_TYPE_IPv6))
+		packet_type |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
+
+	m->packet_type = packet_type;
+}
+
+/* callback function to detect packet type for a queue of a port */ 
+static uint16_t cb_parse_ptype(uint8_t port __rte_unused, uint16_t 
+queue __rte_unused,
+		   struct rte_mbuf *pkts[], uint16_t nb_pkts,
+		   uint16_t max_pkts __rte_unused,
+		   void *user_param __rte_unused)
+{
+	uint16_t i;
+
+	for (i = 0; i < nb_pkts; ++i)
+		parse_ptype(pkts[i]);
+
+	return nb_pkts;
+}
+
 static int
 init_routing_table(void)
 {

@@ -944,6 +1012,12 @@ main(int argc, char **argv)
 				ret, portid);

 		rte_eth_promiscuous_enable(portid);
+
+		if (check_ptype(portid) == 0) {
+			rte_eth_add_rx_callback(portid, 0, cb_parse_ptype, NULL);
+			printf("Add Rx callback funciton to detect L3 packet type by

SW :"
+				" port = %d\n", portid);
+		}
 	}

 	if (init_routing_table() < 0)
--
2.7.4