app/testpmd: add IP length field matching

Added support of parsing IPv4 total length and IPv6 payload length
in the command line. The value of L3 length can be passed to the
rte_flow API for testing.

Signed-off-by: Bing Zhao <bingz@nvidia.com>
Acked-by: Ori Kam <orika@nvidia.com>

app/test-pmd/cmdline_flow.c

@@ -317,6 +317,7 @@ enum index {
 	ITEM_IPV4,
 	ITEM_IPV4_VER_IHL,
 	ITEM_IPV4_TOS,
+	ITEM_IPV4_LENGTH,
 	ITEM_IPV4_ID,
 	ITEM_IPV4_FRAGMENT_OFFSET,
 	ITEM_IPV4_TTL,
@@ -326,6 +327,7 @@ enum index {
 	ITEM_IPV6,
 	ITEM_IPV6_TC,
 	ITEM_IPV6_FLOW,
+	ITEM_IPV6_LEN,
 	ITEM_IPV6_PROTO,
 	ITEM_IPV6_HOP,
 	ITEM_IPV6_SRC,
@@ -1621,6 +1623,7 @@ static const enum index item_vlan[] = {
 static const enum index item_ipv4[] = {
 	ITEM_IPV4_VER_IHL,
 	ITEM_IPV4_TOS,
+	ITEM_IPV4_LENGTH,
 	ITEM_IPV4_ID,
 	ITEM_IPV4_FRAGMENT_OFFSET,
 	ITEM_IPV4_TTL,
@@ -1634,6 +1637,7 @@ static const enum index item_ipv4[] = {
 static const enum index item_ipv6[] = {
 	ITEM_IPV6_TC,
 	ITEM_IPV6_FLOW,
+	ITEM_IPV6_LEN,
 	ITEM_IPV6_PROTO,
 	ITEM_IPV6_HOP,
 	ITEM_IPV6_SRC,
@@ -4270,6 +4274,14 @@ static const struct token token_list[] = {
 		.args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv4,
 					     hdr.type_of_service)),
 	},
+	[ITEM_IPV4_LENGTH] = {
+		.name = "length",
+		.help = "total length",
+		.next = NEXT(item_ipv4, NEXT_ENTRY(COMMON_UNSIGNED),
+			     item_param),
+		.args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv4,
+					     hdr.total_length)),
+	},
 	[ITEM_IPV4_ID] = {
 		.name = "packet_id",
 		.help = "fragment packet id",
@@ -4343,6 +4355,14 @@ static const struct token token_list[] = {
 						  hdr.vtc_flow,
 						  "\x00\x0f\xff\xff")),
 	},
+	[ITEM_IPV6_LEN] = {
+		.name = "length",
+		.help = "payload length",
+		.next = NEXT(item_ipv6, NEXT_ENTRY(COMMON_UNSIGNED),
+			     item_param),
+		.args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_ipv6,
+					     hdr.payload_len)),
+	},
 	[ITEM_IPV6_PROTO] = {
 		.name = "proto",
 		.help = "protocol (next header)",