[dpdk-dev] [PATCH] app/testpmd: fix mpls encap ipv4 version and ihl

[Saleh Alsouqi <salehals@mellanox.com>]

According to ietf rfc791 (see [1])

    "The Version field indicates the format of the
    internet header."

    "Internet Header Length (ihl) is the length of the
    internet header in 32 bit words, and thus points
    to the beginning of the data. Note that
    the minimum value for a correct header is 5."

Having version and ihl set to 0 would result in a
corrupted/incorrect encapsulating packet for MPLS,
this commit sets these fields to 4 and 5 respectively
as a default value.

[1] https://tools.ietf.org/html/rfc791

Fixes: 3e77031be855 ("app/testpmd: add MPLSoGRE encapsulation")
Fixes: a1191d39cb57 ("app/testpmd: add MPLSoUDP encapsulation")
Cc: stable@dpdk.org

Signed-off-by: Saleh Alsouqi <salehals@mellanox.com>
---
 app/test-pmd/cmdline_flow.c | 2 ++
 app/test-pmd/testpmd.h      | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index 5c0108f..c1c5fe3 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -3735,6 +3735,7 @@ static int comp_vc_action_rss_queue(struct context *, const struct token *,
 			.src_addr = mplsogre_encap_conf.ipv4_src,
 			.dst_addr = mplsogre_encap_conf.ipv4_dst,
 			.next_proto_id = IPPROTO_GRE,
+			.version_ihl = IPV4_VHL_DEF,
 		},
 	};
 	struct rte_flow_item_ipv6 ipv6 = {
@@ -3923,6 +3924,7 @@ static int comp_vc_action_rss_queue(struct context *, const struct token *,
 			.src_addr = mplsoudp_encap_conf.ipv4_src,
 			.dst_addr = mplsoudp_encap_conf.ipv4_dst,
 			.next_proto_id = IPPROTO_UDP,
+			.version_ihl = IPV4_VHL_DEF,
 		},
 	};
 	struct rte_flow_item_ipv6 ipv6 = {
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index 3ff11e6..8b0654f 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -22,6 +22,8 @@
 #define RTE_PORT_CLOSED         (uint16_t)2
 #define RTE_PORT_HANDLING       (uint16_t)3
 
+#define IPV4_VHL_DEF (0x40 | 0x5)
+
 /*
  * It is used to allocate the memory for hash key.
  * The hash key size is NIC dependent.
-- 
1.8.3.1