[PATCH v2] app/testpmd: set srv6 header without any TLV

[Rongwei Liu <rongweil@nvidia.com>]

When the type field of the IPv6 routing extension is 4, it means
segment routing header.

In this case, set the last_entry to be segment_left minus 1 if the
user doesn't specify the header length explicitly.

Signed-off-by: Rongwei Liu <rongweil@nvidia.com>

v2: add macro definition for segment routing header.
---
 app/test-pmd/cmdline_flow.c | 3 +++
 lib/net/rte_ip.h            | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index 5fbc450849..09f417b76e 100644
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -12817,6 +12817,9 @@ cmd_set_raw_parsed(const struct buffer *in)
 				size = sizeof(struct rte_ipv6_routing_ext) +
 					(ext->hdr.segments_left << 4);
 				ext->hdr.hdr_len = ext->hdr.segments_left << 1;
+				/* Srv6 without TLV. */
+				if (ext->hdr.type == RTE_IPV6_SRCRT_TYPE_4)
+					ext->hdr.last_entry = ext->hdr.segments_left - 1;
 			} else {
 				size = sizeof(struct rte_ipv6_routing_ext) +
 					(ext->hdr.hdr_len << 3);
diff --git a/lib/net/rte_ip.h b/lib/net/rte_ip.h
index 337fad15d7..cfdbfb86ba 100644
--- a/lib/net/rte_ip.h
+++ b/lib/net/rte_ip.h
@@ -540,6 +540,9 @@ struct rte_ipv6_hdr {
 	uint8_t  dst_addr[16];	/**< IP address of destination host(s). */
 } __rte_packed;
 
+/* IPv6 routing extension type definition. */
+#define RTE_IPV6_SRCRT_TYPE_4 4
+
 /**
  * IPv6 Routing Extension Header
  */
-- 
2.27.0