[PATCH dpdk v2] net: add more icmp types and code

[Robin Jarry]

Add more ICMP message types and codes based on RFC 792. Change the
namespace prefix from RTE_IP_ICMP_ to RTE_ICMP_ to allow differentiation
between types and codes.

Do not include deprecated message types as described in RFC 6918.

Link: https://www.rfc-editor.org/rfc/rfc792
Link: https://www.rfc-editor.org/rfc/rfc6918
Signed-off-by: Robin Jarry <rjarry at redhat.com>
Acked-by: Stephen Hemminger <stephen at networkplumber.org>
Acked-by: Ferruh Yigit <ferruh.yigit at amd.com>
---

Notes:
    v2: added release note

 app/test-pmd/icmpecho.c                | 10 ++++----
 doc/guides/rel_notes/release_24_11.rst |  6 +++++
 lib/net/rte_icmp.h                     | 33 ++++++++++++++++++++++++--
 3 files changed, 42 insertions(+), 7 deletions(-)

diff --git a/app/test-pmd/icmpecho.c b/app/test-pmd/icmpecho.c
index 68524484e305..4ef23ae67ac4 100644
--- a/app/test-pmd/icmpecho.c
+++ b/app/test-pmd/icmpecho.c
@@ -416,7 +416,7 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs)
 		icmp_h = (struct rte_icmp_hdr *) ((char *)ip_h +
 					      sizeof(struct rte_ipv4_hdr));
 		if (! ((ip_h->next_proto_id == IPPROTO_ICMP) &&
-		       (icmp_h->icmp_type == RTE_IP_ICMP_ECHO_REQUEST) &&
+		       (icmp_h->icmp_type == RTE_ICMP_TYPE_ECHO_REQUEST) &&
 		       (icmp_h->icmp_code == 0))) {
 			rte_pktmbuf_free(pkt);
 			continue;
@@ -440,7 +440,7 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs)
 		 *     - switch the request IP source and destination
 		 *       addresses in the reply IP header,
 		 *     - keep the IP header checksum unchanged.
-		 * - set RTE_IP_ICMP_ECHO_REPLY in ICMP header.
+		 * - set RTE_ICMP_TYPE_ECHO_REPLY in ICMP header.
 		 * ICMP checksum is computed by assuming it is valid in the
 		 * echo request and not verified.
 		 */
@@ -463,10 +463,10 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs)
 			ip_h->src_addr = ip_h->dst_addr;
 			ip_h->dst_addr = ip_addr;
 		}
-		icmp_h->icmp_type = RTE_IP_ICMP_ECHO_REPLY;
+		icmp_h->icmp_type = RTE_ICMP_TYPE_ECHO_REPLY;
 		cksum = ~icmp_h->icmp_cksum & 0xffff;
-		cksum += ~RTE_BE16(RTE_IP_ICMP_ECHO_REQUEST << 8) & 0xffff;
-		cksum += RTE_BE16(RTE_IP_ICMP_ECHO_REPLY << 8);
+		cksum += ~RTE_BE16(RTE_ICMP_TYPE_ECHO_REQUEST << 8) & 0xffff;
+		cksum += RTE_BE16(RTE_ICMP_TYPE_ECHO_REPLY << 8);
 		cksum = (cksum & 0xffff) + (cksum >> 16);
 		cksum = (cksum & 0xffff) + (cksum >> 16);
 		icmp_h->icmp_cksum = ~cksum;
diff --git a/doc/guides/rel_notes/release_24_11.rst b/doc/guides/rel_notes/release_24_11.rst
index d2301461ce35..0e9c81b32b20 100644
--- a/doc/guides/rel_notes/release_24_11.rst
+++ b/doc/guides/rel_notes/release_24_11.rst
@@ -238,6 +238,12 @@ New Features
   Added ability for node to advertise and update multiple xstat counters,
   that can be retrieved using ``rte_graph_cluster_stats_get``.
 
+* **Added new ICMP message types and codes.**
+
+  New ICMP message types and codes from RFC 792 are available in ``rte_icmp.h``.
+  Message types now use the ``RTE_ICMP_TYPE_`` prefix.
+  Message codes use the ``RTE_ICMP_CODE_`` prefix.
+
 
 Removed Items
 -------------
diff --git a/lib/net/rte_icmp.h b/lib/net/rte_icmp.h
index 7a33280aa1e4..e69d68ab6e22 100644
--- a/lib/net/rte_icmp.h
+++ b/lib/net/rte_icmp.h
@@ -50,8 +50,37 @@ struct rte_icmp_hdr {
 } __rte_packed;
 
 /* ICMP packet types */
-#define RTE_IP_ICMP_ECHO_REPLY   0
-#define RTE_IP_ICMP_ECHO_REQUEST 8
+#define RTE_ICMP_TYPE_ECHO_REPLY 0
+#define RTE_IP_ICMP_ECHO_REPLY \
+	(RTE_DEPRECATED(RTE_IP_ICMP_ECHO_REPLY) RTE_ICMP_TYPE_ECHO_REPLY)
+#define RTE_ICMP_TYPE_DEST_UNREACHABLE 3
+#define RTE_ICMP_TYPE_REDIRECT 5
+#define RTE_ICMP_TYPE_ECHO_REQUEST 8
+#define RTE_IP_ICMP_ECHO_REQUEST \
+	(RTE_DEPRECATED(RTE_IP_ICMP_ECHO_REQUEST) RTE_ICMP_TYPE_ECHO_REQUEST)
+#define RTE_ICMP_TYPE_TTL_EXCEEDED 11
+#define RTE_ICMP_TYPE_PARAM_PROBLEM 12
+#define RTE_ICMP_TYPE_TIMESTAMP_REQUEST 13
+#define RTE_ICMP_TYPE_TIMESTAMP_REPLY 14
+
+/* Destination Unreachable codes */
+#define RTE_ICMP_CODE_UNREACH_NET 0
+#define RTE_ICMP_CODE_UNREACH_HOST 1
+#define RTE_ICMP_CODE_UNREACH_PROTO 2
+#define RTE_ICMP_CODE_UNREACH_PORT 3
+#define RTE_ICMP_CODE_UNREACH_FRAG 4
+#define RTE_ICMP_CODE_UNREACH_SRC 5
+
+/* Time Exceeded codes */
+#define RTE_ICMP_CODE_TTL_EXCEEDED 0
+#define RTE_ICMP_CODE_TTL_FRAG 1
+
+/* Redirect codes */
+#define RTE_ICMP_CODE_REDIRECT_NET 0
+#define RTE_ICMP_CODE_REDIRECT_HOST 1
+#define RTE_ICMP_CODE_REDIRECT_TOS_NET 2
+#define RTE_ICMP_CODE_REDIRECT_TOS_HOST 3
+
 #define RTE_ICMP6_ECHO_REQUEST 128
 #define RTE_ICMP6_ECHO_REPLY   129
 
-- 
2.47.0