[dpdk-dev] [PATCH v2 0/4] add lookaside IPsec UDP encapsulation and transport mode

[dpdk-dev] [PATCH v2 0/4] add lookaside IPsec UDP encapsulation and transport mode

[Tejasree Kondoj]

This series adds lookaside IPsec UDP encapsulation and
transport mode support.
The functionality has been tested with ipsec-secgw application
running in lookaside protocol offload mode.

v2:
* Supported per SA UDP encapsulation in ipsec-secgw
* Added new packet type for UDP-ESP packets in mbuf

Tejasree Kondoj (4):
  crypto/octeontx2: add UDP encapsulation support
  mbuf: add packet type for UDP-ESP tunnel packets
  examples/ipsec-secgw: add UDP encapsulation support
  crypto/octeontx2: support lookaside IPv4 transport mode

 doc/guides/cryptodevs/octeontx2.rst           |   2 +
 doc/guides/rel_notes/release_21_05.rst        |  17 +++
 doc/guides/sample_app_ug/ipsec_secgw.rst      |  15 ++-
 drivers/crypto/octeontx2/otx2_cryptodev_ops.c |   7 +-
 drivers/crypto/octeontx2/otx2_cryptodev_sec.c | 126 ++++++++----------
 drivers/crypto/octeontx2/otx2_cryptodev_sec.h |   4 +-
 drivers/crypto/octeontx2/otx2_ipsec_po.h      |   6 +
 drivers/crypto/octeontx2/otx2_ipsec_po_ops.h  |   8 +-
 examples/ipsec-secgw/ipsec-secgw.c            |  29 +++-
 examples/ipsec-secgw/ipsec-secgw.h            |   2 +
 examples/ipsec-secgw/ipsec.c                  |   9 ++
 examples/ipsec-secgw/ipsec.h                  |   2 +
 examples/ipsec-secgw/sa.c                     |  18 +++
 examples/ipsec-secgw/sad.h                    |   7 +-
 lib/librte_mbuf/rte_mbuf_ptype.h              |  21 +++
 15 files changed, 191 insertions(+), 82 deletions(-)

-- 
2.27.0

[dpdk-dev] [PATCH v2 1/4] crypto/octeontx2: add UDP encapsulation support

[Tejasree Kondoj]

Adding UDP encapsulation support for IPsec in
lookaside protocol mode.

Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
---
 doc/guides/cryptodevs/octeontx2.rst           |  1 +
 doc/guides/rel_notes/release_21_05.rst        |  5 +++
 drivers/crypto/octeontx2/otx2_cryptodev_sec.c | 40 ++++++-------------
 3 files changed, 18 insertions(+), 28 deletions(-)

diff --git a/doc/guides/cryptodevs/octeontx2.rst b/doc/guides/cryptodevs/octeontx2.rst
index d312eeb74c..b30f98180a 100644
--- a/doc/guides/cryptodevs/octeontx2.rst
+++ b/doc/guides/cryptodevs/octeontx2.rst
@@ -181,6 +181,7 @@ Features supported
 * Tunnel mode
 * ESN
 * Anti-replay
+* UDP Encapsulation
 * AES-128/192/256-GCM
 * AES-128/192/256-CBC-SHA1-HMAC
 * AES-128/192/256-CBC-SHA256-128-HMAC
diff --git a/doc/guides/rel_notes/release_21_05.rst b/doc/guides/rel_notes/release_21_05.rst
index 8e686cc627..8065b3daf8 100644
--- a/doc/guides/rel_notes/release_21_05.rst
+++ b/doc/guides/rel_notes/release_21_05.rst
@@ -94,6 +94,11 @@ New Features
 
   * Added support for preferred busy polling.
 
+* **Updated the OCTEON TX2 crypto PMD.**
+
+  * Updated the OCTEON TX2 crypto PMD lookaside protocol offload for IPsec with
+    UDP encapsulation support for NAT Traversal.
+
 * **Updated testpmd.**
 
   * Added a command line option to configure forced speed for Ethernet port.
diff --git a/drivers/crypto/octeontx2/otx2_cryptodev_sec.c b/drivers/crypto/octeontx2/otx2_cryptodev_sec.c
index 342f089df8..8942ff1fac 100644
--- a/drivers/crypto/octeontx2/otx2_cryptodev_sec.c
+++ b/drivers/crypto/octeontx2/otx2_cryptodev_sec.c
@@ -203,6 +203,7 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 				     struct rte_security_session *sec_sess)
 {
 	struct rte_crypto_sym_xform *auth_xform, *cipher_xform;
+	struct otx2_ipsec_po_ip_template *template;
 	const uint8_t *cipher_key, *auth_key;
 	struct otx2_sec_session_ipsec_lp *lp;
 	struct otx2_ipsec_po_sa_ctl *ctl;
@@ -248,11 +249,7 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 		if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV4) {
 
 			if (ctl->enc_type == OTX2_IPSEC_PO_SA_ENC_AES_GCM) {
-				if (ipsec->options.udp_encap) {
-					sa->aes_gcm.template.ip4.udp_src = 4500;
-					sa->aes_gcm.template.ip4.udp_dst = 4500;
-				}
-				ip = &sa->aes_gcm.template.ip4.ipv4_hdr;
+				template = &sa->aes_gcm.template;
 				ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
 						aes_gcm.template) + sizeof(
 						sa->aes_gcm.template.ip4);
@@ -260,11 +257,7 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 				lp->ctx_len = ctx_len >> 3;
 			} else if (ctl->auth_type ==
 					OTX2_IPSEC_PO_SA_AUTH_SHA1) {
-				if (ipsec->options.udp_encap) {
-					sa->sha1.template.ip4.udp_src = 4500;
-					sa->sha1.template.ip4.udp_dst = 4500;
-				}
-				ip = &sa->sha1.template.ip4.ipv4_hdr;
+				template = &sa->sha1.template;
 				ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
 						sha1.template) + sizeof(
 						sa->sha1.template.ip4);
@@ -272,11 +265,7 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 				lp->ctx_len = ctx_len >> 3;
 			} else if (ctl->auth_type ==
 					OTX2_IPSEC_PO_SA_AUTH_SHA2_256) {
-				if (ipsec->options.udp_encap) {
-					sa->sha2.template.ip4.udp_src = 4500;
-					sa->sha2.template.ip4.udp_dst = 4500;
-				}
-				ip = &sa->sha2.template.ip4.ipv4_hdr;
+				template = &sa->sha2.template;
 				ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
 						sha2.template) + sizeof(
 						sa->sha2.template.ip4);
@@ -285,8 +274,15 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 			} else {
 				return -EINVAL;
 			}
+			ip = &template->ip4.ipv4_hdr;
+			if (ipsec->options.udp_encap) {
+				ip->next_proto_id = IPPROTO_UDP;
+				template->ip4.udp_src = rte_be_to_cpu_16(4500);
+				template->ip4.udp_dst = rte_be_to_cpu_16(4500);
+			} else {
+				ip->next_proto_id = IPPROTO_ESP;
+			}
 			ip->version_ihl = RTE_IPV4_VHL_DEF;
-			ip->next_proto_id = IPPROTO_ESP;
 			ip->time_to_live = ipsec->tunnel.ipv4.ttl;
 			ip->type_of_service |= (ipsec->tunnel.ipv4.dscp << 2);
 			if (ipsec->tunnel.ipv4.df)
@@ -299,10 +295,6 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 				RTE_SECURITY_IPSEC_TUNNEL_IPV6) {
 
 			if (ctl->enc_type == OTX2_IPSEC_PO_SA_ENC_AES_GCM) {
-				if (ipsec->options.udp_encap) {
-					sa->aes_gcm.template.ip6.udp_src = 4500;
-					sa->aes_gcm.template.ip6.udp_dst = 4500;
-				}
 				ip6 = &sa->aes_gcm.template.ip6.ipv6_hdr;
 				ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
 						aes_gcm.template) + sizeof(
@@ -311,10 +303,6 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 				lp->ctx_len = ctx_len >> 3;
 			} else if (ctl->auth_type ==
 					OTX2_IPSEC_PO_SA_AUTH_SHA1) {
-				if (ipsec->options.udp_encap) {
-					sa->sha1.template.ip6.udp_src = 4500;
-					sa->sha1.template.ip6.udp_dst = 4500;
-				}
 				ip6 = &sa->sha1.template.ip6.ipv6_hdr;
 				ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
 						sha1.template) + sizeof(
@@ -323,10 +311,6 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 				lp->ctx_len = ctx_len >> 3;
 			} else if (ctl->auth_type ==
 					OTX2_IPSEC_PO_SA_AUTH_SHA2_256) {
-				if (ipsec->options.udp_encap) {
-					sa->sha2.template.ip6.udp_src = 4500;
-					sa->sha2.template.ip6.udp_dst = 4500;
-				}
 				ip6 = &sa->sha2.template.ip6.ipv6_hdr;
 				ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
 						sha2.template) + sizeof(
-- 
2.27.0

[dpdk-dev] [PATCH v2 2/4] mbuf: add packet type for UDP-ESP tunnel packets

[Tejasree Kondoj]

Adding new mbuf packet type for UDP encapsulated
ESP packets.

Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
---
 doc/guides/rel_notes/release_21_05.rst |  5 +++++
 lib/librte_mbuf/rte_mbuf_ptype.h       | 21 +++++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/doc/guides/rel_notes/release_21_05.rst b/doc/guides/rel_notes/release_21_05.rst
index 8065b3daf8..4ab2d7500f 100644
--- a/doc/guides/rel_notes/release_21_05.rst
+++ b/doc/guides/rel_notes/release_21_05.rst
@@ -55,6 +55,11 @@ New Features
      Also, make sure to start the actual text at the margin.
      =======================================================
 
+* **Added new packet type for UDP-ESP packets in mbuf.**
+
+  Added new packet type ``RTE_PTYPE_TUNNEL_ESP_IN_UDP`` which can be
+  used to identify UDP encapsulated ESP packets.
+
 * **Enhanced ethdev representor syntax.**
 
   * Introduced representor type of VF, SF and PF.
diff --git a/lib/librte_mbuf/rte_mbuf_ptype.h b/lib/librte_mbuf/rte_mbuf_ptype.h
index 17a2dd3576..bf92ce0c1a 100644
--- a/lib/librte_mbuf/rte_mbuf_ptype.h
+++ b/lib/librte_mbuf/rte_mbuf_ptype.h
@@ -491,6 +491,27 @@ extern "C" {
  * | 'destination port'=6635>
  */
 #define RTE_PTYPE_TUNNEL_MPLS_IN_UDP      0x0000d000
+/**
+ * ESP-in-UDP tunneling packet type (RFC 3948).
+ *
+ * Packet format:
+ * <'ether type'=0x0800
+ * | 'version'=4, 'protocol'=17
+ * | 'destination port'=4500>
+ * or,
+ * <'ether type'=0x86DD
+ * | 'version'=6, 'next header'=17
+ * | 'destination port'=4500>
+ * or,
+ * <'ether type'=0x0800
+ * | 'version'=4, 'protocol'=17
+ * | 'source port'=4500>
+ * or,
+ * <'ether type'=0x86DD
+ * | 'version'=6, 'next header'=17
+ * | 'source port'=4500>
+ */
+#define RTE_PTYPE_TUNNEL_ESP_IN_UDP       0x0000e000
 /**
  * Mask of tunneling packet types.
  */
-- 
2.27.0

[dpdk-dev] [PATCH v2 3/4] examples/ipsec-secgw: add UDP encapsulation support

[Tejasree Kondoj]

Adding lookaside IPsec UDP encapsulation support
for NAT traversal.
Application has to add udp-encap option to sa config file
to enable UDP encapsulation on the SA.

Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
---
 doc/guides/rel_notes/release_21_05.rst   |  5 ++++
 doc/guides/sample_app_ug/ipsec_secgw.rst | 15 ++++++++++--
 examples/ipsec-secgw/ipsec-secgw.c       | 29 +++++++++++++++++++++---
 examples/ipsec-secgw/ipsec-secgw.h       |  2 ++
 examples/ipsec-secgw/ipsec.c             |  9 ++++++++
 examples/ipsec-secgw/ipsec.h             |  2 ++
 examples/ipsec-secgw/sa.c                | 18 +++++++++++++++
 examples/ipsec-secgw/sad.h               |  7 +++++-
 8 files changed, 81 insertions(+), 6 deletions(-)

diff --git a/doc/guides/rel_notes/release_21_05.rst b/doc/guides/rel_notes/release_21_05.rst
index 4ab2d7500f..9ef2537b1a 100644
--- a/doc/guides/rel_notes/release_21_05.rst
+++ b/doc/guides/rel_notes/release_21_05.rst
@@ -111,6 +111,11 @@ New Features
   * Added command to display Rx queue used descriptor count.
     ``show port (port_id) rxq (queue_id) desc used count``
 
+* **Updated ipsec-secgw sample application.**
+
+  * Updated the ``ipsec-secgw`` sample application with UDP encapsulation
+    support for NAT Traversal.
+
 
 Removed Items
 -------------
diff --git a/doc/guides/sample_app_ug/ipsec_secgw.rst b/doc/guides/sample_app_ug/ipsec_secgw.rst
index 176e292d3f..07bbbb5916 100644
--- a/doc/guides/sample_app_ug/ipsec_secgw.rst
+++ b/doc/guides/sample_app_ug/ipsec_secgw.rst
@@ -500,7 +500,7 @@ The SA rule syntax is shown as follows:
 
     sa <dir> <spi> <cipher_algo> <cipher_key> <auth_algo> <auth_key>
     <mode> <src_ip> <dst_ip> <action_type> <port_id> <fallback>
-    <flow-direction> <port_id> <queue_id>
+    <flow-direction> <port_id> <queue_id> <udp-encap>
 
 where each options means:
 
@@ -709,6 +709,17 @@ where each options means:
    * *port_id*: Port ID of the NIC for which the SA is configured.
    * *queue_id*: Queue ID to which traffic should be redirected.
 
+ ``<udp-encap>``
+
+ * Option to enable IPsec UDP encapsulation for NAT Traversal.
+   Only lookaside-protocol-offload mode is supported at the moment.
+
+ * Optional: Yes, it is disabled by default
+
+ * Syntax:
+
+   * *udp-encap*
+
 Example SA rules:
 
 .. code-block:: console
@@ -1023,4 +1034,4 @@ Available options:
 *   ``-h`` Show usage.
 
 If <ipsec_mode> is specified, only tests for that mode will be invoked. For the
-list of available modes please refer to run_test.sh.
\ No newline at end of file
+list of available modes please refer to run_test.sh.
diff --git a/examples/ipsec-secgw/ipsec-secgw.c b/examples/ipsec-secgw/ipsec-secgw.c
index 20d69ba813..6f6f2aa796 100644
--- a/examples/ipsec-secgw/ipsec-secgw.c
+++ b/examples/ipsec-secgw/ipsec-secgw.c
@@ -184,7 +184,8 @@ static uint64_t frag_ttl_ns = MAX_FRAG_TTL_NS;
 /* application wide librte_ipsec/SA parameters */
 struct app_sa_prm app_sa_prm = {
 			.enable = 0,
-			.cache_sz = SA_CACHE_SZ
+			.cache_sz = SA_CACHE_SZ,
+			.udp_encap = 0
 		};
 static const char *cfgfile;
 
@@ -360,6 +361,9 @@ prepare_one_packet(struct rte_mbuf *pkt, struct ipsec_traffic *t)
 	const struct rte_ether_hdr *eth;
 	const struct rte_ipv4_hdr *iph4;
 	const struct rte_ipv6_hdr *iph6;
+	const struct rte_udp_hdr *udp;
+	uint16_t ip4_hdr_len;
+	uint16_t nat_port;
 
 	eth = rte_pktmbuf_mtod(pkt, const struct rte_ether_hdr *);
 	if (eth->ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4)) {
@@ -368,9 +372,28 @@ prepare_one_packet(struct rte_mbuf *pkt, struct ipsec_traffic *t)
 			RTE_ETHER_HDR_LEN);
 		adjust_ipv4_pktlen(pkt, iph4, 0);
 
-		if (iph4->next_proto_id == IPPROTO_ESP)
+		switch (iph4->next_proto_id) {
+		case IPPROTO_ESP:
 			t->ipsec.pkts[(t->ipsec.num)++] = pkt;
-		else {
+			break;
+		case IPPROTO_UDP:
+			if (app_sa_prm.udp_encap == 1) {
+				ip4_hdr_len = ((iph4->version_ihl &
+					RTE_IPV4_HDR_IHL_MASK) *
+					RTE_IPV4_IHL_MULTIPLIER);
+				udp = rte_pktmbuf_mtod_offset(pkt,
+					struct rte_udp_hdr *, ip4_hdr_len);
+				nat_port = rte_cpu_to_be_16(IPSEC_NAT_T_PORT);
+				if (udp->src_port == nat_port ||
+					udp->dst_port == nat_port){
+					t->ipsec.pkts[(t->ipsec.num)++] = pkt;
+					pkt->packet_type |=
+						RTE_PTYPE_TUNNEL_ESP_IN_UDP;
+					break;
+				}
+			}
+		/* Fall through */
+		default:
 			t->ip4.data[t->ip4.num] = &iph4->next_proto_id;
 			t->ip4.pkts[(t->ip4.num)++] = pkt;
 		}
diff --git a/examples/ipsec-secgw/ipsec-secgw.h b/examples/ipsec-secgw/ipsec-secgw.h
index f2281e73cf..6887d752ab 100644
--- a/examples/ipsec-secgw/ipsec-secgw.h
+++ b/examples/ipsec-secgw/ipsec-secgw.h
@@ -47,6 +47,8 @@
 
 #define ETHADDR(a, b, c, d, e, f) (__BYTES_TO_UINT64(a, b, c, d, e, f, 0, 0))
 
+#define IPSEC_NAT_T_PORT 4500
+
 struct traffic_type {
 	const uint8_t *data[MAX_PKT_BURST * 2];
 	struct rte_mbuf *pkts[MAX_PKT_BURST * 2];
diff --git a/examples/ipsec-secgw/ipsec.c b/examples/ipsec-secgw/ipsec.c
index 6baeeb342f..79382f0fa2 100644
--- a/examples/ipsec-secgw/ipsec.c
+++ b/examples/ipsec-secgw/ipsec.c
@@ -52,6 +52,7 @@ set_ipsec_conf(struct ipsec_sa *sa, struct rte_security_ipsec_xform *ipsec)
 	ipsec->esn_soft_limit = IPSEC_OFFLOAD_ESN_SOFTLIMIT;
 	ipsec->replay_win_sz = app_sa_prm.window_size;
 	ipsec->options.esn = app_sa_prm.enable_esn;
+	ipsec->options.udp_encap = sa->udp_encap;
 }
 
 int
@@ -528,6 +529,7 @@ ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 	struct rte_crypto_sym_op *sym_cop;
 	struct ipsec_sa *sa;
 	struct rte_ipsec_session *ips;
+	int is_udp_esp;
 
 	for (i = 0; i < nb_pkts; i++) {
 		if (unlikely(sas[i] == NULL)) {
@@ -556,6 +558,13 @@ ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 				continue;
 			}
 
+			is_udp_esp = pkts[i]->packet_type &
+					RTE_PTYPE_TUNNEL_ESP_IN_UDP;
+			if (unlikely(is_udp_esp && sa->udp_encap != 1)) {
+				free_pkts(&pkts[i], 1);
+				continue;
+			}
+
 			sym_cop = get_sym_cop(&priv->cop);
 			sym_cop->m_src = pkts[i];
 
diff --git a/examples/ipsec-secgw/ipsec.h b/examples/ipsec-secgw/ipsec.h
index 7031e28c46..ae5058de27 100644
--- a/examples/ipsec-secgw/ipsec.h
+++ b/examples/ipsec-secgw/ipsec.h
@@ -75,6 +75,7 @@ struct app_sa_prm {
 	uint32_t window_size; /* replay window size */
 	uint32_t enable_esn;  /* enable/disable ESN support */
 	uint32_t cache_sz;	/* per lcore SA cache size */
+	uint32_t udp_encap;   /* enable/disable UDP Encapsulation */
 	uint64_t flags;       /* rte_ipsec_sa_prm.flags */
 };
 
@@ -136,6 +137,7 @@ struct ipsec_sa {
 		struct rte_security_ipsec_xform *sec_xform;
 	};
 	enum rte_security_ipsec_sa_direction direction;
+	uint8_t udp_encap;
 	uint16_t portid;
 	uint8_t fdir_qid;
 	uint8_t fdir_flag;
diff --git a/examples/ipsec-secgw/sa.c b/examples/ipsec-secgw/sa.c
index cd1397531a..7bb9ef36c2 100644
--- a/examples/ipsec-secgw/sa.c
+++ b/examples/ipsec-secgw/sa.c
@@ -298,6 +298,7 @@ parse_sa_tokens(char **tokens, uint32_t n_tokens,
 	uint32_t portid_p = 0;
 	uint32_t fallback_p = 0;
 	int16_t status_p = 0;
+	uint16_t udp_encap_p = 0;
 
 	if (strcmp(tokens[0], "in") == 0) {
 		ri = &nb_sa_in;
@@ -757,6 +758,23 @@ parse_sa_tokens(char **tokens, uint32_t n_tokens,
 			}
 			continue;
 		}
+		if (strcmp(tokens[ti], "udp-encap") == 0) {
+			APP_CHECK(ips->type ==
+				RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL,
+				status, "UDP encapsulation is allowed if the "
+				"session is of type lookaside-protocol-offload "
+				"only.");
+			if (status->status < 0)
+				return;
+			APP_CHECK_PRESENCE(udp_encap_p, tokens[ti], status);
+			if (status->status < 0)
+				return;
+
+			rule->udp_encap = 1;
+			app_sa_prm.udp_encap = 1;
+			udp_encap_p = 1;
+			continue;
+		}
 
 		/* unrecognizeable input */
 		APP_CHECK(0, status, "unrecognized input \"%s\"",
diff --git a/examples/ipsec-secgw/sad.h b/examples/ipsec-secgw/sad.h
index 473aaa938e..9616a80948 100644
--- a/examples/ipsec-secgw/sad.h
+++ b/examples/ipsec-secgw/sad.h
@@ -77,6 +77,8 @@ sad_lookup(struct ipsec_sad *sad, struct rte_mbuf *pkts[],
 	uint32_t spi, cache_idx;
 	struct ipsec_sad_cache *cache;
 	struct ipsec_sa *cached_sa;
+	uint16_t udp_hdr_len = 0;
+	int is_udp_esp;
 	int is_ipv4;
 
 	cache  = &RTE_PER_LCORE(sad_cache);
@@ -85,8 +87,11 @@ sad_lookup(struct ipsec_sad *sad, struct rte_mbuf *pkts[],
 	for (i = 0; i < nb_pkts; i++) {
 		ipv4 = rte_pktmbuf_mtod(pkts[i], struct rte_ipv4_hdr *);
 		ipv6 = rte_pktmbuf_mtod(pkts[i], struct rte_ipv6_hdr *);
+		is_udp_esp = pkts[i]->packet_type & RTE_PTYPE_TUNNEL_ESP_IN_UDP;
+		if (is_udp_esp)
+			udp_hdr_len = sizeof(struct rte_udp_hdr);
 		esp = rte_pktmbuf_mtod_offset(pkts[i], struct rte_esp_hdr *,
-				pkts[i]->l3_len);
+				pkts[i]->l3_len + udp_hdr_len);
 
 		is_ipv4 = pkts[i]->packet_type & RTE_PTYPE_L3_IPV4;
 		spi = rte_be_to_cpu_32(esp->spi);
-- 
2.27.0

[dpdk-dev] [PATCH v2 4/4] crypto/octeontx2: support lookaside IPv4 transport mode

[Tejasree Kondoj]

Adding support for IPv4 lookaside IPsec transport mode.

Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
---
 doc/guides/cryptodevs/octeontx2.rst           |   1 +
 doc/guides/rel_notes/release_21_05.rst        |   2 +
 drivers/crypto/octeontx2/otx2_cryptodev_ops.c |   7 +-
 drivers/crypto/octeontx2/otx2_cryptodev_sec.c | 110 ++++++++++--------
 drivers/crypto/octeontx2/otx2_cryptodev_sec.h |   4 +-
 drivers/crypto/octeontx2/otx2_ipsec_po.h      |   6 +
 drivers/crypto/octeontx2/otx2_ipsec_po_ops.h  |   8 +-
 7 files changed, 78 insertions(+), 60 deletions(-)

diff --git a/doc/guides/cryptodevs/octeontx2.rst b/doc/guides/cryptodevs/octeontx2.rst
index b30f98180a..811e61a1f6 100644
--- a/doc/guides/cryptodevs/octeontx2.rst
+++ b/doc/guides/cryptodevs/octeontx2.rst
@@ -179,6 +179,7 @@ Features supported
 * IPv6
 * ESP
 * Tunnel mode
+* Transport mode(IPv4)
 * ESN
 * Anti-replay
 * UDP Encapsulation
diff --git a/doc/guides/rel_notes/release_21_05.rst b/doc/guides/rel_notes/release_21_05.rst
index 9ef2537b1a..be8c36b92e 100644
--- a/doc/guides/rel_notes/release_21_05.rst
+++ b/doc/guides/rel_notes/release_21_05.rst
@@ -103,6 +103,8 @@ New Features
 
   * Updated the OCTEON TX2 crypto PMD lookaside protocol offload for IPsec with
     UDP encapsulation support for NAT Traversal.
+  * Updated the OCTEON TX2 crypto PMD lookaside protocol offload for IPsec with
+    IPv4 transport mode support.
 
 * **Updated testpmd.**
 
diff --git a/drivers/crypto/octeontx2/otx2_cryptodev_ops.c b/drivers/crypto/octeontx2/otx2_cryptodev_ops.c
index cec20b5c6d..c20170bcaa 100644
--- a/drivers/crypto/octeontx2/otx2_cryptodev_ops.c
+++ b/drivers/crypto/octeontx2/otx2_cryptodev_ops.c
@@ -928,7 +928,7 @@ otx2_cpt_sec_post_process(struct rte_crypto_op *cop, uintptr_t *rsp)
 	struct rte_mbuf *m = sym_op->m_src;
 	struct rte_ipv6_hdr *ip6;
 	struct rte_ipv4_hdr *ip;
-	uint16_t m_len;
+	uint16_t m_len = 0;
 	int mdata_len;
 	char *data;
 
@@ -938,11 +938,12 @@ otx2_cpt_sec_post_process(struct rte_crypto_op *cop, uintptr_t *rsp)
 	if (word0->s.opcode.major == OTX2_IPSEC_PO_PROCESS_IPSEC_INB) {
 		data = rte_pktmbuf_mtod(m, char *);
 
-		if (rsp[4] == RTE_SECURITY_IPSEC_TUNNEL_IPV4) {
+		if (rsp[4] == OTX2_IPSEC_PO_TRANSPORT ||
+		    rsp[4] == OTX2_IPSEC_PO_TUNNEL_IPV4) {
 			ip = (struct rte_ipv4_hdr *)(data +
 				OTX2_IPSEC_PO_INB_RPTR_HDR);
 			m_len = rte_be_to_cpu_16(ip->total_length);
-		} else {
+		} else if (rsp[4] == OTX2_IPSEC_PO_TUNNEL_IPV6) {
 			ip6 = (struct rte_ipv6_hdr *)(data +
 				OTX2_IPSEC_PO_INB_RPTR_HDR);
 			m_len = rte_be_to_cpu_16(ip6->payload_len) +
diff --git a/drivers/crypto/octeontx2/otx2_cryptodev_sec.c b/drivers/crypto/octeontx2/otx2_cryptodev_sec.c
index 8942ff1fac..6493ce8370 100644
--- a/drivers/crypto/octeontx2/otx2_cryptodev_sec.c
+++ b/drivers/crypto/octeontx2/otx2_cryptodev_sec.c
@@ -25,12 +25,15 @@ ipsec_lp_len_precalc(struct rte_security_ipsec_xform *ipsec,
 {
 	struct rte_crypto_sym_xform *cipher_xform, *auth_xform;
 
-	if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV4)
-		lp->partial_len = sizeof(struct rte_ipv4_hdr);
-	else if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV6)
-		lp->partial_len = sizeof(struct rte_ipv6_hdr);
-	else
-		return -EINVAL;
+	lp->partial_len = 0;
+	if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) {
+		if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV4)
+			lp->partial_len = sizeof(struct rte_ipv4_hdr);
+		else if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV6)
+			lp->partial_len = sizeof(struct rte_ipv6_hdr);
+		else
+			return -EINVAL;
+	}
 
 	if (ipsec->proto == RTE_SECURITY_IPSEC_SA_PROTO_ESP) {
 		lp->partial_len += sizeof(struct rte_esp_hdr);
@@ -203,7 +206,7 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 				     struct rte_security_session *sec_sess)
 {
 	struct rte_crypto_sym_xform *auth_xform, *cipher_xform;
-	struct otx2_ipsec_po_ip_template *template;
+	struct otx2_ipsec_po_ip_template *template = NULL;
 	const uint8_t *cipher_key, *auth_key;
 	struct otx2_sec_session_ipsec_lp *lp;
 	struct otx2_ipsec_po_sa_ctl *ctl;
@@ -229,10 +232,10 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 	memset(sa, 0, sizeof(struct otx2_ipsec_po_out_sa));
 
 	/* Initialize lookaside ipsec private data */
+	lp->mode_type = OTX2_IPSEC_PO_TRANSPORT;
 	lp->ip_id = 0;
 	lp->seq_lo = 1;
 	lp->seq_hi = 0;
-	lp->tunnel_type = ipsec->tunnel.type;
 
 	ret = ipsec_po_sa_ctl_set(ipsec, crypto_xform, ctl);
 	if (ret)
@@ -242,46 +245,47 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 	if (ret)
 		return ret;
 
-	if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) {
-		/* Start ip id from 1 */
-		lp->ip_id = 1;
+	/* Start ip id from 1 */
+	lp->ip_id = 1;
+
+	if (ctl->enc_type == OTX2_IPSEC_PO_SA_ENC_AES_GCM) {
+		template = &sa->aes_gcm.template;
+		ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
+				aes_gcm.template) + sizeof(
+				sa->aes_gcm.template.ip4);
+		ctx_len = RTE_ALIGN_CEIL(ctx_len, 8);
+		lp->ctx_len = ctx_len >> 3;
+	} else if (ctl->auth_type ==
+			OTX2_IPSEC_PO_SA_AUTH_SHA1) {
+		template = &sa->sha1.template;
+		ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
+				sha1.template) + sizeof(
+				sa->sha1.template.ip4);
+		ctx_len = RTE_ALIGN_CEIL(ctx_len, 8);
+		lp->ctx_len = ctx_len >> 3;
+	} else if (ctl->auth_type ==
+			OTX2_IPSEC_PO_SA_AUTH_SHA2_256) {
+		template = &sa->sha2.template;
+		ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
+				sha2.template) + sizeof(
+				sa->sha2.template.ip4);
+		ctx_len = RTE_ALIGN_CEIL(ctx_len, 8);
+		lp->ctx_len = ctx_len >> 3;
+	} else {
+		return -EINVAL;
+	}
+	ip = &template->ip4.ipv4_hdr;
+	if (ipsec->options.udp_encap) {
+		ip->next_proto_id = IPPROTO_UDP;
+		template->ip4.udp_src = rte_be_to_cpu_16(4500);
+		template->ip4.udp_dst = rte_be_to_cpu_16(4500);
+	} else {
+		ip->next_proto_id = IPPROTO_ESP;
+	}
 
+	if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) {
 		if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV4) {
-
-			if (ctl->enc_type == OTX2_IPSEC_PO_SA_ENC_AES_GCM) {
-				template = &sa->aes_gcm.template;
-				ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
-						aes_gcm.template) + sizeof(
-						sa->aes_gcm.template.ip4);
-				ctx_len = RTE_ALIGN_CEIL(ctx_len, 8);
-				lp->ctx_len = ctx_len >> 3;
-			} else if (ctl->auth_type ==
-					OTX2_IPSEC_PO_SA_AUTH_SHA1) {
-				template = &sa->sha1.template;
-				ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
-						sha1.template) + sizeof(
-						sa->sha1.template.ip4);
-				ctx_len = RTE_ALIGN_CEIL(ctx_len, 8);
-				lp->ctx_len = ctx_len >> 3;
-			} else if (ctl->auth_type ==
-					OTX2_IPSEC_PO_SA_AUTH_SHA2_256) {
-				template = &sa->sha2.template;
-				ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
-						sha2.template) + sizeof(
-						sa->sha2.template.ip4);
-				ctx_len = RTE_ALIGN_CEIL(ctx_len, 8);
-				lp->ctx_len = ctx_len >> 3;
-			} else {
-				return -EINVAL;
-			}
-			ip = &template->ip4.ipv4_hdr;
-			if (ipsec->options.udp_encap) {
-				ip->next_proto_id = IPPROTO_UDP;
-				template->ip4.udp_src = rte_be_to_cpu_16(4500);
-				template->ip4.udp_dst = rte_be_to_cpu_16(4500);
-			} else {
-				ip->next_proto_id = IPPROTO_ESP;
-			}
+			lp->mode_type = OTX2_IPSEC_PO_TUNNEL_IPV4;
 			ip->version_ihl = RTE_IPV4_VHL_DEF;
 			ip->time_to_live = ipsec->tunnel.ipv4.ttl;
 			ip->type_of_service |= (ipsec->tunnel.ipv4.dscp << 2);
@@ -294,6 +298,7 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 		} else if (ipsec->tunnel.type ==
 				RTE_SECURITY_IPSEC_TUNNEL_IPV6) {
 
+			lp->mode_type = OTX2_IPSEC_PO_TUNNEL_IPV6;
 			if (ctl->enc_type == OTX2_IPSEC_PO_SA_ENC_AES_GCM) {
 				ip6 = &sa->aes_gcm.template.ip6.ipv6_hdr;
 				ctx_len = offsetof(struct otx2_ipsec_po_out_sa,
@@ -336,11 +341,7 @@ crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 				sizeof(struct in6_addr));
 			memcpy(&ip6->dst_addr, &ipsec->tunnel.ipv6.dst_addr,
 				sizeof(struct in6_addr));
-		} else {
-			return -EINVAL;
 		}
-	} else {
-		return -EINVAL;
 	}
 
 	cipher_xform = crypto_xform;
@@ -421,13 +422,20 @@ crypto_sec_ipsec_inb_session_create(struct rte_cryptodev *crypto_dev,
 	if (ret)
 		return ret;
 
-	lp->tunnel_type = ipsec->tunnel.type;
+	lp->mode_type = OTX2_IPSEC_PO_TRANSPORT;
+
 	auth_xform = crypto_xform;
 	cipher_xform = crypto_xform->next;
 
 	cipher_key_len = 0;
 	auth_key_len = 0;
 
+	if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL)
+		lp->mode_type = (ipsec->tunnel.type ==
+				RTE_SECURITY_IPSEC_TUNNEL_IPV4) ?
+				OTX2_IPSEC_PO_TUNNEL_IPV4 :
+				OTX2_IPSEC_PO_TUNNEL_IPV6;
+
 	if (crypto_xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
 		if (crypto_xform->aead.algo == RTE_CRYPTO_AEAD_AES_GCM)
 			memcpy(sa->iv.gcm.nonce, &ipsec->salt, 4);
diff --git a/drivers/crypto/octeontx2/otx2_cryptodev_sec.h b/drivers/crypto/octeontx2/otx2_cryptodev_sec.h
index 2849c1ab75..87f55c97fe 100644
--- a/drivers/crypto/octeontx2/otx2_cryptodev_sec.h
+++ b/drivers/crypto/octeontx2/otx2_cryptodev_sec.h
@@ -55,8 +55,8 @@ struct otx2_sec_session_ipsec_lp {
 	uint8_t iv_length;
 	/** Auth IV length in bytes */
 	uint8_t auth_iv_length;
-	/** IPsec tunnel type */
-	enum rte_security_ipsec_tunnel_type tunnel_type;
+	/** IPsec mode and tunnel type */
+	enum otx2_ipsec_po_mode_type mode_type;
 };
 
 int otx2_crypto_sec_ctx_create(struct rte_cryptodev *crypto_dev);
diff --git a/drivers/crypto/octeontx2/otx2_ipsec_po.h b/drivers/crypto/octeontx2/otx2_ipsec_po.h
index eda9f19738..b3e7456551 100644
--- a/drivers/crypto/octeontx2/otx2_ipsec_po.h
+++ b/drivers/crypto/octeontx2/otx2_ipsec_po.h
@@ -20,6 +20,12 @@
 
 #define OTX2_IPSEC_PO_INB_RPTR_HDR         0x8
 
+enum otx2_ipsec_po_mode_type {
+	OTX2_IPSEC_PO_TRANSPORT = 1,
+	OTX2_IPSEC_PO_TUNNEL_IPV4,
+	OTX2_IPSEC_PO_TUNNEL_IPV6,
+};
+
 enum otx2_ipsec_po_comp_e {
 	OTX2_IPSEC_PO_CC_SUCCESS = 0x00,
 	OTX2_IPSEC_PO_CC_AUTH_UNSUPPORTED = 0xB0,
diff --git a/drivers/crypto/octeontx2/otx2_ipsec_po_ops.h b/drivers/crypto/octeontx2/otx2_ipsec_po_ops.h
index f4cab19811..58b199f4f3 100644
--- a/drivers/crypto/octeontx2/otx2_ipsec_po_ops.h
+++ b/drivers/crypto/octeontx2/otx2_ipsec_po_ops.h
@@ -26,7 +26,7 @@ otx2_ipsec_po_out_rlen_get(struct otx2_sec_session_ipsec_lp *sess,
 
 static __rte_always_inline struct cpt_request_info *
 alloc_request_struct(char *maddr, void *cop, int mdata_len,
-		     enum rte_security_ipsec_tunnel_type tunnel_type)
+		     enum otx2_ipsec_po_mode_type mode_type)
 {
 	struct cpt_request_info *req;
 	struct cpt_meta_info *meta;
@@ -48,7 +48,7 @@ alloc_request_struct(char *maddr, void *cop, int mdata_len,
 	op[1] = (uintptr_t)cop;
 	op[2] = (uintptr_t)req;
 	op[3] = mdata_len;
-	op[4] = tunnel_type;
+	op[4] = mode_type;
 
 	return req;
 }
@@ -89,7 +89,7 @@ process_outb_sa(struct rte_crypto_op *cop,
 
 	mdata += extend_tail; /* mdata follows encrypted data */
 	req = alloc_request_struct(mdata, (void *)cop, mdata_len,
-		sess->tunnel_type);
+		sess->mode_type);
 
 	data = rte_pktmbuf_prepend(m_src, extend_head);
 	if (unlikely(data == NULL)) {
@@ -162,7 +162,7 @@ process_inb_sa(struct rte_crypto_op *cop,
 	}
 
 	req = alloc_request_struct(mdata, (void *)cop, mdata_len,
-		sess->tunnel_type);
+		sess->mode_type);
 
 	/* Prepare CPT instruction */
 	word0.u64 = sess->ucmd_w0;
-- 
2.27.0

Re: [dpdk-dev] [PATCH v2 2/4] mbuf: add packet type for UDP-ESP tunnel packets

[Akhil Goyal]

> Adding new mbuf packet type for UDP encapsulated
> ESP packets.
> 
> Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
> ---
>  doc/guides/rel_notes/release_21_05.rst |  5 +++++
>  lib/librte_mbuf/rte_mbuf_ptype.h       | 21 +++++++++++++++++++++
>  2 files changed, 26 insertions(+)
> 
Acked-by: Akhil Goyal <gakhil@marvell.com>

++Olivier

Thomas,
Can this patch be part of crypto tree if acked by Olivier?

Regards,
Akhil

Re: [dpdk-dev] [PATCH v2 1/4] crypto/octeontx2: add UDP encapsulation support

[Akhil Goyal]

> Adding UDP encapsulation support for IPsec in
> lookaside protocol mode.
> 
> Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
> ---
Acked-by: Akhil Goyal <gakhil@marvell.com>

Re: [dpdk-dev] [PATCH v2 4/4] crypto/octeontx2: support lookaside IPv4 transport mode

[Akhil Goyal]

> 
> Adding support for IPv4 lookaside IPsec transport mode.
> 
> Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
> ---
Acked-by: Akhil Goyal <gakhil@marvell.com>

Re: [dpdk-dev] [PATCH v2 3/4] examples/ipsec-secgw: add UDP encapsulation support

[Akhil Goyal]

> 
> Adding lookaside IPsec UDP encapsulation support
> for NAT traversal.
> Application has to add udp-encap option to sa config file
> to enable UDP encapsulation on the SA.
> 
> Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
> ---
Acked-by: Akhil Goyal <gakhil@marvell.com>

Konstantin,
Any more comments on this?

Regards,
Akhil

Re: [dpdk-dev] [PATCH v2 2/4] mbuf: add packet type for UDP-ESP tunnel packets

[Thomas Monjalon]

05/04/2021 20:11, Akhil Goyal:
> > Adding new mbuf packet type for UDP encapsulated
> > ESP packets.
> > 
> > Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
> > ---
> >  doc/guides/rel_notes/release_21_05.rst |  5 +++++
> >  lib/librte_mbuf/rte_mbuf_ptype.h       | 21 +++++++++++++++++++++
> >  2 files changed, 26 insertions(+)
> > 
> Acked-by: Akhil Goyal <gakhil@marvell.com>
> 
> ++Olivier
> 
> Thomas,
> Can this patch be part of crypto tree if acked by Olivier?

Yes, adding a packet type is OK if reviewed by Olivier or Andrew.
Olivier, Andrew, please could you review?

Re: [dpdk-dev] [PATCH v2 3/4] examples/ipsec-secgw: add UDP encapsulation support

[Ananyev, Konstantin]

Hi Akhil,

> >
> > Adding lookaside IPsec UDP encapsulation support
> > for NAT traversal.
> > Application has to add udp-encap option to sa config file
> > to enable UDP encapsulation on the SA.
> >
> > Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
> > ---
> Acked-by: Akhil Goyal <gakhil@marvell.com>
> 
> Konstantin,
> Any more comments on this?

Didn't look at v2 yet.
Will try to do that during this week. 
Konstantin

Re: [dpdk-dev] [PATCH v2 3/4] examples/ipsec-secgw: add UDP encapsulation support

[Ananyev, Konstantin]

> 
> Adding lookaside IPsec UDP encapsulation support
> for NAT traversal.
> Application has to add udp-encap option to sa config file
> to enable UDP encapsulation on the SA.
> 
> Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
> ---
>  doc/guides/rel_notes/release_21_05.rst   |  5 ++++
>  doc/guides/sample_app_ug/ipsec_secgw.rst | 15 ++++++++++--
>  examples/ipsec-secgw/ipsec-secgw.c       | 29 +++++++++++++++++++++---
>  examples/ipsec-secgw/ipsec-secgw.h       |  2 ++
>  examples/ipsec-secgw/ipsec.c             |  9 ++++++++
>  examples/ipsec-secgw/ipsec.h             |  2 ++
>  examples/ipsec-secgw/sa.c                | 18 +++++++++++++++
>  examples/ipsec-secgw/sad.h               |  7 +++++-
>  8 files changed, 81 insertions(+), 6 deletions(-)
> 
> diff --git a/doc/guides/rel_notes/release_21_05.rst b/doc/guides/rel_notes/release_21_05.rst
> index 4ab2d7500f..9ef2537b1a 100644
> --- a/doc/guides/rel_notes/release_21_05.rst
> +++ b/doc/guides/rel_notes/release_21_05.rst
> @@ -111,6 +111,11 @@ New Features
>    * Added command to display Rx queue used descriptor count.
>      ``show port (port_id) rxq (queue_id) desc used count``
> 
> +* **Updated ipsec-secgw sample application.**
> +
> +  * Updated the ``ipsec-secgw`` sample application with UDP encapsulation
> +    support for NAT Traversal.
> +
> 
>  Removed Items
>  -------------
> diff --git a/doc/guides/sample_app_ug/ipsec_secgw.rst b/doc/guides/sample_app_ug/ipsec_secgw.rst
> index 176e292d3f..07bbbb5916 100644
> --- a/doc/guides/sample_app_ug/ipsec_secgw.rst
> +++ b/doc/guides/sample_app_ug/ipsec_secgw.rst
> @@ -500,7 +500,7 @@ The SA rule syntax is shown as follows:
> 
>      sa <dir> <spi> <cipher_algo> <cipher_key> <auth_algo> <auth_key>
>      <mode> <src_ip> <dst_ip> <action_type> <port_id> <fallback>
> -    <flow-direction> <port_id> <queue_id>
> +    <flow-direction> <port_id> <queue_id> <udp-encap>
> 
>  where each options means:
> 
> @@ -709,6 +709,17 @@ where each options means:
>     * *port_id*: Port ID of the NIC for which the SA is configured.
>     * *queue_id*: Queue ID to which traffic should be redirected.
> 
> + ``<udp-encap>``
> +
> + * Option to enable IPsec UDP encapsulation for NAT Traversal.
> +   Only lookaside-protocol-offload mode is supported at the moment.
> +
> + * Optional: Yes, it is disabled by default
> +
> + * Syntax:
> +
> +   * *udp-encap*
> +
>  Example SA rules:
> 
>  .. code-block:: console
> @@ -1023,4 +1034,4 @@ Available options:
>  *   ``-h`` Show usage.
> 
>  If <ipsec_mode> is specified, only tests for that mode will be invoked. For the
> -list of available modes please refer to run_test.sh.
> \ No newline at end of file
> +list of available modes please refer to run_test.sh.
> diff --git a/examples/ipsec-secgw/ipsec-secgw.c b/examples/ipsec-secgw/ipsec-secgw.c
> index 20d69ba813..6f6f2aa796 100644
> --- a/examples/ipsec-secgw/ipsec-secgw.c
> +++ b/examples/ipsec-secgw/ipsec-secgw.c
> @@ -184,7 +184,8 @@ static uint64_t frag_ttl_ns = MAX_FRAG_TTL_NS;
>  /* application wide librte_ipsec/SA parameters */
>  struct app_sa_prm app_sa_prm = {
>  			.enable = 0,
> -			.cache_sz = SA_CACHE_SZ
> +			.cache_sz = SA_CACHE_SZ,
> +			.udp_encap = 0
>  		};
>  static const char *cfgfile;
> 
> @@ -360,6 +361,9 @@ prepare_one_packet(struct rte_mbuf *pkt, struct ipsec_traffic *t)
>  	const struct rte_ether_hdr *eth;
>  	const struct rte_ipv4_hdr *iph4;
>  	const struct rte_ipv6_hdr *iph6;
> +	const struct rte_udp_hdr *udp;
> +	uint16_t ip4_hdr_len;
> +	uint16_t nat_port;
> 
>  	eth = rte_pktmbuf_mtod(pkt, const struct rte_ether_hdr *);
>  	if (eth->ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4)) {
> @@ -368,9 +372,28 @@ prepare_one_packet(struct rte_mbuf *pkt, struct ipsec_traffic *t)
>  			RTE_ETHER_HDR_LEN);
>  		adjust_ipv4_pktlen(pkt, iph4, 0);
> 
> -		if (iph4->next_proto_id == IPPROTO_ESP)
> +		switch (iph4->next_proto_id) {
> +		case IPPROTO_ESP:
>  			t->ipsec.pkts[(t->ipsec.num)++] = pkt;
> -		else {
> +			break;
> +		case IPPROTO_UDP:
> +			if (app_sa_prm.udp_encap == 1) {
> +				ip4_hdr_len = ((iph4->version_ihl &
> +					RTE_IPV4_HDR_IHL_MASK) *
> +					RTE_IPV4_IHL_MULTIPLIER);
> +				udp = rte_pktmbuf_mtod_offset(pkt,
> +					struct rte_udp_hdr *, ip4_hdr_len);
> +				nat_port = rte_cpu_to_be_16(IPSEC_NAT_T_PORT);
> +				if (udp->src_port == nat_port ||
> +					udp->dst_port == nat_port){
> +					t->ipsec.pkts[(t->ipsec.num)++] = pkt;
> +					pkt->packet_type |=
> +						RTE_PTYPE_TUNNEL_ESP_IN_UDP;
> +					break;
> +				}
> +			}
> +		/* Fall through */
> +		default:
>  			t->ip4.data[t->ip4.num] = &iph4->next_proto_id;
>  			t->ip4.pkts[(t->ip4.num)++] = pkt;
>  		}

As I understand you don't support UDP tunneling for ipv6 packets for now.
If so, then it probably worth to notice that in the doc, and in parse_sa_tokens()
add a check for ipv4.
Apart from that all seems ok to me.
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com> 

Re: [dpdk-dev] [PATCH v2 3/4] examples/ipsec-secgw: add UDP encapsulation support

[Tejasree Kondoj]

Hi Konstantin,

Please see inline.

Thanks
Tejasree

> -----Original Message-----
> From: Ananyev, Konstantin <konstantin.ananyev@intel.com>
> Sent: Tuesday, April 6, 2021 7:08 PM
> To: Tejasree Kondoj <ktejasree@marvell.com>; Akhil Goyal
> <gakhil@marvell.com>; Nicolau, Radu <radu.nicolau@intel.com>
> Cc: Anoob Joseph <anoobj@marvell.com>; Ankur Dwivedi
> <adwivedi@marvell.com>; Jerin Jacob Kollanukkaran <jerinj@marvell.com>;
> dev@dpdk.org
> Subject: [EXT] RE: [PATCH v2 3/4] examples/ipsec-secgw: add UDP
> encapsulation support
> 
> External Email
> 
> ----------------------------------------------------------------------
> 
> >
> > Adding lookaside IPsec UDP encapsulation support for NAT traversal.
> > Application has to add udp-encap option to sa config file to enable
> > UDP encapsulation on the SA.
> >
> > Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
> > ---
> >  doc/guides/rel_notes/release_21_05.rst   |  5 ++++
> >  doc/guides/sample_app_ug/ipsec_secgw.rst | 15 ++++++++++--
> >  examples/ipsec-secgw/ipsec-secgw.c       | 29 +++++++++++++++++++++---
> >  examples/ipsec-secgw/ipsec-secgw.h       |  2 ++
> >  examples/ipsec-secgw/ipsec.c             |  9 ++++++++
> >  examples/ipsec-secgw/ipsec.h             |  2 ++
> >  examples/ipsec-secgw/sa.c                | 18 +++++++++++++++
> >  examples/ipsec-secgw/sad.h               |  7 +++++-
> >  8 files changed, 81 insertions(+), 6 deletions(-)
> >
> > diff --git a/doc/guides/rel_notes/release_21_05.rst
> > b/doc/guides/rel_notes/release_21_05.rst
> > index 4ab2d7500f..9ef2537b1a 100644
> > --- a/doc/guides/rel_notes/release_21_05.rst
> > +++ b/doc/guides/rel_notes/release_21_05.rst
> > @@ -111,6 +111,11 @@ New Features
> >    * Added command to display Rx queue used descriptor count.
> >      ``show port (port_id) rxq (queue_id) desc used count``
> >
> > +* **Updated ipsec-secgw sample application.**
> > +
> > +  * Updated the ``ipsec-secgw`` sample application with UDP encapsulation
> > +    support for NAT Traversal.
> > +
> >
> >  Removed Items
> >  -------------
> > diff --git a/doc/guides/sample_app_ug/ipsec_secgw.rst
> > b/doc/guides/sample_app_ug/ipsec_secgw.rst
> > index 176e292d3f..07bbbb5916 100644
> > --- a/doc/guides/sample_app_ug/ipsec_secgw.rst
> > +++ b/doc/guides/sample_app_ug/ipsec_secgw.rst
> > @@ -500,7 +500,7 @@ The SA rule syntax is shown as follows:
> >
> >      sa <dir> <spi> <cipher_algo> <cipher_key> <auth_algo> <auth_key>
> >      <mode> <src_ip> <dst_ip> <action_type> <port_id> <fallback>
> > -    <flow-direction> <port_id> <queue_id>
> > +    <flow-direction> <port_id> <queue_id> <udp-encap>
> >
> >  where each options means:
> >
> > @@ -709,6 +709,17 @@ where each options means:
> >     * *port_id*: Port ID of the NIC for which the SA is configured.
> >     * *queue_id*: Queue ID to which traffic should be redirected.
> >
> > + ``<udp-encap>``
> > +
> > + * Option to enable IPsec UDP encapsulation for NAT Traversal.
> > +   Only lookaside-protocol-offload mode is supported at the moment.
> > +
> > + * Optional: Yes, it is disabled by default
> > +
> > + * Syntax:
> > +
> > +   * *udp-encap*
> > +
> >  Example SA rules:
> >
> >  .. code-block:: console
> > @@ -1023,4 +1034,4 @@ Available options:
> >  *   ``-h`` Show usage.
> >
> >  If <ipsec_mode> is specified, only tests for that mode will be
> > invoked. For the -list of available modes please refer to run_test.sh.
> > \ No newline at end of file
> > +list of available modes please refer to run_test.sh.
> > diff --git a/examples/ipsec-secgw/ipsec-secgw.c
> > b/examples/ipsec-secgw/ipsec-secgw.c
> > index 20d69ba813..6f6f2aa796 100644
> > --- a/examples/ipsec-secgw/ipsec-secgw.c
> > +++ b/examples/ipsec-secgw/ipsec-secgw.c
> > @@ -184,7 +184,8 @@ static uint64_t frag_ttl_ns = MAX_FRAG_TTL_NS;
> >  /* application wide librte_ipsec/SA parameters */  struct app_sa_prm
> > app_sa_prm = {
> >  			.enable = 0,
> > -			.cache_sz = SA_CACHE_SZ
> > +			.cache_sz = SA_CACHE_SZ,
> > +			.udp_encap = 0
> >  		};
> >  static const char *cfgfile;
> >
> > @@ -360,6 +361,9 @@ prepare_one_packet(struct rte_mbuf *pkt, struct
> ipsec_traffic *t)
> >  	const struct rte_ether_hdr *eth;
> >  	const struct rte_ipv4_hdr *iph4;
> >  	const struct rte_ipv6_hdr *iph6;
> > +	const struct rte_udp_hdr *udp;
> > +	uint16_t ip4_hdr_len;
> > +	uint16_t nat_port;
> >
> >  	eth = rte_pktmbuf_mtod(pkt, const struct rte_ether_hdr *);
> >  	if (eth->ether_type == rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4)) {
> @@
> > -368,9 +372,28 @@ prepare_one_packet(struct rte_mbuf *pkt, struct
> ipsec_traffic *t)
> >  			RTE_ETHER_HDR_LEN);
> >  		adjust_ipv4_pktlen(pkt, iph4, 0);
> >
> > -		if (iph4->next_proto_id == IPPROTO_ESP)
> > +		switch (iph4->next_proto_id) {
> > +		case IPPROTO_ESP:
> >  			t->ipsec.pkts[(t->ipsec.num)++] = pkt;
> > -		else {
> > +			break;
> > +		case IPPROTO_UDP:
> > +			if (app_sa_prm.udp_encap == 1) {
> > +				ip4_hdr_len = ((iph4->version_ihl &
> > +					RTE_IPV4_HDR_IHL_MASK) *
> > +					RTE_IPV4_IHL_MULTIPLIER);
> > +				udp = rte_pktmbuf_mtod_offset(pkt,
> > +					struct rte_udp_hdr *, ip4_hdr_len);
> > +				nat_port =
> rte_cpu_to_be_16(IPSEC_NAT_T_PORT);
> > +				if (udp->src_port == nat_port ||
> > +					udp->dst_port == nat_port){
> > +					t->ipsec.pkts[(t->ipsec.num)++] = pkt;
> > +					pkt->packet_type |=
> > +
> 	RTE_PTYPE_TUNNEL_ESP_IN_UDP;
> > +					break;
> > +				}
> > +			}
> > +		/* Fall through */
> > +		default:
> >  			t->ip4.data[t->ip4.num] = &iph4->next_proto_id;
> >  			t->ip4.pkts[(t->ip4.num)++] = pkt;
> >  		}
> 
> As I understand you don't support UDP tunneling for ipv6 packets for now.
> If so, then it probably worth to notice that in the doc, and in
> parse_sa_tokens() add a check for ipv4.
> Apart from that all seems ok to me.
> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

[Tejasree] Added support for IPv6 packets in v3. Could you please review?