From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 2517EA0C55; Wed, 13 Oct 2021 14:25:49 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id AAECB41162; Wed, 13 Oct 2021 14:25:42 +0200 (CEST) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by mails.dpdk.org (Postfix) with ESMTP id 21C5540E64 for ; Wed, 13 Oct 2021 14:25:40 +0200 (CEST) X-IronPort-AV: E=McAfee;i="6200,9189,10135"; a="214564500" X-IronPort-AV: E=Sophos;i="5.85,370,1624345200"; d="scan'208";a="214564500" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Oct 2021 05:25:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,370,1624345200"; d="scan'208";a="524607724" Received: from silpixa00400884.ir.intel.com ([10.243.22.82]) by orsmga001.jf.intel.com with ESMTP; 13 Oct 2021 05:25:34 -0700 From: Radu Nicolau To: Konstantin Ananyev , Bernard Iremonger , Vladimir Medvedkin Cc: dev@dpdk.org, mdr@ashroe.eu, bruce.richardson@intel.com, roy.fan.zhang@intel.com, hemant.agrawal@nxp.com, gakhil@marvell.com, anoobj@marvell.com, declan.doherty@intel.com, abhijit.sinha@intel.com, daniel.m.buckley@intel.com, marchana@marvell.com, ktejasree@marvell.com, matan@nvidia.com, Radu Nicolau Date: Wed, 13 Oct 2021 13:13:25 +0100 Message-Id: <20211013121331.300245-5-radu.nicolau@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211013121331.300245-1-radu.nicolau@intel.com> References: <20210713133542.3550525-1-radu.nicolau@intel.com> <20211013121331.300245-1-radu.nicolau@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v9 04/10] ipsec: add support for NAT-T X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add support for the IPsec NAT-Traversal use case for Tunnel mode packets. Signed-off-by: Declan Doherty Signed-off-by: Radu Nicolau Signed-off-by: Abhijit Sinha Signed-off-by: Daniel Martin Buckley Acked-by: Fan Zhang --- doc/guides/prog_guide/ipsec_lib.rst | 2 ++ doc/guides/rel_notes/release_21_11.rst | 1 + lib/ipsec/esp_outb.c | 9 ++++++ lib/ipsec/rte_ipsec_sa.h | 9 +++++- lib/ipsec/sa.c | 39 ++++++++++++++++++++++---- 5 files changed, 54 insertions(+), 6 deletions(-) diff --git a/doc/guides/prog_guide/ipsec_lib.rst b/doc/guides/prog_guide/ipsec_lib.rst index 93e213bf36..af51ff8131 100644 --- a/doc/guides/prog_guide/ipsec_lib.rst +++ b/doc/guides/prog_guide/ipsec_lib.rst @@ -313,6 +313,8 @@ Supported features * ESN and replay window. +* NAT-T / UDP encapsulated ESP. + * algorithms: 3DES-CBC, AES-CBC, AES-CTR, AES-GCM, AES_CCM, CHACHA20_POLY1305, AES_GMAC, HMAC-SHA1, NULL. diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst index 1748c2db05..e9fb169d44 100644 --- a/doc/guides/rel_notes/release_21_11.rst +++ b/doc/guides/rel_notes/release_21_11.rst @@ -157,6 +157,7 @@ New Features * **IPsec library new features.** * Added support for AEAD algorithms AES_CCM, CHACHA20_POLY1305 and AES_GMAC. + * Added support for NAT-T / UDP encapsulated ESP Removed Items diff --git a/lib/ipsec/esp_outb.c b/lib/ipsec/esp_outb.c index a3f77469c3..0e3314b358 100644 --- a/lib/ipsec/esp_outb.c +++ b/lib/ipsec/esp_outb.c @@ -5,6 +5,7 @@ #include #include #include +#include #include #include @@ -185,6 +186,14 @@ outb_tun_pkt_prepare(struct rte_ipsec_sa *sa, rte_be64_t sqc, /* copy tunnel pkt header */ rte_memcpy(ph, sa->hdr, sa->hdr_len); + /* if UDP encap is enabled update the dgram_len */ + if (sa->type & RTE_IPSEC_SATP_NATT_ENABLE) { + struct rte_udp_hdr *udph = (struct rte_udp_hdr *) + (ph - sizeof(struct rte_udp_hdr)); + udph->dgram_len = rte_cpu_to_be_16(mb->pkt_len - sqh_len - + sa->hdr_l3_off - sa->hdr_len); + } + /* update original and new ip header fields */ update_tun_outb_l3hdr(sa, ph + sa->hdr_l3_off, ph + hlen, mb->pkt_len - sqh_len, sa->hdr_l3_off, sqn_low16(sqc)); diff --git a/lib/ipsec/rte_ipsec_sa.h b/lib/ipsec/rte_ipsec_sa.h index cf51ad8338..3a22705055 100644 --- a/lib/ipsec/rte_ipsec_sa.h +++ b/lib/ipsec/rte_ipsec_sa.h @@ -78,6 +78,7 @@ struct rte_ipsec_sa_prm { * - for TUNNEL outer IP version (IPv4/IPv6) * - are SA SQN operations 'atomic' * - ESN enabled/disabled + * - NAT-T UDP encapsulated (TUNNEL mode only) * ... */ @@ -89,7 +90,8 @@ enum { RTE_SATP_LOG2_SQN = RTE_SATP_LOG2_MODE + 2, RTE_SATP_LOG2_ESN, RTE_SATP_LOG2_ECN, - RTE_SATP_LOG2_DSCP + RTE_SATP_LOG2_DSCP, + RTE_SATP_LOG2_NATT }; #define RTE_IPSEC_SATP_IPV_MASK (1ULL << RTE_SATP_LOG2_IPV) @@ -125,6 +127,11 @@ enum { #define RTE_IPSEC_SATP_DSCP_DISABLE (0ULL << RTE_SATP_LOG2_DSCP) #define RTE_IPSEC_SATP_DSCP_ENABLE (1ULL << RTE_SATP_LOG2_DSCP) +#define RTE_IPSEC_SATP_NATT_MASK (1ULL << RTE_SATP_LOG2_NATT) +#define RTE_IPSEC_SATP_NATT_DISABLE (0ULL << RTE_SATP_LOG2_NATT) +#define RTE_IPSEC_SATP_NATT_ENABLE (1ULL << RTE_SATP_LOG2_NATT) + + /** * get type of given SA * @return diff --git a/lib/ipsec/sa.c b/lib/ipsec/sa.c index 720e0f365b..2830506385 100644 --- a/lib/ipsec/sa.c +++ b/lib/ipsec/sa.c @@ -5,6 +5,7 @@ #include #include #include +#include #include #include @@ -217,6 +218,10 @@ fill_sa_type(const struct rte_ipsec_sa_prm *prm, uint64_t *type) } else return -EINVAL; + /* check for UDP encapsulation flag */ + if (prm->ipsec_xform.options.udp_encap == 1) + tp |= RTE_IPSEC_SATP_NATT_ENABLE; + /* check for ESN flag */ if (prm->ipsec_xform.options.esn == 0) tp |= RTE_IPSEC_SATP_ESN_DISABLE; @@ -348,20 +353,36 @@ esp_outb_init(struct rte_ipsec_sa *sa, uint32_t hlen) /* * Init ESP outbound tunnel specific things. */ -static void +static int esp_outb_tun_init(struct rte_ipsec_sa *sa, const struct rte_ipsec_sa_prm *prm) { sa->proto = prm->tun.next_proto; sa->hdr_len = prm->tun.hdr_len; sa->hdr_l3_off = prm->tun.hdr_l3_off; + if (prm->tun.hdr_len > IPSEC_MAX_HDR_SIZE) + return -EINVAL; + memcpy(sa->hdr, prm->tun.hdr, prm->tun.hdr_len); + + /* insert UDP header if UDP encapsulation is inabled */ + if (sa->type & RTE_IPSEC_SATP_NATT_ENABLE) { + struct rte_udp_hdr *udph = (struct rte_udp_hdr *) + &sa->hdr[prm->tun.hdr_len]; + sa->hdr_len += sizeof(struct rte_udp_hdr); + if (sa->hdr_len > IPSEC_MAX_HDR_SIZE) + return -EINVAL; + udph->src_port = prm->ipsec_xform.udp.sport; + udph->dst_port = prm->ipsec_xform.udp.dport; + udph->dgram_cksum = 0; + } + /* update l2_len and l3_len fields for outbound mbuf */ sa->tx_offload.val = rte_mbuf_tx_offload(sa->hdr_l3_off, sa->hdr_len - sa->hdr_l3_off, 0, 0, 0, 0, 0); - memcpy(sa->hdr, prm->tun.hdr, sa->hdr_len); - esp_outb_init(sa, sa->hdr_len); + + return 0; } /* @@ -372,7 +393,8 @@ esp_sa_init(struct rte_ipsec_sa *sa, const struct rte_ipsec_sa_prm *prm, const struct crypto_xform *cxf) { static const uint64_t msk = RTE_IPSEC_SATP_DIR_MASK | - RTE_IPSEC_SATP_MODE_MASK; + RTE_IPSEC_SATP_MODE_MASK | + RTE_IPSEC_SATP_NATT_MASK; if (prm->ipsec_xform.options.ecn) sa->tos_mask |= RTE_IPV4_HDR_ECN_MASK; @@ -475,10 +497,17 @@ esp_sa_init(struct rte_ipsec_sa *sa, const struct rte_ipsec_sa_prm *prm, case (RTE_IPSEC_SATP_DIR_IB | RTE_IPSEC_SATP_MODE_TRANS): esp_inb_init(sa); break; + case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV4 | + RTE_IPSEC_SATP_NATT_ENABLE): + case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV6 | + RTE_IPSEC_SATP_NATT_ENABLE): case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV4): case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TUNLV6): - esp_outb_tun_init(sa, prm); + if (esp_outb_tun_init(sa, prm)) + return -EINVAL; break; + case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TRANS | + RTE_IPSEC_SATP_NATT_ENABLE): case (RTE_IPSEC_SATP_DIR_OB | RTE_IPSEC_SATP_MODE_TRANS): esp_outb_init(sa, 0); break; -- 2.25.1