ipsec: huge anti-replay window support
Type: improvement
Since RFC4303 does not specify the anti-replay window size, VPP should
support multiple window size. It is done through a clib_bitmap.
Signed-off-by: Maxime Peim <mpeim@cisco.com>
Change-Id: I3dfe30efd20018e345418bef298ec7cec19b1cfc
diff --git a/src/vnet/ipsec/ipsec_api.c b/src/vnet/ipsec/ipsec_api.c
index 7fc68f6..6e7308d 100644
--- a/src/vnet/ipsec/ipsec_api.c
+++ b/src/vnet/ipsec/ipsec_api.c
@@ -382,10 +382,10 @@
ip_address_decode2 (&mp->entry.tunnel_src, &tun.t_src);
ip_address_decode2 (&mp->entry.tunnel_dst, &tun.t_dst);
- rv = ipsec_sa_add_and_lock (id, spi, proto, crypto_alg, &crypto_key,
- integ_alg, &integ_key, flags, mp->entry.salt,
- htons (mp->entry.udp_src_port),
- htons (mp->entry.udp_dst_port), &tun, &sa_index);
+ rv = ipsec_sa_add_and_lock (
+ id, spi, proto, crypto_alg, &crypto_key, integ_alg, &integ_key, flags,
+ mp->entry.salt, htons (mp->entry.udp_src_port),
+ htons (mp->entry.udp_dst_port), 0, &tun, &sa_index);
out:
/* *INDENT-OFF* */
@@ -456,10 +456,10 @@
ip_address_decode2 (&mp->entry.tunnel_src, &tun.t_src);
ip_address_decode2 (&mp->entry.tunnel_dst, &tun.t_dst);
- rv = ipsec_sa_add_and_lock (
- id, spi, proto, crypto_alg, &crypto_key, integ_alg, &integ_key, flags,
- mp->entry.salt, htons (mp->entry.udp_src_port),
- htons (mp->entry.udp_dst_port), &tun, &sa_index);
+ rv = ipsec_sa_add_and_lock (
+ id, spi, proto, crypto_alg, &crypto_key, integ_alg, &integ_key, flags,
+ mp->entry.salt, htons (mp->entry.udp_src_port),
+ htons (mp->entry.udp_dst_port), 0, &tun, &sa_index);
out:
/* *INDENT-OFF* */
@@ -514,10 +514,10 @@
ipsec_key_decode (&entry->crypto_key, &crypto_key);
ipsec_key_decode (&entry->integrity_key, &integ_key);
- return ipsec_sa_add_and_lock (id, spi, proto, crypto_alg, &crypto_key,
- integ_alg, &integ_key, flags, entry->salt,
- htons (entry->udp_src_port),
- htons (entry->udp_dst_port), &tun, sa_index);
+ return ipsec_sa_add_and_lock (
+ id, spi, proto, crypto_alg, &crypto_key, integ_alg, &integ_key, flags,
+ entry->salt, htons (entry->udp_src_port), htons (entry->udp_dst_port), 0,
+ &tun, sa_index);
}
static void
@@ -543,6 +543,56 @@
{ rmp->stat_index = htonl (sa_index); });
}
+static int
+ipsec_sad_entry_add_v4 (const vl_api_ipsec_sad_entry_v4_t *entry,
+ u32 *sa_index)
+{
+ ipsec_key_t crypto_key, integ_key;
+ ipsec_crypto_alg_t crypto_alg;
+ ipsec_integ_alg_t integ_alg;
+ ipsec_protocol_t proto;
+ ipsec_sa_flags_t flags;
+ u32 id, spi;
+ tunnel_t tun = { 0 };
+ int rv;
+
+ id = ntohl (entry->sad_id);
+ spi = ntohl (entry->spi);
+
+ rv = ipsec_proto_decode (entry->protocol, &proto);
+
+ if (rv)
+ return rv;
+
+ rv = ipsec_crypto_algo_decode (entry->crypto_algorithm, &crypto_alg);
+
+ if (rv)
+ return rv;
+
+ rv = ipsec_integ_algo_decode (entry->integrity_algorithm, &integ_alg);
+
+ if (rv)
+ return rv;
+
+ flags = ipsec_sa_flags_decode (entry->flags);
+
+ if (flags & IPSEC_SA_FLAG_IS_TUNNEL)
+ {
+ rv = tunnel_decode (&entry->tunnel, &tun);
+
+ if (rv)
+ return rv;
+ }
+
+ ipsec_key_decode (&entry->crypto_key, &crypto_key);
+ ipsec_key_decode (&entry->integrity_key, &integ_key);
+
+ return ipsec_sa_add_and_lock (
+ id, spi, proto, crypto_alg, &crypto_key, integ_alg, &integ_key, flags,
+ entry->salt, htons (entry->udp_src_port), htons (entry->udp_dst_port),
+ ntohl (entry->anti_replay_window_size), &tun, sa_index);
+}
+
static void
vl_api_ipsec_sad_entry_del_t_handler (vl_api_ipsec_sad_entry_del_t *mp)
{
@@ -568,6 +618,19 @@
}
static void
+vl_api_ipsec_sad_entry_add_v2_t_handler (vl_api_ipsec_sad_entry_add_v2_t *mp)
+{
+ vl_api_ipsec_sad_entry_add_reply_t *rmp;
+ u32 sa_index = ~0;
+ int rv;
+
+ rv = ipsec_sad_entry_add_v4 (&mp->entry, &sa_index);
+
+ REPLY_MACRO2 (VL_API_IPSEC_SAD_ENTRY_ADD_V2_REPLY,
+ { rmp->stat_index = htonl (sa_index); });
+}
+
+static void
vl_api_ipsec_sad_entry_update_t_handler (vl_api_ipsec_sad_entry_update_t *mp)
{
vl_api_ipsec_sad_entry_update_reply_t *rmp;
@@ -953,7 +1016,10 @@
mp->last_seq_inbound |= (u64) (clib_host_to_net_u32 (sa->seq_hi));
}
if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
- mp->replay_window = clib_host_to_net_u64 (sa->replay_window);
+ {
+ mp->replay_window =
+ clib_host_to_net_u64 (ipsec_sa_anti_replay_get_64b_window (sa));
+ }
mp->stat_index = clib_host_to_net_u32 (sa->stat_index);
@@ -1040,7 +1106,10 @@
mp->last_seq_inbound |= (u64) (clib_host_to_net_u32 (sa->seq_hi));
}
if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
- mp->replay_window = clib_host_to_net_u64 (sa->replay_window);
+ {
+ mp->replay_window =
+ clib_host_to_net_u64 (ipsec_sa_anti_replay_get_64b_window (sa));
+ }
mp->stat_index = clib_host_to_net_u32 (sa->stat_index);
@@ -1120,7 +1189,10 @@
mp->last_seq_inbound |= (u64) (clib_host_to_net_u32 (sa->seq_hi));
}
if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
- mp->replay_window = clib_host_to_net_u64 (sa->replay_window);
+ {
+ mp->replay_window =
+ clib_host_to_net_u64 (ipsec_sa_anti_replay_get_64b_window (sa));
+ }
mp->stat_index = clib_host_to_net_u32 (sa->stat_index);
@@ -1200,7 +1272,10 @@
mp->last_seq_inbound |= (u64) (clib_host_to_net_u32 (sa->seq_hi));
}
if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
- mp->replay_window = clib_host_to_net_u64 (sa->replay_window);
+ {
+ mp->replay_window =
+ clib_host_to_net_u64 (ipsec_sa_anti_replay_get_64b_window (sa));
+ }
mp->thread_index = clib_host_to_net_u32 (sa->thread_index);
mp->stat_index = clib_host_to_net_u32 (sa->stat_index);
@@ -1227,8 +1302,95 @@
ipsec_sa_walk (send_ipsec_sa_v4_details, &ctx);
}
+static walk_rc_t
+send_ipsec_sa_v5_details (ipsec_sa_t *sa, void *arg)
+{
+ ipsec_dump_walk_ctx_t *ctx = arg;
+ vl_api_ipsec_sa_v5_details_t *mp;
+
+ mp = vl_msg_api_alloc (sizeof (*mp));
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = ntohs (REPLY_MSG_ID_BASE + VL_API_IPSEC_SA_V5_DETAILS);
+ mp->context = ctx->context;
+
+ mp->entry.sad_id = htonl (sa->id);
+ mp->entry.spi = htonl (sa->spi);
+ mp->entry.protocol = ipsec_proto_encode (sa->protocol);
+
+ mp->entry.crypto_algorithm = ipsec_crypto_algo_encode (sa->crypto_alg);
+ ipsec_key_encode (&sa->crypto_key, &mp->entry.crypto_key);
+
+ mp->entry.integrity_algorithm = ipsec_integ_algo_encode (sa->integ_alg);
+ ipsec_key_encode (&sa->integ_key, &mp->entry.integrity_key);
+
+ mp->entry.flags = ipsec_sad_flags_encode (sa);
+ mp->entry.salt = clib_host_to_net_u32 (sa->salt);
+
+ if (ipsec_sa_is_set_IS_PROTECT (sa))
+ {
+ ipsec_sa_dump_match_ctx_t ctx = {
+ .sai = sa - ipsec_sa_pool,
+ .sw_if_index = ~0,
+ };
+ ipsec_tun_protect_walk (ipsec_sa_dump_match_sa, &ctx);
+
+ mp->sw_if_index = htonl (ctx.sw_if_index);
+ }
+ else
+ mp->sw_if_index = ~0;
+
+ if (ipsec_sa_is_set_IS_TUNNEL (sa))
+ tunnel_encode (&sa->tunnel, &mp->entry.tunnel);
+
+ if (ipsec_sa_is_set_UDP_ENCAP (sa))
+ {
+ mp->entry.udp_src_port = sa->udp_hdr.src_port;
+ mp->entry.udp_dst_port = sa->udp_hdr.dst_port;
+ }
+
+ mp->seq_outbound = clib_host_to_net_u64 (((u64) sa->seq));
+ mp->last_seq_inbound = clib_host_to_net_u64 (((u64) sa->seq));
+ if (ipsec_sa_is_set_USE_ESN (sa))
+ {
+ mp->seq_outbound |= (u64) (clib_host_to_net_u32 (sa->seq_hi));
+ mp->last_seq_inbound |= (u64) (clib_host_to_net_u32 (sa->seq_hi));
+ }
+ if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
+ {
+ mp->replay_window =
+ clib_host_to_net_u64 (ipsec_sa_anti_replay_get_64b_window (sa));
+
+ mp->entry.anti_replay_window_size =
+ clib_host_to_net_u32 (IPSEC_SA_ANTI_REPLAY_WINDOW_SIZE (sa));
+ }
+
+ mp->thread_index = clib_host_to_net_u32 (sa->thread_index);
+ mp->stat_index = clib_host_to_net_u32 (sa->stat_index);
+
+ vl_api_send_msg (ctx->reg, (u8 *) mp);
+
+ return (WALK_CONTINUE);
+}
+
static void
-vl_api_ipsec_backend_dump_t_handler (vl_api_ipsec_backend_dump_t * mp)
+vl_api_ipsec_sa_v5_dump_t_handler (vl_api_ipsec_sa_v5_dump_t *mp)
+{
+ vl_api_registration_t *reg;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ ipsec_dump_walk_ctx_t ctx = {
+ .reg = reg,
+ .context = mp->context,
+ };
+
+ ipsec_sa_walk (send_ipsec_sa_v5_details, &ctx);
+}
+
+static void
+vl_api_ipsec_backend_dump_t_handler (vl_api_ipsec_backend_dump_t *mp)
{
vl_api_registration_t *rp;
ipsec_main_t *im = &ipsec_main;