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authorNeale Ranns <nranns@cisco.com>2020-01-02 04:06:10 +0000
committerOle Tr�an <otroan@employees.org>2020-11-02 08:49:08 +0000
commit041add7d12217494934b651e4e38b5eab5216ddc (patch)
tree42f6ed8c3e4477b7c7cf93b19f227e4fc0afb4cb /src/vnet/ipsec/ipsec_api.c
parent62877029aac3e05a1e1db579aeaad42bca5a70a4 (diff)
ipsec: Tunnel SA DSCP behaviour
Type: feature - use tunnel_encap_decap_flags to control the copying of DSCP/ECN/etc during IPSEC tunnel mode encap. - use DSCP value to have fixed encap value. Signed-off-by: Neale Ranns <nranns@cisco.com> Change-Id: If4f51fd4c1dcbb0422aac9bd078e5c14af5bf11f
Diffstat (limited to 'src/vnet/ipsec/ipsec_api.c')
-rw-r--r--src/vnet/ipsec/ipsec_api.c188
1 files changed, 185 insertions, 3 deletions
diff --git a/src/vnet/ipsec/ipsec_api.c b/src/vnet/ipsec/ipsec_api.c
index f623cced0c7..7003791c8c8 100644
--- a/src/vnet/ipsec/ipsec_api.c
+++ b/src/vnet/ipsec/ipsec_api.c
@@ -28,6 +28,7 @@
#include <vnet/tunnel/tunnel_types_api.h>
#include <vnet/fib/fib.h>
#include <vnet/ipip/ipip.h>
+#include <vnet/tunnel/tunnel_types_api.h>
#include <vnet/vnet_msg_enum.h>
@@ -58,7 +59,9 @@ _(IPSEC_SPD_ADD_DEL, ipsec_spd_add_del) \
_(IPSEC_INTERFACE_ADD_DEL_SPD, ipsec_interface_add_del_spd) \
_(IPSEC_SPD_ENTRY_ADD_DEL, ipsec_spd_entry_add_del) \
_(IPSEC_SAD_ENTRY_ADD_DEL, ipsec_sad_entry_add_del) \
+_(IPSEC_SAD_ENTRY_ADD_DEL_V2, ipsec_sad_entry_add_del_v2) \
_(IPSEC_SA_DUMP, ipsec_sa_dump) \
+_(IPSEC_SA_V2_DUMP, ipsec_sa_v2_dump) \
_(IPSEC_SPDS_DUMP, ipsec_spds_dump) \
_(IPSEC_SPD_DUMP, ipsec_spd_dump) \
_(IPSEC_SPD_INTERFACE_DUMP, ipsec_spd_interface_dump) \
@@ -380,7 +383,10 @@ static void vl_api_ipsec_sad_entry_add_del_t_handler
crypto_alg, &crypto_key,
integ_alg, &integ_key, flags,
0, mp->entry.salt, &tun_src, &tun_dst,
- &sa_index, htons (mp->entry.udp_src_port),
+ TUNNEL_ENCAP_DECAP_FLAG_NONE,
+ IP_DSCP_CS0,
+ &sa_index,
+ htons (mp->entry.udp_src_port),
htons (mp->entry.udp_dst_port));
else
rv = ipsec_sa_unlock_id (id);
@@ -398,6 +404,83 @@ out:
/* *INDENT-ON* */
}
+static void vl_api_ipsec_sad_entry_add_del_v2_t_handler
+ (vl_api_ipsec_sad_entry_add_del_v2_t * mp)
+{
+ vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main ();
+ vl_api_ipsec_sad_entry_add_del_v2_reply_t *rmp;
+ ip46_address_t tun_src = { }, tun_dst =
+ {
+ };
+ tunnel_encap_decap_flags_t tunnel_flags;
+ 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, sa_index = ~0;
+ int rv;
+
+#if WITH_LIBSSL > 0
+
+ id = ntohl (mp->entry.sad_id);
+ spi = ntohl (mp->entry.spi);
+
+ rv = ipsec_proto_decode (mp->entry.protocol, &proto);
+
+ if (rv)
+ goto out;
+
+ rv = ipsec_crypto_algo_decode (mp->entry.crypto_algorithm, &crypto_alg);
+
+ if (rv)
+ goto out;
+
+ rv = ipsec_integ_algo_decode (mp->entry.integrity_algorithm, &integ_alg);
+
+ if (rv)
+ goto out;
+
+ rv =
+ tunnel_encap_decap_flags_decode (mp->entry.tunnel_flags, &tunnel_flags);
+
+ if (rv)
+ goto out;
+
+ ipsec_key_decode (&mp->entry.crypto_key, &crypto_key);
+ ipsec_key_decode (&mp->entry.integrity_key, &integ_key);
+
+ flags = ipsec_sa_flags_decode (mp->entry.flags);
+
+ ip_address_decode (&mp->entry.tunnel_src, &tun_src);
+ ip_address_decode (&mp->entry.tunnel_dst, &tun_dst);
+
+ if (mp->is_add)
+ rv = ipsec_sa_add_and_lock (id, spi, proto,
+ crypto_alg, &crypto_key,
+ integ_alg, &integ_key, flags,
+ 0, mp->entry.salt, &tun_src, &tun_dst,
+ tunnel_flags,
+ ip_dscp_decode (mp->entry.dscp),
+ &sa_index,
+ htons (mp->entry.udp_src_port),
+ htons (mp->entry.udp_dst_port));
+ else
+ rv = ipsec_sa_unlock_id (id);
+
+#else
+ rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+out:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_IPSEC_SAD_ENTRY_ADD_DEL_V2_REPLY,
+ {
+ rmp->stat_index = htonl (sa_index);
+ });
+ /* *INDENT-ON* */
+}
+
static void
send_ipsec_spds_details (ipsec_spd_t * spd, vl_api_registration_t * reg,
u32 context)
@@ -671,7 +754,9 @@ vl_api_ipsec_tunnel_if_add_del_t_handler (vl_api_ipsec_tunnel_if_add_del_t *
&integ_key,
(flags | IPSEC_SA_FLAG_IS_INBOUND),
ntohl (mp->tx_table_id),
- mp->salt, &remote_ip, &local_ip, NULL,
+ mp->salt, &remote_ip, &local_ip,
+ TUNNEL_ENCAP_DECAP_FLAG_NONE,
+ IP_DSCP_CS0, NULL,
IPSEC_UDP_PORT_NONE, IPSEC_UDP_PORT_NONE);
if (rv)
@@ -686,7 +771,9 @@ vl_api_ipsec_tunnel_if_add_del_t_handler (vl_api_ipsec_tunnel_if_add_del_t *
&integ_key,
flags,
ntohl (mp->tx_table_id),
- mp->salt, &local_ip, &remote_ip, NULL,
+ mp->salt, &local_ip, &remote_ip,
+ TUNNEL_ENCAP_DECAP_FLAG_NONE,
+ IP_DSCP_CS0, NULL,
IPSEC_UDP_PORT_NONE, IPSEC_UDP_PORT_NONE);
if (rv)
@@ -905,6 +992,101 @@ vl_api_ipsec_sa_dump_t_handler (vl_api_ipsec_sa_dump_t * mp)
#endif
}
+static walk_rc_t
+send_ipsec_sa_v2_details (ipsec_sa_t * sa, void *arg)
+{
+ ipsec_dump_walk_ctx_t *ctx = arg;
+ vl_api_ipsec_sa_v2_details_t *mp;
+ ipsec_main_t *im = &ipsec_main;
+
+ mp = vl_msg_api_alloc (sizeof (*mp));
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = ntohs (VL_API_IPSEC_SA_V2_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.tx_table_id =
+ htonl (fib_table_get_table_id (sa->tx_fib_index, FIB_PROTOCOL_IP4));
+
+ 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 - im->sad,
+ .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))
+ {
+ ip_address_encode (&sa->tunnel_src_addr, IP46_TYPE_ANY,
+ &mp->entry.tunnel_src);
+ ip_address_encode (&sa->tunnel_dst_addr, IP46_TYPE_ANY,
+ &mp->entry.tunnel_dst);
+ }
+ 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->entry.tunnel_flags = tunnel_encap_decap_flags_encode (sa->tunnel_flags);
+ mp->entry.dscp = ip_dscp_encode (sa->dscp);
+
+ mp->seq_outbound = clib_host_to_net_u64 (((u64) sa->seq));
+ mp->last_seq_inbound = clib_host_to_net_u64 (((u64) sa->last_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->last_seq_hi));
+ }
+ if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
+ mp->replay_window = clib_host_to_net_u64 (sa->replay_window);
+
+ 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_sa_v2_dump_t_handler (vl_api_ipsec_sa_dump_t * mp)
+{
+ vl_api_registration_t *reg;
+
+#if WITH_LIBSSL > 0
+ 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_v2_details, &ctx);
+
+#else
+ clib_warning ("unimplemented");
+#endif
+}
+
static void
vl_api_ipsec_tunnel_if_set_sa_t_handler (vl_api_ipsec_tunnel_if_set_sa_t * mp)
{