*/
#include <vnet/ipsec/ipsec_tun.h>
+#include <vnet/ipsec/ipsec_itf.h>
#include <vnet/ipsec/esp.h>
#include <vnet/udp/udp.h>
#include <vnet/adj/adj_delegate.h>
+#include <vnet/adj/adj_midchain.h>
#include <vnet/teib/teib.h>
/**
{
if (AF_IP4 == af)
{
- udp_register_dst_port (vlib_get_main (),
- UDP_DST_PORT_ipsec,
- ipsec4_tun_input_node.index, 1);
+ ipsec_register_udp_port (UDP_DST_PORT_ipsec);
ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP,
ipsec4_tun_input_node.index);
}
{
if (AF_IP4 == af)
{
- udp_unregister_dst_port (vlib_get_main (), UDP_DST_PORT_ipsec, 1);
+ ipsec_unregister_udp_port (UDP_DST_PORT_ipsec);
ip4_unregister_protocol (IP_PROTOCOL_IPSEC_ESP);
}
else
}
}
-static void
-ipsec_tun_protect_add_adj (adj_index_t ai, index_t sai)
-{
- vec_validate_init_empty (ipsec_tun_protect_sa_by_adj_index, ai,
- INDEX_INVALID);
-
- ipsec_tun_protect_sa_by_adj_index[ai] = sai;
-}
-
static inline const ipsec_tun_protect_t *
ipsec_tun_protect_from_const_base (const adj_delegate_t * ad)
{
return (pool_elt_at_index (ipsec_tun_protect_pool, ad->ad_index));
}
+static u32
+ipsec_tun_protect_get_adj_next (vnet_link_t linkt,
+ const ipsec_tun_protect_t * itp)
+{
+ ipsec_main_t *im;
+ ipsec_sa_t *sa;
+ bool is_ip4;
+ u32 next;
+
+
+ if (itp->itp_flags & IPSEC_PROTECT_ITF)
+ is_ip4 = linkt == VNET_LINK_IP4;
+ else
+ is_ip4 = ip46_address_is_ip4 (&itp->itp_tun.src);
+
+ sa = ipsec_sa_get (itp->itp_out_sa);
+ im = &ipsec_main;
+
+ if (sa->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
+ sa->integ_alg == IPSEC_INTEG_ALG_NONE)
+ next = (is_ip4 ?
+ im->esp4_no_crypto_tun_node_index :
+ im->esp6_no_crypto_tun_node_index);
+ else if (itp->itp_flags & IPSEC_PROTECT_L2)
+ next = (is_ip4 ?
+ im->esp4_encrypt_l2_tun_node_index :
+ im->esp6_encrypt_l2_tun_node_index);
+ else
+ next = (is_ip4 ?
+ im->esp4_encrypt_tun_node_index :
+ im->esp6_encrypt_tun_node_index);
+
+ return (next);
+}
+
static void
-ipsec_tun_protect_feature_set (ipsec_tun_protect_t * itp, u8 enable)
+ipsec_tun_protect_add_adj (adj_index_t ai, const ipsec_tun_protect_t * itp)
{
- ITP_DBG2 ("%s on %U", (enable ? "enable" : "disable"),
- format_vnet_sw_if_index_name, vnet_get_main (),
- itp->itp_sw_if_index);
+ vec_validate_init_empty (ipsec_tun_protect_sa_by_adj_index, ai,
+ INDEX_INVALID);
- if (itp->itp_flags & IPSEC_PROTECT_L2)
+ if (NULL == itp)
{
- /* l2-GRE only supported by the vnet ipsec code */
- vnet_feature_enable_disable ("ethernet-output",
- (ip46_address_is_ip4 (&itp->itp_tun.src) ?
- "esp4-encrypt-tun" :
- "esp6-encrypt-tun"),
- itp->itp_sw_if_index, enable, NULL, 0);
+ ipsec_tun_protect_sa_by_adj_index[ai] = INDEX_INVALID;
+ adj_nbr_midchain_reset_next_node (ai);
}
else
{
- u32 fi4, fi6, sai;
- ipsec_main_t *im;
- ipsec_sa_t *sa;
-
- im = &ipsec_main;
- sai = itp->itp_out_sa;
- sa = ipsec_sa_get (sai);
-
- if (sa->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
- sa->integ_alg == IPSEC_INTEG_ALG_NONE)
- {
- fi4 = im->esp4_no_crypto_tun_feature_index;
- fi6 = im->esp6_no_crypto_tun_feature_index;
- }
- else
- {
- if (ip46_address_is_ip4 (&itp->itp_tun.src))
- {
- /* tunnel destination is v4 so we need the Xo4 indexes */
- fi4 = im->esp44_encrypt_tun_feature_index;
- fi6 = im->esp64_encrypt_tun_feature_index;
- }
- else
- {
- /* tunnel destination is v6 so we need the Xo6 indexes */
- fi4 = im->esp46_encrypt_tun_feature_index;
- fi6 = im->esp66_encrypt_tun_feature_index;
- }
- }
-
- vnet_feature_enable_disable_with_index
- (vnet_get_feature_arc_index ("ip4-output"),
- fi4, itp->itp_sw_if_index, enable, NULL, 0);
- vnet_feature_enable_disable_with_index
- (vnet_get_feature_arc_index ("ip6-output"),
- fi6, itp->itp_sw_if_index, enable, NULL, 0);
+ ipsec_tun_protect_sa_by_adj_index[ai] = itp->itp_out_sa;
+ adj_nbr_midchain_update_next_node
+ (ai, ipsec_tun_protect_get_adj_next (adj_get_link_type (ai), itp));
}
}
ipsec_tun_protect_t *itp = arg;
adj_delegate_add (adj_get (ai), ipsec_tun_adj_delegate_type,
itp - ipsec_tun_protect_pool);
- ipsec_tun_protect_add_adj (ai, itp->itp_out_sa);
+ ipsec_tun_protect_add_adj (ai, itp);
+
+ if (itp->itp_flags & IPSEC_PROTECT_ITF)
+ ipsec_itf_adj_stack (ai, itp->itp_out_sa);
return (ADJ_WALK_RC_CONTINUE);
}
{
if (INDEX_INVALID == idi->id_itp)
{
- ipsec_tun_protect_feature_set (itp, 1);
+ // ipsec_tun_protect_feature_set (itp, 1);
}
idi->id_itp = itp - ipsec_tun_protect_pool;
* enable the encrypt feature for egress if this is the first addition
* on this interface
*/
- ipsec_tun_protect_feature_set (itp, 1);
+ // ipsec_tun_protect_feature_set (itp, 1);
}
hash_set_mem (idi->id_hash, itp->itp_key, itp - ipsec_tun_protect_pool);
/* *INDENT-OFF* */
FOR_EACH_IPSEC_PROTECT_INPUT_SA(itp, sa,
({
- if (ip46_address_is_ip4 (&itp->itp_crypto.dst))
- {
- ipsec4_tunnel_key_t key = {
- .remote_ip = itp->itp_crypto.dst.ip4,
- .spi = clib_host_to_net_u32 (sa->spi),
- };
- if (hash_get(im->tun4_protect_by_key, key.as_u64))
- {
- hash_unset (im->tun4_protect_by_key, key.as_u64);
- ipsec_tun_unregister_nodes(AF_IP4);
- }
- }
- else
- {
- ipsec6_tunnel_key_t key = {
- .remote_ip = itp->itp_crypto.dst.ip6,
- .spi = clib_host_to_net_u32 (sa->spi),
- };
- if (hash_get_mem(im->tun6_protect_by_key, &key))
- {
- hash_unset_mem_free (&im->tun6_protect_by_key, &key);
- ipsec_tun_unregister_nodes(AF_IP6);
- }
- }
- }))
+ if (ip46_address_is_ip4 (&itp->itp_crypto.dst))
+ {
+ ipsec4_tunnel_key_t key = {
+ .remote_ip = itp->itp_crypto.dst.ip4,
+ .spi = clib_host_to_net_u32 (sa->spi),
+ };
+ if (hash_get(im->tun4_protect_by_key, key.as_u64))
+ {
+ hash_unset (im->tun4_protect_by_key, key.as_u64);
+ ipsec_tun_unregister_nodes(AF_IP4);
+ }
+ }
+ else
+ {
+ ipsec6_tunnel_key_t key = {
+ .remote_ip = itp->itp_crypto.dst.ip6,
+ .spi = clib_host_to_net_u32 (sa->spi),
+ };
+ if (hash_get_mem(im->tun6_protect_by_key, &key))
+ {
+ hash_unset_mem_free (&im->tun6_protect_by_key, &key);
+ ipsec_tun_unregister_nodes(AF_IP6);
+ }
+ }
+ }));
/* *INDENT-ON* */
}
static adj_walk_rc_t
ipsec_tun_protect_adj_remove (adj_index_t ai, void *arg)
{
+ ipsec_tun_protect_t *itp = arg;
+
adj_delegate_remove (ai, ipsec_tun_adj_delegate_type);
- ipsec_tun_protect_add_adj (ai, INDEX_INVALID);
+ ipsec_tun_protect_add_adj (ai, NULL);
+
+ if (itp->itp_flags & IPSEC_PROTECT_ITF)
+ ipsec_itf_adj_unstack (ai);
return (ADJ_WALK_RC_CONTINUE);
}
if (vnet_sw_interface_is_p2p (vnet_get_main (), itp->itp_sw_if_index))
{
- ipsec_tun_protect_feature_set (itp, 0);
+ // ipsec_tun_protect_feature_set (itp, 0);
idi->id_itp = INDEX_INVALID;
FOR_EACH_FIB_IP_PROTOCOL (nh_proto)
if (0 == hash_elts (idi->id_hash))
{
- ipsec_tun_protect_feature_set (itp, 0);
+ // ipsec_tun_protect_feature_set (itp, 0);
hash_free (idi->id_hash);
idi->id_hash = NULL;
}
{
itp->itp_crypto.src = sa->tunnel_dst_addr;
itp->itp_crypto.dst = sa->tunnel_src_addr;
- ipsec_sa_set_IS_PROTECT (sa);
- itp->itp_flags |= IPSEC_PROTECT_ENCAPED;
+ if (!(itp->itp_flags & IPSEC_PROTECT_ITF))
+ {
+ ipsec_sa_set_IS_PROTECT (sa);
+ itp->itp_flags |= IPSEC_PROTECT_ENCAPED;
+ }
}
else
{
pool_get_zero (ipsec_tun_protect_pool, itp);
itp->itp_sw_if_index = sw_if_index;
+ itp->itp_ai = ADJ_INDEX_INVALID;
itp->itp_n_sa_in = vec_len (sas_in);
for (ii = 0; ii < itp->itp_n_sa_in; ii++)
if (rv)
goto out;
- if (ip46_address_is_zero (&itp->itp_tun.dst))
+ if (ip46_address_is_zero (&itp->itp_tun.src))
+ {
+ /* must be one of thos pesky ipsec interfaces that has no encap.
+ * the encap then MUST comefrom the tunnel mode SA.
+ */
+ ipsec_sa_t *sa;
+
+ sa = ipsec_sa_get (itp->itp_out_sa);
+
+ if (!ipsec_sa_is_set_IS_TUNNEL (sa))
+ {
+ rv = VNET_API_ERROR_INVALID_DST_ADDRESS;
+ goto out;
+ }
+
+ itp->itp_flags |= IPSEC_PROTECT_ITF;
+ }
+ else if (ip46_address_is_zero (&itp->itp_tun.dst))
{
/* tunnel has no destination address, presumably because it's p2mp
in which case we use the nh that this is protection for */
/*
* add to the tunnel DB for ingress
- * - if the SA is in trasnport mode, then the packates will arrivw
+ * - if the SA is in trasnport mode, then the packates will arrive
* with the IP src,dst of the protected tunnel, in which case we can
* simply strip the IP header and hand the payload to the protocol
* appropriate input handler
itp = ipsec_tun_protect_get (itpi);
ipsec_tun_protect_unconfig (im, itp);
+ if (ADJ_INDEX_INVALID != itp->itp_ai)
+ adj_unlock (itp->itp_ai);
+
clib_mem_free (itp->itp_key);
pool_put (ipsec_tun_protect_pool, itp);
ipsec_tun_protect_adj_delegate_adj_deleted (adj_delegate_t * ad)
{
/* remove our delegate */
+ ipsec_tun_protect_add_adj (ad->ad_adj_index, NULL);
adj_delegate_remove (ad->ad_adj_index, ipsec_tun_adj_delegate_type);
- ipsec_tun_protect_add_adj (ad->ad_adj_index, INDEX_INVALID);
+}
+
+static void
+ipsec_tun_protect_adj_delegate_adj_modified (adj_delegate_t * ad)
+{
+ ipsec_tun_protect_add_adj (ad->ad_adj_index,
+ ipsec_tun_protect_get (ad->ad_index));
}
static void
ip_adjacency_t *adj;
index_t itpi;
- adj = adj_get (ai);
-
- if (adj->lookup_next_index != IP_LOOKUP_NEXT_MIDCHAIN)
+ if (!adj_is_midchain (ai))
return;
+ adj = adj_get (ai);
+
ip_address_from_46 (&adj->sub_type.midchain.next_hop,
adj->ia_nh_proto, &ip);
itpi = ipsec_tun_protect_find (adj->rewrite_header.sw_if_index, &ip);
if (INDEX_INVALID != itpi)
- {
- const ipsec_tun_protect_t *itp;
-
- itp = ipsec_tun_protect_get (itpi);
- adj_delegate_add (adj_get (ai), ipsec_tun_adj_delegate_type, itpi);
- ipsec_tun_protect_add_adj (ai, itp->itp_out_sa);
- }
+ ipsec_tun_protect_adj_add (ai, ipsec_tun_protect_get (itpi));
}
static u8 *
const static adj_delegate_vft_t ipsec_tun_adj_delegate_vft = {
.adv_adj_deleted = ipsec_tun_protect_adj_delegate_adj_deleted,
.adv_adj_created = ipsec_tun_protect_adj_delegate_adj_created,
+ .adv_adj_modified = ipsec_tun_protect_adj_delegate_adj_modified,
.adv_format = ipsec_tun_protect_adj_delegate_format,
};
.nv_deleted = ipsec_tun_teib_entry_deleted,
};
+
clib_error_t *
ipsec_tunnel_protect_init (vlib_main_t * vm)
{
im->tun4_protect_by_key = hash_create (0, sizeof (u64));
/* set up feature nodes to drop outbound packets with no crypto alg set */
- ipsec_add_feature ("ip4-output", "esp4-no-crypto",
- &im->esp4_no_crypto_tun_feature_index);
- ipsec_add_feature ("ip6-output", "esp6-no-crypto",
- &im->esp6_no_crypto_tun_feature_index);
+ im->esp4_no_crypto_tun_node_index =
+ vlib_get_node_by_name (vm, (u8 *) "esp4-no-crypto")->index;
+ im->esp6_no_crypto_tun_node_index =
+ vlib_get_node_by_name (vm, (u8 *) "esp6-no-crypto")->index;
+ im->esp6_encrypt_l2_tun_node_index =
+ vlib_get_node_by_name (vm, (u8 *) "esp6-encrypt-tun")->index;
+ im->esp4_encrypt_l2_tun_node_index =
+ vlib_get_node_by_name (vm, (u8 *) "esp4-encrypt-tun")->index;
ipsec_tun_adj_delegate_type =
adj_delegate_register_new_type (&ipsec_tun_adj_delegate_vft);
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