*/
#include <vnet/ipsec/ipsec_tun.h>
+#include <vnet/ipsec/ipsec_itf.h>
#include <vnet/ipsec/esp.h>
-#include <vnet/udp/udp.h>
+#include <vnet/udp/udp_local.h>
+#include <vnet/adj/adj_delegate.h>
+#include <vnet/adj/adj_midchain.h>
+#include <vnet/teib/teib.h>
+
+/* instantiate the bihash functions */
+#include <vppinfra/bihash_8_16.h>
+#include <vppinfra/bihash_template.c>
+#include <vppinfra/bihash_24_16.h>
+#include <vppinfra/bihash_template.c>
+
+#define IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
+#define IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE 512 << 20
+
+/**
+ * The logger
+ */
+vlib_log_class_t ipsec_tun_protect_logger;
/**
* Pool of tunnel protection objects
*/
-ipsec_tun_protect_t *ipsec_protect_pool;
+ipsec_tun_protect_t *ipsec_tun_protect_pool;
/**
- * DB of protected tunnels
+ * Adj delegate registered type
*/
-typedef struct ipsec_protect_db_t_
+static adj_delegate_type_t ipsec_tun_adj_delegate_type;
+
+/**
+ * Adj index to TX SA mapping
+ */
+index_t *ipsec_tun_protect_sa_by_adj_index;
+
+const ip_address_t IP_ADDR_ALL_0 = IP_ADDRESS_V4_ALL_0S;
+
+/**
+ * The DB of all added per-nh tunnel protectiond
+ */
+typedef struct ipsec_tun_protect_itf_db_t_
+{
+ /** A hash table key'd on IP (4 or 6) address */
+ uword *id_hash;
+ /** If the interface is P2P then there is only one protect
+ * object associated with the auto-adj for each NH proto */
+ index_t id_itp;
+} ipsec_tun_protect_itf_db_t;
+
+typedef struct ipsec_tun_protect_db_t_
{
- u32 *tunnels;
- u32 count;
-} ipsec_protect_db_t;
+ /** Per-interface vector */
+ ipsec_tun_protect_itf_db_t *id_itf;
+} ipsec_tun_protect_db_t;
+
+static ipsec_tun_protect_db_t itp_db;
+
+const static ipsec_tun_protect_itf_db_t IPSEC_TUN_PROTECT_DEFAULT_DB_ENTRY = {
+ .id_itp = INDEX_INVALID,
+};
+
+#define ITP_DBG(_itp, _fmt, _args...) \
+{ \
+ vlib_log_debug(ipsec_tun_protect_logger, \
+ "[%U]: " _fmt, \
+ format_ipsec_tun_protect, \
+ _itp, ##_args); \
+}
-static ipsec_protect_db_t ipsec_protect_db;
+#define ITP_DBG2(_fmt, _args...) \
+{ \
+ vlib_log_debug(ipsec_tun_protect_logger, \
+ _fmt, ##_args); \
+}
-static int
-ipsec_tun_protect_feature_set (ipsec_tun_protect_t * itp, u8 enable)
+static u32 ipsec_tun_node_regs[N_AF];
+
+void
+ipsec_tun_register_nodes (ip_address_family_t af)
{
- u32 sai = itp->itp_out_sa;
- int is_ip4, is_l2, rv;
+ if (0 == ipsec_tun_node_regs[af]++)
+ {
+ if (AF_IP4 == af)
+ {
+ ipsec_register_udp_port (UDP_DST_PORT_ipsec);
+ ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP,
+ ipsec4_tun_input_node.index);
+ }
+ else
+ ip6_register_protocol (IP_PROTOCOL_IPSEC_ESP,
+ ipsec6_tun_input_node.index);
+ }
+}
+
+void
+ipsec_tun_unregister_nodes (ip_address_family_t af)
+{
+ ASSERT (0 != ipsec_tun_node_regs[af]);
+ if (0 == --ipsec_tun_node_regs[af])
+ {
+ if (AF_IP4 == af)
+ {
+ ipsec_unregister_udp_port (UDP_DST_PORT_ipsec);
+ ip4_unregister_protocol (IP_PROTOCOL_IPSEC_ESP);
+ }
+ else
+ ip6_unregister_protocol (IP_PROTOCOL_IPSEC_ESP);
+ }
+}
- is_ip4 = ip46_address_is_ip4 (&itp->itp_tun.src);
- is_l2 = itp->itp_flags & IPSEC_PROTECT_L2;
+static inline const ipsec_tun_protect_t *
+ipsec_tun_protect_from_const_base (const adj_delegate_t * ad)
+{
+ if (ad == NULL)
+ return (NULL);
+ return (pool_elt_at_index (ipsec_tun_protect_pool, ad->ad_index));
+}
- if (is_ip4)
+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;
+ u32 next;
+
+ if (!(itp->itp_flags & IPSEC_PROTECT_ITF))
{
- if (is_l2)
- rv = vnet_feature_enable_disable ("ethernet-output",
- "esp4-encrypt-tun",
- itp->itp_sw_if_index, enable,
- &sai, sizeof (sai));
+ if (ip46_address_is_ip4 (&itp->itp_tun.src))
+ linkt = VNET_LINK_IP4;
else
- rv = vnet_feature_enable_disable ("ip4-output",
- "esp4-encrypt-tun",
- itp->itp_sw_if_index, enable,
- &sai, sizeof (sai));
+ linkt = VNET_LINK_IP6;
}
+
+ sa = ipsec_sa_get (itp->itp_out_sa);
+ im = &ipsec_main;
+ next = 0;
+
+ if ((sa->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
+ sa->integ_alg == IPSEC_INTEG_ALG_NONE) &&
+ !(itp->itp_flags & IPSEC_PROTECT_ITF))
+ next = (VNET_LINK_IP4 == linkt ? im->esp4_no_crypto_tun_node_index :
+ im->esp6_no_crypto_tun_node_index);
+ else if (itp->itp_flags & IPSEC_PROTECT_L2)
+ next = (VNET_LINK_IP4 == linkt ? im->esp4_encrypt_l2_tun_node_index :
+ im->esp6_encrypt_l2_tun_node_index);
else
{
- if (is_l2)
- rv = vnet_feature_enable_disable ("ethernet-output",
- "esp6-encrypt-tun",
- itp->itp_sw_if_index, enable,
- &sai, sizeof (sai));
- else
- rv = vnet_feature_enable_disable ("ip6-output",
- "esp6-encrypt-tun",
- itp->itp_sw_if_index, enable,
- &sai, sizeof (sai));
+ switch (linkt)
+ {
+ case VNET_LINK_IP4:
+ next = im->esp4_encrypt_tun_node_index;
+ break;
+ case VNET_LINK_IP6:
+ next = im->esp6_encrypt_tun_node_index;
+ break;
+ case VNET_LINK_MPLS:
+ next = im->esp_mpls_encrypt_tun_node_index;
+ break;
+ case VNET_LINK_ARP:
+ case VNET_LINK_NSH:
+ case VNET_LINK_ETHERNET:
+ ASSERT (0);
+ break;
+ }
}
+ return (next);
+}
- ASSERT (!rv);
- return (rv);
+static void
+ipsec_tun_protect_add_adj (adj_index_t ai, const ipsec_tun_protect_t * itp)
+{
+ vec_validate_init_empty (ipsec_tun_protect_sa_by_adj_index, ai,
+ INDEX_INVALID);
+
+ if (NULL == itp)
+ {
+ ipsec_tun_protect_sa_by_adj_index[ai] = INDEX_INVALID;
+ adj_nbr_midchain_reset_next_node (ai);
+ }
+ else
+ {
+ 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));
+ }
+}
+
+static index_t
+ipsec_tun_protect_find (u32 sw_if_index, const ip_address_t * nh)
+{
+ ipsec_tun_protect_itf_db_t *idi;
+ uword *p;
+
+ if (vec_len (itp_db.id_itf) <= sw_if_index)
+ return INDEX_INVALID;
+
+ if (vnet_sw_interface_is_p2p (vnet_get_main (), sw_if_index))
+ return (itp_db.id_itf[sw_if_index].id_itp);
+
+ idi = &itp_db.id_itf[sw_if_index];
+ p = hash_get_mem (idi->id_hash, nh);
+
+ if (NULL == p)
+ {
+ return INDEX_INVALID;
+ }
+ return (p[0]);
}
static void
-ipsec_tun_protect_db_add (ipsec_main_t * im, const ipsec_tun_protect_t * itp)
+ipsec_tun_protect_rx_db_add (ipsec_main_t * im,
+ const ipsec_tun_protect_t * itp)
{
const ipsec_sa_t *sa;
u32 sai;
+ if (ip46_address_is_zero (&itp->itp_crypto.dst))
+ return;
+
/* *INDENT-OFF* */
FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
({
sa = ipsec_sa_get (sai);
ipsec_tun_lkup_result_t res = {
- .tun_index = itp - ipsec_protect_pool,
+ .tun_index = itp - ipsec_tun_protect_pool,
.sa_index = sai,
+ .flags = itp->itp_flags,
+ .sw_if_index = itp->itp_sw_if_index,
};
/*
*/
if (ip46_address_is_ip4 (&itp->itp_crypto.dst))
{
- ipsec4_tunnel_key_t key = {
- .remote_ip = itp->itp_crypto.dst.ip4.as_u32,
- .spi = clib_host_to_net_u32 (sa->spi),
+ ipsec4_tunnel_kv_t key = {
+ .value = res,
};
- hash_set (im->tun4_protect_by_key, key.as_u64, res.as_u64);
+ clib_bihash_kv_8_16_t *bkey = (clib_bihash_kv_8_16_t*)&key;
+
+ ipsec4_tunnel_mk_key(&key, &itp->itp_crypto.dst.ip4,
+ clib_host_to_net_u32 (sa->spi));
+
+ if (!im->tun4_protect_by_key.nbuckets)
+ clib_bihash_init_8_16 (&im->tun4_protect_by_key,
+ "IPSec IPv4 tunnels",
+ IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
+ IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
+
+ clib_bihash_add_del_8_16 (&im->tun4_protect_by_key, bkey, 1);
+ ipsec_tun_register_nodes(AF_IP4);
}
else
{
- ipsec6_tunnel_key_t key = {
- .remote_ip = itp->itp_crypto.dst.ip6,
- .spi = clib_host_to_net_u32 (sa->spi),
+ ipsec6_tunnel_kv_t key = {
+ .key = {
+ .remote_ip = itp->itp_crypto.dst.ip6,
+ .spi = clib_host_to_net_u32 (sa->spi),
+ },
+ .value = res,
};
- hash_set_mem_alloc (&im->tun6_protect_by_key, &key, res.as_u64);
+ clib_bihash_kv_24_16_t *bkey = (clib_bihash_kv_24_16_t*)&key;
+
+ if (!im->tun4_protect_by_key.nbuckets)
+ clib_bihash_init_24_16 (&im->tun6_protect_by_key,
+ "IPSec IPv6 tunnels",
+ IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
+ IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
+ clib_bihash_add_del_24_16 (&im->tun6_protect_by_key, bkey, 1);
+ ipsec_tun_register_nodes(AF_IP6);
}
}))
/* *INDENT-ON* */
}
+static adj_walk_rc_t
+ipsec_tun_protect_adj_add (adj_index_t ai, void *arg)
+{
+ 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);
+
+ if (itp->itp_flags & IPSEC_PROTECT_ITF)
+ ipsec_itf_adj_stack (ai, itp->itp_out_sa);
+
+ return (ADJ_WALK_RC_CONTINUE);
+}
+
static void
-ipsec_tun_protect_db_remove (ipsec_main_t * im,
- const ipsec_tun_protect_t * itp)
+ipsec_tun_protect_tx_db_add (ipsec_tun_protect_t * itp)
+{
+ /*
+ * add the delegate to the adj
+ */
+ ipsec_tun_protect_itf_db_t *idi;
+ fib_protocol_t nh_proto;
+ ip46_address_t nh;
+
+ vec_validate_init_empty (itp_db.id_itf,
+ itp->itp_sw_if_index,
+ IPSEC_TUN_PROTECT_DEFAULT_DB_ENTRY);
+
+ idi = &itp_db.id_itf[itp->itp_sw_if_index];
+
+ if (vnet_sw_interface_is_p2p (vnet_get_main (), itp->itp_sw_if_index))
+ {
+ if (INDEX_INVALID == idi->id_itp)
+ {
+ // ipsec_tun_protect_feature_set (itp, 1);
+ }
+ idi->id_itp = itp - ipsec_tun_protect_pool;
+
+ FOR_EACH_FIB_IP_PROTOCOL (nh_proto)
+ adj_nbr_walk (itp->itp_sw_if_index,
+ nh_proto, ipsec_tun_protect_adj_add, itp);
+ }
+ else
+ {
+ if (NULL == idi->id_hash)
+ {
+ idi->id_hash =
+ hash_create_mem (0, sizeof (ip_address_t), sizeof (uword));
+ /*
+ * enable the encrypt feature for egress if this is the first addition
+ * on this interface
+ */
+ // ipsec_tun_protect_feature_set (itp, 1);
+ }
+
+ hash_set_mem (idi->id_hash, itp->itp_key, itp - ipsec_tun_protect_pool);
+
+ /*
+ * walk all the adjs with the same nh on this interface
+ * to associate them with this protection
+ */
+ nh_proto = ip_address_to_46 (itp->itp_key, &nh);
+
+ adj_nbr_walk_nh (itp->itp_sw_if_index,
+ nh_proto, &nh, ipsec_tun_protect_adj_add, itp);
+
+ ipsec_tun_register_nodes (FIB_PROTOCOL_IP6 == nh_proto ?
+ AF_IP6 : AF_IP4);
+ }
+}
+
+static void
+ipsec_tun_protect_rx_db_remove (ipsec_main_t * im,
+ const ipsec_tun_protect_t * itp)
{
const ipsec_sa_t *sa;
/* *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.as_u32,
- .spi = clib_host_to_net_u32 (sa->spi),
- };
- hash_unset (im->tun4_protect_by_key, &key);
- }
- else
- {
- ipsec6_tunnel_key_t key = {
+ if (ip46_address_is_ip4 (&itp->itp_crypto.dst))
+ {
+ ipsec4_tunnel_kv_t key;
+ clib_bihash_kv_8_16_t res, *bkey = (clib_bihash_kv_8_16_t*)&key;
+
+ ipsec4_tunnel_mk_key(&key, &itp->itp_crypto.dst.ip4,
+ clib_host_to_net_u32 (sa->spi));
+
+ if (!clib_bihash_search_8_16 (&im->tun4_protect_by_key, bkey, &res))
+ {
+ clib_bihash_add_del_8_16 (&im->tun4_protect_by_key, bkey, 0);
+ ipsec_tun_unregister_nodes(AF_IP4);
+ }
+ }
+ else
+ {
+ ipsec6_tunnel_kv_t key = {
+ .key = {
.remote_ip = itp->itp_crypto.dst.ip6,
.spi = clib_host_to_net_u32 (sa->spi),
- };
- hash_unset_mem_free (&im->tun6_protect_by_key, &key);
- }
- }))
+ },
+ };
+ clib_bihash_kv_24_16_t res, *bkey = (clib_bihash_kv_24_16_t*)&key;
+
+ if (!clib_bihash_search_24_16 (&im->tun6_protect_by_key, bkey, &res))
+ {
+ clib_bihash_add_del_24_16 (&im->tun6_protect_by_key, bkey, 0);
+ 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, NULL);
+
+ if (itp->itp_flags & IPSEC_PROTECT_ITF)
+ ipsec_itf_adj_unstack (ai);
+
+ return (ADJ_WALK_RC_CONTINUE);
+}
+
static void
-ipsec_tun_protect_config (ipsec_main_t * im,
- ipsec_tun_protect_t * itp, u32 sa_out, u32 * sas_in)
+ipsec_tun_protect_tx_db_remove (ipsec_tun_protect_t * itp)
{
- ipsec_sa_t *sa;
- u32 ii;
+ ipsec_tun_protect_itf_db_t *idi;
+ fib_protocol_t nh_proto;
+ ip46_address_t nh;
- itp->itp_n_sa_in = vec_len (sas_in);
- for (ii = 0; ii < itp->itp_n_sa_in; ii++)
- itp->itp_in_sas[ii] = sas_in[ii];
- itp->itp_out_sa = sa_out;
+ nh_proto = ip_address_to_46 (itp->itp_key, &nh);
+ idi = &itp_db.id_itf[itp->itp_sw_if_index];
+
+ if (vnet_sw_interface_is_p2p (vnet_get_main (), itp->itp_sw_if_index))
+ {
+ // ipsec_tun_protect_feature_set (itp, 0);
+ idi->id_itp = INDEX_INVALID;
+
+ FOR_EACH_FIB_IP_PROTOCOL (nh_proto)
+ adj_nbr_walk (itp->itp_sw_if_index,
+ nh_proto, ipsec_tun_protect_adj_remove, itp);
+ }
+ else
+ {
+ adj_nbr_walk_nh (itp->itp_sw_if_index,
+ nh_proto, &nh, ipsec_tun_protect_adj_remove, itp);
+
+ hash_unset_mem (idi->id_hash, itp->itp_key);
+
+ if (0 == hash_elts (idi->id_hash))
+ {
+ // ipsec_tun_protect_feature_set (itp, 0);
+ hash_free (idi->id_hash);
+ idi->id_hash = NULL;
+ }
+ ipsec_tun_unregister_nodes (FIB_PROTOCOL_IP6 == nh_proto ?
+ AF_IP6 : AF_IP4);
+ }
+}
+
+static void
+ipsec_tun_protect_set_crypto_addr (ipsec_tun_protect_t * itp)
+{
+ ipsec_sa_t *sa;
/* *INDENT-OFF* */
FOR_EACH_IPSEC_PROTECT_INPUT_SA(itp, sa,
{
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
{
}
}));
/* *INDENT-ON* */
+}
- /*
- * add to the DB against each SA
- */
- ipsec_tun_protect_db_add (im, itp);
+static void
+ipsec_tun_protect_config (ipsec_main_t * im,
+ ipsec_tun_protect_t * itp, u32 sa_out, u32 * sas_in)
+{
+ index_t sai;
+ u32 ii;
+
+ itp->itp_n_sa_in = vec_len (sas_in);
+ for (ii = 0; ii < itp->itp_n_sa_in; ii++)
+ itp->itp_in_sas[ii] = sas_in[ii];
+ itp->itp_out_sa = sa_out;
+
+ ipsec_sa_lock (itp->itp_out_sa);
+
+ /* *INDENT-OFF* */
+ FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
+ ({
+ ipsec_sa_lock(sai);
+ }));
+ ipsec_tun_protect_set_crypto_addr(itp);
+ /* *INDENT-ON* */
/*
- * enable the encrypt feature for egress.
+ * add to the DB against each SA
*/
- ipsec_tun_protect_feature_set (itp, 1);
+ ipsec_tun_protect_rx_db_add (im, itp);
+ ipsec_tun_protect_tx_db_add (itp);
+ ITP_DBG (itp, "configured");
}
static void
ipsec_sa_t *sa;
index_t sai;
- ipsec_tun_protect_feature_set (itp, 0);
-
/* *INDENT-OFF* */
FOR_EACH_IPSEC_PROTECT_INPUT_SA(itp, sa,
({
ipsec_sa_unset_IS_PROTECT (sa);
}));
- ipsec_tun_protect_db_remove (im, itp);
+ ipsec_tun_protect_rx_db_remove (im, itp);
+ ipsec_tun_protect_tx_db_remove (itp);
ipsec_sa_unlock(itp->itp_out_sa);
ipsec_sa_unlock(sai);
}));
/* *INDENT-ON* */
+ ITP_DBG (itp, "unconfigured");
}
-index_t
-ipsec_tun_protect_find (u32 sw_if_index)
+static void
+ipsec_tun_protect_update_from_teib (ipsec_tun_protect_t * itp,
+ const teib_entry_t * ne)
{
- if (vec_len (ipsec_protect_db.tunnels) < sw_if_index)
- return (INDEX_INVALID);
+ if (NULL != ne)
+ {
+ const fib_prefix_t *pfx;
+
+ pfx = teib_entry_get_nh (ne);
- return (ipsec_protect_db.tunnels[sw_if_index]);
+ ip46_address_copy (&itp->itp_tun.dst, &pfx->fp_addr);
+ }
+ else
+ ip46_address_reset (&itp->itp_tun.dst);
}
int
-ipsec_tun_protect_update (u32 sw_if_index, u32 sa_out, u32 * sas_in)
+ipsec_tun_protect_update (u32 sw_if_index,
+ const ip_address_t * nh, u32 sa_out, u32 * sas_in)
{
- u32 itpi, ii;
ipsec_tun_protect_t *itp;
+ u32 itpi, ii, *saip;
ipsec_main_t *im;
int rv;
+ ITP_DBG2 ("update: %U/%U",
+ format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index,
+ format_ip_address, nh);
+
+ if (vec_len (sas_in) > ITP_MAX_N_SA_IN)
+ {
+ rv = VNET_API_ERROR_LIMIT_EXCEEDED;
+ goto out;
+ }
+
rv = 0;
im = &ipsec_main;
- vec_validate_init_empty (ipsec_protect_db.tunnels, sw_if_index,
- INDEX_INVALID);
- itpi = ipsec_protect_db.tunnels[sw_if_index];
+ if (NULL == nh)
+ nh = &IP_ADDR_ALL_0;
+ itpi = ipsec_tun_protect_find (sw_if_index, nh);
vec_foreach_index (ii, sas_in)
{
goto out;
}
- pool_get_zero (ipsec_protect_pool, itp);
+ pool_get_zero (ipsec_tun_protect_pool, itp);
itp->itp_sw_if_index = sw_if_index;
- ipsec_protect_db.tunnels[sw_if_index] = itp - ipsec_protect_pool;
- ipsec_protect_db.count++;
+ 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++)
itp->itp_in_sas[ii] = sas_in[ii];
itp->itp_out_sa = sa_out;
+ itp->itp_key = clib_mem_alloc (sizeof (*itp->itp_key));
+ ip_address_copy (itp->itp_key, nh);
+
rv = dev_class->ip_tun_desc (sw_if_index,
&itp->itp_tun.src,
&itp->itp_tun.dst, &is_l2);
if (rv)
goto out;
+ if (ip46_address_is_zero (&itp->itp_tun.src))
+ {
+ /*
+ * must be one of those pesky ipsec interfaces that has no encap.
+ * the encap then MUST come from 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 */
+ ipsec_tun_protect_update_from_teib
+ (itp, teib_entry_find (sw_if_index, nh));
+ }
+
if (is_l2)
itp->itp_flags |= IPSEC_PROTECT_L2;
/*
* 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
* of the tunnel we are protecting, else it's dropped.
*/
ipsec_tun_protect_config (im, itp, sa_out, sas_in);
-
- if (1 == hash_elts (im->tun4_protect_by_key))
- ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP,
- ipsec4_tun_input_node.index);
- if (1 == hash_elts (im->tun6_protect_by_key))
- ip6_register_protocol (IP_PROTOCOL_IPSEC_ESP,
- ipsec6_tun_input_node.index);
}
else
{
/* updating SAs only */
- itp = pool_elt_at_index (ipsec_protect_pool, itpi);
+ itp = pool_elt_at_index (ipsec_tun_protect_pool, itpi);
ipsec_tun_protect_unconfig (im, itp);
ipsec_tun_protect_config (im, itp, sa_out, sas_in);
}
+ ipsec_sa_unlock (sa_out);
+ vec_foreach (saip, sas_in) ipsec_sa_unlock (*saip);
vec_free (sas_in);
+
out:
return (rv);
}
int
-ipsec_tun_protect_del (u32 sw_if_index)
+ipsec_tun_protect_del (u32 sw_if_index, const ip_address_t * nh)
{
ipsec_tun_protect_t *itp;
ipsec_main_t *im;
index_t itpi;
+ ITP_DBG2 ("delete: %U/%U",
+ format_vnet_sw_if_index_name, vnet_get_main (), sw_if_index,
+ format_ip_address, nh);
+
im = &ipsec_main;
+ if (NULL == nh)
+ nh = &IP_ADDR_ALL_0;
- vec_validate_init_empty (ipsec_protect_db.tunnels, sw_if_index,
- INDEX_INVALID);
- itpi = ipsec_protect_db.tunnels[sw_if_index];
+ itpi = ipsec_tun_protect_find (sw_if_index, nh);
if (INDEX_INVALID == itpi)
return (VNET_API_ERROR_NO_SUCH_ENTRY);
itp = ipsec_tun_protect_get (itpi);
ipsec_tun_protect_unconfig (im, itp);
- ipsec_protect_db.tunnels[itp->itp_sw_if_index] = INDEX_INVALID;
+ if (ADJ_INDEX_INVALID != itp->itp_ai)
+ adj_unlock (itp->itp_ai);
- pool_put (ipsec_protect_pool, itp);
-
- /* if (0 == hash_elts (im->tun4_protect_by_key)) */
- /* ip4_unregister_protocol (IP_PROTOCOL_IPSEC_ESP); */
- /* if (0 == hash_elts (im->tun6_protect_by_key)) */
- /* ip6_unregister_protocol (IP_PROTOCOL_IPSEC_ESP); */
+ clib_mem_free (itp->itp_key);
+ pool_put (ipsec_tun_protect_pool, itp);
return (0);
}
index_t itpi;
/* *INDENT-OFF* */
- pool_foreach_index(itpi, ipsec_protect_pool,
+ pool_foreach_index (itpi, ipsec_tun_protect_pool)
+ {
+ fn (itpi, ctx);
+ }
+ /* *INDENT-ON* */
+}
+
+void
+ipsec_tun_protect_walk_itf (u32 sw_if_index,
+ ipsec_tun_protect_walk_cb_t fn, void *ctx)
+{
+ ipsec_tun_protect_itf_db_t *idi;
+ ip_address_t *key;
+ index_t itpi;
+
+ if (vec_len (itp_db.id_itf) <= sw_if_index)
+ return;
+
+ idi = &itp_db.id_itf[sw_if_index];
+
+ /* *INDENT-OFF* */
+ hash_foreach(key, itpi, idi->id_hash,
({
fn (itpi, ctx);
}));
/* *INDENT-ON* */
+ if (INDEX_INVALID != idi->id_itp)
+ fn (idi->id_itp, ctx);
}
-clib_error_t *
-ipsec_tunnel_protect_init (vlib_main_t * vm)
+static void
+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);
+}
+
+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
+ipsec_tun_protect_adj_delegate_adj_created (adj_index_t ai)
+{
+ /* add our delegate if there is protection for this neighbour */
+ ip_address_t ip = IP_ADDRESS_V4_ALL_0S;
+ ip_adjacency_t *adj;
+ index_t itpi;
+
+ 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)
+ ipsec_tun_protect_adj_add (ai, ipsec_tun_protect_get (itpi));
+}
+
+static u8 *
+ipsec_tun_protect_adj_delegate_format (const adj_delegate_t * aed, u8 * s)
+{
+ const ipsec_tun_protect_t *itp;
+
+ itp = ipsec_tun_protect_from_const_base (aed);
+ s = format (s, "ipsec-tun-protect:\n%U", format_ipsec_tun_protect, itp);
+
+ return (s);
+}
+
+static void
+ipsec_tun_teib_entry_added (const teib_entry_t * ne)
+{
+ ipsec_tun_protect_t *itp;
+ index_t itpi;
+
+ itpi = ipsec_tun_protect_find (teib_entry_get_sw_if_index (ne),
+ teib_entry_get_peer (ne));
+
+ if (INDEX_INVALID == itpi)
+ return;
+
+ itp = ipsec_tun_protect_get (itpi);
+ ipsec_tun_protect_rx_db_remove (&ipsec_main, itp);
+ ipsec_tun_protect_update_from_teib (itp, ne);
+ ipsec_tun_protect_set_crypto_addr (itp);
+ ipsec_tun_protect_rx_db_add (&ipsec_main, itp);
+
+ ITP_DBG (itp, "teib-added");
+}
+
+static void
+ipsec_tun_teib_entry_deleted (const teib_entry_t * ne)
+{
+ ipsec_tun_protect_t *itp;
+ index_t itpi;
+
+ itpi = ipsec_tun_protect_find (teib_entry_get_sw_if_index (ne),
+ teib_entry_get_peer (ne));
+
+ if (INDEX_INVALID == itpi)
+ return;
+
+ itp = ipsec_tun_protect_get (itpi);
+ ipsec_tun_protect_rx_db_remove (&ipsec_main, itp);
+ ipsec_tun_protect_update_from_teib (itp, NULL);
+ ipsec_tun_protect_set_crypto_addr (itp);
+
+ ITP_DBG (itp, "teib-removed");
+}
+
+/**
+ * VFT registered with the adjacency delegate
+ */
+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,
+};
+
+const static teib_vft_t ipsec_tun_teib_vft = {
+ .nv_added = ipsec_tun_teib_entry_added,
+ .nv_deleted = ipsec_tun_teib_entry_deleted,
+};
+
+static void
+ipsec_tun_table_init (ip_address_family_t af, uword table_size, u32 n_buckets)
+{
+ ipsec_main_t *im;
+
+ im = &ipsec_main;
+
+ if (AF_IP4 == af)
+ clib_bihash_init_8_16 (&im->tun4_protect_by_key,
+ "IPSec IPv4 tunnels", n_buckets, table_size);
+ else
+ clib_bihash_init_24_16 (&im->tun6_protect_by_key,
+ "IPSec IPv6 tunnels", n_buckets, table_size);
+}
+
+static clib_error_t *
+ipsec_tunnel_protect_init (vlib_main_t *vm)
{
ipsec_main_t *im;
im = &ipsec_main;
- im->tun6_protect_by_key = hash_create_mem (0,
- sizeof (ipsec6_tunnel_key_t),
- sizeof (u64));
- im->tun4_protect_by_key = hash_create (0, sizeof (u64));
+ clib_bihash_init_24_16 (&im->tun6_protect_by_key,
+ "IPSec IPv6 tunnels",
+ IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
+ IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
+ clib_bihash_init_8_16 (&im->tun4_protect_by_key,
+ "IPSec IPv4 tunnels",
+ IPSEC_TUN_DEFAULT_HASH_NUM_BUCKETS,
+ IPSEC_TUN_DEFAULT_HASH_MEMORY_SIZE);
+
+ /* set up feature nodes to drop outbound packets with no crypto alg set */
+ 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);
+
+ ipsec_tun_protect_logger = vlib_log_register_class ("ipsec", "tun");
+
+ teib_register (&ipsec_tun_teib_vft);
return 0;
}
VLIB_INIT_FUNCTION (ipsec_tunnel_protect_init);
+static clib_error_t *
+ipsec_config (vlib_main_t * vm, unformat_input_t * input)
+{
+ unformat_input_t sub_input;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "ip4 %U", unformat_vlib_cli_sub_input, &sub_input))
+ {
+ uword table_size = ~0;
+ u32 n_buckets = ~0;
+
+ while (unformat_check_input (&sub_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (&sub_input, "num-buckets %u", &n_buckets))
+ ;
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, &sub_input);
+ }
+
+ ipsec_tun_table_init (AF_IP4, table_size, n_buckets);
+ }
+ else if (unformat (input, "ip6 %U", unformat_vlib_cli_sub_input,
+ &sub_input))
+ {
+ uword table_size = ~0;
+ u32 n_buckets = ~0;
+
+ while (unformat_check_input (&sub_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (&sub_input, "num-buckets %u", &n_buckets))
+ ;
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, &sub_input);
+ }
+
+ ipsec_tun_table_init (AF_IP6, table_size, n_buckets);
+ }
+ else
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, input);
+ }
+
+ return 0;
+}
+
+VLIB_CONFIG_FUNCTION (ipsec_config, "ipsec");
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff