X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fipsec%2Fipsec_if.c;h=bfdc2bb6814f6ced2d20c5a12380551d339cb757;hb=e524d45ef;hp=ca6b0092f675a21e6a27d6a71eaf16e3519770a4;hpb=d04b60bfa940e21ab4676a1cb3c15989748be40a;p=vpp.git diff --git a/src/vnet/ipsec/ipsec_if.c b/src/vnet/ipsec/ipsec_if.c index ca6b0092f67..bfdc2bb6814 100644 --- a/src/vnet/ipsec/ipsec_if.c +++ b/src/vnet/ipsec/ipsec_if.c @@ -18,6 +18,9 @@ #include #include #include +#include +#include +#include #include #include @@ -28,15 +31,81 @@ static u8 * format_ipsec_name (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); - return format (s, "ipsec%d", dev_instance); + ipsec_main_t *im = &ipsec_main; + ipsec_tunnel_if_t *t = im->tunnel_interfaces + dev_instance; + + return format (s, "ipsec%d", t->show_instance); +} + +/* Statistics (not really errors) */ +#define foreach_ipsec_if_tx_error \ +_(TX, "good packets transmitted") + +static void +ipsec_if_tunnel_stack (adj_index_t ai) +{ + ipsec_main_t *ipm = &ipsec_main; + ipsec_tunnel_if_t *it; + ip_adjacency_t *adj; + u32 sw_if_index; + + adj = adj_get (ai); + sw_if_index = adj->rewrite_header.sw_if_index; + + if ((vec_len (ipm->ipsec_if_by_sw_if_index) <= sw_if_index) || + (~0 == ipm->ipsec_if_by_sw_if_index[sw_if_index])) + return; + + it = pool_elt_at_index (ipm->tunnel_interfaces, + ipm->ipsec_if_by_sw_if_index[sw_if_index]); + + if (!vnet_hw_interface_is_link_up (vnet_get_main (), it->hw_if_index)) + { + adj_midchain_delegate_unstack (ai); + } + else + { + ipsec_sa_t *sa; + + sa = ipsec_sa_get (it->output_sa_index); + + /* *INDENT-OFF* */ + fib_prefix_t pfx = { + .fp_addr = sa->tunnel_dst_addr, + .fp_len = (ipsec_sa_is_set_IS_TUNNEL_V6(sa) ? 128 : 32), + .fp_proto = (ipsec_sa_is_set_IS_TUNNEL_V6(sa) ? + FIB_PROTOCOL_IP6 : + FIB_PROTOCOL_IP4), + }; + /* *INDENT-ON* */ + + adj_midchain_delegate_stack (ai, sa->tx_fib_index, &pfx); + } +} + +/** + * @brief Call back when restacking all adjacencies on a GRE interface + */ +static adj_walk_rc_t +ipsec_if_adj_walk_cb (adj_index_t ai, void *ctx) +{ + ipsec_if_tunnel_stack (ai); + + return (ADJ_WALK_RC_CONTINUE); } -static uword -dummy_interface_tx (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) +static void +ipsec_if_tunnel_restack (ipsec_tunnel_if_t * it) { - clib_warning ("you shouldn't be here, leaking buffers..."); - return frame->n_vectors; + fib_protocol_t proto; + + /* + * walk all the adjacencies on th GRE interface and restack them + */ + FOR_EACH_FIB_IP_PROTOCOL (proto) + { + adj_nbr_walk (it->sw_if_index, proto, ipsec_if_adj_walk_cb, NULL); + } } static clib_error_t * @@ -49,36 +118,75 @@ ipsec_admin_up_down_function (vnet_main_t * vnm, u32 hw_if_index, u32 flags) ipsec_sa_t *sa; hi = vnet_get_hw_interface (vnm, hw_if_index); + t = pool_elt_at_index (im->tunnel_interfaces, hi->hw_instance); + t->flags = flags; + if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) { - t = pool_elt_at_index (im->tunnel_interfaces, hi->hw_instance); - ASSERT (im->cb.check_support_cb); sa = pool_elt_at_index (im->sad, t->input_sa_index); - err = im->cb.check_support_cb (sa); + + err = ipsec_check_support_cb (im, sa); + if (err) + return err; + + err = ipsec_add_del_sa_sess_cb (im, t->input_sa_index, 1); if (err) return err; sa = pool_elt_at_index (im->sad, t->output_sa_index); - err = im->cb.check_support_cb (sa); + + err = ipsec_check_support_cb (im, sa); + if (err) + return err; + + err = ipsec_add_del_sa_sess_cb (im, t->output_sa_index, 1); if (err) return err; - vnet_sw_interface_set_flags (vnm, hi->sw_if_index, + vnet_hw_interface_set_flags (vnm, hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP); } else - vnet_sw_interface_set_flags (vnm, hi->sw_if_index, 0 /* down */ ); + { + vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */ ); + sa = pool_elt_at_index (im->sad, t->input_sa_index); + err = ipsec_add_del_sa_sess_cb (im, t->input_sa_index, 0); + if (err) + return err; + sa = pool_elt_at_index (im->sad, t->output_sa_index); + err = ipsec_add_del_sa_sess_cb (im, t->output_sa_index, 0); + if (err) + return err; + } - return /* no error */ 0; + ipsec_if_tunnel_restack (t); + + return (NULL); +} + +static u8 * +ipsec_if_build_rewrite (vnet_main_t * vnm, + u32 sw_if_index, + vnet_link_t link_type, const void *dst_address) +{ + return (NULL); +} + +static void +ipsec_if_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai) +{ + adj_nbr_midchain_update_rewrite + (ai, NULL, NULL, ADJ_FLAG_MIDCHAIN_IP_STACK, + ipsec_if_build_rewrite (vnm, sw_if_index, adj_get_link_type (ai), NULL)); + + ipsec_if_tunnel_stack (ai); } /* *INDENT-OFF* */ -VNET_DEVICE_CLASS (ipsec_device_class, static) = +VNET_DEVICE_CLASS (ipsec_device_class) = { .name = "IPSec", .format_device_name = format_ipsec_name, - .format_tx_trace = format_ipsec_if_output_trace, - .tx_function = dummy_interface_tx, .admin_up_down_function = ipsec_admin_up_down_function, }; /* *INDENT-ON* */ @@ -88,20 +196,18 @@ VNET_HW_INTERFACE_CLASS (ipsec_hw_class) = { .name = "IPSec", .build_rewrite = default_build_rewrite, + .update_adjacency = ipsec_if_update_adj, + .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P, }; /* *INDENT-ON* */ -static int -ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm, - ipsec_add_del_tunnel_args_t * args); - static int ipsec_add_del_tunnel_if_rpc_callback (ipsec_add_del_tunnel_args_t * a) { vnet_main_t *vnm = vnet_get_main (); - ASSERT (os_get_cpu_number () == 0); + ASSERT (vlib_get_thread_index () == 0); - return ipsec_add_del_tunnel_if_internal (vnm, a); + return ipsec_add_del_tunnel_if_internal (vnm, a, NULL); } int @@ -112,19 +218,48 @@ ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args) return 0; } +static u32 +ipsec_tun_mk_input_sa_id (u32 ti) +{ + return (0x80000000 | ti); +} + +static u32 +ipsec_tun_mk_output_sa_id (u32 ti) +{ + return (0xc0000000 | ti); +} + int ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm, - ipsec_add_del_tunnel_args_t * args) + ipsec_add_del_tunnel_args_t * args, + u32 * sw_if_index) { ipsec_tunnel_if_t *t; ipsec_main_t *im = &ipsec_main; - vnet_hw_interface_t *hi; + vnet_hw_interface_t *hi = NULL; u32 hw_if_index = ~0; uword *p; - ipsec_sa_t *sa; - - u64 key = (u64) args->remote_ip.as_u32 << 32 | (u64) args->remote_spi; - p = hash_get (im->ipsec_if_pool_index_by_key, key); + u32 dev_instance; + ipsec_key_t crypto_key, integ_key; + ipsec_sa_flags_t flags; + int rv; + int is_ip6 = args->is_ip6; + ipsec4_tunnel_key_t key4; + ipsec6_tunnel_key_t key6; + + if (!is_ip6) + { + key4.remote_ip = args->remote_ip.ip4.as_u32; + key4.spi = clib_host_to_net_u32 (args->remote_spi); + p = hash_get (im->ipsec4_if_pool_index_by_key, key4.as_u64); + } + else + { + key6.remote_ip = args->remote_ip.ip6; + key6.spi = clib_host_to_net_u32 (args->remote_spi); + p = hash_get_mem (im->ipsec6_if_pool_index_by_key, &key6); + } if (args->is_add) { @@ -132,158 +267,205 @@ ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm, if (p) return VNET_API_ERROR_INVALID_VALUE; - pool_get_aligned (im->tunnel_interfaces, t, CLIB_CACHE_LINE_BYTES); - memset (t, 0, sizeof (*t)); - - pool_get (im->sad, sa); - memset (sa, 0, sizeof (*sa)); - t->input_sa_index = sa - im->sad; - sa->spi = args->remote_spi; - sa->tunnel_src_addr.ip4.as_u32 = args->remote_ip.as_u32; - sa->tunnel_dst_addr.ip4.as_u32 = args->local_ip.as_u32; - sa->is_tunnel = 1; - sa->use_esn = args->esn; - sa->use_anti_replay = args->anti_replay; - sa->integ_alg = args->integ_alg; - if (args->remote_integ_key_len <= sizeof (args->remote_integ_key)) - { - sa->integ_key_len = args->remote_integ_key_len; - clib_memcpy (sa->integ_key, args->remote_integ_key, - args->remote_integ_key_len); - } - sa->crypto_alg = args->crypto_alg; - if (args->remote_crypto_key_len <= sizeof (args->remote_crypto_key)) - { - sa->crypto_key_len = args->remote_crypto_key_len; - clib_memcpy (sa->crypto_key, args->remote_crypto_key, - args->remote_crypto_key_len); - } + pool_get_aligned_zero (im->tunnel_interfaces, t, CLIB_CACHE_LINE_BYTES); - if (im->cb.add_del_sa_sess_cb && - im->cb.add_del_sa_sess_cb (t->input_sa_index, args->is_add) < 0) - return VNET_API_ERROR_SYSCALL_ERROR_1; - - pool_get (im->sad, sa); - memset (sa, 0, sizeof (*sa)); - t->output_sa_index = sa - im->sad; - sa->spi = args->local_spi; - sa->tunnel_src_addr.ip4.as_u32 = args->local_ip.as_u32; - sa->tunnel_dst_addr.ip4.as_u32 = args->remote_ip.as_u32; - sa->is_tunnel = 1; - sa->seq = 1; - sa->use_esn = args->esn; - sa->use_anti_replay = args->anti_replay; - sa->integ_alg = args->integ_alg; - if (args->local_integ_key_len <= sizeof (args->local_integ_key)) - { - sa->integ_key_len = args->local_integ_key_len; - clib_memcpy (sa->integ_key, args->local_integ_key, - args->local_integ_key_len); - } - sa->crypto_alg = args->crypto_alg; - if (args->local_crypto_key_len <= sizeof (args->local_crypto_key)) + dev_instance = t - im->tunnel_interfaces; + if (args->renumber) + t->show_instance = args->show_instance; + else + t->show_instance = dev_instance; + + if (hash_get (im->ipsec_if_real_dev_by_show_dev, t->show_instance)) { - sa->crypto_key_len = args->local_crypto_key_len; - clib_memcpy (sa->crypto_key, args->local_crypto_key, - args->local_crypto_key_len); + pool_put (im->tunnel_interfaces, t); + return VNET_API_ERROR_INSTANCE_IN_USE; } - if (im->cb.add_del_sa_sess_cb && - im->cb.add_del_sa_sess_cb (t->output_sa_index, args->is_add) < 0) - return VNET_API_ERROR_SYSCALL_ERROR_1; + hash_set (im->ipsec_if_real_dev_by_show_dev, t->show_instance, + dev_instance); + + flags = IPSEC_SA_FLAG_IS_TUNNEL; + if (args->is_ip6) + flags |= IPSEC_SA_FLAG_IS_TUNNEL_V6; + if (args->udp_encap) + flags |= IPSEC_SA_FLAG_UDP_ENCAP; + if (args->esn) + flags |= IPSEC_SA_FLAG_USE_ESN; + if (args->anti_replay) + flags |= IPSEC_SA_FLAG_USE_ANTI_REPLAY; + + ipsec_mk_key (&crypto_key, + args->remote_crypto_key, args->remote_crypto_key_len); + ipsec_mk_key (&integ_key, + args->remote_integ_key, args->remote_integ_key_len); + + rv = ipsec_sa_add (ipsec_tun_mk_input_sa_id (dev_instance), + args->remote_spi, + IPSEC_PROTOCOL_ESP, + args->crypto_alg, + &crypto_key, + args->integ_alg, + &integ_key, + flags, + args->tx_table_id, + &args->remote_ip, + &args->local_ip, &t->input_sa_index); + + if (rv) + return VNET_API_ERROR_INVALID_SRC_ADDRESS; + + ipsec_mk_key (&crypto_key, + args->local_crypto_key, args->local_crypto_key_len); + ipsec_mk_key (&integ_key, + args->local_integ_key, args->local_integ_key_len); + + rv = ipsec_sa_add (ipsec_tun_mk_output_sa_id (dev_instance), + args->local_spi, + IPSEC_PROTOCOL_ESP, + args->crypto_alg, + &crypto_key, + args->integ_alg, + &integ_key, + flags, + args->tx_table_id, + &args->local_ip, + &args->remote_ip, &t->output_sa_index); + + if (rv) + return VNET_API_ERROR_INVALID_DST_ADDRESS; + + /* copy the key */ + if (is_ip6) + hash_set_mem_alloc (&im->ipsec6_if_pool_index_by_key, &key6, + t - im->tunnel_interfaces); + else + hash_set (im->ipsec4_if_pool_index_by_key, key4.as_u64, + t - im->tunnel_interfaces); - hash_set (im->ipsec_if_pool_index_by_key, key, - t - im->tunnel_interfaces); + hw_if_index = vnet_register_interface (vnm, ipsec_device_class.index, + t - im->tunnel_interfaces, + ipsec_hw_class.index, + t - im->tunnel_interfaces); + + hi = vnet_get_hw_interface (vnm, hw_if_index); - if (vec_len (im->free_tunnel_if_indices) > 0) - { - hw_if_index = - im->free_tunnel_if_indices[vec_len (im->free_tunnel_if_indices) - - 1]; - _vec_len (im->free_tunnel_if_indices) -= 1; - } - else - { - hw_if_index = - vnet_register_interface (vnm, ipsec_device_class.index, - t - im->tunnel_interfaces, - ipsec_hw_class.index, - t - im->tunnel_interfaces); - - hi = vnet_get_hw_interface (vnm, hw_if_index); - hi->output_node_index = ipsec_if_output_node.index; - } t->hw_if_index = hw_if_index; + t->sw_if_index = hi->sw_if_index; + + /* Standard default jumbo MTU. */ + vnet_sw_interface_set_mtu (vnm, t->sw_if_index, 9000); + + /* Add the new tunnel to the DB of tunnels per sw_if_index ... */ + vec_validate_init_empty (im->ipsec_if_by_sw_if_index, t->sw_if_index, + ~0); + im->ipsec_if_by_sw_if_index[t->sw_if_index] = dev_instance; + + vnet_feature_enable_disable ("ip4-output", + "esp4-encrypt-tun", + t->sw_if_index, 1, + &t->output_sa_index, + sizeof (t->output_sa_index)); + vnet_feature_enable_disable ("ip6-output", + "esp6-encrypt-tun", + t->sw_if_index, 1, + &t->output_sa_index, + sizeof (t->output_sa_index)); /*1st interface, register protocol */ if (pool_elts (im->tunnel_interfaces) == 1) - ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP, - ipsec_if_input_node.index); + { + ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP, + ipsec4_if_input_node.index); + ip6_register_protocol (IP_PROTOCOL_IPSEC_ESP, + ipsec6_if_input_node.index); + } - return hw_if_index; } else { + u32 ti; + /* check if exists */ if (!p) return VNET_API_ERROR_INVALID_VALUE; - t = pool_elt_at_index (im->tunnel_interfaces, p[0]); + ti = p[0]; + t = pool_elt_at_index (im->tunnel_interfaces, ti); hi = vnet_get_hw_interface (vnm, t->hw_if_index); vnet_sw_interface_set_flags (vnm, hi->sw_if_index, 0); /* admin down */ - vec_add1 (im->free_tunnel_if_indices, t->hw_if_index); - /* delete input and output SA */ - sa = pool_elt_at_index (im->sad, t->input_sa_index); - - if (im->cb.add_del_sa_sess_cb && - im->cb.add_del_sa_sess_cb (t->input_sa_index, args->is_add) < 0) - return VNET_API_ERROR_SYSCALL_ERROR_1; + vnet_feature_enable_disable ("ip4-output", + "esp4-encrypt-tun", + hi->sw_if_index, 0, + &t->output_sa_index, + sizeof (t->output_sa_index)); + vnet_feature_enable_disable ("ip6-output", + "esp6-encrypt-tun", + hi->sw_if_index, 0, + &t->output_sa_index, + sizeof (t->output_sa_index)); + vnet_delete_hw_interface (vnm, t->hw_if_index); + + if (is_ip6) + hash_unset_mem_free (&im->ipsec6_if_pool_index_by_key, &key6); + else + hash_unset (im->ipsec4_if_pool_index_by_key, key4.as_u64); - pool_put (im->sad, sa); + hash_unset (im->ipsec_if_real_dev_by_show_dev, t->show_instance); + im->ipsec_if_by_sw_if_index[t->sw_if_index] = ~0; - sa = pool_elt_at_index (im->sad, t->output_sa_index); + pool_put (im->tunnel_interfaces, t); - if (im->cb.add_del_sa_sess_cb && - im->cb.add_del_sa_sess_cb (t->output_sa_index, args->is_add) < 0) - return VNET_API_ERROR_SYSCALL_ERROR_1; + /* delete input and output SA */ + ipsec_sa_del (ipsec_tun_mk_input_sa_id (ti)); + ipsec_sa_del (ipsec_tun_mk_output_sa_id (ti)); + } - pool_put (im->sad, sa); + if (sw_if_index) + *sw_if_index = hi->sw_if_index; - hash_unset (im->ipsec_if_pool_index_by_key, key); - pool_put (im->tunnel_interfaces, t); - } return 0; } int ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm, - ipsec_add_del_ipsec_gre_tunnel_args_t * args) + const ipsec_gre_tunnel_add_del_args_t * args) { ipsec_tunnel_if_t *t = 0; ipsec_main_t *im = &ipsec_main; uword *p; ipsec_sa_t *sa; - u64 key; + ipsec4_tunnel_key_t key; u32 isa, osa; p = hash_get (im->sa_index_by_sa_id, args->local_sa_id); if (!p) return VNET_API_ERROR_INVALID_VALUE; - isa = p[0]; + osa = p[0]; + sa = pool_elt_at_index (im->sad, p[0]); + ipsec_sa_set_IS_GRE (sa); p = hash_get (im->sa_index_by_sa_id, args->remote_sa_id); if (!p) return VNET_API_ERROR_INVALID_VALUE; - osa = p[0]; + isa = p[0]; sa = pool_elt_at_index (im->sad, p[0]); + ipsec_sa_set_IS_GRE (sa); - if (sa->is_tunnel) - key = (u64) sa->tunnel_dst_addr.ip4.as_u32 << 32 | (u64) sa->spi; + /* we form the key from the input/remote SA whose tunnel is srouce + * at the remote end */ + if (ipsec_sa_is_set_IS_TUNNEL (sa)) + { + key.remote_ip = sa->tunnel_src_addr.ip4.as_u32; + key.spi = clib_host_to_net_u32 (sa->spi); + } else - key = (u64) args->remote_ip.as_u32 << 32 | (u64) sa->spi; + { + key.remote_ip = args->src.as_u32; + key.spi = clib_host_to_net_u32 (sa->spi); + } - p = hash_get (im->ipsec_if_pool_index_by_key, key); + p = hash_get (im->ipsec4_if_pool_index_by_key, key.as_u64); if (args->is_add) { @@ -292,18 +474,25 @@ ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm, return VNET_API_ERROR_INVALID_VALUE; pool_get_aligned (im->tunnel_interfaces, t, CLIB_CACHE_LINE_BYTES); - memset (t, 0, sizeof (*t)); + clib_memset (t, 0, sizeof (*t)); t->input_sa_index = isa; t->output_sa_index = osa; t->hw_if_index = ~0; - hash_set (im->ipsec_if_pool_index_by_key, key, + hash_set (im->ipsec4_if_pool_index_by_key, key.as_u64, t - im->tunnel_interfaces); /*1st interface, register protocol */ if (pool_elts (im->tunnel_interfaces) == 1) - ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP, - ipsec_if_input_node.index); + { + ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP, + ipsec4_if_input_node.index); + /* TBD, GRE IPSec6 + * + ip6_register_protocol (IP_PROTOCOL_IPSEC_ESP, + ipsec6_if_input_node.index); + */ + } } else { @@ -312,7 +501,7 @@ ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm, return VNET_API_ERROR_INVALID_VALUE; t = pool_elt_at_index (im->tunnel_interfaces, p[0]); - hash_unset (im->ipsec_if_pool_index_by_key, key); + hash_unset (im->ipsec4_if_pool_index_by_key, key.as_u64); pool_put (im->tunnel_interfaces, t); } return 0; @@ -330,49 +519,32 @@ ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index, hi = vnet_get_hw_interface (vnm, hw_if_index); t = pool_elt_at_index (im->tunnel_interfaces, hi->dev_instance); + if (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) + return VNET_API_ERROR_SYSCALL_ERROR_1; + if (type == IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO) { sa = pool_elt_at_index (im->sad, t->output_sa_index); - sa->crypto_alg = alg; - sa->crypto_key_len = vec_len (key); - clib_memcpy (sa->crypto_key, key, vec_len (key)); - - if (im->cb.add_del_sa_sess_cb && - im->cb.add_del_sa_sess_cb (t->output_sa_index, 0) < 0) - return VNET_API_ERROR_SYSCALL_ERROR_1; + ipsec_sa_set_crypto_alg (sa, alg); + ipsec_mk_key (&sa->crypto_key, key, vec_len (key)); } else if (type == IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG) { sa = pool_elt_at_index (im->sad, t->output_sa_index); - sa->integ_alg = alg; - sa->integ_key_len = vec_len (key); - clib_memcpy (sa->integ_key, key, vec_len (key)); - - if (im->cb.add_del_sa_sess_cb && - im->cb.add_del_sa_sess_cb (t->output_sa_index, 0) < 0) - return VNET_API_ERROR_SYSCALL_ERROR_1; + ipsec_sa_set_integ_alg (sa, alg); + ipsec_mk_key (&sa->integ_key, key, vec_len (key)); } else if (type == IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO) { sa = pool_elt_at_index (im->sad, t->input_sa_index); - sa->crypto_alg = alg; - sa->crypto_key_len = vec_len (key); - clib_memcpy (sa->crypto_key, key, vec_len (key)); - - if (im->cb.add_del_sa_sess_cb && - im->cb.add_del_sa_sess_cb (t->input_sa_index, 0) < 0) - return VNET_API_ERROR_SYSCALL_ERROR_1; + ipsec_sa_set_crypto_alg (sa, alg); + ipsec_mk_key (&sa->crypto_key, key, vec_len (key)); } else if (type == IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG) { sa = pool_elt_at_index (im->sad, t->input_sa_index); - sa->integ_alg = alg; - sa->integ_key_len = vec_len (key); - clib_memcpy (sa->integ_key, key, vec_len (key)); - - if (im->cb.add_del_sa_sess_cb && - im->cb.add_del_sa_sess_cb (t->input_sa_index, 0) < 0) - return VNET_API_ERROR_SYSCALL_ERROR_1; + ipsec_sa_set_integ_alg (sa, alg); + ipsec_mk_key (&sa->integ_key, key, vec_len (key)); } else return VNET_API_ERROR_INVALID_VALUE; @@ -381,13 +553,135 @@ ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index, } +int +ipsec_set_interface_sa (vnet_main_t * vnm, u32 hw_if_index, u32 sa_id, + u8 is_outbound) +{ + ipsec_main_t *im = &ipsec_main; + vnet_hw_interface_t *hi; + ipsec_tunnel_if_t *t; + ipsec_sa_t *sa, *old_sa; + u32 sa_index, old_sa_index; + uword *p; + + hi = vnet_get_hw_interface (vnm, hw_if_index); + t = pool_elt_at_index (im->tunnel_interfaces, hi->dev_instance); + + sa_index = ipsec_get_sa_index_by_sa_id (sa_id); + if (sa_index == ~0) + { + clib_warning ("SA with ID %u not found", sa_id); + return VNET_API_ERROR_INVALID_VALUE; + } + + if (ipsec_is_sa_used (sa_index)) + { + clib_warning ("SA with ID %u is already in use", sa_id); + return VNET_API_ERROR_INVALID_VALUE; + } + + sa = pool_elt_at_index (im->sad, sa_index); + + if (!is_outbound) + { + old_sa_index = t->input_sa_index; + old_sa = pool_elt_at_index (im->sad, old_sa_index); + + if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ^ + ipsec_sa_is_set_IS_TUNNEL_V6 (old_sa)) + { + clib_warning ("IPsec interface SA endpoints type can't be changed"); + return VNET_API_ERROR_INVALID_VALUE; + } + + if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa)) + { + ipsec6_tunnel_key_t key; + + /* unset old inbound hash entry. packets should stop arriving */ + key.remote_ip = old_sa->tunnel_src_addr.ip6; + key.spi = clib_host_to_net_u32 (old_sa->spi); + + p = hash_get_mem (im->ipsec6_if_pool_index_by_key, &key); + if (p) + hash_unset_mem_free (&im->ipsec6_if_pool_index_by_key, &key); + + /* set new inbound SA, then set new hash entry */ + t->input_sa_index = sa_index; + key.remote_ip = sa->tunnel_src_addr.ip6; + key.spi = clib_host_to_net_u32 (sa->spi); + + hash_set_mem_alloc (&im->ipsec6_if_pool_index_by_key, &key, + hi->dev_instance); + } + else + { + ipsec4_tunnel_key_t key; + + /* unset old inbound hash entry. packets should stop arriving */ + key.remote_ip = old_sa->tunnel_src_addr.ip4.as_u32; + key.spi = clib_host_to_net_u32 (old_sa->spi); + + p = hash_get (im->ipsec4_if_pool_index_by_key, key.as_u64); + if (p) + hash_unset (im->ipsec4_if_pool_index_by_key, key.as_u64); + + /* set new inbound SA, then set new hash entry */ + t->input_sa_index = sa_index; + key.remote_ip = sa->tunnel_src_addr.ip4.as_u32; + key.spi = clib_host_to_net_u32 (sa->spi); + + hash_set (im->ipsec4_if_pool_index_by_key, key.as_u64, + hi->dev_instance); + } + } + else + { + old_sa_index = t->output_sa_index; + old_sa = pool_elt_at_index (im->sad, old_sa_index); + + if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ^ + ipsec_sa_is_set_IS_TUNNEL_V6 (old_sa)) + { + clib_warning ("IPsec interface SA endpoints type can't be changed"); + return VNET_API_ERROR_INVALID_VALUE; + } + + t->output_sa_index = sa_index; + } + + /* remove sa_id to sa_index mapping on old SA */ + if (ipsec_get_sa_index_by_sa_id (old_sa->id) == old_sa_index) + hash_unset (im->sa_index_by_sa_id, old_sa->id); + + if (ipsec_add_del_sa_sess_cb (im, old_sa_index, 0)) + { + clib_warning ("IPsec backend add/del callback returned error"); + return VNET_API_ERROR_SYSCALL_ERROR_1; + } + pool_put (im->sad, old_sa); + + return 0; +} + + clib_error_t * ipsec_tunnel_if_init (vlib_main_t * vm) { ipsec_main_t *im = &ipsec_main; - im->ipsec_if_pool_index_by_key = hash_create (0, sizeof (uword)); - + /* initialize the ipsec-if ip4 hash */ + im->ipsec4_if_pool_index_by_key = + hash_create (0, sizeof (ipsec4_tunnel_key_t)); + /* initialize the ipsec-if ip6 hash */ + im->ipsec6_if_pool_index_by_key = hash_create_mem (0, + sizeof + (ipsec6_tunnel_key_t), + sizeof (uword)); + im->ipsec_if_real_dev_by_show_dev = hash_create (0, sizeof (uword)); + + udp_register_dst_port (vm, UDP_DST_PORT_ipsec, ipsec4_if_input_node.index, + 1); return 0; }