X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fipsec%2Fipsec_if.c;h=8e0fba28badb643b26297e4b4e5a6622d0ee7053;hb=f2922422d972644e67d1ca989e40cd0100ecb06d;hp=852b142717f2bb4b5402502ecfc39d4ff26b10c3;hpb=537eeeca36dcc08a3c337a7cfd1c1c426d43f563;p=vpp.git diff --git a/src/vnet/ipsec/ipsec_if.c b/src/vnet/ipsec/ipsec_if.c index 852b142717f..8e0fba28bad 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); + } } -static uword -dummy_interface_tx (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) +/** + * @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) { - clib_warning ("you shouldn't be here, leaking buffers..."); - return frame->n_vectors; + ipsec_if_tunnel_stack (ai); + + return (ADJ_WALK_RC_CONTINUE); +} + +static void +ipsec_if_tunnel_restack (ipsec_tunnel_if_t * it) +{ + 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 * @@ -50,36 +119,29 @@ ipsec_admin_up_down_function (vnet_main_t * vnm, u32 hw_if_index, u32 flags) 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) { - 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; - if (im->cb.add_del_sa_sess_cb) - { - err = im->cb.add_del_sa_sess_cb (t->input_sa_index, 1); - 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; - if (im->cb.add_del_sa_sess_cb) - { - err = im->cb.add_del_sa_sess_cb (t->output_sa_index, 1); - if (err) - return err; - } + err = ipsec_add_del_sa_sess_cb (im, t->output_sa_index, 1); + if (err) + return err; vnet_hw_interface_set_flags (vnm, hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP); @@ -87,36 +149,44 @@ ipsec_admin_up_down_function (vnet_main_t * vnm, u32 hw_if_index, u32 flags) else { 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; + } - if (im->cb.add_del_sa_sess_cb) - { - err = im->cb.add_del_sa_sess_cb (t->input_sa_index, 0); - if (err) - return err; - } + ipsec_if_tunnel_restack (t); - sa = pool_elt_at_index (im->sad, t->output_sa_index); + return (NULL); +} - if (im->cb.add_del_sa_sess_cb) - { - err = im->cb.add_del_sa_sess_cb (t->output_sa_index, 0); - if (err) - return err; - } - } +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); +} - return /* no error */ 0; +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* */ @@ -126,6 +196,7 @@ 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* */ @@ -147,6 +218,40 @@ 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); +} + +static void +ipsec_tunnel_feature_set (ipsec_main_t * im, ipsec_tunnel_if_t * t, u8 enable) +{ + u8 arc; + + arc = vnet_get_feature_arc_index ("ip4-output"); + + vnet_feature_enable_disable_with_index (arc, + im->esp4_encrypt_tun_feature_index, + t->sw_if_index, enable, + &t->output_sa_index, + sizeof (t->output_sa_index)); + + arc = vnet_get_feature_arc_index ("ip6-output"); + + vnet_feature_enable_disable_with_index (arc, + im->esp6_encrypt_tun_feature_index, + t->sw_if_index, enable, + &t->output_sa_index, + sizeof (t->output_sa_index)); +} + int ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm, ipsec_add_del_tunnel_args_t * args, @@ -157,10 +262,26 @@ ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm, 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) { @@ -168,124 +289,142 @@ 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); - 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->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)) - { - sa->crypto_key_len = args->local_crypto_key_len; - clib_memcpy (sa->crypto_key, args->local_crypto_key, - args->local_crypto_key_len); - } - - hash_set (im->ipsec_if_pool_index_by_key, key, - t - im->tunnel_interfaces); + dev_instance = t - im->tunnel_interfaces; + if (args->renumber) + t->show_instance = args->show_instance; + else + t->show_instance = dev_instance; - if (vec_len (im->free_tunnel_if_indices) > 0) + if (hash_get (im->ipsec_if_real_dev_by_show_dev, t->show_instance)) { - hw_if_index = - im->free_tunnel_if_indices[vec_len (im->free_tunnel_if_indices) - - 1]; - _vec_len (im->free_tunnel_if_indices) -= 1; + pool_put (im->tunnel_interfaces, t); + return VNET_API_ERROR_INSTANCE_IN_USE; } + + 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 | IPSEC_SA_FLAG_IS_INBOUND), + args->tx_table_id, + args->salt, + &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->salt, + &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 - { - hw_if_index = - vnet_register_interface (vnm, ipsec_device_class.index, - t - im->tunnel_interfaces, - ipsec_hw_class.index, - t - im->tunnel_interfaces); - } + hash_set (im->ipsec4_if_pool_index_by_key, key4.as_u64, + 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); - 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); - vnet_feature_enable_disable ("interface-output", "ipsec-if-output", - hi->sw_if_index, 1, 0, 0); + /* 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; + + ipsec_tunnel_feature_set (im, t, 1); /*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); + } } else { - vnet_interface_main_t *vim = &vnm->interface_main; + 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 */ - vnet_feature_enable_disable ("interface-output", "ipsec-if-output", - hi->sw_if_index, 0, 0, 0); - - vec_add1 (im->free_tunnel_if_indices, t->hw_if_index); - - vnet_interface_counter_lock (vim); - vlib_zero_combined_counter (vim->combined_sw_if_counters + - VNET_INTERFACE_COUNTER_TX, hi->sw_if_index); - vlib_zero_combined_counter (vim->combined_sw_if_counters + - VNET_INTERFACE_COUNTER_RX, hi->sw_if_index); - vnet_interface_counter_unlock (vim); - - /* delete input and output SA */ - sa = pool_elt_at_index (im->sad, t->input_sa_index); - - pool_put (im->sad, sa); + ipsec_tunnel_feature_set (im, t, 0); + vnet_delete_hw_interface (vnm, t->hw_if_index); - sa = pool_elt_at_index (im->sad, t->output_sa_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; - hash_unset (im->ipsec_if_pool_index_by_key, key); pool_put (im->tunnel_interfaces, t); + + /* 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)); } if (sw_if_index) @@ -296,32 +435,43 @@ ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm, 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) { @@ -330,18 +480,25 @@ 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 { @@ -350,62 +507,12 @@ 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; } -int -ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index, - ipsec_if_set_key_type_t type, u8 alg, u8 * key) -{ - ipsec_main_t *im = &ipsec_main; - vnet_hw_interface_t *hi; - ipsec_tunnel_if_t *t; - ipsec_sa_t *sa; - - 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)); - } - 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)); - } - 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)); - } - 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)); - } - else - return VNET_API_ERROR_INVALID_VALUE; - - return 0; -} - - int ipsec_set_interface_sa (vnet_main_t * vnm, u32 hw_if_index, u32 sa_id, u8 is_outbound) @@ -434,64 +541,112 @@ ipsec_set_interface_sa (vnet_main_t * vnm, u32 hw_if_index, u32 sa_id, } sa = pool_elt_at_index (im->sad, sa_index); - if (sa->is_tunnel_ip6) - { - clib_warning ("IPsec interface not supported with IPv6 endpoints"); - return VNET_API_ERROR_UNIMPLEMENTED; - } if (!is_outbound) { - u64 key; - old_sa_index = t->input_sa_index; old_sa = pool_elt_at_index (im->sad, old_sa_index); - /* unset old inbound hash entry. packets should stop arriving */ - key = - (u64) old_sa->tunnel_src_addr.ip4.as_u32 << 32 | (u64) old_sa->spi; - p = hash_get (im->ipsec_if_pool_index_by_key, key); - if (p) - hash_unset (im->ipsec_if_pool_index_by_key, key); + 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; + } - /* set new inbound SA, then set new hash entry */ - t->input_sa_index = sa_index; - key = (u64) sa->tunnel_src_addr.ip4.as_u32 << 32 | (u64) sa->spi; - hash_set (im->ipsec_if_pool_index_by_key, key, hi->dev_instance); + 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; + } + + /* + * re-enable the feature to get the new SA in + * the workers are stopped so no packets are sent in the clear + */ + ipsec_tunnel_feature_set (im, t, 0); t->output_sa_index = sa_index; + ipsec_tunnel_feature_set (im, t, 1); } /* 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 (im->cb.add_del_sa_sess_cb) + if (ipsec_add_del_sa_sess_cb (im, old_sa_index, 0)) { - clib_error_t *err; - - err = im->cb.add_del_sa_sess_cb (old_sa_index, 0); - if (err) - return VNET_API_ERROR_SYSCALL_ERROR_1; + clib_warning ("IPsec backend add/del callback returned error"); + return VNET_API_ERROR_SYSCALL_ERROR_1; } - - pool_put (im->sad, old_sa); + ipsec_sa_del (old_sa->id); 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; }