X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fipsec%2Fipsec_if.c;h=41089b6c2ab2a60525c08a1ec8906026843e49e0;hb=1ba5bc8d888d0164dd6e38857cbed09ab7ce1d8b;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..41089b6c2ab 100644 --- a/src/vnet/ipsec/ipsec_if.c +++ b/src/vnet/ipsec/ipsec_if.c @@ -18,6 +18,8 @@ #include #include #include +#include +#include #include #include @@ -28,17 +30,132 @@ 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 char *ipsec_if_tx_error_strings[] = { +#define _(sym,string) string, + foreach_ipsec_if_tx_error +#undef _ +}; + +typedef enum +{ +#define _(sym,str) IPSEC_IF_OUTPUT_ERROR_##sym, + foreach_ipsec_if_tx_error +#undef _ + IPSEC_IF_TX_N_ERROR, +} ipsec_if_tx_error_t; + +typedef struct +{ + u32 spi; + u32 seq; +} ipsec_if_tx_trace_t; + +u8 * +format_ipsec_if_tx_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + ipsec_if_tx_trace_t *t = va_arg (*args, ipsec_if_tx_trace_t *); + + s = format (s, "IPSec: spi %u seq %u", t->spi, t->seq); + return s; +} + +static void +ipsec_output_trace (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame, const ipsec_tunnel_if_t * t0) +{ + ipsec_main_t *im = &ipsec_main; + u32 *from, n_left; + + n_left = frame->n_vectors; + from = vlib_frame_vector_args (frame); + + while (n_left > 0) + { + vlib_buffer_t *b0; + + b0 = vlib_get_buffer (vm, from[0]); + + if (b0->flags & VLIB_BUFFER_IS_TRACED) + { + ipsec_if_tx_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + ipsec_sa_t *sa0 = pool_elt_at_index (im->sad, t0->output_sa_index); + tr->spi = sa0->spi; + tr->seq = sa0->seq; + } + + from += 1; + n_left -= 1; + } } -static uword -dummy_interface_tx (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) +VNET_DEVICE_CLASS_TX_FN (ipsec_device_class) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) { - clib_warning ("you shouldn't be here, leaking buffers..."); + ipsec_main_t *im = &ipsec_main; + u32 *from, n_left; + vnet_interface_output_runtime_t *rd = (void *) node->runtime_data; + const ipsec_tunnel_if_t *t0; + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; + u16 nexts[VLIB_FRAME_SIZE]; + + from = vlib_frame_vector_args (frame); + t0 = pool_elt_at_index (im->tunnel_interfaces, rd->dev_instance); + n_left = frame->n_vectors; + b = bufs; + + /* All going to encrypt */ + clib_memset (nexts, 0, sizeof (nexts)); + + if (node->flags & VLIB_NODE_FLAG_TRACE) + ipsec_output_trace (vm, node, frame, t0); + + vlib_get_buffers (vm, from, bufs, n_left); + + while (n_left >= 8) + { + /* Prefetch the buffer header for the N+2 loop iteration */ + vlib_prefetch_buffer_header (b[4], STORE); + vlib_prefetch_buffer_header (b[5], STORE); + vlib_prefetch_buffer_header (b[6], STORE); + vlib_prefetch_buffer_header (b[7], STORE); + + vnet_buffer (b[0])->ipsec.sad_index = t0->output_sa_index; + vnet_buffer (b[1])->ipsec.sad_index = t0->output_sa_index; + vnet_buffer (b[2])->ipsec.sad_index = t0->output_sa_index; + vnet_buffer (b[3])->ipsec.sad_index = t0->output_sa_index; + + n_left -= 4; + b += 4; + } + while (n_left > 0) + { + vnet_buffer (b[0])->ipsec.sad_index = t0->output_sa_index; + + n_left -= 1; + b += 1; + } + + vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); + return frame->n_vectors; } + static clib_error_t * ipsec_admin_up_down_function (vnet_main_t * vnm, u32 hw_if_index, u32 flags) { @@ -50,36 +167,29 @@ 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 +197,28 @@ 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); - - 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; - } - + 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); - - 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; - } + err = ipsec_add_del_sa_sess_cb (im, t->output_sa_index, 0); + if (err) + return err; } return /* no error */ 0; } + /* *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, + .format_tx_trace = format_ipsec_if_tx_trace, + .tx_function_n_errors = IPSEC_IF_TX_N_ERROR, + .tx_function_error_strings = ipsec_if_tx_error_strings, .admin_up_down_function = ipsec_admin_up_down_function, }; /* *INDENT-ON* */ @@ -147,6 +249,18 @@ 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, @@ -157,10 +271,26 @@ 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 +298,144 @@ 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 (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); - } + pool_get_aligned_zero (im->tunnel_interfaces, t, CLIB_CACHE_LINE_BYTES); - 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_EXTENDED_SEQ_NUM; + 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_UNIMPLEMENTED; + + 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_UNIMPLEMENTED; + + /* 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; - vnet_feature_enable_disable ("interface-output", "ipsec-if-output", - hi->sw_if_index, 1, 0, 0); + /* add esp4/6 as the next-node-index of this tx-node */ + uword slot = vlib_node_add_next_with_slot + (vnm->vlib_main, hi->tx_node_index, + is_ip6 ? im->esp6_encrypt_node_index : im->esp4_encrypt_node_index, + 0); + ASSERT (slot == 0); + + t->hw_if_index = hw_if_index; + t->sw_if_index = hi->sw_if_index; + + vnet_feature_enable_disable ("interface-output", + args->is_ip6 ? "ipsec6-if-output" : + "ipsec4-if-output", hi->sw_if_index, 1, 0, + 0); /*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); + vnet_feature_enable_disable ("interface-output", + args->is_ip6 ? "ipsec6-if-output" : + "ipsec4-if-output", hi->sw_if_index, 0, 0, + 0); + vnet_delete_hw_interface (vnm, t->hw_if_index); - 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); - - 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); - 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) @@ -302,7 +452,7 @@ ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm, 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); @@ -317,11 +467,17 @@ ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm, sa = pool_elt_at_index (im->sad, p[0]); if (sa->is_tunnel) - key = (u64) sa->tunnel_dst_addr.ip4.as_u32 << 32 | (u64) sa->spi; + { + key.remote_ip = sa->tunnel_dst_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->remote_ip.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 +486,25 @@ 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 { @@ -350,7 +513,7 @@ 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; @@ -374,30 +537,26 @@ ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index, 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)); + 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)); + 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)); + 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)); + ipsec_sa_set_integ_alg (sa, alg); + ipsec_mk_key (&sa->integ_key, key, vec_len (key)); } else return VNET_API_ERROR_INVALID_VALUE; @@ -434,35 +593,70 @@ 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 (sa->is_tunnel_ip6 ^ old_sa->is_tunnel_ip6) + { + clib_warning ("IPsec interface SA endpoints type can't be changed"); + return VNET_API_ERROR_INVALID_VALUE; + } + + if (sa->is_tunnel_ip6) + { + 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 = (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); + /* 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 (sa->is_tunnel_ip6 ^ old_sa->is_tunnel_ip6) + { + clib_warning ("IPsec interface SA endpoints type can't be changed"); + return VNET_API_ERROR_INVALID_VALUE; + } + t->output_sa_index = sa_index; } @@ -470,15 +664,11 @@ ipsec_set_interface_sa (vnet_main_t * vnm, u32 hw_if_index, u32 sa_id, 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); return 0; @@ -490,8 +680,18 @@ 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; }