diff options
Diffstat (limited to 'src/vnet/map/ip6_map_t.c')
| -rw-r--r-- | src/vnet/map/ip6_map_t.c | 1186 |
1 files changed, 0 insertions, 1186 deletions
diff --git a/src/vnet/map/ip6_map_t.c b/src/vnet/map/ip6_map_t.c deleted file mode 100644 index 05bac1d429d..00000000000 --- a/src/vnet/map/ip6_map_t.c +++ /dev/null @@ -1,1186 +0,0 @@ -/* - * Copyright (c) 2015 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -#include "map.h" - -#include "../ip/ip_frag.h" -#include <vnet/ip/ip6_to_ip4.h> -#include <vnet/ip/ip4_to_ip6.h> - -#define IP6_MAP_T_DUAL_LOOP - -typedef enum -{ - IP6_MAPT_NEXT_MAPT_TCP_UDP, - IP6_MAPT_NEXT_MAPT_ICMP, - IP6_MAPT_NEXT_MAPT_FRAGMENTED, - IP6_MAPT_NEXT_DROP, - IP6_MAPT_N_NEXT -} ip6_mapt_next_t; - -typedef enum -{ - IP6_MAPT_ICMP_NEXT_IP4_LOOKUP, - IP6_MAPT_ICMP_NEXT_IP4_FRAG, - IP6_MAPT_ICMP_NEXT_DROP, - IP6_MAPT_ICMP_N_NEXT -} ip6_mapt_icmp_next_t; - -typedef enum -{ - IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP, - IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG, - IP6_MAPT_TCP_UDP_NEXT_DROP, - IP6_MAPT_TCP_UDP_N_NEXT -} ip6_mapt_tcp_udp_next_t; - -typedef enum -{ - IP6_MAPT_FRAGMENTED_NEXT_IP4_LOOKUP, - IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG, - IP6_MAPT_FRAGMENTED_NEXT_DROP, - IP6_MAPT_FRAGMENTED_N_NEXT -} ip6_mapt_fragmented_next_t; - -static_always_inline int -ip6_map_fragment_cache (ip6_header_t * ip6, ip6_frag_hdr_t * frag, - map_domain_t * d, u16 port) -{ - u32 *ignore = NULL; - map_ip4_reass_lock (); - map_ip4_reass_t *r = map_ip4_reass_get (map_get_ip4 (&ip6->src_address, - d->flags), - ip6_map_t_embedded_address (d, - &ip6-> - dst_address), - frag_id_6to4 (frag->identification), - (ip6->protocol == - IP_PROTOCOL_ICMP6) ? - IP_PROTOCOL_ICMP : ip6->protocol, - &ignore); - if (r) - r->port = port; - - map_ip4_reass_unlock (); - return !r; -} - -/* Returns the associated port or -1 */ -static_always_inline i32 -ip6_map_fragment_get (ip6_header_t * ip6, ip6_frag_hdr_t * frag, - map_domain_t * d) -{ - u32 *ignore = NULL; - map_ip4_reass_lock (); - map_ip4_reass_t *r = map_ip4_reass_get (map_get_ip4 (&ip6->src_address, - d->flags), - ip6_map_t_embedded_address (d, - &ip6-> - dst_address), - frag_id_6to4 (frag->identification), - (ip6->protocol == - IP_PROTOCOL_ICMP6) ? - IP_PROTOCOL_ICMP : ip6->protocol, - &ignore); - i32 ret = r ? r->port : -1; - map_ip4_reass_unlock (); - return ret; -} - -typedef struct -{ - map_domain_t *d; - u16 id; -} icmp6_to_icmp_ctx_t; - -static int -ip6_to_ip4_set_icmp_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg) -{ - icmp6_to_icmp_ctx_t *ctx = arg; - map_main_t *mm = &map_main; - - if (mm->is_ce) - { - u32 ip4_dadr; - - //Security check - //Note that this prevents an intermediate IPv6 router from answering the request - ip4_dadr = map_get_ip4 (&ip6->dst_address, ctx->d->flags); - if (ip6->dst_address.as_u64[0] != - map_get_pfx_net (ctx->d, ip4_dadr, ctx->id) - || ip6->dst_address.as_u64[1] != map_get_sfx_net (ctx->d, ip4_dadr, - ctx->id)) - return -1; - - ip4->src_address.as_u32 = - ip6_map_t_embedded_address (ctx->d, &ip6->src_address); - ip4->dst_address.as_u32 = ip4_dadr; - } - else - { - u32 ip4_sadr; - - //Security check - //Note that this prevents an intermediate IPv6 router from answering the request - ip4_sadr = map_get_ip4 (&ip6->src_address, ctx->d->flags); - if (ip6->src_address.as_u64[0] != - map_get_pfx_net (ctx->d, ip4_sadr, ctx->id) - || ip6->src_address.as_u64[1] != map_get_sfx_net (ctx->d, ip4_sadr, - ctx->id)) - return -1; - - ip4->dst_address.as_u32 = - ip6_map_t_embedded_address (ctx->d, &ip6->dst_address); - ip4->src_address.as_u32 = ip4_sadr; - } - - return 0; -} - -static int -ip6_to_ip4_set_inner_icmp_cb (ip6_header_t * ip6, ip4_header_t * ip4, - void *arg) -{ - icmp6_to_icmp_ctx_t *ctx = arg; - map_main_t *mm = &map_main; - - if (mm->is_ce) - { - u32 inner_ip4_sadr; - - //Security check of inner packet - inner_ip4_sadr = map_get_ip4 (&ip6->src_address, ctx->d->flags); - if (ip6->src_address.as_u64[0] != - map_get_pfx_net (ctx->d, inner_ip4_sadr, ctx->id) - || ip6->src_address.as_u64[1] != map_get_sfx_net (ctx->d, - inner_ip4_sadr, - ctx->id)) - return -1; - - ip4->src_address.as_u32 = inner_ip4_sadr; - ip4->dst_address.as_u32 = - ip6_map_t_embedded_address (ctx->d, &ip6->dst_address); - } - else - { - u32 inner_ip4_dadr; - - //Security check of inner packet - inner_ip4_dadr = map_get_ip4 (&ip6->dst_address, ctx->d->flags); - if (ip6->dst_address.as_u64[0] != - map_get_pfx_net (ctx->d, inner_ip4_dadr, ctx->id) - || ip6->dst_address.as_u64[1] != map_get_sfx_net (ctx->d, - inner_ip4_dadr, - ctx->id)) - return -1; - - ip4->dst_address.as_u32 = inner_ip4_dadr; - ip4->src_address.as_u32 = - ip6_map_t_embedded_address (ctx->d, &ip6->src_address); - } - - return 0; -} - -static uword -ip6_map_t_icmp (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, next_index, *to_next, n_left_to_next; - vlib_node_runtime_t *error_node = - vlib_node_get_runtime (vm, ip6_map_t_icmp_node.index); - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - vlib_combined_counter_main_t *cm = map_main.domain_counters; - u32 thread_index = vlib_get_thread_index (); - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 pi0; - vlib_buffer_t *p0; - u8 error0; - ip6_mapt_icmp_next_t next0; - map_domain_t *d0; - u16 len0; - icmp6_to_icmp_ctx_t ctx0; - ip6_header_t *ip60; - icmp46_header_t *icmp0; - - pi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next += 1; - n_left_to_next -= 1; - error0 = MAP_ERROR_NONE; - next0 = IP6_MAPT_ICMP_NEXT_IP4_LOOKUP; - - p0 = vlib_get_buffer (vm, pi0); - ip60 = vlib_buffer_get_current (p0); - len0 = clib_net_to_host_u16 (ip60->payload_length); - icmp0 = (icmp46_header_t *) (ip60 + 1); - d0 = - pool_elt_at_index (map_main.domains, - vnet_buffer (p0)->map_t.map_domain_index); - - ctx0.id = - ip6_get_port (ip60, icmp0->type == ICMP6_echo_request, - p0->current_length); - ctx0.d = d0; - if (ctx0.id == 0) - { - // In case of 1:1 mapping, we don't care about the port - if (!(d0->ea_bits_len == 0 && d0->rules)) - { - error0 = MAP_ERROR_ICMP; - goto err0; - } - } - - if (icmp6_to_icmp - (p0, ip6_to_ip4_set_icmp_cb, &ctx0, - ip6_to_ip4_set_inner_icmp_cb, &ctx0)) - { - error0 = MAP_ERROR_ICMP; - goto err0; - } - - if (vnet_buffer (p0)->map_t.mtu < p0->current_length) - { - //Send to fragmentation node if necessary - vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; - vnet_buffer (p0)->ip_frag.header_offset = 0; - vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP; - next0 = IP6_MAPT_ICMP_NEXT_IP4_FRAG; - } - err0: - if (PREDICT_TRUE (error0 == MAP_ERROR_NONE)) - { - vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX, - thread_index, - vnet_buffer (p0)-> - map_t.map_domain_index, 1, - len0); - } - else - { - next0 = IP6_MAPT_ICMP_NEXT_DROP; - } - - p0->error = error_node->errors[error0]; - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, pi0, - next0); - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - return frame->n_vectors; -} - -static int -ip6_to_ip4_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *ctx) -{ - vlib_buffer_t *p = ctx; - - ip4->dst_address.as_u32 = vnet_buffer (p)->map_t.v6.daddr; - ip4->src_address.as_u32 = vnet_buffer (p)->map_t.v6.saddr; - - return 0; -} - -static uword -ip6_map_t_fragmented (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, next_index, *to_next, n_left_to_next; - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - vlib_node_runtime_t *error_node = - vlib_node_get_runtime (vm, ip6_map_t_fragmented_node.index); - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - -#ifdef IP6_MAP_T_DUAL_LOOP - while (n_left_from >= 4 && n_left_to_next >= 2) - { - u32 pi0, pi1; - vlib_buffer_t *p0, *p1; - u32 next0, next1; - - pi0 = to_next[0] = from[0]; - pi1 = to_next[1] = from[1]; - from += 2; - n_left_from -= 2; - to_next += 2; - n_left_to_next -= 2; - - next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP; - next1 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP; - p0 = vlib_get_buffer (vm, pi0); - p1 = vlib_get_buffer (vm, pi1); - - if (ip6_to_ip4_fragmented (p0, ip6_to_ip4_set_cb, p0)) - { - p0->error = error_node->errors[MAP_ERROR_FRAGMENT_DROPPED]; - next0 = IP6_MAPT_FRAGMENTED_NEXT_DROP; - } - else - { - if (vnet_buffer (p0)->map_t.mtu < p0->current_length) - { - //Send to fragmentation node if necessary - vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; - vnet_buffer (p0)->ip_frag.header_offset = 0; - vnet_buffer (p0)->ip_frag.next_index = - IP4_FRAG_NEXT_IP4_LOOKUP; - next0 = IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG; - } - } - - if (ip6_to_ip4_fragmented (p1, ip6_to_ip4_set_cb, p1)) - { - p1->error = error_node->errors[MAP_ERROR_FRAGMENT_DROPPED]; - next1 = IP6_MAPT_FRAGMENTED_NEXT_DROP; - } - else - { - if (vnet_buffer (p1)->map_t.mtu < p1->current_length) - { - //Send to fragmentation node if necessary - vnet_buffer (p1)->ip_frag.mtu = vnet_buffer (p1)->map_t.mtu; - vnet_buffer (p1)->ip_frag.header_offset = 0; - vnet_buffer (p1)->ip_frag.next_index = - IP4_FRAG_NEXT_IP4_LOOKUP; - next1 = IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG; - } - } - - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, - to_next, n_left_to_next, pi0, pi1, - next0, next1); - } -#endif - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 pi0; - vlib_buffer_t *p0; - u32 next0; - - pi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next += 1; - n_left_to_next -= 1; - - next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP; - p0 = vlib_get_buffer (vm, pi0); - - if (ip6_to_ip4_fragmented (p0, ip6_to_ip4_set_cb, p0)) - { - p0->error = error_node->errors[MAP_ERROR_FRAGMENT_DROPPED]; - next0 = IP6_MAPT_FRAGMENTED_NEXT_DROP; - } - else - { - if (vnet_buffer (p0)->map_t.mtu < p0->current_length) - { - //Send to fragmentation node if necessary - vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; - vnet_buffer (p0)->ip_frag.header_offset = 0; - vnet_buffer (p0)->ip_frag.next_index = - IP4_FRAG_NEXT_IP4_LOOKUP; - next0 = IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG; - } - } - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, pi0, - next0); - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - return frame->n_vectors; -} - -static uword -ip6_map_t_tcp_udp (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, next_index, *to_next, n_left_to_next; - vlib_node_runtime_t *error_node = - vlib_node_get_runtime (vm, ip6_map_t_tcp_udp_node.index); - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - -#ifdef IP6_MAP_T_DUAL_LOOP - while (n_left_from >= 4 && n_left_to_next >= 2) - { - u32 pi0, pi1; - vlib_buffer_t *p0, *p1; - ip6_mapt_tcp_udp_next_t next0, next1; - - pi0 = to_next[0] = from[0]; - pi1 = to_next[1] = from[1]; - from += 2; - n_left_from -= 2; - to_next += 2; - n_left_to_next -= 2; - next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP; - next1 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP; - - p0 = vlib_get_buffer (vm, pi0); - p1 = vlib_get_buffer (vm, pi1); - - if (ip6_to_ip4_tcp_udp (p0, ip6_to_ip4_set_cb, p0, 1)) - { - p0->error = error_node->errors[MAP_ERROR_UNKNOWN]; - next0 = IP6_MAPT_TCP_UDP_NEXT_DROP; - } - else - { - if (vnet_buffer (p0)->map_t.mtu < p0->current_length) - { - //Send to fragmentation node if necessary - vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; - vnet_buffer (p0)->ip_frag.header_offset = 0; - vnet_buffer (p0)->ip_frag.next_index = - IP4_FRAG_NEXT_IP4_LOOKUP; - next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG; - } - } - - if (ip6_to_ip4_tcp_udp (p1, ip6_to_ip4_set_cb, p1, 1)) - { - p1->error = error_node->errors[MAP_ERROR_UNKNOWN]; - next1 = IP6_MAPT_TCP_UDP_NEXT_DROP; - } - else - { - if (vnet_buffer (p1)->map_t.mtu < p1->current_length) - { - //Send to fragmentation node if necessary - vnet_buffer (p1)->ip_frag.mtu = vnet_buffer (p1)->map_t.mtu; - vnet_buffer (p1)->ip_frag.header_offset = 0; - vnet_buffer (p1)->ip_frag.next_index = - IP4_FRAG_NEXT_IP4_LOOKUP; - next1 = IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG; - } - } - - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, - n_left_to_next, pi0, pi1, next0, - next1); - } -#endif - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 pi0; - vlib_buffer_t *p0; - ip6_mapt_tcp_udp_next_t next0; - - pi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next += 1; - n_left_to_next -= 1; - next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP; - - p0 = vlib_get_buffer (vm, pi0); - - if (ip6_to_ip4_tcp_udp (p0, ip6_to_ip4_set_cb, p0, 1)) - { - p0->error = error_node->errors[MAP_ERROR_UNKNOWN]; - next0 = IP6_MAPT_TCP_UDP_NEXT_DROP; - } - else - { - if (vnet_buffer (p0)->map_t.mtu < p0->current_length) - { - //Send to fragmentation node if necessary - vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; - vnet_buffer (p0)->ip_frag.header_offset = 0; - vnet_buffer (p0)->ip_frag.next_index = - IP4_FRAG_NEXT_IP4_LOOKUP; - next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG; - } - } - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, pi0, - next0); - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - return frame->n_vectors; -} - -static_always_inline void -ip6_map_t_classify (vlib_buffer_t * p0, ip6_header_t * ip60, - map_domain_t * d0, i32 * map_port0, - u8 * error0, ip6_mapt_next_t * next0, - u32 l4_len0, ip6_frag_hdr_t * frag0) -{ - map_main_t *mm = &map_main; - u32 port_offset; - - if (mm->is_ce) - port_offset = 2; - else - port_offset = 0; - - if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset && - ip6_frag_hdr_offset (frag0))) - { - *next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED; - if (d0->ea_bits_len == 0 && d0->rules) - { - *map_port0 = 0; - } - else - { - *map_port0 = ip6_map_fragment_get (ip60, frag0, d0); - *error0 = (*map_port0 != -1) ? *error0 : MAP_ERROR_FRAGMENT_DROPPED; - } - } - else - if (PREDICT_TRUE - (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_TCP)) - { - *error0 = - l4_len0 < sizeof (tcp_header_t) ? MAP_ERROR_MALFORMED : *error0; - vnet_buffer (p0)->map_t.checksum_offset = - vnet_buffer (p0)->map_t.v6.l4_offset + 16; - *next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP; - *map_port0 = - (i32) * - ((u16 *) - u8_ptr_add (ip60, - vnet_buffer (p0)->map_t.v6.l4_offset + port_offset)); - } - else - if (PREDICT_TRUE - (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_UDP)) - { - *error0 = - l4_len0 < sizeof (udp_header_t) ? MAP_ERROR_MALFORMED : *error0; - vnet_buffer (p0)->map_t.checksum_offset = - vnet_buffer (p0)->map_t.v6.l4_offset + 6; - *next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP; - *map_port0 = - (i32) * - ((u16 *) - u8_ptr_add (ip60, - vnet_buffer (p0)->map_t.v6.l4_offset + port_offset)); - } - else if (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_ICMP6) - { - *error0 = - l4_len0 < sizeof (icmp46_header_t) ? MAP_ERROR_MALFORMED : *error0; - *next0 = IP6_MAPT_NEXT_MAPT_ICMP; - if (d0->ea_bits_len == 0 && d0->rules) - { - *map_port0 = 0; - } - else - if (((icmp46_header_t *) - u8_ptr_add (ip60, - vnet_buffer (p0)->map_t.v6.l4_offset))->code == - ICMP6_echo_reply - || ((icmp46_header_t *) - u8_ptr_add (ip60, - vnet_buffer (p0)->map_t.v6.l4_offset))->code == - ICMP6_echo_request) - { - *map_port0 = - (i32) * - ((u16 *) - u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset + 6)); - } - } - else - { - //TODO: In case of 1:1 mapping, it might be possible to do something with those packets. - *error0 = MAP_ERROR_BAD_PROTOCOL; - } -} - -static uword -ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, next_index, *to_next, n_left_to_next; - vlib_node_runtime_t *error_node = - vlib_node_get_runtime (vm, ip6_map_t_node.index); - map_main_t *mm = &map_main; - vlib_combined_counter_main_t *cm = map_main.domain_counters; - u32 thread_index = vlib_get_thread_index (); - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - -#ifdef IP6_MAP_T_DUAL_LOOP - while (n_left_from >= 4 && n_left_to_next >= 2) - { - u32 pi0, pi1; - vlib_buffer_t *p0, *p1; - ip6_header_t *ip60, *ip61; - u8 error0, error1; - ip6_mapt_next_t next0, next1; - u32 l4_len0, l4_len1; - i32 map_port0, map_port1; - map_domain_t *d0, *d1; - ip6_frag_hdr_t *frag0, *frag1; - next0 = next1 = 0; //Because compiler whines - - pi0 = to_next[0] = from[0]; - pi1 = to_next[1] = from[1]; - from += 2; - n_left_from -= 2; - to_next += 2; - n_left_to_next -= 2; - - error0 = MAP_ERROR_NONE; - error1 = MAP_ERROR_NONE; - - p0 = vlib_get_buffer (vm, pi0); - p1 = vlib_get_buffer (vm, pi1); - ip60 = vlib_buffer_get_current (p0); - ip61 = vlib_buffer_get_current (p1); - - if (mm->is_ce) - { - u32 daddr0, daddr1; - daddr0 = 0; /* TODO */ - daddr1 = 0; /* TODO */ - /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */ - - daddr0 = map_get_ip4 (&ip60->dst_address, 0 /*TODO*/); - daddr1 = map_get_ip4 (&ip61->dst_address, 0 /*TODO*/); - d0 = - ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX], - (ip4_address_t *) & daddr0, - &vnet_buffer (p0)->map_t.map_domain_index, - &error0); - d1 = - ip6_map_get_domain (vnet_buffer (p1)->ip.adj_index[VLIB_TX], - (ip4_address_t *) & daddr1, - &vnet_buffer (p1)->map_t.map_domain_index, - &error1); - - daddr0 = map_get_ip4 (&ip60->dst_address, d0->flags); - daddr1 = map_get_ip4 (&ip61->dst_address, d1->flags); - - vnet_buffer (p0)->map_t.v6.daddr = daddr0; - vnet_buffer (p1)->map_t.v6.daddr = daddr1; - vnet_buffer (p0)->map_t.v6.saddr = - ip6_map_t_embedded_address (d0, &ip60->src_address); - vnet_buffer (p1)->map_t.v6.saddr = - ip6_map_t_embedded_address (d1, &ip61->src_address); - } - else - { - u32 saddr0, saddr1; - saddr0 = 0; /* TODO */ - saddr1 = 0; /* TODO */ - /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */ - - saddr0 = map_get_ip4 (&ip60->src_address, 0 /*TODO*/); - saddr1 = map_get_ip4 (&ip61->src_address, 0 /*TODO*/); - d0 = - ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX], - (ip4_address_t *) & saddr0, - &vnet_buffer (p0)->map_t.map_domain_index, - &error0); - d1 = - ip6_map_get_domain (vnet_buffer (p1)->ip.adj_index[VLIB_TX], - (ip4_address_t *) & saddr1, - &vnet_buffer (p1)->map_t.map_domain_index, - &error1); - - saddr0 = map_get_ip4 (&ip60->src_address, d0->flags); - saddr1 = map_get_ip4 (&ip61->src_address, d1->flags); - - vnet_buffer (p0)->map_t.v6.saddr = saddr0; - vnet_buffer (p1)->map_t.v6.saddr = saddr1; - vnet_buffer (p0)->map_t.v6.daddr = - ip6_map_t_embedded_address (d0, &ip60->dst_address); - vnet_buffer (p1)->map_t.v6.daddr = - ip6_map_t_embedded_address (d1, &ip61->dst_address); - } - - vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0; - vnet_buffer (p1)->map_t.mtu = d1->mtu ? d1->mtu : ~0; - - if (PREDICT_FALSE (ip6_parse (ip60, p0->current_length, - &(vnet_buffer (p0)->map_t. - v6.l4_protocol), - &(vnet_buffer (p0)->map_t. - v6.l4_offset), - &(vnet_buffer (p0)->map_t. - v6.frag_offset)))) - { - error0 = MAP_ERROR_MALFORMED; - next0 = IP6_MAPT_NEXT_DROP; - } - - if (PREDICT_FALSE (ip6_parse (ip61, p1->current_length, - &(vnet_buffer (p1)->map_t. - v6.l4_protocol), - &(vnet_buffer (p1)->map_t. - v6.l4_offset), - &(vnet_buffer (p1)->map_t. - v6.frag_offset)))) - { - error1 = MAP_ERROR_MALFORMED; - next1 = IP6_MAPT_NEXT_DROP; - } - - map_port0 = map_port1 = -1; - l4_len0 = (u32) clib_net_to_host_u16 (ip60->payload_length) + - sizeof (*ip60) - vnet_buffer (p0)->map_t.v6.l4_offset; - l4_len1 = (u32) clib_net_to_host_u16 (ip61->payload_length) + - sizeof (*ip60) - vnet_buffer (p1)->map_t.v6.l4_offset; - frag0 = - (ip6_frag_hdr_t *) u8_ptr_add (ip60, - vnet_buffer (p0)->map_t. - v6.frag_offset); - frag1 = - (ip6_frag_hdr_t *) u8_ptr_add (ip61, - vnet_buffer (p1)->map_t. - v6.frag_offset); - - ip6_map_t_classify (p0, ip60, d0, &map_port0, &error0, &next0, - l4_len0, frag0); - ip6_map_t_classify (p1, ip61, d1, &map_port1, &error1, &next1, - l4_len1, frag1); - - if (PREDICT_FALSE - ((map_port0 != -1) - && (ip60->src_address.as_u64[0] != - map_get_pfx_net (d0, vnet_buffer (p0)->map_t.v6.saddr, - map_port0) - || ip60->src_address.as_u64[1] != map_get_sfx_net (d0, - vnet_buffer - (p0)->map_t.v6.saddr, - map_port0)))) - { - error0 = MAP_ERROR_SEC_CHECK; - } - - if (PREDICT_FALSE - ((map_port1 != -1) - && (ip61->src_address.as_u64[0] != - map_get_pfx_net (d1, vnet_buffer (p1)->map_t.v6.saddr, - map_port1) - || ip61->src_address.as_u64[1] != map_get_sfx_net (d1, - vnet_buffer - (p1)->map_t.v6.saddr, - map_port1)))) - { - error1 = MAP_ERROR_SEC_CHECK; - } - - if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset && - !ip6_frag_hdr_offset ((ip6_frag_hdr_t *) - u8_ptr_add (ip60, - vnet_buffer - (p0)->map_t. - v6.frag_offset))) - && (map_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules) - && (error0 == MAP_ERROR_NONE)) - { - ip6_map_fragment_cache (ip60, - (ip6_frag_hdr_t *) u8_ptr_add (ip60, - vnet_buffer - (p0)->map_t. - v6.frag_offset), - d0, map_port0); - } - - if (PREDICT_FALSE (vnet_buffer (p1)->map_t.v6.frag_offset && - !ip6_frag_hdr_offset ((ip6_frag_hdr_t *) - u8_ptr_add (ip61, - vnet_buffer - (p1)->map_t. - v6.frag_offset))) - && (map_port1 != -1) && (d1->ea_bits_len != 0 || !d1->rules) - && (error1 == MAP_ERROR_NONE)) - { - ip6_map_fragment_cache (ip61, - (ip6_frag_hdr_t *) u8_ptr_add (ip61, - vnet_buffer - (p1)->map_t. - v6.frag_offset), - d1, map_port1); - } - - if (PREDICT_TRUE - (error0 == MAP_ERROR_NONE && next0 != IP6_MAPT_NEXT_MAPT_ICMP)) - { - vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX, - thread_index, - vnet_buffer (p0)-> - map_t.map_domain_index, 1, - clib_net_to_host_u16 - (ip60->payload_length)); - } - - if (PREDICT_TRUE - (error1 == MAP_ERROR_NONE && next1 != IP6_MAPT_NEXT_MAPT_ICMP)) - { - vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX, - thread_index, - vnet_buffer (p1)-> - map_t.map_domain_index, 1, - clib_net_to_host_u16 - (ip61->payload_length)); - } - - next0 = (error0 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next0; - next1 = (error1 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next1; - p0->error = error_node->errors[error0]; - p1->error = error_node->errors[error1]; - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, - n_left_to_next, pi0, pi1, next0, - next1); - } -#endif - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 pi0; - vlib_buffer_t *p0; - ip6_header_t *ip60; - u8 error0; - u32 l4_len0; - i32 map_port0; - map_domain_t *d0; - ip6_frag_hdr_t *frag0; - u32 port_offset; - ip6_mapt_next_t next0 = 0; - - pi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next += 1; - n_left_to_next -= 1; - error0 = MAP_ERROR_NONE; - - p0 = vlib_get_buffer (vm, pi0); - ip60 = vlib_buffer_get_current (p0); - - if (mm->is_ce) - { - u32 daddr; - //Save daddr in a different variable to not overwrite ip.adj_index - daddr = 0; /* TODO */ - /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */ - - daddr = map_get_ip4 (&ip60->dst_address, 0 /*TODO*/); - d0 = - ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX], - (ip4_address_t *) & daddr, - &vnet_buffer (p0)->map_t.map_domain_index, - &error0); - - daddr = map_get_ip4 (&ip60->dst_address, d0->flags); - - //FIXME: What if d0 is null - vnet_buffer (p0)->map_t.v6.daddr = daddr; - vnet_buffer (p0)->map_t.v6.saddr = - ip6_map_t_embedded_address (d0, &ip60->src_address); - - port_offset = 2; - } - else - { - u32 saddr; - //Save saddr in a different variable to not overwrite ip.adj_index - saddr = 0; /* TODO */ - /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */ - - saddr = map_get_ip4 (&ip60->src_address, 0 /*TODO*/); - d0 = - ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX], - (ip4_address_t *) & saddr, - &vnet_buffer (p0)->map_t.map_domain_index, - &error0); - - saddr = map_get_ip4 (&ip60->src_address, d0->flags); - - //FIXME: What if d0 is null - vnet_buffer (p0)->map_t.v6.saddr = saddr; - vnet_buffer (p0)->map_t.v6.daddr = - ip6_map_t_embedded_address (d0, &ip60->dst_address); - - port_offset = 0; - } - - vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0; - - if (PREDICT_FALSE (ip6_parse (ip60, p0->current_length, - &(vnet_buffer (p0)->map_t. - v6.l4_protocol), - &(vnet_buffer (p0)->map_t. - v6.l4_offset), - &(vnet_buffer (p0)->map_t. - v6.frag_offset)))) - { - error0 = MAP_ERROR_MALFORMED; - next0 = IP6_MAPT_NEXT_DROP; - } - - map_port0 = -1; - l4_len0 = (u32) clib_net_to_host_u16 (ip60->payload_length) + - sizeof (*ip60) - vnet_buffer (p0)->map_t.v6.l4_offset; - frag0 = - (ip6_frag_hdr_t *) u8_ptr_add (ip60, - vnet_buffer (p0)->map_t. - v6.frag_offset); - - - if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset && - ip6_frag_hdr_offset (frag0))) - { - map_port0 = ip6_map_fragment_get (ip60, frag0, d0); - error0 = (map_port0 != -1) ? error0 : MAP_ERROR_FRAGMENT_MEMORY; - next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED; - } - else - if (PREDICT_TRUE - (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_TCP)) - { - error0 = - l4_len0 < - sizeof (tcp_header_t) ? MAP_ERROR_MALFORMED : error0; - vnet_buffer (p0)->map_t.checksum_offset = - vnet_buffer (p0)->map_t.v6.l4_offset + 16; - next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP; - map_port0 = - (i32) * - ((u16 *) - u8_ptr_add (ip60, - vnet_buffer (p0)->map_t.v6.l4_offset + - port_offset)); - } - else - if (PREDICT_TRUE - (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_UDP)) - { - error0 = - l4_len0 < - sizeof (udp_header_t) ? MAP_ERROR_MALFORMED : error0; - vnet_buffer (p0)->map_t.checksum_offset = - vnet_buffer (p0)->map_t.v6.l4_offset + 6; - next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP; - map_port0 = - (i32) * - ((u16 *) - u8_ptr_add (ip60, - vnet_buffer (p0)->map_t.v6.l4_offset + - port_offset)); - } - else if (vnet_buffer (p0)->map_t.v6.l4_protocol == - IP_PROTOCOL_ICMP6) - { - error0 = - l4_len0 < - sizeof (icmp46_header_t) ? MAP_ERROR_MALFORMED : error0; - next0 = IP6_MAPT_NEXT_MAPT_ICMP; - if (((icmp46_header_t *) - u8_ptr_add (ip60, - vnet_buffer (p0)->map_t.v6.l4_offset))->code == - ICMP6_echo_reply - || ((icmp46_header_t *) - u8_ptr_add (ip60, - vnet_buffer (p0)->map_t.v6. - l4_offset))->code == ICMP6_echo_request) - map_port0 = - (i32) * - ((u16 *) - u8_ptr_add (ip60, - vnet_buffer (p0)->map_t.v6.l4_offset + 6)); - } - else - { - //TODO: In case of 1:1 mapping, it might be possible to do something with those packets. - error0 = MAP_ERROR_BAD_PROTOCOL; - } - - //Security check - if (PREDICT_FALSE - ((!mm->is_ce) && (map_port0 != -1) - && (ip60->src_address.as_u64[0] != - map_get_pfx_net (d0, vnet_buffer (p0)->map_t.v6.saddr, - map_port0) - || ip60->src_address.as_u64[1] != map_get_sfx_net (d0, - vnet_buffer - (p0)->map_t.v6.saddr, - map_port0)))) - { - //Security check when src_port0 is not zero (non-first fragment, UDP or TCP) - error0 = MAP_ERROR_SEC_CHECK; - } - - //Fragmented first packet needs to be cached for following packets - if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset && - !ip6_frag_hdr_offset ((ip6_frag_hdr_t *) - u8_ptr_add (ip60, - vnet_buffer - (p0)->map_t. - v6.frag_offset))) - && (map_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules) - && (error0 == MAP_ERROR_NONE)) - { - ip6_map_fragment_cache (ip60, - (ip6_frag_hdr_t *) u8_ptr_add (ip60, - vnet_buffer - (p0)->map_t. - v6.frag_offset), - d0, map_port0); - } - - if (PREDICT_TRUE - (error0 == MAP_ERROR_NONE && next0 != IP6_MAPT_NEXT_MAPT_ICMP)) - { - vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX, - thread_index, - vnet_buffer (p0)-> - map_t.map_domain_index, 1, - clib_net_to_host_u16 - (ip60->payload_length)); - } - - next0 = (error0 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next0; - p0->error = error_node->errors[error0]; - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, pi0, - next0); - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - return frame->n_vectors; -} - -static char *map_t_error_strings[] = { -#define _(sym,string) string, - foreach_map_error -#undef _ -}; - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(ip6_map_t_fragmented_node) = { - .function = ip6_map_t_fragmented, - .name = "ip6-map-t-fragmented", - .vector_size = sizeof (u32), - .format_trace = format_map_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = MAP_N_ERROR, - .error_strings = map_t_error_strings, - - .n_next_nodes = IP6_MAPT_FRAGMENTED_N_NEXT, - .next_nodes = { - [IP6_MAPT_FRAGMENTED_NEXT_IP4_LOOKUP] = "ip4-lookup", - [IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME, - [IP6_MAPT_FRAGMENTED_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(ip6_map_t_icmp_node) = { - .function = ip6_map_t_icmp, - .name = "ip6-map-t-icmp", - .vector_size = sizeof (u32), - .format_trace = format_map_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = MAP_N_ERROR, - .error_strings = map_t_error_strings, - - .n_next_nodes = IP6_MAPT_ICMP_N_NEXT, - .next_nodes = { - [IP6_MAPT_ICMP_NEXT_IP4_LOOKUP] = "ip4-lookup", - [IP6_MAPT_ICMP_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME, - [IP6_MAPT_ICMP_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(ip6_map_t_tcp_udp_node) = { - .function = ip6_map_t_tcp_udp, - .name = "ip6-map-t-tcp-udp", - .vector_size = sizeof (u32), - .format_trace = format_map_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = MAP_N_ERROR, - .error_strings = map_t_error_strings, - - .n_next_nodes = IP6_MAPT_TCP_UDP_N_NEXT, - .next_nodes = { - [IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP] = "ip4-lookup", - [IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME, - [IP6_MAPT_TCP_UDP_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(ip6_map_t_node) = { - .function = ip6_map_t, - .name = "ip6-map-t", - .vector_size = sizeof(u32), - .format_trace = format_map_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = MAP_N_ERROR, - .error_strings = map_t_error_strings, - - .n_next_nodes = IP6_MAPT_N_NEXT, - .next_nodes = { - [IP6_MAPT_NEXT_MAPT_TCP_UDP] = "ip6-map-t-tcp-udp", - [IP6_MAPT_NEXT_MAPT_ICMP] = "ip6-map-t-icmp", - [IP6_MAPT_NEXT_MAPT_FRAGMENTED] = "ip6-map-t-fragmented", - [IP6_MAPT_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |