diff options
Diffstat (limited to 'vnet/vnet/ipsec/ipsec_input.c')
| -rw-r--r-- | vnet/vnet/ipsec/ipsec_input.c | 472 |
1 files changed, 249 insertions, 223 deletions
diff --git a/vnet/vnet/ipsec/ipsec_input.c b/vnet/vnet/ipsec/ipsec_input.c index e7011177a33..2bc4e2b4999 100644 --- a/vnet/vnet/ipsec/ipsec_input.c +++ b/vnet/vnet/ipsec/ipsec_input.c @@ -27,10 +27,11 @@ _(DROP, "error-drop") \ _(ESP_DECRYPT, "esp-decrypt") #define _(v, s) IPSEC_INPUT_NEXT_##v, -typedef enum { +typedef enum +{ foreach_ipsec_input_next #undef _ - IPSEC_INPUT_N_NEXT, + IPSEC_INPUT_N_NEXT, } ipsec_input_next_t; @@ -39,147 +40,152 @@ typedef enum { _(DECRYPTION_FAILED, "IPSEC decryption failed") -typedef enum { +typedef enum +{ #define _(sym,str) IPSEC_INPUT_ERROR_##sym, foreach_ipsec_input_error #undef _ - IPSEC_INPUT_N_ERROR, + IPSEC_INPUT_N_ERROR, } ipsec_input_error_t; -static char * ipsec_input_error_strings[] = { +static char *ipsec_input_error_strings[] = { #define _(sym,string) string, foreach_ipsec_input_error #undef _ }; -typedef struct { +typedef struct +{ u32 tunnel_index; u32 spi; u32 seq; } ipsec_input_trace_t; /* packet trace format function */ -static u8 * format_ipsec_input_trace (u8 * s, va_list * args) +static u8 * +format_ipsec_input_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_input_trace_t * t = va_arg (*args, ipsec_input_trace_t *); + ipsec_input_trace_t *t = va_arg (*args, ipsec_input_trace_t *); if (t->tunnel_index != ~0) - { - s = format (s, "esp: tunnel %u spi %u seq %u", t->tunnel_index, t->spi, t->seq); - } + { + s = + format (s, "esp: tunnel %u spi %u seq %u", t->tunnel_index, t->spi, + t->seq); + } else - { - s = format (s, "esp: no tunnel spi %u seq %u",t->spi, t->seq); - } + { + s = format (s, "esp: no tunnel spi %u seq %u", t->spi, t->seq); + } return s; } always_inline ipsec_policy_t * -ipsec_input_protect_policy_match(ipsec_spd_t * spd, u32 sa, u32 da, u32 spi) +ipsec_input_protect_policy_match (ipsec_spd_t * spd, u32 sa, u32 da, u32 spi) { ipsec_main_t *im = &ipsec_main; - ipsec_policy_t * p; - ipsec_sa_t * s; - u32 * i; + ipsec_policy_t *p; + ipsec_sa_t *s; + u32 *i; - vec_foreach(i, spd->ipv4_inbound_protect_policy_indices) - { - p = pool_elt_at_index(spd->policies, *i); - s = pool_elt_at_index(im->sad, p->sa_index); + vec_foreach (i, spd->ipv4_inbound_protect_policy_indices) + { + p = pool_elt_at_index (spd->policies, *i); + s = pool_elt_at_index (im->sad, p->sa_index); - if (spi != s->spi) - continue; + if (spi != s->spi) + continue; - if (s->is_tunnel) - { - if (da != clib_net_to_host_u32(s->tunnel_dst_addr.ip4.as_u32)) - continue; + if (s->is_tunnel) + { + if (da != clib_net_to_host_u32 (s->tunnel_dst_addr.ip4.as_u32)) + continue; - if (sa != clib_net_to_host_u32(s->tunnel_src_addr.ip4.as_u32)) - continue; + if (sa != clib_net_to_host_u32 (s->tunnel_src_addr.ip4.as_u32)) + continue; - return p; - } + return p; + } - if (da < clib_net_to_host_u32(p->laddr.start.ip4.as_u32)) - continue; + if (da < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32)) + continue; - if (da > clib_net_to_host_u32(p->laddr.stop.ip4.as_u32)) - continue; + if (da > clib_net_to_host_u32 (p->laddr.stop.ip4.as_u32)) + continue; - if (sa < clib_net_to_host_u32(p->raddr.start.ip4.as_u32)) - continue; + if (sa < clib_net_to_host_u32 (p->raddr.start.ip4.as_u32)) + continue; - if (sa > clib_net_to_host_u32(p->raddr.stop.ip4.as_u32)) - continue; + if (sa > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32)) + continue; - return p; - } - return 0; + return p; + } + return 0; } always_inline uword -ip6_addr_match_range (ip6_address_t * a, ip6_address_t * la, ip6_address_t * ua) +ip6_addr_match_range (ip6_address_t * a, ip6_address_t * la, + ip6_address_t * ua) { - if ((memcmp(a->as_u64, la->as_u64, 2 * sizeof(u64)) >= 0) && - (memcmp(a->as_u64, ua->as_u64, 2 * sizeof(u64)) <= 0)) + if ((memcmp (a->as_u64, la->as_u64, 2 * sizeof (u64)) >= 0) && + (memcmp (a->as_u64, ua->as_u64, 2 * sizeof (u64)) <= 0)) return 1; return 0; } always_inline ipsec_policy_t * ipsec_input_ip6_protect_policy_match (ipsec_spd_t * spd, - ip6_address_t * sa, - ip6_address_t * da, - u32 spi) + ip6_address_t * sa, + ip6_address_t * da, u32 spi) { ipsec_main_t *im = &ipsec_main; - ipsec_policy_t * p; - ipsec_sa_t * s; - u32 * i; + ipsec_policy_t *p; + ipsec_sa_t *s; + u32 *i; - vec_foreach(i, spd->ipv6_inbound_protect_policy_indices) - { - p = pool_elt_at_index(spd->policies, *i); - s = pool_elt_at_index(im->sad, p->sa_index); + vec_foreach (i, spd->ipv6_inbound_protect_policy_indices) + { + p = pool_elt_at_index (spd->policies, *i); + s = pool_elt_at_index (im->sad, p->sa_index); - if (spi != s->spi) - continue; + if (spi != s->spi) + continue; - if (s->is_tunnel) - { - if (!ip6_address_is_equal(sa, &s->tunnel_src_addr.ip6)) - continue; + if (s->is_tunnel) + { + if (!ip6_address_is_equal (sa, &s->tunnel_src_addr.ip6)) + continue; - if (!ip6_address_is_equal(da, &s->tunnel_dst_addr.ip6)) - continue; + if (!ip6_address_is_equal (da, &s->tunnel_dst_addr.ip6)) + continue; - return p; - } + return p; + } - if (!ip6_addr_match_range(sa, &p->raddr.start.ip6, &p->raddr.stop.ip6)) - continue; + if (!ip6_addr_match_range (sa, &p->raddr.start.ip6, &p->raddr.stop.ip6)) + continue; - if (!ip6_addr_match_range(da, &p->laddr.start.ip6, &p->laddr.stop.ip6)) - continue; + if (!ip6_addr_match_range (da, &p->laddr.start.ip6, &p->laddr.stop.ip6)) + continue; - return p; - } - return 0; + return p; + } + return 0; } static vlib_node_registration_t ipsec_input_ip4_node; static uword ipsec_input_ip4_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) { - ip4_main_t * i4m = &ip4_main; - ip_lookup_main_t * lm = &i4m->lookup_main; - ip_config_main_t * cm = &lm->rx_config_mains[VNET_UNICAST]; + ip4_main_t *i4m = &ip4_main; + ip_lookup_main_t *lm = &i4m->lookup_main; + ip_config_main_t *cm = &lm->rx_config_mains[VNET_UNICAST]; u32 n_left_from, *from, next_index, *to_next; ipsec_main_t *im = &ipsec_main; @@ -195,81 +201,91 @@ ipsec_input_ip4_node_fn (vlib_main_t * vm, 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 bi0, next0; - vlib_buffer_t * b0; - ip4_header_t *ip0; - esp_header_t *esp0; - ip4_ipsec_config_t * c0; - u32 tunnel_index0 = ~0; - ipsec_spd_t * spd0; - - bi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next +=1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - c0 = vnet_get_config_data (&cm->config_main, - &b0->current_config_index, - &next0, sizeof (c0[0])); - - spd0 = pool_elt_at_index(im->spds, c0->spd_index); - - ip0 = vlib_buffer_get_current (b0); - esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0)); - - if (PREDICT_TRUE(ip0->protocol == IP_PROTOCOL_IPSEC_ESP)) - { + { + u32 bi0, next0; + vlib_buffer_t *b0; + ip4_header_t *ip0; + esp_header_t *esp0; + ip4_ipsec_config_t *c0; + u32 tunnel_index0 = ~0; + ipsec_spd_t *spd0; + + bi0 = to_next[0] = from[0]; + from += 1; + n_left_from -= 1; + to_next += 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + c0 = vnet_get_config_data (&cm->config_main, + &b0->current_config_index, + &next0, sizeof (c0[0])); + + spd0 = pool_elt_at_index (im->spds, c0->spd_index); + + ip0 = vlib_buffer_get_current (b0); + esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0)); + + if (PREDICT_TRUE (ip0->protocol == IP_PROTOCOL_IPSEC_ESP)) + { #if 0 - clib_warning("packet received from %U to %U spi %u size %u spd_id %u", - format_ip4_address, ip0->src_address.as_u8, - format_ip4_address, ip0->dst_address.as_u8, - clib_net_to_host_u32(esp0->spi), - clib_net_to_host_u16(ip0->length), - spd0->id); + clib_warning + ("packet received from %U to %U spi %u size %u spd_id %u", + format_ip4_address, ip0->src_address.as_u8, + format_ip4_address, ip0->dst_address.as_u8, + clib_net_to_host_u32 (esp0->spi), + clib_net_to_host_u16 (ip0->length), spd0->id); #endif - ipsec_policy_t * p0; - p0 = ipsec_input_protect_policy_match(spd0, - clib_net_to_host_u32(ip0->src_address.as_u32), - clib_net_to_host_u32(ip0->dst_address.as_u32), - clib_net_to_host_u32(esp0->spi)); - - if (PREDICT_TRUE(p0 != 0)) - { - p0->counter.packets++; - p0->counter.bytes += clib_net_to_host_u16(ip0->length); - vnet_buffer(b0)->output_features.ipsec_sad_index = p0->sa_index; - next0 = IPSEC_INPUT_NEXT_ESP_DECRYPT; - vlib_buffer_advance(b0, ip4_header_bytes (ip0)); - goto trace0; - } - } - - /* FIXME bypass and discard */ - -trace0: - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) { - ipsec_input_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->tunnel_index = tunnel_index0; - tr->spi = clib_host_to_net_u32(esp0->spi); - tr->seq = clib_host_to_net_u32(esp0->seq); - } - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, bi0, next0); - } + ipsec_policy_t *p0; + p0 = ipsec_input_protect_policy_match (spd0, + clib_net_to_host_u32 + (ip0->src_address. + as_u32), + clib_net_to_host_u32 + (ip0->dst_address. + as_u32), + clib_net_to_host_u32 + (esp0->spi)); + + if (PREDICT_TRUE (p0 != 0)) + { + p0->counter.packets++; + p0->counter.bytes += clib_net_to_host_u16 (ip0->length); + vnet_buffer (b0)->output_features.ipsec_sad_index = + p0->sa_index; + next0 = IPSEC_INPUT_NEXT_ESP_DECRYPT; + vlib_buffer_advance (b0, ip4_header_bytes (ip0)); + goto trace0; + } + } + + /* FIXME bypass and discard */ + + trace0: + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_input_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + tr->tunnel_index = tunnel_index0; + tr->spi = clib_host_to_net_u32 (esp0->spi); + tr->seq = clib_host_to_net_u32 (esp0->seq); + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, + to_next, n_left_to_next, bi0, + next0); + } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } vlib_node_increment_counter (vm, ipsec_input_ip4_node.index, - IPSEC_INPUT_ERROR_RX_PKTS, - from_frame->n_vectors); + IPSEC_INPUT_ERROR_RX_PKTS, + from_frame->n_vectors); return from_frame->n_vectors; } +/* *INDENT-OFF* */ VLIB_REGISTER_NODE (ipsec_input_ip4_node,static) = { .function = ipsec_input_ip4_node_fn, .name = "ipsec-input-ip4", @@ -287,21 +303,19 @@ VLIB_REGISTER_NODE (ipsec_input_ip4_node,static) = { #undef _ }, }; +/* *INDENT-ON* */ -VLIB_NODE_FUNCTION_MULTIARCH (ipsec_input_ip4_node, - ipsec_input_ip4_node_fn) +VLIB_NODE_FUNCTION_MULTIARCH (ipsec_input_ip4_node, ipsec_input_ip4_node_fn) + static vlib_node_registration_t ipsec_input_ip6_node; - -static vlib_node_registration_t ipsec_input_ip6_node; - -static uword -ipsec_input_ip6_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) + static uword + ipsec_input_ip6_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) { - ip6_main_t * i6m = &ip6_main; - ip_lookup_main_t * lm = &i6m->lookup_main; - ip_config_main_t * cm = &lm->rx_config_mains[VNET_UNICAST]; + ip6_main_t *i6m = &ip6_main; + ip_lookup_main_t *lm = &i6m->lookup_main; + ip_config_main_t *cm = &lm->rx_config_mains[VNET_UNICAST]; u32 n_left_from, *from, next_index, *to_next; ipsec_main_t *im = &ipsec_main; @@ -317,81 +331,87 @@ ipsec_input_ip6_node_fn (vlib_main_t * vm, 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 bi0, next0; - vlib_buffer_t * b0; - ip6_header_t *ip0; - esp_header_t *esp0; - ip4_ipsec_config_t * c0; - u32 tunnel_index0 = ~0; - ipsec_spd_t * spd0; - u32 header_size = sizeof(ip0[0]); - - bi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next +=1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - c0 = vnet_get_config_data (&cm->config_main, - &b0->current_config_index, - &next0, sizeof (c0[0])); - - spd0 = pool_elt_at_index(im->spds, c0->spd_index); - - ip0 = vlib_buffer_get_current (b0); - esp0 = (esp_header_t *) ((u8 *) ip0 + header_size); - - if (PREDICT_TRUE(ip0->protocol == IP_PROTOCOL_IPSEC_ESP)) - { + { + u32 bi0, next0; + vlib_buffer_t *b0; + ip6_header_t *ip0; + esp_header_t *esp0; + ip4_ipsec_config_t *c0; + u32 tunnel_index0 = ~0; + ipsec_spd_t *spd0; + u32 header_size = sizeof (ip0[0]); + + bi0 = to_next[0] = from[0]; + from += 1; + n_left_from -= 1; + to_next += 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + c0 = vnet_get_config_data (&cm->config_main, + &b0->current_config_index, + &next0, sizeof (c0[0])); + + spd0 = pool_elt_at_index (im->spds, c0->spd_index); + + ip0 = vlib_buffer_get_current (b0); + esp0 = (esp_header_t *) ((u8 *) ip0 + header_size); + + if (PREDICT_TRUE (ip0->protocol == IP_PROTOCOL_IPSEC_ESP)) + { #if 0 - clib_warning("packet received from %U to %U spi %u size %u spd_id %u", - format_ip6_address, &ip0->src_address, - format_ip6_address, &ip0->dst_address, - clib_net_to_host_u32(esp0->spi), - clib_net_to_host_u16(ip0->payload_length) + header_size, - spd0->id); + clib_warning + ("packet received from %U to %U spi %u size %u spd_id %u", + format_ip6_address, &ip0->src_address, format_ip6_address, + &ip0->dst_address, clib_net_to_host_u32 (esp0->spi), + clib_net_to_host_u16 (ip0->payload_length) + header_size, + spd0->id); #endif - ipsec_policy_t * p0; - p0 = ipsec_input_ip6_protect_policy_match(spd0, - &ip0->src_address, - &ip0->dst_address, - clib_net_to_host_u32(esp0->spi)); - - if (PREDICT_TRUE(p0 != 0)) - { - p0->counter.packets++; - p0->counter.bytes += clib_net_to_host_u16(ip0->payload_length); - p0->counter.bytes += header_size; - vnet_buffer(b0)->output_features.ipsec_sad_index = p0->sa_index; - next0 = IPSEC_INPUT_NEXT_ESP_DECRYPT; - vlib_buffer_advance(b0, header_size); - goto trace0; - } - } - -trace0: - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) { - ipsec_input_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->tunnel_index = tunnel_index0; - tr->spi = clib_host_to_net_u32(esp0->spi); - tr->seq = clib_host_to_net_u32(esp0->seq); - } - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, - n_left_to_next, bi0, next0); - } + ipsec_policy_t *p0; + p0 = ipsec_input_ip6_protect_policy_match (spd0, + &ip0->src_address, + &ip0->dst_address, + clib_net_to_host_u32 + (esp0->spi)); + + if (PREDICT_TRUE (p0 != 0)) + { + p0->counter.packets++; + p0->counter.bytes += + clib_net_to_host_u16 (ip0->payload_length); + p0->counter.bytes += header_size; + vnet_buffer (b0)->output_features.ipsec_sad_index = + p0->sa_index; + next0 = IPSEC_INPUT_NEXT_ESP_DECRYPT; + vlib_buffer_advance (b0, header_size); + goto trace0; + } + } + + trace0: + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_input_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + tr->tunnel_index = tunnel_index0; + tr->spi = clib_host_to_net_u32 (esp0->spi); + tr->seq = clib_host_to_net_u32 (esp0->seq); + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } vlib_node_increment_counter (vm, ipsec_input_ip6_node.index, - IPSEC_INPUT_ERROR_RX_PKTS, - from_frame->n_vectors); + IPSEC_INPUT_ERROR_RX_PKTS, + from_frame->n_vectors); return from_frame->n_vectors; } +/* *INDENT-OFF* */ VLIB_REGISTER_NODE (ipsec_input_ip6_node,static) = { .function = ipsec_input_ip6_node_fn, .name = "ipsec-input-ip6", @@ -409,7 +429,13 @@ VLIB_REGISTER_NODE (ipsec_input_ip6_node,static) = { #undef _ }, }; +/* *INDENT-ON* */ -VLIB_NODE_FUNCTION_MULTIARCH (ipsec_input_ip6_node, - ipsec_input_ip6_node_fn) - +VLIB_NODE_FUNCTION_MULTIARCH (ipsec_input_ip6_node, ipsec_input_ip6_node_fn) +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |