#include <vnet/ipsec/ipsec_io.h>
#include <vnet/ipsec/ipsec_punt.h>
#include <vnet/ipsec/ipsec_tun.h>
+#include <vnet/ipsec/ipsec.api_enum.h>
#include <vnet/ip/ip4_input.h>
-/* Statistics (not really errors) */
-#define foreach_ipsec_tun_protect_input_error \
- _(RX, "good packets received") \
- _(DISABLED, "ipsec packets received on disabled interface") \
- _(NO_TUNNEL, "no matching tunnel") \
- _(TUNNEL_MISMATCH, "SPI-tunnel mismatch") \
- _(NAT_KEEPALIVE, "NAT Keepalive") \
- _(TOO_SHORT, "Too Short") \
- _(SPI_0, "SPI 0")
-
-static char *ipsec_tun_protect_input_error_strings[] = {
-#define _(sym,string) string,
- foreach_ipsec_tun_protect_input_error
-#undef _
-};
-
-typedef enum
-{
-#define _(sym,str) IPSEC_TUN_PROTECT_INPUT_ERROR_##sym,
- foreach_ipsec_tun_protect_input_error
-#undef _
- IPSEC_TUN_PROTECT_INPUT_N_ERROR,
-} ipsec_tun_protect_input_error_t;
+typedef vl_counter_ipsec_tun_enum_t ipsec_tun_protect_input_error_t;
typedef enum ipsec_tun_next_t_
{
{
if (PREDICT_FALSE (0 == esp->spi))
{
- b->error = node->errors[IPSEC_TUN_PROTECT_INPUT_ERROR_SPI_0];
+ b->error = node->errors[IPSEC_TUN_ERROR_SPI_0];
b->punt_reason = ipsec_punt_reason[(ip4->protocol == IP_PROTOCOL_UDP ?
IPSEC_PUNT_IP4_SPI_UDP_0 :
IPSEC_PUNT_IP4_NO_SUCH_TUNNEL)];
}
else
{
- b->error = node->errors[IPSEC_TUN_PROTECT_INPUT_ERROR_NO_TUNNEL];
+ b->error = node->errors[IPSEC_TUN_ERROR_NO_TUNNEL];
b->punt_reason = ipsec_punt_reason[IPSEC_PUNT_IP4_NO_SUCH_TUNNEL];
}
return VNET_DEVICE_INPUT_NEXT_PUNT;
}
always_inline u16
-ipsec_ip6_if_no_tunnel (vlib_node_runtime_t * node,
- vlib_buffer_t * b, const esp_header_t * esp)
+ipsec_ip6_if_no_tunnel (vlib_node_runtime_t *node, vlib_buffer_t *b,
+ const esp_header_t *esp, const ip6_header_t *ip6)
{
- b->error = node->errors[IPSEC_TUN_PROTECT_INPUT_ERROR_NO_TUNNEL];
- b->punt_reason = ipsec_punt_reason[IPSEC_PUNT_IP6_NO_SUCH_TUNNEL];
+ if (PREDICT_FALSE (0 == esp->spi))
+ {
+ b->error = node->errors[IPSEC_TUN_ERROR_SPI_0];
+ b->punt_reason = ipsec_punt_reason[(ip6->protocol == IP_PROTOCOL_UDP ?
+ IPSEC_PUNT_IP6_SPI_UDP_0 :
+ IPSEC_PUNT_IP6_NO_SUCH_TUNNEL)];
+ }
+ else
+ {
+ b->error = node->errors[IPSEC_TUN_ERROR_NO_TUNNEL];
+ b->punt_reason = ipsec_punt_reason[IPSEC_PUNT_IP6_NO_SUCH_TUNNEL];
+ }
return VNET_DEVICE_INPUT_NEXT_PUNT;
}
while (n_left_from > 0)
{
u32 sw_if_index0, len0, hdr_sz0;
- clib_bihash_kv_24_16_t bkey60;
- clib_bihash_kv_8_16_t bkey40;
+ clib_bihash_kv_24_16_t bkey60 = { 0 };
+ clib_bihash_kv_8_16_t bkey40 = { 0 };
ipsec4_tunnel_kv_t *key40;
ipsec6_tunnel_kv_t *key60;
ip4_header_t *ip40;
if (is_ip6)
{
ip60 = (ip6_header_t *) ip40;
- esp0 = (esp_header_t *) (ip60 + 1);
- buf_rewind0 = hdr_sz0 = sizeof (ip6_header_t);
+ if (ip60->protocol == IP_PROTOCOL_UDP)
+ {
+ /* NAT UDP port 4500 case, don't advance any more */
+ esp0 = (esp_header_t *) ((u8 *) ip60 + sizeof (ip6_header_t) +
+ sizeof (udp_header_t));
+ hdr_sz0 = 0;
+ buf_rewind0 = sizeof (ip6_header_t) + sizeof (udp_header_t);
+
+ const udp_header_t *udp0 =
+ (udp_header_t *) ((u8 *) ip60 + sizeof (ip6_header_t));
+
+ /* length 9 = sizeof(udp_header) + 1 byte of special SPI */
+ if (clib_net_to_host_u16 (udp0->length) == 9 &&
+ esp0->spi_bytes[0] == 0xff)
+ {
+ b[0]->error = node->errors[IPSEC_TUN_ERROR_NAT_KEEPALIVE];
+
+ next[0] = VNET_DEVICE_INPUT_NEXT_IP6_DROP;
+ len0 = 0;
+
+ vlib_buffer_advance (b[0], -buf_rewind0);
+ goto trace00;
+ }
+ }
+ else
+ {
+ esp0 = (esp_header_t *) (ip60 + 1);
+ buf_rewind0 = hdr_sz0 = sizeof (ip6_header_t);
+ }
}
else
{
if (clib_net_to_host_u16 (udp0->length) == 9 &&
esp0->spi_bytes[0] == 0xff)
{
- b[0]->error =
- node->errors[IPSEC_TUN_PROTECT_INPUT_ERROR_NAT_KEEPALIVE];
+ b[0]->error = node->errors[IPSEC_TUN_ERROR_NAT_KEEPALIVE];
next[0] = VNET_DEVICE_INPUT_NEXT_IP4_DROP;
len0 = 0;
if (len0 < sizeof (esp_header_t))
{
- b[0]->error = node->errors[IPSEC_TUN_PROTECT_INPUT_ERROR_TOO_SHORT];
+ b[0]->error = node->errors[IPSEC_TUN_ERROR_TOO_SHORT];
next[0] = is_ip6 ? VNET_DEVICE_INPUT_NEXT_IP6_DROP :
VNET_DEVICE_INPUT_NEXT_IP4_DROP;
}
else
{
- next[0] = ipsec_ip6_if_no_tunnel (node, b[0], esp0);
+ next[0] = ipsec_ip6_if_no_tunnel (node, b[0], esp0, ip60);
+ vlib_buffer_advance (b[0], -buf_rewind0);
n_no_tunnel++;
goto trace00;
}
vlib_increment_combined_counter
(drop_counter, thread_index, sw_if_index0, 1, len0);
n_disabled++;
- b[0]->error = node->errors[IPSEC_TUN_PROTECT_INPUT_ERROR_DISABLED];
+ b[0]->error = node->errors[IPSEC_TUN_ERROR_DISABLED];
next[0] = is_ip6 ? VNET_DEVICE_INPUT_NEXT_IP6_DROP :
VNET_DEVICE_INPUT_NEXT_IP4_DROP;
goto trace00;
thread_index,
last_sw_if_index, n_packets, n_bytes);
- vlib_node_increment_counter (vm, node->node_index,
- IPSEC_TUN_PROTECT_INPUT_ERROR_RX,
- from_frame->n_vectors - (n_disabled +
- n_no_tunnel));
- vlib_node_increment_counter (vm, node->node_index,
- IPSEC_TUN_PROTECT_INPUT_ERROR_NO_TUNNEL,
+ vlib_node_increment_counter (vm, node->node_index, IPSEC_TUN_ERROR_RX,
+ from_frame->n_vectors -
+ (n_disabled + n_no_tunnel));
+ vlib_node_increment_counter (vm, node->node_index, IPSEC_TUN_ERROR_NO_TUNNEL,
n_no_tunnel);
vlib_buffer_enqueue_to_next (vm, node, from, nexts, from_frame->n_vectors);
return ipsec_tun_protect_input_inline (vm, node, from_frame, 0);
}
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ipsec4_tun_input_node) = {
.name = "ipsec4-tun-input",
.vector_size = sizeof (u32),
.format_trace = format_ipsec_tun_protect_input_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN (ipsec_tun_protect_input_error_strings),
- .error_strings = ipsec_tun_protect_input_error_strings,
+ .n_errors = IPSEC_TUN_N_ERROR,
+ .error_counters = ipsec_tun_error_counters,
.sibling_of = "device-input",
};
-/* *INDENT-ON* */
VLIB_NODE_FN (ipsec6_tun_input_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
return ipsec_tun_protect_input_inline (vm, node, from_frame, 1);
}
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ipsec6_tun_input_node) = {
.name = "ipsec6-tun-input",
.vector_size = sizeof (u32),
.format_trace = format_ipsec_tun_protect_input_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN (ipsec_tun_protect_input_error_strings),
- .error_strings = ipsec_tun_protect_input_error_strings,
+ .n_errors = IPSEC_TUN_N_ERROR,
+ .error_counters = ipsec_tun_error_counters,
.sibling_of = "device-input",
};
-/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff