diff options
| author |   Neale Ranns <nranns@cisco.com> | 2019-04-04 12:43:36 +0000 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2019-04-05 07:52:55 +0000 |
| commit | b71fa75d48b16f45618ba3fe3aa847c331f837b0 (patch) | |
| tree | 8018d3f038b069c0db6e6e32c84ada77340b31c3 /src/vnet/ipsec/ipsec_if_in.c | |
| parent | 6416e6274d0817a347d5b54bc61b4f1b617ff363 (diff) | |
IPSEC: punt reasons; SPI=0, no-tunnel
Change-Id: If76992e283a27fa193a6865257ab3aa764066e48
Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/ipsec/ipsec_if_in.c')
| -rw-r--r-- | src/vnet/ipsec/ipsec_if_in.c | 68 |
1 files changed, 55 insertions, 13 deletions
diff --git a/src/vnet/ipsec/ipsec_if_in.c b/src/vnet/ipsec/ipsec_if_in.c index 9ba2c10bca6..b585c3d4dcf 100644 --- a/src/vnet/ipsec/ipsec_if_in.c +++ b/src/vnet/ipsec/ipsec_if_in.c @@ -22,12 +22,14 @@ #include <vnet/ipsec/ipsec.h> #include <vnet/ipsec/esp.h> #include <vnet/ipsec/ipsec_io.h> +#include <vnet/ipsec/ipsec_punt.h> /* Statistics (not really errors) */ #define foreach_ipsec_if_input_error \ _(RX, "good packets received") \ _(DISABLED, "ipsec packets received on disabled interface") \ -_(NO_TUNNEL, "no matching tunnel") +_(NO_TUNNEL, "no matching tunnel") \ +_(SPI_0, "SPI 0") static char *ipsec_if_input_error_strings[] = { #define _(sym,string) string, @@ -61,6 +63,46 @@ format_ipsec_if_input_trace (u8 * s, va_list * args) return s; } +always_inline u16 +ipsec_ip4_if_no_tunnel (vlib_node_runtime_t * node, + vlib_buffer_t * b, + const esp_header_t * esp, + const ip4_header_t * ip4, u16 offset) +{ + if (PREDICT_FALSE (0 == esp->spi)) + { + b->error = node->errors[IPSEC_IF_INPUT_ERROR_SPI_0]; + b->punt_reason = + ipsec_punt_reason[(ip4->protocol == IP_PROTOCOL_UDP ? + IPSEC_PUNT_IP4_SPI_UDP_0 : IPSEC_PUNT_IP4_SPI_0)]; + } + else + { + b->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL]; + b->punt_reason = ipsec_punt_reason[IPSEC_PUNT_IP4_NO_SUCH_TUNNEL]; + } + vlib_buffer_advance (b, -offset); + return IPSEC_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, u16 offset) +{ + if (PREDICT_FALSE (0 == esp->spi)) + { + b->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL]; + b->punt_reason = ipsec_punt_reason[IPSEC_PUNT_IP6_SPI_0]; + } + else + { + b->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL]; + b->punt_reason = ipsec_punt_reason[IPSEC_PUNT_IP6_NO_SUCH_TUNNEL]; + } + vlib_buffer_advance (b, -offset); + return (IPSEC_INPUT_NEXT_PUNT); +} always_inline uword ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, @@ -197,9 +239,9 @@ ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, } else { - b[0]->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL]; + next[0] = + ipsec_ip6_if_no_tunnel (node, b[0], esp0, buf_adv0); n_no_tunnel++; - next[0] = IPSEC_INPUT_NEXT_DROP; goto pkt1; } } @@ -225,9 +267,9 @@ ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, } else { - b[0]->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL]; + next[0] = + ipsec_ip4_if_no_tunnel (node, b[0], esp0, ip40, buf_adv0); n_no_tunnel++; - next[0] = IPSEC_INPUT_NEXT_DROP; goto pkt1; } } @@ -293,9 +335,9 @@ ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, } else { - b[1]->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL]; + next[1] = + ipsec_ip6_if_no_tunnel (node, b[1], esp1, buf_adv1); n_no_tunnel++; - next[1] = IPSEC_INPUT_NEXT_DROP; goto trace1; } } @@ -321,9 +363,9 @@ ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, } else { - b[1]->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL]; + next[1] = + ipsec_ip4_if_no_tunnel (node, b[1], esp1, ip41, buf_adv1); n_no_tunnel++; - next[1] = IPSEC_INPUT_NEXT_DROP; goto trace1; } } @@ -456,9 +498,9 @@ ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, } else { - b[0]->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL]; + next[0] = + ipsec_ip6_if_no_tunnel (node, b[0], esp0, buf_adv0); n_no_tunnel++; - next[0] = IPSEC_INPUT_NEXT_DROP; goto trace00; } } @@ -484,9 +526,9 @@ ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, } else { - b[0]->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL]; + next[0] = + ipsec_ip4_if_no_tunnel (node, b[0], esp0, ip40, buf_adv0); n_no_tunnel++; - next[0] = IPSEC_INPUT_NEXT_DROP; goto trace00; } } |