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path: root/src/vnet/ipsec/esp_decrypt.c
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Diffstat (limited to 'src/vnet/ipsec/esp_decrypt.c')
-rw-r--r--src/vnet/ipsec/esp_decrypt.c148
1 files changed, 98 insertions, 50 deletions
diff --git a/src/vnet/ipsec/esp_decrypt.c b/src/vnet/ipsec/esp_decrypt.c
index a0eeed464da..bfddb9ece8d 100644
--- a/src/vnet/ipsec/esp_decrypt.c
+++ b/src/vnet/ipsec/esp_decrypt.c
@@ -112,9 +112,10 @@ esp_decrypt_cbc (ipsec_crypto_alg_t alg,
EVP_DecryptFinal_ex (ctx, out + out_len, &out_len);
}
-static uword
-esp_decrypt_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+always_inline uword
+esp_decrypt_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame,
+ int is_ip6)
{
u32 n_left_from, *from, next_index, *to_next;
ipsec_main_t *im = &ipsec_main;
@@ -130,8 +131,14 @@ esp_decrypt_node_fn (vlib_main_t * vm,
if (PREDICT_FALSE (vec_len (empty_buffers) < n_left_from))
{
- vlib_node_increment_counter (vm, esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_NO_BUFFER, n_left_from);
+ if (is_ip6)
+ vlib_node_increment_counter (vm, esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_NO_BUFFER,
+ n_left_from);
+ else
+ vlib_node_increment_counter (vm, esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_NO_BUFFER,
+ n_left_from);
goto free_buffers_and_exit;
}
@@ -155,8 +162,6 @@ esp_decrypt_node_fn (vlib_main_t * vm,
ip4_header_t *ih4 = 0, *oh4 = 0;
ip6_header_t *ih6 = 0, *oh6 = 0;
u8 tunnel_mode = 1;
- u8 transport_ip6 = 0;
-
i_bi0 = from[0];
from += 1;
@@ -186,8 +191,14 @@ esp_decrypt_node_fn (vlib_main_t * vm,
if (PREDICT_FALSE (rv))
{
clib_warning ("anti-replay SPI %u seq %u", sa0->spi, seq);
- vlib_node_increment_counter (vm, esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_REPLAY, 1);
+ if (is_ip6)
+ vlib_node_increment_counter (vm,
+ esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_REPLAY, 1);
+ else
+ vlib_node_increment_counter (vm,
+ esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_REPLAY, 1);
o_bi0 = i_bi0;
to_next[0] = o_bi0;
to_next += 1;
@@ -214,9 +225,16 @@ esp_decrypt_node_fn (vlib_main_t * vm,
if (PREDICT_FALSE (memcmp (icv, sig, icv_size)))
{
- vlib_node_increment_counter (vm, esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_INTEG_ERROR,
- 1);
+ if (is_ip6)
+ vlib_node_increment_counter (vm,
+ esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_INTEG_ERROR,
+ 1);
+ else
+ vlib_node_increment_counter (vm,
+ esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_INTEG_ERROR,
+ 1);
o_bi0 = i_bi0;
to_next[0] = o_bi0;
to_next += 1;
@@ -269,37 +287,19 @@ esp_decrypt_node_fn (vlib_main_t * vm,
{
tunnel_mode = 0;
- if (i_b0->flags & VNET_BUFFER_F_IS_IP4)
- ih4 =
- (ip4_header_t *) ((u8 *) esp0 - sizeof (ip4_header_t));
- else
- ih4 =
- (ip4_header_t *) ((u8 *) esp0 - sizeof (ip6_header_t));
-
- if (PREDICT_TRUE
- ((ih4->ip_version_and_header_length & 0xF0) != 0x40))
+ if (is_ip6)
{
- if (PREDICT_TRUE
- ((ih4->ip_version_and_header_length & 0xF0) ==
- 0x60))
- {
- transport_ip6 = 1;
- ip_hdr_size = sizeof (ip6_header_t);
- ih6 = (ip6_header_t *) ih4;
- oh6 = vlib_buffer_get_current (o_b0);
- }
- else
- {
- vlib_node_increment_counter (vm,
- esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_NOT_IP,
- 1);
- o_b0 = 0;
- goto trace;
- }
+ ih6 =
+ (ip6_header_t *) ((u8 *) esp0 -
+ sizeof (ip6_header_t));
+ ip_hdr_size = sizeof (ip6_header_t);
+ oh6 = vlib_buffer_get_current (o_b0);
}
else
{
+ ih4 =
+ (ip4_header_t *) ((u8 *) esp0 -
+ sizeof (ip4_header_t));
oh4 = vlib_buffer_get_current (o_b0);
ip_hdr_size = sizeof (ip4_header_t);
}
@@ -331,9 +331,16 @@ esp_decrypt_node_fn (vlib_main_t * vm,
else
{
clib_warning ("next header: 0x%x", f0->next_header);
- vlib_node_increment_counter (vm, esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
- 1);
+ if (is_ip6)
+ vlib_node_increment_counter (vm,
+ esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ else
+ vlib_node_increment_counter (vm,
+ esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
o_b0 = 0;
goto trace;
}
@@ -341,7 +348,7 @@ esp_decrypt_node_fn (vlib_main_t * vm,
/* transport mode */
else
{
- if (PREDICT_FALSE (transport_ip6))
+ if (is_ip6)
{
next0 = ESP_DECRYPT_NEXT_IP6_INPUT;
oh6->ip_version_traffic_class_and_flow_label =
@@ -405,9 +412,15 @@ esp_decrypt_node_fn (vlib_main_t * vm,
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_RX_PKTS,
- from_frame->n_vectors);
+ if (is_ip6)
+ vlib_node_increment_counter (vm, esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+ else
+ vlib_node_increment_counter (vm, esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+
free_buffers_and_exit:
if (recycle)
@@ -416,11 +429,46 @@ free_buffers_and_exit:
return from_frame->n_vectors;
}
+static uword
+esp4_decrypt_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ return esp_decrypt_inline (vm, node, from_frame, 0 /* is_ip6 */ );
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (esp4_decrypt_node) = {
+ .function = esp4_decrypt_node_fn,
+ .name = "esp4-decrypt",
+ .vector_size = sizeof (u32),
+ .format_trace = format_esp_decrypt_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
+ .error_strings = esp_decrypt_error_strings,
+
+ .n_next_nodes = ESP_DECRYPT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [ESP_DECRYPT_NEXT_##s] = n,
+ foreach_esp_decrypt_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (esp4_decrypt_node, esp4_decrypt_node_fn);
+
+static uword
+esp6_decrypt_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ return esp_decrypt_inline (vm, node, from_frame, 1 /* is_ip6 */ );
+}
/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (esp_decrypt_node) = {
- .function = esp_decrypt_node_fn,
- .name = "esp-decrypt",
+VLIB_REGISTER_NODE (esp6_decrypt_node) = {
+ .function = esp6_decrypt_node_fn,
+ .name = "esp6-decrypt",
.vector_size = sizeof (u32),
.format_trace = format_esp_decrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
@@ -437,7 +485,7 @@ VLIB_REGISTER_NODE (esp_decrypt_node) = {
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (esp_decrypt_node, esp_decrypt_node_fn)
+VLIB_NODE_FUNCTION_MULTIARCH (esp6_decrypt_node, esp6_decrypt_node_fn);
/*
* fd.io coding-style-patch-verification: ON
*