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authorNeale Ranns <nranns@cisco.com>2019-03-22 08:12:48 +0000
committerDamjan Marion <dmarion@me.com>2019-03-28 08:16:37 +0000
commit25edf14369b27ab3dfcda14b69dc53148c9ccf7e (patch)
tree38de7ee1fe1d6f8c846153b50c2d6330c1615e85 /src/vnet/ipsec/esp_encrypt.c
parent8feeaff56fa9a4fbdfc06131f28a1060ffd9645d (diff)
IPSEC: run encrpyt as a feautre on the tunnel
Change-Id: I6527e3fd8bbbca2d5f728621fc66b3856b39d505 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/ipsec/esp_encrypt.c')
-rw-r--r--src/vnet/ipsec/esp_encrypt.c81
1 files changed, 75 insertions, 6 deletions
diff --git a/src/vnet/ipsec/esp_encrypt.c b/src/vnet/ipsec/esp_encrypt.c
index 6e5007151b9..ebcf0ed8e08 100644
--- a/src/vnet/ipsec/esp_encrypt.c
+++ b/src/vnet/ipsec/esp_encrypt.c
@@ -220,7 +220,7 @@ esp_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
always_inline uword
esp_encrypt_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * frame, int is_ip6)
+ vlib_frame_t * frame, int is_ip6, int is_tun)
{
ipsec_main_t *im = &ipsec_main;
ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, vm->thread_index);
@@ -258,7 +258,19 @@ esp_encrypt_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD);
}
- if (vnet_buffer (b[0])->ipsec.sad_index != current_sa_index)
+ if (is_tun)
+ {
+ /* we are on a ipsec tunnel's feature arc */
+ u32 next0;
+ sa_index0 = *(u32 *) vnet_feature_next_with_data (&next0, b[0],
+ sizeof
+ (sa_index0));
+ next[0] = next0;
+ }
+ else
+ sa_index0 = vnet_buffer (b[0])->ipsec.sad_index;
+
+ if (sa_index0 != current_sa_index)
{
sa0 = pool_elt_at_index (im->sad, sa_index0);
current_sa_index = sa_index0;
@@ -335,8 +347,11 @@ esp_encrypt_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
}
dpo = sa0->dpo + IPSEC_PROTOCOL_ESP;
- next[0] = dpo->dpoi_next_node;
- vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
+ if (!is_tun)
+ {
+ next[0] = dpo->dpoi_next_node;
+ vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
+ }
}
else /* transport mode */
{
@@ -483,7 +498,7 @@ VLIB_NODE_FN (esp4_encrypt_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
- return esp_encrypt_inline (vm, node, from_frame, 0 /* is_ip6 */ );
+ return esp_encrypt_inline (vm, node, from_frame, 0 /* is_ip6 */ , 0);
}
/* *INDENT-OFF* */
@@ -509,7 +524,7 @@ VLIB_NODE_FN (esp6_encrypt_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
- return esp_encrypt_inline (vm, node, from_frame, 1 /* is_ip6 */ );
+ return esp_encrypt_inline (vm, node, from_frame, 1 /* is_ip6 */ , 0);
}
/* *INDENT-OFF* */
@@ -531,6 +546,60 @@ VLIB_REGISTER_NODE (esp6_encrypt_node) = {
};
/* *INDENT-ON* */
+VLIB_NODE_FN (esp4_encrypt_tun_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return esp_encrypt_inline (vm, node, from_frame, 0 /* is_ip6 */ , 1);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (esp4_encrypt_tun_node) = {
+ .name = "esp4-encrypt-tun",
+ .vector_size = sizeof (u32),
+ .format_trace = format_esp_encrypt_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
+ .error_strings = esp_encrypt_error_strings,
+};
+
+VNET_FEATURE_INIT (esp4_encrypt_tun_feat_node, static) =
+{
+ .arc_name = "ip4-output",
+ .node_name = "esp4-encrypt-tun",
+ .runs_before = VNET_FEATURES ("ip4-frag",
+ "adj-midchain-tx"),
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FN (esp6_encrypt_tun_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return esp_encrypt_inline (vm, node, from_frame, 1 /* is_ip6 */ , 1);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (esp6_encrypt_tun_node) = {
+ .name = "esp6-encrypt-tun",
+ .vector_size = sizeof (u32),
+ .format_trace = format_esp_encrypt_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
+ .error_strings = esp_encrypt_error_strings,
+};
+
+VNET_FEATURE_INIT (esp6_encrypt_tun_feat_node, static) =
+{
+ .arc_name = "ip6-output",
+ .node_name = "esp6-encrypt-tun",
+ .runs_before = VNET_FEATURES ("ip6-frag",
+ "adj-midchain-tx"),
+};
+/* *INDENT-ON* */
+
/*
* fd.io coding-style-patch-verification: ON
*