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authorNeale Ranns <nranns@cisco.com>2019-04-23 20:57:55 -0400
committerDamjan Marion <dmarion@me.com>2019-04-25 08:32:56 +0000
commite8915fc707a03260c05624425f9548d796c089fb (patch)
treef1bc7dc86d2a6fb6d25afa8510d57d5cda689be6 /src/vnet/ipsec/ipsec.c
parenta829b13986d556ab3aeb52668129fe4b13a1f24f (diff)
IPSEC; dpdk backend for tunnel interface encryption
Change-Id: Ide2a9df18db371c8428855d7f12f246006d7c04c Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/ipsec/ipsec.c')
-rw-r--r--src/vnet/ipsec/ipsec.c66
1 files changed, 49 insertions, 17 deletions
diff --git a/src/vnet/ipsec/ipsec.c b/src/vnet/ipsec/ipsec.c
index c530a44e870..da1a3fe8727 100644
--- a/src/vnet/ipsec/ipsec.c
+++ b/src/vnet/ipsec/ipsec.c
@@ -100,6 +100,16 @@ ipsec_add_node (vlib_main_t * vm, const char *node_name,
*out_next_index = vlib_node_add_next (vm, prev_node->index, node->index);
}
+static void
+ipsec_add_feature (const char *arc_name,
+ const char *node_name, u32 * out_feature_index)
+{
+ u8 arc;
+
+ arc = vnet_get_feature_arc_index (arc_name);
+ *out_feature_index = vnet_get_feature_index (arc, node_name);
+}
+
u32
ipsec_register_ah_backend (vlib_main_t * vm, ipsec_main_t * im,
const char *name,
@@ -132,13 +142,16 @@ u32
ipsec_register_esp_backend (vlib_main_t * vm, ipsec_main_t * im,
const char *name,
const char *esp4_encrypt_node_name,
+ const char *esp4_encrypt_node_tun_name,
const char *esp4_decrypt_node_name,
const char *esp6_encrypt_node_name,
+ const char *esp6_encrypt_node_tun_name,
const char *esp6_decrypt_node_name,
check_support_cb_t esp_check_support_cb,
add_del_sa_sess_cb_t esp_add_del_sa_sess_cb)
{
ipsec_esp_backend_t *b;
+
pool_get (im->esp_backends, b);
b->name = format (0, "%s%c", name, 0);
@@ -151,27 +164,42 @@ ipsec_register_esp_backend (vlib_main_t * vm, ipsec_main_t * im,
ipsec_add_node (vm, esp6_decrypt_node_name, "ipsec6-input-feature",
&b->esp6_decrypt_node_index, &b->esp6_decrypt_next_index);
+ ipsec_add_feature ("ip4-output", esp4_encrypt_node_tun_name,
+ &b->esp4_encrypt_tun_feature_index);
+ ipsec_add_feature ("ip6-output", esp6_encrypt_node_tun_name,
+ &b->esp6_encrypt_tun_feature_index);
+
b->check_support_cb = esp_check_support_cb;
b->add_del_sa_sess_cb = esp_add_del_sa_sess_cb;
return b - im->esp_backends;
}
-static walk_rc_t
-ipsec_sa_restack (ipsec_sa_t * sa, void *ctx)
+clib_error_t *
+ipsec_rsc_in_use (ipsec_main_t * im)
{
- ipsec_sa_stack (sa);
-
- return (WALK_CONTINUE);
+ /* return an error is crypto resource are in use */
+ if (pool_elts (im->sad) > 0)
+ return clib_error_return (0,
+ "%d SA entries configured",
+ pool_elts (im->sad));
+
+ if (pool_elts (im->tunnel_interfaces))
+ return clib_error_return (0,
+ "%d tunnel-interface entries configured",
+ pool_elts (im->tunnel_interfaces));
+
+ return (NULL);
}
int
ipsec_select_ah_backend (ipsec_main_t * im, u32 backend_idx)
{
- if (pool_elts (im->sad) > 0
- || pool_is_free_index (im->ah_backends, backend_idx))
- {
- return -1;
- }
+ if (ipsec_rsc_in_use (im))
+ return VNET_API_ERROR_RSRC_IN_USE;
+
+ if (pool_is_free_index (im->ah_backends, backend_idx))
+ return VNET_API_ERROR_INVALID_VALUE;
+
ipsec_ah_backend_t *b = pool_elt_at_index (im->ah_backends, backend_idx);
im->ah_current_backend = backend_idx;
im->ah4_encrypt_node_index = b->ah4_encrypt_node_index;
@@ -183,18 +211,18 @@ ipsec_select_ah_backend (ipsec_main_t * im, u32 backend_idx)
im->ah6_encrypt_next_index = b->ah6_encrypt_next_index;
im->ah6_decrypt_next_index = b->ah6_decrypt_next_index;
- ipsec_sa_walk (ipsec_sa_restack, NULL);
return 0;
}
int
ipsec_select_esp_backend (ipsec_main_t * im, u32 backend_idx)
{
- if (pool_elts (im->sad) > 0
- || pool_is_free_index (im->esp_backends, backend_idx))
- {
- return -1;
- }
+ if (ipsec_rsc_in_use (im))
+ return VNET_API_ERROR_RSRC_IN_USE;
+
+ if (pool_is_free_index (im->esp_backends, backend_idx))
+ return VNET_API_ERROR_INVALID_VALUE;
+
ipsec_esp_backend_t *b = pool_elt_at_index (im->esp_backends, backend_idx);
im->esp_current_backend = backend_idx;
im->esp4_encrypt_node_index = b->esp4_encrypt_node_index;
@@ -206,7 +234,9 @@ ipsec_select_esp_backend (ipsec_main_t * im, u32 backend_idx)
im->esp6_encrypt_next_index = b->esp6_encrypt_next_index;
im->esp6_decrypt_next_index = b->esp6_decrypt_next_index;
- ipsec_sa_walk (ipsec_sa_restack, NULL);
+ im->esp4_encrypt_tun_feature_index = b->esp4_encrypt_tun_feature_index;
+ im->esp6_encrypt_tun_feature_index = b->esp6_encrypt_tun_feature_index;
+
return 0;
}
@@ -243,8 +273,10 @@ ipsec_init (vlib_main_t * vm)
idx = ipsec_register_esp_backend (vm, im, "default openssl backend",
"esp4-encrypt",
+ "esp4-encrypt-tun",
"esp4-decrypt",
"esp6-encrypt",
+ "esp6-encrypt-tun",
"esp6-decrypt",
ipsec_check_esp_support, NULL);
im->esp_default_backend = idx;