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authorKlement Sekera <ksekera@cisco.com>2018-10-09 16:05:48 +0200
committerDamjan Marion <dmarion@me.com>2018-10-22 08:22:52 +0000
commitbe5a5dd904d4d25857c53a4b5dee7951f724e3e2 (patch)
treef1623d508a65daf534b8307d29eb6d5492d7cb06 /src/vnet/ipsec/esp_encrypt.c
parentb9ffffd61967ba9bc9453c93348be1ea5412c638 (diff)
ipsec: split ipsec nodes into ip4/ip6 nodes
Change-Id: Ic6b27659f1fe9e8df39e80a0441305e4e952195a Signed-off-by: Klement Sekera <ksekera@cisco.com>
Diffstat (limited to 'src/vnet/ipsec/esp_encrypt.c')
-rw-r--r--src/vnet/ipsec/esp_encrypt.c95
1 files changed, 69 insertions, 26 deletions
diff --git a/src/vnet/ipsec/esp_encrypt.c b/src/vnet/ipsec/esp_encrypt.c
index 4291e946b36..9c775ef1e47 100644
--- a/src/vnet/ipsec/esp_encrypt.c
+++ b/src/vnet/ipsec/esp_encrypt.c
@@ -60,8 +60,6 @@ static char *esp_encrypt_error_strings[] = {
#undef _
};
-vlib_node_registration_t esp_encrypt_node;
-
typedef struct
{
u32 spi;
@@ -120,9 +118,10 @@ esp_encrypt_cbc (vlib_main_t * vm, ipsec_crypto_alg_t alg,
EVP_EncryptFinal_ex (ctx, out + out_len, &out_len);
}
-static uword
-esp_encrypt_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+always_inline uword
+esp_encrypt_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame,
+ int is_ip6)
{
u32 n_left_from, *from, *to_next = 0, next_index;
from = vlib_frame_vector_args (from_frame);
@@ -138,8 +137,14 @@ esp_encrypt_node_fn (vlib_main_t * vm,
if (PREDICT_FALSE (vec_len (empty_buffers) < n_left_from))
{
- vlib_node_increment_counter (vm, esp_encrypt_node.index,
- ESP_ENCRYPT_ERROR_NO_BUFFER, n_left_from);
+ if (is_ip6)
+ vlib_node_increment_counter (vm, esp6_encrypt_node.index,
+ ESP_ENCRYPT_ERROR_NO_BUFFER,
+ n_left_from);
+ else
+ vlib_node_increment_counter (vm, esp4_encrypt_node.index,
+ ESP_ENCRYPT_ERROR_NO_BUFFER,
+ n_left_from);
clib_warning ("no enough empty buffers. discarding frame");
goto free_buffers_and_exit;
}
@@ -164,7 +169,6 @@ esp_encrypt_node_fn (vlib_main_t * vm,
uword last_empty_buffer;
esp_header_t *o_esp0;
esp_footer_t *f0;
- u8 is_ipv6;
u8 ip_udp_hdr_size;
u8 next_hdr_type;
u32 ip_proto = 0;
@@ -185,8 +189,12 @@ esp_encrypt_node_fn (vlib_main_t * vm,
{
clib_warning ("sequence number counter has cycled SPI %u",
sa0->spi);
- vlib_node_increment_counter (vm, esp_encrypt_node.index,
- ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
+ if (is_ip6)
+ vlib_node_increment_counter (vm, esp6_encrypt_node.index,
+ ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
+ else
+ vlib_node_increment_counter (vm, esp4_encrypt_node.index,
+ ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
//TODO: rekey SA
o_bi0 = i_bi0;
to_next[0] = o_bi0;
@@ -213,11 +221,8 @@ esp_encrypt_node_fn (vlib_main_t * vm,
/* add old buffer to the recycle list */
vec_add1 (recycle, i_bi0);
- /* is ipv6 */
- if (PREDICT_FALSE
- ((iuh0->ip4.ip_version_and_header_length & 0xF0) == 0x60))
+ if (is_ip6)
{
- is_ipv6 = 1;
ih6_0 = vlib_buffer_get_current (i_b0);
next_hdr_type = IP_PROTOCOL_IPV6;
oh6_0 = vlib_buffer_get_current (o_b0);
@@ -244,7 +249,6 @@ esp_encrypt_node_fn (vlib_main_t * vm,
}
else
{
- is_ipv6 = 0;
next_hdr_type = IP_PROTOCOL_IP_IN_IP;
oh0 = vlib_buffer_get_current (o_b0);
ouh0 = vlib_buffer_get_current (o_b0);
@@ -280,15 +284,14 @@ esp_encrypt_node_fn (vlib_main_t * vm,
next0 = ESP_ENCRYPT_NEXT_IP4_LOOKUP;
}
- if (PREDICT_TRUE
- (!is_ipv6 && sa0->is_tunnel && !sa0->is_tunnel_ip6))
+ if (PREDICT_TRUE (!is_ip6 && sa0->is_tunnel && !sa0->is_tunnel_ip6))
{
oh0->ip4.src_address.as_u32 = sa0->tunnel_src_addr.ip4.as_u32;
oh0->ip4.dst_address.as_u32 = sa0->tunnel_dst_addr.ip4.as_u32;
vnet_buffer (o_b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
}
- else if (is_ipv6 && sa0->is_tunnel && sa0->is_tunnel_ip6)
+ else if (is_ip6 && sa0->is_tunnel && sa0->is_tunnel_ip6)
{
oh6_0->ip6.src_address.as_u64[0] =
sa0->tunnel_src_addr.ip6.as_u64[0];
@@ -379,7 +382,7 @@ esp_encrypt_node_fn (vlib_main_t * vm,
sa0->use_esn, sa0->seq_hi);
- if (PREDICT_FALSE (is_ipv6))
+ if (is_ip6)
{
oh6_0->ip6.payload_length =
clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, o_b0) -
@@ -425,9 +428,14 @@ esp_encrypt_node_fn (vlib_main_t * vm,
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, esp_encrypt_node.index,
- ESP_ENCRYPT_ERROR_RX_PKTS,
- from_frame->n_vectors);
+ if (is_ip6)
+ vlib_node_increment_counter (vm, esp6_encrypt_node.index,
+ ESP_ENCRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+ else
+ vlib_node_increment_counter (vm, esp4_encrypt_node.index,
+ ESP_ENCRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
free_buffers_and_exit:
if (recycle)
@@ -436,11 +444,46 @@ free_buffers_and_exit:
return from_frame->n_vectors;
}
+static uword
+esp4_encrypt_node_fn (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 */ );
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (esp4_encrypt_node) = {
+ .function = esp4_encrypt_node_fn,
+ .name = "esp4-encrypt",
+ .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,
+
+ .n_next_nodes = ESP_ENCRYPT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [ESP_ENCRYPT_NEXT_##s] = n,
+ foreach_esp_encrypt_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (esp4_encrypt_node, esp4_encrypt_node_fn);
+
+static uword
+esp6_encrypt_node_fn (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 */ );
+}
/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (esp_encrypt_node) = {
- .function = esp_encrypt_node_fn,
- .name = "esp-encrypt",
+VLIB_REGISTER_NODE (esp6_encrypt_node) = {
+ .function = esp6_encrypt_node_fn,
+ .name = "esp6-encrypt",
.vector_size = sizeof (u32),
.format_trace = format_esp_encrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
@@ -457,7 +500,7 @@ VLIB_REGISTER_NODE (esp_encrypt_node) = {
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (esp_encrypt_node, esp_encrypt_node_fn)
+VLIB_NODE_FUNCTION_MULTIARCH (esp6_encrypt_node, esp6_encrypt_node_fn);
/*
* fd.io coding-style-patch-verification: ON
*