#include <vnet/vnet.h>
#include <vnet/api_errno.h>
#include <vnet/ip/ip.h>
+#include <vnet/udp/udp.h>
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/esp.h>
#undef _
};
-vlib_node_registration_t esp_encrypt_node;
-
typedef struct
{
u32 spi;
u32 seq;
+ u8 udp_encap;
ipsec_crypto_alg_t crypto_alg;
ipsec_integ_alg_t integ_alg;
} esp_encrypt_trace_t;
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *);
- s = format (s, "esp: spi %u seq %u crypto %U integrity %U",
+ s = format (s, "esp: spi %u seq %u crypto %U integrity %U%s",
t->spi, t->seq,
format_ipsec_crypto_alg, t->crypto_alg,
- format_ipsec_integ_alg, t->integ_alg);
+ format_ipsec_integ_alg, t->integ_alg,
+ t->udp_encap ? " udp-encap-enabled" : "");
return s;
}
always_inline void
-esp_encrypt_cbc (ipsec_crypto_alg_t alg,
+esp_encrypt_cbc (vlib_main_t * vm, ipsec_crypto_alg_t alg,
u8 * in, u8 * out, size_t in_len, u8 * key, u8 * iv)
{
ipsec_proto_main_t *em = &ipsec_proto_main;
- u32 thread_index = vlib_get_thread_index ();
+ u32 thread_index = vm->thread_index;
#if OPENSSL_VERSION_NUMBER >= 0x10100000L
EVP_CIPHER_CTX *ctx = em->per_thread_data[thread_index].encrypt_ctx;
#else
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);
ipsec_main_t *im = &ipsec_main;
ipsec_proto_main_t *em = &ipsec_proto_main;
u32 *recycle = 0;
- u32 thread_index = vlib_get_thread_index ();
+ u32 thread_index = vm->thread_index;
ipsec_alloc_empty_buffers (vm, im);
if (PREDICT_FALSE (vec_len (empty_buffers) < n_left_from))
{
- vlib_node_increment_counter (vm, esp_encrypt_node.index,
+ vlib_node_increment_counter (vm, node->node_index,
ESP_ENCRYPT_ERROR_NO_BUFFER, n_left_from);
- clib_warning ("no enough empty buffers. discarding frame");
+ clib_warning ("not enough empty buffers. discarding frame");
goto free_buffers_and_exit;
}
vlib_buffer_t *i_b0, *o_b0 = 0;
u32 sa_index0;
ipsec_sa_t *sa0;
- ip4_and_esp_header_t *ih0, *oh0 = 0;
+ ip4_and_esp_header_t *oh0 = 0;
ip6_and_esp_header_t *ih6_0, *oh6_0 = 0;
+ ip4_and_udp_and_esp_header_t *iuh0, *ouh0 = 0;
uword last_empty_buffer;
esp_header_t *o_esp0;
esp_footer_t *f0;
- u8 is_ipv6;
- u8 ip_hdr_size;
+ u8 ip_udp_hdr_size;
u8 next_hdr_type;
u32 ip_proto = 0;
u8 transport_mode = 0;
{
clib_warning ("sequence number counter has cycled SPI %u",
sa0->spi);
- vlib_node_increment_counter (vm, esp_encrypt_node.index,
+ vlib_node_increment_counter (vm, node->node_index,
ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
//TODO: rekey SA
o_bi0 = i_bi0;
o_b0 = vlib_get_buffer (vm, o_bi0);
o_b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
o_b0->current_data = sizeof (ethernet_header_t);
- ih0 = vlib_buffer_get_current (i_b0);
+ iuh0 = vlib_buffer_get_current (i_b0);
vlib_prefetch_buffer_with_index (vm,
empty_buffers[last_empty_buffer -
1], STORE);
/* add old buffer to the recycle list */
vec_add1 (recycle, i_bi0);
- /* is ipv6 */
- if (PREDICT_FALSE
- ((ih0->ip4.ip_version_and_header_length & 0xF0) == 0x60))
+ if (is_ip6)
{
- is_ipv6 = 1;
ih6_0 = vlib_buffer_get_current (i_b0);
- ip_hdr_size = sizeof (ip6_header_t);
next_hdr_type = IP_PROTOCOL_IPV6;
oh6_0 = vlib_buffer_get_current (o_b0);
- o_esp0 = vlib_buffer_get_current (o_b0) + sizeof (ip6_header_t);
oh6_0->ip6.ip_version_traffic_class_and_flow_label =
ih6_0->ip6.ip_version_traffic_class_and_flow_label;
oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
+ ip_udp_hdr_size = sizeof (ip6_header_t);
+ o_esp0 = vlib_buffer_get_current (o_b0) + ip_udp_hdr_size;
oh6_0->ip6.hop_limit = 254;
oh6_0->ip6.src_address.as_u64[0] =
ih6_0->ip6.src_address.as_u64[0];
ih6_0->ip6.dst_address.as_u64[0];
oh6_0->ip6.dst_address.as_u64[1] =
ih6_0->ip6.dst_address.as_u64[1];
- oh6_0->esp.spi = clib_net_to_host_u32 (sa0->spi);
- oh6_0->esp.seq = clib_net_to_host_u32 (sa0->seq);
+ o_esp0->spi = clib_net_to_host_u32 (sa0->spi);
+ o_esp0->seq = clib_net_to_host_u32 (sa0->seq);
ip_proto = ih6_0->ip6.protocol;
next0 = ESP_ENCRYPT_NEXT_IP6_LOOKUP;
}
else
{
- is_ipv6 = 0;
- ip_hdr_size = sizeof (ip4_header_t);
next_hdr_type = IP_PROTOCOL_IP_IN_IP;
oh0 = vlib_buffer_get_current (o_b0);
- o_esp0 = vlib_buffer_get_current (o_b0) + sizeof (ip4_header_t);
+ ouh0 = vlib_buffer_get_current (o_b0);
oh0->ip4.ip_version_and_header_length = 0x45;
- oh0->ip4.tos = ih0->ip4.tos;
+ oh0->ip4.tos = iuh0->ip4.tos;
oh0->ip4.fragment_id = 0;
oh0->ip4.flags_and_fragment_offset = 0;
oh0->ip4.ttl = 254;
- oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
- oh0->ip4.src_address.as_u32 = ih0->ip4.src_address.as_u32;
- oh0->ip4.dst_address.as_u32 = ih0->ip4.dst_address.as_u32;
- oh0->esp.spi = clib_net_to_host_u32 (sa0->spi);
- oh0->esp.seq = clib_net_to_host_u32 (sa0->seq);
- ip_proto = ih0->ip4.protocol;
+ if (sa0->udp_encap)
+ {
+ ouh0->udp.src_port =
+ clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
+ ouh0->udp.dst_port =
+ clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
+ ouh0->udp.checksum = 0;
+ ouh0->ip4.protocol = IP_PROTOCOL_UDP;
+ ip_udp_hdr_size =
+ sizeof (udp_header_t) + sizeof (ip4_header_t);
+ }
+ else
+ {
+ oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
+ ip_udp_hdr_size = sizeof (ip4_header_t);
+ }
+ o_esp0 = vlib_buffer_get_current (o_b0) + ip_udp_hdr_size;
+ oh0->ip4.src_address.as_u32 = iuh0->ip4.src_address.as_u32;
+ oh0->ip4.dst_address.as_u32 = iuh0->ip4.dst_address.as_u32;
+ o_esp0->spi = clib_net_to_host_u32 (sa0->spi);
+ o_esp0->seq = clib_net_to_host_u32 (sa0->seq);
+ ip_proto = iuh0->ip4.protocol;
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;
+ vnet_buffer (o_b0)->sw_if_index[VLIB_TX] = sa0->tx_fib_index;
}
- 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];
oh6_0->ip6.dst_address.as_u64[1] =
sa0->tunnel_dst_addr.ip6.as_u64[1];
- vnet_buffer (o_b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ vnet_buffer (o_b0)->sw_if_index[VLIB_TX] = sa0->tx_fib_index;
}
else
{
vlib_buffer_get_current (i_b0) -
sizeof (ethernet_header_t));
oeh0 = (ethernet_header_t *) o_b0->data;
- clib_memcpy (oeh0, ieh0, sizeof (ethernet_header_t));
+ clib_memcpy_fast (oeh0, ieh0, sizeof (ethernet_header_t));
next0 = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
vnet_buffer (o_b0)->sw_if_index[VLIB_TX] =
vnet_buffer (i_b0)->sw_if_index[VLIB_TX];
}
- vlib_buffer_advance (i_b0, ip_hdr_size);
+
+ if (is_ip6)
+ {
+ vlib_buffer_advance (i_b0, sizeof (ip6_header_t));
+ }
+ else
+ {
+ vlib_buffer_advance (i_b0, sizeof (ip4_header_t));
+ }
}
ASSERT (sa0->crypto_alg < IPSEC_CRYPTO_N_ALG);
f0->pad_length = pad_bytes;
f0->next_header = next_hdr_type;
- o_b0->current_length = ip_hdr_size + sizeof (esp_header_t) +
+ o_b0->current_length = ip_udp_hdr_size + sizeof (esp_header_t) +
BLOCK_SIZE * blocks + IV_SIZE;
vnet_buffer (o_b0)->sw_if_index[VLIB_RX] =
ipsec_proto_main_crypto_algs[sa0->crypto_alg].iv_size];
RAND_bytes (iv, sizeof (iv));
- clib_memcpy ((u8 *) vlib_buffer_get_current (o_b0) +
- ip_hdr_size + sizeof (esp_header_t), iv,
- em->ipsec_proto_main_crypto_algs[sa0->
- crypto_alg].iv_size);
+ clib_memcpy_fast ((u8 *) vlib_buffer_get_current (o_b0) +
+ ip_udp_hdr_size + sizeof (esp_header_t), iv,
+ em->ipsec_proto_main_crypto_algs[sa0->
+ crypto_alg].iv_size);
- esp_encrypt_cbc (sa0->crypto_alg,
+ esp_encrypt_cbc (vm, sa0->crypto_alg,
(u8 *) vlib_buffer_get_current (i_b0),
(u8 *) vlib_buffer_get_current (o_b0) +
- ip_hdr_size + sizeof (esp_header_t) +
+ ip_udp_hdr_size + sizeof (esp_header_t) +
IV_SIZE, BLOCK_SIZE * blocks,
sa0->crypto_key, iv);
}
sa0->integ_key_len,
(u8 *) o_esp0,
o_b0->current_length -
- ip_hdr_size,
+ ip_udp_hdr_size,
vlib_buffer_get_current (o_b0) +
o_b0->current_length,
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) -
oh0->ip4.length =
clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, o_b0));
oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4);
+ if (sa0->udp_encap)
+ {
+ ouh0->udp.length =
+ clib_host_to_net_u16 (clib_net_to_host_u16
+ (oh0->ip4.length) -
+ ip4_header_bytes (&oh0->ip4));
+ }
}
if (transport_mode)
vlib_add_trace (vm, node, o_b0, sizeof (*tr));
tr->spi = sa0->spi;
tr->seq = sa0->seq - 1;
+ tr->udp_encap = sa0->udp_encap;
tr->crypto_alg = sa0->crypto_alg;
tr->integ_alg = sa0->integ_alg;
}
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, esp_encrypt_node.index,
+ vlib_node_increment_counter (vm, node->node_index,
ESP_ENCRYPT_ERROR_RX_PKTS,
from_frame->n_vectors);
return from_frame->n_vectors;
}
+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 */ );
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (esp4_encrypt_node) = {
+ .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_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 */ );
+}
/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (esp_encrypt_node) = {
- .function = esp_encrypt_node_fn,
- .name = "esp-encrypt",
+VLIB_REGISTER_NODE (esp6_encrypt_node) = {
+ .name = "esp6-encrypt",
.vector_size = sizeof (u32),
.format_trace = format_esp_encrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
};
/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (esp_encrypt_node, esp_encrypt_node_fn)
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff