#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>
+ipsec_proto_main_t ipsec_proto_main;
#define foreach_esp_encrypt_next \
_(DROP, "error-drop") \
{
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_aes_cbc (ipsec_crypto_alg_t alg,
- u8 * in, u8 * out, size_t in_len, u8 * key, u8 * iv)
+esp_encrypt_cbc (vlib_main_t * vm, ipsec_crypto_alg_t alg,
+ u8 * in, u8 * out, size_t in_len, u8 * key, u8 * iv)
{
- esp_main_t *em = &esp_main;
- u32 cpu_index = os_get_cpu_number ();
- EVP_CIPHER_CTX *ctx = &(em->per_thread_data[cpu_index].encrypt_ctx);
+ ipsec_proto_main_t *em = &ipsec_proto_main;
+ 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_CIPHER_CTX *ctx = &(em->per_thread_data[thread_index].encrypt_ctx);
+#endif
const EVP_CIPHER *cipher = NULL;
int out_len;
ASSERT (alg < IPSEC_CRYPTO_N_ALG);
- if (PREDICT_FALSE (em->esp_crypto_algs[alg].type == IPSEC_CRYPTO_ALG_NONE))
+ if (PREDICT_FALSE
+ (em->ipsec_proto_main_crypto_algs[alg].type == IPSEC_CRYPTO_ALG_NONE))
return;
- if (PREDICT_FALSE (alg != em->per_thread_data[cpu_index].last_encrypt_alg))
+ if (PREDICT_FALSE
+ (alg != em->per_thread_data[thread_index].last_encrypt_alg))
{
- cipher = em->esp_crypto_algs[alg].type;
- em->per_thread_data[cpu_index].last_encrypt_alg = alg;
+ cipher = em->ipsec_proto_main_crypto_algs[alg].type;
+ em->per_thread_data[thread_index].last_encrypt_alg = alg;
}
EVP_EncryptInit_ex (ctx, cipher, NULL, key, iv);
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
ipsec_main_t *im = &ipsec_main;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
u32 *recycle = 0;
- u32 cpu_index = os_get_cpu_number ();
+ u32 thread_index = vm->thread_index;
ipsec_alloc_empty_buffers (vm, im);
- u32 *empty_buffers = im->empty_buffers[cpu_index];
+ u32 *empty_buffers = im->empty_buffers[thread_index];
if (PREDICT_FALSE (vec_len (empty_buffers) < n_left_from))
{
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;
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);
/* is ipv6 */
if (PREDICT_FALSE
- ((ih0->ip4.ip_version_and_header_length & 0xF0) == 0x60))
+ ((iuh0->ip4.ip_version_and_header_length & 0xF0) == 0x60))
{
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;
}
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);
+ vlib_buffer_advance (i_b0, ip_udp_hdr_size);
}
ASSERT (sa0->crypto_alg < IPSEC_CRYPTO_N_ALG);
if (PREDICT_TRUE (sa0->crypto_alg != IPSEC_CRYPTO_ALG_NONE))
{
- const int BLOCK_SIZE = 16;
- const int IV_SIZE = 16;
+ const int BLOCK_SIZE =
+ em->ipsec_proto_main_crypto_algs[sa0->crypto_alg].block_size;
+ const int IV_SIZE =
+ em->ipsec_proto_main_crypto_algs[sa0->crypto_alg].iv_size;
int blocks = 1 + (i_b0->current_length + 1) / BLOCK_SIZE;
/* pad packet in input buffer */
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] =
vnet_buffer (i_b0)->sw_if_index[VLIB_RX];
- u8 iv[16];
+ u8 iv[em->
+ 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, 16);
-
- esp_encrypt_aes_cbc (sa0->crypto_alg,
- (u8 *) vlib_buffer_get_current (i_b0),
- (u8 *) vlib_buffer_get_current (o_b0) +
- ip_hdr_size + sizeof (esp_header_t) +
- IV_SIZE, BLOCK_SIZE * blocks,
- sa0->crypto_key, iv);
+ ip_udp_hdr_size + sizeof (esp_header_t), iv,
+ em->ipsec_proto_main_crypto_algs[sa0->
+ crypto_alg].iv_size);
+
+ esp_encrypt_cbc (vm, sa0->crypto_alg,
+ (u8 *) vlib_buffer_get_current (i_b0),
+ (u8 *) vlib_buffer_get_current (o_b0) +
+ ip_udp_hdr_size + sizeof (esp_header_t) +
+ IV_SIZE, BLOCK_SIZE * blocks,
+ sa0->crypto_key, iv);
}
o_b0->current_length += hmac_calc (sa0->integ_alg, sa0->integ_key,
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);
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;
}
Code Review / vpp.git / blobdiff