blob: 0d29604e61ff497c8223a439d89443b34c17161e [file] [log] [blame]
/*
* esp_encrypt.c : IPSec ESP encrypt node
*
* Copyright (c) 2015 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <vnet/vnet.h>
#include <vnet/api_errno.h>
#include <vnet/ip/ip.h>
#include <vnet/crypto/crypto.h>
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/ipsec_tun.h>
#include <vnet/ipsec/esp.h>
#include <vnet/tunnel/tunnel_dp.h>
#define foreach_esp_encrypt_next \
_ (DROP4, "ip4-drop") \
_ (DROP6, "ip6-drop") \
_ (DROP_MPLS, "mpls-drop") \
_ (HANDOFF4, "handoff4") \
_ (HANDOFF6, "handoff6") \
_ (HANDOFF_MPLS, "handoff-mpls") \
_ (INTERFACE_OUTPUT, "interface-output")
#define _(v, s) ESP_ENCRYPT_NEXT_##v,
typedef enum
{
foreach_esp_encrypt_next
#undef _
ESP_ENCRYPT_N_NEXT,
} esp_encrypt_next_t;
#define foreach_esp_encrypt_error \
_ (RX_PKTS, "ESP pkts received") \
_ (POST_RX_PKTS, "ESP-post pkts received") \
_ (HANDOFF, "Hand-off") \
_ (SEQ_CYCLED, "sequence number cycled (packet dropped)") \
_ (CRYPTO_ENGINE_ERROR, "crypto engine error (packet dropped)") \
_ (CRYPTO_QUEUE_FULL, "crypto queue full (packet dropped)") \
_ (NO_BUFFERS, "no buffers (packet dropped)") \
_ (NO_PROTECTION, "no protecting SA (packet dropped)") \
_ (NO_ENCRYPTION, "no Encrypting SA (packet dropped)")
typedef enum
{
#define _(sym,str) ESP_ENCRYPT_ERROR_##sym,
foreach_esp_encrypt_error
#undef _
ESP_ENCRYPT_N_ERROR,
} esp_encrypt_error_t;
static char *esp_encrypt_error_strings[] = {
#define _(sym,string) string,
foreach_esp_encrypt_error
#undef _
};
typedef struct
{
u32 sa_index;
u32 spi;
u32 seq;
u32 sa_seq_hi;
u8 udp_encap;
ipsec_crypto_alg_t crypto_alg;
ipsec_integ_alg_t integ_alg;
} esp_encrypt_trace_t;
typedef struct
{
u32 next_index;
} esp_encrypt_post_trace_t;
/* packet trace format function */
static u8 *
format_esp_encrypt_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_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: sa-index %d spi %u (0x%08x) seq %u sa-seq-hi %u crypto %U integrity %U%s",
t->sa_index, t->spi, t->spi, t->seq, t->sa_seq_hi,
format_ipsec_crypto_alg,
t->crypto_alg, format_ipsec_integ_alg, t->integ_alg,
t->udp_encap ? " udp-encap-enabled" : "");
return s;
}
static u8 *
format_esp_post_encrypt_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
esp_encrypt_post_trace_t *t = va_arg (*args, esp_encrypt_post_trace_t *);
s = format (s, "esp-post: next node index %u", t->next_index);
return s;
}
/* pad packet in input buffer */
static_always_inline u8 *
esp_add_footer_and_icv (vlib_main_t *vm, vlib_buffer_t **last, u8 esp_align,
u8 icv_sz, vlib_node_runtime_t *node,
u16 buffer_data_size, uword total_len)
{
static const u8 pad_data[ESP_MAX_BLOCK_SIZE] = {
0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x00,
};
u16 min_length = total_len + sizeof (esp_footer_t);
u16 new_length = round_pow2 (min_length, esp_align);
u8 pad_bytes = new_length - min_length;
esp_footer_t *f = (esp_footer_t *) (vlib_buffer_get_current (last[0]) +
last[0]->current_length + pad_bytes);
u16 tail_sz = sizeof (esp_footer_t) + pad_bytes + icv_sz;
if (last[0]->current_data + last[0]->current_length + tail_sz >
buffer_data_size)
{
u32 tmp_bi = 0;
if (vlib_buffer_alloc (vm, &tmp_bi, 1) != 1)
return 0;
vlib_buffer_t *tmp = vlib_get_buffer (vm, tmp_bi);
last[0]->next_buffer = tmp_bi;
last[0]->flags |= VLIB_BUFFER_NEXT_PRESENT;
f = (esp_footer_t *) (vlib_buffer_get_current (tmp) + pad_bytes);
tmp->current_length += tail_sz;
last[0] = tmp;
}
else
last[0]->current_length += tail_sz;
f->pad_length = pad_bytes;
if (pad_bytes)
{
ASSERT (pad_bytes <= ESP_MAX_BLOCK_SIZE);
pad_bytes = clib_min (ESP_MAX_BLOCK_SIZE, pad_bytes);
clib_memcpy_fast ((u8 *) f - pad_bytes, pad_data, pad_bytes);
}
return &f->next_header;
}
static_always_inline void
esp_update_ip4_hdr (ip4_header_t * ip4, u16 len, int is_transport, int is_udp)
{
ip_csum_t sum;
u16 old_len;
len = clib_net_to_host_u16 (len);
old_len = ip4->length;
if (is_transport)
{
u8 prot = is_udp ? IP_PROTOCOL_UDP : IP_PROTOCOL_IPSEC_ESP;
sum = ip_csum_update (ip4->checksum, ip4->protocol,
prot, ip4_header_t, protocol);
ip4->protocol = prot;
sum = ip_csum_update (sum, old_len, len, ip4_header_t, length);
}
else
sum = ip_csum_update (ip4->checksum, old_len, len, ip4_header_t, length);
ip4->length = len;
ip4->checksum = ip_csum_fold (sum);
}
static_always_inline void
esp_fill_udp_hdr (ipsec_sa_t * sa, udp_header_t * udp, u16 len)
{
clib_memcpy_fast (udp, &sa->udp_hdr, sizeof (udp_header_t));
udp->length = clib_net_to_host_u16 (len);
}
static_always_inline u8
ext_hdr_is_pre_esp (u8 nexthdr)
{
#ifdef CLIB_HAVE_VEC128
static const u8x16 ext_hdr_types = {
IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS,
IP_PROTOCOL_IPV6_ROUTE,
IP_PROTOCOL_IPV6_FRAGMENTATION,
};
return !u8x16_is_all_zero (ext_hdr_types == u8x16_splat (nexthdr));
#else
return ((nexthdr ^ IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
(nexthdr ^ IP_PROTOCOL_IPV6_ROUTE) |
((nexthdr ^ IP_PROTOCOL_IPV6_FRAGMENTATION) != 0));
#endif
}
static_always_inline u8
esp_get_ip6_hdr_len (ip6_header_t * ip6, ip6_ext_header_t ** ext_hdr)
{
/* this code assumes that HbH, route and frag headers will be before
others, if that is not the case, they will end up encrypted */
u8 len = sizeof (ip6_header_t);
ip6_ext_header_t *p;
/* if next packet doesn't have ext header */
if (ext_hdr_is_pre_esp (ip6->protocol) == 0)
{
*ext_hdr = NULL;
return len;
}
p = (void *) (ip6 + 1);
len += ip6_ext_header_len (p);
while (ext_hdr_is_pre_esp (p->next_hdr))
{
len += ip6_ext_header_len (p);
p = ip6_ext_next_header (p);
}
*ext_hdr = p;
return len;
}
static_always_inline void
esp_process_chained_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
vnet_crypto_op_t * ops, vlib_buffer_t * b[],
u16 * nexts, vnet_crypto_op_chunk_t * chunks,
u16 drop_next)
{
u32 n_fail, n_ops = vec_len (ops);
vnet_crypto_op_t *op = ops;
if (n_ops == 0)
return;
n_fail = n_ops - vnet_crypto_process_chained_ops (vm, op, chunks, n_ops);
while (n_fail)
{
ASSERT (op - ops < n_ops);
if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
{
u32 bi = op->user_data;
b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
nexts[bi] = drop_next;
n_fail--;
}
op++;
}
}
static_always_inline void
esp_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
vnet_crypto_op_t * ops, vlib_buffer_t * b[], u16 * nexts,
u16 drop_next)
{
u32 n_fail, n_ops = vec_len (ops);
vnet_crypto_op_t *op = ops;
if (n_ops == 0)
return;
n_fail = n_ops - vnet_crypto_process_ops (vm, op, n_ops);
while (n_fail)
{
ASSERT (op - ops < n_ops);
if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
{
u32 bi = op->user_data;
b[bi]->error = node->errors[ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
nexts[bi] = drop_next;
n_fail--;
}
op++;
}
}
static_always_inline u32
esp_encrypt_chain_crypto (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
ipsec_sa_t * sa0, vlib_buffer_t * b,
vlib_buffer_t * lb, u8 icv_sz, u8 * start,
u32 start_len, u16 * n_ch)
{
vnet_crypto_op_chunk_t *ch;
vlib_buffer_t *cb = b;
u32 n_chunks = 1;
u32 total_len;
vec_add2 (ptd->chunks, ch, 1);
total_len = ch->len = start_len;
ch->src = ch->dst = start;
cb = vlib_get_buffer (vm, cb->next_buffer);
while (1)
{
vec_add2 (ptd->chunks, ch, 1);
n_chunks += 1;
if (lb == cb)
total_len += ch->len = cb->current_length - icv_sz;
else
total_len += ch->len = cb->current_length;
ch->src = ch->dst = vlib_buffer_get_current (cb);
if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
break;
cb = vlib_get_buffer (vm, cb->next_buffer);
}
if (n_ch)
*n_ch = n_chunks;
return total_len;
}
static_always_inline u32
esp_encrypt_chain_integ (vlib_main_t * vm, ipsec_per_thread_data_t * ptd,
ipsec_sa_t * sa0, vlib_buffer_t * b,
vlib_buffer_t * lb, u8 icv_sz, u8 * start,
u32 start_len, u8 * digest, u16 * n_ch)
{
vnet_crypto_op_chunk_t *ch;
vlib_buffer_t *cb = b;
u32 n_chunks = 1;
u32 total_len;
vec_add2 (ptd->chunks, ch, 1);
total_len = ch->len = start_len;
ch->src = start;
cb = vlib_get_buffer (vm, cb->next_buffer);
while (1)
{
vec_add2 (ptd->chunks, ch, 1);
n_chunks += 1;
if (lb == cb)
{
total_len += ch->len = cb->current_length - icv_sz;
if (ipsec_sa_is_set_USE_ESN (sa0))
{
u32 seq_hi = clib_net_to_host_u32 (sa0->seq_hi);
clib_memcpy_fast (digest, &seq_hi, sizeof (seq_hi));
ch->len += sizeof (seq_hi);
total_len += sizeof (seq_hi);
}
}
else
total_len += ch->len = cb->current_length;
ch->src = vlib_buffer_get_current (cb);
if (!(cb->flags & VLIB_BUFFER_NEXT_PRESENT))
break;
cb = vlib_get_buffer (vm, cb->next_buffer);
}
if (n_ch)
*n_ch = n_chunks;
return total_len;
}
always_inline void
esp_prepare_sync_op (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
vnet_crypto_op_t **crypto_ops,
vnet_crypto_op_t **integ_ops, ipsec_sa_t *sa0, u32 seq_hi,
u8 *payload, u16 payload_len, u8 iv_sz, u8 icv_sz, u32 bi,
vlib_buffer_t **b, vlib_buffer_t *lb, u32 hdr_len,
esp_header_t *esp)
{
if (sa0->crypto_enc_op_id)
{
vnet_crypto_op_t *op;
vec_add2_aligned (crypto_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
vnet_crypto_op_init (op, sa0->crypto_enc_op_id);
op->src = op->dst = payload;
op->key_index = sa0->crypto_key_index;
op->len = payload_len - icv_sz;
op->user_data = bi;
if (ipsec_sa_is_set_IS_CTR (sa0))
{
ASSERT (sizeof (u64) == iv_sz);
/* construct nonce in a scratch space in front of the IP header */
esp_ctr_nonce_t *nonce =
(esp_ctr_nonce_t *) (payload - sizeof (u64) - hdr_len -
sizeof (*nonce));
u64 *pkt_iv = (u64 *) (payload - sizeof (u64));
if (ipsec_sa_is_set_IS_AEAD (sa0))
{
/* constuct aad in a scratch space in front of the nonce */
op->aad = (u8 *) nonce - sizeof (esp_aead_t);
op->aad_len = esp_aad_fill (op->aad, esp, sa0, seq_hi);
op->tag = payload + op->len;
op->tag_len = 16;
}
else
{
nonce->ctr = clib_host_to_net_u32 (1);
}
nonce->salt = sa0->salt;
nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa0->ctr_iv_counter++);
op->iv = (u8 *) nonce;
}
else
{
op->iv = payload - iv_sz;
op->flags = VNET_CRYPTO_OP_FLAG_INIT_IV;
}
if (lb != b[0])
{
/* is chained */
op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
op->chunk_index = vec_len (ptd->chunks);
op->tag = vlib_buffer_get_tail (lb) - icv_sz;
esp_encrypt_chain_crypto (vm, ptd, sa0, b[0], lb, icv_sz, payload,
payload_len, &op->n_chunks);
}
}
if (sa0->integ_op_id)
{
vnet_crypto_op_t *op;
vec_add2_aligned (integ_ops[0], op, 1, CLIB_CACHE_LINE_BYTES);
vnet_crypto_op_init (op, sa0->integ_op_id);
op->src = payload - iv_sz - sizeof (esp_header_t);
op->digest = payload + payload_len - icv_sz;
op->key_index = sa0->integ_key_index;
op->digest_len = icv_sz;
op->len = payload_len - icv_sz + iv_sz + sizeof (esp_header_t);
op->user_data = bi;
if (lb != b[0])
{
/* is chained */
op->flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
op->chunk_index = vec_len (ptd->chunks);
op->digest = vlib_buffer_get_tail (lb) - icv_sz;
esp_encrypt_chain_integ (vm, ptd, sa0, b[0], lb, icv_sz,
payload - iv_sz - sizeof (esp_header_t),
payload_len + iv_sz +
sizeof (esp_header_t), op->digest,
&op->n_chunks);
}
else if (ipsec_sa_is_set_USE_ESN (sa0))
{
u32 tmp = clib_net_to_host_u32 (seq_hi);
clib_memcpy_fast (op->digest, &tmp, sizeof (seq_hi));
op->len += sizeof (seq_hi);
}
}
}
static_always_inline void
esp_prepare_async_frame (vlib_main_t *vm, ipsec_per_thread_data_t *ptd,
vnet_crypto_async_frame_t *async_frame,
ipsec_sa_t *sa, vlib_buffer_t *b, esp_header_t *esp,
u8 *payload, u32 payload_len, u8 iv_sz, u8 icv_sz,
u32 bi, u16 next, u32 hdr_len, u16 async_next,
vlib_buffer_t *lb)
{
esp_post_data_t *post = esp_post_data (b);
u8 *tag, *iv, *aad = 0;
u8 flag = 0;
u32 key_index;
i16 crypto_start_offset, integ_start_offset = 0;
u16 crypto_total_len, integ_total_len;
post->next_index = next;
/* crypto */
crypto_start_offset = payload - b->data;
crypto_total_len = integ_total_len = payload_len - icv_sz;
tag = payload + crypto_total_len;
key_index = sa->linked_key_index;
if (ipsec_sa_is_set_IS_CTR (sa))
{
ASSERT (sizeof (u64) == iv_sz);
/* construct nonce in a scratch space in front of the IP header */
esp_ctr_nonce_t *nonce = (esp_ctr_nonce_t *) (payload - sizeof (u64) -
hdr_len - sizeof (*nonce));
u64 *pkt_iv = (u64 *) (payload - sizeof (u64));
if (ipsec_sa_is_set_IS_AEAD (sa))
{
/* constuct aad in a scratch space in front of the nonce */
aad = (u8 *) nonce - sizeof (esp_aead_t);
esp_aad_fill (aad, esp, sa, sa->seq_hi);
key_index = sa->crypto_key_index;
}
else
{
nonce->ctr = clib_host_to_net_u32 (1);
}
nonce->salt = sa->salt;
nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa->ctr_iv_counter++);
iv = (u8 *) nonce;
}
else
{
iv = payload - iv_sz;
flag |= VNET_CRYPTO_OP_FLAG_INIT_IV;
}
if (lb != b)
{
/* chain */
flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
tag = vlib_buffer_get_tail (lb) - icv_sz;
crypto_total_len = esp_encrypt_chain_crypto (vm, ptd, sa, b, lb, icv_sz,
payload, payload_len, 0);
}
if (sa->integ_op_id)
{
integ_start_offset = crypto_start_offset - iv_sz - sizeof (esp_header_t);
integ_total_len += iv_sz + sizeof (esp_header_t);
if (b != lb)
{
integ_total_len = esp_encrypt_chain_integ (
vm, ptd, sa, b, lb, icv_sz,
payload - iv_sz - sizeof (esp_header_t),
payload_len + iv_sz + sizeof (esp_header_t), tag, 0);
}
else if (ipsec_sa_is_set_USE_ESN (sa))
{
u32 seq_hi = clib_net_to_host_u32 (sa->seq_hi);
clib_memcpy_fast (tag, &seq_hi, sizeof (seq_hi));
integ_total_len += sizeof (seq_hi);
}
}
/* this always succeeds because we know the frame is not full */
vnet_crypto_async_add_to_frame (vm, async_frame, key_index, crypto_total_len,
integ_total_len - crypto_total_len,
crypto_start_offset, integ_start_offset, bi,
async_next, iv, tag, aad, flag);
}
always_inline uword
esp_encrypt_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
vlib_frame_t *frame, vnet_link_t lt, int is_tun,
u16 async_next_node)
{
ipsec_main_t *im = &ipsec_main;
ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, vm->thread_index);
u32 *from = vlib_frame_vector_args (frame);
u32 n_left = frame->n_vectors;
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
u32 thread_index = vm->thread_index;
u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
u32 current_sa_index = ~0, current_sa_packets = 0;
u32 current_sa_bytes = 0, spi = 0;
u8 esp_align = 4, iv_sz = 0, icv_sz = 0;
ipsec_sa_t *sa0 = 0;
vlib_buffer_t *lb;
vnet_crypto_op_t **crypto_ops = &ptd->crypto_ops;
vnet_crypto_op_t **integ_ops = &ptd->integ_ops;
vnet_crypto_async_frame_t *async_frames[VNET_CRYPTO_ASYNC_OP_N_IDS];
int is_async = im->async_mode;
vnet_crypto_async_op_id_t async_op = ~0;
u16 drop_next =
(lt == VNET_LINK_IP6 ? ESP_ENCRYPT_NEXT_DROP6 :
(lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_DROP4 :
ESP_ENCRYPT_NEXT_DROP_MPLS));
u16 handoff_next = (lt == VNET_LINK_IP6 ?
ESP_ENCRYPT_NEXT_HANDOFF6 :
(lt == VNET_LINK_IP4 ? ESP_ENCRYPT_NEXT_HANDOFF4 :
ESP_ENCRYPT_NEXT_HANDOFF_MPLS));
vlib_buffer_t *sync_bufs[VLIB_FRAME_SIZE];
u16 sync_nexts[VLIB_FRAME_SIZE], *sync_next = sync_nexts, n_sync = 0;
u16 async_nexts[VLIB_FRAME_SIZE], *async_next = async_nexts, n_async = 0;
u16 noop_nexts[VLIB_FRAME_SIZE], *noop_next = noop_nexts, n_noop = 0;
u32 sync_bi[VLIB_FRAME_SIZE];
u32 noop_bi[VLIB_FRAME_SIZE];
esp_encrypt_error_t err;
vlib_get_buffers (vm, from, b, n_left);
vec_reset_length (ptd->crypto_ops);
vec_reset_length (ptd->integ_ops);
vec_reset_length (ptd->chained_crypto_ops);
vec_reset_length (ptd->chained_integ_ops);
vec_reset_length (ptd->async_frames);
vec_reset_length (ptd->chunks);
clib_memset (async_frames, 0, sizeof (async_frames));
while (n_left > 0)
{
u32 sa_index0;
dpo_id_t *dpo;
esp_header_t *esp;
u8 *payload, *next_hdr_ptr;
u16 payload_len, payload_len_total, n_bufs;
u32 hdr_len;
err = ESP_ENCRYPT_ERROR_RX_PKTS;
if (n_left > 2)
{
u8 *p;
vlib_prefetch_buffer_header (b[2], LOAD);
p = vlib_buffer_get_current (b[1]);
clib_prefetch_load (p);
p -= CLIB_CACHE_LINE_BYTES;
clib_prefetch_load (p);
/* speculate that the trailer goes in the first buffer */
CLIB_PREFETCH (vlib_buffer_get_tail (b[1]),
CLIB_CACHE_LINE_BYTES, LOAD);
}
if (is_tun)
{
/* we are on a ipsec tunnel's feature arc */
vnet_buffer (b[0])->ipsec.sad_index =
sa_index0 = ipsec_tun_protect_get_sa_out
(vnet_buffer (b[0])->ip.adj_index[VLIB_TX]);
if (PREDICT_FALSE (INDEX_INVALID == sa_index0))
{
err = ESP_ENCRYPT_ERROR_NO_PROTECTION;
esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
drop_next);
goto trace;
}
}
else
sa_index0 = vnet_buffer (b[0])->ipsec.sad_index;
if (sa_index0 != current_sa_index)
{
if (current_sa_packets)
vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
current_sa_index,
current_sa_packets,
current_sa_bytes);
current_sa_packets = current_sa_bytes = 0;
sa0 = ipsec_sa_get (sa_index0);
if (PREDICT_FALSE ((sa0->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
sa0->integ_alg == IPSEC_INTEG_ALG_NONE) &&
!ipsec_sa_is_set_NO_ALGO_NO_DROP (sa0)))
{
err = ESP_ENCRYPT_ERROR_NO_ENCRYPTION;
esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
drop_next);
goto trace;
}
/* fetch the second cacheline ASAP */
clib_prefetch_load (sa0->cacheline1);
current_sa_index = sa_index0;
spi = clib_net_to_host_u32 (sa0->spi);
esp_align = sa0->esp_block_align;
icv_sz = sa0->integ_icv_size;
iv_sz = sa0->crypto_iv_size;
is_async = im->async_mode | ipsec_sa_is_set_IS_ASYNC (sa0);
}
if (PREDICT_FALSE (~0 == sa0->thread_index))
{
/* this is the first packet to use this SA, claim the SA
* for this thread. this could happen simultaneously on
* another thread */
clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
ipsec_sa_assign_thread (thread_index));
}
if (PREDICT_FALSE (thread_index != sa0->thread_index))
{
vnet_buffer (b[0])->ipsec.thread_index = sa0->thread_index;
err = ESP_ENCRYPT_ERROR_HANDOFF;
esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
handoff_next);
goto trace;
}
lb = b[0];
n_bufs = vlib_buffer_chain_linearize (vm, b[0]);
if (n_bufs == 0)
{
err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
esp_set_next_index (b[0], node, err, n_noop, noop_nexts, drop_next);
goto trace;
}
if (n_bufs > 1)
{
/* find last buffer in the chain */
while (lb->flags & VLIB_BUFFER_NEXT_PRESENT)
lb = vlib_get_buffer (vm, lb->next_buffer);
}
if (PREDICT_FALSE (esp_seq_advance (sa0)))
{
err = ESP_ENCRYPT_ERROR_SEQ_CYCLED;
esp_set_next_index (b[0], node, err, n_noop, noop_nexts, drop_next);
goto trace;
}
/* space for IV */
hdr_len = iv_sz;
if (ipsec_sa_is_set_IS_TUNNEL (sa0))
{
payload = vlib_buffer_get_current (b[0]);
next_hdr_ptr = esp_add_footer_and_icv (
vm, &lb, esp_align, icv_sz, node, buffer_data_size,
vlib_buffer_length_in_chain (vm, b[0]));
if (!next_hdr_ptr)
{
err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
drop_next);
goto trace;
}
b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
payload_len = b[0]->current_length;
payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
/* ESP header */
hdr_len += sizeof (*esp);
esp = (esp_header_t *) (payload - hdr_len);
/* optional UDP header */
if (ipsec_sa_is_set_UDP_ENCAP (sa0))
{
hdr_len += sizeof (udp_header_t);
esp_fill_udp_hdr (sa0, (udp_header_t *) (payload - hdr_len),
payload_len_total + hdr_len);
}
/* IP header */
if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
{
ip6_header_t *ip6;
u16 len = sizeof (ip6_header_t);
hdr_len += len;
ip6 = (ip6_header_t *) (payload - hdr_len);
clib_memcpy_fast (ip6, &sa0->ip6_hdr, sizeof (ip6_header_t));
if (VNET_LINK_IP6 == lt)
{
*next_hdr_ptr = IP_PROTOCOL_IPV6;
tunnel_encap_fixup_6o6 (sa0->tunnel_flags,
(const ip6_header_t *) payload,
ip6);
}
else if (VNET_LINK_IP4 == lt)
{
*next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
tunnel_encap_fixup_4o6 (sa0->tunnel_flags, b[0],
(const ip4_header_t *) payload, ip6);
}
else if (VNET_LINK_MPLS == lt)
{
*next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
tunnel_encap_fixup_mplso6 (
sa0->tunnel_flags, b[0],
(const mpls_unicast_header_t *) payload, ip6);
}
else
ASSERT (0);
len = payload_len_total + hdr_len - len;
ip6->payload_length = clib_net_to_host_u16 (len);
b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
}
else
{
ip4_header_t *ip4;
u16 len = sizeof (ip4_header_t);
hdr_len += len;
ip4 = (ip4_header_t *) (payload - hdr_len);
clib_memcpy_fast (ip4, &sa0->ip4_hdr, sizeof (ip4_header_t));
if (VNET_LINK_IP6 == lt)
{
*next_hdr_ptr = IP_PROTOCOL_IPV6;
tunnel_encap_fixup_6o4_w_chksum (sa0->tunnel_flags,
(const ip6_header_t *)
payload, ip4);
}
else if (VNET_LINK_IP4 == lt)
{
*next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
tunnel_encap_fixup_4o4_w_chksum (sa0->tunnel_flags,
(const ip4_header_t *)
payload, ip4);
}
else if (VNET_LINK_MPLS == lt)
{
*next_hdr_ptr = IP_PROTOCOL_MPLS_IN_IP;
tunnel_encap_fixup_mplso4_w_chksum (
sa0->tunnel_flags, (const mpls_unicast_header_t *) payload,
ip4);
}
else
ASSERT (0);
len = payload_len_total + hdr_len;
esp_update_ip4_hdr (ip4, len, /* is_transport */ 0, 0);
}
dpo = &sa0->dpo;
if (!is_tun)
{
sync_next[0] = dpo->dpoi_next_node;
vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo->dpoi_index;
}
else
sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
b[0]->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
}
else /* transport mode */
{
u8 *l2_hdr, l2_len, *ip_hdr, ip_len;
ip6_ext_header_t *ext_hdr;
udp_header_t *udp = 0;
u16 udp_len = 0;
u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
ip_len =
(VNET_LINK_IP6 == lt ?
esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
ip4_header_bytes ((ip4_header_t *) old_ip_hdr));
vlib_buffer_advance (b[0], ip_len);
payload = vlib_buffer_get_current (b[0]);
next_hdr_ptr = esp_add_footer_and_icv (
vm, &lb, esp_align, icv_sz, node, buffer_data_size,
vlib_buffer_length_in_chain (vm, b[0]));
if (!next_hdr_ptr)
{
err = ESP_ENCRYPT_ERROR_NO_BUFFERS;
esp_set_next_index (b[0], node, err, n_noop, noop_nexts,
drop_next);
goto trace;
}
b[0]->flags &= ~VLIB_BUFFER_TOTAL_LENGTH_VALID;
payload_len = b[0]->current_length;
payload_len_total = vlib_buffer_length_in_chain (vm, b[0]);
/* ESP header */
hdr_len += sizeof (*esp);
esp = (esp_header_t *) (payload - hdr_len);
/* optional UDP header */
if (ipsec_sa_is_set_UDP_ENCAP (sa0))
{
hdr_len += sizeof (udp_header_t);
udp = (udp_header_t *) (payload - hdr_len);
}
/* IP header */
hdr_len += ip_len;
ip_hdr = payload - hdr_len;
/* L2 header */
if (!is_tun)
{
l2_len = vnet_buffer (b[0])->ip.save_rewrite_length;
hdr_len += l2_len;
l2_hdr = payload - hdr_len;
/* copy l2 and ip header */
clib_memcpy_le32 (l2_hdr, old_ip_hdr - l2_len, l2_len);
}
else
l2_len = 0;
if (VNET_LINK_IP6 == lt)
{
ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
if (PREDICT_TRUE (NULL == ext_hdr))
{
*next_hdr_ptr = ip6->protocol;
ip6->protocol = IP_PROTOCOL_IPSEC_ESP;
}
else
{
*next_hdr_ptr = ext_hdr->next_hdr;
ext_hdr->next_hdr = IP_PROTOCOL_IPSEC_ESP;
}
ip6->payload_length =
clib_host_to_net_u16 (payload_len_total + hdr_len - l2_len -
sizeof (ip6_header_t));
}
else if (VNET_LINK_IP4 == lt)
{
u16 len;
ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
*next_hdr_ptr = ip4->protocol;
len = payload_len_total + hdr_len - l2_len;
if (udp)
{
esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 1);
udp_len = len - ip_len;
}
else
esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 0);
}
clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
if (udp)
{
esp_fill_udp_hdr (sa0, udp, udp_len);
}
sync_next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
}
if (lb != b[0])
{
crypto_ops = &ptd->chained_crypto_ops;
integ_ops = &ptd->chained_integ_ops;
}
else
{
crypto_ops = &ptd->crypto_ops;
integ_ops = &ptd->integ_ops;
}
esp->spi = spi;
esp->seq = clib_net_to_host_u32 (sa0->seq);
if (is_async)
{
async_op = sa0->crypto_async_enc_op_id;
/* get a frame for this op if we don't yet have one or it's full
*/
if (NULL == async_frames[async_op] ||
vnet_crypto_async_frame_is_full (async_frames[async_op]))
{
async_frames[async_op] =
vnet_crypto_async_get_frame (vm, async_op);
/* Save the frame to the list we'll submit at the end */
vec_add1 (ptd->async_frames, async_frames[async_op]);
}
esp_prepare_async_frame (vm, ptd, async_frames[async_op], sa0, b[0],
esp, payload, payload_len, iv_sz, icv_sz,
from[b - bufs], sync_next[0], hdr_len,
async_next_node, lb);
}
else
esp_prepare_sync_op (vm, ptd, crypto_ops, integ_ops, sa0, sa0->seq_hi,
payload, payload_len, iv_sz, icv_sz, n_sync, b,
lb, hdr_len, esp);
vlib_buffer_advance (b[0], 0LL - hdr_len);
current_sa_packets += 1;
current_sa_bytes += payload_len_total;
trace:
if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
{
esp_encrypt_trace_t *tr = vlib_add_trace (vm, node, b[0],
sizeof (*tr));
if (INDEX_INVALID == sa_index0)
clib_memset_u8 (tr, 0xff, sizeof (*tr));
else
{
tr->sa_index = sa_index0;
tr->spi = sa0->spi;
tr->spi = sa0->spi;
tr->seq = sa0->seq;
tr->sa_seq_hi = sa0->seq_hi;
tr->udp_encap = ipsec_sa_is_set_UDP_ENCAP (sa0);
tr->crypto_alg = sa0->crypto_alg;
tr->integ_alg = sa0->integ_alg;
}
}
/* next */
if (ESP_ENCRYPT_ERROR_RX_PKTS != err)
{
noop_bi[n_noop] = from[b - bufs];
n_noop++;
noop_next++;
}
else if (!is_async)
{
sync_bi[n_sync] = from[b - bufs];
sync_bufs[n_sync] = b[0];
n_sync++;
sync_next++;
}
else
{
n_async++;
async_next++;
}
n_left -= 1;
b += 1;
}
if (INDEX_INVALID != current_sa_index)
vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
current_sa_index, current_sa_packets,
current_sa_bytes);
if (n_sync)
{
esp_process_ops (vm, node, ptd->crypto_ops, sync_bufs, sync_nexts,
drop_next);
esp_process_chained_ops (vm, node, ptd->chained_crypto_ops, sync_bufs,
sync_nexts, ptd->chunks, drop_next);
esp_process_ops (vm, node, ptd->integ_ops, sync_bufs, sync_nexts,
drop_next);
esp_process_chained_ops (vm, node, ptd->chained_integ_ops, sync_bufs,
sync_nexts, ptd->chunks, drop_next);
vlib_buffer_enqueue_to_next (vm, node, sync_bi, sync_nexts, n_sync);
}
if (n_async)
{
/* submit all of the open frames */
vnet_crypto_async_frame_t **async_frame;
vec_foreach (async_frame, ptd->async_frames)
{
if (vnet_crypto_async_submit_open_frame (vm, *async_frame) < 0)
{
n_noop += esp_async_recycle_failed_submit (
vm, *async_frame, node, ESP_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR,
n_sync, noop_bi, noop_nexts, drop_next);
vnet_crypto_async_reset_frame (*async_frame);
vnet_crypto_async_free_frame (vm, *async_frame);
}
}
}
if (n_noop)
vlib_buffer_enqueue_to_next (vm, node, noop_bi, noop_nexts, n_noop);
vlib_node_increment_counter (vm, node->node_index, ESP_ENCRYPT_ERROR_RX_PKTS,
frame->n_vectors);
return frame->n_vectors;
}
always_inline uword
esp_encrypt_post_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
u32 *from = vlib_frame_vector_args (frame);
u32 n_left = frame->n_vectors;
vlib_get_buffers (vm, from, b, n_left);
if (n_left >= 4)
{
vlib_prefetch_buffer_header (b[0], LOAD);
vlib_prefetch_buffer_header (b[1], LOAD);
vlib_prefetch_buffer_header (b[2], LOAD);
vlib_prefetch_buffer_header (b[3], LOAD);
}
while (n_left > 8)
{
vlib_prefetch_buffer_header (b[4], LOAD);
vlib_prefetch_buffer_header (b[5], LOAD);
vlib_prefetch_buffer_header (b[6], LOAD);
vlib_prefetch_buffer_header (b[7], LOAD);
next[0] = (esp_post_data (b[0]))->next_index;
next[1] = (esp_post_data (b[1]))->next_index;
next[2] = (esp_post_data (b[2]))->next_index;
next[3] = (esp_post_data (b[3]))->next_index;
if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
{
if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
{
esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
sizeof (*tr));
tr->next_index = next[0];
}
if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
{
esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[1],
sizeof (*tr));
tr->next_index = next[1];
}
if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
{
esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[2],
sizeof (*tr));
tr->next_index = next[2];
}
if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
{
esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[3],
sizeof (*tr));
tr->next_index = next[3];
}
}
b += 4;
next += 4;
n_left -= 4;
}
while (n_left > 0)
{
next[0] = (esp_post_data (b[0]))->next_index;
if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
{
esp_encrypt_post_trace_t *tr = vlib_add_trace (vm, node, b[0],
sizeof (*tr));
tr->next_index = next[0];
}
b += 1;
next += 1;
n_left -= 1;
}
vlib_node_increment_counter (vm, node->node_index,
ESP_ENCRYPT_ERROR_POST_RX_PKTS,
frame->n_vectors);
vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
return 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, VNET_LINK_IP4, 0,
esp_encrypt_async_next.esp4_post_next);
}
/* *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 = { [ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
[ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
[ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
[ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-handoff",
[ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-handoff",
[ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "error-drop",
[ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "interface-output" },
};
/* *INDENT-ON* */
VLIB_NODE_FN (esp4_encrypt_post_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
return esp_encrypt_post_inline (vm, node, from_frame);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (esp4_encrypt_post_node) = {
.name = "esp4-encrypt-post",
.vector_size = sizeof (u32),
.format_trace = format_esp_post_encrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.sibling_of = "esp4-encrypt",
.n_errors = ARRAY_LEN(esp_encrypt_error_strings),
.error_strings = esp_encrypt_error_strings,
};
/* *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, VNET_LINK_IP6, 0,
esp_encrypt_async_next.esp6_post_next);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (esp6_encrypt_node) = {
.name = "esp6-encrypt",
.vector_size = sizeof (u32),
.format_trace = format_esp_encrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.sibling_of = "esp4-encrypt",
.n_errors = ARRAY_LEN(esp_encrypt_error_strings),
.error_strings = esp_encrypt_error_strings,
};
/* *INDENT-ON* */
VLIB_NODE_FN (esp6_encrypt_post_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
return esp_encrypt_post_inline (vm, node, from_frame);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (esp6_encrypt_post_node) = {
.name = "esp6-encrypt-post",
.vector_size = sizeof (u32),
.format_trace = format_esp_post_encrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.sibling_of = "esp4-encrypt",
.n_errors = ARRAY_LEN(esp_encrypt_error_strings),
.error_strings = esp_encrypt_error_strings,
};
/* *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, VNET_LINK_IP4, 1,
esp_encrypt_async_next.esp4_tun_post_next);
}
/* *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,
.n_next_nodes = ESP_ENCRYPT_N_NEXT,
.next_nodes = {
[ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
[ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
[ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
[ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
[ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
[ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
[ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
},
};
VLIB_NODE_FN (esp4_encrypt_tun_post_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
return esp_encrypt_post_inline (vm, node, from_frame);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (esp4_encrypt_tun_post_node) = {
.name = "esp4-encrypt-tun-post",
.vector_size = sizeof (u32),
.format_trace = format_esp_post_encrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.sibling_of = "esp4-encrypt-tun",
.n_errors = ARRAY_LEN(esp_encrypt_error_strings),
.error_strings = esp_encrypt_error_strings,
};
/* *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, VNET_LINK_IP6, 1,
esp_encrypt_async_next.esp6_tun_post_next);
}
/* *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,
.n_next_nodes = ESP_ENCRYPT_N_NEXT,
.next_nodes = {
[ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
[ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
[ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
[ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
[ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
[ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
[ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
},
};
/* *INDENT-ON* */
VLIB_NODE_FN (esp6_encrypt_tun_post_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
return esp_encrypt_post_inline (vm, node, from_frame);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (esp6_encrypt_tun_post_node) = {
.name = "esp6-encrypt-tun-post",
.vector_size = sizeof (u32),
.format_trace = format_esp_post_encrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.sibling_of = "esp-mpls-encrypt-tun",
.n_errors = ARRAY_LEN (esp_encrypt_error_strings),
.error_strings = esp_encrypt_error_strings,
};
/* *INDENT-ON* */
VLIB_NODE_FN (esp_mpls_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, VNET_LINK_MPLS, 1,
esp_encrypt_async_next.esp_mpls_tun_post_next);
}
VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_node) = {
.name = "esp-mpls-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,
.n_next_nodes = ESP_ENCRYPT_N_NEXT,
.next_nodes = {
[ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
[ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
[ESP_ENCRYPT_NEXT_DROP_MPLS] = "mpls-drop",
[ESP_ENCRYPT_NEXT_HANDOFF4] = "esp4-encrypt-tun-handoff",
[ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-tun-handoff",
[ESP_ENCRYPT_NEXT_HANDOFF_MPLS] = "esp-mpls-encrypt-tun-handoff",
[ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "adj-midchain-tx",
},
};
VLIB_NODE_FN (esp_mpls_encrypt_tun_post_node)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
{
return esp_encrypt_post_inline (vm, node, from_frame);
}
VLIB_REGISTER_NODE (esp_mpls_encrypt_tun_post_node) = {
.name = "esp-mpls-encrypt-tun-post",
.vector_size = sizeof (u32),
.format_trace = format_esp_post_encrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.sibling_of = "esp-mpls-encrypt-tun",
.n_errors = ARRAY_LEN (esp_encrypt_error_strings),
.error_strings = esp_encrypt_error_strings,
};
#ifndef CLIB_MARCH_VARIANT
static clib_error_t *
esp_encrypt_init (vlib_main_t *vm)
{
ipsec_main_t *im = &ipsec_main;
im->esp4_enc_fq_index =
vlib_frame_queue_main_init (esp4_encrypt_node.index, 0);
im->esp6_enc_fq_index =
vlib_frame_queue_main_init (esp6_encrypt_node.index, 0);
im->esp4_enc_tun_fq_index =
vlib_frame_queue_main_init (esp4_encrypt_tun_node.index, 0);
im->esp6_enc_tun_fq_index =
vlib_frame_queue_main_init (esp6_encrypt_tun_node.index, 0);
im->esp_mpls_enc_tun_fq_index =
vlib_frame_queue_main_init (esp_mpls_encrypt_tun_node.index, 0);
return 0;
}
VLIB_INIT_FUNCTION (esp_encrypt_init);
#endif
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/