#include <vnet/ipsec/esp.h>
#include <vnet/tunnel/tunnel_dp.h>
-#define foreach_esp_encrypt_next \
-_(DROP4, "ip4-drop") \
-_(DROP6, "ip6-drop") \
-_(HANDOFF4, "handoff4") \
-_(HANDOFF6, "handoff6") \
-_(INTERFACE_OUTPUT, "interface-output")
+#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
}
}
-typedef struct
-{
- u32 salt;
- u64 iv;
-} __clib_packed esp_gcm_nonce_t;
-
-STATIC_ASSERT_SIZEOF (esp_gcm_nonce_t, 12);
-
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,
}
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,
- u8 * payload, u16 payload_len, u8 iv_sz, u8 icv_sz,
- vlib_buffer_t ** bufs, vlib_buffer_t ** b,
- vlib_buffer_t * lb, u32 hdr_len, esp_header_t * esp,
- esp_gcm_nonce_t * nonce)
+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,
+ u8 *payload, u16 payload_len, u8 iv_sz, u8 icv_sz,
+ vlib_buffer_t **bufs, vlib_buffer_t **b,
+ vlib_buffer_t *lb, u32 hdr_len, esp_header_t *esp)
{
if (sa0->crypto_enc_op_id)
{
op->len = payload_len - icv_sz;
op->user_data = b - bufs;
- if (ipsec_sa_is_set_IS_AEAD (sa0))
+ if (ipsec_sa_is_set_IS_CTR (sa0))
{
- /*
- * construct the AAD in a scratch space in front
- * of the IP header.
- */
- op->aad = payload - hdr_len - sizeof (esp_aead_t);
- op->aad_len = esp_aad_fill (op->aad, esp, sa0);
-
- op->tag = payload + op->len;
- op->tag_len = 16;
+ 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);
+ op->tag = payload + op->len;
+ op->tag_len = 16;
+ }
+ else
+ {
+ nonce->ctr = clib_host_to_net_u32 (1);
+ }
- u64 *iv = (u64 *) (payload - iv_sz);
nonce->salt = sa0->salt;
- nonce->iv = *iv = clib_host_to_net_u64 (sa0->gcm_iv_counter++);
+ nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa0->ctr_iv_counter++);
op->iv = (u8 *) nonce;
}
else
crypto_total_len = integ_total_len = payload_len - icv_sz;
tag = payload + crypto_total_len;
- /* aead */
- if (ipsec_sa_is_set_IS_AEAD (sa))
- {
- esp_gcm_nonce_t *nonce;
- u64 *pkt_iv = (u64 *) (payload - iv_sz);
+ key_index = sa->linked_key_index;
- aad = payload - hdr_len - sizeof (esp_aead_t);
- esp_aad_fill (aad, esp, sa);
- nonce = (esp_gcm_nonce_t *) (aad - sizeof (*nonce));
- nonce->salt = sa->salt;
- nonce->iv = *pkt_iv = clib_host_to_net_u64 (sa->gcm_iv_counter++);
- iv = (u8 *) nonce;
- key_index = sa->crypto_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 (lb != b)
+ if (ipsec_sa_is_set_IS_AEAD (sa))
{
- /* 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);
+ /* constuct aad in a scratch space in front of the nonce */
+ aad = (u8 *) nonce - sizeof (esp_aead_t);
+ esp_aad_fill (aad, esp, sa);
+ key_index = sa->crypto_key_index;
+ }
+ else
+ {
+ nonce->ctr = clib_host_to_net_u32 (1);
}
- goto out;
- }
- /* cipher then hash */
- iv = payload - iv_sz;
- integ_start_offset = crypto_start_offset - iv_sz - sizeof (esp_header_t);
- integ_total_len += iv_sz + sizeof (esp_header_t);
- flag |= VNET_CRYPTO_OP_FLAG_INIT_IV;
- key_index = sa->linked_key_index;
+ 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 (b != lb)
+ if (lb != b)
{
+ /* chain */
flag |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS;
- crypto_total_len = esp_encrypt_chain_crypto (vm, ptd, sa, b, lb,
- icv_sz, payload,
- payload_len, 0);
tag = vlib_buffer_get_tail (lb) - icv_sz;
- 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);
+ crypto_total_len = esp_encrypt_chain_crypto (vm, ptd, sa, b, lb, icv_sz,
+ payload, payload_len, 0);
}
- else if (ipsec_sa_is_set_USE_ESN (sa) && !ipsec_sa_is_set_IS_AEAD (sa))
+
+ if (sa->integ_op_id)
{
- 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);
+ 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);
+ }
}
-out:
return vnet_crypto_async_add_to_frame (vm, async_frame, key_index,
crypto_total_len,
integ_total_len - crypto_total_len,
}
always_inline uword
-esp_encrypt_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * frame, int is_ip6, int is_tun,
+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)
{
ipsec_main_t *im = &ipsec_main;
u32 n_left = frame->n_vectors;
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
- esp_gcm_nonce_t nonces[VLIB_FRAME_SIZE], *nonce = nonces;
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;
vnet_crypto_async_frame_t *async_frame = 0;
int is_async = im->async_mode;
vnet_crypto_async_op_id_t last_async_op = ~0;
- u16 drop_next = (is_ip6 ? ESP_ENCRYPT_NEXT_DROP6 : ESP_ENCRYPT_NEXT_DROP4);
+ 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));
u16 n_async_drop = 0;
vlib_get_buffers (vm, from, b, n_left);
}
}
- if (PREDICT_FALSE (~0 == sa0->encrypt_thread_index))
+ 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->encrypt_thread_index, ~0,
+ clib_atomic_cmp_and_swap (&sa0->thread_index, ~0,
ipsec_sa_assign_thread (thread_index));
}
- if (PREDICT_FALSE (thread_index != sa0->encrypt_thread_index))
+ if (PREDICT_FALSE (thread_index != sa0->thread_index))
{
esp_set_next_index (is_async, from, nexts, from[b - bufs],
- &n_async_drop,
- (is_ip6 ? ESP_ENCRYPT_NEXT_HANDOFF6 :
- ESP_ENCRYPT_NEXT_HANDOFF4), next);
+ &n_async_drop, handoff_next, next);
goto trace;
}
ip6 = (ip6_header_t *) (payload - hdr_len);
clib_memcpy_fast (ip6, &sa0->ip6_hdr, sizeof (ip6_header_t));
- if (is_ip6)
+ 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
+ else if (VNET_LINK_IP4 == lt)
{
*next_hdr_ptr = IP_PROTOCOL_IP_IN_IP;
- tunnel_encap_fixup_4o6 (sa0->tunnel_flags,
- (const ip4_header_t *) payload,
- ip6);
+ 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 = (ip4_header_t *) (payload - hdr_len);
clib_memcpy_fast (ip4, &sa0->ip4_hdr, sizeof (ip4_header_t));
- if (is_ip6)
+ 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
+ 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);
}
u16 udp_len = 0;
u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
- ip_len = is_ip6 ?
- esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
- ip4_header_bytes ((ip4_header_t *) old_ip_hdr);
+ 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]);
else
l2_len = 0;
- if (is_ip6)
+ if (VNET_LINK_IP6 == lt)
{
ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
if (PREDICT_TRUE (NULL == ext_hdr))
clib_host_to_net_u16 (payload_len_total + hdr_len - l2_len -
sizeof (ip6_header_t));
}
- else
+ else if (VNET_LINK_IP4 == lt)
{
u16 len;
ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
{
esp_prepare_sync_op (vm, ptd, crypto_ops, integ_ops, sa0, payload,
payload_len, iv_sz, icv_sz, bufs, b, lb,
- hdr_len, esp, nonce++);
+ hdr_len, esp);
}
vlib_buffer_advance (b[0], 0LL - hdr_len);
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
- return esp_encrypt_inline (vm, node, from_frame, 0 /* is_ip6 */ , 0,
+ return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 0,
esp_encrypt_async_next.esp4_post_next);
}
.format_trace = format_esp_encrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
+ .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_HANDOFF4] = "esp4-encrypt-handoff",
- [ESP_ENCRYPT_NEXT_HANDOFF6] = "esp6-encrypt-handoff",
- [ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT] = "interface-output"
- },
+ .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_runtime_t * node,
vlib_frame_t * from_frame)
{
- return esp_encrypt_inline (vm, node, from_frame, 1 /* is_ip6 */ , 0,
+ return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 0,
esp_encrypt_async_next.esp6_post_next);
}
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
- return esp_encrypt_inline (vm, node, from_frame, 0 /* is_ip6 */ , 1,
+ return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP4, 1,
esp_encrypt_async_next.esp4_tun_post_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] = "error-drop",
+ [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_runtime_t * node,
vlib_frame_t * from_frame)
{
- return esp_encrypt_inline (vm, node, from_frame, 1 /* is_ip6 */ , 1,
+ return esp_encrypt_inline (vm, node, from_frame, VNET_LINK_IP6, 1,
esp_encrypt_async_next.esp6_tun_post_next);
}
.next_nodes = {
[ESP_ENCRYPT_NEXT_DROP4] = "ip4-drop",
[ESP_ENCRYPT_NEXT_DROP6] = "ip6-drop",
- [ESP_ENCRYPT_NEXT_HANDOFF4] = "error-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",
},
};
.vector_size = sizeof (u32),
.format_trace = format_esp_post_encrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
- .sibling_of = "esp6-encrypt-tun",
+ .sibling_of = "esp-mpls-encrypt-tun",
- .n_errors = ARRAY_LEN(esp_encrypt_error_strings),
+ .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,
+};
+
typedef struct
{
u32 sa_index;
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