/*
* esp_decrypt.c : IPSec ESP Decrypt node using DPDK Cryptodev
*
- * Copyright (c) 2016 Intel and/or its affiliates.
+ * Copyright (c) 2017 Intel 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:
+ * You may obtain a opy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
#include <vnet/ip/ip.h>
#include <vnet/ipsec/ipsec.h>
+#include <vnet/ipsec/esp.h>
#include <dpdk/ipsec/ipsec.h>
-#include <dpdk/ipsec/esp.h>
#include <dpdk/device/dpdk.h>
#include <dpdk/device/dpdk_priv.h>
#define foreach_esp_decrypt_next \
_(DROP, "error-drop") \
-_(IP4_INPUT, "ip4-input") \
+_(IP4_INPUT, "ip4-input-no-checksum") \
_(IP6_INPUT, "ip6-input")
#define _(v, s) ESP_DECRYPT_NEXT_##v,
_(REPLAY, "SA replayed packet") \
_(NOT_IP, "Not IP packet (dropped)") \
_(ENQ_FAIL, "Enqueue failed (buffer full)") \
- _(NO_CRYPTODEV, "Cryptodev not configured") \
+ _(DISCARD, "Not enough crypto operations, discarding frame") \
_(BAD_LEN, "Invalid ciphertext length") \
- _(UNSUPPORTED, "Cipher/Auth not supported")
+ _(SESSION, "Failed to get crypto session") \
+ _(NOSUP, "Cipher/Auth not supported")
typedef enum {
#undef _
};
-vlib_node_registration_t dpdk_esp_decrypt_node;
+extern vlib_node_registration_t dpdk_esp4_decrypt_node;
+extern vlib_node_registration_t dpdk_esp6_decrypt_node;
typedef struct {
ipsec_crypto_alg_t crypto_alg;
ipsec_integ_alg_t integ_alg;
+ u8 packet_data[64];
} esp_decrypt_trace_t;
/* packet trace format function */
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_decrypt_trace_t * t = va_arg (*args, esp_decrypt_trace_t *);
+ u32 indent = format_get_indent (s);
- s = format (s, "esp: crypto %U integrity %U",
+ s = format (s, "cipher %U auth %U\n",
format_ipsec_crypto_alg, t->crypto_alg,
format_ipsec_integ_alg, t->integ_alg);
+ s = format (s, "%U%U",
+ format_white_space, indent,
+ format_esp_header, t->packet_data);
return s;
}
-static uword
-dpdk_esp_decrypt_node_fn (vlib_main_t * vm,
+always_inline uword
+dpdk_esp_decrypt_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
+ vlib_frame_t * from_frame,
+ int is_ip6)
{
u32 n_left_from, *from, *to_next, next_index;
ipsec_main_t *im = &ipsec_main;
- u32 cpu_index = os_get_cpu_number();
- dpdk_crypto_main_t * dcm = &dpdk_crypto_main;
- dpdk_esp_main_t * em = &dpdk_esp_main;
- u32 i;
+ u32 thread_idx = vlib_get_thread_index();
+ dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
+ crypto_resource_t *res = 0;
+ ipsec_sa_t *sa0 = 0;
+ crypto_alg_t *cipher_alg = 0, *auth_alg = 0;
+ struct rte_cryptodev_sym_session *session = 0;
+ u32 ret, last_sa_index = ~0;
+ u8 numa = rte_socket_id ();
+ u8 is_aead = 0;
+ crypto_worker_main_t *cwm =
+ vec_elt_at_index (dcm->workers_main, thread_idx);
+ struct rte_crypto_op **ops = cwm->ops;
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
- if (PREDICT_FALSE(!dcm->workers_main))
+ ret = crypto_alloc_ops (numa, ops, n_left_from);
+ if (ret)
{
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_NO_CRYPTODEV, n_left_from);
- vlib_buffer_free(vm, from, n_left_from);
+ if(is_ip6)
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DISCARD, 1);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DISCARD, 1);
+ /* Discard whole frame */
return n_left_from;
}
- crypto_worker_main_t *cwm = vec_elt_at_index(dcm->workers_main, cpu_index);
- u32 n_qps = vec_len(cwm->qp_data);
- struct rte_crypto_op ** cops_to_enq[n_qps];
- u32 n_cop_qp[n_qps], * bi_to_enq[n_qps];
-
- for (i = 0; i < n_qps; i++)
- {
- bi_to_enq[i] = cwm->qp_data[i].bi;
- cops_to_enq[i] = cwm->qp_data[i].cops;
- }
-
- memset(n_cop_qp, 0, n_qps * sizeof(u32));
-
- crypto_alloc_cops();
-
next_index = ESP_DECRYPT_NEXT_DROP;
while (n_left_from > 0)
while (n_left_from > 0 && n_left_to_next > 0)
{
- u32 bi0, sa_index0 = ~0, seq, icv_size, iv_size;
- vlib_buffer_t * b0;
- esp_header_t * esp0;
- ipsec_sa_t * sa0;
- struct rte_mbuf * mb0 = 0;
- const int BLOCK_SIZE = 16;
- crypto_sa_session_t * sa_sess;
- void * sess;
- u16 qp_index;
- struct rte_crypto_op * cop = 0;
+ clib_error_t *error;
+ u32 bi0, sa_index0, seq, iv_size;
+ u8 trunc_size;
+ vlib_buffer_t *b0;
+ esp_header_t *esp0;
+ struct rte_mbuf *mb0;
+ struct rte_crypto_op *op;
+ u16 res_idx;
bi0 = from[0];
from += 1;
n_left_from -= 1;
b0 = vlib_get_buffer (vm, bi0);
+ mb0 = rte_mbuf_from_vlib_buffer(b0);
esp0 = vlib_buffer_get_current (b0);
- sa_index0 = vnet_buffer(b0)->ipsec.sad_index;
- sa0 = pool_elt_at_index (im->sad, sa_index0);
+ /* ih0/ih6_0 */
+ CLIB_PREFETCH (esp0, sizeof (esp0[0]) + 16, LOAD);
+ /* mb0 */
+ CLIB_PREFETCH (mb0, CLIB_CACHE_LINE_BYTES, STORE);
- seq = clib_host_to_net_u32(esp0->seq);
+ op = ops[0];
+ ops += 1;
+ ASSERT (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED);
- /* anti-replay check */
- if (sa0->use_anti_replay)
+ dpdk_op_priv_t *priv = crypto_op_get_priv (op);
+
+ u16 op_len =
+ sizeof (op[0]) + sizeof (op[0].sym[0]) + sizeof (priv[0]);
+ CLIB_PREFETCH (op, op_len, STORE);
+
+ sa_index0 = vnet_buffer(b0)->ipsec.sad_index;
+
+ if (sa_index0 != last_sa_index)
{
- int rv = 0;
+ sa0 = pool_elt_at_index (im->sad, sa_index0);
- if (PREDICT_TRUE(sa0->use_esn))
- rv = esp_replay_check_esn(sa0, seq);
- else
- rv = esp_replay_check(sa0, seq);
+ cipher_alg = vec_elt_at_index (dcm->cipher_algs, sa0->crypto_alg);
+ auth_alg = vec_elt_at_index (dcm->auth_algs, sa0->integ_alg);
+
+ is_aead = (cipher_alg->type == RTE_CRYPTO_SYM_XFORM_AEAD);
+ if (is_aead)
+ auth_alg = cipher_alg;
- if (PREDICT_FALSE(rv))
+ res_idx = get_resource (cwm, sa0);
+
+ if (PREDICT_FALSE (res_idx == (u16) ~0))
{
- clib_warning ("anti-replay SPI %u seq %u", sa0->spi, seq);
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_REPLAY, 1);
+ clib_warning ("unsupported SA by thread index %u", thread_idx);
+ if(is_ip6)
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_NOSUP, 1);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_NOSUP, 1);
to_next[0] = bi0;
to_next += 1;
n_left_to_next -= 1;
goto trace;
}
- }
+ res = vec_elt_at_index (dcm->resource, res_idx);
- sa0->total_data_size += b0->current_length;
+ error = crypto_get_session (&session, sa_index0, res, cwm, 0);
+ if (PREDICT_FALSE (error || !session))
+ {
+ clib_warning ("failed to get crypto session");
+ if(is_ip6)
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_SESSION, 1);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_SESSION, 1);
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+ goto trace;
+ }
- if (PREDICT_FALSE(sa0->integ_alg == IPSEC_INTEG_ALG_NONE) ||
- PREDICT_FALSE(sa0->crypto_alg == IPSEC_CRYPTO_ALG_NONE))
- {
- clib_warning ("SPI %u : only cipher + auth supported", sa0->spi);
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_UNSUPPORTED, 1);
- to_next[0] = bi0;
- to_next += 1;
- n_left_to_next -= 1;
- goto trace;
+ last_sa_index = sa_index0;
}
- sa_sess = pool_elt_at_index(cwm->sa_sess_d[0], sa_index0);
-
- if (PREDICT_FALSE(!sa_sess->sess))
+ /* anti-replay check */
+ if (sa0->use_anti_replay)
{
- int ret = create_sym_sess(sa0, sa_sess, 0);
+ int rv = 0;
+
+ seq = clib_net_to_host_u32 (esp0->seq);
- if (PREDICT_FALSE (ret))
+ if (PREDICT_TRUE(sa0->use_esn))
+ rv = esp_replay_check_esn (sa0, seq);
+ else
+ rv = esp_replay_check (sa0, seq);
+
+ if (PREDICT_FALSE (rv))
{
+ clib_warning ("failed anti-replay check");
+ if(is_ip6)
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_REPLAY, 1);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_REPLAY, 1);
to_next[0] = bi0;
to_next += 1;
n_left_to_next -= 1;
}
}
- sess = sa_sess->sess;
- qp_index = sa_sess->qp_index;
-
- ASSERT (vec_len (vec_elt (cwm->qp_data, qp_index).free_cops) > 0);
- cop = vec_pop (vec_elt (cwm->qp_data, qp_index).free_cops);
- ASSERT (cop->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED);
-
- cops_to_enq[qp_index][0] = cop;
- cops_to_enq[qp_index] += 1;
- n_cop_qp[qp_index] += 1;
- bi_to_enq[qp_index][0] = bi0;
- bi_to_enq[qp_index] += 1;
+ if(is_ip6)
+ priv->next = DPDK_CRYPTO_INPUT_NEXT_DECRYPT6_POST;
+ else
+ priv->next = DPDK_CRYPTO_INPUT_NEXT_DECRYPT4_POST;
- rte_crypto_op_attach_sym_session(cop, sess);
+ /* FIXME multi-seg */
+ sa0->total_data_size += b0->current_length;
- icv_size = em->esp_integ_algs[sa0->integ_alg].trunc_size;
- iv_size = em->esp_crypto_algs[sa0->crypto_alg].iv_len;
+ res->ops[res->n_ops] = op;
+ res->bi[res->n_ops] = bi0;
+ res->n_ops += 1;
/* Convert vlib buffer to mbuf */
- mb0 = rte_mbuf_from_vlib_buffer(b0);
mb0->data_len = b0->current_length;
mb0->pkt_len = b0->current_length;
mb0->data_off = RTE_PKTMBUF_HEADROOM + b0->current_data;
+ trunc_size = auth_alg->trunc_size;
+ iv_size = cipher_alg->iv_len;
+
/* Outer IP header has already been stripped */
- u16 payload_len = rte_pktmbuf_pkt_len(mb0) - sizeof (esp_header_t) -
- iv_size - icv_size;
+ u16 payload_len =
+ b0->current_length - sizeof (esp_header_t) - iv_size - trunc_size;
+
+ ASSERT (payload_len >= 4);
- if ((payload_len & (BLOCK_SIZE - 1)) || (payload_len <= 0))
+ if (payload_len & (cipher_alg->boundary - 1))
{
clib_warning ("payload %u not multiple of %d\n",
- payload_len, BLOCK_SIZE);
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
+ payload_len, cipher_alg->boundary);
+ if(is_ip6)
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_BAD_LEN, 1);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
ESP_DECRYPT_ERROR_BAD_LEN, 1);
- vec_add (vec_elt (cwm->qp_data, qp_index).free_cops, &cop, 1);
- bi_to_enq[qp_index] -= 1;
- cops_to_enq[qp_index] -= 1;
- n_cop_qp[qp_index] -= 1;
+ res->n_ops -= 1;
to_next[0] = bi0;
to_next += 1;
n_left_to_next -= 1;
goto trace;
}
- struct rte_crypto_sym_op *sym_cop = (struct rte_crypto_sym_op *)(cop + 1);
+ u32 cipher_off, cipher_len;
+ u32 auth_len = 0;
+ u8 *aad = NULL;
- sym_cop->m_src = mb0;
- sym_cop->cipher.data.offset = sizeof (esp_header_t) + iv_size;
- sym_cop->cipher.data.length = payload_len;
+ u8 *iv = (u8 *) (esp0 + 1);
- u8 *iv = rte_pktmbuf_mtod_offset(mb0, void*, sizeof (esp_header_t));
- dpdk_cop_priv_t * priv = (dpdk_cop_priv_t *)(sym_cop + 1);
+ dpdk_gcm_cnt_blk *icb = &priv->cb;
- if (sa0->crypto_alg == IPSEC_CRYPTO_ALG_AES_GCM_128)
- {
- dpdk_gcm_cnt_blk *icb = &priv->cb;
- icb->salt = sa0->salt;
- clib_memcpy(icb->iv, iv, 8);
- icb->cnt = clib_host_to_net_u32(1);
- sym_cop->cipher.iv.data = (u8 *)icb;
- sym_cop->cipher.iv.phys_addr = cop->phys_addr +
- (uintptr_t)icb - (uintptr_t)cop;
- sym_cop->cipher.iv.length = 16;
-
- u8 *aad = priv->aad;
- clib_memcpy(aad, iv - sizeof(esp_header_t), 8);
- sym_cop->auth.aad.data = aad;
- sym_cop->auth.aad.phys_addr = cop->phys_addr +
- (uintptr_t)aad - (uintptr_t)cop;
- if (sa0->use_esn)
- {
- *((u32*)&aad[8]) = sa0->seq_hi;
- sym_cop->auth.aad.length = 12;
- }
- else
- {
- sym_cop->auth.aad.length = 8;
- }
+ cipher_off = sizeof (esp_header_t) + iv_size;
+ cipher_len = payload_len;
+
+ u8 *digest = vlib_buffer_get_tail (b0) - trunc_size;
+ u64 digest_paddr =
+ mb0->buf_physaddr + digest - ((u8 *) mb0->buf_addr);
+
+ if (!is_aead && cipher_alg->alg == RTE_CRYPTO_CIPHER_AES_CBC)
+ clib_memcpy_fast(icb, iv, 16);
+ else /* CTR/GCM */
+ {
+ u32 *_iv = (u32 *) iv;
- sym_cop->auth.digest.data = rte_pktmbuf_mtod_offset(mb0, void*,
- rte_pktmbuf_pkt_len(mb0) - icv_size);
- sym_cop->auth.digest.phys_addr = rte_pktmbuf_mtophys_offset(mb0,
- rte_pktmbuf_pkt_len(mb0) - icv_size);
- sym_cop->auth.digest.length = icv_size;
+ crypto_set_icb (icb, sa0->salt, _iv[0], _iv[1]);
+ }
+ if (is_aead)
+ {
+ aad = priv->aad;
+ u32 * _aad = (u32 *) aad;
+ clib_memcpy_fast (aad, esp0, 8);
+
+ /* _aad[3] should always be 0 */
+ if (PREDICT_FALSE (sa0->use_esn))
+ _aad[2] = clib_host_to_net_u32 (sa0->seq_hi);
+ else
+ _aad[2] = 0;
}
else
{
- sym_cop->cipher.iv.data = rte_pktmbuf_mtod_offset(mb0, void*,
- sizeof (esp_header_t));
- sym_cop->cipher.iv.phys_addr = rte_pktmbuf_mtophys_offset(mb0,
- sizeof (esp_header_t));
- sym_cop->cipher.iv.length = iv_size;
+ auth_len = sizeof(esp_header_t) + iv_size + payload_len;
if (sa0->use_esn)
{
- dpdk_cop_priv_t* priv = (dpdk_cop_priv_t*) (sym_cop + 1);
- u8* payload_end = rte_pktmbuf_mtod_offset(
- mb0, u8*, sizeof(esp_header_t) + iv_size + payload_len);
-
- clib_memcpy (priv->icv, payload_end, icv_size);
- *((u32*) payload_end) = sa0->seq_hi;
- sym_cop->auth.data.offset = 0;
- sym_cop->auth.data.length = sizeof(esp_header_t) + iv_size
- + payload_len + sizeof(sa0->seq_hi);
- sym_cop->auth.digest.data = priv->icv;
- sym_cop->auth.digest.phys_addr = cop->phys_addr
- + (uintptr_t) priv->icv - (uintptr_t) cop;
- sym_cop->auth.digest.length = icv_size;
- }
- else
- {
- sym_cop->auth.data.offset = 0;
- sym_cop->auth.data.length = sizeof(esp_header_t) +
- iv_size + payload_len;
-
- sym_cop->auth.digest.data = rte_pktmbuf_mtod_offset(mb0, void*,
- rte_pktmbuf_pkt_len(mb0) - icv_size);
- sym_cop->auth.digest.phys_addr = rte_pktmbuf_mtophys_offset(mb0,
- rte_pktmbuf_pkt_len(mb0) - icv_size);
- sym_cop->auth.digest.length = icv_size;
+ clib_memcpy_fast (priv->icv, digest, trunc_size);
+ u32 *_digest = (u32 *) digest;
+ _digest[0] = clib_host_to_net_u32 (sa0->seq_hi);
+ auth_len += sizeof(sa0->seq_hi);
+
+ digest = priv->icv;
+ digest_paddr =
+ op->phys_addr + (uintptr_t) priv->icv - (uintptr_t) op;
}
}
+ crypto_op_setup (is_aead, mb0, op, session, cipher_off, cipher_len,
+ 0, auth_len, aad, digest, digest_paddr);
trace:
if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
{
esp_decrypt_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->crypto_alg = sa0->crypto_alg;
tr->integ_alg = sa0->integ_alg;
+ clib_memcpy_fast (tr->packet_data, vlib_buffer_get_current (b0),
+ sizeof (esp_header_t));
}
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_RX_PKTS,
- from_frame->n_vectors);
- crypto_qp_data_t *qpd;
- /* *INDENT-OFF* */
- vec_foreach_index (i, cwm->qp_data)
- {
- u32 enq;
- qpd = vec_elt_at_index(cwm->qp_data, i);
- enq = rte_cryptodev_enqueue_burst(qpd->dev_id, qpd->qp_id,
- qpd->cops, n_cop_qp[i]);
- qpd->inflights += enq;
+ if(is_ip6){
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
- if (PREDICT_FALSE(enq < n_cop_qp[i]))
- {
- crypto_free_cop (qpd, &qpd->cops[enq], n_cop_qp[i] - enq);
- vlib_buffer_free (vm, &qpd->bi[enq], n_cop_qp[i] - enq);
+ crypto_enqueue_ops (vm, cwm, 0, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_ENQ_FAIL, numa);
+ }
+ else
+ {
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_ENQ_FAIL,
- n_cop_qp[i] - enq);
- }
+ crypto_enqueue_ops (vm, cwm, 0, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_ENQ_FAIL, numa);
}
- /* *INDENT-ON* */
+
+ crypto_free_ops (numa, ops, cwm->ops + from_frame->n_vectors - ops);
return from_frame->n_vectors;
}
-VLIB_REGISTER_NODE (dpdk_esp_decrypt_node) = {
- .function = dpdk_esp_decrypt_node_fn,
- .name = "dpdk-esp-decrypt",
+VLIB_NODE_FN(dpdk_esp4_decrypt_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return dpdk_esp_decrypt_inline(vm, node, from_frame, 0 /*is_ip6*/);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dpdk_esp4_decrypt_node) = {
+ .name = "dpdk-esp4-decrypt",
.vector_size = sizeof (u32),
.format_trace = format_esp_decrypt_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
#undef _
},
};
+/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (dpdk_esp_decrypt_node, dpdk_esp_decrypt_node_fn)
+VLIB_NODE_FN(dpdk_esp6_decrypt_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return dpdk_esp_decrypt_inline(vm, node, from_frame, 1 /*is_ip6*/);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dpdk_esp6_decrypt_node) = {
+ .name = "dpdk-esp6-decrypt",
+ .vector_size = sizeof (u32),
+ .format_trace = format_esp_decrypt_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(esp_decrypt_error_strings),
+ .error_strings = esp_decrypt_error_strings,
+
+ .n_next_nodes = ESP_DECRYPT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [ESP_DECRYPT_NEXT_##s] = n,
+ foreach_esp_decrypt_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
/*
* Decrypt Post Node
#undef _
};
-vlib_node_registration_t dpdk_esp_decrypt_post_node;
+extern vlib_node_registration_t dpdk_esp4_decrypt_post_node;
+extern vlib_node_registration_t dpdk_esp6_decrypt_post_node;
static u8 * format_esp_decrypt_post_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_decrypt_trace_t * t = va_arg (*args, esp_decrypt_trace_t *);
+ u32 indent = format_get_indent (s);
+
+ s = format (s, "cipher %U auth %U\n",
+ format_ipsec_crypto_alg, t->crypto_alg,
+ format_ipsec_integ_alg, t->integ_alg);
+
+ ip4_header_t *ih4 = (ip4_header_t *) t->packet_data;
+ if ((ih4->ip_version_and_header_length & 0xF0) == 0x60)
+ s = format (s, "%U%U", format_white_space, indent, format_ip6_header, ih4);
+ else
+ s = format (s, "%U%U", format_white_space, indent, format_ip4_header, ih4);
+
return s;
}
-static uword
-dpdk_esp_decrypt_post_node_fn (vlib_main_t * vm,
+always_inline uword
+dpdk_esp_decrypt_post_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
+ vlib_frame_t * from_frame,
+ int is_ip6)
{
u32 n_left_from, *from, *to_next = 0, next_index;
ipsec_sa_t * sa0;
u32 sa_index0 = ~0;
ipsec_main_t *im = &ipsec_main;
- dpdk_esp_main_t *em = &dpdk_esp_main;
+ dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
while (n_left_from > 0 && n_left_to_next > 0)
{
esp_footer_t * f0;
- u32 bi0, next0, icv_size, iv_size;
+ u32 bi0, iv_size, next0;
vlib_buffer_t * b0 = 0;
ip4_header_t *ih4 = 0, *oh4 = 0;
ip6_header_t *ih6 = 0, *oh6 = 0;
- u8 tunnel_mode = 1;
- u8 transport_ip6 = 0;
+ crypto_alg_t *cipher_alg, *auth_alg;
+ esp_header_t *esp0;
+ u8 trunc_size, is_aead;
+ u16 udp_encap_adv = 0;
next0 = ESP_DECRYPT_NEXT_DROP;
n_left_to_next -= 1;
b0 = vlib_get_buffer (vm, bi0);
+ esp0 = vlib_buffer_get_current (b0);
sa_index0 = vnet_buffer(b0)->ipsec.sad_index;
sa0 = pool_elt_at_index (im->sad, sa_index0);
to_next[0] = bi0;
to_next += 1;
- icv_size = em->esp_integ_algs[sa0->integ_alg].trunc_size;
- iv_size = em->esp_crypto_algs[sa0->crypto_alg].iv_len;
+ cipher_alg = vec_elt_at_index (dcm->cipher_algs, sa0->crypto_alg);
+ auth_alg = vec_elt_at_index (dcm->auth_algs, sa0->integ_alg);
+ is_aead = cipher_alg->type == RTE_CRYPTO_SYM_XFORM_AEAD;
+ if (is_aead)
+ auth_alg = cipher_alg;
+
+ trunc_size = auth_alg->trunc_size;
+
+ iv_size = cipher_alg->iv_len;
if (sa0->use_anti_replay)
{
- esp_header_t * esp0 = vlib_buffer_get_current (b0);
u32 seq;
seq = clib_host_to_net_u32(esp0->seq);
if (PREDICT_TRUE(sa0->use_esn))
esp_replay_advance(sa0, seq);
}
- ih4 = (ip4_header_t *) (b0->data + sizeof(ethernet_header_t));
- vlib_buffer_advance (b0, sizeof (esp_header_t) + iv_size);
+ /* if UDP encapsulation is used adjust the address of the IP header */
+ if (sa0->udp_encap && (b0->flags & VNET_BUFFER_F_IS_IP4))
+ {
+ udp_encap_adv = sizeof (udp_header_t);
+ }
- b0->current_length -= (icv_size + 2);
- b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
- f0 = (esp_footer_t *) ((u8 *) vlib_buffer_get_current (b0) +
- b0->current_length);
- b0->current_length -= f0->pad_length;
+ if (b0->flags & VNET_BUFFER_F_IS_IP4)
+ ih4 = (ip4_header_t *)
+ ((u8 *) esp0 - udp_encap_adv - sizeof (ip4_header_t));
+ else
+ ih4 =
+ (ip4_header_t *) ((u8 *) esp0 - sizeof (ip6_header_t));
- /* transport mode */
- if (PREDICT_FALSE(!sa0->is_tunnel && !sa0->is_tunnel_ip6))
- {
- tunnel_mode = 0;
+ vlib_buffer_advance (b0, sizeof (esp_header_t) + iv_size);
- if (PREDICT_TRUE((ih4->ip_version_and_header_length & 0xF0) != 0x40))
- {
- if (PREDICT_TRUE((ih4->ip_version_and_header_length & 0xF0) == 0x60))
- transport_ip6 = 1;
- else
- {
- clib_warning("next header: 0x%x", f0->next_header);
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_NOT_IP, 1);
- goto trace;
- }
- }
+ b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ f0 = (esp_footer_t *) (vlib_buffer_get_tail (b0) - trunc_size - 2);
+ b0->current_length -= (f0->pad_length + trunc_size + 2);
+#if 0
+ /* check padding */
+ const u8 *padding = vlib_buffer_get_tail (b0);
+ if (PREDICT_FALSE (memcmp (padding, pad_data, f0->pad_length)))
+ {
+ clib_warning("bad padding");
+ vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ goto trace;
}
-
- if (PREDICT_TRUE (tunnel_mode))
+#endif
+ if (sa0->is_tunnel)
{
- if (PREDICT_TRUE(f0->next_header == IP_PROTOCOL_IP_IN_IP))
+ if (f0->next_header == IP_PROTOCOL_IP_IN_IP)
next0 = ESP_DECRYPT_NEXT_IP4_INPUT;
- else if (f0->next_header == IP_PROTOCOL_IPV6)
+ else if (sa0->is_tunnel_ip6 && f0->next_header == IP_PROTOCOL_IPV6)
next0 = ESP_DECRYPT_NEXT_IP6_INPUT;
else
{
clib_warning("next header: 0x%x", f0->next_header);
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
+ if(is_ip6)
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
1);
goto trace;
}
}
- /* transport mode */
- else
+ else /* transport mode */
{
- if (PREDICT_FALSE(transport_ip6))
+ if ((ih4->ip_version_and_header_length & 0xF0) == 0x40)
{
- ih6 = (ip6_header_t *) (b0->data + sizeof(ethernet_header_t));
+ u16 ih4_len = ip4_header_bytes (ih4);
+ vlib_buffer_advance (b0, - ih4_len - udp_encap_adv);
+ next0 = ESP_DECRYPT_NEXT_IP4_INPUT;
+ if (!sa0->udp_encap)
+ {
+ oh4 = vlib_buffer_get_current (b0);
+ memmove(oh4, ih4, ih4_len);
+ oh4->protocol = f0->next_header;
+ oh4->length = clib_host_to_net_u16 (b0->current_length);
+ oh4->checksum = ip4_header_checksum(oh4);
+ }
+ }
+ else if ((ih4->ip_version_and_header_length & 0xF0) == 0x60)
+ {
+ ih6 = (ip6_header_t *) ih4;
vlib_buffer_advance (b0, -sizeof(ip6_header_t));
oh6 = vlib_buffer_get_current (b0);
memmove(oh6, ih6, sizeof(ip6_header_t));
next0 = ESP_DECRYPT_NEXT_IP6_INPUT;
oh6->protocol = f0->next_header;
- oh6->payload_length =
- clib_host_to_net_u16 (
- vlib_buffer_length_in_chain(vm, b0) -
- sizeof (ip6_header_t));
+ u16 len = b0->current_length - sizeof (ip6_header_t);
+ oh6->payload_length = clib_host_to_net_u16 (len);
}
else
{
- vlib_buffer_advance (b0, -sizeof(ip4_header_t));
- oh4 = vlib_buffer_get_current (b0);
- memmove(oh4, ih4, sizeof(ip4_header_t));
-
- next0 = ESP_DECRYPT_NEXT_IP4_INPUT;
- oh4->ip_version_and_header_length = 0x45;
- oh4->fragment_id = 0;
- oh4->flags_and_fragment_offset = 0;
- oh4->protocol = f0->next_header;
- oh4->length = clib_host_to_net_u16 (
- vlib_buffer_length_in_chain (vm, b0));
- oh4->checksum = ip4_header_checksum (oh4);
+ clib_warning("next header: 0x%x", f0->next_header);
+ if(is_ip6)
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ goto trace;
}
}
vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32)~0;
-trace:
+ trace:
if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
{
esp_decrypt_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->crypto_alg = sa0->crypto_alg;
tr->integ_alg = sa0->integ_alg;
+ ih4 = vlib_buffer_get_current (b0);
+ clib_memcpy_fast (tr->packet_data, ih4, sizeof (ip6_header_t));
}
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_post_node.index,
+
+ if(is_ip6)
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_post_node.index,
+ ESP_DECRYPT_POST_ERROR_PKTS,
+ from_frame->n_vectors);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_post_node.index,
ESP_DECRYPT_POST_ERROR_PKTS,
from_frame->n_vectors);
return from_frame->n_vectors;
}
-VLIB_REGISTER_NODE (dpdk_esp_decrypt_post_node) = {
- .function = dpdk_esp_decrypt_post_node_fn,
- .name = "dpdk-esp-decrypt-post",
+VLIB_NODE_FN(dpdk_esp4_decrypt_post_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{return dpdk_esp_decrypt_post_inline(vm, node, from_frame, 0/*is_ip6*/);}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dpdk_esp4_decrypt_post_node) = {
+ .name = "dpdk-esp4-decrypt-post",
+ .vector_size = sizeof (u32),
+ .format_trace = format_esp_decrypt_post_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(esp_decrypt_post_error_strings),
+ .error_strings = esp_decrypt_post_error_strings,
+
+ .n_next_nodes = ESP_DECRYPT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [ESP_DECRYPT_NEXT_##s] = n,
+ foreach_esp_decrypt_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FN(dpdk_esp6_decrypt_post_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return dpdk_esp_decrypt_post_inline(vm, node, from_frame, 0/*is_ip6*/);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dpdk_esp6_decrypt_post_node) = {
+ .name = "dpdk-esp6-decrypt-post",
.vector_size = sizeof (u32),
.format_trace = format_esp_decrypt_post_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
#undef _
},
};
+/* *INDENT-ON* */
-VLIB_NODE_FUNCTION_MULTIARCH (dpdk_esp_decrypt_post_node, dpdk_esp_decrypt_post_node_fn)
Code Review / vpp.git / blobdiff