--- /dev/null
+# Copyright (c) 2018 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.
+
+find_path(IPSECMB_INCLUDE_DIR NAMES intel-ipsec-mb.h HINTS ${IPSECMB_INCLUDE_DIR_HINT})
+find_library(IPSECMB_LIB NAMES libIPSec_MB.a HINTS ${IPSECMB_LIB_DIR_HINT})
+
+if(IPSECMB_INCLUDE_DIR AND IPSECMB_LIB)
+
+ get_filename_component(IPSECMB_LIB_DIR ${IPSECMB_LIB} DIRECTORY)
+ set(IPSECMB_LINK_FLAGS "${IPSECMB_LINK_FLAGS} -L${IPSECMB_LIB_DIR} -Wl,--whole-archive ${IPSECMB_LIB} -Wl,--no-whole-archive")
+ set(IPSECMB_LINK_FLAGS "${IPSECMB_LINK_FLAGS} -Wl,--exclude-libs,libIPSec_MB.a,-l:libIPSec_MB.a")
+ include_directories(${IPSECMB_INCLUDE_DIR})
+ add_vpp_plugin(ipsecmb
+ SOURCES
+ ipsecmb.c
+ ah_encrypt.c
+ ah_decrypt.c
+ esp_encrypt.c
+ esp_decrypt.c
+
+ MULTIARCH_SOURCES
+ ah_encrypt.c
+ ah_decrypt.c
+ esp_encrypt.c
+ esp_decrypt.c
+
+ LINK_FLAGS
+ ${IPSECMB_LINK_FLAGS}
+ )
+
+ message(STATUS "Intel IPSecMB found: ${IPSECMB_INCLUDE_DIR}")
+else()
+ message(STATUS "Intel IPSecMB not found")
+endif()
+
+
--- /dev/null
+/*
+ * ah_decrypt.c : ipsecmb AH decrypt 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/ipsec/ipsec.h>
+#include <vnet/ipsec/esp.h>
+#include <vnet/ipsec/ah.h>
+
+#include <ipsecmb/ipsecmb.h>
+
+#define foreach_ah_decrypt_next \
+ _ (DROP, "error-drop") \
+ _ (IP4_INPUT, "ip4-input") \
+ _ (IP6_INPUT, "ip6-input") \
+ _ (IPSEC_GRE_INPUT, "ipsec-gre-input")
+
+#define _(v, s) AH_DECRYPT_NEXT_##v,
+typedef enum
+{
+ foreach_ah_decrypt_next
+#undef _
+ AH_DECRYPT_N_NEXT,
+} ah_decrypt_next_t;
+
+#define foreach_ah_decrypt_error \
+ _ (RX_PKTS, "AH pkts received") \
+ _ (DECRYPTION_FAILED, "AH decryption failed") \
+ _ (INTEG_ERROR, "Integrity check failed") \
+ _ (REPLAY, "SA replayed packet") \
+ _ (NOT_IP, "Not IP packet (dropped)")
+
+typedef enum
+{
+#define _(sym, str) AH_DECRYPT_ERROR_##sym,
+ foreach_ah_decrypt_error
+#undef _
+ AH_DECRYPT_N_ERROR,
+} ah_decrypt_error_t;
+
+static char *ah_decrypt_error_strings[] = {
+#define _(sym, string) string,
+ foreach_ah_decrypt_error
+#undef _
+};
+
+typedef struct
+{
+ ipsec_integ_alg_t integ_alg;
+} ah_decrypt_trace_t;
+
+/* packet trace format function */
+static u8 *
+format_ah_decrypt_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 *);
+ ah_decrypt_trace_t *t = va_arg (*args, ah_decrypt_trace_t *);
+
+ s = format (s, "ah: integrity %U", format_ipsec_integ_alg, t->integ_alg);
+ return s;
+}
+
+typedef struct
+{
+ u8 tos;
+ u8 ttl;
+ u32 ip_version_traffic_class_and_flow_label;
+ u8 hop_limit;
+} ip_mutable_data_t;
+
+#ifdef CLIB_MARCH_VARIANT
+always_inline void
+remove_ah (vlib_main_t * vm, vlib_node_runtime_t * node, u32 * bi0,
+ u32 * next0, ipsec_sa_t * sa0, u32 ip_hdr_size, u32 icv_size,
+ u8 icv_padding_len, ah_header_t * ah0, int is_ip6)
+{
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, *bi0);
+
+ if (sa0->is_tunnel)
+ { /* tunnel mode */
+ vlib_buffer_advance (b0, ip_hdr_size + sizeof (ah_header_t) + icv_size +
+ icv_padding_len);
+ if (ah0->nexthdr == IP_PROTOCOL_IP_IN_IP)
+ *next0 = AH_DECRYPT_NEXT_IP4_INPUT;
+ else if (ah0->nexthdr == IP_PROTOCOL_IPV6)
+ *next0 = AH_DECRYPT_NEXT_IP6_INPUT;
+ else
+ {
+ clib_warning ("next header: 0x%x", ah0->nexthdr);
+ vlib_node_increment_counter (vm, node->node_index,
+ AH_DECRYPT_ERROR_DECRYPTION_FAILED, 1);
+ *next0 = AH_DECRYPT_NEXT_DROP;
+ return;
+ }
+ }
+ else
+ { /* transport mode */
+ const size_t ip_hdr_offset =
+ sizeof (ah_header_t) + icv_size + icv_padding_len;
+ if (is_ip6)
+ { /* ipv6 */
+ ip6_header_t *ih6 =
+ (ip6_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
+ ip_hdr_offset);
+ u8 nexthdr = ah0->nexthdr;
+ memmove (ih6, vlib_buffer_get_current (b0), sizeof (ip6_header_t));
+ vlib_buffer_advance (b0, ip_hdr_offset);
+
+ *next0 = AH_DECRYPT_NEXT_IP6_INPUT;
+ ih6->protocol = nexthdr;
+ ih6->payload_length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
+ sizeof (ip6_header_t));
+ }
+ else
+ { /* ipv4 */
+ ip4_header_t *ih4 =
+ (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
+ ip_hdr_offset);
+ u8 nexthdr = ah0->nexthdr;
+ memmove (ih4, vlib_buffer_get_current (b0), sizeof (ip4_header_t));
+ vlib_buffer_advance (b0, ip_hdr_offset);
+
+ *next0 = AH_DECRYPT_NEXT_IP4_INPUT;
+ ih4->ip_version_and_header_length = 0x45;
+ ih4->fragment_id = 0;
+ ih4->flags_and_fragment_offset = 0;
+ ih4->protocol = nexthdr;
+ ih4->length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
+ ih4->checksum = ip4_header_checksum (ih4);
+ }
+ }
+
+ /* for IPSec-GRE tunnel next node is ipsec-gre-input */
+ if (PREDICT_FALSE
+ ((vnet_buffer (b0)->ipsec.flags & IPSEC_FLAG_IPSEC_GRE_TUNNEL)))
+ {
+ *next0 = AH_DECRYPT_NEXT_IPSEC_GRE_INPUT;
+ }
+}
+
+always_inline void
+ah_finish_decrypt (vlib_main_t * vm, vlib_node_runtime_t * node,
+ JOB_AES_HMAC * job, u32 * bi0, u32 * next0, int is_ip6)
+{
+ ipsec_main_t *im = &ipsec_main;
+ *bi0 = (uintptr_t) job->user_data;
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, *bi0);
+ ipsec_sa_t *sa0 =
+ pool_elt_at_index (im->sad, vnet_buffer (b0)->ipsec.sad_index);
+ ipsec_proto_main_t *em = &ipsec_proto_main;
+ u32 icv_size = em->ipsec_proto_main_integ_algs[sa0->integ_alg].trunc_size;
+ u32 ip_hdr_size = 0;
+ ip4_header_t *ih4 = vlib_buffer_get_current (b0);
+ size_t seq_size = 0;
+ if (PREDICT_TRUE (sa0->use_esn))
+ {
+ seq_size = sizeof (u32);
+ }
+ ip_mutable_data_t *md =
+ (ip_mutable_data_t *) ((u8 *) vlib_buffer_get_current (b0) +
+ b0->current_length + seq_size + icv_size);
+ if (is_ip6)
+ {
+ ip_hdr_size = sizeof (ip6_header_t);
+ ip6_header_t *ih6 = vlib_buffer_get_current (b0);
+ ih6->ip_version_traffic_class_and_flow_label =
+ md->ip_version_traffic_class_and_flow_label;
+ ih6->hop_limit = md->hop_limit;
+ }
+ else
+ {
+ ip_hdr_size = ip4_header_bytes (ih4);
+ ih4->ttl = md->ttl;
+ ih4->tos = md->tos;
+ }
+
+ u8 icv_padding_len = ah_calc_icv_padding_len (icv_size, is_ip6);
+ ah_header_t *ah0 =
+ (ah_header_t *) ((u8 *) vlib_buffer_get_current (b0) + ip_hdr_size);
+ void *digest = ah0 + 1;
+ void *sig = vlib_buffer_get_current (b0) + b0->current_length + seq_size;
+
+ if (PREDICT_FALSE (memcmp (digest, sig, icv_size)))
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ AH_DECRYPT_ERROR_INTEG_ERROR, 1);
+ *next0 = AH_DECRYPT_NEXT_DROP;
+ return;
+ }
+
+ if (PREDICT_TRUE (sa0->use_anti_replay))
+ {
+ if (PREDICT_TRUE (sa0->use_esn))
+ esp_replay_advance_esn (sa0, clib_host_to_net_u32 (ah0->seq_no));
+ else
+ esp_replay_advance (sa0, clib_host_to_net_u32 (ah0->seq_no));
+ }
+ remove_ah (vm, node, bi0, next0, sa0, ip_hdr_size, icv_size,
+ icv_padding_len, ah0, is_ip6);
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+}
+
+always_inline uword
+ah_decrypt_ipsecmb_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, int is_ip6)
+{
+ u32 n_left_from, *from, next_index, *to_next;
+ ipsec_main_t *im = &ipsec_main;
+ ipsecmb_main_t *imbm = &ipsecmb_main;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+ int icv_size = 0;
+ u32 thread_index = vlib_get_thread_index ();
+ MB_MGR *mgr = imbm->mb_mgr[thread_index];
+ u32 packets_in_flight = 0;
+
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0 || packets_in_flight > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ u32 next0;
+ vlib_buffer_t *b0;
+ ah_header_t *ah0;
+ ipsec_sa_t *sa0;
+ ipsecmb_sa_t *samb0;
+ u32 sa_index0 = ~0;
+ u32 seq;
+ ip4_header_t *ih4 = 0;
+ ip6_header_t *ih6 = 0;
+ u8 ip_hdr_size = 0;
+
+ bi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+
+ next0 = AH_DECRYPT_NEXT_DROP;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ ih4 = vlib_buffer_get_current (b0);
+ ih6 = vlib_buffer_get_current (b0);
+
+ sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
+ sa0 = pool_elt_at_index (im->sad, sa_index0);
+ samb0 = pool_elt_at_index (imbm->sad, sa_index0);
+
+ if (is_ip6)
+ {
+ ip6_ext_header_t *prev = NULL;
+ ip6_ext_header_find_t (ih6, prev, ah0, IP_PROTOCOL_IPSEC_AH);
+ ip_hdr_size = sizeof (ip6_header_t);
+ ASSERT ((u8 *) ah0 - (u8 *) ih6 == ip_hdr_size);
+ }
+ else
+ {
+ ip_hdr_size = ip4_header_bytes (ih4);
+ ah0 = (ah_header_t *) (ih4 + 1);
+ }
+
+ seq = clib_host_to_net_u32 (ah0->seq_no);
+ /* anti-replay check */
+ // TODO UT remaining
+ if (sa0->use_anti_replay)
+ {
+ int rv = 0;
+
+ 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 ("anti-replay SPI %u seq %u", sa0->spi, seq);
+ vlib_node_increment_counter (vm, node->node_index,
+ AH_DECRYPT_ERROR_REPLAY, 1);
+ goto trace;
+ }
+ }
+
+ sa0->total_data_size += b0->current_length;
+ icv_size =
+ em->ipsec_proto_main_integ_algs[sa0->integ_alg].trunc_size;
+ if (PREDICT_TRUE (sa0->integ_alg != IPSEC_INTEG_ALG_NONE))
+ {
+ u8 *icv = (u8 *) vlib_buffer_get_current (b0) + ip_hdr_size +
+ sizeof (ah_header_t);
+ size_t seq_size = 0;
+ if (PREDICT_TRUE (sa0->use_esn))
+ {
+ *(u32 *) (vlib_buffer_get_current (b0) +
+ b0->current_length) = sa0->seq_hi;
+ seq_size = sizeof (u32);
+ }
+ clib_memcpy (vlib_buffer_get_current (b0) + b0->current_length +
+ seq_size, icv, icv_size);
+ memset (icv, 0, icv_size);
+
+ ip_mutable_data_t *md =
+ (ip_mutable_data_t *) ((u8 *) vlib_buffer_get_current (b0) +
+ b0->current_length + seq_size +
+ icv_size);
+ if (is_ip6)
+ {
+ md->ip_version_traffic_class_and_flow_label =
+ ih6->ip_version_traffic_class_and_flow_label;
+ md->hop_limit = ih6->hop_limit;
+ ih6->ip_version_traffic_class_and_flow_label = 0x60;
+ ih6->hop_limit = 0;
+ }
+ else
+ {
+ md->tos = ih4->tos;
+ md->ttl = ih4->ttl;
+ ih4->tos = 0;
+ ih4->ttl = 0;
+ ih4->checksum = 0;
+ ih4->flags_and_fragment_offset = 0;
+ }
+
+ JOB_AES_HMAC *job = IPSECMB_FUNC (get_next_job) (mgr);
+ job->src = vlib_buffer_get_current (b0);
+ job->hash_start_src_offset_in_bytes = 0;
+ job->cipher_mode = NULL_CIPHER;
+ job->hash_alg = imbm->integ_algs[sa0->integ_alg].hash_alg;
+ job->auth_tag_output_len_in_bytes =
+ imbm->integ_algs[sa0->integ_alg].hash_output_length;
+ job->auth_tag_output = icv;
+ job->msg_len_to_hash_in_bytes = b0->current_length + seq_size;
+ job->cipher_direction = DECRYPT;
+ job->chain_order = HASH_CIPHER;
+ job->u.HMAC._hashed_auth_key_xor_ipad = samb0->ipad_hash;
+ job->u.HMAC._hashed_auth_key_xor_opad = samb0->opad_hash;
+
+ job->user_data = (void *) (uintptr_t) bi0;
+ job->user_data2 = (void *) (uintptr_t) next0;
+ vnet_buffer (b0)->ipsec.sad_index = sa_index0;
+ job = IPSECMB_FUNC (submit_job) (mgr);
+ ++packets_in_flight;
+
+ if (!job)
+ {
+ continue;
+ }
+ --packets_in_flight;
+ ASSERT (STS_COMPLETED == job->status);
+ ah_finish_decrypt (vm, node, job, &bi0, &next0, is_ip6);
+ }
+ else
+ {
+ remove_ah (vm, node, &bi0, &next0, sa0, ip_hdr_size, icv_size,
+ 0, ah0, is_ip6);
+ }
+ trace:
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ b0->flags |= VLIB_BUFFER_IS_TRACED;
+ ah_decrypt_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->integ_alg = sa0->integ_alg;
+ }
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+
+ if (0 == n_left_from)
+ {
+ JOB_AES_HMAC *job = NULL;
+ while (n_left_to_next > 0 && (job = IPSECMB_FUNC (flush_job) (mgr)))
+ {
+ --packets_in_flight;
+ ASSERT (STS_COMPLETED == job->status);
+ u32 bi0, next0;
+ ah_finish_decrypt (vm, node, job, &bi0, &next0, is_ip6);
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ipsec_sa_t *sa0 = pool_elt_at_index (im->sad,
+ vnet_buffer
+ (b0)->ipsec.sad_index);
+ b0->flags |= VLIB_BUFFER_IS_TRACED;
+ ah_decrypt_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->integ_alg = sa0->integ_alg;
+ }
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ vlib_node_increment_counter (vm, node->node_index, AH_DECRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+
+ return from_frame->n_vectors;
+}
+
+VLIB_NODE_FN (ah4_decrypt_ipsecmb_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return ah_decrypt_ipsecmb_inline (vm, node, from_frame, 0 /*is_ip6 */ );
+}
+
+VLIB_NODE_FN (ah6_decrypt_ipsecmb_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return ah_decrypt_ipsecmb_inline (vm, node, from_frame, 1 /*is_ip6 */ );
+}
+#endif
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ah4_decrypt_ipsecmb_node) = {
+ .name = "ah4-decrypt-ipsecmb",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ah_decrypt_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN (ah_decrypt_error_strings),
+ .error_strings = ah_decrypt_error_strings,
+
+ .n_next_nodes = AH_DECRYPT_N_NEXT,
+ .next_nodes =
+ {
+#define _(s, n) [AH_DECRYPT_NEXT_##s] = n,
+ foreach_ah_decrypt_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ah6_decrypt_ipsecmb_node) = {
+ .name = "ah6-decrypt-ipsecmb",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ah_decrypt_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN (ah_decrypt_error_strings),
+ .error_strings = ah_decrypt_error_strings,
+
+ .n_next_nodes = AH_DECRYPT_N_NEXT,
+ .next_nodes =
+ {
+#define _(s, n) [AH_DECRYPT_NEXT_##s] = n,
+ foreach_ah_decrypt_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * ah_encrypt.c : ipsecmb AH 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/ipsec/ipsec.h>
+#include <vnet/ipsec/esp.h>
+#include <vnet/ipsec/ah.h>
+
+#include <ipsecmb/ipsecmb.h>
+
+#define foreach_ah_encrypt_next \
+_(DROP, "error-drop") \
+_(IP4_LOOKUP, "ip4-lookup") \
+_(IP6_LOOKUP, "ip6-lookup") \
+_(INTERFACE_OUTPUT, "interface-output")
+
+#define _(v, s) AH_ENCRYPT_NEXT_##v,
+typedef enum
+{
+ foreach_ah_encrypt_next
+#undef _
+ AH_ENCRYPT_N_NEXT,
+} ah_encrypt_next_t;
+
+#define foreach_ah_encrypt_error \
+ _(RX_PKTS, "AH pkts received") \
+ _(SEQ_CYCLED, "sequence number cycled")
+
+
+typedef enum
+{
+#define _(sym,str) AH_ENCRYPT_ERROR_##sym,
+ foreach_ah_encrypt_error
+#undef _
+ AH_ENCRYPT_N_ERROR,
+} ah_encrypt_error_t;
+
+static char *ah_encrypt_error_strings[] = {
+#define _(sym,string) string,
+ foreach_ah_encrypt_error
+#undef _
+};
+
+typedef struct
+{
+ u32 spi;
+ u32 seq;
+ ipsec_integ_alg_t integ_alg;
+} ah_encrypt_trace_t;
+
+/* packet trace format function */
+static u8 *
+format_ah_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 *);
+ ah_encrypt_trace_t *t = va_arg (*args, ah_encrypt_trace_t *);
+
+ s = format (s, "ah: spi %u seq %u integrity %U",
+ t->spi, t->seq, format_ipsec_integ_alg, t->integ_alg);
+ return s;
+}
+
+#ifdef CLIB_MARCH_VARIANT
+always_inline void
+ah_finish_encrypt (vlib_main_t * vm, vlib_buffer_t * b0, ipsec_sa_t * sa0,
+ int is_ip6)
+{
+ if (is_ip6)
+ {
+ ip6_header_t *oh6 = 0;
+ oh6 = vlib_buffer_get_current (b0);
+ oh6->ip_version_traffic_class_and_flow_label =
+ vnet_buffer (b0)->ipsec.ip_version_traffic_class_and_flow_label;
+ oh6->hop_limit = vnet_buffer (b0)->ipsec.ttl_or_hop_limit;
+ }
+ else
+ {
+ ip4_header_t *oh4 = 0;
+ oh4 = vlib_buffer_get_current (b0);
+ oh4->ttl = vnet_buffer (b0)->ipsec.ttl_or_hop_limit;
+ oh4->tos = vnet_buffer (b0)->ipsec.tos;
+ oh4->checksum = ip4_header_checksum (oh4);
+ }
+}
+
+always_inline uword
+ah_encrypt_ipsecmb_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;
+ int icv_size = 0;
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+ ipsec_main_t *im = &ipsec_main;
+ ipsecmb_main_t *imbm = &ipsecmb_main;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
+ next_index = node->cached_next_index;
+ u32 thread_index = vlib_get_thread_index ();
+ MB_MGR *mgr = imbm->mb_mgr[thread_index];
+ u32 packets_in_flight = 0;
+
+ while (n_left_from > 0 || packets_in_flight > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0, next0;
+ vlib_buffer_t *b0 = 0;
+ u32 sa_index0;
+ ipsec_sa_t *sa0;
+ ipsecmb_sa_t *samb0;
+ ip4_header_t *ih4, *oh4 = 0;
+ ip6_header_t *ih6, *oh6 = 0;
+ ah_header_t *ah = 0;
+ u8 next_hdr_type;
+ u8 transport_mode = 0;
+
+ bi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+
+ next0 = AH_ENCRYPT_NEXT_DROP;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
+ sa0 = pool_elt_at_index (im->sad, sa_index0);
+ samb0 = pool_elt_at_index (imbm->sad, sa_index0);
+
+ if (PREDICT_FALSE (esp_seq_advance (sa0)))
+ {
+ clib_warning ("sequence number counter has cycled SPI %u",
+ sa0->spi);
+ vlib_node_increment_counter (vm, node->node_index,
+ AH_ENCRYPT_ERROR_SEQ_CYCLED, 1);
+ to_next[0] = bi0;
+ to_next += 1;
+ goto trace;
+ }
+
+
+ sa0->total_data_size += b0->current_length;
+
+ ssize_t adv;
+ ih4 = vlib_buffer_get_current (b0);
+
+ if (PREDICT_TRUE (sa0->is_tunnel))
+ {
+ if (!is_ip6)
+ adv = -sizeof (ip4_and_ah_header_t);
+ else
+ adv = -sizeof (ip6_and_ah_header_t);
+ }
+ else
+ {
+ adv = -sizeof (ah_header_t);
+ }
+
+ const u8 padding_len = ah_calc_icv_padding_len (icv_size, is_ip6);
+ adv -= padding_len;
+
+ icv_size =
+ em->ipsec_proto_main_integ_algs[sa0->integ_alg].trunc_size;
+ /* transport mode save the eth header before it is overwritten */
+ if (PREDICT_FALSE (!sa0->is_tunnel))
+ {
+ ethernet_header_t *ieh0 = (ethernet_header_t *)
+ ((u8 *) vlib_buffer_get_current (b0) -
+ sizeof (ethernet_header_t));
+ ethernet_header_t *oeh0 =
+ (ethernet_header_t *) ((u8 *) ieh0 + (adv - icv_size));
+ clib_memcpy (oeh0, ieh0, sizeof (ethernet_header_t));
+ }
+
+ vlib_buffer_advance (b0, adv - icv_size);
+
+ if (is_ip6)
+ {
+ ih6 = (ip6_header_t *) ih4;
+ oh6 = vlib_buffer_get_current (b0);
+ ah = (ah_header_t *) (oh6 + 1);
+ vnet_buffer (b0)->ipsec.ttl_or_hop_limit = ih6->hop_limit;
+ vnet_buffer (b0)->
+ ipsec.ip_version_traffic_class_and_flow_label =
+ ih6->ip_version_traffic_class_and_flow_label;
+
+ if (PREDICT_TRUE (sa0->is_tunnel))
+ {
+ next_hdr_type = IP_PROTOCOL_IPV6;
+ }
+ else
+ {
+ next_hdr_type = ih6->protocol;
+ memmove (oh6, ih6, sizeof (ip6_header_t));
+ }
+
+ oh6->protocol = IP_PROTOCOL_IPSEC_AH;
+ oh6->ip_version_traffic_class_and_flow_label = 0x60;
+ oh6->hop_limit = 0;
+ ah->reserved = 0;
+ ah->nexthdr = next_hdr_type;
+ ah->spi = clib_net_to_host_u32 (sa0->spi);
+ ah->seq_no = clib_net_to_host_u32 (sa0->seq);
+ ah->hdrlen =
+ (sizeof (ah_header_t) + icv_size + padding_len) / 4 - 2;
+ oh6->payload_length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
+ sizeof (ip6_header_t));
+ }
+ else
+ {
+ oh4 = vlib_buffer_get_current (b0);
+ memset (oh4, 0, sizeof (*oh4));
+ ah = (ah_header_t *) (oh4 + 1);
+ memset (ah, 0, sizeof (*ah));
+ vnet_buffer (b0)->ipsec.ttl_or_hop_limit = ih4->ttl;
+ vnet_buffer (b0)->ipsec.tos = ih4->tos;
+
+ if (PREDICT_TRUE (sa0->is_tunnel))
+ {
+ next_hdr_type = IP_PROTOCOL_IP_IN_IP;
+ }
+ else
+ {
+ next_hdr_type = ih4->protocol;
+ memmove (oh4, ih4, sizeof (ip4_header_t));
+ }
+
+ oh4->length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
+ oh4->ip_version_and_header_length = 0x45;
+ oh4->fragment_id = 0;
+ oh4->flags_and_fragment_offset = 0;
+ oh4->ttl = 0;
+ oh4->tos = 0;
+ oh4->protocol = IP_PROTOCOL_IPSEC_AH;
+ ah->spi = clib_net_to_host_u32 (sa0->spi);
+ ah->seq_no = clib_net_to_host_u32 (sa0->seq);
+ oh4->checksum = 0;
+ ah->nexthdr = next_hdr_type;
+ ah->hdrlen =
+ (sizeof (ah_header_t) + icv_size + padding_len) / 4 - 2;
+ }
+
+ if (PREDICT_TRUE (!is_ip6 && sa0->is_tunnel && !sa0->is_tunnel_ip6))
+ {
+ oh4->src_address.as_u32 = sa0->tunnel_src_addr.ip4.as_u32;
+ oh4->dst_address.as_u32 = sa0->tunnel_dst_addr.ip4.as_u32;
+
+ next0 = AH_ENCRYPT_NEXT_IP4_LOOKUP;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ }
+ else if (is_ip6 && sa0->is_tunnel && sa0->is_tunnel_ip6)
+ {
+ oh6->src_address.as_u64[0] = sa0->tunnel_src_addr.ip6.as_u64[0];
+ oh6->src_address.as_u64[1] = sa0->tunnel_src_addr.ip6.as_u64[1];
+ oh6->dst_address.as_u64[0] = sa0->tunnel_dst_addr.ip6.as_u64[0];
+ oh6->dst_address.as_u64[1] = sa0->tunnel_dst_addr.ip6.as_u64[1];
+ next0 = AH_ENCRYPT_NEXT_IP6_LOOKUP;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ }
+ else
+ {
+ transport_mode = 1;
+ }
+
+ memset (ah + 1, 0, icv_size);
+
+ JOB_AES_HMAC *job = IPSECMB_FUNC (get_next_job) (mgr);
+ job->src = vlib_buffer_get_current (b0);
+ job->hash_start_src_offset_in_bytes = 0;
+ job->cipher_mode = NULL_CIPHER;
+ job->hash_alg = imbm->integ_algs[sa0->integ_alg].hash_alg;
+ job->auth_tag_output_len_in_bytes =
+ imbm->integ_algs[sa0->integ_alg].hash_output_length;
+ job->auth_tag_output = (u8 *) (ah + 1);
+ if (PREDICT_TRUE (sa0->use_esn))
+ {
+ *(u32 *) (vlib_buffer_get_current (b0) + b0->current_length) =
+ sa0->seq_hi;
+ b0->current_length += sizeof (u32);
+ }
+ job->msg_len_to_hash_in_bytes = b0->current_length;
+ job->cipher_direction = ENCRYPT;
+ job->chain_order = HASH_CIPHER;
+ job->u.HMAC._hashed_auth_key_xor_ipad = samb0->ipad_hash;
+ job->u.HMAC._hashed_auth_key_xor_opad = samb0->opad_hash;
+
+
+ job->user_data = (void *) (uintptr_t) bi0;
+ job->user_data2 = (void *) (uintptr_t) next0;
+ vnet_buffer (b0)->ipsec.sad_index = sa_index0;
+
+ job = IPSECMB_FUNC (submit_job) (mgr);
+ ++packets_in_flight;
+
+ if (!job)
+ {
+ continue;
+ }
+
+ --packets_in_flight;
+ ASSERT (STS_COMPLETED == job->status);
+ bi0 = (uintptr_t) job->user_data;
+ next0 = (uintptr_t) job->user_data2;
+ b0 = vlib_get_buffer (vm, bi0);
+ sa0 =
+ pool_elt_at_index (im->sad, vnet_buffer (b0)->ipsec.sad_index);
+ ah_finish_encrypt (vm, b0, sa0, is_ip6);
+ if (!sa0->is_tunnel && !sa0->is_tunnel_ip6)
+ {
+ next0 = AH_ENCRYPT_NEXT_INTERFACE_OUTPUT;
+ vlib_buffer_advance (b0, -sizeof (ethernet_header_t));
+ }
+
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ trace:
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ah_encrypt_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->spi = sa0->spi;
+ tr->seq = sa0->seq - 1;
+ tr->integ_alg = sa0->integ_alg;
+ }
+
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next, bi0,
+ next0);
+ }
+
+ if (PREDICT_FALSE (n_left_from == 0))
+ {
+ JOB_AES_HMAC *job = NULL;
+ while (n_left_to_next > 0 && (job = IPSECMB_FUNC (flush_job) (mgr)))
+ {
+ --packets_in_flight;
+ u32 bi0, next0;
+ vlib_buffer_t *b0;
+ ipsec_sa_t *sa0;
+
+ ASSERT (STS_COMPLETED == job->status);
+ bi0 = (uintptr_t) job->user_data;
+ next0 = (uintptr_t) job->user_data2;
+ b0 = vlib_get_buffer (vm, bi0);
+ sa0 =
+ pool_elt_at_index (im->sad,
+ vnet_buffer (b0)->ipsec.sad_index);
+ ah_finish_encrypt (vm, b0, sa0, is_ip6);
+ if (!sa0->is_tunnel && !sa0->is_tunnel_ip6)
+ {
+ next0 = AH_ENCRYPT_NEXT_INTERFACE_OUTPUT;
+ vlib_buffer_advance (b0, -sizeof (ethernet_header_t));
+ }
+
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ah_encrypt_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->spi = sa0->spi;
+ tr->seq = sa0->seq - 1;
+ tr->integ_alg = sa0->integ_alg;
+ }
+
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next, bi0,
+ next0);
+ }
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ vlib_node_increment_counter (vm, node->node_index, AH_ENCRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+
+ return from_frame->n_vectors;
+}
+
+VLIB_NODE_FN (ah4_encrypt_ipsecmb_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return ah_encrypt_ipsecmb_inline (vm, node, from_frame, 0 /*is_ip6 */ );
+}
+
+VLIB_NODE_FN (ah6_encrypt_ipsecmb_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return ah_encrypt_ipsecmb_inline (vm, node, from_frame, 1 /*is_ip6 */ );
+}
+
+#endif
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ah4_encrypt_ipsecmb_node) = {
+ .name = "ah4-encrypt-ipsecmb",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ah_encrypt_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(ah_encrypt_error_strings),
+ .error_strings = ah_encrypt_error_strings,
+
+ .n_next_nodes = AH_ENCRYPT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [AH_ENCRYPT_NEXT_##s] = n,
+ foreach_ah_encrypt_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ah6_encrypt_ipsecmb_node) = {
+ .name = "ah6-encrypt-ipsecmb",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ah_encrypt_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(ah_encrypt_error_strings),
+ .error_strings = ah_encrypt_error_strings,
+
+ .n_next_nodes = AH_ENCRYPT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [AH_ENCRYPT_NEXT_##s] = n,
+ foreach_ah_encrypt_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * esp_decrypt.c : ipsecmb ESP decrypt 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/ipsec/ipsec.h>
+#include <vnet/ipsec/esp.h>
+#include <ipsecmb/ipsecmb.h>
+
+#define foreach_esp_decrypt_next \
+_(DROP, "error-drop") \
+_(IP4_INPUT, "ip4-input") \
+_(IP6_INPUT, "ip6-input") \
+_(IPSEC_GRE_INPUT, "ipsec-gre-input")
+
+#define _(v, s) ESP_DECRYPT_NEXT_##v,
+typedef enum
+{
+ foreach_esp_decrypt_next
+#undef _
+ ESP_DECRYPT_N_NEXT,
+} esp_decrypt_next_t;
+
+
+#define foreach_esp_decrypt_error \
+ _(RX_PKTS, "ESP pkts received") \
+ _(NO_BUFFER, "No buffer (packed dropped)") \
+ _(DECRYPTION_FAILED, "ESP decryption failed") \
+ _(INTEG_ERROR, "Integrity check failed") \
+ _(REPLAY, "SA replayed packet") \
+ _(NOT_IP, "Not IP packet (dropped)")
+
+typedef enum
+{
+#define _(sym,str) ESP_DECRYPT_ERROR_##sym,
+ foreach_esp_decrypt_error
+#undef _
+ ESP_DECRYPT_N_ERROR,
+} esp_decrypt_error_t;
+
+static char *esp_decrypt_error_strings[] = {
+#define _(sym,string) string,
+ foreach_esp_decrypt_error
+#undef _
+};
+
+typedef struct
+{
+ ipsec_crypto_alg_t crypto_alg;
+ ipsec_integ_alg_t integ_alg;
+} esp_decrypt_trace_t;
+
+/* packet trace format function */
+static u8 *
+format_esp_decrypt_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 *);
+
+ s = format (s, "esp: crypto %U integrity %U",
+ format_ipsec_crypto_alg, t->crypto_alg,
+ format_ipsec_integ_alg, t->integ_alg);
+ return s;
+}
+
+#ifdef CLIB_MARCH_VARIANT
+always_inline void
+esp_finish_decrypt (vlib_main_t * vm, vlib_node_runtime_t * node,
+ JOB_AES_HMAC * job, u32 * next0, ipsec_sa_t * sa0,
+ int is_ip6)
+{
+ u32 bi0 = (uintptr_t) job->user_data;
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
+ esp_footer_t *f0;
+ ip4_header_t *ih4 = vlib_buffer_get_current (b0);
+ ip6_header_t *ih6 = vlib_buffer_get_current (b0);
+
+ if (NULL_HASH != job->hash_alg)
+ {
+ if (0 !=
+ memcmp (job->auth_tag_output,
+ job->auth_tag_output - job->auth_tag_output_len_in_bytes,
+ job->auth_tag_output_len_in_bytes))
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ ESP_DECRYPT_ERROR_INTEG_ERROR, 1);
+ *next0 = ESP_DECRYPT_NEXT_DROP;
+ return;
+ }
+ }
+
+ f0 = (esp_footer_t *) ((u8 *) vlib_buffer_get_current (b0) +
+ b0->current_length);
+ b0->current_length -= f0->pad_length;
+
+ /* tunnel mode */
+ if (sa0->is_tunnel)
+ {
+ if (f0->next_header == IP_PROTOCOL_IP_IN_IP)
+ {
+ *next0 = ESP_DECRYPT_NEXT_IP4_INPUT;
+ }
+ else if (f0->next_header == IP_PROTOCOL_IPV6)
+ {
+ *next0 = ESP_DECRYPT_NEXT_IP6_INPUT;
+ }
+ else
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ *next0 = ESP_DECRYPT_NEXT_DROP;
+ return;
+ }
+ }
+ /* transport mode */
+ else
+ {
+ if (is_ip6)
+ {
+ *next0 = ESP_DECRYPT_NEXT_IP6_INPUT;
+ ih6->protocol = f0->next_header;
+ ih6->payload_length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
+ sizeof (ip6_header_t));
+ }
+ else
+ {
+ *next0 = ESP_DECRYPT_NEXT_IP4_INPUT;
+ ih4->fragment_id = 0;
+ ih4->flags_and_fragment_offset = 0;
+ ih4->protocol = f0->next_header;
+ ih4->length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
+ ih4->checksum = ip4_header_checksum (ih4);
+ }
+ }
+
+ /* for IPSec-GRE tunnel next node is ipsec-gre-input */
+ if ((vnet_buffer (b0)->ipsec.flags & IPSEC_FLAG_IPSEC_GRE_TUNNEL))
+ {
+ *next0 = ESP_DECRYPT_NEXT_IPSEC_GRE_INPUT;
+ }
+
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ if (sa0->use_anti_replay)
+ {
+ if (sa0->use_esn)
+ esp_replay_advance_esn (sa0, vnet_buffer (b0)->ipsec.seq);
+ else
+ esp_replay_advance (sa0, vnet_buffer (b0)->ipsec.seq);
+ }
+}
+
+always_inline uword
+esp_decrypt_ipsecmb_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, int is_ip6)
+{
+ u32 n_left_from, *from, next_index, *to_next;
+ u32 packets_in_flight = 0;
+ ipsec_main_t *im = &ipsec_main;
+ ipsecmb_main_t *imbm = &ipsecmb_main;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+ u32 thread_index = vlib_get_thread_index ();
+ MB_MGR *mgr = imbm->mb_mgr[thread_index];
+ u32 *to_be_freed = NULL;
+
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0 || packets_in_flight > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0, next0;
+ vlib_buffer_t *b0;
+ esp_header_t *esp0;
+ ipsec_sa_t *sa0;
+ ipsecmb_sa_t *samb0;
+ u32 sa_index0 = ~0;
+ u32 seq;
+
+ bi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+
+ next0 = ESP_DECRYPT_NEXT_DROP;
+
+ 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);
+ samb0 = pool_elt_at_index (imbm->sad, sa_index0);
+
+ vnet_buffer (b0)->ipsec.seq = seq =
+ clib_host_to_net_u32 (esp0->seq);
+
+ /* anti-replay check */
+ if (sa0->use_anti_replay)
+ {
+ int rv = 0;
+
+ if (sa0->use_esn)
+ rv = esp_replay_check_esn (sa0, seq);
+ else
+ rv = esp_replay_check (sa0, seq);
+
+ if (PREDICT_FALSE (rv))
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ ESP_DECRYPT_ERROR_REPLAY, 1);
+ goto trace;
+ }
+ }
+
+ sa0->total_data_size += b0->current_length;
+
+ if (PREDICT_FALSE (b0->n_add_refs > 0))
+ {
+ vec_add1 (to_be_freed, bi0);
+ b0 = vlib_buffer_copy (vm, b0);
+ bi0 = vlib_get_buffer_index (vm, b0);
+ }
+
+ JOB_AES_HMAC *job = IPSECMB_FUNC (get_next_job) (mgr);
+ int trunc_size = 0;
+ if (sa0->integ_alg != IPSEC_INTEG_ALG_NONE)
+ {
+ trunc_size =
+ em->ipsec_proto_main_integ_algs[sa0->integ_alg].trunc_size;
+ // put calculated auth tag after in-packet auth tag
+ job->auth_tag_output =
+ vlib_buffer_get_current (b0) + b0->current_length;
+ b0->current_length -= trunc_size;
+ job->msg_len_to_hash_in_bytes = b0->current_length;
+ job->auth_tag_output_len_in_bytes = trunc_size;
+ job->u.HMAC._hashed_auth_key_xor_ipad = samb0->ipad_hash;
+ job->u.HMAC._hashed_auth_key_xor_opad = samb0->opad_hash;
+ }
+
+ job->hash_alg = imbm->integ_algs[sa0->integ_alg].hash_alg;
+ u8 ip_hdr_size = 0;
+
+ if ((sa0->crypto_alg >= IPSEC_CRYPTO_ALG_AES_CBC_128 &&
+ sa0->crypto_alg <= IPSEC_CRYPTO_ALG_AES_CBC_256) ||
+ (sa0->crypto_alg >= IPSEC_CRYPTO_ALG_DES_CBC &&
+ sa0->crypto_alg <= IPSEC_CRYPTO_ALG_3DES_CBC))
+ {
+ 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 =
+ (b0->current_length - sizeof (esp_header_t) -
+ iv_size) / block_size;
+ if (b0->current_length - sizeof (esp_header_t) - iv_size <
+ block_size || blocks <= 0)
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ ESP_DECRYPT_ERROR_INTEG_ERROR,
+ 1);
+ goto trace;
+ }
+
+ /* transport mode */
+ if (!sa0->is_tunnel)
+ {
+ if (b0->flags & VNET_BUFFER_F_L3_HDR_OFFSET_VALID)
+ {
+ if (is_ip6)
+ {
+ ip_hdr_size = sizeof (ip6_header_t);
+ }
+ else
+ {
+ ip_hdr_size = sizeof (ip4_header_t);
+ }
+ }
+ else
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ ESP_DECRYPT_ERROR_NOT_IP,
+ 1);
+ goto trace;
+ }
+ }
+
+ job->chain_order = HASH_CIPHER;
+ job->cipher_direction = DECRYPT;
+ job->src = (u8 *) esp0;
+ job->dst = (u8 *) esp0;
+ vlib_buffer_advance (b0, -ip_hdr_size);
+ job->cipher_mode =
+ imbm->crypto_algs[sa0->crypto_alg].cipher_mode;
+ job->aes_enc_key_expanded = samb0->aes_enc_key_expanded;
+ job->aes_dec_key_expanded = samb0->aes_dec_key_expanded;
+ job->aes_key_len_in_bytes = sa0->crypto_key_len;
+ job->iv = esp0->data;
+ job->iv_len_in_bytes = iv_size;
+ job->msg_len_to_cipher_in_bytes = blocks * block_size;
+ job->cipher_start_src_offset_in_bytes =
+ sizeof (esp_header_t) + iv_size;
+ job->hash_start_src_offset_in_bytes = 0;
+
+ job->user_data = (void *) (uintptr_t) bi0;
+ job->user_data2 = sa0;
+ b0->current_length =
+ (blocks * block_size) - sizeof (esp_footer_t) + ip_hdr_size;
+ ASSERT ((u8 *) vlib_buffer_get_current (b0) +
+ b0->current_length < job->auth_tag_output);
+ b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+
+ job = IPSECMB_FUNC (submit_job) (mgr);
+ ++packets_in_flight;
+
+ if (!job)
+ {
+ continue;
+ }
+
+ --packets_in_flight;
+
+ sa0 = job->user_data2;
+ bi0 = (uintptr_t) job->user_data;
+ b0 = vlib_get_buffer (vm, bi0);
+ esp_finish_decrypt (vm, node, job, &next0, sa0, is_ip6);
+
+ trace:
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ 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;
+ }
+
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+ }
+
+ if (PREDICT_FALSE (n_left_from == 0 && packets_in_flight > 0))
+ {
+ JOB_AES_HMAC *job = NULL;
+ while (n_left_to_next > 0 && (job = IPSECMB_FUNC (flush_job) (mgr)))
+ {
+ --packets_in_flight;
+ u32 bi0, next0;
+ bi0 = (uintptr_t) job->user_data;
+ vlib_buffer_t *i_b0 = vlib_get_buffer (vm, bi0);
+
+ ipsec_sa_t *sa0 = job->user_data2;
+ esp_finish_decrypt (vm, node, job, &next0, sa0, is_ip6);
+
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ if (PREDICT_FALSE (i_b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ esp_decrypt_trace_t *tr =
+ vlib_add_trace (vm, node, i_b0, sizeof (*tr));
+ tr->crypto_alg = sa0->crypto_alg;
+ tr->integ_alg = sa0->integ_alg;
+ }
+
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ vlib_node_increment_counter (vm, node->node_index,
+ ESP_DECRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+
+ if (to_be_freed)
+ vlib_buffer_free (vm, to_be_freed, vec_len (to_be_freed));
+ vec_free (to_be_freed);
+ return from_frame->n_vectors;
+}
+
+VLIB_NODE_FN (esp4_decrypt_ipsecmb_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return esp_decrypt_ipsecmb_inline (vm, node, from_frame, 0 /*is_ip6 */ );
+}
+
+VLIB_NODE_FN (esp6_decrypt_ipsecmb_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return esp_decrypt_ipsecmb_inline (vm, node, from_frame, 1 /*is_ip6 */ );
+}
+#endif
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (esp4_decrypt_ipsecmb_node) = {
+ .name = "esp4-decrypt-ipsecmb",
+ .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* */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (esp6_decrypt_ipsecmb_node) = {
+ .name = "esp6-decrypt-ipsecmb",
+ .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* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * esp_encrypt.c : ipsecmb 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/udp/udp.h>
+
+#include <vnet/ipsec/ipsec.h>
+#include <vnet/ipsec/esp.h>
+
+#include <ipsecmb/ipsecmb.h>
+
+#define foreach_esp_encrypt_next \
+ _ (DROP, "error-drop") \
+ _ (IP4_LOOKUP, "ip4-lookup") \
+ _ (IP6_LOOKUP, "ip6-lookup") \
+ _ (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") \
+ _ (NO_BUFFER, "No buffer (packet dropped)") \
+ _ (DECRYPTION_FAILED, "ESP encryption failed") \
+ _ (SEQ_CYCLED, "sequence number cycled")
+
+typedef enum
+{
+#define _(sym, str) ESP_ENCRYPT_ERROR_##sym,
+ foreach_esp_encrypt_error
+#undef _
+ ESP_ENCRYPT_N_ERROR,
+} esp_encrypt_error_t;
+
+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;
+
+#ifdef CLIB_MARCH_VARIANT
+static inline void
+add_random_bytes_from_traffic (ipsecmb_main_t * imbm,
+ u32 thread_index, void *from, u8 size)
+{
+ ASSERT (STRUCT_SIZE_OF (random_bytes_t, data) == size);
+ u32 idx;
+ random_bytes_t *rb;
+ ipsecmb_per_thread_data_t *t = &imbm->per_thread_data[thread_index];;
+ if (PREDICT_TRUE (vec_len (t->rb_recycle_list)))
+ {
+ idx = vec_pop (t->rb_recycle_list);
+ rb = pool_elt_at_index (t->rb_pool, idx);
+ }
+ else
+ {
+ pool_get (t->rb_pool, rb);
+ idx = rb - t->rb_pool;
+ }
+ clib_memcpy (rb->data, from, STRUCT_SIZE_OF (random_bytes_t, data));
+ vec_add1 (t->rb_from_traffic, idx);
+}
+
+static inline int
+random_bytes (ipsecmb_main_t * imbm, u32 thread_index, u8 * where, u8 size)
+{
+ ASSERT (STRUCT_SIZE_OF (random_bytes_t, data) == size);
+ const u8 block_size = STRUCT_SIZE_OF (random_bytes_t, data);
+ ipsecmb_per_thread_data_t *t = &imbm->per_thread_data[thread_index];;
+ if (PREDICT_TRUE (vec_len (t->rb_from_traffic)))
+ {
+ u32 idx = vec_pop (t->rb_from_traffic);
+ random_bytes_t *rb = pool_elt_at_index (t->rb_pool, idx);
+ clib_memcpy (where, rb->data, block_size);
+ vec_add1 (t->rb_recycle_list, idx);
+ return 0;
+ }
+ if (PREDICT_FALSE (0 == vec_len (t->rb_from_dev_urandom)))
+ {
+ ssize_t bytes_read = read (imbm->dev_urandom_fd, t->urandom_buffer,
+ sizeof (t->urandom_buffer));
+ if (bytes_read < 0)
+ {
+ clib_unix_warning ("read() from /dev/urandom failed");
+ return -1;
+ }
+ if (bytes_read < block_size)
+ {
+ clib_unix_warning
+ ("read() from /dev/urandom produced only %zd bytes", bytes_read);
+ return -1;
+ }
+ const ssize_t limit = clib_min (bytes_read, sizeof (t->urandom_buffer));
+ int i;
+ for (i = 0; limit - i >= block_size && vec_len (t->rb_recycle_list) > 0;
+ i += block_size)
+ {
+ u32 idx = vec_pop (t->rb_recycle_list);
+ random_bytes_t *rb = pool_elt_at_index (t->rb_pool, idx);
+ clib_memcpy (rb->data, t->urandom_buffer + i, block_size);
+ vec_add1 (t->rb_from_dev_urandom, idx);
+ }
+ for (; limit - i >= block_size; i += block_size)
+ {
+ random_bytes_t *rb;
+ pool_get (t->rb_pool, rb);
+ clib_memcpy (rb->data, t->urandom_buffer + i, block_size);
+ vec_add1 (t->rb_from_dev_urandom, rb - t->rb_pool);
+ }
+ }
+ u32 idx = vec_pop (t->rb_from_dev_urandom);
+ random_bytes_t *rb = pool_elt_at_index (t->rb_pool, idx);
+ clib_memcpy (where, rb->data, block_size);
+ vec_add1 (t->rb_recycle_list, idx);
+ return 0;
+}
+
+static inline void
+esp_finish_encrypt (vlib_main_t * vm, JOB_AES_HMAC * job,
+ ipsecmb_main_t * imbm, int thread_index,
+ u32 * bi0, u32 * next0, ipsec_sa_t ** sa0, int is_ip6)
+{
+ ip4_header_t *oh4 = 0;
+ udp_header_t *udp = 0;
+ ip6_header_t *oh6 = 0;
+ ipsec_main_t *im = &ipsec_main;
+ *bi0 = (uintptr_t) job->user_data;
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, *bi0);
+ u32 sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
+ *sa0 = pool_elt_at_index (im->sad, sa_index0);
+ oh4 = vlib_buffer_get_current (b0);
+ oh6 = vlib_buffer_get_current (b0);
+ if (is_ip6)
+ {
+ oh6->payload_length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
+ sizeof (ip6_header_t));
+ }
+ else
+ {
+ oh4->length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
+ oh4->checksum = ip4_header_checksum (oh4);
+ if ((*sa0)->udp_encap)
+ {
+ udp = (udp_header_t *) (oh4 + 1);
+ udp->length =
+ clib_host_to_net_u16 (clib_net_to_host_u16 (oh4->length) -
+ ip4_header_bytes (oh4));
+ }
+ }
+
+ *next0 = (uintptr_t) job->user_data2;
+ const int iv_size = imbm->crypto_algs[(*sa0)->crypto_alg].iv_size;
+ add_random_bytes_from_traffic (imbm, thread_index,
+ vlib_buffer_get_current (b0) +
+ b0->current_length - iv_size, iv_size);
+ if (!(*sa0)->is_tunnel)
+ {
+ *next0 = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
+ vlib_buffer_advance (b0, -sizeof (ethernet_header_t));
+ }
+}
+
+always_inline void
+ipsemb_ip4_fill_comon_values (ip4_header_t * oh4, u8 tos)
+{
+ oh4->ip_version_and_header_length = 0x45;
+ oh4->tos = tos;
+ oh4->fragment_id = 0;
+ oh4->flags_and_fragment_offset = 0;
+ oh4->ttl = 254;
+}
+
+always_inline void
+ipsemb_handle_udp_encap (ipsec_sa_t * sa0, esp_header_t ** esp,
+ ip4_header_t ** oh4)
+{
+ if (sa0->udp_encap)
+ {
+ *esp = (esp_header_t *) ((u8 *) esp + sizeof (udp_header_t));
+ udp_header_t *udp = (udp_header_t *) ((*oh4) + 1);
+ udp->src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
+ udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
+ udp->checksum = 0;
+ (*oh4)->protocol = IP_PROTOCOL_UDP;
+ }
+ else
+ {
+ (*oh4)->protocol = IP_PROTOCOL_IPSEC_ESP;
+ }
+}
+
+always_inline void
+esp_prepare_tunneL_headers (vlib_buffer_t * b0, ipsec_sa_t * sa0, u32 * next0,
+ u8 * next_hdr_type, ip4_header_t * ih4,
+ ip4_header_t ** oh4, ip6_header_t * ih6,
+ ip6_header_t ** oh6, esp_header_t ** esp,
+ u32 iv_size, int is_ip6)
+{
+ if (is_ip6)
+ {
+ *next0 = ESP_ENCRYPT_NEXT_IP6_LOOKUP;
+ *next_hdr_type = IP_PROTOCOL_IPV6;
+ *oh6 = (ip6_header_t *) ((u8 *) ih6 - sizeof (esp_header_t) -
+ sizeof (ip6_header_t) - iv_size);
+ (*oh6)->src_address.as_u64[0] = sa0->tunnel_src_addr.ip6.as_u64[0];
+ (*oh6)->src_address.as_u64[1] = sa0->tunnel_src_addr.ip6.as_u64[1];
+ (*oh6)->dst_address.as_u64[0] = sa0->tunnel_dst_addr.ip6.as_u64[0];
+ (*oh6)->dst_address.as_u64[1] = sa0->tunnel_dst_addr.ip6.as_u64[1];
+
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ vlib_buffer_advance (b0, -(sizeof (esp_header_t) +
+ sizeof (ip6_header_t) + iv_size));
+ (*oh6)->ip_version_traffic_class_and_flow_label =
+ ih6->ip_version_traffic_class_and_flow_label;
+ (*oh6)->protocol = IP_PROTOCOL_IPSEC_ESP;
+ (*oh6)->hop_limit = 254;
+ *esp = (esp_header_t *) ((*oh6) + 1);
+ }
+ else
+ { /* is ipv4 */
+ *next0 = ESP_ENCRYPT_NEXT_IP4_LOOKUP;
+ u32 udp_hdr_size = 0;
+ if (sa0->udp_encap)
+ {
+ udp_hdr_size = sizeof (udp_header_t);
+ }
+ *next_hdr_type = IP_PROTOCOL_IP_IN_IP;
+ (*oh4) =
+ (ip4_header_t *) (((u8 *) ih4) - sizeof (ip4_header_t) -
+ sizeof (esp_header_t) - udp_hdr_size - iv_size);
+ (*oh4)->src_address.as_u32 = sa0->tunnel_src_addr.ip4.as_u32;
+ (*oh4)->dst_address.as_u32 = sa0->tunnel_dst_addr.ip4.as_u32;
+ vlib_buffer_advance (b0, -(sizeof (ip4_header_t) +
+ sizeof (esp_header_t) +
+ udp_hdr_size + iv_size));
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ *esp = (esp_header_t *) ((*oh4) + 1);
+
+ ipsemb_ip4_fill_comon_values (*oh4, ih4->tos);
+ ipsemb_handle_udp_encap (sa0, esp, oh4);
+ }
+}
+
+always_inline void
+esp_prepare_transport_headers (vlib_buffer_t * b0, ipsec_sa_t * sa0,
+ u32 * next0, u8 * next_hdr_type,
+ ip4_header_t * ih4, ip4_header_t ** oh4,
+ ip6_header_t * ih6, ip6_header_t ** oh6,
+ esp_header_t ** esp, u32 iv_size, int is_ip6)
+{
+ if (is_ip6)
+ {
+ *next0 = ESP_ENCRYPT_NEXT_IP6_LOOKUP;
+ *next_hdr_type = ih6->protocol;
+ (*oh6) = (ip6_header_t *) ((u8 *) ih6 - sizeof (esp_header_t) -
+ iv_size);
+ if (vnet_buffer (b0)->sw_if_index[VLIB_TX] != ~0)
+ {
+ ethernet_header_t *ieh0, *oeh0;
+ ieh0 = (ethernet_header_t *) vlib_buffer_get_current (b0) - 1;
+ oeh0 = (ethernet_header_t *) (*oh6) - 1;
+ clib_memcpy (oeh0, ieh0, sizeof (ethernet_header_t));
+ }
+ (*oh6)->src_address.as_u64[0] = ih6->src_address.as_u64[0];
+ (*oh6)->src_address.as_u64[1] = ih6->src_address.as_u64[1];
+ (*oh6)->dst_address.as_u64[0] = ih6->dst_address.as_u64[0];
+ (*oh6)->dst_address.as_u64[1] = ih6->dst_address.as_u64[1];
+ vlib_buffer_advance (b0, -(sizeof (esp_header_t) + iv_size));
+ (*oh6)->ip_version_traffic_class_and_flow_label =
+ ih6->ip_version_traffic_class_and_flow_label;
+ (*oh6)->protocol = IP_PROTOCOL_IPSEC_ESP;
+ (*oh6)->hop_limit = 254;
+ *esp = (esp_header_t *) ((*oh6) + 1);
+ }
+ else
+ { /* is ipv4 */
+ *next0 = ESP_ENCRYPT_NEXT_IP4_LOOKUP;
+ u32 udp_hdr_size = 0;
+ if (sa0->udp_encap)
+ {
+ udp_hdr_size = sizeof (udp_header_t);
+ }
+ *next_hdr_type = ih4->protocol;
+ (*oh4) = (ip4_header_t *) (((u8 *) ih4) - sizeof (esp_header_t) -
+ udp_hdr_size - iv_size);
+ if (vnet_buffer (b0)->sw_if_index[VLIB_TX] != ~0)
+ {
+ ethernet_header_t *ieh0, *oeh0;
+ ieh0 = (ethernet_header_t *) vlib_buffer_get_current (b0) - 1;
+ oeh0 = (ethernet_header_t *) (*oh4) - 1;
+ clib_memcpy (oeh0, ieh0, sizeof (ethernet_header_t));
+ }
+ (*oh4)->src_address.as_u32 = ih4->src_address.as_u32;
+ (*oh4)->dst_address.as_u32 = ih4->dst_address.as_u32;
+ vlib_buffer_advance (b0,
+ -(sizeof (esp_header_t) + udp_hdr_size + iv_size));
+ *esp = (esp_header_t *) ((*oh4) + 1);
+
+ ipsemb_ip4_fill_comon_values (*oh4, ih4->tos);
+ ipsemb_handle_udp_encap (sa0, esp, oh4);
+ }
+}
+
+static uword
+esp_encrypt_ipsecmb_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);
+ n_left_from = from_frame->n_vectors;
+ ipsecmb_main_t *imbm = &ipsecmb_main;
+ ipsec_main_t *im = &ipsec_main;
+ u32 packets_in_flight = 0;
+ next_index = node->cached_next_index;
+ u32 thread_index = vlib_get_thread_index ();
+ ipsec_alloc_empty_buffers (vm, im);
+ u32 *to_be_freed = NULL;
+ ipsecmb_per_thread_data_t *t = &imbm->per_thread_data[thread_index];;
+
+ MB_MGR *mgr = imbm->mb_mgr[thread_index];
+
+ while (n_left_from > 0 || packets_in_flight > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0, next0;
+ vlib_buffer_t *b0 = 0;
+ u32 sa_index0;
+ ipsec_sa_t *sa0;
+ ipsecmb_sa_t *samb0;
+ ip4_header_t *ih4, *oh4 = 0;
+ ip6_header_t *ih6, *oh6 = 0;
+ esp_header_t *esp;
+ u8 next_hdr_type;
+
+ bi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+
+ next0 = ESP_ENCRYPT_NEXT_DROP;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
+ sa0 = pool_elt_at_index (im->sad, sa_index0);
+ samb0 = pool_elt_at_index (imbm->sad, sa_index0);
+
+ if (esp_seq_advance (sa0))
+ {
+ clib_warning ("sequence number counter has cycled SPI %u",
+ sa0->spi);
+ vlib_node_increment_counter (vm, node->node_index,
+ ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
+ // TODO: rekey SA
+ to_next[0] = bi0;
+ to_next += 1;
+ goto trace;
+ }
+
+ sa0->total_data_size += b0->current_length;
+
+ if (PREDICT_FALSE (b0->n_add_refs > 0))
+ {
+ vec_add1 (to_be_freed, bi0);
+ b0 = vlib_buffer_copy (vm, b0);
+ bi0 = vlib_get_buffer_index (vm, b0);
+ }
+
+ ih4 = vlib_buffer_get_current (b0);
+ ih6 = vlib_buffer_get_current (b0);
+
+ const int iv_size = imbm->crypto_algs[sa0->crypto_alg].iv_size;
+ if (sa0->is_tunnel)
+ esp_prepare_tunneL_headers (b0, sa0, &next0, &next_hdr_type, ih4,
+ &oh4, ih6, &oh6, &esp, iv_size,
+ is_ip6);
+ else
+ esp_prepare_transport_headers (b0, sa0, &next0, &next_hdr_type,
+ ih4, &oh4, ih6, &oh6, &esp,
+ iv_size, is_ip6);
+
+
+ esp->spi = clib_net_to_host_u32 (sa0->spi);
+ esp->seq = clib_net_to_host_u32 (sa0->seq);
+ ASSERT (sa0->crypto_alg < IPSEC_CRYPTO_N_ALG);
+
+ esp_footer_t *f0;
+ const u32 payload_offset =
+ (u8 *) (esp + 1) + iv_size - (u8 *) vlib_buffer_get_current (b0);
+ JOB_AES_HMAC *job = IPSECMB_FUNC (get_next_job) (mgr);
+ if (PREDICT_TRUE (sa0->crypto_alg != IPSEC_CRYPTO_ALG_NONE))
+ {
+ const int block_size =
+ imbm->crypto_algs[sa0->crypto_alg].block_size;
+ u32 payload_length = b0->current_length - payload_offset;
+ int blocks = 1 + (payload_length + 1) / block_size;
+
+ /* pad packet in input buffer */
+ u8 pad_bytes =
+ block_size * blocks - sizeof (esp_footer_t) - payload_length;
+ u8 i;
+ u8 *padding = vlib_buffer_get_current (b0) + b0->current_length;
+ b0->current_length = payload_offset + block_size * blocks;
+ for (i = 0; i < pad_bytes; ++i)
+ {
+ padding[i] = i + 1;
+ }
+ f0 = vlib_buffer_get_current (b0) + b0->current_length -
+ sizeof (esp_footer_t);
+ f0->pad_length = pad_bytes;
+ f0->next_header = next_hdr_type;
+
+ random_bytes (imbm, thread_index, (u8 *) (esp + 1), iv_size);
+ job->iv = (u8 *) (esp + 1);
+ job->iv_len_in_bytes = iv_size;
+ }
+
+ job->chain_order = CIPHER_HASH;
+ job->cipher_direction = ENCRYPT;
+ job->src = (u8 *) esp;
+ job->dst = (u8 *) ((u8 *) (esp + 1) + iv_size);
+ job->cipher_mode = imbm->crypto_algs[sa0->crypto_alg].cipher_mode;
+ job->aes_enc_key_expanded = samb0->aes_enc_key_expanded;
+ job->aes_dec_key_expanded = samb0->aes_dec_key_expanded;
+ job->aes_key_len_in_bytes = sa0->crypto_key_len;
+ job->cipher_start_src_offset_in_bytes =
+ sizeof (esp_header_t) + iv_size;
+ job->hash_start_src_offset_in_bytes = 0;
+ job->msg_len_to_cipher_in_bytes =
+ b0->current_length - payload_offset;
+ if (PREDICT_TRUE (IPSEC_INTEG_ALG_NONE != sa0->integ_alg))
+ {
+ if (sa0->use_esn)
+ {
+ *(u32 *) (vlib_buffer_get_current (b0) +
+ b0->current_length) = sa0->seq_hi;
+ b0->current_length += sizeof (u32);
+ }
+ job->msg_len_to_hash_in_bytes = b0->current_length -
+ payload_offset + sizeof (esp_header_t) + iv_size;
+ job->u.HMAC._hashed_auth_key_xor_ipad = samb0->ipad_hash;
+ job->u.HMAC._hashed_auth_key_xor_opad = samb0->opad_hash;
+ job->auth_tag_output =
+ vlib_buffer_get_current (b0) + b0->current_length;
+ job->auth_tag_output_len_in_bytes =
+ imbm->integ_algs[sa0->integ_alg].hash_output_length;
+ b0->current_length +=
+ imbm->integ_algs[sa0->integ_alg].hash_output_length;
+ }
+ job->hash_alg = imbm->integ_algs[sa0->integ_alg].hash_alg;
+ job->user_data = (void *) (uintptr_t) bi0;
+ job->user_data2 = (void *) (uintptr_t) next0;
+ job = IPSECMB_FUNC (submit_job) (mgr);
+ ++packets_in_flight;
+
+ if (!job)
+ {
+ continue;
+ }
+
+ --packets_in_flight;
+ esp_finish_encrypt (vm, job, imbm, thread_index, &bi0, &next0, &sa0,
+ is_ip6);
+
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ trace:
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ esp_encrypt_trace_t *tr =
+ vlib_add_trace (vm, node, 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_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+
+ if (PREDICT_FALSE (n_left_from == 0))
+ {
+ JOB_AES_HMAC *job = NULL;
+ while (n_left_to_next > 0 && (job = IPSECMB_FUNC (flush_job) (mgr)))
+ {
+ --packets_in_flight;
+ u32 bi0, next0;
+ vlib_buffer_t *b0;
+ ipsec_sa_t *sa0;
+
+ esp_finish_encrypt (vm, job, imbm, thread_index, &bi0, &next0,
+ &sa0, is_ip6);
+ b0 = vlib_get_buffer (vm, bi0);
+
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ esp_encrypt_trace_t *tr =
+ vlib_add_trace (vm, node, 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_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ vlib_node_increment_counter (vm, node->node_index,
+ ESP_ENCRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+
+ if (to_be_freed)
+ vlib_buffer_free (vm, to_be_freed, vec_len (to_be_freed));
+ vec_free (to_be_freed);
+ if (PREDICT_TRUE (vec_len (t->rb_from_traffic) > 0))
+ {
+ /* recycle traffic generated buffers, because once the packets are sent
+ * out, bytes from these packets are no longer unpredictable */
+ vec_add (t->rb_recycle_list, t->rb_from_traffic,
+ vec_len (t->rb_from_traffic));
+ _vec_len (t->rb_from_traffic) = 0;
+ }
+ return from_frame->n_vectors;
+}
+
+VLIB_NODE_FN (esp4_encrypt_ipsecmb_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return esp_encrypt_ipsecmb_inline (vm, node, from_frame, 0 /*is_ip6 */ );
+}
+
+VLIB_NODE_FN (esp6_encrypt_ipsecmb_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return esp_encrypt_ipsecmb_inline (vm, node, from_frame, 1 /*is_ip6 */ );
+}
+#endif
+
+static char *esp_encrypt_error_strings[] = {
+#define _(sym, string) string,
+ foreach_esp_encrypt_error
+#undef _
+};
+
+/* 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: 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, t->udp_encap ? " udp-encap-enabled" : "");
+ return s;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (esp4_encrypt_ipsecmb_node) = {
+ .name = "esp4-encrypt-ipsecmb",
+ .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* */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (esp6_encrypt_ipsecmb_node) = {
+ .name = "esp6-encrypt-ipsecmb",
+ .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* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * init.c : ipsecmb common code
+ *
+ * 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 <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <vnet/plugin/plugin.h>
+#include <vpp/app/version.h>
+#include <ipsecmb/ipsecmb.h>
+ipsecmb_main_t ipsecmb_main;
+
+int
+sa_expand_keys (u32 sa_index)
+{
+ ipsecmb_main_t *imbm = &ipsecmb_main;
+ ipsec_sa_t *sa = pool_elt_at_index (ipsec_main.sad, sa_index);
+ ipsecmb_sa_t *samb = pool_elt_at_index (imbm->sad, sa_index);
+ if (sa->crypto_key_len > 0)
+ {
+ const keyexp_t keyexp_fn = imbm->crypto_algs[sa->crypto_alg].keyexp_fn;
+ keyexp_fn (sa->crypto_key, samb->aes_enc_key_expanded,
+ samb->aes_dec_key_expanded);
+ }
+ if (sa->integ_key_len > 0)
+ {
+ const u8 block_size = imbm->integ_algs[sa->integ_alg].block_size;
+ const hash_one_block_t hash_one_block_fn =
+ imbm->integ_algs[sa->integ_alg].hash_one_block_fn;
+ u8 buf[block_size];
+ int i = 0;
+ if (sa->integ_key_len > block_size)
+ {
+ return VNET_API_ERROR_SYSCALL_ERROR_1; // FIXME use correct value
+ }
+ memset (buf, 0x36, sizeof (buf));
+ for (i = 0; i < sa->integ_key_len; i++)
+ {
+ buf[i] ^= sa->integ_key[i];
+ }
+ hash_one_block_fn (buf, samb->ipad_hash);
+
+ memset (buf, 0x5c, sizeof (buf));
+ for (i = 0; i < sa->integ_key_len; i++)
+ {
+ buf[i] ^= sa->integ_key[i];
+ }
+ hash_one_block_fn (buf, samb->opad_hash);
+ }
+ return 0;
+}
+
+static clib_error_t *
+ipsecmb_add_del_sa_session (u32 sa_index, u8 is_add)
+{
+ ipsecmb_main_t *imbm = &ipsecmb_main;
+ if (is_add)
+ {
+ ipsecmb_sa_t *samb = NULL;
+ pool_get (imbm->sad, samb);
+ ASSERT (samb == pool_elt_at_index (imbm->sad, sa_index));
+ sa_expand_keys (sa_index);
+ }
+ else
+ {
+ pool_put_index (imbm->sad, sa_index);
+ }
+ return 0;
+}
+
+clib_error_t *
+ipsecmb_check_esp_support (ipsec_sa_t * sa)
+{
+ switch (sa->crypto_alg)
+ {
+ case IPSEC_CRYPTO_ALG_NONE:
+ break;
+ case IPSEC_CRYPTO_ALG_DES_CBC:
+ case IPSEC_CRYPTO_ALG_3DES_CBC:
+ return clib_error_return (0, "unsupported (3)des crypto-alg");
+ case IPSEC_CRYPTO_ALG_AES_CBC_128:
+ case IPSEC_CRYPTO_ALG_AES_CBC_192:
+ case IPSEC_CRYPTO_ALG_AES_CBC_256:
+ break;
+ case IPSEC_CRYPTO_ALG_AES_CTR_128:
+ case IPSEC_CRYPTO_ALG_AES_CTR_192:
+ case IPSEC_CRYPTO_ALG_AES_CTR_256:
+ return clib_error_return (0, "unsupported aes-ctr crypto-alg");
+ case IPSEC_CRYPTO_ALG_AES_GCM_128:
+ case IPSEC_CRYPTO_ALG_AES_GCM_192:
+ case IPSEC_CRYPTO_ALG_AES_GCM_256:
+ return clib_error_return (0, "unsupported aes-gcm crypto-alg");
+ case IPSEC_CRYPTO_N_ALG:
+ return clib_error_return (0, "invalid crypto-alg");
+ }
+
+ switch (sa->integ_alg)
+ {
+ case IPSEC_INTEG_ALG_NONE:
+ return clib_error_return (0, "unsupported none integ-alg");
+ case IPSEC_INTEG_ALG_MD5_96:
+ return clib_error_return (0, "unsupported md5 integ-alg");
+ case IPSEC_INTEG_ALG_SHA1_96:
+ case IPSEC_INTEG_ALG_SHA_256_96:
+ case IPSEC_INTEG_ALG_SHA_256_128:
+ case IPSEC_INTEG_ALG_SHA_384_192:
+ case IPSEC_INTEG_ALG_SHA_512_256:
+ break;
+ case IPSEC_INTEG_N_ALG:
+ return clib_error_return (0, "invalid integ-alg");
+ }
+ return 0;
+}
+
+clib_error_t *
+ipsecmb_check_ah_support (ipsec_sa_t * sa)
+{
+ switch (sa->integ_alg)
+ {
+ case IPSEC_INTEG_ALG_NONE:
+ return clib_error_return (0, "unsupported none integ-alg");
+ case IPSEC_INTEG_ALG_MD5_96:
+ return clib_error_return (0, "unsupported md5 integ-alg");
+ case IPSEC_INTEG_ALG_SHA1_96:
+ case IPSEC_INTEG_ALG_SHA_256_96:
+ case IPSEC_INTEG_ALG_SHA_256_128:
+ case IPSEC_INTEG_ALG_SHA_384_192:
+ case IPSEC_INTEG_ALG_SHA_512_256:
+ break;
+ case IPSEC_INTEG_N_ALG:
+ return clib_error_return (0, "invalid integ-alg");
+ }
+ return 0;
+}
+
+static clib_error_t *
+ipsecmb_init (vlib_main_t * vm)
+{
+ ipsecmb_main_t *imbm = &ipsecmb_main;
+ imbm->dev_urandom_fd = open ("/dev/urandom", O_RDONLY);
+ if (!imbm->dev_urandom_fd)
+ {
+ return clib_error_return_unix_fatal (0,
+ "Can't open /dev/urandom for read");
+ }
+
+ vlib_thread_main_t *tm = vlib_get_thread_main ();
+
+ imbm->crypto_algs = NULL;
+ imbm->integ_algs = NULL;
+
+ vec_validate (imbm->crypto_algs, IPSEC_CRYPTO_N_ALG - 1);
+ vec_validate (imbm->integ_algs, IPSEC_INTEG_N_ALG - 1);
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_128].block_size = 16;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_192].block_size = 16;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_256].block_size = 16;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_DES_CBC].block_size = 8;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_3DES_CBC].block_size = 8;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_128].iv_size = 16;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_192].iv_size = 16;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_256].iv_size = 16;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_DES_CBC].iv_size = 8;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_3DES_CBC].iv_size = 8;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_128].cipher_mode = CBC;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_192].cipher_mode = CBC;
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_256].cipher_mode = CBC;
+
+ ipsecmb_integ_alg_t *i;
+ i = &imbm->integ_algs[IPSEC_INTEG_ALG_SHA1_96];
+ i->hash_alg = SHA1;
+ i->block_size = SHA1_BLOCK_SIZE;
+
+ i = &imbm->integ_algs[IPSEC_INTEG_ALG_SHA_256_96];
+ i->hash_alg = SHA_256;
+ i->block_size = SHA_256_BLOCK_SIZE;
+
+ i = &imbm->integ_algs[IPSEC_INTEG_ALG_SHA_256_128];
+ i->hash_alg = SHA_256;
+ i->block_size = SHA_256_BLOCK_SIZE;
+
+ i = &imbm->integ_algs[IPSEC_INTEG_ALG_SHA_384_192];
+ i->hash_alg = SHA_384;
+ i->block_size = SHA_384_BLOCK_SIZE;
+
+ i = &imbm->integ_algs[IPSEC_INTEG_ALG_SHA_512_256];
+ i->hash_alg = SHA_512;
+ i->block_size = SHA_512_BLOCK_SIZE;
+
+ vec_validate (imbm->mb_mgr, tm->n_vlib_mains - 1);
+ MB_MGR **mgr;
+#define __set_funcs(arch) \
+ do \
+ { \
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_128].keyexp_fn = \
+ aes_keyexp_128_##arch; \
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_192].keyexp_fn = \
+ aes_keyexp_192_##arch; \
+ imbm->crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_256].keyexp_fn = \
+ aes_keyexp_256_##arch; \
+ imbm->integ_algs[IPSEC_INTEG_ALG_SHA1_96].hash_one_block_fn = \
+ sha1_one_block_##arch; \
+ imbm->integ_algs[IPSEC_INTEG_ALG_SHA_256_96].hash_one_block_fn = \
+ sha256_one_block_##arch; \
+ imbm->integ_algs[IPSEC_INTEG_ALG_SHA_256_128].hash_one_block_fn = \
+ sha256_one_block_##arch; \
+ imbm->integ_algs[IPSEC_INTEG_ALG_SHA_384_192].hash_one_block_fn = \
+ sha384_one_block_##arch; \
+ imbm->integ_algs[IPSEC_INTEG_ALG_SHA_512_256].hash_one_block_fn = \
+ sha512_one_block_##arch; \
+ } \
+ while (0);
+
+ if (clib_cpu_supports_avx512f ())
+ {
+ __set_funcs (avx512);
+ vec_foreach (mgr, imbm->mb_mgr)
+ {
+ *mgr = alloc_mb_mgr (0);
+ init_mb_mgr_avx512 (*mgr);
+ }
+ }
+ else if (clib_cpu_supports_avx2 ())
+ {
+ __set_funcs (avx2);
+ vec_foreach (mgr, imbm->mb_mgr)
+ {
+ *mgr = alloc_mb_mgr (0);
+ init_mb_mgr_avx2 (*mgr);
+ }
+ }
+ else
+ {
+ __set_funcs (sse);
+ vec_foreach (mgr, imbm->mb_mgr)
+ {
+ *mgr = alloc_mb_mgr (0);
+ init_mb_mgr_sse (*mgr);
+ }
+ }
+#undef __set_funcs
+
+
+ i = &imbm->integ_algs[IPSEC_INTEG_ALG_SHA1_96];
+ i->hash_output_length = 12;
+
+ i = &imbm->integ_algs[IPSEC_INTEG_ALG_SHA_256_96];
+ i->hash_output_length = 12;
+
+ i = &imbm->integ_algs[IPSEC_INTEG_ALG_SHA_256_128];
+ i->hash_output_length = 16;
+
+ i = &imbm->integ_algs[IPSEC_INTEG_ALG_SHA_384_192];
+ i->hash_output_length = 24;
+
+ i = &imbm->integ_algs[IPSEC_INTEG_ALG_SHA_512_256];
+ i->hash_output_length = 32;
+
+ vec_validate (imbm->per_thread_data, tm->n_vlib_mains - 1);
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (ipsecmb_init);
+
+static uword
+ipsecmb_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
+{
+ ipsec_main_t *im = &ipsec_main;
+ ipsec_register_ah_backend (vm, im, "ipsecmb backend",
+ "ah4-encrypt-ipsecmb",
+ "ah4-decrypt-ipsecmb",
+ "ah6-encrypt-ipsecmb",
+ "ah6-decrypt-ipsecmb",
+ ipsecmb_check_ah_support,
+ ipsecmb_add_del_sa_session);
+
+ ipsec_register_esp_backend (vm, im, "ipsecmb backend",
+ "esp4-encrypt-ipsecmb",
+ "esp4-decrypt-ipsecmb",
+ "esp6-encrypt-ipsecmb",
+ "esp6-decrypt-ipsecmb",
+ ipsecmb_check_esp_support,
+ ipsecmb_add_del_sa_session);
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ipsecmb_process_node, static) = {
+ .function = ipsecmb_process,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .name = "ipsecmb-process",
+ .process_log2_n_stack_bytes = 17,
+};
+
+/* *INDENT-OFF* */
+VLIB_PLUGIN_REGISTER () = {
+ .version = VPP_BUILD_VER,
+ .description = "IPsecMB plugin",
+ .default_disabled = 1,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+#ifndef __included_ipsecmb_h__
+#define __included_ipsecmb_h__
+
+#include <vppinfra/types.h>
+#include <vppinfra/vec.h>
+#include <vppinfra/clib.h>
+#include <vppinfra/warnings.h>
+#include <vnet/ipsec/ipsec.h>
+
+WARN_OFF (attributes);
+
+#ifdef always_inline
+#undef always_inline
+#define __need_redefine__
+#endif
+
+#include <intel-ipsec-mb.h>
+
+#ifdef __need_redefine__
+#if CLIB_DEBUG > 0
+#define always_inline static inline
+#else
+#define always_inline static inline __attribute__ ((__always_inline__))
+#endif
+#endif // __need_redefine__
+WARN_ON (attributes);
+
+typedef struct
+{
+ keyexp_t keyexp_fn;
+ JOB_CIPHER_MODE cipher_mode;
+ u8 key_len;
+ u8 iv_size;
+ u8 block_size;
+} ipsecmb_crypto_alg_t;
+
+typedef struct
+{
+ hash_one_block_t hash_one_block_fn;
+ u8 block_size;
+ JOB_HASH_ALG hash_alg;
+ u8 hash_output_length;
+} ipsecmb_integ_alg_t;
+
+typedef struct
+{
+ u8 aes_enc_key_expanded[16 * 15] __attribute__ ((aligned (16)));
+ u8 aes_dec_key_expanded[16 * 15] __attribute__ ((aligned (16)));
+ u8 ipad_hash[256] __attribute__ ((aligned (16)));
+ u8 opad_hash[256] __attribute__ ((aligned (16)));
+} ipsecmb_sa_t;
+
+typedef struct
+{
+ u8 data[16];
+} random_bytes_t;
+
+typedef u8 urandom_buffer_t[4096];
+
+typedef struct
+{
+ /** read buffer for random data from /dev/urandom */
+ urandom_buffer_t urandom_buffer;
+ /** pool of all the random_bytes_t objects ever allocated */
+ random_bytes_t *rb_pool;
+ /** vector of random_bytes_t objects containing random bytes */
+ u32 *rb_from_dev_urandom;
+ /** vector of used random_bytes_t objects */
+ u32 *rb_recycle_list;
+ /** vector of random bytes collected from encrypted data */
+ u32 *rb_from_traffic;
+} ipsecmb_per_thread_data_t;
+
+typedef struct
+{
+ ipsecmb_crypto_alg_t *crypto_algs;
+ ipsecmb_integ_alg_t *integ_algs;
+ MB_MGR **mb_mgr;
+ ipsecmb_sa_t *sad;
+ ipsecmb_per_thread_data_t *per_thread_data;
+ int dev_urandom_fd;
+} ipsecmb_main_t;
+
+extern ipsecmb_main_t ipsecmb_main;
+
+#define P(x,y) x ## _ ## y
+#define E(x,y) P(x,y)
+#define IPSECMB_FUNC(f) E(f,CLIB_MARCH_VARIANT)
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
+
+#endif /* __included_ipsecmb_h__ */
{
u32 flags;
u32 sad_index;
+ u32 ip_version_traffic_class_and_flow_label;
+ u8 tos;
+ u8 ttl_or_hop_limit;
+ u32 seq;
} ipsec;
/* MAP */
from template_ipsec import TemplateIpsec
-class IPSecNATTestCase(TemplateIpsec):
+class TemplateIPSecNAT(TemplateIpsec):
""" IPSec/NAT
TUNNEL MODE:
@classmethod
def setUpClass(cls):
- super(IPSecNATTestCase, cls).setUpClass()
+ super(TemplateIPSecNAT, cls).setUpClass()
cls.tun_if = cls.pg0
cls.vapi.ipsec_spd_add_del(cls.tun_spd_id)
cls.vapi.ipsec_interface_add_del_spd(cls.tun_spd_id,
self.pg_start()
capture = self.pg1.get_capture(len(pkts))
self.verify_capture_plain(capture)
+
+
+class IPSecNAT(TemplateIPSecNAT):
+ """ IPSec/NAT """
+ pass
--- /dev/null
+from test_ipsec_ah import TemplateIpsecAh
+from template_ipsec import IpsecTraTests, IpsecTunTests, IpsecTcpTests
+
+
+class TestIpsecMBAh1(TemplateIpsecAh, IpsecTraTests, IpsecTunTests):
+ """ IpsecMB AH - TUN & TRA tests """
+ extra_vpp_plugin_config = [
+ "plugin", "ipsecmb_plugin.so", "{", "enable", "}"]
+
+ tra4_encrypt_node_name = "ah4-encrypt-ipsecmb"
+ tra4_decrypt_node_name = "ah4-decrypt-ipsecmb"
+ tra6_encrypt_node_name = "ah6-encrypt-ipsecmb"
+ tra6_decrypt_node_name = "ah6-decrypt-ipsecmb"
+ tun4_encrypt_node_name = "ah4-encrypt-ipsecmb"
+ tun4_decrypt_node_name = "ah4-decrypt-ipsecmb"
+ tun6_encrypt_node_name = "ah6-encrypt-ipsecmb"
+ tun6_decrypt_node_name = "ah6-decrypt-ipsecmb"
+
+ @classmethod
+ def ipsec_select_backend(cls):
+ cls.vapi.ipsec_select_backend(protocol=cls.vpp_ah_protocol, index=1)
+
+
+class TestIpsecMBAh2(TemplateIpsecAh, IpsecTcpTests):
+ """ IpsecMB AH - TCP tests """
+ extra_vpp_plugin_config = [
+ "plugin", "ipsecmb_plugin.so", "{", "enable", "}"]
+
+ @classmethod
+ def ipsec_select_backend(cls):
+ cls.vapi.ipsec_select_backend(protocol=cls.vpp_ah_protocol, index=1)
--- /dev/null
+from test_ipsec_esp import TemplateIpsecEsp
+from template_ipsec import IpsecTraTests, IpsecTunTests, IpsecTcpTests
+
+
+class TestIpsecMBEsp1(TemplateIpsecEsp, IpsecTraTests, IpsecTunTests):
+ """ IpsecMB ESP - TUN & TRA tests """
+ extra_vpp_plugin_config = [
+ "plugin", "ipsecmb_plugin.so", "{", "enable", "}"]
+ tra4_encrypt_node_name = "esp4-encrypt-ipsecmb"
+ tra4_decrypt_node_name = "esp4-decrypt-ipsecmb"
+ tra6_encrypt_node_name = "esp6-encrypt-ipsecmb"
+ tra6_decrypt_node_name = "esp6-decrypt-ipsecmb"
+ tun4_encrypt_node_name = "esp4-encrypt-ipsecmb"
+ tun4_decrypt_node_name = "esp4-decrypt-ipsecmb"
+ tun6_encrypt_node_name = "esp6-encrypt-ipsecmb"
+ tun6_decrypt_node_name = "esp6-decrypt-ipsecmb"
+
+ @classmethod
+ def ipsec_select_backend(cls):
+ cls.vapi.ipsec_select_backend(protocol=cls.vpp_esp_protocol, index=1)
+
+
+class TestIpsecMBEsp2(TemplateIpsecEsp, IpsecTcpTests):
+ """ IpsecMB ESP - TCP tests """
+ extra_vpp_plugin_config = [
+ "plugin", "ipsecmb_plugin.so", "{", "enable", "}"]
+
+ @classmethod
+ def ipsec_select_backend(cls):
+ cls.vapi.ipsec_select_backend(protocol=cls.vpp_esp_protocol, index=1)
--- /dev/null
+#!/usr/bin/env python
+
+from test_ipsec_nat import TemplateIPSecNAT
+
+
+class IPSecMBNATTestCase(TemplateIPSecNAT):
+ """ IPSecMB/NAT """
+ extra_vpp_plugin_config = [
+ "plugin", "ipsecmb_plugin.so", "{", "enable", "}"]
+
+ @classmethod
+ def ipsec_select_backend(cls):
+ cls.vapi.ipsec_select_backend(protocol=cls.vpp_ah_protocol, index=1)
Code Review / vpp.git / commitdiff