vnet/ipsec/esp_format.c \
vnet/ipsec/esp_encrypt.c \
vnet/ipsec/esp_decrypt.c \
+ vnet/ipsec/ah_decrypt.c \
+ vnet/ipsec/ah_encrypt.c \
vnet/ipsec/ikev2.c \
vnet/ipsec/ikev2_crypto.c \
vnet/ipsec/ikev2_cli.c \
nobase_include_HEADERS += \
vnet/ipsec/ipsec.h \
vnet/ipsec/esp.h \
+ vnet/ipsec/ah.h \
vnet/ipsec/ikev2.h \
vnet/ipsec/ikev2_priv.h \
vnet/ipsec/ipsec.api.h
--- /dev/null
+/*
+ * 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.
+ */
+#ifndef __AH_H__
+#define __AH_H__
+
+
+#include <vnet/ip/ip.h>
+#include <vnet/ipsec/ipsec.h>
+
+#include <openssl/hmac.h>
+#include <openssl/rand.h>
+#include <openssl/evp.h>
+
+
+typedef struct
+{
+ unsigned char nexthdr;
+ unsigned char hdrlen;
+ unsigned short reserved;
+ unsigned int spi;
+ unsigned int seq_no;
+ unsigned char auth_data[0];
+} ah_header_t;
+
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+ ip4_header_t ip4;
+ ah_header_t ah;
+}) ip4_and_ah_header_t;
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+ ip6_header_t ip6;
+ ah_header_t ah;
+}) ip6_and_ah_header_t;
+/* *INDENT-ON* */
+
+#endif /* __AH_H__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * ah_decrypt.c : IPSec 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>
+
+#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;
+}
+
+static uword
+ah_decrypt_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ u32 n_left_from, *from, next_index, *to_next;
+ ipsec_main_t *im = &ipsec_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;
+
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 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 i_bi0;
+ u32 next0;
+ vlib_buffer_t *i_b0;
+ ah_header_t *ah0;
+ ipsec_sa_t *sa0;
+ u32 sa_index0 = ~0;
+ u32 seq;
+ ip4_header_t *ih4 = 0, *oh4 = 0;
+ ip6_header_t *ih6 = 0, *oh6 = 0;
+ u8 tunnel_mode = 1;
+ u8 transport_ip6 = 0;
+ u8 ip_hdr_size = 0;
+ u8 tos = 0;
+ u8 ttl = 0;
+
+
+ i_bi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ next0 = AH_DECRYPT_NEXT_DROP;
+
+ i_b0 = vlib_get_buffer (vm, i_bi0);
+ to_next[0] = i_bi0;
+ to_next += 1;
+ ih4 = vlib_buffer_get_current (i_b0);
+ ip_hdr_size = ip4_header_bytes (ih4);
+ ah0 = (ah_header_t *) ((u8 *) ih4 + ip_hdr_size);
+
+ sa_index0 = vnet_buffer (i_b0)->ipsec.sad_index;
+ sa0 = pool_elt_at_index (im->sad, sa_index0);
+
+ 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, ah_decrypt_node.index,
+ AH_DECRYPT_ERROR_REPLAY, 1);
+ to_next[0] = i_bi0;
+ to_next += 1;
+ goto trace;
+ }
+ }
+
+
+ sa0->total_data_size += i_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 sig[64];
+ u8 digest[64];
+ memset (sig, 0, sizeof (sig));
+ memset (digest, 0, sizeof (digest));
+ u8 *icv =
+ vlib_buffer_get_current (i_b0) + ip_hdr_size +
+ sizeof (ah_header_t);
+ memcpy (digest, icv, icv_size);
+ memset (icv, 0, icv_size);
+
+ if ((ih4->ip_version_and_header_length & 0xF0) == 0x40)
+ {
+ tos = ih4->tos;
+ ttl = ih4->ttl;
+ ih4->tos = 0;
+ ih4->ttl = 0;
+ ih4->checksum = 0;
+ ih4->flags_and_fragment_offset = 0;
+ } //TODO else part for IPv6
+ hmac_calc (sa0->integ_alg, sa0->integ_key, sa0->integ_key_len,
+ (u8 *) ih4, i_b0->current_length, sig, sa0->use_esn,
+ sa0->seq_hi);
+
+ if (PREDICT_FALSE (memcmp (digest, sig, icv_size)))
+ {
+ vlib_node_increment_counter (vm, ah_decrypt_node.index,
+ AH_DECRYPT_ERROR_INTEG_ERROR,
+ 1);
+ to_next[0] = i_bi0;
+ to_next += 1;
+ goto trace;
+ }
+
+ //TODO UT remaining
+ if (PREDICT_TRUE (sa0->use_anti_replay))
+ {
+ if (PREDICT_TRUE (sa0->use_esn))
+ esp_replay_advance_esn (sa0, seq);
+ else
+ esp_replay_advance (sa0, seq);
+ }
+
+ }
+
+
+ vlib_buffer_advance (i_b0,
+ ip_hdr_size + sizeof (ah_header_t) + icv_size);
+ i_b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+
+ /* transport mode */
+ if (PREDICT_FALSE (!sa0->is_tunnel && !sa0->is_tunnel_ip6))
+ {
+ tunnel_mode = 0;
+
+ 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", ah0->nexthdr);
+ vlib_node_increment_counter (vm, ah_decrypt_node.index,
+ AH_DECRYPT_ERROR_NOT_IP,
+ 1);
+ goto trace;
+ }
+ }
+ }
+
+ if (PREDICT_TRUE (tunnel_mode))
+ {
+ if (PREDICT_TRUE (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, ah_decrypt_node.index,
+ AH_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ goto trace;
+ }
+ }
+ /* transport mode */
+ else
+ {
+ if (PREDICT_FALSE (transport_ip6))
+ {
+ ih6 =
+ (ip6_header_t *) (i_b0->data +
+ sizeof (ethernet_header_t));
+ vlib_buffer_advance (i_b0, -sizeof (ip6_header_t));
+ oh6 = vlib_buffer_get_current (i_b0);
+ memmove (oh6, ih6, sizeof (ip6_header_t));
+
+ next0 = AH_DECRYPT_NEXT_IP6_INPUT;
+ oh6->protocol = ah0->nexthdr;
+ oh6->payload_length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain
+ (vm, i_b0) - sizeof (ip6_header_t));
+ }
+ else
+ {
+ vlib_buffer_advance (i_b0, -sizeof (ip4_header_t));
+ oh4 = vlib_buffer_get_current (i_b0);
+ memmove (oh4, ih4, sizeof (ip4_header_t));
+
+ next0 = AH_DECRYPT_NEXT_IP4_INPUT;
+ oh4->ip_version_and_header_length = 0x45;
+ oh4->fragment_id = 0;
+ oh4->flags_and_fragment_offset = 0;
+ oh4->protocol = ah0->nexthdr;
+ oh4->length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain
+ (vm, i_b0));
+ oh4->ttl = ttl;
+ oh4->tos = tos;
+ oh4->checksum = ip4_header_checksum (oh4);
+ }
+ }
+
+ /* for IPSec-GRE tunnel next node is ipsec-gre-input */
+ if (PREDICT_FALSE
+ ((vnet_buffer (i_b0)->ipsec.flags) &
+ IPSEC_FLAG_IPSEC_GRE_TUNNEL))
+ next0 = AH_DECRYPT_NEXT_IPSEC_GRE_INPUT;
+
+
+ vnet_buffer (i_b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ trace:
+ if (PREDICT_FALSE (i_b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ i_b0->flags |= VLIB_BUFFER_IS_TRACED;
+ ah_decrypt_trace_t *tr =
+ vlib_add_trace (vm, node, i_b0, sizeof (*tr));
+ tr->integ_alg = sa0->integ_alg;
+ }
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, i_bi0, next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ vlib_node_increment_counter (vm, ah_decrypt_node.index,
+ AH_DECRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+
+ return from_frame->n_vectors;
+}
+
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ah_decrypt_node) = {
+ .function = ah_decrypt_node_fn,
+ .name = "ah-decrypt",
+ .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* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (ah_decrypt_node, ah_decrypt_node_fn)
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * ah_encrypt.c : IPSec 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>
+
+#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 _
+};
+
+vlib_node_registration_t ah_encrypt_node;
+
+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;
+}
+
+static uword
+ah_encrypt_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ 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;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 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 i_bi0, next0;
+ vlib_buffer_t *i_b0 = 0;
+ u32 sa_index0;
+ ipsec_sa_t *sa0;
+ ip4_and_ah_header_t *ih0, *oh0 = 0;
+ ip6_and_ah_header_t *ih6_0, *oh6_0 = 0;
+ u8 is_ipv6;
+ u8 ip_hdr_size;
+ u8 next_hdr_type;
+ u8 transport_mode = 0;
+ u8 tos = 0;
+ u8 ttl = 0;
+
+ i_bi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+ next0 = AH_ENCRYPT_NEXT_DROP;
+
+ i_b0 = vlib_get_buffer (vm, i_bi0);
+ to_next[0] = i_bi0;
+ to_next += 1;
+ sa_index0 = vnet_buffer (i_b0)->ipsec.sad_index;
+ sa0 = pool_elt_at_index (im->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, ah_encrypt_node.index,
+ AH_ENCRYPT_ERROR_SEQ_CYCLED, 1);
+ //TODO need to confirm if below is needed
+ to_next[0] = i_bi0;
+ to_next += 1;
+ goto trace;
+ }
+
+
+ sa0->total_data_size += i_b0->current_length;
+
+ ssize_t adv;
+ ih0 = vlib_buffer_get_current (i_b0);
+ ttl = ih0->ip4.ttl;
+ tos = ih0->ip4.tos;
+
+ is_ipv6 = (ih0->ip4.ip_version_and_header_length & 0xF0) == 0x60;
+ /* is ipv6 */
+ if (PREDICT_TRUE (sa0->is_tunnel))
+ {
+ if (PREDICT_TRUE (!is_ipv6))
+ adv = -sizeof (ip4_and_ah_header_t);
+ else
+ adv = -sizeof (ip6_and_ah_header_t);
+ }
+ else
+ {
+ adv = -sizeof (ah_header_t);
+ }
+
+ 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 (i_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 (i_b0, adv - icv_size);
+
+ /* is ipv6 */
+ if (PREDICT_FALSE (is_ipv6))
+ {
+ ih6_0 = (ip6_and_ah_header_t *) ih0;
+ ip_hdr_size = sizeof (ip6_header_t);
+ oh6_0 = vlib_buffer_get_current (i_b0);
+
+ if (PREDICT_TRUE (sa0->is_tunnel))
+ {
+ next_hdr_type = IP_PROTOCOL_IPV6;
+ oh6_0->ip6.ip_version_traffic_class_and_flow_label =
+ ih6_0->ip6.ip_version_traffic_class_and_flow_label;
+ }
+ else
+ {
+ next_hdr_type = ih6_0->ip6.protocol;
+ memmove (oh6_0, ih6_0, sizeof (ip6_header_t));
+ }
+
+ oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_AH;
+ oh6_0->ip6.hop_limit = 254;
+ oh6_0->ah.spi = clib_net_to_host_u32 (sa0->spi);
+ oh6_0->ah.seq_no = clib_net_to_host_u32 (sa0->seq);
+ oh6_0->ip6.payload_length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, i_b0) -
+ sizeof (ip6_header_t));
+ }
+ else
+ {
+ ip_hdr_size = sizeof (ip4_header_t);
+ oh0 = vlib_buffer_get_current (i_b0);
+ memset (oh0, 0, sizeof (ip4_and_ah_header_t));
+
+ if (PREDICT_TRUE (sa0->is_tunnel))
+ {
+ next_hdr_type = IP_PROTOCOL_IP_IN_IP;
+ }
+ else
+ {
+ next_hdr_type = ih0->ip4.protocol;
+ memmove (oh0, ih0, sizeof (ip4_header_t));
+ }
+
+ oh0->ip4.length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, i_b0));
+ oh0->ip4.ip_version_and_header_length = 0x45;
+ oh0->ip4.fragment_id = 0;
+ oh0->ip4.flags_and_fragment_offset = 0;
+ oh0->ip4.ttl = 0;
+ oh0->ip4.tos = 0;
+ oh0->ip4.protocol = IP_PROTOCOL_IPSEC_AH;
+ oh0->ah.spi = clib_net_to_host_u32 (sa0->spi);
+ oh0->ah.seq_no = clib_net_to_host_u32 (sa0->seq);
+ oh0->ip4.checksum = 0;
+ oh0->ah.nexthdr = next_hdr_type;
+ oh0->ah.hdrlen = 4;
+ }
+
+
+
+ if (PREDICT_TRUE
+ (!is_ipv6 && sa0->is_tunnel && !sa0->is_tunnel_ip6))
+ {
+ oh0->ip4.src_address.as_u32 = sa0->tunnel_src_addr.ip4.as_u32;
+ oh0->ip4.dst_address.as_u32 = sa0->tunnel_dst_addr.ip4.as_u32;
+
+ next0 = AH_ENCRYPT_NEXT_IP4_LOOKUP;
+ vnet_buffer (i_b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ }
+ else if (is_ipv6 && sa0->is_tunnel && sa0->is_tunnel_ip6)
+ {
+ oh6_0->ip6.src_address.as_u64[0] =
+ sa0->tunnel_src_addr.ip6.as_u64[0];
+ oh6_0->ip6.src_address.as_u64[1] =
+ sa0->tunnel_src_addr.ip6.as_u64[1];
+ oh6_0->ip6.dst_address.as_u64[0] =
+ sa0->tunnel_dst_addr.ip6.as_u64[0];
+ oh6_0->ip6.dst_address.as_u64[1] =
+ sa0->tunnel_dst_addr.ip6.as_u64[1];
+
+ next0 = AH_ENCRYPT_NEXT_IP6_LOOKUP;
+ vnet_buffer (i_b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ }
+ else
+ {
+ transport_mode = 1;
+ next0 = AH_ENCRYPT_NEXT_INTERFACE_OUTPUT;
+ }
+
+ u8 sig[64];
+ memset (sig, 0, sizeof (sig));
+ u8 *digest = NULL;
+ {
+ digest = vlib_buffer_get_current (i_b0) + ip_hdr_size + icv_size;
+ memset (digest, 0, icv_size);
+ }
+
+ hmac_calc (sa0->integ_alg, sa0->integ_key,
+ sa0->integ_key_len,
+ (u8 *) vlib_buffer_get_current (i_b0),
+ i_b0->current_length, sig, sa0->use_esn, sa0->seq_hi);
+
+ memcpy (digest, (char *) &sig[0], 12);
+
+ if (PREDICT_FALSE (is_ipv6))
+ {
+ }
+ else
+ {
+ oh0->ip4.ttl = ttl;
+ oh0->ip4.tos = tos;
+ oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4);
+ }
+
+ if (transport_mode)
+ vlib_buffer_advance (i_b0, -sizeof (ethernet_header_t));;
+
+ trace:
+ if (PREDICT_FALSE (i_b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ i_b0->flags |= VLIB_BUFFER_IS_TRACED;
+ ah_encrypt_trace_t *tr =
+ vlib_add_trace (vm, node, i_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, i_bi0,
+ next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ vlib_node_increment_counter (vm, ah_encrypt_node.index,
+ AH_ENCRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+
+ return from_frame->n_vectors;
+}
+
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ah_encrypt_node) = {
+ .function = ah_encrypt_node_fn,
+ .name = "ah-encrypt",
+ .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* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (ah_encrypt_node, ah_encrypt_node_fn)
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
typedef struct
{
const EVP_CIPHER *type;
-} esp_crypto_alg_t;
+} ipsec_proto_main_crypto_alg_t;
typedef struct
{
const EVP_MD *md;
u8 trunc_size;
-} esp_integ_alg_t;
+} ipsec_proto_main_integ_alg_t;
typedef struct
{
ipsec_crypto_alg_t last_encrypt_alg;
ipsec_crypto_alg_t last_decrypt_alg;
ipsec_integ_alg_t last_integ_alg;
-} esp_main_per_thread_data_t;
+} ipsec_proto_main_per_thread_data_t;
typedef struct
{
- esp_crypto_alg_t *esp_crypto_algs;
- esp_integ_alg_t *esp_integ_algs;
- esp_main_per_thread_data_t *per_thread_data;
-} esp_main_t;
+ ipsec_proto_main_crypto_alg_t *ipsec_proto_main_crypto_algs;
+ ipsec_proto_main_integ_alg_t *ipsec_proto_main_integ_algs;
+ ipsec_proto_main_per_thread_data_t *per_thread_data;
+} ipsec_proto_main_t;
-extern esp_main_t esp_main;
+extern ipsec_proto_main_t ipsec_proto_main;
#define ESP_WINDOW_SIZE (64)
#define ESP_SEQ_MAX (4294967295UL)
}
always_inline void
-esp_init ()
+ipsec_proto_init ()
{
- esp_main_t *em = &esp_main;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
memset (em, 0, sizeof (em[0]));
- vec_validate (em->esp_crypto_algs, IPSEC_CRYPTO_N_ALG - 1);
- em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_128].type = EVP_aes_128_cbc ();
- em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_192].type = EVP_aes_192_cbc ();
- em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_256].type = EVP_aes_256_cbc ();
+ vec_validate (em->ipsec_proto_main_crypto_algs, IPSEC_CRYPTO_N_ALG - 1);
+ em->ipsec_proto_main_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_128].type =
+ EVP_aes_128_cbc ();
+ em->ipsec_proto_main_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_192].type =
+ EVP_aes_192_cbc ();
+ em->ipsec_proto_main_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_256].type =
+ EVP_aes_256_cbc ();
- vec_validate (em->esp_integ_algs, IPSEC_INTEG_N_ALG - 1);
- esp_integ_alg_t *i;
+ vec_validate (em->ipsec_proto_main_integ_algs, IPSEC_INTEG_N_ALG - 1);
+ ipsec_proto_main_integ_alg_t *i;
- i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA1_96];
+ i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA1_96];
i->md = EVP_sha1 ();
i->trunc_size = 12;
- i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_256_96];
+ i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_256_96];
i->md = EVP_sha256 ();
i->trunc_size = 12;
- i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_256_128];
+ i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_256_128];
i->md = EVP_sha256 ();
i->trunc_size = 16;
- i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_384_192];
+ i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_384_192];
i->md = EVP_sha384 ();
i->trunc_size = 24;
- i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_512_256];
+ i = &em->ipsec_proto_main_integ_algs[IPSEC_INTEG_ALG_SHA_512_256];
i->md = EVP_sha512 ();
i->trunc_size = 32;
int key_len,
u8 * data, int data_len, u8 * signature, u8 use_esn, u32 seq_hi)
{
- esp_main_t *em = &esp_main;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
u32 thread_index = vlib_get_thread_index ();
#if OPENSSL_VERSION_NUMBER >= 0x10100000L
HMAC_CTX *ctx = em->per_thread_data[thread_index].hmac_ctx;
ASSERT (alg < IPSEC_INTEG_N_ALG);
- if (PREDICT_FALSE (em->esp_integ_algs[alg].md == 0))
+ if (PREDICT_FALSE (em->ipsec_proto_main_integ_algs[alg].md == 0))
return 0;
if (PREDICT_FALSE (alg != em->per_thread_data[thread_index].last_integ_alg))
{
- md = em->esp_integ_algs[alg].md;
+ md = em->ipsec_proto_main_integ_algs[alg].md;
em->per_thread_data[thread_index].last_integ_alg = alg;
}
HMAC_Update (ctx, (u8 *) & seq_hi, sizeof (seq_hi));
HMAC_Final (ctx, signature, &len);
- return em->esp_integ_algs[alg].trunc_size;
+ return em->ipsec_proto_main_integ_algs[alg].trunc_size;
}
#endif /* __ESP_H__ */
esp_decrypt_aes_cbc (ipsec_crypto_alg_t alg,
u8 * in, u8 * out, size_t in_len, u8 * key, u8 * iv)
{
- esp_main_t *em = &esp_main;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
u32 thread_index = vlib_get_thread_index ();
#if OPENSSL_VERSION_NUMBER >= 0x10100000L
EVP_CIPHER_CTX *ctx = em->per_thread_data[thread_index].decrypt_ctx;
ASSERT (alg < IPSEC_CRYPTO_N_ALG);
- if (PREDICT_FALSE (em->esp_crypto_algs[alg].type == 0))
+ if (PREDICT_FALSE (em->ipsec_proto_main_crypto_algs[alg].type == 0))
return;
if (PREDICT_FALSE
(alg != em->per_thread_data[thread_index].last_decrypt_alg))
{
- cipher = em->esp_crypto_algs[alg].type;
+ cipher = em->ipsec_proto_main_crypto_algs[alg].type;
em->per_thread_data[thread_index].last_decrypt_alg = alg;
}
{
u32 n_left_from, *from, next_index, *to_next;
ipsec_main_t *im = &ipsec_main;
- esp_main_t *em = &esp_main;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
u32 *recycle = 0;
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
if (PREDICT_TRUE (sa0->integ_alg != IPSEC_INTEG_ALG_NONE))
{
u8 sig[64];
- int icv_size = em->esp_integ_algs[sa0->integ_alg].trunc_size;
+ int icv_size =
+ em->ipsec_proto_main_integ_algs[sa0->integ_alg].trunc_size;
memset (sig, 0, sizeof (sig));
u8 *icv =
vlib_buffer_get_current (i_b0) + i_b0->current_length -
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/esp.h>
-esp_main_t esp_main;
+ipsec_proto_main_t ipsec_proto_main;
#define foreach_esp_encrypt_next \
_(DROP, "error-drop") \
esp_encrypt_aes_cbc (ipsec_crypto_alg_t alg,
u8 * in, u8 * out, size_t in_len, u8 * key, u8 * iv)
{
- esp_main_t *em = &esp_main;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
u32 thread_index = vlib_get_thread_index ();
#if OPENSSL_VERSION_NUMBER >= 0x10100000L
EVP_CIPHER_CTX *ctx = em->per_thread_data[thread_index].encrypt_ctx;
ASSERT (alg < IPSEC_CRYPTO_N_ALG);
- if (PREDICT_FALSE (em->esp_crypto_algs[alg].type == IPSEC_CRYPTO_ALG_NONE))
+ if (PREDICT_FALSE
+ (em->ipsec_proto_main_crypto_algs[alg].type == IPSEC_CRYPTO_ALG_NONE))
return;
if (PREDICT_FALSE
(alg != em->per_thread_data[thread_index].last_encrypt_alg))
{
- cipher = em->esp_crypto_algs[alg].type;
+ cipher = em->ipsec_proto_main_crypto_algs[alg].type;
em->per_thread_data[thread_index].last_encrypt_alg = alg;
}
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/ikev2.h>
#include <vnet/ipsec/esp.h>
+#include <vnet/ipsec/ah.h>
ipsec_main_t ipsec_main;
ASSERT (node);
im->esp_decrypt_node_index = node->index;
+ node = vlib_get_node_by_name (vm, (u8 *) "ah-encrypt");
+ ASSERT (node);
+ im->ah_encrypt_node_index = node->index;
+
+ node = vlib_get_node_by_name (vm, (u8 *) "ah-decrypt");
+ ASSERT (node);
+ im->ah_decrypt_node_index = node->index;
+
im->esp_encrypt_next_index = IPSEC_OUTPUT_NEXT_ESP_ENCRYPT;
im->esp_decrypt_next_index = IPSEC_INPUT_NEXT_ESP_DECRYPT;
+ im->ah_encrypt_next_index = IPSEC_OUTPUT_NEXT_AH_ENCRYPT;
+ im->ah_decrypt_next_index = IPSEC_INPUT_NEXT_AH_DECRYPT;
im->cb.check_support_cb = ipsec_check_support;
if ((error = vlib_call_init_function (vm, ipsec_tunnel_if_init)))
return error;
- esp_init ();
+ ipsec_proto_init ();
if ((error = ikev2_init (vm)))
return error;
#define foreach_ipsec_output_next \
_(DROP, "error-drop") \
-_(ESP_ENCRYPT, "esp-encrypt")
+_(ESP_ENCRYPT, "esp-encrypt") \
+_(AH_ENCRYPT, "ah-encrypt")
#define _(v, s) IPSEC_OUTPUT_NEXT_##v,
typedef enum
#define foreach_ipsec_input_next \
_(DROP, "error-drop") \
-_(ESP_DECRYPT, "esp-decrypt")
+_(ESP_DECRYPT, "esp-decrypt") \
+_(AH_DECRYPT, "ah-decrypt")
#define _(v, s) IPSEC_INPUT_NEXT_##v,
typedef enum
u32 error_drop_node_index;
u32 esp_encrypt_node_index;
u32 esp_decrypt_node_index;
+ u32 ah_encrypt_node_index;
+ u32 ah_decrypt_node_index;
/* next node indeces */
u32 esp_encrypt_next_index;
u32 esp_decrypt_next_index;
+ u32 ah_encrypt_next_index;
+ u32 ah_decrypt_next_index;
/* callbacks */
ipsec_main_callbacks_t cb;
extern vlib_node_registration_t esp_encrypt_node;
extern vlib_node_registration_t esp_decrypt_node;
+extern vlib_node_registration_t ah_encrypt_node;
+extern vlib_node_registration_t ah_decrypt_node;
extern vlib_node_registration_t ipsec_if_output_node;
extern vlib_node_registration_t ipsec_if_input_node;
sa.protocol = IPSEC_PROTOCOL_ESP;
else if (unformat (line_input, "ah"))
{
- //sa.protocol = IPSEC_PROTOCOL_AH;
- error = clib_error_return (0, "unsupported security protocol 'AH'");
- goto done;
+ sa.protocol = IPSEC_PROTOCOL_AH;
}
else
if (unformat (line_input, "crypto-key %U", unformat_hex_string, &ck))
}
}
+ /* Check if SA is for IPv6/AH which is not supported. Return error if TRUE. */
+ if (p.sa_id)
+ {
+ uword *p1;
+ ipsec_main_t *im = &ipsec_main;
+ ipsec_sa_t *sa = 0;
+ p1 = hash_get (im->sa_index_by_sa_id, p.sa_id);
+ sa = pool_elt_at_index (im->sad, p1[0]);
+ if (sa && sa->protocol == IPSEC_PROTOCOL_AH && is_add && p.is_ipv6)
+ {
+ error = clib_error_return (0, "AH not supported for IPV6: '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ }
ipsec_add_del_policy (vm, &p, is_add);
if (is_ip_any)
{
ipsec_main_t *im = &ipsec_main;
vnet_main_t *vnm = im->vnet_main;
vnet_interface_main_t *vim = &vnm->interface_main;
- esp_main_t *em = &esp_main;
+ ipsec_proto_main_t *em = &ipsec_proto_main;
u32 *from, *to_next = 0, next_index;
u32 n_left_from, last_sw_if_index = ~0;
u32 thread_index = vlib_get_thread_index ();
else
{
sa0 = pool_elt_at_index (im->sad, t->input_sa_index);
- icv_len = em->esp_integ_algs[sa0->integ_alg].trunc_size;
+ icv_len =
+ em->ipsec_proto_main_integ_algs[sa0->
+ integ_alg].trunc_size;
/* length = packet length - ESP/tunnel overhead */
n_bytes -= n_packets * (sizeof (ip4_header_t) +
if (last_t)
{
sa0 = pool_elt_at_index (im->sad, last_t->input_sa_index);
- icv_len = em->esp_integ_algs[sa0->integ_alg].trunc_size;
+ icv_len = em->ipsec_proto_main_integ_algs[sa0->integ_alg].trunc_size;
n_bytes -= n_packets * (sizeof (ip4_header_t) + sizeof (esp_header_t) +
sizeof (esp_footer_t) + 16 /* aes-cbc IV */ +
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/esp.h>
+#include <vnet/ipsec/ah.h>
#define foreach_ipsec_input_error \
_(RX_PKTS, "IPSEC pkts received") \
vlib_buffer_t *b0;
ip4_header_t *ip0;
esp_header_t *esp0;
+ ah_header_t *ah0;
ip4_ipsec_config_t *c0;
ipsec_spd_t *spd0;
ipsec_policy_t *p0 = 0;
spd0 = pool_elt_at_index (im->spds, c0->spd_index);
ip0 = vlib_buffer_get_current (b0);
- esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
if (PREDICT_TRUE (ip0->protocol == IP_PROTOCOL_IPSEC_ESP))
{
clib_net_to_host_u16 (ip0->length), spd0->id);
#endif
+ esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
p0 = ipsec_input_protect_policy_match (spd0,
clib_net_to_host_u32
(ip0->src_address.
vlib_buffer_advance (b0, ip4_header_bytes (ip0));
goto trace0;
}
+
+ /* FIXME bypass and discard */
+ trace0:
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ipsec_input_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ if (ip0->protocol == IP_PROTOCOL_IPSEC_ESP)
+ {
+ if (p0)
+ tr->sa_id = p0->sa_id;
+ tr->spi = clib_host_to_net_u32 (esp0->spi);
+ tr->seq = clib_host_to_net_u32 (esp0->seq);
+ }
+ }
+
}
- /* FIXME bypass and discard */
- trace0:
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ if (PREDICT_TRUE (ip0->protocol == IP_PROTOCOL_IPSEC_AH))
{
- ipsec_input_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- if (ip0->protocol == IP_PROTOCOL_IPSEC_ESP)
+ ah0 = (ah_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
+ p0 = ipsec_input_protect_policy_match (spd0,
+ clib_net_to_host_u32
+ (ip0->src_address.
+ as_u32),
+ clib_net_to_host_u32
+ (ip0->dst_address.
+ as_u32),
+ clib_net_to_host_u32
+ (ah0->spi));
+
+ if (PREDICT_TRUE (p0 != 0))
{
- if (p0)
- tr->sa_id = p0->sa_id;
- tr->spi = clib_host_to_net_u32 (esp0->spi);
- tr->seq = clib_host_to_net_u32 (esp0->seq);
+ p0->counter.packets++;
+ p0->counter.bytes += clib_net_to_host_u16 (ip0->length);
+ vnet_buffer (b0)->ipsec.sad_index = p0->sa_index;
+ vnet_buffer (b0)->ipsec.flags = 0;
+ next0 = im->ah_decrypt_next_index;
+ goto trace1;
+ }
+ /* FIXME bypass and discard */
+ trace1:
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ipsec_input_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ if (ip0->protocol == IP_PROTOCOL_IPSEC_ESP)
+ {
+ if (p0)
+ tr->sa_id = p0->sa_id;
+ tr->spi = clib_host_to_net_u32 (ah0->spi);
+ tr->seq = clib_host_to_net_u32 (ah0->seq_no);
+ }
}
}
{
if (p0->policy == IPSEC_POLICY_ACTION_PROTECT)
{
+ u32 sa_index = 0;
+ ipsec_sa_t *sa = 0;
nc_protect++;
- next_node_index = im->esp_encrypt_node_index;
+ sa_index = ipsec_get_sa_index_by_sa_id (p0->sa_id);
+ sa = pool_elt_at_index (im->sad, sa_index);
+ if (sa->protocol == IPSEC_PROTOCOL_ESP)
+ next_node_index = im->esp_encrypt_node_index;
+ else
+ next_node_index = im->ah_encrypt_node_index;
vnet_buffer (b0)->ipsec.sad_index = p0->sa_index;
vlib_buffer_advance (b0, iph_offset);
p0->counter.packets++;
Code Review / vpp.git / commitdiff