#include <vnet/api_errno.h>
#include <vnet/ip/ip.h>
#include <vnet/fib/fib.h>
+#include <vnet/udp/udp.h>
+#include <vnet/adj/adj_midchain.h>
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/esp.h>
#define foreach_ipsec_if_tx_error \
_(TX, "good packets transmitted")
-static char *ipsec_if_tx_error_strings[] = {
-#define _(sym,string) string,
- foreach_ipsec_if_tx_error
-#undef _
-};
-
-typedef enum
-{
-#define _(sym,str) IPSEC_IF_OUTPUT_ERROR_##sym,
- foreach_ipsec_if_tx_error
-#undef _
- IPSEC_IF_TX_N_ERROR,
-} ipsec_if_tx_error_t;
-
-typedef struct
-{
- u32 spi;
- u32 seq;
-} ipsec_if_tx_trace_t;
-
-u8 *
-format_ipsec_if_tx_trace (u8 * s, va_list * args)
+static void
+ipsec_if_tunnel_stack (adj_index_t ai)
{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- ipsec_if_tx_trace_t *t = va_arg (*args, ipsec_if_tx_trace_t *);
+ ipsec_main_t *ipm = &ipsec_main;
+ ipsec_tunnel_if_t *it;
+ ip_adjacency_t *adj;
+ u32 sw_if_index;
- s = format (s, "IPSec: spi %u seq %u", t->spi, t->seq);
- return s;
-}
+ adj = adj_get (ai);
+ sw_if_index = adj->rewrite_header.sw_if_index;
-static void
-ipsec_output_trace (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame, const ipsec_tunnel_if_t * t0)
-{
- ipsec_main_t *im = &ipsec_main;
- u32 *from, n_left;
+ if ((vec_len (ipm->ipsec_if_by_sw_if_index) <= sw_if_index) ||
+ (~0 == ipm->ipsec_if_by_sw_if_index[sw_if_index]))
+ return;
- n_left = frame->n_vectors;
- from = vlib_frame_vector_args (frame);
+ it = pool_elt_at_index (ipm->tunnel_interfaces,
+ ipm->ipsec_if_by_sw_if_index[sw_if_index]);
- while (n_left > 0)
+ if (!vnet_hw_interface_is_link_up (vnet_get_main (), it->hw_if_index))
{
- vlib_buffer_t *b0;
+ adj_midchain_delegate_unstack (ai);
+ }
+ else
+ {
+ ipsec_sa_t *sa;
- b0 = vlib_get_buffer (vm, from[0]);
+ sa = ipsec_sa_get (it->output_sa_index);
- if (b0->flags & VLIB_BUFFER_IS_TRACED)
- {
- ipsec_if_tx_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- ipsec_sa_t *sa0 = pool_elt_at_index (im->sad, t0->output_sa_index);
- tr->spi = sa0->spi;
- tr->seq = sa0->seq;
- }
+ /* *INDENT-OFF* */
+ fib_prefix_t pfx = {
+ .fp_addr = sa->tunnel_dst_addr,
+ .fp_len = (ipsec_sa_is_set_IS_TUNNEL_V6(sa) ? 128 : 32),
+ .fp_proto = (ipsec_sa_is_set_IS_TUNNEL_V6(sa) ?
+ FIB_PROTOCOL_IP6 :
+ FIB_PROTOCOL_IP4),
+ };
+ /* *INDENT-ON* */
- from += 1;
- n_left -= 1;
+ adj_midchain_delegate_stack (ai, sa->tx_fib_index, &pfx);
}
}
-VNET_DEVICE_CLASS_TX_FN (ipsec_device_class) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+/**
+ * @brief Call back when restacking all adjacencies on a GRE interface
+ */
+static adj_walk_rc_t
+ipsec_if_adj_walk_cb (adj_index_t ai, void *ctx)
{
- ipsec_main_t *im = &ipsec_main;
- u32 *from, n_left;
- vnet_interface_output_runtime_t *rd = (void *) node->runtime_data;
- const ipsec_tunnel_if_t *t0;
- vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
- u16 nexts[VLIB_FRAME_SIZE];
-
- from = vlib_frame_vector_args (frame);
- t0 = pool_elt_at_index (im->tunnel_interfaces, rd->dev_instance);
- n_left = frame->n_vectors;
- b = bufs;
-
- /* All going to encrypt */
- clib_memset (nexts, 0, sizeof (nexts));
-
- if (node->flags & VLIB_NODE_FLAG_TRACE)
- ipsec_output_trace (vm, node, frame, t0);
-
- vlib_get_buffers (vm, from, bufs, n_left);
+ ipsec_if_tunnel_stack (ai);
- while (n_left >= 8)
- {
- /* Prefetch the buffer header for the N+2 loop iteration */
- vlib_prefetch_buffer_header (b[4], STORE);
- vlib_prefetch_buffer_header (b[5], STORE);
- vlib_prefetch_buffer_header (b[6], STORE);
- vlib_prefetch_buffer_header (b[7], STORE);
-
- vnet_buffer (b[0])->ipsec.sad_index = t0->output_sa_index;
- vnet_buffer (b[1])->ipsec.sad_index = t0->output_sa_index;
- vnet_buffer (b[2])->ipsec.sad_index = t0->output_sa_index;
- vnet_buffer (b[3])->ipsec.sad_index = t0->output_sa_index;
-
- n_left -= 4;
- b += 4;
- }
- while (n_left > 0)
- {
- vnet_buffer (b[0])->ipsec.sad_index = t0->output_sa_index;
-
- n_left -= 1;
- b += 1;
- }
-
- vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
-
- return frame->n_vectors;
+ return (ADJ_WALK_RC_CONTINUE);
}
+static void
+ipsec_if_tunnel_restack (ipsec_tunnel_if_t * it)
+{
+ fib_protocol_t proto;
+
+ /*
+ * walk all the adjacencies on th GRE interface and restack them
+ */
+ FOR_EACH_FIB_IP_PROTOCOL (proto)
+ {
+ adj_nbr_walk (it->sw_if_index, proto, ipsec_if_adj_walk_cb, NULL);
+ }
+}
static clib_error_t *
ipsec_admin_up_down_function (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
return err;
}
- return /* no error */ 0;
+ ipsec_if_tunnel_restack (t);
+
+ return (NULL);
}
+static u8 *
+ipsec_if_build_rewrite (vnet_main_t * vnm,
+ u32 sw_if_index,
+ vnet_link_t link_type, const void *dst_address)
+{
+ return (NULL);
+}
+
+static void
+ipsec_if_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
+{
+ adj_nbr_midchain_update_rewrite
+ (ai, NULL, NULL, ADJ_FLAG_MIDCHAIN_IP_STACK,
+ ipsec_if_build_rewrite (vnm, sw_if_index, adj_get_link_type (ai), NULL));
+
+ ipsec_if_tunnel_stack (ai);
+}
/* *INDENT-OFF* */
VNET_DEVICE_CLASS (ipsec_device_class) =
{
.name = "IPSec",
.format_device_name = format_ipsec_name,
- .format_tx_trace = format_ipsec_if_tx_trace,
- .tx_function_n_errors = IPSEC_IF_TX_N_ERROR,
- .tx_function_error_strings = ipsec_if_tx_error_strings,
.admin_up_down_function = ipsec_admin_up_down_function,
};
/* *INDENT-ON* */
{
.name = "IPSec",
.build_rewrite = default_build_rewrite,
+ .update_adjacency = ipsec_if_update_adj,
.flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
};
/* *INDENT-ON* */
u32 hw_if_index = ~0;
uword *p;
u32 dev_instance;
- u32 slot;
ipsec_key_t crypto_key, integ_key;
ipsec_sa_flags_t flags;
int rv;
+ int is_ip6 = args->is_ip6;
+ ipsec4_tunnel_key_t key4;
+ ipsec6_tunnel_key_t key6;
- u64 key = ((u64) args->remote_ip.ip4.as_u32 << 32 |
- (u64) clib_host_to_net_u32 (args->remote_spi));
- p = hash_get (im->ipsec_if_pool_index_by_key, key);
+ if (!is_ip6)
+ {
+ key4.remote_ip = args->remote_ip.ip4.as_u32;
+ key4.spi = clib_host_to_net_u32 (args->remote_spi);
+ p = hash_get (im->ipsec4_if_pool_index_by_key, key4.as_u64);
+ }
+ else
+ {
+ key6.remote_ip = args->remote_ip.ip6;
+ key6.spi = clib_host_to_net_u32 (args->remote_spi);
+ p = hash_get_mem (im->ipsec6_if_pool_index_by_key, &key6);
+ }
if (args->is_add)
{
dev_instance);
flags = IPSEC_SA_FLAG_IS_TUNNEL;
+ if (args->is_ip6)
+ flags |= IPSEC_SA_FLAG_IS_TUNNEL_V6;
if (args->udp_encap)
flags |= IPSEC_SA_FLAG_UDP_ENCAP;
if (args->esn)
- flags |= IPSEC_SA_FLAG_USE_EXTENDED_SEQ_NUM;
+ flags |= IPSEC_SA_FLAG_USE_ESN;
if (args->anti_replay)
flags |= IPSEC_SA_FLAG_USE_ANTI_REPLAY;
&args->local_ip, &t->input_sa_index);
if (rv)
- return VNET_API_ERROR_UNIMPLEMENTED;
+ return VNET_API_ERROR_INVALID_SRC_ADDRESS;
ipsec_mk_key (&crypto_key,
args->local_crypto_key, args->local_crypto_key_len);
&args->remote_ip, &t->output_sa_index);
if (rv)
- return VNET_API_ERROR_UNIMPLEMENTED;
+ return VNET_API_ERROR_INVALID_DST_ADDRESS;
- hash_set (im->ipsec_if_pool_index_by_key, key,
- t - im->tunnel_interfaces);
+ /* copy the key */
+ if (is_ip6)
+ hash_set_mem_alloc (&im->ipsec6_if_pool_index_by_key, &key6,
+ t - im->tunnel_interfaces);
+ else
+ hash_set (im->ipsec4_if_pool_index_by_key, key4.as_u64,
+ t - im->tunnel_interfaces);
hw_if_index = vnet_register_interface (vnm, ipsec_device_class.index,
t - im->tunnel_interfaces,
t - im->tunnel_interfaces);
hi = vnet_get_hw_interface (vnm, hw_if_index);
- /* add esp4 as the next-node-index of this tx-node */
-
- slot = vlib_node_add_next_with_slot
- (vnm->vlib_main, hi->tx_node_index, im->esp4_encrypt_node_index, 0);
-
- ASSERT (slot == 0);
t->hw_if_index = hw_if_index;
t->sw_if_index = hi->sw_if_index;
- vnet_feature_enable_disable ("interface-output", "ipsec-if-output",
- hi->sw_if_index, 1, 0, 0);
+ /* Add the new tunnel to the DB of tunnels per sw_if_index ... */
+ vec_validate_init_empty (im->ipsec_if_by_sw_if_index, t->sw_if_index,
+ ~0);
+ im->ipsec_if_by_sw_if_index[t->sw_if_index] = dev_instance;
+
+ vnet_feature_enable_disable ("ip4-output",
+ "esp4-encrypt-tun",
+ t->sw_if_index, 1,
+ &t->output_sa_index,
+ sizeof (t->output_sa_index));
+ vnet_feature_enable_disable ("ip6-output",
+ "esp6-encrypt-tun",
+ t->sw_if_index, 1,
+ &t->output_sa_index,
+ sizeof (t->output_sa_index));
/*1st interface, register protocol */
if (pool_elts (im->tunnel_interfaces) == 1)
- ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP,
- ipsec_if_input_node.index);
+ {
+ ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP,
+ ipsec4_if_input_node.index);
+ ip6_register_protocol (IP_PROTOCOL_IPSEC_ESP,
+ ipsec6_if_input_node.index);
+ }
}
else
{
+ u32 ti;
+
/* check if exists */
if (!p)
return VNET_API_ERROR_INVALID_VALUE;
- t = pool_elt_at_index (im->tunnel_interfaces, p[0]);
+ ti = p[0];
+ t = pool_elt_at_index (im->tunnel_interfaces, ti);
hi = vnet_get_hw_interface (vnm, t->hw_if_index);
vnet_sw_interface_set_flags (vnm, hi->sw_if_index, 0); /* admin down */
- vnet_feature_enable_disable ("interface-output", "ipsec-if-output",
- hi->sw_if_index, 0, 0, 0);
-
+ vnet_feature_enable_disable ("ip4-output",
+ "esp4-encrypt-tun",
+ hi->sw_if_index, 0,
+ &t->output_sa_index,
+ sizeof (t->output_sa_index));
+ vnet_feature_enable_disable ("ip6-output",
+ "esp6-encrypt-tun",
+ hi->sw_if_index, 0,
+ &t->output_sa_index,
+ sizeof (t->output_sa_index));
vnet_delete_hw_interface (vnm, t->hw_if_index);
- hash_unset (im->ipsec_if_pool_index_by_key, key);
+ if (is_ip6)
+ hash_unset_mem_free (&im->ipsec6_if_pool_index_by_key, &key6);
+ else
+ hash_unset (im->ipsec4_if_pool_index_by_key, key4.as_u64);
+
hash_unset (im->ipsec_if_real_dev_by_show_dev, t->show_instance);
+ im->ipsec_if_by_sw_if_index[t->sw_if_index] = ~0;
pool_put (im->tunnel_interfaces, t);
/* delete input and output SA */
- ipsec_sa_del (ipsec_tun_mk_input_sa_id (p[0]));
- ipsec_sa_del (ipsec_tun_mk_output_sa_id (p[0]));
+ ipsec_sa_del (ipsec_tun_mk_input_sa_id (ti));
+ ipsec_sa_del (ipsec_tun_mk_output_sa_id (ti));
}
if (sw_if_index)
ipsec_main_t *im = &ipsec_main;
uword *p;
ipsec_sa_t *sa;
- u64 key;
+ ipsec4_tunnel_key_t key;
u32 isa, osa;
p = hash_get (im->sa_index_by_sa_id, args->local_sa_id);
osa = p[0];
sa = pool_elt_at_index (im->sad, p[0]);
- if (sa->is_tunnel)
- key = ((u64) sa->tunnel_dst_addr.ip4.as_u32 << 32 |
- (u64) clib_host_to_net_u32 (sa->spi));
+ if (ipsec_sa_is_set_IS_TUNNEL (sa))
+ {
+ key.remote_ip = sa->tunnel_dst_addr.ip4.as_u32;
+ key.spi = clib_host_to_net_u32 (sa->spi);
+ }
else
- key = ((u64) args->remote_ip.as_u32 << 32 |
- (u64) clib_host_to_net_u32 (sa->spi));
+ {
+ key.remote_ip = args->remote_ip.as_u32;
+ key.spi = clib_host_to_net_u32 (sa->spi);
+ }
- p = hash_get (im->ipsec_if_pool_index_by_key, key);
+ p = hash_get (im->ipsec4_if_pool_index_by_key, key.as_u64);
if (args->is_add)
{
t->input_sa_index = isa;
t->output_sa_index = osa;
t->hw_if_index = ~0;
- hash_set (im->ipsec_if_pool_index_by_key, key,
+ hash_set (im->ipsec4_if_pool_index_by_key, key.as_u64,
t - im->tunnel_interfaces);
/*1st interface, register protocol */
if (pool_elts (im->tunnel_interfaces) == 1)
- ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP,
- ipsec_if_input_node.index);
+ {
+ ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP,
+ ipsec4_if_input_node.index);
+ /* TBD, GRE IPSec6
+ *
+ ip6_register_protocol (IP_PROTOCOL_IPSEC_ESP,
+ ipsec6_if_input_node.index);
+ */
+ }
}
else
{
return VNET_API_ERROR_INVALID_VALUE;
t = pool_elt_at_index (im->tunnel_interfaces, p[0]);
- hash_unset (im->ipsec_if_pool_index_by_key, key);
+ hash_unset (im->ipsec4_if_pool_index_by_key, key.as_u64);
pool_put (im->tunnel_interfaces, t);
}
return 0;
if (type == IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO)
{
sa = pool_elt_at_index (im->sad, t->output_sa_index);
- sa->crypto_alg = alg;
+ ipsec_sa_set_crypto_alg (sa, alg);
ipsec_mk_key (&sa->crypto_key, key, vec_len (key));
}
else if (type == IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG)
{
sa = pool_elt_at_index (im->sad, t->output_sa_index);
- sa->integ_alg = alg;
+ ipsec_sa_set_integ_alg (sa, alg);
ipsec_mk_key (&sa->integ_key, key, vec_len (key));
}
else if (type == IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO)
{
sa = pool_elt_at_index (im->sad, t->input_sa_index);
- sa->crypto_alg = alg;
+ ipsec_sa_set_crypto_alg (sa, alg);
ipsec_mk_key (&sa->crypto_key, key, vec_len (key));
}
else if (type == IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG)
{
sa = pool_elt_at_index (im->sad, t->input_sa_index);
- sa->integ_alg = alg;
+ ipsec_sa_set_integ_alg (sa, alg);
ipsec_mk_key (&sa->integ_key, key, vec_len (key));
}
else
}
sa = pool_elt_at_index (im->sad, sa_index);
- if (sa->is_tunnel_ip6)
- {
- clib_warning ("IPsec interface not supported with IPv6 endpoints");
- return VNET_API_ERROR_UNIMPLEMENTED;
- }
if (!is_outbound)
{
- u64 key;
-
old_sa_index = t->input_sa_index;
old_sa = pool_elt_at_index (im->sad, old_sa_index);
- /* unset old inbound hash entry. packets should stop arriving */
- key = ((u64) old_sa->tunnel_src_addr.ip4.as_u32 << 32 |
- (u64) clib_host_to_net_u32 (old_sa->spi));
- p = hash_get (im->ipsec_if_pool_index_by_key, key);
- if (p)
- hash_unset (im->ipsec_if_pool_index_by_key, key);
+ if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ^
+ ipsec_sa_is_set_IS_TUNNEL_V6 (old_sa))
+ {
+ clib_warning ("IPsec interface SA endpoints type can't be changed");
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+
+ if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa))
+ {
+ ipsec6_tunnel_key_t key;
+
+ /* unset old inbound hash entry. packets should stop arriving */
+ key.remote_ip = old_sa->tunnel_src_addr.ip6;
+ key.spi = clib_host_to_net_u32 (old_sa->spi);
- /* set new inbound SA, then set new hash entry */
- t->input_sa_index = sa_index;
- key = ((u64) sa->tunnel_src_addr.ip4.as_u32 << 32 |
- (u64) clib_host_to_net_u32 (sa->spi));
- hash_set (im->ipsec_if_pool_index_by_key, key, hi->dev_instance);
+ p = hash_get_mem (im->ipsec6_if_pool_index_by_key, &key);
+ if (p)
+ hash_unset_mem_free (&im->ipsec6_if_pool_index_by_key, &key);
+
+ /* set new inbound SA, then set new hash entry */
+ t->input_sa_index = sa_index;
+ key.remote_ip = sa->tunnel_src_addr.ip6;
+ key.spi = clib_host_to_net_u32 (sa->spi);
+
+ hash_set_mem_alloc (&im->ipsec6_if_pool_index_by_key, &key,
+ hi->dev_instance);
+ }
+ else
+ {
+ ipsec4_tunnel_key_t key;
+
+ /* unset old inbound hash entry. packets should stop arriving */
+ key.remote_ip = old_sa->tunnel_src_addr.ip4.as_u32;
+ key.spi = clib_host_to_net_u32 (old_sa->spi);
+
+ p = hash_get (im->ipsec4_if_pool_index_by_key, key.as_u64);
+ if (p)
+ hash_unset (im->ipsec4_if_pool_index_by_key, key.as_u64);
+
+ /* set new inbound SA, then set new hash entry */
+ t->input_sa_index = sa_index;
+ key.remote_ip = sa->tunnel_src_addr.ip4.as_u32;
+ key.spi = clib_host_to_net_u32 (sa->spi);
+
+ hash_set (im->ipsec4_if_pool_index_by_key, key.as_u64,
+ hi->dev_instance);
+ }
}
else
{
old_sa_index = t->output_sa_index;
old_sa = pool_elt_at_index (im->sad, old_sa_index);
+
+ if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ^
+ ipsec_sa_is_set_IS_TUNNEL_V6 (old_sa))
+ {
+ clib_warning ("IPsec interface SA endpoints type can't be changed");
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+
t->output_sa_index = sa_index;
}
return 0;
}
+
clib_error_t *
ipsec_tunnel_if_init (vlib_main_t * vm)
{
ipsec_main_t *im = &ipsec_main;
- im->ipsec_if_pool_index_by_key = hash_create (0, sizeof (uword));
+ /* initialize the ipsec-if ip4 hash */
+ im->ipsec4_if_pool_index_by_key =
+ hash_create (0, sizeof (ipsec4_tunnel_key_t));
+ /* initialize the ipsec-if ip6 hash */
+ im->ipsec6_if_pool_index_by_key = hash_create_mem (0,
+ sizeof
+ (ipsec6_tunnel_key_t),
+ sizeof (uword));
im->ipsec_if_real_dev_by_show_dev = hash_create (0, sizeof (uword));
+ udp_register_dst_port (vm, UDP_DST_PORT_ipsec, ipsec4_if_input_node.index,
+ 1);
return 0;
}
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