#include <vnet/vnet.h>
#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>
format_ipsec_name (u8 * s, va_list * args)
{
u32 dev_instance = va_arg (*args, u32);
- return format (s, "ipsec%d", dev_instance);
+ ipsec_main_t *im = &ipsec_main;
+ ipsec_tunnel_if_t *t = im->tunnel_interfaces + dev_instance;
+
+ return format (s, "ipsec%d", t->show_instance);
+}
+
+/* Statistics (not really errors) */
+#define foreach_ipsec_if_tx_error \
+_(TX, "good packets transmitted")
+
+static void
+ipsec_if_tunnel_stack (adj_index_t ai)
+{
+ ipsec_main_t *ipm = &ipsec_main;
+ ipsec_tunnel_if_t *it;
+ ip_adjacency_t *adj;
+ u32 sw_if_index;
+
+ adj = adj_get (ai);
+ sw_if_index = adj->rewrite_header.sw_if_index;
+
+ 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;
+
+ it = pool_elt_at_index (ipm->tunnel_interfaces,
+ ipm->ipsec_if_by_sw_if_index[sw_if_index]);
+
+ if (!vnet_hw_interface_is_link_up (vnet_get_main (), it->hw_if_index))
+ {
+ adj_midchain_delegate_unstack (ai);
+ }
+ else
+ {
+ ipsec_sa_t *sa;
+
+ sa = ipsec_sa_get (it->output_sa_index);
+
+ /* *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* */
+
+ adj_midchain_delegate_stack (ai, sa->tx_fib_index, &pfx);
+ }
+}
+
+/**
+ * @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_if_tunnel_stack (ai);
+
+ return (ADJ_WALK_RC_CONTINUE);
}
-static uword
-dummy_interface_tx (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+static void
+ipsec_if_tunnel_restack (ipsec_tunnel_if_t * it)
{
- clib_warning ("you shouldn't be here, leaking buffers...");
- return frame->n_vectors;
+ 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_sa_t *sa;
hi = vnet_get_hw_interface (vnm, hw_if_index);
+ t = pool_elt_at_index (im->tunnel_interfaces, hi->hw_instance);
+ t->flags = flags;
+
if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
{
- t = pool_elt_at_index (im->tunnel_interfaces, hi->hw_instance);
- ASSERT (im->cb.check_support_cb);
sa = pool_elt_at_index (im->sad, t->input_sa_index);
- err = im->cb.check_support_cb (sa);
+
+ err = ipsec_check_support_cb (im, sa);
+ if (err)
+ return err;
+
+ err = ipsec_add_del_sa_sess_cb (im, t->input_sa_index, 1);
if (err)
return err;
sa = pool_elt_at_index (im->sad, t->output_sa_index);
- err = im->cb.check_support_cb (sa);
+
+ err = ipsec_check_support_cb (im, sa);
+ if (err)
+ return err;
+
+ err = ipsec_add_del_sa_sess_cb (im, t->output_sa_index, 1);
if (err)
return err;
- vnet_sw_interface_set_flags (vnm, hi->sw_if_index,
+ vnet_hw_interface_set_flags (vnm, hw_if_index,
VNET_HW_INTERFACE_FLAG_LINK_UP);
}
else
- vnet_sw_interface_set_flags (vnm, hi->sw_if_index, 0 /* down */ );
+ {
+ vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */ );
+ sa = pool_elt_at_index (im->sad, t->input_sa_index);
+ err = ipsec_add_del_sa_sess_cb (im, t->input_sa_index, 0);
+ if (err)
+ return err;
+ sa = pool_elt_at_index (im->sad, t->output_sa_index);
+ err = ipsec_add_del_sa_sess_cb (im, t->output_sa_index, 0);
+ if (err)
+ 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, static) =
+VNET_DEVICE_CLASS (ipsec_device_class) =
{
.name = "IPSec",
.format_device_name = format_ipsec_name,
- .format_tx_trace = format_ipsec_if_output_trace,
- .tx_function = dummy_interface_tx,
.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* */
-static int
-ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm,
- ipsec_add_del_tunnel_args_t * args);
-
static int
ipsec_add_del_tunnel_if_rpc_callback (ipsec_add_del_tunnel_args_t * a)
{
vnet_main_t *vnm = vnet_get_main ();
- ASSERT (os_get_cpu_number () == 0);
+ ASSERT (vlib_get_thread_index () == 0);
- return ipsec_add_del_tunnel_if_internal (vnm, a);
+ return ipsec_add_del_tunnel_if_internal (vnm, a, NULL);
}
int
return 0;
}
+static u32
+ipsec_tun_mk_input_sa_id (u32 ti)
+{
+ return (0x80000000 | ti);
+}
+
+static u32
+ipsec_tun_mk_output_sa_id (u32 ti)
+{
+ return (0xc0000000 | ti);
+}
+
int
ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm,
- ipsec_add_del_tunnel_args_t * args)
+ ipsec_add_del_tunnel_args_t * args,
+ u32 * sw_if_index)
{
ipsec_tunnel_if_t *t;
ipsec_main_t *im = &ipsec_main;
- vnet_hw_interface_t *hi;
+ vnet_hw_interface_t *hi = NULL;
u32 hw_if_index = ~0;
uword *p;
- ipsec_sa_t *sa;
-
- u64 key = (u64) args->remote_ip.as_u32 << 32 | (u64) args->remote_spi;
- p = hash_get (im->ipsec_if_pool_index_by_key, key);
+ u32 dev_instance;
+ 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;
+
+ 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)
{
if (p)
return VNET_API_ERROR_INVALID_VALUE;
- pool_get_aligned (im->tunnel_interfaces, t, CLIB_CACHE_LINE_BYTES);
- memset (t, 0, sizeof (*t));
-
- pool_get (im->sad, sa);
- memset (sa, 0, sizeof (*sa));
- t->input_sa_index = sa - im->sad;
- sa->spi = args->remote_spi;
- sa->tunnel_src_addr.ip4.as_u32 = args->remote_ip.as_u32;
- sa->tunnel_dst_addr.ip4.as_u32 = args->local_ip.as_u32;
- sa->is_tunnel = 1;
- sa->use_esn = args->esn;
- sa->use_anti_replay = args->anti_replay;
- sa->integ_alg = args->integ_alg;
- if (args->remote_integ_key_len <= sizeof (args->remote_integ_key))
- {
- sa->integ_key_len = args->remote_integ_key_len;
- clib_memcpy (sa->integ_key, args->remote_integ_key,
- args->remote_integ_key_len);
- }
- sa->crypto_alg = args->crypto_alg;
- if (args->remote_crypto_key_len <= sizeof (args->remote_crypto_key))
- {
- sa->crypto_key_len = args->remote_crypto_key_len;
- clib_memcpy (sa->crypto_key, args->remote_crypto_key,
- args->remote_crypto_key_len);
- }
+ pool_get_aligned_zero (im->tunnel_interfaces, t, CLIB_CACHE_LINE_BYTES);
- if (im->cb.add_del_sa_sess_cb &&
- im->cb.add_del_sa_sess_cb (t->input_sa_index, args->is_add) < 0)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
-
- pool_get (im->sad, sa);
- memset (sa, 0, sizeof (*sa));
- t->output_sa_index = sa - im->sad;
- sa->spi = args->local_spi;
- sa->tunnel_src_addr.ip4.as_u32 = args->local_ip.as_u32;
- sa->tunnel_dst_addr.ip4.as_u32 = args->remote_ip.as_u32;
- sa->is_tunnel = 1;
- sa->seq = 1;
- sa->use_esn = args->esn;
- sa->use_anti_replay = args->anti_replay;
- sa->integ_alg = args->integ_alg;
- if (args->local_integ_key_len <= sizeof (args->local_integ_key))
- {
- sa->integ_key_len = args->local_integ_key_len;
- clib_memcpy (sa->integ_key, args->local_integ_key,
- args->local_integ_key_len);
- }
- sa->crypto_alg = args->crypto_alg;
- if (args->local_crypto_key_len <= sizeof (args->local_crypto_key))
+ dev_instance = t - im->tunnel_interfaces;
+ if (args->renumber)
+ t->show_instance = args->show_instance;
+ else
+ t->show_instance = dev_instance;
+
+ if (hash_get (im->ipsec_if_real_dev_by_show_dev, t->show_instance))
{
- sa->crypto_key_len = args->local_crypto_key_len;
- clib_memcpy (sa->crypto_key, args->local_crypto_key,
- args->local_crypto_key_len);
+ pool_put (im->tunnel_interfaces, t);
+ return VNET_API_ERROR_INSTANCE_IN_USE;
}
- if (im->cb.add_del_sa_sess_cb &&
- im->cb.add_del_sa_sess_cb (t->output_sa_index, args->is_add) < 0)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
+ hash_set (im->ipsec_if_real_dev_by_show_dev, t->show_instance,
+ 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_ESN;
+ if (args->anti_replay)
+ flags |= IPSEC_SA_FLAG_USE_ANTI_REPLAY;
+
+ ipsec_mk_key (&crypto_key,
+ args->remote_crypto_key, args->remote_crypto_key_len);
+ ipsec_mk_key (&integ_key,
+ args->remote_integ_key, args->remote_integ_key_len);
+
+ rv = ipsec_sa_add (ipsec_tun_mk_input_sa_id (dev_instance),
+ args->remote_spi,
+ IPSEC_PROTOCOL_ESP,
+ args->crypto_alg,
+ &crypto_key,
+ args->integ_alg,
+ &integ_key,
+ flags,
+ args->tx_table_id,
+ &args->remote_ip,
+ &args->local_ip, &t->input_sa_index);
+
+ if (rv)
+ return VNET_API_ERROR_INVALID_SRC_ADDRESS;
+
+ ipsec_mk_key (&crypto_key,
+ args->local_crypto_key, args->local_crypto_key_len);
+ ipsec_mk_key (&integ_key,
+ args->local_integ_key, args->local_integ_key_len);
+
+ rv = ipsec_sa_add (ipsec_tun_mk_output_sa_id (dev_instance),
+ args->local_spi,
+ IPSEC_PROTOCOL_ESP,
+ args->crypto_alg,
+ &crypto_key,
+ args->integ_alg,
+ &integ_key,
+ flags,
+ args->tx_table_id,
+ &args->local_ip,
+ &args->remote_ip, &t->output_sa_index);
+
+ if (rv)
+ return VNET_API_ERROR_INVALID_DST_ADDRESS;
+
+ /* 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);
- hash_set (im->ipsec_if_pool_index_by_key, key,
- t - im->tunnel_interfaces);
+ hw_if_index = vnet_register_interface (vnm, ipsec_device_class.index,
+ t - im->tunnel_interfaces,
+ ipsec_hw_class.index,
+ t - im->tunnel_interfaces);
+
+ hi = vnet_get_hw_interface (vnm, hw_if_index);
- if (vec_len (im->free_tunnel_if_indices) > 0)
- {
- hw_if_index =
- im->free_tunnel_if_indices[vec_len (im->free_tunnel_if_indices) -
- 1];
- _vec_len (im->free_tunnel_if_indices) -= 1;
- }
- else
- {
- hw_if_index =
- vnet_register_interface (vnm, ipsec_device_class.index,
- t - im->tunnel_interfaces,
- ipsec_hw_class.index,
- t - im->tunnel_interfaces);
-
- hi = vnet_get_hw_interface (vnm, hw_if_index);
- hi->output_node_index = ipsec_if_output_node.index;
- }
t->hw_if_index = hw_if_index;
+ t->sw_if_index = hi->sw_if_index;
+
+ /* Standard default jumbo MTU. */
+ vnet_sw_interface_set_mtu (vnm, t->sw_if_index, 9000);
+
+ /* 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);
+ }
- return hw_if_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 */
- vec_add1 (im->free_tunnel_if_indices, t->hw_if_index);
- /* delete input and output SA */
- sa = pool_elt_at_index (im->sad, t->input_sa_index);
-
- if (im->cb.add_del_sa_sess_cb &&
- im->cb.add_del_sa_sess_cb (t->input_sa_index, args->is_add) < 0)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
+ 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);
+
+ 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);
- pool_put (im->sad, sa);
+ 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;
- sa = pool_elt_at_index (im->sad, t->output_sa_index);
+ pool_put (im->tunnel_interfaces, t);
- if (im->cb.add_del_sa_sess_cb &&
- im->cb.add_del_sa_sess_cb (t->output_sa_index, args->is_add) < 0)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
+ /* delete input and output SA */
+ ipsec_sa_del (ipsec_tun_mk_input_sa_id (ti));
+ ipsec_sa_del (ipsec_tun_mk_output_sa_id (ti));
+ }
- pool_put (im->sad, sa);
+ if (sw_if_index)
+ *sw_if_index = hi->sw_if_index;
- hash_unset (im->ipsec_if_pool_index_by_key, key);
- pool_put (im->tunnel_interfaces, t);
- }
return 0;
}
int
ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm,
- ipsec_add_del_ipsec_gre_tunnel_args_t * args)
+ const ipsec_gre_tunnel_add_del_args_t * args)
{
ipsec_tunnel_if_t *t = 0;
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);
if (!p)
return VNET_API_ERROR_INVALID_VALUE;
- isa = p[0];
+ osa = p[0];
+ sa = pool_elt_at_index (im->sad, p[0]);
+ ipsec_sa_set_IS_GRE (sa);
p = hash_get (im->sa_index_by_sa_id, args->remote_sa_id);
if (!p)
return VNET_API_ERROR_INVALID_VALUE;
- osa = p[0];
+ isa = p[0];
sa = pool_elt_at_index (im->sad, p[0]);
+ ipsec_sa_set_IS_GRE (sa);
- if (sa->is_tunnel)
- key = (u64) sa->tunnel_dst_addr.ip4.as_u32 << 32 | (u64) sa->spi;
+ /* we form the key from the input/remote SA whose tunnel is srouce
+ * at the remote end */
+ if (ipsec_sa_is_set_IS_TUNNEL (sa))
+ {
+ key.remote_ip = sa->tunnel_src_addr.ip4.as_u32;
+ key.spi = clib_host_to_net_u32 (sa->spi);
+ }
else
- key = (u64) args->remote_ip.as_u32 << 32 | (u64) sa->spi;
+ {
+ key.remote_ip = args->src.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)
{
return VNET_API_ERROR_INVALID_VALUE;
pool_get_aligned (im->tunnel_interfaces, t, CLIB_CACHE_LINE_BYTES);
- memset (t, 0, sizeof (*t));
+ clib_memset (t, 0, sizeof (*t));
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;
hi = vnet_get_hw_interface (vnm, hw_if_index);
t = pool_elt_at_index (im->tunnel_interfaces, hi->dev_instance);
+ if (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP)
+ return VNET_API_ERROR_SYSCALL_ERROR_1;
+
if (type == IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO)
{
sa = pool_elt_at_index (im->sad, t->output_sa_index);
- sa->crypto_alg = alg;
- sa->crypto_key_len = vec_len (key);
- clib_memcpy (sa->crypto_key, key, vec_len (key));
-
- if (im->cb.add_del_sa_sess_cb &&
- im->cb.add_del_sa_sess_cb (t->output_sa_index, 0) < 0)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
+ 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;
- sa->integ_key_len = vec_len (key);
- clib_memcpy (sa->integ_key, key, vec_len (key));
-
- if (im->cb.add_del_sa_sess_cb &&
- im->cb.add_del_sa_sess_cb (t->output_sa_index, 0) < 0)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
+ 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;
- sa->crypto_key_len = vec_len (key);
- clib_memcpy (sa->crypto_key, key, vec_len (key));
-
- if (im->cb.add_del_sa_sess_cb &&
- im->cb.add_del_sa_sess_cb (t->input_sa_index, 0) < 0)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
+ 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;
- sa->integ_key_len = vec_len (key);
- clib_memcpy (sa->integ_key, key, vec_len (key));
-
- if (im->cb.add_del_sa_sess_cb &&
- im->cb.add_del_sa_sess_cb (t->input_sa_index, 0) < 0)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
+ ipsec_sa_set_integ_alg (sa, alg);
+ ipsec_mk_key (&sa->integ_key, key, vec_len (key));
}
else
return VNET_API_ERROR_INVALID_VALUE;
}
+int
+ipsec_set_interface_sa (vnet_main_t * vnm, u32 hw_if_index, u32 sa_id,
+ u8 is_outbound)
+{
+ ipsec_main_t *im = &ipsec_main;
+ vnet_hw_interface_t *hi;
+ ipsec_tunnel_if_t *t;
+ ipsec_sa_t *sa, *old_sa;
+ u32 sa_index, old_sa_index;
+ uword *p;
+
+ hi = vnet_get_hw_interface (vnm, hw_if_index);
+ t = pool_elt_at_index (im->tunnel_interfaces, hi->dev_instance);
+
+ sa_index = ipsec_get_sa_index_by_sa_id (sa_id);
+ if (sa_index == ~0)
+ {
+ clib_warning ("SA with ID %u not found", sa_id);
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+
+ if (ipsec_is_sa_used (sa_index))
+ {
+ clib_warning ("SA with ID %u is already in use", sa_id);
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+
+ sa = pool_elt_at_index (im->sad, sa_index);
+
+ if (!is_outbound)
+ {
+ old_sa_index = t->input_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;
+ }
+
+ 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);
+
+ 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;
+ }
+
+ /* remove sa_id to sa_index mapping on old SA */
+ if (ipsec_get_sa_index_by_sa_id (old_sa->id) == old_sa_index)
+ hash_unset (im->sa_index_by_sa_id, old_sa->id);
+
+ if (ipsec_add_del_sa_sess_cb (im, old_sa_index, 0))
+ {
+ clib_warning ("IPsec backend add/del callback returned error");
+ return VNET_API_ERROR_SYSCALL_ERROR_1;
+ }
+ pool_put (im->sad, old_sa);
+
+ 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;
}
Code Review / vpp.git / blobdiff