#include <vnet/vnet.h>
#include <vnet/api_errno.h>
#include <vnet/ip/ip.h>
+#include <vnet/fib/fib.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 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)
+{
+ 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 *);
+
+ s = format (s, "IPSec: spi %u seq %u", t->spi, t->seq);
+ return s;
}
static uword
-dummy_interface_tx (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+ipsec_if_tx_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
{
- clib_warning ("you shouldn't be here, leaking buffers...");
- return frame->n_vectors;
+ ipsec_main_t *im = &ipsec_main;
+ vnet_main_t *vnm = im->vnet_main;
+ vnet_interface_main_t *vim = &vnm->interface_main;
+ u32 *from, *to_next = 0, next_index;
+ u32 n_left_from, sw_if_index0, last_sw_if_index = ~0;
+ u32 thread_index = vm->thread_index;
+ u32 n_bytes = 0, n_packets = 0;
+
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+ 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 bi0, next0, len0;
+ vlib_buffer_t *b0;
+ ipsec_tunnel_if_t *t0;
+ vnet_hw_interface_t *hi0;
+
+ bi0 = to_next[0] = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+ b0 = vlib_get_buffer (vm, bi0);
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ hi0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
+ t0 = pool_elt_at_index (im->tunnel_interfaces, hi0->dev_instance);
+ vnet_buffer (b0)->ipsec.sad_index = t0->output_sa_index;
+ next0 = IPSEC_OUTPUT_NEXT_ESP4_ENCRYPT;
+
+ len0 = vlib_buffer_length_in_chain (vm, b0);
+
+ if (PREDICT_TRUE (sw_if_index0 == last_sw_if_index))
+ {
+ n_packets++;
+ n_bytes += len0;
+ }
+ else
+ {
+ vlib_increment_combined_counter (vim->combined_sw_if_counters +
+ VNET_INTERFACE_COUNTER_TX,
+ thread_index, sw_if_index0,
+ n_packets, n_bytes);
+ last_sw_if_index = sw_if_index0;
+ n_packets = 1;
+ n_bytes = len0;
+ }
+
+ if (PREDICT_FALSE (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;
+ }
+
+ 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);
+ }
+
+ if (last_sw_if_index != ~0)
+ {
+ vlib_increment_combined_counter (vim->combined_sw_if_counters +
+ VNET_INTERFACE_COUNTER_TX,
+ thread_index,
+ last_sw_if_index, n_packets, n_bytes);
+ }
+
+ return from_frame->n_vectors;
}
+
static clib_error_t *
ipsec_admin_up_down_function (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
{
if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
{
- 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;
- if (im->cb.add_del_sa_sess_cb)
- {
- err = im->cb.add_del_sa_sess_cb (t->input_sa_index, 1);
- 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;
- if (im->cb.add_del_sa_sess_cb)
- {
- err = im->cb.add_del_sa_sess_cb (t->output_sa_index, 1);
- if (err)
- return err;
- }
+ err = ipsec_add_del_sa_sess_cb (im, t->output_sa_index, 1);
+ if (err)
+ return err;
vnet_hw_interface_set_flags (vnm, hw_if_index,
VNET_HW_INTERFACE_FLAG_LINK_UP);
else
{
vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */ );
-
sa = pool_elt_at_index (im->sad, t->input_sa_index);
-
- if (im->cb.add_del_sa_sess_cb)
- {
- err = im->cb.add_del_sa_sess_cb (t->input_sa_index, 0);
- if (err)
- return err;
- }
-
+ 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);
-
- if (im->cb.add_del_sa_sess_cb)
- {
- err = im->cb.add_del_sa_sess_cb (t->output_sa_index, 0);
- if (err)
- return err;
- }
+ err = ipsec_add_del_sa_sess_cb (im, t->output_sa_index, 0);
+ if (err)
+ return err;
}
return /* no error */ 0;
}
+
/* *INDENT-OFF* */
VNET_DEVICE_CLASS (ipsec_device_class, static) =
{
.name = "IPSec",
.format_device_name = format_ipsec_name,
- .format_tx_trace = format_ipsec_if_output_trace,
- .tx_function = dummy_interface_tx,
+ .format_tx_trace = format_ipsec_if_tx_trace,
+ .tx_function = ipsec_if_tx_node_fn,
+ .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* */
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,
vnet_hw_interface_t *hi = NULL;
u32 hw_if_index = ~0;
uword *p;
- ipsec_sa_t *sa;
+ u32 dev_instance;
+ u32 slot;
+ ipsec_key_t crypto_key, integ_key;
+ ipsec_sa_flags_t flags;
+ int rv;
- u64 key = (u64) args->remote_ip.as_u32 << 32 | (u64) args->remote_spi;
+ u64 key = (u64) args->remote_ip.ip4.as_u32 << 32 | (u64) args->remote_spi;
p = hash_get (im->ipsec_if_pool_index_by_key, key);
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));
-
- 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);
- }
+ clib_memset (t, 0, sizeof (*t));
- 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->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;
}
+ hash_set (im->ipsec_if_real_dev_by_show_dev, t->show_instance,
+ dev_instance);
+
+ flags = IPSEC_SA_FLAG_IS_TUNNEL;
+ if (args->udp_encap)
+ flags |= IPSEC_SA_FLAG_UDP_ENCAP;
+ if (args->esn)
+ flags |= IPSEC_SA_FLAG_USE_EXTENDED_SEQ_NUM;
+ 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_UNIMPLEMENTED;
+
+ 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_UNIMPLEMENTED;
+
hash_set (im->ipsec_if_pool_index_by_key, key,
t - im->tunnel_interfaces);
- 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);
- }
+ 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;
+
+ slot = vlib_node_add_next_with_slot
+ (vnm->vlib_main, hi->tx_node_index, im->esp4_encrypt_node_index,
+ IPSEC_OUTPUT_NEXT_ESP4_ENCRYPT);
+
+ ASSERT (slot == IPSEC_OUTPUT_NEXT_ESP4_ENCRYPT);
+
t->hw_if_index = hw_if_index;
+ vnet_feature_enable_disable ("interface-output", "ipsec-if-output",
+ hi->sw_if_index, 1, 0, 0);
+
/*1st interface, register protocol */
if (pool_elts (im->tunnel_interfaces) == 1)
ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP,
}
else
{
- vnet_interface_main_t *vim = &vnm->interface_main;
-
/* check if exists */
if (!p)
return VNET_API_ERROR_INVALID_VALUE;
t = pool_elt_at_index (im->tunnel_interfaces, p[0]);
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);
- vnet_interface_counter_lock (vim);
- vlib_zero_combined_counter (vim->combined_sw_if_counters +
- VNET_INTERFACE_COUNTER_TX, hi->sw_if_index);
- vlib_zero_combined_counter (vim->combined_sw_if_counters +
- VNET_INTERFACE_COUNTER_RX, hi->sw_if_index);
- vnet_interface_counter_unlock (vim);
+ vnet_feature_enable_disable ("interface-output", "ipsec-if-output",
+ hi->sw_if_index, 0, 0, 0);
- /* delete input and output SA */
- sa = pool_elt_at_index (im->sad, t->input_sa_index);
-
- pool_put (im->sad, sa);
-
- sa = pool_elt_at_index (im->sad, t->output_sa_index);
-
- pool_put (im->sad, sa);
+ vnet_delete_hw_interface (vnm, t->hw_if_index);
hash_unset (im->ipsec_if_pool_index_by_key, key);
+ hash_unset (im->ipsec_if_real_dev_by_show_dev, t->show_instance);
+
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]));
}
if (sw_if_index)
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;
{
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));
+ 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));
+ 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));
+ 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));
+ ipsec_mk_key (&sa->integ_key, key, vec_len (key));
}
else
return VNET_API_ERROR_INVALID_VALUE;
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 (im->cb.add_del_sa_sess_cb)
+ if (ipsec_add_del_sa_sess_cb (im, old_sa_index, 0))
{
- clib_error_t *err;
-
- err = im->cb.add_del_sa_sess_cb (old_sa_index, 0);
- if (err)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
+ clib_warning ("IPsec backend add/del callback returned error");
+ return VNET_API_ERROR_SYSCALL_ERROR_1;
}
-
pool_put (im->sad, old_sa);
return 0;
ipsec_main_t *im = &ipsec_main;
im->ipsec_if_pool_index_by_key = hash_create (0, sizeof (uword));
+ im->ipsec_if_real_dev_by_show_dev = hash_create (0, sizeof (uword));
return 0;
}