format_gre_tunnel (u8 * s, va_list * args)
{
gre_tunnel_t *t = va_arg (*args, gre_tunnel_t *);
- gre_main_t *gm = &gre_main;
- s = format (s, "[%d] src %U dst %U fib-idx %d sw-if-idx %d ",
- t - gm->tunnels,
+ s = format (s, "[%d] instance %d src %U dst %U fib-idx %d sw-if-idx %d ",
+ t->dev_instance, t->user_instance,
format_ip46_address, &t->tunnel_src, IP46_TYPE_ANY,
format_ip46_address, &t->tunnel_dst.fp_addr, IP46_TYPE_ANY,
t->outer_fib_index, t->sw_if_index);
- s = format (s, "payload %s", gre_tunnel_type_names[t->type]);
+ s = format (s, "payload %s ", gre_tunnel_type_names[t->type]);
+
+ if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
+ s = format (s, "session %d ", t->session_id);
+
+ if (t->type != GRE_TUNNEL_TYPE_L3)
+ s = format (s, "l2-adj-idx %d ", t->l2_adj_index);
return s;
}
static gre_tunnel_t *
-gre_tunnel_db_find (const ip46_address_t * src,
- const ip46_address_t * dst,
- u32 out_fib_index, u8 is_ipv6, gre_tunnel_key_t * key)
+gre_tunnel_db_find (const vnet_gre_add_del_tunnel_args_t * a,
+ u32 outer_fib_index, gre_tunnel_key_t * key)
{
gre_main_t *gm = &gre_main;
uword *p;
- if (!is_ipv6)
+ if (!a->is_ipv6)
{
- gre_mk_key4 (&src->ip4, &dst->ip4, out_fib_index, &key->gtk_v4);
+ gre_mk_key4 (a->src.ip4, a->dst.ip4, outer_fib_index,
+ a->tunnel_type, a->session_id, &key->gtk_v4);
p = hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4);
}
else
{
- gre_mk_key6 (&src->ip6, &dst->ip6, out_fib_index, &key->gtk_v6);
+ gre_mk_key6 (&a->src.ip6, &a->dst.ip6, outer_fib_index,
+ a->tunnel_type, a->session_id, &key->gtk_v6);
p = hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6);
}
if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6)
{
- hash_set_mem (gm->tunnel_by_key6, &t->key->gtk_v6, t - gm->tunnels);
+ hash_set_mem (gm->tunnel_by_key6, &t->key->gtk_v6, t->dev_instance);
}
else
{
- hash_set_mem (gm->tunnel_by_key4, &t->key->gtk_v4, t - gm->tunnels);
+ hash_set_mem (gm->tunnel_by_key4, &t->key->gtk_v4, t->dev_instance);
}
}
gt = pool_elt_at_index (gm->tunnels,
gm->tunnel_index_by_sw_if_index[sw_if_index]);
- /*
- * find the adjacency that is contributed by the FIB entry
- * that this tunnel resovles via, and use it as the next adj
- * in the midchain
- */
- if (vnet_hw_interface_get_flags (vnet_get_main (),
- gt->hw_if_index) &
- VNET_HW_INTERFACE_FLAG_LINK_UP)
+ if ((vnet_hw_interface_get_flags (vnet_get_main (), gt->hw_if_index) &
+ VNET_HW_INTERFACE_FLAG_LINK_UP) == 0)
{
- adj_nbr_midchain_stack (ai,
- fib_entry_contribute_ip_forwarding
- (gt->fib_entry_index));
+ adj_nbr_midchain_unstack (ai);
+ return;
}
- else
+
+ dpo_id_t tmp = DPO_INVALID;
+ fib_forward_chain_type_t fib_fwd = (FIB_PROTOCOL_IP6 == adj->ia_nh_proto) ?
+ FIB_FORW_CHAIN_TYPE_UNICAST_IP6 : FIB_FORW_CHAIN_TYPE_UNICAST_IP4;
+
+ fib_entry_contribute_forwarding (gt->fib_entry_index, fib_fwd, &tmp);
+ if (DPO_LOAD_BALANCE == tmp.dpoi_type)
{
- adj_nbr_midchain_unstack (ai);
+ /*
+ * post GRE rewrite we will load-balance. However, the GRE encap
+ * is always the same for this adjacency/tunnel and hence the IP/GRE
+ * src,dst hash is always the same result too. So we do that hash now and
+ * stack on the choice.
+ * If the choice is an incomplete adj then we will need a poke when
+ * it becomes complete. This happens since the adj update walk propagates
+ * as far a recursive paths.
+ */
+ const dpo_id_t *choice;
+ load_balance_t *lb;
+ int hash;
+
+ lb = load_balance_get (tmp.dpoi_index);
+
+ if (fib_fwd == FIB_FORW_CHAIN_TYPE_UNICAST_IP4)
+ hash = ip4_compute_flow_hash ((ip4_header_t *) adj_get_rewrite (ai),
+ lb->lb_hash_config);
+ else
+ hash = ip6_compute_flow_hash ((ip6_header_t *) adj_get_rewrite (ai),
+ lb->lb_hash_config);
+ choice =
+ load_balance_get_bucket_i (lb, hash & lb->lb_n_buckets_minus_1);
+ dpo_copy (&tmp, choice);
}
+
+ adj_nbr_midchain_stack (ai, &tmp);
+ dpo_reset (&tmp);
}
/**
};
static int
-vnet_gre_tunnel_add (vnet_gre_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
+vnet_gre_tunnel_add (vnet_gre_add_del_tunnel_args_t * a,
+ u32 outer_fib_index, u32 * sw_if_indexp)
{
gre_main_t *gm = &gre_main;
vnet_main_t *vnm = gm->vnet_main;
gre_tunnel_t *t;
vnet_hw_interface_t *hi;
u32 hw_if_index, sw_if_index;
- u32 outer_fib_index;
- u8 address[6];
clib_error_t *error;
u8 is_ipv6 = a->is_ipv6;
gre_tunnel_key_t key;
- if (!is_ipv6)
- outer_fib_index = ip4_fib_index_from_table_id (a->outer_fib_id);
- else
- outer_fib_index = ip6_fib_index_from_table_id (a->outer_fib_id);
-
- if (~0 == outer_fib_index)
- return VNET_API_ERROR_NO_SUCH_FIB;
-
- t =
- gre_tunnel_db_find (&a->src, &a->dst, outer_fib_index, a->is_ipv6, &key);
-
+ t = gre_tunnel_db_find (a, outer_fib_index, &key);
if (NULL != t)
- return VNET_API_ERROR_INVALID_VALUE;
+ return VNET_API_ERROR_IF_ALREADY_EXISTS;
pool_get_aligned (gm->tunnels, t, CLIB_CACHE_LINE_BYTES);
memset (t, 0, sizeof (*t));
- fib_node_init (&t->node, FIB_NODE_TYPE_GRE_TUNNEL);
- if (a->teb)
- t->type = GRE_TUNNEL_TYPE_TEB;
- else
- t->type = GRE_TUNNEL_TYPE_L3;
-
- if (vec_len (gm->free_gre_tunnel_hw_if_indices[t->type]) > 0)
+ /* Reconcile the real dev_instance and a possible requested instance */
+ u32 t_idx = t - gm->tunnels; /* tunnel index (or instance) */
+ u32 u_idx = a->instance; /* user specified instance */
+ if (u_idx == ~0)
+ u_idx = t_idx;
+ if (hash_get (gm->instance_used, u_idx))
{
- vnet_interface_main_t *im = &vnm->interface_main;
-
- hw_if_index = gm->free_gre_tunnel_hw_if_indices[t->type]
- [vec_len (gm->free_gre_tunnel_hw_if_indices[t->type]) - 1];
- _vec_len (gm->free_gre_tunnel_hw_if_indices[t->type]) -= 1;
-
- hi = vnet_get_hw_interface (vnm, hw_if_index);
- hi->dev_instance = t - gm->tunnels;
- hi->hw_instance = hi->dev_instance;
-
- /* clear old stats of freed tunnel before reuse */
- sw_if_index = hi->sw_if_index;
- vnet_interface_counter_lock (im);
- vlib_zero_combined_counter
- (&im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_TX],
- sw_if_index);
- vlib_zero_combined_counter (&im->combined_sw_if_counters
- [VNET_INTERFACE_COUNTER_RX], sw_if_index);
- vlib_zero_simple_counter (&im->sw_if_counters
- [VNET_INTERFACE_COUNTER_DROP], sw_if_index);
- vnet_interface_counter_unlock (im);
- if (GRE_TUNNEL_TYPE_TEB == t->type)
- {
- t->l2_tx_arc = vlib_node_add_named_next (vlib_get_main (),
- hi->tx_node_index,
- "adj-l2-midchain");
- }
+ pool_put (gm->tunnels, t);
+ return VNET_API_ERROR_INSTANCE_IN_USE;
}
+ hash_set (gm->instance_used, u_idx, 1);
+
+ t->dev_instance = t_idx; /* actual */
+ t->user_instance = u_idx; /* name */
+ fib_node_init (&t->node, FIB_NODE_TYPE_GRE_TUNNEL);
+
+ t->type = a->tunnel_type;
+ if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
+ t->session_id = a->session_id;
+
+ if (t->type == GRE_TUNNEL_TYPE_L3)
+ hw_if_index = vnet_register_interface (vnm, gre_device_class.index, t_idx,
+ gre_hw_interface_class.index,
+ t_idx);
else
{
- if (GRE_TUNNEL_TYPE_TEB == t->type)
- {
- /* Default MAC address (d00b:eed0:0000 + sw_if_index) */
- memset (address, 0, sizeof (address));
- address[0] = 0xd0;
- address[1] = 0x0b;
- address[2] = 0xee;
- address[3] = 0xd0;
- address[4] = t - gm->tunnels;
-
- error = ethernet_register_interface (vnm,
- gre_device_teb_class.index,
- t - gm->tunnels, address,
- &hw_if_index, 0);
-
- if (error)
- {
- clib_error_report (error);
- return VNET_API_ERROR_INVALID_REGISTRATION;
- }
- hi = vnet_get_hw_interface (vnm, hw_if_index);
-
- t->l2_tx_arc = vlib_node_add_named_next (vlib_get_main (),
- hi->tx_node_index,
- "adj-l2-midchain");
- }
- else
+ /* Default MAC address (d00b:eed0:0000 + sw_if_index) */
+ u8 address[6] = { 0xd0, 0x0b, 0xee, 0xd0, (u8) t_idx >> 8, (u8) t_idx };
+ error = ethernet_register_interface (vnm, gre_device_class.index, t_idx,
+ address, &hw_if_index, 0);
+ if (error)
{
- hw_if_index = vnet_register_interface (vnm,
- gre_device_class.index,
- t - gm->tunnels,
- gre_hw_interface_class.index,
- t - gm->tunnels);
+ clib_error_report (error);
+ return VNET_API_ERROR_INVALID_REGISTRATION;
}
- hi = vnet_get_hw_interface (vnm, hw_if_index);
- sw_if_index = hi->sw_if_index;
}
+ /* Set GRE tunnel interface output node (not used for L3 payload) */
+ vnet_set_interface_output_node (vnm, hw_if_index, gre_encap_node.index);
+
+ hi = vnet_get_hw_interface (vnm, hw_if_index);
+ sw_if_index = hi->sw_if_index;
+
t->hw_if_index = hw_if_index;
t->outer_fib_index = outer_fib_index;
t->sw_if_index = sw_if_index;
t->l2_adj_index = ADJ_INDEX_INVALID;
vec_validate_init_empty (gm->tunnel_index_by_sw_if_index, sw_if_index, ~0);
- gm->tunnel_index_by_sw_if_index[sw_if_index] = t - gm->tunnels;
+ gm->tunnel_index_by_sw_if_index[sw_if_index] = t_idx;
if (!is_ipv6)
{
t->tunnel_dst.fp_addr = a->dst;
gre_tunnel_db_add (t, &key);
+ if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
+ {
+ gre_sn_key_t skey;
+ gre_sn_t *gre_sn;
- t->fib_entry_index =
- fib_table_entry_special_add (outer_fib_index,
- &t->tunnel_dst,
- FIB_SOURCE_RR, FIB_ENTRY_FLAG_NONE);
- t->sibling_index =
- fib_entry_child_add (t->fib_entry_index,
- FIB_NODE_TYPE_GRE_TUNNEL, t - gm->tunnels);
+ gre_mk_sn_key (t, &skey);
+ gre_sn = (gre_sn_t *) hash_get_mem (gm->seq_num_by_key, &skey);
+ if (gre_sn != NULL)
+ {
+ gre_sn->ref_count++;
+ t->gre_sn = gre_sn;
+ }
+ else
+ {
+ gre_sn = clib_mem_alloc (sizeof (gre_sn_t));
+ gre_sn->seq_num = 0;
+ gre_sn->ref_count = 1;
+ t->gre_sn = gre_sn;
+ hash_set_mem_alloc (&gm->seq_num_by_key, &skey, (uword) gre_sn);
+ }
+ }
+
+ t->fib_entry_index = fib_table_entry_special_add
+ (outer_fib_index, &t->tunnel_dst, FIB_SOURCE_RR, FIB_ENTRY_FLAG_NONE);
+ t->sibling_index = fib_entry_child_add
+ (t->fib_entry_index, FIB_NODE_TYPE_GRE_TUNNEL, t_idx);
- if (GRE_TUNNEL_TYPE_TEB == t->type)
+ if (t->type != GRE_TUNNEL_TYPE_L3)
{
- t->l2_adj_index = adj_nbr_add_or_lock (t->tunnel_dst.fp_proto,
- VNET_LINK_ETHERNET,
- &zero_addr, sw_if_index);
+ t->l2_adj_index = adj_nbr_add_or_lock
+ (t->tunnel_dst.fp_proto, VNET_LINK_ETHERNET, &zero_addr, sw_if_index);
gre_update_adj (vnm, t->sw_if_index, t->l2_adj_index);
}
static int
vnet_gre_tunnel_delete (vnet_gre_add_del_tunnel_args_t * a,
- u32 * sw_if_indexp)
+ u32 outer_fib_index, u32 * sw_if_indexp)
{
gre_main_t *gm = &gre_main;
vnet_main_t *vnm = gm->vnet_main;
gre_tunnel_t *t;
gre_tunnel_key_t key;
u32 sw_if_index;
- u32 outer_fib_index;
-
- if (!a->is_ipv6)
- outer_fib_index = ip4_fib_index_from_table_id (a->outer_fib_id);
- else
- outer_fib_index = ip6_fib_index_from_table_id (a->outer_fib_id);
-
- if (~0 == outer_fib_index)
- return VNET_API_ERROR_NO_SUCH_FIB;
-
- t =
- gre_tunnel_db_find (&a->src, &a->dst, outer_fib_index, a->is_ipv6, &key);
+ t = gre_tunnel_db_find (a, outer_fib_index, &key);
if (NULL == t)
return VNET_API_ERROR_NO_SUCH_ENTRY;
sw_if_index = t->sw_if_index;
vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
+
/* make sure tunnel is removed from l2 bd or xconnect */
set_int_l2_mode (gm->vlib_main, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0);
- vec_add1 (gm->free_gre_tunnel_hw_if_indices[t->type], t->hw_if_index);
gm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
- if (GRE_TUNNEL_TYPE_TEB == t->type)
- adj_unlock (t->l2_adj_index);
+ if (t->type == GRE_TUNNEL_TYPE_L3)
+ vnet_delete_hw_interface (vnm, t->hw_if_index);
+ else
+ ethernet_delete_interface (vnm, t->hw_if_index);
if (t->l2_adj_index != ADJ_INDEX_INVALID)
adj_unlock (t->l2_adj_index);
fib_entry_child_remove (t->fib_entry_index, t->sibling_index);
fib_table_entry_delete_index (t->fib_entry_index, FIB_SOURCE_RR);
+ ASSERT ((t->type != GRE_TUNNEL_TYPE_ERSPAN) || (t->gre_sn != NULL));
+ if ((t->type == GRE_TUNNEL_TYPE_ERSPAN) && (t->gre_sn->ref_count-- == 1))
+ {
+ gre_sn_key_t skey;
+ gre_mk_sn_key (t, &skey);
+ hash_unset_mem_free (&gm->seq_num_by_key, &skey);
+ clib_mem_free (t->gre_sn);
+ }
+
+ hash_unset (gm->instance_used, t->user_instance);
gre_tunnel_db_remove (t);
fib_node_deinit (&t->node);
pool_put (gm->tunnels, t);
vnet_gre_add_del_tunnel (vnet_gre_add_del_tunnel_args_t * a,
u32 * sw_if_indexp)
{
+ u32 outer_fib_index;
+
+ if (!a->is_ipv6)
+ outer_fib_index = ip4_fib_index_from_table_id (a->outer_fib_id);
+ else
+ outer_fib_index = ip6_fib_index_from_table_id (a->outer_fib_id);
+
+ if (~0 == outer_fib_index)
+ return VNET_API_ERROR_NO_SUCH_FIB;
+
+ if (a->session_id > GTK_SESSION_ID_MAX)
+ return VNET_API_ERROR_INVALID_SESSION_ID;
+
if (a->is_add)
- return (vnet_gre_tunnel_add (a, sw_if_indexp));
+ return (vnet_gre_tunnel_add (a, outer_fib_index, sw_if_indexp));
else
- return (vnet_gre_tunnel_delete (a, sw_if_indexp));
+ return (vnet_gre_tunnel_delete (a, outer_fib_index, sw_if_indexp));
}
clib_error_t *
unformat_input_t _line_input, *line_input = &_line_input;
vnet_gre_add_del_tunnel_args_t _a, *a = &_a;
ip46_address_t src, dst;
+ u32 instance = ~0;
u32 outer_fib_id = 0;
- u8 teb = 0;
+ gre_tunnel_type_t t_type = GRE_TUNNEL_TYPE_L3;
+ u32 session_id = 0;
int rv;
u32 num_m_args = 0;
u8 is_add = 1;
{
if (unformat (line_input, "del"))
is_add = 0;
+ else if (unformat (line_input, "instance %d", &instance))
+ ;
else
if (unformat (line_input, "src %U", unformat_ip4_address, &src.ip4))
{
else if (unformat (line_input, "outer-fib-id %d", &outer_fib_id))
;
else if (unformat (line_input, "teb"))
- teb = 1;
+ t_type = GRE_TUNNEL_TYPE_TEB;
+ else if (unformat (line_input, "erspan %d", &session_id))
+ t_type = GRE_TUNNEL_TYPE_ERSPAN;
else
{
error = clib_error_return (0, "unknown input `%U'",
}
memset (a, 0, sizeof (*a));
+ a->is_add = is_add;
a->outer_fib_id = outer_fib_id;
- a->teb = teb;
+ a->tunnel_type = t_type;
+ a->session_id = session_id;
a->is_ipv6 = ipv6_set;
+ a->instance = instance;
if (!ipv6_set)
{
clib_memcpy (&a->src.ip4, &src.ip4, sizeof (src.ip4));
clib_memcpy (&a->dst.ip6, &dst.ip6, sizeof (dst.ip6));
}
- if (is_add)
- rv = vnet_gre_tunnel_add (a, &sw_if_index);
- else
- rv = vnet_gre_tunnel_delete (a, &sw_if_index);
+ rv = vnet_gre_add_del_tunnel (a, &sw_if_index);
switch (rv)
{
vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
vnet_get_main (), sw_if_index);
break;
- case VNET_API_ERROR_INVALID_VALUE:
+ case VNET_API_ERROR_IF_ALREADY_EXISTS:
error = clib_error_return (0, "GRE tunnel already exists...");
goto done;
case VNET_API_ERROR_NO_SUCH_FIB:
error = clib_error_return (0, "outer fib ID %d doesn't exist\n",
outer_fib_id);
goto done;
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ error = clib_error_return (0, "GRE tunnel doesn't exist");
+ goto done;
+ case VNET_API_ERROR_INVALID_SESSION_ID:
+ error = clib_error_return (0, "session ID %d out of range\n",
+ session_id);
+ goto done;
+ case VNET_API_ERROR_INSTANCE_IN_USE:
+ error = clib_error_return (0, "Instance is in use");
+ goto done;
default:
error =
clib_error_return (0, "vnet_gre_add_del_tunnel returned %d", rv);
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (create_gre_tunnel_command, static) = {
.path = "create gre tunnel",
- .short_help = "create gre tunnel src <addr> dst <addr> "
- "[outer-fib-id <fib>] [teb] [del]",
+ .short_help = "create gre tunnel src <addr> dst <addr> [instance <n>] "
+ "[outer-fib-id <fib>] [teb | erspan <session-id>] [del]",
.function = create_gre_tunnel_command_fn,
};
/* *INDENT-ON* */
Code Review / vpp.git / blobdiff