#include <vnet/adj/adj_midchain.h>
#include <vnet/adj/adj_nbr.h>
#include <vnet/mpls/mpls.h>
+#include <vnet/l2/l2_input.h>
+#include <vnet/nhrp/nhrp.h>
-static const char *gre_tunnel_type_names[] = GRE_TUNNEL_TYPE_NAMES;
-
-static inline u64
-gre4_mk_key (const ip4_address_t *src,
- const ip4_address_t *dst,
- u32 out_fib_index)
-{
- // FIXME. the fib index should be part of the key
- return ((u64)src->as_u32 << 32 | (u64)dst->as_u32);
-}
-
-static u8 *
+u8 *
format_gre_tunnel_type (u8 * s, va_list * args)
{
- gre_tunnel_type_t type = va_arg (*args, gre_tunnel_type_t);
+ gre_tunnel_type_t type = va_arg (*args, int);
+
+ switch (type)
+ {
+#define _(n, v) case GRE_TUNNEL_TYPE_##n: \
+ s = format (s, "%s", v); \
+ break;
+ foreach_gre_tunnel_type
+#undef _
+ }
- return (format(s, "%s", gre_tunnel_type_names[type]));
+ return (s);
}
static u8 *
format_gre_tunnel (u8 * s, va_list * args)
{
- gre_tunnel_t * t = va_arg (*args, gre_tunnel_t *);
- gre_main_t * gm = &gre_main;
- u8 is_ipv6 = t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0;
+ gre_tunnel_t *t = va_arg (*args, gre_tunnel_t *);
- if (!is_ipv6)
- s = format (s,
- "[%d] %U (src) %U (dst) payload %U outer_fib_index %d",
- t - gm->tunnels,
- format_ip4_address, &t->tunnel_src.ip4,
- format_ip4_address, &t->tunnel_dst.fp_addr.ip4,
- format_gre_tunnel_type, t->type,
- t->outer_fib_index);
- else
- s = format (s,
- "[%d] %U (src) %U (dst) payload %U outer_fib_index %d",
- t - gm->tunnels,
- format_ip6_address, &t->tunnel_src.ip6,
- format_ip6_address, &t->tunnel_dst.fp_addr.ip6,
- format_gre_tunnel_type, t->type,
- t->outer_fib_index);
+ 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 %U ", format_gre_tunnel_type, t->type);
+ s = format (s, "%U ", format_tunnel_mode, t->mode);
+
+ 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_db_find (const vnet_gre_tunnel_add_del_args_t * a,
+ u32 outer_fib_index, gre_tunnel_key_t * key)
{
- gre_main_t * gm = &gre_main;
- uword * p;
- u64 key4, key6[4];
+ gre_main_t *gm = &gre_main;
+ uword *p;
- if (!is_ipv6)
+ if (!a->is_ipv6)
{
- key4 = gre4_mk_key(&src->ip4, &dst->ip4, out_fib_index);
- p = hash_get (gm->tunnel_by_key4, key4);
+ gre_mk_key4 (a->src.ip4, a->dst.ip4, outer_fib_index,
+ a->type, a->mode, a->session_id, &key->gtk_v4);
+ p = hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4);
}
else
{
- key6[0] = src->ip6.as_u64[0];
- key6[1] = src->ip6.as_u64[1];
- key6[2] = dst->ip6.as_u64[0];
- key6[3] = dst->ip6.as_u64[1];
- p = hash_get_mem (gm->tunnel_by_key6, key6);
+ gre_mk_key6 (&a->src.ip6, &a->dst.ip6, outer_fib_index,
+ a->type, a->mode, a->session_id, &key->gtk_v6);
+ p = hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6);
}
if (NULL == p)
}
static void
-gre_tunnel_db_add (const gre_tunnel_t *t)
+gre_tunnel_db_add (gre_tunnel_t * t, gre_tunnel_key_t * key)
{
- gre_main_t * gm = &gre_main;
- u64 key4, key6[4], *key6_copy;
- u8 is_ipv6 = t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0;
+ gre_main_t *gm = &gre_main;
- if (!is_ipv6)
+ if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6)
{
- key4 = gre4_mk_key(&t->tunnel_src.ip4, &t->tunnel_dst.fp_addr.ip4,
- t->outer_fib_index);
- hash_set (gm->tunnel_by_key4, key4, t - gm->tunnels);
+ hash_set_mem_alloc (&gm->tunnel_by_key6, &key->gtk_v6, t->dev_instance);
}
else
{
- key6[0] = t->tunnel_src.ip6.as_u64[0];
- key6[1] = t->tunnel_src.ip6.as_u64[1];
- key6[2] = t->tunnel_dst.fp_addr.ip6.as_u64[0];
- key6[3] = t->tunnel_dst.fp_addr.ip6.as_u64[1];
- key6_copy = clib_mem_alloc (sizeof (key6));
- clib_memcpy (key6_copy, key6, sizeof (key6));
- hash_set_mem (gm->tunnel_by_key6, key6_copy, t - gm->tunnels);
+ hash_set_mem_alloc (&gm->tunnel_by_key4, &key->gtk_v4, t->dev_instance);
}
}
static void
-gre_tunnel_db_remove (const gre_tunnel_t *t)
+gre_tunnel_db_remove (gre_tunnel_t * t, gre_tunnel_key_t * key)
{
- gre_main_t * gm = &gre_main;
- u64 key4, key6[4];
- u8 is_ipv6 = t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6 ? 1 : 0;
+ gre_main_t *gm = &gre_main;
- if (!is_ipv6)
+ if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6)
{
- key4 = gre4_mk_key(&t->tunnel_src.ip4, &t->tunnel_dst.fp_addr.ip4,
- t->outer_fib_index);
- hash_unset (gm->tunnel_by_key4, key4);
+ hash_unset_mem_free (&gm->tunnel_by_key6, &key->gtk_v6);
}
else
{
- key6[0] = t->tunnel_src.ip6.as_u64[0];
- key6[1] = t->tunnel_src.ip6.as_u64[1];
- key6[2] = t->tunnel_dst.fp_addr.ip6.as_u64[0];
- key6[3] = t->tunnel_dst.fp_addr.ip6.as_u64[1];
- hash_unset_mem (gm->tunnel_by_key6, key6);
+ hash_unset_mem_free (&gm->tunnel_by_key4, &key->gtk_v4);
}
-
-}
-
-static gre_tunnel_t *
-gre_tunnel_from_fib_node (fib_node_t *node)
-{
-#if (CLIB_DEBUG > 0)
- ASSERT(FIB_NODE_TYPE_GRE_TUNNEL == node->fn_type);
-#endif
- return ((gre_tunnel_t*) (((char*)node) -
- STRUCT_OFFSET_OF(gre_tunnel_t, node)));
}
/**
void
gre_tunnel_stack (adj_index_t ai)
{
- gre_main_t * gm = &gre_main;
- ip_adjacency_t *adj;
- gre_tunnel_t *gt;
- u32 sw_if_index;
-
- adj = adj_get(ai);
- sw_if_index = adj->rewrite_header.sw_if_index;
-
- if ((vec_len(gm->tunnel_index_by_sw_if_index) < sw_if_index) ||
- (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index]))
- return;
-
- 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)
+ gre_main_t *gm = &gre_main;
+ ip_adjacency_t *adj;
+ gre_tunnel_t *gt;
+ u32 sw_if_index;
+
+ adj = adj_get (ai);
+ sw_if_index = adj->rewrite_header.sw_if_index;
+
+ if ((vec_len (gm->tunnel_index_by_sw_if_index) <= sw_if_index) ||
+ (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index]))
+ return;
+
+ gt = pool_elt_at_index (gm->tunnels,
+ gm->tunnel_index_by_sw_if_index[sw_if_index]);
+
+ 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_midchain_delegate_unstack (ai);
}
- else
+ else
{
- adj_nbr_midchain_unstack(ai);
+ adj_midchain_delegate_stack (ai, gt->outer_fib_index, >->tunnel_dst);
}
}
* @brief Call back when restacking all adjacencies on a GRE interface
*/
static adj_walk_rc_t
-gre_adj_walk_cb (adj_index_t ai,
- void *ctx)
+gre_adj_walk_cb (adj_index_t ai, void *ctx)
{
- gre_tunnel_stack(ai);
+ gre_tunnel_stack (ai);
- return (ADJ_WALK_RC_CONTINUE);
+ return (ADJ_WALK_RC_CONTINUE);
}
static void
-gre_tunnel_restack (gre_tunnel_t *gt)
+gre_tunnel_restack (gre_tunnel_t * gt)
{
- fib_protocol_t proto;
+ fib_protocol_t proto;
- /*
- * walk all the adjacencies on th GRE interface and restack them
- */
- FOR_EACH_FIB_IP_PROTOCOL(proto)
- {
- adj_nbr_walk(gt->sw_if_index,
- proto,
- gre_adj_walk_cb,
- NULL);
- }
+ /*
+ * walk all the adjacencies on th GRE interface and restack them
+ */
+ FOR_EACH_FIB_IP_PROTOCOL (proto)
+ {
+ adj_nbr_walk (gt->sw_if_index, proto, gre_adj_walk_cb, NULL);
+ }
}
-/**
- * Function definition to backwalk a FIB node
- */
-static fib_node_back_walk_rc_t
-gre_tunnel_back_walk (fib_node_t *node,
- fib_node_back_walk_ctx_t *ctx)
+static void
+gre_nhrp_mk_key (const gre_tunnel_t * t,
+ const nhrp_entry_t * ne, gre_tunnel_key_t * key)
{
- gre_tunnel_restack(gre_tunnel_from_fib_node(node));
+ const fib_prefix_t *nh;
+
+ nh = nhrp_entry_get_nh (ne);
- return (FIB_NODE_BACK_WALK_CONTINUE);
+ /* construct the key using mode P2P so it can be found in the DP */
+ if (FIB_PROTOCOL_IP4 == nh->fp_proto)
+ gre_mk_key4 (t->tunnel_src.ip4,
+ nh->fp_addr.ip4,
+ nhrp_entry_get_fib_index (ne),
+ t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v4);
+ else
+ gre_mk_key6 (&t->tunnel_src.ip6,
+ &nh->fp_addr.ip6,
+ nhrp_entry_get_fib_index (ne),
+ t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v6);
}
/**
- * Function definition to get a FIB node from its index
+ * An NHRP entry has been added
*/
-static fib_node_t*
-gre_tunnel_fib_node_get (fib_node_index_t index)
+static void
+gre_nhrp_entry_added (const nhrp_entry_t * ne)
+{
+ gre_main_t *gm = &gre_main;
+ const ip46_address_t *nh;
+ gre_tunnel_key_t key;
+ gre_tunnel_t *t;
+ u32 sw_if_index;
+ u32 t_idx;
+
+ sw_if_index = nhrp_entry_get_sw_if_index (ne);
+ if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
+ return;
+
+ t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
+
+ if (INDEX_INVALID == t_idx)
+ return;
+
+ /* entry has been added on an interface for which there is a GRE tunnel */
+ t = pool_elt_at_index (gm->tunnels, t_idx);
+
+ if (t->mode != TUNNEL_MODE_MP)
+ return;
+
+ /* the next-hop (underlay) of the NHRP entry will form part of the key for
+ * ingress lookup to match packets to this interface */
+ gre_nhrp_mk_key (t, ne, &key);
+ gre_tunnel_db_add (t, &key);
+
+ /* update the rewrites for each of the adjacencies for this peer (overlay)
+ * using the next-hop (underlay) */
+ mgre_walk_ctx_t ctx = {
+ .t = t,
+ .ne = ne
+ };
+ nh = nhrp_entry_get_peer (ne);
+ adj_nbr_walk_nh (nhrp_entry_get_sw_if_index (ne),
+ (ip46_address_is_ip4 (nh) ?
+ FIB_PROTOCOL_IP4 :
+ FIB_PROTOCOL_IP6), nh, mgre_mk_complete_walk, &ctx);
+}
+
+static void
+gre_nhrp_entry_deleted (const nhrp_entry_t * ne)
{
- gre_tunnel_t * gt;
- gre_main_t * gm;
+ gre_main_t *gm = &gre_main;
+ const ip46_address_t *nh;
+ gre_tunnel_key_t key;
+ gre_tunnel_t *t;
+ u32 sw_if_index;
+ u32 t_idx;
+
+ sw_if_index = nhrp_entry_get_sw_if_index (ne);
+ if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
+ return;
+
+ t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
- gm = &gre_main;
- gt = pool_elt_at_index(gm->tunnels, index);
+ if (INDEX_INVALID == t_idx)
+ return;
- return (>->node);
+ t = pool_elt_at_index (gm->tunnels, t_idx);
+
+ /* remove the next-hop as an ingress lookup key */
+ gre_nhrp_mk_key (t, ne, &key);
+ gre_tunnel_db_remove (t, &key);
+
+ nh = nhrp_entry_get_peer (ne);
+
+ /* make all the adjacencies incomplete */
+ adj_nbr_walk_nh (nhrp_entry_get_sw_if_index (ne),
+ (ip46_address_is_ip4 (nh) ?
+ FIB_PROTOCOL_IP4 :
+ FIB_PROTOCOL_IP6), nh, mgre_mk_incomplete_walk, t);
}
-/**
- * Function definition to inform the FIB node that its last lock has gone.
- */
-static void
-gre_tunnel_last_lock_gone (fib_node_t *node)
+static walk_rc_t
+gre_tunnel_delete_nhrp_walk (index_t nei, void *ctx)
{
- /*
- * The MPLS GRE tunnel is a root of the graph. As such
- * it never has children and thus is never locked.
- */
- ASSERT(0);
+ gre_tunnel_t *t = ctx;
+ gre_tunnel_key_t key;
+
+ gre_nhrp_mk_key (t, nhrp_entry_get (nei), &key);
+ gre_tunnel_db_remove (t, &key);
+
+ return (WALK_CONTINUE);
}
-/*
- * Virtual function table registered by MPLS GRE tunnels
- * for participation in the FIB object graph.
- */
-const static fib_node_vft_t gre_vft = {
- .fnv_get = gre_tunnel_fib_node_get,
- .fnv_last_lock = gre_tunnel_last_lock_gone,
- .fnv_back_walk = gre_tunnel_back_walk,
-};
+static walk_rc_t
+gre_tunnel_add_nhrp_walk (index_t nei, void *ctx)
+{
+ gre_tunnel_t *t = ctx;
+ gre_tunnel_key_t key;
+
+ gre_nhrp_mk_key (t, nhrp_entry_get (nei), &key);
+ gre_tunnel_db_add (t, &key);
+
+ return (WALK_CONTINUE);
+}
static int
-vnet_gre_tunnel_add (vnet_gre_add_del_tunnel_args_t *a,
- u32 * sw_if_indexp)
+vnet_gre_tunnel_add (vnet_gre_tunnel_add_del_args_t * a,
+ u32 outer_fib_index, u32 * sw_if_indexp)
{
- gre_main_t * gm = &gre_main;
- vnet_main_t * vnm = gm->vnet_main;
- ip4_main_t * im4 = &ip4_main;
- ip6_main_t * im6 = &ip6_main;
- gre_tunnel_t * t;
- vnet_hw_interface_t * hi;
+ gre_main_t *gm = &gre_main;
+ vnet_main_t *vnm = gm->vnet_main;
+ ip4_main_t *im4 = &ip4_main;
+ ip6_main_t *im6 = &ip6_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, a->outer_fib_id, a->is_ipv6);
-
+ 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);
+ clib_memset (t, 0, sizeof (*t));
+
+ /* 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))
+ {
+ 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 */
- if (a->teb)
- t->type = GRE_TUNNEL_TYPE_TEB;
+ t->type = a->type;
+ t->mode = a->mode;
+ t->flags = a->flags;
+ if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
+ t->session_id = a->session_id;
+
+ if (t->type == GRE_TUNNEL_TYPE_L3)
+ {
+ if (t->mode == TUNNEL_MODE_P2P)
+ hw_if_index =
+ vnet_register_interface (vnm, gre_device_class.index, t_idx,
+ gre_hw_interface_class.index, t_idx);
+ else
+ hw_if_index =
+ vnet_register_interface (vnm, gre_device_class.index, t_idx,
+ mgre_hw_interface_class.index, t_idx);
+ }
else
- t->type = GRE_TUNNEL_TYPE_L3;
-
- if (vec_len (gm->free_gre_tunnel_hw_if_indices[t->type]) > 0) {
- 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");
- }
- } 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 {
- hw_if_index = vnet_register_interface(vnm,
- gre_device_class.index,
- t - gm->tunnels,
- gre_hw_interface_class.index,
- t - gm->tunnels);
- }
- hi = vnet_get_hw_interface (vnm, hw_if_index);
- sw_if_index = hi->sw_if_index;
+ {
+ /* 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)
+ {
+ clib_error_report (error);
+ return VNET_API_ERROR_INVALID_REGISTRATION;
+ }
}
+ /* 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)
{
vec_validate (im4->fib_index_by_sw_if_index, sw_if_index);
- hi->min_packet_bytes = 64 + sizeof (gre_header_t) + sizeof (ip4_header_t);
+ hi->min_packet_bytes =
+ 64 + sizeof (gre_header_t) + sizeof (ip4_header_t);
}
else
{
vec_validate (im6->fib_index_by_sw_if_index, sw_if_index);
- hi->min_packet_bytes = 64 + sizeof (gre_header_t) + sizeof (ip6_header_t);
+ hi->min_packet_bytes =
+ 64 + sizeof (gre_header_t) + sizeof (ip6_header_t);
}
- hi->per_packet_overhead_bytes =
- /* preamble */ 8 + /* inter frame gap */ 12;
-
/* Standard default gre MTU. */
- hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 9000;
+ vnet_sw_interface_set_mtu (vnm, sw_if_index, 9000);
/*
* source the FIB entry for the tunnel's destination
t->tunnel_dst.fp_proto = !is_ipv6 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
t->tunnel_dst.fp_addr = a->dst;
- gre_tunnel_db_add(t);
+ gre_tunnel_db_add (t, &key);
- 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);
+ if (t->mode == TUNNEL_MODE_MP)
+ nhrp_walk_itf (t->sw_if_index, gre_tunnel_add_nhrp_walk, t);
- if (GRE_TUNNEL_TYPE_TEB == t->type)
- {
- 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);
- }
+ if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
+ {
+ gre_sn_key_t skey;
+ gre_sn_t *gre_sn;
+
+ 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);
+ }
+ }
+
+ 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);
+ gre_update_adj (vnm, t->sw_if_index, t->l2_adj_index);
+ }
if (sw_if_indexp)
*sw_if_indexp = sw_if_index;
+ /* register gre46-input nodes */
+ ip4_register_protocol (IP_PROTOCOL_GRE, gre4_input_node.index);
+ ip6_register_protocol (IP_PROTOCOL_GRE, gre6_input_node.index);
+
return 0;
}
static int
-vnet_gre_tunnel_delete (vnet_gre_add_del_tunnel_args_t *a,
- u32 * sw_if_indexp)
+vnet_gre_tunnel_delete (vnet_gre_tunnel_add_del_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;
+ 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;
- t = gre_tunnel_db_find(&a->src, &a->dst, a->outer_fib_id, a->is_ipv6);
-
+ t = gre_tunnel_db_find (a, outer_fib_index, &key);
if (NULL == t)
return VNET_API_ERROR_NO_SUCH_ENTRY;
+ if (t->mode == TUNNEL_MODE_MP)
+ nhrp_walk_itf (t->sw_if_index, gre_tunnel_delete_nhrp_walk, t);
+
sw_if_index = t->sw_if_index;
- vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */);
+ 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);
+ set_int_l2_mode (gm->vlib_main, vnm, MODE_L3, sw_if_index, 0,
+ L2_BD_PORT_TYPE_NORMAL, 0, 0);
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);
+ {
+ adj_midchain_delegate_unstack (t->l2_adj_index);
+ 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);
+ }
- gre_tunnel_db_remove(t);
- fib_node_deinit(&t->node);
+ hash_unset (gm->instance_used, t->user_instance);
+ gre_tunnel_db_remove (t, &key);
pool_put (gm->tunnels, t);
if (sw_if_indexp)
}
int
-vnet_gre_add_del_tunnel (vnet_gre_add_del_tunnel_args_t *a,
- u32 * sw_if_indexp)
+vnet_gre_tunnel_add_del (vnet_gre_tunnel_add_del_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_table_id);
+ else
+ outer_fib_index = ip6_fib_index_from_table_id (a->outer_table_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->mode == TUNNEL_MODE_MP && !ip46_address_is_zero (&a->dst))
+ return (VNET_API_ERROR_INVALID_DST_ADDRESS);
+
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 *
gre_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
{
- gre_main_t * gm = &gre_main;
- vnet_hw_interface_t * hi;
+ gre_main_t *gm = &gre_main;
+ vnet_hw_interface_t *hi;
gre_tunnel_t *t;
u32 ti;
hi = vnet_get_hw_interface (vnm, hw_if_index);
if (NULL == gm->tunnel_index_by_sw_if_index ||
- hi->sw_if_index >= vec_len(gm->tunnel_index_by_sw_if_index))
- return (NULL);
+ hi->sw_if_index >= vec_len (gm->tunnel_index_by_sw_if_index))
+ return (NULL);
ti = gm->tunnel_index_by_sw_if_index[hi->sw_if_index];
if (~0 == ti)
- /* not one of ours */
- return (NULL);
+ /* not one of ours */
+ return (NULL);
- t = pool_elt_at_index(gm->tunnels, ti);
+ t = pool_elt_at_index (gm->tunnels, ti);
if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
- vnet_hw_interface_set_flags (vnm, hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP);
+ 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 */);
+ vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */ );
- gre_tunnel_restack(t);
+ gre_tunnel_restack (t);
return /* no error */ 0;
}
static clib_error_t *
create_gre_tunnel_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
{
- 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 outer_fib_id = 0;
- u8 teb = 0;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_gre_tunnel_add_del_args_t _a, *a = &_a;
+ ip46_address_t src = ip46_address_initializer, dst =
+ ip46_address_initializer;
+ u32 instance = ~0;
+ u32 outer_table_id = 0;
+ gre_tunnel_type_t t_type = GRE_TUNNEL_TYPE_L3;
+ tunnel_mode_t t_mode = TUNNEL_MODE_P2P;
+ u32 session_id = 0;
int rv;
- u32 num_m_args = 0;
u8 is_add = 1;
u32 sw_if_index;
clib_error_t *error = NULL;
- u8 ipv4_set = 0;
- u8 ipv6_set = 0;
/* Get a line of input. */
- if (! unformat_user (input, unformat_line_input, line_input))
+ if (!unformat_user (input, unformat_line_input, line_input))
return 0;
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) {
- if (unformat (line_input, "del"))
- is_add = 0;
- else if (unformat (line_input, "src %U", unformat_ip4_address, &src.ip4)) {
- num_m_args++;
- ipv4_set = 1;
- } else if (unformat (line_input, "dst %U", unformat_ip4_address, &dst.ip4)) {
- num_m_args++;
- ipv4_set = 1;
- } else if (unformat (line_input, "src %U", unformat_ip6_address, &src.ip6)) {
- num_m_args++;
- ipv6_set = 1;
- } else if (unformat (line_input, "dst %U", unformat_ip6_address, &dst.ip6)) {
- num_m_args++;
- ipv6_set = 1;
- } else if (unformat (line_input, "outer-fib-id %d", &outer_fib_id))
- ;
- else if (unformat (line_input, "teb"))
- teb = 1;
- else
- {
- error = clib_error_return (0, "unknown input `%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- if (num_m_args < 2)
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
- error = clib_error_return (0, "mandatory argument(s) missing");
- goto done;
+ if (unformat (line_input, "del"))
+ is_add = 0;
+ else if (unformat (line_input, "instance %d", &instance))
+ ;
+ else if (unformat (line_input, "src %U", unformat_ip46_address, &src))
+ ;
+ else if (unformat (line_input, "dst %U", unformat_ip46_address, &dst))
+ ;
+ else if (unformat (line_input, "outer-table-id %d", &outer_table_id))
+ ;
+ else if (unformat (line_input, "multipoint"))
+ t_mode = TUNNEL_MODE_MP;
+ else if (unformat (line_input, "teb"))
+ 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'",
+ format_unformat_error, line_input);
+ goto done;
+ }
}
- if ((ipv4_set && memcmp (&src.ip4, &dst.ip4, sizeof(src.ip4)) == 0) ||
- (ipv6_set && memcmp (&src.ip6, &dst.ip6, sizeof(src.ip6)) == 0))
+ if (ip46_address_is_equal (&src, &dst))
{
error = clib_error_return (0, "src and dst are identical");
goto done;
}
- if (ipv4_set && ipv6_set)
- return clib_error_return (0, "both IPv4 and IPv6 addresses specified");
-
- if ((ipv4_set && memcmp (&dst.ip4, &zero_addr.ip4, sizeof(dst.ip4)) == 0) ||
- (ipv6_set && memcmp (&dst.ip6, &zero_addr.ip6, sizeof(dst.ip6)) == 0))
+ if (t_mode != TUNNEL_MODE_MP && ip46_address_is_zero (&dst))
{
- error = clib_error_return (0, "dst address cannot be zero");
+ error = clib_error_return (0, "destination address not specified");
goto done;
}
- memset (a, 0, sizeof (*a));
- a->outer_fib_id = outer_fib_id;
- a->teb = teb;
- a->is_ipv6 = ipv6_set;
- if (!ipv6_set)
+ if (ip46_address_is_zero (&src))
{
- clib_memcpy(&a->src.ip4, &src.ip4, sizeof(src.ip4));
- clib_memcpy(&a->dst.ip4, &dst.ip4, sizeof(dst.ip4));
+ error = clib_error_return (0, "source address not specified");
+ goto done;
}
- else
+
+ if (ip46_address_is_ip4 (&src) != ip46_address_is_ip4 (&dst))
{
- clib_memcpy(&a->src.ip6, &src.ip6, sizeof(src.ip6));
- clib_memcpy(&a->dst.ip6, &dst.ip6, sizeof(dst.ip6));
+ error =
+ clib_error_return (0, "src and dst address must be the same AF");
+ goto done;
}
- if (is_add)
- rv = vnet_gre_tunnel_add(a, &sw_if_index);
- else
- rv = vnet_gre_tunnel_delete(a, &sw_if_index);
+ clib_memset (a, 0, sizeof (*a));
+ a->is_add = is_add;
+ a->outer_table_id = outer_table_id;
+ a->type = t_type;
+ a->mode = t_mode;
+ a->session_id = session_id;
+ a->is_ipv6 = !ip46_address_is_ip4 (&src);
+ a->instance = instance;
+ clib_memcpy (&a->src, &src, sizeof (a->src));
+ clib_memcpy (&a->dst, &dst, sizeof (a->dst));
+
+ rv = vnet_gre_tunnel_add_del (a, &sw_if_index);
- switch(rv)
+ switch (rv)
{
case 0:
- vlib_cli_output(vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main(), sw_if_index);
+ 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);
+ error = clib_error_return (0, "outer table ID %d doesn't exist\n",
+ outer_table_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);
+ error =
+ clib_error_return (0, "vnet_gre_tunnel_add_del returned %d", rv);
goto done;
}
return error;
}
+/* *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* */
static clib_error_t *
show_gre_tunnel_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
{
- gre_main_t * gm = &gre_main;
- gre_tunnel_t * t;
+ gre_main_t *gm = &gre_main;
+ gre_tunnel_t *t;
u32 ti = ~0;
if (pool_elts (gm->tunnels) == 0)
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (input, "%d", &ti))
- ;
+ ;
else
- break;
+ break;
}
if (~0 == ti)
{
+ /* *INDENT-OFF* */
pool_foreach (t, gm->tunnels,
({
vlib_cli_output (vm, "%U", format_gre_tunnel, t);
}));
+ /* *INDENT-ON* */
}
else
- {
- t = pool_elt_at_index(gm->tunnels, ti);
+ {
+ t = pool_elt_at_index (gm->tunnels, ti);
vlib_cli_output (vm, "%U", format_gre_tunnel, t);
- }
+ }
return 0;
}
+/* *INDENT-OFF* */
VLIB_CLI_COMMAND (show_gre_tunnel_command, static) = {
.path = "show gre tunnel",
.function = show_gre_tunnel_command_fn,
};
+/* *INDENT-ON* */
+
+const static nhrp_vft_t gre_nhrp_vft = {
+ .nv_added = gre_nhrp_entry_added,
+ .nv_deleted = gre_nhrp_entry_deleted,
+};
/* force inclusion from application's main.c */
-clib_error_t *gre_interface_init (vlib_main_t *vm)
+clib_error_t *
+gre_interface_init (vlib_main_t * vm)
{
- fib_node_register_type(FIB_NODE_TYPE_GRE_TUNNEL, &gre_vft);
+ nhrp_register (&gre_nhrp_vft);
- return 0;
+ return (NULL);
}
-VLIB_INIT_FUNCTION(gre_interface_init);
+
+VLIB_INIT_FUNCTION (gre_interface_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff