#include <vnet/vnet.h>
#include <vnet/pg/pg.h>
#include <vnet/mpls/mpls_tunnel.h>
+#include <vnet/mpls/mpls_types.h>
#include <vnet/ip/ip.h>
#include <vnet/fib/fib_path_list.h>
#include <vnet/adj/adj_midchain.h>
+#include <vnet/adj/adj_mcast.h>
+#include <vnet/dpo/replicate_dpo.h>
/**
* @brief pool of tunnel instances
*/
static u32 *mpls_tunnel_db;
+/**
+ * @brief MPLS tunnel flags strings
+ */
+static const char *mpls_tunnel_attribute_names[] = MPLS_TUNNEL_ATTRIBUTES;
+
/**
* @brief Get a tunnel object from a SW interface index
*/
mpls_tunnel_get_from_sw_if_index (u32 sw_if_index)
{
if ((vec_len(mpls_tunnel_db) < sw_if_index) ||
- (~0 == mpls_tunnel_db[sw_if_index]))
- return (NULL);
+ (~0 == mpls_tunnel_db[sw_if_index]))
+ return (NULL);
return (pool_elt_at_index(mpls_tunnel_pool,
- mpls_tunnel_db[sw_if_index]));
+ mpls_tunnel_db[sw_if_index]));
}
/**
- * @brief Return true if the label stack is imp-null only
+ * @brief Build a rewrite string for the MPLS tunnel.
*/
-static fib_forward_chain_type_t
-mpls_tunnel_get_fwd_chain_type (const mpls_tunnel_t *mt)
+static u8*
+mpls_tunnel_build_rewrite_i (void)
{
- if ((1 == vec_len(mt->mt_label_stack)) &&
- (mt->mt_label_stack[0] == MPLS_IETF_IMPLICIT_NULL_LABEL))
- {
- /*
- * the only label in the label stack is implicit null
- * we need to build an IP chain.
- */
- if (FIB_PROTOCOL_IP4 == fib_path_list_get_proto(mt->mt_path_list))
- {
- return (FIB_FORW_CHAIN_TYPE_UNICAST_IP4);
- }
- else
- {
- return (FIB_FORW_CHAIN_TYPE_UNICAST_IP6);
- }
- }
- else
- {
- return (FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS);
- }
+ /*
+ * passing the adj code a NULL rewirte means 'i don't have one cos
+ * t'other end is unresolved'. That's not the case here. For the mpls
+ * tunnel there are just no bytes of encap to apply in the adj. We'll impose
+ * the label stack once we choose a path. So return a zero length rewrite.
+ */
+ u8 *rewrite = NULL;
+
+ vec_validate(rewrite, 0);
+ vec_reset_length(rewrite);
+
+ return (rewrite);
}
/**
* @brief Build a rewrite string for the MPLS tunnel.
- *
- * We have choices here;
- * 1 - have an Adjacency with a zero length string and stack it on
- * MPLS label objects
- * 2 - put the label header rewrites in the adjacency string.
- *
- * We choose 2 since it results in fewer graph nodes in the egress path
*/
static u8*
mpls_tunnel_build_rewrite (vnet_main_t * vnm,
- u32 sw_if_index,
- vnet_link_t link_type,
- const void *dst_address)
+ u32 sw_if_index,
+ vnet_link_t link_type,
+ const void *dst_address)
{
- mpls_unicast_header_t *muh;
- mpls_tunnel_t *mt;
- u8 *rewrite;
- u32 mti, ii;
+ return (mpls_tunnel_build_rewrite_i());
+}
- rewrite = NULL;
- mti = mpls_tunnel_db[sw_if_index];
- mt = pool_elt_at_index(mpls_tunnel_pool, mti);
+typedef struct mpls_tunnel_collect_forwarding_ctx_t_
+{
+ load_balance_path_t * next_hops;
+ const mpls_tunnel_t *mt;
+ fib_forward_chain_type_t fct;
+} mpls_tunnel_collect_forwarding_ctx_t;
+
+static int
+mpls_tunnel_collect_forwarding (fib_node_index_t pl_index,
+ fib_node_index_t path_index,
+ void *arg)
+{
+ mpls_tunnel_collect_forwarding_ctx_t *ctx;
+ fib_path_ext_t *path_ext;
+ int have_path_ext;
+
+ ctx = arg;
/*
- * The vector must be allocated as u8 so the length is correct
+ * if the path is not resolved, don't include it.
*/
- ASSERT(0 < vec_len(mt->mt_label_stack));
- vec_validate(rewrite, (sizeof(*muh) * vec_len(mt->mt_label_stack)) - 1);
- ASSERT(rewrite);
- muh = (mpls_unicast_header_t *)rewrite;
+ if (!fib_path_is_resolved(path_index))
+ {
+ return (!0);
+ }
/*
- * The last (inner most) label in the stack may be EOS, all the rest Non-EOS
+ * get the matching path-extension for the path being visited.
*/
- for (ii = 0; ii < vec_len(mt->mt_label_stack)-1; ii++)
+ have_path_ext = 0;
+ vec_foreach(path_ext, ctx->mt->mt_path_exts)
{
- vnet_mpls_uc_set_label(&muh[ii].label_exp_s_ttl, mt->mt_label_stack[ii]);
- vnet_mpls_uc_set_ttl(&muh[ii].label_exp_s_ttl, 255);
- vnet_mpls_uc_set_exp(&muh[ii].label_exp_s_ttl, 0);
- vnet_mpls_uc_set_s(&muh[ii].label_exp_s_ttl, MPLS_NON_EOS);
- muh[ii].label_exp_s_ttl = clib_host_to_net_u32(muh[ii].label_exp_s_ttl);
+ if (path_ext->fpe_path_index == path_index)
+ {
+ have_path_ext = 1;
+ break;
+ }
}
- vnet_mpls_uc_set_label(&muh[ii].label_exp_s_ttl, mt->mt_label_stack[ii]);
- vnet_mpls_uc_set_ttl(&muh[ii].label_exp_s_ttl, 255);
- vnet_mpls_uc_set_exp(&muh[ii].label_exp_s_ttl, 0);
-
- if ((VNET_LINK_MPLS == link_type) &&
- (mt->mt_label_stack[ii] != MPLS_IETF_IMPLICIT_NULL_LABEL))
+ if (have_path_ext)
{
- vnet_mpls_uc_set_s(&muh[ii].label_exp_s_ttl, MPLS_NON_EOS);
+ /*
+ * found a matching extension. stack it to obtain the forwarding
+ * info for this path.
+ */
+ ctx->next_hops = fib_path_ext_stack(path_ext,
+ ctx->fct,
+ ctx->fct,
+ ctx->next_hops);
}
else
+ ASSERT(0);
+ /*
+ * else
+ * There should be a path-extenios associated with each path
+ */
+
+ return (!0);
+}
+
+static void
+mpls_tunnel_mk_lb (mpls_tunnel_t *mt,
+ vnet_link_t linkt,
+ fib_forward_chain_type_t fct,
+ dpo_id_t *dpo_lb)
+{
+ dpo_proto_t lb_proto;
+
+ /*
+ * If the entry has path extensions then we construct a load-balance
+ * by stacking the extensions on the forwarding chains of the paths.
+ * Otherwise we use the load-balance of the path-list
+ */
+ mpls_tunnel_collect_forwarding_ctx_t ctx = {
+ .mt = mt,
+ .next_hops = NULL,
+ .fct = fct,
+ };
+
+ /*
+ * As an optimisation we allocate the vector of next-hops to be sized
+ * equal to the maximum nuber of paths we will need, which is also the
+ * most likely number we will need, since in most cases the paths are 'up'.
+ */
+ vec_validate(ctx.next_hops, fib_path_list_get_n_paths(mt->mt_path_list));
+ vec_reset_length(ctx.next_hops);
+
+ lb_proto = vnet_link_to_dpo_proto(linkt);
+
+ fib_path_list_walk(mt->mt_path_list,
+ mpls_tunnel_collect_forwarding,
+ &ctx);
+
+ if (!dpo_id_is_valid(dpo_lb))
{
- vnet_mpls_uc_set_s(&muh[ii].label_exp_s_ttl, MPLS_EOS);
+ /*
+ * first time create
+ */
+ if (mt->mt_flags & MPLS_TUNNEL_FLAG_MCAST)
+ {
+ dpo_set(dpo_lb,
+ DPO_REPLICATE,
+ lb_proto,
+ replicate_create(0, lb_proto));
+ }
+ else
+ {
+ flow_hash_config_t fhc;
+
+ fhc = 0; // FIXME
+ /* fhc = fib_table_get_flow_hash_config(fib_entry->fe_fib_index, */
+ /* dpo_proto_to_fib(lb_proto)); */
+ dpo_set(dpo_lb,
+ DPO_LOAD_BALANCE,
+ lb_proto,
+ load_balance_create(0, lb_proto, fhc));
+ }
}
- muh[ii].label_exp_s_ttl = clib_host_to_net_u32(muh[ii].label_exp_s_ttl);
-
- return (rewrite);
+ if (mt->mt_flags & MPLS_TUNNEL_FLAG_MCAST)
+ {
+ /*
+ * MPLS multicast
+ */
+ replicate_multipath_update(dpo_lb, ctx.next_hops);
+ }
+ else
+ {
+ load_balance_multipath_update(dpo_lb,
+ ctx.next_hops,
+ LOAD_BALANCE_FLAG_NONE);
+ vec_free(ctx.next_hops);
+ }
}
/**
mt = mpls_tunnel_get_from_sw_if_index(sw_if_index);
if (NULL == mt)
- return;
+ return;
/*
- * find the adjacency that is contributed by the FIB path-list
- * that this tunnel resovles via, and use it as the next adj
- * in the midchain
+ * while we're stacking the adj, remove the tunnel from the child list
+ * of the path list. this breaks a circular dependency of walk updates
+ * where the create of adjacencies in the children can lead to walks
+ * that get back here.
*/
- if (vnet_hw_interface_get_flags(vnet_get_main(),
- mt->mt_hw_if_index) &
- VNET_HW_INTERFACE_FLAG_LINK_UP)
- {
- dpo_id_t dpo = DPO_INVALID;
+ fib_path_list_lock(mt->mt_path_list);
- fib_path_list_contribute_forwarding(mt->mt_path_list,
- mpls_tunnel_get_fwd_chain_type(mt),
- &dpo);
-
- if (DPO_LOAD_BALANCE == dpo.dpoi_type)
- {
- /*
- * we don't support multiple paths, so no need to load-balance.
- * pull the first and only choice and stack directly on that.
- */
- load_balance_t *lb;
-
- lb = load_balance_get (dpo.dpoi_index);
+ fib_path_list_child_remove(mt->mt_path_list,
+ mt->mt_sibling_index);
- ASSERT(1 == lb->lb_n_buckets);
+ /*
+ * Construct the DPO (load-balance or replicate) that we can stack
+ * the tunnel's midchain on
+ */
+ if (vnet_hw_interface_get_flags(vnet_get_main(),
+ mt->mt_hw_if_index) &
+ VNET_HW_INTERFACE_FLAG_LINK_UP)
+ {
+ dpo_id_t dpo = DPO_INVALID;
- dpo_copy(&dpo, load_balance_get_bucket_i (lb, 0));
- }
+ mpls_tunnel_mk_lb(mt,
+ adj->ia_link,
+ FIB_FORW_CHAIN_TYPE_MPLS_EOS,
+ &dpo);
- adj_nbr_midchain_stack(ai, &dpo);
- dpo_reset(&dpo);
+ adj_nbr_midchain_stack(ai, &dpo);
+ dpo_reset(&dpo);
}
else
{
- adj_nbr_midchain_unstack(ai);
+ adj_nbr_midchain_unstack(ai);
}
+
+ mt->mt_sibling_index = fib_path_list_child_add(mt->mt_path_list,
+ FIB_NODE_TYPE_MPLS_TUNNEL,
+ mt - mpls_tunnel_pool);
+
+ fib_path_list_lock(mt->mt_path_list);
}
/**
*/
static adj_walk_rc_t
mpls_adj_walk_cb (adj_index_t ai,
- void *ctx)
+ void *ctx)
{
mpls_tunnel_stack(ai);
*/
FOR_EACH_FIB_PROTOCOL(proto)
{
- adj_nbr_walk(mt->mt_sw_if_index,
- proto,
- mpls_adj_walk_cb,
- NULL);
+ adj_nbr_walk(mt->mt_sw_if_index,
+ proto,
+ mpls_adj_walk_cb,
+ NULL);
}
}
static clib_error_t *
mpls_tunnel_admin_up_down (vnet_main_t * vnm,
- u32 hw_if_index,
- u32 flags)
+ u32 hw_if_index,
+ u32 flags)
{
vnet_hw_interface_t * hi;
mpls_tunnel_t *mt;
mt = mpls_tunnel_get_from_sw_if_index(hi->sw_if_index);
if (NULL == mt)
- return (NULL);
+ return (NULL);
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 */);
mpls_tunnel_restack(mt);
*/
static void
mpls_tunnel_fixup (vlib_main_t *vm,
- ip_adjacency_t *adj,
- vlib_buffer_t *b0)
+ ip_adjacency_t *adj,
+ vlib_buffer_t *b0)
{
+ /*
+ * A no-op w.r.t. the header. but reset the 'have we pushed any
+ * MPLS labels onto the packet' flag. That way when we enter the
+ * tunnel we'll get a TTL set to 255
+ */
+ vnet_buffer(b0)->mpls.first = 0;
}
static void
mpls_tunnel_update_adj (vnet_main_t * vnm,
- u32 sw_if_index,
- adj_index_t ai)
+ u32 sw_if_index,
+ adj_index_t ai)
{
- adj_nbr_midchain_update_rewrite(
- ai, mpls_tunnel_fixup,
- ADJ_FLAG_NONE,
- mpls_tunnel_build_rewrite(vnm, sw_if_index,
- adj_get_link_type(ai),
- NULL));
+ ip_adjacency_t *adj;
+
+ ASSERT(ADJ_INDEX_INVALID != ai);
+
+ adj = adj_get(ai);
+
+ switch (adj->lookup_next_index)
+ {
+ case IP_LOOKUP_NEXT_ARP:
+ case IP_LOOKUP_NEXT_GLEAN:
+ adj_nbr_midchain_update_rewrite(ai, mpls_tunnel_fixup,
+ ADJ_FLAG_NONE,
+ mpls_tunnel_build_rewrite_i());
+ break;
+ case IP_LOOKUP_NEXT_MCAST:
+ /*
+ * Construct a partial rewrite from the known ethernet mcast dest MAC
+ * There's no MAC fixup, so the last 2 parameters are 0
+ */
+ adj_mcast_midchain_update_rewrite(ai, mpls_tunnel_fixup,
+ ADJ_FLAG_NONE,
+ mpls_tunnel_build_rewrite_i(),
+ 0, 0);
+ break;
+
+ case IP_LOOKUP_NEXT_DROP:
+ case IP_LOOKUP_NEXT_PUNT:
+ case IP_LOOKUP_NEXT_LOCAL:
+ case IP_LOOKUP_NEXT_REWRITE:
+ case IP_LOOKUP_NEXT_MIDCHAIN:
+ case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
+ case IP_LOOKUP_NEXT_ICMP_ERROR:
+ case IP_LOOKUP_N_NEXT:
+ ASSERT (0);
+ break;
+ }
mpls_tunnel_stack(ai);
}
static u8 *
format_mpls_tunnel_tx_trace (u8 * s,
- va_list * args)
+ 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 *);
*/
static uword
mpls_tunnel_tx (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
u32 next_index;
u32 * from, * to_next, n_left_from, n_left_to_next;
* FIXME DUAL LOOP
*/
while (n_left_from > 0 && n_left_to_next > 0)
- {
- vlib_buffer_t * b0;
- u32 bi0;
+ {
+ vlib_buffer_t * b0;
+ u32 bi0;
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
- b0 = vlib_get_buffer(vm, bi0);
+ b0 = vlib_get_buffer(vm, bi0);
- vnet_buffer(b0)->ip.adj_index[VLIB_TX] = mt->mt_l2_adj;
+ vnet_buffer(b0)->ip.adj_index[VLIB_TX] = mt->mt_l2_adj;
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- mpls_tunnel_trace_t *tr = vlib_add_trace (vm, node,
- b0, sizeof (*tr));
- tr->tunnel_id = rd->dev_instance;
- }
+ if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ mpls_tunnel_trace_t *tr = vlib_add_trace (vm, node,
+ b0, sizeof (*tr));
+ tr->tunnel_id = rd->dev_instance;
+ }
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, mt->mt_l2_tx_arc);
- }
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, mt->mt_l2_tx_arc);
+ }
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
*/
void
mpls_tunnel_walk (mpls_tunnel_walk_cb_t cb,
- void *ctx)
+ void *ctx)
{
u32 mti;
pool_foreach_index(mti, mpls_tunnel_pool,
({
- cb(mti, ctx);
+ cb(mti, ctx);
}));
}
mt = mpls_tunnel_get_from_sw_if_index(sw_if_index);
if (NULL == mt)
- return;
-
- fib_path_list_child_remove(mt->mt_path_list,
- mt->mt_sibling_index);
- if (ADJ_INDEX_INVALID != mt->mt_l2_adj)
- adj_unlock(mt->mt_l2_adj);
+ return;
- vec_free(mt->mt_label_stack);
+ if (FIB_NODE_INDEX_INVALID != mt->mt_path_list)
+ fib_path_list_child_remove(mt->mt_path_list,
+ mt->mt_sibling_index);
+ if (ADJ_INDEX_INVALID != mt->mt_l2_adj)
+ adj_unlock(mt->mt_l2_adj);
vec_add1 (mpls_tunnel_free_hw_if_indices, mt->mt_hw_if_index);
pool_put(mpls_tunnel_pool, mt);
mpls_tunnel_db[sw_if_index] = ~0;
}
-void
-vnet_mpls_tunnel_add (fib_route_path_t *rpaths,
- mpls_label_t *label_stack,
- u8 l2_only,
- u32 *sw_if_index)
+u32
+vnet_mpls_tunnel_create (u8 l2_only,
+ u8 is_multicast)
{
vnet_hw_interface_t * hi;
mpls_tunnel_t *mt;
mti = mt - mpls_tunnel_pool;
fib_node_init(&mt->mt_node, FIB_NODE_TYPE_MPLS_TUNNEL);
mt->mt_l2_adj = ADJ_INDEX_INVALID;
+ mt->mt_path_list = FIB_NODE_INDEX_INVALID;
+ mt->mt_sibling_index = FIB_NODE_INDEX_INVALID;
+
+ if (is_multicast)
+ mt->mt_flags |= MPLS_TUNNEL_FLAG_MCAST;
/*
* Create a new, or re=use and old, tunnel HW interface
*/
if (vec_len (mpls_tunnel_free_hw_if_indices) > 0)
{
- mt->mt_hw_if_index =
- mpls_tunnel_free_hw_if_indices[vec_len(mpls_tunnel_free_hw_if_indices)-1];
- _vec_len (mpls_tunnel_free_hw_if_indices) -= 1;
- hi = vnet_get_hw_interface (vnm, mt->mt_hw_if_index);
- hi->hw_instance = mti;
- hi->dev_instance = mti;
+ mt->mt_hw_if_index =
+ mpls_tunnel_free_hw_if_indices[vec_len(mpls_tunnel_free_hw_if_indices)-1];
+ _vec_len (mpls_tunnel_free_hw_if_indices) -= 1;
+ hi = vnet_get_hw_interface (vnm, mt->mt_hw_if_index);
+ hi->hw_instance = mti;
+ hi->dev_instance = mti;
}
- else
+ else
{
- mt->mt_hw_if_index = vnet_register_interface(
- vnm,
- mpls_tunnel_class.index,
- mti,
- mpls_tunnel_hw_interface_class.index,
- mti);
- hi = vnet_get_hw_interface(vnm, mt->mt_hw_if_index);
+ mt->mt_hw_if_index = vnet_register_interface(
+ vnm,
+ mpls_tunnel_class.index,
+ mti,
+ mpls_tunnel_hw_interface_class.index,
+ mti);
+ hi = vnet_get_hw_interface(vnm, mt->mt_hw_if_index);
}
/*
vec_validate_init_empty(mpls_tunnel_db, mt->mt_sw_if_index, ~0);
mpls_tunnel_db[mt->mt_sw_if_index] = mti;
+ if (l2_only)
+ {
+ mt->mt_l2_adj =
+ adj_nbr_add_or_lock(fib_path_list_get_proto(mt->mt_path_list),
+ VNET_LINK_ETHERNET,
+ &zero_addr,
+ mt->mt_sw_if_index);
+
+ mt->mt_l2_tx_arc = vlib_node_add_named_next(vlib_get_main(),
+ hi->tx_node_index,
+ "adj-l2-midchain");
+ }
+
+ return (mt->mt_sw_if_index);
+}
+
+/*
+ * mpls_tunnel_path_ext_add
+ *
+ * append a path extension to the entry's list
+ */
+static void
+mpls_tunnel_path_ext_append (mpls_tunnel_t *mt,
+ const fib_route_path_t *rpath)
+{
+ if (NULL != rpath->frp_label_stack)
+ {
+ fib_path_ext_t *path_ext;
+
+ vec_add2(mt->mt_path_exts, path_ext, 1);
+
+ fib_path_ext_init(path_ext, mt->mt_path_list, rpath);
+ }
+}
+
+/*
+ * mpls_tunnel_path_ext_insert
+ *
+ * insert, sorted, a path extension to the entry's list.
+ * It's not strictly necessary in sort the path extensions, since each
+ * extension has the path index to which it resolves. However, by being
+ * sorted the load-balance produced has a deterministic order, not an order
+ * based on the sequence of extension additions. this is a considerable benefit.
+ */
+static void
+mpls_tunnel_path_ext_insert (mpls_tunnel_t *mt,
+ const fib_route_path_t *rpath)
+{
+ if (0 == vec_len(mt->mt_path_exts))
+ return (mpls_tunnel_path_ext_append(mt, rpath));
+
+ if (NULL != rpath->frp_label_stack)
+ {
+ fib_path_ext_t path_ext;
+ int i = 0;
+
+ fib_path_ext_init(&path_ext, mt->mt_path_list, rpath);
+
+ while (i < vec_len(mt->mt_path_exts) &&
+ (fib_path_ext_cmp(&mt->mt_path_exts[i], rpath) < 0))
+ {
+ i++;
+ }
+
+ vec_insert_elts(mt->mt_path_exts, &path_ext, 1, i);
+ }
+}
+
+void
+vnet_mpls_tunnel_path_add (u32 sw_if_index,
+ fib_route_path_t *rpaths)
+{
+ mpls_tunnel_t *mt;
+ u32 mti;
+
+ mt = mpls_tunnel_get_from_sw_if_index(sw_if_index);
+
+ if (NULL == mt)
+ return;
+
+ mti = mt - mpls_tunnel_pool;
+
/*
* construct a path-list from the path provided
*/
- mt->mt_path_list = fib_path_list_create(FIB_PATH_LIST_FLAG_SHARED, rpaths);
- mt->mt_sibling_index = fib_path_list_child_add(mt->mt_path_list,
- FIB_NODE_TYPE_MPLS_TUNNEL,
- mti);
+ if (FIB_NODE_INDEX_INVALID == mt->mt_path_list)
+ {
+ mt->mt_path_list = fib_path_list_create(FIB_PATH_LIST_FLAG_SHARED, rpaths);
+ mt->mt_sibling_index = fib_path_list_child_add(mt->mt_path_list,
+ FIB_NODE_TYPE_MPLS_TUNNEL,
+ mti);
+ }
+ else
+ {
+ fib_node_index_t old_pl_index;
+ fib_path_ext_t *path_ext;
+
+ old_pl_index = mt->mt_path_list;
+
+ mt->mt_path_list =
+ fib_path_list_copy_and_path_add(old_pl_index,
+ FIB_PATH_LIST_FLAG_SHARED,
+ rpaths);
+
+ fib_path_list_child_remove(old_pl_index,
+ mt->mt_sibling_index);
+ mt->mt_sibling_index = fib_path_list_child_add(mt->mt_path_list,
+ FIB_NODE_TYPE_MPLS_TUNNEL,
+ mti);
+ /*
+ * re-resolve all the path-extensions with the new path-list
+ */
+ vec_foreach(path_ext, mt->mt_path_exts)
+ {
+ fib_path_ext_resolve(path_ext, mt->mt_path_list);
+ }
+ }
+ mpls_tunnel_path_ext_insert(mt, rpaths);
+ mpls_tunnel_restack(mt);
+}
+
+int
+vnet_mpls_tunnel_path_remove (u32 sw_if_index,
+ fib_route_path_t *rpaths)
+{
+ mpls_tunnel_t *mt;
+ u32 mti;
- mt->mt_label_stack = vec_dup(label_stack);
+ mt = mpls_tunnel_get_from_sw_if_index(sw_if_index);
- if (l2_only)
+ if (NULL == mt)
+ return (0);
+
+ mti = mt - mpls_tunnel_pool;
+
+ /*
+ * construct a path-list from the path provided
+ */
+ if (FIB_NODE_INDEX_INVALID == mt->mt_path_list)
{
- mt->mt_l2_adj =
- adj_nbr_add_or_lock(fib_path_list_get_proto(mt->mt_path_list),
- VNET_LINK_ETHERNET,
- &zero_addr,
- mt->mt_sw_if_index);
-
- mt->mt_l2_tx_arc = vlib_node_add_named_next(vlib_get_main(),
- hi->tx_node_index,
- "adj-l2-midchain");
+ /* can't remove a path if we have onoe */
+ return (0);
}
-
- *sw_if_index = mt->mt_sw_if_index;
+ else
+ {
+ fib_node_index_t old_pl_index;
+ fib_path_ext_t *path_ext;
+
+ old_pl_index = mt->mt_path_list;
+
+ mt->mt_path_list =
+ fib_path_list_copy_and_path_remove(old_pl_index,
+ FIB_PATH_LIST_FLAG_SHARED,
+ rpaths);
+
+ fib_path_list_child_remove(old_pl_index,
+ mt->mt_sibling_index);
+
+ if (FIB_NODE_INDEX_INVALID == mt->mt_path_list)
+ {
+ /* no paths left */
+ return (0);
+ }
+ else
+ {
+ mt->mt_sibling_index =
+ fib_path_list_child_add(mt->mt_path_list,
+ FIB_NODE_TYPE_MPLS_TUNNEL,
+ mti);
+ }
+ /*
+ * find the matching path extension and remove it
+ */
+ vec_foreach(path_ext, mt->mt_path_exts)
+ {
+ if (!fib_path_ext_cmp(path_ext, rpaths))
+ {
+ /*
+ * delete the element moving the remaining elements down 1 position.
+ * this preserves the sorted order.
+ */
+ vec_free(path_ext->fpe_label_stack);
+ vec_delete(mt->mt_path_exts, 1,
+ (path_ext - mt->mt_path_exts));
+ break;
+ }
+ }
+ /*
+ * re-resolve all the path-extensions with the new path-list
+ */
+ vec_foreach(path_ext, mt->mt_path_exts)
+ {
+ fib_path_ext_resolve(path_ext, mt->mt_path_list);
+ }
+
+ mpls_tunnel_restack(mt);
+ }
+
+ return (fib_path_list_get_n_paths(mt->mt_path_list));
}
+
static clib_error_t *
vnet_create_mpls_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_main_t * vnm = vnet_get_main();
- u8 is_del = 0;
- u8 l2_only = 0;
+ u8 is_del = 0, l2_only = 0, is_multicast =0;
fib_route_path_t rpath, *rpaths = NULL;
- mpls_label_t out_label = MPLS_LABEL_INVALID, *labels = NULL;
+ mpls_label_t out_label = MPLS_LABEL_INVALID;
u32 sw_if_index;
clib_error_t *error = NULL;
/* Get a line of input. */
if (! unformat_user (input, unformat_line_input, line_input))
- return 0;
+ return 0;
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat (line_input, "del %U",
- unformat_vnet_sw_interface, vnm,
- &sw_if_index))
- is_del = 1;
- else if (unformat (line_input, "add"))
- is_del = 0;
- else if (unformat (line_input, "out-label %U",
- unformat_mpls_unicast_label, &out_label))
- {
- vec_add1(labels, out_label);
- }
- else if (unformat (line_input, "via %U %U",
- unformat_ip4_address,
- &rpath.frp_addr.ip4,
- unformat_vnet_sw_interface, vnm,
- &rpath.frp_sw_if_index))
- {
- rpath.frp_weight = 1;
- rpath.frp_proto = FIB_PROTOCOL_IP4;
- }
-
- else if (unformat (line_input, "via %U %U",
- unformat_ip6_address,
- &rpath.frp_addr.ip6,
- unformat_vnet_sw_interface, vnm,
- &rpath.frp_sw_if_index))
- {
- rpath.frp_weight = 1;
- rpath.frp_proto = FIB_PROTOCOL_IP6;
- }
- else if (unformat (line_input, "via %U",
- unformat_ip6_address,
- &rpath.frp_addr.ip6))
- {
- rpath.frp_fib_index = 0;
- rpath.frp_weight = 1;
- rpath.frp_sw_if_index = ~0;
- rpath.frp_proto = FIB_PROTOCOL_IP6;
- }
- else if (unformat (line_input, "via %U",
- unformat_ip4_address,
- &rpath.frp_addr.ip4))
- {
- rpath.frp_fib_index = 0;
- rpath.frp_weight = 1;
- rpath.frp_sw_if_index = ~0;
- rpath.frp_proto = FIB_PROTOCOL_IP4;
- }
- else if (unformat (line_input, "l2-only"))
- l2_only = 1;
- else
- {
- error = clib_error_return (0, "unknown input '%U'",
- format_unformat_error, line_input);
- goto done;
- }
+ if (unformat (line_input, "del %U",
+ unformat_vnet_sw_interface, vnm,
+ &sw_if_index))
+ is_del = 1;
+ else if (unformat (line_input, "add"))
+ is_del = 0;
+ else if (unformat (line_input, "out-label %U",
+ unformat_mpls_unicast_label, &out_label))
+ {
+ vec_add1(rpath.frp_label_stack, out_label);
+ }
+ else if (unformat (line_input, "via %U %U",
+ unformat_ip4_address,
+ &rpath.frp_addr.ip4,
+ unformat_vnet_sw_interface, vnm,
+ &rpath.frp_sw_if_index))
+ {
+ rpath.frp_weight = 1;
+ rpath.frp_proto = FIB_PROTOCOL_IP4;
+ }
+
+ else if (unformat (line_input, "via %U %U",
+ unformat_ip6_address,
+ &rpath.frp_addr.ip6,
+ unformat_vnet_sw_interface, vnm,
+ &rpath.frp_sw_if_index))
+ {
+ rpath.frp_weight = 1;
+ rpath.frp_proto = FIB_PROTOCOL_IP6;
+ }
+ else if (unformat (line_input, "via %U",
+ unformat_ip6_address,
+ &rpath.frp_addr.ip6))
+ {
+ rpath.frp_fib_index = 0;
+ rpath.frp_weight = 1;
+ rpath.frp_sw_if_index = ~0;
+ rpath.frp_proto = FIB_PROTOCOL_IP6;
+ }
+ else if (unformat (line_input, "via %U",
+ unformat_ip4_address,
+ &rpath.frp_addr.ip4))
+ {
+ rpath.frp_fib_index = 0;
+ rpath.frp_weight = 1;
+ rpath.frp_sw_if_index = ~0;
+ rpath.frp_proto = FIB_PROTOCOL_IP4;
+ }
+ else if (unformat (line_input, "l2-only"))
+ l2_only = 1;
+ else if (unformat (line_input, "multicast"))
+ is_multicast = 1;
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
}
if (is_del)
{
- vnet_mpls_tunnel_del(sw_if_index);
+ vnet_mpls_tunnel_del(sw_if_index);
}
else
{
- if (0 == vec_len(labels))
- {
- error = clib_error_return (0, "No Output Labels '%U'",
- format_unformat_error, line_input);
- goto done;
- }
-
- vec_add1(rpaths, rpath);
- vnet_mpls_tunnel_add(rpaths, labels, l2_only, &sw_if_index);
+ if (0 == vec_len(rpath.frp_label_stack))
+ {
+ error = clib_error_return (0, "No Output Labels '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+
+ vec_add1(rpaths, rpath);
+ sw_if_index = vnet_mpls_tunnel_create(l2_only, is_multicast);
+ vnet_mpls_tunnel_path_add(sw_if_index, rpaths);
}
done:
- vec_free(labels);
vec_free(rpaths);
unformat_free (line_input);
?*/
VLIB_CLI_COMMAND (create_mpls_tunnel_command, static) = {
.path = "mpls tunnel",
- .short_help =
+ .short_help =
"mpls tunnel via [addr] [interface] [out-labels]",
.function = vnet_create_mpls_tunnel_command_fn,
};
format_mpls_tunnel (u8 * s, va_list * args)
{
mpls_tunnel_t *mt = va_arg (*args, mpls_tunnel_t *);
- int ii;
+ mpls_tunnel_attribute_t attr;
+ fib_path_ext_t *path_ext;
s = format(s, "mpls_tunnel%d: sw_if_index:%d hw_if_index:%d",
- mt - mpls_tunnel_pool,
- mt->mt_sw_if_index,
- mt->mt_hw_if_index);
- s = format(s, "\n label-stack:\n ");
- for (ii = 0; ii < vec_len(mt->mt_label_stack); ii++)
- {
- s = format(s, "%d, ", mt->mt_label_stack[ii]);
+ mt - mpls_tunnel_pool,
+ mt->mt_sw_if_index,
+ mt->mt_hw_if_index);
+ if (MPLS_TUNNEL_FLAG_NONE != mt->mt_flags) {
+ s = format(s, " \n flags:");
+ FOR_EACH_MPLS_TUNNEL_ATTRIBUTE(attr) {
+ if ((1<<attr) & mt->mt_flags) {
+ s = format (s, "%s,", mpls_tunnel_attribute_names[attr]);
+ }
+ }
}
s = format(s, "\n via:\n");
s = fib_path_list_format(mt->mt_path_list, s);
+ s = format(s, " Extensions:");
+ vec_foreach(path_ext, mt->mt_path_exts)
+ {
+ s = format(s, "\n %U", format_fib_path_ext, path_ext);
+ }
s = format(s, "\n");
return (s);
static clib_error_t *
show_mpls_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)
{
mpls_tunnel_t * mt;
u32 mti = ~0;
if (pool_elts (mpls_tunnel_pool) == 0)
- vlib_cli_output (vm, "No MPLS tunnels configured...");
+ vlib_cli_output (vm, "No MPLS tunnels configured...");
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat (input, "%d", &mti))
- ;
- else
- break;
+ if (unformat (input, "%d", &mti))
+ ;
+ else
+ break;
}
if (~0 == mti)
{
- pool_foreach (mt, mpls_tunnel_pool,
- ({
- vlib_cli_output (vm, "[@%d] %U",
- mt - mpls_tunnel_pool,
- format_mpls_tunnel, mt);
- }));
+ pool_foreach (mt, mpls_tunnel_pool,
+ ({
+ vlib_cli_output (vm, "[@%d] %U",
+ mt - mpls_tunnel_pool,
+ format_mpls_tunnel, mt);
+ }));
}
else
{
- if (pool_is_free_index(mpls_tunnel_pool, mti))
- return clib_error_return (0, "Not atunnel index %d", mti);
+ if (pool_is_free_index(mpls_tunnel_pool, mti))
+ return clib_error_return (0, "Not atunnel index %d", mti);
- mt = pool_elt_at_index(mpls_tunnel_pool, mti);
+ mt = pool_elt_at_index(mpls_tunnel_pool, mti);
- vlib_cli_output (vm, "[@%d] %U",
- mt - mpls_tunnel_pool,
- format_mpls_tunnel, mt);
+ vlib_cli_output (vm, "[@%d] %U",
+ mt - mpls_tunnel_pool,
+ format_mpls_tunnel, mt);
}
return 0;
* @cliexstart{sh mpls tunnel 2}
* [@2] mpls_tunnel2: sw_if_index:5 hw_if_index:5
* label-stack:
- * 3,
+ * 3,
* via:
* index:26 locks:1 proto:ipv4 uPRF-list:26 len:1 itfs:[2, ]
* index:26 pl-index:26 ipv4 weight=1 attached-nexthop: oper-flags:resolved,
*/
static fib_node_back_walk_rc_t
mpls_tunnel_back_walk (fib_node_t *node,
- fib_node_back_walk_ctx_t *ctx)
+ fib_node_back_walk_ctx_t *ctx)
{
mpls_tunnel_restack(mpls_tunnel_from_fib_node(node));
Code Review / vpp.git / blobdiff