Distributed Virtual Router Support - vpp - Vector Packet Processing

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author	Neale Ranns <nranns@cisco.com>	2017-10-03 08:20:21 -0700
committer	Damjan Marion <dmarion.lists@gmail.com>	2017-10-05 09:50:26 +0000
commit	6f6311560380d0e992f710558e213df1b098ef94 (patch)
tree	237e34a2165ed5d2fc0848a1daec457ce57acc3e /src/vlibsocket
parent	d3c008d108aa2187d1a2afe2833b4de25ca2c2ab (diff)

Distributed Virtual Router Support

A distributed virtual router works by attmpeting to switch a packet, but on failing to find a local consumer (i.e. the packet is destined to a locally attached host) then the packet is sent unmodified 'upstream' to where the rest of the 'distributed' router is present. When L3 switching a packet this means the L2 header must not be modifed. This patch adds a 'l2-bridge' object to the L3 FIB which re-injects packets from the L3 path back into the L2 path - use with extreme caution. Change-Id: I069724eb45956647d7980cbe40a80a788ee6ee82 Signed-off-by: Neale Ranns <nranns@cisco.com>

Diffstat (limited to 'src/vlibsocket')

0 files changed, 0 insertions, 0 deletions

/* * Copyright (c) 2015 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef included_clib_fheap_h #define included_clib_fheap_h /* Fibonacci Heaps Fredman, M. L.; Tarjan (1987). "Fibonacci heaps and their uses in improved network optimization algorithms" */ #include <vppinfra/vec.h> typedef struct { /* Node index of parent. */ u32 parent; /* Node index of first child. */ u32 first_child; /* Next and previous nodes in doubly linked list of siblings. */ u32 next_sibling, prev_sibling; /* Key (distance) for this node. Parent always has key <= than keys of children. */ u32 key; /* Number of children (as opposed to descendents). */ u32 rank; u32 is_marked; /* Set to one when node is inserted; zero when deleted. */ u32 is_valid; } fheap_node_t; #define foreach_fheap_node_sibling(f,ni,first_ni,body) \ do { \ u32 __fheap_foreach_first_ni = (first_ni); \ u32 __fheap_foreach_ni = __fheap_foreach_first_ni; \ u32 __fheap_foreach_next_ni; \ fheap_node_t * __fheap_foreach_n; \ if (__fheap_foreach_ni != ~0) \ while (1) \ { \ __fheap_foreach_n = fheap_get_node ((f), __fheap_foreach_ni); \ __fheap_foreach_next_ni = __fheap_foreach_n -> next_sibling; \ (ni) = __fheap_foreach_ni; \ \ body; \ \ /* End of circular list? */ \ if (__fheap_foreach_next_ni == __fheap_foreach_first_ni) \ break; \ \ __fheap_foreach_ni = __fheap_foreach_next_ni; \ \ } \ } while (0) typedef struct { u32 min_root; /* Vector of nodes. */ fheap_node_t *nodes; u32 *root_list_by_rank; u32 enable_validate; u32 validate_serial; } fheap_t; /* Initialize empty heap. */ always_inline void fheap_init (fheap_t * f, u32 n_nodes) { fheap_node_t *save_nodes = f->nodes; u32 *save_root_list = f->root_list_by_rank; clib_memset (f, 0, sizeof (f[0])); f->nodes = save_nodes; f->root_list_by_rank = save_root_list; vec_validate (f->nodes, n_nodes - 1); vec_reset_length (f->root_list_by_rank); f->min_root = ~0; } always_inline void fheap_free (fheap_t * f) { vec_free (f->nodes); vec_free (f->root_list_by_rank); } always_inline u32 fheap_find_min (fheap_t * f) { return f->min_root; } always_inline u32 fheap_is_empty (fheap_t * f) { return f->min_root == ~0; } /* Add/delete nodes. */ void fheap_add (fheap_t * f, u32 ni, u32 key); void fheap_del (fheap_t * f, u32 ni); /* Delete and return minimum. */ u32 fheap_del_min (fheap_t * f, u32 * min_key); /* Change key value. */ void fheap_decrease_key (fheap_t * f, u32 ni, u32 new_key); #endif /* included_clib_fheap_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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