diff options
Diffstat (limited to 'babeld/neighbour.h')
| -rw-r--r-- | babeld/neighbour.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/babeld/neighbour.h b/babeld/neighbour.h new file mode 100644 index 0000000..39ee7e4 --- /dev/null +++ b/babeld/neighbour.h @@ -0,0 +1,64 @@ +/* +Copyright (c) 2007, 2008 by Juliusz Chroboczek + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +#ifndef BABEL_NEIGHBOUR_H +#define BABEL_NEIGHBOUR_H + +struct neighbour { + struct neighbour *next; + /* This is -1 when unknown, so don't make it unsigned */ + int hello_seqno; + unsigned char address[16]; + unsigned short reach; + unsigned short txcost; + struct timeval hello_time; + struct timeval ihu_time; + unsigned short hello_interval; /* in centiseconds */ + unsigned short ihu_interval; /* in centiseconds */ + /* Used for RTT estimation. */ + /* Absolute time (modulo 2^32) at which the Hello was sent, + according to remote clock. */ + unsigned int hello_send_us; + struct timeval hello_rtt_receive_time; + unsigned int rtt; + struct timeval rtt_time; + struct interface *ifp; +}; + +extern struct neighbour *neighs; + +#define FOR_ALL_NEIGHBOURS(_neigh) \ + for(_neigh = neighs; _neigh; _neigh = _neigh->next) + +int neighbour_valid(struct neighbour *neigh); +void flush_neighbour(struct neighbour *neigh); +struct neighbour *find_neighbour(const unsigned char *address, + struct interface *ifp); +int update_neighbour(struct neighbour *neigh, int hello, int hello_interval); +unsigned check_neighbours(void); +unsigned neighbour_txcost(struct neighbour *neigh); +unsigned neighbour_rxcost(struct neighbour *neigh); +unsigned neighbour_rttcost(struct neighbour *neigh); +unsigned neighbour_cost(struct neighbour *neigh); +int valid_rtt(struct neighbour *neigh); + +#endif /* BABEL_NEIGHBOUR_H */ |