diff options
Diffstat (limited to 'proto/rip')
| -rw-r--r-- | proto/rip/rip.c | 48 |
1 files changed, 37 insertions, 11 deletions
diff --git a/proto/rip/rip.c b/proto/rip/rip.c index 22223d3..ba19a79 100644 --- a/proto/rip/rip.c +++ b/proto/rip/rip.c @@ -13,22 +13,12 @@ FIXME (nonurgent): fold rip_connection into rip_interface? - We are not going to honour requests for sending part of - routing table. That would need to turn split horizon off, - etc. - - Triggered updates. When triggered update was sent, don't send - new one for something between 1 and 5 seconds (and send one - after that), says RFC. We do something else: once in 5 second - we look for any changed routes and broadcast them. - FIXME: (nonurgent) allow bigger frequencies than 1 regular update in 6 seconds (?) FIXME: propagation of metric=infinity into main routing table may or may not be good idea. FIXME: mj wants us to be able to format attributes: - Each protocol can now register its own attribute class (protocol->attr_class, - set to EAP_xxx) and also a callback for naming and formatting of attributes. + and also a callback for naming and formatting of attributes. The callback can return one of the following results: GA_UNKNOWN Attribute not recognized. @@ -468,6 +458,28 @@ rip_timer(timer *t) DBG( "RIP: tick tock done\n" ); } +/** + * rip_start - initialize instance of rip + * + * Rip is pretty simple protocol so half of this code is interface + * with core. We maintain our own linklist of &rip_entry - it serves + * as our small routing table. Within rip_tx(), this list is + * walked, and packet is generated using rip_tx_prepare(). This gets + * tricky because we may need to send more than one packet to one + * destination. Struct &rip_connection is used to hold info such as how + * many of &rip_entry ies we already send, and is also used to protect + * from two concurrent sends to one destination. Each &rip_interface has + * at most one &rip_connection. + * + * We are not going to honour requests for sending part of + * routing table. That would need to turn split horizon off, + * etc. + * + * Triggered updates. RFC says: when triggered update was sent, don't send + * new one for something between 1 and 5 seconds (and send one + * after that). We do something else: once in 5 second + * we look for any changed routes and broadcast them. + */ static int rip_start(struct proto *p) { @@ -834,12 +846,26 @@ rip_preconfig(struct protocol *x, struct config *c) DBG( "RIP: preconfig\n" ); } +static int +rip_get_attr(eattr *a, byte *buf) +{ + unsigned int i = EA_ID(a->id); + struct attr_desc *d; + + switch (a->id) { + case EA_RIP_METRIC: buf += bsprintf( buf, "metric: %d", a->u.data ); return GA_FULL; + case EA_RIP_TAG: buf += bsprintf( buf, "tag: %d", a->u.data ); return GA_FULL; + default: return GA_UNKNOWN; + } +} + struct protocol proto_rip = { name: "RIP", template: "rip%d", attr_class: EAP_RIP, preconfig: rip_preconfig, get_route_info: rip_get_route_info, + get_attr: rip_get_attr, init: rip_init, dump: rip_dump, |