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pimd: Add RP check code

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Add the ability for the node to determine if it is the RP or not.
Currently this only allows static RP's.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2015-10-02 09:30:02 -07:00 committed by Donald Sharp
parent 8f5f5e91b6
commit 54b97c74fe
2 changed files with 50 additions and 0 deletions
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48
pimd/pim_rp.c
View File

@ -20,11 +20,59 @@
*/
#include <zebra.h>
#include "log.h"
#include "network.h"
#include "pimd.h"
#include "pim_str.h"
#include "pim_rp.h"
static int i_am_rp = 0;
/*
* Checks to see if we should elect ourself the actual RP
*/
void
pim_rp_check_rp (struct in_addr old, struct in_addr new)
{
if (PIM_DEBUG_ZEBRA) {
char sold[100];
char snew[100];
char rp[100];
pim_inet4_dump("<rp?>", qpim_rp, rp, sizeof(rp));
pim_inet4_dump("<old?>", old, sold, sizeof(sold));
pim_inet4_dump("<new?>", new, snew, sizeof(snew));
zlog_debug("%s: %s for old %s new %s", __func__, rp, sold, snew );
}
if (qpim_rp.s_addr == 0)
return;
if (new.s_addr == qpim_rp.s_addr)
{
i_am_rp = 1;
return;
}
if (old.s_addr == qpim_rp.s_addr)
{
i_am_rp = 0;
return;
}
}
/*
* I_am_RP(G) is true if the group-to-RP mapping indicates that
* this router is the RP for the group.
*
* Since we only have static RP, all groups are part of this RP
*/
int
pim_rp_i_am_rp (struct in_addr group)
{
return i_am_rp;
}
/*
* Set the upstream IP address we want to talk to based upon
* the rp configured and the source address

2
pimd/pim_rp.h
View File

@ -21,6 +21,8 @@
#ifndef PIM_RP_H
#define PIM_RP_H
void pim_rp_check_rp (struct in_addr old, struct in_addr new);
int pim_rp_i_am_rp (struct in_addr group);
int pim_rp_set_upstream_addr (struct in_addr *up, struct in_addr source);
#endif