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net: pim: add a helper to check for IPv4 all pim routers address

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Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2016-10-31 13:21:03 +01:00 committed by David S. Miller
parent 556d299fcb
commit 20bb6ce987
1 changed files with 6 additions and 0 deletions
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6
include/linux/pim.h
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@ -57,4 +57,10 @@ static inline u8 pim_hdr_type(const struct pimhdr *pimhdr)
{
return pimhdr->type & 0xf;
}
/* check if the address is 224.0.0.13, RFC7761 sec 4.3.1 */
static inline bool pim_ipv4_all_pim_routers(__be32 addr)
{
return addr == htonl(0xE000000D);
}
#endif