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Use bit_count(3) instead of four bitcount32() calls.

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Reviewed by:	asomers, ngie
Differential Revision:	https://reviews.freebsd.org/D6543
This commit is contained in:
Jung-uk Kim 2016-05-26 18:57:26 +00:00
parent 9729cf0934
commit a42aa5facd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=300771
1 changed files with 17 additions and 18 deletions
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35
sys/netgraph/netflow/netflow.c
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@ -34,6 +34,7 @@ __FBSDID("$FreeBSD$");
#include "opt_inet6.h"
#include "opt_route.h"
#include <sys/param.h>
#include <sys/bitstring.h>
#include <sys/systm.h>
#include <sys/counter.h>
#include <sys/kernel.h>
@ -147,6 +148,19 @@ ip6_hash(struct flow6_rec *r)
r->dst.r_dst6.__u6_addr.__u6_addr32[3]);
}
}
static inline int
ip6_masklen(struct in6_addr *saddr, struct rt_addrinfo *info)
{
const int nbits = sizeof(*saddr) * NBBY;
int mlen;
if (info->rti_addrs & RTA_NETMASK)
bit_count((bitstr_t *)saddr, 0, nbits, &mlen);
else
mlen = nbits;
return (mlen);
}
#endif
/*
@ -399,11 +413,6 @@ hash_insert(priv_p priv, struct flow_hash_entry *hsh, struct flow_rec *r,
}
#ifdef INET6
/* XXX: make normal function, instead of.. */
#define ipv6_masklen(x) bitcount32((x).__u6_addr.__u6_addr32[0]) + \
bitcount32((x).__u6_addr.__u6_addr32[1]) + \
bitcount32((x).__u6_addr.__u6_addr32[2]) + \
bitcount32((x).__u6_addr.__u6_addr32[3])
static int
hash6_insert(priv_p priv, struct flow_hash_entry *hsh6, struct flow6_rec *r,
int plen, uint8_t flags, uint8_t tcp_flags)
@ -460,11 +469,7 @@ hash6_insert(priv_p priv, struct flow_hash_entry *hsh6, struct flow6_rec *r,
fle6->f.n.next_hop6 =
((struct sockaddr_in6 *)&rt_gateway)->sin6_addr;
if (info.rti_addrs & RTA_NETMASK)
fle6->f.dst_mask =
ipv6_masklen(sin6_mask.sin6_addr);
else
fle6->f.dst_mask = 128;
fle6->f.dst_mask = ip6_masklen(&sin6_mask.sin6_addr, &info);
rib_free_info(&info);
}
@ -483,13 +488,8 @@ hash6_insert(priv_p priv, struct flow_hash_entry *hsh6, struct flow6_rec *r,
info.rti_info[RTAX_NETMASK] = (struct sockaddr *)&sin6_mask;
if (rib_lookup_info(r->fib, (struct sockaddr *)&sin6, 0, 0,
&info) == 0) {
if (info.rti_addrs & RTA_NETMASK)
fle6->f.src_mask =
ipv6_masklen(sin6_mask.sin6_addr);
else
fle6->f.src_mask = 128;
}
&info) == 0)
fle6->f.src_mask = ip6_masklen(&sin6_mask.sin6_addr, &info);
}
/* Push new flow at the and of hash. */
@ -497,7 +497,6 @@ hash6_insert(priv_p priv, struct flow_hash_entry *hsh6, struct flow6_rec *r,
return (0);
}
#undef ipv6_masklen
#endif