diff options
| -rw-r--r-- | sys/net/pf.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/sys/net/pf.c b/sys/net/pf.c index 85731a47212..5c186552d0d 100644 --- a/sys/net/pf.c +++ b/sys/net/pf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pf.c,v 1.104 2001/07/06 22:45:32 dhartmei Exp $ */ +/* $OpenBSD: pf.c,v 1.105 2001/07/06 23:01:30 dhartmei Exp $ */ /* * Copyright (c) 2001, Daniel Hartmeier @@ -1345,10 +1345,25 @@ pf_send_icmp(struct mbuf *m, u_int8_t type, u_int8_t code) icmp_error(m0, type, code, 0, 0); } +/* + * Return 1 if the addresses a and b match (with mask m), otherwise return 0. + * If n is 0, they match if they are equal. If n is != 0, they match if they + * are different. + */ int pf_match_addr(u_int8_t n, u_int32_t a, u_int32_t m, u_int32_t b) { - return (n == !((a & m) == (b & m))); + if (a & m == b & m) { + if (n) + return (0); + else + return (1); + } else { + if (n) + return (1); + else + return (0); + } } int |