diff options
| -rw-r--r-- | lib/ip.c | 3 | ||||
| -rw-r--r-- | lib/ipv4.h | 2 | ||||
| -rw-r--r-- | sysdep/linux/netlink/netlink.c | 2 | ||||
| -rw-r--r-- | sysdep/unix/krt-iface.c | 2 |
4 files changed, 5 insertions, 4 deletions
@@ -153,13 +153,14 @@ int ipa_classify(ip_addr x) { DUMMY } /** * ipa_opposite - return address of point-to-point neighbor * @x: IP address of our end of the link + * @pxlen: network prefix length * * ipa_opposite() returns an address of the opposite end of a numbered * point-to-point link. * * This function is available in IPv4 version only. */ -ip_addr ipa_opposite(ip_addr x) { DUMMY } +ip_addr ipa_opposite(ip_addr x, int pxlen) { DUMMY } /** * ipa_class_mask - guess netmask according to address class @@ -53,7 +53,7 @@ typedef u32 ip_addr; #define ipa_hton(x) x = _MI(htonl(_I(x))) #define ipa_ntoh(x) x = _MI(ntohl(_I(x))) #define ipa_classify(x) ipv4_classify(_I(x)) -#define ipa_opposite(x) _MI(_I(x) ^ 1) +#define ipa_opposite(x,len) _MI(_I(x) ^ (len == 30 ? 3 : 1)) #define ipa_class_mask(x) _MI(ipv4_class_mask(_I(x))) #define ipa_from_u32(x) _MI(x) #define ipa_to_u32(x) _I(x) diff --git a/sysdep/linux/netlink/netlink.c b/sysdep/linux/netlink/netlink.c index a54e115..a70428e 100644 --- a/sysdep/linux/netlink/netlink.c +++ b/sysdep/linux/netlink/netlink.c @@ -377,7 +377,7 @@ nl_parse_addr(struct nlmsghdr *h) ifa.brd = ipa_or(ifa.ip, ipa_not(netmask)); #ifndef IPV6 if (i->ifa_prefixlen == BITS_PER_IP_ADDRESS - 2) - ifa.opposite = ipa_opposite(ifa.ip); + ifa.opposite = ipa_opposite(ifa.ip, i->ifa_prefixlen); if ((ifi->flags & IF_BROADCAST) && a[IFA_BROADCAST]) { memcpy(&xbrd, RTA_DATA(a[IFA_BROADCAST]), sizeof(xbrd)); diff --git a/sysdep/unix/krt-iface.c b/sysdep/unix/krt-iface.c index 5cc7880..37f9d0b 100644 --- a/sysdep/unix/krt-iface.c +++ b/sysdep/unix/krt-iface.c @@ -140,7 +140,7 @@ scan_ifs(struct ifreq *r, int cnt) if (a.pxlen < 30) i.flags |= IF_MULTIACCESS; else - a.opposite = ipa_opposite(a.ip); + a.opposite = ipa_opposite(a.ip, a.pxlen); } else a.brd = a.opposite; |