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netlink: Fix getting route scope of interface's IPv4 addresses

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sin_addr of a `struct sockaddr_in` is stored in network byte order, but
IN_LOOPBACK() and IN_LINKLOCAL() want the host order.

Reviewed by:	melifaro, #network
Fixes:	7e5bf68495cc netlink: add netlink support
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D49226

(cherry picked from commit 0e096bb3fcaaf663df372aa4abb986e8d63c6e68)
This commit is contained in:
Zhenlei Huang 2025-03-07 12:14:44 +08:00 committed by Franco Fichtner
parent 2a564b0b65
commit 02a79c4a32
1 changed files with 2 additions and 2 deletions
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4
sys/netlink/route/iface.c
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@ -816,9 +816,9 @@ ifa_get_scope(const struct ifaddr *ifa)
{
struct in_addr addr;
addr = ((const struct sockaddr_in *)sa)->sin_addr;
if (IN_LOOPBACK(addr.s_addr))
if (IN_LOOPBACK(ntohl(addr.s_addr)))
addr_scope = RT_SCOPE_HOST;
else if (IN_LINKLOCAL(addr.s_addr))
else if (IN_LINKLOCAL(ntohl(addr.s_addr)))
addr_scope = RT_SCOPE_LINK;
break;
}