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kernel-netlink: Use RTA_SRC to specify route source in kernel-based lookups

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For table dumps the kernel accepts RTA_PREFSRC to filter the routes, which is
what we do when doing userspace route calculations. For kernel-based route
lookups, however, the RTA_PREFSRC attribute is ignored and we must specify
RTA_SRC for policy based route lookups.
This commit is contained in:
Martin Willi 2017-01-19 11:23:45 +01:00
parent 558691b3b0
commit 395500b8c1
1 changed files with 8 additions and 1 deletions
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9
src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c
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@ -1883,7 +1883,14 @@ static host_t *get_route(private_kernel_netlink_net_t *this, host_t *dest,
if (candidate) if (candidate)
{ {
chunk = candidate->get_address(candidate); chunk = candidate->get_address(candidate);
netlink_add_attribute(hdr, RTA_PREFSRC, chunk, sizeof(request)); if (hdr->nlmsg_flags & NLM_F_DUMP)
{
netlink_add_attribute(hdr, RTA_PREFSRC, chunk, sizeof(request));
}
else
{
netlink_add_attribute(hdr, RTA_SRC, chunk, sizeof(request));
}
} }
/* we use this below to match against the routes */ /* we use this below to match against the routes */
chunk = dest->get_address(dest); chunk = dest->get_address(dest);