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routing: fix panic when adding an interface route to the p2p interface

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without and inet/inet6 addresses attached.

MFC after:      3 days
This commit is contained in:
Alexander V. Chernikov 2023-03-29 20:28:24 +00:00
parent cd137909c3
commit badcb3fd57
2 changed files with 40 additions and 1 deletions
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2
sys/net/if.c
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@ -2056,7 +2056,7 @@ ifaof_ifpforaddr(const struct sockaddr *addr, struct ifnet *ifp)
continue;
}
if (ifp->if_flags & IFF_POINTOPOINT) {
if (sa_equal(addr, ifa->ifa_dstaddr))
if (ifa->ifa_dstaddr && sa_equal(addr, ifa->ifa_dstaddr))
goto done;
} else {
cp = addr->sa_data;

39
tests/sys/net/routing/test_routing_l3.py
View File

@ -1,7 +1,13 @@
import ipaddress
import socket
import pytest
from atf_python.sys.net.rtsock import RtConst
from atf_python.sys.net.rtsock import Rtsock
from atf_python.sys.net.rtsock import RtsockRtMessage
from atf_python.sys.net.rtsock import SaHelper
from atf_python.sys.net.tools import ToolsHelper
from atf_python.sys.net.vnet import SingleVnetTestTemplate
from atf_python.sys.net.vnet import VnetTestTemplate
@ -79,3 +85,36 @@ def test_change_prefix_route_same_iface(self, family):
nhops = ToolsHelper.get_nhops(family)
nh = [nh for nh in nhops if nh["index"] == nhop_kidx][0]
assert nh["ifa"] == str(second_addr.ip)
class TestRouteCornerCase1(SingleVnetTestTemplate):
@pytest.mark.parametrize("family", ["inet", "inet6"])
@pytest.mark.require_user("root")
def test_add_direct_route_p2p_wo_ifa(self, family):
tun_ifname = ToolsHelper.get_output("/sbin/ifconfig tun create").rstrip()
tun_ifindex = socket.if_nametoindex(tun_ifname)
assert tun_ifindex > 0
rtsock = Rtsock()
if family == "inet":
prefix = "172.16.0.0/12"
else:
prefix = "2a02:6b8::/64"
IFT_ETHER = 0x06
gw_link = SaHelper.link_sa(ifindex=tun_ifindex, iftype=IFT_ETHER)
msg = rtsock.new_rtm_add(prefix, gw_link)
msg.add_link_attr(RtConst.RTA_IFP, tun_ifindex)
rtsock.write_message(msg)
data = rtsock.read_data(msg.rtm_seq)
msg_in = RtsockRtMessage.from_bytes(data)
msg_in.print_in_message()
desired_sa = {
RtConst.RTA_DST: msg.get_sa(RtConst.RTA_DST),
RtConst.RTA_NETMASK: msg.get_sa(RtConst.RTA_NETMASK),
}
msg_in.verify(msg.rtm_type, desired_sa)