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bridge: vlan: skip unknown attributes when printing options 

Skip unknown attributes when printing vlan options in print_vlan_rtm.
Make sure print_vlan_opts doesn't accept attributes it doesn't understand.
Currently we print only one type, later global vlan options support will
be added.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
This commit is contained in:
Nikolay Aleksandrov 2021-08-28 14:07:49 +03:00 committed by David Ahern
parent 312e22fe79
commit d3a961a9b1
1 changed files with 14 additions and 1 deletions
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15
bridge/vlan.c
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@ -629,6 +629,9 @@ static void print_vlan_opts(struct rtattr *a)
__u16 vrange = 0;
__u8 state = 0;
if ((a->rta_type & NLA_TYPE_MASK) != BRIDGE_VLANDB_ENTRY)
return;
parse_rtattr_flags(vtb, BRIDGE_VLANDB_ENTRY_MAX, RTA_DATA(a),
RTA_PAYLOAD(a), NLA_F_NESTED);
vinfo = RTA_DATA(vtb[BRIDGE_VLANDB_ENTRY_INFO]);
@ -716,6 +719,12 @@ int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor)
rem = len;
for (a = BRVLAN_RTA(bvm); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) {
unsigned short rta_type = a->rta_type & NLA_TYPE_MASK;
/* skip unknown attributes */
if (rta_type > BRIDGE_VLANDB_MAX)
continue;
if (vlan_rtm_cur_ifidx != bvm->ifindex) {
open_vlan_port(bvm->ifindex, VLAN_SHOW_VLAN);
open_json_object(NULL);
@ -724,7 +733,11 @@ int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor)
open_json_object(NULL);
print_string(PRINT_FP, NULL, "%-" __stringify(IFNAMSIZ) "s ", "");
}
print_vlan_opts(a);
switch (rta_type) {
case BRIDGE_VLANDB_ENTRY:
print_vlan_opts(a);
break;
}
close_json_object();
}