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Diffstat (limited to 'net/8021q/vlan_netlink.c')
-rw-r--r--net/8021q/vlan_netlink.c45
1 files changed, 34 insertions, 11 deletions
diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c
index 6689c0b272a7..9b60c1e399e2 100644
--- a/net/8021q/vlan_netlink.c
+++ b/net/8021q/vlan_netlink.c
@@ -47,14 +47,20 @@ static int vlan_validate(struct nlattr *tb[], struct nlattr *data[],
int err;
if (tb[IFLA_ADDRESS]) {
- if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
+ if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid link address");
return -EINVAL;
- if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
+ }
+ if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid link address");
return -EADDRNOTAVAIL;
+ }
}
- if (!data)
+ if (!data) {
+ NL_SET_ERR_MSG_MOD(extack, "VLAN properties not specified");
return -EINVAL;
+ }
if (data[IFLA_VLAN_PROTOCOL]) {
switch (nla_get_be16(data[IFLA_VLAN_PROTOCOL])) {
@@ -62,29 +68,38 @@ static int vlan_validate(struct nlattr *tb[], struct nlattr *data[],
case htons(ETH_P_8021AD):
break;
default:
+ NL_SET_ERR_MSG_MOD(extack, "Invalid VLAN protocol");
return -EPROTONOSUPPORT;
}
}
if (data[IFLA_VLAN_ID]) {
id = nla_get_u16(data[IFLA_VLAN_ID]);
- if (id >= VLAN_VID_MASK)
+ if (id >= VLAN_VID_MASK) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid VLAN id");
return -ERANGE;
+ }
}
if (data[IFLA_VLAN_FLAGS]) {
flags = nla_data(data[IFLA_VLAN_FLAGS]);
if ((flags->flags & flags->mask) &
~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP |
- VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP))
+ VLAN_FLAG_LOOSE_BINDING | VLAN_FLAG_MVRP)) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid VLAN flags");
return -EINVAL;
+ }
}
err = vlan_validate_qos_map(data[IFLA_VLAN_INGRESS_QOS]);
- if (err < 0)
+ if (err < 0) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid ingress QOS map");
return err;
+ }
err = vlan_validate_qos_map(data[IFLA_VLAN_EGRESS_QOS]);
- if (err < 0)
+ if (err < 0) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid egress QOS map");
return err;
+ }
return 0;
}
@@ -126,14 +141,21 @@ static int vlan_newlink(struct net *src_net, struct net_device *dev,
__be16 proto;
int err;
- if (!data[IFLA_VLAN_ID])
+ if (!data[IFLA_VLAN_ID]) {
+ NL_SET_ERR_MSG_MOD(extack, "VLAN id not specified");
return -EINVAL;
+ }
- if (!tb[IFLA_LINK])
+ if (!tb[IFLA_LINK]) {
+ NL_SET_ERR_MSG_MOD(extack, "link not specified");
return -EINVAL;
+ }
+
real_dev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));
- if (!real_dev)
+ if (!real_dev) {
+ NL_SET_ERR_MSG_MOD(extack, "link does not exist");
return -ENODEV;
+ }
if (data[IFLA_VLAN_PROTOCOL])
proto = nla_get_be16(data[IFLA_VLAN_PROTOCOL]);
@@ -146,7 +168,8 @@ static int vlan_newlink(struct net *src_net, struct net_device *dev,
dev->priv_flags |= (real_dev->priv_flags & IFF_XMIT_DST_RELEASE);
vlan->flags = VLAN_FLAG_REORDER_HDR;
- err = vlan_check_real_dev(real_dev, vlan->vlan_proto, vlan->vlan_id);
+ err = vlan_check_real_dev(real_dev, vlan->vlan_proto, vlan->vlan_id,
+ extack);
if (err < 0)
return err;