diff options
| -rw-r--r-- | net/8021q/vlan.c | 11 | ||||
| -rw-r--r-- | net/8021q/vlan.h | 3 | ||||
| -rw-r--r-- | net/8021q/vlan_netlink.c | 45 |
3 files changed, 44 insertions, 15 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 5505ee6ebdbe..73a65789271b 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -118,17 +118,21 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head) } int vlan_check_real_dev(struct net_device *real_dev, - __be16 protocol, u16 vlan_id) + __be16 protocol, u16 vlan_id, + struct netlink_ext_ack *extack) { const char *name = real_dev->name; if (real_dev->features & NETIF_F_VLAN_CHALLENGED) { pr_info("VLANs not supported on %s\n", name); + NL_SET_ERR_MSG_MOD(extack, "VLANs not supported on device"); return -EOPNOTSUPP; } - if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL) + if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL) { + NL_SET_ERR_MSG_MOD(extack, "VLAN device already exists"); return -EEXIST; + } return 0; } @@ -215,7 +219,8 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id) if (vlan_id >= VLAN_VID_MASK) return -ERANGE; - err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id); + err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id, + NULL); if (err < 0) return err; diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h index e23aac3e4d37..44df1c3df02d 100644 --- a/net/8021q/vlan.h +++ b/net/8021q/vlan.h @@ -109,7 +109,8 @@ int vlan_dev_change_flags(const struct net_device *dev, u32 flag, u32 mask); void vlan_dev_get_realdev_name(const struct net_device *dev, char *result); int vlan_check_real_dev(struct net_device *real_dev, - __be16 protocol, u16 vlan_id); + __be16 protocol, u16 vlan_id, + struct netlink_ext_ack *extack); void vlan_setup(struct net_device *dev); int register_vlan_dev(struct net_device *dev, struct netlink_ext_ack *extack); void unregister_vlan_dev(struct net_device *dev, struct list_head *head); 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; |