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-rw-r--r--net/8021q/vlan.c87
-rw-r--r--net/8021q/vlan.h54
-rw-r--r--net/8021q/vlan_core.c10
-rw-r--r--net/8021q/vlan_dev.c7
-rw-r--r--net/8021q/vlan_gvrp.c4
-rw-r--r--net/8021q/vlan_mvrp.c4
-rw-r--r--net/8021q/vlan_netlink.c9
7 files changed, 98 insertions, 77 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 447c5c93434f..9424f3718ea7 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -51,14 +51,18 @@ const char vlan_version[] = DRV_VERSION;
/* End of global variables definitions. */
-static int vlan_group_prealloc_vid(struct vlan_group *vg, u16 vlan_id)
+static int vlan_group_prealloc_vid(struct vlan_group *vg,
+ __be16 vlan_proto, u16 vlan_id)
{
struct net_device **array;
+ unsigned int pidx, vidx;
unsigned int size;
ASSERT_RTNL();
- array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+ pidx = vlan_proto_idx(vlan_proto);
+ vidx = vlan_id / VLAN_GROUP_ARRAY_PART_LEN;
+ array = vg->vlan_devices_arrays[pidx][vidx];
if (array != NULL)
return 0;
@@ -67,7 +71,7 @@ static int vlan_group_prealloc_vid(struct vlan_group *vg, u16 vlan_id)
if (array == NULL)
return -ENOBUFS;
- vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN] = array;
+ vg->vlan_devices_arrays[pidx][vidx] = array;
return 0;
}
@@ -93,7 +97,7 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
if (vlan->flags & VLAN_FLAG_GVRP)
vlan_gvrp_request_leave(dev);
- vlan_group_set_device(grp, vlan_id, NULL);
+ vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, NULL);
/* Because unregister_netdevice_queue() makes sure at least one rcu
* grace period is respected before device freeing,
* we dont need to call synchronize_net() here.
@@ -112,13 +116,14 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
* VLAN is not 0 (leave it there for 802.1p).
*/
if (vlan_id)
- vlan_vid_del(real_dev, htons(ETH_P_8021Q), vlan_id);
+ vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
/* Get rid of the vlan's reference to real_dev */
dev_put(real_dev);
}
-int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
+int vlan_check_real_dev(struct net_device *real_dev,
+ __be16 protocol, u16 vlan_id)
{
const char *name = real_dev->name;
@@ -127,7 +132,7 @@ int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
return -EOPNOTSUPP;
}
- if (vlan_find_dev(real_dev, vlan_id) != NULL)
+ if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL)
return -EEXIST;
return 0;
@@ -142,7 +147,7 @@ int register_vlan_dev(struct net_device *dev)
struct vlan_group *grp;
int err;
- err = vlan_vid_add(real_dev, htons(ETH_P_8021Q), vlan_id);
+ err = vlan_vid_add(real_dev, vlan->vlan_proto, vlan_id);
if (err)
return err;
@@ -160,7 +165,7 @@ int register_vlan_dev(struct net_device *dev)
goto out_uninit_gvrp;
}
- err = vlan_group_prealloc_vid(grp, vlan_id);
+ err = vlan_group_prealloc_vid(grp, vlan->vlan_proto, vlan_id);
if (err < 0)
goto out_uninit_mvrp;
@@ -181,7 +186,7 @@ int register_vlan_dev(struct net_device *dev)
/* So, got the sucker initialized, now lets place
* it into our local structure.
*/
- vlan_group_set_device(grp, vlan_id, dev);
+ vlan_group_set_device(grp, vlan->vlan_proto, vlan_id, dev);
grp->nr_vlan_devs++;
return 0;
@@ -195,7 +200,7 @@ out_uninit_gvrp:
if (grp->nr_vlan_devs == 0)
vlan_gvrp_uninit_applicant(real_dev);
out_vid_del:
- vlan_vid_del(real_dev, htons(ETH_P_8021Q), vlan_id);
+ vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
return err;
}
@@ -213,7 +218,7 @@ 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, vlan_id);
+ err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id);
if (err < 0)
return err;
@@ -255,6 +260,7 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
new_dev->mtu = real_dev->mtu;
new_dev->priv_flags |= (real_dev->priv_flags & IFF_UNICAST_FLT);
+ vlan_dev_priv(new_dev)->vlan_proto = htons(ETH_P_8021Q);
vlan_dev_priv(new_dev)->vlan_id = vlan_id;
vlan_dev_priv(new_dev)->real_dev = real_dev;
vlan_dev_priv(new_dev)->dent = NULL;
@@ -341,6 +347,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
int i, flgs;
struct net_device *vlandev;
struct vlan_dev_priv *vlan;
+ bool last = false;
LIST_HEAD(list);
if (is_vlan_dev(dev))
@@ -365,22 +372,13 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
switch (event) {
case NETDEV_CHANGE:
/* Propagate real device state to vlan devices */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev)
netif_stacked_transfer_operstate(dev, vlandev);
- }
break;
case NETDEV_CHANGEADDR:
/* Adjust unicast filters on underlying device */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev) {
flgs = vlandev->flags;
if (!(flgs & IFF_UP))
continue;
@@ -390,11 +388,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
break;
case NETDEV_CHANGEMTU:
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev) {
if (vlandev->mtu <= dev->mtu)
continue;
@@ -404,14 +398,8 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_FEAT_CHANGE:
/* Propagate device features to underlying device */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev)
vlan_transfer_features(dev, vlandev);
- }
-
break;
case NETDEV_DOWN:
@@ -419,11 +407,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
vlan_vid_del(dev, htons(ETH_P_8021Q), 0);
/* Put all VLANs for this dev in the down state too. */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev) {
flgs = vlandev->flags;
if (!(flgs & IFF_UP))
continue;
@@ -437,11 +421,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_UP:
/* Put all VLANs for this dev in the up state too. */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev) {
flgs = vlandev->flags;
if (flgs & IFF_UP)
continue;
@@ -458,17 +438,15 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
if (dev->reg_state != NETREG_UNREGISTERING)
break;
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev) {
/* removal of last vid destroys vlan_info, abort
* afterwards */
if (vlan_info->nr_vids == 1)
- i = VLAN_N_VID;
+ last = true;
unregister_vlan_dev(vlandev, &list);
+ if (last)
+ break;
}
unregister_netdevice_many(&list);
break;
@@ -482,13 +460,8 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
case NETDEV_NOTIFY_PEERS:
case NETDEV_BONDING_FAILOVER:
/* Propagate to vlan devices */
- for (i = 0; i < VLAN_N_VID; i++) {
- vlandev = vlan_group_get_device(grp, i);
- if (!vlandev)
- continue;
-
+ vlan_group_for_each_dev(grp, i, vlandev)
call_netdevice_notifiers(event, vlandev);
- }
break;
}
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 670f1e8cfc0f..245de9653db0 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -49,6 +49,7 @@ struct netpoll;
* @ingress_priority_map: ingress priority mappings
* @nr_egress_mappings: number of egress priority mappings
* @egress_priority_map: hash of egress priority mappings
+ * @vlan_proto: VLAN encapsulation protocol
* @vlan_id: VLAN identifier
* @flags: device flags
* @real_dev: underlying netdevice
@@ -62,6 +63,7 @@ struct vlan_dev_priv {
unsigned int nr_egress_mappings;
struct vlan_priority_tci_mapping *egress_priority_map[16];
+ __be16 vlan_proto;
u16 vlan_id;
u16 flags;
@@ -87,10 +89,16 @@ static inline struct vlan_dev_priv *vlan_dev_priv(const struct net_device *dev)
#define VLAN_GROUP_ARRAY_SPLIT_PARTS 8
#define VLAN_GROUP_ARRAY_PART_LEN (VLAN_N_VID/VLAN_GROUP_ARRAY_SPLIT_PARTS)
+enum vlan_protos {
+ VLAN_PROTO_8021Q = 0,
+ VLAN_PROTO_NUM,
+};
+
struct vlan_group {
unsigned int nr_vlan_devs;
struct hlist_node hlist; /* linked list */
- struct net_device **vlan_devices_arrays[VLAN_GROUP_ARRAY_SPLIT_PARTS];
+ struct net_device **vlan_devices_arrays[VLAN_PROTO_NUM]
+ [VLAN_GROUP_ARRAY_SPLIT_PARTS];
};
struct vlan_info {
@@ -103,37 +111,64 @@ struct vlan_info {
struct rcu_head rcu;
};
-static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
- u16 vlan_id)
+static inline unsigned int vlan_proto_idx(__be16 proto)
+{
+ switch (proto) {
+ case __constant_htons(ETH_P_8021Q):
+ return VLAN_PROTO_8021Q;
+ default:
+ BUG();
+ }
+}
+
+static inline struct net_device *__vlan_group_get_device(struct vlan_group *vg,
+ unsigned int pidx,
+ u16 vlan_id)
{
struct net_device **array;
- array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+
+ array = vg->vlan_devices_arrays[pidx]
+ [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
}
+static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
+ __be16 vlan_proto,
+ u16 vlan_id)
+{
+ return __vlan_group_get_device(vg, vlan_proto_idx(vlan_proto), vlan_id);
+}
+
static inline void vlan_group_set_device(struct vlan_group *vg,
- u16 vlan_id,
+ __be16 vlan_proto, u16 vlan_id,
struct net_device *dev)
{
struct net_device **array;
if (!vg)
return;
- array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+ array = vg->vlan_devices_arrays[vlan_proto_idx(vlan_proto)]
+ [vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
}
/* Must be invoked with rcu_read_lock or with RTNL. */
static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
- u16 vlan_id)
+ __be16 vlan_proto, u16 vlan_id)
{
struct vlan_info *vlan_info = rcu_dereference_rtnl(real_dev->vlan_info);
if (vlan_info)
- return vlan_group_get_device(&vlan_info->grp, vlan_id);
+ return vlan_group_get_device(&vlan_info->grp,
+ vlan_proto, vlan_id);
return NULL;
}
+#define vlan_group_for_each_dev(grp, i, dev) \
+ for ((i) = 0; i < VLAN_PROTO_NUM * VLAN_N_VID; i++) \
+ if (((dev) = __vlan_group_get_device((grp), (i) / VLAN_N_VID, \
+ (i) % VLAN_N_VID)))
+
/* found in vlan_dev.c */
void vlan_dev_set_ingress_priority(const struct net_device *dev,
u32 skb_prio, u16 vlan_prio);
@@ -142,7 +177,8 @@ int vlan_dev_set_egress_priority(const struct net_device *dev,
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, u16 vlan_id);
+int vlan_check_real_dev(struct net_device *real_dev,
+ __be16 protocol, u16 vlan_id);
void vlan_setup(struct net_device *dev);
int register_vlan_dev(struct net_device *dev);
void unregister_vlan_dev(struct net_device *dev, struct list_head *head);
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 04e3b95a0d48..4e4c360353ea 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -12,7 +12,7 @@ bool vlan_do_receive(struct sk_buff **skbp)
struct net_device *vlan_dev;
struct vlan_pcpu_stats *rx_stats;
- vlan_dev = vlan_find_dev(skb->dev, vlan_id);
+ vlan_dev = vlan_find_dev(skb->dev, htons(ETH_P_8021Q), vlan_id);
if (!vlan_dev)
return false;
@@ -62,12 +62,13 @@ bool vlan_do_receive(struct sk_buff **skbp)
/* Must be invoked with rcu_read_lock. */
struct net_device *__vlan_find_dev_deep(struct net_device *dev,
- u16 vlan_id)
+ __be16 vlan_proto, u16 vlan_id)
{
struct vlan_info *vlan_info = rcu_dereference(dev->vlan_info);
if (vlan_info) {
- return vlan_group_get_device(&vlan_info->grp, vlan_id);
+ return vlan_group_get_device(&vlan_info->grp,
+ vlan_proto, vlan_id);
} else {
/*
* Lower devices of master uppers (bonding, team) do not have
@@ -78,7 +79,8 @@ struct net_device *__vlan_find_dev_deep(struct net_device *dev,
upper_dev = netdev_master_upper_dev_get_rcu(dev);
if (upper_dev)
- return __vlan_find_dev_deep(upper_dev, vlan_id);
+ return __vlan_find_dev_deep(upper_dev,
+ vlan_proto, vlan_id);
}
return NULL;
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 5c4892a86410..d7457b7e1b95 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -99,6 +99,7 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
const void *daddr, const void *saddr,
unsigned int len)
{
+ struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
struct vlan_hdr *vhdr;
unsigned int vhdrlen = 0;
u16 vlan_tci = 0;
@@ -120,8 +121,8 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
else
vhdr->h_vlan_encapsulated_proto = htons(len);
- skb->protocol = htons(ETH_P_8021Q);
- type = ETH_P_8021Q;
+ skb->protocol = vlan->vlan_proto;
+ type = ntohs(vlan->vlan_proto);
vhdrlen = VLAN_HLEN;
}
@@ -161,7 +162,7 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
* NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
* OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
*/
- if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
+ if (veth->h_vlan_proto != vlan->vlan_proto ||
vlan->flags & VLAN_FLAG_REORDER_HDR) {
u16 vlan_tci;
vlan_tci = vlan->vlan_id;
diff --git a/net/8021q/vlan_gvrp.c b/net/8021q/vlan_gvrp.c
index 6f9755352760..66a80320b032 100644
--- a/net/8021q/vlan_gvrp.c
+++ b/net/8021q/vlan_gvrp.c
@@ -32,6 +32,8 @@ int vlan_gvrp_request_join(const struct net_device *dev)
const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
__be16 vlan_id = htons(vlan->vlan_id);
+ if (vlan->vlan_proto != htons(ETH_P_8021Q))
+ return 0;
return garp_request_join(vlan->real_dev, &vlan_gvrp_app,
&vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
}
@@ -41,6 +43,8 @@ void vlan_gvrp_request_leave(const struct net_device *dev)
const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
__be16 vlan_id = htons(vlan->vlan_id);
+ if (vlan->vlan_proto != htons(ETH_P_8021Q))
+ return;
garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
&vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
}
diff --git a/net/8021q/vlan_mvrp.c b/net/8021q/vlan_mvrp.c
index d9ec1d5964aa..e0fe091801b0 100644
--- a/net/8021q/vlan_mvrp.c
+++ b/net/8021q/vlan_mvrp.c
@@ -38,6 +38,8 @@ int vlan_mvrp_request_join(const struct net_device *dev)
const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
__be16 vlan_id = htons(vlan->vlan_id);
+ if (vlan->vlan_proto != htons(ETH_P_8021Q))
+ return 0;
return mrp_request_join(vlan->real_dev, &vlan_mrp_app,
&vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
}
@@ -47,6 +49,8 @@ void vlan_mvrp_request_leave(const struct net_device *dev)
const struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
__be16 vlan_id = htons(vlan->vlan_id);
+ if (vlan->vlan_proto != htons(ETH_P_8021Q))
+ return;
mrp_request_leave(vlan->real_dev, &vlan_mrp_app,
&vlan_id, sizeof(vlan_id), MVRP_ATTR_VID);
}
diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c
index 1789658b7cd7..a1a956ab39a5 100644
--- a/net/8021q/vlan_netlink.c
+++ b/net/8021q/vlan_netlink.c
@@ -118,11 +118,12 @@ static int vlan_newlink(struct net *src_net, struct net_device *dev,
if (!real_dev)
return -ENODEV;
- vlan->vlan_id = nla_get_u16(data[IFLA_VLAN_ID]);
- vlan->real_dev = real_dev;
- vlan->flags = VLAN_FLAG_REORDER_HDR;
+ vlan->vlan_proto = htons(ETH_P_8021Q);
+ vlan->vlan_id = nla_get_u16(data[IFLA_VLAN_ID]);
+ vlan->real_dev = real_dev;
+ vlan->flags = VLAN_FLAG_REORDER_HDR;
- err = vlan_check_real_dev(real_dev, vlan->vlan_id);
+ err = vlan_check_real_dev(real_dev, vlan->vlan_proto, vlan->vlan_id);
if (err < 0)
return err;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.