aboutsummaryrefslogtreecommitdiff
path: root/net/8021q
diff options
context:
space:
mode:
Diffstat (limited to 'net/8021q')
-rw-r--r--net/8021q/Kconfig10
-rw-r--r--net/8021q/Makefile12
-rw-r--r--net/8021q/vlan.c74
-rw-r--r--net/8021q/vlan.h86
-rw-r--r--net/8021q/vlan_core.c60
-rw-r--r--net/8021q/vlan_dev.c139
-rw-r--r--net/8021q/vlan_gvrp.c66
-rw-r--r--net/8021q/vlan_netlink.c7
-rw-r--r--net/8021q/vlanproc.c2
9 files changed, 334 insertions, 122 deletions
diff --git a/net/8021q/Kconfig b/net/8021q/Kconfig
index c4a382e450e..fa073a54963 100644
--- a/net/8021q/Kconfig
+++ b/net/8021q/Kconfig
@@ -17,3 +17,13 @@ config VLAN_8021Q
will be called 8021q.
If unsure, say N.
+
+config VLAN_8021Q_GVRP
+ bool "GVRP (GARP VLAN Registration Protocol) support"
+ depends on VLAN_8021Q
+ select GARP
+ help
+ Select this to enable GVRP end-system support. GVRP is used for
+ automatic propagation of registered VLANs to switches.
+
+ If unsure, say N.
diff --git a/net/8021q/Makefile b/net/8021q/Makefile
index 10ca7f486c3..9f4f174ead1 100644
--- a/net/8021q/Makefile
+++ b/net/8021q/Makefile
@@ -1,12 +1,10 @@
#
# Makefile for the Linux VLAN layer.
#
+obj-$(subst m,y,$(CONFIG_VLAN_8021Q)) += vlan_core.o
+obj-$(CONFIG_VLAN_8021Q) += 8021q.o
-obj-$(CONFIG_VLAN_8021Q) += 8021q.o
-
-8021q-objs := vlan.o vlan_dev.o vlan_netlink.o
-
-ifeq ($(CONFIG_PROC_FS),y)
-8021q-objs += vlanproc.o
-endif
+8021q-y := vlan.o vlan_dev.o vlan_netlink.o
+8021q-$(CONFIG_VLAN_8021Q_GVRP) += vlan_gvrp.o
+8021q-$(CONFIG_PROC_FS) += vlanproc.o
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index ab2225da0ee..68bdcf4a795 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -83,13 +83,12 @@ static struct vlan_group *__vlan_find_group(struct net_device *real_dev)
*
* Must be invoked with RCU read lock (no preempt)
*/
-struct net_device *__find_vlan_dev(struct net_device *real_dev,
- unsigned short VID)
+struct net_device *__find_vlan_dev(struct net_device *real_dev, u16 vlan_id)
{
struct vlan_group *grp = __vlan_find_group(real_dev);
if (grp)
- return vlan_group_get_device(grp, VID);
+ return vlan_group_get_device(grp, vlan_id);
return NULL;
}
@@ -117,14 +116,14 @@ static struct vlan_group *vlan_group_alloc(struct net_device *real_dev)
return grp;
}
-static int vlan_group_prealloc_vid(struct vlan_group *vg, int vid)
+static int vlan_group_prealloc_vid(struct vlan_group *vg, u16 vlan_id)
{
struct net_device **array;
unsigned int size;
ASSERT_RTNL();
- array = vg->vlan_devices_arrays[vid / VLAN_GROUP_ARRAY_PART_LEN];
+ array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
if (array != NULL)
return 0;
@@ -133,7 +132,7 @@ static int vlan_group_prealloc_vid(struct vlan_group *vg, int vid)
if (array == NULL)
return -ENOBUFS;
- vg->vlan_devices_arrays[vid / VLAN_GROUP_ARRAY_PART_LEN] = array;
+ vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN] = array;
return 0;
}
@@ -147,7 +146,7 @@ void unregister_vlan_dev(struct net_device *dev)
struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
struct vlan_group *grp;
- unsigned short vlan_id = vlan->vlan_id;
+ u16 vlan_id = vlan->vlan_id;
ASSERT_RTNL();
@@ -165,8 +164,12 @@ void unregister_vlan_dev(struct net_device *dev)
synchronize_net();
+ unregister_netdevice(dev);
+
/* If the group is now empty, kill off the group. */
if (grp->nr_vlans == 0) {
+ vlan_gvrp_uninit_applicant(real_dev);
+
if (real_dev->features & NETIF_F_HW_VLAN_RX)
real_dev->vlan_rx_register(real_dev, NULL);
@@ -178,8 +181,6 @@ void unregister_vlan_dev(struct net_device *dev)
/* Get rid of the vlan's reference to real_dev */
dev_put(real_dev);
-
- unregister_netdevice(dev);
}
static void vlan_transfer_operstate(const struct net_device *dev,
@@ -203,7 +204,7 @@ static void vlan_transfer_operstate(const struct net_device *dev,
}
}
-int vlan_check_real_dev(struct net_device *real_dev, unsigned short vlan_id)
+int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
{
char *name = real_dev->name;
@@ -240,7 +241,7 @@ int register_vlan_dev(struct net_device *dev)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct net_device *real_dev = vlan->real_dev;
- unsigned short vlan_id = vlan->vlan_id;
+ u16 vlan_id = vlan->vlan_id;
struct vlan_group *grp, *ngrp = NULL;
int err;
@@ -249,15 +250,18 @@ int register_vlan_dev(struct net_device *dev)
ngrp = grp = vlan_group_alloc(real_dev);
if (!grp)
return -ENOBUFS;
+ err = vlan_gvrp_init_applicant(real_dev);
+ if (err < 0)
+ goto out_free_group;
}
err = vlan_group_prealloc_vid(grp, vlan_id);
if (err < 0)
- goto out_free_group;
+ goto out_uninit_applicant;
err = register_netdevice(dev);
if (err < 0)
- goto out_free_group;
+ goto out_uninit_applicant;
/* Account for reference in struct vlan_dev_info */
dev_hold(real_dev);
@@ -278,6 +282,9 @@ int register_vlan_dev(struct net_device *dev)
return 0;
+out_uninit_applicant:
+ if (ngrp)
+ vlan_gvrp_uninit_applicant(real_dev);
out_free_group:
if (ngrp)
vlan_group_free(ngrp);
@@ -287,8 +294,7 @@ out_free_group:
/* Attach a VLAN device to a mac address (ie Ethernet Card).
* Returns 0 if the device was created or a negative error code otherwise.
*/
-static int register_vlan_device(struct net_device *real_dev,
- unsigned short VLAN_ID)
+static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
{
struct net_device *new_dev;
struct net *net = dev_net(real_dev);
@@ -296,10 +302,10 @@ static int register_vlan_device(struct net_device *real_dev,
char name[IFNAMSIZ];
int err;
- if (VLAN_ID >= VLAN_VID_MASK)
+ if (vlan_id >= VLAN_VID_MASK)
return -ERANGE;
- err = vlan_check_real_dev(real_dev, VLAN_ID);
+ err = vlan_check_real_dev(real_dev, vlan_id);
if (err < 0)
return err;
@@ -307,26 +313,26 @@ static int register_vlan_device(struct net_device *real_dev,
switch (vn->name_type) {
case VLAN_NAME_TYPE_RAW_PLUS_VID:
/* name will look like: eth1.0005 */
- snprintf(name, IFNAMSIZ, "%s.%.4i", real_dev->name, VLAN_ID);
+ snprintf(name, IFNAMSIZ, "%s.%.4i", real_dev->name, vlan_id);
break;
case VLAN_NAME_TYPE_PLUS_VID_NO_PAD:
/* Put our vlan.VID in the name.
* Name will look like: vlan5
*/
- snprintf(name, IFNAMSIZ, "vlan%i", VLAN_ID);
+ snprintf(name, IFNAMSIZ, "vlan%i", vlan_id);
break;
case VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD:
/* Put our vlan.VID in the name.
* Name will look like: eth0.5
*/
- snprintf(name, IFNAMSIZ, "%s.%i", real_dev->name, VLAN_ID);
+ snprintf(name, IFNAMSIZ, "%s.%i", real_dev->name, vlan_id);
break;
case VLAN_NAME_TYPE_PLUS_VID:
/* Put our vlan.VID in the name.
* Name will look like: vlan0005
*/
default:
- snprintf(name, IFNAMSIZ, "vlan%.4i", VLAN_ID);
+ snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id);
}
new_dev = alloc_netdev(sizeof(struct vlan_dev_info), name,
@@ -341,7 +347,7 @@ static int register_vlan_device(struct net_device *real_dev,
*/
new_dev->mtu = real_dev->mtu;
- vlan_dev_info(new_dev)->vlan_id = VLAN_ID; /* 1 through VLAN_VID_MASK */
+ vlan_dev_info(new_dev)->vlan_id = vlan_id;
vlan_dev_info(new_dev)->real_dev = real_dev;
vlan_dev_info(new_dev)->dent = NULL;
vlan_dev_info(new_dev)->flags = VLAN_FLAG_REORDER_HDR;
@@ -535,7 +541,6 @@ static struct notifier_block vlan_notifier_block __read_mostly = {
static int vlan_ioctl_handler(struct net *net, void __user *arg)
{
int err;
- unsigned short vid = 0;
struct vlan_ioctl_args args;
struct net_device *dev = NULL;
@@ -562,8 +567,7 @@ static int vlan_ioctl_handler(struct net *net, void __user *arg)
goto out;
err = -EINVAL;
- if (args.cmd != ADD_VLAN_CMD &&
- !(dev->priv_flags & IFF_802_1Q_VLAN))
+ if (args.cmd != ADD_VLAN_CMD && !is_vlan_dev(dev))
goto out;
}
@@ -591,9 +595,9 @@ static int vlan_ioctl_handler(struct net *net, void __user *arg)
err = -EPERM;
if (!capable(CAP_NET_ADMIN))
break;
- err = vlan_dev_set_vlan_flag(dev,
- args.u.flag,
- args.vlan_qos);
+ err = vlan_dev_change_flags(dev,
+ args.vlan_qos ? args.u.flag : 0,
+ args.u.flag);
break;
case SET_VLAN_NAME_TYPE_CMD:
@@ -637,8 +641,7 @@ static int vlan_ioctl_handler(struct net *net, void __user *arg)
case GET_VLAN_VID_CMD:
err = 0;
- vlan_dev_get_vid(dev, &vid);
- args.u.VID = vid;
+ args.u.VID = vlan_dev_vlan_id(dev);
if (copy_to_user(arg, &args,
sizeof(struct vlan_ioctl_args)))
err = -EFAULT;
@@ -713,14 +716,20 @@ static int __init vlan_proto_init(void)
if (err < 0)
goto err2;
- err = vlan_netlink_init();
+ err = vlan_gvrp_init();
if (err < 0)
goto err3;
+ err = vlan_netlink_init();
+ if (err < 0)
+ goto err4;
+
dev_add_pack(&vlan_packet_type);
vlan_ioctl_set(vlan_ioctl_handler);
return 0;
+err4:
+ vlan_gvrp_uninit();
err3:
unregister_netdevice_notifier(&vlan_notifier_block);
err2:
@@ -745,8 +754,9 @@ static void __exit vlan_cleanup_module(void)
BUG_ON(!hlist_empty(&vlan_group_hash[i]));
unregister_pernet_gen_device(vlan_net_id, &vlan_net_ops);
-
synchronize_net();
+
+ vlan_gvrp_uninit();
}
module_init(vlan_proto_init);
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 5229a72c7ea..a6603a4d917 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -3,6 +3,55 @@
#include <linux/if_vlan.h>
+
+/**
+ * struct vlan_priority_tci_mapping - vlan egress priority mappings
+ * @priority: skb priority
+ * @vlan_qos: vlan priority: (skb->priority << 13) & 0xE000
+ * @next: pointer to next struct
+ */
+struct vlan_priority_tci_mapping {
+ u32 priority;
+ u16 vlan_qos;
+ struct vlan_priority_tci_mapping *next;
+};
+
+/**
+ * struct vlan_dev_info - VLAN private device data
+ * @nr_ingress_mappings: number of ingress priority mappings
+ * @ingress_priority_map: ingress priority mappings
+ * @nr_egress_mappings: number of egress priority mappings
+ * @egress_priority_map: hash of egress priority mappings
+ * @vlan_id: VLAN identifier
+ * @flags: device flags
+ * @real_dev: underlying netdevice
+ * @real_dev_addr: address of underlying netdevice
+ * @dent: proc dir entry
+ * @cnt_inc_headroom_on_tx: statistic - number of skb expansions on TX
+ * @cnt_encap_on_xmit: statistic - number of skb encapsulations on TX
+ */
+struct vlan_dev_info {
+ unsigned int nr_ingress_mappings;
+ u32 ingress_priority_map[8];
+ unsigned int nr_egress_mappings;
+ struct vlan_priority_tci_mapping *egress_priority_map[16];
+
+ u16 vlan_id;
+ u16 flags;
+
+ struct net_device *real_dev;
+ unsigned char real_dev_addr[ETH_ALEN];
+
+ struct proc_dir_entry *dent;
+ unsigned long cnt_inc_headroom_on_tx;
+ unsigned long cnt_encap_on_xmit;
+};
+
+static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
+{
+ return netdev_priv(dev);
+}
+
#define VLAN_GRP_HASH_SHIFT 5
#define VLAN_GRP_HASH_SIZE (1 << VLAN_GRP_HASH_SHIFT)
#define VLAN_GRP_HASH_MASK (VLAN_GRP_HASH_SIZE - 1)
@@ -18,26 +67,47 @@
* Must be invoked with rcu_read_lock (ie preempt disabled)
* or with RTNL.
*/
-struct net_device *__find_vlan_dev(struct net_device *real_dev,
- unsigned short VID); /* vlan.c */
+struct net_device *__find_vlan_dev(struct net_device *real_dev, u16 vlan_id);
/* found in vlan_dev.c */
int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *ptype, struct net_device *orig_dev);
void vlan_dev_set_ingress_priority(const struct net_device *dev,
- u32 skb_prio, short vlan_prio);
+ u32 skb_prio, u16 vlan_prio);
int vlan_dev_set_egress_priority(const struct net_device *dev,
- u32 skb_prio, short vlan_prio);
-int vlan_dev_set_vlan_flag(const struct net_device *dev,
- u32 flag, short flag_val);
+ u32 skb_prio, u16 vlan_prio);
+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);
-void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result);
-int vlan_check_real_dev(struct net_device *real_dev, unsigned short vlan_id);
+int vlan_check_real_dev(struct net_device *real_dev, 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);
+static inline u32 vlan_get_ingress_priority(struct net_device *dev,
+ u16 vlan_tci)
+{
+ struct vlan_dev_info *vip = vlan_dev_info(dev);
+
+ return vip->ingress_priority_map[(vlan_tci >> 13) & 0x7];
+}
+
+#ifdef CONFIG_VLAN_8021Q_GVRP
+extern int vlan_gvrp_request_join(const struct net_device *dev);
+extern void vlan_gvrp_request_leave(const struct net_device *dev);
+extern int vlan_gvrp_init_applicant(struct net_device *dev);
+extern void vlan_gvrp_uninit_applicant(struct net_device *dev);
+extern int vlan_gvrp_init(void);
+extern void vlan_gvrp_uninit(void);
+#else
+static inline int vlan_gvrp_request_join(const struct net_device *dev) { return 0; }
+static inline void vlan_gvrp_request_leave(const struct net_device *dev) {}
+static inline int vlan_gvrp_init_applicant(struct net_device *dev) { return 0; }
+static inline void vlan_gvrp_uninit_applicant(struct net_device *dev) {}
+static inline int vlan_gvrp_init(void) { return 0; }
+static inline void vlan_gvrp_uninit(void) {}
+#endif
+
int vlan_netlink_init(void);
void vlan_netlink_fini(void);
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
new file mode 100644
index 00000000000..68df12d3664
--- /dev/null
+++ b/net/8021q/vlan_core.c
@@ -0,0 +1,60 @@
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/if_vlan.h>
+#include "vlan.h"
+
+/* VLAN rx hw acceleration helper. This acts like netif_{rx,receive_skb}(). */
+int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
+ u16 vlan_tci, int polling)
+{
+ struct net_device_stats *stats;
+
+ if (skb_bond_should_drop(skb)) {
+ dev_kfree_skb_any(skb);
+ return NET_RX_DROP;
+ }
+
+ skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK);
+ if (skb->dev == NULL) {
+ dev_kfree_skb_any(skb);
+ /* Not NET_RX_DROP, this is not being dropped
+ * due to congestion. */
+ return NET_RX_SUCCESS;
+ }
+ skb->dev->last_rx = jiffies;
+
+ stats = &skb->dev->stats;
+ stats->rx_packets++;
+ stats->rx_bytes += skb->len;
+
+ skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci);
+ switch (skb->pkt_type) {
+ case PACKET_BROADCAST:
+ break;
+ case PACKET_MULTICAST:
+ stats->multicast++;
+ break;
+ case PACKET_OTHERHOST:
+ /* Our lower layer thinks this is not local, let's make sure.
+ * This allows the VLAN to have a different MAC than the
+ * underlying device, and still route correctly. */
+ if (!compare_ether_addr(eth_hdr(skb)->h_dest,
+ skb->dev->dev_addr))
+ skb->pkt_type = PACKET_HOST;
+ break;
+ };
+ return (polling ? netif_receive_skb(skb) : netif_rx(skb));
+}
+EXPORT_SYMBOL(__vlan_hwaccel_rx);
+
+struct net_device *vlan_dev_real_dev(const struct net_device *dev)
+{
+ return vlan_dev_info(dev)->real_dev;
+}
+EXPORT_SYMBOL_GPL(vlan_dev_real_dev);
+
+u16 vlan_dev_vlan_id(const struct net_device *dev)
+{
+ return vlan_dev_info(dev)->vlan_id;
+}
+EXPORT_SYMBOL_GPL(vlan_dev_vlan_id);
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 5d055c242ed..b6e52c025fd 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -28,6 +28,7 @@
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
#include <net/datalink.h>
#include <net/p8022.h>
#include <net/arp.h>
@@ -73,11 +74,8 @@ static int vlan_dev_rebuild_header(struct sk_buff *skb)
static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb)
{
if (vlan_dev_info(skb->dev)->flags & VLAN_FLAG_REORDER_HDR) {
- if (skb_shared(skb) || skb_cloned(skb)) {
- struct sk_buff *nskb = skb_copy(skb, GFP_ATOMIC);
- kfree_skb(skb);
- skb = nskb;
- }
+ if (skb_cow(skb, skb_headroom(skb)) < 0)
+ skb = NULL;
if (skb) {
/* Lifted from Gleb's VLAN code... */
memmove(skb->data - ETH_HLEN,
@@ -149,9 +147,9 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *ptype, struct net_device *orig_dev)
{
struct vlan_hdr *vhdr;
- unsigned short vid;
struct net_device_stats *stats;
- unsigned short vlan_TCI;
+ u16 vlan_id;
+ u16 vlan_tci;
skb = skb_share_check(skb, GFP_ATOMIC);
if (skb == NULL)
@@ -161,14 +159,14 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
goto err_free;
vhdr = (struct vlan_hdr *)skb->data;
- vlan_TCI = ntohs(vhdr->h_vlan_TCI);
- vid = (vlan_TCI & VLAN_VID_MASK);
+ vlan_tci = ntohs(vhdr->h_vlan_TCI);
+ vlan_id = vlan_tci & VLAN_VID_MASK;
rcu_read_lock();
- skb->dev = __find_vlan_dev(dev, vid);
+ skb->dev = __find_vlan_dev(dev, vlan_id);
if (!skb->dev) {
pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n",
- __func__, (unsigned int)vid, dev->name);
+ __func__, vlan_id, dev->name);
goto err_unlock;
}
@@ -180,11 +178,10 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
skb_pull_rcsum(skb, VLAN_HLEN);
- skb->priority = vlan_get_ingress_priority(skb->dev,
- ntohs(vhdr->h_vlan_TCI));
+ skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci);
pr_debug("%s: priority: %u for TCI: %hu\n",
- __func__, skb->priority, ntohs(vhdr->h_vlan_TCI));
+ __func__, skb->priority, vlan_tci);
switch (skb->pkt_type) {
case PACKET_BROADCAST: /* Yeah, stats collect these together.. */
@@ -227,7 +224,7 @@ err_free:
return NET_RX_DROP;
}
-static inline unsigned short
+static inline u16
vlan_dev_get_egress_qos_mask(struct net_device *dev, struct sk_buff *skb)
{
struct vlan_priority_tci_mapping *mp;
@@ -259,15 +256,17 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
unsigned int len)
{
struct vlan_hdr *vhdr;
- unsigned short veth_TCI = 0;
+ u16 vlan_tci = 0;
int rc = 0;
int build_vlan_header = 0;
- struct net_device *vdev = dev;
pr_debug("%s: skb: %p type: %hx len: %u vlan_id: %hx, daddr: %p\n",
__func__, skb, type, len, vlan_dev_info(dev)->vlan_id,
daddr);
+ if (WARN_ON(skb_headroom(skb) < dev->hard_header_len))
+ return -ENOSPC;
+
/* build vlan header only if re_order_header flag is NOT set. This
* fixes some programs that get confused when they see a VLAN device
* sending a frame that is VLAN encoded (the consensus is that the VLAN
@@ -291,10 +290,10 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
* VLAN ID 12 bits (low bits)
*
*/
- veth_TCI = vlan_dev_info(dev)->vlan_id;
- veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb);
+ vlan_tci = vlan_dev_info(dev)->vlan_id;
+ vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
- vhdr->h_vlan_TCI = htons(veth_TCI);
+ vhdr->h_vlan_TCI = htons(vlan_tci);
/*
* Set the protocol type. For a packet of type ETH_P_802_3 we
@@ -308,7 +307,6 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
vhdr->h_vlan_encapsulated_proto = htons(len);
skb->protocol = htons(ETH_P_8021Q);
- skb_reset_network_header(skb);
}
/* Before delegating work to the lower layer, enter our MAC-address */
@@ -317,29 +315,6 @@ static int vlan_dev_hard_header(struct sk_buff *skb, struct net_device *dev,
dev = vlan_dev_info(dev)->real_dev;
- /* MPLS can send us skbuffs w/out enough space. This check will grow
- * the skb if it doesn't have enough headroom. Not a beautiful solution,
- * so I'll tick a counter so that users can know it's happening...
- * If they care...
- */
-
- /* NOTE: This may still break if the underlying device is not the final
- * device (and thus there are more headers to add...) It should work for
- * good-ole-ethernet though.
- */
- if (skb_headroom(skb) < dev->hard_header_len) {
- struct sk_buff *sk_tmp = skb;
- skb = skb_realloc_headroom(sk_tmp, dev->hard_header_len);
- kfree_skb(sk_tmp);
- if (skb == NULL) {
- struct net_device_stats *stats = &vdev->stats;
- stats->tx_dropped++;
- return -ENOMEM;
- }
- vlan_dev_info(vdev)->cnt_inc_headroom_on_tx++;
- pr_debug("%s: %s: had to grow skb\n", __func__, vdev->name);
- }
-
if (build_vlan_header) {
/* Now make the underlying real hard header */
rc = dev_hard_header(skb, dev, ETH_P_8021Q, daddr, saddr,
@@ -373,7 +348,7 @@ static int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) {
int orig_headroom = skb_headroom(skb);
- unsigned short veth_TCI;
+ u16 vlan_tci;
/* This is not a VLAN frame...but we can fix that! */
vlan_dev_info(dev)->cnt_encap_on_xmit++;
@@ -386,10 +361,10 @@ static int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
* CFI 1 bit
* VLAN ID 12 bits (low bits)
*/
- veth_TCI = vlan_dev_info(dev)->vlan_id;
- veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb);
+ vlan_tci = vlan_dev_info(dev)->vlan_id;
+ vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
- skb = __vlan_put_tag(skb, veth_TCI);
+ skb = __vlan_put_tag(skb, vlan_tci);
if (!skb) {
stats->tx_dropped++;
return 0;
@@ -422,7 +397,7 @@ static int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct net_device_stats *stats = &dev->stats;
- unsigned short veth_TCI;
+ u16 vlan_tci;
/* Construct the second two bytes. This field looks something
* like:
@@ -430,9 +405,9 @@ static int vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb,
* CFI 1 bit
* VLAN ID 12 bits (low bits)
*/
- veth_TCI = vlan_dev_info(dev)->vlan_id;
- veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb);
- skb = __vlan_hwaccel_put_tag(skb, veth_TCI);
+ vlan_tci = vlan_dev_info(dev)->vlan_id;
+ vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
+ skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
stats->tx_packets++;
stats->tx_bytes += skb->len;
@@ -457,7 +432,7 @@ static int vlan_dev_change_mtu(struct net_device *dev, int new_mtu)
}
void vlan_dev_set_ingress_priority(const struct net_device *dev,
- u32 skb_prio, short vlan_prio)
+ u32 skb_prio, u16 vlan_prio)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
@@ -470,7 +445,7 @@ void vlan_dev_set_ingress_priority(const struct net_device *dev,
}
int vlan_dev_set_egress_priority(const struct net_device *dev,
- u32 skb_prio, short vlan_prio)
+ u32 skb_prio, u16 vlan_prio)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct vlan_priority_tci_mapping *mp = NULL;
@@ -507,18 +482,23 @@ int vlan_dev_set_egress_priority(const struct net_device *dev,
}
/* Flags are defined in the vlan_flags enum in include/linux/if_vlan.h file. */
-int vlan_dev_set_vlan_flag(const struct net_device *dev,
- u32 flag, short flag_val)
+int vlan_dev_change_flags(const struct net_device *dev, u32 flags, u32 mask)
{
- /* verify flag is supported */
- if (flag == VLAN_FLAG_REORDER_HDR) {
- if (flag_val)
- vlan_dev_info(dev)->flags |= VLAN_FLAG_REORDER_HDR;
+ struct vlan_dev_info *vlan = vlan_dev_info(dev);
+ u32 old_flags = vlan->flags;
+
+ if (mask & ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP))
+ return -EINVAL;
+
+ vlan->flags = (old_flags & ~mask) | (flags & mask);
+
+ if (netif_running(dev) && (vlan->flags ^ old_flags) & VLAN_FLAG_GVRP) {
+ if (vlan->flags & VLAN_FLAG_GVRP)
+ vlan_gvrp_request_join(dev);
else
- vlan_dev_info(dev)->flags &= ~VLAN_FLAG_REORDER_HDR;
- return 0;
+ vlan_gvrp_request_leave(dev);
}
- return -EINVAL;
+ return 0;
}
void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
@@ -526,11 +506,6 @@ void vlan_dev_get_realdev_name(const struct net_device *dev, char *result)
strncpy(result, vlan_dev_info(dev)->real_dev->name, 23);
}
-void vlan_dev_get_vid(const struct net_device *dev, unsigned short *result)
-{
- *result = vlan_dev_info(dev)->vlan_id;
-}
-
static int vlan_dev_open(struct net_device *dev)
{
struct vlan_dev_info *vlan = vlan_dev_info(dev);
@@ -552,12 +527,19 @@ static int vlan_dev_open(struct net_device *dev)
if (dev->flags & IFF_PROMISC)
dev_set_promiscuity(real_dev, 1);
+ if (vlan->flags & VLAN_FLAG_GVRP)
+ vlan_gvrp_request_join(dev);
+
return 0;
}
static int vlan_dev_stop(struct net_device *dev)
{
- struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
+ struct vlan_dev_info *vlan = vlan_dev_info(dev);
+ struct net_device *real_dev = vlan->real_dev;
+
+ if (vlan->flags & VLAN_FLAG_GVRP)
+ vlan_gvrp_request_leave(dev);
dev_mc_unsync(real_dev, dev);
dev_unicast_unsync(real_dev, dev);
@@ -683,7 +665,7 @@ static int vlan_dev_init(struct net_device *dev)
dev->hard_start_xmit = vlan_dev_hard_start_xmit;
}
- if (real_dev->priv_flags & IFF_802_1Q_VLAN)
+ if (is_vlan_dev(real_dev))
subclass = 1;
lockdep_set_class_and_subclass(&dev->_xmit_lock,
@@ -705,6 +687,22 @@ static void vlan_dev_uninit(struct net_device *dev)
}
}
+static u32 vlan_ethtool_get_rx_csum(struct net_device *dev)
+{
+ const struct vlan_dev_info *vlan = vlan_dev_info(dev);
+ struct net_device *real_dev = vlan->real_dev;
+
+ if (real_dev->ethtool_ops == NULL ||
+ real_dev->ethtool_ops->get_rx_csum == NULL)
+ return 0;
+ return real_dev->ethtool_ops->get_rx_csum(real_dev);
+}
+
+static const struct ethtool_ops vlan_ethtool_ops = {
+ .get_link = ethtool_op_get_link,
+ .get_rx_csum = vlan_ethtool_get_rx_csum,
+};
+
void vlan_setup(struct net_device *dev)
{
ether_setup(dev);
@@ -723,6 +721,7 @@ void vlan_setup(struct net_device *dev)
dev->change_rx_flags = vlan_dev_change_rx_flags;
dev->do_ioctl = vlan_dev_ioctl;
dev->destructor = free_netdev;
+ dev->ethtool_ops = &vlan_ethtool_ops;
memset(dev->broadcast, 0, ETH_ALEN);
}
diff --git a/net/8021q/vlan_gvrp.c b/net/8021q/vlan_gvrp.c
new file mode 100644
index 00000000000..061ceceeef1
--- /dev/null
+++ b/net/8021q/vlan_gvrp.c
@@ -0,0 +1,66 @@
+/*
+ * IEEE 802.1Q GARP VLAN Registration Protocol (GVRP)
+ *
+ * Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+#include <linux/types.h>
+#include <linux/if_vlan.h>
+#include <net/garp.h>
+#include "vlan.h"
+
+#define GARP_GVRP_ADDRESS { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x21 }
+
+enum gvrp_attributes {
+ GVRP_ATTR_INVALID,
+ GVRP_ATTR_VID,
+ __GVRP_ATTR_MAX
+};
+#define GVRP_ATTR_MAX (__GVRP_ATTR_MAX - 1)
+
+static struct garp_application vlan_gvrp_app __read_mostly = {
+ .proto.group_address = GARP_GVRP_ADDRESS,
+ .maxattr = GVRP_ATTR_MAX,
+ .type = GARP_APPLICATION_GVRP,
+};
+
+int vlan_gvrp_request_join(const struct net_device *dev)
+{
+ const struct vlan_dev_info *vlan = vlan_dev_info(dev);
+ __be16 vlan_id = htons(vlan->vlan_id);
+
+ return garp_request_join(vlan->real_dev, &vlan_gvrp_app,
+ &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
+}
+
+void vlan_gvrp_request_leave(const struct net_device *dev)
+{
+ const struct vlan_dev_info *vlan = vlan_dev_info(dev);
+ __be16 vlan_id = htons(vlan->vlan_id);
+
+ garp_request_leave(vlan->real_dev, &vlan_gvrp_app,
+ &vlan_id, sizeof(vlan_id), GVRP_ATTR_VID);
+}
+
+int vlan_gvrp_init_applicant(struct net_device *dev)
+{
+ return garp_init_applicant(dev, &vlan_gvrp_app);
+}
+
+void vlan_gvrp_uninit_applicant(struct net_device *dev)
+{
+ garp_uninit_applicant(dev, &vlan_gvrp_app);
+}
+
+int __init vlan_gvrp_init(void)
+{
+ return garp_register_application(&vlan_gvrp_app);
+}
+
+void vlan_gvrp_uninit(void)
+{
+ garp_unregister_application(&vlan_gvrp_app);
+}
diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c
index c93e69ec28e..e9c91dcecc9 100644
--- a/net/8021q/vlan_netlink.c
+++ b/net/8021q/vlan_netlink.c
@@ -59,7 +59,8 @@ static int vlan_validate(struct nlattr *tb[], struct nlattr *data[])
}
if (data[IFLA_VLAN_FLAGS]) {
flags = nla_data(data[IFLA_VLAN_FLAGS]);
- if ((flags->flags & flags->mask) & ~VLAN_FLAG_REORDER_HDR)
+ if ((flags->flags & flags->mask) &
+ ~(VLAN_FLAG_REORDER_HDR | VLAN_FLAG_GVRP))
return -EINVAL;
}
@@ -75,7 +76,6 @@ static int vlan_validate(struct nlattr *tb[], struct nlattr *data[])
static int vlan_changelink(struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[])
{
- struct vlan_dev_info *vlan = vlan_dev_info(dev);
struct ifla_vlan_flags *flags;
struct ifla_vlan_qos_mapping *m;
struct nlattr *attr;
@@ -83,8 +83,7 @@ static int vlan_changelink(struct net_device *dev,
if (data[IFLA_VLAN_FLAGS]) {
flags = nla_data(data[IFLA_VLAN_FLAGS]);
- vlan->flags = (vlan->flags & ~flags->mask) |
- (flags->flags & flags->mask);
+ vlan_dev_change_flags(dev, flags->flags, flags->mask);
}
if (data[IFLA_VLAN_INGRESS_QOS]) {
nla_for_each_nested(attr, data[IFLA_VLAN_INGRESS_QOS], rem) {
diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
index 08b54b593d5..6073a888b6f 100644
--- a/net/8021q/vlanproc.c
+++ b/net/8021q/vlanproc.c
@@ -290,7 +290,7 @@ static int vlandev_seq_show(struct seq_file *seq, void *offset)
static const char fmt[] = "%30s %12lu\n";
int i;
- if (!(vlandev->priv_flags & IFF_802_1Q_VLAN))
+ if (!is_vlan_dev(vlandev))
return 0;
seq_printf(seq,
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 02:36:46 +0000