/*
* Determine the packet's protocol ID. The rule here is that we
* assume 802.3 if the type field is short enough to be a length.
* This is normal practice and works for any 'now in use' protocol.
*
* Also, at this point we assume that we ARE dealing exclusively with
* VLAN packets, or packets that should be made into VLAN packets based
* on a default VLAN ID.
*
* NOTE: Should be similar to ethernet/eth.c.
*
* SANITY NOTE: This method is called when a packet is moving up the stack
* towards userland. To get here, it would have already passed
* through the ethernet/eth.c eth_type_trans() method.
* SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be
* stored UNALIGNED in the memory. RISC systems don't like
* such cases very much...
* SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be
* aligned, so there doesn't need to be any of the unaligned
* stuff. It has been commented out now... --Ben
*
*/
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;
struct vlan_rx_stats *rx_stats;
u16 vlan_id;
u16 vlan_tci;
skb = skb_share_check(skb, GFP_ATOMIC);
if (skb == NULL)
goto err_free;
if (unlikely(!pskb_may_pull(skb, VLAN_HLEN)))
goto err_free;
vhdr = (struct vlan_hdr *)skb->data;
vlan_tci = ntohs(vhdr->h_vlan_TCI);
vlan_id = vlan_tci & VLAN_VID_MASK;
rcu_read_lock();
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__, vlan_id, dev->name);
goto err_unlock;
}
rx_stats = per_cpu_ptr(vlan_dev_info(skb->dev)->vlan_rx_stats,
smp_processor_id());
rx_stats->rx_packets++;
rx_stats->rx_bytes += skb->len;
skb_pull_rcsum(skb, VLAN_HLEN);
skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci);
pr_debug("%s: priority: %u for TCI: %hu\n",
__func__, skb->priority, vlan_tci);
switch (skb->pkt_type) {
case PACKET_BROADCAST: /* Yeah, stats collect these together.. */
/* stats->broadcast ++; // no such counter :-( */
break;
case PACKET_MULTICAST:
rx_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;
default:
break;
}
vlan_set_encap_proto(skb, vhdr);
skb = vlan_check_reorder_header(skb);
if (!skb) {
rx_stats->rx_errors++;
goto err_unlock;
}
netif_rx(skb);
rcu_read_unlock();
return NET_RX_SUCCESS;
err_unlock:
rcu_read_unlock();
err_free:
kfree_skb(skb);
return NET_RX_DROP;
}
/*
* Determine the packet's protocol ID. The rule here is that we
* assume 802.3 if the type field is short enough to be a length.
* This is normal practice and works for any 'now in use' protocol.
*
* Also, at this point we assume that we ARE dealing exclusively with
* VLAN packets, or packets that should be made into VLAN packets based
* on a default VLAN ID.
*
* NOTE: Should be similar to ethernet/eth.c.
*
* SANITY NOTE: This method is called when a packet is moving up the stack
* towards userland. To get here, it would have already passed
* through the ethernet/eth.c eth_type_trans() method.
* SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be
* stored UNALIGNED in the memory. RISC systems don't like
* such cases very much...
* SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be aligned,
* so there doesn't need to be any of the unaligned stuff. It has
* been commented out now... --Ben
*
*/
int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
struct packet_type* ptype, struct net_device *orig_dev)
{
unsigned char *rawp = NULL;
struct vlan_hdr *vhdr = (struct vlan_hdr *)(skb->data);
unsigned short vid;
struct net_device_stats *stats;
unsigned short vlan_TCI;
__be16 proto;
/* vlan_TCI = ntohs(get_unaligned(&vhdr->h_vlan_TCI)); */
vlan_TCI = ntohs(vhdr->h_vlan_TCI);
vid = (vlan_TCI & VLAN_VID_MASK);
#ifdef VLAN_DEBUG
printk(VLAN_DBG "%s: skb: %p vlan_id: %hx\n",
__FUNCTION__, skb, vid);
#endif
/* Ok, we will find the correct VLAN device, strip the header,
* and then go on as usual.
*/
/* We have 12 bits of vlan ID.
*
* We must not drop allow preempt until we hold a
* reference to the device (netif_rx does that) or we
* fail.
*/
rcu_read_lock();
skb->dev = __find_vlan_dev(dev, vid);
if (!skb->dev) {
rcu_read_unlock();
#ifdef VLAN_DEBUG
printk(VLAN_DBG "%s: ERROR: No net_device for VID: %i on dev: %s [%i]\n",
__FUNCTION__, (unsigned int)(vid), dev->name, dev->ifindex);
#endif
kfree_skb(skb);
return -1;
}
skb->dev->last_rx = jiffies;
/* Bump the rx counters for the VLAN device. */
stats = vlan_dev_get_stats(skb->dev);
stats->rx_packets++;
stats->rx_bytes += skb->len;
skb_pull(skb, VLAN_HLEN); /* take off the VLAN header (4 bytes currently) */
/* Need to correct hardware checksum */
skb_postpull_rcsum(skb, vhdr, VLAN_HLEN);
/* Ok, lets check to make sure the device (dev) we
* came in on is what this VLAN is attached to.
*/
if (dev != VLAN_DEV_INFO(skb->dev)->real_dev) {
rcu_read_unlock();
#ifdef VLAN_DEBUG
printk(VLAN_DBG "%s: dropping skb: %p because came in on wrong device, dev: %s real_dev: %s, skb_dev: %s\n",
__FUNCTION__, skb, dev->name,
VLAN_DEV_INFO(skb->dev)->real_dev->name,
skb->dev->name);
#endif
kfree_skb(skb);
stats->rx_errors++;
return -1;
}
/*
* Deal with ingress priority mapping.
*/
skb->priority = vlan_get_ingress_priority(skb->dev, ntohs(vhdr->h_vlan_TCI));
#ifdef VLAN_DEBUG
printk(VLAN_DBG "%s: priority: %lu for TCI: %hu (hbo)\n",
__FUNCTION__, (unsigned long)(skb->priority),
ntohs(vhdr->h_vlan_TCI));
#endif
/* The ethernet driver already did the pkt_type calculations
* for us...
*/
switch (skb->pkt_type) {
case PACKET_BROADCAST: /* Yeah, stats collect these together.. */
// stats->broadcast ++; // no such counter :-(
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 (memcmp(eth_hdr(skb)->h_dest, skb->dev->dev_addr, ETH_ALEN) == 0) {
/* It is for our (changed) MAC-address! */
skb->pkt_type = PACKET_HOST;
}
break;
default:
break;
};
/* Was a VLAN packet, grab the encapsulated protocol, which the layer
* three protocols care about.
*/
/* proto = get_unaligned(&vhdr->h_vlan_encapsulated_proto); */
proto = vhdr->h_vlan_encapsulated_proto;
skb->protocol = proto;
if (ntohs(proto) >= 1536) {
/* place it back on the queue to be handled by
* true layer 3 protocols.
*/
/* See if we are configured to re-write the VLAN header
* to make it look like ethernet...
*/
skb = vlan_check_reorder_header(skb);
/* Can be null if skb-clone fails when re-ordering */
if (skb) {
netif_rx(skb);
} else {
/* TODO: Add a more specific counter here. */
stats->rx_errors++;
}
rcu_read_unlock();
return 0;
}
rawp = skb->data;
/*
* This is a magic hack to spot IPX packets. Older Novell breaks
* the protocol design and runs IPX over 802.3 without an 802.2 LLC
* layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
* won't work for fault tolerant netware but does for the rest.
*/
if (*(unsigned short *)rawp == 0xFFFF) {
skb->protocol = __constant_htons(ETH_P_802_3);
/* place it back on the queue to be handled by true layer 3 protocols.
*/
/* See if we are configured to re-write the VLAN header
* to make it look like ethernet...
*/
skb = vlan_check_reorder_header(skb);
/* Can be null if skb-clone fails when re-ordering */
if (skb) {
netif_rx(skb);
} else {
/* TODO: Add a more specific counter here. */
stats->rx_errors++;
}
rcu_read_unlock();
return 0;
}
/*
* Real 802.2 LLC
*/
skb->protocol = __constant_htons(ETH_P_802_2);
/* place it back on the queue to be handled by upper layer protocols.
*/
/* See if we are configured to re-write the VLAN header
* to make it look like ethernet...
*/
skb = vlan_check_reorder_header(skb);
/* Can be null if skb-clone fails when re-ordering */
if (skb) {
netif_rx(skb);
} else {
/* TODO: Add a more specific counter here. */
stats->rx_errors++;
}
rcu_read_unlock();
return 0;
}
/* Attach a VLAN device to a mac address (ie Ethernet Card).
* Returns the device that was created, or NULL if there was
* an error of some kind.
*/
static struct net_device *register_vlan_device(const char *eth_IF_name,
unsigned short VLAN_ID)
{
struct vlan_group *grp;
struct net_device *new_dev;
struct net_device *real_dev; /* the ethernet device */
int malloc_size = 0;
int r;
#ifdef VLAN_DEBUG
printk(VLAN_DBG "%s: if_name -:%s:- vid: %i\n",
__FUNCTION__, eth_IF_name, VLAN_ID);
#endif
if (VLAN_ID >= VLAN_VID_MASK)
goto out_ret_null;
/* find the device relating to eth_IF_name. */
real_dev = dev_get_by_name(eth_IF_name);
if (!real_dev)
goto out_ret_null;
if (real_dev->features & NETIF_F_VLAN_CHALLENGED) {
printk(VLAN_DBG "%s: VLANs not supported on %s.\n",
__FUNCTION__, real_dev->name);
goto out_put_dev;
}
if ((real_dev->features & NETIF_F_HW_VLAN_RX) &&
(real_dev->vlan_rx_register == NULL ||
real_dev->vlan_rx_kill_vid == NULL)) {
printk(VLAN_DBG "%s: Device %s has buggy VLAN hw accel.\n",
__FUNCTION__, real_dev->name);
goto out_put_dev;
}
if ((real_dev->features & NETIF_F_HW_VLAN_FILTER) &&
(real_dev->vlan_rx_add_vid == NULL ||
real_dev->vlan_rx_kill_vid == NULL)) {
printk(VLAN_DBG "%s: Device %s has buggy VLAN hw accel.\n",
__FUNCTION__, real_dev->name);
goto out_put_dev;
}
/* From this point on, all the data structures must remain
* consistent.
*/
rtnl_lock();
/* The real device must be up and operating in order to
* assosciate a VLAN device with it.
*/
if (!(real_dev->flags & IFF_UP))
goto out_unlock;
spin_lock_bh(&vlan_group_lock);
r = (__find_vlan_dev(real_dev, VLAN_ID) != NULL);
spin_unlock_bh(&vlan_group_lock);
if (r) {
/* was already registered. */
printk(VLAN_DBG "%s: ALREADY had VLAN registered\n", __FUNCTION__);
goto out_unlock;
}
malloc_size = (sizeof(struct net_device));
new_dev = (struct net_device *) kmalloc(malloc_size, GFP_KERNEL);
VLAN_MEM_DBG("net_device malloc, addr: %p size: %i\n",
new_dev, malloc_size);
if (new_dev == NULL)
goto out_unlock;
memset(new_dev, 0, malloc_size);
/* Set us up to have no queue, as the underlying Hardware device
* can do all the queueing we could want.
*/
new_dev->tx_queue_len = 0;
/* Gotta set up the fields for the device. */
#ifdef VLAN_DEBUG
printk(VLAN_DBG "About to allocate name, vlan_name_type: %i\n",
vlan_name_type);
#endif
switch (vlan_name_type) {
case VLAN_NAME_TYPE_RAW_PLUS_VID:
/* name will look like: eth1.0005 */
sprintf(new_dev->name, "%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
*/
sprintf(new_dev->name, "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
*/
sprintf(new_dev->name, "%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:
sprintf(new_dev->name, "vlan%.4i", VLAN_ID);
};
#ifdef VLAN_DEBUG
printk(VLAN_DBG "Allocated new name -:%s:-\n", new_dev->name);
#endif
/* set up method calls */
new_dev->init = vlan_dev_init;
new_dev->destructor = vlan_dev_destruct;
new_dev->features |= NETIF_F_DYNALLOC ;
/* new_dev->ifindex = 0; it will be set when added to
* the global list.
* iflink is set as well.
*/
new_dev->get_stats = vlan_dev_get_stats;
/* IFF_BROADCAST|IFF_MULTICAST; ??? */
new_dev->flags = real_dev->flags;
new_dev->flags &= ~IFF_UP;
/* Make this thing known as a VLAN device */
new_dev->priv_flags |= IFF_802_1Q_VLAN;
/* need 4 bytes for extra VLAN header info,
* hope the underlying device can handle it.
*/
new_dev->mtu = real_dev->mtu;
new_dev->change_mtu = vlan_dev_change_mtu;
/* TODO: maybe just assign it to be ETHERNET? */
new_dev->type = real_dev->type;
new_dev->hard_header_len = real_dev->hard_header_len;
if (!(real_dev->features & NETIF_F_HW_VLAN_TX)) {
/* Regular ethernet + 4 bytes (18 total). */
new_dev->hard_header_len += VLAN_HLEN;
}
new_dev->priv = kmalloc(sizeof(struct vlan_dev_info),
GFP_KERNEL);
VLAN_MEM_DBG("new_dev->priv malloc, addr: %p size: %i\n",
new_dev->priv,
sizeof(struct vlan_dev_info));
if (new_dev->priv == NULL)
goto out_free_newdev;
memset(new_dev->priv, 0, sizeof(struct vlan_dev_info));
memcpy(new_dev->broadcast, real_dev->broadcast, real_dev->addr_len);
memcpy(new_dev->dev_addr, real_dev->dev_addr, real_dev->addr_len);
new_dev->addr_len = real_dev->addr_len;
new_dev->open = vlan_dev_open;
new_dev->stop = vlan_dev_stop;
if (real_dev->features & NETIF_F_HW_VLAN_TX) {
new_dev->hard_header = real_dev->hard_header;
new_dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit;
new_dev->rebuild_header = real_dev->rebuild_header;
} else {
new_dev->hard_header = vlan_dev_hard_header;
new_dev->hard_start_xmit = vlan_dev_hard_start_xmit;
new_dev->rebuild_header = vlan_dev_rebuild_header;
}
new_dev->hard_header_parse = real_dev->hard_header_parse;
new_dev->set_mac_address = vlan_dev_set_mac_address;
new_dev->set_multicast_list = vlan_dev_set_multicast_list;
VLAN_DEV_INFO(new_dev)->vlan_id = VLAN_ID; /* 1 through VLAN_VID_MASK */
VLAN_DEV_INFO(new_dev)->real_dev = real_dev;
VLAN_DEV_INFO(new_dev)->dent = NULL;
VLAN_DEV_INFO(new_dev)->flags = vlan_default_dev_flags;
#ifdef VLAN_DEBUG
printk(VLAN_DBG "About to go find the group for idx: %i\n",
real_dev->ifindex);
#endif
/* So, got the sucker initialized, now lets place
* it into our local structure.
*/
spin_lock_bh(&vlan_group_lock);
grp = __vlan_find_group(real_dev->ifindex);
spin_unlock_bh(&vlan_group_lock);
/* Note, we are running under the RTNL semaphore
* so it cannot "appear" on us.
*/
if (!grp) { /* need to add a new group */
grp = kmalloc(sizeof(struct vlan_group), GFP_KERNEL);
if (!grp)
goto out_free_newdev_priv;
/* printk(KERN_ALERT "VLAN REGISTER: Allocated new group.\n"); */
memset(grp, 0, sizeof(struct vlan_group));
grp->real_dev_ifindex = real_dev->ifindex;
spin_lock_bh(&vlan_group_lock);
__grp_hash(grp);
spin_unlock_bh(&vlan_group_lock);
if (real_dev->features & NETIF_F_HW_VLAN_RX)
real_dev->vlan_rx_register(real_dev, grp);
}
grp->vlan_devices[VLAN_ID] = new_dev;
if (vlan_proc_add_dev(new_dev)<0)/* create it's proc entry */
printk(KERN_WARNING "VLAN: failed to add proc entry for %s\n",
new_dev->name);
if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
real_dev->vlan_rx_add_vid(real_dev, VLAN_ID);
register_netdevice(new_dev);
rtnl_unlock();
/* NOTE: We have a reference to the real device,
* so hold on to the reference.
*/
MOD_INC_USE_COUNT; /* Add was a success!! */
#ifdef VLAN_DEBUG
printk(VLAN_DBG "Allocated new device successfully, returning.\n");
#endif
return new_dev;
out_free_newdev_priv:
kfree(new_dev->priv);
out_free_newdev:
kfree(new_dev);
out_unlock:
rtnl_unlock();
out_put_dev:
dev_put(real_dev);
out_ret_null:
return NULL;
}
/*
* Determine the packet's protocol ID. The rule here is that we
* assume 802.3 if the type field is short enough to be a length.
* This is normal practice and works for any 'now in use' protocol.
*
* Also, at this point we assume that we ARE dealing exclusively with
* VLAN packets, or packets that should be made into VLAN packets based
* on a default VLAN ID.
*
* NOTE: Should be similar to ethernet/eth.c.
*
* SANITY NOTE: This method is called when a packet is moving up the stack
* towards userland. To get here, it would have already passed
* through the ethernet/eth.c eth_type_trans() method.
* SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be
* stored UNALIGNED in the memory. RISC systems don't like
* such cases very much...
* SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be
* aligned, so there doesn't need to be any of the unaligned
* stuff. It has been commented out now... --Ben
*
*/
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;
struct net_device_stats *stats;
u16 vlan_id;
u16 vlan_tci;
skb = skb_share_check(skb, GFP_ATOMIC);
if (skb == NULL)
goto err_free;
if (unlikely(!pskb_may_pull(skb, VLAN_HLEN)))
goto err_free;
vhdr = (struct vlan_hdr *)skb->data;
vlan_tci = ntohs(vhdr->h_vlan_TCI);
vlan_id = vlan_tci & VLAN_VID_MASK;
rcu_read_lock();
skb->dev = __find_vlan_dev(dev, vlan_id);
if (!skb->dev) {
#if defined(CONFIG_BCM_SMUX)
/* start bridge mode vlan pkt is discard A36D08034 by f00110348 */
if (orig_dev->priv_flags & IFF_RSMUX)
{
skb->dev = NULL;
rcu_read_unlock(); /* add unlock, or crash 20111225 by f00110348 */
return 0;
}
/* end bridge mode vlan pkt is discard A36D08034 by f00110348 */
#endif
pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n",
__func__, vlan_id, dev->name);
goto err_unlock;
}
stats = &skb->dev->stats;
stats->rx_packets++;
stats->rx_bytes += skb->len;
skb_pull_rcsum(skb, VLAN_HLEN);
skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci);
/* Start of modified by f00120964 for qos function 2012-4-2*/
#ifdef CONFIG_DT_QOS
skb->mark |= s_dtQos8021PtoMark[((ntohs(vhdr->h_vlan_TCI) >> 13) & 0x7)];
#endif
/* End of modified by f00120964 for qos function 2012-4-2*/
pr_debug("%s: priority: %u for TCI: %hu\n",
__func__, skb->priority, vlan_tci);
switch (skb->pkt_type) {
case PACKET_BROADCAST: /* Yeah, stats collect these together.. */
/* stats->broadcast ++; // no such counter :-( */
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;
default:
break;
}
vlan_set_encap_proto(skb, vhdr);
skb = vlan_check_reorder_header(skb);
if (!skb) {
stats->rx_errors++;
goto err_unlock;
}
netif_rx(skb);
rcu_read_unlock();
return NET_RX_SUCCESS;
err_unlock:
rcu_read_unlock();
err_free:
kfree_skb(skb);
return NET_RX_DROP;
}
/*
* Determine the packet's protocol ID. The rule here is that we
* assume 802.3 if the type field is short enough to be a length.
* This is normal practice and works for any 'now in use' protocol.
*
* Also, at this point we assume that we ARE dealing exclusively with
* VLAN packets, or packets that should be made into VLAN packets based
* on a default VLAN ID.
*
* NOTE: Should be similar to ethernet/eth.c.
*
* SANITY NOTE: This method is called when a packet is moving up the stack
* towards userland. To get here, it would have already passed
* through the ethernet/eth.c eth_type_trans() method.
* SANITY NOTE 2: We are referencing to the VLAN_HDR frields, which MAY be
* stored UNALIGNED in the memory. RISC systems don't like
* such cases very much...
* SANITY NOTE 2a: According to Dave Miller & Alexey, it will always be
* aligned, so there doesn't need to be any of the unaligned
* stuff. It has been commented out now... --Ben
*
*/
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;
struct vlan_rx_stats *rx_stats;
struct net_device *vlan_dev;
u16 vlan_id;
u16 vlan_tci;
#if defined(CONFIG_TCSUPPORT_VLAN_TAG)
u16 *proto = NULL;
#endif
#if defined(CONFIG_TCSUPPORT_PON_VLAN)
int ret = 0;
#endif
skb = skb_share_check(skb, GFP_ATOMIC);
if (skb == NULL)
goto err_free;
if (unlikely(!pskb_may_pull(skb, VLAN_HLEN)))
goto err_free;
vhdr = (struct vlan_hdr *)skb->data;
vlan_tci = ntohs(vhdr->h_vlan_TCI);
vlan_id = vlan_tci & VLAN_VID_MASK;
#ifdef CONFIG_TCSUPPORT_PON_VLAN
#if 0
if(orig_dev->name[0] == 'e')
skb->pon_vlan_flag |= PON_PKT_FROM_LAN;
else if(orig_dev->name[0] == 'n')
{
skb->pon_vlan_flag |= PON_PKT_FROM_WAN;
skb->pon_vlan_flag |= PON_PKT_ROUTING_FLAG;
}
#endif
if(ptype->type != ETH_P_8021Q)
{
goto Pon_Handle;
}
#endif
rcu_read_lock();
vlan_dev = __find_vlan_dev(dev, vlan_id);
/* If the VLAN device is defined, we use it.
* If not, and the VID is 0, it is a 802.1p packet (not
* really a VLAN), so we will just netif_rx it later to the
* original interface, but with the skb->proto set to the
* wrapped proto: we do nothing here.
*/
if (!vlan_dev) {
#ifdef CONFIG_TCSUPPORT_PON_VLAN
Pon_Handle:
if(pon_store_tag_hook)
{
ret = pon_store_tag_hook(skb, orig_dev);
if(ret == 0)
{
netif_rx(skb);
return 0;
}
else if(ret == -1)
{
kfree_skb(skb);
return -1;
}
else
{
//HGU mode,do nothing
}
}
#endif
#ifdef CONFIG_TCSUPPORT_VLAN_TAG
if (check_vtag_hook && (check_vtag_hook() == 1)) {
if (remove_vtag_hook) {
if (remove_vtag_hook(skb, orig_dev) == -1) {
/* must free skb !! */
kfree_skb(skb);
rcu_read_unlock();
return -1;
}
else {
netif_rx(skb);
rcu_read_unlock();
return 0;
}
}
else {
goto Normal_Handle;
}
}
else {
Normal_Handle:
#if !defined(CONFIG_TCSUPPORT_CT)
if((orig_dev != NULL) && ((orig_dev->name[0] == 'b') || (orig_dev->name[0] == 'n')))
#endif
{
proto = vhdr->h_vlan_encapsulated_proto;
skb->protocol = proto;
/* Take off the VLAN header (4 bytes currently) */
skb_pull_rcsum(skb, VLAN_HLEN);
skb->dev = orig_dev;
netif_rx(skb);
rcu_read_unlock();
return 0;
}
else {
pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n",
__func__, vlan_id, dev->name);
kfree_skb(skb);
rcu_read_unlock();
return -1;
}
}
#else
if (vlan_id) {
pr_debug("%s: ERROR: No net_device for VID: %u on dev: %s\n",
__func__, vlan_id, dev->name);
goto err_unlock;
}
rx_stats = NULL;
#endif
} else {
skb->dev = vlan_dev;
#if !defined(CONFIG_TCSUPPORT_CT)
#ifdef CONFIG_PORT_BINDING
if (skb->dev->name[0] == 'e') {
// skb->mark |= MASK_ORIGIN_DEV;
skb->portbind_mark |= MASK_ORIGIN_DEV;
memcpy(skb->orig_dev_name, skb->dev->name, IFNAMSIZ);
//printk("vlan_skb_recv: begin orig_dev name is [%s], orig_dev name is [%s]\n", skb->orig_dev_name, orig_dev->name);
}
#endif
#endif
rx_stats = per_cpu_ptr(vlan_dev_info(skb->dev)->vlan_rx_stats,
smp_processor_id());
u64_stats_update_begin(&rx_stats->syncp);
rx_stats->rx_packets++;
rx_stats->rx_bytes += skb->len;
skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci);
pr_debug("%s: priority: %u for TCI: %hu\n",
__func__, skb->priority, vlan_tci);
switch (skb->pkt_type) {
case PACKET_BROADCAST:
/* Yeah, stats collect these together.. */
/* stats->broadcast ++; // no such counter :-( */
break;
case PACKET_MULTICAST:
rx_stats->rx_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;
default:
break;
}
u64_stats_update_end(&rx_stats->syncp);
}
skb_pull_rcsum(skb, VLAN_HLEN);
vlan_set_encap_proto(skb, vhdr);
if (vlan_dev) {
skb = vlan_check_reorder_header(skb);
if (!skb) {
rx_stats->rx_errors++;
goto err_unlock;
}
}
netif_rx(skb);
rcu_read_unlock();
return NET_RX_SUCCESS;
err_unlock:
rcu_read_unlock();
err_free:
kfree_skb(skb);
return NET_RX_DROP;
}