*/
#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/in.h>
-#include <linux/init.h>
-#include <asm/uaccess.h> /* for copy_from_user */
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
-#include <net/datalink.h>
-#include <net/p8022.h>
+#include <linux/ethtool.h>
#include <net/arp.h>
#include "vlan.h"
#include "vlanproc.h"
#include <linux/if_vlan.h>
-#include <net/ip.h>
/*
* Rebuild the Ethernet MAC header. This is called after an ARP
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,
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)
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;
}
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.. */
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;
unsigned int len)
{
struct vlan_hdr *vhdr;
- unsigned short veth_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);
-
- /* 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
- * device should look completely like an Ethernet device when the
- * REORDER_HEADER flag is set) The drawback to this is some extra
- * header shuffling in the hard_start_xmit. Users can turn off this
- * REORDER behaviour with the vconfig tool.
- */
- if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR))
- build_vlan_header = 1;
+ unsigned int vhdrlen = 0;
+ u16 vlan_tci = 0;
+ int rc;
- if (build_vlan_header) {
- vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
+ if (WARN_ON(skb_headroom(skb) < dev->hard_header_len))
+ return -ENOSPC;
- /* build the four bytes that make this a VLAN header. */
-
- /* Now, construct the second two bytes. This field looks
- * something like:
- * usr_priority: 3 bits (high bits)
- * 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);
+ if (!(vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR)) {
+ vhdr = (struct vlan_hdr *) skb_push(skb, VLAN_HLEN);
- vhdr->h_vlan_TCI = htons(veth_TCI);
+ vlan_tci = vlan_dev_info(dev)->vlan_id;
+ vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
+ vhdr->h_vlan_TCI = htons(vlan_tci);
/*
* Set the protocol type. For a packet of type ETH_P_802_3 we
* put the length in here instead. It is up to the 802.2
* layer to carry protocol information.
*/
-
if (type != ETH_P_802_3)
vhdr->h_vlan_encapsulated_proto = htons(type);
else
vhdr->h_vlan_encapsulated_proto = htons(len);
skb->protocol = htons(ETH_P_8021Q);
- skb_reset_network_header(skb);
+ type = ETH_P_8021Q;
+ vhdrlen = VLAN_HLEN;
}
/* Before delegating work to the lower layer, enter our MAC-address */
if (saddr == NULL)
saddr = dev->dev_addr;
+ /* Now make the underlying real hard header */
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,
- len + VLAN_HLEN);
- if (rc > 0)
- rc += VLAN_HLEN;
- else if (rc < 0)
- rc -= VLAN_HLEN;
- } else
- /* If here, then we'll just make a normal looking ethernet
- * frame, but, the hard_start_xmit method will insert the tag
- * (it has to be able to do this for bridged and other skbs
- * that don't come down the protocol stack in an orderly manner.
- */
- rc = dev_hard_header(skb, dev, type, daddr, saddr, len);
-
+ rc = dev_hard_header(skb, dev, type, daddr, saddr, len + vhdrlen);
+ if (rc > 0)
+ rc += vhdrlen;
return rc;
}
* 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) ||
- vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) {
- int orig_headroom = skb_headroom(skb);
- unsigned short veth_TCI;
+ vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) {
+ unsigned int orig_headroom = skb_headroom(skb);
+ u16 vlan_tci;
- /* This is not a VLAN frame...but we can fix that! */
vlan_dev_info(dev)->cnt_encap_on_xmit++;
- pr_debug("%s: proto to encap: 0x%hx\n",
- __func__, ntohs(veth->h_vlan_proto));
- /* Construct the second two bytes. This field looks something
- * like:
- * usr_priority: 3 bits (high bits)
- * 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_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_put_tag(skb, vlan_tci);
if (!skb) {
stats->tx_dropped++;
- return 0;
+ return NETDEV_TX_OK;
}
if (orig_headroom < VLAN_HLEN)
vlan_dev_info(dev)->cnt_inc_headroom_on_tx++;
}
- pr_debug("%s: about to send skb: %p to dev: %s\n",
- __func__, skb, skb->dev->name);
- pr_debug(" " MAC_FMT " " MAC_FMT " %4hx %4hx %4hx\n",
- veth->h_dest[0], veth->h_dest[1], veth->h_dest[2],
- veth->h_dest[3], veth->h_dest[4], veth->h_dest[5],
- veth->h_source[0], veth->h_source[1], veth->h_source[2],
- veth->h_source[3], veth->h_source[4], veth->h_source[5],
- veth->h_vlan_proto, veth->h_vlan_TCI,
- veth->h_vlan_encapsulated_proto);
-
- stats->tx_packets++; /* for statics only */
+ stats->tx_packets++;
stats->tx_bytes += skb->len;
skb->dev = vlan_dev_info(dev)->real_dev;
dev_queue_xmit(skb);
-
- return 0;
+ return NETDEV_TX_OK;
}
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:
- * usr_priority: 3 bits (high bits)
- * 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;
skb->dev = vlan_dev_info(dev)->real_dev;
dev_queue_xmit(skb);
-
- return 0;
+ return NETDEV_TX_OK;
}
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);
}
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;
}
/* 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)
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);
if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr)) {
err = dev_unicast_add(real_dev, dev->dev_addr, ETH_ALEN);
if (err < 0)
- return err;
+ goto out;
+ }
+
+ if (dev->flags & IFF_ALLMULTI) {
+ err = dev_set_allmulti(real_dev, 1);
+ if (err < 0)
+ goto del_unicast;
}
+ if (dev->flags & IFF_PROMISC) {
+ err = dev_set_promiscuity(real_dev, 1);
+ if (err < 0)
+ goto clear_allmulti;
+ }
+
memcpy(vlan->real_dev_addr, real_dev->dev_addr, ETH_ALEN);
- if (dev->flags & IFF_ALLMULTI)
- dev_set_allmulti(real_dev, 1);
- if (dev->flags & IFF_PROMISC)
- dev_set_promiscuity(real_dev, 1);
+ if (vlan->flags & VLAN_FLAG_GVRP)
+ vlan_gvrp_request_join(dev);
return 0;
+
+clear_allmulti:
+ if (dev->flags & IFF_ALLMULTI)
+ dev_set_allmulti(real_dev, -1);
+del_unicast:
+ if (compare_ether_addr(dev->dev_addr, real_dev->dev_addr))
+ dev_unicast_delete(real_dev, dev->dev_addr, ETH_ALEN);
+out:
+ return err;
}
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);
*/
static struct lock_class_key vlan_netdev_xmit_lock_key;
+static void vlan_dev_set_lockdep_one(struct net_device *dev,
+ struct netdev_queue *txq,
+ void *_subclass)
+{
+ lockdep_set_class_and_subclass(&txq->_xmit_lock,
+ &vlan_netdev_xmit_lock_key,
+ *(int *)_subclass);
+}
+
+static void vlan_dev_set_lockdep_class(struct net_device *dev, int subclass)
+{
+ netdev_for_each_tx_queue(dev, vlan_dev_set_lockdep_one, &subclass);
+}
+
static const struct header_ops vlan_header_ops = {
.create = vlan_dev_hard_header,
.rebuild = vlan_dev_rebuild_header,
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,
- &vlan_netdev_xmit_lock_key, subclass);
+ vlan_dev_set_lockdep_class(dev, subclass);
return 0;
}
}
}
+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 u32 vlan_ethtool_get_flags(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->features & NETIF_F_HW_VLAN_RX) ||
+ real_dev->ethtool_ops == NULL ||
+ real_dev->ethtool_ops->get_flags == NULL)
+ return 0;
+ return real_dev->ethtool_ops->get_flags(real_dev);
+}
+
+static const struct ethtool_ops vlan_ethtool_ops = {
+ .get_link = ethtool_op_get_link,
+ .get_rx_csum = vlan_ethtool_get_rx_csum,
+ .get_flags = vlan_ethtool_get_flags,
+};
+
void vlan_setup(struct net_device *dev)
{
ether_setup(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);
}
git.openpandora.org / pandora-kernel.git / blobdiff