#include <linux/if_ether.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
#include <linux/notifier.h>
#include <linux/skbuff.h>
#include <net/net_namespace.h>
#include <linux/err.h>
#include <linux/ctype.h>
#include <linux/if_arp.h>
+#include <linux/if_vlan.h>
#include "net-sysfs.h"
struct dma_client client;
spinlock_t lock;
cpumask_t channel_mask;
- struct dma_chan *channels[NR_CPUS];
+ struct dma_chan **channels;
};
static enum dma_state_client
/* Device list insertion */
static int list_netdevice(struct net_device *dev)
{
- struct net *net = dev->nd_net;
+ struct net *net = dev_net(dev);
ASSERT_RTNL();
for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
if (s[i].name[0] == '\0' || s[i].name[0] == ' ') {
memset(s[i].name, 0, sizeof(s[i].name));
- strcpy(s[i].name, name);
+ strlcpy(s[i].name, name, IFNAMSIZ);
memcpy(&s[i].map, map, sizeof(s[i].map));
break;
}
for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
if (s[i].name[0] != '\0' && s[i].name[0] != ' ' &&
- !strncmp(dev->name, s[i].name, strlen(s[i].name))) {
+ !strcmp(dev->name, s[i].name)) {
dev->irq = s[i].map.irq;
dev->base_addr = s[i].map.base_addr;
dev->mem_start = s[i].map.mem_start;
struct net *net;
int ret;
- BUG_ON(!dev->nd_net);
- net = dev->nd_net;
+ BUG_ON(!dev_net(dev));
+ net = dev_net(dev);
ret = __dev_alloc_name(net, name, buf);
if (ret >= 0)
strlcpy(dev->name, buf, IFNAMSIZ);
struct net *net;
ASSERT_RTNL();
- BUG_ON(!dev->nd_net);
+ BUG_ON(!dev_net(dev));
- net = dev->nd_net;
+ net = dev_net(dev);
if (dev->flags & IFF_UP)
return -EBUSY;
strlcpy(dev->name, newname, IFNAMSIZ);
rollback:
- device_rename(&dev->dev, dev->name);
+ err = device_rename(&dev->dev, dev->name);
+ if (err) {
+ memcpy(dev->name, oldname, IFNAMSIZ);
+ return err;
+ }
write_lock_bh(&dev_base_lock);
hlist_del(&dev->name_hlist);
}
}
+void netdev_bonding_change(struct net_device *dev)
+{
+ call_netdevice_notifiers(NETDEV_BONDING_FAILOVER, dev);
+}
+EXPORT_SYMBOL(netdev_bonding_change);
+
/**
* dev_load - load a network module
* @net: the applicable net namespace
{
int ret = 0;
+ ASSERT_RTNL();
+
/*
* Is it already up?
*/
*/
int dev_close(struct net_device *dev)
{
+ ASSERT_RTNL();
+
might_sleep();
if (!(dev->flags & IFF_UP))
}
+/**
+ * dev_disable_lro - disable Large Receive Offload on a device
+ * @dev: device
+ *
+ * Disable Large Receive Offload (LRO) on a net device. Must be
+ * called under RTNL. This is needed if received packets may be
+ * forwarded to another interface.
+ */
+void dev_disable_lro(struct net_device *dev)
+{
+ if (dev->ethtool_ops && dev->ethtool_ops->get_flags &&
+ dev->ethtool_ops->set_flags) {
+ u32 flags = dev->ethtool_ops->get_flags(dev);
+ if (flags & ETH_FLAG_LRO) {
+ flags &= ~ETH_FLAG_LRO;
+ dev->ethtool_ops->set_flags(dev, flags);
+ }
+ }
+ WARN_ON(dev->features & NETIF_F_LRO);
+}
+EXPORT_SYMBOL(dev_disable_lro);
+
+
static int dev_boot_phase = 1;
/*
}
EXPORT_SYMBOL(netif_device_attach);
+static bool can_checksum_protocol(unsigned long features, __be16 protocol)
+{
+ return ((features & NETIF_F_GEN_CSUM) ||
+ ((features & NETIF_F_IP_CSUM) &&
+ protocol == htons(ETH_P_IP)) ||
+ ((features & NETIF_F_IPV6_CSUM) &&
+ protocol == htons(ETH_P_IPV6)));
+}
+
+static bool dev_can_checksum(struct net_device *dev, struct sk_buff *skb)
+{
+ if (can_checksum_protocol(dev->features, skb->protocol))
+ return true;
+
+ if (skb->protocol == htons(ETH_P_8021Q)) {
+ struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
+ if (can_checksum_protocol(dev->features & dev->vlan_features,
+ veh->h_vlan_encapsulated_proto))
+ return true;
+ }
+
+ return false;
+}
/*
* Invalidate hardware checksum when packet is to be mangled, and
if (!segs)
return 0;
- if (unlikely(IS_ERR(segs)))
+ if (IS_ERR(segs))
return PTR_ERR(segs);
skb->next = segs;
if (skb->ip_summed == CHECKSUM_PARTIAL) {
skb_set_transport_header(skb, skb->csum_start -
skb_headroom(skb));
-
- if (!(dev->features & NETIF_F_GEN_CSUM) &&
- !((dev->features & NETIF_F_IP_CSUM) &&
- skb->protocol == htons(ETH_P_IP)) &&
- !((dev->features & NETIF_F_IPV6_CSUM) &&
- skb->protocol == htons(ETH_P_IPV6)))
- if (skb_checksum_help(skb))
- goto out_kfree_skb;
+ if (!dev_can_checksum(dev, skb) && skb_checksum_help(skb))
+ goto out_kfree_skb;
}
gso:
rcu_read_lock();
+ /* Don't receive packets in an exiting network namespace */
+ if (!net_alive(dev_net(skb->dev)))
+ goto out;
+
#ifdef CONFIG_NET_CLS_ACT
if (skb->tc_verd & TC_NCLS) {
skb->tc_verd = CLR_TC_NCLS(skb->tc_verd);
*
* The entry's receive function will be scheduled to run
*/
-void fastcall __napi_schedule(struct napi_struct *n)
+void __napi_schedule(struct napi_struct *n)
{
unsigned long flags;
{
struct netif_rx_stats *rc = NULL;
- while (*pos < NR_CPUS)
+ while (*pos < nr_cpu_ids)
if (cpu_online(*pos)) {
rc = &per_cpu(netdev_rx_stat, *pos);
break;
if (v == SEQ_START_TOKEN)
seq_puts(seq, "Type Device Function\n");
- else {
+ else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) {
if (pt->type == htons(ETH_P_ALL))
seq_puts(seq, "ALL ");
else
static int ptype_seq_open(struct inode *inode, struct file *file)
{
- return seq_open(file, &ptype_seq_ops);
+ return seq_open_net(inode, file, &ptype_seq_ops,
+ sizeof(struct seq_net_private));
}
static const struct file_operations ptype_seq_fops = {
.open = ptype_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release,
+ .release = seq_release_net,
};
return 0;
}
-static void __dev_set_promiscuity(struct net_device *dev, int inc)
+static int __dev_set_promiscuity(struct net_device *dev, int inc)
{
unsigned short old_flags = dev->flags;
ASSERT_RTNL();
- if ((dev->promiscuity += inc) == 0)
- dev->flags &= ~IFF_PROMISC;
- else
- dev->flags |= IFF_PROMISC;
+ dev->flags |= IFF_PROMISC;
+ dev->promiscuity += inc;
+ if (dev->promiscuity == 0) {
+ /*
+ * Avoid overflow.
+ * If inc causes overflow, untouch promisc and return error.
+ */
+ if (inc < 0)
+ dev->flags &= ~IFF_PROMISC;
+ else {
+ dev->promiscuity -= inc;
+ printk(KERN_WARNING "%s: promiscuity touches roof, "
+ "set promiscuity failed, promiscuity feature "
+ "of device might be broken.\n", dev->name);
+ return -EOVERFLOW;
+ }
+ }
if (dev->flags != old_flags) {
printk(KERN_INFO "device %s %s promiscuous mode\n",
dev->name, (dev->flags & IFF_PROMISC) ? "entered" :
if (dev->change_rx_flags)
dev->change_rx_flags(dev, IFF_PROMISC);
}
+ return 0;
}
/**
* remains above zero the interface remains promiscuous. Once it hits zero
* the device reverts back to normal filtering operation. A negative inc
* value is used to drop promiscuity on the device.
+ * Return 0 if successful or a negative errno code on error.
*/
-void dev_set_promiscuity(struct net_device *dev, int inc)
+int dev_set_promiscuity(struct net_device *dev, int inc)
{
unsigned short old_flags = dev->flags;
+ int err;
- __dev_set_promiscuity(dev, inc);
+ err = __dev_set_promiscuity(dev, inc);
+ if (err < 0)
+ return err;
if (dev->flags != old_flags)
dev_set_rx_mode(dev);
+ return err;
}
/**
* to all interfaces. Once it hits zero the device reverts back to normal
* filtering operation. A negative @inc value is used to drop the counter
* when releasing a resource needing all multicasts.
+ * Return 0 if successful or a negative errno code on error.
*/
-void dev_set_allmulti(struct net_device *dev, int inc)
+int dev_set_allmulti(struct net_device *dev, int inc)
{
unsigned short old_flags = dev->flags;
ASSERT_RTNL();
dev->flags |= IFF_ALLMULTI;
- if ((dev->allmulti += inc) == 0)
- dev->flags &= ~IFF_ALLMULTI;
+ dev->allmulti += inc;
+ if (dev->allmulti == 0) {
+ /*
+ * Avoid overflow.
+ * If inc causes overflow, untouch allmulti and return error.
+ */
+ if (inc < 0)
+ dev->flags &= ~IFF_ALLMULTI;
+ else {
+ dev->allmulti -= inc;
+ printk(KERN_WARNING "%s: allmulti touches roof, "
+ "set allmulti failed, allmulti feature of "
+ "device might be broken.\n", dev->name);
+ return -EOVERFLOW;
+ }
+ }
if (dev->flags ^ old_flags) {
if (dev->change_rx_flags)
dev->change_rx_flags(dev, IFF_ALLMULTI);
dev_set_rx_mode(dev);
}
+ return 0;
}
/*
/**
* dev_unicast_add - add a secondary unicast address
* @dev: device
- * @addr: address to delete
+ * @addr: address to add
* @alen: length of @addr
*
* Add a secondary unicast address to the device or increase
EXPORT_SYMBOL(dev_unicast_sync);
/**
- * dev_unicast_unsync - Remove synchronized addresses from the destination
- * device
+ * dev_unicast_unsync - Remove synchronized addresses from the destination device
* @to: destination device
* @from: source device
*
* Load in the correct multicast list now the flags have changed.
*/
- if (dev->change_rx_flags && (dev->flags ^ flags) & IFF_MULTICAST)
+ if (dev->change_rx_flags && (old_flags ^ flags) & IFF_MULTICAST)
dev->change_rx_flags(dev, IFF_MULTICAST);
dev_set_rx_mode(dev);
return -EOPNOTSUPP;
case SIOCADDMULTI:
- if (!dev->set_multicast_list ||
+ if ((!dev->set_multicast_list && !dev->set_rx_mode) ||
ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
return -EINVAL;
if (!netif_device_present(dev))
dev->addr_len, 1);
case SIOCDELMULTI:
- if (!dev->set_multicast_list ||
+ if ((!dev->set_multicast_list && !dev->set_rx_mode) ||
ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
return -EINVAL;
if (!netif_device_present(dev))
/* When net_device's are persistent, this will be fatal. */
BUG_ON(dev->reg_state != NETREG_UNINITIALIZED);
- BUG_ON(!dev->nd_net);
- net = dev->nd_net;
+ BUG_ON(!dev_net(dev));
+ net = dev_net(dev);
spin_lock_init(&dev->queue_lock);
spin_lock_init(&dev->_xmit_lock);
}
}
+ netdev_initialize_kobject(dev);
ret = netdev_register_kobject(dev);
if (ret)
goto err_uninit;
BUG_ON(strlen(name) >= sizeof(dev->name));
- /* ensure 32-byte alignment of both the device and private area */
- alloc_size = (sizeof(*dev) + NETDEV_ALIGN_CONST +
- (sizeof(struct net_device_subqueue) * (queue_count - 1))) &
- ~NETDEV_ALIGN_CONST;
- alloc_size += sizeof_priv + NETDEV_ALIGN_CONST;
+ alloc_size = sizeof(struct net_device) +
+ sizeof(struct net_device_subqueue) * (queue_count - 1);
+ if (sizeof_priv) {
+ /* ensure 32-byte alignment of private area */
+ alloc_size = (alloc_size + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST;
+ alloc_size += sizeof_priv;
+ }
+ /* ensure 32-byte alignment of whole construct */
+ alloc_size += NETDEV_ALIGN_CONST;
p = kzalloc(alloc_size, GFP_KERNEL);
if (!p) {
dev = (struct net_device *)
(((long)p + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
dev->padded = (char *)dev - (char *)p;
- dev->nd_net = &init_net;
+ dev_net_set(dev, &init_net);
if (sizeof_priv) {
dev->priv = ((char *)dev +
}
dev->egress_subqueue_count = queue_count;
+ dev->gso_max_size = GSO_MAX_SIZE;
dev->get_stats = internal_stats;
netpoll_netdev_init(dev);
*/
void free_netdev(struct net_device *dev)
{
+ release_net(dev_net(dev));
+
/* Compatibility with error handling in drivers */
if (dev->reg_state == NETREG_UNINITIALIZED) {
kfree((char *)dev - dev->padded);
/* Get out if there is nothing todo */
err = 0;
- if (dev->nd_net == net)
+ if (net_eq(dev_net(dev), net))
goto out;
/* Pick the destination device name, and ensure
dev_addr_discard(dev);
/* Actually switch the network namespace */
- dev->nd_net = net;
+ dev_net_set(dev, net);
/* Assign the new device name */
if (destname != dev->name)
}
/* Fixup kobjects */
- err = device_rename(&dev->dev, dev->name);
+ netdev_unregister_kobject(dev);
+ err = netdev_register_kobject(dev);
WARN_ON(err);
/* Add the device back in the hashes */
spin_lock(&net_dma->lock);
switch (state) {
case DMA_RESOURCE_AVAILABLE:
- for (i = 0; i < NR_CPUS; i++)
+ for (i = 0; i < nr_cpu_ids; i++)
if (net_dma->channels[i] == chan) {
found = 1;
break;
}
break;
case DMA_RESOURCE_REMOVED:
- for (i = 0; i < NR_CPUS; i++)
+ for (i = 0; i < nr_cpu_ids; i++)
if (net_dma->channels[i] == chan) {
found = 1;
pos = i;
*/
static int __init netdev_dma_register(void)
{
+ net_dma.channels = kzalloc(nr_cpu_ids * sizeof(struct net_dma),
+ GFP_KERNEL);
+ if (unlikely(!net_dma.channels)) {
+ printk(KERN_NOTICE
+ "netdev_dma: no memory for net_dma.channels\n");
+ return -ENOMEM;
+ }
spin_lock_init(&net_dma.lock);
dma_cap_set(DMA_MEMCPY, net_dma.client.cap_mask);
dma_async_client_register(&net_dma.client);
rtnl_lock();
for_each_netdev_safe(net, dev, next) {
int err;
+ char fb_name[IFNAMSIZ];
/* Ignore unmoveable devices (i.e. loopback) */
if (dev->features & NETIF_F_NETNS_LOCAL)
continue;
/* Push remaing network devices to init_net */
- err = dev_change_net_namespace(dev, &init_net, "dev%d");
+ snprintf(fb_name, IFNAMSIZ, "dev%d", dev->ifindex);
+ err = dev_change_net_namespace(dev, &init_net, fb_name);
if (err) {
- printk(KERN_WARNING "%s: failed to move %s to init_net: %d\n",
+ printk(KERN_EMERG "%s: failed to move %s to init_net: %d\n",
__func__, dev->name, err);
- unregister_netdevice(dev);
+ BUG();
}
}
rtnl_unlock();
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff