#include <linux/dmaengine.h>
#include <linux/err.h>
#include <linux/ctype.h>
+#include <linux/if_arp.h>
/*
* The list of packet types we will receive (as opposed to discard)
#define netdev_unregister_sysfs(dev) do { } while(0)
#endif
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+/*
+ * register_netdevice() inits dev->_xmit_lock and sets lockdep class
+ * according to dev->type
+ */
+static const unsigned short netdev_lock_type[] =
+ {ARPHRD_NETROM, ARPHRD_ETHER, ARPHRD_EETHER, ARPHRD_AX25,
+ ARPHRD_PRONET, ARPHRD_CHAOS, ARPHRD_IEEE802, ARPHRD_ARCNET,
+ ARPHRD_APPLETLK, ARPHRD_DLCI, ARPHRD_ATM, ARPHRD_METRICOM,
+ ARPHRD_IEEE1394, ARPHRD_EUI64, ARPHRD_INFINIBAND, ARPHRD_SLIP,
+ ARPHRD_CSLIP, ARPHRD_SLIP6, ARPHRD_CSLIP6, ARPHRD_RSRVD,
+ ARPHRD_ADAPT, ARPHRD_ROSE, ARPHRD_X25, ARPHRD_HWX25,
+ ARPHRD_PPP, ARPHRD_CISCO, ARPHRD_LAPB, ARPHRD_DDCMP,
+ ARPHRD_RAWHDLC, ARPHRD_TUNNEL, ARPHRD_TUNNEL6, ARPHRD_FRAD,
+ ARPHRD_SKIP, ARPHRD_LOOPBACK, ARPHRD_LOCALTLK, ARPHRD_FDDI,
+ ARPHRD_BIF, ARPHRD_SIT, ARPHRD_IPDDP, ARPHRD_IPGRE,
+ ARPHRD_PIMREG, ARPHRD_HIPPI, ARPHRD_ASH, ARPHRD_ECONET,
+ ARPHRD_IRDA, ARPHRD_FCPP, ARPHRD_FCAL, ARPHRD_FCPL,
+ ARPHRD_FCFABRIC, ARPHRD_IEEE802_TR, ARPHRD_IEEE80211,
+ ARPHRD_IEEE80211_PRISM, ARPHRD_IEEE80211_RADIOTAP, ARPHRD_VOID,
+ ARPHRD_NONE};
+
+static const char *netdev_lock_name[] =
+ {"_xmit_NETROM", "_xmit_ETHER", "_xmit_EETHER", "_xmit_AX25",
+ "_xmit_PRONET", "_xmit_CHAOS", "_xmit_IEEE802", "_xmit_ARCNET",
+ "_xmit_APPLETLK", "_xmit_DLCI", "_xmit_ATM", "_xmit_METRICOM",
+ "_xmit_IEEE1394", "_xmit_EUI64", "_xmit_INFINIBAND", "_xmit_SLIP",
+ "_xmit_CSLIP", "_xmit_SLIP6", "_xmit_CSLIP6", "_xmit_RSRVD",
+ "_xmit_ADAPT", "_xmit_ROSE", "_xmit_X25", "_xmit_HWX25",
+ "_xmit_PPP", "_xmit_CISCO", "_xmit_LAPB", "_xmit_DDCMP",
+ "_xmit_RAWHDLC", "_xmit_TUNNEL", "_xmit_TUNNEL6", "_xmit_FRAD",
+ "_xmit_SKIP", "_xmit_LOOPBACK", "_xmit_LOCALTLK", "_xmit_FDDI",
+ "_xmit_BIF", "_xmit_SIT", "_xmit_IPDDP", "_xmit_IPGRE",
+ "_xmit_PIMREG", "_xmit_HIPPI", "_xmit_ASH", "_xmit_ECONET",
+ "_xmit_IRDA", "_xmit_FCPP", "_xmit_FCAL", "_xmit_FCPL",
+ "_xmit_FCFABRIC", "_xmit_IEEE802_TR", "_xmit_IEEE80211",
+ "_xmit_IEEE80211_PRISM", "_xmit_IEEE80211_RADIOTAP", "_xmit_VOID",
+ "_xmit_NONE"};
+
+static struct lock_class_key netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)];
+
+static inline unsigned short netdev_lock_pos(unsigned short dev_type)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(netdev_lock_type); i++)
+ if (netdev_lock_type[i] == dev_type)
+ return i;
+ /* the last key is used by default */
+ return ARRAY_SIZE(netdev_lock_type) - 1;
+}
+
+static inline void netdev_set_lockdep_class(spinlock_t *lock,
+ unsigned short dev_type)
+{
+ int i;
+
+ i = netdev_lock_pos(dev_type);
+ lockdep_set_class_and_name(lock, &netdev_xmit_lock_key[i],
+ netdev_lock_name[i]);
+}
+#else
+static inline void netdev_set_lockdep_class(spinlock_t *lock,
+ unsigned short dev_type)
+{
+}
+#endif
/*******************************************************************************
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)))
+ 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;
}
}
}
out:
+ local_irq_enable();
#ifdef CONFIG_NET_DMA
/*
* There may not be any more sk_buffs coming right now, so push
rcu_read_unlock();
}
#endif
- local_irq_enable();
return;
softnet_break:
dev_mc_upload(dev);
}
+int __dev_addr_delete(struct dev_addr_list **list, void *addr, int alen,
+ int glbl)
+{
+ struct dev_addr_list *da;
+
+ for (; (da = *list) != NULL; list = &da->next) {
+ if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
+ alen == da->da_addrlen) {
+ if (glbl) {
+ int old_glbl = da->da_gusers;
+ da->da_gusers = 0;
+ if (old_glbl == 0)
+ break;
+ }
+ if (--da->da_users)
+ return 0;
+
+ *list = da->next;
+ kfree(da);
+ return 0;
+ }
+ }
+ return -ENOENT;
+}
+
+int __dev_addr_add(struct dev_addr_list **list, void *addr, int alen, int glbl)
+{
+ struct dev_addr_list *da;
+
+ for (da = *list; da != NULL; da = da->next) {
+ if (memcmp(da->da_addr, addr, da->da_addrlen) == 0 &&
+ da->da_addrlen == alen) {
+ if (glbl) {
+ int old_glbl = da->da_gusers;
+ da->da_gusers = 1;
+ if (old_glbl)
+ return 0;
+ }
+ da->da_users++;
+ return 0;
+ }
+ }
+
+ da = kmalloc(sizeof(*da), GFP_ATOMIC);
+ if (da == NULL)
+ return -ENOMEM;
+ memcpy(da->da_addr, addr, alen);
+ da->da_addrlen = alen;
+ da->da_users = 1;
+ da->da_gusers = glbl ? 1 : 0;
+ da->next = *list;
+ *list = da;
+ return 0;
+}
+
+void __dev_addr_discard(struct dev_addr_list **list)
+{
+ struct dev_addr_list *tmp;
+
+ while (*list != NULL) {
+ tmp = *list;
+ *list = tmp->next;
+ if (tmp->da_users > tmp->da_gusers)
+ printk("__dev_addr_discard: address leakage! "
+ "da_users=%d\n", tmp->da_users);
+ kfree(tmp);
+ }
+}
+
unsigned dev_get_flags(const struct net_device *dev)
{
unsigned flags;
int dev_change_flags(struct net_device *dev, unsigned flags)
{
- int ret;
+ int ret, changes;
int old_flags = dev->flags;
/*
dev_set_allmulti(dev, inc);
}
- if (old_flags ^ dev->flags)
- rtmsg_ifinfo(RTM_NEWLINK, dev, old_flags ^ dev->flags);
+ /* Exclude state transition flags, already notified */
+ changes = (old_flags ^ dev->flags) & ~(IFF_UP | IFF_RUNNING);
+ if (changes)
+ rtmsg_ifinfo(RTM_NEWLINK, dev, changes);
return ret;
}
spin_lock_init(&dev->queue_lock);
spin_lock_init(&dev->_xmit_lock);
+ netdev_set_lockdep_class(&dev->_xmit_lock, dev->type);
dev->xmit_lock_owner = -1;
spin_lock_init(&dev->ingress_lock);
}
}
+ /* Fix illegal checksum combinations */
+ if ((dev->features & NETIF_F_HW_CSUM) &&
+ (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) {
+ printk(KERN_NOTICE "%s: mixed HW and IP checksum settings.\n",
+ dev->name);
+ dev->features &= ~(NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM);
+ }
+
+ if ((dev->features & NETIF_F_NO_CSUM) &&
+ (dev->features & (NETIF_F_HW_CSUM|NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) {
+ printk(KERN_NOTICE "%s: mixed no checksumming and other settings.\n",
+ dev->name);
+ dev->features &= ~(NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM|NETIF_F_HW_CSUM);
+ }
+
+
/* Fix illegal SG+CSUM combinations. */
if ((dev->features & NETIF_F_SG) &&
!(dev->features & NETIF_F_ALL_CSUM)) {
continue;
}
- netdev_unregister_sysfs(dev);
dev->reg_state = NETREG_UNREGISTERED;
netdev_wait_allrefs(dev);
BUG_TRAP(!dev->ip6_ptr);
BUG_TRAP(!dev->dn_ptr);
- /* It must be the very last action,
- * after this 'dev' may point to freed up memory.
- */
if (dev->destructor)
dev->destructor(dev);
+
+ /* Free network device */
+ kobject_put(&dev->dev.kobj);
}
out:
/* Notifier chain MUST detach us from master device. */
BUG_TRAP(!dev->master);
+ /* Remove entries from sysfs */
+ netdev_unregister_sysfs(dev);
+
/* Finish processing unregister after unlock */
net_set_todo(dev);
unsigned int cpu, oldcpu = (unsigned long)ocpu;
struct softnet_data *sd, *oldsd;
- if (action != CPU_DEAD)
+ if (action != CPU_DEAD && action != CPU_DEAD_FROZEN)
return NOTIFY_OK;
local_irq_disable();
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff