#include <linux/if_packet.h>
#ifdef __KERNEL__
+#include <linux/timer.h>
#include <asm/atomic.h>
#include <asm/cache.h>
#include <asm/byteorder.h>
-#include <linux/config.h>
#include <linux/device.h>
#include <linux/percpu.h>
#include <linux/dmaengine.h>
-struct divert_blk;
struct vlan_group;
struct ethtool_ops;
struct netpoll_info;
+/* 802.11 specific */
+struct wireless_dev;
/* source back-compat hooks */
#define SET_ETHTOOL_OPS(netdev,ops) \
( (netdev)->ethtool_ops = (ops) )
#define NET_RX_CN_HIGH 4 /* The storm is here */
#define NET_RX_BAD 5 /* packet dropped due to kernel error */
+/* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
+ * indicates that the device will soon be dropping packets, or already drops
+ * some packets of the same priority; prompting us to send less aggressively. */
+#define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e))
#define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
#endif
#endif
#endif
-#if !defined(CONFIG_NET_IPIP) && \
- !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE)
+#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
+ !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
+ !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
+ !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
#define MAX_HEADER LL_MAX_HEADER
#else
#define MAX_HEADER (LL_MAX_HEADER + 48)
#endif
+struct net_device_subqueue
+{
+ /* Give a control state for each queue. This struct may contain
+ * per-queue locks in the future.
+ */
+ unsigned long state;
+};
+
/*
* Network device statistics. Akin to the 2.0 ether stats but
* with byte counters.
DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);
+struct dev_addr_list
+{
+ struct dev_addr_list *next;
+ u8 da_addr[MAX_ADDR_LEN];
+ u8 da_addrlen;
+ u8 da_synced;
+ int da_users;
+ int da_gusers;
+};
/*
* We tag multicasts with these structures.
*/
-
-struct dev_mc_list
-{
- struct dev_mc_list *next;
- __u8 dmi_addr[MAX_ADDR_LEN];
- unsigned char dmi_addrlen;
- int dmi_users;
- int dmi_gusers;
-};
+
+#define dev_mc_list dev_addr_list
+#define dmi_addr da_addr
+#define dmi_addrlen da_addrlen
+#define dmi_users da_users
+#define dmi_gusers da_gusers
struct hh_cache
{
struct hh_cache *hh_next; /* Next entry */
atomic_t hh_refcnt; /* number of users */
- unsigned short hh_type; /* protocol identifier, f.e ETH_P_IP
+/*
+ * We want hh_output, hh_len, hh_lock and hh_data be a in a separate
+ * cache line on SMP.
+ * They are mostly read, but hh_refcnt may be changed quite frequently,
+ * incurring cache line ping pongs.
+ */
+ __be16 hh_type ____cacheline_aligned_in_smp;
+ /* protocol identifier, f.e ETH_P_IP
* NOTE: For VLANs, this will be the
* encapuslated type. --BLG
*/
- int hh_len; /* length of header */
+ u16 hh_len; /* length of header */
int (*hh_output)(struct sk_buff *skb);
- rwlock_t hh_lock;
+ seqlock_t hh_lock;
/* cached hardware header; allow for machine alignment needs. */
#define HH_DATA_MOD 16
__LINK_STATE_RX_SCHED,
__LINK_STATE_LINKWATCH_PENDING,
__LINK_STATE_DORMANT,
+ __LINK_STATE_QDISC_RUNNING,
+ /* Set by the netpoll NAPI code */
+ __LINK_STATE_POLL_LIST_FROZEN,
};
unsigned long state;
- struct net_device *next;
+ struct list_head dev_list;
/* The device initialization function. Called only once. */
int (*init)(struct net_device *dev);
/* Net device features */
unsigned long features;
#define NETIF_F_SG 1 /* Scatter/gather IO. */
-#define NETIF_F_IP_CSUM 2 /* Can checksum only TCP/UDP over IPv4. */
+#define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
#define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
#define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
+#define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
#define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
#define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
#define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
#define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
#define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
-#define NETIF_F_TSO 2048 /* Can offload TCP/IP segmentation */
+#define NETIF_F_GSO 2048 /* Enable software GSO. */
#define NETIF_F_LLTX 4096 /* LockLess TX */
-#define NETIF_F_UFO 8192 /* Can offload UDP Large Send*/
+#define NETIF_F_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */
+
+ /* Segmentation offload features */
+#define NETIF_F_GSO_SHIFT 16
+#define NETIF_F_GSO_MASK 0xffff0000
+#define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
+#define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
+#define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
+#define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
+#define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
+
+ /* List of features with software fallbacks. */
+#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
+
#define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
-#define NETIF_F_ALL_CSUM (NETIF_F_IP_CSUM | NETIF_F_GEN_CSUM)
+#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
+#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
+#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
struct net_device *next_sched;
struct net_device_stats* (*get_stats)(struct net_device *dev);
- struct iw_statistics* (*get_wireless_stats)(struct net_device *dev);
+ struct net_device_stats stats;
+#ifdef CONFIG_WIRELESS_EXT
/* List of functions to handle Wireless Extensions (instead of ioctl).
* See <net/iw_handler.h> for details. Jean II */
const struct iw_handler_def * wireless_handlers;
/* Instance data managed by the core of Wireless Extensions. */
struct iw_public_data * wireless_data;
-
- struct ethtool_ops *ethtool_ops;
+#endif
+ const struct ethtool_ops *ethtool_ops;
/*
* This marks the end of the "visible" part of the structure. All
unsigned char addr_len; /* hardware address length */
unsigned short dev_id; /* for shared network cards */
- struct dev_mc_list *mc_list; /* Multicast mac addresses */
+ struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */
+ int uc_count; /* Number of installed ucasts */
+ int uc_promisc;
+ struct dev_addr_list *mc_list; /* Multicast mac addresses */
int mc_count; /* Number of installed mcasts */
int promiscuity;
int allmulti;
void *ip6_ptr; /* IPv6 specific data */
void *ec_ptr; /* Econet specific data */
void *ax25_ptr; /* AX.25 specific data */
+ struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
+ assign before registering */
/*
* Cache line mostly used on receive path (including eth_type_trans())
struct list_head qdisc_list;
unsigned long tx_queue_len; /* Max frames per queue allowed */
+ /* Partially transmitted GSO packet. */
+ struct sk_buff *gso_skb;
+
/* ingress path synchronizer */
spinlock_t ingress_lock;
struct Qdisc *qdisc_ingress;
/* device index hash chain */
struct hlist_node index_hlist;
+ struct net_device *link_watch_next;
+
/* register/unregister state machine */
enum { NETREG_UNINITIALIZED=0,
NETREG_REGISTERED, /* completed register_netdevice */
void *saddr,
unsigned len);
int (*rebuild_header)(struct sk_buff *skb);
+#define HAVE_CHANGE_RX_FLAGS
+ void (*change_rx_flags)(struct net_device *dev,
+ int flags);
+#define HAVE_SET_RX_MODE
+ void (*set_rx_mode)(struct net_device *dev);
#define HAVE_MULTICAST
void (*set_multicast_list)(struct net_device *dev);
#define HAVE_SET_MAC_ADDR
/* bridge stuff */
struct net_bridge_port *br_port;
-
-#ifdef CONFIG_NET_DIVERT
- /* this will get initialized at each interface type init routine */
- struct divert_blk *divert;
-#endif /* CONFIG_NET_DIVERT */
+ /* macvlan */
+ struct macvlan_port *macvlan_port;
/* class/net/name entry */
- struct class_device class_dev;
+ struct device dev;
/* space for optional statistics and wireless sysfs groups */
struct attribute_group *sysfs_groups[3];
+
+ /* rtnetlink link ops */
+ const struct rtnl_link_ops *rtnl_link_ops;
+
+ /* The TX queue control structures */
+ unsigned int egress_subqueue_count;
+ struct net_device_subqueue egress_subqueue[0];
};
+#define to_net_dev(d) container_of(d, struct net_device, dev)
#define NETDEV_ALIGN 32
#define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1)
-static inline void *netdev_priv(struct net_device *dev)
+static inline void *netdev_priv(const struct net_device *dev)
{
- return (char *)dev + ((sizeof(struct net_device)
- + NETDEV_ALIGN_CONST)
- & ~NETDEV_ALIGN_CONST);
+ return dev->priv;
}
#define SET_MODULE_OWNER(dev) do { } while (0)
/* Set the sysfs physical device reference for the network logical device
* if set prior to registration will cause a symlink during initialization.
*/
-#define SET_NETDEV_DEV(net, pdev) ((net)->class_dev.dev = (pdev))
+#define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
struct packet_type {
__be16 type; /* This is really htons(ether_type). */
struct net_device *,
struct packet_type *,
struct net_device *);
+ struct sk_buff *(*gso_segment)(struct sk_buff *skb,
+ int features);
+ int (*gso_send_check)(struct sk_buff *skb);
void *af_packet_priv;
struct list_head list;
};
#include <linux/notifier.h>
extern struct net_device loopback_dev; /* The loopback */
-extern struct net_device *dev_base; /* All devices */
+extern struct list_head dev_base_head; /* All devices */
extern rwlock_t dev_base_lock; /* Device list lock */
+#define for_each_netdev(d) \
+ list_for_each_entry(d, &dev_base_head, dev_list)
+#define for_each_netdev_safe(d, n) \
+ list_for_each_entry_safe(d, n, &dev_base_head, dev_list)
+#define for_each_netdev_continue(d) \
+ list_for_each_entry_continue(d, &dev_base_head, dev_list)
+#define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
+
+static inline struct net_device *next_net_device(struct net_device *dev)
+{
+ struct list_head *lh;
+
+ lh = dev->dev_list.next;
+ return lh == &dev_base_head ? NULL : net_device_entry(lh);
+}
+
+static inline struct net_device *first_net_device(void)
+{
+ return list_empty(&dev_base_head) ? NULL :
+ net_device_entry(dev_base_head.next);
+}
+
extern int netdev_boot_setup_check(struct net_device *dev);
extern unsigned long netdev_boot_base(const char *prefix, int unit);
extern struct net_device *dev_getbyhwaddr(unsigned short type, char *hwaddr);
extern struct net_device *dev_getfirstbyhwtype(unsigned short type);
+extern struct net_device *__dev_getfirstbyhwtype(unsigned short type);
extern void dev_add_pack(struct packet_type *pt);
extern void dev_remove_pack(struct packet_type *pt);
extern void __dev_remove_pack(struct packet_type *pt);
extern int dev_close(struct net_device *dev);
extern int dev_queue_xmit(struct sk_buff *skb);
extern int register_netdevice(struct net_device *dev);
-extern int unregister_netdevice(struct net_device *dev);
+extern void unregister_netdevice(struct net_device *dev);
extern void free_netdev(struct net_device *dev);
extern void synchronize_net(void);
extern int register_netdevice_notifier(struct notifier_block *nb);
static inline void netif_wake_queue(struct net_device *dev)
{
#ifdef CONFIG_NETPOLL_TRAP
- if (netpoll_trap())
+ if (netpoll_trap()) {
+ clear_bit(__LINK_STATE_XOFF, &dev->state);
return;
+ }
#endif
if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state))
__netif_schedule(dev);
static inline void netif_stop_queue(struct net_device *dev)
{
-#ifdef CONFIG_NETPOLL_TRAP
- if (netpoll_trap())
- return;
-#endif
set_bit(__LINK_STATE_XOFF, &dev->state);
}
return test_bit(__LINK_STATE_START, &dev->state);
}
+/*
+ * Routines to manage the subqueues on a device. We only need start
+ * stop, and a check if it's stopped. All other device management is
+ * done at the overall netdevice level.
+ * Also test the device if we're multiqueue.
+ */
+static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ clear_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
+#endif
+}
+
+static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+#ifdef CONFIG_NETPOLL_TRAP
+ if (netpoll_trap())
+ return;
+#endif
+ set_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
+#endif
+}
+
+static inline int netif_subqueue_stopped(const struct net_device *dev,
+ u16 queue_index)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ return test_bit(__LINK_STATE_XOFF,
+ &dev->egress_subqueue[queue_index].state);
+#else
+ return 0;
+#endif
+}
+
+static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+#ifdef CONFIG_NETPOLL_TRAP
+ if (netpoll_trap())
+ return;
+#endif
+ if (test_and_clear_bit(__LINK_STATE_XOFF,
+ &dev->egress_subqueue[queue_index].state))
+ __netif_schedule(dev);
+#endif
+}
+
+static inline int netif_is_multiqueue(const struct net_device *dev)
+{
+#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ return (!!(NETIF_F_MULTI_QUEUE & dev->features));
+#else
+ return 0;
+#endif
+}
/* Use this variant when it is known for sure that it
* is executing from interrupt context.
extern int dev_set_mtu(struct net_device *, int);
extern int dev_set_mac_address(struct net_device *,
struct sockaddr *);
-extern void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev);
+extern int dev_hard_start_xmit(struct sk_buff *skb,
+ struct net_device *dev);
extern void dev_init(void);
-extern int netdev_nit;
extern int netdev_budget;
/* Called by rtnetlink.c:rtnl_unlock() */
return 0;
}
+/* same as netif_rx_complete, except that local_irq_save(flags)
+ * has already been issued
+ */
+static inline void __netif_rx_complete(struct net_device *dev)
+{
+ BUG_ON(!test_bit(__LINK_STATE_RX_SCHED, &dev->state));
+ list_del(&dev->poll_list);
+ smp_mb__before_clear_bit();
+ clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
+}
+
/* Remove interface from poll list: it must be in the poll list
* on current cpu. This primitive is called by dev->poll(), when
* it completes the work. The device cannot be out of poll list at this
{
unsigned long flags;
+#ifdef CONFIG_NETPOLL
+ /* Prevent race with netpoll - yes, this is a kludge.
+ * But at least it doesn't penalize the non-netpoll
+ * code path. */
+ if (test_bit(__LINK_STATE_POLL_LIST_FROZEN, &dev->state))
+ return;
+#endif
+
local_irq_save(flags);
- BUG_ON(!test_bit(__LINK_STATE_RX_SCHED, &dev->state));
- list_del(&dev->poll_list);
- smp_mb__before_clear_bit();
- clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
+ __netif_rx_complete(dev);
local_irq_restore(flags);
}
static inline void netif_poll_enable(struct net_device *dev)
{
- clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
-}
-
-/* same as netif_rx_complete, except that local_irq_save(flags)
- * has already been issued
- */
-static inline void __netif_rx_complete(struct net_device *dev)
-{
- BUG_ON(!test_bit(__LINK_STATE_RX_SCHED, &dev->state));
- list_del(&dev->poll_list);
smp_mb__before_clear_bit();
clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
}
static inline int netif_tx_trylock(struct net_device *dev)
{
- int err = spin_trylock(&dev->_xmit_lock);
- if (!err)
+ int ok = spin_trylock(&dev->_xmit_lock);
+ if (likely(ok))
dev->xmit_lock_owner = smp_processor_id();
- return err;
+ return ok;
}
static inline void netif_tx_unlock(struct net_device *dev)
extern void ether_setup(struct net_device *dev);
/* Support for loadable net-drivers */
-extern struct net_device *alloc_netdev(int sizeof_priv, const char *name,
- void (*setup)(struct net_device *));
+extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
+ void (*setup)(struct net_device *),
+ unsigned int queue_count);
+#define alloc_netdev(sizeof_priv, name, setup) \
+ alloc_netdev_mq(sizeof_priv, name, setup, 1)
extern int register_netdev(struct net_device *dev);
extern void unregister_netdev(struct net_device *dev);
-/* Functions used for multicast support */
-extern void dev_mc_upload(struct net_device *dev);
+/* Functions used for secondary unicast and multicast support */
+extern void dev_set_rx_mode(struct net_device *dev);
+extern void __dev_set_rx_mode(struct net_device *dev);
+extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen);
+extern int dev_unicast_add(struct net_device *dev, void *addr, int alen);
extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
+extern int dev_mc_sync(struct net_device *to, struct net_device *from);
+extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
extern void dev_mc_discard(struct net_device *dev);
+extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all);
+extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
+extern void __dev_addr_discard(struct dev_addr_list **list);
extern void dev_set_promiscuity(struct net_device *dev, int inc);
extern void dev_set_allmulti(struct net_device *dev, int inc);
extern void netdev_state_change(struct net_device *dev);
extern int netdev_max_backlog;
extern int weight_p;
extern int netdev_set_master(struct net_device *dev, struct net_device *master);
-extern int skb_checksum_help(struct sk_buff *skb, int inward);
+extern int skb_checksum_help(struct sk_buff *skb);
+extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
#ifdef CONFIG_BUG
extern void netdev_rx_csum_fault(struct net_device *dev);
#else
extern void linkwatch_run_queue(void);
+static inline int net_gso_ok(int features, int gso_type)
+{
+ int feature = gso_type << NETIF_F_GSO_SHIFT;
+ return (features & feature) == feature;
+}
+
+static inline int skb_gso_ok(struct sk_buff *skb, int features)
+{
+ return net_gso_ok(features, skb_shinfo(skb)->gso_type);
+}
+
+static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
+{
+ return skb_is_gso(skb) &&
+ (!skb_gso_ok(skb, dev->features) ||
+ unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
+}
+
+/* On bonding slaves other than the currently active slave, suppress
+ * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
+ * ARP on active-backup slaves with arp_validate enabled.
+ */
+static inline int skb_bond_should_drop(struct sk_buff *skb)
+{
+ struct net_device *dev = skb->dev;
+ struct net_device *master = dev->master;
+
+ if (master &&
+ (dev->priv_flags & IFF_SLAVE_INACTIVE)) {
+ if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
+ skb->protocol == __constant_htons(ETH_P_ARP))
+ return 0;
+
+ if (master->priv_flags & IFF_MASTER_ALB) {
+ if (skb->pkt_type != PACKET_BROADCAST &&
+ skb->pkt_type != PACKET_MULTICAST)
+ return 0;
+ }
+ if (master->priv_flags & IFF_MASTER_8023AD &&
+ skb->protocol == __constant_htons(ETH_P_SLOW))
+ return 0;
+
+ return 1;
+ }
+ return 0;
+}
+
#endif /* __KERNEL__ */
#endif /* _LINUX_DEV_H */
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