#ifdef __KERNEL__
#include <linux/timer.h>
+#include <linux/delay.h>
#include <asm/atomic.h>
#include <asm/cache.h>
#include <asm/byteorder.h>
#include <linux/device.h>
#include <linux/percpu.h>
#include <linux/dmaengine.h>
+#include <linux/workqueue.h>
+
+#include <net/net_namespace.h>
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 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
{
#define LL_RESERVED_SPACE_EXTRA(dev,extra) \
((((dev)->hard_header_len+extra)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
+struct header_ops {
+ int (*create) (struct sk_buff *skb, struct net_device *dev,
+ unsigned short type, const void *daddr,
+ const void *saddr, unsigned len);
+ int (*parse)(const struct sk_buff *skb, unsigned char *haddr);
+ int (*rebuild)(struct sk_buff *skb);
+#define HAVE_HEADER_CACHE
+ int (*cache)(const struct neighbour *neigh, struct hh_cache *hh);
+ void (*cache_update)(struct hh_cache *hh,
+ const struct net_device *dev,
+ const unsigned char *haddr);
+};
+
/* These flag bits are private to the generic network queueing
* layer, they may not be explicitly referenced by any other
* code.
__LINK_STATE_PRESENT,
__LINK_STATE_SCHED,
__LINK_STATE_NOCARRIER,
- __LINK_STATE_RX_SCHED,
__LINK_STATE_LINKWATCH_PENDING,
__LINK_STATE_DORMANT,
__LINK_STATE_QDISC_RUNNING,
extern int __init netdev_boot_setup(char *str);
/*
+ * Structure for NAPI scheduling similar to tasklet but with weighting
+ */
+struct napi_struct {
+ /* The poll_list must only be managed by the entity which
+ * changes the state of the NAPI_STATE_SCHED bit. This means
+ * whoever atomically sets that bit can add this napi_struct
+ * to the per-cpu poll_list, and whoever clears that bit
+ * can remove from the list right before clearing the bit.
+ */
+ struct list_head poll_list;
+
+ unsigned long state;
+ int weight;
+ int (*poll)(struct napi_struct *, int);
+#ifdef CONFIG_NETPOLL
+ spinlock_t poll_lock;
+ int poll_owner;
+ struct net_device *dev;
+ struct list_head dev_list;
+#endif
+};
+
+enum
+{
+ NAPI_STATE_SCHED, /* Poll is scheduled */
+ NAPI_STATE_DISABLE, /* Disable pending */
+};
+
+extern void FASTCALL(__napi_schedule(struct napi_struct *n));
+
+static inline int napi_disable_pending(struct napi_struct *n)
+{
+ return test_bit(NAPI_STATE_DISABLE, &n->state);
+}
+
+/**
+ * napi_schedule_prep - check if napi can be scheduled
+ * @n: napi context
+ *
+ * Test if NAPI routine is already running, and if not mark
+ * it as running. This is used as a condition variable
+ * insure only one NAPI poll instance runs. We also make
+ * sure there is no pending NAPI disable.
+ */
+static inline int napi_schedule_prep(struct napi_struct *n)
+{
+ return !napi_disable_pending(n) &&
+ !test_and_set_bit(NAPI_STATE_SCHED, &n->state);
+}
+
+/**
+ * napi_schedule - schedule NAPI poll
+ * @n: napi context
+ *
+ * Schedule NAPI poll routine to be called if it is not already
+ * running.
+ */
+static inline void napi_schedule(struct napi_struct *n)
+{
+ if (napi_schedule_prep(n))
+ __napi_schedule(n);
+}
+
+/* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
+static inline int napi_reschedule(struct napi_struct *napi)
+{
+ if (napi_schedule_prep(napi)) {
+ __napi_schedule(napi);
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * napi_complete - NAPI processing complete
+ * @n: napi context
+ *
+ * Mark NAPI processing as complete.
+ */
+static inline void __napi_complete(struct napi_struct *n)
+{
+ BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
+ list_del(&n->poll_list);
+ smp_mb__before_clear_bit();
+ clear_bit(NAPI_STATE_SCHED, &n->state);
+}
+
+static inline void napi_complete(struct napi_struct *n)
+{
+ local_irq_disable();
+ __napi_complete(n);
+ local_irq_enable();
+}
+
+/**
+ * napi_disable - prevent NAPI from scheduling
+ * @n: napi context
+ *
+ * Stop NAPI from being scheduled on this context.
+ * Waits till any outstanding processing completes.
+ */
+static inline void napi_disable(struct napi_struct *n)
+{
+ set_bit(NAPI_STATE_DISABLE, &n->state);
+ while (test_and_set_bit(NAPI_STATE_SCHED, &n->state))
+ msleep(1);
+ clear_bit(NAPI_STATE_DISABLE, &n->state);
+}
+
+/**
+ * napi_enable - enable NAPI scheduling
+ * @n: napi context
+ *
+ * Resume NAPI from being scheduled on this context.
+ * Must be paired with napi_disable.
+ */
+static inline void napi_enable(struct napi_struct *n)
+{
+ BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
+ smp_mb__before_clear_bit();
+ clear_bit(NAPI_STATE_SCHED, &n->state);
+}
+
+#ifdef CONFIG_SMP
+/**
+ * napi_synchronize - wait until NAPI is not running
+ * @n: napi context
+ *
+ * Wait until NAPI is done being scheduled on this context.
+ * Waits till any outstanding processing completes but
+ * does not disable future activations.
+ */
+static inline void napi_synchronize(const struct napi_struct *n)
+{
+ while (test_bit(NAPI_STATE_SCHED, &n->state))
+ msleep(1);
+}
+#else
+# define napi_synchronize(n) barrier()
+#endif
+
+/*
* The DEVICE structure.
* Actually, this whole structure is a big mistake. It mixes I/O
* data with strictly "high-level" data, and it has to know about
unsigned long state;
- struct net_device *next;
+ struct list_head dev_list;
+#ifdef CONFIG_NETPOLL
+ struct list_head napi_list;
+#endif
/* 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_FILTER 512 /* Receive filtering on VLAN */
#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
#define NETIF_F_GSO 2048 /* Enable software GSO. */
-#define NETIF_F_LLTX 4096 /* LockLess TX */
+#define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
+ /* do not use LLTX in new drivers */
+#define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
+#define NETIF_F_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */
+#define NETIF_F_LRO 32768 /* large receive offload */
/* Segmentation offload features */
#define NETIF_F_GSO_SHIFT 16
/* 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 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;
-
+#endif
const struct ethtool_ops *ethtool_ops;
+ /* Hardware header description */
+ const struct header_ops *header_ops;
+
/*
* This marks the end of the "visible" part of the structure. All
* fields hereafter are internal to the system, and may change at
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 poll_list ____cacheline_aligned_in_smp;
- /* Link to poll list */
-
- int (*poll) (struct net_device *dev, int *quota);
- int quota;
- int weight;
unsigned long last_rx; /* Time of last Rx */
/* Interface address info used in eth_type_trans() */
unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast
/* 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 */
int (*open)(struct net_device *dev);
int (*stop)(struct net_device *dev);
#define HAVE_NETDEV_POLL
- int (*hard_header) (struct sk_buff *skb,
- struct net_device *dev,
- unsigned short type,
- void *daddr,
- 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
int (*set_mac_address)(struct net_device *dev,
void *addr);
+#define HAVE_VALIDATE_ADDR
+ int (*validate_addr)(struct net_device *dev);
#define HAVE_PRIVATE_IOCTL
int (*do_ioctl)(struct net_device *dev,
struct ifreq *ifr, int cmd);
#define HAVE_SET_CONFIG
int (*set_config)(struct net_device *dev,
struct ifmap *map);
-#define HAVE_HEADER_CACHE
- int (*hard_header_cache)(struct neighbour *neigh,
- struct hh_cache *hh);
- void (*header_cache_update)(struct hh_cache *hh,
- struct net_device *dev,
- unsigned char * haddr);
#define HAVE_CHANGE_MTU
int (*change_mtu)(struct net_device *dev, int new_mtu);
void (*vlan_rx_kill_vid)(struct net_device *dev,
unsigned short vid);
- int (*hard_header_parse)(struct sk_buff *skb,
- unsigned char *haddr);
int (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
#ifdef CONFIG_NETPOLL
struct netpoll_info *npinfo;
void (*poll_controller)(struct net_device *dev);
#endif
+ /* Network namespace this network device is inside */
+ struct net *nd_net;
+
/* bridge stuff */
struct net_bridge_port *br_port;
+ /* 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[1];
};
+#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)
+/**
+ * netdev_priv - access network device private data
+ * @dev: network device
+ *
+ * Get network device private data
+ */
+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))
+
+/**
+ * netif_napi_add - initialize a napi context
+ * @dev: network device
+ * @napi: napi context
+ * @poll: polling function
+ * @weight: default weight
+ *
+ * netif_napi_add() must be used to initialize a napi context prior to calling
+ * *any* of the other napi related functions.
+ */
+static inline void netif_napi_add(struct net_device *dev,
+ struct napi_struct *napi,
+ int (*poll)(struct napi_struct *, int),
+ int weight)
+{
+ INIT_LIST_HEAD(&napi->poll_list);
+ napi->poll = poll;
+ napi->weight = weight;
+#ifdef CONFIG_NETPOLL
+ napi->dev = dev;
+ list_add(&napi->dev_list, &dev->napi_list);
+ spin_lock_init(&napi->poll_lock);
+ napi->poll_owner = -1;
+#endif
+ set_bit(NAPI_STATE_SCHED, &napi->state);
+}
struct packet_type {
__be16 type; /* This is really htons(ether_type). */
#include <linux/interrupt.h>
#include <linux/notifier.h>
-extern struct net_device loopback_dev; /* The loopback */
-extern struct net_device *dev_base; /* All devices */
extern rwlock_t dev_base_lock; /* Device list lock */
+
+#define for_each_netdev(net, d) \
+ list_for_each_entry(d, &(net)->dev_base_head, dev_list)
+#define for_each_netdev_safe(net, d, n) \
+ list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
+#define for_each_netdev_continue(net, d) \
+ list_for_each_entry_continue(d, &(net)->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;
+ struct net *net;
+
+ net = dev->nd_net;
+ lh = dev->dev_list.next;
+ return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
+}
+
+static inline struct net_device *first_net_device(struct net *net)
+{
+ return list_empty(&net->dev_base_head) ? NULL :
+ net_device_entry(net->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_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr);
+extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type);
+extern struct net_device *__dev_getfirstbyhwtype(struct net *net, 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 struct net_device *dev_get_by_flags(unsigned short flags,
+extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags,
unsigned short mask);
-extern struct net_device *dev_get_by_name(const char *name);
-extern struct net_device *__dev_get_by_name(const char *name);
+extern struct net_device *dev_get_by_name(struct net *net, const char *name);
+extern struct net_device *__dev_get_by_name(struct net *net, const char *name);
extern int dev_alloc_name(struct net_device *dev, const char *name);
extern int dev_open(struct net_device *dev);
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);
extern int unregister_netdevice_notifier(struct notifier_block *nb);
-extern int call_netdevice_notifiers(unsigned long val, void *v);
-extern struct net_device *dev_get_by_index(int ifindex);
-extern struct net_device *__dev_get_by_index(int ifindex);
+extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev);
+extern struct net_device *dev_get_by_index(struct net *net, int ifindex);
+extern struct net_device *__dev_get_by_index(struct net *net, int ifindex);
extern int dev_restart(struct net_device *dev);
#ifdef CONFIG_NETPOLL_TRAP
extern int netpoll_trap(void);
#endif
+static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type,
+ const void *daddr, const void *saddr,
+ unsigned len)
+{
+ if (!dev->header_ops || !dev->header_ops->create)
+ return 0;
+
+ return dev->header_ops->create(skb, dev, type, daddr, saddr, len);
+}
+
+static inline int dev_parse_header(const struct sk_buff *skb,
+ unsigned char *haddr)
+{
+ const struct net_device *dev = skb->dev;
+
+ if (!dev->header_ops || !dev->header_ops->parse)
+ return 0;
+ return dev->header_ops->parse(skb, haddr);
+}
+
typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
static inline int unregister_gifconf(unsigned int family)
* Incoming packets are placed on per-cpu queues so that
* no locking is needed.
*/
-
struct softnet_data
{
struct net_device *output_queue;
struct list_head poll_list;
struct sk_buff *completion_queue;
- struct net_device backlog_dev; /* Sorry. 8) */
+ struct napi_struct backlog;
#ifdef CONFIG_NET_DMA
struct dma_chan *net_dma;
#endif
__netif_schedule(dev);
}
+/**
+ * netif_start_queue - allow transmit
+ * @dev: network device
+ *
+ * Allow upper layers to call the device hard_start_xmit routine.
+ */
static inline void netif_start_queue(struct net_device *dev)
{
clear_bit(__LINK_STATE_XOFF, &dev->state);
}
+/**
+ * netif_wake_queue - restart transmit
+ * @dev: network device
+ *
+ * Allow upper layers to call the device hard_start_xmit routine.
+ * Used for flow control when transmit resources are available.
+ */
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);
}
+/**
+ * netif_stop_queue - stop transmitted packets
+ * @dev: network device
+ *
+ * Stop upper layers calling the device hard_start_xmit routine.
+ * Used for flow control when transmit resources are unavailable.
+ */
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);
}
+/**
+ * netif_queue_stopped - test if transmit queue is flowblocked
+ * @dev: network device
+ *
+ * Test if transmit queue on device is currently unable to send.
+ */
static inline int netif_queue_stopped(const struct net_device *dev)
{
return test_bit(__LINK_STATE_XOFF, &dev->state);
}
+/**
+ * netif_running - test if up
+ * @dev: network device
+ *
+ * Test if the device has been brought up.
+ */
static inline int netif_running(const struct net_device *dev)
{
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.
+ */
+
+/**
+ * netif_start_subqueue - allow sending packets on subqueue
+ * @dev: network device
+ * @queue_index: sub queue index
+ *
+ * Start individual transmit queue of a device with multiple transmit queues.
+ */
+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
+}
-/* Use this variant when it is known for sure that it
- * is executing from interrupt context.
+/**
+ * netif_stop_subqueue - stop sending packets on subqueue
+ * @dev: network device
+ * @queue_index: sub queue index
+ *
+ * Stop individual transmit queue of a device with multiple transmit queues.
*/
-static inline void dev_kfree_skb_irq(struct sk_buff *skb)
+static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
{
- if (atomic_dec_and_test(&skb->users)) {
- struct softnet_data *sd;
- unsigned long flags;
-
- local_irq_save(flags);
- sd = &__get_cpu_var(softnet_data);
- skb->next = sd->completion_queue;
- sd->completion_queue = skb;
- raise_softirq_irqoff(NET_TX_SOFTIRQ);
- local_irq_restore(flags);
- }
+#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
}
+/**
+ * netif_subqueue_stopped - test status of subqueue
+ * @dev: network device
+ * @queue_index: sub queue index
+ *
+ * Check individual transmit queue of a device with multiple transmit queues.
+ */
+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 int netif_subqueue_stopped(const struct net_device *dev,
+ struct sk_buff *skb)
+{
+ return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb));
+}
+
+/**
+ * netif_wake_subqueue - allow sending packets on subqueue
+ * @dev: network device
+ * @queue_index: sub queue index
+ *
+ * Resume individual transmit queue of a device with multiple transmit queues.
+ */
+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
+}
+
+/**
+ * netif_is_multiqueue - test if device has multiple transmit queues
+ * @dev: network device
+ *
+ * Check if device has multiple transmit queues
+ * Always falls if NETDEVICE_MULTIQUEUE is not configured
+ */
+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 void dev_kfree_skb_irq(struct sk_buff *skb);
+
/* Use this variant in places where it could be invoked
* either from interrupt or non-interrupt context.
*/
#define HAVE_NETIF_RECEIVE_SKB 1
extern int netif_receive_skb(struct sk_buff *skb);
extern int dev_valid_name(const char *name);
-extern int dev_ioctl(unsigned int cmd, void __user *);
-extern int dev_ethtool(struct ifreq *);
+extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *);
+extern int dev_ethtool(struct net *net, struct ifreq *);
extern unsigned dev_get_flags(const struct net_device *);
extern int dev_change_flags(struct net_device *, unsigned);
extern int dev_change_name(struct net_device *, char *);
+extern int dev_change_net_namespace(struct net_device *,
+ struct net *, const char *);
extern int dev_set_mtu(struct net_device *, int);
extern int dev_set_mac_address(struct net_device *,
struct sockaddr *);
extern int dev_hard_start_xmit(struct sk_buff *skb,
struct net_device *dev);
-extern void dev_init(void);
-
extern int netdev_budget;
/* Called by rtnetlink.c:rtnl_unlock() */
extern void netdev_run_todo(void);
+/**
+ * dev_put - release reference to device
+ * @dev: network device
+ *
+ * Release reference to device to allow it to be freed.
+ */
static inline void dev_put(struct net_device *dev)
{
atomic_dec(&dev->refcnt);
}
+/**
+ * dev_hold - get reference to device
+ * @dev: network device
+ *
+ * Hold reference to device to keep it from being freed.
+ */
static inline void dev_hold(struct net_device *dev)
{
atomic_inc(&dev->refcnt);
extern void linkwatch_fire_event(struct net_device *dev);
+/**
+ * netif_carrier_ok - test if carrier present
+ * @dev: network device
+ *
+ * Check if carrier is present on device
+ */
static inline int netif_carrier_ok(const struct net_device *dev)
{
return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
extern void netif_carrier_off(struct net_device *dev);
+/**
+ * netif_dormant_on - mark device as dormant.
+ * @dev: network device
+ *
+ * Mark device as dormant (as per RFC2863).
+ *
+ * The dormant state indicates that the relevant interface is not
+ * actually in a condition to pass packets (i.e., it is not 'up') but is
+ * in a "pending" state, waiting for some external event. For "on-
+ * demand" interfaces, this new state identifies the situation where the
+ * interface is waiting for events to place it in the up state.
+ *
+ */
static inline void netif_dormant_on(struct net_device *dev)
{
if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
linkwatch_fire_event(dev);
}
+/**
+ * netif_dormant_off - set device as not dormant.
+ * @dev: network device
+ *
+ * Device is not in dormant state.
+ */
static inline void netif_dormant_off(struct net_device *dev)
{
if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
linkwatch_fire_event(dev);
}
+/**
+ * netif_dormant - test if carrier present
+ * @dev: network device
+ *
+ * Check if carrier is present on device
+ */
static inline int netif_dormant(const struct net_device *dev)
{
return test_bit(__LINK_STATE_DORMANT, &dev->state);
}
+/**
+ * netif_oper_up - test if device is operational
+ * @dev: network device
+ *
+ * Check if carrier is operational
+ */
static inline int netif_oper_up(const struct net_device *dev) {
return (dev->operstate == IF_OPER_UP ||
dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
}
-/* Hot-plugging. */
+/**
+ * netif_device_present - is device available or removed
+ * @dev: network device
+ *
+ * Check if device has not been removed from system.
+ */
static inline int netif_device_present(struct net_device *dev)
{
return test_bit(__LINK_STATE_PRESENT, &dev->state);
return (1 << debug_value) - 1;
}
-/* Test if receive needs to be scheduled */
-static inline int __netif_rx_schedule_prep(struct net_device *dev)
-{
- return !test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state);
-}
-
/* Test if receive needs to be scheduled but only if up */
-static inline int netif_rx_schedule_prep(struct net_device *dev)
+static inline int netif_rx_schedule_prep(struct net_device *dev,
+ struct napi_struct *napi)
{
- return netif_running(dev) && __netif_rx_schedule_prep(dev);
+ return napi_schedule_prep(napi);
}
/* Add interface to tail of rx poll list. This assumes that _prep has
* already been called and returned 1.
*/
-
-extern void __netif_rx_schedule(struct net_device *dev);
+static inline void __netif_rx_schedule(struct net_device *dev,
+ struct napi_struct *napi)
+{
+ __napi_schedule(napi);
+}
/* Try to reschedule poll. Called by irq handler. */
-static inline void netif_rx_schedule(struct net_device *dev)
+static inline void netif_rx_schedule(struct net_device *dev,
+ struct napi_struct *napi)
{
- if (netif_rx_schedule_prep(dev))
- __netif_rx_schedule(dev);
+ if (netif_rx_schedule_prep(dev, napi))
+ __netif_rx_schedule(dev, napi);
}
-/* Try to reschedule poll. Called by dev->poll() after netif_rx_complete().
- * Do not inline this?
- */
-static inline int netif_rx_reschedule(struct net_device *dev, int undo)
+/* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). */
+static inline int netif_rx_reschedule(struct net_device *dev,
+ struct napi_struct *napi)
{
- if (netif_rx_schedule_prep(dev)) {
- unsigned long flags;
-
- dev->quota += undo;
-
- local_irq_save(flags);
- list_add_tail(&dev->poll_list, &__get_cpu_var(softnet_data).poll_list);
- __raise_softirq_irqoff(NET_RX_SOFTIRQ);
- local_irq_restore(flags);
+ if (napi_schedule_prep(napi)) {
+ __netif_rx_schedule(dev, napi);
return 1;
}
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,
+ struct napi_struct *napi)
+{
+ __napi_complete(napi);
+}
+
/* 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
* moment, it is BUG().
*/
-static inline void netif_rx_complete(struct net_device *dev)
+static inline void netif_rx_complete(struct net_device *dev,
+ struct napi_struct *napi)
{
unsigned long flags;
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, napi);
local_irq_restore(flags);
}
-static inline void netif_poll_disable(struct net_device *dev)
-{
- while (test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state))
- /* No hurry. */
- schedule_timeout_interruptible(1);
-}
-
-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
+/**
+ * netif_tx_lock - grab network device transmit lock
+ * @dev: network device
+ * @cpu: cpu number of lock owner
+ *
+ * Get network device transmit lock
*/
-static inline void __netif_rx_complete(struct net_device *dev)
+static inline void __netif_tx_lock(struct net_device *dev, int cpu)
{
- 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);
+ spin_lock(&dev->_xmit_lock);
+ dev->xmit_lock_owner = cpu;
}
static inline void netif_tx_lock(struct net_device *dev)
{
- spin_lock(&dev->_xmit_lock);
- dev->xmit_lock_owner = smp_processor_id();
+ __netif_tx_lock(dev, smp_processor_id());
}
static inline void netif_tx_lock_bh(struct net_device *dev)
spin_unlock_bh(&dev->_xmit_lock);
}
+#define HARD_TX_LOCK(dev, cpu) { \
+ if ((dev->features & NETIF_F_LLTX) == 0) { \
+ __netif_tx_lock(dev, cpu); \
+ } \
+}
+
+#define HARD_TX_UNLOCK(dev) { \
+ if ((dev->features & NETIF_F_LLTX) == 0) { \
+ netif_tx_unlock(dev); \
+ } \
+}
+
static inline void netif_tx_disable(struct net_device *dev)
{
netif_tx_lock_bh(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 void dev_mc_discard(struct net_device *dev);
+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 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_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 void netdev_features_change(struct net_device *dev);
/* Load a device via the kmod */
-extern void dev_load(const char *name);
+extern void dev_load(struct net *net, const char *name);
extern void dev_mcast_init(void);
extern int netdev_max_backlog;
extern int weight_p;
extern void linkwatch_run_queue(void);
+extern int netdev_compute_features(unsigned long all, unsigned long one);
+
static inline int net_gso_ok(int features, int gso_type)
{
int feature = gso_type << NETIF_F_GSO_SHIFT;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff