* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
* Corey Minyard <wf-rch!minyard@relay.EU.net>
* Donald J. Becker, <becker@cesdis.gsfc.nasa.gov>
- * Alan Cox, <Alan.Cox@linux.org>
+ * Alan Cox, <alan@lxorguk.ukuu.org.uk>
* Bjorn Ekwall. <bj0rn@blox.se>
* Pekka Riikonen <priikone@poseidon.pspt.fi>
*
#include <linux/workqueue.h>
#include <net/net_namespace.h>
+#include <net/dsa.h>
struct vlan_group;
struct ethtool_ops;
#define NET_XMIT_DROP 1 /* skb dropped */
#define NET_XMIT_CN 2 /* congestion notification */
#define NET_XMIT_POLICED 3 /* skb is shot by police */
-#define NET_XMIT_BYPASS 4 /* packet does not leave via dequeue;
- (TC use only - dev_queue_xmit
- returns this as NET_XMIT_SUCCESS) */
+#define NET_XMIT_MASK 0xFFFF /* qdisc flags in net/sch_generic.h */
/* Backlog congestion levels */
#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
#endif /* __KERNEL__ */
-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.
enum netdev_state_t
{
- __LINK_STATE_XOFF=0,
__LINK_STATE_START,
__LINK_STATE_PRESENT,
- __LINK_STATE_SCHED,
__LINK_STATE_NOCARRIER,
__LINK_STATE_LINKWATCH_PENDING,
__LINK_STATE_DORMANT,
- __LINK_STATE_QDISC_RUNNING,
};
# define napi_synchronize(n) barrier()
#endif
+enum netdev_queue_state_t
+{
+ __QUEUE_STATE_XOFF,
+ __QUEUE_STATE_FROZEN,
+};
+
+struct netdev_queue {
+ struct net_device *dev;
+ struct Qdisc *qdisc;
+ unsigned long state;
+ spinlock_t _xmit_lock;
+ int xmit_lock_owner;
+ struct Qdisc *qdisc_sleeping;
+} ____cacheline_aligned_in_smp;
+
/*
* The DEVICE structure.
* Actually, this whole structure is a big mistake. It mixes I/O
char name[IFNAMSIZ];
/* device name hash chain */
struct hlist_node name_hlist;
+ /* snmp alias */
+ char *ifalias;
/*
* I/O specific fields
#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_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;
-
/* Interface index. Unique device identifier */
int ifindex;
int iflink;
unsigned char addr_len; /* hardware address length */
unsigned short dev_id; /* for shared network cards */
+ spinlock_t addr_list_lock;
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;
+ unsigned int promiscuity;
+ unsigned int allmulti;
/* Protocol specific pointers */
+#ifdef CONFIG_NET_DSA
+ void *dsa_ptr; /* dsa specific data */
+#endif
void *atalk_ptr; /* AppleTalk link */
void *ip_ptr; /* IPv4 specific data */
void *dn_ptr; /* DECnet specific data */
unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
- /* ingress path synchronizer */
- spinlock_t ingress_lock;
- struct Qdisc *qdisc_ingress;
+ struct netdev_queue rx_queue;
-/*
- * Cache line mostly used on queue transmit path (qdisc)
- */
- /* device queue lock */
- spinlock_t queue_lock ____cacheline_aligned_in_smp;
- struct Qdisc *qdisc;
- struct Qdisc *qdisc_sleeping;
- struct list_head qdisc_list;
- unsigned long tx_queue_len; /* Max frames per queue allowed */
+ struct netdev_queue *_tx ____cacheline_aligned_in_smp;
+
+ /* Number of TX queues allocated at alloc_netdev_mq() time */
+ unsigned int num_tx_queues;
- /* Partially transmitted GSO packet. */
- struct sk_buff *gso_skb;
+ /* Number of TX queues currently active in device */
+ unsigned int real_num_tx_queues;
+ unsigned long tx_queue_len; /* Max frames per queue allowed */
+ spinlock_t tx_global_lock;
/*
* One part is mostly used on xmit path (device)
*/
- /* hard_start_xmit synchronizer */
- spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
- /* cpu id of processor entered to hard_start_xmit or -1,
- if nobody entered there.
- */
- int xmit_lock_owner;
void *priv; /* pointer to private data */
int (*hard_start_xmit) (struct sk_buff *skb,
struct net_device *dev);
void (*poll_controller)(struct net_device *dev);
#endif
+ u16 (*select_queue)(struct net_device *dev,
+ struct sk_buff *skb);
+
#ifdef CONFIG_NET_NS
/* Network namespace this network device is inside */
struct net *nd_net;
struct net_bridge_port *br_port;
/* macvlan */
struct macvlan_port *macvlan_port;
+ /* GARP */
+ struct garp_port *garp_port;
/* class/net/name entry */
struct device dev;
/* for setting kernel sock attribute on TCP connection setup */
#define GSO_MAX_SIZE 65536
unsigned int gso_max_size;
-
- /* 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
+struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev,
+ unsigned int index)
+{
+ return &dev->_tx[index];
+}
+
+static inline void netdev_for_each_tx_queue(struct net_device *dev,
+ void (*f)(struct net_device *,
+ struct netdev_queue *,
+ void *),
+ void *arg)
+{
+ unsigned int i;
+
+ for (i = 0; i < dev->num_tx_queues; i++)
+ f(dev, &dev->_tx[i], arg);
+}
+
/*
* Net namespace inlines
*/
#endif
}
+static inline bool netdev_uses_dsa_tags(struct net_device *dev)
+{
+#ifdef CONFIG_NET_DSA_TAG_DSA
+ if (dev->dsa_ptr != NULL)
+ return dsa_uses_dsa_tags(dev->dsa_ptr);
+#endif
+
+ return 0;
+}
+
+static inline bool netdev_uses_trailer_tags(struct net_device *dev)
+{
+#ifdef CONFIG_NET_DSA_TAG_TRAILER
+ if (dev->dsa_ptr != NULL)
+ return dsa_uses_trailer_tags(dev->dsa_ptr);
+#endif
+
+ return 0;
+}
+
/**
* netdev_priv - access network device private data
* @dev: network device
*/
static inline void *netdev_priv(const struct net_device *dev)
{
- return dev->priv;
+ return (char *)dev + ((sizeof(struct net_device)
+ + NETDEV_ALIGN_CONST)
+ & ~NETDEV_ALIGN_CONST);
}
/* Set the sysfs physical device reference for the network logical device
set_bit(NAPI_STATE_SCHED, &napi->state);
}
+/**
+ * netif_napi_del - remove a napi context
+ * @napi: napi context
+ *
+ * netif_napi_del() removes a napi context from the network device napi list
+ */
+static inline void netif_napi_del(struct napi_struct *napi)
+{
+#ifdef CONFIG_NETPOLL
+ list_del(&napi->dev_list);
+#endif
+}
+
struct packet_type {
__be16 type; /* This is really htons(ether_type). */
struct net_device *dev; /* NULL is wildcarded here */
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 void dev_disable_lro(struct net_device *dev);
extern int dev_queue_xmit(struct sk_buff *skb);
extern int register_netdevice(struct net_device *dev);
extern void unregister_netdevice(struct net_device *dev);
*/
struct softnet_data
{
- struct net_device *output_queue;
+ struct Qdisc *output_queue;
struct sk_buff_head input_pkt_queue;
struct list_head poll_list;
struct sk_buff *completion_queue;
#define HAVE_NETIF_QUEUE
-extern void __netif_schedule(struct net_device *dev);
+extern void __netif_schedule(struct Qdisc *q);
+
+static inline void netif_schedule_queue(struct netdev_queue *txq)
+{
+ if (!test_bit(__QUEUE_STATE_XOFF, &txq->state))
+ __netif_schedule(txq->qdisc);
+}
+
+static inline void netif_tx_schedule_all(struct net_device *dev)
+{
+ unsigned int i;
-static inline void netif_schedule(struct net_device *dev)
+ for (i = 0; i < dev->num_tx_queues; i++)
+ netif_schedule_queue(netdev_get_tx_queue(dev, i));
+}
+
+static inline void netif_tx_start_queue(struct netdev_queue *dev_queue)
{
- if (!test_bit(__LINK_STATE_XOFF, &dev->state))
- __netif_schedule(dev);
+ clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
}
/**
*/
static inline void netif_start_queue(struct net_device *dev)
{
- clear_bit(__LINK_STATE_XOFF, &dev->state);
+ netif_tx_start_queue(netdev_get_tx_queue(dev, 0));
+}
+
+static inline void netif_tx_start_all_queues(struct net_device *dev)
+{
+ unsigned int i;
+
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
+ netif_tx_start_queue(txq);
+ }
+}
+
+static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue)
+{
+#ifdef CONFIG_NETPOLL_TRAP
+ if (netpoll_trap()) {
+ clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
+ return;
+ }
+#endif
+ if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state))
+ __netif_schedule(dev_queue->qdisc);
}
/**
*/
static inline void netif_wake_queue(struct net_device *dev)
{
-#ifdef CONFIG_NETPOLL_TRAP
- if (netpoll_trap()) {
- clear_bit(__LINK_STATE_XOFF, &dev->state);
- return;
+ netif_tx_wake_queue(netdev_get_tx_queue(dev, 0));
+}
+
+static inline void netif_tx_wake_all_queues(struct net_device *dev)
+{
+ unsigned int i;
+
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
+ netif_tx_wake_queue(txq);
}
-#endif
- if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state))
- __netif_schedule(dev);
+}
+
+static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
+{
+ set_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
}
/**
*/
static inline void netif_stop_queue(struct net_device *dev)
{
- set_bit(__LINK_STATE_XOFF, &dev->state);
+ netif_tx_stop_queue(netdev_get_tx_queue(dev, 0));
+}
+
+static inline void netif_tx_stop_all_queues(struct net_device *dev)
+{
+ unsigned int i;
+
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
+ netif_tx_stop_queue(txq);
+ }
+}
+
+static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue)
+{
+ return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
}
/**
*/
static inline int netif_queue_stopped(const struct net_device *dev)
{
- return test_bit(__LINK_STATE_XOFF, &dev->state);
+ return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0));
+}
+
+static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue)
+{
+ return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state);
}
/**
*/
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
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
+ clear_bit(__QUEUE_STATE_XOFF, &txq->state);
}
/**
*/
static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
{
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
#ifdef CONFIG_NETPOLL_TRAP
if (netpoll_trap())
return;
#endif
- set_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
-#endif
+ set_bit(__QUEUE_STATE_XOFF, &txq->state);
}
/**
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
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
+ return test_bit(__QUEUE_STATE_XOFF, &txq->state);
}
static inline int netif_subqueue_stopped(const struct net_device *dev,
*/
static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
{
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
#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
+ if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state))
+ __netif_schedule(txq->qdisc);
}
/**
* @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
+ return (dev->num_tx_queues > 1);
}
/* Use this variant when it is known for sure that it
extern int netif_rx_ni(struct sk_buff *skb);
#define HAVE_NETIF_RECEIVE_SKB 1
extern int netif_receive_skb(struct sk_buff *skb);
+extern void netif_nit_deliver(struct sk_buff *skb);
extern int dev_valid_name(const char *name);
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_name(struct net_device *, const char *);
+extern int dev_set_alias(struct net_device *, const char *, size_t);
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);
+ struct net_device *dev,
+ struct netdev_queue *txq);
extern int netdev_budget;
local_irq_restore(flags);
}
+static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu)
+{
+ spin_lock(&txq->_xmit_lock);
+ txq->xmit_lock_owner = cpu;
+}
+
+static inline void __netif_tx_lock_bh(struct netdev_queue *txq)
+{
+ spin_lock_bh(&txq->_xmit_lock);
+ txq->xmit_lock_owner = smp_processor_id();
+}
+
+static inline int __netif_tx_trylock(struct netdev_queue *txq)
+{
+ int ok = spin_trylock(&txq->_xmit_lock);
+ if (likely(ok))
+ txq->xmit_lock_owner = smp_processor_id();
+ return ok;
+}
+
+static inline void __netif_tx_unlock(struct netdev_queue *txq)
+{
+ txq->xmit_lock_owner = -1;
+ spin_unlock(&txq->_xmit_lock);
+}
+
+static inline void __netif_tx_unlock_bh(struct netdev_queue *txq)
+{
+ txq->xmit_lock_owner = -1;
+ spin_unlock_bh(&txq->_xmit_lock);
+}
+
/**
* netif_tx_lock - grab network device transmit lock
* @dev: network device
*
* Get network device transmit lock
*/
-static inline void __netif_tx_lock(struct net_device *dev, int cpu)
-{
- spin_lock(&dev->_xmit_lock);
- dev->xmit_lock_owner = cpu;
-}
-
static inline void netif_tx_lock(struct net_device *dev)
{
- __netif_tx_lock(dev, smp_processor_id());
+ unsigned int i;
+ int cpu;
+
+ spin_lock(&dev->tx_global_lock);
+ cpu = smp_processor_id();
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
+
+ /* We are the only thread of execution doing a
+ * freeze, but we have to grab the _xmit_lock in
+ * order to synchronize with threads which are in
+ * the ->hard_start_xmit() handler and already
+ * checked the frozen bit.
+ */
+ __netif_tx_lock(txq, cpu);
+ set_bit(__QUEUE_STATE_FROZEN, &txq->state);
+ __netif_tx_unlock(txq);
+ }
}
static inline void netif_tx_lock_bh(struct net_device *dev)
{
- spin_lock_bh(&dev->_xmit_lock);
- dev->xmit_lock_owner = smp_processor_id();
-}
-
-static inline int netif_tx_trylock(struct net_device *dev)
-{
- int ok = spin_trylock(&dev->_xmit_lock);
- if (likely(ok))
- dev->xmit_lock_owner = smp_processor_id();
- return ok;
+ local_bh_disable();
+ netif_tx_lock(dev);
}
static inline void netif_tx_unlock(struct net_device *dev)
{
- dev->xmit_lock_owner = -1;
- spin_unlock(&dev->_xmit_lock);
+ unsigned int i;
+
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
+
+ /* No need to grab the _xmit_lock here. If the
+ * queue is not stopped for another reason, we
+ * force a schedule.
+ */
+ clear_bit(__QUEUE_STATE_FROZEN, &txq->state);
+ if (!test_bit(__QUEUE_STATE_XOFF, &txq->state))
+ __netif_schedule(txq->qdisc);
+ }
+ spin_unlock(&dev->tx_global_lock);
}
static inline void netif_tx_unlock_bh(struct net_device *dev)
{
- dev->xmit_lock_owner = -1;
- spin_unlock_bh(&dev->_xmit_lock);
+ netif_tx_unlock(dev);
+ local_bh_enable();
}
-#define HARD_TX_LOCK(dev, cpu) { \
+#define HARD_TX_LOCK(dev, txq, cpu) { \
if ((dev->features & NETIF_F_LLTX) == 0) { \
- __netif_tx_lock(dev, cpu); \
+ __netif_tx_lock(txq, cpu); \
} \
}
-#define HARD_TX_UNLOCK(dev) { \
+#define HARD_TX_UNLOCK(dev, txq) { \
if ((dev->features & NETIF_F_LLTX) == 0) { \
- netif_tx_unlock(dev); \
+ __netif_tx_unlock(txq); \
} \
}
static inline void netif_tx_disable(struct net_device *dev)
{
- netif_tx_lock_bh(dev);
- netif_stop_queue(dev);
- netif_tx_unlock_bh(dev);
+ unsigned int i;
+ int cpu;
+
+ local_bh_disable();
+ cpu = smp_processor_id();
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
+
+ __netif_tx_lock(txq, cpu);
+ netif_tx_stop_queue(txq);
+ __netif_tx_unlock(txq);
+ }
+ local_bh_enable();
+}
+
+static inline void netif_addr_lock(struct net_device *dev)
+{
+ spin_lock(&dev->addr_list_lock);
+}
+
+static inline void netif_addr_lock_bh(struct net_device *dev)
+{
+ spin_lock_bh(&dev->addr_list_lock);
+}
+
+static inline void netif_addr_unlock(struct net_device *dev)
+{
+ spin_unlock(&dev->addr_list_lock);
+}
+
+static inline void netif_addr_unlock_bh(struct net_device *dev)
+{
+ spin_unlock_bh(&dev->addr_list_lock);
}
/* These functions live elsewhere (drivers/net/net_init.c, but related) */
extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
-extern void dev_set_promiscuity(struct net_device *dev, int inc);
-extern void dev_set_allmulti(struct net_device *dev, int inc);
+extern int dev_set_promiscuity(struct net_device *dev, int inc);
+extern int dev_set_allmulti(struct net_device *dev, int inc);
extern void netdev_state_change(struct net_device *dev);
+extern void netdev_bonding_change(struct net_device *dev);
extern void netdev_features_change(struct net_device *dev);
/* Load a device via the kmod */
extern void dev_load(struct net *net, const char *name);
extern void dev_seq_stop(struct seq_file *seq, void *v);
#endif
+extern int netdev_class_create_file(struct class_attribute *class_attr);
+extern void netdev_class_remove_file(struct class_attribute *class_attr);
+
+extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len);
+
extern void linkwatch_run_queue(void);
extern int netdev_compute_features(unsigned long all, unsigned long one);
projects / linux-2.6-omap-h63xx.git / blobdiff