#define HAVE_FREE_NETDEV /* free_netdev() */
#define HAVE_NETDEV_PRIV /* netdev_priv() */
-#define NET_XMIT_SUCCESS 0
-#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_MASK 0xFFFF /* qdisc flags in net/sch_generic.h */
-
/* Backlog congestion levels */
-#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
-#define NET_RX_DROP 1 /* packet dropped */
-#define NET_RX_CN_LOW 2 /* storm alert, just in case */
-#define NET_RX_CN_MOD 3 /* Storm on its way! */
-#define NET_RX_CN_HIGH 4 /* The storm is here */
-#define NET_RX_BAD 5 /* packet dropped due to kernel error */
+#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
+#define NET_RX_DROP 1 /* packet dropped */
+
+/*
+ * Transmit return codes: transmit return codes originate from three different
+ * namespaces:
+ *
+ * - qdisc return codes
+ * - driver transmit return codes
+ * - errno values
+ *
+ * Drivers are allowed to return any one of those in their hard_start_xmit()
+ * function. Real network devices commonly used with qdiscs should only return
+ * the driver transmit return codes though - when qdiscs are used, the actual
+ * transmission happens asynchronously, so the value is not propagated to
+ * higher layers. Virtual network devices transmit synchronously, in this case
+ * the driver transmit return codes are consumed by dev_queue_xmit(), all
+ * others are propagated to higher layers.
+ */
+
+/* qdisc ->enqueue() return codes. */
+#define NET_XMIT_SUCCESS 0x00
+#define NET_XMIT_DROP 0x01 /* skb dropped */
+#define NET_XMIT_CN 0x02 /* congestion notification */
+#define NET_XMIT_POLICED 0x03 /* skb is shot by police */
+#define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */
/* 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_eval(e) ((e) == NET_XMIT_CN ? 0 : (e))
#define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
+/* Driver transmit return codes */
+#define NETDEV_TX_MASK 0xf0
+
+enum netdev_tx {
+ __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */
+ NETDEV_TX_OK = 0x00, /* driver took care of packet */
+ NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/
+ NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */
+};
+typedef enum netdev_tx netdev_tx_t;
+
+/*
+ * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant;
+ * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed.
+ */
+static inline bool dev_xmit_complete(int rc)
+{
+ /*
+ * Positive cases with an skb consumed by a driver:
+ * - successful transmission (rc == NETDEV_TX_OK)
+ * - error while transmitting (rc < 0)
+ * - error while queueing to a different device (rc & NET_XMIT_MASK)
+ */
+ if (likely(rc < NET_XMIT_MASK))
+ return true;
+
+ return false;
+}
+
#endif
#define MAX_ADDR_LEN 32 /* Largest hardware address length */
-/* Driver transmit return codes */
-#define NETDEV_TX_OK 0 /* driver took care of packet */
-#define NETDEV_TX_BUSY 1 /* driver tx path was busy*/
-#define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */
-
#ifdef __KERNEL__
-
/*
* Compute the worst case header length according to the protocols
* used.
* with byte counters.
*/
-struct net_device_stats
-{
+struct net_device_stats {
unsigned long rx_packets; /* total packets received */
unsigned long tx_packets; /* total packets transmitted */
unsigned long rx_bytes; /* total bytes received */
struct neigh_parms;
struct sk_buff;
-struct netif_rx_stats
-{
+struct netif_rx_stats {
unsigned total;
unsigned dropped;
unsigned time_squeeze;
DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);
-struct dev_addr_list
-{
+struct dev_addr_list {
struct dev_addr_list *next;
u8 da_addr[MAX_ADDR_LEN];
u8 da_addrlen;
struct list_head list;
unsigned char addr[MAX_ADDR_LEN];
unsigned char type;
-#define NETDEV_HW_ADDR_T_LAN 1
-#define NETDEV_HW_ADDR_T_SAN 2
-#define NETDEV_HW_ADDR_T_SLAVE 3
+#define NETDEV_HW_ADDR_T_LAN 1
+#define NETDEV_HW_ADDR_T_SAN 2
+#define NETDEV_HW_ADDR_T_SLAVE 3
+#define NETDEV_HW_ADDR_T_UNICAST 4
+ int refcount;
+ bool synced;
struct rcu_head rcu_head;
};
-struct hh_cache
-{
+struct netdev_hw_addr_list {
+ struct list_head list;
+ int count;
+};
+
+struct hh_cache {
struct hh_cache *hh_next; /* Next entry */
atomic_t hh_refcnt; /* number of users */
/*
* code.
*/
-enum netdev_state_t
-{
+enum netdev_state_t {
__LINK_STATE_START,
__LINK_STATE_PRESENT,
__LINK_STATE_NOCARRIER,
struct sk_buff *skb;
};
-enum
-{
+enum {
NAPI_STATE_SCHED, /* Poll is scheduled */
NAPI_STATE_DISABLE, /* Disable pending */
NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */
};
-enum {
+enum gro_result {
GRO_MERGED,
GRO_MERGED_FREE,
GRO_HELD,
GRO_NORMAL,
GRO_DROP,
};
+typedef enum gro_result gro_result_t;
extern void __napi_schedule(struct napi_struct *n);
# define napi_synchronize(n) barrier()
#endif
-enum netdev_queue_state_t
-{
+enum netdev_queue_state_t {
__QUEUE_STATE_XOFF,
__QUEUE_STATE_FROZEN,
};
* This function is called when network device transistions to the down
* state.
*
- * int (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev);
+ * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
+ * struct net_device *dev);
* Called when a packet needs to be transmitted.
- * Must return NETDEV_TX_OK , NETDEV_TX_BUSY, or NETDEV_TX_LOCKED,
+ * Must return NETDEV_TX_OK , NETDEV_TX_BUSY.
+ * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX)
* Required can not be NULL.
*
* u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);
* Callback uses when the transmitter has not made any progress
* for dev->watchdog ticks.
*
- * struct net_device_stats* (*get_stats)(struct net_device *dev);
+ * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
* Called when a user wants to get the network device usage
* statistics. If not defined, the counters in dev->stats will
* be used.
void (*ndo_uninit)(struct net_device *dev);
int (*ndo_open)(struct net_device *dev);
int (*ndo_stop)(struct net_device *dev);
- int (*ndo_start_xmit) (struct sk_buff *skb,
+ netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb,
struct net_device *dev);
u16 (*ndo_select_queue)(struct net_device *dev,
struct sk_buff *skb);
-#define HAVE_CHANGE_RX_FLAGS
void (*ndo_change_rx_flags)(struct net_device *dev,
int flags);
-#define HAVE_SET_RX_MODE
void (*ndo_set_rx_mode)(struct net_device *dev);
-#define HAVE_MULTICAST
void (*ndo_set_multicast_list)(struct net_device *dev);
-#define HAVE_SET_MAC_ADDR
int (*ndo_set_mac_address)(struct net_device *dev,
void *addr);
-#define HAVE_VALIDATE_ADDR
int (*ndo_validate_addr)(struct net_device *dev);
-#define HAVE_PRIVATE_IOCTL
int (*ndo_do_ioctl)(struct net_device *dev,
struct ifreq *ifr, int cmd);
-#define HAVE_SET_CONFIG
int (*ndo_set_config)(struct net_device *dev,
struct ifmap *map);
-#define HAVE_CHANGE_MTU
int (*ndo_change_mtu)(struct net_device *dev,
int new_mtu);
int (*ndo_neigh_setup)(struct net_device *dev,
struct neigh_parms *);
-#define HAVE_TX_TIMEOUT
void (*ndo_tx_timeout) (struct net_device *dev);
struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
void (*ndo_vlan_rx_kill_vid)(struct net_device *dev,
unsigned short vid);
#ifdef CONFIG_NET_POLL_CONTROLLER
-#define HAVE_NETDEV_POLL
void (*ndo_poll_controller)(struct net_device *dev);
#endif
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
+ int (*ndo_fcoe_enable)(struct net_device *dev);
+ int (*ndo_fcoe_disable)(struct net_device *dev);
int (*ndo_fcoe_ddp_setup)(struct net_device *dev,
u16 xid,
struct scatterlist *sgl,
unsigned int sgc);
int (*ndo_fcoe_ddp_done)(struct net_device *dev,
u16 xid);
+#define NETDEV_FCOE_WWNN 0
+#define NETDEV_FCOE_WWPN 1
+ int (*ndo_fcoe_get_wwn)(struct net_device *dev,
+ u64 *wwn, int type);
#endif
};
* moves out.
*/
-struct net_device
-{
+struct net_device {
/*
* This is the first field of the "visible" part of this structure
struct list_head dev_list;
struct list_head napi_list;
+ struct list_head unreg_list;
/* Net device features */
unsigned long features;
/* the GSO_MASK reserves bits 16 through 23 */
#define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
#define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
+#define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
/* Segmentation offload features */
#define NETIF_F_GSO_SHIFT 16
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 */
+ struct netdev_hw_addr_list uc; /* Secondary unicast
+ mac addresses */
int uc_promisc;
+ spinlock_t addr_list_lock;
struct dev_addr_list *mc_list; /* Multicast mac addresses */
int mc_count; /* Number of installed mcasts */
unsigned int promiscuity;
because most packets are
unicast) */
- struct list_head dev_addr_list; /* list of device hw addresses */
+ struct netdev_hw_addr_list dev_addrs; /* list of device
+ hw addresses */
unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
/* Number of TX queues currently active in device */
unsigned int real_num_tx_queues;
+ /* root qdisc from userspace point of view */
+ struct Qdisc *qdisc;
+
unsigned long tx_queue_len; /* Max frames per queue allowed */
spinlock_t tx_global_lock;
/*
/* device index hash chain */
struct hlist_node index_hlist;
- struct net_device *link_watch_next;
+ struct list_head link_watch_list;
/* register/unregister state machine */
enum { NETREG_UNINITIALIZED=0,
/* class/net/name entry */
struct device dev;
- /* space for optional statistics and wireless sysfs groups */
- struct attribute_group *sysfs_groups[3];
+ /* space for optional device, statistics, and wireless sysfs groups */
+ const struct attribute_group *sysfs_groups[4];
/* rtnetlink link ops */
const struct rtnl_link_ops *rtnl_link_ops;
#ifdef CONFIG_DCB
/* Data Center Bridging netlink ops */
- struct dcbnl_rtnl_ops *dcbnl_ops;
+ const struct dcbnl_rtnl_ops *dcbnl_ops;
#endif
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
*/
#define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
+/* Set the sysfs device type for the network logical device to allow
+ * fin grained indentification of different network device types. For
+ * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc.
+ */
+#define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype))
+
/**
* netif_napi_add - initialize a napi context
* @dev: network device
#define for_each_netdev(net, d) \
list_for_each_entry(d, &(net)->dev_base_head, dev_list)
+#define for_each_netdev_reverse(net, d) \
+ list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
+#define for_each_netdev_rcu(net, d) \
+ list_for_each_entry_rcu(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 for_each_netdev_continue_rcu(net, d) \
+ list_for_each_entry_continue_rcu(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)
return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
}
+static inline struct net_device *next_net_device_rcu(struct net_device *dev)
+{
+ struct list_head *lh;
+ struct net *net;
+
+ net = dev_net(dev);
+ lh = rcu_dereference(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 :
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(struct net *net, const char *name);
+extern struct net_device *dev_get_by_name_rcu(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 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);
+extern void unregister_netdevice_queue(struct net_device *dev,
+ struct list_head *head);
+extern void unregister_netdevice_many(struct list_head *head);
+static inline void unregister_netdevice(struct net_device *dev)
+{
+ unregister_netdevice_queue(dev, NULL);
+}
+
extern void free_netdev(struct net_device *dev);
extern void synchronize_net(void);
extern int register_netdevice_notifier(struct notifier_block *nb);
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 struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
extern int dev_restart(struct net_device *dev);
#ifdef CONFIG_NETPOLL_TRAP
extern int netpoll_trap(void);
* Incoming packets are placed on per-cpu queues so that
* no locking is needed.
*/
-struct softnet_data
-{
+struct softnet_data {
struct Qdisc *output_queue;
struct sk_buff_head input_pkt_queue;
struct list_head poll_list;
{
#ifdef CONFIG_NETPOLL_TRAP
if (netpoll_trap()) {
- clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
+ netif_tx_start_queue(dev_queue);
return;
}
#endif
static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
{
struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
- clear_bit(__QUEUE_STATE_XOFF, &txq->state);
+
+ netif_tx_start_queue(txq);
}
/**
if (netpoll_trap())
return;
#endif
- set_bit(__QUEUE_STATE_XOFF, &txq->state);
+ netif_tx_stop_queue(txq);
}
/**
u16 queue_index)
{
struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
- return test_bit(__QUEUE_STATE_XOFF, &txq->state);
+
+ return netif_tx_queue_stopped(txq);
}
static inline int netif_subqueue_stopped(const struct net_device *dev,
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 napi_gro_flush(struct napi_struct *napi);
-extern int dev_gro_receive(struct napi_struct *napi,
+extern gro_result_t dev_gro_receive(struct napi_struct *napi,
struct sk_buff *skb);
-extern int napi_skb_finish(int ret, struct sk_buff *skb);
-extern int napi_gro_receive(struct napi_struct *napi,
+extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb);
+extern gro_result_t napi_gro_receive(struct napi_struct *napi,
struct sk_buff *skb);
extern void napi_reuse_skb(struct napi_struct *napi,
struct sk_buff *skb);
extern struct sk_buff * napi_get_frags(struct napi_struct *napi);
-extern int napi_frags_finish(struct napi_struct *napi,
- struct sk_buff *skb, int ret);
+extern gro_result_t napi_frags_finish(struct napi_struct *napi,
+ struct sk_buff *skb,
+ gro_result_t ret);
extern struct sk_buff * napi_frags_skb(struct napi_struct *napi);
-extern int napi_gro_frags(struct napi_struct *napi);
+extern gro_result_t napi_gro_frags(struct napi_struct *napi);
static inline void napi_free_frags(struct napi_struct *napi)
{
extern int dev_hard_start_xmit(struct sk_buff *skb,
struct net_device *dev,
struct netdev_queue *txq);
+extern int dev_forward_skb(struct net_device *dev,
+ struct sk_buff *skb);
extern int netdev_budget;
*/
extern void linkwatch_fire_event(struct net_device *dev);
+extern void linkwatch_forget_dev(struct net_device *dev);
/**
* netif_carrier_ok - test if carrier present
*
* Check if carrier is operational
*/
-static inline int netif_oper_up(const struct net_device *dev) {
+static inline int netif_oper_up(const struct net_device *dev)
+{
return (dev->operstate == IF_OPER_UP ||
dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
}
* force a schedule.
*/
clear_bit(__QUEUE_STATE_FROZEN, &txq->state);
- if (!test_bit(__QUEUE_STATE_XOFF, &txq->state))
- __netif_schedule(txq->qdisc);
+ netif_schedule_queue(txq);
}
spin_unlock(&dev->tx_global_lock);
}
}
/*
- * dev_addr_list walker. Should be used only for read access. Call with
+ * dev_addrs walker. Should be used only for read access. Call with
* rcu_read_lock held.
*/
#define for_each_dev_addr(dev, ha) \
- list_for_each_entry_rcu(ha, &dev->dev_addr_list, list)
+ list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list)
/* These functions live elsewhere (drivers/net/net_init.c, but related) */
/* 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_unicast_delete(struct net_device *dev, void *addr);
+extern int dev_unicast_add(struct net_device *dev, void *addr);
extern int dev_unicast_sync(struct net_device *to, struct net_device *from);
extern void dev_unicast_unsync(struct net_device *to, struct net_device *from);
extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
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_bonding_change(struct net_device *dev,
+ unsigned long event);
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_mcast_init(void);
extern const struct net_device_stats *dev_get_stats(struct net_device *dev);
+extern void dev_txq_stats_fold(const struct net_device *dev, struct net_device_stats *stats);
extern int netdev_max_backlog;
extern int weight_p;
unsigned long mask);
unsigned long netdev_fix_features(unsigned long features, const char *name);
+void netif_stacked_transfer_operstate(const struct net_device *rootdev,
+ struct net_device *dev);
+
static inline int net_gso_ok(int features, int gso_type)
{
int feature = gso_type << NETIF_F_GSO_SHIFT;
static inline int skb_gso_ok(struct sk_buff *skb, int features)
{
- return net_gso_ok(features, skb_shinfo(skb)->gso_type);
+ return net_gso_ok(features, skb_shinfo(skb)->gso_type) &&
+ (!skb_has_frags(skb) || (features & NETIF_F_FRAGLIST));
}
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) ||
- (skb_shinfo(skb)->frag_list &&
- !(dev->features & NETIF_F_FRAGLIST)) ||
unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
}
dev->gso_max_size = size;
}
+static inline void skb_bond_set_mac_by_master(struct sk_buff *skb,
+ struct net_device *master)
+{
+ if (skb->pkt_type == PACKET_HOST) {
+ u16 *dest = (u16 *) eth_hdr(skb)->h_dest;
+
+ memcpy(dest, master->dev_addr, ETH_ALEN);
+ }
+}
+
/* 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.
if (master->priv_flags & IFF_MASTER_ARPMON)
dev->last_rx = jiffies;
+ if ((master->priv_flags & IFF_MASTER_ALB) && master->br_port) {
+ /* Do address unmangle. The local destination address
+ * will be always the one master has. Provides the right
+ * functionality in a bridge.
+ */
+ skb_bond_set_mac_by_master(skb, master);
+ }
+
if (dev->priv_flags & IFF_SLAVE_INACTIVE) {
if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
skb->protocol == __cpu_to_be16(ETH_P_ARP))
}
#endif /* __KERNEL__ */
-#endif /* _LINUX_DEV_H */
+#endif /* _LINUX_NETDEVICE_H */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff