* 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>
*
#ifdef __KERNEL__
#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/mm.h>
#include <asm/atomic.h>
#include <asm/cache.h>
#include <asm/byteorder.h>
#include <linux/device.h>
#include <linux/percpu.h>
+#include <linux/rculist.h>
#include <linux/dmaengine.h>
+#include <linux/workqueue.h>
+
+#include <linux/ethtool.h>
+#include <net/net_namespace.h>
+#include <net/dsa.h>
+#ifdef CONFIG_DCB
+#include <net/dcbnl.h>
+#endif
struct vlan_group;
-struct ethtool_ops;
struct netpoll_info;
/* 802.11 specific */
struct wireless_dev;
#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_BYPASS 4 /* packet does not leave via dequeue;
- (TC use only - dev_queue_xmit
- returns this as NET_XMIT_SUCCESS) */
-
/* 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.
*/
-
-#if !defined(CONFIG_AX25) && !defined(CONFIG_AX25_MODULE) && !defined(CONFIG_TR)
-#define LL_MAX_HEADER 32
-#else
-#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
-#define LL_MAX_HEADER 96
+
+#if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
+# if defined(CONFIG_MAC80211_MESH)
+# define LL_MAX_HEADER 128
+# else
+# define LL_MAX_HEADER 96
+# endif
+#elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE)
+# define LL_MAX_HEADER 48
#else
-#define LL_MAX_HEADER 48
-#endif
+# define LL_MAX_HEADER 32
#endif
#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
#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;
-};
+#endif /* __KERNEL__ */
/*
* Network device statistics. Akin to the 2.0 ether stats but
* 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;
#define dmi_users da_users
#define dmi_gusers da_gusers
-struct hh_cache
-{
+struct netdev_hw_addr {
+ 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_UNICAST 4
+ int refcount;
+ bool synced;
+ struct rcu_head rcu_head;
+};
+
+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 */
/*
*
* We could use other alignment values, but we must maintain the
* relationship HH alignment <= LL alignment.
+ *
+ * LL_ALLOCATED_SPACE also takes into account the tailroom the device
+ * may need.
*/
#define LL_RESERVED_SPACE(dev) \
- (((dev)->hard_header_len&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
+ ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
#define LL_RESERVED_SPACE_EXTRA(dev,extra) \
- ((((dev)->hard_header_len+extra)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
+ ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
+#define LL_ALLOCATED_SPACE(dev) \
+ ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(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.
*/
-enum netdev_state_t
-{
- __LINK_STATE_XOFF=0,
+enum netdev_state_t {
__LINK_STATE_START,
__LINK_STATE_PRESENT,
- __LINK_STATE_SCHED,
__LINK_STATE_NOCARRIER,
- __LINK_STATE_RX_SCHED,
__LINK_STATE_LINKWATCH_PENDING,
__LINK_STATE_DORMANT,
- __LINK_STATE_QDISC_RUNNING,
};
/*
* This structure holds at boot time configured netdevice settings. They
- * are then used in the device probing.
+ * are then used in the device probing.
*/
struct netdev_boot_setup {
char name[IFNAMSIZ];
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;
+#endif
+
+ unsigned int gro_count;
+
+ struct net_device *dev;
+ struct list_head dev_list;
+ struct sk_buff *gro_list;
+ struct sk_buff *skb;
+};
+
+enum {
+ NAPI_STATE_SCHED, /* Poll is scheduled */
+ NAPI_STATE_DISABLE, /* Disable pending */
+ NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */
+};
+
+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);
+
+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.
+ */
+extern void __napi_complete(struct napi_struct *n);
+extern void napi_complete(struct napi_struct *n);
+
+/**
+ * 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
+
+enum netdev_queue_state_t {
+ __QUEUE_STATE_XOFF,
+ __QUEUE_STATE_FROZEN,
+};
+
+struct netdev_queue {
+/*
+ * read mostly part
+ */
+ struct net_device *dev;
+ struct Qdisc *qdisc;
+ unsigned long state;
+ struct Qdisc *qdisc_sleeping;
+/*
+ * write mostly part
+ */
+ spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
+ int xmit_lock_owner;
+ /*
+ * please use this field instead of dev->trans_start
+ */
+ unsigned long trans_start;
+ unsigned long tx_bytes;
+ unsigned long tx_packets;
+ unsigned long tx_dropped;
+} ____cacheline_aligned_in_smp;
+
+
+/*
+ * This structure defines the management hooks for network devices.
+ * The following hooks can be defined; unless noted otherwise, they are
+ * optional and can be filled with a null pointer.
+ *
+ * int (*ndo_init)(struct net_device *dev);
+ * This function is called once when network device is registered.
+ * The network device can use this to any late stage initializaton
+ * or semantic validattion. It can fail with an error code which will
+ * be propogated back to register_netdev
+ *
+ * void (*ndo_uninit)(struct net_device *dev);
+ * This function is called when device is unregistered or when registration
+ * fails. It is not called if init fails.
+ *
+ * int (*ndo_open)(struct net_device *dev);
+ * This function is called when network device transistions to the up
+ * state.
+ *
+ * int (*ndo_stop)(struct net_device *dev);
+ * This function is called when network device transistions to the down
+ * state.
+ *
+ * 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.
+ * (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);
+ * Called to decide which queue to when device supports multiple
+ * transmit queues.
+ *
+ * void (*ndo_change_rx_flags)(struct net_device *dev, int flags);
+ * This function is called to allow device receiver to make
+ * changes to configuration when multicast or promiscious is enabled.
+ *
+ * void (*ndo_set_rx_mode)(struct net_device *dev);
+ * This function is called device changes address list filtering.
+ *
+ * void (*ndo_set_multicast_list)(struct net_device *dev);
+ * This function is called when the multicast address list changes.
+ *
+ * int (*ndo_set_mac_address)(struct net_device *dev, void *addr);
+ * This function is called when the Media Access Control address
+ * needs to be changed. If this interface is not defined, the
+ * mac address can not be changed.
+ *
+ * int (*ndo_validate_addr)(struct net_device *dev);
+ * Test if Media Access Control address is valid for the device.
+ *
+ * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
+ * Called when a user request an ioctl which can't be handled by
+ * the generic interface code. If not defined ioctl's return
+ * not supported error code.
+ *
+ * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map);
+ * Used to set network devices bus interface parameters. This interface
+ * is retained for legacy reason, new devices should use the bus
+ * interface (PCI) for low level management.
+ *
+ * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
+ * Called when a user wants to change the Maximum Transfer Unit
+ * of a device. If not defined, any request to change MTU will
+ * will return an error.
+ *
+ * void (*ndo_tx_timeout)(struct net_device *dev);
+ * Callback uses when the transmitter has not made any progress
+ * for dev->watchdog ticks.
+ *
+ * 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_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);
+ * If device support VLAN receive accleration
+ * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called
+ * when vlan groups for the device changes. Note: grp is NULL
+ * if no vlan's groups are being used.
+ *
+ * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid);
+ * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
+ * this function is called when a VLAN id is registered.
+ *
+ * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid);
+ * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
+ * this function is called when a VLAN id is unregistered.
+ *
+ * void (*ndo_poll_controller)(struct net_device *dev);
+ */
+#define HAVE_NET_DEVICE_OPS
+struct net_device_ops {
+ int (*ndo_init)(struct net_device *dev);
+ void (*ndo_uninit)(struct net_device *dev);
+ int (*ndo_open)(struct net_device *dev);
+ int (*ndo_stop)(struct net_device *dev);
+ 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);
+ void (*ndo_change_rx_flags)(struct net_device *dev,
+ int flags);
+ void (*ndo_set_rx_mode)(struct net_device *dev);
+ void (*ndo_set_multicast_list)(struct net_device *dev);
+ int (*ndo_set_mac_address)(struct net_device *dev,
+ void *addr);
+ int (*ndo_validate_addr)(struct net_device *dev);
+ int (*ndo_do_ioctl)(struct net_device *dev,
+ struct ifreq *ifr, int cmd);
+ int (*ndo_set_config)(struct net_device *dev,
+ struct ifmap *map);
+ int (*ndo_change_mtu)(struct net_device *dev,
+ int new_mtu);
+ int (*ndo_neigh_setup)(struct net_device *dev,
+ struct neigh_parms *);
+ void (*ndo_tx_timeout) (struct net_device *dev);
+
+ struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
+
+ void (*ndo_vlan_rx_register)(struct net_device *dev,
+ struct vlan_group *grp);
+ void (*ndo_vlan_rx_add_vid)(struct net_device *dev,
+ unsigned short vid);
+ void (*ndo_vlan_rx_kill_vid)(struct net_device *dev,
+ unsigned short vid);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ 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
+};
+
+/*
* 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
* moves out.
*/
-struct net_device
-{
+struct net_device {
/*
* This is the first field of the "visible" part of this structure
char name[IFNAMSIZ];
/* device name hash chain */
struct hlist_node name_hlist;
+ /* snmp alias */
+ char *ifalias;
/*
* I/O specific fields
unsigned long state;
struct list_head dev_list;
-
- /* The device initialization function. Called only once. */
- int (*init)(struct net_device *dev);
-
- /* ------- Fields preinitialized in Space.c finish here ------- */
+ struct list_head napi_list;
+ struct list_head unreg_list;
/* Net device features */
unsigned long features;
#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_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */
+#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_GRO 16384 /* Generic receive offload */
+#define NETIF_F_LRO 32768 /* large receive offload */
+
+/* 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
-#define NETIF_F_GSO_MASK 0xffff0000
+#define NETIF_F_GSO_MASK 0x00ff0000
#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)
+#define NETIF_F_FSO (SKB_GSO_FCOE << 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_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;
+ /*
+ * If one device supports one of these features, then enable them
+ * for all in netdev_increment_features.
+ */
+#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
+ NETIF_F_SG | NETIF_F_HIGHDMA | \
+ NETIF_F_FRAGLIST)
/* Interface index. Unique device identifier */
int ifindex;
int iflink;
-
- struct net_device_stats* (*get_stats)(struct net_device *dev);
struct net_device_stats stats;
#ifdef CONFIG_WIRELESS_EXT
/* Instance data managed by the core of Wireless Extensions. */
struct iw_public_data * wireless_data;
#endif
+ /* Management operations */
+ const struct net_device_ops *netdev_ops;
const struct ethtool_ops *ethtool_ops;
- /*
- * This marks the end of the "visible" part of the structure. All
- * fields hereafter are internal to the system, and may change at
- * will (read: may be cleaned up at will).
- */
-
+ /* Hardware header description */
+ const struct header_ops *header_ops;
unsigned int flags; /* interface flags (a la BSD) */
unsigned short gflags;
unsigned short type; /* interface hardware type */
unsigned short hard_header_len; /* hardware hdr length */
+ /* extra head- and tailroom the hardware may need, but not in all cases
+ * can this be guaranteed, especially tailroom. Some cases also use
+ * LL_MAX_HEADER instead to allocate the skb.
+ */
+ unsigned short needed_headroom;
+ unsigned short needed_tailroom;
+
struct net_device *master; /* Pointer to master device of a group,
* which this device is member of.
*/
unsigned char addr_len; /* hardware address length */
unsigned short dev_id; /* for shared network cards */
- 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 */
- 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 *ip_ptr; /* IPv4 specific data */
void *dn_ptr; /* DECnet specific data */
void *ip6_ptr; /* IPv6 specific data */
void *ec_ptr; /* Econet specific data */
/*
* 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
- because most packets are unicast) */
+ unsigned char *dev_addr; /* hw address, (before bcast
+ because most packets are
+ unicast) */
+
+ struct netdev_hw_addr_list dev_addrs; /* list of device
+ hw addresses */
unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
-/*
- * 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 rx_queue;
+
+ struct netdev_queue *_tx ____cacheline_aligned_in_smp;
- /* Partially transmitted GSO packet. */
- struct sk_buff *gso_skb;
+ /* Number of TX queues allocated at alloc_netdev_mq() time */
+ unsigned int num_tx_queues;
- /* ingress path synchronizer */
- spinlock_t ingress_lock;
- struct Qdisc *qdisc_ingress;
+ /* 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;
/*
* 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);
/* These may be needed for future network-power-down code. */
+
+ /*
+ * trans_start here is expensive for high speed devices on SMP,
+ * please use netdev_queue->trans_start instead.
+ */
unsigned long trans_start; /* Time (in jiffies) of last Tx */
int watchdog_timeo; /* used by dev_watchdog() */
struct timer_list watchdog_timer;
-/*
- * refcnt is a very hot point, so align it on SMP
- */
/* Number of references to this device */
atomic_t refcnt ____cacheline_aligned_in_smp;
/* 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,
NETREG_UNREGISTERING, /* called unregister_netdevice */
NETREG_UNREGISTERED, /* completed unregister todo */
NETREG_RELEASED, /* called free_netdev */
+ NETREG_DUMMY, /* dummy device for NAPI poll */
} reg_state;
- /* Called after device is detached from network. */
- void (*uninit)(struct net_device *dev);
- /* Called after last user reference disappears. */
- void (*destructor)(struct net_device *dev);
-
- /* Pointers to interface service routines. */
- 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_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);
-
-#define HAVE_TX_TIMEOUT
- void (*tx_timeout) (struct net_device *dev);
-
- void (*vlan_rx_register)(struct net_device *dev,
- struct vlan_group *grp);
- void (*vlan_rx_add_vid)(struct net_device *dev,
- unsigned short vid);
- 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 *);
+ /* Called from unregister, can be used to call free_netdev */
+ void (*destructor)(struct net_device *dev);
+
#ifdef CONFIG_NETPOLL
struct netpoll_info *npinfo;
#endif
-#ifdef CONFIG_NET_POLL_CONTROLLER
- void (*poll_controller)(struct net_device *dev);
+
+#ifdef CONFIG_NET_NS
+ /* Network namespace this network device is inside */
+ struct net *nd_net;
#endif
+ /* mid-layer private */
+ void *ml_priv;
+
/* bridge stuff */
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;
- /* 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;
- /* The TX queue control structures */
- unsigned int egress_subqueue_count;
- struct net_device_subqueue egress_subqueue[1];
+ /* VLAN feature mask */
+ unsigned long vlan_features;
+
+ /* for setting kernel sock attribute on TCP connection setup */
+#define GSO_MAX_SIZE 65536
+ unsigned int gso_max_size;
+
+#ifdef CONFIG_DCB
+ /* Data Center Bridging netlink ops */
+ const struct dcbnl_rtnl_ops *dcbnl_ops;
+#endif
+
+#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
+ /* max exchange id for FCoE LRO by ddp */
+ unsigned int fcoe_ddp_xid;
+#endif
};
#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
+ */
+static inline
+struct net *dev_net(const struct net_device *dev)
+{
+#ifdef CONFIG_NET_NS
+ return dev->nd_net;
+#else
+ return &init_net;
+#endif
+}
+
+static inline
+void dev_net_set(struct net_device *dev, struct net *net)
+{
+#ifdef CONFIG_NET_NS
+ release_net(dev->nd_net);
+ dev->nd_net = hold_net(net);
+#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
+ *
+ * Get network device private data
+ */
static inline void *netdev_priv(const struct net_device *dev)
{
- return dev->priv;
+ return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN);
}
-#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)->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
+ * @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.
+ */
+void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
+ int (*poll)(struct napi_struct *, int), int weight);
+
+/**
+ * netif_napi_del - remove a napi context
+ * @napi: napi context
+ *
+ * netif_napi_del() removes a napi context from the network device napi list
+ */
+void netif_napi_del(struct napi_struct *napi);
+
+struct napi_gro_cb {
+ /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
+ void *frag0;
+
+ /* Length of frag0. */
+ unsigned int frag0_len;
+
+ /* This indicates where we are processing relative to skb->data. */
+ int data_offset;
+
+ /* This is non-zero if the packet may be of the same flow. */
+ int same_flow;
+
+ /* This is non-zero if the packet cannot be merged with the new skb. */
+ int flush;
+
+ /* Number of segments aggregated. */
+ int count;
+
+ /* Free the skb? */
+ int free;
+};
+
+#define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
+
struct packet_type {
__be16 type; /* This is really htons(ether_type). */
struct net_device *dev; /* NULL is wildcarded here */
struct sk_buff *(*gso_segment)(struct sk_buff *skb,
int features);
int (*gso_send_check)(struct sk_buff *skb);
+ struct sk_buff **(*gro_receive)(struct sk_buff **head,
+ struct sk_buff *skb);
+ int (*gro_complete)(struct sk_buff *skb);
void *af_packet_priv;
struct list_head list;
};
#include <linux/interrupt.h>
#include <linux/notifier.h>
-extern struct net_device loopback_dev; /* The loopback */
-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 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)
{
struct list_head *lh;
+ struct net *net;
+ net = dev_net(dev);
lh = dev->dev_list.next;
- return lh == &dev_base_head ? NULL : net_device_entry(lh);
+ 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(void)
+static inline struct net_device *first_net_device(struct net *net)
{
- return list_empty(&dev_base_head) ? NULL :
- net_device_entry(dev_base_head.next);
+ 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_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_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 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);
+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 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 init_dummy_netdev(struct net_device *dev);
+extern void netdev_resync_ops(struct net_device *dev);
+
+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);
#endif
+extern int skb_gro_receive(struct sk_buff **head,
+ struct sk_buff *skb);
+extern void skb_gro_reset_offset(struct sk_buff *skb);
+
+static inline unsigned int skb_gro_offset(const struct sk_buff *skb)
+{
+ return NAPI_GRO_CB(skb)->data_offset;
+}
+
+static inline unsigned int skb_gro_len(const struct sk_buff *skb)
+{
+ return skb->len - NAPI_GRO_CB(skb)->data_offset;
+}
+
+static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len)
+{
+ NAPI_GRO_CB(skb)->data_offset += len;
+}
+
+static inline void *skb_gro_header_fast(struct sk_buff *skb,
+ unsigned int offset)
+{
+ return NAPI_GRO_CB(skb)->frag0 + offset;
+}
+
+static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen)
+{
+ return NAPI_GRO_CB(skb)->frag0_len < hlen;
+}
+
+static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen,
+ unsigned int offset)
+{
+ NAPI_GRO_CB(skb)->frag0 = NULL;
+ NAPI_GRO_CB(skb)->frag0_len = 0;
+ return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL;
+}
+
+static inline void *skb_gro_mac_header(struct sk_buff *skb)
+{
+ return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb);
+}
+
+static inline void *skb_gro_network_header(struct sk_buff *skb)
+{
+ return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) +
+ skb_network_offset(skb);
+}
+
+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);
* Incoming packets are placed on per-cpu queues so that
* no locking is needed.
*/
-
-struct softnet_data
-{
- struct net_device *output_queue;
+struct softnet_data {
+ struct Qdisc *output_queue;
struct sk_buff_head input_pkt_queue;
struct list_head poll_list;
struct sk_buff *completion_queue;
- struct net_device backlog_dev; /* Sorry. 8) */
-#ifdef CONFIG_NET_DMA
- struct dma_chan *net_dma;
-#endif
+ struct napi_struct backlog;
};
DECLARE_PER_CPU(struct softnet_data,softnet_data);
#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);
}
+/**
+ * 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_tx_start_queue(netdev_get_tx_queue(dev, 0));
}
-static inline void netif_wake_queue(struct net_device *dev)
+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(__LINK_STATE_XOFF, &dev->state);
+ netif_tx_start_queue(dev_queue);
return;
}
#endif
- if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state))
- __netif_schedule(dev);
+ if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state))
+ __netif_schedule(dev_queue->qdisc);
}
+/**
+ * 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)
+{
+ 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);
+ }
+}
+
+static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
+{
+ set_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
+}
+
+/**
+ * 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)
{
- 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);
}
+/**
+ * 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);
+ 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);
}
+/**
+ * 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);
* 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
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
+
+ netif_tx_start_queue(txq);
}
+/**
+ * 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 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
+ netif_tx_stop_queue(txq);
}
-static inline int netif_subqueue_stopped(const struct net_device *dev,
+/**
+ * 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
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
+
+ return netif_tx_queue_stopped(txq);
+}
+
+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
+ 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);
}
+/**
+ * netif_is_multiqueue - test if device has multiple transmit queues
+ * @dev: network device
+ *
+ * Check if device has multiple transmit queues
+ */
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
- * is executing from interrupt context.
+ * is executing from hardware interrupt context or with hardware interrupts
+ * disabled.
*/
-static inline void dev_kfree_skb_irq(struct sk_buff *skb)
-{
- 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);
- }
-}
+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.
+ * from either hardware interrupt or other context, with hardware interrupts
+ * either disabled or enabled.
*/
extern void dev_kfree_skb_any(struct sk_buff *skb);
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 gro_result_t dev_gro_receive(struct napi_struct *napi,
+ struct sk_buff *skb);
+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 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 gro_result_t napi_gro_frags(struct napi_struct *napi);
+
+static inline void napi_free_frags(struct napi_struct *napi)
+{
+ kfree_skb(napi->skb);
+ napi->skb = NULL;
+}
+
+extern void netif_nit_deliver(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_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);
-
-extern void dev_init(void);
+ 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;
/* 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);
+extern void linkwatch_forget_dev(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 unsigned long dev_trans_start(struct net_device *dev);
+
extern void __netdev_watchdog_up(struct net_device *dev);
extern void netif_carrier_on(struct net_device *dev);
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);
}
-static inline int netif_oper_up(const struct net_device *dev) {
+/**
+ * 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)
+static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu)
{
- return !test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state);
+ spin_lock(&txq->_xmit_lock);
+ txq->xmit_lock_owner = cpu;
}
-/* Test if receive needs to be scheduled but only if up */
-static inline int netif_rx_schedule_prep(struct net_device *dev)
+static inline void __netif_tx_lock_bh(struct netdev_queue *txq)
{
- return netif_running(dev) && __netif_rx_schedule_prep(dev);
+ spin_lock_bh(&txq->_xmit_lock);
+ txq->xmit_lock_owner = smp_processor_id();
}
-/* Add interface to tail of rx poll list. This assumes that _prep has
- * already been called and returned 1.
- */
+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;
+}
-extern void __netif_rx_schedule(struct net_device *dev);
+static inline void __netif_tx_unlock(struct netdev_queue *txq)
+{
+ txq->xmit_lock_owner = -1;
+ spin_unlock(&txq->_xmit_lock);
+}
-/* Try to reschedule poll. Called by irq handler. */
+static inline void __netif_tx_unlock_bh(struct netdev_queue *txq)
+{
+ txq->xmit_lock_owner = -1;
+ spin_unlock_bh(&txq->_xmit_lock);
+}
-static inline void netif_rx_schedule(struct net_device *dev)
+static inline void txq_trans_update(struct netdev_queue *txq)
{
- if (netif_rx_schedule_prep(dev))
- __netif_rx_schedule(dev);
+ if (txq->xmit_lock_owner != -1)
+ txq->trans_start = jiffies;
}
-/* Try to reschedule poll. Called by dev->poll() after netif_rx_complete().
- * Do not inline this?
+/**
+ * netif_tx_lock - grab network device transmit lock
+ * @dev: network device
+ *
+ * Get network device transmit lock
*/
-static inline int netif_rx_reschedule(struct net_device *dev, int undo)
+static inline void netif_tx_lock(struct net_device *dev)
{
- 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);
- return 1;
+ 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);
}
- 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)
+static inline void netif_tx_lock_bh(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);
+ local_bh_disable();
+ netif_tx_lock(dev);
}
-/* 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_tx_unlock(struct net_device *dev)
{
- unsigned long flags;
+ unsigned int i;
- local_irq_save(flags);
- __netif_rx_complete(dev);
- local_irq_restore(flags);
+ 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);
+ netif_schedule_queue(txq);
+ }
+ spin_unlock(&dev->tx_global_lock);
}
-static inline void netif_poll_disable(struct net_device *dev)
+static inline void netif_tx_unlock_bh(struct net_device *dev)
{
- while (test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state))
- /* No hurry. */
- schedule_timeout_interruptible(1);
+ netif_tx_unlock(dev);
+ local_bh_enable();
}
-static inline void netif_poll_enable(struct net_device *dev)
-{
- smp_mb__before_clear_bit();
- clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
+#define HARD_TX_LOCK(dev, txq, cpu) { \
+ if ((dev->features & NETIF_F_LLTX) == 0) { \
+ __netif_tx_lock(txq, cpu); \
+ } \
}
-static inline void netif_tx_lock(struct net_device *dev)
-{
- spin_lock(&dev->_xmit_lock);
- dev->xmit_lock_owner = smp_processor_id();
+#define HARD_TX_UNLOCK(dev, txq) { \
+ if ((dev->features & NETIF_F_LLTX) == 0) { \
+ __netif_tx_unlock(txq); \
+ } \
}
-static inline void netif_tx_lock_bh(struct net_device *dev)
+static inline void netif_tx_disable(struct net_device *dev)
{
- spin_lock_bh(&dev->_xmit_lock);
- dev->xmit_lock_owner = smp_processor_id();
+ 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 int netif_tx_trylock(struct net_device *dev)
+static inline void netif_addr_lock(struct net_device *dev)
{
- int ok = spin_trylock(&dev->_xmit_lock);
- if (likely(ok))
- dev->xmit_lock_owner = smp_processor_id();
- return ok;
+ spin_lock(&dev->addr_list_lock);
}
-static inline void netif_tx_unlock(struct net_device *dev)
+static inline void netif_addr_lock_bh(struct net_device *dev)
{
- dev->xmit_lock_owner = -1;
- spin_unlock(&dev->_xmit_lock);
+ spin_lock_bh(&dev->addr_list_lock);
}
-static inline void netif_tx_unlock_bh(struct net_device *dev)
+static inline void netif_addr_unlock(struct net_device *dev)
{
- dev->xmit_lock_owner = -1;
- spin_unlock_bh(&dev->_xmit_lock);
+ spin_unlock(&dev->addr_list_lock);
}
-static inline void netif_tx_disable(struct net_device *dev)
+static inline void netif_addr_unlock_bh(struct net_device *dev)
{
- netif_tx_lock_bh(dev);
- netif_stop_queue(dev);
- netif_tx_unlock_bh(dev);
+ spin_unlock_bh(&dev->addr_list_lock);
}
+/*
+ * 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_addrs.list, list)
+
/* These functions live elsewhere (drivers/net/net_init.c, but related) */
extern void ether_setup(struct net_device *dev);
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 device addresses handling */
+extern int dev_addr_add(struct net_device *dev, unsigned char *addr,
+ unsigned char addr_type);
+extern int dev_addr_del(struct net_device *dev, unsigned char *addr,
+ unsigned char addr_type);
+extern int dev_addr_add_multiple(struct net_device *to_dev,
+ struct net_device *from_dev,
+ unsigned char addr_type);
+extern int dev_addr_del_multiple(struct net_device *to_dev,
+ struct net_device *from_dev,
+ unsigned char addr_type);
+
/* 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_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 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 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 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,
+ unsigned long event);
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 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;
extern int netdev_set_master(struct net_device *dev, struct net_device *master);
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);
+unsigned long netdev_increment_features(unsigned long all, unsigned long one,
+ 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)
{
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)
unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
}
+static inline void netif_set_gso_max_size(struct net_device *dev,
+ unsigned int size)
+{
+ 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.
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) {
+ if (master->priv_flags & IFF_MASTER_ARPMON)
+ dev->last_rx = jiffies;
- 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_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 (master->priv_flags & IFF_MASTER_8023AD &&
- skb->protocol == __constant_htons(ETH_P_SLOW))
- return 0;
- return 1;
+ if (dev->priv_flags & IFF_SLAVE_INACTIVE) {
+ if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
+ skb->protocol == __cpu_to_be16(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 == __cpu_to_be16(ETH_P_SLOW))
+ return 0;
+
+ return 1;
+ }
}
return 0;
}
+extern struct pernet_operations __net_initdata loopback_net_ops;
+
+static inline int dev_ethtool_get_settings(struct net_device *dev,
+ struct ethtool_cmd *cmd)
+{
+ if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings)
+ return -EOPNOTSUPP;
+ return dev->ethtool_ops->get_settings(dev, cmd);
+}
+
+static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev)
+{
+ if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum)
+ return 0;
+ return dev->ethtool_ops->get_rx_csum(dev);
+}
+
+static inline u32 dev_ethtool_get_flags(struct net_device *dev)
+{
+ if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags)
+ return 0;
+ return dev->ethtool_ops->get_flags(dev);
+}
#endif /* __KERNEL__ */
-#endif /* _LINUX_DEV_H */
+#endif /* _LINUX_NETDEVICE_H */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff