| /* |
| * INET An implementation of the TCP/IP protocol suite for the LINUX |
| * operating system. INET is implemented using the BSD Socket |
| * interface as the means of communication with the user level. |
| * |
| * Definitions for the Interfaces handler. |
| * |
| * Version: @(#)dev.h 1.0.10 08/12/93 |
| * |
| * Authors: Ross Biro, <bir7@leland.Stanford.Edu> |
| * 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> |
| * Bjorn Ekwall. <bj0rn@blox.se> |
| * Pekka Riikonen <priikone@poseidon.pspt.fi> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Moved to /usr/include/linux for NET3 |
| */ |
| #ifndef _LINUX_NETDEVICE_H |
| #define _LINUX_NETDEVICE_H |
| |
| #include <linux/if.h> |
| #include <linux/if_ether.h> |
| #include <linux/if_packet.h> |
| |
| #include <asm/atomic.h> |
| #include <asm/cache.h> |
| #include <asm/byteorder.h> |
| |
| #ifdef __KERNEL__ |
| #include <linux/config.h> |
| #ifdef CONFIG_NET_PROFILE |
| #include <net/profile.h> |
| #endif |
| |
| struct divert_blk; |
| struct vlan_group; |
| |
| #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev |
| functions are available. */ |
| |
| #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_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) |
| |
| #endif |
| |
| #define MAX_ADDR_LEN 8 /* Largest hardware address length */ |
| |
| /* |
| * 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 |
| #else |
| #define LL_MAX_HEADER 48 |
| #endif |
| #endif |
| |
| #if !defined(CONFIG_NET_IPIP) && \ |
| !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE) |
| #define MAX_HEADER LL_MAX_HEADER |
| #else |
| #define MAX_HEADER (LL_MAX_HEADER + 48) |
| #endif |
| |
| /* |
| * Network device statistics. Akin to the 2.0 ether stats but |
| * with byte counters. |
| */ |
| |
| 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 */ |
| unsigned long tx_bytes; /* total bytes transmitted */ |
| unsigned long rx_errors; /* bad packets received */ |
| unsigned long tx_errors; /* packet transmit problems */ |
| unsigned long rx_dropped; /* no space in linux buffers */ |
| unsigned long tx_dropped; /* no space available in linux */ |
| unsigned long multicast; /* multicast packets received */ |
| unsigned long collisions; |
| |
| /* detailed rx_errors: */ |
| unsigned long rx_length_errors; |
| unsigned long rx_over_errors; /* receiver ring buff overflow */ |
| unsigned long rx_crc_errors; /* recved pkt with crc error */ |
| unsigned long rx_frame_errors; /* recv'd frame alignment error */ |
| unsigned long rx_fifo_errors; /* recv'r fifo overrun */ |
| unsigned long rx_missed_errors; /* receiver missed packet */ |
| |
| /* detailed tx_errors */ |
| unsigned long tx_aborted_errors; |
| unsigned long tx_carrier_errors; |
| unsigned long tx_fifo_errors; |
| unsigned long tx_heartbeat_errors; |
| unsigned long tx_window_errors; |
| |
| /* for cslip etc */ |
| unsigned long rx_compressed; |
| unsigned long tx_compressed; |
| }; |
| |
| |
| /* Media selection options. */ |
| enum { |
| IF_PORT_UNKNOWN = 0, |
| IF_PORT_10BASE2, |
| IF_PORT_10BASET, |
| IF_PORT_AUI, |
| IF_PORT_100BASET, |
| IF_PORT_100BASETX, |
| IF_PORT_100BASEFX |
| }; |
| |
| #ifdef __KERNEL__ |
| |
| extern const char *if_port_text[]; |
| |
| #include <linux/cache.h> |
| #include <linux/skbuff.h> |
| |
| struct neighbour; |
| struct neigh_parms; |
| struct sk_buff; |
| |
| struct netif_rx_stats |
| { |
| unsigned total; |
| unsigned dropped; |
| unsigned time_squeeze; |
| unsigned throttled; |
| unsigned fastroute_hit; |
| unsigned fastroute_success; |
| unsigned fastroute_defer; |
| unsigned fastroute_deferred_out; |
| unsigned fastroute_latency_reduction; |
| unsigned cpu_collision; |
| } __attribute__ ((__aligned__(SMP_CACHE_BYTES))); |
| |
| extern struct netif_rx_stats netdev_rx_stat[]; |
| |
| |
| /* |
| * We tag multicasts with these structures. |
| */ |
| |
| struct dev_mc_list |
| { |
| struct dev_mc_list *next; |
| __u8 dmi_addr[MAX_ADDR_LEN]; |
| unsigned char dmi_addrlen; |
| int dmi_users; |
| int dmi_gusers; |
| }; |
| |
| struct hh_cache |
| { |
| struct hh_cache *hh_next; /* Next entry */ |
| atomic_t hh_refcnt; /* number of users */ |
| unsigned short hh_type; /* protocol identifier, f.e ETH_P_IP |
| * NOTE: For VLANs, this will be the |
| * encapuslated type. --BLG |
| */ |
| int hh_len; /* length of header */ |
| int (*hh_output)(struct sk_buff *skb); |
| rwlock_t hh_lock; |
| /* cached hardware header; allow for machine alignment needs. */ |
| unsigned long hh_data[16/sizeof(unsigned long)]; |
| }; |
| |
| /* 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, |
| __LINK_STATE_START, |
| __LINK_STATE_PRESENT, |
| __LINK_STATE_SCHED, |
| __LINK_STATE_NOCARRIER, |
| __LINK_STATE_RX_SCHED |
| }; |
| |
| |
| /* |
| * This structure holds at boot time configured netdevice settings. They |
| * are then used in the device probing. |
| */ |
| struct netdev_boot_setup { |
| char name[IFNAMSIZ]; |
| struct ifmap map; |
| }; |
| #define NETDEV_BOOT_SETUP_MAX 8 |
| |
| |
| /* |
| * 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 |
| * almost every data structure used in the INET module. |
| * |
| * FIXME: cleanup struct net_device such that network protocol info |
| * moves out. |
| */ |
| |
| struct net_device |
| { |
| |
| /* |
| * This is the first field of the "visible" part of this structure |
| * (i.e. as seen by users in the "Space.c" file). It is the name |
| * the interface. |
| */ |
| char name[IFNAMSIZ]; |
| |
| /* |
| * I/O specific fields |
| * FIXME: Merge these and struct ifmap into one |
| */ |
| unsigned long mem_end; /* shared mem end */ |
| unsigned long mem_start; /* shared mem start */ |
| unsigned long base_addr; /* device I/O address */ |
| unsigned int irq; /* device IRQ number */ |
| |
| /* |
| * Some hardware also needs these fields, but they are not |
| * part of the usual set specified in Space.c. |
| */ |
| |
| unsigned char if_port; /* Selectable AUI, TP,..*/ |
| unsigned char dma; /* DMA channel */ |
| |
| unsigned long state; |
| |
| struct net_device *next; |
| |
| /* The device initialization function. Called only once. */ |
| int (*init)(struct net_device *dev); |
| |
| /* ------- Fields preinitialized in Space.c finish here ------- */ |
| |
| struct net_device *next_sched; |
| |
| /* Interface index. Unique device identifier */ |
| int ifindex; |
| int iflink; |
| |
| |
| struct net_device_stats* (*get_stats)(struct net_device *dev); |
| struct iw_statistics* (*get_wireless_stats)(struct net_device *dev); |
| |
| /* List of functions to handle Wireless Extensions (instead of ioctl). |
| * See <net/iw_handler.h> for details. Jean II */ |
| struct iw_handler_def * wireless_handlers; |
| |
| /* |
| * 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). |
| */ |
| |
| /* These may be needed for future network-power-down code. */ |
| unsigned long trans_start; /* Time (in jiffies) of last Tx */ |
| unsigned long last_rx; /* Time of last Rx */ |
| |
| unsigned short flags; /* interface flags (a la BSD) */ |
| unsigned short gflags; |
| unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ |
| unsigned short unused_alignment_fixer; /* Because we need priv_flags, |
| * and we want to be 32-bit aligned. |
| */ |
| |
| unsigned mtu; /* interface MTU value */ |
| unsigned short type; /* interface hardware type */ |
| unsigned short hard_header_len; /* hardware hdr length */ |
| void *priv; /* pointer to private data */ |
| |
| struct net_device *master; /* Pointer to master device of a group, |
| * which this device is member of. |
| */ |
| |
| /* Interface address info. */ |
| unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ |
| unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address */ |
| unsigned char addr_len; /* hardware address length */ |
| |
| struct dev_mc_list *mc_list; /* Multicast mac addresses */ |
| int mc_count; /* Number of installed mcasts */ |
| int promiscuity; |
| int allmulti; |
| |
| int watchdog_timeo; |
| struct timer_list watchdog_timer; |
| |
| /* Protocol specific pointers */ |
| |
| void *atalk_ptr; /* AppleTalk link */ |
| void *ip_ptr; /* IPv4 specific data */ |
| void *dn_ptr; /* DECnet specific data */ |
| void *ip6_ptr; /* IPv6 specific data */ |
| void *ec_ptr; /* Econet specific data */ |
| |
| struct list_head poll_list; /* Link to poll list */ |
| int quota; |
| int weight; |
| |
| struct Qdisc *qdisc; |
| struct Qdisc *qdisc_sleeping; |
| struct Qdisc *qdisc_list; |
| struct Qdisc *qdisc_ingress; |
| unsigned long tx_queue_len; /* Max frames per queue allowed */ |
| |
| /* hard_start_xmit synchronizer */ |
| spinlock_t xmit_lock; |
| /* cpu id of processor entered to hard_start_xmit or -1, |
| if nobody entered there. |
| */ |
| int xmit_lock_owner; |
| /* device queue lock */ |
| spinlock_t queue_lock; |
| /* Number of references to this device */ |
| atomic_t refcnt; |
| /* The flag marking that device is unregistered, but held by an user */ |
| int deadbeaf; |
| |
| /* Net device features */ |
| int features; |
| #define NETIF_F_SG 1 /* Scatter/gather IO. */ |
| #define NETIF_F_IP_CSUM 2 /* Can checksum only TCP/UDP over IPv4. */ |
| #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ |
| #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ |
| #define NETIF_F_DYNALLOC 16 /* Self-dectructable device. */ |
| #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */ |
| #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */ |
| #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */ |
| #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */ |
| #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */ |
| #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */ |
| |
| /* 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); |
| int (*hard_start_xmit) (struct sk_buff *skb, |
| struct net_device *dev); |
| int (*poll) (struct net_device *dev, int *quota); |
| 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_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 *); |
| int (*accept_fastpath)(struct net_device *, struct dst_entry*); |
| |
| /* open/release and usage marking */ |
| struct module *owner; |
| |
| /* bridge stuff */ |
| struct net_bridge_port *br_port; |
| |
| #ifdef CONFIG_NET_FASTROUTE |
| #define NETDEV_FASTROUTE_HMASK 0xF |
| /* Semi-private data. Keep it at the end of device struct. */ |
| rwlock_t fastpath_lock; |
| struct dst_entry *fastpath[NETDEV_FASTROUTE_HMASK+1]; |
| #endif |
| #ifdef CONFIG_NET_DIVERT |
| /* this will get initialized at each interface type init routine */ |
| struct divert_blk *divert; |
| #endif /* CONFIG_NET_DIVERT */ |
| }; |
| |
| |
| struct packet_type |
| { |
| unsigned short type; /* This is really htons(ether_type). */ |
| struct net_device *dev; /* NULL is wildcarded here */ |
| int (*func) (struct sk_buff *, struct net_device *, |
| struct packet_type *); |
| void *data; /* Private to the packet type */ |
| struct packet_type *next; |
| }; |
| |
| |
| #include <linux/interrupt.h> |
| #include <linux/notifier.h> |
| |
| extern struct net_device loopback_dev; /* The loopback */ |
| extern struct net_device *dev_base; /* All devices */ |
| extern rwlock_t dev_base_lock; /* Device list lock */ |
| |
| extern int netdev_boot_setup_add(char *name, struct ifmap *map); |
| extern int netdev_boot_setup_check(struct net_device *dev); |
| extern struct net_device *dev_getbyhwaddr(unsigned short type, char *hwaddr); |
| extern void dev_add_pack(struct packet_type *pt); |
| extern void dev_remove_pack(struct packet_type *pt); |
| extern int dev_get(const char *name); |
| 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_alloc(const char *name, int *err); |
| extern int dev_alloc_name(struct net_device *dev, const char *name); |
| extern int dev_open(struct net_device *dev); |
| extern int dev_close(struct net_device *dev); |
| extern int dev_queue_xmit(struct sk_buff *skb); |
| extern int register_netdevice(struct net_device *dev); |
| extern int unregister_netdevice(struct net_device *dev); |
| extern int register_netdevice_notifier(struct notifier_block *nb); |
| extern int unregister_netdevice_notifier(struct notifier_block *nb); |
| extern int dev_new_index(void); |
| extern struct net_device *dev_get_by_index(int ifindex); |
| extern struct net_device *__dev_get_by_index(int ifindex); |
| extern int dev_restart(struct net_device *dev); |
| |
| typedef int gifconf_func_t(struct net_device * dev, char * bufptr, int len); |
| extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); |
| static inline int unregister_gifconf(unsigned int family) |
| { |
| return register_gifconf(family, 0); |
| } |
| |
| /* |
| * Incoming packets are placed on per-cpu queues so that |
| * no locking is needed. |
| */ |
| |
| struct softnet_data |
| { |
| int throttle; |
| int cng_level; |
| int avg_blog; |
| struct sk_buff_head input_pkt_queue; |
| struct list_head poll_list; |
| struct net_device *output_queue; |
| struct sk_buff *completion_queue; |
| |
| struct net_device backlog_dev; /* Sorry. 8) */ |
| } __attribute__((__aligned__(SMP_CACHE_BYTES))); |
| |
| |
| extern struct softnet_data softnet_data[NR_CPUS]; |
| |
| #define HAVE_NETIF_QUEUE |
| |
| static inline void __netif_schedule(struct net_device *dev) |
| { |
| if (!test_and_set_bit(__LINK_STATE_SCHED, &dev->state)) { |
| unsigned long flags; |
| int cpu = smp_processor_id(); |
| |
| local_irq_save(flags); |
| dev->next_sched = softnet_data[cpu].output_queue; |
| softnet_data[cpu].output_queue = dev; |
| cpu_raise_softirq(cpu, NET_TX_SOFTIRQ); |
| local_irq_restore(flags); |
| } |
| } |
| |
| static inline void netif_schedule(struct net_device *dev) |
| { |
| if (!test_bit(__LINK_STATE_XOFF, &dev->state)) |
| __netif_schedule(dev); |
| } |
| |
| static inline void netif_start_queue(struct net_device *dev) |
| { |
| clear_bit(__LINK_STATE_XOFF, &dev->state); |
| } |
| |
| static inline void netif_wake_queue(struct net_device *dev) |
| { |
| if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state)) |
| __netif_schedule(dev); |
| } |
| |
| static inline void netif_stop_queue(struct net_device *dev) |
| { |
| set_bit(__LINK_STATE_XOFF, &dev->state); |
| } |
| |
| static inline int netif_queue_stopped(struct net_device *dev) |
| { |
| return test_bit(__LINK_STATE_XOFF, &dev->state); |
| } |
| |
| static inline int netif_running(struct net_device *dev) |
| { |
| return test_bit(__LINK_STATE_START, &dev->state); |
| } |
| |
| |
| /* Use this variant when it is known for sure that it |
| * is executing from interrupt context. |
| */ |
| static inline void dev_kfree_skb_irq(struct sk_buff *skb) |
| { |
| if (atomic_dec_and_test(&skb->users)) { |
| int cpu =smp_processor_id(); |
| unsigned long flags; |
| |
| local_irq_save(flags); |
| skb->next = softnet_data[cpu].completion_queue; |
| softnet_data[cpu].completion_queue = skb; |
| cpu_raise_softirq(cpu, NET_TX_SOFTIRQ); |
| local_irq_restore(flags); |
| } |
| } |
| |
| /* Use this variant in places where it could be invoked |
| * either from interrupt or non-interrupt context. |
| */ |
| static inline void dev_kfree_skb_any(struct sk_buff *skb) |
| { |
| if (in_irq()) |
| dev_kfree_skb_irq(skb); |
| else |
| dev_kfree_skb(skb); |
| } |
| |
| extern void net_call_rx_atomic(void (*fn)(void)); |
| #define HAVE_NETIF_RX 1 |
| extern int netif_rx(struct sk_buff *skb); |
| #define HAVE_NETIF_RECEIVE_SKB 1 |
| extern int netif_receive_skb(struct sk_buff *skb); |
| extern int dev_ioctl(unsigned int cmd, void *); |
| extern int dev_change_flags(struct net_device *, unsigned); |
| extern void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev); |
| |
| extern void dev_init(void); |
| |
| extern int netdev_nit; |
| |
| /* Post buffer to the network code from _non interrupt_ context. |
| * see net/core/dev.c for netif_rx description. |
| */ |
| static inline int netif_rx_ni(struct sk_buff *skb) |
| { |
| int err = netif_rx(skb); |
| if (softirq_pending(smp_processor_id())) |
| do_softirq(); |
| return err; |
| } |
| |
| static inline void dev_init_buffers(struct net_device *dev) |
| { |
| /* WILL BE REMOVED IN 2.5.0 */ |
| } |
| |
| extern int netdev_finish_unregister(struct net_device *dev); |
| |
| static inline void dev_put(struct net_device *dev) |
| { |
| if (atomic_dec_and_test(&dev->refcnt)) |
| netdev_finish_unregister(dev); |
| } |
| |
| #define __dev_put(dev) atomic_dec(&(dev)->refcnt) |
| #define dev_hold(dev) atomic_inc(&(dev)->refcnt) |
| |
| /* Carrier loss detection, dial on demand. The functions netif_carrier_on |
| * and _off may be called from IRQ context, but it is caller |
| * who is responsible for serialization of these calls. |
| */ |
| |
| static inline int netif_carrier_ok(struct net_device *dev) |
| { |
| return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); |
| } |
| |
| extern void __netdev_watchdog_up(struct net_device *dev); |
| |
| static inline void netif_carrier_on(struct net_device *dev) |
| { |
| clear_bit(__LINK_STATE_NOCARRIER, &dev->state); |
| if (netif_running(dev)) |
| __netdev_watchdog_up(dev); |
| } |
| |
| static inline void netif_carrier_off(struct net_device *dev) |
| { |
| set_bit(__LINK_STATE_NOCARRIER, &dev->state); |
| } |
| |
| /* Hot-plugging. */ |
| static inline int netif_device_present(struct net_device *dev) |
| { |
| return test_bit(__LINK_STATE_PRESENT, &dev->state); |
| } |
| |
| static inline void netif_device_detach(struct net_device *dev) |
| { |
| if (test_and_clear_bit(__LINK_STATE_PRESENT, &dev->state) && |
| netif_running(dev)) { |
| netif_stop_queue(dev); |
| } |
| } |
| |
| static inline void netif_device_attach(struct net_device *dev) |
| { |
| if (!test_and_set_bit(__LINK_STATE_PRESENT, &dev->state) && |
| netif_running(dev)) { |
| netif_wake_queue(dev); |
| __netdev_watchdog_up(dev); |
| } |
| } |
| |
| /* |
| * Network interface message level settings |
| */ |
| #define HAVE_NETIF_MSG 1 |
| |
| enum { |
| NETIF_MSG_DRV = 0x0001, |
| NETIF_MSG_PROBE = 0x0002, |
| NETIF_MSG_LINK = 0x0004, |
| NETIF_MSG_TIMER = 0x0008, |
| NETIF_MSG_IFDOWN = 0x0010, |
| NETIF_MSG_IFUP = 0x0020, |
| NETIF_MSG_RX_ERR = 0x0040, |
| NETIF_MSG_TX_ERR = 0x0080, |
| NETIF_MSG_TX_QUEUED = 0x0100, |
| NETIF_MSG_INTR = 0x0200, |
| NETIF_MSG_TX_DONE = 0x0400, |
| NETIF_MSG_RX_STATUS = 0x0800, |
| NETIF_MSG_PKTDATA = 0x1000, |
| }; |
| |
| #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV) |
| #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE) |
| #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK) |
| #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER) |
| #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN) |
| #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP) |
| #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR) |
| #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR) |
| #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED) |
| #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR) |
| #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE) |
| #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS) |
| #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA) |
| |
| /* Schedule rx intr now? */ |
| |
| static inline int netif_rx_schedule_prep(struct net_device *dev) |
| { |
| return netif_running(dev) && |
| !test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state); |
| } |
| |
| /* Add interface to tail of rx poll list. This assumes that _prep has |
| * already been called and returned 1. |
| */ |
| |
| static inline void __netif_rx_schedule(struct net_device *dev) |
| { |
| unsigned long flags; |
| int cpu = smp_processor_id(); |
| |
| local_irq_save(flags); |
| dev_hold(dev); |
| list_add_tail(&dev->poll_list, &softnet_data[cpu].poll_list); |
| if (dev->quota < 0) |
| dev->quota += dev->weight; |
| else |
| dev->quota = dev->weight; |
| __cpu_raise_softirq(cpu, NET_RX_SOFTIRQ); |
| local_irq_restore(flags); |
| } |
| |
| /* Try to reschedule poll. Called by irq handler. */ |
| |
| static inline void netif_rx_schedule(struct net_device *dev) |
| { |
| if (netif_rx_schedule_prep(dev)) |
| __netif_rx_schedule(dev); |
| } |
| |
| /* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). |
| * Do not inline this? |
| */ |
| static inline int netif_rx_reschedule(struct net_device *dev, int undo) |
| { |
| if (netif_rx_schedule_prep(dev)) { |
| unsigned long flags; |
| int cpu = smp_processor_id(); |
| |
| dev->quota += undo; |
| |
| local_irq_save(flags); |
| list_add_tail(&dev->poll_list, &softnet_data[cpu].poll_list); |
| __cpu_raise_softirq(cpu, NET_RX_SOFTIRQ); |
| local_irq_restore(flags); |
| return 1; |
| } |
| return 0; |
| } |
| |
| /* 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) |
| { |
| unsigned long flags; |
| |
| local_irq_save(flags); |
| if (!test_bit(__LINK_STATE_RX_SCHED, &dev->state)) BUG(); |
| list_del(&dev->poll_list); |
| clear_bit(__LINK_STATE_RX_SCHED, &dev->state); |
| local_irq_restore(flags); |
| } |
| |
| /* These functions live elsewhere (drivers/net/net_init.c, but related) */ |
| |
| extern void ether_setup(struct net_device *dev); |
| extern void fddi_setup(struct net_device *dev); |
| extern void tr_setup(struct net_device *dev); |
| extern void fc_setup(struct net_device *dev); |
| extern void fc_freedev(struct net_device *dev); |
| /* Support for loadable net-drivers */ |
| extern int register_netdev(struct net_device *dev); |
| extern void unregister_netdev(struct net_device *dev); |
| /* Functions used for multicast support */ |
| extern void dev_mc_upload(struct net_device *dev); |
| extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all); |
| extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly); |
| extern void dev_mc_discard(struct net_device *dev); |
| extern void dev_set_promiscuity(struct net_device *dev, int inc); |
| extern void dev_set_allmulti(struct net_device *dev, int inc); |
| extern void netdev_state_change(struct net_device *dev); |
| /* Load a device via the kmod */ |
| extern void dev_load(const char *name); |
| extern void dev_mcast_init(void); |
| extern int netdev_register_fc(struct net_device *dev, void (*stimul)(struct net_device *dev)); |
| extern void netdev_unregister_fc(int bit); |
| extern int netdev_max_backlog; |
| extern int weight_p; |
| extern unsigned long netdev_fc_xoff; |
| extern atomic_t netdev_dropping; |
| extern int netdev_set_master(struct net_device *dev, struct net_device *master); |
| extern struct sk_buff * skb_checksum_help(struct sk_buff *skb); |
| #ifdef CONFIG_NET_FASTROUTE |
| extern int netdev_fastroute; |
| extern int netdev_fastroute_obstacles; |
| extern void dev_clear_fastroute(struct net_device *dev); |
| #endif |
| |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* _LINUX_DEV_H */ |
