http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/netdevice.h

/* * 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 * 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> #ifdef __KERNEL__ #include <asm/atomic.h> #include <asm/cache.h> #include <asm/byteorder.h> #include <linux/config.h> #include <linux/device.h> #include <linux/percpu.h> struct divert_blk; struct vlan_group; struct ethtool_ops; struct netpoll_info; /* source back-compat hooks */ #define SET_ETHTOOL_OPS(netdev,ops) \ ( (netdev)->ethtool_ops = (ops) ) #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev functions are available. */ #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_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) #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 */ /* * 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__ #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 cpu_collision; }; DECLARE_PER_CPU(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. */ #define HH_DATA_MOD 16 #define HH_DATA_OFF(__len) \ (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1)) #define HH_DATA_ALIGN(__len) \ (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1)) unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)]; }; /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much. * Alternative is: * dev->hard_header_len ? (dev->hard_header_len + * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0 * * We could use other alignment values, but we must maintain the * relationship HH alignment <= LL alignment. */ #define LL_RESERVED_SPACE(dev) \ (((dev)->hard_header_len&~(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) /* 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, __LINK_STATE_LINKWATCH_PENDING }; /* * 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 extern int __init netdev_boot_setup(char *str); /* * 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]; /* device name hash chain */ struct hlist_node name_hlist; /* * 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 ------- */ /* Net device features */ unsigned long features; #define NETIF_F_SG 1 /* Scatter/gather IO. */ #define NETIF_F_IP_CSUM 2 /* Can checksum only TCP/UDP over IPv4. */ #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */ #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */ #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 */ #define NETIF_F_TSO 2048 /* Can offload TCP/IP segmentation */ #define NETIF_F_LLTX 4096 /* LockLess TX */ #define NETIF_F_UFO 8192 /* Can offload UDP Large Send*/ 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 */ const struct iw_handler_def * wireless_handlers; /* Instance data managed by the core of Wireless Extensions. */ struct iw_public_data * wireless_data; 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). */ unsigned short flags; /* interface flags (a la BSD) */ unsigned short gflags; unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ unsigned short padded; /* How much padding added by alloc_netdev() */ unsigned mtu; /* interface MTU value */ unsigned short type; /* interface hardware type */ unsigned short hard_header_len; /* hardware hdr length */ struct net_device *master; /* Pointer to master device of a group, * which this device is member of. */ /* Interface address info. */ unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */ unsigned char addr_len; /* hardware address length */ unsigned short dev_id; /* for shared network cards */ struct dev_mc_list *mc_list; /* Multicast mac addresses */ int mc_count; /* Number of installed mcasts */ int promiscuity; int allmulti; /* 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 */ void *ax25_ptr; /* AX.25 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 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 */ /* ingress path synchronizer */ spinlock_t ingress_lock; struct Qdisc *qdisc_ingress; /* * 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. */ 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; /* delayed register/unregister */ struct list_head todo_list; /* device index hash chain */ struct hlist_node index_hlist; /* register/unregister state machine */ enum { NETREG_UNINITIALIZED=0, NETREG_REGISTERING, /* called register_netdevice */ NETREG_REGISTERED, /* completed register todo */ NETREG_UNREGISTERING, /* called unregister_netdevice */ NETREG_UNREGISTERED, /* completed unregister todo */ NETREG_RELEASED, /* called free_netdev */ } 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_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 *); #ifdef CONFIG_NETPOLL struct netpoll_info *npinfo; #endif #ifdef CONFIG_NET_POLL_CONTROLLER void (*poll_controller)(struct net_device *dev); #endif /* bridge stuff */ struct net_bridge_port *br_port; #ifdef CONFIG_NET_DIVERT /* this will get initialized at each interface type init routine */ struct divert_blk *divert; #endif /* CONFIG_NET_DIVERT */ /* class/net/name entry */ struct class_device class_dev; }; #define NETDEV_ALIGN 32 #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1) static inline void *netdev_priv(struct net_device *dev) { return (char *)dev + ((sizeof(struct net_device) + NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); } #define SET_MODULE_OWNER(dev) do { } while (0) /* Set the sysfs physical device reference for the network logical device * if set prior to registration will cause a symlink during initialization. */ #define SET_NETDEV_DEV(net, pdev) ((net)->class_dev.dev = (pdev)) struct packet_type { __be16 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 *, struct net_device *); 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 net_device *dev_base; /* All devices */ extern rwlock_t dev_base_lock; /* Device list lock */ 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 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, 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 int dev_alloc_name(struct net_device *dev, const char *name); extern int dev_open(struct net_device *dev); extern int dev_close(struct net_device *dev); extern int dev_queue_xmit(struct sk_buff *skb); extern int register_netdevice(struct net_device *dev); extern int unregister_netdevice(struct net_device *dev); extern void 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 dev_restart(struct net_device *dev); #ifdef CONFIG_NETPOLL_TRAP extern int netpoll_trap(void); #endif typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len); extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); static inline int unregister_gifconf(unsigned int family) { return register_gifconf(family, NULL); } /* * Incoming packets are placed on per-cpu queues so that * no locking is needed. */ struct softnet_data { struct net_device *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) */ }; DECLARE_PER_CPU(struct softnet_data,softnet_data); #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; struct softnet_data *sd; local_irq_save(flags); sd = &__get_cpu_var(softnet_data); dev->next_sched = sd->output_queue; sd->output_queue = dev; raise_softirq_irqoff(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) { #ifdef CONFIG_NETPOLL_TRAP if (netpoll_trap()) return; #endif if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state)) __netif_schedule(dev); } static inline void netif_stop_queue(struct net_device *dev) { #ifdef CONFIG_NETPOLL_TRAP if (netpoll_trap()) return; #endif set_bit(__LINK_STATE_XOFF, &dev->state); } static inline int netif_queue_stopped(const struct net_device *dev) { return test_bit(__LINK_STATE_XOFF, &dev->state); } static inline int netif_running(const 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)) { 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); } } /* 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() || irqs_disabled()) dev_kfree_skb_irq(skb); else dev_kfree_skb(skb); } #define HAVE_NETIF_RX 1 extern int netif_rx(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 int dev_valid_name(const char *name); extern int dev_ioctl(unsigned int cmd, void __user *); extern int dev_ethtool(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_set_mtu(struct net_device *, int); extern int dev_set_mac_address(struct net_device *, struct sockaddr *); extern void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev); extern void dev_init(void); extern int netdev_nit; extern int netdev_budget; /* Called by rtnetlink.c:rtnl_unlock() */ extern void netdev_run_todo(void); static inline void dev_put(struct net_device *dev) { atomic_dec(&dev->refcnt); } #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. */ extern void linkwatch_fire_event(struct net_device *dev); static inline int netif_carrier_ok(const struct net_device *dev) { return !test_bit(__LINK_STATE_NOCARRIER, &dev->state); } 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); /* 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, NETIF_MSG_HW = 0x2000, NETIF_MSG_WOL = 0x4000, }; #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) #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW) #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL) static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) { /* use default */ if (debug_value < 0 || debug_value >= (sizeof(u32) * 8)) return default_msg_enable_bits; if (debug_value == 0) /* no output */ return 0; /* set low N bits */ return (1 << debug_value) - 1; } /* Test if receive needs to be scheduled */ static inline int __netif_rx_schedule_prep(struct net_device *dev) { return !test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state); } /* Test if receive needs to be scheduled but only if up */ static inline int netif_rx_schedule_prep(struct net_device *dev) { return netif_running(dev) && __netif_rx_schedule_prep(dev); } /* 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; local_irq_save(flags); dev_hold(dev); list_add_tail(&dev->poll_list, &__get_cpu_var(softnet_data).poll_list); if (dev->quota < 0) dev->quota += dev->weight; else dev->quota = dev->weight; __raise_softirq_irqoff(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; 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; } 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); 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_irq_restore(flags); } static inline void netif_poll_disable(struct net_device *dev) { while (test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state)) /* No hurry. */ schedule_timeout_interruptible(1); } static inline void netif_poll_enable(struct net_device *dev) { clear_bit(__LINK_STATE_RX_SCHED, &dev->state); } /* same as netif_rx_complete, except that local_irq_save(flags) * has already been issued */ static inline void __netif_rx_complete(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); } static inline void netif_tx_disable(struct net_device *dev) { spin_lock_bh(&dev->xmit_lock); netif_stop_queue(dev); spin_unlock_bh(&dev->xmit_lock); } /* These functions live elsewhere (drivers/net/net_init.c, but related) */ extern void ether_setup(struct net_device *dev); /* Support for loadable net-drivers */ extern struct net_device *alloc_netdev(int sizeof_priv, const char *name, void (*setup)(struct net_device *)); extern 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); 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_mcast_init(void); extern int netdev_max_backlog; extern int weight_p; extern int netdev_set_master(struct net_device *dev, struct net_device *master); extern int skb_checksum_help(struct sk_buff *skb, int inward); #ifdef CONFIG_BUG extern void netdev_rx_csum_fault(struct net_device *dev); #else static inline void netdev_rx_csum_fault(struct net_device *dev) { } #endif /* rx skb timestamps */ extern void net_enable_timestamp(void); extern void net_disable_timestamp(void); #ifdef CONFIG_PROC_FS extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); extern void dev_seq_stop(struct seq_file *seq, void *v); #endif extern void linkwatch_run_queue(void); #endif /* __KERNEL__ */ #endif /* _LINUX_DEV_H */