| /* |
| * 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 <linux/timer.h> |
| #include <linux/delay.h> |
| #include <asm/atomic.h> |
| #include <asm/cache.h> |
| #include <asm/byteorder.h> |
| |
| #include <linux/device.h> |
| #include <linux/percpu.h> |
| #include <linux/dmaengine.h> |
| #include <linux/workqueue.h> |
| |
| #include <net/net_namespace.h> |
| |
| struct vlan_group; |
| struct ethtool_ops; |
| struct netpoll_info; |
| /* 802.11 specific */ |
| struct wireless_dev; |
| /* 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 */ |
| |
| /* 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_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_NET_IPIP_MODULE) && \ |
| !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \ |
| !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \ |
| !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE) |
| #define MAX_HEADER LL_MAX_HEADER |
| #else |
| #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; |
| }; |
| |
| /* |
| * 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); |
| |
| struct dev_addr_list |
| { |
| struct dev_addr_list *next; |
| u8 da_addr[MAX_ADDR_LEN]; |
| u8 da_addrlen; |
| u8 da_synced; |
| int da_users; |
| int da_gusers; |
| }; |
| |
| /* |
| * We tag multicasts with these structures. |
| */ |
| |
| #define dev_mc_list dev_addr_list |
| #define dmi_addr da_addr |
| #define dmi_addrlen da_addrlen |
| #define dmi_users da_users |
| #define dmi_gusers da_gusers |
| |
| struct hh_cache |
| { |
| struct hh_cache *hh_next; /* Next entry */ |
| atomic_t hh_refcnt; /* number of users */ |
| /* |
| * We want hh_output, hh_len, hh_lock and hh_data be a in a separate |
| * cache line on SMP. |
| * They are mostly read, but hh_refcnt may be changed quite frequently, |
| * incurring cache line ping pongs. |
| */ |
| __be16 hh_type ____cacheline_aligned_in_smp; |
| /* protocol identifier, f.e ETH_P_IP |
| * NOTE: For VLANs, this will be the |
| * encapuslated type. --BLG |
| */ |
| u16 hh_len; /* length of header */ |
| int (*hh_output)(struct sk_buff *skb); |
| seqlock_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) |
| |
| 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, |
| __LINK_STATE_START, |
| __LINK_STATE_PRESENT, |
| __LINK_STATE_SCHED, |
| __LINK_STATE_NOCARRIER, |
| __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. |
| */ |
| struct netdev_boot_setup { |
| char name[IFNAMSIZ]; |
| struct ifmap map; |
| }; |
| #define NETDEV_BOOT_SETUP_MAX 8 |
| |
| 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; |
| struct net_device *dev; |
| struct list_head dev_list; |
| #endif |
| }; |
| |
| enum |
| { |
| NAPI_STATE_SCHED, /* Poll is scheduled */ |
| }; |
| |
| extern void FASTCALL(__napi_schedule(struct napi_struct *n)); |
| |
| /** |
| * 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 |
| */ |
| static inline int napi_schedule_prep(struct napi_struct *n) |
| { |
| return !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. |
| */ |
| static inline void __napi_complete(struct napi_struct *n) |
| { |
| BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state)); |
| list_del(&n->poll_list); |
| smp_mb__before_clear_bit(); |
| clear_bit(NAPI_STATE_SCHED, &n->state); |
| } |
| |
| static inline void napi_complete(struct napi_struct *n) |
| { |
| local_irq_disable(); |
| __napi_complete(n); |
| local_irq_enable(); |
| } |
| |
| /** |
| * 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) |
| { |
| while (test_and_set_bit(NAPI_STATE_SCHED, &n->state)) |
| msleep_interruptible(1); |
| } |
| |
| /** |
| * 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 |
| |
| /* |
| * 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 list_head dev_list; |
| #ifdef CONFIG_NETPOLL |
| struct list_head napi_list; |
| #endif |
| |
| /* 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 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_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */ |
| #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_GSO 2048 /* Enable software GSO. */ |
| #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */ |
| /* do not use LLTX in new drivers */ |
| #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */ |
| #define NETIF_F_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */ |
| #define NETIF_F_LRO 32768 /* large receive offload */ |
| |
| /* Segmentation offload features */ |
| #define NETIF_F_GSO_SHIFT 16 |
| #define NETIF_F_GSO_MASK 0xffff0000 |
| #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) |
| |
| /* List of features with software fallbacks. */ |
| #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6) |
| |
| |
| #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM) |
| #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM) |
| #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM) |
| #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM) |
| |
| struct net_device *next_sched; |
| |
| /* Interface index. Unique device identifier */ |
| int ifindex; |
| int iflink; |
| |
| |
| struct net_device_stats* (*get_stats)(struct net_device *dev); |
| struct net_device_stats stats; |
| |
| #ifdef CONFIG_WIRELESS_EXT |
| /* 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; |
| #endif |
| const struct ethtool_ops *ethtool_ops; |
| |
| /* Hardware header description */ |
| const struct header_ops *header_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 int 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 char operstate; /* RFC2863 operstate */ |
| unsigned char link_mode; /* mapping policy to operstate */ |
| |
| 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_addr_list *uc_list; /* Secondary unicast mac addresses */ |
| int uc_count; /* Number of installed ucasts */ |
| int uc_promisc; |
| struct dev_addr_list *mc_list; /* Multicast mac addresses */ |
| int mc_count; /* Number of installed mcasts */ |
| int promiscuity; |
| int allmulti; |
| |
| |
| /* 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 */ |
| struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data, |
| assign before registering */ |
| |
| /* |
| * Cache line mostly used on receive path (including eth_type_trans()) |
| */ |
| 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 */ |
| |
| /* Partially transmitted GSO packet. */ |
| struct sk_buff *gso_skb; |
| |
| /* 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; |
| |
| struct net_device *link_watch_next; |
| |
| /* register/unregister state machine */ |
| enum { NETREG_UNINITIALIZED=0, |
| NETREG_REGISTERED, /* completed register_netdevice */ |
| 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 |
| #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_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 (*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 |
| |
| /* Network namespace this network device is inside */ |
| struct net *nd_net; |
| |
| /* bridge stuff */ |
| struct net_bridge_port *br_port; |
| /* macvlan */ |
| struct macvlan_port *macvlan_port; |
| |
| /* class/net/name entry */ |
| struct device dev; |
| /* space for optional statistics and wireless sysfs groups */ |
| struct attribute_group *sysfs_groups[3]; |
| |
| /* 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]; |
| }; |
| #define to_net_dev(d) container_of(d, struct net_device, dev) |
| |
| #define NETDEV_ALIGN 32 |
| #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1) |
| |
| /** |
| * 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; |
| } |
| |
| /* 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)) |
| |
| static inline void netif_napi_add(struct net_device *dev, |
| struct napi_struct *napi, |
| int (*poll)(struct napi_struct *, int), |
| int weight) |
| { |
| INIT_LIST_HEAD(&napi->poll_list); |
| napi->poll = poll; |
| napi->weight = weight; |
| #ifdef CONFIG_NETPOLL |
| napi->dev = dev; |
| list_add(&napi->dev_list, &dev->napi_list); |
| spin_lock_init(&napi->poll_lock); |
| napi->poll_owner = -1; |
| #endif |
| set_bit(NAPI_STATE_SCHED, &napi->state); |
| } |
| |
| 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 *); |
| struct sk_buff *(*gso_segment)(struct sk_buff *skb, |
| int features); |
| int (*gso_send_check)(struct sk_buff *skb); |
| void *af_packet_priv; |
| struct list_head list; |
| }; |
| |
| #include <linux/interrupt.h> |
| #include <linux/notifier.h> |
| |
| extern rwlock_t dev_base_lock; /* Device list lock */ |
| |
| |
| #define for_each_netdev(net, d) \ |
| list_for_each_entry(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 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->nd_net; |
| lh = dev->dev_list.next; |
| return lh == &net->dev_base_head ? NULL : net_device_entry(lh); |
| } |
| |
| static inline struct net_device *first_net_device(struct net *net) |
| { |
| return list_empty(&net->dev_base_head) ? NULL : |
| 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(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(struct net *net, unsigned short flags, |
| unsigned short mask); |
| extern struct net_device *dev_get_by_name(struct net *net, const char *name); |
| extern struct net_device *__dev_get_by_name(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 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 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, 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 int dev_restart(struct net_device *dev); |
| #ifdef CONFIG_NETPOLL_TRAP |
| extern int netpoll_trap(void); |
| #endif |
| |
| 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); |
| 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 napi_struct backlog; |
| #ifdef CONFIG_NET_DMA |
| struct dma_chan *net_dma; |
| #endif |
| }; |
| |
| DECLARE_PER_CPU(struct softnet_data,softnet_data); |
| |
| #define HAVE_NETIF_QUEUE |
| |
| extern void __netif_schedule(struct net_device *dev); |
| |
| static inline void netif_schedule(struct net_device *dev) |
| { |
| if (!test_bit(__LINK_STATE_XOFF, &dev->state)) |
| __netif_schedule(dev); |
| } |
| |
| /** |
| * 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_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) |
| { |
| #ifdef CONFIG_NETPOLL_TRAP |
| if (netpoll_trap()) { |
| clear_bit(__LINK_STATE_XOFF, &dev->state); |
| return; |
| } |
| #endif |
| if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state)) |
| __netif_schedule(dev); |
| } |
| |
| /** |
| * 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_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); |
| } |
| |
| /** |
| * 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); |
| } |
| |
| /* |
| * Routines to manage the subqueues on a device. We only need start |
| * stop, and a check if it's stopped. All other device management is |
| * 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 |
| } |
| |
| /** |
| * 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 |
| #ifdef CONFIG_NETPOLL_TRAP |
| if (netpoll_trap()) |
| return; |
| #endif |
| set_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state); |
| #endif |
| } |
| |
| /** |
| * 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 |
| } |
| |
| 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 |
| #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 |
| } |
| |
| /** |
| * netif_is_multiqueue - test if device has multiple transmit queues |
| * @dev: network device |
| * |
| * Check if device has multiple transmit queues |
| * Always falls if NETDEVICE_MULTIQUEUE is not configured |
| */ |
| static inline int netif_is_multiqueue(const struct net_device *dev) |
| { |
| #ifdef CONFIG_NETDEVICES_MULTIQUEUE |
| return (!!(NETIF_F_MULTI_QUEUE & dev->features)); |
| #else |
| return 0; |
| #endif |
| } |
| |
| /* Use this variant when it is known for sure that it |
| * is executing from interrupt context. |
| */ |
| 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. |
| */ |
| extern void dev_kfree_skb_any(struct sk_buff *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(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_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 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); |
| } |
| |
| /* 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. |
| * |
| * The name carrier is inappropriate, these functions should really be |
| * called netif_lowerlayer_*() because they represent the state of any |
| * kind of lower layer not just hardware media. |
| */ |
| |
| extern void linkwatch_fire_event(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 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); |
| } |
| |
| |
| /** |
| * 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 */); |
| } |
| |
| /** |
| * 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); |
| } |
| |
| extern void netif_device_detach(struct net_device *dev); |
| |
| extern void netif_device_attach(struct net_device *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 but only if up */ |
| static inline int netif_rx_schedule_prep(struct net_device *dev, |
| struct napi_struct *napi) |
| { |
| return netif_running(dev) && napi_schedule_prep(napi); |
| } |
| |
| /* 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, |
| struct napi_struct *napi) |
| { |
| dev_hold(dev); |
| __napi_schedule(napi); |
| } |
| |
| /* Try to reschedule poll. Called by irq handler. */ |
| |
| static inline void netif_rx_schedule(struct net_device *dev, |
| struct napi_struct *napi) |
| { |
| if (netif_rx_schedule_prep(dev, napi)) |
| __netif_rx_schedule(dev, napi); |
| } |
| |
| /* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). */ |
| static inline int netif_rx_reschedule(struct net_device *dev, |
| struct napi_struct *napi) |
| { |
| if (napi_schedule_prep(napi)) { |
| __netif_rx_schedule(dev, napi); |
| return 1; |
| } |
| 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, |
| struct napi_struct *napi) |
| { |
| __napi_complete(napi); |
| dev_put(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, |
| struct napi_struct *napi) |
| { |
| unsigned long flags; |
| |
| local_irq_save(flags); |
| __netif_rx_complete(dev, napi); |
| local_irq_restore(flags); |
| } |
| |
| /** |
| * netif_tx_lock - grab network device transmit lock |
| * @dev: network device |
| * @cpu: cpu number of lock owner |
| * |
| * Get network device transmit lock |
| */ |
| static inline void __netif_tx_lock(struct net_device *dev, int cpu) |
| { |
| spin_lock(&dev->_xmit_lock); |
| dev->xmit_lock_owner = cpu; |
| } |
| |
| static inline void netif_tx_lock(struct net_device *dev) |
| { |
| __netif_tx_lock(dev, smp_processor_id()); |
| } |
| |
| static inline void netif_tx_lock_bh(struct net_device *dev) |
| { |
| spin_lock_bh(&dev->_xmit_lock); |
| dev->xmit_lock_owner = smp_processor_id(); |
| } |
| |
| static inline int netif_tx_trylock(struct net_device *dev) |
| { |
| int ok = spin_trylock(&dev->_xmit_lock); |
| if (likely(ok)) |
| dev->xmit_lock_owner = smp_processor_id(); |
| return ok; |
| } |
| |
| static inline void netif_tx_unlock(struct net_device *dev) |
| { |
| dev->xmit_lock_owner = -1; |
| spin_unlock(&dev->_xmit_lock); |
| } |
| |
| static inline void netif_tx_unlock_bh(struct net_device *dev) |
| { |
| dev->xmit_lock_owner = -1; |
| spin_unlock_bh(&dev->_xmit_lock); |
| } |
| |
| #define HARD_TX_LOCK(dev, cpu) { \ |
| if ((dev->features & NETIF_F_LLTX) == 0) { \ |
| __netif_tx_lock(dev, cpu); \ |
| } \ |
| } |
| |
| #define HARD_TX_UNLOCK(dev) { \ |
| if ((dev->features & NETIF_F_LLTX) == 0) { \ |
| netif_tx_unlock(dev); \ |
| } \ |
| } |
| |
| static inline void netif_tx_disable(struct net_device *dev) |
| { |
| netif_tx_lock_bh(dev); |
| netif_stop_queue(dev); |
| netif_tx_unlock_bh(dev); |
| } |
| |
| /* 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_mq(int sizeof_priv, const char *name, |
| void (*setup)(struct net_device *), |
| unsigned int queue_count); |
| #define alloc_netdev(sizeof_priv, name, setup) \ |
| 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 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_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 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(struct net *net, 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); |
| extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features); |
| #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); |
| |
| extern int netdev_compute_features(unsigned long all, unsigned long one); |
| |
| static inline int net_gso_ok(int features, int gso_type) |
| { |
| int feature = gso_type << NETIF_F_GSO_SHIFT; |
| return (features & feature) == feature; |
| } |
| |
| static inline int skb_gso_ok(struct sk_buff *skb, int features) |
| { |
| return net_gso_ok(features, skb_shinfo(skb)->gso_type); |
| } |
| |
| static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb) |
| { |
| return skb_is_gso(skb) && |
| (!skb_gso_ok(skb, dev->features) || |
| unlikely(skb->ip_summed != CHECKSUM_PARTIAL)); |
| } |
| |
| /* 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. |
| */ |
| static inline int skb_bond_should_drop(struct sk_buff *skb) |
| { |
| 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->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 == __constant_htons(ETH_P_SLOW)) |
| return 0; |
| |
| return 1; |
| } |
| return 0; |
| } |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* _LINUX_DEV_H */ |