-diff --unified --recursive --new-file linux-2.6.12.5/net/Kconfig linux-2.6.12.5-1-686-smp-ring3/net/Kconfig
---- linux-2.6.12.5/net/Kconfig 2005-08-15 02:20:18.000000000 +0200
-+++ linux-2.6.12.5-1-686-smp-ring3/net/Kconfig 2005-10-22 23:50:45.535481750 +0200
-@@ -72,6 +72,7 @@
-
- Say Y unless you know what you are doing.
-
-+source "net/ring/Kconfig"
- config INET
- bool "TCP/IP networking"
- ---help---
-diff --unified --recursive --new-file linux-2.6.12.5/net/Makefile linux-2.6.12.5-1-686-smp-ring3/net/Makefile
---- linux-2.6.12.5/net/Makefile 2005-08-15 02:20:18.000000000 +0200
-+++ linux-2.6.12.5-1-686-smp-ring3/net/Makefile 2005-10-22 23:50:45.491479000 +0200
-@@ -41,6 +41,7 @@
- obj-$(CONFIG_DECNET) += decnet/
- obj-$(CONFIG_ECONET) += econet/
- obj-$(CONFIG_VLAN_8021Q) += 8021q/
-+obj-$(CONFIG_RING) += ring/
- obj-$(CONFIG_IP_SCTP) += sctp/
-
- ifeq ($(CONFIG_NET),y)
-diff --unified --recursive --new-file linux-2.6.12.5/net/Makefile.ORG linux-2.6.12.5-1-686-smp-ring3/net/Makefile.ORG
---- linux-2.6.12.5/net/Makefile.ORG 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.12.5-1-686-smp-ring3/net/Makefile.ORG 2005-10-22 23:50:45.483478500 +0200
-@@ -0,0 +1,48 @@
-+#
-+# Makefile for the linux networking.
-+#
-+# 2 Sep 2000, Christoph Hellwig <hch@infradead.org>
-+# Rewritten to use lists instead of if-statements.
-+#
-+
-+obj-y := nonet.o
-+
-+obj-$(CONFIG_NET) := socket.o core/
-+
-+tmp-$(CONFIG_COMPAT) := compat.o
-+obj-$(CONFIG_NET) += $(tmp-y)
-+
-+# LLC has to be linked before the files in net/802/
-+obj-$(CONFIG_LLC) += llc/
-+obj-$(CONFIG_NET) += ethernet/ 802/ sched/ netlink/
-+obj-$(CONFIG_INET) += ipv4/
-+obj-$(CONFIG_XFRM) += xfrm/
-+obj-$(CONFIG_UNIX) += unix/
-+ifneq ($(CONFIG_IPV6),)
-+obj-y += ipv6/
-+endif
-+obj-$(CONFIG_PACKET) += packet/
-+obj-$(CONFIG_NET_KEY) += key/
-+obj-$(CONFIG_NET_SCHED) += sched/
-+obj-$(CONFIG_BRIDGE) += bridge/
-+obj-$(CONFIG_IPX) += ipx/
-+obj-$(CONFIG_ATALK) += appletalk/
-+obj-$(CONFIG_WAN_ROUTER) += wanrouter/
-+obj-$(CONFIG_X25) += x25/
-+obj-$(CONFIG_LAPB) += lapb/
-+obj-$(CONFIG_NETROM) += netrom/
-+obj-$(CONFIG_ROSE) += rose/
-+obj-$(CONFIG_AX25) += ax25/
-+obj-$(CONFIG_IRDA) += irda/
-+obj-$(CONFIG_BT) += bluetooth/
-+obj-$(CONFIG_SUNRPC) += sunrpc/
-+obj-$(CONFIG_RXRPC) += rxrpc/
-+obj-$(CONFIG_ATM) += atm/
-+obj-$(CONFIG_DECNET) += decnet/
-+obj-$(CONFIG_ECONET) += econet/
-+obj-$(CONFIG_VLAN_8021Q) += 8021q/
-+obj-$(CONFIG_IP_SCTP) += sctp/
-+
-+ifeq ($(CONFIG_NET),y)
-+obj-$(CONFIG_SYSCTL) += sysctl_net.o
-+endif
-diff --unified --recursive --new-file linux-2.6.12.5/net/core/dev.c linux-2.6.12.5-1-686-smp-ring3/net/core/dev.c
---- linux-2.6.12.5/net/core/dev.c 2005-08-15 02:20:18.000000000 +0200
-+++ linux-2.6.12.5-1-686-smp-ring3/net/core/dev.c 2005-10-22 23:50:45.479478250 +0200
-@@ -115,6 +115,56 @@
- #endif /* CONFIG_NET_RADIO */
- #include <asm/current.h>
-
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+
-+/* #define RING_DEBUG */
-+
-+#include <linux/ring.h>
-+#include <linux/version.h>
-+
-+static handle_ring_skb ring_handler = NULL;
-+
-+handle_ring_skb get_skb_ring_handler() { return(ring_handler); }
-+
-+void set_skb_ring_handler(handle_ring_skb the_handler) {
-+ ring_handler = the_handler;
-+}
-+
-+void do_skb_ring_handler(struct sk_buff *skb,
-+ u_char recv_packet, u_char real_skb) {
-+ if(ring_handler)
-+ ring_handler(skb, recv_packet, real_skb);
-+}
-+
-+/* ******************* */
-+
-+static handle_ring_buffer buffer_ring_handler = NULL;
-+
-+handle_ring_buffer get_buffer_ring_handler() { return(buffer_ring_handler); }
-+
-+void set_buffer_ring_handler(handle_ring_buffer the_handler) {
-+ buffer_ring_handler = the_handler;
-+}
-+
-+int do_buffer_ring_handler(struct net_device *dev, char *data, int len) {
-+ if(buffer_ring_handler) {
-+ buffer_ring_handler(dev, data, len);
-+ return(1);
-+ } else
-+ return(0);
-+}
-+
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
-+EXPORT_SYMBOL(get_skb_ring_handler);
-+EXPORT_SYMBOL(set_skb_ring_handler);
-+EXPORT_SYMBOL(do_skb_ring_handler);
-+
-+EXPORT_SYMBOL(get_buffer_ring_handler);
-+EXPORT_SYMBOL(set_buffer_ring_handler);
-+EXPORT_SYMBOL(do_buffer_ring_handler);
-+#endif
-+
-+#endif
- /* This define, if set, will randomly drop a packet when congestion
- * is more than moderate. It helps fairness in the multi-interface
- * case when one of them is a hog, but it kills performance for the
-@@ -1293,6 +1343,10 @@
- skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_EGRESS);
- #endif
- if (q->enqueue) {
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+ if(ring_handler) ring_handler(skb, 0, 1);
-+#endif /* CONFIG_RING */
-+
- /* Grab device queue */
- spin_lock(&dev->queue_lock);
-
-@@ -1509,6 +1563,13 @@
-
- preempt_disable();
- err = netif_rx(skb);
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+ if(ring_handler && ring_handler(skb, 1, 1)) {
-+ /* The packet has been copied into a ring */
-+ return(NET_RX_SUCCESS);
-+ }
-+#endif /* CONFIG_RING */
-+
- if (local_softirq_pending())
- do_softirq();
- preempt_enable();
-@@ -1655,6 +1716,13 @@
- int ret = NET_RX_DROP;
- unsigned short type;
-
-+#if defined (CONFIG_RING) || defined(CONFIG_RING_MODULE)
-+ if(ring_handler && ring_handler(skb, 1, 1)) {
-+ /* The packet has been copied into a ring */
-+ return(NET_RX_SUCCESS);
-+ }
-+#endif /* CONFIG_RING */
-+
- /* if we've gotten here through NAPI, check netpoll */
- if (skb->dev->poll && netpoll_rx(skb))
- return NET_RX_DROP;
-diff --unified --recursive --new-file linux-2.6.12.5/net/core/dev.c.ORG linux-2.6.12.5-1-686-smp-ring3/net/core/dev.c.ORG
---- linux-2.6.12.5/net/core/dev.c.ORG 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.12.5-1-686-smp-ring3/net/core/dev.c.ORG 2005-10-22 23:50:45.203461000 +0200
-@@ -0,0 +1,3385 @@
-+/*
-+ * NET3 Protocol independent device support routines.
-+ *
-+ * 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.
-+ *
-+ * Derived from the non IP parts of dev.c 1.0.19
-+ * Authors: Ross Biro
-+ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
-+ * Mark Evans, <evansmp@uhura.aston.ac.uk>
-+ *
-+ * Additional Authors:
-+ * Florian la Roche <rzsfl@rz.uni-sb.de>
-+ * Alan Cox <gw4pts@gw4pts.ampr.org>
-+ * David Hinds <dahinds@users.sourceforge.net>
-+ * Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
-+ * Adam Sulmicki <adam@cfar.umd.edu>
-+ * Pekka Riikonen <priikone@poesidon.pspt.fi>
-+ *
-+ * Changes:
-+ * D.J. Barrow : Fixed bug where dev->refcnt gets set
-+ * to 2 if register_netdev gets called
-+ * before net_dev_init & also removed a
-+ * few lines of code in the process.
-+ * Alan Cox : device private ioctl copies fields back.
-+ * Alan Cox : Transmit queue code does relevant
-+ * stunts to keep the queue safe.
-+ * Alan Cox : Fixed double lock.
-+ * Alan Cox : Fixed promisc NULL pointer trap
-+ * ???????? : Support the full private ioctl range
-+ * Alan Cox : Moved ioctl permission check into
-+ * drivers
-+ * Tim Kordas : SIOCADDMULTI/SIOCDELMULTI
-+ * Alan Cox : 100 backlog just doesn't cut it when
-+ * you start doing multicast video 8)
-+ * Alan Cox : Rewrote net_bh and list manager.
-+ * Alan Cox : Fix ETH_P_ALL echoback lengths.
-+ * Alan Cox : Took out transmit every packet pass
-+ * Saved a few bytes in the ioctl handler
-+ * Alan Cox : Network driver sets packet type before
-+ * calling netif_rx. Saves a function
-+ * call a packet.
-+ * Alan Cox : Hashed net_bh()
-+ * Richard Kooijman: Timestamp fixes.
-+ * Alan Cox : Wrong field in SIOCGIFDSTADDR
-+ * Alan Cox : Device lock protection.
-+ * Alan Cox : Fixed nasty side effect of device close
-+ * changes.
-+ * Rudi Cilibrasi : Pass the right thing to
-+ * set_mac_address()
-+ * Dave Miller : 32bit quantity for the device lock to
-+ * make it work out on a Sparc.
-+ * Bjorn Ekwall : Added KERNELD hack.
-+ * Alan Cox : Cleaned up the backlog initialise.
-+ * Craig Metz : SIOCGIFCONF fix if space for under
-+ * 1 device.
-+ * Thomas Bogendoerfer : Return ENODEV for dev_open, if there
-+ * is no device open function.
-+ * Andi Kleen : Fix error reporting for SIOCGIFCONF
-+ * Michael Chastain : Fix signed/unsigned for SIOCGIFCONF
-+ * Cyrus Durgin : Cleaned for KMOD
-+ * Adam Sulmicki : Bug Fix : Network Device Unload
-+ * A network device unload needs to purge
-+ * the backlog queue.
-+ * Paul Rusty Russell : SIOCSIFNAME
-+ * Pekka Riikonen : Netdev boot-time settings code
-+ * Andrew Morton : Make unregister_netdevice wait
-+ * indefinitely on dev->refcnt
-+ * J Hadi Salim : - Backlog queue sampling
-+ * - netif_rx() feedback
-+ */
-+
-+#include <asm/uaccess.h>
-+#include <asm/system.h>
-+#include <linux/bitops.h>
-+#include <linux/config.h>
-+#include <linux/cpu.h>
-+#include <linux/types.h>
-+#include <linux/kernel.h>
-+#include <linux/sched.h>
-+#include <linux/string.h>
-+#include <linux/mm.h>
-+#include <linux/socket.h>
-+#include <linux/sockios.h>
-+#include <linux/errno.h>
-+#include <linux/interrupt.h>
-+#include <linux/if_ether.h>
-+#include <linux/netdevice.h>
-+#include <linux/etherdevice.h>
-+#include <linux/notifier.h>
-+#include <linux/skbuff.h>
-+#include <net/sock.h>
-+#include <linux/rtnetlink.h>
-+#include <linux/proc_fs.h>
-+#include <linux/seq_file.h>
-+#include <linux/stat.h>
-+#include <linux/if_bridge.h>
-+#include <linux/divert.h>
-+#include <net/dst.h>
-+#include <net/pkt_sched.h>
-+#include <net/checksum.h>
-+#include <linux/highmem.h>
-+#include <linux/init.h>
-+#include <linux/kmod.h>
-+#include <linux/module.h>
-+#include <linux/kallsyms.h>
-+#include <linux/netpoll.h>
-+#include <linux/rcupdate.h>
-+#include <linux/delay.h>
-+#ifdef CONFIG_NET_RADIO
-+#include <linux/wireless.h> /* Note : will define WIRELESS_EXT */
-+#include <net/iw_handler.h>
-+#endif /* CONFIG_NET_RADIO */
-+#include <asm/current.h>
-+
-+/* This define, if set, will randomly drop a packet when congestion
-+ * is more than moderate. It helps fairness in the multi-interface
-+ * case when one of them is a hog, but it kills performance for the
-+ * single interface case so it is off now by default.
-+ */
-+#undef RAND_LIE
-+
-+/* Setting this will sample the queue lengths and thus congestion
-+ * via a timer instead of as each packet is received.
-+ */
-+#undef OFFLINE_SAMPLE
-+
-+/*
-+ * The list of packet types we will receive (as opposed to discard)
-+ * and the routines to invoke.
-+ *
-+ * Why 16. Because with 16 the only overlap we get on a hash of the
-+ * low nibble of the protocol value is RARP/SNAP/X.25.
-+ *
-+ * NOTE: That is no longer true with the addition of VLAN tags. Not
-+ * sure which should go first, but I bet it won't make much
-+ * difference if we are running VLANs. The good news is that
-+ * this protocol won't be in the list unless compiled in, so
-+ * the average user (w/out VLANs) will not be adversly affected.
-+ * --BLG
-+ *
-+ * 0800 IP
-+ * 8100 802.1Q VLAN
-+ * 0001 802.3
-+ * 0002 AX.25
-+ * 0004 802.2
-+ * 8035 RARP
-+ * 0005 SNAP
-+ * 0805 X.25
-+ * 0806 ARP
-+ * 8137 IPX
-+ * 0009 Localtalk
-+ * 86DD IPv6
-+ */
-+
-+static DEFINE_SPINLOCK(ptype_lock);
-+static struct list_head ptype_base[16]; /* 16 way hashed list */
-+static struct list_head ptype_all; /* Taps */
-+
-+#ifdef OFFLINE_SAMPLE
-+static void sample_queue(unsigned long dummy);
-+static struct timer_list samp_timer = TIMER_INITIALIZER(sample_queue, 0, 0);
-+#endif
-+
-+/*
-+ * The @dev_base list is protected by @dev_base_lock and the rtln
-+ * semaphore.
-+ *
-+ * Pure readers hold dev_base_lock for reading.
-+ *
-+ * Writers must hold the rtnl semaphore while they loop through the
-+ * dev_base list, and hold dev_base_lock for writing when they do the
-+ * actual updates. This allows pure readers to access the list even
-+ * while a writer is preparing to update it.
-+ *
-+ * To put it another way, dev_base_lock is held for writing only to
-+ * protect against pure readers; the rtnl semaphore provides the
-+ * protection against other writers.
-+ *
-+ * See, for example usages, register_netdevice() and
-+ * unregister_netdevice(), which must be called with the rtnl
-+ * semaphore held.
-+ */
-+struct net_device *dev_base;
-+static struct net_device **dev_tail = &dev_base;
-+DEFINE_RWLOCK(dev_base_lock);
-+
-+EXPORT_SYMBOL(dev_base);
-+EXPORT_SYMBOL(dev_base_lock);
-+
-+#define NETDEV_HASHBITS 8
-+static struct hlist_head dev_name_head[1<<NETDEV_HASHBITS];
-+static struct hlist_head dev_index_head[1<<NETDEV_HASHBITS];
-+
-+static inline struct hlist_head *dev_name_hash(const char *name)
-+{
-+ unsigned hash = full_name_hash(name, strnlen(name, IFNAMSIZ));
-+ return &dev_name_head[hash & ((1<<NETDEV_HASHBITS)-1)];
-+}
-+
-+static inline struct hlist_head *dev_index_hash(int ifindex)
-+{
-+ return &dev_index_head[ifindex & ((1<<NETDEV_HASHBITS)-1)];
-+}
-+
-+/*
-+ * Our notifier list
-+ */
-+
-+static struct notifier_block *netdev_chain;
-+
-+/*
-+ * Device drivers call our routines to queue packets here. We empty the
-+ * queue in the local softnet handler.
-+ */
-+DEFINE_PER_CPU(struct softnet_data, softnet_data) = { 0, };
-+
-+#ifdef CONFIG_SYSFS
-+extern int netdev_sysfs_init(void);
-+extern int netdev_register_sysfs(struct net_device *);
-+extern void netdev_unregister_sysfs(struct net_device *);
-+#else
-+#define netdev_sysfs_init() (0)
-+#define netdev_register_sysfs(dev) (0)
-+#define netdev_unregister_sysfs(dev) do { } while(0)
-+#endif
-+
-+
-+/*******************************************************************************
-+
-+ Protocol management and registration routines
-+
-+*******************************************************************************/
-+
-+/*
-+ * For efficiency
-+ */
-+
-+int netdev_nit;
-+
-+/*
-+ * Add a protocol ID to the list. Now that the input handler is
-+ * smarter we can dispense with all the messy stuff that used to be
-+ * here.
-+ *
-+ * BEWARE!!! Protocol handlers, mangling input packets,
-+ * MUST BE last in hash buckets and checking protocol handlers
-+ * MUST start from promiscuous ptype_all chain in net_bh.
-+ * It is true now, do not change it.
-+ * Explanation follows: if protocol handler, mangling packet, will
-+ * be the first on list, it is not able to sense, that packet
-+ * is cloned and should be copied-on-write, so that it will
-+ * change it and subsequent readers will get broken packet.
-+ * --ANK (980803)
-+ */
-+
-+/**
-+ * dev_add_pack - add packet handler
-+ * @pt: packet type declaration
-+ *
-+ * Add a protocol handler to the networking stack. The passed &packet_type
-+ * is linked into kernel lists and may not be freed until it has been
-+ * removed from the kernel lists.
-+ *
-+ * This call does not sleep therefore it can not
-+ * guarantee all CPU's that are in middle of receiving packets
-+ * will see the new packet type (until the next received packet).
-+ */
-+
-+void dev_add_pack(struct packet_type *pt)
-+{
-+ int hash;
-+
-+ spin_lock_bh(&ptype_lock);
-+ if (pt->type == htons(ETH_P_ALL)) {
-+ netdev_nit++;
-+ list_add_rcu(&pt->list, &ptype_all);
-+ } else {
-+ hash = ntohs(pt->type) & 15;
-+ list_add_rcu(&pt->list, &ptype_base[hash]);
-+ }
-+ spin_unlock_bh(&ptype_lock);
-+}
-+
-+extern void linkwatch_run_queue(void);
-+
-+
-+
-+/**
-+ * __dev_remove_pack - remove packet handler
-+ * @pt: packet type declaration
-+ *
-+ * Remove a protocol handler that was previously added to the kernel
-+ * protocol handlers by dev_add_pack(). The passed &packet_type is removed
-+ * from the kernel lists and can be freed or reused once this function
-+ * returns.
-+ *
-+ * The packet type might still be in use by receivers
-+ * and must not be freed until after all the CPU's have gone
-+ * through a quiescent state.
-+ */
-+void __dev_remove_pack(struct packet_type *pt)
-+{
-+ struct list_head *head;
-+ struct packet_type *pt1;
-+
-+ spin_lock_bh(&ptype_lock);
-+
-+ if (pt->type == htons(ETH_P_ALL)) {
-+ netdev_nit--;
-+ head = &ptype_all;
-+ } else
-+ head = &ptype_base[ntohs(pt->type) & 15];
-+
-+ list_for_each_entry(pt1, head, list) {
-+ if (pt == pt1) {
-+ list_del_rcu(&pt->list);
-+ goto out;
-+ }
-+ }
-+
-+ printk(KERN_WARNING "dev_remove_pack: %p not found.\n", pt);
-+out:
-+ spin_unlock_bh(&ptype_lock);
-+}
-+/**
-+ * dev_remove_pack - remove packet handler
-+ * @pt: packet type declaration
-+ *
-+ * Remove a protocol handler that was previously added to the kernel
-+ * protocol handlers by dev_add_pack(). The passed &packet_type is removed
-+ * from the kernel lists and can be freed or reused once this function
-+ * returns.
-+ *
-+ * This call sleeps to guarantee that no CPU is looking at the packet
-+ * type after return.
-+ */
-+void dev_remove_pack(struct packet_type *pt)
-+{
-+ __dev_remove_pack(pt);
-+
-+ synchronize_net();
-+}
-+
-+/******************************************************************************
-+
-+ Device Boot-time Settings Routines
-+
-+*******************************************************************************/
-+
-+/* Boot time configuration table */
-+static struct netdev_boot_setup dev_boot_setup[NETDEV_BOOT_SETUP_MAX];
-+
-+/**
-+ * netdev_boot_setup_add - add new setup entry
-+ * @name: name of the device
-+ * @map: configured settings for the device
-+ *
-+ * Adds new setup entry to the dev_boot_setup list. The function
-+ * returns 0 on error and 1 on success. This is a generic routine to
-+ * all netdevices.
-+ */
-+static int netdev_boot_setup_add(char *name, struct ifmap *map)
-+{
-+ struct netdev_boot_setup *s;
-+ int i;
-+
-+ s = dev_boot_setup;
-+ for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
-+ if (s[i].name[0] == '\0' || s[i].name[0] == ' ') {
-+ memset(s[i].name, 0, sizeof(s[i].name));
-+ strcpy(s[i].name, name);
-+ memcpy(&s[i].map, map, sizeof(s[i].map));
-+ break;
-+ }
-+ }
-+
-+ return i >= NETDEV_BOOT_SETUP_MAX ? 0 : 1;
-+}
-+
-+/**
-+ * netdev_boot_setup_check - check boot time settings
-+ * @dev: the netdevice
-+ *
-+ * Check boot time settings for the device.
-+ * The found settings are set for the device to be used
-+ * later in the device probing.
-+ * Returns 0 if no settings found, 1 if they are.
-+ */
-+int netdev_boot_setup_check(struct net_device *dev)
-+{
-+ struct netdev_boot_setup *s = dev_boot_setup;
-+ int i;
-+
-+ for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
-+ if (s[i].name[0] != '\0' && s[i].name[0] != ' ' &&
-+ !strncmp(dev->name, s[i].name, strlen(s[i].name))) {
-+ dev->irq = s[i].map.irq;
-+ dev->base_addr = s[i].map.base_addr;
-+ dev->mem_start = s[i].map.mem_start;
-+ dev->mem_end = s[i].map.mem_end;
-+ return 1;
-+ }
-+ }
-+ return 0;
-+}
-+
-+
-+/**
-+ * netdev_boot_base - get address from boot time settings
-+ * @prefix: prefix for network device
-+ * @unit: id for network device
-+ *
-+ * Check boot time settings for the base address of device.
-+ * The found settings are set for the device to be used
-+ * later in the device probing.
-+ * Returns 0 if no settings found.
-+ */
-+unsigned long netdev_boot_base(const char *prefix, int unit)
-+{
-+ const struct netdev_boot_setup *s = dev_boot_setup;
-+ char name[IFNAMSIZ];
-+ int i;
-+
-+ sprintf(name, "%s%d", prefix, unit);
-+
-+ /*
-+ * If device already registered then return base of 1
-+ * to indicate not to probe for this interface
-+ */
-+ if (__dev_get_by_name(name))
-+ return 1;
-+
-+ for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++)
-+ if (!strcmp(name, s[i].name))
-+ return s[i].map.base_addr;
-+ return 0;
-+}
-+
-+/*
-+ * Saves at boot time configured settings for any netdevice.
-+ */
-+int __init netdev_boot_setup(char *str)
-+{
-+ int ints[5];
-+ struct ifmap map;
-+
-+ str = get_options(str, ARRAY_SIZE(ints), ints);
-+ if (!str || !*str)
-+ return 0;
-+
-+ /* Save settings */
-+ memset(&map, 0, sizeof(map));
-+ if (ints[0] > 0)
-+ map.irq = ints[1];
-+ if (ints[0] > 1)
-+ map.base_addr = ints[2];
-+ if (ints[0] > 2)
-+ map.mem_start = ints[3];
-+ if (ints[0] > 3)
-+ map.mem_end = ints[4];
-+
-+ /* Add new entry to the list */
-+ return netdev_boot_setup_add(str, &map);
-+}
-+
-+__setup("netdev=", netdev_boot_setup);
-+
-+/*******************************************************************************
-+
-+ Device Interface Subroutines
-+
-+*******************************************************************************/
-+
-+/**
-+ * __dev_get_by_name - find a device by its name
-+ * @name: name to find
-+ *
-+ * Find an interface by name. Must be called under RTNL semaphore
-+ * or @dev_base_lock. If the name is found a pointer to the device
-+ * is returned. If the name is not found then %NULL is returned. The
-+ * reference counters are not incremented so the caller must be
-+ * careful with locks.
-+ */
-+
-+struct net_device *__dev_get_by_name(const char *name)
-+{
-+ struct hlist_node *p;
-+
-+ hlist_for_each(p, dev_name_hash(name)) {
-+ struct net_device *dev
-+ = hlist_entry(p, struct net_device, name_hlist);
-+ if (!strncmp(dev->name, name, IFNAMSIZ))
-+ return dev;
-+ }
-+ return NULL;
-+}
-+
-+/**
-+ * dev_get_by_name - find a device by its name
-+ * @name: name to find
-+ *
-+ * Find an interface by name. This can be called from any
-+ * context and does its own locking. The returned handle has
-+ * the usage count incremented and the caller must use dev_put() to
-+ * release it when it is no longer needed. %NULL is returned if no
-+ * matching device is found.
-+ */
-+
-+struct net_device *dev_get_by_name(const char *name)
-+{
-+ struct net_device *dev;
-+
-+ read_lock(&dev_base_lock);
-+ dev = __dev_get_by_name(name);
-+ if (dev)
-+ dev_hold(dev);
-+ read_unlock(&dev_base_lock);
-+ return dev;
-+}
-+
-+/**
-+ * __dev_get_by_index - find a device by its ifindex
-+ * @ifindex: index of device
-+ *
-+ * Search for an interface by index. Returns %NULL if the device
-+ * is not found or a pointer to the device. The device has not
-+ * had its reference counter increased so the caller must be careful
-+ * about locking. The caller must hold either the RTNL semaphore
-+ * or @dev_base_lock.
-+ */
-+
-+struct net_device *__dev_get_by_index(int ifindex)
-+{
-+ struct hlist_node *p;
-+
-+ hlist_for_each(p, dev_index_hash(ifindex)) {
-+ struct net_device *dev
-+ = hlist_entry(p, struct net_device, index_hlist);
-+ if (dev->ifindex == ifindex)
-+ return dev;
-+ }
-+ return NULL;
-+}
-+
-+
-+/**
-+ * dev_get_by_index - find a device by its ifindex
-+ * @ifindex: index of device
-+ *
-+ * Search for an interface by index. Returns NULL if the device
-+ * is not found or a pointer to the device. The device returned has
-+ * had a reference added and the pointer is safe until the user calls
-+ * dev_put to indicate they have finished with it.
-+ */
-+
-+struct net_device *dev_get_by_index(int ifindex)
-+{
-+ struct net_device *dev;
-+
-+ read_lock(&dev_base_lock);
-+ dev = __dev_get_by_index(ifindex);
-+ if (dev)
-+ dev_hold(dev);
-+ read_unlock(&dev_base_lock);
-+ return dev;
-+}
-+
-+/**
-+ * dev_getbyhwaddr - find a device by its hardware address
-+ * @type: media type of device
-+ * @ha: hardware address
-+ *
-+ * Search for an interface by MAC address. Returns NULL if the device
-+ * is not found or a pointer to the device. The caller must hold the
-+ * rtnl semaphore. The returned device has not had its ref count increased
-+ * and the caller must therefore be careful about locking
-+ *
-+ * BUGS:
-+ * If the API was consistent this would be __dev_get_by_hwaddr
-+ */
-+
-+struct net_device *dev_getbyhwaddr(unsigned short type, char *ha)
-+{
-+ struct net_device *dev;
-+
-+ ASSERT_RTNL();
-+
-+ for (dev = dev_base; dev; dev = dev->next)
-+ if (dev->type == type &&
-+ !memcmp(dev->dev_addr, ha, dev->addr_len))
-+ break;
-+ return dev;
-+}
-+
-+struct net_device *dev_getfirstbyhwtype(unsigned short type)
-+{
-+ struct net_device *dev;
-+
-+ rtnl_lock();
-+ for (dev = dev_base; dev; dev = dev->next) {
-+ if (dev->type == type) {
-+ dev_hold(dev);
-+ break;
-+ }
-+ }
-+ rtnl_unlock();
-+ return dev;
-+}
-+
-+EXPORT_SYMBOL(dev_getfirstbyhwtype);
-+
-+/**
-+ * dev_get_by_flags - find any device with given flags
-+ * @if_flags: IFF_* values
-+ * @mask: bitmask of bits in if_flags to check
-+ *
-+ * Search for any interface with the given flags. Returns NULL if a device
-+ * is not found or a pointer to the device. The device returned has
-+ * had a reference added and the pointer is safe until the user calls
-+ * dev_put to indicate they have finished with it.
-+ */
-+
-+struct net_device * dev_get_by_flags(unsigned short if_flags, unsigned short mask)
-+{
-+ struct net_device *dev;
-+
-+ read_lock(&dev_base_lock);
-+ for (dev = dev_base; dev != NULL; dev = dev->next) {
-+ if (((dev->flags ^ if_flags) & mask) == 0) {
-+ dev_hold(dev);
-+ break;
-+ }
-+ }
-+ read_unlock(&dev_base_lock);
-+ return dev;
-+}
-+
-+/**
-+ * dev_valid_name - check if name is okay for network device
-+ * @name: name string
-+ *
-+ * Network device names need to be valid file names to
-+ * to allow sysfs to work
-+ */
-+static int dev_valid_name(const char *name)
-+{
-+ return !(*name == '\0'
-+ || !strcmp(name, ".")
-+ || !strcmp(name, "..")
-+ || strchr(name, '/'));
-+}
-+
-+/**
-+ * dev_alloc_name - allocate a name for a device
-+ * @dev: device
-+ * @name: name format string
-+ *
-+ * Passed a format string - eg "lt%d" it will try and find a suitable
-+ * id. Not efficient for many devices, not called a lot. The caller
-+ * must hold the dev_base or rtnl lock while allocating the name and
-+ * adding the device in order to avoid duplicates. Returns the number
-+ * of the unit assigned or a negative errno code.
-+ */
-+
-+int dev_alloc_name(struct net_device *dev, const char *name)
-+{
-+ int i = 0;
-+ char buf[IFNAMSIZ];
-+ const char *p;
-+ const int max_netdevices = 8*PAGE_SIZE;
-+ long *inuse;
-+ struct net_device *d;
-+
-+ p = strnchr(name, IFNAMSIZ-1, '%');
-+ if (p) {
-+ /*
-+ * Verify the string as this thing may have come from
-+ * the user. There must be either one "%d" and no other "%"
-+ * characters.
-+ */
-+ if (p[1] != 'd' || strchr(p + 2, '%'))
-+ return -EINVAL;
-+
-+ /* Use one page as a bit array of possible slots */
-+ inuse = (long *) get_zeroed_page(GFP_ATOMIC);
-+ if (!inuse)
-+ return -ENOMEM;
-+
-+ for (d = dev_base; d; d = d->next) {
-+ if (!sscanf(d->name, name, &i))
-+ continue;
-+ if (i < 0 || i >= max_netdevices)
-+ continue;
-+
-+ /* avoid cases where sscanf is not exact inverse of printf */
-+ snprintf(buf, sizeof(buf), name, i);
-+ if (!strncmp(buf, d->name, IFNAMSIZ))
-+ set_bit(i, inuse);
-+ }
-+
-+ i = find_first_zero_bit(inuse, max_netdevices);
-+ free_page((unsigned long) inuse);
-+ }
-+
-+ snprintf(buf, sizeof(buf), name, i);
-+ if (!__dev_get_by_name(buf)) {
-+ strlcpy(dev->name, buf, IFNAMSIZ);
-+ return i;
-+ }
-+
-+ /* It is possible to run out of possible slots
-+ * when the name is long and there isn't enough space left
-+ * for the digits, or if all bits are used.
-+ */
-+ return -ENFILE;
-+}
-+
-+
-+/**
-+ * dev_change_name - change name of a device
-+ * @dev: device
-+ * @newname: name (or format string) must be at least IFNAMSIZ
-+ *
-+ * Change name of a device, can pass format strings "eth%d".
-+ * for wildcarding.
-+ */
-+int dev_change_name(struct net_device *dev, char *newname)
-+{
-+ int err = 0;
-+
-+ ASSERT_RTNL();
-+
-+ if (dev->flags & IFF_UP)
-+ return -EBUSY;
-+
-+ if (!dev_valid_name(newname))
-+ return -EINVAL;
-+
-+ if (strchr(newname, '%')) {
-+ err = dev_alloc_name(dev, newname);
-+ if (err < 0)
-+ return err;
-+ strcpy(newname, dev->name);
-+ }
-+ else if (__dev_get_by_name(newname))
-+ return -EEXIST;
-+ else
-+ strlcpy(dev->name, newname, IFNAMSIZ);
-+
-+ err = class_device_rename(&dev->class_dev, dev->name);
-+ if (!err) {
-+ hlist_del(&dev->name_hlist);
-+ hlist_add_head(&dev->name_hlist, dev_name_hash(dev->name));
-+ notifier_call_chain(&netdev_chain, NETDEV_CHANGENAME, dev);
-+ }
-+
-+ return err;
-+}
-+
-+/**
-+ * netdev_features_change - device changes fatures
-+ * @dev: device to cause notification
-+ *
-+ * Called to indicate a device has changed features.
-+ */
-+void netdev_features_change(struct net_device *dev)
-+{
-+ notifier_call_chain(&netdev_chain, NETDEV_FEAT_CHANGE, dev);
-+}
-+EXPORT_SYMBOL(netdev_features_change);
-+
-+/**
-+ * netdev_state_change - device changes state
-+ * @dev: device to cause notification
-+ *
-+ * Called to indicate a device has changed state. This function calls
-+ * the notifier chains for netdev_chain and sends a NEWLINK message
-+ * to the routing socket.
-+ */
-+void netdev_state_change(struct net_device *dev)
-+{
-+ if (dev->flags & IFF_UP) {
-+ notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev);
-+ rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
-+ }
-+}
-+
-+/**
-+ * dev_load - load a network module
-+ * @name: name of interface
-+ *
-+ * If a network interface is not present and the process has suitable
-+ * privileges this function loads the module. If module loading is not
-+ * available in this kernel then it becomes a nop.
-+ */
-+
-+void dev_load(const char *name)
-+{
-+ struct net_device *dev;
-+
-+ read_lock(&dev_base_lock);
-+ dev = __dev_get_by_name(name);
-+ read_unlock(&dev_base_lock);
-+
-+ if (!dev && capable(CAP_SYS_MODULE))
-+ request_module("%s", name);
-+}
-+
-+static int default_rebuild_header(struct sk_buff *skb)
-+{
-+ printk(KERN_DEBUG "%s: default_rebuild_header called -- BUG!\n",
-+ skb->dev ? skb->dev->name : "NULL!!!");
-+ kfree_skb(skb);
-+ return 1;
-+}
-+
-+
-+/**
-+ * dev_open - prepare an interface for use.
-+ * @dev: device to open
-+ *
-+ * Takes a device from down to up state. The device's private open
-+ * function is invoked and then the multicast lists are loaded. Finally
-+ * the device is moved into the up state and a %NETDEV_UP message is
-+ * sent to the netdev notifier chain.
-+ *
-+ * Calling this function on an active interface is a nop. On a failure
-+ * a negative errno code is returned.
-+ */
-+int dev_open(struct net_device *dev)
-+{
-+ int ret = 0;
-+
-+ /*
-+ * Is it already up?
-+ */
-+
-+ if (dev->flags & IFF_UP)
-+ return 0;
-+
-+ /*
-+ * Is it even present?
-+ */
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+
-+ /*
-+ * Call device private open method
-+ */
-+ set_bit(__LINK_STATE_START, &dev->state);
-+ if (dev->open) {
-+ ret = dev->open(dev);
-+ if (ret)
-+ clear_bit(__LINK_STATE_START, &dev->state);
-+ }
-+
-+ /*
-+ * If it went open OK then:
-+ */
-+
-+ if (!ret) {
-+ /*
-+ * Set the flags.
-+ */
-+ dev->flags |= IFF_UP;
-+
-+ /*
-+ * Initialize multicasting status
-+ */
-+ dev_mc_upload(dev);
-+
-+ /*
-+ * Wakeup transmit queue engine
-+ */
-+ dev_activate(dev);
-+
-+ /*
-+ * ... and announce new interface.
-+ */
-+ notifier_call_chain(&netdev_chain, NETDEV_UP, dev);
-+ }
-+ return ret;
-+}
-+
-+/**
-+ * dev_close - shutdown an interface.
-+ * @dev: device to shutdown
-+ *
-+ * This function moves an active device into down state. A
-+ * %NETDEV_GOING_DOWN is sent to the netdev notifier chain. The device
-+ * is then deactivated and finally a %NETDEV_DOWN is sent to the notifier
-+ * chain.
-+ */
-+int dev_close(struct net_device *dev)
-+{
-+ if (!(dev->flags & IFF_UP))
-+ return 0;
-+
-+ /*
-+ * Tell people we are going down, so that they can
-+ * prepare to death, when device is still operating.
-+ */
-+ notifier_call_chain(&netdev_chain, NETDEV_GOING_DOWN, dev);
-+
-+ dev_deactivate(dev);
-+
-+ clear_bit(__LINK_STATE_START, &dev->state);
-+
-+ /* Synchronize to scheduled poll. We cannot touch poll list,
-+ * it can be even on different cpu. So just clear netif_running(),
-+ * and wait when poll really will happen. Actually, the best place
-+ * for this is inside dev->stop() after device stopped its irq
-+ * engine, but this requires more changes in devices. */
-+
-+ smp_mb__after_clear_bit(); /* Commit netif_running(). */
-+ while (test_bit(__LINK_STATE_RX_SCHED, &dev->state)) {
-+ /* No hurry. */
-+ current->state = TASK_INTERRUPTIBLE;
-+ schedule_timeout(1);
-+ }
-+
-+ /*
-+ * Call the device specific close. This cannot fail.
-+ * Only if device is UP
-+ *
-+ * We allow it to be called even after a DETACH hot-plug
-+ * event.
-+ */
-+ if (dev->stop)
-+ dev->stop(dev);
-+
-+ /*
-+ * Device is now down.
-+ */
-+
-+ dev->flags &= ~IFF_UP;
-+
-+ /*
-+ * Tell people we are down
-+ */
-+ notifier_call_chain(&netdev_chain, NETDEV_DOWN, dev);
-+
-+ return 0;
-+}
-+
-+
-+/*
-+ * Device change register/unregister. These are not inline or static
-+ * as we export them to the world.
-+ */
-+
-+/**
-+ * register_netdevice_notifier - register a network notifier block
-+ * @nb: notifier
-+ *
-+ * Register a notifier to be called when network device events occur.
-+ * The notifier passed is linked into the kernel structures and must
-+ * not be reused until it has been unregistered. A negative errno code
-+ * is returned on a failure.
-+ *
-+ * When registered all registration and up events are replayed
-+ * to the new notifier to allow device to have a race free
-+ * view of the network device list.
-+ */
-+
-+int register_netdevice_notifier(struct notifier_block *nb)
-+{
-+ struct net_device *dev;
-+ int err;
-+
-+ rtnl_lock();
-+ err = notifier_chain_register(&netdev_chain, nb);
-+ if (!err) {
-+ for (dev = dev_base; dev; dev = dev->next) {
-+ nb->notifier_call(nb, NETDEV_REGISTER, dev);
-+
-+ if (dev->flags & IFF_UP)
-+ nb->notifier_call(nb, NETDEV_UP, dev);
-+ }
-+ }
-+ rtnl_unlock();
-+ return err;
-+}
-+
-+/**
-+ * unregister_netdevice_notifier - unregister a network notifier block
-+ * @nb: notifier
-+ *
-+ * Unregister a notifier previously registered by
-+ * register_netdevice_notifier(). The notifier is unlinked into the
-+ * kernel structures and may then be reused. A negative errno code
-+ * is returned on a failure.
-+ */
-+
-+int unregister_netdevice_notifier(struct notifier_block *nb)
-+{
-+ return notifier_chain_unregister(&netdev_chain, nb);
-+}
-+
-+/**
-+ * call_netdevice_notifiers - call all network notifier blocks
-+ * @val: value passed unmodified to notifier function
-+ * @v: pointer passed unmodified to notifier function
-+ *
-+ * Call all network notifier blocks. Parameters and return value
-+ * are as for notifier_call_chain().
-+ */
-+
-+int call_netdevice_notifiers(unsigned long val, void *v)
-+{
-+ return notifier_call_chain(&netdev_chain, val, v);
-+}
-+
-+/* When > 0 there are consumers of rx skb time stamps */
-+static atomic_t netstamp_needed = ATOMIC_INIT(0);
-+
-+void net_enable_timestamp(void)
-+{
-+ atomic_inc(&netstamp_needed);
-+}
-+
-+void net_disable_timestamp(void)
-+{
-+ atomic_dec(&netstamp_needed);
-+}
-+
-+static inline void net_timestamp(struct timeval *stamp)
-+{
-+ if (atomic_read(&netstamp_needed))
-+ do_gettimeofday(stamp);
-+ else {
-+ stamp->tv_sec = 0;
-+ stamp->tv_usec = 0;
-+ }
-+}
-+
-+/*
-+ * Support routine. Sends outgoing frames to any network
-+ * taps currently in use.
-+ */
-+
-+void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
-+{
-+ struct packet_type *ptype;
-+ net_timestamp(&skb->stamp);
-+
-+ rcu_read_lock();
-+ list_for_each_entry_rcu(ptype, &ptype_all, list) {
-+ /* Never send packets back to the socket
-+ * they originated from - MvS (miquels@drinkel.ow.org)
-+ */
-+ if ((ptype->dev == dev || !ptype->dev) &&
-+ (ptype->af_packet_priv == NULL ||
-+ (struct sock *)ptype->af_packet_priv != skb->sk)) {
-+ struct sk_buff *skb2= skb_clone(skb, GFP_ATOMIC);
-+ if (!skb2)
-+ break;
-+
-+ /* skb->nh should be correctly
-+ set by sender, so that the second statement is
-+ just protection against buggy protocols.
-+ */
-+ skb2->mac.raw = skb2->data;
-+
-+ if (skb2->nh.raw < skb2->data ||
-+ skb2->nh.raw > skb2->tail) {
-+ if (net_ratelimit())
-+ printk(KERN_CRIT "protocol %04x is "
-+ "buggy, dev %s\n",
-+ skb2->protocol, dev->name);
-+ skb2->nh.raw = skb2->data;
-+ }
-+
-+ skb2->h.raw = skb2->nh.raw;
-+ skb2->pkt_type = PACKET_OUTGOING;
-+ ptype->func(skb2, skb->dev, ptype);
-+ }
-+ }
-+ rcu_read_unlock();
-+}
-+
-+/*
-+ * Invalidate hardware checksum when packet is to be mangled, and
-+ * complete checksum manually on outgoing path.
-+ */
-+int skb_checksum_help(struct sk_buff *skb, int inward)
-+{
-+ unsigned int csum;
-+ int ret = 0, offset = skb->h.raw - skb->data;
-+
-+ if (inward) {
-+ skb->ip_summed = CHECKSUM_NONE;
-+ goto out;
-+ }
-+
-+ if (skb_cloned(skb)) {
-+ ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
-+ if (ret)
-+ goto out;
-+ }
-+
-+ if (offset > (int)skb->len)
-+ BUG();
-+ csum = skb_checksum(skb, offset, skb->len-offset, 0);
-+
-+ offset = skb->tail - skb->h.raw;
-+ if (offset <= 0)
-+ BUG();
-+ if (skb->csum + 2 > offset)
-+ BUG();
-+
-+ *(u16*)(skb->h.raw + skb->csum) = csum_fold(csum);
-+ skb->ip_summed = CHECKSUM_NONE;
-+out:
-+ return ret;
-+}
-+
-+#ifdef CONFIG_HIGHMEM
-+/* Actually, we should eliminate this check as soon as we know, that:
-+ * 1. IOMMU is present and allows to map all the memory.
-+ * 2. No high memory really exists on this machine.
-+ */
-+
-+static inline int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
-+{
-+ int i;
-+
-+ if (dev->features & NETIF_F_HIGHDMA)
-+ return 0;
-+
-+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
-+ if (PageHighMem(skb_shinfo(skb)->frags[i].page))
-+ return 1;
-+
-+ return 0;
-+}
-+#else
-+#define illegal_highdma(dev, skb) (0)
-+#endif
-+
-+extern void skb_release_data(struct sk_buff *);
-+
-+/* Keep head the same: replace data */
-+int __skb_linearize(struct sk_buff *skb, int gfp_mask)
-+{
-+ unsigned int size;
-+ u8 *data;
-+ long offset;
-+ struct skb_shared_info *ninfo;
-+ int headerlen = skb->data - skb->head;
-+ int expand = (skb->tail + skb->data_len) - skb->end;
-+
-+ if (skb_shared(skb))
-+ BUG();
-+
-+ if (expand <= 0)
-+ expand = 0;
-+
-+ size = skb->end - skb->head + expand;
-+ size = SKB_DATA_ALIGN(size);
-+ data = kmalloc(size + sizeof(struct skb_shared_info), gfp_mask);
-+ if (!data)
-+ return -ENOMEM;
-+
-+ /* Copy entire thing */
-+ if (skb_copy_bits(skb, -headerlen, data, headerlen + skb->len))
-+ BUG();
-+
-+ /* Set up shinfo */
-+ ninfo = (struct skb_shared_info*)(data + size);
-+ atomic_set(&ninfo->dataref, 1);
-+ ninfo->tso_size = skb_shinfo(skb)->tso_size;
-+ ninfo->tso_segs = skb_shinfo(skb)->tso_segs;
-+ ninfo->nr_frags = 0;
-+ ninfo->frag_list = NULL;
-+
-+ /* Offset between the two in bytes */
-+ offset = data - skb->head;
-+
-+ /* Free old data. */
-+ skb_release_data(skb);
-+
-+ skb->head = data;
-+ skb->end = data + size;
-+
-+ /* Set up new pointers */
-+ skb->h.raw += offset;
-+ skb->nh.raw += offset;
-+ skb->mac.raw += offset;
-+ skb->tail += offset;
-+ skb->data += offset;
-+
-+ /* We are no longer a clone, even if we were. */
-+ skb->cloned = 0;
-+
-+ skb->tail += skb->data_len;
-+ skb->data_len = 0;
-+ return 0;
-+}
-+
-+#define HARD_TX_LOCK(dev, cpu) { \
-+ if ((dev->features & NETIF_F_LLTX) == 0) { \
-+ spin_lock(&dev->xmit_lock); \
-+ dev->xmit_lock_owner = cpu; \
-+ } \
-+}
-+
-+#define HARD_TX_UNLOCK(dev) { \
-+ if ((dev->features & NETIF_F_LLTX) == 0) { \
-+ dev->xmit_lock_owner = -1; \
-+ spin_unlock(&dev->xmit_lock); \
-+ } \
-+}
-+
-+/**
-+ * dev_queue_xmit - transmit a buffer
-+ * @skb: buffer to transmit
-+ *
-+ * Queue a buffer for transmission to a network device. The caller must
-+ * have set the device and priority and built the buffer before calling
-+ * this function. The function can be called from an interrupt.
-+ *
-+ * A negative errno code is returned on a failure. A success does not
-+ * guarantee the frame will be transmitted as it may be dropped due
-+ * to congestion or traffic shaping.
-+ *
-+ * -----------------------------------------------------------------------------------
-+ * I notice this method can also return errors from the queue disciplines,
-+ * including NET_XMIT_DROP, which is a positive value. So, errors can also
-+ * be positive.
-+ *
-+ * Regardless of the return value, the skb is consumed, so it is currently
-+ * difficult to retry a send to this method. (You can bump the ref count
-+ * before sending to hold a reference for retry if you are careful.)
-+ *
-+ * When calling this method, interrupts MUST be enabled. This is because
-+ * the BH enable code must have IRQs enabled so that it will not deadlock.
-+ * --BLG
-+ */
-+
-+int dev_queue_xmit(struct sk_buff *skb)
-+{
-+ struct net_device *dev = skb->dev;
-+ struct Qdisc *q;
-+ int rc = -ENOMEM;
-+
-+ if (skb_shinfo(skb)->frag_list &&
-+ !(dev->features & NETIF_F_FRAGLIST) &&
-+ __skb_linearize(skb, GFP_ATOMIC))
-+ goto out_kfree_skb;
-+
-+ /* Fragmented skb is linearized if device does not support SG,
-+ * or if at least one of fragments is in highmem and device
-+ * does not support DMA from it.
-+ */
-+ if (skb_shinfo(skb)->nr_frags &&
-+ (!(dev->features & NETIF_F_SG) || illegal_highdma(dev, skb)) &&
-+ __skb_linearize(skb, GFP_ATOMIC))
-+ goto out_kfree_skb;
-+
-+ /* If packet is not checksummed and device does not support
-+ * checksumming for this protocol, complete checksumming here.
-+ */
-+ if (skb->ip_summed == CHECKSUM_HW &&
-+ (!(dev->features & (NETIF_F_HW_CSUM | NETIF_F_NO_CSUM)) &&
-+ (!(dev->features & NETIF_F_IP_CSUM) ||
-+ skb->protocol != htons(ETH_P_IP))))
-+ if (skb_checksum_help(skb, 0))
-+ goto out_kfree_skb;
-+
-+ /* Disable soft irqs for various locks below. Also
-+ * stops preemption for RCU.
-+ */
-+ local_bh_disable();
-+
-+ /* Updates of qdisc are serialized by queue_lock.
-+ * The struct Qdisc which is pointed to by qdisc is now a
-+ * rcu structure - it may be accessed without acquiring
-+ * a lock (but the structure may be stale.) The freeing of the
-+ * qdisc will be deferred until it's known that there are no
-+ * more references to it.
-+ *
-+ * If the qdisc has an enqueue function, we still need to
-+ * hold the queue_lock before calling it, since queue_lock
-+ * also serializes access to the device queue.
-+ */
-+
-+ q = rcu_dereference(dev->qdisc);
-+#ifdef CONFIG_NET_CLS_ACT
-+ skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_EGRESS);
-+#endif
-+ if (q->enqueue) {
-+ /* Grab device queue */
-+ spin_lock(&dev->queue_lock);
-+
-+ rc = q->enqueue(skb, q);
-+
-+ qdisc_run(dev);
-+
-+ spin_unlock(&dev->queue_lock);
-+ rc = rc == NET_XMIT_BYPASS ? NET_XMIT_SUCCESS : rc;
-+ goto out;
-+ }
-+
-+ /* The device has no queue. Common case for software devices:
-+ loopback, all the sorts of tunnels...
-+
-+ Really, it is unlikely that xmit_lock protection is necessary here.
-+ (f.e. loopback and IP tunnels are clean ignoring statistics
-+ counters.)
-+ However, it is possible, that they rely on protection
-+ made by us here.
-+
-+ Check this and shot the lock. It is not prone from deadlocks.
-+ Either shot noqueue qdisc, it is even simpler 8)
-+ */
-+ if (dev->flags & IFF_UP) {
-+ int cpu = smp_processor_id(); /* ok because BHs are off */
-+
-+ if (dev->xmit_lock_owner != cpu) {
-+
-+ HARD_TX_LOCK(dev, cpu);
-+
-+ if (!netif_queue_stopped(dev)) {
-+ if (netdev_nit)
-+ dev_queue_xmit_nit(skb, dev);
-+
-+ rc = 0;
-+ if (!dev->hard_start_xmit(skb, dev)) {
-+ HARD_TX_UNLOCK(dev);
-+ goto out;
-+ }
-+ }
-+ HARD_TX_UNLOCK(dev);
-+ if (net_ratelimit())
-+ printk(KERN_CRIT "Virtual device %s asks to "
-+ "queue packet!\n", dev->name);
-+ } else {
-+ /* Recursion is detected! It is possible,
-+ * unfortunately */
-+ if (net_ratelimit())
-+ printk(KERN_CRIT "Dead loop on virtual device "
-+ "%s, fix it urgently!\n", dev->name);
-+ }
-+ }
-+
-+ rc = -ENETDOWN;
-+ local_bh_enable();
-+
-+out_kfree_skb:
-+ kfree_skb(skb);
-+ return rc;
-+out:
-+ local_bh_enable();
-+ return rc;
-+}
-+
-+
-+/*=======================================================================
-+ Receiver routines
-+ =======================================================================*/
-+
-+int netdev_max_backlog = 300;
-+int weight_p = 64; /* old backlog weight */
-+/* These numbers are selected based on intuition and some
-+ * experimentatiom, if you have more scientific way of doing this
-+ * please go ahead and fix things.
-+ */
-+int no_cong_thresh = 10;
-+int no_cong = 20;
-+int lo_cong = 100;
-+int mod_cong = 290;
-+
-+DEFINE_PER_CPU(struct netif_rx_stats, netdev_rx_stat) = { 0, };
-+
-+
-+static void get_sample_stats(int cpu)
-+{
-+#ifdef RAND_LIE
-+ unsigned long rd;
-+ int rq;
-+#endif
-+ struct softnet_data *sd = &per_cpu(softnet_data, cpu);
-+ int blog = sd->input_pkt_queue.qlen;
-+ int avg_blog = sd->avg_blog;
-+
-+ avg_blog = (avg_blog >> 1) + (blog >> 1);
-+
-+ if (avg_blog > mod_cong) {
-+ /* Above moderate congestion levels. */
-+ sd->cng_level = NET_RX_CN_HIGH;
-+#ifdef RAND_LIE
-+ rd = net_random();
-+ rq = rd % netdev_max_backlog;
-+ if (rq < avg_blog) /* unlucky bastard */
-+ sd->cng_level = NET_RX_DROP;
-+#endif
-+ } else if (avg_blog > lo_cong) {
-+ sd->cng_level = NET_RX_CN_MOD;
-+#ifdef RAND_LIE
-+ rd = net_random();
-+ rq = rd % netdev_max_backlog;
-+ if (rq < avg_blog) /* unlucky bastard */
-+ sd->cng_level = NET_RX_CN_HIGH;
-+#endif
-+ } else if (avg_blog > no_cong)
-+ sd->cng_level = NET_RX_CN_LOW;
-+ else /* no congestion */
-+ sd->cng_level = NET_RX_SUCCESS;
-+
-+ sd->avg_blog = avg_blog;
-+}
-+
-+#ifdef OFFLINE_SAMPLE
-+static void sample_queue(unsigned long dummy)
-+{
-+/* 10 ms 0r 1ms -- i don't care -- JHS */
-+ int next_tick = 1;
-+ int cpu = smp_processor_id();
-+
-+ get_sample_stats(cpu);
-+ next_tick += jiffies;
-+ mod_timer(&samp_timer, next_tick);
-+}
-+#endif
-+
-+
-+/**
-+ * netif_rx - post buffer to the network code
-+ * @skb: buffer to post
-+ *
-+ * This function receives a packet from a device driver and queues it for
-+ * the upper (protocol) levels to process. It always succeeds. The buffer
-+ * may be dropped during processing for congestion control or by the
-+ * protocol layers.
-+ *
-+ * return values:
-+ * NET_RX_SUCCESS (no congestion)
-+ * NET_RX_CN_LOW (low congestion)
-+ * NET_RX_CN_MOD (moderate congestion)
-+ * NET_RX_CN_HIGH (high congestion)
-+ * NET_RX_DROP (packet was dropped)
-+ *
-+ */
-+
-+int netif_rx(struct sk_buff *skb)
-+{
-+ int this_cpu;
-+ struct softnet_data *queue;
-+ unsigned long flags;
-+
-+ /* if netpoll wants it, pretend we never saw it */
-+ if (netpoll_rx(skb))
-+ return NET_RX_DROP;
-+
-+ if (!skb->stamp.tv_sec)
-+ net_timestamp(&skb->stamp);
-+
-+ /*
-+ * The code is rearranged so that the path is the most
-+ * short when CPU is congested, but is still operating.
-+ */
-+ local_irq_save(flags);
-+ this_cpu = smp_processor_id();
-+ queue = &__get_cpu_var(softnet_data);
-+
-+ __get_cpu_var(netdev_rx_stat).total++;
-+ if (queue->input_pkt_queue.qlen <= netdev_max_backlog) {
-+ if (queue->input_pkt_queue.qlen) {
-+ if (queue->throttle)
-+ goto drop;
-+
-+enqueue:
-+ dev_hold(skb->dev);
-+ __skb_queue_tail(&queue->input_pkt_queue, skb);
-+#ifndef OFFLINE_SAMPLE
-+ get_sample_stats(this_cpu);
-+#endif
-+ local_irq_restore(flags);
-+ return queue->cng_level;
-+ }
-+
-+ if (queue->throttle)
-+ queue->throttle = 0;
-+
-+ netif_rx_schedule(&queue->backlog_dev);
-+ goto enqueue;
-+ }
-+
-+ if (!queue->throttle) {
-+ queue->throttle = 1;
-+ __get_cpu_var(netdev_rx_stat).throttled++;
-+ }
-+
-+drop:
-+ __get_cpu_var(netdev_rx_stat).dropped++;
-+ local_irq_restore(flags);
-+
-+ kfree_skb(skb);
-+ return NET_RX_DROP;
-+}
-+
-+int netif_rx_ni(struct sk_buff *skb)
-+{
-+ int err;
-+
-+ preempt_disable();
-+ err = netif_rx(skb);
-+ if (local_softirq_pending())
-+ do_softirq();
-+ preempt_enable();
-+
-+ return err;
-+}
-+
-+EXPORT_SYMBOL(netif_rx_ni);
-+
-+static __inline__ void skb_bond(struct sk_buff *skb)
-+{
-+ struct net_device *dev = skb->dev;
-+
-+ if (dev->master) {
-+ skb->real_dev = skb->dev;
-+ skb->dev = dev->master;
-+ }
-+}
-+
-+static void net_tx_action(struct softirq_action *h)
-+{
-+ struct softnet_data *sd = &__get_cpu_var(softnet_data);
-+
-+ if (sd->completion_queue) {
-+ struct sk_buff *clist;
-+
-+ local_irq_disable();
-+ clist = sd->completion_queue;
-+ sd->completion_queue = NULL;
-+ local_irq_enable();
-+
-+ while (clist) {
-+ struct sk_buff *skb = clist;
-+ clist = clist->next;
-+
-+ BUG_TRAP(!atomic_read(&skb->users));
-+ __kfree_skb(skb);
-+ }
-+ }
-+
-+ if (sd->output_queue) {
-+ struct net_device *head;
-+
-+ local_irq_disable();
-+ head = sd->output_queue;
-+ sd->output_queue = NULL;
-+ local_irq_enable();
-+
-+ while (head) {
-+ struct net_device *dev = head;
-+ head = head->next_sched;
-+
-+ smp_mb__before_clear_bit();
-+ clear_bit(__LINK_STATE_SCHED, &dev->state);
-+
-+ if (spin_trylock(&dev->queue_lock)) {
-+ qdisc_run(dev);
-+ spin_unlock(&dev->queue_lock);
-+ } else {
-+ netif_schedule(dev);
-+ }
-+ }
-+ }
-+}
-+
-+static __inline__ int deliver_skb(struct sk_buff *skb,
-+ struct packet_type *pt_prev)
-+{
-+ atomic_inc(&skb->users);
-+ return pt_prev->func(skb, skb->dev, pt_prev);
-+}
-+
-+#if defined(CONFIG_BRIDGE) || defined (CONFIG_BRIDGE_MODULE)
-+int (*br_handle_frame_hook)(struct net_bridge_port *p, struct sk_buff **pskb);
-+struct net_bridge;
-+struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
-+ unsigned char *addr);
-+void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
-+
-+static __inline__ int handle_bridge(struct sk_buff **pskb,
-+ struct packet_type **pt_prev, int *ret)
-+{
-+ struct net_bridge_port *port;
-+
-+ if ((*pskb)->pkt_type == PACKET_LOOPBACK ||
-+ (port = rcu_dereference((*pskb)->dev->br_port)) == NULL)
-+ return 0;
-+
-+ if (*pt_prev) {
-+ *ret = deliver_skb(*pskb, *pt_prev);
-+ *pt_prev = NULL;
-+ }
-+
-+ return br_handle_frame_hook(port, pskb);
-+}
-+#else
-+#define handle_bridge(skb, pt_prev, ret) (0)
-+#endif
-+
-+#ifdef CONFIG_NET_CLS_ACT
-+/* TODO: Maybe we should just force sch_ingress to be compiled in
-+ * when CONFIG_NET_CLS_ACT is? otherwise some useless instructions
-+ * a compare and 2 stores extra right now if we dont have it on
-+ * but have CONFIG_NET_CLS_ACT
-+ * NOTE: This doesnt stop any functionality; if you dont have
-+ * the ingress scheduler, you just cant add policies on ingress.
-+ *
-+ */
-+static int ing_filter(struct sk_buff *skb)
-+{
-+ struct Qdisc *q;
-+ struct net_device *dev = skb->dev;
-+ int result = TC_ACT_OK;
-+
-+ if (dev->qdisc_ingress) {
-+ __u32 ttl = (__u32) G_TC_RTTL(skb->tc_verd);
-+ if (MAX_RED_LOOP < ttl++) {
-+ printk("Redir loop detected Dropping packet (%s->%s)\n",
-+ skb->input_dev?skb->input_dev->name:"??",skb->dev->name);
-+ return TC_ACT_SHOT;
-+ }
-+
-+ skb->tc_verd = SET_TC_RTTL(skb->tc_verd,ttl);
-+
-+ skb->tc_verd = SET_TC_AT(skb->tc_verd,AT_INGRESS);
-+ if (NULL == skb->input_dev) {
-+ skb->input_dev = skb->dev;
-+ printk("ing_filter: fixed %s out %s\n",skb->input_dev->name,skb->dev->name);
-+ }
-+ spin_lock(&dev->ingress_lock);
-+ if ((q = dev->qdisc_ingress) != NULL)
-+ result = q->enqueue(skb, q);
-+ spin_unlock(&dev->ingress_lock);
-+
-+ }
-+
-+ return result;
-+}
-+#endif
-+
-+int netif_receive_skb(struct sk_buff *skb)
-+{
-+ struct packet_type *ptype, *pt_prev;
-+ int ret = NET_RX_DROP;
-+ unsigned short type;
-+
-+ /* if we've gotten here through NAPI, check netpoll */
-+ if (skb->dev->poll && netpoll_rx(skb))
-+ return NET_RX_DROP;
-+
-+ if (!skb->stamp.tv_sec)
-+ net_timestamp(&skb->stamp);
-+
-+ skb_bond(skb);
-+
-+ __get_cpu_var(netdev_rx_stat).total++;
-+
-+ skb->h.raw = skb->nh.raw = skb->data;
-+ skb->mac_len = skb->nh.raw - skb->mac.raw;
-+
-+ pt_prev = NULL;
-+
-+ rcu_read_lock();
-+
-+#ifdef CONFIG_NET_CLS_ACT
-+ if (skb->tc_verd & TC_NCLS) {
-+ skb->tc_verd = CLR_TC_NCLS(skb->tc_verd);
-+ goto ncls;
-+ }
-+#endif
-+
-+ list_for_each_entry_rcu(ptype, &ptype_all, list) {
-+ if (!ptype->dev || ptype->dev == skb->dev) {
-+ if (pt_prev)
-+ ret = deliver_skb(skb, pt_prev);
-+ pt_prev = ptype;
-+ }
-+ }
-+
-+#ifdef CONFIG_NET_CLS_ACT
-+ if (pt_prev) {
-+ ret = deliver_skb(skb, pt_prev);
-+ pt_prev = NULL; /* noone else should process this after*/
-+ } else {
-+ skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
-+ }
-+
-+ ret = ing_filter(skb);
-+
-+ if (ret == TC_ACT_SHOT || (ret == TC_ACT_STOLEN)) {
-+ kfree_skb(skb);
-+ goto out;
-+ }
-+
-+ skb->tc_verd = 0;
-+ncls:
-+#endif
-+
-+ handle_diverter(skb);
-+
-+ if (handle_bridge(&skb, &pt_prev, &ret))
-+ goto out;
-+
-+ type = skb->protocol;
-+ list_for_each_entry_rcu(ptype, &ptype_base[ntohs(type)&15], list) {
-+ if (ptype->type == type &&
-+ (!ptype->dev || ptype->dev == skb->dev)) {
-+ if (pt_prev)
-+ ret = deliver_skb(skb, pt_prev);
-+ pt_prev = ptype;
-+ }
-+ }
-+
-+ if (pt_prev) {
-+ ret = pt_prev->func(skb, skb->dev, pt_prev);
-+ } else {
-+ kfree_skb(skb);
-+ /* Jamal, now you will not able to escape explaining
-+ * me how you were going to use this. :-)
-+ */
-+ ret = NET_RX_DROP;
-+ }
-+
-+out:
-+ rcu_read_unlock();
-+ return ret;
-+}
-+
-+static int process_backlog(struct net_device *backlog_dev, int *budget)
-+{
-+ int work = 0;
-+ int quota = min(backlog_dev->quota, *budget);
-+ struct softnet_data *queue = &__get_cpu_var(softnet_data);
-+ unsigned long start_time = jiffies;
-+
-+ backlog_dev->weight = weight_p;
-+ for (;;) {
-+ struct sk_buff *skb;
-+ struct net_device *dev;
-+
-+ local_irq_disable();
-+ skb = __skb_dequeue(&queue->input_pkt_queue);
-+ if (!skb)
-+ goto job_done;
-+ local_irq_enable();
-+
-+ dev = skb->dev;
-+
-+ netif_receive_skb(skb);
-+
-+ dev_put(dev);
-+
-+ work++;
-+
-+ if (work >= quota || jiffies - start_time > 1)
-+ break;
-+
-+ }
-+
-+ backlog_dev->quota -= work;
-+ *budget -= work;
-+ return -1;
-+
-+job_done:
-+ backlog_dev->quota -= work;
-+ *budget -= work;
-+
-+ list_del(&backlog_dev->poll_list);
-+ smp_mb__before_clear_bit();
-+ netif_poll_enable(backlog_dev);
-+
-+ if (queue->throttle)
-+ queue->throttle = 0;
-+ local_irq_enable();
-+ return 0;
-+}
-+
-+static void net_rx_action(struct softirq_action *h)
-+{
-+ struct softnet_data *queue = &__get_cpu_var(softnet_data);
-+ unsigned long start_time = jiffies;
-+ int budget = netdev_max_backlog;
-+
-+
-+ local_irq_disable();
-+
-+ while (!list_empty(&queue->poll_list)) {
-+ struct net_device *dev;
-+
-+ if (budget <= 0 || jiffies - start_time > 1)
-+ goto softnet_break;
-+
-+ local_irq_enable();
-+
-+ dev = list_entry(queue->poll_list.next,
-+ struct net_device, poll_list);
-+ netpoll_poll_lock(dev);
-+
-+ if (dev->quota <= 0 || dev->poll(dev, &budget)) {
-+ netpoll_poll_unlock(dev);
-+ local_irq_disable();
-+ list_del(&dev->poll_list);
-+ list_add_tail(&dev->poll_list, &queue->poll_list);
-+ if (dev->quota < 0)
-+ dev->quota += dev->weight;
-+ else
-+ dev->quota = dev->weight;
-+ } else {
-+ netpoll_poll_unlock(dev);
-+ dev_put(dev);
-+ local_irq_disable();
-+ }
-+ }
-+out:
-+ local_irq_enable();
-+ return;
-+
-+softnet_break:
-+ __get_cpu_var(netdev_rx_stat).time_squeeze++;
-+ __raise_softirq_irqoff(NET_RX_SOFTIRQ);
-+ goto out;
-+}
-+
-+static gifconf_func_t * gifconf_list [NPROTO];
-+
-+/**
-+ * register_gifconf - register a SIOCGIF handler
-+ * @family: Address family
-+ * @gifconf: Function handler
-+ *
-+ * Register protocol dependent address dumping routines. The handler
-+ * that is passed must not be freed or reused until it has been replaced
-+ * by another handler.
-+ */
-+int register_gifconf(unsigned int family, gifconf_func_t * gifconf)
-+{
-+ if (family >= NPROTO)
-+ return -EINVAL;
-+ gifconf_list[family] = gifconf;
-+ return 0;
-+}
-+
-+
-+/*
-+ * Map an interface index to its name (SIOCGIFNAME)
-+ */
-+
-+/*
-+ * We need this ioctl for efficient implementation of the
-+ * if_indextoname() function required by the IPv6 API. Without
-+ * it, we would have to search all the interfaces to find a
-+ * match. --pb
-+ */
-+
-+static int dev_ifname(struct ifreq __user *arg)
-+{
-+ struct net_device *dev;
-+ struct ifreq ifr;
-+
-+ /*
-+ * Fetch the caller's info block.
-+ */
-+
-+ if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
-+ return -EFAULT;
-+
-+ read_lock(&dev_base_lock);
-+ dev = __dev_get_by_index(ifr.ifr_ifindex);
-+ if (!dev) {
-+ read_unlock(&dev_base_lock);
-+ return -ENODEV;
-+ }
-+
-+ strcpy(ifr.ifr_name, dev->name);
-+ read_unlock(&dev_base_lock);
-+
-+ if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
-+ return -EFAULT;
-+ return 0;
-+}
-+
-+/*
-+ * Perform a SIOCGIFCONF call. This structure will change
-+ * size eventually, and there is nothing I can do about it.
-+ * Thus we will need a 'compatibility mode'.
-+ */
-+
-+static int dev_ifconf(char __user *arg)
-+{
-+ struct ifconf ifc;
-+ struct net_device *dev;
-+ char __user *pos;
-+ int len;
-+ int total;
-+ int i;
-+
-+ /*
-+ * Fetch the caller's info block.
-+ */
-+
-+ if (copy_from_user(&ifc, arg, sizeof(struct ifconf)))
-+ return -EFAULT;
-+
-+ pos = ifc.ifc_buf;
-+ len = ifc.ifc_len;
-+
-+ /*
-+ * Loop over the interfaces, and write an info block for each.
-+ */
-+
-+ total = 0;
-+ for (dev = dev_base; dev; dev = dev->next) {
-+ for (i = 0; i < NPROTO; i++) {
-+ if (gifconf_list[i]) {
-+ int done;
-+ if (!pos)
-+ done = gifconf_list[i](dev, NULL, 0);
-+ else
-+ done = gifconf_list[i](dev, pos + total,
-+ len - total);
-+ if (done < 0)
-+ return -EFAULT;
-+ total += done;
-+ }
-+ }
-+ }
-+
-+ /*
-+ * All done. Write the updated control block back to the caller.
-+ */
-+ ifc.ifc_len = total;
-+
-+ /*
-+ * Both BSD and Solaris return 0 here, so we do too.
-+ */
-+ return copy_to_user(arg, &ifc, sizeof(struct ifconf)) ? -EFAULT : 0;
-+}
-+
-+#ifdef CONFIG_PROC_FS
-+/*
-+ * This is invoked by the /proc filesystem handler to display a device
-+ * in detail.
-+ */
-+static __inline__ struct net_device *dev_get_idx(loff_t pos)
-+{
-+ struct net_device *dev;
-+ loff_t i;
-+
-+ for (i = 0, dev = dev_base; dev && i < pos; ++i, dev = dev->next);
-+
-+ return i == pos ? dev : NULL;
-+}
-+
-+void *dev_seq_start(struct seq_file *seq, loff_t *pos)
-+{
-+ read_lock(&dev_base_lock);
-+ return *pos ? dev_get_idx(*pos - 1) : SEQ_START_TOKEN;
-+}
-+
-+void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
-+{
-+ ++*pos;
-+ return v == SEQ_START_TOKEN ? dev_base : ((struct net_device *)v)->next;
-+}
-+
-+void dev_seq_stop(struct seq_file *seq, void *v)
-+{
-+ read_unlock(&dev_base_lock);
-+}
-+
-+static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
-+{
-+ if (dev->get_stats) {
-+ struct net_device_stats *stats = dev->get_stats(dev);
-+
-+ seq_printf(seq, "%6s:%8lu %7lu %4lu %4lu %4lu %5lu %10lu %9lu "
-+ "%8lu %7lu %4lu %4lu %4lu %5lu %7lu %10lu\n",
-+ dev->name, stats->rx_bytes, stats->rx_packets,
-+ stats->rx_errors,
-+ stats->rx_dropped + stats->rx_missed_errors,
-+ stats->rx_fifo_errors,
-+ stats->rx_length_errors + stats->rx_over_errors +
-+ stats->rx_crc_errors + stats->rx_frame_errors,
-+ stats->rx_compressed, stats->multicast,
-+ stats->tx_bytes, stats->tx_packets,
-+ stats->tx_errors, stats->tx_dropped,
-+ stats->tx_fifo_errors, stats->collisions,
-+ stats->tx_carrier_errors +
-+ stats->tx_aborted_errors +
-+ stats->tx_window_errors +
-+ stats->tx_heartbeat_errors,
-+ stats->tx_compressed);
-+ } else
-+ seq_printf(seq, "%6s: No statistics available.\n", dev->name);
-+}
-+
-+/*
-+ * Called from the PROCfs module. This now uses the new arbitrary sized
-+ * /proc/net interface to create /proc/net/dev
-+ */
-+static int dev_seq_show(struct seq_file *seq, void *v)
-+{
-+ if (v == SEQ_START_TOKEN)
-+ seq_puts(seq, "Inter-| Receive "
-+ " | Transmit\n"
-+ " face |bytes packets errs drop fifo frame "
-+ "compressed multicast|bytes packets errs "
-+ "drop fifo colls carrier compressed\n");
-+ else
-+ dev_seq_printf_stats(seq, v);
-+ return 0;
-+}
-+
-+static struct netif_rx_stats *softnet_get_online(loff_t *pos)
-+{
-+ struct netif_rx_stats *rc = NULL;
-+
-+ while (*pos < NR_CPUS)
-+ if (cpu_online(*pos)) {
-+ rc = &per_cpu(netdev_rx_stat, *pos);
-+ break;
-+ } else
-+ ++*pos;
-+ return rc;
-+}
-+
-+static void *softnet_seq_start(struct seq_file *seq, loff_t *pos)
-+{
-+ return softnet_get_online(pos);
-+}
-+
-+static void *softnet_seq_next(struct seq_file *seq, void *v, loff_t *pos)
-+{
-+ ++*pos;
-+ return softnet_get_online(pos);
-+}
-+
-+static void softnet_seq_stop(struct seq_file *seq, void *v)
-+{
-+}
-+
-+static int softnet_seq_show(struct seq_file *seq, void *v)
-+{
-+ struct netif_rx_stats *s = v;
-+
-+ seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
-+ s->total, s->dropped, s->time_squeeze, s->throttled,
-+ s->fastroute_hit, s->fastroute_success, s->fastroute_defer,
-+ s->fastroute_deferred_out,
-+#if 0
-+ s->fastroute_latency_reduction
-+#else
-+ s->cpu_collision
-+#endif
-+ );
-+ return 0;
-+}
-+
-+static struct seq_operations dev_seq_ops = {
-+ .start = dev_seq_start,
-+ .next = dev_seq_next,
-+ .stop = dev_seq_stop,
-+ .show = dev_seq_show,
-+};
-+
-+static int dev_seq_open(struct inode *inode, struct file *file)
-+{
-+ return seq_open(file, &dev_seq_ops);
-+}
-+
-+static struct file_operations dev_seq_fops = {
-+ .owner = THIS_MODULE,
-+ .open = dev_seq_open,
-+ .read = seq_read,
-+ .llseek = seq_lseek,
-+ .release = seq_release,
-+};
-+
-+static struct seq_operations softnet_seq_ops = {
-+ .start = softnet_seq_start,
-+ .next = softnet_seq_next,
-+ .stop = softnet_seq_stop,
-+ .show = softnet_seq_show,
-+};
-+
-+static int softnet_seq_open(struct inode *inode, struct file *file)
-+{
-+ return seq_open(file, &softnet_seq_ops);
-+}
-+
-+static struct file_operations softnet_seq_fops = {
-+ .owner = THIS_MODULE,
-+ .open = softnet_seq_open,
-+ .read = seq_read,
-+ .llseek = seq_lseek,
-+ .release = seq_release,
-+};
-+
-+#ifdef WIRELESS_EXT
-+extern int wireless_proc_init(void);
-+#else
-+#define wireless_proc_init() 0
-+#endif
-+
-+static int __init dev_proc_init(void)
-+{
-+ int rc = -ENOMEM;
-+
-+ if (!proc_net_fops_create("dev", S_IRUGO, &dev_seq_fops))
-+ goto out;
-+ if (!proc_net_fops_create("softnet_stat", S_IRUGO, &softnet_seq_fops))
-+ goto out_dev;
-+ if (wireless_proc_init())
-+ goto out_softnet;
-+ rc = 0;
-+out:
-+ return rc;
-+out_softnet:
-+ proc_net_remove("softnet_stat");
-+out_dev:
-+ proc_net_remove("dev");
-+ goto out;
-+}
-+#else
-+#define dev_proc_init() 0
-+#endif /* CONFIG_PROC_FS */
-+
-+
-+/**
-+ * netdev_set_master - set up master/slave pair
-+ * @slave: slave device
-+ * @master: new master device
-+ *
-+ * Changes the master device of the slave. Pass %NULL to break the
-+ * bonding. The caller must hold the RTNL semaphore. On a failure
-+ * a negative errno code is returned. On success the reference counts
-+ * are adjusted, %RTM_NEWLINK is sent to the routing socket and the
-+ * function returns zero.
-+ */
-+int netdev_set_master(struct net_device *slave, struct net_device *master)
-+{
-+ struct net_device *old = slave->master;
-+
-+ ASSERT_RTNL();
-+
-+ if (master) {
-+ if (old)
-+ return -EBUSY;
-+ dev_hold(master);
-+ }
-+
-+ slave->master = master;
-+
-+ synchronize_net();
-+
-+ if (old)
-+ dev_put(old);
-+
-+ if (master)
-+ slave->flags |= IFF_SLAVE;
-+ else
-+ slave->flags &= ~IFF_SLAVE;
-+
-+ rtmsg_ifinfo(RTM_NEWLINK, slave, IFF_SLAVE);
-+ return 0;
-+}
-+
-+/**
-+ * dev_set_promiscuity - update promiscuity count on a device
-+ * @dev: device
-+ * @inc: modifier
-+ *
-+ * Add or remove promsicuity from a device. While the count in the device
-+ * remains above zero the interface remains promiscuous. Once it hits zero
-+ * the device reverts back to normal filtering operation. A negative inc
-+ * value is used to drop promiscuity on the device.
-+ */
-+void dev_set_promiscuity(struct net_device *dev, int inc)
-+{
-+ unsigned short old_flags = dev->flags;
-+
-+ dev->flags |= IFF_PROMISC;
-+ if ((dev->promiscuity += inc) == 0)
-+ dev->flags &= ~IFF_PROMISC;
-+ if (dev->flags ^ old_flags) {
-+ dev_mc_upload(dev);
-+ printk(KERN_INFO "device %s %s promiscuous mode\n",
-+ dev->name, (dev->flags & IFF_PROMISC) ? "entered" :
-+ "left");
-+ }
-+}
-+
-+/**
-+ * dev_set_allmulti - update allmulti count on a device
-+ * @dev: device
-+ * @inc: modifier
-+ *
-+ * Add or remove reception of all multicast frames to a device. While the
-+ * count in the device remains above zero the interface remains listening
-+ * to all interfaces. Once it hits zero the device reverts back to normal
-+ * filtering operation. A negative @inc value is used to drop the counter
-+ * when releasing a resource needing all multicasts.
-+ */
-+
-+void dev_set_allmulti(struct net_device *dev, int inc)
-+{
-+ unsigned short old_flags = dev->flags;
-+
-+ dev->flags |= IFF_ALLMULTI;
-+ if ((dev->allmulti += inc) == 0)
-+ dev->flags &= ~IFF_ALLMULTI;
-+ if (dev->flags ^ old_flags)
-+ dev_mc_upload(dev);
-+}
-+
-+unsigned dev_get_flags(const struct net_device *dev)
-+{
-+ unsigned flags;
-+
-+ flags = (dev->flags & ~(IFF_PROMISC |
-+ IFF_ALLMULTI |
-+ IFF_RUNNING)) |
-+ (dev->gflags & (IFF_PROMISC |
-+ IFF_ALLMULTI));
-+
-+ if (netif_running(dev) && netif_carrier_ok(dev))
-+ flags |= IFF_RUNNING;
-+
-+ return flags;
-+}
-+
-+int dev_change_flags(struct net_device *dev, unsigned flags)
-+{
-+ int ret;
-+ int old_flags = dev->flags;
-+
-+ /*
-+ * Set the flags on our device.
-+ */
-+
-+ dev->flags = (flags & (IFF_DEBUG | IFF_NOTRAILERS | IFF_NOARP |
-+ IFF_DYNAMIC | IFF_MULTICAST | IFF_PORTSEL |
-+ IFF_AUTOMEDIA)) |
-+ (dev->flags & (IFF_UP | IFF_VOLATILE | IFF_PROMISC |
-+ IFF_ALLMULTI));
-+
-+ /*
-+ * Load in the correct multicast list now the flags have changed.
-+ */
-+
-+ dev_mc_upload(dev);
-+
-+ /*
-+ * Have we downed the interface. We handle IFF_UP ourselves
-+ * according to user attempts to set it, rather than blindly
-+ * setting it.
-+ */
-+
-+ ret = 0;
-+ if ((old_flags ^ flags) & IFF_UP) { /* Bit is different ? */
-+ ret = ((old_flags & IFF_UP) ? dev_close : dev_open)(dev);
-+
-+ if (!ret)
-+ dev_mc_upload(dev);
-+ }
-+
-+ if (dev->flags & IFF_UP &&
-+ ((old_flags ^ dev->flags) &~ (IFF_UP | IFF_PROMISC | IFF_ALLMULTI |
-+ IFF_VOLATILE)))
-+ notifier_call_chain(&netdev_chain, NETDEV_CHANGE, dev);
-+
-+ if ((flags ^ dev->gflags) & IFF_PROMISC) {
-+ int inc = (flags & IFF_PROMISC) ? +1 : -1;
-+ dev->gflags ^= IFF_PROMISC;
-+ dev_set_promiscuity(dev, inc);
-+ }
-+
-+ /* NOTE: order of synchronization of IFF_PROMISC and IFF_ALLMULTI
-+ is important. Some (broken) drivers set IFF_PROMISC, when
-+ IFF_ALLMULTI is requested not asking us and not reporting.
-+ */
-+ if ((flags ^ dev->gflags) & IFF_ALLMULTI) {
-+ int inc = (flags & IFF_ALLMULTI) ? +1 : -1;
-+ dev->gflags ^= IFF_ALLMULTI;
-+ dev_set_allmulti(dev, inc);
-+ }
-+
-+ if (old_flags ^ dev->flags)
-+ rtmsg_ifinfo(RTM_NEWLINK, dev, old_flags ^ dev->flags);
-+
-+ return ret;
-+}
-+
-+int dev_set_mtu(struct net_device *dev, int new_mtu)
-+{
-+ int err;
-+
-+ if (new_mtu == dev->mtu)
-+ return 0;
-+
-+ /* MTU must be positive. */
-+ if (new_mtu < 0)
-+ return -EINVAL;
-+
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+
-+ err = 0;
-+ if (dev->change_mtu)
-+ err = dev->change_mtu(dev, new_mtu);
-+ else
-+ dev->mtu = new_mtu;
-+ if (!err && dev->flags & IFF_UP)
-+ notifier_call_chain(&netdev_chain,
-+ NETDEV_CHANGEMTU, dev);
-+ return err;
-+}
-+
-+int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa)
-+{
-+ int err;
-+
-+ if (!dev->set_mac_address)
-+ return -EOPNOTSUPP;
-+ if (sa->sa_family != dev->type)
-+ return -EINVAL;
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+ err = dev->set_mac_address(dev, sa);
-+ if (!err)
-+ notifier_call_chain(&netdev_chain, NETDEV_CHANGEADDR, dev);
-+ return err;
-+}
-+
-+/*
-+ * Perform the SIOCxIFxxx calls.
-+ */
-+static int dev_ifsioc(struct ifreq *ifr, unsigned int cmd)
-+{
-+ int err;
-+ struct net_device *dev = __dev_get_by_name(ifr->ifr_name);
-+
-+ if (!dev)
-+ return -ENODEV;
-+
-+ switch (cmd) {
-+ case SIOCGIFFLAGS: /* Get interface flags */
-+ ifr->ifr_flags = dev_get_flags(dev);
-+ return 0;
-+
-+ case SIOCSIFFLAGS: /* Set interface flags */
-+ return dev_change_flags(dev, ifr->ifr_flags);
-+
-+ case SIOCGIFMETRIC: /* Get the metric on the interface
-+ (currently unused) */
-+ ifr->ifr_metric = 0;
-+ return 0;
-+
-+ case SIOCSIFMETRIC: /* Set the metric on the interface
-+ (currently unused) */
-+ return -EOPNOTSUPP;
-+
-+ case SIOCGIFMTU: /* Get the MTU of a device */
-+ ifr->ifr_mtu = dev->mtu;
-+ return 0;
-+
-+ case SIOCSIFMTU: /* Set the MTU of a device */
-+ return dev_set_mtu(dev, ifr->ifr_mtu);
-+
-+ case SIOCGIFHWADDR:
-+ if (!dev->addr_len)
-+ memset(ifr->ifr_hwaddr.sa_data, 0, sizeof ifr->ifr_hwaddr.sa_data);
-+ else
-+ memcpy(ifr->ifr_hwaddr.sa_data, dev->dev_addr,
-+ min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len));
-+ ifr->ifr_hwaddr.sa_family = dev->type;
-+ return 0;
-+
-+ case SIOCSIFHWADDR:
-+ return dev_set_mac_address(dev, &ifr->ifr_hwaddr);
-+
-+ case SIOCSIFHWBROADCAST:
-+ if (ifr->ifr_hwaddr.sa_family != dev->type)
-+ return -EINVAL;
-+ memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data,
-+ min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len));
-+ notifier_call_chain(&netdev_chain,
-+ NETDEV_CHANGEADDR, dev);
-+ return 0;
-+
-+ case SIOCGIFMAP:
-+ ifr->ifr_map.mem_start = dev->mem_start;
-+ ifr->ifr_map.mem_end = dev->mem_end;
-+ ifr->ifr_map.base_addr = dev->base_addr;
-+ ifr->ifr_map.irq = dev->irq;
-+ ifr->ifr_map.dma = dev->dma;
-+ ifr->ifr_map.port = dev->if_port;
-+ return 0;
-+
-+ case SIOCSIFMAP:
-+ if (dev->set_config) {
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+ return dev->set_config(dev, &ifr->ifr_map);
-+ }
-+ return -EOPNOTSUPP;
-+
-+ case SIOCADDMULTI:
-+ if (!dev->set_multicast_list ||
-+ ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
-+ return -EINVAL;
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+ return dev_mc_add(dev, ifr->ifr_hwaddr.sa_data,
-+ dev->addr_len, 1);
-+
-+ case SIOCDELMULTI:
-+ if (!dev->set_multicast_list ||
-+ ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
-+ return -EINVAL;
-+ if (!netif_device_present(dev))
-+ return -ENODEV;
-+ return dev_mc_delete(dev, ifr->ifr_hwaddr.sa_data,
-+ dev->addr_len, 1);
-+
-+ case SIOCGIFINDEX:
-+ ifr->ifr_ifindex = dev->ifindex;
-+ return 0;
-+
-+ case SIOCGIFTXQLEN:
-+ ifr->ifr_qlen = dev->tx_queue_len;
-+ return 0;
-+
-+ case SIOCSIFTXQLEN:
-+ if (ifr->ifr_qlen < 0)
-+ return -EINVAL;
-+ dev->tx_queue_len = ifr->ifr_qlen;
-+ return 0;
-+
-+ case SIOCSIFNAME:
-+ ifr->ifr_newname[IFNAMSIZ-1] = '\0';
-+ return dev_change_name(dev, ifr->ifr_newname);
-+
-+ /*
-+ * Unknown or private ioctl
-+ */
-+
-+ default:
-+ if ((cmd >= SIOCDEVPRIVATE &&
-+ cmd <= SIOCDEVPRIVATE + 15) ||
-+ cmd == SIOCBONDENSLAVE ||
-+ cmd == SIOCBONDRELEASE ||
-+ cmd == SIOCBONDSETHWADDR ||
-+ cmd == SIOCBONDSLAVEINFOQUERY ||
-+ cmd == SIOCBONDINFOQUERY ||
-+ cmd == SIOCBONDCHANGEACTIVE ||
-+ cmd == SIOCGMIIPHY ||
-+ cmd == SIOCGMIIREG ||
-+ cmd == SIOCSMIIREG ||
-+ cmd == SIOCBRADDIF ||
-+ cmd == SIOCBRDELIF ||
-+ cmd == SIOCWANDEV) {
-+ err = -EOPNOTSUPP;
-+ if (dev->do_ioctl) {
-+ if (netif_device_present(dev))
-+ err = dev->do_ioctl(dev, ifr,
-+ cmd);
-+ else
-+ err = -ENODEV;
-+ }
-+ } else
-+ err = -EINVAL;
-+
-+ }
-+ return err;
-+}
-+
-+/*
-+ * This function handles all "interface"-type I/O control requests. The actual
-+ * 'doing' part of this is dev_ifsioc above.
-+ */
-+
-+/**
-+ * dev_ioctl - network device ioctl
-+ * @cmd: command to issue
-+ * @arg: pointer to a struct ifreq in user space
-+ *
-+ * Issue ioctl functions to devices. This is normally called by the
-+ * user space syscall interfaces but can sometimes be useful for
-+ * other purposes. The return value is the return from the syscall if
-+ * positive or a negative errno code on error.
-+ */
-+
-+int dev_ioctl(unsigned int cmd, void __user *arg)
-+{
-+ struct ifreq ifr;
-+ int ret;
-+ char *colon;
-+
-+ /* One special case: SIOCGIFCONF takes ifconf argument
-+ and requires shared lock, because it sleeps writing
-+ to user space.
-+ */
-+
-+ if (cmd == SIOCGIFCONF) {
-+ rtnl_shlock();
-+ ret = dev_ifconf((char __user *) arg);
-+ rtnl_shunlock();
-+ return ret;
-+ }
-+ if (cmd == SIOCGIFNAME)
-+ return dev_ifname((struct ifreq __user *)arg);
-+
-+ if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
-+ return -EFAULT;
-+
-+ ifr.ifr_name[IFNAMSIZ-1] = 0;
-+
-+ colon = strchr(ifr.ifr_name, ':');
-+ if (colon)
-+ *colon = 0;
-+
-+ /*
-+ * See which interface the caller is talking about.
-+ */
-+
-+ switch (cmd) {
-+ /*
-+ * These ioctl calls:
-+ * - can be done by all.
-+ * - atomic and do not require locking.
-+ * - return a value
-+ */
-+ case SIOCGIFFLAGS:
-+ case SIOCGIFMETRIC:
-+ case SIOCGIFMTU:
-+ case SIOCGIFHWADDR:
-+ case SIOCGIFSLAVE:
-+ case SIOCGIFMAP:
-+ case SIOCGIFINDEX:
-+ case SIOCGIFTXQLEN:
-+ dev_load(ifr.ifr_name);
-+ read_lock(&dev_base_lock);
-+ ret = dev_ifsioc(&ifr, cmd);
-+ read_unlock(&dev_base_lock);
-+ if (!ret) {
-+ if (colon)
-+ *colon = ':';
-+ if (copy_to_user(arg, &ifr,
-+ sizeof(struct ifreq)))
-+ ret = -EFAULT;
-+ }
-+ return ret;
-+
-+ case SIOCETHTOOL:
-+ dev_load(ifr.ifr_name);
-+ rtnl_lock();
-+ ret = dev_ethtool(&ifr);
-+ rtnl_unlock();
-+ if (!ret) {
-+ if (colon)
-+ *colon = ':';
-+ if (copy_to_user(arg, &ifr,
-+ sizeof(struct ifreq)))
-+ ret = -EFAULT;
-+ }
-+ return ret;
-+
-+ /*
-+ * These ioctl calls:
-+ * - require superuser power.
-+ * - require strict serialization.
-+ * - return a value
-+ */
-+ case SIOCGMIIPHY:
-+ case SIOCGMIIREG:
-+ case SIOCSIFNAME:
-+ if (!capable(CAP_NET_ADMIN))
-+ return -EPERM;
-+ dev_load(ifr.ifr_name);
-+ rtnl_lock();
-+ ret = dev_ifsioc(&ifr, cmd);
-+ rtnl_unlock();
-+ if (!ret) {
-+ if (colon)
-+ *colon = ':';
-+ if (copy_to_user(arg, &ifr,
-+ sizeof(struct ifreq)))
-+ ret = -EFAULT;
-+ }
-+ return ret;
-+
-+ /*
-+ * These ioctl calls:
-+ * - require superuser power.
-+ * - require strict serialization.
-+ * - do not return a value
-+ */
-+ case SIOCSIFFLAGS:
-+ case SIOCSIFMETRIC:
-+ case SIOCSIFMTU:
-+ case SIOCSIFMAP:
-+ case SIOCSIFHWADDR:
-+ case SIOCSIFSLAVE:
-+ case SIOCADDMULTI:
-+ case SIOCDELMULTI:
-+ case SIOCSIFHWBROADCAST:
-+ case SIOCSIFTXQLEN:
-+ case SIOCSMIIREG:
-+ case SIOCBONDENSLAVE:
-+ case SIOCBONDRELEASE:
-+ case SIOCBONDSETHWADDR:
-+ case SIOCBONDSLAVEINFOQUERY:
-+ case SIOCBONDINFOQUERY:
-+ case SIOCBONDCHANGEACTIVE:
-+ case SIOCBRADDIF:
-+ case SIOCBRDELIF:
-+ if (!capable(CAP_NET_ADMIN))
-+ return -EPERM;
-+ dev_load(ifr.ifr_name);
-+ rtnl_lock();
-+ ret = dev_ifsioc(&ifr, cmd);
-+ rtnl_unlock();
-+ return ret;
-+
-+ case SIOCGIFMEM:
-+ /* Get the per device memory space. We can add this but
-+ * currently do not support it */
-+ case SIOCSIFMEM:
-+ /* Set the per device memory buffer space.
-+ * Not applicable in our case */
-+ case SIOCSIFLINK:
-+ return -EINVAL;
-+
-+ /*
-+ * Unknown or private ioctl.
-+ */
-+ default:
-+ if (cmd == SIOCWANDEV ||
-+ (cmd >= SIOCDEVPRIVATE &&
-+ cmd <= SIOCDEVPRIVATE + 15)) {
-+ dev_load(ifr.ifr_name);
-+ rtnl_lock();
-+ ret = dev_ifsioc(&ifr, cmd);
-+ rtnl_unlock();
-+ if (!ret && copy_to_user(arg, &ifr,
-+ sizeof(struct ifreq)))
-+ ret = -EFAULT;
-+ return ret;
-+ }
-+#ifdef WIRELESS_EXT
-+ /* Take care of Wireless Extensions */
-+ if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) {
-+ /* If command is `set a parameter', or
-+ * `get the encoding parameters', check if
-+ * the user has the right to do it */
-+ if (IW_IS_SET(cmd) || cmd == SIOCGIWENCODE) {
-+ if (!capable(CAP_NET_ADMIN))
-+ return -EPERM;
-+ }
-+ dev_load(ifr.ifr_name);
-+ rtnl_lock();
-+ /* Follow me in net/core/wireless.c */
-+ ret = wireless_process_ioctl(&ifr, cmd);
-+ rtnl_unlock();
-+ if (IW_IS_GET(cmd) &&
-+ copy_to_user(arg, &ifr,
-+ sizeof(struct ifreq)))
-+ ret = -EFAULT;
-+ return ret;
-+ }
-+#endif /* WIRELESS_EXT */
-+ return -EINVAL;
-+ }
-+}
-+
-+
-+/**
-+ * dev_new_index - allocate an ifindex
-+ *
-+ * Returns a suitable unique value for a new device interface
-+ * number. The caller must hold the rtnl semaphore or the
-+ * dev_base_lock to be sure it remains unique.
-+ */
-+static int dev_new_index(void)
-+{
-+ static int ifindex;
-+ for (;;) {
-+ if (++ifindex <= 0)
-+ ifindex = 1;
-+ if (!__dev_get_by_index(ifindex))
-+ return ifindex;
-+ }
-+}
-+
-+static int dev_boot_phase = 1;
-+
-+/* Delayed registration/unregisteration */
-+static DEFINE_SPINLOCK(net_todo_list_lock);
-+static struct list_head net_todo_list = LIST_HEAD_INIT(net_todo_list);
-+
-+static inline void net_set_todo(struct net_device *dev)
-+{
-+ spin_lock(&net_todo_list_lock);
-+ list_add_tail(&dev->todo_list, &net_todo_list);
-+ spin_unlock(&net_todo_list_lock);
-+}
-+
-+/**
-+ * register_netdevice - register a network device
-+ * @dev: device to register
-+ *
-+ * Take a completed network device structure and add it to the kernel
-+ * interfaces. A %NETDEV_REGISTER message is sent to the netdev notifier
-+ * chain. 0 is returned on success. A negative errno code is returned
-+ * on a failure to set up the device, or if the name is a duplicate.
-+ *
-+ * Callers must hold the rtnl semaphore. You may want
-+ * register_netdev() instead of this.
-+ *
-+ * BUGS:
-+ * The locking appears insufficient to guarantee two parallel registers
-+ * will not get the same name.
-+ */
-+
-+int register_netdevice(struct net_device *dev)
-+{
-+ struct hlist_head *head;
-+ struct hlist_node *p;
-+ int ret;
-+
-+ BUG_ON(dev_boot_phase);
-+ ASSERT_RTNL();
-+
-+ /* When net_device's are persistent, this will be fatal. */
-+ BUG_ON(dev->reg_state != NETREG_UNINITIALIZED);
-+
-+ spin_lock_init(&dev->queue_lock);
-+ spin_lock_init(&dev->xmit_lock);
-+ dev->xmit_lock_owner = -1;
-+#ifdef CONFIG_NET_CLS_ACT
-+ spin_lock_init(&dev->ingress_lock);
-+#endif
-+
-+ ret = alloc_divert_blk(dev);
-+ if (ret)
-+ goto out;
-+
-+ dev->iflink = -1;
-+
-+ /* Init, if this function is available */
-+ if (dev->init) {
-+ ret = dev->init(dev);
-+ if (ret) {
-+ if (ret > 0)
-+ ret = -EIO;
-+ goto out_err;
-+ }
-+ }
-+
-+ if (!dev_valid_name(dev->name)) {
-+ ret = -EINVAL;
-+ goto out_err;
-+ }
-+
-+ dev->ifindex = dev_new_index();
-+ if (dev->iflink == -1)
-+ dev->iflink = dev->ifindex;
-+
-+ /* Check for existence of name */
-+ head = dev_name_hash(dev->name);
-+ hlist_for_each(p, head) {
-+ struct net_device *d
-+ = hlist_entry(p, struct net_device, name_hlist);
-+ if (!strncmp(d->name, dev->name, IFNAMSIZ)) {
-+ ret = -EEXIST;
-+ goto out_err;
-+ }
-+ }
-+
-+ /* Fix illegal SG+CSUM combinations. */
-+ if ((dev->features & NETIF_F_SG) &&
-+ !(dev->features & (NETIF_F_IP_CSUM |
-+ NETIF_F_NO_CSUM |
-+ NETIF_F_HW_CSUM))) {
-+ printk("%s: Dropping NETIF_F_SG since no checksum feature.\n",
-+ dev->name);
-+ dev->features &= ~NETIF_F_SG;
-+ }
-+
-+ /* TSO requires that SG is present as well. */
-+ if ((dev->features & NETIF_F_TSO) &&
-+ !(dev->features & NETIF_F_SG)) {
-+ printk("%s: Dropping NETIF_F_TSO since no SG feature.\n",
-+ dev->name);
-+ dev->features &= ~NETIF_F_TSO;
-+ }
-+
-+ /*
-+ * nil rebuild_header routine,
-+ * that should be never called and used as just bug trap.
-+ */
-+
-+ if (!dev->rebuild_header)
-+ dev->rebuild_header = default_rebuild_header;
-+
-+ /*
-+ * Default initial state at registry is that the
-+ * device is present.
-+ */
-+
-+ set_bit(__LINK_STATE_PRESENT, &dev->state);
-+
-+ dev->next = NULL;
-+ dev_init_scheduler(dev);
-+ write_lock_bh(&dev_base_lock);
-+ *dev_tail = dev;
-+ dev_tail = &dev->next;
-+ hlist_add_head(&dev->name_hlist, head);
-+ hlist_add_head(&dev->index_hlist, dev_index_hash(dev->ifindex));
-+ dev_hold(dev);
-+ dev->reg_state = NETREG_REGISTERING;
-+ write_unlock_bh(&dev_base_lock);
-+
-+ /* Notify protocols, that a new device appeared. */
-+ notifier_call_chain(&netdev_chain, NETDEV_REGISTER, dev);
-+
-+ /* Finish registration after unlock */
-+ net_set_todo(dev);
-+ ret = 0;
-+
-+out:
-+ return ret;
-+out_err:
-+ free_divert_blk(dev);
-+ goto out;
-+}
projects / openwrt.git / blobdiff