From patchwork Tue Feb 19 05:20:33 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cong Wang X-Patchwork-Id: 221618 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 042362C0091 for ; Tue, 19 Feb 2013 16:20:51 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751648Ab3BSFUr (ORCPT ); Tue, 19 Feb 2013 00:20:47 -0500 Received: from mail-pa0-f50.google.com ([209.85.220.50]:63275 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751769Ab3BSFUp (ORCPT ); Tue, 19 Feb 2013 00:20:45 -0500 Received: by mail-pa0-f50.google.com with SMTP id fa11so3242129pad.9 for ; Mon, 18 Feb 2013 21:20:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:from:to:cc:subject:date:message-id:x-mailer; bh=B5JHya9X3EN2Bt/6GQaawim8/XtaDA6nfWAfKRLB448=; b=PgdRJinXbpVa1qppwDNRwXXG43RB5wbRwwt0Ft59zQ3+J92SZk+3v1m9DkzAZTFwNx Uw8+bHmZm0KBzf1iOnaqvqjFekjWvaY0RgcM1SARbY3fJ7akdfgRIFSXPkSYcQfuDY6A f/Qop0uVPL5JxqZJMzTjj9UsASyt3QgUZplVQ0VX2hHiZypZoRfKqrPvmdChSPKhz+0f jC7ice+11lxinZbnMlKsPm+IRdxcmZwJYsXvRQ/yxeFEpAeMxW5a9XUqpE41LJbpc5bO NhLIQQkMVdPnmStJ0JB0cBaL6LtP9Jgnf03Y5j/BqJr8AN4aaRnmzivND5OIHNpdv06o 9i4A== X-Received: by 10.66.78.100 with SMTP id a4mr42651117pax.4.1361251245274; Mon, 18 Feb 2013 21:20:45 -0800 (PST) Received: from cr0.redhat.com ([180.129.240.107]) by mx.google.com with ESMTPS id x2sm106126582paw.8.2013.02.18.21.20.41 (version=TLSv1 cipher=RC4-SHA bits=128/128); Mon, 18 Feb 2013 21:20:44 -0800 (PST) From: Cong Wang To: netdev@vger.kernel.org Cc: "David S. Miller" , Cong Wang Subject: [PATCH] net: move procfs code to net/core/net-procfs.c Date: Tue, 19 Feb 2013 13:20:33 +0800 Message-Id: <1361251233-25914-1-git-send-email-xiyou.wangcong@gmail.com> X-Mailer: git-send-email 1.7.7.6 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Cong Wang Similar to net/core/net-sysfs.c, group procfs code to a single unit. Cc: "David S. Miller" Signed-off-by: Cong Wang --- include/linux/netdevice.h | 36 ++++- net/core/Makefile | 1 + net/core/dev.c | 384 +----------------------------------------- net/core/dev_addr_lists.c | 74 -------- net/core/net-procfs.c | 414 +++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 450 insertions(+), 459 deletions(-) create mode 100644 net/core/net-procfs.c diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 920361b..f111b4f 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2692,9 +2692,9 @@ 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); +extern int __init dev_proc_init(void); +#else +#define dev_proc_init() 0 #endif extern int netdev_class_create_file(struct class_attribute *class_attr); @@ -2896,4 +2896,34 @@ do { \ }) #endif +/* + * 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 adversely 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 + */ +#define PTYPE_HASH_SIZE (16) +#define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) + #endif /* _LINUX_NETDEVICE_H */ diff --git a/net/core/Makefile b/net/core/Makefile index 0c5e361..b33b996 100644 --- a/net/core/Makefile +++ b/net/core/Makefile @@ -13,6 +13,7 @@ obj-y += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \ obj-$(CONFIG_XFRM) += flow.o obj-y += net-sysfs.o +obj-$(CONFIG_PROC_FS) += net-procfs.o obj-$(CONFIG_NET_PKTGEN) += pktgen.o obj-$(CONFIG_NETPOLL) += netpoll.o obj-$(CONFIG_NET_DMA) += user_dma.o diff --git a/net/core/dev.c b/net/core/dev.c index decf55f..8d9ddb0 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -97,8 +97,6 @@ #include #include #include -#include -#include #include #include #include @@ -110,7 +108,6 @@ #include #include #include -#include #include #include #include @@ -141,41 +138,10 @@ /* This should be increased if a protocol with a bigger head is added. */ #define GRO_MAX_HEAD (MAX_HEADER + 128) -/* - * 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 adversely 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 - */ - -#define PTYPE_HASH_SIZE (16) -#define PTYPE_HASH_MASK (PTYPE_HASH_SIZE - 1) - static DEFINE_SPINLOCK(ptype_lock); static DEFINE_SPINLOCK(offload_lock); -static struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly; -static struct list_head ptype_all __read_mostly; /* Taps */ +struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly; +struct list_head ptype_all __read_mostly; /* Taps */ static struct list_head offload_base __read_mostly; /* @@ -4217,352 +4183,6 @@ softnet_break: goto out; } -#ifdef CONFIG_PROC_FS - -#define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1) - -#define get_bucket(x) ((x) >> BUCKET_SPACE) -#define get_offset(x) ((x) & ((1 << BUCKET_SPACE) - 1)) -#define set_bucket_offset(b, o) ((b) << BUCKET_SPACE | (o)) - -static inline struct net_device *dev_from_same_bucket(struct seq_file *seq, loff_t *pos) -{ - struct net *net = seq_file_net(seq); - struct net_device *dev; - struct hlist_node *p; - struct hlist_head *h; - unsigned int count = 0, offset = get_offset(*pos); - - h = &net->dev_name_head[get_bucket(*pos)]; - hlist_for_each_entry_rcu(dev, p, h, name_hlist) { - if (++count == offset) - return dev; - } - - return NULL; -} - -static inline struct net_device *dev_from_bucket(struct seq_file *seq, loff_t *pos) -{ - struct net_device *dev; - unsigned int bucket; - - do { - dev = dev_from_same_bucket(seq, pos); - if (dev) - return dev; - - bucket = get_bucket(*pos) + 1; - *pos = set_bucket_offset(bucket, 1); - } while (bucket < NETDEV_HASHENTRIES); - - return NULL; -} - -/* - * This is invoked by the /proc filesystem handler to display a device - * in detail. - */ -void *dev_seq_start(struct seq_file *seq, loff_t *pos) - __acquires(RCU) -{ - rcu_read_lock(); - if (!*pos) - return SEQ_START_TOKEN; - - if (get_bucket(*pos) >= NETDEV_HASHENTRIES) - return NULL; - - return dev_from_bucket(seq, pos); -} - -void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos) -{ - ++*pos; - return dev_from_bucket(seq, pos); -} - -void dev_seq_stop(struct seq_file *seq, void *v) - __releases(RCU) -{ - rcu_read_unlock(); -} - -static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev) -{ - struct rtnl_link_stats64 temp; - const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp); - - seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu " - "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\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); -} - -/* - * 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 softnet_data *softnet_get_online(loff_t *pos) -{ - struct softnet_data *sd = NULL; - - while (*pos < nr_cpu_ids) - if (cpu_online(*pos)) { - sd = &per_cpu(softnet_data, *pos); - break; - } else - ++*pos; - return sd; -} - -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 softnet_data *sd = v; - - seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n", - sd->processed, sd->dropped, sd->time_squeeze, 0, - 0, 0, 0, 0, /* was fastroute */ - sd->cpu_collision, sd->received_rps); - return 0; -} - -static const 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_net(inode, file, &dev_seq_ops, - sizeof(struct seq_net_private)); -} - -static const struct file_operations dev_seq_fops = { - .owner = THIS_MODULE, - .open = dev_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_net, -}; - -static const 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 const struct file_operations softnet_seq_fops = { - .owner = THIS_MODULE, - .open = softnet_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release, -}; - -static void *ptype_get_idx(loff_t pos) -{ - struct packet_type *pt = NULL; - loff_t i = 0; - int t; - - list_for_each_entry_rcu(pt, &ptype_all, list) { - if (i == pos) - return pt; - ++i; - } - - for (t = 0; t < PTYPE_HASH_SIZE; t++) { - list_for_each_entry_rcu(pt, &ptype_base[t], list) { - if (i == pos) - return pt; - ++i; - } - } - return NULL; -} - -static void *ptype_seq_start(struct seq_file *seq, loff_t *pos) - __acquires(RCU) -{ - rcu_read_lock(); - return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN; -} - -static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos) -{ - struct packet_type *pt; - struct list_head *nxt; - int hash; - - ++*pos; - if (v == SEQ_START_TOKEN) - return ptype_get_idx(0); - - pt = v; - nxt = pt->list.next; - if (pt->type == htons(ETH_P_ALL)) { - if (nxt != &ptype_all) - goto found; - hash = 0; - nxt = ptype_base[0].next; - } else - hash = ntohs(pt->type) & PTYPE_HASH_MASK; - - while (nxt == &ptype_base[hash]) { - if (++hash >= PTYPE_HASH_SIZE) - return NULL; - nxt = ptype_base[hash].next; - } -found: - return list_entry(nxt, struct packet_type, list); -} - -static void ptype_seq_stop(struct seq_file *seq, void *v) - __releases(RCU) -{ - rcu_read_unlock(); -} - -static int ptype_seq_show(struct seq_file *seq, void *v) -{ - struct packet_type *pt = v; - - if (v == SEQ_START_TOKEN) - seq_puts(seq, "Type Device Function\n"); - else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) { - if (pt->type == htons(ETH_P_ALL)) - seq_puts(seq, "ALL "); - else - seq_printf(seq, "%04x", ntohs(pt->type)); - - seq_printf(seq, " %-8s %pF\n", - pt->dev ? pt->dev->name : "", pt->func); - } - - return 0; -} - -static const struct seq_operations ptype_seq_ops = { - .start = ptype_seq_start, - .next = ptype_seq_next, - .stop = ptype_seq_stop, - .show = ptype_seq_show, -}; - -static int ptype_seq_open(struct inode *inode, struct file *file) -{ - return seq_open_net(inode, file, &ptype_seq_ops, - sizeof(struct seq_net_private)); -} - -static const struct file_operations ptype_seq_fops = { - .owner = THIS_MODULE, - .open = ptype_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_net, -}; - - -static int __net_init dev_proc_net_init(struct net *net) -{ - int rc = -ENOMEM; - - if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops)) - goto out; - if (!proc_create("softnet_stat", S_IRUGO, net->proc_net, - &softnet_seq_fops)) - goto out_dev; - if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops)) - goto out_softnet; - - if (wext_proc_init(net)) - goto out_ptype; - rc = 0; -out: - return rc; -out_ptype: - remove_proc_entry("ptype", net->proc_net); -out_softnet: - remove_proc_entry("softnet_stat", net->proc_net); -out_dev: - remove_proc_entry("dev", net->proc_net); - goto out; -} - -static void __net_exit dev_proc_net_exit(struct net *net) -{ - wext_proc_exit(net); - - remove_proc_entry("ptype", net->proc_net); - remove_proc_entry("softnet_stat", net->proc_net); - remove_proc_entry("dev", net->proc_net); -} - -static struct pernet_operations __net_initdata dev_proc_ops = { - .init = dev_proc_net_init, - .exit = dev_proc_net_exit, -}; - -static int __init dev_proc_init(void) -{ - return register_pernet_subsys(&dev_proc_ops); -} -#else -#define dev_proc_init() 0 -#endif /* CONFIG_PROC_FS */ - - struct netdev_upper { struct net_device *dev; bool master; diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c index 8956252..bd2eb9d 100644 --- a/net/core/dev_addr_lists.c +++ b/net/core/dev_addr_lists.c @@ -15,7 +15,6 @@ #include #include #include -#include /* * General list handling functions @@ -727,76 +726,3 @@ void dev_mc_init(struct net_device *dev) __hw_addr_init(&dev->mc); } EXPORT_SYMBOL(dev_mc_init); - -#ifdef CONFIG_PROC_FS -#include - -static int dev_mc_seq_show(struct seq_file *seq, void *v) -{ - struct netdev_hw_addr *ha; - struct net_device *dev = v; - - if (v == SEQ_START_TOKEN) - return 0; - - netif_addr_lock_bh(dev); - netdev_for_each_mc_addr(ha, dev) { - int i; - - seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex, - dev->name, ha->refcount, ha->global_use); - - for (i = 0; i < dev->addr_len; i++) - seq_printf(seq, "%02x", ha->addr[i]); - - seq_putc(seq, '\n'); - } - netif_addr_unlock_bh(dev); - return 0; -} - -static const struct seq_operations dev_mc_seq_ops = { - .start = dev_seq_start, - .next = dev_seq_next, - .stop = dev_seq_stop, - .show = dev_mc_seq_show, -}; - -static int dev_mc_seq_open(struct inode *inode, struct file *file) -{ - return seq_open_net(inode, file, &dev_mc_seq_ops, - sizeof(struct seq_net_private)); -} - -static const struct file_operations dev_mc_seq_fops = { - .owner = THIS_MODULE, - .open = dev_mc_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_net, -}; - -#endif - -static int __net_init dev_mc_net_init(struct net *net) -{ - if (!proc_create("dev_mcast", 0, net->proc_net, &dev_mc_seq_fops)) - return -ENOMEM; - return 0; -} - -static void __net_exit dev_mc_net_exit(struct net *net) -{ - remove_proc_entry("dev_mcast", net->proc_net); -} - -static struct pernet_operations __net_initdata dev_mc_net_ops = { - .init = dev_mc_net_init, - .exit = dev_mc_net_exit, -}; - -void __init dev_mcast_init(void) -{ - register_pernet_subsys(&dev_mc_net_ops); -} - diff --git a/net/core/net-procfs.c b/net/core/net-procfs.c new file mode 100644 index 0000000..ac87066 --- /dev/null +++ b/net/core/net-procfs.c @@ -0,0 +1,414 @@ +#include +#include +#include +#include + +#define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1) + +#define get_bucket(x) ((x) >> BUCKET_SPACE) +#define get_offset(x) ((x) & ((1 << BUCKET_SPACE) - 1)) +#define set_bucket_offset(b, o) ((b) << BUCKET_SPACE | (o)) + +extern struct list_head ptype_all __read_mostly; +extern struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly; + +static inline struct net_device *dev_from_same_bucket(struct seq_file *seq, loff_t *pos) +{ + struct net *net = seq_file_net(seq); + struct net_device *dev; + struct hlist_node *p; + struct hlist_head *h; + unsigned int count = 0, offset = get_offset(*pos); + + h = &net->dev_name_head[get_bucket(*pos)]; + hlist_for_each_entry_rcu(dev, p, h, name_hlist) { + if (++count == offset) + return dev; + } + + return NULL; +} + +static inline struct net_device *dev_from_bucket(struct seq_file *seq, loff_t *pos) +{ + struct net_device *dev; + unsigned int bucket; + + do { + dev = dev_from_same_bucket(seq, pos); + if (dev) + return dev; + + bucket = get_bucket(*pos) + 1; + *pos = set_bucket_offset(bucket, 1); + } while (bucket < NETDEV_HASHENTRIES); + + return NULL; +} + +/* + * This is invoked by the /proc filesystem handler to display a device + * in detail. + */ +static void *dev_seq_start(struct seq_file *seq, loff_t *pos) + __acquires(RCU) +{ + rcu_read_lock(); + if (!*pos) + return SEQ_START_TOKEN; + + if (get_bucket(*pos) >= NETDEV_HASHENTRIES) + return NULL; + + return dev_from_bucket(seq, pos); +} + +static void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos) +{ + ++*pos; + return dev_from_bucket(seq, pos); +} + +static void dev_seq_stop(struct seq_file *seq, void *v) + __releases(RCU) +{ + rcu_read_unlock(); +} + +static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev) +{ + struct rtnl_link_stats64 temp; + const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp); + + seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu " + "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\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); +} + +/* + * 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 softnet_data *softnet_get_online(loff_t *pos) +{ + struct softnet_data *sd = NULL; + + while (*pos < nr_cpu_ids) + if (cpu_online(*pos)) { + sd = &per_cpu(softnet_data, *pos); + break; + } else + ++*pos; + return sd; +} + +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 softnet_data *sd = v; + + seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x %08x %08x\n", + sd->processed, sd->dropped, sd->time_squeeze, 0, + 0, 0, 0, 0, /* was fastroute */ + sd->cpu_collision, sd->received_rps); + return 0; +} + +static const 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_net(inode, file, &dev_seq_ops, + sizeof(struct seq_net_private)); +} + +static const struct file_operations dev_seq_fops = { + .owner = THIS_MODULE, + .open = dev_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_net, +}; + +static const 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 const struct file_operations softnet_seq_fops = { + .owner = THIS_MODULE, + .open = softnet_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + +static void *ptype_get_idx(loff_t pos) +{ + struct packet_type *pt = NULL; + loff_t i = 0; + int t; + + list_for_each_entry_rcu(pt, &ptype_all, list) { + if (i == pos) + return pt; + ++i; + } + + for (t = 0; t < PTYPE_HASH_SIZE; t++) { + list_for_each_entry_rcu(pt, &ptype_base[t], list) { + if (i == pos) + return pt; + ++i; + } + } + return NULL; +} + +static void *ptype_seq_start(struct seq_file *seq, loff_t *pos) + __acquires(RCU) +{ + rcu_read_lock(); + return *pos ? ptype_get_idx(*pos - 1) : SEQ_START_TOKEN; +} + +static void *ptype_seq_next(struct seq_file *seq, void *v, loff_t *pos) +{ + struct packet_type *pt; + struct list_head *nxt; + int hash; + + ++*pos; + if (v == SEQ_START_TOKEN) + return ptype_get_idx(0); + + pt = v; + nxt = pt->list.next; + if (pt->type == htons(ETH_P_ALL)) { + if (nxt != &ptype_all) + goto found; + hash = 0; + nxt = ptype_base[0].next; + } else + hash = ntohs(pt->type) & PTYPE_HASH_MASK; + + while (nxt == &ptype_base[hash]) { + if (++hash >= PTYPE_HASH_SIZE) + return NULL; + nxt = ptype_base[hash].next; + } +found: + return list_entry(nxt, struct packet_type, list); +} + +static void ptype_seq_stop(struct seq_file *seq, void *v) + __releases(RCU) +{ + rcu_read_unlock(); +} + +static int ptype_seq_show(struct seq_file *seq, void *v) +{ + struct packet_type *pt = v; + + if (v == SEQ_START_TOKEN) + seq_puts(seq, "Type Device Function\n"); + else if (pt->dev == NULL || dev_net(pt->dev) == seq_file_net(seq)) { + if (pt->type == htons(ETH_P_ALL)) + seq_puts(seq, "ALL "); + else + seq_printf(seq, "%04x", ntohs(pt->type)); + + seq_printf(seq, " %-8s %pF\n", + pt->dev ? pt->dev->name : "", pt->func); + } + + return 0; +} + +static const struct seq_operations ptype_seq_ops = { + .start = ptype_seq_start, + .next = ptype_seq_next, + .stop = ptype_seq_stop, + .show = ptype_seq_show, +}; + +static int ptype_seq_open(struct inode *inode, struct file *file) +{ + return seq_open_net(inode, file, &ptype_seq_ops, + sizeof(struct seq_net_private)); +} + +static const struct file_operations ptype_seq_fops = { + .owner = THIS_MODULE, + .open = ptype_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_net, +}; + + +static int __net_init dev_proc_net_init(struct net *net) +{ + int rc = -ENOMEM; + + if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops)) + goto out; + if (!proc_create("softnet_stat", S_IRUGO, net->proc_net, + &softnet_seq_fops)) + goto out_dev; + if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops)) + goto out_softnet; + + if (wext_proc_init(net)) + goto out_ptype; + rc = 0; +out: + return rc; +out_ptype: + remove_proc_entry("ptype", net->proc_net); +out_softnet: + remove_proc_entry("softnet_stat", net->proc_net); +out_dev: + remove_proc_entry("dev", net->proc_net); + goto out; +} + +static void __net_exit dev_proc_net_exit(struct net *net) +{ + wext_proc_exit(net); + + remove_proc_entry("ptype", net->proc_net); + remove_proc_entry("softnet_stat", net->proc_net); + remove_proc_entry("dev", net->proc_net); +} + +static struct pernet_operations __net_initdata dev_proc_ops = { + .init = dev_proc_net_init, + .exit = dev_proc_net_exit, +}; + +int __init dev_proc_init(void) +{ + return register_pernet_subsys(&dev_proc_ops); +} + +static int dev_mc_seq_show(struct seq_file *seq, void *v) +{ + struct netdev_hw_addr *ha; + struct net_device *dev = v; + + if (v == SEQ_START_TOKEN) + return 0; + + netif_addr_lock_bh(dev); + netdev_for_each_mc_addr(ha, dev) { + int i; + + seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex, + dev->name, ha->refcount, ha->global_use); + + for (i = 0; i < dev->addr_len; i++) + seq_printf(seq, "%02x", ha->addr[i]); + + seq_putc(seq, '\n'); + } + netif_addr_unlock_bh(dev); + return 0; +} + +static const struct seq_operations dev_mc_seq_ops = { + .start = dev_seq_start, + .next = dev_seq_next, + .stop = dev_seq_stop, + .show = dev_mc_seq_show, +}; + +static int dev_mc_seq_open(struct inode *inode, struct file *file) +{ + return seq_open_net(inode, file, &dev_mc_seq_ops, + sizeof(struct seq_net_private)); +} + +static const struct file_operations dev_mc_seq_fops = { + .owner = THIS_MODULE, + .open = dev_mc_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release_net, +}; + +static int __net_init dev_mc_net_init(struct net *net) +{ + if (!proc_create("dev_mcast", 0, net->proc_net, &dev_mc_seq_fops)) + return -ENOMEM; + return 0; +} + +static void __net_exit dev_mc_net_exit(struct net *net) +{ + remove_proc_entry("dev_mcast", net->proc_net); +} + +static struct pernet_operations __net_initdata dev_mc_net_ops = { + .init = dev_mc_net_init, + .exit = dev_mc_net_exit, +}; + +void __init dev_mcast_init(void) +{ + register_pernet_subsys(&dev_mc_net_ops); +}