Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 381 insertions, 0 deletions

diff --git a/net/wanrouter/wanproc.c b/net/wanrouter/wanproc.c
new file mode 100644
index 000000000000..c28ba5a47209
--- /dev/null
+++ b/net/wanrouter/wanproc.c
@@ -0,0 +1,381 @@
+/*****************************************************************************
+* wanproc.c     WAN Router Module. /proc filesystem interface.
+*
+*               This module is completely hardware-independent and provides
+*               access to the router using Linux /proc filesystem.
+*
+* Author:       Gideon Hack
+*
+* Copyright:    (c) 1995-1999 Sangoma Technologies Inc.
+*
+*               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.
+* ============================================================================
+* Jun 02, 1999  Gideon Hack     Updates for Linux 2.2.X kernels.
+* Jun 29, 1997  Alan Cox        Merged with 1.0.3 vendor code
+* Jan 29, 1997  Gene Kozin      v1.0.1. Implemented /proc read routines
+* Jan 30, 1997  Alan Cox        Hacked around for 2.1
+* Dec 13, 1996  Gene Kozin      Initial version (based on Sangoma's WANPIPE)
+*****************************************************************************/
+
+#include <linux/config.h>
+#include <linux/init.h>         /* __initfunc et al. */
+#include <linux/stddef.h>       /* offsetof(), etc. */
+#include <linux/errno.h>        /* return codes */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/wanrouter.h>    /* WAN router API definitions */
+#include <linux/seq_file.h>
+#include <linux/smp_lock.h>
+
+#include <asm/io.h>
+
+#define PROC_STATS_FORMAT "%30s: %12lu\n"
+
+/****** Defines and Macros **************************************************/
+
+#define PROT_DECODE(prot) ((prot == WANCONFIG_FR) ? " FR" :\
+                              (prot == WANCONFIG_X25) ? " X25" : \
+                                 (prot == WANCONFIG_PPP) ? " PPP" : \
+                                    (prot == WANCONFIG_CHDLC) ? " CHDLC": \
+                                       (prot == WANCONFIG_MPPP) ? " MPPP" : \
+                                           " Unknown" )
+
+/****** Function Prototypes *************************************************/
+
+#ifdef CONFIG_PROC_FS
+
+/* Miscellaneous */
+
+/*
+ *      Structures for interfacing with the /proc filesystem.
+ *      Router creates its own directory /proc/net/router with the folowing
+ *      entries:
+ *      config          device configuration
+ *      status          global device statistics
+ *      <device>        entry for each WAN device
+ */
+
+/*
+ *      Generic /proc/net/router/<file> file and inode operations
+ */
+
+/*
+ *      /proc/net/router
+ */
+
+static struct proc_dir_entry *proc_router;
+
+/* Strings */
+
+/*
+ *      Interface functions
+ */
+
+/****** Proc filesystem entry points ****************************************/
+
+/*
+ *      Iterator
+ */
+static void *r_start(struct seq_file *m, loff_t *pos)
+{
+        struct wan_device *wandev;
+        loff_t l = *pos;
+
+        lock_kernel();
+        if (!l--)
+                return SEQ_START_TOKEN;
+        for (wandev = wanrouter_router_devlist; l-- && wandev;
+             wandev = wandev->next)
+                ;
+        return wandev;
+}
+
+static void *r_next(struct seq_file *m, void *v, loff_t *pos)
+{
+        struct wan_device *wandev = v;
+        (*pos)++;
+        return (v == SEQ_START_TOKEN) ? wanrouter_router_devlist : wandev->next;
+}
+
+static void r_stop(struct seq_file *m, void *v)
+{
+        unlock_kernel();
+}
+
+static int config_show(struct seq_file *m, void *v)
+{
+        struct wan_device *p = v;
+        if (v == SEQ_START_TOKEN) {
+                seq_puts(m, "Device name    | port |IRQ|DMA|  mem.addr  |"
+                            "mem.size|option1|option2|option3|option4\n");
+                return 0;
+        }
+        if (!p->state)
+                return 0;
+        seq_printf(m, "%-15s|0x%-4X|%3u|%3u| 0x%-8lX |0x%-6X|%7u|%7u|%7u|%7u\n",
+                        p->name, p->ioport, p->irq, p->dma, p->maddr, p->msize,
+                        p->hw_opt[0], p->hw_opt[1], p->hw_opt[2], p->hw_opt[3]);
+        return 0;
+}
+
+static int status_show(struct seq_file *m, void *v)
+{
+        struct wan_device *p = v;
+        if (v == SEQ_START_TOKEN) {
+                seq_puts(m, "Device name    |protocol|station|interface|"
+                            "clocking|baud rate| MTU |ndev|link state\n");
+                return 0;
+        }
+        if (!p->state)
+                return 0;
+        seq_printf(m, "%-15s|%-8s| %-7s| %-9s|%-8s|%9u|%5u|%3u |",
+                p->name,
+                PROT_DECODE(p->config_id),
+                p->config_id == WANCONFIG_FR ?
+                        (p->station ? "Node" : "CPE") :
+                        (p->config_id == WANCONFIG_X25 ?
+                        (p->station ? "DCE" : "DTE") :
+                        ("N/A")),
+                p->interface ? "V.35" : "RS-232",
+                p->clocking ? "internal" : "external",
+                p->bps,
+                p->mtu,
+                p->ndev);
+
+        switch (p->state) {
+        case WAN_UNCONFIGURED:
+                seq_printf(m, "%-12s\n", "unconfigured");
+                break;
+        case WAN_DISCONNECTED:
+                seq_printf(m, "%-12s\n", "disconnected");
+                break;
+        case WAN_CONNECTING:
+                seq_printf(m, "%-12s\n", "connecting");
+                break;
+        case WAN_CONNECTED:
+                seq_printf(m, "%-12s\n", "connected");
+                break;
+        default:
+                seq_printf(m, "%-12s\n", "invalid");
+                break;
+        }
+        return 0;
+}
+
+static struct seq_operations config_op = {
+        .start  = r_start,
+        .next   = r_next,
+        .stop   = r_stop,
+        .show   = config_show,
+};
+
+static struct seq_operations status_op = {
+        .start  = r_start,
+        .next   = r_next,
+        .stop   = r_stop,
+        .show   = status_show,
+};
+
+static int config_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &config_op);
+}
+
+static int status_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &status_op);
+}
+
+static struct file_operations config_fops = {
+        .owner   = THIS_MODULE,
+        .open    = config_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = seq_release,
+};
+
+static struct file_operations status_fops = {
+        .owner   = THIS_MODULE,
+        .open    = status_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = seq_release,
+};
+
+static int wandev_show(struct seq_file *m, void *v)
+{
+        struct wan_device *wandev = m->private;
+
+        if (wandev->magic != ROUTER_MAGIC)
+                return 0;
+
+        if (!wandev->state) {
+                seq_puts(m, "device is not configured!\n");
+                return 0;
+        }
+
+        /* Update device statistics */
+        if (wandev->update) {
+                int err = wandev->update(wandev);
+                if (err == -EAGAIN) {
+                        seq_puts(m, "Device is busy!\n");
+                        return 0;
+                }
+                if (err) {
+                        seq_puts(m, "Device is not configured!\n");
+                        return 0;
+                }
+        }
+
+        seq_printf(m, PROC_STATS_FORMAT,
+                "total packets received", wandev->stats.rx_packets);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "total packets transmitted", wandev->stats.tx_packets);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "total bytes received", wandev->stats.rx_bytes);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "total bytes transmitted", wandev->stats.tx_bytes);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "bad packets received", wandev->stats.rx_errors);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "packet transmit problems", wandev->stats.tx_errors);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "received frames dropped", wandev->stats.rx_dropped);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "transmit frames dropped", wandev->stats.tx_dropped);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "multicast packets received", wandev->stats.multicast);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "transmit collisions", wandev->stats.collisions);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "receive length errors", wandev->stats.rx_length_errors);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "receiver overrun errors", wandev->stats.rx_over_errors);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "CRC errors", wandev->stats.rx_crc_errors);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "frame format errors (aborts)", wandev->stats.rx_frame_errors);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "receiver fifo overrun", wandev->stats.rx_fifo_errors);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "receiver missed packet", wandev->stats.rx_missed_errors);
+        seq_printf(m, PROC_STATS_FORMAT,
+                "aborted frames transmitted", wandev->stats.tx_aborted_errors);
+        return 0;
+}
+
+static int wandev_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, wandev_show, PDE(inode)->data);
+}
+
+static struct file_operations wandev_fops = {
+        .owner   = THIS_MODULE,
+        .open    = wandev_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = single_release,
+        .ioctl   = wanrouter_ioctl,
+};
+
+/*
+ *      Initialize router proc interface.
+ */
+
+int __init wanrouter_proc_init(void)
+{
+        struct proc_dir_entry *p;
+        proc_router = proc_mkdir(ROUTER_NAME, proc_net);
+        if (!proc_router)
+                goto fail;
+
+        p = create_proc_entry("config", S_IRUGO, proc_router);
+        if (!p)
+                goto fail_config;
+        p->proc_fops = &config_fops;
+        p = create_proc_entry("status", S_IRUGO, proc_router);
+        if (!p)
+                goto fail_stat;
+        p->proc_fops = &status_fops;
+        return 0;
+fail_stat:
+        remove_proc_entry("config", proc_router);
+fail_config:
+        remove_proc_entry(ROUTER_NAME, proc_net);
+fail:
+        return -ENOMEM;
+}
+
+/*
+ *      Clean up router proc interface.
+ */
+
+void wanrouter_proc_cleanup(void)
+{
+        remove_proc_entry("config", proc_router);
+        remove_proc_entry("status", proc_router);
+        remove_proc_entry(ROUTER_NAME, proc_net);
+}
+
+/*
+ *      Add directory entry for WAN device.
+ */
+
+int wanrouter_proc_add(struct wan_device* wandev)
+{
+        if (wandev->magic != ROUTER_MAGIC)
+                return -EINVAL;
+
+        wandev->dent = create_proc_entry(wandev->name, S_IRUGO, proc_router);
+        if (!wandev->dent)
+                return -ENOMEM;
+        wandev->dent->proc_fops = &wandev_fops;
+        wandev->dent->data      = wandev;
+        return 0;
+}
+
+/*
+ *      Delete directory entry for WAN device.
+ */
+int wanrouter_proc_delete(struct wan_device* wandev)
+{
+        if (wandev->magic != ROUTER_MAGIC)
+                return -EINVAL;
+        remove_proc_entry(wandev->name, proc_router);
+        return 0;
+}
+
+#else
+
+/*
+ *      No /proc - output stubs
+ */
+
+int __init wanrouter_proc_init(void)
+{
+        return 0;
+}
+
+void wanrouter_proc_cleanup(void)
+{
+}
+
+int wanrouter_proc_add(struct wan_device *wandev)
+{
+        return 0;
+}
+
+int wanrouter_proc_delete(struct wan_device *wandev)
+{
+        return 0;
+}
+
+#endif
+
+/*
+ *      End
+ */
+