1 files changed, 303 insertions, 0 deletions

diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
new file mode 100644
index 000000000000..334a5967831e
--- /dev/null
+++ b/net/ipv6/proc.c
@@ -0,0 +1,303 @@
+/*
+ * INET         An implementation of the TCP/IP protocol suite for the LINUX
+ *              operating system.  INET is implemented using the  BSD Socket
+ *              interface as the means of communication with the user level.
+ *
+ *              This file implements the various access functions for the
+ *              PROC file system.  This is very similar to the IPv4 version,
+ *              except it reports the sockets in the INET6 address family.
+ *
+ * Version:     $Id: proc.c,v 1.17 2002/02/01 22:01:04 davem Exp $
+ *
+ * Authors:     David S. Miller (davem@caip.rutgers.edu)
+ *              YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
+ *
+ *              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.
+ */
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <linux/socket.h>
+#include <linux/net.h>
+#include <linux/ipv6.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/stddef.h>
+#include <net/sock.h>
+#include <net/tcp.h>
+#include <net/transp_v6.h>
+#include <net/ipv6.h>
+
+#ifdef CONFIG_PROC_FS
+static struct proc_dir_entry *proc_net_devsnmp6;
+
+static int fold_prot_inuse(struct proto *proto)
+{
+        int res = 0;
+        int cpu;
+
+        for (cpu=0; cpu<NR_CPUS; cpu++)
+                res += proto->stats[cpu].inuse;
+
+        return res;
+}
+
+static int sockstat6_seq_show(struct seq_file *seq, void *v)
+{
+        seq_printf(seq, "TCP6: inuse %d\n",
+                       fold_prot_inuse(&tcpv6_prot));
+        seq_printf(seq, "UDP6: inuse %d\n",
+                       fold_prot_inuse(&udpv6_prot));
+        seq_printf(seq, "RAW6: inuse %d\n",
+                       fold_prot_inuse(&rawv6_prot));
+        seq_printf(seq, "FRAG6: inuse %d memory %d\n",
+                       ip6_frag_nqueues, atomic_read(&ip6_frag_mem));
+        return 0;
+}
+
+static struct snmp_mib snmp6_ipstats_list[] = {
+/* ipv6 mib according to RFC 2465 */
+        SNMP_MIB_ITEM("Ip6InReceives", IPSTATS_MIB_INRECEIVES),
+        SNMP_MIB_ITEM("Ip6InHdrErrors", IPSTATS_MIB_INHDRERRORS),
+        SNMP_MIB_ITEM("Ip6InTooBigErrors", IPSTATS_MIB_INTOOBIGERRORS),
+        SNMP_MIB_ITEM("Ip6InNoRoutes", IPSTATS_MIB_INNOROUTES),
+        SNMP_MIB_ITEM("Ip6InAddrErrors", IPSTATS_MIB_INADDRERRORS),
+        SNMP_MIB_ITEM("Ip6InUnknownProtos", IPSTATS_MIB_INUNKNOWNPROTOS),
+        SNMP_MIB_ITEM("Ip6InTruncatedPkts", IPSTATS_MIB_INTRUNCATEDPKTS),
+        SNMP_MIB_ITEM("Ip6InDiscards", IPSTATS_MIB_INDISCARDS),
+        SNMP_MIB_ITEM("Ip6InDelivers", IPSTATS_MIB_INDELIVERS),
+        SNMP_MIB_ITEM("Ip6OutForwDatagrams", IPSTATS_MIB_OUTFORWDATAGRAMS),
+        SNMP_MIB_ITEM("Ip6OutRequests", IPSTATS_MIB_OUTREQUESTS),
+        SNMP_MIB_ITEM("Ip6OutDiscards", IPSTATS_MIB_OUTDISCARDS),
+        SNMP_MIB_ITEM("Ip6OutNoRoutes", IPSTATS_MIB_OUTNOROUTES),
+        SNMP_MIB_ITEM("Ip6ReasmTimeout", IPSTATS_MIB_REASMTIMEOUT),
+        SNMP_MIB_ITEM("Ip6ReasmReqds", IPSTATS_MIB_REASMREQDS),
+        SNMP_MIB_ITEM("Ip6ReasmOKs", IPSTATS_MIB_REASMOKS),
+        SNMP_MIB_ITEM("Ip6ReasmFails", IPSTATS_MIB_REASMFAILS),
+        SNMP_MIB_ITEM("Ip6FragOKs", IPSTATS_MIB_FRAGOKS),
+        SNMP_MIB_ITEM("Ip6FragFails", IPSTATS_MIB_FRAGFAILS),
+        SNMP_MIB_ITEM("Ip6FragCreates", IPSTATS_MIB_FRAGCREATES),
+        SNMP_MIB_ITEM("Ip6InMcastPkts", IPSTATS_MIB_INMCASTPKTS),
+        SNMP_MIB_ITEM("Ip6OutMcastPkts", IPSTATS_MIB_OUTMCASTPKTS),
+        SNMP_MIB_SENTINEL
+};
+
+static struct snmp_mib snmp6_icmp6_list[] = {
+/* icmpv6 mib according to RFC 2466
+
+   Exceptions:  {In|Out}AdminProhibs are removed, because I see
+                no good reasons to account them separately
+                of another dest.unreachs.
+                OutErrs is zero identically.
+                OutEchos too.
+                OutRouterAdvertisements too.
+                OutGroupMembQueries too.
+ */
+        SNMP_MIB_ITEM("Icmp6InMsgs", ICMP6_MIB_INMSGS),
+        SNMP_MIB_ITEM("Icmp6InErrors", ICMP6_MIB_INERRORS),
+        SNMP_MIB_ITEM("Icmp6InDestUnreachs", ICMP6_MIB_INDESTUNREACHS),
+        SNMP_MIB_ITEM("Icmp6InPktTooBigs", ICMP6_MIB_INPKTTOOBIGS),
+        SNMP_MIB_ITEM("Icmp6InTimeExcds", ICMP6_MIB_INTIMEEXCDS),
+        SNMP_MIB_ITEM("Icmp6InParmProblems", ICMP6_MIB_INPARMPROBLEMS),
+        SNMP_MIB_ITEM("Icmp6InEchos", ICMP6_MIB_INECHOS),
+        SNMP_MIB_ITEM("Icmp6InEchoReplies", ICMP6_MIB_INECHOREPLIES),
+        SNMP_MIB_ITEM("Icmp6InGroupMembQueries", ICMP6_MIB_INGROUPMEMBQUERIES),
+        SNMP_MIB_ITEM("Icmp6InGroupMembResponses", ICMP6_MIB_INGROUPMEMBRESPONSES),
+        SNMP_MIB_ITEM("Icmp6InGroupMembReductions", ICMP6_MIB_INGROUPMEMBREDUCTIONS),
+        SNMP_MIB_ITEM("Icmp6InRouterSolicits", ICMP6_MIB_INROUTERSOLICITS),
+        SNMP_MIB_ITEM("Icmp6InRouterAdvertisements", ICMP6_MIB_INROUTERADVERTISEMENTS),
+        SNMP_MIB_ITEM("Icmp6InNeighborSolicits", ICMP6_MIB_INNEIGHBORSOLICITS),
+        SNMP_MIB_ITEM("Icmp6InNeighborAdvertisements", ICMP6_MIB_INNEIGHBORADVERTISEMENTS),
+        SNMP_MIB_ITEM("Icmp6InRedirects", ICMP6_MIB_INREDIRECTS),
+        SNMP_MIB_ITEM("Icmp6OutMsgs", ICMP6_MIB_OUTMSGS),
+        SNMP_MIB_ITEM("Icmp6OutDestUnreachs", ICMP6_MIB_OUTDESTUNREACHS),
+        SNMP_MIB_ITEM("Icmp6OutPktTooBigs", ICMP6_MIB_OUTPKTTOOBIGS),
+        SNMP_MIB_ITEM("Icmp6OutTimeExcds", ICMP6_MIB_OUTTIMEEXCDS),
+        SNMP_MIB_ITEM("Icmp6OutParmProblems", ICMP6_MIB_OUTPARMPROBLEMS),
+        SNMP_MIB_ITEM("Icmp6OutEchoReplies", ICMP6_MIB_OUTECHOREPLIES),
+        SNMP_MIB_ITEM("Icmp6OutRouterSolicits", ICMP6_MIB_OUTROUTERSOLICITS),
+        SNMP_MIB_ITEM("Icmp6OutNeighborSolicits", ICMP6_MIB_OUTNEIGHBORSOLICITS),
+        SNMP_MIB_ITEM("Icmp6OutNeighborAdvertisements", ICMP6_MIB_OUTNEIGHBORADVERTISEMENTS),
+        SNMP_MIB_ITEM("Icmp6OutRedirects", ICMP6_MIB_OUTREDIRECTS),
+        SNMP_MIB_ITEM("Icmp6OutGroupMembResponses", ICMP6_MIB_OUTGROUPMEMBRESPONSES),
+        SNMP_MIB_ITEM("Icmp6OutGroupMembReductions", ICMP6_MIB_OUTGROUPMEMBREDUCTIONS),
+        SNMP_MIB_SENTINEL
+};
+
+static struct snmp_mib snmp6_udp6_list[] = {
+        SNMP_MIB_ITEM("Udp6InDatagrams", UDP_MIB_INDATAGRAMS),
+        SNMP_MIB_ITEM("Udp6NoPorts", UDP_MIB_NOPORTS),
+        SNMP_MIB_ITEM("Udp6InErrors", UDP_MIB_INERRORS),
+        SNMP_MIB_ITEM("Udp6OutDatagrams", UDP_MIB_OUTDATAGRAMS),
+        SNMP_MIB_SENTINEL
+};
+
+static unsigned long
+fold_field(void *mib[], int offt)
+{
+        unsigned long res = 0;
+        int i;
+ 
+        for (i = 0; i < NR_CPUS; i++) {
+                if (!cpu_possible(i))
+                        continue;
+                res += *(((unsigned long *)per_cpu_ptr(mib[0], i)) + offt);
+                res += *(((unsigned long *)per_cpu_ptr(mib[1], i)) + offt);
+        }
+        return res;
+}
+
+static inline void
+snmp6_seq_show_item(struct seq_file *seq, void **mib, struct snmp_mib *itemlist)
+{
+        int i;
+        for (i=0; itemlist[i].name; i++)
+                seq_printf(seq, "%-32s\t%lu\n", itemlist[i].name, 
+                                fold_field(mib, itemlist[i].entry));
+}
+
+static int snmp6_seq_show(struct seq_file *seq, void *v)
+{
+        struct inet6_dev *idev = (struct inet6_dev *)seq->private;
+
+        if (idev) {
+                seq_printf(seq, "%-32s\t%u\n", "ifIndex", idev->dev->ifindex);
+                snmp6_seq_show_item(seq, (void **)idev->stats.icmpv6, snmp6_icmp6_list);
+        } else {
+                snmp6_seq_show_item(seq, (void **)ipv6_statistics, snmp6_ipstats_list);
+                snmp6_seq_show_item(seq, (void **)icmpv6_statistics, snmp6_icmp6_list);
+                snmp6_seq_show_item(seq, (void **)udp_stats_in6, snmp6_udp6_list);
+        }
+        return 0;
+}
+
+static int sockstat6_seq_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, sockstat6_seq_show, NULL);
+}
+
+static struct file_operations sockstat6_seq_fops = {
+        .owner   = THIS_MODULE,
+        .open    = sockstat6_seq_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = single_release,
+};
+
+static int snmp6_seq_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, snmp6_seq_show, PDE(inode)->data);
+}
+
+static struct file_operations snmp6_seq_fops = {
+        .owner   = THIS_MODULE,
+        .open    = snmp6_seq_open,
+        .read    = seq_read,
+        .llseek  = seq_lseek,
+        .release = single_release,
+};
+
+int snmp6_register_dev(struct inet6_dev *idev)
+{
+        struct proc_dir_entry *p;
+
+        if (!idev || !idev->dev)
+                return -EINVAL;
+
+        if (!proc_net_devsnmp6)
+                return -ENOENT;
+
+        p = create_proc_entry(idev->dev->name, S_IRUGO, proc_net_devsnmp6);
+        if (!p)
+                return -ENOMEM;
+
+        p->data = idev;
+        p->proc_fops = &snmp6_seq_fops;
+
+        idev->stats.proc_dir_entry = p;
+        return 0;
+}
+
+int snmp6_unregister_dev(struct inet6_dev *idev)
+{
+        if (!proc_net_devsnmp6)
+                return -ENOENT;
+        if (!idev || !idev->stats.proc_dir_entry)
+                return -EINVAL;
+        remove_proc_entry(idev->stats.proc_dir_entry->name,
+                          proc_net_devsnmp6);
+        return 0;
+}
+
+int __init ipv6_misc_proc_init(void)
+{
+        int rc = 0;
+
+        if (!proc_net_fops_create("snmp6", S_IRUGO, &snmp6_seq_fops))
+                goto proc_snmp6_fail;
+
+        proc_net_devsnmp6 = proc_mkdir("dev_snmp6", proc_net);
+        if (!proc_net_devsnmp6)
+                goto proc_dev_snmp6_fail;
+
+        if (!proc_net_fops_create("sockstat6", S_IRUGO, &sockstat6_seq_fops))
+                goto proc_sockstat6_fail;
+out:
+        return rc;
+
+proc_sockstat6_fail:
+        proc_net_remove("dev_snmp6");
+proc_dev_snmp6_fail:
+        proc_net_remove("snmp6");
+proc_snmp6_fail:
+        rc = -ENOMEM;
+        goto out;
+}
+
+void ipv6_misc_proc_exit(void)
+{
+        proc_net_remove("sockstat6");
+        proc_net_remove("dev_snmp6");
+        proc_net_remove("snmp6");
+}
+
+#else   /* CONFIG_PROC_FS */
+
+
+int snmp6_register_dev(struct inet6_dev *idev)
+{
+        return 0;
+}
+
+int snmp6_unregister_dev(struct inet6_dev *idev)
+{
+        return 0;
+}
+#endif  /* CONFIG_PROC_FS */
+
+int snmp6_alloc_dev(struct inet6_dev *idev)
+{
+        int err = -ENOMEM;
+
+        if (!idev || !idev->dev)
+                return -EINVAL;
+
+        if (snmp6_mib_init((void **)idev->stats.icmpv6, sizeof(struct icmpv6_mib),
+                           __alignof__(struct icmpv6_mib)) < 0)
+                goto err_icmp;
+
+        return 0;
+
+err_icmp:
+        return err;
+}
+
+int snmp6_free_dev(struct inet6_dev *idev)
+{
+        snmp6_mib_free((void **)idev->stats.icmpv6);
+        return 0;
+}
+
+