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* 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 1.9 1998/08/26 12:05:11 davem Exp $
*
* Authors: David S. Miller (davem@caip.rutgers.edu)
*
* 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/sched.h>
#include <linux/socket.h>
#include <linux/net.h>
#include <linux/in6.h>
#include <linux/stddef.h>
#include <net/sock.h>
#include <net/tcp.h>
#include <net/transp_v6.h>
#include <net/ipv6.h>
/* This is the main implementation workhorse of all these routines. */
static int get__netinfo6(struct proto *pro, char *buffer, int format, char **start,
off_t offset, int length)
{
struct sock *sp;
struct tcp_opt *tp;
int timer_active, timer_active1, timer_active2;
unsigned long timer_expires;
struct in6_addr *dest, *src;
unsigned short destp, srcp;
int len = 0, i = 0;
off_t pos = 0;
off_t begin;
char tmpbuf[150];
if(offset < 149)
len += sprintf(buffer, "%-148s\n",
" sl " /* 6 */
"local_address " /* 38 */
"remote_address " /* 38 */
"st tx_queue rx_queue tr tm->when retrnsmt" /* 41 */
" uid timeout inode"); /* 21 */
/*----*/
/*144 */
pos = 149;
SOCKHASH_LOCK();
sp = pro->sklist_next;
while(sp != (struct sock *)pro) {
struct tcp_tw_bucket *tw = (struct tcp_tw_bucket *)sp;
int tw_bucket = 0;
pos += 149;
if(pos < offset)
goto next;
tp = &(sp->tp_pinfo.af_tcp);
if((format == 0) && (sp->state == TCP_TIME_WAIT)) {
tw_bucket = 1;
dest = &tw->v6_daddr;
src = &tw->v6_rcv_saddr;
} else {
dest = &sp->net_pinfo.af_inet6.daddr;
src = &sp->net_pinfo.af_inet6.rcv_saddr;
}
destp = ntohs(sp->dport);
srcp = ntohs(sp->sport);
if((format == 0) && (sp->state == TCP_TIME_WAIT)) {
extern int tcp_tw_death_row_slot;
int slot_dist;
timer_active1 = timer_active2 = 0;
timer_active = 3;
slot_dist = tw->death_slot;
if(slot_dist > tcp_tw_death_row_slot)
slot_dist = (TCP_TWKILL_SLOTS - slot_dist) + tcp_tw_death_row_slot;
else
slot_dist = tcp_tw_death_row_slot - slot_dist;
timer_expires = jiffies + (slot_dist * TCP_TWKILL_PERIOD);
} else {
timer_active1 = del_timer(&tp->retransmit_timer);
timer_active2 = del_timer(&sp->timer);
if(!timer_active1) tp->retransmit_timer.expires = 0;
if(!timer_active2) sp->timer.expires = 0;
timer_active = 0;
timer_expires = (unsigned) -1;
}
if(timer_active1 && tp->retransmit_timer.expires < timer_expires) {
timer_active = timer_active1;
timer_expires = tp->retransmit_timer.expires;
}
if(timer_active2 && sp->timer.expires < timer_expires) {
timer_active = timer_active2;
timer_expires = sp->timer.expires;
}
if(timer_active == 0)
timer_expires = jiffies;
sprintf(tmpbuf, "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
"%02X %08X:%08X %02X:%08lX %08X %5d %8d %ld",
i,
src->s6_addr32[0], src->s6_addr32[1],
src->s6_addr32[2], src->s6_addr32[3], srcp,
dest->s6_addr32[0], dest->s6_addr32[1],
dest->s6_addr32[2], dest->s6_addr32[3], destp,
sp->state,
(tw_bucket ?
0 :
(format == 0) ?
tp->write_seq-tp->snd_una :
atomic_read(&sp->wmem_alloc)),
(tw_bucket ?
0 :
(format == 0) ?
tp->rcv_nxt-tp->copied_seq :
atomic_read(&sp->rmem_alloc)),
timer_active, timer_expires-jiffies,
(tw_bucket ? 0 : tp->retransmits),
((!tw_bucket && sp->socket) ?
sp->socket->inode->i_uid : 0),
(!tw_bucket && timer_active) ? sp->timeout : 0,
((!tw_bucket && sp->socket) ?
sp->socket->inode->i_ino : 0));
if(timer_active1) add_timer(&tp->retransmit_timer);
if(timer_active2) add_timer(&sp->timer);
len += sprintf(buffer+len, "%-148s\n", tmpbuf);
if(len >= length)
break;
next:
sp = sp->sklist_next;
i++;
}
SOCKHASH_UNLOCK();
begin = len - (pos - offset);
*start = buffer + begin;
len -= begin;
if(len > length)
len = length;
return len;
}
/* These get exported and registered with procfs in af_inet6.c at init time. */
int tcp6_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
{
return get__netinfo6(&tcpv6_prot, buffer, 0, start, offset, length);
}
int udp6_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
{
return get__netinfo6(&udpv6_prot, buffer, 1, start, offset, length);
}
int raw6_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
{
return get__netinfo6(&rawv6_prot, buffer, 1, start, offset, length);
}
int afinet6_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
{
int len = 0;
len += sprintf(buffer+len, "TCP6: inuse %d highest %d\n",
tcpv6_prot.inuse, tcpv6_prot.highestinuse);
len += sprintf(buffer+len, "UDP6: inuse %d highest %d\n",
udpv6_prot.inuse, udpv6_prot.highestinuse);
len += sprintf(buffer+len, "RAW6: inuse %d highest %d\n",
rawv6_prot.inuse, rawv6_prot.highestinuse);
*start = buffer + offset;
len -= offset;
if(len > length)
len = length;
return len;
}
struct snmp6_item
{
char *name;
unsigned long *ptr;
} snmp6_list[] = {
/* ipv6 mib according to draft-ietf-ipngwg-ipv6-mib-04 */
#define SNMP6_GEN(x) { #x , &ipv6_statistics.x }
SNMP6_GEN(Ip6InReceives),
SNMP6_GEN(Ip6InHdrErrors),
SNMP6_GEN(Ip6InTooBigErrors),
SNMP6_GEN(Ip6InNoRoutes),
SNMP6_GEN(Ip6InAddrErrors),
SNMP6_GEN(Ip6InUnknownProtos),
SNMP6_GEN(Ip6InTruncatedPkts),
SNMP6_GEN(Ip6InDiscards),
SNMP6_GEN(Ip6InDelivers),
SNMP6_GEN(Ip6OutForwDatagrams),
SNMP6_GEN(Ip6OutRequests),
SNMP6_GEN(Ip6OutDiscards),
SNMP6_GEN(Ip6OutNoRoutes),
SNMP6_GEN(Ip6ReasmTimeout),
SNMP6_GEN(Ip6ReasmReqds),
SNMP6_GEN(Ip6ReasmOKs),
SNMP6_GEN(Ip6ReasmFails),
SNMP6_GEN(Ip6FragOKs),
SNMP6_GEN(Ip6FragFails),
SNMP6_GEN(Ip6FragCreates),
SNMP6_GEN(Ip6InMcastPkts),
SNMP6_GEN(Ip6OutMcastPkts),
#undef SNMP6_GEN
/* icmpv6 mib according to draft-ietf-ipngwg-ipv6-icmp-mib-02
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.
*/
#define SNMP6_GEN(x) { #x , &icmpv6_statistics.x }
SNMP6_GEN(Icmp6InMsgs),
SNMP6_GEN(Icmp6InErrors),
SNMP6_GEN(Icmp6InDestUnreachs),
SNMP6_GEN(Icmp6InPktTooBigs),
SNMP6_GEN(Icmp6InTimeExcds),
SNMP6_GEN(Icmp6InParmProblems),
SNMP6_GEN(Icmp6InEchos),
SNMP6_GEN(Icmp6InEchoReplies),
SNMP6_GEN(Icmp6InGroupMembQueries),
SNMP6_GEN(Icmp6InGroupMembResponses),
SNMP6_GEN(Icmp6InGroupMembReductions),
SNMP6_GEN(Icmp6InRouterSolicits),
SNMP6_GEN(Icmp6InRouterAdvertisements),
SNMP6_GEN(Icmp6InNeighborSolicits),
SNMP6_GEN(Icmp6InNeighborAdvertisements),
SNMP6_GEN(Icmp6InRedirects),
SNMP6_GEN(Icmp6OutMsgs),
SNMP6_GEN(Icmp6OutDestUnreachs),
SNMP6_GEN(Icmp6OutPktTooBigs),
SNMP6_GEN(Icmp6OutTimeExcds),
SNMP6_GEN(Icmp6OutParmProblems),
SNMP6_GEN(Icmp6OutEchoReplies),
SNMP6_GEN(Icmp6OutRouterSolicits),
SNMP6_GEN(Icmp6OutNeighborSolicits),
SNMP6_GEN(Icmp6OutNeighborAdvertisements),
SNMP6_GEN(Icmp6OutRedirects),
SNMP6_GEN(Icmp6OutGroupMembResponses),
SNMP6_GEN(Icmp6OutGroupMembReductions),
#undef SNMP6_GEN
#define SNMP6_GEN(x) { "Udp6" #x , &udp_stats_in6.Udp##x }
SNMP6_GEN(InDatagrams),
SNMP6_GEN(NoPorts),
SNMP6_GEN(InErrors),
SNMP6_GEN(OutDatagrams)
#undef SNMP6_GEN
};
int afinet6_get_snmp(char *buffer, char **start, off_t offset, int length,
int dummy)
{
int len = 0;
int i;
for (i=0; i<sizeof(snmp6_list)/sizeof(snmp6_list[0]); i++)
len += sprintf(buffer+len, "%-32s\t%ld\n", snmp6_list[i].name,
*(snmp6_list[i].ptr));
len -= offset;
if (len > length)
len = length;
if(len < 0)
len = 0;
*start = buffer + offset;
return len;
}
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