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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [net/] [ipv4/] [proc.c] - Rev 1772
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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. It is mainly used for debugging and * statistics. * * Version: @(#)proc.c 1.0.5 05/27/93 * * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de> * Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de> * Erik Schoenfelder, <schoenfr@ibr.cs.tu-bs.de> * * Fixes: * Alan Cox : UDP sockets show the rxqueue/txqueue * using hint flag for the netinfo. * Pauline Middelink : identd support * Alan Cox : Make /proc safer. * Erik Schoenfelder : /proc/net/snmp * Alan Cox : Handle dead sockets properly. * Gerhard Koerting : Show both timers * Alan Cox : Allow inode to be NULL (kernel socket) * * 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 <asm/system.h> #include <linux/sched.h> #include <linux/socket.h> #include <linux/net.h> #include <linux/un.h> #include <linux/in.h> #include <linux/param.h> #include <linux/inet.h> #include <linux/netdevice.h> #include <net/ip.h> #include <net/icmp.h> #include <net/protocol.h> #include <net/tcp.h> #include <net/udp.h> #include <linux/skbuff.h> #include <net/sock.h> #include <net/raw.h> /* * Get__netinfo returns the length of that string. * * KNOWN BUGS * As in get_unix_netinfo, the buffer might be too small. If this * happens, get__netinfo returns only part of the available infos. */ static int get__netinfo(struct proto *pro, char *buffer, int format, char **start, off_t offset, int length) { struct sock *sp; int timer_active, timer_active1, timer_active2; unsigned long timer_expires; unsigned long dest, src; unsigned short destp, srcp; int len=0, i = 0; off_t pos=0; off_t begin; char tmpbuf[129]; if (offset < 128) len += sprintf(buffer, "%-127s\n", " sl local_address rem_address st tx_queue " "rx_queue tr tm->when retrnsmt uid timeout inode"); pos = 128; /* * This was very pretty but didn't work when a socket is destroyed * at the wrong moment (eg a syn recv socket getting a reset), or * a memory timer destroy. Instead of playing with timers we just * concede defeat and cli(). */ start_bh_atomic(); sp = pro->sklist_next; while(sp != (struct sock *)pro) { pos += 128; if (pos < offset) goto next; dest = sp->daddr; src = sp->saddr; destp = sp->dummy_th.dest; srcp = sp->dummy_th.source; /* Since we are Little Endian we need to swap the bytes :-( */ destp = ntohs(destp); srcp = ntohs(srcp); timer_active1 = del_timer(&sp->retransmit_timer); timer_active2 = del_timer(&sp->timer); if (!timer_active1) sp->retransmit_timer.expires=0; if (!timer_active2) sp->timer.expires=0; timer_active=0; timer_expires=(unsigned)-1; if (timer_active1 && sp->retransmit_timer.expires < timer_expires) { timer_active=timer_active1; timer_expires=sp->retransmit_timer.expires; } if (timer_active2 && sp->timer.expires < timer_expires) { timer_active=timer_active2; timer_expires=sp->timer.expires; } sprintf(tmpbuf, "%4d: %08lX:%04X %08lX:%04X" " %02X %08X:%08X %02X:%08lX %08X %5d %8d %ld", i, src, srcp, dest, destp, sp->state, format==0?sp->write_seq-sp->rcv_ack_seq:sp->wmem_alloc, format==0?sp->acked_seq-sp->copied_seq:sp->rmem_alloc, timer_active, timer_expires-jiffies, (unsigned) sp->retransmits, (sp->socket&&SOCK_INODE(sp->socket))?SOCK_INODE(sp->socket)->i_uid:0, timer_active?sp->timeout:0, sp->socket && SOCK_INODE(sp->socket) ? SOCK_INODE(sp->socket)->i_ino : 0); if (timer_active1) add_timer(&sp->retransmit_timer); if (timer_active2) add_timer(&sp->timer); len += sprintf(buffer+len, "%-127s\n", tmpbuf); /* * All sockets are kept in the protocols sklist, so we * follow the 'next' link to get them all. */ if(len >= length) break; next: sp = sp->sklist_next; i++; } end_bh_atomic(); begin = len - (pos - offset); *start = buffer + begin; len -= begin; if(len>length) len = length; return len; } int tcp_get_info(char *buffer, char **start, off_t offset, int length, int dummy) { return get__netinfo(&tcp_prot, buffer,0, start, offset, length); } int udp_get_info(char *buffer, char **start, off_t offset, int length, int dummy) { return get__netinfo(&udp_prot, buffer,1, start, offset, length); } int raw_get_info(char *buffer, char **start, off_t offset, int length, int dummy) { return get__netinfo(&raw_prot, buffer,1, start, offset, length); } /* * Report socket allocation statistics [mea@utu.fi] */ int afinet_get_info(char *buffer, char **start, off_t offset, int length, int dummy) { #ifdef CONFIG_SYN_COOKIES extern unsigned int ui_c_send_cookies; static unsigned int ui_c_last_send_cookies = 0; #endif /* From net/socket.c */ extern int socket_get_info(char *, char **, off_t, int); extern struct proto packet_prot; int len = socket_get_info(buffer,start,offset,length); len += sprintf(buffer+len,"TCP: inuse %d highest %d\n", tcp_prot.inuse, tcp_prot.highestinuse); len += sprintf(buffer+len,"UDP: inuse %d highest %d\n", udp_prot.inuse, udp_prot.highestinuse); len += sprintf(buffer+len,"RAW: inuse %d highest %d\n", raw_prot.inuse, raw_prot.highestinuse); len += sprintf(buffer+len,"PAC: inuse %d highest %d\n", packet_prot.inuse, packet_prot.highestinuse); #if defined(CONFIG_SYN_COOKIES) len += sprintf(buffer+len,"SYN_COOKIES: count %u since_last_check %u\n", ui_c_send_cookies, (ui_c_send_cookies - ui_c_last_send_cookies)); ui_c_last_send_cookies = ui_c_send_cookies; #endif *start = buffer + offset; len -= offset; if (len > length) len = length; return len; } /* * Called from the PROCfs module. This outputs /proc/net/snmp. */ int snmp_get_info(char *buffer, char **start, off_t offset, int length, int dummy) { extern struct tcp_mib tcp_statistics; extern struct udp_mib udp_statistics; int len; /* extern unsigned long tcp_rx_miss, tcp_rx_hit1,tcp_rx_hit2; */ len = sprintf (buffer, "Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails FragOKs FragFails FragCreates\n" "Ip: %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n", ip_statistics.IpForwarding, ip_statistics.IpDefaultTTL, ip_statistics.IpInReceives, ip_statistics.IpInHdrErrors, ip_statistics.IpInAddrErrors, ip_statistics.IpForwDatagrams, ip_statistics.IpInUnknownProtos, ip_statistics.IpInDiscards, ip_statistics.IpInDelivers, ip_statistics.IpOutRequests, ip_statistics.IpOutDiscards, ip_statistics.IpOutNoRoutes, ip_statistics.IpReasmTimeout, ip_statistics.IpReasmReqds, ip_statistics.IpReasmOKs, ip_statistics.IpReasmFails, ip_statistics.IpFragOKs, ip_statistics.IpFragFails, ip_statistics.IpFragCreates); len += sprintf (buffer + len, "Icmp: InMsgs InErrors InDestUnreachs InTimeExcds InParmProbs InSrcQuenchs InRedirects InEchos InEchoReps InTimestamps InTimestampReps InAddrMasks InAddrMaskReps OutMsgs OutErrors OutDestUnreachs OutTimeExcds OutParmProbs OutSrcQuenchs OutRedirects OutEchos OutEchoReps OutTimestamps OutTimestampReps OutAddrMasks OutAddrMaskReps\n" "Icmp: %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n", icmp_statistics.IcmpInMsgs, icmp_statistics.IcmpInErrors, icmp_statistics.IcmpInDestUnreachs, icmp_statistics.IcmpInTimeExcds, icmp_statistics.IcmpInParmProbs, icmp_statistics.IcmpInSrcQuenchs, icmp_statistics.IcmpInRedirects, icmp_statistics.IcmpInEchos, icmp_statistics.IcmpInEchoReps, icmp_statistics.IcmpInTimestamps, icmp_statistics.IcmpInTimestampReps, icmp_statistics.IcmpInAddrMasks, icmp_statistics.IcmpInAddrMaskReps, icmp_statistics.IcmpOutMsgs, icmp_statistics.IcmpOutErrors, icmp_statistics.IcmpOutDestUnreachs, icmp_statistics.IcmpOutTimeExcds, icmp_statistics.IcmpOutParmProbs, icmp_statistics.IcmpOutSrcQuenchs, icmp_statistics.IcmpOutRedirects, icmp_statistics.IcmpOutEchos, icmp_statistics.IcmpOutEchoReps, icmp_statistics.IcmpOutTimestamps, icmp_statistics.IcmpOutTimestampReps, icmp_statistics.IcmpOutAddrMasks, icmp_statistics.IcmpOutAddrMaskReps); len += sprintf (buffer + len, "Tcp: RtoAlgorithm RtoMin RtoMax MaxConn ActiveOpens PassiveOpens AttemptFails EstabResets CurrEstab InSegs OutSegs RetransSegs\n" "Tcp: %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n", tcp_statistics.TcpRtoAlgorithm, tcp_statistics.TcpRtoMin, tcp_statistics.TcpRtoMax, tcp_statistics.TcpMaxConn, tcp_statistics.TcpActiveOpens, tcp_statistics.TcpPassiveOpens, tcp_statistics.TcpAttemptFails, tcp_statistics.TcpEstabResets, tcp_statistics.TcpCurrEstab, tcp_statistics.TcpInSegs, tcp_statistics.TcpOutSegs, tcp_statistics.TcpRetransSegs); len += sprintf (buffer + len, "Udp: InDatagrams NoPorts InErrors OutDatagrams\nUdp: %lu %lu %lu %lu\n", udp_statistics.UdpInDatagrams, udp_statistics.UdpNoPorts, udp_statistics.UdpInErrors, udp_statistics.UdpOutDatagrams); /* len += sprintf( buffer + len, "TCP fast path RX: H2: %ul H1: %ul L: %ul\n", tcp_rx_hit2,tcp_rx_hit1,tcp_rx_miss); */ if (offset >= len) { *start = buffer; return 0; } *start = buffer + offset; len -= offset; if (len > length) len = length; return len; }
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