diff options
Diffstat (limited to 'pfinet/linux-inet/proc.c')
| -rw-r--r-- | pfinet/linux-inet/proc.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/pfinet/linux-inet/proc.c b/pfinet/linux-inet/proc.c new file mode 100644 index 00000000..855dde3f --- /dev/null +++ b/pfinet/linux-inet/proc.c @@ -0,0 +1,251 @@ +/* + * 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. + * + * 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 <asm/system.h> +#include <linux/autoconf.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 "ip.h" +#include "icmp.h" +#include "protocol.h" +#include "tcp.h" +#include "udp.h" +#include <linux/skbuff.h> +#include "sock.h" +#include "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 **s_array; + struct sock *sp; + int i; + int timer_active; + unsigned long dest, src; + unsigned short destp, srcp; + int len=0; + off_t pos=0; + off_t begin=0; + + s_array = pro->sock_array; + len+=sprintf(buffer, "sl local_address rem_address st tx_queue rx_queue tr tm->when uid\n"); +/* + * 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(). + */ + for(i = 0; i < SOCK_ARRAY_SIZE; i++) + { + cli(); + sp = s_array[i]; + while(sp != NULL) + { + 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_active = del_timer(&sp->timer); + if (!timer_active) + sp->timer.expires = 0; + len+=sprintf(buffer+len, "%2d: %08lX:%04X %08lX:%04X %02X %08lX:%08lX %02X:%08lX %08X %d %d\n", + i, src, srcp, dest, destp, sp->state, + format==0?sp->write_seq-sp->rcv_ack_seq:sp->rmem_alloc, + format==0?sp->acked_seq-sp->copied_seq:sp->wmem_alloc, + timer_active, sp->timer.expires, (unsigned) sp->retransmits, + sp->socket?SOCK_INODE(sp->socket)->i_uid:0, + timer_active?sp->timeout:0); + if (timer_active) + add_timer(&sp->timer); + /* + * All sockets with (port mod SOCK_ARRAY_SIZE) = i + * are kept in sock_array[i], so we must follow the + * 'next' link to get them all. + */ + sp = sp->next; + pos=begin+len; + if(pos<offset) + { + len=0; + begin=pos; + } + if(pos>offset+length) + break; + } + sti(); /* We only turn interrupts back on for a moment, but because the interrupt queues anything built up + before this will clear before we jump back and cli, so it's not as bad as it looks */ + if(pos>offset+length) + break; + } + *start=buffer+(offset-begin); + len-=(offset-begin); + if(len>length) + len=length; + return len; +} + + +int tcp_get_info(char *buffer, char **start, off_t offset, int length) +{ + return get__netinfo(&tcp_prot, buffer,0, start, offset, length); +} + + +int udp_get_info(char *buffer, char **start, off_t offset, int length) +{ + return get__netinfo(&udp_prot, buffer,1, start, offset, length); +} + + +int raw_get_info(char *buffer, char **start, off_t offset, int length) +{ + 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) +{ + /* 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,"SOCK_ARRAY_SIZE=%d\n",SOCK_ARRAY_SIZE); + 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); + *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) +{ + 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; +} + |