f1a6e1ead8
find . -name \*.[ch] | xargs -i emacs -batch {} \
-l /gnome/compile/libgtop/misc/format.el -f save-buffer
December 26, 1999
Martin
286 lines
7.0 KiB
C
286 lines
7.0 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, October 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/netload.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#if !defined (_LIBC) && defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
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/* GNU LibC */
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#include <net/if.h>
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#include <netinet/ip_icmp.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/tcp.h>
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#include <netinet/udp.h>
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#include <net/if.h>
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#else /* Libc 5 */
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#include <linux/if.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/icmp.h>
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#include <linux/tcp.h>
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#include <linux/udp.h>
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#endif
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#define _GLIBTOP_IP_FW_ACCTIN 0x1000 /* Account incoming packets only. */
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#define _GLIBTOP_IP_FW_ACCTOUT 0x2000 /* Account outgoing packets only. */
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static const unsigned long _glibtop_sysdeps_netload =
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(1L << GLIBTOP_NETLOAD_ERRORS_IN) +
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(1L << GLIBTOP_NETLOAD_ERRORS_OUT) +
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(1L << GLIBTOP_NETLOAD_COLLISIONS);
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static const unsigned long _glibtop_sysdeps_netload_bytes =
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(1L << GLIBTOP_NETLOAD_BYTES_IN) +
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(1L << GLIBTOP_NETLOAD_BYTES_OUT) +
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(1L << GLIBTOP_NETLOAD_BYTES_TOTAL);
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static const unsigned long _glibtop_sysdeps_netload_packets =
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(1L << GLIBTOP_NETLOAD_PACKETS_IN) +
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(1L << GLIBTOP_NETLOAD_PACKETS_OUT) +
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(1L << GLIBTOP_NETLOAD_PACKETS_TOTAL);
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static const unsigned long _glibtop_sysdeps_netload_total =
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(1L << GLIBTOP_NETLOAD_PACKETS_TOTAL) +
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(1L << GLIBTOP_NETLOAD_BYTES_TOTAL);
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static const unsigned long _glibtop_sysdeps_netload_in =
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(1L << GLIBTOP_NETLOAD_PACKETS_TOTAL) +
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(1L << GLIBTOP_NETLOAD_BYTES_TOTAL) +
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(1L << GLIBTOP_NETLOAD_PACKETS_IN) +
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(1L << GLIBTOP_NETLOAD_BYTES_IN);
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static const unsigned long _glibtop_sysdeps_netload_out =
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(1L << GLIBTOP_NETLOAD_PACKETS_TOTAL) +
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(1L << GLIBTOP_NETLOAD_BYTES_TOTAL) +
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(1L << GLIBTOP_NETLOAD_PACKETS_OUT) +
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(1L << GLIBTOP_NETLOAD_BYTES_OUT);
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/* Init function. */
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int
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glibtop_init_netload_s (glibtop *server)
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{
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server->sysdeps.netload = _glibtop_sysdeps_netload |
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_glibtop_sysdeps_netload_bytes |
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_glibtop_sysdeps_netload_packets;
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return 0;
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}
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/* Provides network statistics. */
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int
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glibtop_get_netload_s (glibtop *server, glibtop_netload *buf,
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const char *interface, unsigned transport,
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unsigned protocol)
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{
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char buffer [BUFSIZ], *p;
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int have_bytes, fields;
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FILE *f;
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memset (buf, 0, sizeof (glibtop_netload));
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/* Linux 2.1.114 - don't know where exactly this was added, but
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* recent kernels have byte count in /proc/net/dev so we don't
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* need IP accounting.
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*/
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if (server->os_version_code < 131442) {
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/* If IP accounting is enabled in the kernel and it is
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* enabled for the requested interface, we use it to
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* get the data. In this case, we don't use /proc/net/dev
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* to get errors and collisions.
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*/
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f = fopen ("/proc/net/ip_acct", "r");
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if (f) {
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int success = 0;
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/* Skip over the header line. */
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fgets (buffer, BUFSIZ-1, f);
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while (fgets (buffer, BUFSIZ-1, f)) {
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unsigned long flags, packets, bytes;
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char *p, *dev;
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/* Skip over the network thing. */
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dev = skip_token (buffer) + 1;
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p = skip_token (dev);
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*p++ = 0;
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if (strcmp (dev, interface))
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continue;
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success = 1;
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p = skip_token (p);
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flags = strtoul (p, &p, 16);
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p = skip_multiple_token (p, 2);
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packets = strtoul (p, &p, 0);
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bytes = strtoul (p, &p, 0);
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if (flags & _GLIBTOP_IP_FW_ACCTIN) {
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/* Incoming packets only. */
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buf->packets_total += packets;
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buf->packets_in += packets;
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buf->bytes_total += bytes;
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buf->bytes_in += bytes;
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buf->flags |= _glibtop_sysdeps_netload_in;
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} else if (flags & _GLIBTOP_IP_FW_ACCTOUT) {
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/* Outgoing packets only. */
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buf->packets_total += packets;
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buf->packets_out += packets;
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buf->bytes_total += bytes;
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buf->bytes_out += bytes;
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buf->flags |= _glibtop_sysdeps_netload_out;
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} else {
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/* Only have total values. */
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buf->packets_total += packets;
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buf->bytes_total += bytes;
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buf->flags |= _glibtop_sysdeps_netload_total;
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}
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}
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fclose (f);
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if (success) return 0;
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}
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}
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/* Ok, either IP accounting is not enabled in the kernel or
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* it was not enabled for the requested interface. */
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f = fopen ("/proc/net/dev", "r");
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if (!f) return -1;
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/* Skip over the header line. */
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fgets (buffer, BUFSIZ-1, f);
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fgets (buffer, BUFSIZ-1, f);
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/* Starting with 2.1.xx (don't know exactly which version)
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* /proc/net/dev contains both byte and package counters. */
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p = strchr (buffer, '|');
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if (!p) {
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fclose (f);
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return -1;
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}
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/* Do we already have byte counters ? */
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have_bytes = strncmp (++p, "bytes", 5) == 0;
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/* Count remaining 'Receive' fields so we know where
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* the first 'Transmit' field starts. */
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fields = 0;
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while (*p != '|') {
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if (!isspace (*p++)) continue;
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while (isspace (*p++)) ;
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fields++;
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}
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/* Should never happen. */
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if (fields < 2) return -1;
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fields--;
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while (fgets (buffer, BUFSIZ-1, f)) {
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char *p, *dev;
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dev = buffer;
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while (isspace (*dev)) dev++;
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p = strchr (dev, ':');
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if (!p) continue;
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*p++ = 0;
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/* If it's not a digit, then it's most likely an error
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* message like 'No statistics available'. */
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while (isspace (*p)) p++;
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if (!isdigit (*p)) continue;
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if (strcmp (dev, interface))
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continue;
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/* Only read byte counts if we really have them. */
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if (have_bytes) {
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buf->bytes_in = strtoul (p, &p, 0);
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fields--;
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}
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buf->packets_in = strtoul (p, &p, 0);
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buf->errors_in = strtoul (p, &p, 0);
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p = skip_multiple_token (p, fields);
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if (have_bytes)
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buf->bytes_out = strtoul (p, &p, 0);
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buf->packets_out = strtoul (p, &p, 0);
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buf->errors_out = strtoul (p, &p, 0);
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p = skip_multiple_token (p, 2);
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buf->collisions = strtoul (p, &p, 0);
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/* Compute total valules. */
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buf->bytes_total = buf->bytes_in + buf->bytes_out;
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buf->packets_total = buf->packets_in + buf->packets_out;
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/* And now the flags. */
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buf->flags |= _glibtop_sysdeps_netload;
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buf->flags |= _glibtop_sysdeps_netload_packets;
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if (have_bytes)
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buf->flags |= _glibtop_sysdeps_netload_bytes;
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}
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fclose (f);
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return 0;
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}
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