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athdebug.c

/*-
 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGES.
 *
 * $Id: athdebug.c 1849 2006-12-08 17:20:08Z proski $
 */

/*
 * athdebug [-i interface] flags
 * (default interface is wifi0).
 */
#include <sys/types.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/socket.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <getopt.h>
#include <err.h>

#define     N(a)  (sizeof(a)/sizeof(a[0]))

const char *progname;

enum {
      ATH_DEBUG_XMIT          = 0x00000001,     /* basic xmit operation */
      ATH_DEBUG_XMIT_DESC     = 0x00000002,     /* xmit descriptors */
      ATH_DEBUG_RECV          = 0x00000004,     /* basic recv operation */
      ATH_DEBUG_RECV_DESC     = 0x00000008,     /* recv descriptors */
      ATH_DEBUG_RATE          = 0x00000010,     /* rate control */
      ATH_DEBUG_RESET         = 0x00000020,     /* reset processing */
      ATH_DEBUG_MODE          = 0x00000040,     /* mode init/setup */
      ATH_DEBUG_BEACON  = 0x00000080,     /* beacon handling */
      ATH_DEBUG_WATCHDOG      = 0x00000100,     /* watchdog timeout */
      ATH_DEBUG_INTR          = 0x00001000,     /* ISR */
      ATH_DEBUG_TX_PROC = 0x00002000,     /* tx ISR proc */
      ATH_DEBUG_RX_PROC = 0x00004000,     /* rx ISR proc */
      ATH_DEBUG_BEACON_PROC   = 0x00008000,     /* beacon ISR proc */
      ATH_DEBUG_CALIBRATE     = 0x00010000,     /* periodic calibration */
      ATH_DEBUG_KEYCACHE      = 0x00020000,     /* key cache management */
      ATH_DEBUG_STATE         = 0x00040000,     /* 802.11 state transitions */
      ATH_DEBUG_NODE          = 0x00080000,     /* node management */
      ATH_DEBUG_LED           = 0x00100000,     /* led management */
      ATH_DEBUG_FF            = 0x00200000,     /* fast frames */
      ATH_DEBUG_TURBO         = 0x00400000,     /* turbo/dynamic turbo */
      ATH_DEBUG_UAPSD         = 0x00800000,     /* uapsd */
      ATH_DEBUG_DOTH          = 0x01000000,     /* 11.h */
      ATH_DEBUG_FATAL         = 0x80000000,     /* fatal errors */
      ATH_DEBUG_ANY           = 0xffffffff
};

static struct {
      const char *name;
      u_int bit;
      const char *desc;
} flags[] = {
      { "xmit",   ATH_DEBUG_XMIT, "transmission of packets before out to HW"},
      { "xmit_desc",    ATH_DEBUG_XMIT_DESC, "transmit descriptors" },
      { "recv",   ATH_DEBUG_RECV, "received packets directly from HW" },
      { "recv_desc",    ATH_DEBUG_RECV_DESC, "recv descriptors" },
      { "rate",   ATH_DEBUG_RATE, "rate control modules" },
      { "reset",  ATH_DEBUG_RESET, "reset processing and initialization" },
      { "mode",   ATH_DEBUG_MODE, "mode initialization and changes" },
      { "beacon", ATH_DEBUG_BEACON, "beacon handling" },
      { "watchdog",     ATH_DEBUG_WATCHDOG, "watchdog timer" },
      { "intr",   ATH_DEBUG_INTR, "interrupt processing" },
      { "xmit_proc",    ATH_DEBUG_TX_PROC, "processing of transmit descriptors" },
      { "recv_proc",    ATH_DEBUG_RX_PROC, "processing of receive descriptors" },
      { "beacon_proc",ATH_DEBUG_BEACON_PROC, "beacon processing" },
      { "calibrate",    ATH_DEBUG_CALIBRATE, "periodic re-calibration" },
      { "keycache",     ATH_DEBUG_KEYCACHE, "key cache management" },
      { "state",  ATH_DEBUG_STATE, "802.11 state transitions" },
      { "node",   ATH_DEBUG_NODE, "node management" },
      { "led",        ATH_DEBUG_LED, "led management" },
      { "ff",           ATH_DEBUG_FF, "fast frame handling" },
      { "turbo",  ATH_DEBUG_TURBO, "dynamic turbo handling" },
      { "uapsd",  ATH_DEBUG_UAPSD, "WME/UAPSD handling" },
      { "doth",   ATH_DEBUG_DOTH, "802.11h handling" },
      { "fatal",  ATH_DEBUG_FATAL, "fatal errors" },
};

static u_int
getflag(const char *name, int len)
{
      int i;

      for (i = 0; i < N(flags); i++)
            if (strncasecmp(flags[i].name, name, len) == 0)
                  return flags[i].bit;
      return 0;
}

static void
usage(void)
{
      int i;

      fprintf(stderr, "usage: %s [-i device] [(+/-) flags]\n", progname);
      fprintf(stderr, "\twhere flags are:\n\n");
      for (i = 0; i < N(flags); i++)
            printf("\t%12s\t0x%08x\t%s\n", flags[i].name, flags[i].bit, flags[i].desc);
      exit(-1);
}

#ifdef __linux__
static int
sysctlbyname(const char *oid0, void *oldp, size_t *oldlenp, void *newp,
      size_t newlen)
{
      char oidcopy[1024], *oid;
      char path[1024];
      FILE *fd;

      strncpy(oidcopy, oid0, sizeof(oidcopy));
      oid = oidcopy;
      strcpy(path, "/proc/sys");
      do {
            char *cp, *tp;

            for (cp = oid; *cp != '\0' && *cp != '.'; cp++);
            if (*cp == '.')
                  *cp++ = '\0';
            tp = strchr(path, '\0');
            snprintf(tp, sizeof(path) - (tp-path), "/%s", oid);
            oid = cp;
      } while (*oid != '\0');
      if (oldp != NULL) {
            fd = fopen(path, "r");
            if (fd == NULL)
                  return -1;
            /* XXX only handle int's */
            if (fscanf(fd, "%u", (int *) oldp) != 1) {
                  fclose(fd);
                  return -1;
            }
      } else {
            fd = fopen(path, "w");
            if (fd == NULL)
                  return -1;
            /* XXX only handle int's */
            (void) fprintf(fd, "%u", *(int *)newp);
      }
      fclose(fd);
      return 0;
}
#endif /* __linux__ */

int
main(int argc, char *argv[])
{
#ifdef __linux__
      const char *ifname = "wifi0";
#else
      const char *ifname = "ath0";
#endif
      const char *cp, *tp;
      const char *sep;
      int op, i;
      u_int32_t debug, ndebug;
      size_t debuglen;
      char oid[256];

      progname = argv[0];
      if (argc > 1) {
            if (strcmp(argv[1], "-i") == 0) {
                  if (argc < 2)
                        errx(1, "missing interface name for -i option");
                  ifname = argv[2];
                  argc -= 2;
                  argv += 2;
            } else if (strcmp(argv[1], "-?") == 0)
                  usage();
      }

#ifdef __linux__
      snprintf(oid, sizeof(oid), "dev.%s.debug", ifname);
#else
      snprintf(oid, sizeof(oid), "dev.ath.%s.debug", ifname+3);
#endif
      debuglen = sizeof(debug);
      if (sysctlbyname(oid, &debug, &debuglen, NULL, 0) < 0)
            err(1, "sysctl-get(%s)", oid);
      ndebug = debug;
      for (; argc > 1; argc--, argv++) {
            cp = argv[1];
            do {
                  u_int bit;

                  if (*cp == '-') {
                        cp++;
                        op = -1;
                  } else if (*cp == '+') {
                        cp++;
                        op = 1;
                  } else
                        op = 0;
                  for (tp = cp; *tp != '\0' && *tp != '+' && *tp != '-';)
                        tp++;
                  bit = getflag(cp, tp-cp);
                  if (op < 0)
                        ndebug &= ~bit;
                  else if (op > 0)
                        ndebug |= bit;
                  else {
                        if (bit == 0) {
                              if (isdigit(*cp))
                                    bit = strtoul(cp, NULL, 0);
                              else
                                    errx(1, "unknown flag %.*s",
                                          (int)(tp-cp), cp);
                        }
                        ndebug = bit;
                  }
            } while (*(cp = tp) != '\0');
      }
      if (debug != ndebug) {
            printf("%s: 0x%08x => ", oid, debug);
            if (sysctlbyname(oid, NULL, NULL, &ndebug, sizeof(ndebug)) < 0)
                  err(1, "sysctl-set(%s)", oid);
            printf("0x%08x", ndebug);
            debug = ndebug;
      } else
            printf("%s: 0x%08x", oid, debug);
      sep = "<";
      for (i = 0; i < N(flags); i++)
            if (debug & flags[i].bit) {
                  printf("%s%s", sep, flags[i].name);
                  sep = ",";
            }
      printf("%s\n", *sep != '<' ? ">" : "");
      return 0;
}

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