LXR linux/drivers/staging/wlags49_h2/wl

   1/*
   2 * ex: sw=4
   3 */
   4
   5#include <linux/kernel.h>
   6#include <linux/netdevice.h>
   7#include <linux/if_arp.h>
   8#include <net/sock.h>
   9#include <linux/rtnetlink.h>
  10#include <linux/wireless.h>
  11#include <net/iw_handler.h>
  12#include <linux/sysfs.h>
  13
  14#include <debug.h>
  15#include <hcf.h>
  16#include <hcfdef.h>
  17
  18#include <wl_if.h>
  19#include <wl_internal.h>
  20#include <wl_util.h>
  21#include <wl_main.h>
  22#include <wl_wext.h>
  23#include <wl_priv.h>
  24
  25static inline int dev_isalive(const struct net_device *dev)
  26{
  27            return dev->reg_state == NETREG_REGISTERED;
  28}
  29
  30/*
  31 * empirically even if tallies are defined as 32 bits entities, only
  32 * high 16 bits are relevant; low half is always zero. It means tallies
  33 * are pretty much useless for traffic counting but at least give overview
  34 * about where error come from
  35 */
  36static ssize_t show_tallies(struct device *d, struct device_attribute *attr,
  37                            char *buf)
  38{
  39    struct net_device *dev = to_net_dev(d);
  40    struct wl_private *lp = wl_priv(dev);
  41    unsigned long flags;
  42    CFG_HERMES_TALLIES_STRCT tallies;
  43    ssize_t ret = -EINVAL;
  44
  45    rcu_read_lock();
  46    if (dev_isalive(dev)) {
  47        wl_lock(lp, &flags);
  48
  49        ret = wl_get_tallies(lp, &tallies);
  50        if (ret == 0) {
  51                wl_unlock(lp, &flags);
  52                ret = snprintf(buf, PAGE_SIZE,
  53                    "TxUnicastFrames:           %u\n"
  54                    "TxMulticastFrames:         %u\n"
  55                    "TxFragments:               %u\n"
  56                    "TxUnicastOctets:           %u\n"
  57                    "TxMulticastOctets:         %u\n"
  58                    "TxDeferredTransmissions:   %u\n"
  59                    "TxSingleRetryFrames:       %u\n"
  60                    "TxMultipleRetryFrames:     %u\n"
  61                    "TxRetryLimitExceeded:      %u\n"
  62                    "TxDiscards:                %u\n"
  63                    "RxUnicastFrames:           %u\n"
  64                    "RxMulticastFrames:         %u\n"
  65                    "RxFragments:               %u\n"
  66                    "RxUnicastOctets:           %u\n"
  67                    "RxMulticastOctets:         %u\n"
  68                    "RxFCSErrors:               %u\n"
  69                    "RxDiscardsNoBuffer:        %u\n"
  70                    "TxDiscardsWrongSA:         %u\n"
  71                    "RxWEPUndecryptable:        %u\n"
  72                    "RxMsgInMsgFragments:       %u\n"
  73                    "RxMsgInBadMsgFragments:    %u\n"
  74                    "RxDiscardsWEPICVError:     %u\n"
  75                    "RxDiscardsWEPExcluded:     %u\n"
  76                    ,
  77                    (unsigned int)tallies.TxUnicastFrames,
  78                    (unsigned int)tallies.TxMulticastFrames,
  79                    (unsigned int)tallies.TxFragments,
  80                    (unsigned int)tallies.TxUnicastOctets,
  81                    (unsigned int)tallies.TxMulticastOctets,
  82                    (unsigned int)tallies.TxDeferredTransmissions,
  83                    (unsigned int)tallies.TxSingleRetryFrames,
  84                    (unsigned int)tallies.TxMultipleRetryFrames,
  85                    (unsigned int)tallies.TxRetryLimitExceeded,
  86                    (unsigned int)tallies.TxDiscards,
  87                    (unsigned int)tallies.RxUnicastFrames,
  88                    (unsigned int)tallies.RxMulticastFrames,
  89                    (unsigned int)tallies.RxFragments,
  90                    (unsigned int)tallies.RxUnicastOctets,
  91                    (unsigned int)tallies.RxMulticastOctets,
  92                    (unsigned int)tallies.RxFCSErrors,
  93                    (unsigned int)tallies.RxDiscardsNoBuffer,
  94                    (unsigned int)tallies.TxDiscardsWrongSA,
  95                    (unsigned int)tallies.RxWEPUndecryptable,
  96                    (unsigned int)tallies.RxMsgInMsgFragments,
  97                    (unsigned int)tallies.RxMsgInBadMsgFragments,
  98                    (unsigned int)tallies.RxDiscardsWEPICVError,
  99                    (unsigned int)tallies.RxDiscardsWEPExcluded);
 100            } else {
 101                wl_unlock( lp, &flags );
 102            }
 103    }
 104
 105    rcu_read_unlock();
 106    return ret;
 107}
 108
 109static DEVICE_ATTR(tallies, S_IRUGO, show_tallies, NULL);
 110
 111static struct attribute *wlags_attrs[] = {
 112    &dev_attr_tallies.attr,
 113    NULL
 114};
 115
 116static struct attribute_group wlags_group = {
 117    .name = "wlags",
 118    .attrs = wlags_attrs,
 119};
 120
 121void register_wlags_sysfs(struct net_device *net)
 122{
 123        struct device *dev = &(net->dev);
 124        struct wl_private *lp = wl_priv(net);
 125        int err;
 126        err = sysfs_create_group(&dev->kobj, &wlags_group);
 127        if (!err)
 128                lp->sysfsCreated = true;
 129}
 130
 131void unregister_wlags_sysfs(struct net_device *net)
 132{
 133        struct device *dev = &(net->dev);
 134        struct wl_private *lp = wl_priv(net);
 135
 136        if (lp->sysfsCreated)
 137                sysfs_remove_group(&dev->kobj, &wlags_group);
 138}
 139