/drivers/staging/wlags49_h2/wl_sysfs.c

  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
126    lp->sysfsCreated = sysfs_create_group(&dev->kobj, &wlags_group);
127}
128
129void unregister_wlags_sysfs(struct net_device *net)
130{
131    struct device *dev = &(net->dev);
132    struct wl_private *lp = wl_priv(net);
133
134    if (lp->sysfsCreated)
135	sysfs_remove_group(&dev->kobj, &wlags_group);
136}