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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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8892384803
dev_base_lock was the legacy rwlock used to protect netdevice list, and is expected to vanish. We now use RTNL and RCU locking. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
136 lines
3.9 KiB
C
136 lines
3.9 KiB
C
/*
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* ex: sw=4
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*/
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/if_arp.h>
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#include <net/sock.h>
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#include <linux/rtnetlink.h>
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#include <linux/wireless.h>
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#include <net/iw_handler.h>
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#include <linux/sysfs.h>
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#include <debug.h>
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#include <hcf.h>
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#include <hcfdef.h>
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#include <wl_if.h>
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#include <wl_internal.h>
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#include <wl_util.h>
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#include <wl_main.h>
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#include <wl_wext.h>
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#include <wl_priv.h>
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static inline int dev_isalive(const struct net_device *dev)
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{
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return dev->reg_state == NETREG_REGISTERED;
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}
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/*
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* empirically even if tallies are defined as 32 bits entities, only
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* high 16 bits are relevant; low half is always zero. It means tallies
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* are pretty much useless for traffic counting but at least give overview
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* about where error come from
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*/
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static ssize_t show_tallies(struct device *d, struct device_attribute *attr,
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char *buf)
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{
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struct net_device *dev = to_net_dev(d);
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struct wl_private *lp = wl_priv(dev);
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unsigned long flags;
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CFG_HERMES_TALLIES_STRCT tallies;
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ssize_t ret = -EINVAL;
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rcu_read_lock();
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if (dev_isalive(dev)) {
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wl_lock(lp, &flags);
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ret = wl_get_tallies(lp, &tallies);
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if (ret == 0) {
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wl_unlock(lp, &flags);
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ret = snprintf(buf, PAGE_SIZE,
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"TxUnicastFrames: %u\n"
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"TxMulticastFrames: %u\n"
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"TxFragments: %u\n"
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"TxUnicastOctets: %u\n"
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"TxMulticastOctets: %u\n"
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"TxDeferredTransmissions: %u\n"
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"TxSingleRetryFrames: %u\n"
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"TxMultipleRetryFrames: %u\n"
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"TxRetryLimitExceeded: %u\n"
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"TxDiscards: %u\n"
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"RxUnicastFrames: %u\n"
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"RxMulticastFrames: %u\n"
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"RxFragments: %u\n"
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"RxUnicastOctets: %u\n"
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"RxMulticastOctets: %u\n"
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"RxFCSErrors: %u\n"
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"RxDiscardsNoBuffer: %u\n"
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"TxDiscardsWrongSA: %u\n"
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"RxWEPUndecryptable: %u\n"
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"RxMsgInMsgFragments: %u\n"
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"RxMsgInBadMsgFragments: %u\n"
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"RxDiscardsWEPICVError: %u\n"
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"RxDiscardsWEPExcluded: %u\n"
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,
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(unsigned int)tallies.TxUnicastFrames,
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(unsigned int)tallies.TxMulticastFrames,
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(unsigned int)tallies.TxFragments,
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(unsigned int)tallies.TxUnicastOctets,
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(unsigned int)tallies.TxMulticastOctets,
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(unsigned int)tallies.TxDeferredTransmissions,
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(unsigned int)tallies.TxSingleRetryFrames,
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(unsigned int)tallies.TxMultipleRetryFrames,
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(unsigned int)tallies.TxRetryLimitExceeded,
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(unsigned int)tallies.TxDiscards,
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(unsigned int)tallies.RxUnicastFrames,
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(unsigned int)tallies.RxMulticastFrames,
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(unsigned int)tallies.RxFragments,
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(unsigned int)tallies.RxUnicastOctets,
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(unsigned int)tallies.RxMulticastOctets,
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(unsigned int)tallies.RxFCSErrors,
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(unsigned int)tallies.RxDiscardsNoBuffer,
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(unsigned int)tallies.TxDiscardsWrongSA,
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(unsigned int)tallies.RxWEPUndecryptable,
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(unsigned int)tallies.RxMsgInMsgFragments,
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(unsigned int)tallies.RxMsgInBadMsgFragments,
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(unsigned int)tallies.RxDiscardsWEPICVError,
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(unsigned int)tallies.RxDiscardsWEPExcluded);
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} else {
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wl_unlock( lp, &flags );
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}
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}
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rcu_read_unlock();
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return ret;
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}
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static DEVICE_ATTR(tallies, S_IRUGO, show_tallies, NULL);
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static struct attribute *wlags_attrs[] = {
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&dev_attr_tallies.attr,
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NULL
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};
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static struct attribute_group wlags_group = {
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.name = "wlags",
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.attrs = wlags_attrs,
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};
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void register_wlags_sysfs(struct net_device *net)
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{
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struct device *dev = &(net->dev);
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struct wl_private *lp = wl_priv(net);
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lp->sysfsCreated = sysfs_create_group(&dev->kobj, &wlags_group);
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}
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void unregister_wlags_sysfs(struct net_device *net)
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{
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struct device *dev = &(net->dev);
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struct wl_private *lp = wl_priv(net);
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if (lp->sysfsCreated)
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sysfs_remove_group(&dev->kobj, &wlags_group);
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}
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