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34e895075e
linux/net/mac80211/driver-trace.h
Johannes Berg 34e895075e mac80211: allow station add/remove to sleep 
Many drivers would like to sleep during station
addition and removal, and currently have a high
complexity there from not being able to.

This introduces two new callbacks sta_add() and
sta_remove() that drivers can implement instead
of using sta_notify() and that can sleep, and
the new sta_add() callback is also allowed to
fail.

The reason we didn't do this previously is that
the IBSS code wants to insert stations from the
RX path, which is a tasklet, so cannot sleep.
This patch will keep the station allocation in
that path, but moves adding the station to the
driver out of line. Since the addition can now
fail, we can have IBSS peer structs the driver
rejected -- in that case we still talk to the
station but never tell the driver about it in
the control.sta pointer. If there will ever be
a driver that has a low limit on the number of
stations and that cannot talk to any stations
that are not known to it, we need to do come up
with a new strategy of handling larger IBSSs,
maybe quicker expiry or rejecting peers.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-02-08 16:50:53 -05:00

799 lines
15 KiB
C
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#if !defined(__MAC80211_DRIVER_TRACE) || defined(TRACE_HEADER_MULTI_READ)
#define __MAC80211_DRIVER_TRACE
#include <linux/tracepoint.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#if !defined(CONFIG_MAC80211_DRIVER_API_TRACER) || defined(__CHECKER__)
#undef TRACE_EVENT
#define TRACE_EVENT(name, proto, ...) \
static inline void trace_ ## name(proto) {}
#endif
#undef TRACE_SYSTEM
#define TRACE_SYSTEM mac80211
#define MAXNAME 32
#define LOCAL_ENTRY __array(char, wiphy_name, 32)
#define LOCAL_ASSIGN strlcpy(__entry->wiphy_name, wiphy_name(local->hw.wiphy), MAXNAME)
#define LOCAL_PR_FMT "%s"
#define LOCAL_PR_ARG __entry->wiphy_name
#define STA_ENTRY __array(char, sta_addr, ETH_ALEN)
#define STA_ASSIGN (sta ? memcpy(__entry->sta_addr, sta->addr, ETH_ALEN) : memset(__entry->sta_addr, 0, ETH_ALEN))
#define STA_PR_FMT " sta:%pM"
#define STA_PR_ARG __entry->sta_addr
#define VIF_ENTRY __field(enum nl80211_iftype, vif_type) __field(void *, sdata) \
__string(vif_name, sdata->dev ? sdata->dev->name : "<nodev>")
#define VIF_ASSIGN __entry->vif_type = sdata->vif.type; __entry->sdata = sdata; \
__assign_str(vif_name, sdata->dev ? sdata->dev->name : "<nodev>")
#define VIF_PR_FMT " vif:%s(%d)"
#define VIF_PR_ARG __get_str(vif_name), __entry->vif_type
TRACE_EVENT(drv_start,
TP_PROTO(struct ieee80211_local *local, int ret),
TP_ARGS(local, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT, LOCAL_PR_ARG
)
);
TRACE_EVENT(drv_stop,
TP_PROTO(struct ieee80211_local *local),
TP_ARGS(local),
TP_STRUCT__entry(
LOCAL_ENTRY
),
TP_fast_assign(
LOCAL_ASSIGN;
),
TP_printk(
LOCAL_PR_FMT, LOCAL_PR_ARG
)
);
TRACE_EVENT(drv_add_interface,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
int ret),
TP_ARGS(local, sdata, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
VIF_ENTRY
__array(char, addr, 6)
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
memcpy(__entry->addr, sdata->vif.addr, 6);
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT VIF_PR_FMT " addr:%pM ret:%d",
LOCAL_PR_ARG, VIF_PR_ARG, __entry->addr, __entry->ret
)
);
TRACE_EVENT(drv_remove_interface,
TP_PROTO(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata),
TP_ARGS(local, sdata),
TP_STRUCT__entry(
LOCAL_ENTRY
VIF_ENTRY
__array(char, addr, 6)
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
memcpy(__entry->addr, sdata->vif.addr, 6);
),
TP_printk(
LOCAL_PR_FMT VIF_PR_FMT " addr:%pM",
LOCAL_PR_ARG, VIF_PR_ARG, __entry->addr
)
);
TRACE_EVENT(drv_config,
TP_PROTO(struct ieee80211_local *local,
u32 changed,
int ret),
TP_ARGS(local, changed, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(u32, changed)
__field(int, ret)
__field(u32, flags)
__field(int, power_level)
__field(int, dynamic_ps_timeout)
__field(int, max_sleep_period)
__field(u16, listen_interval)
__field(u8, long_frame_max_tx_count)
__field(u8, short_frame_max_tx_count)
__field(int, center_freq)
__field(int, channel_type)
__field(int, smps)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->changed = changed;
__entry->ret = ret;
__entry->flags = local->hw.conf.flags;
__entry->power_level = local->hw.conf.power_level;
__entry->dynamic_ps_timeout = local->hw.conf.dynamic_ps_timeout;
__entry->max_sleep_period = local->hw.conf.max_sleep_period;
__entry->listen_interval = local->hw.conf.listen_interval;
__entry->long_frame_max_tx_count = local->hw.conf.long_frame_max_tx_count;
__entry->short_frame_max_tx_count = local->hw.conf.short_frame_max_tx_count;
__entry->center_freq = local->hw.conf.channel->center_freq;
__entry->channel_type = local->hw.conf.channel_type;
__entry->smps = local->hw.conf.smps_mode;
),
TP_printk(
LOCAL_PR_FMT " ch:%#x freq:%d ret:%d",
LOCAL_PR_ARG, __entry->changed, __entry->center_freq, __entry->ret
)
);
TRACE_EVENT(drv_bss_info_changed,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_bss_conf *info,
u32 changed),
TP_ARGS(local, sdata, info, changed),
TP_STRUCT__entry(
LOCAL_ENTRY
VIF_ENTRY
__field(bool, assoc)
__field(u16, aid)
__field(bool, cts)
__field(bool, shortpre)
__field(bool, shortslot)
__field(u8, dtimper)
__field(u16, bcnint)
__field(u16, assoc_cap)
__field(u64, timestamp)
__field(u32, basic_rates)
__field(u32, changed)
__field(bool, enable_beacon)
__field(u16, ht_operation_mode)
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
__entry->changed = changed;
__entry->aid = info->aid;
__entry->assoc = info->assoc;
__entry->shortpre = info->use_short_preamble;
__entry->cts = info->use_cts_prot;
__entry->shortslot = info->use_short_slot;
__entry->dtimper = info->dtim_period;
__entry->bcnint = info->beacon_int;
__entry->assoc_cap = info->assoc_capability;
__entry->timestamp = info->timestamp;
__entry->basic_rates = info->basic_rates;
__entry->enable_beacon = info->enable_beacon;
__entry->ht_operation_mode = info->ht_operation_mode;
),
TP_printk(
LOCAL_PR_FMT VIF_PR_FMT " changed:%#x",
LOCAL_PR_ARG, VIF_PR_ARG, __entry->changed
)
);
TRACE_EVENT(drv_prepare_multicast,
TP_PROTO(struct ieee80211_local *local, int mc_count, u64 ret),
TP_ARGS(local, mc_count, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(int, mc_count)
__field(u64, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->mc_count = mc_count;
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT " prepare mc (%d): %llx",
LOCAL_PR_ARG, __entry->mc_count,
(unsigned long long) __entry->ret
)
);
TRACE_EVENT(drv_configure_filter,
TP_PROTO(struct ieee80211_local *local,
unsigned int changed_flags,
unsigned int *total_flags,
u64 multicast),
TP_ARGS(local, changed_flags, total_flags, multicast),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(unsigned int, changed)
__field(unsigned int, total)
__field(u64, multicast)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->changed = changed_flags;
__entry->total = *total_flags;
__entry->multicast = multicast;
),
TP_printk(
LOCAL_PR_FMT " changed:%#x total:%#x",
LOCAL_PR_ARG, __entry->changed, __entry->total
)
);
TRACE_EVENT(drv_set_tim,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sta *sta, bool set, int ret),
TP_ARGS(local, sta, set, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
STA_ENTRY
__field(bool, set)
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
STA_ASSIGN;
__entry->set = set;
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT STA_PR_FMT " set:%d ret:%d",
LOCAL_PR_ARG, STA_PR_FMT, __entry->set, __entry->ret
)
);
TRACE_EVENT(drv_set_key,
TP_PROTO(struct ieee80211_local *local,
enum set_key_cmd cmd, struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key, int ret),
TP_ARGS(local, cmd, sdata, sta, key, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
VIF_ENTRY
STA_ENTRY
__field(enum ieee80211_key_alg, alg)
__field(u8, hw_key_idx)
__field(u8, flags)
__field(s8, keyidx)
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
STA_ASSIGN;
__entry->alg = key->alg;
__entry->flags = key->flags;
__entry->keyidx = key->keyidx;
__entry->hw_key_idx = key->hw_key_idx;
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT " ret:%d",
LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG, __entry->ret
)
);
TRACE_EVENT(drv_update_tkip_key,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_key_conf *conf,
struct ieee80211_sta *sta, u32 iv32),
TP_ARGS(local, sdata, conf, sta, iv32),
TP_STRUCT__entry(
LOCAL_ENTRY
VIF_ENTRY
STA_ENTRY
__field(u32, iv32)
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
STA_ASSIGN;
__entry->iv32 = iv32;
),
TP_printk(
LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT " iv32:%#x",
LOCAL_PR_ARG,VIF_PR_ARG,STA_PR_ARG, __entry->iv32
)
);
TRACE_EVENT(drv_hw_scan,
TP_PROTO(struct ieee80211_local *local,
struct cfg80211_scan_request *req, int ret),
TP_ARGS(local, req, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT " ret:%d",
LOCAL_PR_ARG, __entry->ret
)
);
TRACE_EVENT(drv_sw_scan_start,
TP_PROTO(struct ieee80211_local *local),
TP_ARGS(local),
TP_STRUCT__entry(
LOCAL_ENTRY
),
TP_fast_assign(
LOCAL_ASSIGN;
),
TP_printk(
LOCAL_PR_FMT, LOCAL_PR_ARG
)
);
TRACE_EVENT(drv_sw_scan_complete,
TP_PROTO(struct ieee80211_local *local),
TP_ARGS(local),
TP_STRUCT__entry(
LOCAL_ENTRY
),
TP_fast_assign(
LOCAL_ASSIGN;
),
TP_printk(
LOCAL_PR_FMT, LOCAL_PR_ARG
)
);
TRACE_EVENT(drv_get_stats,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_low_level_stats *stats,
int ret),
TP_ARGS(local, stats, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(int, ret)
__field(unsigned int, ackfail)
__field(unsigned int, rtsfail)
__field(unsigned int, fcserr)
__field(unsigned int, rtssucc)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->ret = ret;
__entry->ackfail = stats->dot11ACKFailureCount;
__entry->rtsfail = stats->dot11RTSFailureCount;
__entry->fcserr = stats->dot11FCSErrorCount;
__entry->rtssucc = stats->dot11RTSSuccessCount;
),
TP_printk(
LOCAL_PR_FMT " ret:%d",
LOCAL_PR_ARG, __entry->ret
)
);
TRACE_EVENT(drv_get_tkip_seq,
TP_PROTO(struct ieee80211_local *local,
u8 hw_key_idx, u32 *iv32, u16 *iv16),
TP_ARGS(local, hw_key_idx, iv32, iv16),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(u8, hw_key_idx)
__field(u32, iv32)
__field(u16, iv16)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->hw_key_idx = hw_key_idx;
__entry->iv32 = *iv32;
__entry->iv16 = *iv16;
),
TP_printk(
LOCAL_PR_FMT, LOCAL_PR_ARG
)
);
TRACE_EVENT(drv_set_rts_threshold,
TP_PROTO(struct ieee80211_local *local, u32 value, int ret),
TP_ARGS(local, value, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(u32, value)
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->ret = ret;
__entry->value = value;
),
TP_printk(
LOCAL_PR_FMT " value:%d ret:%d",
LOCAL_PR_ARG, __entry->value, __entry->ret
)
);
TRACE_EVENT(drv_set_coverage_class,
TP_PROTO(struct ieee80211_local *local, u8 value, int ret),
TP_ARGS(local, value, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(u8, value)
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->ret = ret;
__entry->value = value;
),
TP_printk(
LOCAL_PR_FMT " value:%d ret:%d",
LOCAL_PR_ARG, __entry->value, __entry->ret
)
);
TRACE_EVENT(drv_sta_notify,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
enum sta_notify_cmd cmd,
struct ieee80211_sta *sta),
TP_ARGS(local, sdata, cmd, sta),
TP_STRUCT__entry(
LOCAL_ENTRY
VIF_ENTRY
STA_ENTRY
__field(u32, cmd)
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
STA_ASSIGN;
__entry->cmd = cmd;
),
TP_printk(
LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT " cmd:%d",
LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG, __entry->cmd
)
);
TRACE_EVENT(drv_sta_add,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta, int ret),
TP_ARGS(local, sdata, sta, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
VIF_ENTRY
STA_ENTRY
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
STA_ASSIGN;
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT " ret:%d",
LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG, __entry->ret
)
);
TRACE_EVENT(drv_sta_remove,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta),
TP_ARGS(local, sdata, sta),
TP_STRUCT__entry(
LOCAL_ENTRY
VIF_ENTRY
STA_ENTRY
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
STA_ASSIGN;
),
TP_printk(
LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT,
LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG
)
);
TRACE_EVENT(drv_conf_tx,
TP_PROTO(struct ieee80211_local *local, u16 queue,
const struct ieee80211_tx_queue_params *params,
int ret),
TP_ARGS(local, queue, params, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(u16, queue)
__field(u16, txop)
__field(u16, cw_min)
__field(u16, cw_max)
__field(u8, aifs)
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->queue = queue;
__entry->ret = ret;
__entry->txop = params->txop;
__entry->cw_max = params->cw_max;
__entry->cw_min = params->cw_min;
__entry->aifs = params->aifs;
),
TP_printk(
LOCAL_PR_FMT " queue:%d ret:%d",
LOCAL_PR_ARG, __entry->queue, __entry->ret
)
);
TRACE_EVENT(drv_get_tx_stats,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_tx_queue_stats *stats,
int ret),
TP_ARGS(local, stats, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT " ret:%d",
LOCAL_PR_ARG, __entry->ret
)
);
TRACE_EVENT(drv_get_tsf,
TP_PROTO(struct ieee80211_local *local, u64 ret),
TP_ARGS(local, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(u64, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT " ret:%llu",
LOCAL_PR_ARG, (unsigned long long)__entry->ret
)
);
TRACE_EVENT(drv_set_tsf,
TP_PROTO(struct ieee80211_local *local, u64 tsf),
TP_ARGS(local, tsf),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(u64, tsf)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->tsf = tsf;
),
TP_printk(
LOCAL_PR_FMT " tsf:%llu",
LOCAL_PR_ARG, (unsigned long long)__entry->tsf
)
);
TRACE_EVENT(drv_reset_tsf,
TP_PROTO(struct ieee80211_local *local),
TP_ARGS(local),
TP_STRUCT__entry(
LOCAL_ENTRY
),
TP_fast_assign(
LOCAL_ASSIGN;
),
TP_printk(
LOCAL_PR_FMT, LOCAL_PR_ARG
)
);
TRACE_EVENT(drv_tx_last_beacon,
TP_PROTO(struct ieee80211_local *local, int ret),
TP_ARGS(local, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT " ret:%d",
LOCAL_PR_ARG, __entry->ret
)
);
TRACE_EVENT(drv_ampdu_action,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid,
u16 *ssn, int ret),
TP_ARGS(local, sdata, action, sta, tid, ssn, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
STA_ENTRY
__field(u32, action)
__field(u16, tid)
__field(u16, ssn)
__field(int, ret)
VIF_ENTRY
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
STA_ASSIGN;
__entry->ret = ret;
__entry->action = action;
__entry->tid = tid;
__entry->ssn = ssn ? *ssn : 0;
),
TP_printk(
LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT " action:%d tid:%d ret:%d",
LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG, __entry->action, __entry->tid, __entry->ret
)
);
TRACE_EVENT(drv_flush,
TP_PROTO(struct ieee80211_local *local, bool drop),
TP_ARGS(local, drop),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(bool, drop)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->drop = drop;
),
TP_printk(
LOCAL_PR_FMT " drop:%d",
LOCAL_PR_ARG, __entry->drop
)
);
#endif /* !__MAC80211_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE driver-trace
#include <trace/define_trace.h>
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