diff options
author | John W. Linville <linville@tuxdriver.com> | 2010-05-17 17:57:43 (GMT) |
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committer | John W. Linville <linville@tuxdriver.com> | 2010-05-17 17:57:43 (GMT) |
commit | 6fe70aae0d128339febfabc073ba4c4a03de4f45 (patch) | |
tree | 711dff90df5ca4e07b5bddf11b2819e5cf2b7a93 /net/mac80211 | |
parent | 278554bd6579206921f5d8a523649a7a57f8850d (diff) | |
parent | 0c348d7c1422d59a86d6fb37b53d75788043e50b (diff) | |
download | linux-6fe70aae0d128339febfabc073ba4c4a03de4f45.tar.xz |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Diffstat (limited to 'net/mac80211')
-rw-r--r-- | net/mac80211/driver-ops.h | 11 | ||||
-rw-r--r-- | net/mac80211/driver-trace.h | 49 | ||||
-rw-r--r-- | net/mac80211/ieee80211_i.h | 3 | ||||
-rw-r--r-- | net/mac80211/mlme.c | 59 | ||||
-rw-r--r-- | net/mac80211/rx.c | 6 | ||||
-rw-r--r-- | net/mac80211/work.c | 27 |
6 files changed, 147 insertions, 8 deletions
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index ee8b63f..4f22713 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -371,4 +371,15 @@ static inline void drv_flush(struct ieee80211_local *local, bool drop) if (local->ops->flush) local->ops->flush(&local->hw, drop); } + +static inline void drv_channel_switch(struct ieee80211_local *local, + struct ieee80211_channel_switch *ch_switch) +{ + might_sleep(); + + local->ops->channel_switch(&local->hw, ch_switch); + + trace_drv_channel_switch(local, ch_switch); +} + #endif /* __MAC80211_DRIVER_OPS */ diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h index ce734b5..6a9b234 100644 --- a/net/mac80211/driver-trace.h +++ b/net/mac80211/driver-trace.h @@ -774,6 +774,34 @@ TRACE_EVENT(drv_flush, ) ); +TRACE_EVENT(drv_channel_switch, + TP_PROTO(struct ieee80211_local *local, + struct ieee80211_channel_switch *ch_switch), + + TP_ARGS(local, ch_switch), + + TP_STRUCT__entry( + LOCAL_ENTRY + __field(u64, timestamp) + __field(bool, block_tx) + __field(u16, freq) + __field(u8, count) + ), + + TP_fast_assign( + LOCAL_ASSIGN; + __entry->timestamp = ch_switch->timestamp; + __entry->block_tx = ch_switch->block_tx; + __entry->freq = ch_switch->channel->center_freq; + __entry->count = ch_switch->count; + ), + + TP_printk( + LOCAL_PR_FMT " new freq:%u count:%d", + LOCAL_PR_ARG, __entry->freq, __entry->count + ) +); + /* * Tracing for API calls that drivers call. */ @@ -992,6 +1020,27 @@ TRACE_EVENT(api_sta_block_awake, ) ); +TRACE_EVENT(api_chswitch_done, + TP_PROTO(struct ieee80211_sub_if_data *sdata, bool success), + + TP_ARGS(sdata, success), + + TP_STRUCT__entry( + VIF_ENTRY + __field(bool, success) + ), + + TP_fast_assign( + VIF_ASSIGN; + __entry->success = success; + ), + + TP_printk( + VIF_PR_FMT " success=%d", + VIF_PR_ARG, __entry->success + ) +); + /* * Tracing for internal functions * (which may also be called in response to driver calls) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 7ef7798..1a9e2da 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -998,7 +998,8 @@ int ieee80211_max_network_latency(struct notifier_block *nb, unsigned long data, void *dummy); void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, struct ieee80211_channel_sw_ie *sw_elem, - struct ieee80211_bss *bss); + struct ieee80211_bss *bss, + u64 timestamp); void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata); void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 3093e46..c6c1f49 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -342,7 +342,11 @@ static void ieee80211_chswitch_work(struct work_struct *work) goto out; sdata->local->oper_channel = sdata->local->csa_channel; - ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL); + if (!sdata->local->ops->channel_switch) { + /* call "hw_config" only if doing sw channel switch */ + ieee80211_hw_config(sdata->local, + IEEE80211_CONF_CHANGE_CHANNEL); + } /* XXX: shouldn't really modify cfg80211-owned data! */ ifmgd->associated->channel = sdata->local->oper_channel; @@ -354,6 +358,29 @@ static void ieee80211_chswitch_work(struct work_struct *work) mutex_unlock(&ifmgd->mtx); } +void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) +{ + struct ieee80211_sub_if_data *sdata; + struct ieee80211_if_managed *ifmgd; + + sdata = vif_to_sdata(vif); + ifmgd = &sdata->u.mgd; + + trace_api_chswitch_done(sdata, success); + if (!success) { + /* + * If the channel switch was not successful, stay + * around on the old channel. We currently lack + * good handling of this situation, possibly we + * should just drop the association. + */ + sdata->local->csa_channel = sdata->local->oper_channel; + } + + ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); +} +EXPORT_SYMBOL(ieee80211_chswitch_done); + static void ieee80211_chswitch_timer(unsigned long data) { struct ieee80211_sub_if_data *sdata = @@ -370,7 +397,8 @@ static void ieee80211_chswitch_timer(unsigned long data) void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, struct ieee80211_channel_sw_ie *sw_elem, - struct ieee80211_bss *bss) + struct ieee80211_bss *bss, + u64 timestamp) { struct cfg80211_bss *cbss = container_of((void *)bss, struct cfg80211_bss, priv); @@ -398,10 +426,29 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, sdata->local->csa_channel = new_ch; + if (sdata->local->ops->channel_switch) { + /* use driver's channel switch callback */ + struct ieee80211_channel_switch ch_switch; + memset(&ch_switch, 0, sizeof(ch_switch)); + ch_switch.timestamp = timestamp; + if (sw_elem->mode) { + ch_switch.block_tx = true; + ieee80211_stop_queues_by_reason(&sdata->local->hw, + IEEE80211_QUEUE_STOP_REASON_CSA); + } + ch_switch.channel = new_ch; + ch_switch.count = sw_elem->count; + ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; + drv_channel_switch(sdata->local, &ch_switch); + return; + } + + /* channel switch handled in software */ if (sw_elem->count <= 1) { ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); } else { - ieee80211_stop_queues_by_reason(&sdata->local->hw, + if (sw_elem->mode) + ieee80211_stop_queues_by_reason(&sdata->local->hw, IEEE80211_QUEUE_STOP_REASON_CSA); ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; mod_timer(&ifmgd->chswitch_timer, @@ -1317,7 +1364,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, ETH_ALEN) == 0)) { struct ieee80211_channel_sw_ie *sw_elem = (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; - ieee80211_sta_process_chanswitch(sdata, sw_elem, bss); + ieee80211_sta_process_chanswitch(sdata, sw_elem, + bss, rx_status->mactime); } } @@ -1649,7 +1697,8 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, ieee80211_sta_process_chanswitch(sdata, &mgmt->u.action.u.chan_switch.sw_elem, - (void *)ifmgd->associated->priv); + (void *)ifmgd->associated->priv, + rx_status->mactime); break; } mutex_unlock(&ifmgd->mtx); diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 9a08f2c..6e2a7bc 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1253,6 +1253,12 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) if (skb_linearize(rx->skb)) return RX_DROP_UNUSABLE; + /* + * skb_linearize() might change the skb->data and + * previously cached variables (in this case, hdr) need to + * be refreshed with the new data. + */ + hdr = (struct ieee80211_hdr *)rx->skb->data; seq = (sc & IEEE80211_SCTL_SEQ) >> 4; if (frag == 0) { diff --git a/net/mac80211/work.c b/net/mac80211/work.c index 3dd0760..be3d4a69 100644 --- a/net/mac80211/work.c +++ b/net/mac80211/work.c @@ -33,6 +33,7 @@ #define IEEE80211_MAX_PROBE_TRIES 5 enum work_action { + WORK_ACT_MISMATCH, WORK_ACT_NONE, WORK_ACT_TIMEOUT, WORK_ACT_DONE, @@ -585,7 +586,7 @@ ieee80211_rx_mgmt_auth(struct ieee80211_work *wk, u16 auth_alg, auth_transaction, status_code; if (wk->type != IEEE80211_WORK_AUTH) - return WORK_ACT_NONE; + return WORK_ACT_MISMATCH; if (len < 24 + 6) return WORK_ACT_NONE; @@ -636,6 +637,9 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_work *wk, struct ieee802_11_elems elems; u8 *pos; + if (wk->type != IEEE80211_WORK_ASSOC) + return WORK_ACT_MISMATCH; + /* * AssocResp and ReassocResp have identical structure, so process both * of them in this function. @@ -691,6 +695,12 @@ ieee80211_rx_mgmt_probe_resp(struct ieee80211_work *wk, ASSERT_WORK_MTX(local); + if (wk->type != IEEE80211_WORK_DIRECT_PROBE) + return WORK_ACT_MISMATCH; + + if (len < 24 + 12) + return WORK_ACT_NONE; + baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; if (baselen > len) return WORK_ACT_NONE; @@ -705,7 +715,7 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local, struct ieee80211_rx_status *rx_status; struct ieee80211_mgmt *mgmt; struct ieee80211_work *wk; - enum work_action rma = WORK_ACT_NONE; + enum work_action rma; u16 fc; rx_status = (struct ieee80211_rx_status *) skb->cb; @@ -752,7 +762,17 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local, break; default: WARN_ON(1); + rma = WORK_ACT_NONE; } + + /* + * We've either received an unexpected frame, or we have + * multiple work items and need to match the frame to the + * right one. + */ + if (rma == WORK_ACT_MISMATCH) + continue; + /* * We've processed this frame for that work, so it can't * belong to another work struct. @@ -762,6 +782,9 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local, } switch (rma) { + case WORK_ACT_MISMATCH: + /* ignore this unmatched frame */ + break; case WORK_ACT_NONE: break; case WORK_ACT_DONE: |