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| author | Bob Copeland <me@bobcopeland.com> | 2011-01-24 23:32:55 -0500 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-01-28 15:44:27 -0500 |
| commit | 0e4722524d5134dedd514d34991f02f2c1de23b4 (patch) | |
| tree | 57815e9ba376d4b26cabde9b4ff4092b5b1217c4 /drivers/net/wireless/ath/ath5k/base.c | |
| parent | b453175d932c8ff42146992a1dac243104783902 (diff) | |
| download | lwn-0e4722524d5134dedd514d34991f02f2c1de23b4.tar.gz lwn-0e4722524d5134dedd514d34991f02f2c1de23b4.zip | |
ath5k: use tracing for packet tx/rx dump
This adds a few tracepoints to ath5k driver transmit and
receive callbacks in order to record packet traffic.
We record the entire packet in the trace buffer so that
the data can be extracted with trace-cmd and external
plugins.
Compared to the previous debugging calls, this approach
removes an out-of-line function call from the tx and rx
paths in the compiled-in-but-disabled case, while
improving the ability to process the logged data.
A new option, CONFIG_ATH5K_TRACER, is added so that one
may disable the tracepoints completely.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Acked-by: Bruno Randolf <br1@einfach.org>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/base.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/base.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c index 8611f24cdf6a..c0927d7b7c6b 100644 --- a/drivers/net/wireless/ath/ath5k/base.c +++ b/drivers/net/wireless/ath/ath5k/base.c @@ -61,6 +61,9 @@ #include "debug.h" #include "ani.h" +#define CREATE_TRACE_POINTS +#include "trace.h" + int ath5k_modparam_nohwcrypt; module_param_named(nohwcrypt, ath5k_modparam_nohwcrypt, bool, S_IRUGO); MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); @@ -1379,7 +1382,7 @@ ath5k_receive_frame(struct ath5k_softc *sc, struct sk_buff *skb, sc->sbands[sc->curchan->band].bitrates[rxs->rate_idx].hw_value_short) rxs->flag |= RX_FLAG_SHORTPRE; - ath5k_debug_dump_skb(sc, skb, "RX ", 0); + trace_ath5k_rx(sc, skb); ath5k_update_beacon_rssi(sc, skb, rs->rs_rssi); @@ -1524,7 +1527,7 @@ ath5k_tx_queue(struct ieee80211_hw *hw, struct sk_buff *skb, unsigned long flags; int padsize; - ath5k_debug_dump_skb(sc, skb, "TX ", 1); + trace_ath5k_tx(sc, skb, txq); /* * The hardware expects the header padded to 4 byte boundaries. @@ -1573,7 +1576,7 @@ drop_packet: static void ath5k_tx_frame_completed(struct ath5k_softc *sc, struct sk_buff *skb, - struct ath5k_tx_status *ts) + struct ath5k_txq *txq, struct ath5k_tx_status *ts) { struct ieee80211_tx_info *info; int i; @@ -1625,6 +1628,7 @@ ath5k_tx_frame_completed(struct ath5k_softc *sc, struct sk_buff *skb, else sc->stats.antenna_tx[0]++; /* invalid */ + trace_ath5k_tx_complete(sc, skb, txq, ts); ieee80211_tx_status(sc->hw, skb); } @@ -1661,7 +1665,7 @@ ath5k_tx_processq(struct ath5k_softc *sc, struct ath5k_txq *txq) dma_unmap_single(sc->dev, bf->skbaddr, skb->len, DMA_TO_DEVICE); - ath5k_tx_frame_completed(sc, skb, &ts); + ath5k_tx_frame_completed(sc, skb, txq, &ts); } /* @@ -1803,8 +1807,6 @@ ath5k_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif) goto out; } - ath5k_debug_dump_skb(sc, skb, "BC ", 1); - ath5k_txbuf_free_skb(sc, avf->bbuf); avf->bbuf->skb = skb; ret = ath5k_beacon_setup(sc, avf->bbuf); @@ -1899,6 +1901,8 @@ ath5k_beacon_send(struct ath5k_softc *sc) sc->opmode == NL80211_IFTYPE_MESH_POINT) ath5k_beacon_update(sc->hw, vif); + trace_ath5k_tx(sc, bf->skb, &sc->txqs[sc->bhalq]); + ath5k_hw_set_txdp(ah, sc->bhalq, bf->daddr); ath5k_hw_start_tx_dma(ah, sc->bhalq); ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, "TXDP[%u] = %llx (%p)\n", |