diff options
| author | Christian Lamparter <chunkeey@googlemail.com> | 2011-02-24 14:12:20 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-02-25 15:32:33 -0500 |
| commit | 3083e83c86e604ac7005c100b7d7242389407ba5 (patch) | |
| tree | eda332de50da769ea0d4fddec5530a6c6edf0c21 /drivers/net/wireless/p54 | |
| parent | 41cae2d01385af4199666db57274c0df3283b065 (diff) | |
p54: implement set_coverage_class
The callback sets slot time as specified in IEEE 802.11-2007
section 17.3.8.6 and raises round trip delay accordingly.
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/p54')
| -rw-r--r-- | drivers/net/wireless/p54/fwio.c | 9 | ||||
| -rw-r--r-- | drivers/net/wireless/p54/main.c | 12 | ||||
| -rw-r--r-- | drivers/net/wireless/p54/p54.h | 1 |
3 files changed, 21 insertions, 1 deletions
diff --git a/drivers/net/wireless/p54/fwio.c b/drivers/net/wireless/p54/fwio.c index 0d3d108f6fe2..2fab7d20ffc2 100644 --- a/drivers/net/wireless/p54/fwio.c +++ b/drivers/net/wireless/p54/fwio.c @@ -559,6 +559,7 @@ int p54_set_edcf(struct p54_common *priv) { struct sk_buff *skb; struct p54_edcf *edcf; + u8 rtd; skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf), P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC); @@ -575,9 +576,15 @@ int p54_set_edcf(struct p54_common *priv) edcf->sifs = 0x0a; edcf->eofpad = 0x06; } + /* + * calculate the extra round trip delay according to the + * formula from 802.11-2007 17.3.8.6. + */ + rtd = 3 * priv->coverage_class; + edcf->slottime += rtd; + edcf->round_trip_delay = cpu_to_le16(rtd); /* (see prism54/isl_oid.h for further details) */ edcf->frameburst = cpu_to_le16(0); - edcf->round_trip_delay = cpu_to_le16(0); edcf->flags = 0; memset(edcf->mapping, 0, sizeof(edcf->mapping)); memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue)); diff --git a/drivers/net/wireless/p54/main.c b/drivers/net/wireless/p54/main.c index e14a05bbc485..d7a92af24dd5 100644 --- a/drivers/net/wireless/p54/main.c +++ b/drivers/net/wireless/p54/main.c @@ -566,6 +566,17 @@ static void p54_flush(struct ieee80211_hw *dev, bool drop) WARN(total, "tx flush timeout, unresponsive firmware"); } +static void p54_set_coverage_class(struct ieee80211_hw *dev, u8 coverage_class) +{ + struct p54_common *priv = dev->priv; + + mutex_lock(&priv->conf_mutex); + /* support all coverage class values as in 802.11-2007 Table 7-27 */ + priv->coverage_class = clamp_t(u8, coverage_class, 0, 31); + p54_set_edcf(priv); + mutex_unlock(&priv->conf_mutex); +} + static const struct ieee80211_ops p54_ops = { .tx = p54_tx_80211, .start = p54_start, @@ -584,6 +595,7 @@ static const struct ieee80211_ops p54_ops = { .conf_tx = p54_conf_tx, .get_stats = p54_get_stats, .get_survey = p54_get_survey, + .set_coverage_class = p54_set_coverage_class, }; struct ieee80211_hw *p54_init_common(size_t priv_data_len) diff --git a/drivers/net/wireless/p54/p54.h b/drivers/net/wireless/p54/p54.h index f951c8f31863..50730fc23fe5 100644 --- a/drivers/net/wireless/p54/p54.h +++ b/drivers/net/wireless/p54/p54.h @@ -217,6 +217,7 @@ struct p54_common { u32 tsf_low32, tsf_high32; u32 basic_rate_mask; u16 aid; + u8 coverage_class; bool powersave_override; __le32 beacon_req_id; struct completion beacon_comp; |