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p54: implement set_coverage_class

Forráskód böngészése 
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>
This commit is contained in:
Christian Lamparter
2011-02-24 14:12:20 +01:00
committed by John W. Linville
szülő 41cae2d013
commit 3083e83c86
3 fájl változott, egészen pontosan 21 új sor hozzáadva és 1 régi sor törölve
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9
drivers/net/wireless/p54/fwio.c
Fájl megtekintése

@@ -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));