linux - linux

	Commit message (Collapse)	Author	Age	Files	Lines
*	mt7601u: check memory allocation failure	Christophe Jaillet	2017-08-24	1	-0/+5
\| \| \| \| \| \| \| \| \| \| \| \|	Check memory allocation failure and return -ENOMEM in such a case, as already done a few lines below. As 'dev->tx_q' can be NULL, we also need to check for that in 'mt7601u_free_tx()', and return early. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Jakub Kicinski <kubakici@wp.pl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
*	networking: introduce and use skb_put_data()	Johannes Berg	2017-06-16	1	-2/+2
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); \| -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); \| -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); \| -p = (t )skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(p)); \| -memcpy(p, data, sizeof(p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	mt7601u: use linux/bitfield.h	Jakub Kicinski	2016-09-09	1	-1/+1
\| \| \| \| \| \| \| \|	Use the newly added linux/bitfield.h. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Dinan Gunawardena <dinan.gunawardena@netronome.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
*	mt7601u: lock out rx path and tx status reporting	Jakub Kicinski	2015-08-10	1	-0/+2
\| \| \| \| \| \| \| \|	mac80211 requires that rx path does not run concurrently with tx status reporting. Add a spinlock which will ensure that. Signed-off-by: Jakub Kicinski <kubakici@wp.pl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
*	mt7601u: fix tx status reporting contexts	Jakub Kicinski	2015-08-10	1	-4/+26
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	mac80211 requires that rx path does not run concurrently with tx status reporting. Since rx path is run in driver tasklet, tx status cannot be reported directly from interrupt context (there would be no way to lock it out). Add tasklet for tx and move all possible code from irq handler there. Note: tx tasklet is needed because workqueue is queued very rarely and that kills TCP performance. Signed-off-by: Jakub Kicinski <kubakici@wp.pl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
*	mt7601u: use correct ieee80211_rx variant	Jakub Kicinski	2015-08-10	1	-1/+1
\| \| \| \| \| \| \| \|	Rx is run inside a tasklet so ieee80211_rx() should be used instead of ieee80211_rx_ni(). Signed-off-by: Jakub Kicinski <kubakici@wp.pl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
*	mt7601u: watch out for invalid-length frames	Jakub Kicinski	2015-06-08	1	-2/+12
\| \| \| \| \| \| \| \|	Users of older Ralink devices report that received frames sometimes have zero length. Watch out for that. Signed-off-by: Jakub Kicinski <kubakici@wp.pl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
*	mt7601u: unify paged and non-paged RX dma paths	Jakub Kicinski	2015-06-08	1	-50/+12
\| \| \| \| \|	Signed-off-by: Jakub Kicinski <kubakici@wp.pl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
*	add mt7601u driver	Jakub Kicinski	2015-05-28	1	-0/+533
	Add support for the simplest of MediaTek Wi-Fi devices - MT7601U. It is a single stream bgn chip with no bells or whistles. This driver is partially based on Felix's mt76 but IMHO it doesn't make sense to merge the two right now because MT7601U is a design somewhere between old Ralink devices and new Mediatek chips. There wouldn't be all that much code sharing with the devices mt76 supports. Situation may obviously change when someone decides to extend m76 with support for the more recent USB dongles. The driver supports only station mode. I'm hoping to add AP support when time allows. This driver sat on GitHub for quite a while and got some testing there: http://github.com/kuba-moo/mt7601u Signed-off-by: Jakub Kicinski <kubakici@wp.pl> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>