From: Vladimir Kondratiev Date: Tue, 27 May 2014 11:45:46 +0000 (+0300) Subject: wil6210: inline functions for vring hi/lo watermarks X-Git-Tag: v3.16-rc1~27^2~99^2^2~16 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=5bb6423e8f23b755cb20c21aa896cc4d4baf6bc5;p=~emulex%2Finfiniband.git wil6210: inline functions for vring hi/lo watermarks Provide clear definition of the watermarks for the vring descriptor space. Signed-off-by: Vladimir Kondratiev Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c index c8c547457eb..82140e0e75d 100644 --- a/drivers/net/wireless/ath/wil6210/txrx.c +++ b/drivers/net/wireless/ath/wil6210/txrx.c @@ -64,6 +64,22 @@ static inline int wil_vring_avail_tx(struct vring *vring) return vring->size - used - 1; } +/** + * wil_vring_wmark_low - low watermark for available descriptor space + */ +static inline int wil_vring_wmark_low(struct vring *vring) +{ + return vring->size/8; +} + +/** + * wil_vring_wmark_high - high watermark for available descriptor space + */ +static inline int wil_vring_wmark_high(struct vring *vring) +{ + return vring->size/4; +} + static int wil_vring_alloc(struct wil6210_priv *wil, struct vring *vring) { struct device *dev = wil_to_dev(wil); @@ -1007,7 +1023,7 @@ netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev) rc = wil_tx_vring(wil, vring, skb); /* do we still have enough room in the vring? */ - if (wil_vring_avail_tx(vring) < vring->size/8) + if (wil_vring_avail_tx(vring) < wil_vring_wmark_low(vring)) netif_tx_stop_all_queues(wil_to_ndev(wil)); switch (rc) { @@ -1116,7 +1132,7 @@ int wil_tx_complete(struct wil6210_priv *wil, int ringid) done++; } } - if (wil_vring_avail_tx(vring) > vring->size/4) + if (wil_vring_avail_tx(vring) > wil_vring_wmark_high(vring)) netif_tx_wake_all_queues(wil_to_ndev(wil)); return done;