mwifiex: use map/unmap APIs in TX and RX to reduce memcpy

This patch is an enhacement to mwifiex_pcie driver to use
map/unmap PCI memory APIs. This reduces one memcpy each in TX
path and RX path, and enhances throughput.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/pcie.h b/drivers/net/wireless/mwifiex/pcie.h
index 24a39b32a222..37eeb2ca6b29 100644
--- a/drivers/net/wireless/mwifiex/pcie.h
+++ b/drivers/net/wireless/mwifiex/pcie.h
@@ -159,4 +159,15 @@ mwifiex_pcie_txbd_empty(struct pcie_service_card *card, u32 rdptr)
         return 0;
 }
 
+static inline int
+mwifiex_pcie_txbd_not_full(struct pcie_service_card *card)
+{
+        if (((card->txbd_wrptr & MWIFIEX_TXBD_MASK) !=
+             (card->txbd_rdptr & MWIFIEX_TXBD_MASK)) ||
+            ((card->txbd_wrptr & MWIFIEX_BD_FLAG_ROLLOVER_IND) !=
+             (card->txbd_rdptr & MWIFIEX_BD_FLAG_ROLLOVER_IND)))
+                return 1;
+
+        return 0;
+}
 #endif /* _MWIFIEX_PCIE_H */