From: Shannon Nelson <shannon.nelson@oracle.com>
Date: Tue, 4 Apr 2017 18:41:35 +0000 (-0700)
Subject: bnxt: add dma mapping attributes
X-Git-Tag: v4.1.12-106.0.20170710_2300~30
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=8c2876b86e2ec7d2f6f46a380d64d43f0cd2a74b;p=users%2Fjedix%2Flinux-maple.git

bnxt: add dma mapping attributes

On the SPARC platform we need to use the DMA_ATTR_WEAK_ORDERING
attribute in our dma mapping in order to get the expected performance
out of the receive path.  Setting this boosts a simple iperf receive
session from 2 Gbe to 23.4 Gbe.

Orabug: 26366387

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Reviewed-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: Tom Saeger <tom.saeger@oracle.com>
Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Brian Maly <brian.maly@oracle.com>

Conflicts:
	drivers/net/ethernet/broadcom/bnxt/bnxt.c
Signed-off-by: Somasundaram Krishnasamy <somasundaram.krishnasamy@oracle.com>
---

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 611415daf683..a9ccbebe8128 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -2016,6 +2016,10 @@ static void bnxt_free_rx_skbs(struct bnxt *bp)
 			if (!data)
 				continue;
 
+			dma_unmap_single_attrs(&pdev->dev, rx_buf->mapping,
+					       bp->rx_buf_use_size, bp->rx_dir,
+					       &attrs);
+
 			rx_buf->data = NULL;
 
 			if (BNXT_RX_PAGE_MODE(bp)) {