From: Timur Tabi <timur@codeaurora•org>
To: David Miller <davem@davemloft•net>,
Florian Fainelli <f.fainelli@gmail•com>,
alokc@codeaurora•org, netdev@vger•kernel.org
Subject: [PATCH 2/2] [v2] net: qcom/emac: enable flow control if requested
Date: Mon, 7 Nov 2016 10:51:41 -0600 [thread overview]
Message-ID: <1478537501-23454-3-git-send-email-timur@codeaurora.org> (raw)
In-Reply-To: <1478537501-23454-1-git-send-email-timur@codeaurora.org>
If the PHY has been configured to allow pause frames, then the MAC
should be configured to generate and/or accept those frames.
Signed-off-by: Timur Tabi <timur@codeaurora•org>
---
v2: fix calculation when TXFC should be set
drivers/net/ethernet/qualcomm/emac/emac-mac.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/qualcomm/emac/emac-mac.c b/drivers/net/ethernet/qualcomm/emac/emac-mac.c
index 70a55dc..0b4deb3 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac-mac.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac-mac.c
@@ -575,10 +575,11 @@ void emac_mac_start(struct emac_adapter *adpt)
mac |= TXEN | RXEN; /* enable RX/TX */
- /* We don't have ethtool support yet, so force flow-control mode
- * to 'full' always.
- */
- mac |= TXFC | RXFC;
+ /* Configure MAC flow control to match the PHY's settings. */
+ if (phydev->pause)
+ mac |= RXFC;
+ if (phydev->pause != phydev->asym_pause)
+ mac |= TXFC;
/* setup link speed */
mac &= ~SPEED_MASK;
--
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm
Technologies, Inc. Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.
next prev parent reply other threads:[~2016-11-07 16:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-07 16:51 [PATCH 0/2] net: qcom/emac: ensure that pause frames are enabled Timur Tabi
2016-11-07 16:51 ` [PATCH 1/2] net: qcom/emac: configure the external phy to allow pause frames Timur Tabi
2016-11-07 16:51 ` Timur Tabi [this message]
2016-11-09 23:45 ` [PATCH 0/2] net: qcom/emac: ensure that pause frames are enabled David Miller
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