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Message-Id: <9f22e42c3077643fe66221eb180be6e66a0ef32a.1321989502.git.david.decotigny@google.com>
Date: Tue, 22 Nov 2011 11:23:38 -0800
From: David Decotigny <david.decotigny@...gle.com>
To: Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
Jesse Brandeburg <jesse.brandeburg@...el.com>,
Bruce Allan <bruce.w.allan@...el.com>,
Carolyn Wyborny <carolyn.wyborny@...el.com>,
Don Skidmore <donald.c.skidmore@...el.com>,
Greg Rose <gregory.v.rose@...el.com>,
Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
Alex Duyck <alexander.h.duyck@...el.com>,
John Ronciak <john.ronciak@...el.com>,
e1000-devel@...ts.sourceforge.net, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: David Decotigny <david.decotigny@...gle.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <eric.dumazet@...il.com>,
Ian Campbell <ian.campbell@...rix.com>,
Paul Gortmaker <paul.gortmaker@...driver.com>,
Maciej Żenczykowski <zenczykowski@...il.com>
Subject: [PATCH net-next v2 4/4] net-e1000e: Report carrier in loopback mode
From: Maciej Żenczykowski <zenczykowski@...il.com>
When interface is configured in loopback mode, force carrier check
positive. This is useful when interface does not have carrier and
test puts the interface in loopback mode.
Tested: pktgen loopback on 80003ES2LAN
Signed-off-by: David Decotigny <david.decotigny@...gle.com>
---
drivers/net/ethernet/intel/e1000e/phy.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/intel/e1000e/phy.c b/drivers/net/ethernet/intel/e1000e/phy.c
index f487a7f..9476c8f 100644
--- a/drivers/net/ethernet/intel/e1000e/phy.c
+++ b/drivers/net/ethernet/intel/e1000e/phy.c
@@ -1781,6 +1781,11 @@ s32 e1000e_phy_has_link_generic(struct e1000_hw *hw, u32 iterations,
u16 phy_reg;
int good_reads_phy_status = 0;
+ /* If loopback is enabled, we claim the link is up */
+ if ((0 == e1e_rphy(hw, PHY_CONTROL, &phy_reg))
+ && (phy_reg & MII_CR_LOOPBACK)) {
+ *success = true;
+ return 0;
}
/*
--
1.7.3.1
--
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