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Message-ID: <1418835576.1160.38.camel@dcbw.local>
Date: Wed, 17 Dec 2014 10:59:36 -0600
From: Dan Williams <dcbw@...hat.com>
To: netdev@...r.kernel.org
Cc: Joshua Watt <jpewdev@...il.com>, jpirko@...hat.com,
Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH] Documentation: clarify phys_port_id
Signed-off-by: Dan Williams <dcbw@...hat.com>
---
Documentation/ABI/testing/sysfs-class-net | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/Documentation/ABI/testing/sysfs-class-net b/Documentation/ABI/testing/sysfs-class-net
index e1b2e78..7fe823a 100644
--- a/Documentation/ABI/testing/sysfs-class-net
+++ b/Documentation/ABI/testing/sysfs-class-net
@@ -186,7 +186,12 @@ KernelVersion: 3.12
Contact: netdev@...r.kernel.org
Description:
Indicates the interface unique physical port identifier within
- the NIC, as a string.
+ the NIC, as a string. If two net_device objects share physical
+ hardware or other resources, and/or do not operate independently
+ both net_device objects should be assigned the
+ same phys_port_id. phys_port_id should be as globally unique
+ as possible to prevent conflicts between different drivers and
+ vendors, eg with MAC addresses or hardware GUIDs.
What: /sys/class/net/<iface>/speed
Date: October 2009
--
1.9.3
--
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