diff mbox

[dpdk-dev,v2,2/2] doc: announce ixgbe MTU setting limitation

Message ID 1486603680-62864-3-git-send-email-wenzhuo.lu@intel.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel compilation fail Compilation issues

Commit Message

Wenzhuo Lu Feb. 9, 2017, 1:28 a.m. UTC 
  Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---
 doc/guides/nics/ixgbe.rst | 9 +++++++++
 1 file changed, 9 insertions(+)

Comments

John McNamara Feb. 9, 2017, 3:05 p.m. UTC | #1 
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Wenzhuo Lu
> Sent: Thursday, February 9, 2017 1:28 AM
> To: dev@dpdk.org
> Cc: Lu, Wenzhuo <wenzhuo.lu@intel.com>
> Subject: [dpdk-dev] [PATCH v2 2/2] doc: announce ixgbe MTU setting
> limitation
> 
> Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

Acked-by: John McNamara <john.mcnamara@intel.com>
diff mbox

Patch

diff --git a/doc/guides/nics/ixgbe.rst b/doc/guides/nics/ixgbe.rst
index 05ecc2a..aceeb13 100644
--- a/doc/guides/nics/ixgbe.rst
+++ b/doc/guides/nics/ixgbe.rst
@@ -233,6 +233,15 @@  be calculated as follows:
 
 In order to ensure valid results, it is recommended to poll every 4 minutes.
 
+MTU setting
+~~~~~~~~~~~
+
+Although the user can set the MTU separately on PF and VF ports, the ixgbe NIC
+only supports one global MTU per physical port.
+So when the user sets different MTUs on PF and VF ports in one physical port,
+the real MTU for all these PF and VF ports is the largest value set.
+This behavior is based on the kernel driver behavior.
+
 
 Supported Chipsets and NICs
 ---------------------------