This is a note to let you know that I've just added the patch titled
igb: fix i350 SR-IOV failture
to the 2.6.39-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
igb-fix-i350-sr-iov-failture.patch
and it can be found in the queue-2.6.39 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 665c8c8ee405738375b679246b49342ce38ba056 Mon Sep 17 00:00:00 2001
From: "Williams, Mitch A" <[email protected]>
Date: Tue, 7 Jun 2011 14:22:57 -0700
Subject: igb: fix i350 SR-IOV failture
From: "Williams, Mitch A" <[email protected]>
commit 665c8c8ee405738375b679246b49342ce38ba056 upstream.
When SR-IOV is enabled, i350 devices fail to pass traffic. This is due to
the driver attempting to enable RSS on the PF device, which is not
supported by the i350.
When max_vfs is specified on an i350 adapter, set the number of RSS queues
to 1.
This issue affects 2.6.39 as well.
Signed-off-by: Mitch Williams <[email protected]>
Tested-by: Jeff Pieper <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/igb/igb_main.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -2372,6 +2372,9 @@ static int __devinit igb_sw_init(struct
}
#endif /* CONFIG_PCI_IOV */
adapter->rss_queues = min_t(u32, IGB_MAX_RX_QUEUES, num_online_cpus());
+ /* i350 cannot do RSS and SR-IOV at the same time */
+ if (hw->mac.type == e1000_i350 && adapter->vfs_allocated_count)
+ adapter->rss_queues = 1;
/*
* if rss_queues > 4 or vfs are going to be allocated with rss_queues
Patches currently in stable-queue which might be from
[email protected] are
queue-2.6.39/igb-fix-i350-sr-iov-failture.patch
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