From 665c8c8ee405738375b679246b49342ce38ba056 Mon Sep 17 00:00:00 2001 From: "Williams, Mitch A" Date: Tue, 7 Jun 2011 14:22:57 -0700 Subject: [PATCH] igb: fix i350 SR-IOV failture 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. CC: stable@kernel.org Signed-off-by: Mitch Williams Tested-by: Jeff Pieper Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/igb/igb_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 18fccf913635..2c28621eb30b 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -2373,6 +2373,9 @@ static int __devinit igb_sw_init(struct igb_adapter *adapter) } #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 -- 2.20.1