Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 3.18 82/98] igb: Unpair the queues when changing the number of queues | Date | Thu, 25 Oct 2018 10:18:37 -0400 |
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From: Shota Suzuki <suzuki_shota_t3@lab.ntt.co.jp>
[ Upstream commit 37a5d163fb447b39f7960d0534de30e88ad395bb ]
By the commit 72ddef0506da ("igb: Fix oops caused by missing queue pairing"), the IGB_FLAG_QUEUE_PAIRS flag can now be set when changing the number of queues by "ethtool -L", but it is never cleared unless the igb driver is reloaded. This patch clears it if queue pairing becomes unnecessary as a result of "ethtool -L".
Signed-off-by: Shota Suzuki <suzuki_shota_t3@lab.ntt.co.jp> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/net/ethernet/intel/igb/igb_main.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 1ffad88e8a29..84049078c4f0 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2941,6 +2941,8 @@ void igb_set_flag_queue_pairs(struct igb_adapter *adapter, */ if (adapter->rss_queues > (max_rss_queues / 2)) adapter->flags |= IGB_FLAG_QUEUE_PAIRS; + else + adapter->flags &= ~IGB_FLAG_QUEUE_PAIRS; break; } } -- 2.17.1
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