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Message-ID: <20180409001637.162453-80-alexander.levin@microsoft.com> Date: Mon, 9 Apr 2018 00:17:48 +0000 From: Sasha Levin <Alexander.Levin@...rosoft.com> To: "stable@...r.kernel.org" <stable@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> CC: Amritha Nambiar <amritha.nambiar@...el.com>, Jeff Kirsher <jeffrey.t.kirsher@...el.com>, Sasha Levin <Alexander.Levin@...rosoft.com> Subject: [PATCH AUTOSEL for 4.15 080/189] i40e: Fix channel addition in reset flow From: Amritha Nambiar <amritha.nambiar@...el.com> [ Upstream commit bbf0bdd41fbf71a008325bdcf0df63ab088bf532 ] Fix recreating the channel VSIs during the reset flow to reconfigure the Tx rings and the queue context associated with the channel VSI. Also update the next_base_queue for the VSI while rebuilding the channel VSIs after a reset. Signed-off-by: Amritha Nambiar <amritha.nambiar@...el.com> Tested-by: Andrew Bowers <andrewx.bowers@...el.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com> Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com> --- drivers/net/ethernet/intel/i40e/i40e_main.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index af792112a2d3..973bad818e81 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -9077,6 +9077,17 @@ static int i40e_rebuild_channels(struct i40e_vsi *vsi) vsi->uplink_seid); return ret; } + /* Reconfigure TX queues using QTX_CTL register */ + ret = i40e_channel_config_tx_ring(vsi->back, vsi, ch); + if (ret) { + dev_info(&vsi->back->pdev->dev, + "failed to configure TX rings for channel %u\n", + ch->seid); + return ret; + } + /* update 'next_base_queue' */ + vsi->next_base_queue = vsi->next_base_queue + + ch->num_queue_pairs; if (ch->max_tx_rate) { u64 credits = ch->max_tx_rate; -- 2.15.1
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