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Message-Id: <20220412062952.550900069@linuxfoundation.org>
Date: Tue, 12 Apr 2022 08:27:48 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Witold Fijalkowski <witoldx.fijalkowski@...el.com>,
Jedrzej Jagielski <jedrzej.jagielski@...el.com>,
Gurucharan G <gurucharanx.g@...el.com>,
Tony Nguyen <anthony.l.nguyen@...el.com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 050/343] i40e: Add sending commands in atomic context
From: Jedrzej Jagielski <jedrzej.jagielski@...el.com>
[ Upstream commit 59b3d7350ff35c939b8e173eb2eecac80a5ee046 ]
Change functions:
- i40e_aq_add_macvlan
- i40e_aq_remove_macvlan
- i40e_aq_delete_element
- i40e_aq_add_vsi
- i40e_aq_update_vsi_params
to explicitly use i40e_asq_send_command_atomic(..., true)
instead of i40e_asq_send_command, as they use mutexes and do some
work in an atomic context.
Without this change setting vlan via netdev will fail with
call trace cased by bug "BUG: scheduling while atomic".
Signed-off-by: Witold Fijalkowski <witoldx.fijalkowski@...el.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@...el.com>
Tested-by: Gurucharan G <gurucharanx.g@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/net/ethernet/intel/i40e/i40e_common.c | 21 +++++++++++--------
1 file changed, 12 insertions(+), 9 deletions(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_common.c b/drivers/net/ethernet/intel/i40e/i40e_common.c
index 9ddeb015eb7e..e830987a8c6d 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_common.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_common.c
@@ -1899,8 +1899,9 @@ i40e_status i40e_aq_add_vsi(struct i40e_hw *hw,
desc.flags |= cpu_to_le16((u16)(I40E_AQ_FLAG_BUF | I40E_AQ_FLAG_RD));
- status = i40e_asq_send_command(hw, &desc, &vsi_ctx->info,
- sizeof(vsi_ctx->info), cmd_details);
+ status = i40e_asq_send_command_atomic(hw, &desc, &vsi_ctx->info,
+ sizeof(vsi_ctx->info),
+ cmd_details, true);
if (status)
goto aq_add_vsi_exit;
@@ -2287,8 +2288,9 @@ i40e_status i40e_aq_update_vsi_params(struct i40e_hw *hw,
desc.flags |= cpu_to_le16((u16)(I40E_AQ_FLAG_BUF | I40E_AQ_FLAG_RD));
- status = i40e_asq_send_command(hw, &desc, &vsi_ctx->info,
- sizeof(vsi_ctx->info), cmd_details);
+ status = i40e_asq_send_command_atomic(hw, &desc, &vsi_ctx->info,
+ sizeof(vsi_ctx->info),
+ cmd_details, true);
vsi_ctx->vsis_allocated = le16_to_cpu(resp->vsi_used);
vsi_ctx->vsis_unallocated = le16_to_cpu(resp->vsi_free);
@@ -2673,8 +2675,8 @@ i40e_status i40e_aq_add_macvlan(struct i40e_hw *hw, u16 seid,
if (buf_size > I40E_AQ_LARGE_BUF)
desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_LB);
- status = i40e_asq_send_command(hw, &desc, mv_list, buf_size,
- cmd_details);
+ status = i40e_asq_send_command_atomic(hw, &desc, mv_list, buf_size,
+ cmd_details, true);
return status;
}
@@ -2715,8 +2717,8 @@ i40e_status i40e_aq_remove_macvlan(struct i40e_hw *hw, u16 seid,
if (buf_size > I40E_AQ_LARGE_BUF)
desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_LB);
- status = i40e_asq_send_command(hw, &desc, mv_list, buf_size,
- cmd_details);
+ status = i40e_asq_send_command_atomic(hw, &desc, mv_list, buf_size,
+ cmd_details, true);
return status;
}
@@ -3868,7 +3870,8 @@ i40e_status i40e_aq_delete_element(struct i40e_hw *hw, u16 seid,
cmd->seid = cpu_to_le16(seid);
- status = i40e_asq_send_command(hw, &desc, NULL, 0, cmd_details);
+ status = i40e_asq_send_command_atomic(hw, &desc, NULL, 0,
+ cmd_details, true);
return status;
}
--
2.35.1
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