netdev - [PATCH 1/2] i40e: return false from i40e_reset

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Message-Id: <20250514145720.91675-2-robert.malz@canonical.com>
Date: Wed, 14 May 2025 16:57:19 +0200
From: Robert Malz <robert.malz@...onical.com>
To: netdev@...r.kernel.org,
	intel-wired-lan@...ts.osuosl.org,
	anthony.l.nguyen@...el.com,
	przemyslaw.kitszel@...el.com,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	sylwesterx.dziedziuch@...el.com,
	mateusz.palczewski@...el.com,
	jacob.e.keller@...el.com
Subject: [PATCH 1/2] i40e: return false from i40e_reset_vf if reset is in progress

The function i40e_vc_reset_vf attempts, up to 20 times, to handle a
VF reset request, using the return value of i40e_reset_vf as an indicator
of whether the reset was successfully triggered. Currently, i40e_reset_vf
always returns true, which causes new reset requests to be ignored if a
different VF reset is already in progress.

This patch updates the return value of i40e_reset_vf to reflect when
another VF reset is in progress, allowing the caller to properly use
the retry mechanism.

Fixes: 52424f974bc5 ("i40e: Fix VF hang when reset is triggered on another VF")
Signed-off-by: Robert Malz <robert.malz@...onical.com>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 1120f8e4bb67..abd72ab36af7 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -1546,8 +1546,8 @@ static void i40e_cleanup_reset_vf(struct i40e_vf *vf)
  * @vf: pointer to the VF structure
  * @flr: VFLR was issued or not
  *
- * Returns true if the VF is in reset, resets successfully, or resets
- * are disabled and false otherwise.
+ * Returns true if resets are disabled or was performed successfully,
+ * false if reset is already in progress.
  **/
 bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
 {
@@ -1566,7 +1566,7 @@ bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
 
 	/* If VF is being reset already we don't need to continue. */
 	if (test_and_set_bit(I40E_VF_STATE_RESETTING, &vf->vf_states))
-		return true;
+		return false;
 
 	i40e_trigger_vf_reset(vf, flr);
 
-- 
2.34.1