Commit 9176e186 authored Aug 13, 2025 by Lukasz Czapnik Committed by Greg Kroah-Hartman Oct 02, 2025

i40e: add max boundary check for VF filters



commit cb79fa7118c150c3c76a327894bb2eb878c02619 upstream.

There is no check for max filters that VF can request. Add it.

Fixes: e284fc28 ("i40e: Add and delete cloud filter")
Cc: stable@vger.kernel.org
Signed-off-by: Lukasz Czapnik <lukasz.czapnik@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent a88c1b27

drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -3665,6 +3665,8 @@ static int i40e_vc_del_cloud_filter(struct i40e_vf vf, u8 msg)
		aq_ret);
		}

		#define I40E_MAX_VF_CLOUD_FILTER 0xFF00

		/**
		* i40e_vc_add_cloud_filter
		* @vf: pointer to the VF info
		@@ -3704,6 +3706,14 @@ static int i40e_vc_add_cloud_filter(struct i40e_vf vf, u8 msg)
		goto err_out;
		}

		if (vf->num_cloud_filters >= I40E_MAX_VF_CLOUD_FILTER) {
		dev_warn(&pf->pdev->dev,
		"VF %d: Max number of filters reached, can't apply cloud filter\n",
		vf->vf_id);
		aq_ret = -ENOSPC;
		goto err_out;
		}

		cfilter = kzalloc(sizeof(*cfilter), GFP_KERNEL);
		if (!cfilter)
		return -ENOMEM;