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i40e: Fix virtchnl_queue_select bitmap validation 

Currently in i40e_vc_disable_queues_msg() we are incorrectly
validating the virtchnl queue select bitmaps. The
virtchnl_queue_select rx_queues and tx_queue bitmap is being
compared against ICE_MAX_VF_QUEUES, but the problem is that
these bitmaps can have a value greater than I40E_MAX_VF_QUEUES.
Fix this by comparing the bitmaps against BIT(I40E_MAX_VF_QUEUES).

Also, add the function i40e_vc_validate_vqs_bitmaps() that checks to see
if both virtchnl_queue_select bitmaps are empty along with checking that
the bitmaps only have valid bits set. This function can then be used in
both the queue enable and disable flows.

Suggested-by: Arkady Gilinksky <arkady.gilinsky@harmonicinc.com>
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Brett Creeley 2019-11-13 11:28:17 -08:00 committed by Jeff Kirsher
parent 9546a0b7ce
commit d9d6a9aed3
1 changed files with 18 additions and 4 deletions
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22
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
View File

@ -2321,6 +2321,22 @@ static int i40e_ctrl_vf_rx_rings(struct i40e_vsi *vsi, unsigned long q_map,
return ret;
}
/**
* i40e_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTHCHNL
* @vqs: virtchnl_queue_select structure containing bitmaps to validate
*
* Returns true if validation was successful, else false.
*/
static bool i40e_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs)
{
if ((!vqs->rx_queues && !vqs->tx_queues) ||
vqs->rx_queues >= BIT(I40E_MAX_VF_QUEUES) ||
vqs->tx_queues >= BIT(I40E_MAX_VF_QUEUES))
return false;
return true;
}
/**
* i40e_vc_enable_queues_msg
* @vf: pointer to the VF info
@ -2346,7 +2362,7 @@ static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg)
goto error_param;
}
if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
if (i40e_vc_validate_vqs_bitmaps(vqs)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}
@ -2408,9 +2424,7 @@ static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg)
goto error_param;
}
if ((vqs->rx_queues == 0 && vqs->tx_queues == 0) ||
vqs->rx_queues > I40E_MAX_VF_QUEUES ||
vqs->tx_queues > I40E_MAX_VF_QUEUES) {
if (i40e_vc_validate_vqs_bitmaps(vqs)) {
aq_ret = I40E_ERR_PARAM;
goto error_param;
}