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ice: check for a leaf node presence

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Check for a leaf node presence for a given VSI. This check is required
before removing a VSI since VSIs can't be removed with enabled queues
(with leaf nodes) from the FW scheduler tree unless its a reset.

Signed-off-by: Victor Raj <victor.raj@intel.com>
Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@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:
Victor Raj 2019-02-08 12:50:40 -08:00 • committed by Jeff Kirsher
parent 6e9650d533
commit f70b9d5f44
2 changed files with 24 additions and 0 deletions
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23
drivers/net/ethernet/intel/ice/ice_sched.c
View file

@ -1615,6 +1615,23 @@ ice_sched_rm_agg_vsi_info(struct ice_port_info *pi, u16 vsi_handle)
} }
} }
/**
* ice_sched_is_leaf_node_present - check for a leaf node in the sub-tree
* @node: pointer to the sub-tree node
*
* This function checks for a leaf node presence in a given sub-tree node.
*/
static bool ice_sched_is_leaf_node_present(struct ice_sched_node *node)
{
u8 i;
for (i = 0; i < node->num_children; i++)
if (ice_sched_is_leaf_node_present(node->children[i]))
return true;
/* check for a leaf node */
return (node->info.data.elem_type == ICE_AQC_ELEM_TYPE_LEAF);
}
/** /**
* ice_sched_rm_vsi_cfg - remove the VSI and its children nodes * ice_sched_rm_vsi_cfg - remove the VSI and its children nodes
* @pi: port information structure * @pi: port information structure
@ -1649,6 +1666,12 @@ ice_sched_rm_vsi_cfg(struct ice_port_info *pi, u16 vsi_handle, u8 owner)
if (!vsi_node) if (!vsi_node)
continue; continue;
if (ice_sched_is_leaf_node_present(vsi_node)) {
ice_debug(pi->hw, ICE_DBG_SCHED,
"VSI has leaf nodes in TC %d\n", i);
status = ICE_ERR_IN_USE;
goto exit_sched_rm_vsi_cfg;
}
while (j < vsi_node->num_children) { while (j < vsi_node->num_children) {
if (vsi_node->children[j]->owner == owner) { if (vsi_node->children[j]->owner == owner) {
ice_free_sched_node(pi, vsi_node->children[j]); ice_free_sched_node(pi, vsi_node->children[j]);

1
drivers/net/ethernet/intel/ice/ice_status.h
View file

@ -22,6 +22,7 @@ enum ice_status {
ICE_ERR_OUT_OF_RANGE = -13, ICE_ERR_OUT_OF_RANGE = -13,
ICE_ERR_ALREADY_EXISTS = -14, ICE_ERR_ALREADY_EXISTS = -14,
ICE_ERR_DOES_NOT_EXIST = -15, ICE_ERR_DOES_NOT_EXIST = -15,
ICE_ERR_IN_USE = -16,
ICE_ERR_MAX_LIMIT = -17, ICE_ERR_MAX_LIMIT = -17,
ICE_ERR_RESET_ONGOING = -18, ICE_ERR_RESET_ONGOING = -18,
ICE_ERR_BUF_TOO_SHORT = -52, ICE_ERR_BUF_TOO_SHORT = -52,