AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-22 16:23:29 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

i40evf: Validate the number of queues a PF sends

Browse Source 
A PF can send any number of queues to the VF and the VF may not
be able to support that many. Check to see that the number of
queues is less than or equal to the max number of queues the
VF can have.

Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@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:
Paul M Stillwell Jr 2018-08-20 08:12:29 -07:00 committed by Jeff Kirsher
parent ae1e29f671
commit 3c81891091
1 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
View File

@ -153,6 +153,32 @@ int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter)
NULL, 0); NULL, 0);
} }
/**
* i40evf_validate_num_queues
* @adapter: adapter structure
*
* Validate that the number of queues the PF has sent in
* VIRTCHNL_OP_GET_VF_RESOURCES is not larger than the VF can handle.
**/
static void i40evf_validate_num_queues(struct i40evf_adapter *adapter)
{
if (adapter->vf_res->num_queue_pairs > I40EVF_MAX_REQ_QUEUES) {
struct virtchnl_vsi_resource *vsi_res;
int i;
dev_info(&adapter->pdev->dev, "Received %d queues, but can only have a max of %d\n",
adapter->vf_res->num_queue_pairs,
I40EVF_MAX_REQ_QUEUES);
dev_info(&adapter->pdev->dev, "Fixing by reducing queues to %d\n",
I40EVF_MAX_REQ_QUEUES);
adapter->vf_res->num_queue_pairs = I40EVF_MAX_REQ_QUEUES;
for (i = 0; i < adapter->vf_res->num_vsis; i++) {
vsi_res = &adapter->vf_res->vsi_res[i];
vsi_res->num_queue_pairs = I40EVF_MAX_REQ_QUEUES;
}
}
}
/** /**
* i40evf_get_vf_config * i40evf_get_vf_config
* @adapter: private adapter structure * @adapter: private adapter structure
@ -195,6 +221,11 @@ int i40evf_get_vf_config(struct i40evf_adapter *adapter)
err = (i40e_status)le32_to_cpu(event.desc.cookie_low); err = (i40e_status)le32_to_cpu(event.desc.cookie_low);
memcpy(adapter->vf_res, event.msg_buf, min(event.msg_len, len)); memcpy(adapter->vf_res, event.msg_buf, min(event.msg_len, len));
/* some PFs send more queues than we should have so validate that
* we aren't getting too many queues
*/
if (!err)
i40evf_validate_num_queues(adapter);
i40e_vf_parse_hw_config(hw, adapter->vf_res); i40e_vf_parse_hw_config(hw, adapter->vf_res);
out_alloc: out_alloc:
kfree(event.msg_buf); kfree(event.msg_buf);
@ -1329,6 +1360,7 @@ void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
I40E_MAX_VF_VSI * I40E_MAX_VF_VSI *
sizeof(struct virtchnl_vsi_resource); sizeof(struct virtchnl_vsi_resource);
memcpy(adapter->vf_res, msg, min(msglen, len)); memcpy(adapter->vf_res, msg, min(msglen, len));
i40evf_validate_num_queues(adapter);
i40e_vf_parse_hw_config(&adapter->hw, adapter->vf_res); i40e_vf_parse_hw_config(&adapter->hw, adapter->vf_res);
if (is_zero_ether_addr(adapter->hw.mac.addr)) { if (is_zero_ether_addr(adapter->hw.mac.addr)) {
/* restore current mac address */ /* restore current mac address */