net/iavf: support asynchronous virtual channel message

Add support for asynchronous virtual channel messages, specifically for
inline IPsec messages.

Signed-off-by: Declan Doherty <declan.doherty@intel.com>
Signed-off-by: Abhijit Sinha <abhijit.sinha@intel.com>
Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
This commit is contained in:
Radu Nicolau 2021-10-28 17:04:56 +01:00 committed by Qi Zhang
parent 1e728b0112
commit 8410842505
2 changed files with 108 additions and 55 deletions

View File

@ -193,6 +193,7 @@ struct iavf_info {
uint64_t supported_rxdid;
uint8_t *proto_xtr; /* proto xtr type for all queues */
volatile enum virtchnl_ops pend_cmd; /* pending command not finished */
uint32_t pend_cmd_count;
int cmd_retval; /* return value of the cmd response from PF */
uint8_t *aq_resp; /* buffer to store the adminq response from PF */
@ -339,15 +340,33 @@ _clear_cmd(struct iavf_info *vf)
static inline int
_atomic_set_cmd(struct iavf_info *vf, enum virtchnl_ops ops)
{
int ret = rte_atomic32_cmpset((volatile uint32_t *)&vf->pend_cmd,
VIRTCHNL_OP_UNKNOWN, ops);
enum virtchnl_ops op_unk = VIRTCHNL_OP_UNKNOWN;
int ret = __atomic_compare_exchange(&vf->pend_cmd, &op_unk, &ops,
0, __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
if (!ret)
PMD_DRV_LOG(ERR, "There is incomplete cmd %d", vf->pend_cmd);
__atomic_store_n(&vf->pend_cmd_count, 1, __ATOMIC_RELAXED);
return !ret;
}
/* Check there is pending cmd in execution. If none, set new command. */
static inline int
_atomic_set_async_response_cmd(struct iavf_info *vf, enum virtchnl_ops ops)
{
enum virtchnl_ops op_unk = VIRTCHNL_OP_UNKNOWN;
int ret = __atomic_compare_exchange(&vf->pend_cmd, &op_unk, &ops,
0, __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
if (!ret)
PMD_DRV_LOG(ERR, "There is incomplete cmd %d", vf->pend_cmd);
__atomic_store_n(&vf->pend_cmd_count, 2, __ATOMIC_RELAXED);
return !ret;
}
int iavf_check_api_version(struct iavf_adapter *adapter);
int iavf_get_vf_resource(struct iavf_adapter *adapter);
void iavf_handle_virtchnl_msg(struct rte_eth_dev *dev);

View File

@ -24,8 +24,8 @@
#include "iavf.h"
#include "iavf_rxtx.h"
#define MAX_TRY_TIMES 200
#define ASQ_DELAY_MS 10
#define MAX_TRY_TIMES 2000
#define ASQ_DELAY_MS 1
static uint32_t
iavf_convert_link_speed(enum virtchnl_link_speed virt_link_speed)
@ -143,7 +143,8 @@ iavf_read_msg_from_pf(struct iavf_adapter *adapter, uint16_t buf_len,
}
static int
iavf_execute_vf_cmd(struct iavf_adapter *adapter, struct iavf_cmd_info *args)
iavf_execute_vf_cmd(struct iavf_adapter *adapter, struct iavf_cmd_info *args,
int async)
{
struct iavf_hw *hw = IAVF_DEV_PRIVATE_TO_HW(adapter);
struct iavf_info *vf = IAVF_DEV_PRIVATE_TO_VF(adapter);
@ -155,8 +156,14 @@ iavf_execute_vf_cmd(struct iavf_adapter *adapter, struct iavf_cmd_info *args)
if (vf->vf_reset)
return -EIO;
if (_atomic_set_cmd(vf, args->ops))
return -1;
if (async) {
if (_atomic_set_async_response_cmd(vf, args->ops))
return -1;
} else {
if (_atomic_set_cmd(vf, args->ops))
return -1;
}
ret = iavf_aq_send_msg_to_pf(hw, args->ops, IAVF_SUCCESS,
args->in_args, args->in_args_size, NULL);
@ -252,9 +259,11 @@ static void
iavf_handle_pf_event_msg(struct rte_eth_dev *dev, uint8_t *msg,
uint16_t msglen)
{
struct iavf_adapter *adapter =
IAVF_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
struct iavf_info *vf = &adapter->vf;
struct virtchnl_pf_event *pf_msg =
(struct virtchnl_pf_event *)msg;
struct iavf_info *vf = IAVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
if (msglen < sizeof(struct virtchnl_pf_event)) {
PMD_DRV_LOG(DEBUG, "Error event");
@ -330,18 +339,42 @@ iavf_handle_virtchnl_msg(struct rte_eth_dev *dev)
case iavf_aqc_opc_send_msg_to_vf:
if (msg_opc == VIRTCHNL_OP_EVENT) {
iavf_handle_pf_event_msg(dev, info.msg_buf,
info.msg_len);
info.msg_len);
} else {
/* check for inline IPsec events */
struct inline_ipsec_msg *imsg =
(struct inline_ipsec_msg *)info.msg_buf;
struct rte_eth_event_ipsec_desc desc;
if (msg_opc ==
VIRTCHNL_OP_INLINE_IPSEC_CRYPTO &&
imsg->ipsec_opcode ==
INLINE_IPSEC_OP_EVENT) {
struct virtchnl_ipsec_event *ev =
imsg->ipsec_data.event;
desc.subtype =
RTE_ETH_EVENT_IPSEC_UNKNOWN;
desc.metadata = ev->ipsec_event_data;
rte_eth_dev_callback_process(dev,
RTE_ETH_EVENT_IPSEC,
&desc);
return;
}
/* read message and it's expected one */
if (msg_opc == vf->pend_cmd)
_notify_cmd(vf, msg_ret);
else
PMD_DRV_LOG(ERR, "command mismatch,"
"expect %u, get %u",
vf->pend_cmd, msg_opc);
if (msg_opc == vf->pend_cmd) {
uint32_t cmd_count =
__atomic_sub_fetch(&vf->pend_cmd_count,
1, __ATOMIC_RELAXED);
if (cmd_count == 0)
_notify_cmd(vf, msg_ret);
} else {
PMD_DRV_LOG(ERR,
"command mismatch, expect %u, get %u",
vf->pend_cmd, msg_opc);
}
PMD_DRV_LOG(DEBUG,
"adminq response is received,"
" opcode = %d", msg_opc);
"adminq response is received, opcode = %d",
msg_opc);
}
break;
default:
@ -365,7 +398,7 @@ iavf_enable_vlan_strip(struct iavf_adapter *adapter)
args.in_args_size = 0;
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
ret = iavf_execute_vf_cmd(adapter, &args);
ret = iavf_execute_vf_cmd(adapter, &args, 0);
if (ret)
PMD_DRV_LOG(ERR, "Failed to execute command of"
" OP_ENABLE_VLAN_STRIPPING");
@ -386,7 +419,7 @@ iavf_disable_vlan_strip(struct iavf_adapter *adapter)
args.in_args_size = 0;
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
ret = iavf_execute_vf_cmd(adapter, &args);
ret = iavf_execute_vf_cmd(adapter, &args, 0);
if (ret)
PMD_DRV_LOG(ERR, "Failed to execute command of"
" OP_DISABLE_VLAN_STRIPPING");
@ -415,7 +448,7 @@ iavf_check_api_version(struct iavf_adapter *adapter)
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_INIT_LOG(ERR, "Fail to execute command of OP_VERSION");
return err;
@ -468,12 +501,13 @@ iavf_get_vf_resource(struct iavf_adapter *adapter)
VIRTCHNL_VF_OFFLOAD_CRC |
VIRTCHNL_VF_OFFLOAD_VLAN_V2 |
VIRTCHNL_VF_LARGE_NUM_QPAIRS |
VIRTCHNL_VF_OFFLOAD_QOS;
VIRTCHNL_VF_OFFLOAD_QOS |
+ VIRTCHNL_VF_OFFLOAD_INLINE_IPSEC_CRYPTO;
args.in_args = (uint8_t *)&caps;
args.in_args_size = sizeof(caps);
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR,
@ -518,7 +552,7 @@ iavf_get_supported_rxdid(struct iavf_adapter *adapter)
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
ret = iavf_execute_vf_cmd(adapter, &args);
ret = iavf_execute_vf_cmd(adapter, &args, 0);
if (ret) {
PMD_DRV_LOG(ERR,
"Failed to execute command of OP_GET_SUPPORTED_RXDIDS");
@ -562,7 +596,7 @@ iavf_config_vlan_strip_v2(struct iavf_adapter *adapter, bool enable)
args.in_args_size = sizeof(vlan_strip);
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
ret = iavf_execute_vf_cmd(adapter, &args);
ret = iavf_execute_vf_cmd(adapter, &args, 0);
if (ret)
PMD_DRV_LOG(ERR, "fail to execute command %s",
enable ? "VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2" :
@ -602,7 +636,7 @@ iavf_config_vlan_insert_v2(struct iavf_adapter *adapter, bool enable)
args.in_args_size = sizeof(vlan_insert);
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
ret = iavf_execute_vf_cmd(adapter, &args);
ret = iavf_execute_vf_cmd(adapter, &args, 0);
if (ret)
PMD_DRV_LOG(ERR, "fail to execute command %s",
enable ? "VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2" :
@ -645,7 +679,7 @@ iavf_add_del_vlan_v2(struct iavf_adapter *adapter, uint16_t vlanid, bool add)
args.in_args_size = sizeof(vlan_filter);
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR, "fail to execute command %s",
add ? "OP_ADD_VLAN_V2" : "OP_DEL_VLAN_V2");
@ -666,7 +700,7 @@ iavf_get_vlan_offload_caps_v2(struct iavf_adapter *adapter)
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
ret = iavf_execute_vf_cmd(adapter, &args);
ret = iavf_execute_vf_cmd(adapter, &args, 0);
if (ret) {
PMD_DRV_LOG(ERR,
"Failed to execute command of VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS");
@ -697,7 +731,7 @@ iavf_enable_queues(struct iavf_adapter *adapter)
args.in_args_size = sizeof(queue_select);
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR,
"Failed to execute command of OP_ENABLE_QUEUES");
@ -725,7 +759,7 @@ iavf_disable_queues(struct iavf_adapter *adapter)
args.in_args_size = sizeof(queue_select);
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR,
"Failed to execute command of OP_DISABLE_QUEUES");
@ -758,7 +792,7 @@ iavf_switch_queue(struct iavf_adapter *adapter, uint16_t qid,
args.in_args_size = sizeof(queue_select);
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR, "Failed to execute command of %s",
on ? "OP_ENABLE_QUEUES" : "OP_DISABLE_QUEUES");
@ -800,7 +834,7 @@ iavf_enable_queues_lv(struct iavf_adapter *adapter)
args.in_args_size = len;
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR,
"Failed to execute command of OP_ENABLE_QUEUES_V2");
@ -844,7 +878,7 @@ iavf_disable_queues_lv(struct iavf_adapter *adapter)
args.in_args_size = len;
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR,
"Failed to execute command of OP_DISABLE_QUEUES_V2");
@ -890,7 +924,7 @@ iavf_switch_queue_lv(struct iavf_adapter *adapter, uint16_t qid,
args.in_args_size = len;
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR, "Failed to execute command of %s",
on ? "OP_ENABLE_QUEUES_V2" : "OP_DISABLE_QUEUES_V2");
@ -922,7 +956,7 @@ iavf_configure_rss_lut(struct iavf_adapter *adapter)
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR,
"Failed to execute command of OP_CONFIG_RSS_LUT");
@ -954,7 +988,7 @@ iavf_configure_rss_key(struct iavf_adapter *adapter)
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR,
"Failed to execute command of OP_CONFIG_RSS_KEY");
@ -1046,7 +1080,7 @@ iavf_configure_queues(struct iavf_adapter *adapter,
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR, "Failed to execute command of"
" VIRTCHNL_OP_CONFIG_VSI_QUEUES");
@ -1087,7 +1121,7 @@ iavf_config_irq_map(struct iavf_adapter *adapter)
args.in_args_size = len;
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR, "fail to execute command OP_CONFIG_IRQ_MAP");
@ -1128,7 +1162,7 @@ iavf_config_irq_map_lv(struct iavf_adapter *adapter, uint16_t num,
args.in_args_size = len;
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR, "fail to execute command OP_MAP_QUEUE_VECTOR");
@ -1188,7 +1222,7 @@ iavf_add_del_all_mac_addr(struct iavf_adapter *adapter, bool add)
args.in_args_size = len;
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR, "fail to execute command %s",
add ? "OP_ADD_ETHER_ADDRESS" :
@ -1215,7 +1249,7 @@ iavf_query_stats(struct iavf_adapter *adapter,
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR, "fail to execute command OP_GET_STATS");
*pstats = NULL;
@ -1250,7 +1284,7 @@ iavf_config_promisc(struct iavf_adapter *adapter,
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR,
@ -1290,7 +1324,7 @@ iavf_add_del_eth_addr(struct iavf_adapter *adapter, struct rte_ether_addr *addr,
args.in_args_size = sizeof(cmd_buffer);
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR, "fail to execute command %s",
add ? "OP_ADD_ETH_ADDR" : "OP_DEL_ETH_ADDR");
@ -1317,7 +1351,7 @@ iavf_add_del_vlan(struct iavf_adapter *adapter, uint16_t vlanid, bool add)
args.in_args_size = sizeof(cmd_buffer);
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR, "fail to execute command %s",
add ? "OP_ADD_VLAN" : "OP_DEL_VLAN");
@ -1344,7 +1378,7 @@ iavf_fdir_add(struct iavf_adapter *adapter,
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR, "fail to execute command OP_ADD_FDIR_FILTER");
return err;
@ -1404,7 +1438,7 @@ iavf_fdir_del(struct iavf_adapter *adapter,
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR, "fail to execute command OP_DEL_FDIR_FILTER");
return err;
@ -1451,7 +1485,7 @@ iavf_fdir_check(struct iavf_adapter *adapter,
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR, "fail to check flow direcotor rule");
return err;
@ -1492,7 +1526,7 @@ iavf_add_del_rss_cfg(struct iavf_adapter *adapter,
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR,
"Failed to execute command of %s",
@ -1515,7 +1549,7 @@ iavf_get_hena_caps(struct iavf_adapter *adapter, uint64_t *caps)
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR,
"Failed to execute command of OP_GET_RSS_HENA_CAPS");
@ -1541,7 +1575,7 @@ iavf_set_hena(struct iavf_adapter *adapter, uint64_t hena)
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR,
"Failed to execute command of OP_SET_RSS_HENA");
@ -1562,7 +1596,7 @@ iavf_get_qos_cap(struct iavf_adapter *adapter)
args.in_args_size = 0;
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR,
@ -1595,7 +1629,7 @@ int iavf_set_q_tc_map(struct rte_eth_dev *dev,
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err)
PMD_DRV_LOG(ERR, "Failed to execute command of"
" VIRTCHNL_OP_CONFIG_TC_MAP");
@ -1640,7 +1674,7 @@ iavf_add_del_mc_addr_list(struct iavf_adapter *adapter,
i * sizeof(struct virtchnl_ether_addr);
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR, "fail to execute command %s",
@ -1686,11 +1720,11 @@ iavf_request_queues(struct rte_eth_dev *dev, uint16_t num)
* before iavf_read_msg_from_pf.
*/
rte_intr_disable(pci_dev->intr_handle);
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
rte_intr_enable(pci_dev->intr_handle);
} else {
rte_eal_alarm_cancel(iavf_dev_alarm_handler, dev);
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
rte_eal_alarm_set(IAVF_ALARM_INTERVAL,
iavf_dev_alarm_handler, dev);
}
@ -1729,7 +1763,7 @@ iavf_get_max_rss_queue_region(struct iavf_adapter *adapter)
args.out_buffer = vf->aq_resp;
args.out_size = IAVF_AQ_BUF_SZ;
err = iavf_execute_vf_cmd(adapter, &args);
err = iavf_execute_vf_cmd(adapter, &args, 0);
if (err) {
PMD_DRV_LOG(ERR, "Failed to execute command of VIRTCHNL_OP_GET_MAX_RSS_QREGION");
return err;