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path: root/drivers/net/ena/base/ena_com.c
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Diffstat (limited to 'drivers/net/ena/base/ena_com.c')
-rw-r--r--drivers/net/ena/base/ena_com.c254
1 files changed, 134 insertions, 120 deletions
diff --git a/drivers/net/ena/base/ena_com.c b/drivers/net/ena/base/ena_com.c
index a21a9513..a3649d8b 100644
--- a/drivers/net/ena/base/ena_com.c
+++ b/drivers/net/ena/base/ena_com.c
@@ -42,9 +42,6 @@
#define ENA_ASYNC_QUEUE_DEPTH 4
#define ENA_ADMIN_QUEUE_DEPTH 32
-#define ENA_EXTENDED_STAT_GET_FUNCT(_funct_queue) (_funct_queue & 0xFFFF)
-#define ENA_EXTENDED_STAT_GET_QUEUE(_funct_queue) (_funct_queue >> 16)
-
#define MIN_ENA_VER (((ENA_COMMON_SPEC_VERSION_MAJOR) << \
ENA_REGS_VERSION_MAJOR_VERSION_SHIFT) \
| (ENA_COMMON_SPEC_VERSION_MINOR))
@@ -201,12 +198,16 @@ static inline void comp_ctxt_release(struct ena_com_admin_queue *queue,
static struct ena_comp_ctx *get_comp_ctxt(struct ena_com_admin_queue *queue,
u16 command_id, bool capture)
{
- ENA_ASSERT(command_id < queue->q_depth,
- "command id is larger than the queue size. cmd_id: %u queue size %d\n",
- command_id, queue->q_depth);
+ if (unlikely(command_id >= queue->q_depth)) {
+ ena_trc_err("command id is larger than the queue size. cmd_id: %u queue size %d\n",
+ command_id, queue->q_depth);
+ return NULL;
+ }
- ENA_ASSERT(!(queue->comp_ctx[command_id].occupied && capture),
- "Completion context is occupied");
+ if (unlikely(queue->comp_ctx[command_id].occupied && capture)) {
+ ena_trc_err("Completion context is occupied\n");
+ return NULL;
+ }
if (capture) {
ATOMIC32_INC(&queue->outstanding_cmds);
@@ -290,7 +291,8 @@ static inline int ena_com_init_comp_ctxt(struct ena_com_admin_queue *queue)
for (i = 0; i < queue->q_depth; i++) {
comp_ctx = get_comp_ctxt(queue, i, false);
- ENA_WAIT_EVENT_INIT(comp_ctx->wait_event);
+ if (comp_ctx)
+ ENA_WAIT_EVENT_INIT(comp_ctx->wait_event);
}
return 0;
@@ -315,15 +317,21 @@ ena_com_submit_admin_cmd(struct ena_com_admin_queue *admin_queue,
cmd_size_in_bytes,
comp,
comp_size_in_bytes);
+ if (unlikely(IS_ERR(comp_ctx)))
+ admin_queue->running_state = false;
ENA_SPINLOCK_UNLOCK(admin_queue->q_lock, flags);
return comp_ctx;
}
static int ena_com_init_io_sq(struct ena_com_dev *ena_dev,
+ struct ena_com_create_io_ctx *ctx,
struct ena_com_io_sq *io_sq)
{
size_t size;
+ int dev_node;
+
+ ENA_TOUCH(ctx);
memset(&io_sq->desc_addr, 0x0, sizeof(struct ena_com_io_desc_addr));
@@ -334,15 +342,29 @@ static int ena_com_init_io_sq(struct ena_com_dev *ena_dev,
size = io_sq->desc_entry_size * io_sq->q_depth;
- if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST)
- ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
- size,
- io_sq->desc_addr.virt_addr,
- io_sq->desc_addr.phys_addr,
- io_sq->desc_addr.mem_handle);
- else
- io_sq->desc_addr.virt_addr =
- ENA_MEM_ALLOC(ena_dev->dmadev, size);
+ if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST) {
+ ENA_MEM_ALLOC_COHERENT_NODE(ena_dev->dmadev,
+ size,
+ io_sq->desc_addr.virt_addr,
+ io_sq->desc_addr.phys_addr,
+ ctx->numa_node,
+ dev_node);
+ if (!io_sq->desc_addr.virt_addr)
+ ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
+ size,
+ io_sq->desc_addr.virt_addr,
+ io_sq->desc_addr.phys_addr,
+ io_sq->desc_addr.mem_handle);
+ } else {
+ ENA_MEM_ALLOC_NODE(ena_dev->dmadev,
+ size,
+ io_sq->desc_addr.virt_addr,
+ ctx->numa_node,
+ dev_node);
+ if (!io_sq->desc_addr.virt_addr)
+ io_sq->desc_addr.virt_addr =
+ ENA_MEM_ALLOC(ena_dev->dmadev, size);
+ }
if (!io_sq->desc_addr.virt_addr) {
ena_trc_err("memory allocation failed");
@@ -357,10 +379,13 @@ static int ena_com_init_io_sq(struct ena_com_dev *ena_dev,
}
static int ena_com_init_io_cq(struct ena_com_dev *ena_dev,
+ struct ena_com_create_io_ctx *ctx,
struct ena_com_io_cq *io_cq)
{
size_t size;
+ int prev_node;
+ ENA_TOUCH(ctx);
memset(&io_cq->cdesc_addr, 0x0, sizeof(struct ena_com_io_desc_addr));
/* Use the basic completion descriptor for Rx */
@@ -371,11 +396,18 @@ static int ena_com_init_io_cq(struct ena_com_dev *ena_dev,
size = io_cq->cdesc_entry_size_in_bytes * io_cq->q_depth;
- ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
- size,
- io_cq->cdesc_addr.virt_addr,
- io_cq->cdesc_addr.phys_addr,
- io_cq->cdesc_addr.mem_handle);
+ ENA_MEM_ALLOC_COHERENT_NODE(ena_dev->dmadev,
+ size,
+ io_cq->cdesc_addr.virt_addr,
+ io_cq->cdesc_addr.phys_addr,
+ ctx->numa_node,
+ prev_node);
+ if (!io_cq->cdesc_addr.virt_addr)
+ ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
+ size,
+ io_cq->cdesc_addr.virt_addr,
+ io_cq->cdesc_addr.phys_addr,
+ io_cq->cdesc_addr.mem_handle);
if (!io_cq->cdesc_addr.virt_addr) {
ena_trc_err("memory allocation failed");
@@ -399,6 +431,11 @@ ena_com_handle_single_admin_completion(struct ena_com_admin_queue *admin_queue,
ENA_ADMIN_ACQ_COMMON_DESC_COMMAND_ID_MASK;
comp_ctx = get_comp_ctxt(admin_queue, cmd_id, false);
+ if (unlikely(!comp_ctx)) {
+ ena_trc_err("comp_ctx is NULL. Changing the admin queue running state\n");
+ admin_queue->running_state = false;
+ return;
+ }
comp_ctx->status = ENA_CMD_COMPLETED;
comp_ctx->comp_status = cqe->acq_common_descriptor.status;
@@ -615,10 +652,12 @@ static u32 ena_com_reg_bar_read32(struct ena_com_dev *ena_dev, u16 offset)
goto err;
}
- ENA_ASSERT(read_resp->reg_off == offset,
- "Invalid MMIO read return value");
-
- ret = read_resp->reg_val;
+ if (read_resp->reg_off != offset) {
+ ena_trc_err("reading failed for wrong offset value");
+ ret = ENA_MMIO_READ_TIMEOUT;
+ } else {
+ ret = read_resp->reg_val;
+ }
err:
ENA_SPINLOCK_UNLOCK(mmio_read->lock, flags);
@@ -838,7 +877,7 @@ static int ena_com_hash_key_allocate(struct ena_com_dev *ena_dev)
return 0;
}
-static int ena_com_hash_key_destroy(struct ena_com_dev *ena_dev)
+static void ena_com_hash_key_destroy(struct ena_com_dev *ena_dev)
{
struct ena_rss *rss = &ena_dev->rss;
@@ -849,7 +888,6 @@ static int ena_com_hash_key_destroy(struct ena_com_dev *ena_dev)
rss->hash_key_dma_addr,
rss->hash_key_mem_handle);
rss->hash_key = NULL;
- return 0;
}
static int ena_com_hash_ctrl_init(struct ena_com_dev *ena_dev)
@@ -862,10 +900,13 @@ static int ena_com_hash_ctrl_init(struct ena_com_dev *ena_dev)
rss->hash_ctrl_dma_addr,
rss->hash_ctrl_mem_handle);
+ if (unlikely(!rss->hash_ctrl))
+ return ENA_COM_NO_MEM;
+
return 0;
}
-static int ena_com_hash_ctrl_destroy(struct ena_com_dev *ena_dev)
+static void ena_com_hash_ctrl_destroy(struct ena_com_dev *ena_dev)
{
struct ena_rss *rss = &ena_dev->rss;
@@ -876,8 +917,6 @@ static int ena_com_hash_ctrl_destroy(struct ena_com_dev *ena_dev)
rss->hash_ctrl_dma_addr,
rss->hash_ctrl_mem_handle);
rss->hash_ctrl = NULL;
-
- return 0;
}
static int ena_com_indirect_table_allocate(struct ena_com_dev *ena_dev,
@@ -902,7 +941,7 @@ static int ena_com_indirect_table_allocate(struct ena_com_dev *ena_dev,
return ENA_COM_INVAL;
}
- tbl_size = (1 << log_size) *
+ tbl_size = (1ULL << log_size) *
sizeof(struct ena_admin_rss_ind_table_entry);
ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
@@ -913,7 +952,7 @@ static int ena_com_indirect_table_allocate(struct ena_com_dev *ena_dev,
if (unlikely(!rss->rss_ind_tbl))
goto mem_err1;
- tbl_size = (1 << log_size) * sizeof(u16);
+ tbl_size = (1ULL << log_size) * sizeof(u16);
rss->host_rss_ind_tbl =
ENA_MEM_ALLOC(ena_dev->dmadev, tbl_size);
if (unlikely(!rss->host_rss_ind_tbl))
@@ -924,7 +963,7 @@ static int ena_com_indirect_table_allocate(struct ena_com_dev *ena_dev,
return 0;
mem_err2:
- tbl_size = (1 << log_size) *
+ tbl_size = (1ULL << log_size) *
sizeof(struct ena_admin_rss_ind_table_entry);
ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
@@ -938,10 +977,10 @@ mem_err1:
return ENA_COM_NO_MEM;
}
-static int ena_com_indirect_table_destroy(struct ena_com_dev *ena_dev)
+static void ena_com_indirect_table_destroy(struct ena_com_dev *ena_dev)
{
struct ena_rss *rss = &ena_dev->rss;
- size_t tbl_size = (1 << rss->tbl_log_size) *
+ size_t tbl_size = (1ULL << rss->tbl_log_size) *
sizeof(struct ena_admin_rss_ind_table_entry);
if (rss->rss_ind_tbl)
@@ -955,8 +994,6 @@ static int ena_com_indirect_table_destroy(struct ena_com_dev *ena_dev)
if (rss->host_rss_ind_tbl)
ENA_MEM_FREE(ena_dev->dmadev, rss->host_rss_ind_tbl);
rss->host_rss_ind_tbl = NULL;
-
- return 0;
}
static int ena_com_create_io_sq(struct ena_com_dev *ena_dev,
@@ -1059,17 +1096,18 @@ static int ena_com_ind_tbl_convert_to_device(struct ena_com_dev *ena_dev)
static int ena_com_ind_tbl_convert_from_device(struct ena_com_dev *ena_dev)
{
- u16 dev_idx_to_host_tbl[ENA_TOTAL_NUM_QUEUES] = { -1 };
+ u16 dev_idx_to_host_tbl[ENA_TOTAL_NUM_QUEUES] = { (u16)-1 };
struct ena_rss *rss = &ena_dev->rss;
- u16 idx, i;
+ u8 idx;
+ u16 i;
for (i = 0; i < ENA_TOTAL_NUM_QUEUES; i++)
dev_idx_to_host_tbl[ena_dev->io_sq_queues[i].idx] = i;
for (i = 0; i < 1 << rss->tbl_log_size; i++) {
- idx = rss->rss_ind_tbl[i].cq_idx;
- if (idx > ENA_TOTAL_NUM_QUEUES)
+ if (rss->rss_ind_tbl[i].cq_idx > ENA_TOTAL_NUM_QUEUES)
return ENA_COM_INVAL;
+ idx = (u8)rss->rss_ind_tbl[i].cq_idx;
if (dev_idx_to_host_tbl[idx] > ENA_TOTAL_NUM_QUEUES)
return ENA_COM_INVAL;
@@ -1097,7 +1135,7 @@ static int ena_com_init_interrupt_moderation_table(struct ena_com_dev *ena_dev)
static void
ena_com_update_intr_delay_resolution(struct ena_com_dev *ena_dev,
- unsigned int intr_delay_resolution)
+ u16 intr_delay_resolution)
{
struct ena_intr_moder_entry *intr_moder_tbl = ena_dev->intr_moder_tbl;
unsigned int i;
@@ -1189,23 +1227,19 @@ int ena_com_create_io_cq(struct ena_com_dev *ena_dev,
}
io_cq->idx = cmd_completion.cq_idx;
- io_cq->db_addr = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
- cmd_completion.cq_doorbell_offset);
-
- if (io_cq->q_depth != cmd_completion.cq_actual_depth) {
- ena_trc_err("completion actual queue size (%d) is differ from requested size (%d)\n",
- cmd_completion.cq_actual_depth, io_cq->q_depth);
- ena_com_destroy_io_cq(ena_dev, io_cq);
- return ENA_COM_NO_SPACE;
- }
io_cq->unmask_reg = (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
- cmd_completion.cq_interrupt_unmask_register);
+ cmd_completion.cq_interrupt_unmask_register_offset);
- if (cmd_completion.cq_head_db_offset)
+ if (cmd_completion.cq_head_db_register_offset)
io_cq->cq_head_db_reg =
(u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
- cmd_completion.cq_head_db_offset);
+ cmd_completion.cq_head_db_register_offset);
+
+ if (cmd_completion.numa_node_register_offset)
+ io_cq->numa_node_cfg_reg =
+ (u32 __iomem *)((uintptr_t)ena_dev->reg_bar +
+ cmd_completion.numa_node_register_offset);
ena_trc_dbg("created cq[%u], depth[%u]\n", io_cq->idx, io_cq->q_depth);
@@ -1239,6 +1273,9 @@ void ena_com_abort_admin_commands(struct ena_com_dev *ena_dev)
for (i = 0; i < admin_queue->q_depth; i++) {
comp_ctx = get_comp_ctxt(admin_queue, i, false);
+ if (unlikely(!comp_ctx))
+ break;
+
comp_ctx->status = ENA_CMD_ABORTED;
ENA_WAIT_EVENT_SIGNAL(comp_ctx->wait_event);
@@ -1304,7 +1341,7 @@ void ena_com_admin_aenq_enable(struct ena_com_dev *ena_dev)
{
u16 depth = ena_dev->aenq.q_depth;
- ENA_ASSERT(ena_dev->aenq.head == depth, "Invliad AENQ state\n");
+ ENA_ASSERT(ena_dev->aenq.head == depth, "Invalid AENQ state\n");
/* Init head_db to mark that all entries in the queue
* are initially available
@@ -1556,7 +1593,7 @@ int ena_com_admin_init(struct ena_com_dev *ena_dev,
if (!(dev_sts & ENA_REGS_DEV_STS_READY_MASK)) {
ena_trc_err("Device isn't ready, abort com init\n");
- return -1;
+ return ENA_COM_NO_DEVICE;
}
admin_queue->q_depth = ENA_ADMIN_QUEUE_DEPTH;
@@ -1631,50 +1668,46 @@ error:
}
int ena_com_create_io_queue(struct ena_com_dev *ena_dev,
- u16 qid,
- enum queue_direction direction,
- enum ena_admin_placement_policy_type mem_queue_type,
- u32 msix_vector,
- u16 queue_size)
+ struct ena_com_create_io_ctx *ctx)
{
struct ena_com_io_sq *io_sq;
struct ena_com_io_cq *io_cq;
int ret = 0;
- if (qid >= ENA_TOTAL_NUM_QUEUES) {
+ if (ctx->qid >= ENA_TOTAL_NUM_QUEUES) {
ena_trc_err("Qid (%d) is bigger than max num of queues (%d)\n",
- qid, ENA_TOTAL_NUM_QUEUES);
+ ctx->qid, ENA_TOTAL_NUM_QUEUES);
return ENA_COM_INVAL;
}
- io_sq = &ena_dev->io_sq_queues[qid];
- io_cq = &ena_dev->io_cq_queues[qid];
+ io_sq = &ena_dev->io_sq_queues[ctx->qid];
+ io_cq = &ena_dev->io_cq_queues[ctx->qid];
memset(io_sq, 0x0, sizeof(struct ena_com_io_sq));
memset(io_cq, 0x0, sizeof(struct ena_com_io_cq));
/* Init CQ */
- io_cq->q_depth = queue_size;
- io_cq->direction = direction;
- io_cq->qid = qid;
+ io_cq->q_depth = ctx->queue_size;
+ io_cq->direction = ctx->direction;
+ io_cq->qid = ctx->qid;
- io_cq->msix_vector = msix_vector;
+ io_cq->msix_vector = ctx->msix_vector;
- io_sq->q_depth = queue_size;
- io_sq->direction = direction;
- io_sq->qid = qid;
+ io_sq->q_depth = ctx->queue_size;
+ io_sq->direction = ctx->direction;
+ io_sq->qid = ctx->qid;
- io_sq->mem_queue_type = mem_queue_type;
+ io_sq->mem_queue_type = ctx->mem_queue_type;
- if (direction == ENA_COM_IO_QUEUE_DIRECTION_TX)
+ if (ctx->direction == ENA_COM_IO_QUEUE_DIRECTION_TX)
/* header length is limited to 8 bits */
io_sq->tx_max_header_size =
- ENA_MIN16(ena_dev->tx_max_header_size, SZ_256);
+ ENA_MIN32(ena_dev->tx_max_header_size, SZ_256);
- ret = ena_com_init_io_sq(ena_dev, io_sq);
+ ret = ena_com_init_io_sq(ena_dev, ctx, io_sq);
if (ret)
goto error;
- ret = ena_com_init_io_cq(ena_dev, io_cq);
+ ret = ena_com_init_io_cq(ena_dev, ctx, io_cq);
if (ret)
goto error;
@@ -1840,22 +1873,6 @@ void ena_com_aenq_intr_handler(struct ena_com_dev *dev, void *data)
+ ENA_REGS_AENQ_HEAD_DB_OFF);
}
-/* Sets the function Idx and Queue Idx to be used for
- * get full statistics feature
- */
-int ena_com_extended_stats_set_func_queue(struct ena_com_dev *ena_dev,
- u32 func_queue)
-{
- /* Function & Queue is acquired from user in the following format :
- * Bottom Half word: funct
- * Top Half Word: queue
- */
- ena_dev->stats_func = ENA_EXTENDED_STAT_GET_FUNCT(func_queue);
- ena_dev->stats_queue = ENA_EXTENDED_STAT_GET_QUEUE(func_queue);
-
- return 0;
-}
-
int ena_com_dev_reset(struct ena_com_dev *ena_dev)
{
u32 stat, timeout, cap, reset_val;
@@ -2195,7 +2212,7 @@ int ena_com_get_hash_function(struct ena_com_dev *ena_dev,
*func = rss->hash_func;
if (key)
- memcpy(key, hash_key->key, hash_key->keys_num << 2);
+ memcpy(key, hash_key->key, (size_t)(hash_key->keys_num) << 2);
return 0;
}
@@ -2337,7 +2354,7 @@ int ena_com_fill_hash_ctrl(struct ena_com_dev *ena_dev,
u16 supported_fields;
int rc;
- if (proto > ENA_ADMIN_RSS_PROTO_NUM) {
+ if (proto >= ENA_ADMIN_RSS_PROTO_NUM) {
ena_trc_err("Invalid proto num (%u)\n", proto);
return ENA_COM_INVAL;
}
@@ -2420,7 +2437,7 @@ int ena_com_indirect_table_set(struct ena_com_dev *ena_dev)
return ret;
}
- cmd.control_buffer.length = (1 << rss->tbl_log_size) *
+ cmd.control_buffer.length = (1ULL << rss->tbl_log_size) *
sizeof(struct ena_admin_rss_ind_table_entry);
ret = ena_com_execute_admin_command(admin_queue,
@@ -2444,7 +2461,7 @@ int ena_com_indirect_table_get(struct ena_com_dev *ena_dev, u32 *ind_tbl)
u32 tbl_size;
int i, rc;
- tbl_size = (1 << rss->tbl_log_size) *
+ tbl_size = (1ULL << rss->tbl_log_size) *
sizeof(struct ena_admin_rss_ind_table_entry);
rc = ena_com_get_feature_ex(ena_dev, &get_resp,
@@ -2496,22 +2513,18 @@ err_indr_tbl:
return rc;
}
-int ena_com_rss_destroy(struct ena_com_dev *ena_dev)
+void ena_com_rss_destroy(struct ena_com_dev *ena_dev)
{
ena_com_indirect_table_destroy(ena_dev);
ena_com_hash_key_destroy(ena_dev);
ena_com_hash_ctrl_destroy(ena_dev);
memset(&ena_dev->rss, 0x0, sizeof(ena_dev->rss));
-
- return 0;
}
-int ena_com_allocate_host_attribute(struct ena_com_dev *ena_dev,
- u32 debug_area_size)
+int ena_com_allocate_host_info(struct ena_com_dev *ena_dev)
{
struct ena_host_attribute *host_attr = &ena_dev->host_attr;
- int rc;
ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
SZ_4K,
@@ -2521,33 +2534,29 @@ int ena_com_allocate_host_attribute(struct ena_com_dev *ena_dev,
if (unlikely(!host_attr->host_info))
return ENA_COM_NO_MEM;
- if (debug_area_size) {
+ return 0;
+}
+
+int ena_com_allocate_debug_area(struct ena_com_dev *ena_dev,
+ u32 debug_area_size) {
+ struct ena_host_attribute *host_attr = &ena_dev->host_attr;
+
ENA_MEM_ALLOC_COHERENT(ena_dev->dmadev,
debug_area_size,
host_attr->debug_area_virt_addr,
host_attr->debug_area_dma_addr,
host_attr->debug_area_dma_handle);
if (unlikely(!host_attr->debug_area_virt_addr)) {
- rc = ENA_COM_NO_MEM;
- goto err;
- }
+ host_attr->debug_area_size = 0;
+ return ENA_COM_NO_MEM;
}
host_attr->debug_area_size = debug_area_size;
return 0;
-err:
-
- ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
- SZ_4K,
- host_attr->host_info,
- host_attr->host_info_dma_addr,
- host_attr->host_info_dma_handle);
- host_attr->host_info = NULL;
- return rc;
}
-void ena_com_delete_host_attribute(struct ena_com_dev *ena_dev)
+void ena_com_delete_host_info(struct ena_com_dev *ena_dev)
{
struct ena_host_attribute *host_attr = &ena_dev->host_attr;
@@ -2559,6 +2568,11 @@ void ena_com_delete_host_attribute(struct ena_com_dev *ena_dev)
host_attr->host_info_dma_handle);
host_attr->host_info = NULL;
}
+}
+
+void ena_com_delete_debug_area(struct ena_com_dev *ena_dev)
+{
+ struct ena_host_attribute *host_attr = &ena_dev->host_attr;
if (host_attr->debug_area_virt_addr) {
ENA_MEM_FREE_COHERENT(ena_dev->dmadev,
@@ -2677,7 +2691,7 @@ void ena_com_destroy_interrupt_moderation(struct ena_com_dev *ena_dev)
int ena_com_init_interrupt_moderation(struct ena_com_dev *ena_dev)
{
struct ena_admin_get_feat_resp get_resp;
- u32 delay_resolution;
+ u16 delay_resolution;
int rc;
rc = ena_com_get_feature(ena_dev, &get_resp,