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Commit 38005ca8 authored by Arthur Kiyanovski's avatar Arthur Kiyanovski Committed by David S. Miller
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net: ena: add functions for handling Low Latency Queues in ena_netdev 

This patch includes all code changes necessary in ena_netdev to enable
packet sending via the LLQ placemnt mode.
Signed-off-by: default avatarArthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 689b2bda
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Showing with 251 additions and 143 deletions
drivers/net/ethernet/amazon/ena/ena_ethtool.c
View file @ 38005ca8
......@@ -81,6 +81,7 @@ static const struct ena_stats ena_stats_tx_strings[] = {
ENA_STAT_TX_ENTRY(doorbells),
ENA_STAT_TX_ENTRY(prepare_ctx_err),
ENA_STAT_TX_ENTRY(bad_req_id),
ENA_STAT_TX_ENTRY(llq_buffer_copy),
ENA_STAT_TX_ENTRY(missed_tx),
};
......
drivers/net/ethernet/amazon/ena/ena_netdev.c
View file @ 38005ca8
......@@ -237,6 +237,17 @@ static int ena_setup_tx_resources(struct ena_adapter *adapter, int qid)
}
}
size = tx_ring->tx_max_header_size;
tx_ring->push_buf_intermediate_buf = vzalloc_node(size, node);
if (!tx_ring->push_buf_intermediate_buf) {
tx_ring->push_buf_intermediate_buf = vzalloc(size);
if (!tx_ring->push_buf_intermediate_buf) {
vfree(tx_ring->tx_buffer_info);
vfree(tx_ring->free_tx_ids);
return -ENOMEM;
}
}
/* Req id ring for TX out of order completions */
for (i = 0; i < tx_ring->ring_size; i++)
tx_ring->free_tx_ids[i] = i;
......@@ -265,6 +276,9 @@ static void ena_free_tx_resources(struct ena_adapter *adapter, int qid)
vfree(tx_ring->free_tx_ids);
tx_ring->free_tx_ids = NULL;
vfree(tx_ring->push_buf_intermediate_buf);
tx_ring->push_buf_intermediate_buf = NULL;
}
/* ena_setup_all_tx_resources - allocate I/O Tx queues resources for All queues
......@@ -602,6 +616,36 @@ static void ena_free_all_rx_bufs(struct ena_adapter *adapter)
ena_free_rx_bufs(adapter, i);
}
static inline void ena_unmap_tx_skb(struct ena_ring *tx_ring,
struct ena_tx_buffer *tx_info)
{
struct ena_com_buf *ena_buf;
u32 cnt;
int i;
ena_buf = tx_info->bufs;
cnt = tx_info->num_of_bufs;
if (unlikely(!cnt))
return;
if (tx_info->map_linear_data) {
dma_unmap_single(tx_ring->dev,
dma_unmap_addr(ena_buf, paddr),
dma_unmap_len(ena_buf, len),
DMA_TO_DEVICE);
ena_buf++;
cnt--;
}
/* unmap remaining mapped pages */
for (i = 0; i < cnt; i++) {
dma_unmap_page(tx_ring->dev, dma_unmap_addr(ena_buf, paddr),
dma_unmap_len(ena_buf, len), DMA_TO_DEVICE);
ena_buf++;
}
}
/* ena_free_tx_bufs - Free Tx Buffers per Queue
* @tx_ring: TX ring for which buffers be freed
*/
......@@ -612,9 +656,6 @@ static void ena_free_tx_bufs(struct ena_ring *tx_ring)
for (i = 0; i < tx_ring->ring_size; i++) {
struct ena_tx_buffer *tx_info = &tx_ring->tx_buffer_info[i];
struct ena_com_buf *ena_buf;
int nr_frags;
int j;
if (!tx_info->skb)
continue;
......@@ -630,21 +671,7 @@ static void ena_free_tx_bufs(struct ena_ring *tx_ring)
tx_ring->qid, i);
}
ena_buf = tx_info->bufs;
dma_unmap_single(tx_ring->dev,
ena_buf->paddr,
ena_buf->len,
DMA_TO_DEVICE);
/* unmap remaining mapped pages */
nr_frags = tx_info->num_of_bufs - 1;
for (j = 0; j < nr_frags; j++) {
ena_buf++;
dma_unmap_page(tx_ring->dev,
ena_buf->paddr,
ena_buf->len,
DMA_TO_DEVICE);
}
ena_unmap_tx_skb(tx_ring, tx_info);
dev_kfree_skb_any(tx_info->skb);
}
......@@ -735,8 +762,6 @@ static int ena_clean_tx_irq(struct ena_ring *tx_ring, u32 budget)
while (tx_pkts < budget) {
struct ena_tx_buffer *tx_info;
struct sk_buff *skb;
struct ena_com_buf *ena_buf;
int i, nr_frags;
rc = ena_com_tx_comp_req_id_get(tx_ring->ena_com_io_cq,
&req_id);
......@@ -756,24 +781,7 @@ static int ena_clean_tx_irq(struct ena_ring *tx_ring, u32 budget)
tx_info->skb = NULL;
tx_info->last_jiffies = 0;
if (likely(tx_info->num_of_bufs != 0)) {
ena_buf = tx_info->bufs;
dma_unmap_single(tx_ring->dev,
dma_unmap_addr(ena_buf, paddr),
dma_unmap_len(ena_buf, len),
DMA_TO_DEVICE);
/* unmap remaining mapped pages */
nr_frags = tx_info->num_of_bufs - 1;
for (i = 0; i < nr_frags; i++) {
ena_buf++;
dma_unmap_page(tx_ring->dev,
dma_unmap_addr(ena_buf, paddr),
dma_unmap_len(ena_buf, len),
DMA_TO_DEVICE);
}
}
ena_unmap_tx_skb(tx_ring, tx_info);
netif_dbg(tx_ring->adapter, tx_done, tx_ring->netdev,
"tx_poll: q %d skb %p completed\n", tx_ring->qid,
......@@ -1300,7 +1308,6 @@ static int ena_enable_msix(struct ena_adapter *adapter, int num_queues)
/* Reserved the max msix vectors we might need */
msix_vecs = ENA_MAX_MSIX_VEC(num_queues);
netif_dbg(adapter, probe, adapter->netdev,
"trying to enable MSI-X, vectors %d\n", msix_vecs);
......@@ -1593,7 +1600,7 @@ static int ena_up_complete(struct ena_adapter *adapter)
static int ena_create_io_tx_queue(struct ena_adapter *adapter, int qid)
{
struct ena_com_create_io_ctx ctx = { 0 };
struct ena_com_create_io_ctx ctx;
struct ena_com_dev *ena_dev;
struct ena_ring *tx_ring;
u32 msix_vector;
......@@ -1606,6 +1613,8 @@ static int ena_create_io_tx_queue(struct ena_adapter *adapter, int qid)
msix_vector = ENA_IO_IRQ_IDX(qid);
ena_qid = ENA_IO_TXQ_IDX(qid);
memset(&ctx, 0x0, sizeof(ctx));
ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX;
ctx.qid = ena_qid;
ctx.mem_queue_type = ena_dev->tx_mem_queue_type;
......@@ -1659,7 +1668,7 @@ static int ena_create_all_io_tx_queues(struct ena_adapter *adapter)
static int ena_create_io_rx_queue(struct ena_adapter *adapter, int qid)
{
struct ena_com_dev *ena_dev;
struct ena_com_create_io_ctx ctx = { 0 };
struct ena_com_create_io_ctx ctx;
struct ena_ring *rx_ring;
u32 msix_vector;
u16 ena_qid;
......@@ -1671,6 +1680,8 @@ static int ena_create_io_rx_queue(struct ena_adapter *adapter, int qid)
msix_vector = ENA_IO_IRQ_IDX(qid);
ena_qid = ENA_IO_RXQ_IDX(qid);
memset(&ctx, 0x0, sizeof(ctx));
ctx.qid = ena_qid;
ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX;
ctx.mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
......@@ -1981,73 +1992,70 @@ static int ena_check_and_linearize_skb(struct ena_ring *tx_ring,
return rc;
}
/* Called with netif_tx_lock. */
static netdev_tx_t ena_start_xmit(struct sk_buff *skb, struct net_device *dev)
static int ena_tx_map_skb(struct ena_ring *tx_ring,
struct ena_tx_buffer *tx_info,
struct sk_buff *skb,
void **push_hdr,
u16 *header_len)
{
struct ena_adapter *adapter = netdev_priv(dev);
struct ena_tx_buffer *tx_info;
struct ena_com_tx_ctx ena_tx_ctx;
struct ena_ring *tx_ring;
struct netdev_queue *txq;
struct ena_adapter *adapter = tx_ring->adapter;
struct ena_com_buf *ena_buf;
void *push_hdr;
u32 len, last_frag;
u16 next_to_use;
u16 req_id;
u16 push_len;
u16 header_len;
dma_addr_t dma;
int qid, rc, nb_hw_desc;
int i = -1;
u32 skb_head_len, frag_len, last_frag;
u16 push_len = 0;
u16 delta = 0;
int i = 0;
netif_dbg(adapter, tx_queued, dev, "%s skb %p\n", __func__, skb);
/* Determine which tx ring we will be placed on */
qid = skb_get_queue_mapping(skb);
tx_ring = &adapter->tx_ring[qid];
txq = netdev_get_tx_queue(dev, qid);
rc = ena_check_and_linearize_skb(tx_ring, skb);
if (unlikely(rc))
goto error_drop_packet;
skb_tx_timestamp(skb);
len = skb_headlen(skb);
next_to_use = tx_ring->next_to_use;
req_id = tx_ring->free_tx_ids[next_to_use];
tx_info = &tx_ring->tx_buffer_info[req_id];
tx_info->num_of_bufs = 0;
WARN(tx_info->skb, "SKB isn't NULL req_id %d\n", req_id);
ena_buf = tx_info->bufs;
skb_head_len = skb_headlen(skb);
tx_info->skb = skb;
ena_buf = tx_info->bufs;
if (tx_ring->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
/* prepared the push buffer */
push_len = min_t(u32, len, tx_ring->tx_max_header_size);
header_len = push_len;
push_hdr = skb->data;
/* When the device is LLQ mode, the driver will copy
* the header into the device memory space.
* the ena_com layer assume the header is in a linear
* memory space.
* This assumption might be wrong since part of the header
* can be in the fragmented buffers.
* Use skb_header_pointer to make sure the header is in a
* linear memory space.
*/
push_len = min_t(u32, skb->len, tx_ring->tx_max_header_size);
*push_hdr = skb_header_pointer(skb, 0, push_len,
tx_ring->push_buf_intermediate_buf);
*header_len = push_len;
if (unlikely(skb->data != *push_hdr)) {
u64_stats_update_begin(&tx_ring->syncp);
tx_ring->tx_stats.llq_buffer_copy++;
u64_stats_update_end(&tx_ring->syncp);
delta = push_len - skb_head_len;
}
} else {
push_len = 0;
header_len = min_t(u32, len, tx_ring->tx_max_header_size);
push_hdr = NULL;
*push_hdr = NULL;
*header_len = min_t(u32, skb_head_len,
tx_ring->tx_max_header_size);
}
netif_dbg(adapter, tx_queued, dev,
netif_dbg(adapter, tx_queued, adapter->netdev,
"skb: %p header_buf->vaddr: %p push_len: %d\n", skb,
push_hdr, push_len);
*push_hdr, push_len);
if (len > push_len) {
if (skb_head_len > push_len) {
dma = dma_map_single(tx_ring->dev, skb->data + push_len,
len - push_len, DMA_TO_DEVICE);
if (dma_mapping_error(tx_ring->dev, dma))
skb_head_len - push_len, DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(tx_ring->dev, dma)))
goto error_report_dma_error;
ena_buf->paddr = dma;
ena_buf->len = len - push_len;
ena_buf->len = skb_head_len - push_len;
ena_buf++;
tx_info->num_of_bufs++;
tx_info->map_linear_data = 1;
} else {
tx_info->map_linear_data = 0;
}
last_frag = skb_shinfo(skb)->nr_frags;
......@@ -2055,18 +2063,75 @@ static netdev_tx_t ena_start_xmit(struct sk_buff *skb, struct net_device *dev)
for (i = 0; i < last_frag; i++) {
const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
len = skb_frag_size(frag);
dma = skb_frag_dma_map(tx_ring->dev, frag, 0, len,
DMA_TO_DEVICE);
if (dma_mapping_error(tx_ring->dev, dma))
frag_len = skb_frag_size(frag);
if (unlikely(delta >= frag_len)) {
delta -= frag_len;
continue;
}
dma = skb_frag_dma_map(tx_ring->dev, frag, delta,
frag_len - delta, DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(tx_ring->dev, dma)))
goto error_report_dma_error;
ena_buf->paddr = dma;
ena_buf->len = len;
ena_buf->len = frag_len - delta;
ena_buf++;
tx_info->num_of_bufs++;
delta = 0;
}
tx_info->num_of_bufs += last_frag;
return 0;
error_report_dma_error:
u64_stats_update_begin(&tx_ring->syncp);
tx_ring->tx_stats.dma_mapping_err++;
u64_stats_update_end(&tx_ring->syncp);
netdev_warn(adapter->netdev, "failed to map skb\n");
tx_info->skb = NULL;
tx_info->num_of_bufs += i;
ena_unmap_tx_skb(tx_ring, tx_info);
return -EINVAL;
}
/* Called with netif_tx_lock. */
static netdev_tx_t ena_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ena_adapter *adapter = netdev_priv(dev);
struct ena_tx_buffer *tx_info;
struct ena_com_tx_ctx ena_tx_ctx;
struct ena_ring *tx_ring;
struct netdev_queue *txq;
void *push_hdr;
u16 next_to_use, req_id, header_len;
int qid, rc, nb_hw_desc;
netif_dbg(adapter, tx_queued, dev, "%s skb %p\n", __func__, skb);
/* Determine which tx ring we will be placed on */
qid = skb_get_queue_mapping(skb);
tx_ring = &adapter->tx_ring[qid];
txq = netdev_get_tx_queue(dev, qid);
rc = ena_check_and_linearize_skb(tx_ring, skb);
if (unlikely(rc))
goto error_drop_packet;
skb_tx_timestamp(skb);
next_to_use = tx_ring->next_to_use;
req_id = tx_ring->free_tx_ids[next_to_use];
tx_info = &tx_ring->tx_buffer_info[req_id];
tx_info->num_of_bufs = 0;
WARN(tx_info->skb, "SKB isn't NULL req_id %d\n", req_id);
rc = ena_tx_map_skb(tx_ring, tx_info, skb, &push_hdr, &header_len);
if (unlikely(rc))
goto error_drop_packet;
memset(&ena_tx_ctx, 0x0, sizeof(struct ena_com_tx_ctx));
ena_tx_ctx.ena_bufs = tx_info->bufs;
......@@ -2082,14 +2147,22 @@ static netdev_tx_t ena_start_xmit(struct sk_buff *skb, struct net_device *dev)
rc = ena_com_prepare_tx(tx_ring->ena_com_io_sq, &ena_tx_ctx,
&nb_hw_desc);
/* ena_com_prepare_tx() can't fail due to overflow of tx queue,
* since the number of free descriptors in the queue is checked
* after sending the previous packet. In case there isn't enough
* space in the queue for the next packet, it is stopped
* until there is again enough available space in the queue.
* All other failure reasons of ena_com_prepare_tx() are fatal
* and therefore require a device reset.
*/
if (unlikely(rc)) {
netif_err(adapter, tx_queued, dev,
"failed to prepare tx bufs\n");
u64_stats_update_begin(&tx_ring->syncp);
tx_ring->tx_stats.queue_stop++;
tx_ring->tx_stats.prepare_ctx_err++;
u64_stats_update_end(&tx_ring->syncp);
netif_tx_stop_queue(txq);
adapter->reset_reason = ENA_REGS_RESET_DRIVER_INVALID_STATE;
set_bit(ENA_FLAG_TRIGGER_RESET, &adapter->flags);
goto error_unmap_dma;
}
......@@ -2152,35 +2225,11 @@ static netdev_tx_t ena_start_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
error_report_dma_error:
u64_stats_update_begin(&tx_ring->syncp);
tx_ring->tx_stats.dma_mapping_err++;
u64_stats_update_end(&tx_ring->syncp);
netdev_warn(adapter->netdev, "failed to map skb\n");
tx_info->skb = NULL;
error_unmap_dma:
if (i >= 0) {
/* save value of frag that failed */
last_frag = i;
/* start back at beginning and unmap skb */
ena_unmap_tx_skb(tx_ring, tx_info);
tx_info->skb = NULL;
ena_buf = tx_info->bufs;
dma_unmap_single(tx_ring->dev, dma_unmap_addr(ena_buf, paddr),
dma_unmap_len(ena_buf, len), DMA_TO_DEVICE);
/* unmap remaining mapped pages */
for (i = 0; i < last_frag; i++) {
ena_buf++;
dma_unmap_page(tx_ring->dev, dma_unmap_addr(ena_buf, paddr),
dma_unmap_len(ena_buf, len), DMA_TO_DEVICE);
}
}
error_drop_packet:
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
......@@ -2616,7 +2665,9 @@ static int ena_restore_device(struct ena_adapter *adapter)
set_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags);
mod_timer(&adapter->timer_service, round_jiffies(jiffies + HZ));
dev_err(&pdev->dev, "Device reset completed successfully\n");
dev_err(&pdev->dev,
"Device reset completed successfully, Driver info: %s\n",
version);
return rc;
err_disable_msix:
......@@ -2979,18 +3030,52 @@ static int ena_calc_io_queue_num(struct pci_dev *pdev,
return io_queue_num;
}
static void ena_set_push_mode(struct pci_dev *pdev, struct ena_com_dev *ena_dev,
struct ena_com_dev_get_features_ctx *get_feat_ctx)
static int ena_set_queues_placement_policy(struct pci_dev *pdev,
struct ena_com_dev *ena_dev,
struct ena_admin_feature_llq_desc *llq,
struct ena_llq_configurations *llq_default_configurations)
{
bool has_mem_bar;
int rc;
u32 llq_feature_mask;
llq_feature_mask = 1 << ENA_ADMIN_LLQ;
if (!(ena_dev->supported_features & llq_feature_mask)) {
dev_err(&pdev->dev,
"LLQ is not supported Fallback to host mode policy.\n");
ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
return 0;
}
has_mem_bar = pci_select_bars(pdev, IORESOURCE_MEM) & BIT(ENA_MEM_BAR);
/* Enable push mode if device supports LLQ */
if (has_mem_bar && get_feat_ctx->max_queues.max_legacy_llq_num > 0)
ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_DEV;
else
rc = ena_com_config_dev_mode(ena_dev, llq, llq_default_configurations);
if (unlikely(rc)) {
dev_err(&pdev->dev,
"Failed to configure the device mode. Fallback to host mode policy.\n");
ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
return 0;
}
/* Nothing to config, exit */
if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST)
return 0;
if (!has_mem_bar) {
dev_err(&pdev->dev,
"ENA device does not expose LLQ bar. Fallback to host mode policy.\n");
ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST;
return 0;
}
ena_dev->mem_bar = devm_ioremap_wc(&pdev->dev,
pci_resource_start(pdev, ENA_MEM_BAR),
pci_resource_len(pdev, ENA_MEM_BAR));
if (!ena_dev->mem_bar)
return -EFAULT;
return 0;
}
static void ena_set_dev_offloads(struct ena_com_dev_get_features_ctx *feat,
......@@ -3115,6 +3200,15 @@ static void ena_release_bars(struct ena_com_dev *ena_dev, struct pci_dev *pdev)
pci_release_selected_regions(pdev, release_bars);
}
static inline void set_default_llq_configurations(struct ena_llq_configurations *llq_config)
{
llq_config->llq_header_location = ENA_ADMIN_INLINE_HEADER;
llq_config->llq_ring_entry_size = ENA_ADMIN_LIST_ENTRY_SIZE_128B;
llq_config->llq_stride_ctrl = ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY;
llq_config->llq_num_decs_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2;
llq_config->llq_ring_entry_size_value = 128;
}
static int ena_calc_queue_size(struct pci_dev *pdev,
struct ena_com_dev *ena_dev,
u16 *max_tx_sgl_size,
......@@ -3163,7 +3257,9 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
static int version_printed;
struct net_device *netdev;
struct ena_adapter *adapter;
struct ena_llq_configurations llq_config;
struct ena_com_dev *ena_dev = NULL;
char *queue_type_str;
static int adapters_found;
int io_queue_num, bars, rc;
int queue_size;
......@@ -3217,17 +3313,14 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_free_region;
}
ena_set_push_mode(pdev, ena_dev, &get_feat_ctx);
set_default_llq_configurations(&llq_config);
if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {
ena_dev->mem_bar = devm_ioremap_wc(&pdev->dev,
pci_resource_start(pdev, ENA_MEM_BAR),
pci_resource_len(pdev, ENA_MEM_BAR));
if (!ena_dev->mem_bar) {
rc = -EFAULT;
rc = ena_set_queues_placement_policy(pdev, ena_dev, &get_feat_ctx.llq,
&llq_config);
if (rc) {
dev_err(&pdev->dev, "ena device init failed\n");
goto err_device_destroy;
}
}
/* initial Tx interrupt delay, Assumes 1 usec granularity.
* Updated during device initialization with the real granularity
......@@ -3241,8 +3334,10 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_device_destroy;
}
dev_info(&pdev->dev, "creating %d io queues. queue size: %d\n",
io_queue_num, queue_size);
dev_info(&pdev->dev, "creating %d io queues. queue size: %d. LLQ is %s\n",
io_queue_num, queue_size,
(ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) ?
"ENABLED" : "DISABLED");
/* dev zeroed in init_etherdev */
netdev = alloc_etherdev_mq(sizeof(struct ena_adapter), io_queue_num);
......@@ -3332,9 +3427,15 @@ static int ena_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
timer_setup(&adapter->timer_service, ena_timer_service, 0);
mod_timer(&adapter->timer_service, round_jiffies(jiffies + HZ));
dev_info(&pdev->dev, "%s found at mem %lx, mac addr %pM Queues %d\n",
if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST)
queue_type_str = "Regular";
else
queue_type_str = "Low Latency";
dev_info(&pdev->dev,
"%s found at mem %lx, mac addr %pM Queues %d, Placement policy: %s\n",
DEVICE_NAME, (long)pci_resource_start(pdev, 0),
netdev->dev_addr, io_queue_num);
netdev->dev_addr, io_queue_num, queue_type_str);
set_bit(ENA_FLAG_DEVICE_RUNNING, &adapter->flags);
......
drivers/net/ethernet/amazon/ena/ena_netdev.h
View file @ 38005ca8
......@@ -151,6 +151,9 @@ struct ena_tx_buffer {
/* num of buffers used by this skb */
u32 num_of_bufs;
/* Indicate if bufs[0] map the linear data of the skb. */
u8 map_linear_data;
/* Used for detect missing tx packets to limit the number of prints */
u32 print_once;
/* Save the last jiffies to detect missing tx packets
......@@ -186,6 +189,7 @@ struct ena_stats_tx {
u64 tx_poll;
u64 doorbells;
u64 bad_req_id;
u64 llq_buffer_copy;
u64 missed_tx;
};
......@@ -257,6 +261,8 @@ struct ena_ring {
struct ena_stats_tx tx_stats;
struct ena_stats_rx rx_stats;
};
u8 *push_buf_intermediate_buf;
int empty_rx_queue;
} ____cacheline_aligned;
......
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