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Message-Id: <20200721003810.2770559-10-anthony.l.nguyen@intel.com>
Date: Mon, 20 Jul 2020 17:38:04 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net
Cc: Alice Michael <alice.michael@...el.com>, netdev@...r.kernel.org,
nhorman@...hat.com, sassmann@...hat.com,
jeffrey.t.kirsher@...el.com, anthony.l.nguyen@...el.com,
Alan Brady <alan.brady@...el.com>,
Phani Burra <phani.r.burra@...el.com>,
Joshua Hay <joshua.a.hay@...el.com>,
Madhu Chittim <madhu.chittim@...el.com>,
Pavan Kumar Linga <pavan.kumar.linga@...el.com>,
Donald Skidmore <donald.c.skidmore@...el.com>,
Jesse Brandeburg <jesse.brandeburg@...el.com>,
Sridhar Samudrala <sridhar.samudrala@...el.com>
Subject: [net-next v4 09/15] iecm: Init and allocate vport
From: Alice Michael <alice.michael@...el.com>
Initialize vport and allocate queue resources.
Signed-off-by: Alice Michael <alice.michael@...el.com>
Signed-off-by: Alan Brady <alan.brady@...el.com>
Signed-off-by: Phani Burra <phani.r.burra@...el.com>
Signed-off-by: Joshua Hay <joshua.a.hay@...el.com>
Signed-off-by: Madhu Chittim <madhu.chittim@...el.com>
Signed-off-by: Pavan Kumar Linga <pavan.kumar.linga@...el.com>
Reviewed-by: Donald Skidmore <donald.c.skidmore@...el.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
drivers/net/ethernet/intel/iecm/iecm_lib.c | 125 ++-
drivers/net/ethernet/intel/iecm/iecm_txrx.c | 782 +++++++++++++++++-
.../net/ethernet/intel/iecm/iecm_virtchnl.c | 36 +-
3 files changed, 911 insertions(+), 32 deletions(-)
diff --git a/drivers/net/ethernet/intel/iecm/iecm_lib.c b/drivers/net/ethernet/intel/iecm/iecm_lib.c
index 1e9c2d9ab6ba..ccfb4b406523 100644
--- a/drivers/net/ethernet/intel/iecm/iecm_lib.c
+++ b/drivers/net/ethernet/intel/iecm/iecm_lib.c
@@ -459,7 +459,15 @@ static void iecm_vport_rel_all(struct iecm_adapter *adapter)
void iecm_vport_set_hsplit(struct iecm_vport *vport,
struct bpf_prog __always_unused *prog)
{
- /* stub */
+ if (prog) {
+ vport->rx_hsplit_en = IECM_RX_NO_HDR_SPLIT;
+ return;
+ }
+ if (iecm_is_cap_ena(vport->adapter, VIRTCHNL_CAP_HEADER_SPLIT) &&
+ iecm_is_queue_model_split(vport->rxq_model))
+ vport->rx_hsplit_en = IECM_RX_HDR_SPLIT;
+ else
+ vport->rx_hsplit_en = IECM_RX_NO_HDR_SPLIT;
}
/**
@@ -546,7 +554,19 @@ static void iecm_service_task(struct work_struct *work)
*/
static int iecm_up_complete(struct iecm_vport *vport)
{
- /* stub */
+ int err;
+
+ err = netif_set_real_num_rx_queues(vport->netdev, vport->num_txq);
+ if (err)
+ return err;
+ err = netif_set_real_num_tx_queues(vport->netdev, vport->num_rxq);
+ if (err)
+ return err;
+ netif_carrier_on(vport->netdev);
+ netif_tx_start_all_queues(vport->netdev);
+
+ vport->adapter->state = __IECM_UP;
+ return 0;
}
/**
@@ -555,7 +575,27 @@ static int iecm_up_complete(struct iecm_vport *vport)
*/
static void iecm_rx_init_buf_tail(struct iecm_vport *vport)
{
- /* stub */
+ int i, j;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct iecm_rxq_group *grp = &vport->rxq_grps[i];
+
+ if (iecm_is_queue_model_split(vport->rxq_model)) {
+ for (j = 0; j < IECM_BUFQS_PER_RXQ_SET; j++) {
+ struct iecm_queue *q =
+ &grp->splitq.bufq_sets[j].bufq;
+
+ writel_relaxed(q->next_to_alloc, q->tail);
+ }
+ } else {
+ for (j = 0; j < grp->singleq.num_rxq; j++) {
+ struct iecm_queue *q =
+ &grp->singleq.rxqs[j];
+
+ writel_relaxed(q->next_to_alloc, q->tail);
+ }
+ }
+ }
}
/**
@@ -564,7 +604,80 @@ static void iecm_rx_init_buf_tail(struct iecm_vport *vport)
*/
static int iecm_vport_open(struct iecm_vport *vport)
{
- /* stub */
+ struct iecm_adapter *adapter = vport->adapter;
+ int err;
+
+ if (vport->adapter->state != __IECM_DOWN)
+ return -EBUSY;
+
+ /* we do not allow interface up just yet */
+ netif_carrier_off(vport->netdev);
+
+ if (adapter->dev_ops.vc_ops.enable_vport) {
+ err = adapter->dev_ops.vc_ops.enable_vport(vport);
+ if (err)
+ return -EAGAIN;
+ }
+
+ err = adapter->dev_ops.vc_ops.vport_queue_ids_init(vport);
+ if (err) {
+ dev_err(&vport->adapter->pdev->dev,
+ "Call to queue ids init returned %d\n", err);
+ return err;
+ }
+
+ adapter->dev_ops.reg_ops.vportq_reg_init(vport);
+ iecm_rx_init_buf_tail(vport);
+
+ err = iecm_vport_intr_init(vport);
+ if (err) {
+ dev_err(&vport->adapter->pdev->dev,
+ "Call to vport interrupt init returned %d\n", err);
+ return err;
+ }
+
+ err = vport->adapter->dev_ops.vc_ops.config_queues(vport);
+ if (err)
+ goto unroll_config_queues;
+ err = vport->adapter->dev_ops.vc_ops.irq_map_unmap(vport, true);
+ if (err) {
+ dev_err(&vport->adapter->pdev->dev,
+ "Call to irq_map_unmap returned %d\n", err);
+ goto unroll_config_queues;
+ }
+ err = vport->adapter->dev_ops.vc_ops.enable_queues(vport);
+ if (err)
+ goto unroll_enable_queues;
+
+ err = vport->adapter->dev_ops.vc_ops.get_ptype(vport);
+ if (err)
+ goto unroll_get_ptype;
+
+ if (adapter->rss_data.rss_lut)
+ err = iecm_config_rss(vport);
+ else
+ err = iecm_init_rss(vport);
+ if (err)
+ goto unroll_init_rss;
+ err = iecm_up_complete(vport);
+ if (err)
+ goto unroll_up_comp;
+
+ netif_info(vport->adapter, hw, vport->netdev, "%s\n", __func__);
+
+ return 0;
+unroll_up_comp:
+ iecm_deinit_rss(vport);
+unroll_init_rss:
+ adapter->dev_ops.vc_ops.disable_vport(vport);
+unroll_get_ptype:
+ vport->adapter->dev_ops.vc_ops.disable_queues(vport);
+unroll_enable_queues:
+ vport->adapter->dev_ops.vc_ops.irq_map_unmap(vport, false);
+unroll_config_queues:
+ iecm_vport_intr_deinit(vport);
+
+ return err;
}
/**
@@ -901,7 +1014,9 @@ EXPORT_SYMBOL(iecm_shutdown);
*/
static int iecm_open(struct net_device *netdev)
{
- /* stub */
+ struct iecm_netdev_priv *np = netdev_priv(netdev);
+
+ return iecm_vport_open(np->vport);
}
/**
diff --git a/drivers/net/ethernet/intel/iecm/iecm_txrx.c b/drivers/net/ethernet/intel/iecm/iecm_txrx.c
index 8214de2506af..781942f934df 100644
--- a/drivers/net/ethernet/intel/iecm/iecm_txrx.c
+++ b/drivers/net/ethernet/intel/iecm/iecm_txrx.c
@@ -86,7 +86,38 @@ static void iecm_tx_desc_rel_all(struct iecm_vport *vport)
*/
static int iecm_tx_buf_alloc_all(struct iecm_queue *tx_q)
{
- /* stub */
+ int buf_size;
+ int i = 0;
+
+ /* Allocate book keeping buffers only. Buffers to be supplied to HW
+ * are allocated by kernel network stack and received as part of skb
+ */
+ buf_size = sizeof(struct iecm_tx_buf) * tx_q->desc_count;
+ tx_q->tx_buf = kzalloc(buf_size, GFP_KERNEL);
+ if (!tx_q->tx_buf)
+ return -ENOMEM;
+
+ /* Initialize Tx buf stack for out-of-order completions if
+ * flow scheduling offload is enabled
+ */
+ tx_q->buf_stack.bufs =
+ kcalloc(tx_q->desc_count, sizeof(struct iecm_tx_buf *),
+ GFP_KERNEL);
+ if (!tx_q->buf_stack.bufs)
+ return -ENOMEM;
+
+ for (i = 0; i < tx_q->desc_count; i++) {
+ tx_q->buf_stack.bufs[i] =
+ kzalloc(sizeof(*tx_q->buf_stack.bufs[i]),
+ GFP_KERNEL);
+ if (!tx_q->buf_stack.bufs[i])
+ return IECM_ERR_NO_MEMORY;
+ }
+
+ tx_q->buf_stack.size = tx_q->desc_count;
+ tx_q->buf_stack.top = tx_q->desc_count;
+
+ return 0;
}
/**
@@ -98,7 +129,40 @@ static int iecm_tx_buf_alloc_all(struct iecm_queue *tx_q)
*/
static int iecm_tx_desc_alloc(struct iecm_queue *tx_q, bool bufq)
{
- /* stub */
+ struct device *dev = tx_q->dev;
+ int err = 0;
+
+ if (bufq) {
+ err = iecm_tx_buf_alloc_all(tx_q);
+ if (err)
+ goto err_alloc;
+ tx_q->size = tx_q->desc_count *
+ sizeof(struct iecm_base_tx_desc);
+ } else {
+ tx_q->size = tx_q->desc_count *
+ sizeof(struct iecm_splitq_tx_compl_desc);
+ }
+
+ /* Allocate descriptors also round up to nearest 4K */
+ tx_q->size = ALIGN(tx_q->size, 4096);
+ tx_q->desc_ring = dmam_alloc_coherent(dev, tx_q->size, &tx_q->dma,
+ GFP_KERNEL);
+ if (!tx_q->desc_ring) {
+ dev_info(dev, "Unable to allocate memory for the Tx descriptor ring, size=%d\n",
+ tx_q->size);
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ tx_q->next_to_alloc = 0;
+ tx_q->next_to_use = 0;
+ tx_q->next_to_clean = 0;
+ set_bit(__IECM_Q_GEN_CHK, tx_q->flags);
+
+err_alloc:
+ if (err)
+ iecm_tx_desc_rel(tx_q, bufq);
+ return err;
}
/**
@@ -109,7 +173,41 @@ static int iecm_tx_desc_alloc(struct iecm_queue *tx_q, bool bufq)
*/
static int iecm_tx_desc_alloc_all(struct iecm_vport *vport)
{
- /* stub */
+ struct pci_dev *pdev = vport->adapter->pdev;
+ int err = 0;
+ int i, j;
+
+ /* Setup buffer queues. In single queue model buffer queues and
+ * completion queues will be same
+ */
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ for (j = 0; j < vport->txq_grps[i].num_txq; j++) {
+ err = iecm_tx_desc_alloc(&vport->txq_grps[i].txqs[j],
+ true);
+ if (err) {
+ dev_err(&pdev->dev,
+ "Allocation for Tx Queue %u failed\n",
+ i);
+ goto err_out;
+ }
+ }
+
+ if (iecm_is_queue_model_split(vport->txq_model)) {
+ /* Setup completion queues */
+ err = iecm_tx_desc_alloc(vport->txq_grps[i].complq,
+ false);
+ if (err) {
+ dev_err(&pdev->dev,
+ "Allocation for Tx Completion Queue %u failed\n",
+ i);
+ goto err_out;
+ }
+ }
+ }
+err_out:
+ if (err)
+ iecm_tx_desc_rel_all(vport);
+ return err;
}
/**
@@ -164,7 +262,19 @@ static void iecm_rx_desc_rel_all(struct iecm_vport *vport)
*/
void iecm_rx_buf_hw_update(struct iecm_queue *rxq, u32 val)
{
- /* stub */
+ /* update next to alloc since we have filled the ring */
+ rxq->next_to_alloc = val;
+
+ rxq->next_to_use = val;
+ if (!rxq->tail)
+ return;
+ /* Force memory writes to complete before letting h/w
+ * know there are new descriptors to fetch. (Only
+ * applicable for weak-ordered memory model archs,
+ * such as IA-64).
+ */
+ wmb();
+ writel_relaxed(val, rxq->tail);
}
/**
@@ -177,7 +287,34 @@ void iecm_rx_buf_hw_update(struct iecm_queue *rxq, u32 val)
*/
bool iecm_rx_buf_hw_alloc(struct iecm_queue *rxq, struct iecm_rx_buf *buf)
{
- /* stub */
+ struct page *page = buf->page;
+ dma_addr_t dma;
+
+ /* since we are recycling buffers we should seldom need to alloc */
+ if (likely(page))
+ return true;
+
+ /* alloc new page for storage */
+ page = alloc_page(GFP_ATOMIC | __GFP_NOWARN);
+ if (unlikely(!page))
+ return false;
+
+ /* map page for use */
+ dma = dma_map_page(rxq->dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE);
+
+ /* if mapping failed free memory back to system since
+ * there isn't much point in holding memory we can't use
+ */
+ if (dma_mapping_error(rxq->dev, dma)) {
+ __free_pages(page, 0);
+ return false;
+ }
+
+ buf->dma = dma;
+ buf->page = page;
+ buf->page_offset = iecm_rx_offset(rxq);
+
+ return true;
}
/**
@@ -191,7 +328,34 @@ bool iecm_rx_buf_hw_alloc(struct iecm_queue *rxq, struct iecm_rx_buf *buf)
static bool iecm_rx_hdr_buf_hw_alloc(struct iecm_queue *rxq,
struct iecm_rx_buf *hdr_buf)
{
- /* stub */
+ struct page *page = hdr_buf->page;
+ dma_addr_t dma;
+
+ /* since we are recycling buffers we should seldom need to alloc */
+ if (likely(page))
+ return true;
+
+ /* alloc new page for storage */
+ page = alloc_page(GFP_ATOMIC | __GFP_NOWARN);
+ if (unlikely(!page))
+ return false;
+
+ /* map page for use */
+ dma = dma_map_page(rxq->dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE);
+
+ /* if mapping failed free memory back to system since
+ * there isn't much point in holding memory we can't use
+ */
+ if (dma_mapping_error(rxq->dev, dma)) {
+ __free_pages(page, 0);
+ return false;
+ }
+
+ hdr_buf->dma = dma;
+ hdr_buf->page = page;
+ hdr_buf->page_offset = 0;
+
+ return true;
}
/**
@@ -205,7 +369,59 @@ static bool
iecm_rx_buf_hw_alloc_all(struct iecm_queue *rxq,
u16 cleaned_count)
{
- /* stub */
+ struct iecm_splitq_rx_buf_desc *splitq_rx_desc = NULL;
+ struct iecm_rx_buf *hdr_buf = NULL;
+ u16 nta = rxq->next_to_alloc;
+ struct iecm_rx_buf *buf;
+
+ /* do nothing if no valid netdev defined */
+ if (!rxq->vport->netdev || !cleaned_count)
+ return false;
+
+ splitq_rx_desc = IECM_SPLITQ_RX_BUF_DESC(rxq, nta);
+
+ buf = &rxq->rx_buf.buf[nta];
+ if (rxq->rx_hsplit_en)
+ hdr_buf = &rxq->rx_buf.hdr_buf[nta];
+
+ do {
+ if (rxq->rx_hsplit_en) {
+ if (!iecm_rx_hdr_buf_hw_alloc(rxq, hdr_buf))
+ break;
+
+ splitq_rx_desc->hdr_addr =
+ cpu_to_le64(hdr_buf->dma +
+ hdr_buf->page_offset);
+ hdr_buf++;
+ }
+
+ if (!iecm_rx_buf_hw_alloc(rxq, buf))
+ break;
+
+ /* Refresh the desc even if buffer_addrs didn't change
+ * because each write-back erases this info.
+ */
+ splitq_rx_desc->pkt_addr =
+ cpu_to_le64(buf->dma + buf->page_offset);
+ splitq_rx_desc->qword0.buf_id = cpu_to_le16(nta);
+
+ splitq_rx_desc++;
+ buf++;
+ nta++;
+ if (unlikely(nta == rxq->desc_count)) {
+ splitq_rx_desc = IECM_SPLITQ_RX_BUF_DESC(rxq, 0);
+ buf = rxq->rx_buf.buf;
+ hdr_buf = rxq->rx_buf.hdr_buf;
+ nta = 0;
+ }
+
+ cleaned_count--;
+ } while (cleaned_count);
+
+ if (rxq->next_to_alloc != nta)
+ iecm_rx_buf_hw_update(rxq, nta);
+
+ return !!cleaned_count;
}
/**
@@ -216,7 +432,44 @@ iecm_rx_buf_hw_alloc_all(struct iecm_queue *rxq,
*/
static int iecm_rx_buf_alloc_all(struct iecm_queue *rxq)
{
- /* stub */
+ int err = 0;
+
+ /* Allocate book keeping buffers */
+ rxq->rx_buf.buf = kcalloc(rxq->desc_count, sizeof(struct iecm_rx_buf),
+ GFP_KERNEL);
+ if (!rxq->rx_buf.buf) {
+ err = -ENOMEM;
+ goto rx_buf_alloc_all_out;
+ }
+
+ if (rxq->rx_hsplit_en) {
+ rxq->rx_buf.hdr_buf =
+ kcalloc(rxq->desc_count, sizeof(struct iecm_rx_buf),
+ GFP_KERNEL);
+ if (!rxq->rx_buf.hdr_buf) {
+ err = -ENOMEM;
+ goto rx_buf_alloc_all_out;
+ }
+ } else {
+ rxq->rx_buf.hdr_buf = NULL;
+ }
+
+ /* Allocate buffers to be given to HW. Allocate one less than
+ * total descriptor count as RX splits 4k buffers to 2K and recycles
+ */
+ if (iecm_is_queue_model_split(rxq->vport->rxq_model)) {
+ if (iecm_rx_buf_hw_alloc_all(rxq,
+ rxq->desc_count - 1))
+ err = -ENOMEM;
+ } else if (iecm_rx_singleq_buf_hw_alloc_all(rxq,
+ rxq->desc_count - 1)) {
+ err = -ENOMEM;
+ }
+
+rx_buf_alloc_all_out:
+ if (err)
+ iecm_rx_buf_rel_all(rxq);
+ return err;
}
/**
@@ -230,7 +483,48 @@ static int iecm_rx_buf_alloc_all(struct iecm_queue *rxq)
static int iecm_rx_desc_alloc(struct iecm_queue *rxq, bool bufq,
enum virtchnl_queue_model q_model)
{
- /* stub */
+ struct device *dev = rxq->dev;
+
+ /* As both single and split descriptors are 32 byte, memory size
+ * will be same for all three singleq_base Rx, buf., splitq_base
+ * Rx. So pick anyone of them for size
+ */
+ if (bufq) {
+ rxq->size = rxq->desc_count *
+ sizeof(struct iecm_splitq_rx_buf_desc);
+ } else {
+ rxq->size = rxq->desc_count *
+ sizeof(union iecm_rx_desc);
+ }
+
+ /* Allocate descriptors and also round up to nearest 4K */
+ rxq->size = ALIGN(rxq->size, 4096);
+ rxq->desc_ring = dmam_alloc_coherent(dev, rxq->size,
+ &rxq->dma, GFP_KERNEL);
+ if (!rxq->desc_ring) {
+ dev_info(dev, "Unable to allocate memory for the Rx descriptor ring, size=%d\n",
+ rxq->size);
+ return -ENOMEM;
+ }
+
+ rxq->next_to_alloc = 0;
+ rxq->next_to_clean = 0;
+ rxq->next_to_use = 0;
+ set_bit(__IECM_Q_GEN_CHK, rxq->flags);
+
+ /* Allocate buffers for a Rx queue if the q_model is single OR if it
+ * is a buffer queue in split queue model
+ */
+ if (bufq || !iecm_is_queue_model_split(q_model)) {
+ int err = 0;
+
+ err = iecm_rx_buf_alloc_all(rxq);
+ if (err) {
+ iecm_rx_desc_rel(rxq, bufq, q_model);
+ return err;
+ }
+ }
+ return 0;
}
/**
@@ -241,7 +535,48 @@ static int iecm_rx_desc_alloc(struct iecm_queue *rxq, bool bufq,
*/
static int iecm_rx_desc_alloc_all(struct iecm_vport *vport)
{
- /* stub */
+ struct device *dev = &vport->adapter->pdev->dev;
+ struct iecm_queue *q;
+ int i, j, num_rxq;
+ int err = 0;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ if (iecm_is_queue_model_split(vport->rxq_model))
+ num_rxq = vport->rxq_grps[i].splitq.num_rxq_sets;
+ else
+ num_rxq = vport->rxq_grps[i].singleq.num_rxq;
+
+ for (j = 0; j < num_rxq; j++) {
+ if (iecm_is_queue_model_split(vport->rxq_model))
+ q = &vport->rxq_grps[i].splitq.rxq_sets[j].rxq;
+ else
+ q = &vport->rxq_grps[i].singleq.rxqs[j];
+ err = iecm_rx_desc_alloc(q, false, vport->rxq_model);
+ if (err) {
+ dev_err(dev, "Memory allocation for Rx Queue %u failed\n",
+ i);
+ goto err_out;
+ }
+ }
+
+ if (iecm_is_queue_model_split(vport->rxq_model)) {
+ for (j = 0; j < IECM_BUFQS_PER_RXQ_SET; j++) {
+ q =
+ &vport->rxq_grps[i].splitq.bufq_sets[j].bufq;
+ err = iecm_rx_desc_alloc(q, true,
+ vport->rxq_model);
+ if (err) {
+ dev_err(dev, "Memory allocation for Rx Buffer Queue %u failed\n",
+ i);
+ goto err_out;
+ }
+ }
+ }
+ }
+err_out:
+ if (err)
+ iecm_rx_desc_rel_all(vport);
+ return err;
}
/**
@@ -294,7 +629,23 @@ void iecm_vport_queues_rel(struct iecm_vport *vport)
*/
static int iecm_vport_init_fast_path_txqs(struct iecm_vport *vport)
{
- /* stub */
+ int i, j, k = 0;
+
+ vport->txqs = kcalloc(vport->num_txq, sizeof(struct iecm_queue *),
+ GFP_KERNEL);
+
+ if (!vport->txqs)
+ return -ENOMEM;
+
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct iecm_txq_group *tx_grp = &vport->txq_grps[i];
+
+ for (j = 0; j < tx_grp->num_txq; j++, k++) {
+ vport->txqs[k] = &tx_grp->txqs[j];
+ vport->txqs[k]->idx = k;
+ }
+ }
+ return 0;
}
/**
@@ -305,7 +656,12 @@ static int iecm_vport_init_fast_path_txqs(struct iecm_vport *vport)
void iecm_vport_init_num_qs(struct iecm_vport *vport,
struct virtchnl_create_vport *vport_msg)
{
- /* stub */
+ vport->num_txq = vport_msg->num_tx_q;
+ vport->num_rxq = vport_msg->num_rx_q;
+ if (iecm_is_queue_model_split(vport->txq_model))
+ vport->num_complq = vport_msg->num_tx_complq;
+ if (iecm_is_queue_model_split(vport->rxq_model))
+ vport->num_bufq = vport_msg->num_rx_bufq;
}
/**
@@ -314,7 +670,32 @@ void iecm_vport_init_num_qs(struct iecm_vport *vport,
*/
void iecm_vport_calc_num_q_desc(struct iecm_vport *vport)
{
- /* stub */
+ int num_req_txq_desc = vport->adapter->config_data.num_req_txq_desc;
+ int num_req_rxq_desc = vport->adapter->config_data.num_req_rxq_desc;
+
+ vport->complq_desc_count = 0;
+ vport->bufq_desc_count = 0;
+ if (num_req_txq_desc) {
+ vport->txq_desc_count = num_req_txq_desc;
+ if (iecm_is_queue_model_split(vport->txq_model))
+ vport->complq_desc_count = num_req_txq_desc;
+ } else {
+ vport->txq_desc_count =
+ IECM_DFLT_TX_Q_DESC_COUNT;
+ if (iecm_is_queue_model_split(vport->txq_model)) {
+ vport->complq_desc_count =
+ IECM_DFLT_TX_COMPLQ_DESC_COUNT;
+ }
+ }
+ if (num_req_rxq_desc) {
+ vport->rxq_desc_count = num_req_rxq_desc;
+ if (iecm_is_queue_model_split(vport->rxq_model))
+ vport->bufq_desc_count = num_req_rxq_desc;
+ } else {
+ vport->rxq_desc_count = IECM_DFLT_RX_Q_DESC_COUNT;
+ if (iecm_is_queue_model_split(vport->rxq_model))
+ vport->bufq_desc_count = IECM_DFLT_RX_BUFQ_DESC_COUNT;
+ }
}
EXPORT_SYMBOL(iecm_vport_calc_num_q_desc);
@@ -326,7 +707,51 @@ EXPORT_SYMBOL(iecm_vport_calc_num_q_desc);
void iecm_vport_calc_total_qs(struct virtchnl_create_vport *vport_msg,
int num_req_qs)
{
- /* stub */
+ int dflt_splitq_txq_grps, dflt_singleq_txqs;
+ int dflt_splitq_rxq_grps, dflt_singleq_rxqs;
+ int num_txq_grps, num_rxq_grps;
+ int num_cpus;
+
+ /* Restrict num of queues to cpus online as a default configuration to
+ * give best performance. User can always override to a max number
+ * of queues via ethtool.
+ */
+ num_cpus = num_online_cpus();
+ dflt_splitq_txq_grps = min_t(int, IECM_DFLT_SPLITQ_TX_Q_GROUPS,
+ num_cpus);
+ dflt_singleq_txqs = min_t(int, IECM_DFLT_SINGLEQ_TXQ_PER_GROUP,
+ num_cpus);
+ dflt_splitq_rxq_grps = min_t(int, IECM_DFLT_SPLITQ_RX_Q_GROUPS,
+ num_cpus);
+ dflt_singleq_rxqs = min_t(int, IECM_DFLT_SINGLEQ_RXQ_PER_GROUP,
+ num_cpus);
+
+ if (iecm_is_queue_model_split(vport_msg->txq_model)) {
+ num_txq_grps = num_req_qs ? num_req_qs : dflt_splitq_txq_grps;
+ vport_msg->num_tx_complq = num_txq_grps *
+ IECM_COMPLQ_PER_GROUP;
+ vport_msg->num_tx_q = num_txq_grps *
+ IECM_DFLT_SPLITQ_TXQ_PER_GROUP;
+ } else {
+ num_txq_grps = IECM_DFLT_SINGLEQ_TX_Q_GROUPS;
+ vport_msg->num_tx_q = num_txq_grps *
+ (num_req_qs ? num_req_qs :
+ dflt_singleq_txqs);
+ vport_msg->num_tx_complq = 0;
+ }
+ if (iecm_is_queue_model_split(vport_msg->rxq_model)) {
+ num_rxq_grps = num_req_qs ? num_req_qs : dflt_splitq_rxq_grps;
+ vport_msg->num_rx_bufq = num_rxq_grps *
+ IECM_BUFQS_PER_RXQ_SET;
+ vport_msg->num_rx_q = num_rxq_grps *
+ IECM_DFLT_SPLITQ_RXQ_PER_GROUP;
+ } else {
+ num_rxq_grps = IECM_DFLT_SINGLEQ_RX_Q_GROUPS;
+ vport_msg->num_rx_bufq = 0;
+ vport_msg->num_rx_q = num_rxq_grps *
+ (num_req_qs ? num_req_qs :
+ dflt_singleq_rxqs);
+ }
}
/**
@@ -335,7 +760,15 @@ void iecm_vport_calc_total_qs(struct virtchnl_create_vport *vport_msg,
*/
void iecm_vport_calc_num_q_groups(struct iecm_vport *vport)
{
- /* stub */
+ if (iecm_is_queue_model_split(vport->txq_model))
+ vport->num_txq_grp = vport->num_txq;
+ else
+ vport->num_txq_grp = IECM_DFLT_SINGLEQ_TX_Q_GROUPS;
+
+ if (iecm_is_queue_model_split(vport->rxq_model))
+ vport->num_rxq_grp = vport->num_rxq;
+ else
+ vport->num_rxq_grp = IECM_DFLT_SINGLEQ_RX_Q_GROUPS;
}
EXPORT_SYMBOL(iecm_vport_calc_num_q_groups);
@@ -348,7 +781,15 @@ EXPORT_SYMBOL(iecm_vport_calc_num_q_groups);
static void iecm_vport_calc_numq_per_grp(struct iecm_vport *vport,
int *num_txq, int *num_rxq)
{
- /* stub */
+ if (iecm_is_queue_model_split(vport->txq_model))
+ *num_txq = IECM_DFLT_SPLITQ_TXQ_PER_GROUP;
+ else
+ *num_txq = vport->num_txq;
+
+ if (iecm_is_queue_model_split(vport->rxq_model))
+ *num_rxq = IECM_DFLT_SPLITQ_RXQ_PER_GROUP;
+ else
+ *num_rxq = vport->num_rxq;
}
/**
@@ -359,7 +800,10 @@ static void iecm_vport_calc_numq_per_grp(struct iecm_vport *vport,
*/
void iecm_vport_calc_num_q_vec(struct iecm_vport *vport)
{
- /* stub */
+ if (iecm_is_queue_model_split(vport->txq_model))
+ vport->num_q_vectors = vport->num_txq_grp;
+ else
+ vport->num_q_vectors = vport->num_txq;
}
/**
@@ -371,7 +815,68 @@ void iecm_vport_calc_num_q_vec(struct iecm_vport *vport)
*/
static int iecm_txq_group_alloc(struct iecm_vport *vport, int num_txq)
{
- /* stub */
+ struct iecm_itr tx_itr = { 0 };
+ int err = 0;
+ int i;
+
+ vport->txq_grps = kcalloc(vport->num_txq_grp,
+ sizeof(*vport->txq_grps), GFP_KERNEL);
+ if (!vport->txq_grps)
+ return -ENOMEM;
+
+ tx_itr.target_itr = IECM_ITR_TX_DEF;
+ tx_itr.itr_idx = VIRTCHNL_ITR_IDX_1;
+ tx_itr.next_update = jiffies + 1;
+
+ for (i = 0; i < vport->num_txq_grp; i++) {
+ struct iecm_txq_group *tx_qgrp = &vport->txq_grps[i];
+ int j;
+
+ tx_qgrp->vport = vport;
+ tx_qgrp->num_txq = num_txq;
+ tx_qgrp->txqs = kcalloc(num_txq, sizeof(*tx_qgrp->txqs),
+ GFP_KERNEL);
+ if (!tx_qgrp->txqs) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ for (j = 0; j < tx_qgrp->num_txq; j++) {
+ struct iecm_queue *q = &tx_qgrp->txqs[j];
+
+ q->dev = &vport->adapter->pdev->dev;
+ q->desc_count = vport->txq_desc_count;
+ q->vport = vport;
+ q->txq_grp = tx_qgrp;
+ hash_init(q->sched_buf_hash);
+
+ if (!iecm_is_queue_model_split(vport->txq_model))
+ q->itr = tx_itr;
+ }
+
+ if (!iecm_is_queue_model_split(vport->txq_model))
+ continue;
+
+ tx_qgrp->complq = kcalloc(IECM_COMPLQ_PER_GROUP,
+ sizeof(*tx_qgrp->complq),
+ GFP_KERNEL);
+ if (!tx_qgrp->complq) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ tx_qgrp->complq->dev = &vport->adapter->pdev->dev;
+ tx_qgrp->complq->desc_count = vport->complq_desc_count;
+ tx_qgrp->complq->vport = vport;
+ tx_qgrp->complq->txq_grp = tx_qgrp;
+
+ tx_qgrp->complq->itr = tx_itr;
+ }
+
+err_alloc:
+ if (err)
+ iecm_txq_group_rel(vport);
+ return err;
}
/**
@@ -383,7 +888,115 @@ static int iecm_txq_group_alloc(struct iecm_vport *vport, int num_txq)
*/
static int iecm_rxq_group_alloc(struct iecm_vport *vport, int num_rxq)
{
- /* stub */
+ struct iecm_itr rx_itr = {0};
+ struct iecm_queue *q;
+ int i, err = 0;
+
+ vport->rxq_grps = kcalloc(vport->num_rxq_grp,
+ sizeof(struct iecm_rxq_group), GFP_KERNEL);
+ if (!vport->rxq_grps)
+ return -ENOMEM;
+
+ rx_itr.target_itr = IECM_ITR_RX_DEF;
+ rx_itr.itr_idx = VIRTCHNL_ITR_IDX_0;
+ rx_itr.next_update = jiffies + 1;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct iecm_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+ int j;
+
+ rx_qgrp->vport = vport;
+ if (iecm_is_queue_model_split(vport->rxq_model)) {
+ rx_qgrp->splitq.num_rxq_sets = num_rxq;
+ rx_qgrp->splitq.rxq_sets =
+ kcalloc(num_rxq,
+ sizeof(struct iecm_rxq_set),
+ GFP_KERNEL);
+ if (!rx_qgrp->splitq.rxq_sets) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ rx_qgrp->splitq.bufq_sets =
+ kcalloc(IECM_BUFQS_PER_RXQ_SET,
+ sizeof(struct iecm_bufq_set),
+ GFP_KERNEL);
+ if (!rx_qgrp->splitq.bufq_sets) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+
+ for (j = 0; j < IECM_BUFQS_PER_RXQ_SET; j++) {
+ int swq_size = sizeof(struct iecm_sw_queue);
+
+ q = &rx_qgrp->splitq.bufq_sets[j].bufq;
+ q->dev = &vport->adapter->pdev->dev;
+ q->desc_count = vport->bufq_desc_count;
+ q->vport = vport;
+ q->rxq_grp = rx_qgrp;
+ q->idx = j;
+ q->rx_buf_size = IECM_RX_BUF_2048;
+ q->rsc_low_watermark = IECM_LOW_WATERMARK;
+ q->rx_buf_stride = IECM_RX_BUF_STRIDE;
+ q->itr = rx_itr;
+
+ if (vport->rx_hsplit_en) {
+ q->rx_hsplit_en = vport->rx_hsplit_en;
+ q->rx_hbuf_size = IECM_HDR_BUF_SIZE;
+ }
+
+ rx_qgrp->splitq.bufq_sets[j].num_refillqs =
+ num_rxq;
+ rx_qgrp->splitq.bufq_sets[j].refillqs =
+ kcalloc(num_rxq, swq_size, GFP_KERNEL);
+ if (!rx_qgrp->splitq.bufq_sets[j].refillqs) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+ }
+ } else {
+ rx_qgrp->singleq.num_rxq = num_rxq;
+ rx_qgrp->singleq.rxqs = kcalloc(num_rxq,
+ sizeof(struct iecm_queue),
+ GFP_KERNEL);
+ if (!rx_qgrp->singleq.rxqs) {
+ err = -ENOMEM;
+ goto err_alloc;
+ }
+ }
+
+ for (j = 0; j < num_rxq; j++) {
+ if (iecm_is_queue_model_split(vport->rxq_model)) {
+ q = &rx_qgrp->splitq.rxq_sets[j].rxq;
+ rx_qgrp->splitq.rxq_sets[j].refillq0 =
+ &rx_qgrp->splitq.bufq_sets[0].refillqs[j];
+ rx_qgrp->splitq.rxq_sets[j].refillq1 =
+ &rx_qgrp->splitq.bufq_sets[1].refillqs[j];
+
+ if (vport->rx_hsplit_en) {
+ q->rx_hsplit_en = vport->rx_hsplit_en;
+ q->rx_hbuf_size = IECM_HDR_BUF_SIZE;
+ }
+
+ } else {
+ q = &rx_qgrp->singleq.rxqs[j];
+ }
+ q->dev = &vport->adapter->pdev->dev;
+ q->desc_count = vport->rxq_desc_count;
+ q->vport = vport;
+ q->rxq_grp = rx_qgrp;
+ q->idx = (i * num_rxq) + j;
+ q->rx_buf_size = IECM_RX_BUF_2048;
+ q->rsc_low_watermark = IECM_LOW_WATERMARK;
+ q->rx_max_pkt_size = vport->netdev->mtu +
+ IECM_PACKET_HDR_PAD;
+ q->itr = rx_itr;
+ }
+ }
+err_alloc:
+ if (err)
+ iecm_rxq_group_rel(vport);
+ return err;
}
/**
@@ -394,7 +1007,20 @@ static int iecm_rxq_group_alloc(struct iecm_vport *vport, int num_rxq)
*/
static int iecm_vport_queue_grp_alloc_all(struct iecm_vport *vport)
{
- /* stub */
+ int num_txq, num_rxq;
+ int err;
+
+ iecm_vport_calc_numq_per_grp(vport, &num_txq, &num_rxq);
+
+ err = iecm_txq_group_alloc(vport, num_txq);
+ if (err)
+ goto err_out;
+
+ err = iecm_rxq_group_alloc(vport, num_rxq);
+err_out:
+ if (err)
+ iecm_vport_queue_grp_rel_all(vport);
+ return err;
}
/**
@@ -406,7 +1032,28 @@ static int iecm_vport_queue_grp_alloc_all(struct iecm_vport *vport)
*/
int iecm_vport_queues_alloc(struct iecm_vport *vport)
{
- /* stub */
+ int err;
+
+ err = iecm_vport_queue_grp_alloc_all(vport);
+ if (err)
+ goto err_out;
+
+ err = iecm_tx_desc_alloc_all(vport);
+ if (err)
+ goto err_out;
+
+ err = iecm_rx_desc_alloc_all(vport);
+ if (err)
+ goto err_out;
+
+ err = iecm_vport_init_fast_path_txqs(vport);
+ if (err)
+ goto err_out;
+
+ return 0;
+err_out:
+ iecm_vport_queues_rel(vport);
+ return err;
}
/**
@@ -1794,7 +2441,16 @@ EXPORT_SYMBOL(iecm_vport_calc_num_q_vec);
*/
int iecm_config_rss(struct iecm_vport *vport)
{
- /* stub */
+ int err = iecm_send_get_set_rss_key_msg(vport, false);
+
+ if (!err)
+ err = vport->adapter->dev_ops.vc_ops.get_set_rss_lut(vport,
+ false);
+ if (!err)
+ err = vport->adapter->dev_ops.vc_ops.get_set_rss_hash(vport,
+ false);
+
+ return err;
}
/**
@@ -1806,7 +2462,20 @@ int iecm_config_rss(struct iecm_vport *vport)
*/
void iecm_get_rx_qid_list(struct iecm_vport *vport, u16 *qid_list)
{
- /* stub */
+ int i, j, k = 0;
+
+ for (i = 0; i < vport->num_rxq_grp; i++) {
+ struct iecm_rxq_group *rx_qgrp = &vport->rxq_grps[i];
+
+ if (iecm_is_queue_model_split(vport->rxq_model)) {
+ for (j = 0; j < rx_qgrp->splitq.num_rxq_sets; j++)
+ qid_list[k++] =
+ rx_qgrp->splitq.rxq_sets[j].rxq.q_id;
+ } else {
+ for (j = 0; j < rx_qgrp->singleq.num_rxq; j++)
+ qid_list[k++] = rx_qgrp->singleq.rxqs[j].q_id;
+ }
+ }
}
/**
@@ -1818,7 +2487,13 @@ void iecm_get_rx_qid_list(struct iecm_vport *vport, u16 *qid_list)
*/
void iecm_fill_dflt_rss_lut(struct iecm_vport *vport, u16 *qid_list)
{
- /* stub */
+ int num_lut_segs, lut_seg, i, k = 0;
+
+ num_lut_segs = vport->adapter->rss_data.rss_lut_size / vport->num_rxq;
+ for (lut_seg = 0; lut_seg < num_lut_segs; lut_seg++) {
+ for (i = 0; i < vport->num_rxq; i++)
+ vport->adapter->rss_data.rss_lut[k++] = qid_list[i];
+ }
}
/**
@@ -1829,7 +2504,64 @@ void iecm_fill_dflt_rss_lut(struct iecm_vport *vport, u16 *qid_list)
*/
int iecm_init_rss(struct iecm_vport *vport)
{
- /* stub */
+ struct iecm_adapter *adapter = vport->adapter;
+ u16 *qid_list;
+
+ adapter->rss_data.rss_key = kzalloc(adapter->rss_data.rss_key_size,
+ GFP_KERNEL);
+ if (!adapter->rss_data.rss_key)
+ return -ENOMEM;
+ adapter->rss_data.rss_lut = kzalloc(adapter->rss_data.rss_lut_size,
+ GFP_KERNEL);
+ if (!adapter->rss_data.rss_lut) {
+ kfree(adapter->rss_data.rss_key);
+ adapter->rss_data.rss_key = NULL;
+ return -ENOMEM;
+ }
+
+ /* Initialize default rss key */
+ netdev_rss_key_fill((void *)adapter->rss_data.rss_key,
+ adapter->rss_data.rss_key_size);
+
+ /* Initialize default rss lut */
+ if (adapter->rss_data.rss_lut_size % vport->num_rxq) {
+ u16 dflt_qid;
+ int i;
+
+ /* Set all entries to a default RX queue if the algorithm below
+ * won't fill all entries
+ */
+ if (iecm_is_queue_model_split(vport->rxq_model))
+ dflt_qid =
+ vport->rxq_grps[0].splitq.rxq_sets[0].rxq.q_id;
+ else
+ dflt_qid =
+ vport->rxq_grps[0].singleq.rxqs[0].q_id;
+
+ for (i = 0; i < adapter->rss_data.rss_lut_size; i++)
+ adapter->rss_data.rss_lut[i] = dflt_qid;
+ }
+
+ qid_list = kcalloc(vport->num_rxq, sizeof(u16), GFP_KERNEL);
+ if (!qid_list) {
+ kfree(adapter->rss_data.rss_lut);
+ adapter->rss_data.rss_lut = NULL;
+ kfree(adapter->rss_data.rss_key);
+ adapter->rss_data.rss_key = NULL;
+ return -ENOMEM;
+ }
+
+ iecm_get_rx_qid_list(vport, qid_list);
+
+ /* Fill the default RSS lut values*/
+ iecm_fill_dflt_rss_lut(vport, qid_list);
+
+ kfree(qid_list);
+
+ /* Initialize default rss HASH */
+ adapter->rss_data.rss_hash = IECM_DEFAULT_RSS_HASH_EXPANDED;
+
+ return iecm_config_rss(vport);
}
/**
diff --git a/drivers/net/ethernet/intel/iecm/iecm_virtchnl.c b/drivers/net/ethernet/intel/iecm/iecm_virtchnl.c
index 53b8c65147b4..d73f6b5d799d 100644
--- a/drivers/net/ethernet/intel/iecm/iecm_virtchnl.c
+++ b/drivers/net/ethernet/intel/iecm/iecm_virtchnl.c
@@ -681,7 +681,19 @@ int iecm_send_destroy_vport_msg(struct iecm_vport *vport)
*/
int iecm_send_enable_vport_msg(struct iecm_vport *vport)
{
- /* stub */
+ struct iecm_adapter *adapter = vport->adapter;
+ struct virtchnl_vport v_id;
+ int err;
+
+ v_id.vport_id = vport->vport_id;
+
+ err = iecm_send_mb_msg(adapter, VIRTCHNL_OP_ENABLE_VPORT,
+ sizeof(v_id), (u8 *)&v_id);
+ if (err)
+ return err;
+
+ return iecm_wait_for_event(adapter, IECM_VC_ENA_VPORT,
+ IECM_VC_ENA_VPORT_ERR);
}
/**
@@ -1857,7 +1869,27 @@ EXPORT_SYMBOL(iecm_vc_core_init);
static void iecm_vport_init(struct iecm_vport *vport,
__always_unused int vport_id)
{
- /* stub */
+ struct virtchnl_create_vport *vport_msg;
+
+ vport_msg = (struct virtchnl_create_vport *)
+ vport->adapter->vport_params_recvd[0];
+ vport->txq_model = vport_msg->txq_model;
+ vport->rxq_model = vport_msg->rxq_model;
+ vport->vport_type = (u16)vport_msg->vport_type;
+ vport->vport_id = vport_msg->vport_id;
+ vport->adapter->rss_data.rss_key_size = min_t(u16, NETDEV_RSS_KEY_LEN,
+ vport_msg->rss_key_size);
+ vport->adapter->rss_data.rss_lut_size = vport_msg->rss_lut_size;
+ ether_addr_copy(vport->default_mac_addr, vport_msg->default_mac_addr);
+ vport->max_mtu = IECM_MAX_MTU;
+
+ iecm_vport_set_hsplit(vport, NULL);
+
+ init_waitqueue_head(&vport->sw_marker_wq);
+ iecm_vport_init_num_qs(vport, vport_msg);
+ iecm_vport_calc_num_q_desc(vport);
+ iecm_vport_calc_num_q_groups(vport);
+ iecm_vport_calc_num_q_vec(vport);
}
/**
--
2.26.2
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