net/sfc: support deferred start of transmit queues

[dpdk.git] / drivers / net / sfc / sfc_ethdev.c

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 6dafdeb..fa51b0c 100644 (file)
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -864,6 +864,7 @@ sfc_tx_queue_info_get(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 
        qinfo->conf.txq_flags = txq_info->txq->flags;
        qinfo->conf.tx_free_thresh = txq_info->txq->free_thresh;
+       qinfo->conf.tx_deferred_start = txq_info->deferred_start;
        qinfo->nb_desc = txq_info->entries;
 
        sfc_adapter_unlock(sa);
@@ -935,6 +936,54 @@ sfc_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
        return 0;
 }
 
+static int
+sfc_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
+{
+       struct sfc_adapter *sa = dev->data->dev_private;
+       int rc;
+
+       sfc_log_init(sa, "TxQ = %u", tx_queue_id);
+
+       sfc_adapter_lock(sa);
+
+       rc = EINVAL;
+       if (sa->state != SFC_ADAPTER_STARTED)
+               goto fail_not_started;
+
+       rc = sfc_tx_qstart(sa, tx_queue_id);
+       if (rc != 0)
+               goto fail_tx_qstart;
+
+       sa->txq_info[tx_queue_id].deferred_started = B_TRUE;
+
+       sfc_adapter_unlock(sa);
+       return 0;
+
+fail_tx_qstart:
+
+fail_not_started:
+       sfc_adapter_unlock(sa);
+       SFC_ASSERT(rc > 0);
+       return -rc;
+}
+
+static int
+sfc_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
+{
+       struct sfc_adapter *sa = dev->data->dev_private;
+
+       sfc_log_init(sa, "TxQ = %u", tx_queue_id);
+
+       sfc_adapter_lock(sa);
+
+       sfc_tx_qstop(sa, tx_queue_id);
+
+       sa->txq_info[tx_queue_id].deferred_started = B_FALSE;
+
+       sfc_adapter_unlock(sa);
+       return 0;
+}
+
 static const struct eth_dev_ops sfc_eth_dev_ops = {
        .dev_configure                  = sfc_dev_configure,
        .dev_start                      = sfc_dev_start,
@@ -955,6 +1004,8 @@ static const struct eth_dev_ops sfc_eth_dev_ops = {
        .mtu_set                        = sfc_dev_set_mtu,
        .rx_queue_start                 = sfc_rx_queue_start,
        .rx_queue_stop                  = sfc_rx_queue_stop,
+       .tx_queue_start                 = sfc_tx_queue_start,
+       .tx_queue_stop                  = sfc_tx_queue_stop,
        .rx_queue_setup                 = sfc_rx_queue_setup,
        .rx_queue_release               = sfc_rx_queue_release,
        .rx_queue_count                 = sfc_rx_queue_count,