From: Igor Romanov <igor.roma...@oktetlabs.ru>
The implemention is shared by ef10 and ef10_simple datapaths.
Signed-off-by: Igor Romanov <igor.roma...@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybche...@solarflare.com>
---
doc/guides/rel_notes/release_18_11.rst | 2 ++
drivers/net/sfc/sfc_ef10_tx.c | 43 ++++++++++++++++++++++++--
2 files changed, 42 insertions(+), 3 deletions(-)
diff --git a/doc/guides/rel_notes/release_18_11.rst
b/doc/guides/rel_notes/release_18_11.rst
index cbf08a76e..60713b921 100644
--- a/doc/guides/rel_notes/release_18_11.rst
+++ b/doc/guides/rel_notes/release_18_11.rst
@@ -89,6 +89,8 @@ New Features
* Added support for Rx scatter in EF10 datapath implementation.
* Added support for Rx descriptor status API in EF10 datapath implementation.
* Added support for TSO in EF10 datapath implementation.
+ * Added support for Tx descriptor status API in EF10 (ef10 and ef10_simple)
+ datapaths implementation.
* **Updated failsafe driver.**
diff --git a/drivers/net/sfc/sfc_ef10_tx.c b/drivers/net/sfc/sfc_ef10_tx.c
index c97e3bad0..bcd3153ff 100644
--- a/drivers/net/sfc/sfc_ef10_tx.c
+++ b/drivers/net/sfc/sfc_ef10_tx.c
@@ -936,12 +936,49 @@ sfc_ef10_tx_qreap(struct sfc_dp_txq *dp_txq)
txq->flags &= ~SFC_EF10_TXQ_STARTED;
}
+static unsigned int
+sfc_ef10_tx_qdesc_npending(struct sfc_ef10_txq *txq)
+{
+ const unsigned int curr_done = txq->completed - 1;
+ unsigned int anew_done = curr_done;
+ efx_qword_t tx_ev;
+ const unsigned int evq_old_read_ptr = txq->evq_read_ptr;
+
+ if (unlikely(txq->flags &
+ (SFC_EF10_TXQ_NOT_RUNNING | SFC_EF10_TXQ_EXCEPTION)))
+ return 0;
+
+ while (sfc_ef10_tx_get_event(txq, &tx_ev))
+ anew_done = EFX_QWORD_FIELD(tx_ev, ESF_DZ_TX_DESCR_INDX);
+
+ /*
+ * The function does not process events, so return event queue read
+ * pointer to the original position to allow the events that were
+ * read to be processed later
+ */
+ txq->evq_read_ptr = evq_old_read_ptr;
+
+ return (anew_done - curr_done) & txq->ptr_mask;
+}
+
static sfc_dp_tx_qdesc_status_t sfc_ef10_tx_qdesc_status;
static int
-sfc_ef10_tx_qdesc_status(__rte_unused struct sfc_dp_txq *dp_txq,
- __rte_unused uint16_t offset)
+sfc_ef10_tx_qdesc_status(struct sfc_dp_txq *dp_txq,
+ uint16_t offset)
{
- return -ENOTSUP;
+ struct sfc_ef10_txq *txq = sfc_ef10_txq_by_dp_txq(dp_txq);
+ unsigned int npending = sfc_ef10_tx_qdesc_npending(txq);
+
+ if (unlikely(offset > txq->ptr_mask))
+ return -EINVAL;
+
+ if (unlikely(offset >= txq->max_fill_level))
+ return RTE_ETH_TX_DESC_UNAVAIL;
+
+ if (unlikely(offset < npending))
+ return RTE_ETH_TX_DESC_FULL;
+
+ return RTE_ETH_TX_DESC_DONE;
}
struct sfc_dp_tx sfc_ef10_tx = {
--
2.17.1
