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net/sfc: support Tx descriptor status on EF10 datapath

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The implementation is shared by ef10 and ef10_simple datapaths.

Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
This commit is contained in:
Igor Romanov 2018-10-05 15:47:03 +01:00 committed by Ferruh Yigit
parent 6bc985e411
commit 2631dced95
2 changed files with 42 additions and 3 deletions
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2
doc/guides/rel_notes/release_18_11.rst
View File

@ -95,6 +95,8 @@ 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.**

43
drivers/net/sfc/sfc_ef10_tx.c
View File

@ -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 = {