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net/sfc: support Rx descriptor status on EF10 datapath

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Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ivan Malov <ivan.malov@oktetlabs.ru>
This commit is contained in:
Igor Romanov 2018-10-03 10:03:56 +01:00 committed by Ferruh Yigit
parent 52e10cb09d
commit 1a9d944f5a
2 changed files with 40 additions and 7 deletions
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1
doc/guides/rel_notes/release_18_11.rst
View File

@ -93,6 +93,7 @@ New Features
Updated the sfc_efx driver including the following changes:
* Added support for Rx scatter in EF10 datapath implementation.
* Added support for Rx descriptor status API in EF10 datapath implementation.
* **Updated failsafe driver.**

46
drivers/net/sfc/sfc_ef10_rx.c
View File

@ -500,21 +500,53 @@ sfc_ef10_supported_ptypes_get(uint32_t tunnel_encaps)
static sfc_dp_rx_qdesc_npending_t sfc_ef10_rx_qdesc_npending;
static unsigned int
sfc_ef10_rx_qdesc_npending(__rte_unused struct sfc_dp_rxq *dp_rxq)
sfc_ef10_rx_qdesc_npending(struct sfc_dp_rxq *dp_rxq)
{
struct sfc_ef10_rxq *rxq = sfc_ef10_rxq_by_dp_rxq(dp_rxq);
efx_qword_t rx_ev;
const unsigned int evq_old_read_ptr = rxq->evq_read_ptr;
unsigned int pending = rxq->pending;
unsigned int ready;
if (unlikely(rxq->flags &
(SFC_EF10_RXQ_NOT_RUNNING | SFC_EF10_RXQ_EXCEPTION)))
goto done;
while (sfc_ef10_rx_get_event(rxq, &rx_ev)) {
ready = (EFX_QWORD_FIELD(rx_ev, ESF_DZ_RX_DSC_PTR_LBITS) -
pending) &
EFX_MASK32(ESF_DZ_RX_DSC_PTR_LBITS);
pending += ready;
}
/*
* Correct implementation requires EvQ polling and events
* processing (keeping all ready mbufs in prepared).
* 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
*/
return -ENOTSUP;
rxq->evq_read_ptr = evq_old_read_ptr;
done:
return pending - rxq->completed;
}
static sfc_dp_rx_qdesc_status_t sfc_ef10_rx_qdesc_status;
static int
sfc_ef10_rx_qdesc_status(__rte_unused struct sfc_dp_rxq *dp_rxq,
__rte_unused uint16_t offset)
sfc_ef10_rx_qdesc_status(struct sfc_dp_rxq *dp_rxq, uint16_t offset)
{
return -ENOTSUP;
struct sfc_ef10_rxq *rxq = sfc_ef10_rxq_by_dp_rxq(dp_rxq);
unsigned int npending = sfc_ef10_rx_qdesc_npending(dp_rxq);
if (unlikely(offset > rxq->ptr_mask))
return -EINVAL;
if (offset < npending)
return RTE_ETH_RX_DESC_DONE;
if (offset < (rxq->added - rxq->completed))
return RTE_ETH_RX_DESC_AVAIL;
return RTE_ETH_RX_DESC_UNAVAIL;
}