#include "sfc.h"
#include "sfc_log.h"
+#include "sfc_ev.h"
#include "sfc_rx.h"
+static int
+sfc_rx_qcheck_conf(struct sfc_adapter *sa,
+ const struct rte_eth_rxconf *rx_conf)
+{
+ int rc = 0;
+
+ if (rx_conf->rx_thresh.pthresh != 0 ||
+ rx_conf->rx_thresh.hthresh != 0 ||
+ rx_conf->rx_thresh.wthresh != 0) {
+ sfc_err(sa,
+ "RxQ prefetch/host/writeback thresholds are not supported");
+ rc = EINVAL;
+ }
+
+ if (rx_conf->rx_free_thresh != 0) {
+ sfc_err(sa, "RxQ free threshold is not supported");
+ rc = EINVAL;
+ }
+
+ if (rx_conf->rx_drop_en == 0) {
+ sfc_err(sa, "RxQ drop disable is not supported");
+ rc = EINVAL;
+ }
+
+ if (rx_conf->rx_deferred_start != 0) {
+ sfc_err(sa, "RxQ deferred start is not supported");
+ rc = EINVAL;
+ }
+
+ return rc;
+}
+
+int
+sfc_rx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
+ uint16_t nb_rx_desc, unsigned int socket_id,
+ const struct rte_eth_rxconf *rx_conf,
+ struct rte_mempool *mb_pool)
+{
+ int rc;
+ struct sfc_rxq_info *rxq_info;
+ unsigned int evq_index;
+ struct sfc_evq *evq;
+ struct sfc_rxq *rxq;
+
+ rc = sfc_rx_qcheck_conf(sa, rx_conf);
+ if (rc != 0)
+ goto fail_bad_conf;
+
+ if (rte_pktmbuf_data_room_size(mb_pool) <= RTE_PKTMBUF_HEADROOM) {
+ sfc_err(sa, "RxQ %u mbuf is too small, %u vs headroom %u",
+ sw_index, rte_pktmbuf_data_room_size(mb_pool),
+ RTE_PKTMBUF_HEADROOM);
+ goto fail_bad_conf;
+ }
+
+ SFC_ASSERT(sw_index < sa->rxq_count);
+ rxq_info = &sa->rxq_info[sw_index];
+
+ SFC_ASSERT(nb_rx_desc <= rxq_info->max_entries);
+ rxq_info->entries = nb_rx_desc;
+ rxq_info->type = EFX_RXQ_TYPE_DEFAULT;
+
+ evq_index = sfc_evq_index_by_rxq_sw_index(sa, sw_index);
+
+ rc = sfc_ev_qinit(sa, evq_index, rxq_info->entries, socket_id);
+ if (rc != 0)
+ goto fail_ev_qinit;
+
+ evq = sa->evq_info[evq_index].evq;
+
+ rc = ENOMEM;
+ rxq = rte_zmalloc_socket("sfc-rxq", sizeof(*rxq), RTE_CACHE_LINE_SIZE,
+ socket_id);
+ if (rxq == NULL)
+ goto fail_rxq_alloc;
+
+ rc = sfc_dma_alloc(sa, "rxq", sw_index, EFX_RXQ_SIZE(rxq_info->entries),
+ socket_id, &rxq->mem);
+ if (rc != 0)
+ goto fail_dma_alloc;
+
+ rc = ENOMEM;
+ rxq->sw_desc = rte_calloc_socket("sfc-rxq-sw_desc", rxq_info->entries,
+ sizeof(*rxq->sw_desc),
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (rxq->sw_desc == NULL)
+ goto fail_desc_alloc;
+
+ evq->rxq = rxq;
+ rxq->evq = evq;
+ rxq->ptr_mask = rxq_info->entries - 1;
+ rxq->refill_mb_pool = mb_pool;
+ rxq->hw_index = sw_index;
+
+ rxq->state = SFC_RXQ_INITIALIZED;
+
+ rxq_info->rxq = rxq;
+
+ return 0;
+
+fail_desc_alloc:
+ sfc_dma_free(sa, &rxq->mem);
+
+fail_dma_alloc:
+ rte_free(rxq);
+
+fail_rxq_alloc:
+ sfc_ev_qfini(sa, evq_index);
+
+fail_ev_qinit:
+ rxq_info->entries = 0;
+
+fail_bad_conf:
+ sfc_log_init(sa, "failed %d", rc);
+ return rc;
+}
+
+void
+sfc_rx_qfini(struct sfc_adapter *sa, unsigned int sw_index)
+{
+ struct sfc_rxq_info *rxq_info;
+ struct sfc_rxq *rxq;
+
+ SFC_ASSERT(sw_index < sa->rxq_count);
+
+ rxq_info = &sa->rxq_info[sw_index];
+
+ rxq = rxq_info->rxq;
+ SFC_ASSERT(rxq->state == SFC_RXQ_INITIALIZED);
+
+ rxq_info->rxq = NULL;
+ rxq_info->entries = 0;
+
+ rte_free(rxq->sw_desc);
+ sfc_dma_free(sa, &rxq->mem);
+ rte_free(rxq);
+}
+
static int
sfc_rx_qinit_info(struct sfc_adapter *sa, unsigned int sw_index)
{
void
sfc_rx_fini(struct sfc_adapter *sa)
{
+ unsigned int sw_index;
+
+ sw_index = sa->rxq_count;
+ while (sw_index-- > 0) {
+ if (sa->rxq_info[sw_index].rxq != NULL)
+ sfc_rx_qfini(sa, sw_index);
+ }
+
rte_free(sa->rxq_info);
sa->rxq_info = NULL;
sa->rxq_count = 0;