@@ -38,6 +38,7 @@
#include "sfc_log.h"
#include "sfc_kvargs.h"
#include "sfc_ev.h"
+#include "sfc_rx.h"
static void
@@ -51,6 +52,8 @@ sfc_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
dev_info->max_rx_pktlen = EFX_MAC_PDU_MAX;
+ dev_info->max_rx_queues = sa->rxq_max;
+
/* By default packets are dropped if no descriptors are available */
dev_info->default_rxconf.rx_drop_en = 1;
@@ -193,6 +196,61 @@ sfc_dev_close(struct rte_eth_dev *dev)
sfc_log_init(sa, "done");
}
+static int
+sfc_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
+ uint16_t nb_rx_desc, unsigned int socket_id,
+ const struct rte_eth_rxconf *rx_conf,
+ struct rte_mempool *mb_pool)
+{
+ struct sfc_adapter *sa = dev->data->dev_private;
+ int rc;
+
+ sfc_log_init(sa, "RxQ=%u nb_rx_desc=%u socket_id=%u",
+ rx_queue_id, nb_rx_desc, socket_id);
+
+ sfc_adapter_lock(sa);
+
+ rc = sfc_rx_qinit(sa, rx_queue_id, nb_rx_desc, socket_id,
+ rx_conf, mb_pool);
+ if (rc != 0)
+ goto fail_rx_qinit;
+
+ dev->data->rx_queues[rx_queue_id] = sa->rxq_info[rx_queue_id].rxq;
+
+ sfc_adapter_unlock(sa);
+
+ return 0;
+
+fail_rx_qinit:
+ sfc_adapter_unlock(sa);
+ SFC_ASSERT(rc > 0);
+ return -rc;
+}
+
+static void
+sfc_rx_queue_release(void *queue)
+{
+ struct sfc_rxq *rxq = queue;
+ struct sfc_adapter *sa;
+ unsigned int sw_index;
+
+ if (rxq == NULL)
+ return;
+
+ sa = rxq->evq->sa;
+ sfc_adapter_lock(sa);
+
+ sw_index = sfc_rxq_sw_index(rxq);
+
+ sfc_log_init(sa, "RxQ=%u", sw_index);
+
+ sa->eth_dev->data->rx_queues[sw_index] = NULL;
+
+ sfc_rx_qfini(sa, sw_index);
+
+ sfc_adapter_unlock(sa);
+}
+
static const struct eth_dev_ops sfc_eth_dev_ops = {
.dev_configure = sfc_dev_configure,
.dev_start = sfc_dev_start,
@@ -200,6 +258,8 @@ static const struct eth_dev_ops sfc_eth_dev_ops = {
.dev_close = sfc_dev_close,
.link_update = sfc_dev_link_update,
.dev_infos_get = sfc_dev_infos_get,
+ .rx_queue_setup = sfc_rx_queue_setup,
+ .rx_queue_release = sfc_rx_queue_release,
};
static int
@@ -40,6 +40,7 @@ extern "C" {
#define SFC_MGMT_EVQ_ENTRIES (EFX_EVQ_MINNEVS)
struct sfc_adapter;
+struct sfc_rxq;
enum sfc_evq_state {
SFC_EVQ_UNINITIALIZED = 0,
@@ -56,6 +57,7 @@ struct sfc_evq {
unsigned int read_ptr;
boolean_t exception;
efsys_mem_t mem;
+ struct sfc_rxq *rxq;
/* Not used on datapath */
struct sfc_adapter *sa;
@@ -31,9 +31,148 @@
#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)
{
struct sfc_rxq_info *rxq_info = &sa->rxq_info[sw_index];
@@ -158,6 +297,14 @@ sfc_rx_init(struct sfc_adapter *sa)
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;
@@ -30,11 +30,66 @@
#ifndef _SFC_RX_H
#define _SFC_RX_H
+#include <rte_mbuf.h>
+#include <rte_mempool.h>
+#include <rte_ethdev.h>
+
+#include "efx.h"
+
#ifdef __cplusplus
extern "C" {
#endif
struct sfc_adapter;
+struct sfc_evq;
+
+/**
+ * Software Rx descriptor information associated with hardware Rx
+ * descriptor.
+ */
+struct sfc_rx_sw_desc {
+ struct rte_mbuf *mbuf;
+ unsigned int flags;
+ unsigned int size;
+};
+
+/** Receive queue state bits */
+enum sfc_rxq_state_bit {
+ SFC_RXQ_INITIALIZED_BIT = 0,
+#define SFC_RXQ_INITIALIZED (1 << SFC_RXQ_INITIALIZED_BIT)
+};
+
+/**
+ * Receive queue information used on data path.
+ * Allocated on the socket specified on the queue setup.
+ */
+struct sfc_rxq {
+ /* Used on data path */
+ struct sfc_evq *evq;
+ struct sfc_rx_sw_desc *sw_desc;
+ unsigned int state;
+ unsigned int ptr_mask;
+
+ /* Used on refill */
+ struct rte_mempool *refill_mb_pool;
+ efx_rxq_t *common;
+ efsys_mem_t mem;
+
+ /* Not used on data path */
+ unsigned int hw_index;
+};
+
+static inline unsigned int
+sfc_rxq_sw_index_by_hw_index(unsigned int hw_index)
+{
+ return hw_index;
+}
+
+static inline unsigned int
+sfc_rxq_sw_index(const struct sfc_rxq *rxq)
+{
+ return sfc_rxq_sw_index_by_hw_index(rxq->hw_index);
+}
/**
* Receive queue information used during setup/release only.
@@ -42,11 +97,20 @@ struct sfc_adapter;
*/
struct sfc_rxq_info {
unsigned int max_entries;
+ unsigned int entries;
+ efx_rxq_type_t type;
+ struct sfc_rxq *rxq;
};
int sfc_rx_init(struct sfc_adapter *sa);
void sfc_rx_fini(struct sfc_adapter *sa);
+int sfc_rx_qinit(struct sfc_adapter *sa, unsigned int rx_queue_id,
+ uint16_t nb_rx_desc, unsigned int socket_id,
+ const struct rte_eth_rxconf *rx_conf,
+ struct rte_mempool *mb_pool);
+void sfc_rx_qfini(struct sfc_adapter *sa, unsigned int sw_index);
+
#ifdef __cplusplus
}
#endif