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From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: <dev@dpdk.org>
CC: <thomas.monjalon@6wind.com>, <bruce.richardson@intel.com>,
<ferruh.yigit@intel.com>, Jerin Jacob <jerin.jacob@caviumnetworks.com>,
Maciej Czekaj <maciej.czekaj@caviumnetworks.com>, Kamil Rytarowski
<Kamil.Rytarowski@caviumnetworks.com>, Zyta Szpak <zyta.szpak@semihalf.com>,
Slawomir Rosek <slawomir.rosek@semihalf.com>, Radoslaw Biernacki
<rad@semihalf.com>
Date: Mon, 13 Jun 2016 19:25:32 +0530
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Subject: [dpdk-dev] [PATCH v4 08/19] net/thunderx: add
tx_queue_setup/release support
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Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Signed-off-by: Maciej Czekaj <maciej.czekaj@caviumnetworks.com>
Signed-off-by: Kamil Rytarowski <Kamil.Rytarowski@caviumnetworks.com>
Signed-off-by: Zyta Szpak <zyta.szpak@semihalf.com>
Signed-off-by: Slawomir Rosek <slawomir.rosek@semihalf.com>
Signed-off-by: Radoslaw Biernacki <rad@semihalf.com>
---
drivers/net/thunderx/nicvf_ethdev.c | 175 ++++++++++++++++++++++++++++++++++++
1 file changed, 175 insertions(+)
diff --git a/drivers/net/thunderx/nicvf_ethdev.c b/drivers/net/thunderx/nicvf_ethdev.c
index 4652438..167149e 100644
--- a/drivers/net/thunderx/nicvf_ethdev.c
+++ b/drivers/net/thunderx/nicvf_ethdev.c
@@ -191,6 +191,179 @@ nicvf_qset_cq_alloc(struct nicvf *nic, struct nicvf_rxq *rxq, uint16_t qidx,
return 0;
}
+static int
+nicvf_qset_sq_alloc(struct nicvf *nic, struct nicvf_txq *sq, uint16_t qidx,
+ uint32_t desc_cnt)
+{
+ const struct rte_memzone *rz;
+ uint32_t ring_size = desc_cnt * sizeof(union sq_entry_t);
+
+ rz = rte_eth_dma_zone_reserve(nic->eth_dev, "sq", qidx, ring_size,
+ NICVF_SQ_BASE_ALIGN_BYTES, nic->node);
+ if (rz == NULL) {
+ PMD_INIT_LOG(ERR, "Failed allocate mem for sq hw ring");
+ return -ENOMEM;
+ }
+
+ memset(rz->addr, 0, ring_size);
+
+ sq->phys = rz->phys_addr;
+ sq->desc = rz->addr;
+ sq->qlen_mask = desc_cnt - 1;
+
+ return 0;
+}
+
+static inline void
+nicvf_tx_queue_release_mbufs(struct nicvf_txq *txq)
+{
+ uint32_t head;
+
+ head = txq->head;
+ while (head != txq->tail) {
+ if (txq->txbuffs[head]) {
+ rte_pktmbuf_free_seg(txq->txbuffs[head]);
+ txq->txbuffs[head] = NULL;
+ }
+ head++;
+ head = head & txq->qlen_mask;
+ }
+}
+
+static void
+nicvf_tx_queue_reset(struct nicvf_txq *txq)
+{
+ uint32_t txq_desc_cnt = txq->qlen_mask + 1;
+
+ memset(txq->desc, 0, sizeof(union sq_entry_t) * txq_desc_cnt);
+ memset(txq->txbuffs, 0, sizeof(struct rte_mbuf *) * txq_desc_cnt);
+ txq->tail = 0;
+ txq->head = 0;
+ txq->xmit_bufs = 0;
+}
+
+static void
+nicvf_dev_tx_queue_release(void *sq)
+{
+ struct nicvf_txq *txq;
+
+ PMD_INIT_FUNC_TRACE();
+
+ txq = (struct nicvf_txq *)sq;
+ if (txq) {
+ if (txq->txbuffs != NULL) {
+ nicvf_tx_queue_release_mbufs(txq);
+ rte_free(txq->txbuffs);
+ txq->txbuffs = NULL;
+ }
+ rte_free(txq);
+ }
+}
+
+static int
+nicvf_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t qidx,
+ uint16_t nb_desc, unsigned int socket_id,
+ const struct rte_eth_txconf *tx_conf)
+{
+ uint16_t tx_free_thresh;
+ uint8_t is_single_pool;
+ struct nicvf_txq *txq;
+ struct nicvf *nic = nicvf_pmd_priv(dev);
+
+ PMD_INIT_FUNC_TRACE();
+
+ /* Socket id check */
+ if (socket_id != (unsigned int)SOCKET_ID_ANY && socket_id != nic->node)
+ PMD_DRV_LOG(WARNING, "socket_id expected %d, configured %d",
+ socket_id, nic->node);
+
+ /* Tx deferred start is not supported */
+ if (tx_conf->tx_deferred_start) {
+ PMD_INIT_LOG(ERR, "Tx deferred start not supported");
+ return -EINVAL;
+ }
+
+ /* Roundup nb_desc to available qsize and validate max number of desc */
+ nb_desc = nicvf_qsize_sq_roundup(nb_desc);
+ if (nb_desc == 0) {
+ PMD_INIT_LOG(ERR, "Value of nb_desc beyond available sq qsize");
+ return -EINVAL;
+ }
+
+ /* Validate tx_free_thresh */
+ tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
+ tx_conf->tx_free_thresh :
+ NICVF_DEFAULT_TX_FREE_THRESH);
+
+ if (tx_free_thresh > (nb_desc) ||
+ tx_free_thresh > NICVF_MAX_TX_FREE_THRESH) {
+ PMD_INIT_LOG(ERR,
+ "tx_free_thresh must be less than the number of TX "
+ "descriptors. (tx_free_thresh=%u port=%d "
+ "queue=%d)", (unsigned int)tx_free_thresh,
+ (int)dev->data->port_id, (int)qidx);
+ return -EINVAL;
+ }
+
+ /* Free memory prior to re-allocation if needed. */
+ if (dev->data->tx_queues[qidx] != NULL) {
+ PMD_TX_LOG(DEBUG, "Freeing memory prior to re-allocation %d",
+ qidx);
+ nicvf_dev_tx_queue_release(dev->data->tx_queues[qidx]);
+ dev->data->tx_queues[qidx] = NULL;
+ }
+
+ /* Allocating tx queue data structure */
+ txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct nicvf_txq),
+ RTE_CACHE_LINE_SIZE, nic->node);
+ if (txq == NULL) {
+ PMD_INIT_LOG(ERR, "Failed to allocate txq=%d", qidx);
+ return -ENOMEM;
+ }
+
+ txq->nic = nic;
+ txq->queue_id = qidx;
+ txq->tx_free_thresh = tx_free_thresh;
+ txq->txq_flags = tx_conf->txq_flags;
+ txq->sq_head = nicvf_qset_base(nic, qidx) + NIC_QSET_SQ_0_7_HEAD;
+ txq->sq_door = nicvf_qset_base(nic, qidx) + NIC_QSET_SQ_0_7_DOOR;
+ is_single_pool = (txq->txq_flags & ETH_TXQ_FLAGS_NOREFCOUNT &&
+ txq->txq_flags & ETH_TXQ_FLAGS_NOMULTMEMP);
+
+ /* Choose optimum free threshold value for multipool case */
+ if (!is_single_pool) {
+ txq->tx_free_thresh = (uint16_t)
+ (tx_conf->tx_free_thresh == NICVF_DEFAULT_TX_FREE_THRESH ?
+ NICVF_TX_FREE_MPOOL_THRESH :
+ tx_conf->tx_free_thresh);
+ }
+
+ /* Allocate software ring */
+ txq->txbuffs = rte_zmalloc_socket("txq->txbuffs",
+ nb_desc * sizeof(struct rte_mbuf *),
+ RTE_CACHE_LINE_SIZE, nic->node);
+
+ if (txq->txbuffs == NULL) {
+ nicvf_dev_tx_queue_release(txq);
+ return -ENOMEM;
+ }
+
+ if (nicvf_qset_sq_alloc(nic, txq, qidx, nb_desc)) {
+ PMD_INIT_LOG(ERR, "Failed to allocate mem for sq %d", qidx);
+ nicvf_dev_tx_queue_release(txq);
+ return -ENOMEM;
+ }
+
+ nicvf_tx_queue_reset(txq);
+
+ PMD_TX_LOG(DEBUG, "[%d] txq=%p nb_desc=%d desc=%p phys=0x%" PRIx64,
+ qidx, txq, nb_desc, txq->desc, txq->phys);
+
+ dev->data->tx_queues[qidx] = txq;
+ dev->data->tx_queue_state[qidx] = RTE_ETH_QUEUE_STATE_STOPPED;
+ return 0;
+}
+
static void
nicvf_rx_queue_reset(struct nicvf_rxq *rxq)
{
@@ -430,6 +603,8 @@ static const struct eth_dev_ops nicvf_eth_dev_ops = {
.dev_infos_get = nicvf_dev_info_get,
.rx_queue_setup = nicvf_dev_rx_queue_setup,
.rx_queue_release = nicvf_dev_rx_queue_release,
+ .tx_queue_setup = nicvf_dev_tx_queue_setup,
+ .tx_queue_release = nicvf_dev_tx_queue_release,
.get_reg_length = nicvf_dev_get_reg_length,
.get_reg = nicvf_dev_get_regs,
};
--
2.5.5