From: Long Li <lon...@microsoft.com>
MANA allocate device queues through the IB layer when starting TX queues.
When device is stopped all the queues are unmapped and freed.
Signed-off-by: Long Li <lon...@microsoft.com>
---
Change log:
v2:
Add prefix mana_ to all function names.
Remove unused header files.
doc/guides/nics/features/mana.ini | 1 +
drivers/net/mana/mana.h | 4 +
drivers/net/mana/meson.build | 1 +
drivers/net/mana/tx.c | 157 ++++++++++++++++++++++++++++++
4 files changed, 163 insertions(+)
create mode 100644 drivers/net/mana/tx.c
diff --git a/doc/guides/nics/features/mana.ini
b/doc/guides/nics/features/mana.ini
index a59c21cc10..821443b292 100644
--- a/doc/guides/nics/features/mana.ini
+++ b/doc/guides/nics/features/mana.ini
@@ -7,6 +7,7 @@
Link status = P
Linux = Y
Multiprocess aware = Y
+Queue start/stop = Y
Removal event = Y
RSS hash = Y
Speed capabilities = P
diff --git a/drivers/net/mana/mana.h b/drivers/net/mana/mana.h
index d87358ab15..3613ba7ca2 100644
--- a/drivers/net/mana/mana.h
+++ b/drivers/net/mana/mana.h
@@ -379,6 +379,10 @@ uint16_t mana_tx_burst_removed(void *dpdk_rxq, struct
rte_mbuf **pkts,
int gdma_poll_completion_queue(struct mana_gdma_queue *cq,
struct gdma_comp *comp);
+int mana_start_tx_queues(struct rte_eth_dev *dev);
+
+int mana_stop_tx_queues(struct rte_eth_dev *dev);
+
struct mana_mr_cache *mana_find_pmd_mr(struct mana_mr_btree *local_tree,
struct mana_priv *priv,
struct rte_mbuf *mbuf);
diff --git a/drivers/net/mana/meson.build b/drivers/net/mana/meson.build
index 364d57a619..031f443d16 100644
--- a/drivers/net/mana/meson.build
+++ b/drivers/net/mana/meson.build
@@ -11,6 +11,7 @@ deps += ['pci', 'bus_pci', 'net', 'eal', 'kvargs']
sources += files(
'mana.c',
+ 'tx.c',
'mr.c',
'gdma.c',
'mp.c',
diff --git a/drivers/net/mana/tx.c b/drivers/net/mana/tx.c
new file mode 100644
index 0000000000..db7859c8c4
--- /dev/null
+++ b/drivers/net/mana/tx.c
@@ -0,0 +1,157 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2022 Microsoft Corporation
+ */
+
+#include <ethdev_driver.h>
+
+#include <infiniband/verbs.h>
+#include <infiniband/manadv.h>
+
+#include "mana.h"
+
+int mana_stop_tx_queues(struct rte_eth_dev *dev)
+{
+ struct mana_priv *priv = dev->data->dev_private;
+ int i;
+
+ for (i = 0; i < priv->num_queues; i++) {
+ struct mana_txq *txq = dev->data->tx_queues[i];
+
+ if (txq->qp) {
+ ibv_destroy_qp(txq->qp);
+ txq->qp = NULL;
+ }
+
+ if (txq->cq) {
+ ibv_destroy_cq(txq->cq);
+ txq->cq = NULL;
+ }
+
+ /* Drain and free posted WQEs */
+ while (txq->desc_ring_tail != txq->desc_ring_head) {
+ struct mana_txq_desc *desc =
+ &txq->desc_ring[txq->desc_ring_tail];
+
+ rte_pktmbuf_free(desc->pkt);
+
+ txq->desc_ring_tail =
+ (txq->desc_ring_tail + 1) % txq->num_desc;
+ }
+ txq->desc_ring_head = 0;
+ txq->desc_ring_tail = 0;
+
+ memset(&txq->gdma_sq, 0, sizeof(txq->gdma_sq));
+ memset(&txq->gdma_cq, 0, sizeof(txq->gdma_cq));
+ }
+
+ return 0;
+}
+
+int mana_start_tx_queues(struct rte_eth_dev *dev)
+{
+ struct mana_priv *priv = dev->data->dev_private;
+ int ret, i;
+
+ /* start TX queues */
+ for (i = 0; i < priv->num_queues; i++) {
+ struct mana_txq *txq;
+ struct ibv_qp_init_attr qp_attr = { 0 };
+ struct manadv_obj obj = {};
+ struct manadv_qp dv_qp;
+ struct manadv_cq dv_cq;
+
+ txq = dev->data->tx_queues[i];
+
+ manadv_set_context_attr(priv->ib_ctx,
+ MANADV_CTX_ATTR_BUF_ALLOCATORS,
+ (void *)((uintptr_t)&(struct manadv_ctx_allocators){
+ .alloc = &mana_alloc_verbs_buf,
+ .free = &mana_free_verbs_buf,
+ .data = (void *)(uintptr_t)txq->socket,
+ }));
+
+ txq->cq = ibv_create_cq(priv->ib_ctx, txq->num_desc,
+ NULL, NULL, 0);
+ if (!txq->cq) {
+ DRV_LOG(ERR, "failed to create cq queue index %d", i);
+ ret = -errno;
+ goto fail;
+ }
+
+ qp_attr.send_cq = txq->cq;
+ qp_attr.recv_cq = txq->cq;
+ qp_attr.cap.max_send_wr = txq->num_desc;
+ qp_attr.cap.max_send_sge = priv->max_send_sge;
+
+ /* Skip setting qp_attr.cap.max_inline_data */
+
+ qp_attr.qp_type = IBV_QPT_RAW_PACKET;
+ qp_attr.sq_sig_all = 0;
+
+ txq->qp = ibv_create_qp(priv->ib_parent_pd, &qp_attr);
+ if (!txq->qp) {
+ DRV_LOG(ERR, "Failed to create qp queue index %d", i);
+ ret = -errno;
+ goto fail;
+ }
+
+ /* Get the addresses of CQ, QP and DB */
+ obj.qp.in = txq->qp;
+ obj.qp.out = &dv_qp;
+ obj.cq.in = txq->cq;
+ obj.cq.out = &dv_cq;
+ ret = manadv_init_obj(&obj, MANADV_OBJ_QP | MANADV_OBJ_CQ);
+ if (ret) {
+ DRV_LOG(ERR, "Failed to get manadv objects");
+ goto fail;
+ }
+
+ txq->gdma_sq.buffer = obj.qp.out->sq_buf;
+ txq->gdma_sq.count = obj.qp.out->sq_count;
+ txq->gdma_sq.size = obj.qp.out->sq_size;
+ txq->gdma_sq.id = obj.qp.out->sq_id;
+
+ txq->tx_vp_offset = obj.qp.out->tx_vp_offset;
+ priv->db_page = obj.qp.out->db_page;
+ DRV_LOG(INFO, "txq sq id %u vp_offset %u db_page %p "
+ " buf %p count %u size %u",
+ txq->gdma_sq.id, txq->tx_vp_offset,
+ priv->db_page,
+ txq->gdma_sq.buffer, txq->gdma_sq.count,
+ txq->gdma_sq.size);
+
+ txq->gdma_cq.buffer = obj.cq.out->buf;
+ txq->gdma_cq.count = obj.cq.out->count;
+ txq->gdma_cq.size = txq->gdma_cq.count * COMP_ENTRY_SIZE;
+ txq->gdma_cq.id = obj.cq.out->cq_id;
+
+ /* CQ head starts with count (not 0) */
+ txq->gdma_cq.head = txq->gdma_cq.count;
+
+ DRV_LOG(INFO, "txq cq id %u buf %p count %u size %u head %u",
+ txq->gdma_cq.id, txq->gdma_cq.buffer,
+ txq->gdma_cq.count, txq->gdma_cq.size,
+ txq->gdma_cq.head);
+ }
+
+ return 0;
+
+fail:
+ mana_stop_tx_queues(dev);
+ return ret;
+}
+
+static inline uint16_t get_vsq_frame_num(uint32_t vsq)
+{
+ union {
+ uint32_t gdma_txq_id;
+ struct {
+ uint32_t reserved1 : 10;
+ uint32_t vsq_frame : 14;
+ uint32_t reserved2 : 8;
+ };
+ } v;
+
+ v.gdma_txq_id = vsq;
+ return v.vsq_frame;
+}
--
2.17.1
