[PATCH v5-S3 07/14] drivers: net/dpaa2 rework Tx queue mapping
Prashant Gupta
prashant.gupta_3 at nxp.com
Fri Oct 30 06:20:09 CET 2026
From: Jun Yang <jun.yang at nxp.com>
Replace the legacy Tx queue mapping derived directly from the
queue index with an explicit TC/flow based mapping.
Instead of computing the traffic class from the queue number
and always using flow 0, each Tx queue now carries a
preconfigured tc_index and flow_id which are used when
programming the corresponding DPNI queue.
Update channel selection to distribute Tx queues across the
available channels based on the queue index.
As a result:
- traffic class assignment is driven by tc_index;
- flow assignment is driven by flow_id;
- channel assignment is derived from the Tx queue index.
This provides an explicit mapping between software Tx queues
and hardware TC/flow resources while distributing queues
across available channels.
Signed-off-by: Jun Yang <jun.yang at nxp.com>
---
drivers/bus/fslmc/portal/dpaa2_hw_pvt.h | 2 +-
drivers/net/dpaa2/dpaa2_ethdev.c | 117 ++++++++++++++----------
drivers/net/dpaa2/dpaa2_ethdev.h | 5 +-
3 files changed, 75 insertions(+), 49 deletions(-)
diff --git a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
index 556e1b01c0..52e6aa0bab 100644
--- a/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
+++ b/drivers/bus/fslmc/portal/dpaa2_hw_pvt.h
@@ -82,7 +82,7 @@
#define DPAA2_PACKET_LAYOUT_ALIGN 64 /*changing from 256 */
#define DPAA2_DPCI_MAX_QUEUES 2
-#define DPAA2_INVALID_FLOW_ID 0xffff
+#define DPAA2_INVALID_FQ_ID ((uint32_t)(-1))
#define DPAA2_INVALID_CGID 0xff
#define SEC_FLC_DHR_OUTBOUND (-114)
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index f551b9731e..6f475baa79 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -571,17 +571,13 @@ static int
dpaa2_alloc_rx_tx_queues(struct rte_eth_dev *dev)
{
struct dpaa2_dev_priv *priv = dev->data->dev_private;
- uint16_t dist_idx;
- uint32_t vq_id;
- uint8_t num_rxqueue_per_tc;
- struct dpaa2_queue *mc_q, *mcq;
+ uint8_t num_queue_per_tc;
+ struct dpaa2_queue *mc_q, *dpaa2_q;
uint32_t tot_queues;
int i, ret = 0;
- struct dpaa2_queue *dpaa2_q;
PMD_INIT_FUNC_TRACE();
- num_rxqueue_per_tc = (priv->nb_rx_queues / priv->num_rx_tc);
if (priv->flags & DPAA2_TX_CONF_ENABLE)
tot_queues = priv->nb_rx_queues + 2 * priv->nb_tx_queues;
else
@@ -593,8 +589,12 @@ dpaa2_alloc_rx_tx_queues(struct rte_eth_dev *dev)
return -ENOBUFS;
}
+ num_queue_per_tc = (priv->nb_rx_queues / priv->num_rx_tc);
for (i = 0; i < priv->nb_rx_queues; i++) {
mc_q->eth_data = dev->data;
+ mc_q->tc_index = i / num_queue_per_tc;
+ mc_q->flow_id = i % num_queue_per_tc;
+ mc_q->fqid = DPAA2_INVALID_FQ_ID;
priv->rx_vq[i] = mc_q++;
dpaa2_q = priv->rx_vq[i];
ret = dpaa2_queue_storage_alloc(dpaa2_q,
@@ -618,9 +618,12 @@ dpaa2_alloc_rx_tx_queues(struct rte_eth_dev *dev)
goto fail;
}
+ num_queue_per_tc = (priv->nb_tx_queues / priv->num_tx_tc);
for (i = 0; i < priv->nb_tx_queues; i++) {
mc_q->eth_data = dev->data;
- mc_q->flow_id = DPAA2_INVALID_FLOW_ID;
+ mc_q->tc_index = i / num_queue_per_tc;
+ mc_q->flow_id = i % num_queue_per_tc;
+ mc_q->fqid = DPAA2_INVALID_FQ_ID;
priv->tx_vq[i] = mc_q++;
dpaa2_q = (struct dpaa2_queue *)priv->tx_vq[i];
dpaa2_q->cscn = rte_malloc(NULL,
@@ -635,8 +638,9 @@ dpaa2_alloc_rx_tx_queues(struct rte_eth_dev *dev)
/*Setup tx confirmation queues*/
for (i = 0; i < priv->nb_tx_queues; i++) {
mc_q->eth_data = dev->data;
- mc_q->tc_index = i;
- mc_q->flow_id = 0;
+ mc_q->tc_index = i / num_queue_per_tc;
+ mc_q->flow_id = i % num_queue_per_tc;
+ mc_q->fqid = DPAA2_INVALID_FQ_ID;
priv->tx_conf_vq[i] = mc_q++;
dpaa2_q = priv->tx_conf_vq[i];
ret = dpaa2_queue_storage_alloc(dpaa2_q,
@@ -646,14 +650,6 @@ dpaa2_alloc_rx_tx_queues(struct rte_eth_dev *dev)
}
}
- vq_id = 0;
- for (dist_idx = 0; dist_idx < priv->nb_rx_queues; dist_idx++) {
- mcq = priv->rx_vq[vq_id];
- mcq->tc_index = dist_idx / num_rxqueue_per_tc;
- mcq->flow_id = dist_idx % num_rxqueue_per_tc;
- vq_id++;
- }
-
return 0;
fail_tx_conf:
i -= 1;
@@ -1029,6 +1025,12 @@ dpaa2_dev_rx_queue_setup(struct rte_eth_dev *dev,
return ret;
}
dpaa2_q = priv->rx_vq[rx_queue_id];
+ if (dpaa2_q->fqid != DPAA2_INVALID_FQ_ID) {
+ DPAA2_PMD_WARN("%s: RXQ[%d] has been setup",
+ dev->data->name, rx_queue_id);
+ dev->data->rx_queues[rx_queue_id] = dpaa2_q;
+ return 0;
+ }
dpaa2_q->mb_pool = mb_pool; /**< mbuf pool to populate RX ring. */
dpaa2_q->bp_array = rte_dpaa2_bpid_info;
dpaa2_q->offloads = rx_conf->offloads;
@@ -1217,7 +1219,9 @@ dpaa2_dev_tx_queue_setup(struct rte_eth_dev *dev,
dpaa2_q->offloads = tx_conf->offloads;
/* Return if queue already configured */
- if (dpaa2_q->flow_id != DPAA2_INVALID_FLOW_ID) {
+ if (dpaa2_q->fqid != DPAA2_INVALID_FQ_ID) {
+ DPAA2_PMD_WARN("%s: TXQ[%d] has been setup",
+ dev->data->name, tx_queue_id);
dev->data->tx_queues[tx_queue_id] = dpaa2_q;
return 0;
}
@@ -1225,26 +1229,20 @@ dpaa2_dev_tx_queue_setup(struct rte_eth_dev *dev,
memset(&tx_conf_cfg, 0, sizeof(struct dpni_queue));
memset(&tx_flow_cfg, 0, sizeof(struct dpni_queue));
- tc_id = tx_queue_id % priv->num_tx_tc;
- channel_id = (uint8_t)(tx_queue_id / priv->num_tx_tc) % priv->num_channels;
- flow_id = 0;
-
+ tc_id = dpaa2_q->tc_index;
+ flow_id = dpaa2_q->flow_id;
+ channel_id = tx_queue_id % priv->num_channels;
ret = dpni_set_queue(dpni, CMD_PRI_LOW, priv->token, DPNI_QUEUE_TX,
- ((channel_id << 8) | tc_id), flow_id, options, &tx_flow_cfg);
+ DPNI_BUILD_PARAM(channel_id, tc_id), flow_id, options, &tx_flow_cfg);
if (ret) {
- DPAA2_PMD_ERR("Error in setting the tx flow: "
- "tc_id=%d, flow=%d err=%d",
- tc_id, flow_id, ret);
- return ret;
+ DPAA2_PMD_ERR("Failed(%d) to set %s's TC[%d].txq[%d].ch[%d]",
+ ret, dev->data->name, tc_id, flow_id, channel_id);
+ return ret;
}
- dpaa2_q->flow_id = flow_id;
-
- dpaa2_q->tc_index = tc_id;
-
ret = dpni_get_queue(dpni, CMD_PRI_LOW, priv->token,
- DPNI_QUEUE_TX, ((channel_id << 8) | dpaa2_q->tc_index),
- dpaa2_q->flow_id, &tx_flow_cfg, &qid);
+ DPNI_QUEUE_TX, DPNI_BUILD_PARAM(channel_id, tc_id),
+ flow_id, &tx_flow_cfg, &qid);
if (ret) {
DPAA2_PMD_ERR("Error in getting LFQID err=%d", ret);
return ret;
@@ -1283,10 +1281,9 @@ dpaa2_dev_tx_queue_setup(struct rte_eth_dev *dev,
ret = dpni_set_congestion_notification(dpni,
CMD_PRI_LOW, priv->token, DPNI_QUEUE_TX,
- ((channel_id << 8) | tc_id), &cong_notif_cfg);
+ DPNI_BUILD_PARAM(channel_id, tc_id), &cong_notif_cfg);
if (ret) {
- DPAA2_PMD_ERR("Set TX congestion notification err=%d",
- ret);
+ DPAA2_PMD_ERR("Set TX congestion notification err=%d", ret);
return ret;
}
}
@@ -1294,31 +1291,32 @@ dpaa2_dev_tx_queue_setup(struct rte_eth_dev *dev,
dev->data->tx_queues[tx_queue_id] = dpaa2_q;
if (priv->flags & DPAA2_TX_CONF_ENABLE) {
+ tc_id = dpaa2_tx_conf_q->tc_index;
+ flow_id = dpaa2_tx_conf_q->flow_id;
dpaa2_q->tx_conf_queue = dpaa2_tx_conf_q;
options = options | DPNI_QUEUE_OPT_USER_CTX;
tx_conf_cfg.user_context = (size_t)(dpaa2_q);
ret = dpni_set_queue(dpni, CMD_PRI_LOW, priv->token,
DPNI_QUEUE_TX_CONFIRM,
- ((channel_id << 8) | dpaa2_tx_conf_q->tc_index),
- dpaa2_tx_conf_q->flow_id,
- options, &tx_conf_cfg);
+ DPNI_BUILD_PARAM(channel_id, tc_id),
+ flow_id, options, &tx_conf_cfg);
if (ret) {
DPAA2_PMD_ERR("Set TC[%d].TX[%d] conf flow err=%d",
- dpaa2_tx_conf_q->tc_index,
- dpaa2_tx_conf_q->flow_id, ret);
+ tc_id, flow_id, ret);
return ret;
}
ret = dpni_get_queue(dpni, CMD_PRI_LOW, priv->token,
DPNI_QUEUE_TX_CONFIRM,
- ((channel_id << 8) | dpaa2_tx_conf_q->tc_index),
- dpaa2_tx_conf_q->flow_id, &tx_conf_cfg, &qid);
+ DPNI_BUILD_PARAM(channel_id, tc_id),
+ flow_id, &tx_conf_cfg, &qid);
if (ret) {
DPAA2_PMD_ERR("Error in getting LFQID err=%d", ret);
return ret;
}
dpaa2_tx_conf_q->fqid = qid.fqid;
}
+
return 0;
}
@@ -1377,6 +1375,8 @@ dpaa2_dev_rx_queue_release(struct rte_eth_dev *dev, uint16_t rx_queue_id)
/* keep the DPCON on the FQ across a reconfigure; freed at dev_close */
if (dpaa2_q->napi_dpcon)
dpaa2_dev_rx_queue_intr_unbind(dpaa2_q);
+
+ dpaa2_q->fqid = DPAA2_INVALID_FQ_ID;
}
static int
@@ -3455,6 +3455,7 @@ dpaa2_dev_init(struct rte_eth_dev *eth_dev)
struct dpaa2_dev_priv *priv = eth_dev->data->dev_private;
struct dpni_buffer_layout layout;
int ret, hw_id, i;
+ uint16_t num_q_per_tc, max_q_per_tc;
PMD_INIT_FUNC_TRACE();
@@ -3553,10 +3554,34 @@ dpaa2_dev_init(struct rte_eth_dev *eth_dev)
for (i = 0; i < priv->max_cgs; i++)
priv->cgid_in_use[i] = 0;
- for (i = 0; i < attr.num_rx_tcs; i++)
- priv->nb_rx_queues += attr.num_queues;
+ num_q_per_tc = attr.num_queues;
+ max_q_per_tc = MAX_RX_QUEUES / attr.num_rx_tcs;
+
+ if (num_q_per_tc > max_q_per_tc) {
+ DPAA2_PMD_WARN("Too many RXQs per TC(%u) > %u, reduce it to %u",
+ num_q_per_tc, max_q_per_tc, max_q_per_tc);
+ num_q_per_tc = max_q_per_tc;
+ }
+ priv->nb_rx_queues = attr.num_rx_tcs * num_q_per_tc;
- priv->nb_tx_queues = attr.num_tx_tcs * attr.num_channels;
+ max_q_per_tc = MAX_TX_QUEUES / attr.num_tx_tcs;
+ if (attr.options & DPNI_OPT_SINGLE_SENDER)
+ num_q_per_tc = 1;
+ else
+ num_q_per_tc = attr.num_queues;
+ if (num_q_per_tc > max_q_per_tc) {
+ DPAA2_PMD_WARN("Too many TXQs per TC(%u) > %u, reduce it to %u",
+ num_q_per_tc, max_q_per_tc, max_q_per_tc);
+ num_q_per_tc = max_q_per_tc;
+ }
+ priv->nb_tx_queues = attr.num_tx_tcs * num_q_per_tc;
+ if (priv->num_channels > DPAA2_MAX_CHANNELS) {
+ DPAA2_PMD_WARN("Too many TX channels(%d) > %d, reduce it to %d",
+ priv->num_channels, DPAA2_MAX_CHANNELS, DPAA2_MAX_CHANNELS);
+ priv->num_channels = DPAA2_MAX_CHANNELS;
+ }
+ for (i = 0; i < priv->num_channels; i++)
+ priv->tx_channels[i] = i;
DPAA2_PMD_DEBUG("RX-TC= %d, rx_queues= %d, tx_queues=%d, max_cgs=%d",
priv->num_rx_tc, priv->nb_rx_queues,
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.h b/drivers/net/dpaa2/dpaa2_ethdev.h
index b01e08b7b1..6f4fd01e2f 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.h
+++ b/drivers/net/dpaa2/dpaa2_ethdev.h
@@ -30,7 +30,7 @@
#define MAX_TCS DPNI_MAX_TC
#define MAX_RX_QUEUES 128
-#define MAX_TX_QUEUES 16
+#define MAX_TX_QUEUES 128
#define MAX_DPNI 8
#define DPAA2_MAX_CHANNELS 16
@@ -431,13 +431,14 @@ struct dpaa2_dev_priv {
int32_t hw_id;
int32_t qdid;
uint16_t token;
+ uint16_t tx_channels[DPAA2_MAX_CHANNELS];
uint8_t nb_tx_queues;
uint8_t nb_rx_queues;
uint32_t options;
void *rx_vq[MAX_RX_QUEUES];
void *tx_vq[MAX_TX_QUEUES];
struct dpaa2_bp_list *bp_list; /**<Attached buffer pool list */
- void *tx_conf_vq[MAX_TX_QUEUES * DPAA2_MAX_CHANNELS];
+ void *tx_conf_vq[MAX_TX_QUEUES];
void *rx_err_vq;
uint32_t flags; /*dpaa2 config flags */
uint32_t psr_dynfield_offset;
--
2.43.0
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