Commit 15c87f6b authored by Ioana Radulescu's avatar Ioana Radulescu Committed by David S. Miller
Browse files

dpaa2-eth: Support multiple traffic classes on Tx

DPNI objects can have multiple traffic classes, as reflected by
the num_tc attribute. Until now we ignored its value and only
used traffic class 0.

This patch adds support for multiple Tx traffic classes; we have
num_queues x num_tcs hardware queues available for each interface.

Signed-off-by: default avatarIoana Radulescu <>
Signed-off-by: default avatarDavid S. Miller <>
parent 06d5b179
......@@ -2371,11 +2371,10 @@ static inline int dpaa2_eth_enqueue_qd(struct dpaa2_eth_priv *priv,
static inline int dpaa2_eth_enqueue_fq(struct dpaa2_eth_priv *priv,
struct dpaa2_eth_fq *fq,
struct dpaa2_fd *fd,
u8 prio __always_unused)
struct dpaa2_fd *fd, u8 prio)
return dpaa2_io_service_enqueue_fq(fq->channel->dpio,
fq->tx_fqid, fd);
fq->tx_fqid[prio], fd);
static void set_enqueue_mode(struct dpaa2_eth_priv *priv)
......@@ -2531,17 +2530,21 @@ static int setup_tx_flow(struct dpaa2_eth_priv *priv,
struct device *dev = priv->net_dev->dev.parent;
struct dpni_queue queue;
struct dpni_queue_id qid;
int err;
int i, err;
err = dpni_get_queue(priv->mc_io, 0, priv->mc_token,
DPNI_QUEUE_TX, 0, fq->flowid, &queue, &qid);
if (err) {
dev_err(dev, "dpni_get_queue(TX) failed\n");
return err;
for (i = 0; i < dpaa2_eth_tc_count(priv); i++) {
err = dpni_get_queue(priv->mc_io, 0, priv->mc_token,
DPNI_QUEUE_TX, i, fq->flowid,
&queue, &qid);
if (err) {
dev_err(dev, "dpni_get_queue(TX) failed\n");
return err;
fq->tx_fqid[i] = qid.fqid;
/* All Tx queues belonging to the same flowid have the same qdbin */
fq->tx_qdbin = qid.qdbin;
fq->tx_fqid = qid.fqid;
err = dpni_get_queue(priv->mc_io, 0, priv->mc_token,
DPNI_QUEUE_TX_CONFIRM, 0, fq->flowid,
......@@ -282,6 +282,7 @@ struct dpaa2_eth_ch_stats {
/* Maximum number of queues associated with a DPNI */
#define DPAA2_ETH_MAX_TCS 8
......@@ -299,8 +300,9 @@ struct dpaa2_eth_priv;
struct dpaa2_eth_fq {
u32 fqid;
u32 tx_qdbin;
u32 tx_fqid;
u32 tx_fqid[DPAA2_ETH_MAX_TCS];
u16 flowid;
u8 tc;
int target_cpu;
u32 dq_frames;
u32 dq_bytes;
......@@ -448,6 +450,9 @@ static inline int dpaa2_eth_cmp_dpni_ver(struct dpaa2_eth_priv *priv,
#define dpaa2_eth_fs_count(priv) \
#define dpaa2_eth_tc_count(priv) \
/* We have exactly one {Rx, Tx conf} queue per channel */
#define dpaa2_eth_queue_count(priv) \
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