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dpaa2-eth: return num_enqueued frames from enqueue callback 

The enqueue dpaa2-eth callback now returns the number of successfully
enqueued frames. This is a preliminary patch necessary for adding
support for bulk ring mode enqueue.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ioana Ciornei 2020-04-22 15:05:10 +03:00 committed by David S. Miller
parent 788f87ac60
commit 48c0481e5a
2 changed files with 26 additions and 13 deletions
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34
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
View File

@ -1,6 +1,6 @@
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/* Copyright 2014-2016 Freescale Semiconductor Inc.
* Copyright 2016-2019 NXP
* Copyright 2016-2020 NXP
*/
#include <linux/init.h>
#include <linux/module.h>
@ -268,7 +268,7 @@ static int xdp_enqueue(struct dpaa2_eth_priv *priv, struct dpaa2_fd *fd,
fq = &priv->fq[queue_id];
for (i = 0; i < DPAA2_ETH_ENQUEUE_RETRIES; i++) {
err = priv->enqueue(priv, fq, fd, 0);
err = priv->enqueue(priv, fq, fd, 0, NULL);
if (err != -EBUSY)
break;
}
@ -847,7 +847,7 @@ static netdev_tx_t dpaa2_eth_tx(struct sk_buff *skb, struct net_device *net_dev)
* the Tx confirmation callback for this frame
*/
for (i = 0; i < DPAA2_ETH_ENQUEUE_RETRIES; i++) {
err = priv->enqueue(priv, fq, &fd, prio);
err = priv->enqueue(priv, fq, &fd, prio, NULL);
if (err != -EBUSY)
break;
}
@ -1937,7 +1937,7 @@ static int dpaa2_eth_xdp_xmit_frame(struct net_device *net_dev,
fq = &priv->fq[smp_processor_id() % dpaa2_eth_queue_count(priv)];
for (i = 0; i < DPAA2_ETH_ENQUEUE_RETRIES; i++) {
err = priv->enqueue(priv, fq, &fd, 0);
err = priv->enqueue(priv, fq, &fd, 0, NULL);
if (err != -EBUSY)
break;
}
@ -2523,19 +2523,31 @@ static int set_buffer_layout(struct dpaa2_eth_priv *priv)
static inline int dpaa2_eth_enqueue_qd(struct dpaa2_eth_priv *priv,
struct dpaa2_eth_fq *fq,
struct dpaa2_fd *fd, u8 prio)
struct dpaa2_fd *fd, u8 prio,
int *frames_enqueued)
{
return dpaa2_io_service_enqueue_qd(fq->channel->dpio,
priv->tx_qdid, prio,
fq->tx_qdbin, fd);
int err;
err = dpaa2_io_service_enqueue_qd(fq->channel->dpio,
priv->tx_qdid, prio,
fq->tx_qdbin, fd);
if (!err && frames_enqueued)
*frames_enqueued = 1;
return err;
}
static inline int dpaa2_eth_enqueue_fq(struct dpaa2_eth_priv *priv,
struct dpaa2_eth_fq *fq,
struct dpaa2_fd *fd, u8 prio)
struct dpaa2_fd *fd, u8 prio,
int *frames_enqueued)
{
return dpaa2_io_service_enqueue_fq(fq->channel->dpio,
fq->tx_fqid[prio], fd);
int err;
err = dpaa2_io_service_enqueue_fq(fq->channel->dpio,
fq->tx_fqid[prio], fd);
if (!err && frames_enqueued)
*frames_enqueued = 1;
return err;
}
static void set_enqueue_mode(struct dpaa2_eth_priv *priv)

5
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
View File

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
/* Copyright 2014-2016 Freescale Semiconductor Inc.
* Copyright 2016 NXP
* Copyright 2016-2020 NXP
*/
#ifndef __DPAA2_ETH_H
@ -371,7 +371,8 @@ struct dpaa2_eth_priv {
struct dpaa2_eth_fq fq[DPAA2_ETH_MAX_QUEUES];
int (*enqueue)(struct dpaa2_eth_priv *priv,
struct dpaa2_eth_fq *fq,
struct dpaa2_fd *fd, u8 prio);
struct dpaa2_fd *fd, u8 prio,
int *frames_enqueued);
u8 num_channels;
struct dpaa2_eth_channel *channel[DPAA2_ETH_MAX_DPCONS];