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dpaa2-eth: add channel stat to debugfs

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Compute the average number of frames processed for each CDAN (Channel
Data Availability Notification) and export it to debugfs detailed
channel stats.

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 2020-04-24 12:33:18 +03:00 committed by David S. Miller
parent ae23aae229
commit 460fd830dd
4 changed files with 10 additions and 4 deletions
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9
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c
View file

@ -127,16 +127,19 @@ static int dpaa2_dbg_ch_show(struct seq_file *file, void *offset)
int i;
seq_printf(file, "Channel stats for %s:\n", priv->net_dev->name);
seq_printf(file, "%s%16s%16s%16s%16s\n",
"CHID", "CPU", "Deq busy", "CDANs", "Buf count");
seq_printf(file, "%s%16s%16s%16s%16s%16s%16s\n",
"CHID", "CPU", "Deq busy", "Frames", "CDANs",
"Avg Frm/CDAN", "Buf count");
for (i = 0; i < priv->num_channels; i++) {
ch = priv->channel[i];
seq_printf(file, "%4d%16d%16llu%16llu%16d\n",
seq_printf(file, "%4d%16d%16llu%16llu%16llu%16llu%16d\n",
ch->ch_id,
ch->nctx.desired_cpu,
ch->stats.dequeue_portal_busy,
ch->stats.frames,
ch->stats.cdan,
ch->stats.frames / ch->stats.cdan,
ch->buf_count);
}

1
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
View file

@ -493,6 +493,7 @@ static int consume_frames(struct dpaa2_eth_channel *ch,
return 0;
fq->stats.frames += cleaned;
ch->stats.frames += cleaned;
/* A dequeue operation only pulls frames from a single queue
* into the store. Return the frame queue as an out param.

2
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
View file

@ -288,6 +288,8 @@ struct dpaa2_eth_ch_stats {
__u64 xdp_tx;
__u64 xdp_tx_err;
__u64 xdp_redirect;
/* Must be last, does not show up in ethtool stats */
__u64 frames;
};
/* Maximum number of queues associated with a DPNI */

2
drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
View file

@ -277,7 +277,7 @@ static void dpaa2_eth_get_ethtool_stats(struct net_device *net_dev,
/* Per-channel stats */
for (k = 0; k < priv->num_channels; k++) {
ch_stats = &priv->channel[k]->stats;
for (j = 0; j < sizeof(*ch_stats) / sizeof(__u64); j++)
for (j = 0; j < sizeof(*ch_stats) / sizeof(__u64) - 1; j++)
*((__u64 *)data + i + j) += *((__u64 *)ch_stats + j);
}
i += j;