diff options
| author |   Doug Berger <opendmb@gmail.com> | 2019-12-17 16:51:15 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-12-19 18:11:10 -0800 |
| commit | f1af17c0b7a51357699bba7c8cba1276c9486907 (patch) | |
| tree | 4b0891007774619c54d881d34f9de5c824991cb3 /drivers/net/ethernet | |
| parent | net: bcmgenet: Be drop monitor friendly while re-allocating headroom (diff) | |
| download | linux-dev-f1af17c0b7a51357699bba7c8cba1276c9486907.tar.xz linux-dev-f1af17c0b7a51357699bba7c8cba1276c9486907.zip | |
net: bcmgenet: Add software counters to track reallocations
When inserting the TSB, keep track of how many times we had to do
it and if there was a failure in doing so, this helps profile the
driver for possibly incorrect headroom settings.
Signed-off-by: Doug Berger <opendmb@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/broadcom/genet/bcmgenet.c | 6 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/genet/bcmgenet.h | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index e2bca19bf10b..3ee7917e3fc0 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -861,6 +861,9 @@ static const struct bcmgenet_stats bcmgenet_gstrings_stats[] = { STAT_GENET_SOFT_MIB("alloc_rx_buff_failed", mib.alloc_rx_buff_failed), STAT_GENET_SOFT_MIB("rx_dma_failed", mib.rx_dma_failed), STAT_GENET_SOFT_MIB("tx_dma_failed", mib.tx_dma_failed), + STAT_GENET_SOFT_MIB("tx_realloc_tsb", mib.tx_realloc_tsb), + STAT_GENET_SOFT_MIB("tx_realloc_tsb_failed", + mib.tx_realloc_tsb_failed), /* Per TX queues */ STAT_GENET_Q(0), STAT_GENET_Q(1), @@ -1487,6 +1490,7 @@ static void bcmgenet_tx_reclaim_all(struct net_device *dev) static struct sk_buff *bcmgenet_put_tx_csum(struct net_device *dev, struct sk_buff *skb) { + struct bcmgenet_priv *priv = netdev_priv(dev); struct status_64 *status = NULL; struct sk_buff *new_skb; u16 offset; @@ -1501,11 +1505,13 @@ static struct sk_buff *bcmgenet_put_tx_csum(struct net_device *dev, new_skb = skb_realloc_headroom(skb, sizeof(*status)); if (!new_skb) { dev_kfree_skb_any(skb); + priv->mib.tx_realloc_tsb_failed++; dev->stats.tx_dropped++; return NULL; } dev_consume_skb_any(skb); skb = new_skb; + priv->mib.tx_realloc_tsb++; } skb_push(skb, sizeof(*status)); diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h index d33c0d093f82..61a6fe9f4cec 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h @@ -144,6 +144,8 @@ struct bcmgenet_mib_counters { u32 alloc_rx_buff_failed; u32 rx_dma_failed; u32 tx_dma_failed; + u32 tx_realloc_tsb; + u32 tx_realloc_tsb_failed; }; #define UMAC_HD_BKP_CTRL 0x004 |