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| author |   Florian Fainelli <f.fainelli@gmail.com> | 2018-09-27 15:36:14 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-10-01 23:11:53 -0700 |
| commit | a5d78ce7936c9f6fd5a75c1d6b51587c6d05e7b3 (patch) | |
| tree | cea668d56d068aff9a40fcf16a8c7024d406b8f4 /drivers/net/ethernet/broadcom/bcmsysport.c | |
| parent | net: systemport: Be drop monitor friendly while re-allocating headroom (diff) | |
| download | linux-dev-a5d78ce7936c9f6fd5a75c1d6b51587c6d05e7b3.tar.xz linux-dev-a5d78ce7936c9f6fd5a75c1d6b51587c6d05e7b3.zip | |
net: systemport: 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: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bcmsysport.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bcmsysport.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index 6c40cf6090ab..faba55fd656a 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -284,6 +284,8 @@ static const struct bcm_sysport_stats bcm_sysport_gstrings_stats[] = { STAT_MIB_SOFT("alloc_rx_buff_failed", mib.alloc_rx_buff_failed), STAT_MIB_SOFT("rx_dma_failed", mib.rx_dma_failed), STAT_MIB_SOFT("tx_dma_failed", mib.tx_dma_failed), + STAT_MIB_SOFT("tx_realloc_tsb", mib.tx_realloc_tsb), + STAT_MIB_SOFT("tx_realloc_tsb_failed", mib.tx_realloc_tsb_failed), /* Per TX-queue statistics are dynamically appended */ }; @@ -1220,6 +1222,7 @@ static void bcm_sysport_poll_controller(struct net_device *dev) static struct sk_buff *bcm_sysport_insert_tsb(struct sk_buff *skb, struct net_device *dev) { + struct bcm_sysport_priv *priv = netdev_priv(dev); struct sk_buff *nskb; struct bcm_tsb *tsb; u32 csum_info; @@ -1232,12 +1235,14 @@ static struct sk_buff *bcm_sysport_insert_tsb(struct sk_buff *skb, nskb = skb_realloc_headroom(skb, sizeof(*tsb)); if (!nskb) { dev_kfree_skb_any(skb); + priv->mib.tx_realloc_tsb_failed++; dev->stats.tx_errors++; dev->stats.tx_dropped++; return NULL; } dev_consume_skb_any(skb); skb = nskb; + priv->mib.tx_realloc_tsb++; } tsb = skb_push(skb, sizeof(*tsb)); |