diff options
| 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 | |
| parent | aa6ca0ec71d8028ec712058efa3d93a54e2bb13e (diff) | |
| download | linux-a5d78ce7936c9f6fd5a75c1d6b51587c6d05e7b3.tar.bz2 | |
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')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bcmsysport.c | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/bcmsysport.h | 2 |
2 files changed, 7 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)); diff --git a/drivers/net/ethernet/broadcom/bcmsysport.h b/drivers/net/ethernet/broadcom/bcmsysport.h index 046c6c1d97fd..a7a230884a87 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.h +++ b/drivers/net/ethernet/broadcom/bcmsysport.h @@ -607,6 +607,8 @@ struct bcm_sysport_mib { u32 alloc_rx_buff_failed; u32 rx_dma_failed; u32 tx_dma_failed; + u32 tx_realloc_tsb; + u32 tx_realloc_tsb_failed; }; /* HW maintains a large list of counters */ |