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Provide a statistic to track the number of drops in each of the port's

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txq's buf_ring.  The aggregate for all the queues of a port is already
provided in ifnet->if_snd.ifq_drops.

MFC after:	3 days.
This commit is contained in:
Navdeep Parhar 2013-01-29 20:59:22 +00:00
parent 1113cd31a6
commit c25f378771
2 changed files with 3 additions and 0 deletions
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1
sys/dev/cxgbe/t4_main.c
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@ -5533,6 +5533,7 @@ t4_ioctl(struct cdev *dev, unsigned long cmd, caddr_t data, int fflag,
txq->txpkt_wrs = 0;
txq->txpkts_wrs = 0;
txq->txpkts_pkts = 0;
txq->br->br_drops = 0;
txq->no_dmamap = 0;
txq->no_desc = 0;
}

2
sys/dev/cxgbe/t4_sge.c
View File

@ -2362,6 +2362,8 @@ alloc_txq(struct port_info *pi, struct sge_txq *txq, int idx,
SYSCTL_ADD_UQUAD(&pi->ctx, children, OID_AUTO, "txpkts_pkts", CTLFLAG_RD,
&txq->txpkts_pkts, "# of frames tx'd using txpkts work requests");
SYSCTL_ADD_UQUAD(&pi->ctx, children, OID_AUTO, "br_drops", CTLFLAG_RD,
&txq->br->br_drops, "# of drops in the buf_ring for this queue");
SYSCTL_ADD_UINT(&pi->ctx, children, OID_AUTO, "no_dmamap", CTLFLAG_RD,
&txq->no_dmamap, 0, "# of times txq ran out of DMA maps");
SYSCTL_ADD_UINT(&pi->ctx, children, OID_AUTO, "no_desc", CTLFLAG_RD,