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staging: unisys: visornic - check visorchannel_signalinsert/remove failures 

Logic to check for failures of visorchannel_signalinsert() and
visorchannel_signalremove() were added, and a new sent_post_failed counter
tracks the number of times we failed to post a rcv buffer to the IO
partition.

Signed-off-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tim Sell 2015-07-24 12:00:23 -04:00 committed by Greg Kroah-Hartman
parent 4d79002e96
commit 81d275c6c3
1 changed files with 14 additions and 7 deletions
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21
drivers/staging/unisys/visornic/visornic_main.c
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@ -102,6 +102,7 @@ struct chanstat {
unsigned long sent_enbdis;
unsigned long sent_promisc;
unsigned long sent_post;
unsigned long sent_post_failed;
unsigned long sent_xmit;
unsigned long reject_count;
unsigned long extra_rcvbufs_sent;
@ -479,11 +480,14 @@ post_skb(struct uiscmdrsp *cmdrsp,
if ((cmdrsp->net.rcvpost.frag.pi_off + skb->len) <= PI_PAGE_SIZE) {
cmdrsp->net.type = NET_RCV_POST;
cmdrsp->cmdtype = CMD_NET_TYPE;
visorchannel_signalinsert(devdata->dev->visorchannel,
if (visorchannel_signalinsert(devdata->dev->visorchannel,
IOCHAN_TO_IOPART,
cmdrsp);
atomic_inc(&devdata->num_rcvbuf_in_iovm);
devdata->chstat.sent_post++;
cmdrsp)) {
atomic_inc(&devdata->num_rcvbuf_in_iovm);
devdata->chstat.sent_post++;
} else {
devdata->chstat.sent_post_failed++;
}
}
}
@ -505,10 +509,10 @@ send_enbdis(struct net_device *netdev, int state,
devdata->cmdrsp_rcv->net.enbdis.context = netdev;
devdata->cmdrsp_rcv->net.type = NET_RCV_ENBDIS;
devdata->cmdrsp_rcv->cmdtype = CMD_NET_TYPE;
visorchannel_signalinsert(devdata->dev->visorchannel,
if (visorchannel_signalinsert(devdata->dev->visorchannel,
IOCHAN_TO_IOPART,
devdata->cmdrsp_rcv);
devdata->chstat.sent_enbdis++;
devdata->cmdrsp_rcv))
devdata->chstat.sent_enbdis++;
}
/**
@ -1501,6 +1505,9 @@ static ssize_t info_debugfs_read(struct file *file, char __user *buf,
str_pos += scnprintf(vbuf + str_pos, len - str_pos,
" chstat.sent_post = %lu\n",
devdata->chstat.sent_post);
str_pos += scnprintf(vbuf + str_pos, len - str_pos,
" chstat.sent_post_failed = %lu\n",
devdata->chstat.sent_post_failed);
str_pos += scnprintf(vbuf + str_pos, len - str_pos,
" chstat.sent_xmit = %lu\n",
devdata->chstat.sent_xmit);