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Add new control message to atomically get and clear statistics.

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This commit is contained in:
Archie Cobbs 2000-08-10 22:52:40 +00:00
parent a8f6d55e95
commit 0521578550
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=64513
1 changed files with 37 additions and 24 deletions
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61
sys/netgraph/ng_tee.c
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@ -116,6 +116,13 @@ static const struct ng_cmdlist ng_tee_cmds[] = {
NULL,
NULL
},
{
NGM_TEE_COOKIE,
NGM_TEE_GETCLR_STATS,
"getclrstats",
NULL,
&ng_tee_stats_type
},
{ 0 }
};
@ -204,34 +211,40 @@ ngt_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
case NGM_TEE_COOKIE:
switch (msg->header.cmd) {
case NGM_TEE_GET_STATS:
{
case NGM_TEE_CLR_STATS:
case NGM_TEE_GETCLR_STATS:
{
struct ng_tee_stats *stats;
NG_MKRESPONSE(resp, msg,
sizeof(struct ng_tee_stats), M_NOWAIT);
if (resp == NULL) {
error = ENOMEM;
goto done;
if (msg->header.cmd != NGM_TEE_CLR_STATS) {
NG_MKRESPONSE(resp, msg,
sizeof(*stats), M_NOWAIT);
if (resp == NULL) {
error = ENOMEM;
goto done;
}
stats = (struct ng_tee_stats *)resp->data;
bcopy(&sc->right.stats, &stats->right,
sizeof(stats->right));
bcopy(&sc->left.stats, &stats->left,
sizeof(stats->left));
bcopy(&sc->right2left.stats, &stats->right2left,
sizeof(stats->right2left));
bcopy(&sc->left2right.stats, &stats->left2right,
sizeof(stats->left2right));
}
if (msg->header.cmd != NGM_TEE_GET_STATS) {
bzero(&sc->right.stats,
sizeof(sc->right.stats));
bzero(&sc->left.stats,
sizeof(sc->left.stats));
bzero(&sc->right2left.stats,
sizeof(sc->right2left.stats));
bzero(&sc->left2right.stats,
sizeof(sc->left2right.stats));
}
stats = (struct ng_tee_stats *) resp->data;
bcopy(&sc->right.stats,
&stats->right, sizeof(stats->right));
bcopy(&sc->left.stats,
&stats->left, sizeof(stats->left));
bcopy(&sc->right2left.stats,
&stats->right2left, sizeof(stats->right2left));
bcopy(&sc->left2right.stats,
&stats->left2right, sizeof(stats->left2right));
break;
break;
}
case NGM_TEE_CLR_STATS:
bzero(&sc->right.stats, sizeof(sc->right.stats));
bzero(&sc->left.stats, sizeof(sc->left.stats));
bzero(&sc->right2left.stats,
sizeof(sc->right2left.stats));
bzero(&sc->left2right.stats,
sizeof(sc->left2right.stats));
break;
default:
error = EINVAL;
break;