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bsnmpd: Only refresh devtree if devd event is a new or removed device.

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It makes sense to refresh the tree only when a device is inserted or
removed, otherwise bsnmpd wastes lot of CPU.

PR:		209368
MFC after:	1 week
This commit is contained in:
Pedro F. Giffuni 2017-10-28 21:26:49 +00:00
parent 0f23ab8aac
commit 7e7315b542
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=325067
1 changed files with 3 additions and 1 deletions
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4
usr.sbin/bsnmpd/modules/snmp_hostres/hostres_device_tbl.c
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@ -479,7 +479,9 @@ devd_socket_callback(int fd, void *arg __unused)
} else {
if (read_len == sizeof(buf))
goto again;
refresh_device_tbl(1);
/* Only refresh device table on a device add or remove event. */
if (buf[0] == '+' || buf[0] == '-')
refresh_device_tbl(1);
}
}