diff options
-rw-r--r-- | lib/tc.c | 14 |
1 files changed, 13 insertions, 1 deletions
@@ -1366,7 +1366,19 @@ get_user_hz(void) static void nl_parse_tcf(const struct tcf_t *tm, struct tc_flower *flower) { - uint64_t lastused = time_msec() - (tm->lastuse * 1000 / get_user_hz()); + uint64_t lastused; + + /* On creation both tm->install and tm->lastuse are set to jiffies + * by the kernel. So if both values are the same, the flow has not been + * used yet. + * + * Note that tm->firstuse can not be used due to some kernel bug, i.e., + * hardware offloaded flows do not update tm->firstuse. */ + if (tm->lastuse == tm->install) { + lastused = 0; + } else { + lastused = time_msec() - (tm->lastuse * 1000 / get_user_hz()); + } if (flower->lastused < lastused) { flower->lastused = lastused; |