[PKT_SCHED]: Fix overflow on 64bit in times reported to userspace.
This patch fixes on overflow in tc actions times reported to userspace on 64 bit architectures. struct tcf_t only contains 32-bit timestamps, but they are initialized to jiffies. When jiffies is larger than 2^32-1 only the low 32 bit are saved, and the diff between jiffies and the current timestamp becomes very large. This happens immediately after boottime since jiffies is initialized to 2^32-300. It was invisible until now because only the lower 32bit were reported to userspace, but with the USER_HZ conversion the reported times start somewhere around 4294967s. This patch extends the timestamps to 64bit. It breaks userspace compatibility for actions, but considering that most of this is not even in iproute yet this should be acceptable. Signed-off-by: Patrick McHardy <kaber@trash.net> ACK'd by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
Showing
Please register or sign in to comment