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* Crash fix
The delete command would delete a socket tag entry without removing it
from the proc_qtu_data { ..., sock_tag_list, }.
This in turn would cause an exiting process to crash while cleaning up
its matching proc_qtu_data.
* Added more aggressive tracking/cleanup of proc_qtu_data
This should allow one process to cleanup qtu_tag_data{} left around from
processes that didn't use resource tracking via /dev/xt_qtaguid.
* Debug printing tweaks
Better code inclusion/exclusion handling,
and extra debug out of full state.
Change-Id: I735965af2962ffcd7f3021cdc0068b3ab21245c2
Signed-off-by: JP Abgrall <jpa@google.com>
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There is a
/proc/net/xt_qtaguid/iface/<iface>/{rx_bytes,rx_packets,tx_bytes,...}
but for better convenience and to avoid getting overly stale net/dev stats
we now have
/proc/net/xt_qtaguid/iface_stat_all
which outputs lines of:
iface_name active rx_bytes rx_packets tx_bytes tx_packets
net_dev_rx_bytes net_dev_rx_packets net_dev_tx_bytes net_dev_tx_packets
Change-Id: I12cc10d2d123b86b56d4eb489b1d77b2ce72ebcf
Signed-off-by: JP Abgrall <jpa@google.com>
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Most net devs will not reset their stats when just going down/up,
unless a NETDEV_UNREGISTER was notified.
But some devs will not send out a NETDEV_UNREGISTER but still
reset their stats just before a NETDEV_UP.
Now we just track the dev stats during NETDEV_DOWN... just in case.
Then on NETDEV_UP we check the stats: if the device didn't do a
NETDEV_UNREGISTER and a prior NETDEV_DOWN captured stats, then we treat
it as an UNREGISTER and save the totals from the stashed values.
Added extra netdev event debugging.
Change-Id: Iec79e74bfd40269aa3e5892f161be71e09de6946
Signed-off-by: JP Abgrall <jpa@google.com>
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* Added global resource tracking based on tags.
- Can be put into passive mode via
/sys/modules/xt_qtaguid/params/tag_tracking_passive
- The number of socket tags per UID is now limited
- Adding /dev/xt_qtaguid that each process should open before starting
to tag sockets. A later change will make it a "must".
- A process should not create new tags unless it has the dev open.
A later change will make it a must.
- On qtaguid_resources release, the process' matching socket tag info
is deleted.
* Support run-time debug mask via /sys/modules parameter "debug_mask".
* split module into prettyprinting code, includes, main.
* Removed ptrdiff_t usage which didn't work in all cases.
Change-Id: I4a21d3bea55d23c1c3747253904e2a79f7d555d9
Signed-off-by: JP Abgrall <jpa@google.com>
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