Konstantin Khlebnikov 589503cb24 inet_diag: fix reporting cgroup classid and fallback to priority ... [ Upstream commit 1ec17dbd90 ] Field idiag_ext in struct inet_diag_req_v2 used as bitmap of requested extensions has only 8 bits. Thus extensions starting from DCTCPINFO cannot be requested directly. Some of them included into response unconditionally or hook into some of lower 8 bits. Extension INET_DIAG_CLASS_ID has not way to request from the beginning. This patch bundle it with INET_DIAG_TCLASS (ipv6 tos), fixes space reservation, and documents behavior for other extensions. Also this patch adds fallback to reporting socket priority. This filed is more widely used for traffic classification because ipv4 sockets automatically maps TOS to priority and default qdisc pfifo_fast knows about that. But priority could be changed via setsockopt SO_PRIORITY so INET_DIAG_TOS isn't enough for predicting class. Also cgroup2 obsoletes net_cls classid (it always zero), but we cannot reuse this field for reporting cgroup2 id because it is 64-bit (ino+gen). So, after this patch INET_DIAG_CLASS_ID will report socket priority for most common setup when net_cls isn't set and/or cgroup2 in use. Fixes: 0888e372c3 ("net: inet: diag: expose sockets cgroup classid") Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-02-27 10:08:58 +01:00
..
asm-generic	mm/hugetlb: add mmap() encodings for 32MB and 512MB page sizes	2018-10-05 16:32:04 -07:00
drm	drm: add msm compressed format modifiers	2018-07-26 10:39:21 -04:00
linux	inet_diag: fix reporting cgroup classid and fallback to priority	2019-02-27 10:08:58 +01:00
misc	ocxl: Add an IOCTL so userspace knows what OCXL features are available	2018-06-03 20:40:32 +10:00
mtd	ubi: expose the volume CRC check skip flag	2018-08-15 00:25:21 +02:00
rdma	RDMA/vmw_pvrdma: Return the correct opcode when creating WR	2019-01-22 21:40:34 +01:00
scsi
sound	ASoC: uapi: fix sound/skl-tplg-interface.h userspace compilation errors	2018-08-14 15:08:07 +01:00
video
xen	xen/gntdev: Add initial support for dma-buf UAPI	2018-07-26 23:05:14 -04:00