wireguard-linux/net/core/netprio_cgroup.c, branch jd/unified-crypt-queue

netprio: use css ID instead of cgroup ID

2019-11-12T16:18:03Z

netprio uses cgroup ID to index the priority mapping table. This is currently okay as cgroup IDs are allocated using idr and packed. However, cgroup IDs will be changed to use full 64bit range and won't be packed making this impractical. netprio doesn't care what type of IDs it uses as long as they can identify the controller instances and are packed. Let's switch to css IDs instead of cgroup IDs. Signed-off-by: Tejun Heo Acked-by: Neil Horman Reviewed-by: Greg Kroah-Hartman Cc: "David S. Miller" Cc: Namhyung Kim

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman

cgroup: net: remove left over MODULE_LICENSE tag

2019-04-23T04:50:54Z

The Kconfig currently controlling compilation of this code is: net/Kconfig:config CGROUP_NET_PRIO net/Kconfig: bool "Network priority cgroup" ...meaning that it currently is not being built as a module by anyone, as module support was discontinued in 2014. We delete the MODULE_LICENSE tag since all that information is already contained at the top of the file in the comments. We don't delete module.h from the includes since it was no longer there to begin with. Cc: "David S. Miller" Cc: Tejun Heo Cc: "Rosen, Rami" Cc: Daniel Wagner Cc: netdev@vger.kernel.org Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller

net: remove duplicate includes

2017-12-13T18:18:46Z

These duplicate includes have been found with scripts/checkincludes.pl but they have been removed manually to avoid removing false positives. Signed-off-by: Pravin Shedge Acked-by: Pablo Neira Ayuso Signed-off-by: David S. Miller

net: break include loop netdevice.h, dsa.h, devlink.h

2017-03-29T05:46:04Z

There is an include loop between netdevice.h, dsa.h, devlink.h because of NETDEV_ALIGN, making it impossible to use devlink structures in dsa.h. Break this loop by taking dsa.h out of netdevice.h, add a forward declaration of dsa_switch_tree and netdev_set_default_ethtool_ops() function, which is what netdevice.h requires. No longer having dsa.h in netdevice.h means the includes in dsa.h no longer get included. This breaks a few other files which depend on these includes. Add these directly in the affected file. Signed-off-by: Andrew Lunn Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller

sched/headers: Prepare to move the task_lock()/unlock() APIs to

2017-03-02T07:42:38Z

But first update the code that uses these facilities with the new header. Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

net: cgroups: fix build errors when linux/phy*.h is removed from net/dsa.h

2017-02-10T18:51:01Z

net/core/netprio_cgroup.c:303:16: error: expected declaration specifiers or '...' before string constant MODULE_LICENSE("GPL v2"); ^~~~~~~~ Add linux/module.h to fix this. Signed-off-by: Russell King Signed-off-by: David S. Miller

core: remove unneded headers for net cgroup controllers.

2016-02-17T20:31:27Z

commit 3ed80a6 (cgroup: drop module support) made including module.h redundant in the net cgroup controllers, netclassid_cgroup.c and netprio_cgroup.c. This patch removes them. Signed-off-by: Rami Rosen Acked-by: Tejun Heo Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2015-12-18T03:08:28Z

Conflicts: drivers/net/geneve.c Here we had an overlapping change, where in 'net' the extraneous stats bump was being removed whilst in 'net-next' the final argument to udp_tunnel6_xmit_skb() was being changed. Signed-off-by: David S. Miller

sock, cgroup: add sock->sk_cgroup

2015-12-09T03:02:33Z

In cgroup v1, dealing with cgroup membership was difficult because the number of membership associations was unbound. As a result, cgroup v1 grew several controllers whose primary purpose is either tagging membership or pull in configuration knobs from other subsystems so that cgroup membership test can be avoided. net_cls and net_prio controllers are examples of the latter. They allow configuring network-specific attributes from cgroup side so that network subsystem can avoid testing cgroup membership; unfortunately, these are not only cumbersome but also problematic. Both net_cls and net_prio aren't properly hierarchical. Both inherit configuration from the parent on creation but there's no interaction afterwards. An ancestor doesn't restrict the behavior in its subtree in anyway and configuration changes aren't propagated downwards. Especially when combined with cgroup delegation, this is problematic because delegatees can mess up whatever network configuration implemented at the system level. net_prio would allow the delegatees to set whatever priority value regardless of CAP_NET_ADMIN and net_cls the same for classid. While it is possible to solve these issues from controller side by implementing hierarchical allowable ranges in both controllers, it would involve quite a bit of complexity in the controllers and further obfuscate network configuration as it becomes even more difficult to tell what's actually being configured looking from the network side. While not much can be done for v1 at this point, as membership handling is sane on cgroup v2, it'd be better to make cgroup matching behave like other network matches and classifiers than introducing further complications. In preparation, this patch updates sock->sk_cgrp_data handling so that it points to the v2 cgroup that sock was created in until either net_prio or net_cls is used. Once either of the two is used, sock->sk_cgrp_data reverts to its previous role of carrying prioidx and classid. This is to avoid adding yet another cgroup related field to struct sock. As the mode switching can happen at most once per boot, the switching mechanism is aimed at lowering hot path overhead. It may leak a finite, likely small, number of cgroup refs and report spurious prioidx or classid on switching; however, dynamic updates of prioidx and classid have always been racy and lossy - socks between creation and fd installation are never updated, config changes don't update existing sockets at all, and prioidx may index with dead and recycled cgroup IDs. Non-critical inaccuracies from small race windows won't make any noticeable difference. This patch doesn't make use of the pointer yet. The following patch will implement netfilter match for cgroup2 membership. v2: Use sock_cgroup_data to avoid inflating struct sock w/ another cgroup specific field. v3: Add comments explaining why sock_data_prioidx() and sock_data_classid() use different fallback values. Signed-off-by: Tejun Heo Cc: Daniel Borkmann Cc: Daniel Wagner CC: Neil Horman Signed-off-by: David S. Miller