kernel/linux.git/drivers/connector/cn_queue.c, branch v6.6.132

net/connector: Add const qualifier to cb_id

2020-12-16T19:06:49+00:00

The connector driver never modifies any cb_id passed to it, so add a const qualifier to those arguments so callers can declare their struct cb_id as a constant object. Fixes build warnings like these when passing a constant struct cb_id: warning: passing argument 1 of ‘cn_add_callback’ discards ‘const’ qualifier from pointer target Signed-off-by: Geoff Levand Link: https://lore.kernel.org/r/a9e49c9e-67fa-16e7-0a6b-72f6bd30c58a@infradead.org Signed-off-by: Jakub Kicinski

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30T18:26:35+00:00

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 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman

drivers, connector: convert cn_callback_entry.refcnt from atomic_t to refcount_t

2017-10-22T01:22:39+00:00

atomic_t variables are currently used to implement reference counters with the following properties: - counter is initialized to 1 using atomic_set() - a resource is freed upon counter reaching zero - once counter reaches zero, its further increments aren't allowed - counter schema uses basic atomic operations (set, inc, inc_not_zero, dec_and_test, etc.) Such atomic variables should be converted to a newly provided refcount_t type and API that prevents accidental counter overflows and underflows. This is important since overflows and underflows can lead to use-after-free situation and be exploitable. The variable cn_callback_entry.refcnt is used as pure reference counter. Convert it to refcount_t and fix up the operations. Suggested-by: Kees Cook Reviewed-by: David Windsor Reviewed-by: Hans Liljestrand Signed-off-by: Elena Reshetova Signed-off-by: David S. Miller

drivers: connector: fixed coding style issues

2012-07-17T06:23:52+00:00

V2: Replaced assignment in if statement. Fixed coding style issues. Signed-off-by: Valentin Ilie Signed-off-by: David S. Miller

connector: convert to synchronous netlink message processing

2011-03-31T00:14:33+00:00

Commits 01a16b21 (netlink: kill eff_cap from struct netlink_skb_parms) and c53fa1ed (netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms) removed some members from struct netlink_skb_parms that depend on the current context, all netlink users are now required to do synchronous message processing. connector however queues received messages and processes them in a work queue, which is not valid anymore. This patch converts connector to do synchronous message processing by invoking the registered callback handler directly from the netlink receive function. In order to avoid invoking the callback with connector locks held, a reference count is added to struct cn_callback_entry, the reference is taken when finding a matching callback entry on the device's queue_list and released after the callback handler has been invoked. Signed-off-by: Patrick McHardy Acked-by: Evgeniy Polyakov Signed-off-by: David S. Miller

connector: Convert char name to const char name

2011-02-23T21:22:26+00:00

Allow more const declarations. Signed-off-by: Joe Perches Acked-by: Evgeniy Polyakov Signed-off-by: Greg Kroah-Hartman

connector: remove lazy workqueue creation

2010-10-24T21:20:01+00:00

Commit 1a5645bc (connector: create connector workqueue only while needed once) implements lazy workqueue creation for connector workqueue. With cmwq now in place, lazy workqueue creation doesn't make much sense while adding a lot of complexity. Remove it and allocate an ordered workqueue during initialization. This also removes a call to flush_scheduled_work() which is deprecated and scheduled to be removed. Signed-off-by: Tejun Heo Cc: Frederic Weisbecker Signed-off-by: David S. Miller

connector: Removed the destruct_data callback since it is always kfree_skb()

2009-10-02T17:54:05+00:00

Signed-off-by: Philipp Reisner Acked-by: Lars Ellenberg Acked-by: Evgeniy Polyakov Signed-off-by: David S. Miller

connector: Provide the sender's credentials to the callback

2009-10-02T17:54:01+00:00

Signed-off-by: Philipp Reisner Acked-by: Lars Ellenberg Acked-by: Evgeniy Polyakov Signed-off-by: David S. Miller

connector: Keep the skb in cn_callback_data

2009-10-02T17:53:58+00:00

Signed-off-by: Philipp Reisner Acked-by: Lars Ellenberg Acked-by: Evgeniy Polyakov Signed-off-by: David S. Miller

kernel/linux.git/drivers/connector/cn_queue.c, branch v6.6.132

net/connector: Add const qualifier to cb_id

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

drivers, connector: convert cn_callback_entry.refcnt from atomic_t to refcount_t

drivers: connector: fixed coding style issues

connector: convert to synchronous netlink message processing

connector: Convert char *name to const char *name

connector: remove lazy workqueue creation

connector: Removed the destruct_data callback since it is always kfree_skb()

connector: Provide the sender's credentials to the callback

connector: Keep the skb in cn_callback_data

connector: Convert char name to const char name