kernel.git/drivers/nfc/nfcsim.c, branch linux-5.11.y

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288

2019-06-05T15:36:37Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 263 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Alexios Zavras Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.208660670@linutronix.de Signed-off-by: Greg Kroah-Hartman

NFC: add NULL checks to avoid potential NULL pointer dereference

2017-06-22T22:34:56Z

NULL checks at line 457: if (!link0 || !link1) {, implies that both pointers link0 and link1 might be NULL. Function nfcsim_link_free() dereference pointers link0 and link1. Add NULL checks before calling nfcsim_link_free() to avoid a potential NULL pointer dereference. Addresses-Coverity-ID: 1364857 Signed-off-by: Gustavo A. R. Silva Signed-off-by: Samuel Ortiz

NFC: nfcsim: Simulate lost frames through debugfs entry

2016-07-19T21:24:49Z

This patch allows to simulate the lost of frames exchanged between the 2 nfcsim devices through a control entry in the debugfs and is used as follow: echo n > /sys/kernel/debug/nfcsim/nfcX/dropframe Where n specifies the number of frames to be dropped between 0 and 255 and nfcX is either nfc0 or nfc1, one of the two nfcsim devices. In the following example, the next frame that should be sent by the nfc0 device will be dropped and thus not received by the nfc1 device: echo 1 > /sys/kernel/debug/nfcsim/nfc0/dropframe The value of 0 can be used to reset the dropframe counter. Signed-off-by: Thierry Escande Signed-off-by: Samuel Ortiz

NFC: nfcsim: Add support for sysfs control entry

2016-07-19T21:23:29Z

The idea is to have a way to control and/or modify the behavior of the nfcsim virtual devices. This patch creates a folder tree in the debug filesystem. The debugfs is usually mounted into /sys/kernel/debug and the nfcsim entries are located in DEBUGFS/nfcsim/nfcX/ where X is either 0 or 1 depending on the device you want to address. These folders are empty for now and control entries will be added by upcoming commits. Signed-off-by: Thierry Escande Signed-off-by: Samuel Ortiz

NFC: nfcsim: Make use of the Digital layer

2016-07-04T10:36:30Z

With this complete rewrite, the loopback nfcsim driver now relies on the Digital layer of the nfc stack. As with the previous version, 2 nfc devices are declared when the driver is initialized. The driver supports the NFC_DEP protocol in NFC-A and NFC-F technologies. The 2 devices are using a pair of virtual links for sk_buff exchange. The out-link of one device is the in-link of the other and conversely. To receive data, a device calls nfcsim_link_recv_skb() on its in-link and waits for incoming data on a wait queue. To send data, a device calls nfcsim_link_send_skb() on its out-link which stores the passed skb and signals its wait queue. If the peer device was in the nfcsim_link_recv_skb() call, it will be signaled and will be able to pass the received sk_buff up to the Digital layer. Signed-off-by: Thierry Escande Signed-off-by: Samuel Ortiz

NFC: add rx delay sysfs parameter for nfcsim workqueue

2015-12-20T23:07:27Z

added the rx delay parameter as a device tunable parameter. Signed-off-by: Saurabh Sengar Signed-off-by: Samuel Ortiz

NFC: netlink: Add mode parameter to deactivate_target functions

2015-10-27T02:55:12Z

In order to manage in a better way the nci poll mode state machine, add mode parameter to deactivate_target functions. This way we can manage different target state. mode parameter make sense only in nci core. Signed-off-by: Christophe Ricard Signed-off-by: Samuel Ortiz

NFC: Convert nfc_dev_info and nfc_dev_err to nfc_

2013-09-24T23:35:39Z

Use a more standard kernel style macro logging name. Standardize the spacing of the "NFC: " prefix. Add \n to uses, remove from macro. Fix the defective uses that already had a \n. Signed-off-by: Joe Perches Signed-off-by: Samuel Ortiz

NFC: Replace nfc_dev_dbg with dev_dbg

2013-09-24T23:35:39Z

Use the generic kernel function instead of a home-grown one that does the same thing. Add \n to uses not at the macro. Don't add \n where the nfc_dev_dbg macro mistakenly had them already. Signed-off-by: Joe Perches Signed-off-by: Samuel Ortiz

NFC: Fix missing static declarations

2013-08-13T22:28:16Z

This patch fixes 3 sparse warnings: nfcsim.c:63:25: sparse: symbol 'wq' was not declared. nfcsim.c:484:12: sparse: symbol 'nfcsim_init' was not declared. nfcsim.c:525:13: sparse: symbol 'nfcsim_exit' was not declared. Reported-by: Fengguang Wu Signed-off-by: Thierry Escande Signed-off-by: Samuel Ortiz