kernel/git/stable/linux.git/net/caif/cfsrvl.c, branch master

caif: remove CAIF NETWORK LAYER

2026-04-23T17:23:44+00:00

Remove CAIF (Communication CPU to Application CPU Interface), the ST-Ericsson modem protocol. The subsystem has been orphaned since 2013. The last meaningful changes from the maintainers were in March 2013: a8c7687bf216 ("caif_virtio: Check that vringh_config is not null") b2273be8d2df ("caif_virtio: Use vringh_notify_enable correctly") 0d2e1a2926b1 ("caif_virtio: Introduce caif over virtio") Not-so-coincidentally, according to "the Internet" ST-Ericsson officially shut down its modem joint venture in Aug 2013. If anyone is using this code please yell! In the 13 years since, the code has accumulated 200 non-merge commits, of which 71 were cross-tree API changes, 21 carried Fixes: tags, and the remaining ~110 were cleanups, doc conversions, treewide refactors, and one partial removal (caif_hsi, ca75bcf0a83b). We are still getting fixes to this code, in the last 10 days there were 3 reports on security@ about CAIF that I have been CCed on. UAPI constants (AF_CAIF, ARPHRD_CAIF, N_CAIF, VIRTIO_ID_CAIF) and the SELinux classmap entry are intentionally kept for ABI stability. Acked-by: Michael S. Tsirkin Acked-by: Greg Kroah-Hartman Reviewed-by: Linus Walleij Reviewed-by: Simon Horman Link: https://patch.msgid.link/20260416182829.1440262-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

net: caif: clear client service pointer on teardown

2026-04-14T11:21:54+00:00

`caif_connect()` can tear down an existing client after remote shutdown by calling `caif_disconnect_client()` followed by `caif_free_client()`. `caif_free_client()` releases the service layer referenced by `adap_layer->dn`, but leaves that pointer stale. When the socket is later destroyed, `caif_sock_destructor()` calls `caif_free_client()` again and dereferences the freed service pointer. Clear the client/service links before releasing the service object so repeated teardown becomes harmless. Fixes: 43e369210108 ("caif: Move refcount from service layer to sock and dev.") Cc: stable@kernel.org Reported-by: Yifan Wu Reported-by: Juefei Pu Co-developed-by: Yuan Tan Signed-off-by: Yuan Tan Suggested-by: Xin Liu Tested-by: Ren Wei Signed-off-by: Zhengchuan Liang Signed-off-by: Ren Wei Link: https://patch.msgid.link/9f3d37847c0037568aae698ca23cd47c6691acb0.1775897577.git.zcliangcn@gmail.com Signed-off-by: Paolo Abeni

caif: Remove unused cfsrvl_getphyid

2024-10-08T22:33:49+00:00

cfsrvl_getphyid() has been unused since 2011's commit f36214408470 ("caif: Use RCU and lists in cfcnfg.c for managing caif link layers") Remove it. Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Simon Horman Link: https://patch.msgid.link/20241007004456.149899-1-linux@treblig.org Signed-off-by: Jakub Kicinski

caif: Remove duplicate macro SRVL_CTRL_PKT_SIZE

2020-09-05T22:57:05+00:00

Remove SRVL_CTRL_PKT_SIZE which is defined more than once. Reported-by: Hulk Robot Signed-off-by: Wang Hai Signed-off-by: Jakub Kicinski

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194

2019-05-30T18:29:22+00:00

Based on 1 normalized pattern(s): license terms gnu general public license gpl version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 161 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Alexios Zavras Reviewed-by: Steve Winslow Reviewed-by: Richard Fontana Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170027.447718015@linutronix.de Signed-off-by: Greg Kroah-Hartman

net: Include appropriate header file in caif/cfsrvl.c

2014-02-10T01:32:49+00:00

Include appropriate header file net/caif/caif_dev.h in caif/cfsrvl.c because it has prototype declaration of functions defined in caif/cfsrvl.c. This eliminates the following warning in caif/cfsrvl.c: net/caif/cfsrvl.c:198:6: warning: no previous prototype for ‘caif_free_client’ [-Wmissing-prototypes] net/caif/cfsrvl.c:208:6: warning: no previous prototype for ‘caif_client_register_refcnt’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria Reviewed-by: Josh Triplett Signed-off-by: David S. Miller

caif: Remove my bouncing email address.

2013-04-23T17:25:51+00:00

Remove my soon bouncing email address. Also remove the "Contact:" line in file header. The MAINTAINERS file is a better place to find the contact person anyway. Signed-off-by: Sjur Brændeland Signed-off-by: David S. Miller

CAIF: fix indentation for function arguments

2013-03-07T21:24:45+00:00

This lines up function arguments on second and subsequent lines at the first column after the openning parenthesis of the first line. Signed-off-by: Silviu-Mihai Popescu Signed-off-by: David S. Miller

caif: move the dereference below the NULL test

2012-09-10T20:13:31+00:00

The dereference should be moved below the NULL test. spatch with a semantic match is used to found this. (http://coccinelle.lip6.fr/) Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller

caif: set traffic class for caif packets

2012-04-13T15:37:36+00:00

Set traffic class for CAIF packets, based on socket priority, CAIF protocol type, or type of message. Traffic class mapping for different packet types: - control: TC_PRIO_CONTROL; - flow control: TC_PRIO_CONTROL; - at: TC_PRIO_CONTROL; - rfm: TC_PRIO_INTERACTIVE_BULK; - other sockets: equals to socket's TC; - network data: no change. Signed-off-by: Dmitry Tarnyagin Signed-off-by: David S. Miller