aboutsummaryrefslogtreecommitdiffstats
path: root/net/can (follow)
AgeCommit message (Collapse)AuthorFilesLines
2019-09-04can: add support of SAE J1939 protocolThe j1939 authors10-0/+4520
SAE J1939 is the vehicle bus recommended practice used for communication and diagnostics among vehicle components. Originating in the car and heavy-duty truck industry in the United States, it is now widely used in other parts of the world. J1939, ISO 11783 and NMEA 2000 all share the same high level protocol. SAE J1939 can be considered the replacement for the older SAE J1708 and SAE J1587 specifications. Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Bastian Stender <bst@pengutronix.de> Signed-off-by: Elenita Hinds <ecathinds@gmail.com> Signed-off-by: kbuild test robot <lkp@intel.com> Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be> Signed-off-by: Maxime Jayat <maxime.jayat@mobile-devices.fr> Signed-off-by: Robin van der Gracht <robin@protonic.nl> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: introduce CAN_REQUIRED_SIZE macroKurt Van Dijck2-4/+4
The size of this structure will be increased with J1939 support. To stay binary compatible, the CAN_REQUIRED_SIZE macro is introduced for existing CAN protocols. Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: af_can: use spin_lock_bh() for &net->can.rcvlists_lockOleksij Rempel1-4/+4
The can_rx_unregister() can be called from NAPI (soft IRQ) context, at least by j1939 stack. This leads to potential dead lock with &net->can.rcvlists_lock called from can_rx_register: =============================================================================== WARNING: inconsistent lock state 4.19.0-20181029-1-g3e67f95ba0d3 #3 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. testj1939/224 [HC0[0]:SC1[1]:HE1:SE0] takes: 1ad0fda3 (&(&net->can.rcvlists_lock)->rlock){+.?.}, at: can_rx_unregister+0x4c/0x1ac {SOFTIRQ-ON-W} state was registered at: lock_acquire+0xd0/0x1f4 _raw_spin_lock+0x30/0x40 can_rx_register+0x5c/0x14c j1939_netdev_start+0xdc/0x1f8 j1939_sk_bind+0x18c/0x1c8 __sys_bind+0x70/0xb0 sys_bind+0x10/0x14 ret_fast_syscall+0x0/0x28 0xbedc9b64 irq event stamp: 2440 hardirqs last enabled at (2440): [<c01302c0>] __local_bh_enable_ip+0xac/0x184 hardirqs last disabled at (2439): [<c0130274>] __local_bh_enable_ip+0x60/0x184 softirqs last enabled at (2412): [<c08b0bf4>] release_sock+0x84/0xa4 softirqs last disabled at (2415): [<c013055c>] irq_exit+0x100/0x1b0 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&net->can.rcvlists_lock)->rlock); <Interrupt> lock(&(&net->can.rcvlists_lock)->rlock); *** DEADLOCK *** 2 locks held by testj1939/224: #0: 168eb13b (rcu_read_lock){....}, at: netif_receive_skb_internal+0x3c/0x350 #1: 168eb13b (rcu_read_lock){....}, at: can_receive+0x88/0x1c0 =============================================================================== To avoid this situation, we should use spin_lock_bh() instead of spin_lock(). Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: af_can: remove NULL-ptr checks from users of can_dev_rcv_lists_find()Marc Kleine-Budde1-29/+16
Since using the "struct can_ml_priv" for the per device "struct dev_rcv_lists" the call can_dev_rcv_lists_find() cannot fail anymore. This patch simplifies af_can by removing the NULL pointer checks from the dev_rcv_lists returned by can_dev_rcv_lists_find(). Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: make use of preallocated can_ml_priv for per device struct can_dev_rcv_listsMarc Kleine-Budde1-38/+7
This patch removes the old method of allocating the per device protocol specific memory via a netdevice_notifier. This had the drawback, that the allocation can fail, leading to a lot of null pointer checks in the code. This also makes the live cycle management of this memory quite complicated. This patch switches from the allocating the struct can_dev_rcv_lists in a NETDEV_REGISTER call to using the dev->ml_priv, which is allocated by the driver since the previous patch. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: introduce CAN midlayer private and allocate it automaticallyMarc Kleine-Budde3-15/+2
This patch introduces the CAN midlayer private structure ("struct can_ml_priv") which should be used to hold protocol specific per device data structures. For now it's only member is "struct can_dev_rcv_lists". The CAN midlayer private is allocated via alloc_netdev()'s private and assigned to "struct net_device::ml_priv" during device creation. This is done transparently for CAN drivers using alloc_candev(). The slcan, vcan and vxcan drivers which are not using alloc_candev() have been adopted manually. The memory layout of the netdev_priv allocated via alloc_candev() will looke like this: +-------------------------+ | driver's priv | +-------------------------+ | struct can_ml_priv | +-------------------------+ | array of struct sk_buff | +-------------------------+ Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: af_can: can_pernet_exit(): no need to iterate over and cleanup registered CAN devicesMarc Kleine-Budde1-15/+0
The networking core takes care and unregisters every network device in a namespace before calling the can_pernet_exit() hook. This patch removes the unneeded cleanup. Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Suggested-by: Kirill Tkhai <ktkhai@virtuozzo.com> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: af_can: can_rx_register(): use max() instead of open coding itMarc Kleine-Budde1-2/+2
This patch replaces an open coded max by the proper kernel define max(). Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: af_can: give variable holding the CAN receiver and the receiver list a sensible nameMarc Kleine-Budde1-51/+50
This patch gives the variables holding the CAN receiver and the receiver list a better name by renaming them from "r to "rcv" and "rl" to "recv_list". Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: af_can: rename find_dev_rcv_lists() to can_dev_rcv_lists_find()Marc Kleine-Budde1-5/+5
This patch add the commonly used prefix "can_" to the find_dev_rcv_lists() function and moves the "find" to the end, as the function returns a struct can_dev_rcv_list. This improves the overall readability of the code. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: af_can: rename find_rcv_list() to can_rcv_list_find()Marc Kleine-Budde1-5/+5
This patch add the commonly used prefix "can_" to the find_rcv_list() function and add the "find" to the end, as the function returns a struct rcv_list. This improves the overall readability of the code. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: proc: give variable holding the CAN per device receive lists a sensible nameMarc Kleine-Budde1-18/+20
This patch gives the variables holding the CAN per device receive filter lists a better name by renaming them from "d" to "dev_rcv_lists". Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: af_can: give variable holding the CAN per device receive lists a sensible nameMarc Kleine-Budde1-45/+44
This patch gives the variables holding the CAN receive filter lists a better name by renaming them from "d" to "dev_rcv_lists". Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: netns: remove "can_" prefix from members struct netns_canMarc Kleine-Budde2-24/+24
This patch improves the code reability by removing the redundant "can_" prefix from the members of struct netns_can (as the struct netns_can itself is the member "can" of the struct net.) The conversion is done with: sed -i \ -e "s/struct can_dev_rcv_lists \*can_rx_alldev_list;/struct can_dev_rcv_lists *rx_alldev_list;/" \ -e "s/spinlock_t can_rcvlists_lock;/spinlock_t rcvlists_lock;/" \ -e "s/struct timer_list can_stattimer;/struct timer_list stattimer; /" \ -e "s/can\.can_rx_alldev_list/can.rx_alldev_list/g" \ -e "s/can\.can_rcvlists_lock/can.rcvlists_lock/g" \ -e "s/can\.can_stattimer/can.stattimer/g" \ include/net/netns/can.h \ net/can/*.[ch] Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: proc: give variables holding CAN statistics a sensible nameMarc Kleine-Budde1-58/+58
This patch rename the variables holding the CAN statistics (can_stats and can_pstats) to pkg_stats and rcv_lists_stats which reflect better their meaning. The conversion is done with: sed -i \ -e "s/can_stats\([^_]\)/pkg_stats\1/g" \ -e "s/can_pstats/rcv_lists_stats/g" \ net/can/proc.c Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: af_can: give variables holding CAN statistics a sensible nameMarc Kleine-Budde1-15/+15
This patch rename the variables holding the CAN statistics (can_stats and can_pstats) to pkg_stats and rcv_lists_stats which reflect better their meaning. The conversion is done with: sed -i \ -e "s/can_stats\([^_]\)/pkg_stats\1/g" \ -e "s/can_pstats/rcv_lists_stats/g" \ net/can/af_can.c Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: netns: give members of struct netns_can holding the statistics a sensible nameMarc Kleine-Budde2-23/+23
This patch gives the members of the struct netns_can that are holding the statistics a sensible name, by renaming struct netns_can::can_stats into struct netns_can::pkg_stats and struct netns_can::can_pstats into struct netns_can::rcv_lists_stats. The conversion is done with: sed -i \ -e "s:\(struct[^*]*\*\)can_stats;.*:\1pkg_stats;:" \ -e "s:\(struct[^*]*\*\)can_pstats;.*:\1rcv_lists_stats;:" \ -e "s/can\.can_stats/can.pkg_stats/g" \ -e "s/can\.can_pstats/can.rcv_lists_stats/g" \ net/can/*.[ch] \ include/net/netns/can.h Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-09-04can: netns: give structs holding the CAN statistics a sensible nameMarc Kleine-Budde3-14/+14
This patch renames both "struct s_stats" and "struct s_pstats", to "struct can_pkg_stats" and "struct can_rcv_lists_stats" to better reflect their meaning and improve code readability. The conversion is done with: sed -i \ -e "s/struct s_stats/struct can_pkg_stats/g" \ -e "s/struct s_pstats/struct can_rcv_lists_stats/g" \ net/can/*.[ch] \ include/net/netns/can.h Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: gw: add support for CAN FD framesOliver Hartkopp1-27/+187
Introduce CAN FD support which needs an extension of the netlink API to pass CAN FD type content to the kernel which has a different size to Classic CAN. Additionally the struct canfd_frame has a new 'flags' element that can now be modified with can-gw. The new CGW_FLAGS_CAN_FD option flag defines whether the routing job handles Classic CAN or CAN FD frames. This setting is very strict at reception time and enables the new possibilities, e.g. CGW_FDMOD_* and modifying the flags element of struct canfd_frame, only when CGW_FLAGS_CAN_FD is set. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: gw: use struct canfd_frame as internal data structureOliver Hartkopp1-105/+117
To prepare the CAN FD support this patch implements the first adaptions in data structures for CAN FD without changing the current functionality. Additionally some code at the end of this patch is moved or indented to simplify the review of the next implementation step. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: gw: cgw_parse_attr(): remove unnecessary braces for single statement blockMarc Kleine-Budde1-2/+1
This patch removes some unnecessary braces for a single statement block. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: gw: cgw_dump_jobs(): avoid long linesMarc Kleine-Budde1-2/+3
This patch rewraps the arguments of cgw_put_job() to avoid long lines, which also fixes the indention. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: gw: can_can_gw_rcv(): remove return at end of void functionMarc Kleine-Budde1-1/+0
This patch remove the return at the end of the void function can_can_gw_rcv(). Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: gw: add missing spaces around operatorsMarc Kleine-Budde1-18/+18
This patch add missing spaces around the '^' and '+' operators. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: gw: remove unnecessary blank lines, add suggested blank linesMarc Kleine-Budde1-14/+1
This patch removes unnecessary blank lines, and adds suggested ones, so that checkpatch doesn't complain anymore. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: gw: convert block comments to network style commentsMarc Kleine-Budde1-16/+8
This patch converts all block comments to network subsystem style block comments. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: bcm: switch timer to HRTIMER_MODE_SOFT and remove hrtimer_taskletThomas Gleixner1-104/+52
This patch switches the timer to HRTIMER_MODE_SOFT, which executed the timer callback in softirq context and removes the hrtimer_tasklet. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: bcm: bcm_sock_no_ioctlcmd(): mark function as staticMarc Kleine-Budde1-2/+2
This patch marks the bcm_sock_no_ioctlcmd() function as static as it's only used in this source file. Fixes: 473d924d7d46 ("can: fix ioctl function removal") Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: raw: raw_sock_no_ioctlcmd(): mark function as staticMarc Kleine-Budde1-2/+2
This patch marks the raw_sock_no_ioctlcmd() function as static as it's only used in this source file. Fixes: 473d924d7d46 ("can: fix ioctl function removal") Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: raw: raw_module_init(): use pr_err() instead of printk(KERN_ERR, ...)Marc Kleine-Budde1-1/+1
This patch converts a printk(KERN_ERR, ...) to a pr_err(). Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: raw: balance braces around else statementsMarc Kleine-Budde1-4/+8
This patch balances the braces around else statements, so that checkpatch doesn't complain anymore. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: raw: remove unnecessary blank lines, add suggested blank linesMarc Kleine-Budde1-3/+1
This patch removes unnecessary blank lines, and adds suggested ones, so that checkpatch doesn't complain anymore. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: raw: convert block comments to network style commentsMarc Kleine-Budde1-8/+4
This patch converts all block comments to network subsystem style block comments. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: af_can: add missing identifiers to struct receiver::funcMarc Kleine-Budde1-1/+1
This patch adds the missing identifiers to the struct receiver::func declaration. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: af_can: can_pernet_init(): Use preferred style kzalloc(sizeof()) usageMarc Kleine-Budde1-3/+3
This patch switches can_pernet_init() to the preferred style of using the sizeof() operator in kzalloc(). Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: af_can: avoid splitting quoted string across linesMarc Kleine-Budde1-10/+7
This patch joins all error message strings in af_can to be in single lines, to ease searching for them. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: af_can: fix alignmentMarc Kleine-Budde1-2/+2
This patch fixes the alignment of find_dev_rcv_lists() and canfd_rcv() so that checkpatch doesn't complain anymore. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: af_can: balance braces around else statementsMarc Kleine-Budde1-5/+8
This patch balances the braces around else statements, so that checkpatch doesn't complain anymore. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-13can: af_can: convert block comments to network style commentsMarc Kleine-Budde2-37/+15
This patch converts all block comments to network subsystem style block comments. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller1-15/+33
Just minor overlapping changes in the conflicts here. Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-29can: fix ioctl function removalOliver Hartkopp2-2/+16
Commit 60649d4e0af ("can: remove obsolete empty ioctl() handler") replaced the almost empty can_ioctl() function with sock_no_ioctl() which always returns -EOPNOTSUPP. Even though we don't have any ioctl() functions on socket/network layer we need to return -ENOIOCTLCMD to be able to forward ioctl commands like SIOCGIFINDEX to the network driver layer. This patch fixes the wrong return codes in the CAN network layer protocols. Reported-by: kernel test robot <rong.a.chen@intel.com> Fixes: 60649d4e0af ("can: remove obsolete empty ioctl() handler") Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-24can: gw: Fix error path of cgw_module_initYueHaibing1-15/+33
This patch add error path for cgw_module_init to avoid possible crash if some error occurs. Fixes: c1aabdf379bc ("can-gw: add netlink based CAN routing") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-07-24can: Add SPDX license identifiers for CAN subsystemOliver Hartkopp6-0/+6
Add missing SPDX identifiers for the CAN network layer and correct the SPDX license for two of its include files to make sure the BSD-3-Clause applies for the entire subsystem. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-07-24can: remove obsolete empty ioctl() handlerOliver Hartkopp3-11/+2
With commit c7cbdbf29f488a ("net: rework SIOCGSTAMP ioctl handling") the only ioctl function in can_ioctl() has been removed. As this SIOCGSTAMP ioctl command is now handled in net/socket.c we can entirely remove the CAN specific ioctl functions. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-07-24can: Kconfig: correct history of the CAN protocolRobert P. J. Day1-5/+6
Current history of CAN protocol is wrong, fix it in the Kconfig file. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-06-07can: purge socket error queue on sock destructWillem de Bruijn1-0/+1
CAN supports software tx timestamps as of the below commit. Purge any queued timestamp packets on socket destroy. Fixes: 51f31cabe3ce ("ip: support for TX timestamps on UDP and RAW sockets") Reported-by: syzbot+a90604060cb40f5bdd16@syzkaller.appspotmail.com Signed-off-by: Willem de Bruijn <willemb@google.com> Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-06-07can: af_can: Fix error path of can_init()YueHaibing1-3/+21
This patch add error path for can_init() to avoid possible crash if some error occurs. Fixes: 0d66548a10cb ("[CAN]: Add PF_CAN core module") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-05-21treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner1-0/+1
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-27netlink: make validation more configurable for future strictnessJohannes Berg1-2/+2
We currently have two levels of strict validation: 1) liberal (default) - undefined (type >= max) & NLA_UNSPEC attributes accepted - attribute length >= expected accepted - garbage at end of message accepted 2) strict (opt-in) - NLA_UNSPEC attributes accepted - attribute length >= expected accepted Split out parsing strictness into four different options: * TRAILING - check that there's no trailing data after parsing attributes (in message or nested) * MAXTYPE - reject attrs > max known type * UNSPEC - reject attributes with NLA_UNSPEC policy entries * STRICT_ATTRS - strictly validate attribute size The default for future things should be *everything*. The current *_strict() is a combination of TRAILING and MAXTYPE, and is renamed to _deprecated_strict(). The current regular parsing has none of this, and is renamed to *_parse_deprecated(). Additionally it allows us to selectively set one of the new flags even on old policies. Notably, the UNSPEC flag could be useful in this case, since it can be arranged (by filling in the policy) to not be an incompatible userspace ABI change, but would then going forward prevent forgetting attribute entries. Similar can apply to the POLICY flag. We end up with the following renames: * nla_parse -> nla_parse_deprecated * nla_parse_strict -> nla_parse_deprecated_strict * nlmsg_parse -> nlmsg_parse_deprecated * nlmsg_parse_strict -> nlmsg_parse_deprecated_strict * nla_parse_nested -> nla_parse_nested_deprecated * nla_validate_nested -> nla_validate_nested_deprecated Using spatch, of course: @@ expression TB, MAX, HEAD, LEN, POL, EXT; @@ -nla_parse(TB, MAX, HEAD, LEN, POL, EXT) +nla_parse_deprecated(TB, MAX, HEAD, LEN, POL, EXT) @@ expression NLH, HDRLEN, TB, MAX, POL, EXT; @@ -nlmsg_parse(NLH, HDRLEN, TB, MAX, POL, EXT) +nlmsg_parse_deprecated(NLH, HDRLEN, TB, MAX, POL, EXT) @@ expression NLH, HDRLEN, TB, MAX, POL, EXT; @@ -nlmsg_parse_strict(NLH, HDRLEN, TB, MAX, POL, EXT) +nlmsg_parse_deprecated_strict(NLH, HDRLEN, TB, MAX, POL, EXT) @@ expression TB, MAX, NLA, POL, EXT; @@ -nla_parse_nested(TB, MAX, NLA, POL, EXT) +nla_parse_nested_deprecated(TB, MAX, NLA, POL, EXT) @@ expression START, MAX, POL, EXT; @@ -nla_validate_nested(START, MAX, POL, EXT) +nla_validate_nested_deprecated(START, MAX, POL, EXT) @@ expression NLH, HDRLEN, MAX, POL, EXT; @@ -nlmsg_validate(NLH, HDRLEN, MAX, POL, EXT) +nlmsg_validate_deprecated(NLH, HDRLEN, MAX, POL, EXT) For this patch, don't actually add the strict, non-renamed versions yet so that it breaks compile if I get it wrong. Also, while at it, make nla_validate and nla_parse go down to a common __nla_validate_parse() function to avoid code duplication. Ultimately, this allows us to have very strict validation for every new caller of nla_parse()/nlmsg_parse() etc as re-introduced in the next patch, while existing things will continue to work as is. In effect then, this adds fully strict validation for any new command. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-19net: rework SIOCGSTAMP ioctl handlingArnd Bergmann3-6/+2
The SIOCGSTAMP/SIOCGSTAMPNS ioctl commands are implemented by many socket protocol handlers, and all of those end up calling the same sock_get_timestamp()/sock_get_timestampns() helper functions, which results in a lot of duplicate code. With the introduction of 64-bit time_t on 32-bit architectures, this gets worse, as we then need four different ioctl commands in each socket protocol implementation. To simplify that, let's add a new .gettstamp() operation in struct proto_ops, and move ioctl implementation into the common sock_ioctl()/compat_sock_ioctl_trans() functions that these all go through. We can reuse the sock_get_timestamp() implementation, but generalize it so it can deal with both native and compat mode, as well as timeval and timespec structures. Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/lkml/CAK8P3a038aDQQotzua_QtKGhq8O9n+rdiz2=WDCp82ys8eUT+A@mail.gmail.com/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.