kernel.git/net/l2tp/l2tp_debugfs.c, branch linux-5.9.y

l2tp: WARN_ON rather than BUG_ON in l2tp_dfs_seq_start

2020-07-25T00:19:14Z

l2tp_dfs_seq_start had a BUG_ON to catch a possible programming error in l2tp_dfs_seq_open. Since we can easily bail out of l2tp_dfs_seq_start, prefer to do that and flag the error with a WARN_ON rather than crashing the kernel. Signed-off-by: Tom Parkin Signed-off-by: David S. Miller

l2tp: check socket address type in l2tp_dfs_seq_tunnel_show

2020-07-23T18:54:40Z

checkpatch warns about indentation and brace balancing around the conditionally compiled code for AF_INET6 support in l2tp_dfs_seq_tunnel_show. By adding another check on the socket address type we can make the code more readable while removing the checkpatch warning. Signed-off-by: Tom Parkin Signed-off-by: David S. Miller

l2tp: cleanup comparisons to NULL

2020-07-23T18:54:40Z

checkpatch warns about comparisons to NULL, e.g. CHECK: Comparison to NULL could be written "!rt" #474: FILE: net/l2tp/l2tp_ip.c:474: + if (rt == NULL) { These sort of comparisons are generally clearer and more readable the way checkpatch suggests, so update l2tp accordingly. Signed-off-by: Tom Parkin Signed-off-by: David S. Miller

l2tp: prefer seq_puts for unformatted output

2020-07-23T01:08:39Z

checkpatch warns about use of seq_printf where seq_puts would do. Modify l2tp_debugfs accordingly. Signed-off-by: Tom Parkin Signed-off-by: David S. Miller

l2tp: cleanup wonky alignment of line-broken function calls

2020-07-23T01:08:39Z

Arguments should be aligned with the function call open parenthesis as per checkpatch. Tweak some function calls which were not aligned correctly. Signed-off-by: Tom Parkin Signed-off-by: David S. Miller

l2tp: cleanup comments

2020-07-23T01:08:39Z

Modify some l2tp comments to better adhere to kernel coding style, as reported by checkpatch.pl. Add descriptive comments for the l2tp per-net spinlocks to document their use. Fix an incorrect comment in l2tp_recv_common: RFC2661 section 5.4 states that: "The LNS controls enabling and disabling of sequence numbers by sending a data message with or without sequence numbers present at any time during the life of a session." l2tp handles this correctly in l2tp_recv_common, but the comment around the code was incorrect and confusing. Fix up the comment accordingly. Signed-off-by: Tom Parkin Signed-off-by: David S. Miller

l2tp: cleanup whitespace use

2020-07-23T01:08:39Z

Fix up various whitespace issues as reported by checkpatch.pl: * remove spaces around operators where appropriate, * add missing blank lines following declarations, * remove multiple blank lines, or trailing blank lines at the end of functions. Signed-off-by: Tom Parkin Signed-off-by: David S. Miller

l2tp: no need to check return value of debugfs_create functions

2019-06-14T15:45:05Z

When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Also, there is no need to store the individual debugfs file name, just remove the whole directory all at once, saving a local variable. Cc: "David S. Miller" Cc: Guillaume Nault Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Acked-by: Guillaume Nault Signed-off-by: David S. Miller

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

l2tp: ignore L2TP_ATTR_MTU

2018-08-03T17:03:57Z

This attribute's handling is broken. It can only be used when creating Ethernet pseudo-wires, in which case its value can be used as the initial MTU for the l2tpeth device. However, when handling update requests, L2TP_ATTR_MTU only modifies session->mtu. This value is never propagated to the l2tpeth device. Dump requests also return the value of session->mtu, which is not synchronised anymore with the device MTU. The same problem occurs if the device MTU is properly updated using the generic IFLA_MTU attribute. In this case, session->mtu is not updated, and L2TP_ATTR_MTU will report an invalid value again when dumping the session. It does not seem worthwhile to complexify l2tp_eth.c to synchronise session->mtu with the device MTU. Even the ip-l2tp manpage advises to use 'ip link' to initialise the MTU of l2tpeth devices (iproute2 does not handle L2TP_ATTR_MTU at all anyway). So let's just ignore it entirely. Signed-off-by: Guillaume Nault Signed-off-by: David S. Miller