lwn.git/net/l2tp/l2tp_eth.c, branch docs-6.12

net l2tp: drop flow hash on forward

2024-04-26T11:48:24+00:00

Drop the flow-hash of the skb when forwarding to the L2TP netdev. This avoids the L2TP qdisc from using the flow-hash from the outer packet, which is identical for every flow within the tunnel. This does not affect every platform but is specific for the ethernet driver. It depends on the platform including L4 information in the flow-hash. One such example is the Mediatek Filogic MT798x family of networking processors. Fixes: d9e31d17ceba ("l2tp: Add L2TP ethernet pseudowire support") Acked-by: James Chapman Signed-off-by: David Bauer Reviewed-by: Simon Horman Link: https://lore.kernel.org/r/20240424171110.13701-1-mail@david-bauer.net Signed-off-by: Paolo Abeni

net: l2tp: constify the struct device_type usage

2024-02-21T09:45:23+00:00

Since commit aed65af1cc2f ("drivers: make device_type const"), the driver core can properly handle constant struct device_type. Move the l2tpeth_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Cc: Greg Kroah-Hartman Signed-off-by: Ricardo B. Marliere Reviewed-by: Guillaume Nault Signed-off-by: David S. Miller

net: l2tp_eth: use generic dev->stats fields

2023-10-01T15:33:01+00:00

Core networking has opt-in atomic variant of dev->stats, simply use DEV_STATS_INC(), DEV_STATS_ADD() and DEV_STATS_READ(). v2: removed @priv local var in l2tp_eth_dev_recv() (Simon) Signed-off-by: Eric Dumazet Cc: Simon Horman Signed-off-by: David S. Miller

l2tp: move from strlcpy with unused retval to strscpy

2022-08-23T00:59:46+00:00

Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20220818210222.8515-1-wsa+renesas@sang-engineering.com Signed-off-by: Jakub Kicinski

l2tp: remove header length param from l2tp_xmit_skb

2020-09-03T19:19:03+00:00

All callers pass the session structure's hdr_len field as the header length parameter to l2tp_xmit_skb. Since we're passing a pointer to the session structure to l2tp_xmit_skb anyway, there's not much point breaking the header length out as a separate argument. Signed-off-by: Tom Parkin Signed-off-by: David S. Miller

l2tp: don't log data frames

2020-08-22T19:44:37+00:00

l2tp had logging to trace data frame receipt and transmission, including code to dump packet contents. This was originally intended to aid debugging of core l2tp packet handling, but is of limited use now that code is stable. Signed-off-by: Tom Parkin Signed-off-by: David S. Miller

l2tp: cleanup comments

2020-07-23T01:08:39+00:00

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

2020-07-23T01:08:39+00:00

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: fix l2tp_eth_dev_xmit()'s return type

2020-06-29T03:52:53+00:00

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t', which is a typedef for an enum type, but the implementation in this driver returns an 'int'. Fix this by returning 'netdev_tx_t' in this driver too. Signed-off-by: Luc Van Oostenryck Signed-off-by: David S. Miller

net: partially revert dynamic lockdep key changes

2020-05-04T19:05:56+00:00

This patch reverts the folowing commits: commit 064ff66e2bef84f1153087612032b5b9eab005bd "bonding: add missing netdev_update_lockdep_key()" commit 53d374979ef147ab51f5d632dfe20b14aebeccd0 "net: avoid updating qdisc_xmit_lock_key in netdev_update_lockdep_key()" commit 1f26c0d3d24125992ab0026b0dab16c08df947c7 "net: fix kernel-doc warning in " commit ab92d68fc22f9afab480153bd82a20f6e2533769 "net: core: add generic lockdep keys" but keeps the addr_list_lock_key because we still lock addr_list_lock nestedly on stack devices, unlikely xmit_lock this is safe because we don't take addr_list_lock on any fast path. Reported-and-tested-by: syzbot+aaa6fa4949cc5d9b7b25@syzkaller.appspotmail.com Cc: Dmitry Vyukov Cc: Taehee Yoo Signed-off-by: Cong Wang Acked-by: Taehee Yoo Signed-off-by: David S. Miller