linux-stable/net/l2tp
Eric Dumazet f5f80e32de ipv6: remove hard coded limitation on ipv6_pinfo
IPv6 inet sockets are supposed to have a "struct ipv6_pinfo"
field at the end of their definition, so that inet6_sk_generic()
can derive from socket size the offset of the "struct ipv6_pinfo".

This is very fragile, and prevents adding bigger alignment
in sockets, because inet6_sk_generic() does not work
if the compiler adds padding after the ipv6_pinfo component.

We are currently working on a patch series to reorganize
TCP structures for better data locality and found issues
similar to the one fixed in commit f5d547676c
("tcp: fix tcp_inet6_sk() for 32bit kernels")

Alternative would be to force an alignment on "struct ipv6_pinfo",
greater or equal to __alignof__(any ipv6 sock) to ensure there is
no padding. This does not look great.

v2: fix typo in mptcp_proto_v6_init() (Paolo)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Chao Wu <wwchao@google.com>
Cc: Wei Wang <weiwan@google.com>
Cc: Coco Li <lixiaoyan@google.com>
Cc: YiFei Zhu <zhuyifei@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-07-24 09:39:31 +01:00
..
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile l2tp: add tracepoint infrastructure to core 2020-08-22 12:44:37 -07:00
l2tp_core.c l2tp: prevent lockdep issue in l2tp_tunnel_register() 2023-01-18 14:44:54 +00:00
l2tp_core.h net: ioctl: Use kernel memory on protocol ioctl callbacks 2023-06-15 22:33:26 -07:00
l2tp_debugfs.c l2tp: l2tp_debugfs: fix Clang -Wformat warnings 2022-07-08 12:14:36 +01:00
l2tp_eth.c l2tp: move from strlcpy with unused retval to strscpy 2022-08-22 17:59:46 -07:00
l2tp_ip.c sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
l2tp_ip6.c ipv6: remove hard coded limitation on ipv6_pinfo 2023-07-24 09:39:31 +01:00
l2tp_netlink.c genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
l2tp_ppp.c l2tp: Avoid possible recursive deadlock in l2tp_tunnel_register() 2023-02-20 09:25:20 +00:00
trace.h l2tp: add tracepoint definitions in trace.h 2020-08-22 12:44:37 -07:00