Frederik Deweerdt bc6d8cc2c5 splice: do not checksum AF_UNIX sockets ... commit 6bd8614fc2d076fc21b7488c9f279853960964e2 upstream. When `skb_splice_from_iter` was introduced, it inadvertently added checksumming for AF_UNIX sockets. This resulted in significant slowdowns, for example when using sendfile over unix sockets. Using the test code in [1] in my test setup (2G single core qemu), the client receives a 1000M file in: - without the patch: 1482ms (+/- 36ms) - with the patch: 652.5ms (+/- 22.9ms) This commit addresses the issue by marking checksumming as unnecessary in `unix_stream_sendmsg` Cc: stable@vger.kernel.org Signed-off-by: Frederik Deweerdt <deweerdt.lkml@gmail.com> Fixes: 2e910b9532 ("net: Add a function to splice pages into an skbuff for MSG_SPLICE_PAGES") Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Link: https://patch.msgid.link/Z1fMaHkRf8cfubuE@xiberoa Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-12-19 18:11:21 +01:00
..
af_unix.c	splice: do not checksum AF_UNIX sockets	2024-12-19 18:11:21 +01:00
diag.c	sock_diag: add module pointer to "struct sock_diag_handler"	2024-12-09 10:32:09 +01:00
garbage.c	af_unix: Suppress false-positive lockdep splat for spin_lock() in __unix_gc().	2024-05-02 16:32:40 +02:00
Kconfig	af_unix: Kconfig: make CONFIG_UNIX bool	2023-06-12 10:45:50 +01:00
Makefile	af_unix: Implement ->psock_update_sk_prot()	2021-07-15 18:17:50 -07:00
scm.c	af_unix: Do not use atomic ops for unix_sk(sk)->inflight.	2024-04-17 11:19:32 +02:00
scm.h	net: split out functions related to registering inflight socket files	2019-02-28 08:24:23 -07:00
sysctl_net_unix.c	networking: Update to register_net_sysctl_sz	2023-08-15 15:26:18 -07:00
unix_bpf.c	af_unix: Disable MSG_OOB handling for sockets in sockmap/sockhash	2024-08-03 08:54:36 +02:00