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linux/arch/sparc/include/uapi/asm
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Vadim Fedorenko 4aecca4c76 net_tstamp: add SCM_TS_OPT_ID to provide OPT_ID in control message 
SOF_TIMESTAMPING_OPT_ID socket option flag gives a way to correlate TX
timestamps and packets sent via socket. Unfortunately, there is no way
to reliably predict socket timestamp ID value in case of error returned
by sendmsg. For UDP sockets it's impossible because of lockless
nature of UDP transmit, several threads may send packets in parallel. In
case of RAW sockets MSG_MORE option makes things complicated. More
details are in the conversation [1].
This patch adds new control message type to give user-space
software an opportunity to control the mapping between packets and
values by providing ID with each sendmsg for UDP sockets.
The documentation is also added in this patch.

[1] https://lore.kernel.org/netdev/CALCETrU0jB+kg0mhV6A8mrHfTE1D1pr1SD_B9Eaa9aDPfgHdtA@mail.gmail.com/

Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Jason Xing <kerneljasonxing@gmail.com>
Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
Link: https://patch.msgid.link/20241001125716.2832769-2-vadfed@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 		2024-10-04 11:52:19 -07:00
..
Kbuild treewide: Add SPDX license identifier - Kbuild 2019-05-30 11:32:33 -07:00
apc.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
asi.h sparc64: Add support for ADI register fields, ASIs and traps 2018-03-18 07:38:45 -07:00
auxvec.h sparc: Make auxiliary vectors for ADI available on 32-bit as well 2018-03-20 11:14:31 -04:00
bitsperlong.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
byteorder.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
display7seg.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
envctrl.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
errno.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
fbio.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
fcntl.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
ioctl.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
ioctls.h tty/serial_core: add ISO7816 infrastructure 2018-10-02 13:38:55 -07:00
ipcbuf.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 2020-01-30 07:36:43 -08:00
mman.h mm/mmap: move common defines to mman-common.h 2019-07-16 19:23:25 -07:00
msgbuf.h arch: msgbuf.h: make uapi asm/msgbuf.h self-contained 2019-12-04 19:44:14 -08:00
openpromio.h sparc: openpromio: Address -Warray-bounds warning 2023-07-12 13:24:20 -06:00
oradax.h treewide: add "WITH Linux-syscall-note" to SPDX tag of uapi headers 2019-07-25 11:05:10 +02:00
param.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
perfctr.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
poll.h unify {de,}mangle_poll(), get rid of kernel-side POLL... 2018-02-11 14:37:22 -08:00
posix_types.h arch: sparc: Override struct __kernel_old_timeval 2019-02-03 11:17:30 -08:00
psr.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
psrcompat.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
pstate.h sparc64: Add support for ADI register fields, ASIs and traps 2018-03-18 07:38:45 -07:00
ptrace.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
resource.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
sembuf.h arch: sembuf.h: make uapi asm/sembuf.h self-contained 2019-12-04 19:44:14 -08:00
setup.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
shmbuf.h shmbuf.h: add asm/shmbuf.h to UAPI compile-test coverage 2022-02-17 09:09:37 +01:00
sigcontext.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
siginfo.h signal/sparc: si_trapno is only used with SIGILL ILL_ILLTRP 2021-07-23 13:08:57 -05:00
signal.h sparc64: fix building assembly files 2022-02-18 17:01:38 +01:00
socket.h net_tstamp: add SCM_TS_OPT_ID to provide OPT_ID in control message 2024-10-04 11:52:19 -07:00
stat.h sparc: fix mis-use of __kernel_{uid,gid}_t in uapi/asm/stat.h 2022-06-02 17:38:15 +02:00
swab.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
termbits.h sparc: move struct termio to asm/termios.h 2024-04-22 15:33:06 +02:00
termios.h sparc: move struct termio to asm/termios.h 2024-04-22 15:33:06 +02:00
traps.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
uctx.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
unistd.h sparc: generate uapi header and system call table files 2018-11-18 18:52:22 -08:00
utrap.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00
watchdog.h License cleanup: add SPDX license identifier to uapi header files with no license 2017-11-02 11:19:54 +01:00