mirror of
https://github.com/torvalds/linux.git
synced 2024-11-07 12:41:55 +00:00
62748f32d5
As mentioned in commit afe4fd0624 ("pkt_sched: fq: Fair Queue packet
scheduler"), this patch adds a new socket option.
SO_MAX_PACING_RATE offers the application the ability to cap the
rate computed by transport layer. Value is in bytes per second.
u32 val = 1000000;
setsockopt(sockfd, SOL_SOCKET, SO_MAX_PACING_RATE, &val, sizeof(val));
To be effectively paced, a flow must use FQ packet scheduler.
Note that a packet scheduler takes into account the headers for its
computations. The effective payload rate depends on MSS and retransmits
if any.
I chose to make this pacing rate a SOL_SOCKET option instead of a
TCP one because this can be used by other protocols.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Steinar H. Gunderson <sesse@google.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
84 lines
1.8 KiB
C
84 lines
1.8 KiB
C
#ifndef __ASM_GENERIC_SOCKET_H
|
|
#define __ASM_GENERIC_SOCKET_H
|
|
|
|
#include <asm/sockios.h>
|
|
|
|
/* For setsockopt(2) */
|
|
#define SOL_SOCKET 1
|
|
|
|
#define SO_DEBUG 1
|
|
#define SO_REUSEADDR 2
|
|
#define SO_TYPE 3
|
|
#define SO_ERROR 4
|
|
#define SO_DONTROUTE 5
|
|
#define SO_BROADCAST 6
|
|
#define SO_SNDBUF 7
|
|
#define SO_RCVBUF 8
|
|
#define SO_SNDBUFFORCE 32
|
|
#define SO_RCVBUFFORCE 33
|
|
#define SO_KEEPALIVE 9
|
|
#define SO_OOBINLINE 10
|
|
#define SO_NO_CHECK 11
|
|
#define SO_PRIORITY 12
|
|
#define SO_LINGER 13
|
|
#define SO_BSDCOMPAT 14
|
|
#define SO_REUSEPORT 15
|
|
#ifndef SO_PASSCRED /* powerpc only differs in these */
|
|
#define SO_PASSCRED 16
|
|
#define SO_PEERCRED 17
|
|
#define SO_RCVLOWAT 18
|
|
#define SO_SNDLOWAT 19
|
|
#define SO_RCVTIMEO 20
|
|
#define SO_SNDTIMEO 21
|
|
#endif
|
|
|
|
/* Security levels - as per NRL IPv6 - don't actually do anything */
|
|
#define SO_SECURITY_AUTHENTICATION 22
|
|
#define SO_SECURITY_ENCRYPTION_TRANSPORT 23
|
|
#define SO_SECURITY_ENCRYPTION_NETWORK 24
|
|
|
|
#define SO_BINDTODEVICE 25
|
|
|
|
/* Socket filtering */
|
|
#define SO_ATTACH_FILTER 26
|
|
#define SO_DETACH_FILTER 27
|
|
#define SO_GET_FILTER SO_ATTACH_FILTER
|
|
|
|
#define SO_PEERNAME 28
|
|
#define SO_TIMESTAMP 29
|
|
#define SCM_TIMESTAMP SO_TIMESTAMP
|
|
|
|
#define SO_ACCEPTCONN 30
|
|
|
|
#define SO_PEERSEC 31
|
|
#define SO_PASSSEC 34
|
|
#define SO_TIMESTAMPNS 35
|
|
#define SCM_TIMESTAMPNS SO_TIMESTAMPNS
|
|
|
|
#define SO_MARK 36
|
|
|
|
#define SO_TIMESTAMPING 37
|
|
#define SCM_TIMESTAMPING SO_TIMESTAMPING
|
|
|
|
#define SO_PROTOCOL 38
|
|
#define SO_DOMAIN 39
|
|
|
|
#define SO_RXQ_OVFL 40
|
|
|
|
#define SO_WIFI_STATUS 41
|
|
#define SCM_WIFI_STATUS SO_WIFI_STATUS
|
|
#define SO_PEEK_OFF 42
|
|
|
|
/* Instruct lower device to use last 4-bytes of skb data as FCS */
|
|
#define SO_NOFCS 43
|
|
|
|
#define SO_LOCK_FILTER 44
|
|
|
|
#define SO_SELECT_ERR_QUEUE 45
|
|
|
|
#define SO_BUSY_POLL 46
|
|
|
|
#define SO_MAX_PACING_RATE 47
|
|
|
|
#endif /* __ASM_GENERIC_SOCKET_H */
|