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Eric Dumazet 62748f32d5 net: introduce SO_MAX_PACING_RATE 
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>
 		2013-09-28 15:35:41 -07:00
..
Kbuild UAPI: Put a comment into uapi/asm-generic/kvm_para.h and use it from arches 2012-10-17 12:32:07 +01:00
auxvec.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
bitsperlong.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
break.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
byteorder.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
cmpxchg.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
errno.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
fcntl.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
fpu.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
gcc_intrin.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
ia64regs.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
intel_intrin.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
intrinsics.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
ioctl.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
ioctls.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
ipcbuf.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
kvm.h kvm: Allow build-time configuration of KVM device assignment 2013-04-28 12:58:56 +03:00
mman.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
msgbuf.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
param.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
perfmon.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
perfmon_default_smpl.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
poll.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
posix_types.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
ptrace.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
ptrace_offsets.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
resource.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
rse.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
sembuf.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
setup.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
shmbuf.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
sigcontext.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
siginfo.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
signal.h unify SS_ONSTACK/SS_DISABLE definitions 2012-12-19 18:07:39 -05:00
socket.h net: introduce SO_MAX_PACING_RATE 2013-09-28 15:35:41 -07:00
sockios.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
stat.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
statfs.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
swab.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
termbits.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
termios.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
types.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
ucontext.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00
unistd.h Wire up finit_module syscall 2013-01-03 10:57:23 -08:00
ustack.h UAPI: (Scripted) Disintegrate arch/ia64/include/asm 2012-10-09 09:47:00 +01:00