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linux-next/arch/cris/include
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
..
arch-v10/arch sched: Rename sched.c as sched/core.c in comments and Documentation 2013-06-19 12:58:42 +02:00
arch-v32 UAPI: Fix up empty files in arch/cris/ 2012-12-20 12:51:25 +01:00
asm CRIS: remove unused current_regs 2013-09-10 17:29:20 +02:00
uapi net: introduce SO_MAX_PACING_RATE 2013-09-28 15:35:41 -07:00