forked from Minki/linux
1c885808e4
This patch exports the sender chronograph stats via the socket SO_TIMESTAMPING channel. Currently we can instrument how long a particular application unit of data was queued in TCP by tracking SOF_TIMESTAMPING_TX_SOFTWARE and SOF_TIMESTAMPING_TX_SCHED. Having these sender chronograph stats exported simultaneously along with these timestamps allow further breaking down the various sender limitation. For example, a video server can tell if a particular chunk of video on a connection takes a long time to deliver because TCP was experiencing small receive window. It is not possible to tell before this patch without packet traces. To prepare these stats, the user needs to set SOF_TIMESTAMPING_OPT_STATS and SOF_TIMESTAMPING_OPT_TSONLY flags while requesting other SOF_TIMESTAMPING TX timestamps. When the timestamps are available in the error queue, the stats are returned in a separate control message of type SCM_TIMESTAMPING_OPT_STATS, in a list of TLVs (struct nlattr) of types: TCP_NLA_BUSY_TIME, TCP_NLA_RWND_LIMITED, TCP_NLA_SNDBUF_LIMITED. Unit is microsecond. Signed-off-by: Francis Yan <francisyyan@gmail.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
103 lines
2.3 KiB
C
103 lines
2.3 KiB
C
#ifndef _UAPI_ASM_SOCKET_H
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#define _UAPI_ASM_SOCKET_H
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#include <asm/sockios.h>
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/* For setsockopt(2) */
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/*
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* Note: we only bother about making the SOL_SOCKET options
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* same as OSF/1, as that's all that "normal" programs are
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* likely to set. We don't necessarily want to be binary
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* compatible with _everything_.
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*/
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#define SOL_SOCKET 0xffff
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#define SO_DEBUG 0x0001
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#define SO_REUSEADDR 0x0004
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#define SO_KEEPALIVE 0x0008
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#define SO_DONTROUTE 0x0010
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#define SO_BROADCAST 0x0020
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#define SO_LINGER 0x0080
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#define SO_OOBINLINE 0x0100
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#define SO_REUSEPORT 0x0200
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#define SO_TYPE 0x1008
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#define SO_ERROR 0x1007
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#define SO_SNDBUF 0x1001
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#define SO_RCVBUF 0x1002
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#define SO_SNDBUFFORCE 0x100a
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#define SO_RCVBUFFORCE 0x100b
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#define SO_RCVLOWAT 0x1010
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#define SO_SNDLOWAT 0x1011
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#define SO_RCVTIMEO 0x1012
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#define SO_SNDTIMEO 0x1013
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#define SO_ACCEPTCONN 0x1014
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#define SO_PROTOCOL 0x1028
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#define SO_DOMAIN 0x1029
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/* linux-specific, might as well be the same as on i386 */
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#define SO_NO_CHECK 11
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#define SO_PRIORITY 12
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#define SO_BSDCOMPAT 14
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#define SO_PASSCRED 17
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#define SO_PEERCRED 18
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#define SO_BINDTODEVICE 25
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/* Socket filtering */
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#define SO_ATTACH_FILTER 26
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#define SO_DETACH_FILTER 27
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#define SO_GET_FILTER SO_ATTACH_FILTER
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#define SO_PEERNAME 28
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#define SO_TIMESTAMP 29
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#define SCM_TIMESTAMP SO_TIMESTAMP
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#define SO_PEERSEC 30
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#define SO_PASSSEC 34
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#define SO_TIMESTAMPNS 35
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#define SCM_TIMESTAMPNS SO_TIMESTAMPNS
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/* Security levels - as per NRL IPv6 - don't actually do anything */
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#define SO_SECURITY_AUTHENTICATION 19
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#define SO_SECURITY_ENCRYPTION_TRANSPORT 20
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#define SO_SECURITY_ENCRYPTION_NETWORK 21
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#define SO_MARK 36
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#define SO_TIMESTAMPING 37
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#define SCM_TIMESTAMPING SO_TIMESTAMPING
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#define SO_RXQ_OVFL 40
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#define SO_WIFI_STATUS 41
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#define SCM_WIFI_STATUS SO_WIFI_STATUS
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#define SO_PEEK_OFF 42
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/* Instruct lower device to use last 4-bytes of skb data as FCS */
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#define SO_NOFCS 43
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#define SO_LOCK_FILTER 44
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#define SO_SELECT_ERR_QUEUE 45
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#define SO_BUSY_POLL 46
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#define SO_MAX_PACING_RATE 47
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#define SO_BPF_EXTENSIONS 48
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#define SO_INCOMING_CPU 49
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#define SO_ATTACH_BPF 50
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#define SO_DETACH_BPF SO_DETACH_FILTER
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#define SO_ATTACH_REUSEPORT_CBPF 51
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#define SO_ATTACH_REUSEPORT_EBPF 52
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#define SO_CNX_ADVICE 53
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#define SCM_TIMESTAMPING_OPT_STATS 54
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#endif /* _UAPI_ASM_SOCKET_H */
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