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dtrace: another update of the siftr probe

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This adds the changes corresponding to
https://cgit.freebsd.org/src/commit/?id=d090464ecd4af5cd400ef5cbbfe8409d019eac34
to the siftr probe.

Reviewed by:		rscheff
Sponsored by:		Netflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D40824
This commit is contained in:
Michael Tuexen 2023-07-01 02:45:16 +02:00
parent cade9a8e37
commit 643d067119
2 changed files with 8 additions and 13 deletions
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8
cddl/lib/libdtrace/siftr.d
View file

@ -54,12 +54,12 @@ typedef struct siftrinfo {
uint32_t snd_ssthresh;
int conn_state;
u_int max_seg_size;
int smoothed_rtt;
uint32_t srtt;
u_char sack_enabled;
u_char snd_scale;
u_char rcv_scale;
u_int flags;
int rxt_length;
uint32_t rto;
u_int snd_buf_hiwater;
u_int snd_buf_cc;
u_int rcv_buf_hiwater;
@ -84,12 +84,12 @@ translator siftrinfo_t < struct pkt_node *p > {
snd_ssthresh = p == NULL ? 0 : p->snd_ssthresh;
conn_state = p == NULL ? 0 : p->conn_state;
max_seg_size = p == NULL ? 0 : p->max_seg_size;
smoothed_rtt = p == NULL ? 0 : p->smoothed_rtt;
srtt = p == NULL ? 0 : p->srtt;
sack_enabled = p == NULL ? 0 : p->sack_enabled;
snd_scale = p == NULL ? 0 : p->snd_scale;
rcv_scale = p == NULL ? 0 : p->rcv_scale;
flags = p == NULL ? 0 : p->flags;
rxt_length = p == NULL ? 0 : p->rxt_length;
rto = p == NULL ? 0 : p->rto;
snd_buf_hiwater = p == NULL ? 0 : p->snd_buf_hiwater;
snd_buf_cc = p == NULL ? 0 : p->snd_buf_cc;
rcv_buf_hiwater = p == NULL ? 0 : p->rcv_buf_hiwater;

13
share/man/man4/dtrace_tcp.4
View file

@ -346,12 +346,8 @@ in
.Pa /usr/lib/dtrace/tcp.d .
.It Vt u_int max_seg_size
The maximum segment size for the flow, in bytes.
.It Vt int smoothed_rtt
The current smoothed RTT estimate for the flow, in units of TCP_RTT_SCALE * HZ,
where TCP_RTT_SCALE is a define found in
.Pa /usr/include/netinet/tcp_var.h ,
and HZ is the kernel's tick timer.
Divide by TCP_RTT_SCALE * HZ to get the RTT in secs.
.It Vt uint32_t srtt
The current smoothed RTT (SRTT) for the flow in microseconds.
.It Vt u_char sack_enabled
SACK enabled indicator. 1 if SACK enabled, 0 otherwise.
.It Vt u_char snd_scale
@ -360,9 +356,8 @@ The current window scaling factor for the sending window.
The current window scaling factor for the receiving window.
.It Vt u_int flags
The current value of the t_flags for the flow.
.It Vt int rxt_length
The current retransmission timeout length for the flow, in units of HZ, where HZ
is the kernel's tick timer.
.It Vt uint32_t rto
The current retransmission timeout (RTO) for the flow in microseconds.
Divide by HZ to get the timeout length in seconds.
.It Vt u_int snd_buf_hiwater
The current size of the socket send buffer in bytes.