dtrace: another update of the siftr probe
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
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@ -54,12 +54,12 @@ typedef struct siftrinfo {
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uint32_t snd_ssthresh;
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int conn_state;
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u_int max_seg_size;
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int smoothed_rtt;
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uint32_t srtt;
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u_char sack_enabled;
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u_char snd_scale;
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u_char rcv_scale;
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u_int flags;
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int rxt_length;
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uint32_t rto;
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u_int snd_buf_hiwater;
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u_int snd_buf_cc;
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u_int rcv_buf_hiwater;
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@ -84,12 +84,12 @@ translator siftrinfo_t < struct pkt_node *p > {
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snd_ssthresh = p == NULL ? 0 : p->snd_ssthresh;
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conn_state = p == NULL ? 0 : p->conn_state;
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max_seg_size = p == NULL ? 0 : p->max_seg_size;
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smoothed_rtt = p == NULL ? 0 : p->smoothed_rtt;
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srtt = p == NULL ? 0 : p->srtt;
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sack_enabled = p == NULL ? 0 : p->sack_enabled;
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snd_scale = p == NULL ? 0 : p->snd_scale;
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rcv_scale = p == NULL ? 0 : p->rcv_scale;
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flags = p == NULL ? 0 : p->flags;
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rxt_length = p == NULL ? 0 : p->rxt_length;
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rto = p == NULL ? 0 : p->rto;
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snd_buf_hiwater = p == NULL ? 0 : p->snd_buf_hiwater;
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snd_buf_cc = p == NULL ? 0 : p->snd_buf_cc;
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rcv_buf_hiwater = p == NULL ? 0 : p->rcv_buf_hiwater;
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@ -346,12 +346,8 @@ in
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.Pa /usr/lib/dtrace/tcp.d .
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.It Vt u_int max_seg_size
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The maximum segment size for the flow, in bytes.
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.It Vt int smoothed_rtt
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The current smoothed RTT estimate for the flow, in units of TCP_RTT_SCALE * HZ,
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where TCP_RTT_SCALE is a define found in
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.Pa /usr/include/netinet/tcp_var.h ,
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and HZ is the kernel's tick timer.
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Divide by TCP_RTT_SCALE * HZ to get the RTT in secs.
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.It Vt uint32_t srtt
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The current smoothed RTT (SRTT) for the flow in microseconds.
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.It Vt u_char sack_enabled
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SACK enabled indicator. 1 if SACK enabled, 0 otherwise.
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.It Vt u_char snd_scale
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@ -360,9 +356,8 @@ The current window scaling factor for the sending window.
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The current window scaling factor for the receiving window.
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.It Vt u_int flags
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The current value of the t_flags for the flow.
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.It Vt int rxt_length
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The current retransmission timeout length for the flow, in units of HZ, where HZ
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is the kernel's tick timer.
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.It Vt uint32_t rto
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The current retransmission timeout (RTO) for the flow in microseconds.
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Divide by HZ to get the timeout length in seconds.
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.It Vt u_int snd_buf_hiwater
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The current size of the socket send buffer in bytes.
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