> On 29 Apr 2015, at 17:21 , Bjoern A. Zeeb <b...@freebsd.org> wrote:
>
>
>> On 29 Apr 2015, at 17:19 , George V. Neville-Neil <g...@freebsd.org> wrote:
>>
>> Author: gnn
>> Date: Wed Apr 29 17:19:55 2015
>> New Revision: 282240
>> URL: https://svnweb.freebsd.org/changeset/base/282240
>>
>> Log:
>> Brief demo script showing the various values that can be read via
>> the new SIFTR statically defined tracepoint (SDT).
>>
>> Differential Revision: https://reviews.freebsd.org/D2387
>> Reviewed by: bz, markj
>>
>
> That’s not the latest revision; sorry.
(see, no dot at end of comment)
Also you forgot to svn add share/dtrace/siftr I think?
>> Modified:
>> head/cddl/lib/libdtrace/tcp.d
>> head/sys/netinet/in_kdtrace.c
>> head/sys/netinet/in_kdtrace.h
>> head/sys/netinet/siftr.c
>>
>> Modified: head/cddl/lib/libdtrace/tcp.d
>> ==============================================================================
>> --- head/cddl/lib/libdtrace/tcp.d Wed Apr 29 17:18:41 2015
>> (r282239)
>> +++ head/cddl/lib/libdtrace/tcp.d Wed Apr 29 17:19:55 2015
>> (r282240)
>> @@ -241,3 +241,78 @@ translator tcpinfoh_t < struct tcphdr *p
>> translator tcplsinfo_t < int s > {
>> tcps_state = s;
>> };
>> +
>> +/*
>> + * Convert a SIFTR direction value to a string
>> + */
>> +#pragma D binding "1.12.1" SIFTR_IN
>> +inline int SIFTR_IN = 1;
>> +#pragma D binding "1.12.1" SIFTR_OUT
>> +inline int SIFTR_OUT = 2;
>> +
>> +/* SIFTR direction strings. */
>> +#pragma D binding "1.12.1" siftr_dir_string
>> +inline string siftr_dir_string[uint8_t direction] =
>> + direction == SIFTR_IN ? "in" :
>> + direction == SIFTR_OUT ? "out" :
>> + "unknown" ;
>> +
>> +typedef struct siftrinfo {
>> + struct timeval tval;
>> + uint8_t direction;
>> + uint8_t ipver;
>> + uint32_t hash;
>> + uint16_t tcp_localport;
>> + uint16_t tcp_foreignport;
>> + uint64_t snd_cwnd;
>> + u_long snd_wnd;
>> + u_long rcv_wnd;
>> + u_long snd_bwnd;
>> + u_long snd_ssthresh;
>> + int conn_state;
>> + u_int max_seg_size;
>> + int smoothed_rtt;
>> + u_char sack_enabled;
>> + u_char snd_scale;
>> + u_char rcv_scale;
>> + u_int flags;
>> + int rxt_length;
>> + u_int snd_buf_hiwater;
>> + u_int snd_buf_cc;
>> + u_int rcv_buf_hiwater;
>> + u_int rcv_buf_cc;
>> + u_int sent_inflight_bytes;
>> + int t_segqlen;
>> + u_int flowid;
>> + u_int flowtype;
>> +} siftrinfo_t;
>> +
>> +#pragma D binding "1.12.1" translator
>> +translator siftrinfo_t < struct pkt_node *p > {
>> + direction = p == NULL ? 0 : p->direction;
>> + ipver = p == NULL ? 0 : p->ipver;
>> + hash = p == NULL ? 0 : p->hash;
>> + tcp_localport = p == NULL ? 0 : ntohs(p->tcp_localport);
>> + tcp_foreignport = p == NULL ? 0 : ntohs(p->tcp_foreignport);
>> + snd_cwnd = p == NULL ? 0 : p->snd_cwnd;
>> + snd_wnd = p == NULL ? 0 : p->snd_wnd;
>> + rcv_wnd = p == NULL ? 0 : p->rcv_wnd;
>> + snd_bwnd = p == NULL ? 0 : p->snd_bwnd;
>> + 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;
>> + 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;
>> + 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;
>> + rcv_buf_cc = p == NULL ? 0 : p->rcv_buf_cc;
>> + sent_inflight_bytes = p == NULL ? 0 : p->sent_inflight_bytes;
>> + t_segqlen = p == NULL ? 0 : p->t_segqlen;
>> + flowid = p == NULL ? 0 : p->flowid;
>> + flowtype = p == NULL ? 0 : p->flowtype;
>> +};
>>
>> Modified: head/sys/netinet/in_kdtrace.c
>> ==============================================================================
>> --- head/sys/netinet/in_kdtrace.c Wed Apr 29 17:18:41 2015
>> (r282239)
>> +++ head/sys/netinet/in_kdtrace.c Wed Apr 29 17:19:55 2015
>> (r282240)
>> @@ -102,6 +102,9 @@ SDT_PROBE_DEFINE5_XLATE(tcp, , , send,
>> "struct tcpcb *", "tcpsinfo_t *" ,
>> "struct tcphdr *", "tcpinfo_t *");
>>
>> +SDT_PROBE_DEFINE1_XLATE(tcp, , , siftr,
>> + "struct pkt_node *", "siftrinfo_t *");
>> +
>> SDT_PROBE_DEFINE6_XLATE(tcp, , , state__change,
>> "void *", "void *",
>> "struct tcpcb *", "csinfo_t *",
>>
>> Modified: head/sys/netinet/in_kdtrace.h
>> ==============================================================================
>> --- head/sys/netinet/in_kdtrace.h Wed Apr 29 17:18:41 2015
>> (r282239)
>> +++ head/sys/netinet/in_kdtrace.h Wed Apr 29 17:19:55 2015
>> (r282240)
>> @@ -32,6 +32,8 @@
>> SDT_PROBE6(ip, , , probe, arg0, arg1, arg2, arg3, arg4, arg5)
>> #define UDP_PROBE(probe, arg0, arg1, arg2, arg3, arg4)
>> \
>> SDT_PROBE5(udp, , , probe, arg0, arg1, arg2, arg3, arg4)
>> +#define TCP_PROBE1(probe, arg0) \
>> + SDT_PROBE1(tcp, , , probe, arg0)
>> #define TCP_PROBE5(probe, arg0, arg1, arg2, arg3, arg4)
>> \
>> SDT_PROBE5(tcp, , , probe, arg0, arg1, arg2, arg3, arg4)
>> #define TCP_PROBE6(probe, arg0, arg1, arg2, arg3, arg4, arg5)
>> \
>> @@ -51,6 +53,7 @@ SDT_PROBE_DECLARE(tcp, , , connect__refu
>> SDT_PROBE_DECLARE(tcp, , , connect__request);
>> SDT_PROBE_DECLARE(tcp, , , receive);
>> SDT_PROBE_DECLARE(tcp, , , send);
>> +SDT_PROBE_DECLARE(tcp, , , siftr);
>> SDT_PROBE_DECLARE(tcp, , , state__change);
>>
>> SDT_PROBE_DECLARE(udp, , , receive);
>>
>> Modified: head/sys/netinet/siftr.c
>> ==============================================================================
>> --- head/sys/netinet/siftr.c Wed Apr 29 17:18:41 2015 (r282239)
>> +++ head/sys/netinet/siftr.c Wed Apr 29 17:19:55 2015 (r282240)
>> @@ -75,6 +75,7 @@ __FBSDID("$FreeBSD$");
>> #include <sys/pcpu.h>
>> #include <sys/proc.h>
>> #include <sys/sbuf.h>
>> +#include <sys/sdt.h>
>> #include <sys/smp.h>
>> #include <sys/socket.h>
>> #include <sys/socketvar.h>
>> @@ -86,6 +87,7 @@ __FBSDID("$FreeBSD$");
>> #include <net/pfil.h>
>>
>> #include <netinet/in.h>
>> +#include <netinet/in_kdtrace.h>
>> #include <netinet/in_pcb.h>
>> #include <netinet/in_systm.h>
>> #include <netinet/in_var.h>
>> @@ -547,6 +549,7 @@ siftr_process_pkt(struct pkt_node * pkt_
>> }
>> #endif
>>
>> + TCP_PROBE1(siftr, pkt_node);
>> alq_post_flags(siftr_alq, log_buf, 0);
>> }
>>
>>
>
> —
> Bjoern A. Zeeb Charles Haddon Spurgeon:
> "Friendship is one of the sweetest joys of life. Many might have failed
> beneath the bitterness of their trial had they not found a friend."
>
>
—
Bjoern A. Zeeb Charles Haddon Spurgeon:
"Friendship is one of the sweetest joys of life. Many might have failed
beneath the bitterness of their trial had they not found a friend."
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