MINOR: mux-quic: provide a "show_sd" helper to output stream debugging info
It's very limited but at least provides the very basic info about QCS and
QCC when issuing "show sess all":
scf=0x7fa9642394a0 flags=0x00000080 state=EST endp=CONN,0x7fa9642351f0,0x02001001 sub=3
> qcs=0x7fa9642351f0 .flg=0x5 .id=396 .st=HCR .ctx=0x7fa9642353f0, .err=0
> qcc=0x7fa96405ce20 .flg=0 .nbsc=100 .nbhreq=100, .task=0x7fa964054260
co0=0x7fa96405cd50 ctrl=quic4 xprt=QUIC mux=QUIC data=STRM target=LISTENER:0x328c530
flags=0x00200300 fd=-1 fd.state=00 updt=0 fd.tmask=0x0
It will need to be improved but it's better than nothing already. This
should be backported to 2.6 if the other dumps are backported.
diff --git a/src/mux_quic.c b/src/mux_quic.c
index e29fa1c..c93a415 100644
--- a/src/mux_quic.c
+++ b/src/mux_quic.c
@@ -2334,6 +2334,33 @@
}
}
+/* for debugging with CLI's "show sess" command. May emit multiple lines, each
+ * new one being prefixed with <pfx>, if <pfx> is not NULL, otherwise a single
+ * line is used. Each field starts with a space so it's safe to print it after
+ * existing fields.
+ */
+static int qc_show_sd(struct buffer *msg, struct sedesc *sd, const char *pfx)
+{
+ struct qcs *qcs = sd->se;
+ struct qcc *qcc;
+ int ret = 0;
+
+ if (!qcs)
+ return ret;
+
+ chunk_appendf(msg, " qcs=%p .flg=%#x .id=%llu .st=%s .ctx=%p, .err=%#llx",
+ qcs, qcs->flags, (ull)qcs->id, qcs_st_to_str(qcs->st), qcs->ctx, (ull)qcs->err);
+
+ if (pfx)
+ chunk_appendf(msg, "\n%s", pfx);
+
+ qcc = qcs->qcc;
+ chunk_appendf(msg, " qcc=%p .flg=%#x .nbsc=%llu .nbhreq=%llu, .task=%p",
+ qcc, qcc->flags, (ull)qcc->nb_sc, (ull)qcc->nb_hreq, qcc->task);
+ return ret;
+}
+
+
static void qmux_trace_frm(const struct quic_frame *frm)
{
switch (frm->type) {
@@ -2407,6 +2434,7 @@
.subscribe = qc_subscribe,
.unsubscribe = qc_unsubscribe,
.wake = qc_wake,
+ .show_sd = qc_show_sd,
.flags = MX_FL_HTX|MX_FL_NO_UPG|MX_FL_FRAMED,
.name = "QUIC",
};