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cxgbe(4): Provide information about traffic classes in the sysctl mib.

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Sponsored by:	Chelsio Communications
This commit is contained in:
Navdeep Parhar 2016-06-07 06:42:35 +00:00
parent 949883bd72
commit 0bc01d66b6
1 changed files with 122 additions and 1 deletions
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123
sys/dev/cxgbe/t4_main.c
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@ -496,6 +496,7 @@ static int sysctl_tp_la(SYSCTL_HANDLER_ARGS);
static int sysctl_tx_rate(SYSCTL_HANDLER_ARGS);
static int sysctl_ulprx_la(SYSCTL_HANDLER_ARGS);
static int sysctl_wcwr_stats(SYSCTL_HANDLER_ARGS);
static int sysctl_tc_params(SYSCTL_HANDLER_ARGS);
#endif
#ifdef TCP_OFFLOAD
static int sysctl_tp_tick(SYSCTL_HANDLER_ARGS);
@ -5034,8 +5035,10 @@ cxgbe_sysctls(struct port_info *pi)
{
struct sysctl_ctx_list *ctx;
struct sysctl_oid *oid;
struct sysctl_oid_list *children;
struct sysctl_oid_list *children, *children2;
struct adapter *sc = pi->adapter;
int i;
char name[16];
ctx = device_get_sysctl_ctx(pi->dev);
@ -5063,6 +5066,29 @@ cxgbe_sysctls(struct port_info *pi)
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "max_speed", CTLFLAG_RD, NULL,
port_top_speed(pi), "max speed (in Gbps)");
/*
* dev.(cxgbe|cxl).X.tc.
*/
oid = SYSCTL_ADD_NODE(ctx, children, OID_AUTO, "tc", CTLFLAG_RD, NULL,
"Tx scheduler traffic classes");
for (i = 0; i < sc->chip_params->nsched_cls; i++) {
struct tx_sched_class *tc = &pi->tc[i];
snprintf(name, sizeof(name), "%d", i);
children2 = SYSCTL_CHILDREN(SYSCTL_ADD_NODE(ctx,
SYSCTL_CHILDREN(oid), OID_AUTO, name, CTLFLAG_RD, NULL,
"traffic class"));
SYSCTL_ADD_UINT(ctx, children2, OID_AUTO, "flags", CTLFLAG_RD,
&tc->flags, 0, "flags");
SYSCTL_ADD_UINT(ctx, children2, OID_AUTO, "refcount",
CTLFLAG_RD, &tc->refcount, 0, "references to this class");
#ifdef SBUF_DRAIN
SYSCTL_ADD_PROC(ctx, children2, OID_AUTO, "params",
CTLTYPE_STRING | CTLFLAG_RD, sc, (pi->port_id << 16) | i,
sysctl_tc_params, "A", "traffic class parameters");
#endif
}
/*
* dev.cxgbe.X.stats.
*/
@ -7456,6 +7482,101 @@ sysctl_wcwr_stats(SYSCTL_HANDLER_ARGS)
return (rc);
}
static int
sysctl_tc_params(SYSCTL_HANDLER_ARGS)
{
struct adapter *sc = arg1;
struct tx_sched_class *tc;
struct t4_sched_class_params p;
struct sbuf *sb;
int i, rc, port_id, flags, mbps, gbps;
rc = sysctl_wire_old_buffer(req, 0);
if (rc != 0)
return (rc);
sb = sbuf_new_for_sysctl(NULL, NULL, 4096, req);
if (sb == NULL)
return (ENOMEM);
port_id = arg2 >> 16;
MPASS(port_id < sc->params.nports);
MPASS(sc->port[port_id] != NULL);
i = arg2 & 0xffff;
MPASS(i < sc->chip_params->nsched_cls);
tc = &sc->port[port_id]->tc[i];
rc = begin_synchronized_op(sc, NULL, HOLD_LOCK | SLEEP_OK | INTR_OK,
"t4tc_p");
if (rc)
goto done;
flags = tc->flags;
p = tc->params;
end_synchronized_op(sc, LOCK_HELD);
if ((flags & TX_SC_OK) == 0) {
sbuf_printf(sb, "none");
goto done;
}
if (p.level == SCHED_CLASS_LEVEL_CL_WRR) {
sbuf_printf(sb, "cl-wrr weight %u", p.weight);
goto done;
} else if (p.level == SCHED_CLASS_LEVEL_CL_RL)
sbuf_printf(sb, "cl-rl");
else if (p.level == SCHED_CLASS_LEVEL_CH_RL)
sbuf_printf(sb, "ch-rl");
else {
rc = ENXIO;
goto done;
}
if (p.ratemode == SCHED_CLASS_RATEMODE_REL) {
/* XXX: top speed or actual link speed? */
gbps = port_top_speed(sc->port[port_id]);
sbuf_printf(sb, " %u%% of %uGbps", p.maxrate, gbps);
}
else if (p.ratemode == SCHED_CLASS_RATEMODE_ABS) {
switch (p.rateunit) {
case SCHED_CLASS_RATEUNIT_BITS:
mbps = p.maxrate / 1000;
gbps = p.maxrate / 1000000;
if (p.maxrate == gbps * 1000000)
sbuf_printf(sb, " %uGbps", gbps);
else if (p.maxrate == mbps * 1000)
sbuf_printf(sb, " %uMbps", mbps);
else
sbuf_printf(sb, " %uKbps", p.maxrate);
break;
case SCHED_CLASS_RATEUNIT_PKTS:
sbuf_printf(sb, " %upps", p.maxrate);
break;
default:
rc = ENXIO;
goto done;
}
}
switch (p.mode) {
case SCHED_CLASS_MODE_CLASS:
sbuf_printf(sb, " aggregate");
break;
case SCHED_CLASS_MODE_FLOW:
sbuf_printf(sb, " per-flow");
break;
default:
rc = ENXIO;
goto done;
}
done:
if (rc == 0)
rc = sbuf_finish(sb);
sbuf_delete(sb);
return (rc);
}
#endif
#ifdef TCP_OFFLOAD