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cxgbe(4): sysctls to display the TOE's TCP timers.

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cask:~# sysctl -d dev.t5nex.0.toe
dev.t5nex.0.toe.finwait2_timer: FINWAIT2 timer (us)
dev.t5nex.0.toe.initial_srtt: Initial SRTT (us)
dev.t5nex.0.toe.keepalive_intvl: Keepidle interval (us)
dev.t5nex.0.toe.keepalive_idle: Keepidle idle timer (us)
dev.t5nex.0.toe.persist_max: Persist timer max (us)
dev.t5nex.0.toe.persist_min: Persist timer min (us)
dev.t5nex.0.toe.rexmt_max: Retransmit max (us)
dev.t5nex.0.toe.rexmt_min: Retransmit min (us)
dev.t5nex.0.toe.dack_timer: DACK timer (us)
dev.t5nex.0.toe.dack_tick: DACK tick (us)
dev.t5nex.0.toe.timestamp_tick: TCP timestamp tick (us)
dev.t5nex.0.toe.timer_tick: TP timer tick (us)
...

cask:~# sysctl dev.t5nex.0.toe
dev.t5nex.0.toe.finwait2_timer: 9765440
dev.t5nex.0.toe.initial_srtt: 244128
dev.t5nex.0.toe.keepalive_intvl: 73240800
dev.t5nex.0.toe.keepalive_idle: 7031116800
dev.t5nex.0.toe.persist_max: 9765440
dev.t5nex.0.toe.persist_min: 976544
dev.t5nex.0.toe.rexmt_max: 9765440
dev.t5nex.0.toe.rexmt_min: 244128
dev.t5nex.0.toe.dack_timer: 19520
dev.t5nex.0.toe.dack_tick: 32.768
dev.t5nex.0.toe.timestamp_tick: 1048.576
dev.t5nex.0.toe.timer_tick: 32.768
...
This commit is contained in:
Navdeep Parhar 2016-03-11 23:24:04 +00:00
parent 47cedcbd72
commit 959824daba
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=296689
1 changed files with 135 additions and 0 deletions
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135
sys/dev/cxgbe/t4_main.c
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@ -482,6 +482,9 @@ static int sysctl_tx_rate(SYSCTL_HANDLER_ARGS);
static int sysctl_ulprx_la(SYSCTL_HANDLER_ARGS);
static int sysctl_wcwr_stats(SYSCTL_HANDLER_ARGS);
#endif
static int sysctl_tp_tick(SYSCTL_HANDLER_ARGS);
static int sysctl_tp_dack_timer(SYSCTL_HANDLER_ARGS);
static int sysctl_tp_timer(SYSCTL_HANDLER_ARGS);
static uint32_t fconf_iconf_to_mode(uint32_t, uint32_t);
static uint32_t mode_to_fconf(uint32_t);
static uint32_t mode_to_iconf(uint32_t);
@ -4890,6 +4893,54 @@ t4_sysctls(struct adapter *sc)
sc->tt.tx_align = 1;
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "tx_align",
CTLFLAG_RW, &sc->tt.tx_align, 0, "chop and align payload");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "timer_tick",
CTLTYPE_STRING | CTLFLAG_RD, sc, 0, sysctl_tp_tick, "A",
"TP timer tick (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "timestamp_tick",
CTLTYPE_STRING | CTLFLAG_RD, sc, 1, sysctl_tp_tick, "A",
"TCP timestamp tick (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "dack_tick",
CTLTYPE_STRING | CTLFLAG_RD, sc, 2, sysctl_tp_tick, "A",
"DACK tick (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "dack_timer",
CTLTYPE_UINT | CTLFLAG_RD, sc, 0, sysctl_tp_dack_timer,
"IU", "DACK timer (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "rexmt_min",
CTLTYPE_ULONG | CTLFLAG_RD, sc, A_TP_RXT_MIN,
sysctl_tp_timer, "LU", "Retransmit min (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "rexmt_max",
CTLTYPE_ULONG | CTLFLAG_RD, sc, A_TP_RXT_MAX,
sysctl_tp_timer, "LU", "Retransmit max (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "persist_min",
CTLTYPE_ULONG | CTLFLAG_RD, sc, A_TP_PERS_MIN,
sysctl_tp_timer, "LU", "Persist timer min (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "persist_max",
CTLTYPE_ULONG | CTLFLAG_RD, sc, A_TP_PERS_MAX,
sysctl_tp_timer, "LU", "Persist timer max (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "keepalive_idle",
CTLTYPE_ULONG | CTLFLAG_RD, sc, A_TP_KEEP_IDLE,
sysctl_tp_timer, "LU", "Keepidle idle timer (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "keepalive_intvl",
CTLTYPE_ULONG | CTLFLAG_RD, sc, A_TP_KEEP_INTVL,
sysctl_tp_timer, "LU", "Keepidle interval (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "initial_srtt",
CTLTYPE_ULONG | CTLFLAG_RD, sc, A_TP_INIT_SRTT,
sysctl_tp_timer, "LU", "Initial SRTT (us)");
SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "finwait2_timer",
CTLTYPE_ULONG | CTLFLAG_RD, sc, A_TP_FINWAIT2_TIMER,
sysctl_tp_timer, "LU", "FINWAIT2 timer (us)");
}
#endif
}
@ -7388,6 +7439,90 @@ sysctl_wcwr_stats(SYSCTL_HANDLER_ARGS)
}
#endif
static void
unit_conv(char *buf, size_t len, u_int val, u_int factor)
{
u_int rem = val % factor;
if (rem == 0)
snprintf(buf, len, "%u", val / factor);
else {
while (rem % 10 == 0)
rem /= 10;
snprintf(buf, len, "%u.%u", val / factor, rem);
}
}
static int
sysctl_tp_tick(SYSCTL_HANDLER_ARGS)
{
struct adapter *sc = arg1;
char buf[16];
u_int res, re;
u_int cclk_ps = 1000000000 / sc->params.vpd.cclk;
res = t4_read_reg(sc, A_TP_TIMER_RESOLUTION);
switch (arg2) {
case 0:
/* timer_tick */
re = G_TIMERRESOLUTION(res);
break;
case 1:
/* TCP timestamp tick */
re = G_TIMESTAMPRESOLUTION(res);
break;
case 2:
/* DACK tick */
re = G_DELAYEDACKRESOLUTION(res);
break;
default:
return (EDOOFUS);
}
unit_conv(buf, sizeof(buf), (cclk_ps << re), 1000000);
return (sysctl_handle_string(oidp, buf, sizeof(buf), req));
}
static int
sysctl_tp_dack_timer(SYSCTL_HANDLER_ARGS)
{
struct adapter *sc = arg1;
u_int res, dack_re, v;
u_int cclk_ps = 1000000000 / sc->params.vpd.cclk;
res = t4_read_reg(sc, A_TP_TIMER_RESOLUTION);
dack_re = G_DELAYEDACKRESOLUTION(res);
v = ((cclk_ps << dack_re) / 1000000) * t4_read_reg(sc, A_TP_DACK_TIMER);
return (sysctl_handle_int(oidp, &v, 0, req));
}
static int
sysctl_tp_timer(SYSCTL_HANDLER_ARGS)
{
struct adapter *sc = arg1;
int reg = arg2;
u_int tre;
u_long tp_tick_us, v;
u_int cclk_ps = 1000000000 / sc->params.vpd.cclk;
MPASS(reg == A_TP_RXT_MIN || reg == A_TP_RXT_MAX ||
reg == A_TP_PERS_MIN || reg == A_TP_PERS_MAX ||
reg == A_TP_KEEP_IDLE || A_TP_KEEP_INTVL || reg == A_TP_INIT_SRTT ||
reg == A_TP_FINWAIT2_TIMER);
tre = G_TIMERRESOLUTION(t4_read_reg(sc, A_TP_TIMER_RESOLUTION));
tp_tick_us = (cclk_ps << tre) / 1000000;
if (reg == A_TP_INIT_SRTT)
v = tp_tick_us * G_INITSRTT(t4_read_reg(sc, reg));
else
v = tp_tick_us * t4_read_reg(sc, reg);
return (sysctl_handle_long(oidp, &v, 0, req));
}
static uint32_t
fconf_iconf_to_mode(uint32_t fconf, uint32_t iconf)
{