Author: np
Date: Fri Mar 11 23:24:04 2016
New Revision: 296689
URL: https://svnweb.freebsd.org/changeset/base/296689
Log:
cxgbe(4): sysctls to display the TOE's TCP timers.
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
...
Modified:
head/sys/dev/cxgbe/t4_main.c
Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c Fri Mar 11 23:18:06 2016
(r296688)
+++ head/sys/dev/cxgbe/t4_main.c Fri Mar 11 23:24:04 2016
(r296689)
@@ -482,6 +482,9 @@ static int sysctl_tx_rate(SYSCTL_HANDLER
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)
{
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