Author: np
Date: Fri Oct 12 21:48:21 2012
New Revision: 241493
URL: http://svn.freebsd.org/changeset/base/241493
Log:
Use global knob in the TP_PARA_REG3 register to disable congestion
drops if the user has chosen this behaviour.
MFC after: 3 days
Modified:
head/sys/dev/cxgbe/t4_main.c
head/sys/dev/cxgbe/t4_sge.c
Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c Fri Oct 12 21:31:44 2012
(r241492)
+++ head/sys/dev/cxgbe/t4_main.c Fri Oct 12 21:48:21 2012
(r241493)
@@ -527,10 +527,6 @@ t4_attach(device_t dev)
t4_write_reg(sc, A_ULP_RX_TDDP_PSZ, V_HPZ0(0) | V_HPZ1(2) |
V_HPZ2(4) | V_HPZ3(6));
t4_set_reg_field(sc, A_ULP_RX_CTL, F_TDDPTAGTCB, F_TDDPTAGTCB);
- t4_set_reg_field(sc, A_TP_PARA_REG3, F_TUNNELCNGDROP0 |
- F_TUNNELCNGDROP1 | F_TUNNELCNGDROP2 | F_TUNNELCNGDROP3,
- F_TUNNELCNGDROP0 | F_TUNNELCNGDROP1 | F_TUNNELCNGDROP2 |
- F_TUNNELCNGDROP3);
t4_set_reg_field(sc, A_TP_PARA_REG5,
V_INDICATESIZE(M_INDICATESIZE) |
F_REARMDDPOFFSET | F_RESETDDPOFFSET,
Modified: head/sys/dev/cxgbe/t4_sge.c
==============================================================================
--- head/sys/dev/cxgbe/t4_sge.c Fri Oct 12 21:31:44 2012 (r241492)
+++ head/sys/dev/cxgbe/t4_sge.c Fri Oct 12 21:48:21 2012 (r241493)
@@ -319,6 +319,12 @@ t4_sge_init(struct adapter *sc)
t4_write_reg(sc, A_SGE_TIMER_VALUE_4_AND_5,
V_TIMERVALUE4(us_to_core_ticks(sc, intr_timer[4])) |
V_TIMERVALUE5(us_to_core_ticks(sc, intr_timer[5])));
+
+ if (cong_drop == 0) {
+ t4_set_reg_field(sc, A_TP_PARA_REG3, F_TUNNELCNGDROP0 |
+ F_TUNNELCNGDROP1 | F_TUNNELCNGDROP2 |
+ F_TUNNELCNGDROP3, 0);
+ }
}
v = t4_read_reg(sc, A_SGE_CONTROL);
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