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Use global knob in the TP_PARA_REG3 register to disable congestion

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drops if the user has chosen this behaviour.

MFC after:	3 days
This commit is contained in:
Navdeep Parhar 2012-10-12 21:48:21 +00:00
parent ae09eb7337
commit 86e02bf207
2 changed files with 6 additions and 4 deletions
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4
sys/dev/cxgbe/t4_main.c
View File

@ -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,

6
sys/dev/cxgbe/t4_sge.c
View File

@ -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);