Author: np
Date: Sat Jun 4 23:36:19 2011
New Revision: 222703
URL: http://svn.freebsd.org/changeset/base/222703
Log:
Cause backpressure (instead of dropping frames) on congestion.
MFC after: 3 days
Modified:
head/sys/dev/cxgbe/t4_main.c
Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c Sat Jun 4 23:31:41 2011
(r222702)
+++ head/sys/dev/cxgbe/t4_main.c Sat Jun 4 23:36:19 2011
(r222703)
@@ -492,6 +492,8 @@ t4_attach(device_t dev)
V_RXTSHIFTMAXR2(15) | V_PERSHIFTBACKOFFMAX(8) | V_PERSHIFTMAX(8) |
V_KEEPALIVEMAXR1(4) | V_KEEPALIVEMAXR2(9));
t4_write_reg(sc, A_ULP_RX_TDDP_PSZ, V_HPZ0(PAGE_SHIFT - 12));
+ t4_set_reg_field(sc, A_TP_PARA_REG3, F_TUNNELCNGDROP0 |
+ F_TUNNELCNGDROP1 | F_TUNNELCNGDROP2 | F_TUNNELCNGDROP3, 0);
setup_memwin(sc);
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