Author: np
Date: Sat May 28 00:38:17 2016
New Revision: 300895
URL: https://svnweb.freebsd.org/changeset/base/300895
Log:
cxgbe/t4_tom: Exempt RDMA connections from a TCP sanity test for now, to
avoid panicking debug kernels.
t4_tom does not keep track of a connection once it switches to ULP mode
iWARP. If the connection falls out of ULP mode the driver/hardware seq#
etc. are out of sync. A better fix would be to figure out what the
current seq# are, update the driver's state, and perform all sanity
checks as usual.
Modified:
head/sys/dev/cxgbe/tom/t4_cpl_io.c
Modified: head/sys/dev/cxgbe/tom/t4_cpl_io.c
==============================================================================
--- head/sys/dev/cxgbe/tom/t4_cpl_io.c Sat May 28 00:22:39 2016
(r300894)
+++ head/sys/dev/cxgbe/tom/t4_cpl_io.c Sat May 28 00:38:17 2016
(r300895)
@@ -1417,7 +1417,11 @@ do_rx_data(struct sge_iq *iq, const stru
ddp_placed = be32toh(cpl->seq) - tp->rcv_nxt;
tp->rcv_nxt += len;
- KASSERT(tp->rcv_wnd >= len, ("%s: negative window size", __func__));
+ if (tp->rcv_wnd < len) {
+ KASSERT(toep->ulp_mode != ULP_MODE_RDMA,
+ ("%s: negative window size", __func__));
+ }
+
tp->rcv_wnd -= len;
tp->t_rcvtime = ticks;
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