Date: Sat, 28 May 2016 00:38:17 +0000 (UTC) From: Navdeep Parhar <np@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r300895 - head/sys/dev/cxgbe/tom Message-ID: <201605280038.u4S0cHTS032062@repo.freebsd.org>
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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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