----------------------------------------------------------------------
r14759:  kmacy | 2008-03-25 14:45:31 -0700

add utility functions for safely calling tcp_subr routines
----------------------------------------------------------------------
=== local/iwarp_crash_fix/sys/modules/cxgb/tom/Makefile
==================================================================
--- local/iwarp_crash_fix/sys/modules/cxgb/tom/Makefile	(revision 14758)
+++ local/iwarp_crash_fix/sys/modules/cxgb/tom/Makefile	(revision 14759)
@@ -5,7 +5,7 @@
 
 KMOD=	tom
 SRCS=   cxgb_tom.c cxgb_cpl_io.c cxgb_listen.c cxgb_tom_sysctl.c cxgb_cpl_socket.c
-SRCS+=  cxgb_ddp.c cxgb_vm.c cxgb_l2t.c
+SRCS+=  cxgb_ddp.c cxgb_vm.c cxgb_l2t.c cxgb_tcp_offload.c
 SRCS+=	opt_compat.h opt_inet.h opt_inet6.h opt_ipsec.h opt_mac.h 
 SRCS+=	opt_tcpdebug.h opt_ddb.h opt_sched.h opt_global.h opt_ktr.h
 SRCS+=	device_if.h bus_if.h pci_if.h
=== local/iwarp_crash_fix/sys/dev/cxgb/ulp/tom/cxgb_tcp_offload.c
==================================================================
--- local/iwarp_crash_fix/sys/dev/cxgb/ulp/tom/cxgb_tcp_offload.c	(revision 14758)
+++ local/iwarp_crash_fix/sys/dev/cxgb/ulp/tom/cxgb_tcp_offload.c	(revision 14759)
@@ -0,0 +1,96 @@
+/*-
+ * Copyright (c) 2007, Chelsio Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. Neither the name of the Chelsio Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/types.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <sys/sysctl.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+
+#include <net/if.h>
+#include <net/if_types.h>
+#include <net/if_var.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/in_pcb.h>
+#include <netinet/tcp.h>
+#include <netinet/tcp_var.h>
+#include <netinet/tcp_offload.h>
+#include <netinet/toedev.h>
+
+#include <dev/cxgb/ulp/tom/cxgb_tcp_offload.h>
+
+
+/*
+ * This file contains code as a short-term staging area before it is moved in 
+ * to sys/netinet/tcp_offload.c
+ */
+
+void
+tcp_offload_twstart(struct tcpcb *tp)
+{
+	INP_INFO_WLOCK(&tcbinfo);
+	inp_wlock(tp->t_inpcb);
+	tcp_twstart(tp);
+	INP_INFO_WUNLOCK(&tcbinfo);
+}
+
+struct tcpcb *
+tcp_offload_close(struct tcpcb *tp)
+{
+	
+	INP_INFO_WLOCK(&tcbinfo);
+	INP_LOCK(tp->t_inpcb);
+	tp = tcp_close(tp);
+	INP_INFO_WUNLOCK(&tcbinfo);
+	if (tp)
+		INP_UNLOCK(tp->t_inpcb);
+
+	return (tp);
+}
+
+struct tcpcb *
+tcp_offload_drop(struct tcpcb *tp, int error)
+{
+	
+	INP_INFO_WLOCK(&tcbinfo);
+	INP_LOCK(tp->t_inpcb);
+	tp = tcp_drop(tp, error);
+	INP_INFO_WUNLOCK(&tcbinfo);
+	if (tp)
+		INP_UNLOCK(tp->t_inpcb);
+
+	return (tp);
+}
=== local/iwarp_crash_fix/sys/dev/cxgb/ulp/tom/cxgb_tcp_offload.h
==================================================================
--- local/iwarp_crash_fix/sys/dev/cxgb/ulp/tom/cxgb_tcp_offload.h	(revision 14758)
+++ local/iwarp_crash_fix/sys/dev/cxgb/ulp/tom/cxgb_tcp_offload.h	(revision 14759)
@@ -0,0 +1,8 @@
+#ifndef CXGB_TCP_OFFLOAD_H_
+#define CXGB_TCP_OFFLOAD_H_
+
+void tcp_offload_twstart(struct tcpcb *tp);
+struct tcpcb *tcp_offload_close(struct tcpcb *tp);
+struct tcpcb *tcp_offload_drop(struct tcpcb *tp, int error);
+
+#endif /* CXGB_TCP_OFFLOAD_H_ */