1 files changed, 100 insertions, 0 deletions
diff --git a/sys/netinet/tcp_offload.c b/sys/netinet/tcp_offload.c
new file mode 100644
index 0000000..b7eb159
--- /dev/null
+++ b/sys/netinet/tcp_offload.c
@@ -0,0 +1,100 @@
+/*-
+ * 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>
+
+
+int
+tcp_offload_connect(struct socket *so, struct sockaddr *nam)
+{
+	struct ifnet *ifp;
+	struct toedev *tdev;
+	struct rtentry *rt;
+	int error;
+
+	/*
+	 * Look up the route used for the connection to 
+	 * determine if it uses an interface capable of
+	 * offloading the connection.
+	 */
+	rt = rtalloc1(nam, 1 /*report*/, 0 /*ignflags*/);
+	if (rt) 
+		RT_UNLOCK(rt);
+	else 
+		return (EHOSTUNREACH);
+
+	ifp = rt->rt_ifp;
+	if ((ifp->if_capenable & IFCAP_TOE) == 0) {
+		printf("no toe capability on %p\n", ifp);
+		
+		error = EINVAL;
+		goto fail;
+	}
+	
+	tdev = TOEDEV(ifp);
+	if (tdev == NULL) {
+		printf("tdev not set\n");
+
+		error = EPERM;
+		goto fail;
+	}
+	
+	if (tdev->tod_can_offload(tdev, so) == 0) {
+		printf("not offloadable\n");
+
+		error = EPERM;
+		goto fail;
+	}
+	
+	return (tdev->tod_connect(tdev, so, rt, nam));
+fail:
+	RTFREE(rt);
+	return (error);
+}