mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/*-
|
|
* 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) {
|
|
error = EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
tdev = TOEDEV(ifp);
|
|
if (tdev == NULL) {
|
|
error = EPERM;
|
|
goto fail;
|
|
}
|
|
|
|
if (tdev->tod_can_offload(tdev, so) == 0) {
|
|
error = EPERM;
|
|
goto fail;
|
|
}
|
|
|
|
return (tdev->tod_connect(tdev, so, rt, nam));
|
|
fail:
|
|
RTFREE(rt);
|
|
return (error);
|
|
}
|