freebsd-dev/sys/netinet/tcp_ofld.c

129 lines
2.8 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_ofld.h>
#include <netinet/toedev.h>
int
ofld_connect(struct socket *so, struct sockaddr *nam)
{
struct ifnet *ifp;
struct toedev *tdev;
struct rtentry *rt;
int error;
rt = rtalloc1(nam, 1, 0);
if (rt)
RT_UNLOCK(rt);
else
return (EHOSTUNREACH);
ifp = rt->rt_ifp;
tdev = TOEDEV(ifp);
if (tdev == NULL)
return (EINVAL);
if (tdev->tod_can_offload(tdev, so) == 0)
return (EINVAL);
if ((error = tdev->tod_connect(tdev, so, rt, nam)))
return (error);
return (0);
}
int
ofld_send(struct tcpcb *tp)
{
return (tp->t_tu->tu_send(tp));
}
int
ofld_rcvd(struct tcpcb *tp)
{
return (tp->t_tu->tu_rcvd(tp));
}
int
ofld_disconnect(struct tcpcb *tp)
{
return (tp->t_tu->tu_disconnect(tp));
}
int
ofld_abort(struct tcpcb *tp)
{
return (tp->t_tu->tu_abort(tp));
}
void
ofld_detach(struct tcpcb *tp)
{
tp->t_tu->tu_detach(tp);
}
void
ofld_listen_open(struct tcpcb *tp)
{
EVENTHANDLER_INVOKE(ofld_listen, OFLD_LISTEN_OPEN, tp);
}
void
ofld_listen_close(struct tcpcb *tp)
{
EVENTHANDLER_INVOKE(ofld_listen, OFLD_LISTEN_CLOSE, tp);
}