01d74fe1ff
Notify the TOE driver when when an ICMP type 3 code 4 (Fragmentation needed and DF set) message is received for an offloaded connection. This gives the driver an opportunity to lower the path MTU for the connection and resume transmission, much like what the kernel does for the connections that it handles. Reviewed by: glebius@ Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D29755
56 lines
2.2 KiB
C
56 lines
2.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2012 Chelsio Communications, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef _NETINET_TCP_OFFLOAD_H_
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#define _NETINET_TCP_OFFLOAD_H_
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#ifndef _KERNEL
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#error "no user-serviceable parts inside"
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#endif
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#include <netinet/tcp.h>
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extern int registered_toedevs;
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int tcp_offload_connect(struct socket *, struct sockaddr *);
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void tcp_offload_listen_start(struct tcpcb *);
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void tcp_offload_listen_stop(struct tcpcb *);
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void tcp_offload_input(struct tcpcb *, struct mbuf *);
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int tcp_offload_output(struct tcpcb *);
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void tcp_offload_rcvd(struct tcpcb *);
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void tcp_offload_ctloutput(struct tcpcb *, int, int);
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void tcp_offload_tcp_info(struct tcpcb *, struct tcp_info *);
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int tcp_offload_alloc_tls_session(struct tcpcb *, struct ktls_session *, int);
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void tcp_offload_detach(struct tcpcb *);
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void tcp_offload_pmtu_update(struct tcpcb *, tcp_seq, int);
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#endif
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