diff options
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/tcp.h')
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/tcp.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/tcp.h b/sys/compat/linuxkpi/common/include/linux/tcp.h new file mode 100644 index 000000000000..3e461d8e7075 --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/tcp.h @@ -0,0 +1,70 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2020-2021 The FreeBSD Foundation + * + * This software was developed by Björn Zeeb under sponsorship from + * the FreeBSD Foundation. + * + * 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. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + */ + +#ifndef _LINUXKPI_LINUX_TCP_H +#define _LINUXKPI_LINUX_TCP_H + +#include <sys/types.h> +#include <linux/skbuff.h> + +/* (u) unconfirmed structure field names; using FreeBSD's meanwhile. */ +struct tcphdr { + uint16_t source; /* (u) */ + uint16_t dest; /* (u) */ + uint32_t th_seq; /* (u) */ + uint32_t th_ack; /* (u) */ +#if BYTE_ORDER == LITTLE_ENDIAN + uint8_t th_x2:4, doff:4; +#elif BYTE_ORDER == BIG_ENDIAN + uint8_t doff:4, th_x2:4; +#endif + uint8_t th_flags; /* (u) */ + uint16_t th_win; /* (u) */ + uint16_t check; + uint16_t th_urg; /* (u) */ +}; + +static __inline struct tcphdr * +tcp_hdr(struct sk_buff *skb) +{ + + return (struct tcphdr *)skb_transport_header(skb); +} + +static __inline uint32_t +tcp_hdrlen(struct sk_buff *skb) +{ + struct tcphdr *th; + + th = tcp_hdr(skb); + return (4 * th->doff); +} + +#endif /* _LINUXKPI_LINUX_TCP_H */ |