diff options
Diffstat (limited to 'sys/dev/mlx5/mlx5_en/tcp_tlro.h')
| -rw-r--r-- | sys/dev/mlx5/mlx5_en/tcp_tlro.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/sys/dev/mlx5/mlx5_en/tcp_tlro.h b/sys/dev/mlx5/mlx5_en/tcp_tlro.h new file mode 100644 index 0000000..40ebdf6 --- /dev/null +++ b/sys/dev/mlx5/mlx5_en/tcp_tlro.h @@ -0,0 +1,83 @@ +/*- + * Copyright (c) 2015 Mellanox Technologies. 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. 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 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 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. + * + * $FreeBSD$ + */ + +#ifndef _TCP_TLRO_H_ +#define _TCP_TLRO_H_ + +#define TLRO_MAX_HEADER 64 /* bytes */ + +struct ip; +struct ip6_hdr; +struct tcphdr; + +struct tlro_mbuf_data { + union { +#ifdef INET + struct ip *v4; +#endif +#ifdef INET6 + struct ip6_hdr *v6; +#endif + } ip; + struct tcphdr *tcp; + struct mbuf *head; + struct mbuf **pprev; + int last_tick; + int sequence; + int data_len; + int data_off; + int ip_hdrlen; + int ip_len; + uint32_t tcp_ts; + uint32_t tcp_ts_reply; + uint16_t tcp_len; + uint8_t ip_version; + uint8_t buf_length; /* in 32-bit words */ + uint64_t buf[TLRO_MAX_HEADER / 8]; +} __aligned(256); + +struct tlro_mbuf_ptr { + struct tlro_mbuf_data *data; +}; + +/* NB: This is part of driver structs */ +struct tlro_ctrl { + struct ifnet *ifp; + struct tlro_mbuf_ptr *mbuf; + uint64_t lro_queued; + uint64_t lro_flushed; + uint32_t max; + uint32_t curr; + int sequence; +}; + +int tcp_tlro_init(struct tlro_ctrl *, struct ifnet *, int); +void tcp_tlro_free(struct tlro_ctrl *); +void tcp_tlro_flush(struct tlro_ctrl *, int); +void tcp_tlro_rx(struct tlro_ctrl *, struct mbuf *); + +#endif /* _TCP_TLRO_H_ */ |
