dc7e38ac4d
from Mellanox Technologies. The current driver supports ethernet speeds up to and including 100 GBit/s. Infiniband support will be done later. The code added is not compiled by default, which will be done by a separate commit. Sponsored by: Mellanox Technologies MFC after: 2 weeks
84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/*-
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* Copyright (c) 2015 Mellanox Technologies. 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 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 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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#ifndef _TCP_TLRO_H_
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#define _TCP_TLRO_H_
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#define TLRO_MAX_HEADER 64 /* bytes */
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struct ip;
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struct ip6_hdr;
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struct tcphdr;
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struct tlro_mbuf_data {
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union {
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#ifdef INET
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struct ip *v4;
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#endif
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#ifdef INET6
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struct ip6_hdr *v6;
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#endif
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} ip;
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struct tcphdr *tcp;
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struct mbuf *head;
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struct mbuf **pprev;
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int last_tick;
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int sequence;
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int data_len;
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int data_off;
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int ip_hdrlen;
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int ip_len;
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uint32_t tcp_ts;
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uint32_t tcp_ts_reply;
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uint16_t tcp_len;
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uint8_t ip_version;
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uint8_t buf_length; /* in 32-bit words */
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uint64_t buf[TLRO_MAX_HEADER / 8];
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} __aligned(256);
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struct tlro_mbuf_ptr {
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struct tlro_mbuf_data *data;
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};
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/* NB: This is part of driver structs */
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struct tlro_ctrl {
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struct ifnet *ifp;
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struct tlro_mbuf_ptr *mbuf;
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uint64_t lro_queued;
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uint64_t lro_flushed;
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uint32_t max;
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uint32_t curr;
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int sequence;
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};
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int tcp_tlro_init(struct tlro_ctrl *, struct ifnet *, int);
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void tcp_tlro_free(struct tlro_ctrl *);
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void tcp_tlro_flush(struct tlro_ctrl *, int);
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void tcp_tlro_rx(struct tlro_ctrl *, struct mbuf *);
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#endif /* _TCP_TLRO_H_ */
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