tcp_lro.h

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2006, Myricom Inc.
    5  * Copyright (c) 2008, Intel Corporation.
    6  * Copyright (c) 2016 Mellanox Technologies.
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  * $FreeBSD$
   31  */
   32 
   33 #ifndef _TCP_LRO_H_
   34 #define _TCP_LRO_H_
   35 
   36 #include <sys/time.h>
   37 
   38 #ifndef TCP_LRO_ENTRIES
   39 /* Define default number of LRO entries per RX queue */
   40 #define TCP_LRO_ENTRIES 8
   41 #endif
   42 
   43 struct lro_entry {
   44         LIST_ENTRY(lro_entry)   next;
   45         LIST_ENTRY(lro_entry)   hash_next;
   46         struct mbuf             *m_head;
   47         struct mbuf             *m_tail;
   48         union {
   49                 struct ip       *ip4;
   50                 struct ip6_hdr  *ip6;
   51         } leip;
   52         union {
   53                 in_addr_t       s_ip4;
   54                 struct in6_addr s_ip6;
   55         } lesource;
   56         union {
   57                 in_addr_t       d_ip4;
   58                 struct in6_addr d_ip6;
   59         } ledest;
   60         uint16_t                source_port;
   61         uint16_t                dest_port;
   62         uint16_t                eh_type;        /* EthernetHeader type. */
   63         uint16_t                append_cnt;
   64         uint32_t                p_len;          /* IP header payload length. */
   65         uint32_t                ulp_csum;       /* TCP, etc. checksum. */
   66         uint32_t                next_seq;       /* tcp_seq */
   67         uint32_t                ack_seq;        /* tcp_seq */
   68         uint32_t                tsval;
   69         uint32_t                tsecr;
   70         uint16_t                window;
   71         uint16_t                timestamp;      /* flag, not a TCP hdr field. */
   72         struct timeval          mtime;
   73 };
   74 LIST_HEAD(lro_head, lro_entry);
   75 
   76 #define le_ip4                  leip.ip4
   77 #define le_ip6                  leip.ip6
   78 #define source_ip4              lesource.s_ip4
   79 #define dest_ip4                ledest.d_ip4
   80 #define source_ip6              lesource.s_ip6
   81 #define dest_ip6                ledest.d_ip6
   82 
   83 struct lro_mbuf_sort {
   84         uint64_t seq;
   85         struct mbuf *mb;
   86 };
   87 
   88 /* NB: This is part of driver structs. */
   89 struct lro_ctrl {
   90         struct ifnet    *ifp;
   91         struct lro_mbuf_sort *lro_mbuf_data;
   92         uint64_t        lro_queued;
   93         uint64_t        lro_flushed;
   94         uint64_t        lro_bad_csum;
   95         unsigned        lro_cnt;
   96         unsigned        lro_mbuf_count;
   97         unsigned        lro_mbuf_max;
   98         unsigned short  lro_ackcnt_lim;         /* max # of aggregated ACKs */
   99         unsigned        lro_length_lim;         /* max len of aggregated data */
  100 
  101         u_long          lro_hashsz;
  102         struct lro_head *lro_hash;
  103         struct lro_head lro_active;
  104         struct lro_head lro_free;
  105 };
  106 
  107 #define TCP_LRO_LENGTH_MAX      65535
  108 #define TCP_LRO_ACKCNT_MAX      65535           /* unlimited */
  109 
  110 int tcp_lro_init(struct lro_ctrl *);
  111 int tcp_lro_init_args(struct lro_ctrl *, struct ifnet *, unsigned, unsigned);
  112 void tcp_lro_free(struct lro_ctrl *);
  113 void tcp_lro_flush_inactive(struct lro_ctrl *, const struct timeval *);
  114 void tcp_lro_flush(struct lro_ctrl *, struct lro_entry *);
  115 void tcp_lro_flush_all(struct lro_ctrl *);
  116 int tcp_lro_rx(struct lro_ctrl *, struct mbuf *, uint32_t);
  117 void tcp_lro_queue_mbuf(struct lro_ctrl *, struct mbuf *);
  118 
  119 #define TCP_LRO_NO_ENTRIES      -2
  120 #define TCP_LRO_CANNOT          -1
  121 #define TCP_LRO_NOT_SUPPORTED   1
  122 
  123 #endif /* _TCP_LRO_H_ */

Cache object: dc6e7446ecffaae7ba5127d3557f85c4

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/netinet/tcp_lro.h

FreeBSD/Linux Kernel Cross Reference
sys/netinet/tcp_lro.h