From 2b3fe33c07b17b6bbc6515f73aef5efac89fd542 Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Mon, 18 Mar 2013 23:56:48 +0100 Subject: Implement hello and IHU sending and receiving --- src/babel.h | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 src/babel.h (limited to 'src/babel.h') diff --git a/src/babel.h b/src/babel.h new file mode 100644 index 0000000..7ad5450 --- /dev/null +++ b/src/babel.h @@ -0,0 +1,86 @@ +/* + Copyright (c) 2013, Matthias Schiffer + 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 THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 _GMRF_PROTO_BABEL_BABEL_H_ +#define _GMRF_PROTO_BABEL_BABEL_H_ + +#include "types.h" + +#define GP_BABEL_PACKET_MAX 1000 + +#define GP_BABEL_HELLO_INTERVAL 400 +#define GP_BABEL_IHU_INTERVAL (3*GP_BABEL_HELLO_INTERVAL) + +#define GP_BABEL_HELLO_TIMEOUT(interval) (16*(interval)) +#define GP_BABEL_IHU_TIMEOUT(interval) ((interval)*7/2) + +struct gmrf_context { + gp_babel_node_id_t self; + + gp_babel_iface_t *interfaces; + gp_babel_neigh_t *neighbours; +}; + +struct gp_babel_iface { + gp_babel_iface_t *next; + + gmrf_iface_t *gmrf_iface; + + uint16_t seqno; + + gp_babel_neigh_t *neighbours; +}; + +struct gp_babel_neigh { + gp_babel_neigh_t *next; + + unsigned ref; + + gp_babel_iface_t *iface; + gmrf_addr_t addr; + + uint16_t hello_log; + uint16_t hello_interval; + uint16_t last_seqno; + gmrf_time_t last_hello; + + uint16_t ihu_interval; + gmrf_time_t last_ihu; + + uint16_t txcost; +}; + +static inline gp_babel_iface_t* gp_babel_get_iface(gmrf_context_t *ctx, gmrf_iface_t *gmrf_iface) { + gp_babel_iface_t *iface; + for (iface = ctx->interfaces; iface; iface = iface->next) { + if (iface->gmrf_iface == gmrf_iface) + return iface; + } + + return NULL; +} + +#endif /* _GMRF_PROTO_BABEL_BABEL_H_ */ -- cgit v1.2.3