OpenWrt was switched to use batctl as abstraction of the sysfs and netlink configuration interface. The only additional configuration option to finish this process is hop_penalty. It is required to defines the penalty which will be applied to an not available via batctl was hop_penalty originator message's tq-field on every hop.

Signed-off-by: Sven Eckelmann sven@narfation.org --- Makefile | 1 + README.rst | 15 +++++++ hop_penalty.c | 115 ++++++++++++++++++++++++++++++++++++++++++++++++++ man/batctl.8 | 4 ++ 4 files changed, 135 insertions(+) create mode 100644 hop_penalty.c

diff --git a/Makefile b/Makefile index 4d8b709..55105cc 100755 --- a/Makefile +++ b/Makefile @@ -63,6 +63,7 @@ $(eval $(call add_command,event,y)) $(eval $(call add_command,fragmentation,y)) $(eval $(call add_command,gateways,y)) $(eval $(call add_command,gw_mode,y)) +$(eval $(call add_command,hop_penalty,y)) $(eval $(call add_command,interface,y)) $(eval $(call add_command,isolation_mark,y)) $(eval $(call add_command,log,y)) diff --git a/README.rst b/README.rst index 4c0f544..e30b5b9 100644 --- a/README.rst +++ b/README.rst @@ -530,6 +530,21 @@ Usage:: batctl aggregation|ag [0|1]

+batctl hop_penalty +================== + +display or modify the hop_penalty (0-255) + +Usage:: + + batctl hop_penalty|hp [penalty] + +Example:: + + $ batctl penalty + 30 + + batctl isolation_mark =====================

diff --git a/hop_penalty.c b/hop_penalty.c new file mode 100644 index 0000000..58067bf --- /dev/null +++ b/hop_penalty.c @@ -0,0 +1,115 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2009-2019 B.A.T.M.A.N. contributors: + * + * Marek Lindner mareklindner@neomailbox.ch + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA + * + * License-Filename: LICENSES/preferred/GPL-2.0 + */ + +#include <errno.h> +#include <stddef.h> +#include <stdint.h> +#include <string.h> + +#include "main.h" +#include "sys.h" + +static struct hop_penalty_data { + uint8_t hop_penalty; +} hop_penalty; + +static int parse_hop_penalty(struct state *state, int argc, char *argv[]) +{ + struct settings_data *settings = state->cmd->arg; + struct hop_penalty_data *data = settings->data; + char *endptr; + + if (argc != 2) { + fprintf(stderr, "Error - incorrect number of arguments (expected 1)\n"); + return -EINVAL; + } + + data->hop_penalty = strtoul(argv[1], &endptr, 0); + if (!endptr || *endptr != '\0') { + fprintf(stderr, "Error - the supplied argument is invalid: %s\n", argv[1]); + return -EINVAL; + } + + return 0; +} + +static int print_hop_penalty(struct nl_msg *msg, void *arg) +{ + struct nlattr *attrs[BATADV_ATTR_MAX + 1]; + struct nlmsghdr *nlh = nlmsg_hdr(msg); + struct genlmsghdr *ghdr; + int *result = arg; + + if (!genlmsg_valid_hdr(nlh, 0)) + return NL_OK; + + ghdr = nlmsg_data(nlh); + + if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0), + genlmsg_len(ghdr), batadv_netlink_policy)) { + return NL_OK; + } + + if (!attrs[BATADV_ATTR_HOP_PENALTY]) + return NL_OK; + + printf("%u\n", nla_get_u8(attrs[BATADV_ATTR_HOP_PENALTY])); + + *result = 0; + return NL_STOP; +} + +static int get_hop_penalty(struct state *state) +{ + return sys_simple_nlquery(state, BATADV_CMD_GET_MESH, + NULL, print_hop_penalty); +} + +static int set_attrs_hop_penalty(struct nl_msg *msg, void *arg) +{ + struct state *state = arg; + struct settings_data *settings = state->cmd->arg; + struct hop_penalty_data *data = settings->data; + + nla_put_u8(msg, BATADV_ATTR_HOP_PENALTY, data->hop_penalty); + + return 0; +} + +static int set_hop_penalty(struct state *state) +{ + return sys_simple_nlquery(state, BATADV_CMD_SET_MESH, + set_attrs_hop_penalty, NULL); +} + +static struct settings_data batctl_settings_hop_penalty = { + .sysfs_name = "hop_penalty", + .data = &hop_penalty, + .parse = parse_hop_penalty, + .netlink_get = get_hop_penalty, + .netlink_set = set_hop_penalty, +}; + +COMMAND_NAMED(SUBCOMMAND, hop_penalty, "hp", handle_sys_setting, + COMMAND_FLAG_MESH_IFACE | COMMAND_FLAG_NETLINK, + &batctl_settings_hop_penalty, + "[penalty] \tdisplay or modify hop_penalty setting"); diff --git a/man/batctl.8 b/man/batctl.8 index ed8e71f..0fbf1dd 100644 --- a/man/batctl.8 +++ b/man/batctl.8 @@ -97,6 +97,10 @@ when parameter \fB-t\fP is specified. Parameter \fB-r\fP will do the same but If no parameter is given the current fragmentation mode setting is displayed. Otherwise the parameter is used to enable or disable fragmentation. .br +.IP "\fBhop_penalty\fP|\fBhp\fP [\fBpenalty\fP]" +If no parameter is given the current hop penalty setting is displayed. Otherwise the parameter is used to set the +hop penalty. The penalty is can be 0-255 (255 sets originator message's TQ to zero when forwarded by this hop). +.br .IP "\fBnetwork_coding\fP|\fBnc\fP [\fB0\fP|\fB1\fP]" If no parameter is given the current network coding mode setting is displayed. Otherwise the parameter is used to enable or disable network coding.