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87b95082db
The Network Coding feature, introduced in 2013, is based on the master thesis "Inter-Flow Network Coding for Wireless Mesh Networks". It relies on the assumption that neighboring mesh nodes can reliably overhear each other's transmissions in promiscuous mode, allowing packets to be combined to reduce forwarding overhead. This assumption no longer holds for modern wireless mesh networks, which are heterogeneous and make overhearing increasingly unreliable. Factors such as multiple spatial streams, varying data rates, beamforming, and OFDMA all prevent nodes from consistently overhearing each other. The current implementation in batman-adv is not able to detect these conditions and would require a more complex layer beyond its neighbor discovery process to do so. In addition, the feature has been unmaintained for years and is discouraged for use. None of the current maintainers have the required test setup to verify its functionality, and known issues remain in its data structures (reference counting, RCU usage, and cleanup handling). Its continued presence also blocks necessary refactoring of the core originator infrastructure. Remove this obsolete and unmaintained feature. Signed-off-by: Sven Eckelmann <sven@narfation.org> Acked-by: Martin Hundebøll <martin@hundeboll.net> Acked-by: Marek Lindner <marek.lindner@mailbox.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
141 lines
3.9 KiB
C
141 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) B.A.T.M.A.N. contributors:
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*
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* Marek Lindner, Simon Wunderlich
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*/
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#ifndef _NET_BATMAN_ADV_LOG_H_
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#define _NET_BATMAN_ADV_LOG_H_
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#include "main.h"
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#include <linux/atomic.h>
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#include <linux/bitops.h>
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#include <linux/compiler.h>
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#include <linux/printk.h>
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#ifdef CONFIG_BATMAN_ADV_DEBUG
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int batadv_debug_log_setup(struct batadv_priv *bat_priv);
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void batadv_debug_log_cleanup(struct batadv_priv *bat_priv);
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#else
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static inline int batadv_debug_log_setup(struct batadv_priv *bat_priv)
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{
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return 0;
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}
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static inline void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
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{
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}
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#endif
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/**
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* enum batadv_dbg_level - available log levels
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*/
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enum batadv_dbg_level {
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/** @BATADV_DBG_BATMAN: OGM and TQ computations related messages */
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BATADV_DBG_BATMAN = BIT(0),
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/** @BATADV_DBG_ROUTES: route added / changed / deleted */
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BATADV_DBG_ROUTES = BIT(1),
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/** @BATADV_DBG_TT: translation table messages */
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BATADV_DBG_TT = BIT(2),
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/** @BATADV_DBG_BLA: bridge loop avoidance messages */
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BATADV_DBG_BLA = BIT(3),
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/** @BATADV_DBG_DAT: ARP snooping and DAT related messages */
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BATADV_DBG_DAT = BIT(4),
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/** @BATADV_DBG_MCAST: multicast related messages */
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BATADV_DBG_MCAST = BIT(6),
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/** @BATADV_DBG_TP_METER: throughput meter messages */
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BATADV_DBG_TP_METER = BIT(7),
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/** @BATADV_DBG_ALL: the union of all the above log levels */
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BATADV_DBG_ALL = 255,
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};
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#ifdef CONFIG_BATMAN_ADV_DEBUG
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int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
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__printf(2, 3);
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/**
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* _batadv_dbg() - Store debug output with(out) rate limiting
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* @type: type of debug message
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* @bat_priv: the bat priv with all the mesh interface information
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* @ratelimited: whether output should be rate limited
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* @fmt: format string
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* @arg: variable arguments
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*/
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#define _batadv_dbg(type, bat_priv, ratelimited, fmt, arg...) \
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do { \
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struct batadv_priv *__batpriv = (bat_priv); \
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if (atomic_read(&__batpriv->log_level) & (type) && \
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(!(ratelimited) || net_ratelimit())) \
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batadv_debug_log(__batpriv, fmt, ## arg); \
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} \
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while (0)
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#else /* !CONFIG_BATMAN_ADV_DEBUG */
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__printf(4, 5)
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static inline void _batadv_dbg(int type __always_unused,
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struct batadv_priv *bat_priv __always_unused,
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int ratelimited __always_unused,
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const char *fmt __always_unused, ...)
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{
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}
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#endif
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/**
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* batadv_dbg() - Store debug output without rate limiting
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* @type: type of debug message
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* @bat_priv: the bat priv with all the mesh interface information
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* @arg: format string and variable arguments
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*/
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#define batadv_dbg(type, bat_priv, arg...) \
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_batadv_dbg(type, bat_priv, 0, ## arg)
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/**
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* batadv_dbg_ratelimited() - Store debug output with rate limiting
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* @type: type of debug message
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* @bat_priv: the bat priv with all the mesh interface information
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* @arg: format string and variable arguments
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*/
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#define batadv_dbg_ratelimited(type, bat_priv, arg...) \
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_batadv_dbg(type, bat_priv, 1, ## arg)
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/**
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* batadv_info() - Store message in debug buffer and print it to kmsg buffer
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* @net_dev: the mesh interface net device
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* @fmt: format string
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* @arg: variable arguments
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*/
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#define batadv_info(net_dev, fmt, arg...) \
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do { \
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struct net_device *_netdev = (net_dev); \
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struct batadv_priv *_batpriv = netdev_priv(_netdev); \
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batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
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pr_info("%s: " fmt, _netdev->name, ## arg); \
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} while (0)
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/**
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* batadv_err() - Store error in debug buffer and print it to kmsg buffer
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* @net_dev: the mesh interface net device
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* @fmt: format string
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* @arg: variable arguments
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*/
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#define batadv_err(net_dev, fmt, arg...) \
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do { \
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struct net_device *_netdev = (net_dev); \
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struct batadv_priv *_batpriv = netdev_priv(_netdev); \
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batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
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pr_err("%s: " fmt, _netdev->name, ## arg); \
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} while (0)
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#endif /* _NET_BATMAN_ADV_LOG_H_ */
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