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https://github.com/edk2-porting/linux-next.git
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3f69339068
Currently we schedule a broadcast packet like: 3x: [ [(re-)queue] --> for(hard-if): maybe-transmit ] The intention of queueing a broadcast packet multiple times is to increase robustness for wireless interfaces. However on interfaces which we only broadcast on once the queueing induces an unnecessary penalty. This patch restructures the queueing to be performed on a per interface basis: for(hard-if): - transmit - if wireless: [queue] --> transmit --> [requeue] --> transmit Next to the performance benefits on non-wireless interfaces this should also make it easier to apply alternative strategies for transmissions on wireless interfaces in the future (for instance sending via unicast transmissions on wireless interfaces, without queueing in batman-adv, if appropriate). Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
117 lines
4.3 KiB
C
117 lines
4.3 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_SEND_H_
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#define _NET_BATMAN_ADV_SEND_H_
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#include "main.h"
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#include <linux/compiler.h>
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#include <linux/skbuff.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#include <uapi/linux/batadv_packet.h>
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void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet,
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bool dropped);
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struct batadv_forw_packet *
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batadv_forw_packet_alloc(struct batadv_hard_iface *if_incoming,
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struct batadv_hard_iface *if_outgoing,
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atomic_t *queue_left,
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struct batadv_priv *bat_priv,
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struct sk_buff *skb);
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bool batadv_forw_packet_steal(struct batadv_forw_packet *packet, spinlock_t *l);
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void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv,
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struct batadv_forw_packet *forw_packet,
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unsigned long send_time);
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bool batadv_forw_packet_is_rebroadcast(struct batadv_forw_packet *forw_packet);
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int batadv_send_skb_to_orig(struct sk_buff *skb,
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struct batadv_orig_node *orig_node,
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struct batadv_hard_iface *recv_if);
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int batadv_send_skb_packet(struct sk_buff *skb,
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struct batadv_hard_iface *hard_iface,
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const u8 *dst_addr);
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int batadv_send_broadcast_skb(struct sk_buff *skb,
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struct batadv_hard_iface *hard_iface);
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int batadv_send_unicast_skb(struct sk_buff *skb,
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struct batadv_neigh_node *neigh_node);
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int batadv_forw_bcast_packet(struct batadv_priv *bat_priv,
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struct sk_buff *skb,
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unsigned long delay,
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bool own_packet);
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void batadv_send_bcast_packet(struct batadv_priv *bat_priv,
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struct sk_buff *skb,
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unsigned long delay,
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bool own_packet);
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void
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batadv_purge_outstanding_packets(struct batadv_priv *bat_priv,
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const struct batadv_hard_iface *hard_iface);
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bool batadv_send_skb_prepare_unicast_4addr(struct batadv_priv *bat_priv,
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struct sk_buff *skb,
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struct batadv_orig_node *orig_node,
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int packet_subtype);
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int batadv_send_skb_unicast(struct batadv_priv *bat_priv,
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struct sk_buff *skb, int packet_type,
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int packet_subtype,
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struct batadv_orig_node *orig_node,
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unsigned short vid);
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int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
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struct sk_buff *skb, int packet_type,
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int packet_subtype, u8 *dst_hint,
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unsigned short vid);
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int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
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unsigned short vid);
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/**
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* batadv_send_skb_via_tt() - send an skb via TT lookup
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* @bat_priv: the bat priv with all the soft interface information
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* @skb: the payload to send
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* @dst_hint: can be used to override the destination contained in the skb
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* @vid: the vid to be used to search the translation table
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*
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* Look up the recipient node for the destination address in the ethernet
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* header via the translation table. Wrap the given skb into a batman-adv
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* unicast header. Then send this frame to the according destination node.
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*
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* Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
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*/
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static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv,
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struct sk_buff *skb, u8 *dst_hint,
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unsigned short vid)
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{
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return batadv_send_skb_via_tt_generic(bat_priv, skb, BATADV_UNICAST, 0,
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dst_hint, vid);
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}
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/**
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* batadv_send_skb_via_tt_4addr() - send an skb via TT lookup
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* @bat_priv: the bat priv with all the soft interface information
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* @skb: the payload to send
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* @packet_subtype: the unicast 4addr packet subtype to use
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* @dst_hint: can be used to override the destination contained in the skb
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* @vid: the vid to be used to search the translation table
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*
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* Look up the recipient node for the destination address in the ethernet
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* header via the translation table. Wrap the given skb into a batman-adv
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* unicast-4addr header. Then send this frame to the according destination
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* node.
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*
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* Return: NET_XMIT_DROP in case of error or NET_XMIT_SUCCESS otherwise.
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*/
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static inline int batadv_send_skb_via_tt_4addr(struct batadv_priv *bat_priv,
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struct sk_buff *skb,
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int packet_subtype,
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u8 *dst_hint,
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unsigned short vid)
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{
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return batadv_send_skb_via_tt_generic(bat_priv, skb,
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BATADV_UNICAST_4ADDR,
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packet_subtype, dst_hint, vid);
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}
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#endif /* _NET_BATMAN_ADV_SEND_H_ */
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