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batman-adv: convert batman iv algorithm to use dynamic infrastructure

Browse source 
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Marek Lindner 2011-11-28 21:31:55 +08:00
commit 01c4224b51
7 changed files with 129 additions and 129 deletions
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179
net/batman-adv/bat_iv_ogm.c
View file

@ -20,7 +20,6 @@
*/
#include "main.h"
#include "bat_ogm.h"
#include "translation-table.h"
#include "ring_buffer.h"
#include "originator.h"
@ -31,7 +30,7 @@
#include "send.h"
#include "bat_algo.h"
void bat_ogm_init(struct hard_iface *hard_iface)
static void bat_iv_ogm_init(struct hard_iface *hard_iface)
{
struct batman_ogm_packet *batman_ogm_packet;
@ -48,7 +47,7 @@ void bat_ogm_init(struct hard_iface *hard_iface)
batman_ogm_packet->ttvn = 0;
}
void bat_ogm_init_primary(struct hard_iface *hard_iface)
static void bat_iv_ogm_init_primary(struct hard_iface *hard_iface)
{
struct batman_ogm_packet *batman_ogm_packet;
@ -57,7 +56,7 @@ void bat_ogm_init_primary(struct hard_iface *hard_iface)
batman_ogm_packet->header.ttl = TTL;
}
void bat_ogm_update_mac(struct hard_iface *hard_iface)
static void bat_iv_ogm_update_mac(struct hard_iface *hard_iface)
{
struct batman_ogm_packet *batman_ogm_packet;
@ -69,7 +68,7 @@ void bat_ogm_update_mac(struct hard_iface *hard_iface)
}
/* when do we schedule our own ogm to be sent */
static unsigned long bat_ogm_emit_send_time(const struct bat_priv *bat_priv)
static unsigned long bat_iv_ogm_emit_send_time(const struct bat_priv *bat_priv)
{
return jiffies + msecs_to_jiffies(
atomic_read(&bat_priv->orig_interval) -
@ -77,7 +76,7 @@ static unsigned long bat_ogm_emit_send_time(const struct bat_priv *bat_priv)
}
/* when do we schedule a ogm packet to be sent */
static unsigned long bat_ogm_fwd_send_time(void)
static unsigned long bat_iv_ogm_fwd_send_time(void)
{
return jiffies + msecs_to_jiffies(random32() % (JITTER/2));
}
@ -90,8 +89,8 @@ static uint8_t hop_penalty(uint8_t tq, const struct bat_priv *bat_priv)
}
/* is there another aggregated packet here? */
static int bat_ogm_aggr_packet(int buff_pos, int packet_len,
int tt_num_changes)
static int bat_iv_ogm_aggr_packet(int buff_pos, int packet_len,
int tt_num_changes)
{
int next_buff_pos = buff_pos + BATMAN_OGM_LEN + tt_len(tt_num_changes);
@ -100,8 +99,8 @@ static int bat_ogm_aggr_packet(int buff_pos, int packet_len,
}
/* send a batman ogm to a given interface */
static void bat_ogm_send_to_if(struct forw_packet *forw_packet,
struct hard_iface *hard_iface)
static void bat_iv_ogm_send_to_if(struct forw_packet *forw_packet,
struct hard_iface *hard_iface)
{
struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
char *fwd_str;
@ -118,8 +117,8 @@ static void bat_ogm_send_to_if(struct forw_packet *forw_packet,
batman_ogm_packet = (struct batman_ogm_packet *)forw_packet->skb->data;
/* adjust all flags and log packets */
while (bat_ogm_aggr_packet(buff_pos, forw_packet->packet_len,
batman_ogm_packet->tt_num_changes)) {
while (bat_iv_ogm_aggr_packet(buff_pos, forw_packet->packet_len,
batman_ogm_packet->tt_num_changes)) {
/* we might have aggregated direct link packets with an
* ordinary base packet */
@ -158,7 +157,7 @@ static void bat_ogm_send_to_if(struct forw_packet *forw_packet,
}
/* send a batman ogm packet */
void bat_ogm_emit(struct forw_packet *forw_packet)
static void bat_iv_ogm_emit(struct forw_packet *forw_packet)
{
struct hard_iface *hard_iface;
struct net_device *soft_iface;
@ -217,7 +216,7 @@ void bat_ogm_emit(struct forw_packet *forw_packet)
if (hard_iface->soft_iface != soft_iface)
continue;
bat_ogm_send_to_if(forw_packet, hard_iface);
bat_iv_ogm_send_to_if(forw_packet, hard_iface);
}
rcu_read_unlock();
@ -227,13 +226,13 @@ out:
}
/* return true if new_packet can be aggregated with forw_packet */
static bool bat_ogm_can_aggregate(const struct batman_ogm_packet
static bool bat_iv_ogm_can_aggregate(const struct batman_ogm_packet
*new_batman_ogm_packet,
struct bat_priv *bat_priv,
int packet_len, unsigned long send_time,
bool directlink,
const struct hard_iface *if_incoming,
const struct forw_packet *forw_packet)
struct bat_priv *bat_priv,
int packet_len, unsigned long send_time,
bool directlink,
const struct hard_iface *if_incoming,
const struct forw_packet *forw_packet)
{
struct batman_ogm_packet *batman_ogm_packet;
int aggregated_bytes = forw_packet->packet_len + packet_len;
@ -307,11 +306,11 @@ out:
}
/* create a new aggregated packet and add this packet to it */
static void bat_ogm_aggregate_new(const unsigned char *packet_buff,
int packet_len, unsigned long send_time,
bool direct_link,
struct hard_iface *if_incoming,
int own_packet)
static void bat_iv_ogm_aggregate_new(const unsigned char *packet_buff,
int packet_len, unsigned long send_time,
bool direct_link,
struct hard_iface *if_incoming,
int own_packet)
{
struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct forw_packet *forw_packet_aggr;
@ -386,9 +385,9 @@ out:
}
/* aggregate a new packet into the existing ogm packet */
static void bat_ogm_aggregate(struct forw_packet *forw_packet_aggr,
const unsigned char *packet_buff,
int packet_len, bool direct_link)
static void bat_iv_ogm_aggregate(struct forw_packet *forw_packet_aggr,
const unsigned char *packet_buff,
int packet_len, bool direct_link)
{
unsigned char *skb_buff;
@ -403,10 +402,10 @@ static void bat_ogm_aggregate(struct forw_packet *forw_packet_aggr,
(1 << forw_packet_aggr->num_packets);
}
static void bat_ogm_queue_add(struct bat_priv *bat_priv,
unsigned char *packet_buff,
int packet_len, struct hard_iface *if_incoming,
int own_packet, unsigned long send_time)
static void bat_iv_ogm_queue_add(struct bat_priv *bat_priv,
unsigned char *packet_buff,
int packet_len, struct hard_iface *if_incoming,
int own_packet, unsigned long send_time)
{
/**
* _aggr -> pointer to the packet we want to aggregate with
@ -426,11 +425,11 @@ static void bat_ogm_queue_add(struct bat_priv *bat_priv,
if ((atomic_read(&bat_priv->aggregated_ogms)) && (!own_packet)) {
hlist_for_each_entry(forw_packet_pos, tmp_node,
&bat_priv->forw_bat_list, list) {
if (bat_ogm_can_aggregate(batman_ogm_packet,
bat_priv, packet_len,
send_time, direct_link,
if_incoming,
forw_packet_pos)) {
if (bat_iv_ogm_can_aggregate(batman_ogm_packet,
bat_priv, packet_len,
send_time, direct_link,
if_incoming,
forw_packet_pos)) {
forw_packet_aggr = forw_packet_pos;
break;
}
@ -452,20 +451,20 @@ static void bat_ogm_queue_add(struct bat_priv *bat_priv,
(atomic_read(&bat_priv->aggregated_ogms)))
send_time += msecs_to_jiffies(MAX_AGGREGATION_MS);
bat_ogm_aggregate_new(packet_buff, packet_len,
send_time, direct_link,
if_incoming, own_packet);
bat_iv_ogm_aggregate_new(packet_buff, packet_len,
send_time, direct_link,
if_incoming, own_packet);
} else {
bat_ogm_aggregate(forw_packet_aggr, packet_buff, packet_len,
direct_link);
bat_iv_ogm_aggregate(forw_packet_aggr, packet_buff,
packet_len, direct_link);
spin_unlock_bh(&bat_priv->forw_bat_list_lock);
}
}
static void bat_ogm_forward(struct orig_node *orig_node,
const struct ethhdr *ethhdr,
struct batman_ogm_packet *batman_ogm_packet,
int directlink, struct hard_iface *if_incoming)
static void bat_iv_ogm_forward(struct orig_node *orig_node,
const struct ethhdr *ethhdr,
struct batman_ogm_packet *batman_ogm_packet,
int directlink, struct hard_iface *if_incoming)
{
struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct neigh_node *router;
@ -524,12 +523,13 @@ static void bat_ogm_forward(struct orig_node *orig_node,
else
batman_ogm_packet->flags &= ~DIRECTLINK;
bat_ogm_queue_add(bat_priv, (unsigned char *)batman_ogm_packet,
BATMAN_OGM_LEN + tt_len(tt_num_changes),
if_incoming, 0, bat_ogm_fwd_send_time());
bat_iv_ogm_queue_add(bat_priv, (unsigned char *)batman_ogm_packet,
BATMAN_OGM_LEN + tt_len(tt_num_changes),
if_incoming, 0, bat_iv_ogm_fwd_send_time());
}
void bat_ogm_schedule(struct hard_iface *hard_iface, int tt_num_changes)
static void bat_iv_ogm_schedule(struct hard_iface *hard_iface,
int tt_num_changes)
{
struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
struct batman_ogm_packet *batman_ogm_packet;
@ -566,21 +566,22 @@ void bat_ogm_schedule(struct hard_iface *hard_iface, int tt_num_changes)
atomic_inc(&hard_iface->seqno);
slide_own_bcast_window(hard_iface);
bat_ogm_queue_add(bat_priv, hard_iface->packet_buff,
hard_iface->packet_len, hard_iface, 1,
bat_ogm_emit_send_time(bat_priv));
bat_iv_ogm_queue_add(bat_priv, hard_iface->packet_buff,
hard_iface->packet_len, hard_iface, 1,
bat_iv_ogm_emit_send_time(bat_priv));
if (primary_if)
hardif_free_ref(primary_if);
}
static void bat_ogm_orig_update(struct bat_priv *bat_priv,
struct orig_node *orig_node,
const struct ethhdr *ethhdr,
const struct batman_ogm_packet
static void bat_iv_ogm_orig_update(struct bat_priv *bat_priv,
struct orig_node *orig_node,
const struct ethhdr *ethhdr,
const struct batman_ogm_packet
*batman_ogm_packet,
struct hard_iface *if_incoming,
const unsigned char *tt_buff, int is_duplicate)
struct hard_iface *if_incoming,
const unsigned char *tt_buff,
int is_duplicate)
{
struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL;
struct neigh_node *router = NULL;
@ -715,10 +716,10 @@ out:
neigh_node_free_ref(router);
}
static int bat_ogm_calc_tq(struct orig_node *orig_node,
struct orig_node *orig_neigh_node,
struct batman_ogm_packet *batman_ogm_packet,
struct hard_iface *if_incoming)
static int bat_iv_ogm_calc_tq(struct orig_node *orig_node,
struct orig_node *orig_neigh_node,
struct batman_ogm_packet *batman_ogm_packet,
struct hard_iface *if_incoming)
{
struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct neigh_node *neigh_node = NULL, *tmp_neigh_node;
@ -827,10 +828,10 @@ out:
* -1 the packet is old and has been received while the seqno window
* was protected. Caller should drop it.
*/
static int bat_ogm_update_seqnos(const struct ethhdr *ethhdr,
const struct batman_ogm_packet
static int bat_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
const struct batman_ogm_packet
*batman_ogm_packet,
const struct hard_iface *if_incoming)
const struct hard_iface *if_incoming)
{
struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct orig_node *orig_node;
@ -892,10 +893,10 @@ out:
return ret;
}
static void bat_ogm_process(const struct ethhdr *ethhdr,
struct batman_ogm_packet *batman_ogm_packet,
const unsigned char *tt_buff,
struct hard_iface *if_incoming)
static void bat_iv_ogm_process(const struct ethhdr *ethhdr,
struct batman_ogm_packet *batman_ogm_packet,
const unsigned char *tt_buff,
struct hard_iface *if_incoming)
{
struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct hard_iface *hard_iface;
@ -1033,8 +1034,8 @@ static void bat_ogm_process(const struct ethhdr *ethhdr,
if (!orig_node)
return;
is_duplicate = bat_ogm_update_seqnos(ethhdr, batman_ogm_packet,
if_incoming);
is_duplicate = bat_iv_ogm_update_seqnos(ethhdr, batman_ogm_packet,
if_incoming);
if (is_duplicate == -1) {
bat_dbg(DBG_BATMAN, bat_priv,
@ -1083,8 +1084,8 @@ static void bat_ogm_process(const struct ethhdr *ethhdr,
goto out_neigh;
}
is_bidirectional = bat_ogm_calc_tq(orig_node, orig_neigh_node,
batman_ogm_packet, if_incoming);
is_bidirectional = bat_iv_ogm_calc_tq(orig_node, orig_neigh_node,
batman_ogm_packet, if_incoming);
bonding_save_primary(orig_node, orig_neigh_node, batman_ogm_packet);
@ -1094,16 +1095,16 @@ static void bat_ogm_process(const struct ethhdr *ethhdr,
(!is_duplicate ||
((orig_node->last_real_seqno == batman_ogm_packet->seqno) &&
(orig_node->last_ttl - 3 <= batman_ogm_packet->header.ttl))))
bat_ogm_orig_update(bat_priv, orig_node, ethhdr,
batman_ogm_packet, if_incoming,
tt_buff, is_duplicate);
bat_iv_ogm_orig_update(bat_priv, orig_node, ethhdr,
batman_ogm_packet, if_incoming,
tt_buff, is_duplicate);
/* is single hop (direct) neighbor */
if (is_single_hop_neigh) {
/* mark direct link on incoming interface */
bat_ogm_forward(orig_node, ethhdr, batman_ogm_packet,
1, if_incoming);
bat_iv_ogm_forward(orig_node, ethhdr, batman_ogm_packet,
1, if_incoming);
bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: "
"rebroadcast neighbor packet with direct link flag\n");
@ -1125,7 +1126,8 @@ static void bat_ogm_process(const struct ethhdr *ethhdr,
bat_dbg(DBG_BATMAN, bat_priv,
"Forwarding packet: rebroadcast originator packet\n");
bat_ogm_forward(orig_node, ethhdr, batman_ogm_packet, 0, if_incoming);
bat_iv_ogm_forward(orig_node, ethhdr, batman_ogm_packet,
0, if_incoming);
out_neigh:
if ((orig_neigh_node) && (!is_single_hop_neigh))
@ -1141,7 +1143,8 @@ out:
orig_node_free_ref(orig_node);
}
void bat_ogm_receive(struct hard_iface *if_incoming, struct sk_buff *skb)
static void bat_iv_ogm_receive(struct hard_iface *if_incoming,
struct sk_buff *skb)
{
struct batman_ogm_packet *batman_ogm_packet;
struct ethhdr *ethhdr;
@ -1162,20 +1165,26 @@ void bat_ogm_receive(struct hard_iface *if_incoming, struct sk_buff *skb)
tt_buff = packet_buff + buff_pos + BATMAN_OGM_LEN;
bat_ogm_process(ethhdr, batman_ogm_packet,
tt_buff, if_incoming);
bat_iv_ogm_process(ethhdr, batman_ogm_packet,
tt_buff, if_incoming);
buff_pos += BATMAN_OGM_LEN +
tt_len(batman_ogm_packet->tt_num_changes);
batman_ogm_packet = (struct batman_ogm_packet *)
(packet_buff + buff_pos);
} while (bat_ogm_aggr_packet(buff_pos, packet_len,
batman_ogm_packet->tt_num_changes));
} while (bat_iv_ogm_aggr_packet(buff_pos, packet_len,
batman_ogm_packet->tt_num_changes));
}
static struct bat_algo_ops batman_iv __read_mostly = {
.name = "BATMAN IV",
.bat_ogm_init = bat_iv_ogm_init,
.bat_ogm_init_primary = bat_iv_ogm_init_primary,
.bat_ogm_update_mac = bat_iv_ogm_update_mac,
.bat_ogm_schedule = bat_iv_ogm_schedule,
.bat_ogm_emit = bat_iv_ogm_emit,
.bat_ogm_receive = bat_iv_ogm_receive,
};
int __init bat_iv_init(void)

34
net/batman-adv/bat_ogm.h
View file

@ -1,34 +0,0 @@
/*
* Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
*
* Marek Lindner, Simon Wunderlich
*
* 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
*
*/
#ifndef _NET_BATMAN_ADV_OGM_H_
#define _NET_BATMAN_ADV_OGM_H_
#include "main.h"
void bat_ogm_init(struct hard_iface *hard_iface);
void bat_ogm_init_primary(struct hard_iface *hard_iface);
void bat_ogm_update_mac(struct hard_iface *hard_iface);
void bat_ogm_schedule(struct hard_iface *hard_iface, int tt_num_changes);
void bat_ogm_emit(struct forw_packet *forw_packet);
void bat_ogm_receive(struct hard_iface *if_incoming, struct sk_buff *skb);
#endif /* _NET_BATMAN_ADV_OGM_H_ */

10
net/batman-adv/hard-interface.c
View file

@ -28,7 +28,6 @@
#include "bat_sysfs.h"
#include "originator.h"
#include "hash.h"
#include "bat_ogm.h"
#include <linux/if_arp.h>
@ -147,7 +146,7 @@ static void primary_if_select(struct bat_priv *bat_priv,
if (!new_hard_iface)
return;
bat_ogm_init_primary(new_hard_iface);
bat_priv->bat_algo_ops->bat_ogm_init_primary(new_hard_iface);
primary_if_update_addr(bat_priv);
}
@ -233,7 +232,7 @@ static void hardif_activate_interface(struct hard_iface *hard_iface)
bat_priv = netdev_priv(hard_iface->soft_iface);
bat_ogm_update_mac(hard_iface);
bat_priv->bat_algo_ops->bat_ogm_update_mac(hard_iface);
hard_iface->if_status = IF_TO_BE_ACTIVATED;
/**
@ -315,7 +314,7 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
hard_iface->soft_iface = soft_iface;
bat_priv = netdev_priv(hard_iface->soft_iface);
bat_ogm_init(hard_iface);
bat_priv->bat_algo_ops->bat_ogm_init(hard_iface);
if (!hard_iface->packet_buff) {
bat_err(hard_iface->soft_iface, "Can't add interface packet "
@ -535,9 +534,10 @@ static int hard_if_event(struct notifier_block *this,
goto hardif_put;
check_known_mac_addr(hard_iface->net_dev);
bat_ogm_update_mac(hard_iface);
bat_priv = netdev_priv(hard_iface->soft_iface);
bat_priv->bat_algo_ops->bat_ogm_update_mac(hard_iface);
primary_if = primary_if_get_selected(bat_priv);
if (!primary_if)
goto hardif_put;

12
net/batman-adv/main.c
View file

@ -206,6 +206,18 @@ int bat_algo_register(struct bat_algo_ops *bat_algo_ops)
goto out;
}
/* all algorithms must implement all ops (for now) */
if (!bat_algo_ops->bat_ogm_init ||
!bat_algo_ops->bat_ogm_init_primary ||
!bat_algo_ops->bat_ogm_update_mac ||
!bat_algo_ops->bat_ogm_schedule ||
!bat_algo_ops->bat_ogm_emit ||
!bat_algo_ops->bat_ogm_receive) {
pr_info("Routing algo '%s' does not implement required ops\n",
bat_algo_ops->name);
goto out;
}
INIT_HLIST_NODE(&bat_algo_ops->list);
hlist_add_head(&bat_algo_ops->list, &bat_algo_list);
ret = 0;

4
net/batman-adv/routing.c
View file

@ -29,7 +29,6 @@
#include "originator.h"
#include "vis.h"
#include "unicast.h"
#include "bat_ogm.h"
void slide_own_bcast_window(struct hard_iface *hard_iface)
{
@ -248,6 +247,7 @@ int window_protected(struct bat_priv *bat_priv, int32_t seq_num_diff,
int recv_bat_ogm_packet(struct sk_buff *skb, struct hard_iface *hard_iface)
{
struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
struct ethhdr *ethhdr;
/* drop packet if it has not necessary minimum size */
@ -272,7 +272,7 @@ int recv_bat_ogm_packet(struct sk_buff *skb, struct hard_iface *hard_iface)
if (skb_linearize(skb) < 0)
return NET_RX_DROP;
bat_ogm_receive(hard_iface, skb);
bat_priv->bat_algo_ops->bat_ogm_receive(hard_iface, skb);
kfree_skb(skb);
return NET_RX_SUCCESS;

5
net/batman-adv/send.c
View file

@ -28,7 +28,6 @@
#include "vis.h"
#include "gateway_common.h"
#include "originator.h"
#include "bat_ogm.h"
static void send_outstanding_bcast_packet(struct work_struct *work);
@ -168,7 +167,7 @@ void schedule_bat_ogm(struct hard_iface *hard_iface)
if (primary_if)
hardif_free_ref(primary_if);
bat_ogm_schedule(hard_iface, tt_num_changes);
bat_priv->bat_algo_ops->bat_ogm_schedule(hard_iface, tt_num_changes);
}
static void forw_packet_free(struct forw_packet *forw_packet)
@ -318,7 +317,7 @@ void send_outstanding_bat_ogm_packet(struct work_struct *work)
if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING)
goto out;
bat_ogm_emit(forw_packet);
bat_priv->bat_algo_ops->bat_ogm_emit(forw_packet);
/**
* we have to have at least one packet in the queue

14
net/batman-adv/types.h
View file

@ -348,6 +348,20 @@ struct softif_neigh {
struct bat_algo_ops {
struct hlist_node list;
char *name;
/* init OGM when hard-interface is enabled */
void (*bat_ogm_init)(struct hard_iface *hard_iface);
/* init primary OGM when primary interface is selected */
void (*bat_ogm_init_primary)(struct hard_iface *hard_iface);
/* init mac addresses of the OGM belonging to this hard-interface */
void (*bat_ogm_update_mac)(struct hard_iface *hard_iface);
/* prepare a new outgoing OGM for the send queue */
void (*bat_ogm_schedule)(struct hard_iface *hard_iface,
int tt_num_changes);
/* send scheduled OGM */
void (*bat_ogm_emit)(struct forw_packet *forw_packet);
/* receive incoming OGM */
void (*bat_ogm_receive)(struct hard_iface *if_incoming,
struct sk_buff *skb);
};
#endif /* _NET_BATMAN_ADV_TYPES_H_ */