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提交 0c070900 编写于 作者: D David S. Miller
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Merge branch 'batman-adv/next' of git://git.open-mesh.org/linux-merge

上级 f26cd41a 320f422f
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Documentation/networking/batman-adv.txt
浏览文件 @ 0c070900
[state: 17-04-2011]
[state: 21-08-2011]
BATMAN-ADV
----------
......@@ -68,9 +68,9 @@ All mesh wide settings can be found in batman's own interface
folder:
# ls /sys/class/net/bat0/mesh/
# aggregated_ogms gw_bandwidth hop_penalty
# aggregated_ogms fragmentation gw_sel_class vis_mode
# ap_isolation gw_bandwidth hop_penalty
# bonding gw_mode orig_interval
# fragmentation gw_sel_class vis_mode
There is a special folder for debugging information:
......
net/batman-adv/Makefile
浏览文件 @ 0c070900
......@@ -19,8 +19,8 @@
#
obj-$(CONFIG_BATMAN_ADV) += batman-adv.o
batman-adv-y += aggregation.o
batman-adv-y += bat_debugfs.o
batman-adv-y += bat_iv_ogm.o
batman-adv-y += bat_sysfs.o
batman-adv-y += bitarray.o
batman-adv-y += gateway_client.o
......
net/batman-adv/aggregation.c 已删除 100644 → 0
浏览文件 @ f26cd41a
/*
* 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
*
*/
#include "main.h"
#include "translation-table.h"
#include "aggregation.h"
#include "send.h"
#include "routing.h"
#include "hard-interface.h"
/* return true if new_packet can be aggregated with forw_packet */
static bool can_aggregate_with(const struct batman_packet *new_batman_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_packet *batman_packet =
(struct batman_packet *)forw_packet->skb->data;
int aggregated_bytes = forw_packet->packet_len + packet_len;
struct hard_iface *primary_if = NULL;
bool res = false;
/**
* we can aggregate the current packet to this aggregated packet
* if:
*
* - the send time is within our MAX_AGGREGATION_MS time
* - the resulting packet wont be bigger than
* MAX_AGGREGATION_BYTES
*/
if (time_before(send_time, forw_packet->send_time) &&
time_after_eq(send_time + msecs_to_jiffies(MAX_AGGREGATION_MS),
forw_packet->send_time) &&
(aggregated_bytes <= MAX_AGGREGATION_BYTES)) {
/**
* check aggregation compatibility
* -> direct link packets are broadcasted on
* their interface only
* -> aggregate packet if the current packet is
* a "global" packet as well as the base
* packet
*/
primary_if = primary_if_get_selected(bat_priv);
if (!primary_if)
goto out;
/* packets without direct link flag and high TTL
* are flooded through the net */
if ((!directlink) &&
(!(batman_packet->flags & DIRECTLINK)) &&
(batman_packet->ttl != 1) &&
/* own packets originating non-primary
* interfaces leave only that interface */
((!forw_packet->own) ||
(forw_packet->if_incoming == primary_if))) {
res = true;
goto out;
}
/* if the incoming packet is sent via this one
* interface only - we still can aggregate */
if ((directlink) &&
(new_batman_packet->ttl == 1) &&
(forw_packet->if_incoming == if_incoming) &&
/* packets from direct neighbors or
* own secondary interface packets
* (= secondary interface packets in general) */
(batman_packet->flags & DIRECTLINK ||
(forw_packet->own &&
forw_packet->if_incoming != primary_if))) {
res = true;
goto out;
}
}
out:
if (primary_if)
hardif_free_ref(primary_if);
return res;
}
/* create a new aggregated packet and add this packet to it */
static void new_aggregated_packet(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;
unsigned char *skb_buff;
if (!atomic_inc_not_zero(&if_incoming->refcount))
return;
/* own packet should always be scheduled */
if (!own_packet) {
if (!atomic_dec_not_zero(&bat_priv->batman_queue_left)) {
bat_dbg(DBG_BATMAN, bat_priv,
"batman packet queue full\n");
goto out;
}
}
forw_packet_aggr = kmalloc(sizeof(*forw_packet_aggr), GFP_ATOMIC);
if (!forw_packet_aggr) {
if (!own_packet)
atomic_inc(&bat_priv->batman_queue_left);
goto out;
}
if ((atomic_read(&bat_priv->aggregated_ogms)) &&
(packet_len < MAX_AGGREGATION_BYTES))
forw_packet_aggr->skb = dev_alloc_skb(MAX_AGGREGATION_BYTES +
sizeof(struct ethhdr));
else
forw_packet_aggr->skb = dev_alloc_skb(packet_len +
sizeof(struct ethhdr));
if (!forw_packet_aggr->skb) {
if (!own_packet)
atomic_inc(&bat_priv->batman_queue_left);
kfree(forw_packet_aggr);
goto out;
}
skb_reserve(forw_packet_aggr->skb, sizeof(struct ethhdr));
INIT_HLIST_NODE(&forw_packet_aggr->list);
skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
forw_packet_aggr->packet_len = packet_len;
memcpy(skb_buff, packet_buff, packet_len);
forw_packet_aggr->own = own_packet;
forw_packet_aggr->if_incoming = if_incoming;
forw_packet_aggr->num_packets = 0;
forw_packet_aggr->direct_link_flags = NO_FLAGS;
forw_packet_aggr->send_time = send_time;
/* save packet direct link flag status */
if (direct_link)
forw_packet_aggr->direct_link_flags |= 1;
/* add new packet to packet list */
spin_lock_bh(&bat_priv->forw_bat_list_lock);
hlist_add_head(&forw_packet_aggr->list, &bat_priv->forw_bat_list);
spin_unlock_bh(&bat_priv->forw_bat_list_lock);
/* start timer for this packet */
INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work,
send_outstanding_bat_packet);
queue_delayed_work(bat_event_workqueue,
&forw_packet_aggr->delayed_work,
send_time - jiffies);
return;
out:
hardif_free_ref(if_incoming);
}
/* aggregate a new packet into the existing aggregation */
static void aggregate(struct forw_packet *forw_packet_aggr,
const unsigned char *packet_buff, int packet_len,
bool direct_link)
{
unsigned char *skb_buff;
skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
memcpy(skb_buff, packet_buff, packet_len);
forw_packet_aggr->packet_len += packet_len;
forw_packet_aggr->num_packets++;
/* save packet direct link flag status */
if (direct_link)
forw_packet_aggr->direct_link_flags |=
(1 << forw_packet_aggr->num_packets);
}
void add_bat_packet_to_list(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
* _pos -> pointer to the position in the queue
*/
struct forw_packet *forw_packet_aggr = NULL, *forw_packet_pos = NULL;
struct hlist_node *tmp_node;
struct batman_packet *batman_packet =
(struct batman_packet *)packet_buff;
bool direct_link = batman_packet->flags & DIRECTLINK ? 1 : 0;
/* find position for the packet in the forward queue */
spin_lock_bh(&bat_priv->forw_bat_list_lock);
/* own packets are not to be aggregated */
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 (can_aggregate_with(batman_packet,
bat_priv,
packet_len,
send_time,
direct_link,
if_incoming,
forw_packet_pos)) {
forw_packet_aggr = forw_packet_pos;
break;
}
}
}
/* nothing to aggregate with - either aggregation disabled or no
* suitable aggregation packet found */
if (!forw_packet_aggr) {
/* the following section can run without the lock */
spin_unlock_bh(&bat_priv->forw_bat_list_lock);
/**
* if we could not aggregate this packet with one of the others
* we hold it back for a while, so that it might be aggregated
* later on
*/
if ((!own_packet) &&
(atomic_read(&bat_priv->aggregated_ogms)))
send_time += msecs_to_jiffies(MAX_AGGREGATION_MS);
new_aggregated_packet(packet_buff, packet_len,
send_time, direct_link,
if_incoming, own_packet);
} else {
aggregate(forw_packet_aggr,
packet_buff, packet_len,
direct_link);
spin_unlock_bh(&bat_priv->forw_bat_list_lock);
}
}
/* unpack the aggregated packets and process them one by one */
void receive_aggr_bat_packet(const struct ethhdr *ethhdr,
unsigned char *packet_buff, int packet_len,
struct hard_iface *if_incoming)
{
struct batman_packet *batman_packet;
int buff_pos = 0;
unsigned char *tt_buff;
batman_packet = (struct batman_packet *)packet_buff;
do {
/* network to host order for our 32bit seqno and the
orig_interval */
batman_packet->seqno = ntohl(batman_packet->seqno);
batman_packet->tt_crc = ntohs(batman_packet->tt_crc);
tt_buff = packet_buff + buff_pos + BAT_PACKET_LEN;
receive_bat_packet(ethhdr, batman_packet, tt_buff, if_incoming);
buff_pos += BAT_PACKET_LEN +
tt_len(batman_packet->tt_num_changes);
batman_packet = (struct batman_packet *)
(packet_buff + buff_pos);
} while (aggregated_packet(buff_pos, packet_len,
batman_packet->tt_num_changes));
}
net/batman-adv/bat_iv_ogm.c 0 → 100644
浏览文件 @ 0c070900
此差异已折叠。
net/batman-adv/aggregation.h → net/batman-adv/bat_ogm.h
浏览文件 @ 0c070900
......@@ -19,27 +19,17 @@
*
*/
#ifndef _NET_BATMAN_ADV_AGGREGATION_H_
#define _NET_BATMAN_ADV_AGGREGATION_H_
#ifndef _NET_BATMAN_ADV_OGM_H_
#define _NET_BATMAN_ADV_OGM_H_
#include "main.h"
/* is there another aggregated packet here? */
static inline int aggregated_packet(int buff_pos, int packet_len,
int tt_num_changes)
{
int next_buff_pos = buff_pos + BAT_PACKET_LEN + tt_len(tt_num_changes);
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(const struct ethhdr *ethhdr, unsigned char *packet_buff,
int packet_len, struct hard_iface *if_incoming);
return (next_buff_pos <= packet_len) &&
(next_buff_pos <= MAX_AGGREGATION_BYTES);
}
void add_bat_packet_to_list(struct bat_priv *bat_priv,
unsigned char *packet_buff, int packet_len,
struct hard_iface *if_incoming, int own_packet,
unsigned long send_time);
void receive_aggr_bat_packet(const struct ethhdr *ethhdr,
unsigned char *packet_buff, int packet_len,
struct hard_iface *if_incoming);
#endif /* _NET_BATMAN_ADV_AGGREGATION_H_ */
#endif /* _NET_BATMAN_ADV_OGM_H_ */
net/batman-adv/hard-interface.c
浏览文件 @ 0c070900
......@@ -28,6 +28,7 @@
#include "bat_sysfs.h"
#include "originator.h"
#include "hash.h"
#include "bat_ogm.h"
#include <linux/if_arp.h>
......@@ -131,7 +132,6 @@ static void primary_if_select(struct bat_priv *bat_priv,
struct hard_iface *new_hard_iface)
{
struct hard_iface *curr_hard_iface;
struct batman_packet *batman_packet;
ASSERT_RTNL();
......@@ -147,10 +147,7 @@ static void primary_if_select(struct bat_priv *bat_priv,
if (!new_hard_iface)
return;
batman_packet = (struct batman_packet *)(new_hard_iface->packet_buff);
batman_packet->flags = PRIMARIES_FIRST_HOP;
batman_packet->ttl = TTL;
bat_ogm_init_primary(new_hard_iface);
primary_if_update_addr(bat_priv);
}
......@@ -162,14 +159,6 @@ static bool hardif_is_iface_up(const struct hard_iface *hard_iface)
return false;
}
static void update_mac_addresses(struct hard_iface *hard_iface)
{
memcpy(((struct batman_packet *)(hard_iface->packet_buff))->orig,
hard_iface->net_dev->dev_addr, ETH_ALEN);
memcpy(((struct batman_packet *)(hard_iface->packet_buff))->prev_sender,
hard_iface->net_dev->dev_addr, ETH_ALEN);
}
static void check_known_mac_addr(const struct net_device *net_dev)
{
const struct hard_iface *hard_iface;
......@@ -244,7 +233,7 @@ static void hardif_activate_interface(struct hard_iface *hard_iface)
bat_priv = netdev_priv(hard_iface->soft_iface);
update_mac_addresses(hard_iface);
bat_ogm_update_mac(hard_iface);
hard_iface->if_status = IF_TO_BE_ACTIVATED;
/**
......@@ -283,7 +272,6 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
const char *iface_name)
{
struct bat_priv *bat_priv;
struct batman_packet *batman_packet;
struct net_device *soft_iface;
int ret;
......@@ -318,8 +306,8 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
hard_iface->soft_iface = soft_iface;
bat_priv = netdev_priv(hard_iface->soft_iface);
hard_iface->packet_len = BAT_PACKET_LEN;
hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
bat_ogm_init(hard_iface);
if (!hard_iface->packet_buff) {
bat_err(hard_iface->soft_iface, "Can't add interface packet "
......@@ -328,15 +316,6 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
goto err;
}
batman_packet = (struct batman_packet *)(hard_iface->packet_buff);
batman_packet->packet_type = BAT_PACKET;
batman_packet->version = COMPAT_VERSION;
batman_packet->flags = NO_FLAGS;
batman_packet->ttl = 2;
batman_packet->tq = TQ_MAX_VALUE;
batman_packet->tt_num_changes = 0;
batman_packet->ttvn = 0;
hard_iface->if_num = bat_priv->num_ifaces;
bat_priv->num_ifaces++;
hard_iface->if_status = IF_INACTIVE;
......@@ -381,7 +360,7 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
hard_iface->net_dev->name);
/* begin scheduling originator messages on that interface */
schedule_own_packet(hard_iface);
schedule_bat_ogm(hard_iface);
out:
return 0;
......@@ -455,11 +434,8 @@ static struct hard_iface *hardif_add_interface(struct net_device *net_dev)
dev_hold(net_dev);
hard_iface = kmalloc(sizeof(*hard_iface), GFP_ATOMIC);
if (!hard_iface) {
pr_err("Can't add interface (%s): out of memory\n",
net_dev->name);
if (!hard_iface)
goto release_dev;
}
ret = sysfs_add_hardif(&hard_iface->hardif_obj, net_dev);
if (ret)
......@@ -551,7 +527,7 @@ static int hard_if_event(struct notifier_block *this,
goto hardif_put;
check_known_mac_addr(hard_iface->net_dev);
update_mac_addresses(hard_iface);
bat_ogm_update_mac(hard_iface);
bat_priv = netdev_priv(hard_iface->soft_iface);
primary_if = primary_if_get_selected(bat_priv);
......@@ -580,7 +556,7 @@ static int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
struct net_device *orig_dev)
{
struct bat_priv *bat_priv;
struct batman_packet *batman_packet;
struct batman_ogm_packet *batman_ogm_packet;
struct hard_iface *hard_iface;
int ret;
......@@ -612,22 +588,22 @@ static int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
if (hard_iface->if_status != IF_ACTIVE)
goto err_free;
batman_packet = (struct batman_packet *)skb->data;
batman_ogm_packet = (struct batman_ogm_packet *)skb->data;
if (batman_packet->version != COMPAT_VERSION) {
if (batman_ogm_packet->version != COMPAT_VERSION) {
bat_dbg(DBG_BATMAN, bat_priv,
"Drop packet: incompatible batman version (%i)\n",
batman_packet->version);
batman_ogm_packet->version);
goto err_free;
}
/* all receive handlers return whether they received or reused
* the supplied skb. if not, we have to free the skb. */
switch (batman_packet->packet_type) {
switch (batman_ogm_packet->packet_type) {
/* batman originator packet */
case BAT_PACKET:
ret = recv_bat_packet(skb, hard_iface);
case BAT_OGM:
ret = recv_bat_ogm_packet(skb, hard_iface);
break;
/* batman icmp packet */
......
net/batman-adv/main.c
浏览文件 @ 0c070900
......@@ -117,8 +117,6 @@ int mesh_init(struct net_device *soft_iface)
goto end;
err:
pr_err("Unable to allocate memory for mesh information structures: "
"out of mem ?\n");
mesh_free(soft_iface);
return -1;
......
net/batman-adv/main.h
浏览文件 @ 0c070900
......@@ -28,7 +28,7 @@
#define DRIVER_DEVICE "batman-adv"
#ifndef SOURCE_VERSION
#define SOURCE_VERSION "2011.3.0"
#define SOURCE_VERSION "2011.4.0"
#endif
/* B.A.T.M.A.N. parameters */
......
net/batman-adv/originator.c
浏览文件 @ 0c070900
......@@ -336,8 +336,7 @@ static bool purge_orig_node(struct bat_priv *bat_priv,
} else {
if (purge_orig_neighbors(bat_priv, orig_node,
&best_neigh_node)) {
update_routes(bat_priv, orig_node,
best_neigh_node);
update_route(bat_priv, orig_node, best_neigh_node);
}
}
......@@ -493,10 +492,8 @@ static int orig_node_add_if(struct orig_node *orig_node, int max_if_num)
data_ptr = kmalloc(max_if_num * sizeof(unsigned long) * NUM_WORDS,
GFP_ATOMIC);
if (!data_ptr) {
pr_err("Can't resize orig: out of memory\n");
if (!data_ptr)
return -1;
}
memcpy(data_ptr, orig_node->bcast_own,
(max_if_num - 1) * sizeof(unsigned long) * NUM_WORDS);
......@@ -504,10 +501,8 @@ static int orig_node_add_if(struct orig_node *orig_node, int max_if_num)
orig_node->bcast_own = data_ptr;
data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
if (!data_ptr) {
pr_err("Can't resize orig: out of memory\n");
if (!data_ptr)
return -1;
}
memcpy(data_ptr, orig_node->bcast_own_sum,
(max_if_num - 1) * sizeof(uint8_t));
......@@ -562,10 +557,8 @@ static int orig_node_del_if(struct orig_node *orig_node,
chunk_size = sizeof(unsigned long) * NUM_WORDS;
data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC);
if (!data_ptr) {
pr_err("Can't resize orig: out of memory\n");
if (!data_ptr)
return -1;
}
/* copy first part */
memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size);
......@@ -583,10 +576,8 @@ static int orig_node_del_if(struct orig_node *orig_node,
goto free_own_sum;
data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
if (!data_ptr) {
pr_err("Can't resize orig: out of memory\n");
if (!data_ptr)
return -1;
}
memcpy(data_ptr, orig_node->bcast_own_sum,
del_if_num * sizeof(uint8_t));
......
net/batman-adv/packet.h
浏览文件 @ 0c070900
......@@ -25,7 +25,7 @@
#define ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */
enum bat_packettype {
BAT_PACKET = 0x01,
BAT_OGM = 0x01,
BAT_ICMP = 0x02,
BAT_UNICAST = 0x03,
BAT_BCAST = 0x04,
......@@ -90,7 +90,7 @@ enum tt_client_flags {
TT_CLIENT_PENDING = 1 << 10
};
struct batman_packet {
struct batman_ogm_packet {
uint8_t packet_type;
uint8_t version; /* batman version field */
uint8_t ttl;
......@@ -105,7 +105,7 @@ struct batman_packet {
uint16_t tt_crc;
} __packed;
#define BAT_PACKET_LEN sizeof(struct batman_packet)
#define BATMAN_OGM_LEN sizeof(struct batman_ogm_packet)
struct icmp_packet {
uint8_t packet_type;
......
net/batman-adv/routing.c
浏览文件 @ 0c070900
此差异已折叠。
net/batman-adv/routing.h
浏览文件 @ 0c070900
......@@ -23,11 +23,7 @@
#define _NET_BATMAN_ADV_ROUTING_H_
void slide_own_bcast_window(struct hard_iface *hard_iface);
void receive_bat_packet(const struct ethhdr *ethhdr,
struct batman_packet *batman_packet,
const unsigned char *tt_buff,
struct hard_iface *if_incoming);
void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,
void update_route(struct bat_priv *bat_priv, struct orig_node *orig_node,
struct neigh_node *neigh_node);
int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if);
int recv_icmp_packet(struct sk_buff *skb, struct hard_iface *recv_if);
......@@ -35,7 +31,7 @@ int recv_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if);
int recv_ucast_frag_packet(struct sk_buff *skb, struct hard_iface *recv_if);
int recv_bcast_packet(struct sk_buff *skb, struct hard_iface *recv_if);
int recv_vis_packet(struct sk_buff *skb, struct hard_iface *recv_if);
int recv_bat_packet(struct sk_buff *skb, struct hard_iface *recv_if);
int recv_bat_ogm_packet(struct sk_buff *skb, struct hard_iface *recv_if);
int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if);
int recv_roam_adv(struct sk_buff *skb, struct hard_iface *recv_if);
struct neigh_node *find_router(struct bat_priv *bat_priv,
......@@ -43,5 +39,12 @@ struct neigh_node *find_router(struct bat_priv *bat_priv,
const struct hard_iface *recv_if);
void bonding_candidate_del(struct orig_node *orig_node,
struct neigh_node *neigh_node);
void bonding_candidate_add(struct orig_node *orig_node,
struct neigh_node *neigh_node);
void bonding_save_primary(const struct orig_node *orig_node,
struct orig_node *orig_neigh_node,
const struct batman_ogm_packet *batman_ogm_packet);
int window_protected(struct bat_priv *bat_priv, int32_t seq_num_diff,
unsigned long *last_reset);
#endif /* _NET_BATMAN_ADV_ROUTING_H_ */
net/batman-adv/send.c
浏览文件 @ 0c070900
......@@ -26,33 +26,12 @@
#include "soft-interface.h"
#include "hard-interface.h"
#include "vis.h"
#include "aggregation.h"
#include "gateway_common.h"
#include "originator.h"
#include "bat_ogm.h"
static void send_outstanding_bcast_packet(struct work_struct *work);
/* apply hop penalty for a normal link */
static uint8_t hop_penalty(uint8_t tq, const struct bat_priv *bat_priv)
{
int hop_penalty = atomic_read(&bat_priv->hop_penalty);
return (tq * (TQ_MAX_VALUE - hop_penalty)) / (TQ_MAX_VALUE);
}
/* when do we schedule our own packet to be sent */
static unsigned long own_send_time(const struct bat_priv *bat_priv)
{
return jiffies + msecs_to_jiffies(
atomic_read(&bat_priv->orig_interval) -
JITTER + (random32() % 2*JITTER));
}
/* when do we schedule a forwarded packet to be sent */
static unsigned long forward_send_time(void)
{
return jiffies + msecs_to_jiffies(random32() % (JITTER/2));
}
/* send out an already prepared packet to the given address via the
* specified batman interface */
int send_skb_packet(struct sk_buff *skb, struct hard_iface *hard_iface,
......@@ -99,141 +78,17 @@ int send_skb_packet(struct sk_buff *skb, struct hard_iface *hard_iface,
return NET_XMIT_DROP;
}
/* Send a packet to a given interface */
static void send_packet_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;
uint8_t packet_num;
int16_t buff_pos;
struct batman_packet *batman_packet;
struct sk_buff *skb;
if (hard_iface->if_status != IF_ACTIVE)
return;
packet_num = 0;
buff_pos = 0;
batman_packet = (struct batman_packet *)forw_packet->skb->data;
/* adjust all flags and log packets */
while (aggregated_packet(buff_pos,
forw_packet->packet_len,
batman_packet->tt_num_changes)) {
/* we might have aggregated direct link packets with an
* ordinary base packet */
if ((forw_packet->direct_link_flags & (1 << packet_num)) &&
(forw_packet->if_incoming == hard_iface))
batman_packet->flags |= DIRECTLINK;
else
batman_packet->flags &= ~DIRECTLINK;
fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ?
"Sending own" :
"Forwarding"));
bat_dbg(DBG_BATMAN, bat_priv,
"%s %spacket (originator %pM, seqno %d, TQ %d, TTL %d,"
" IDF %s, ttvn %d) on interface %s [%pM]\n",
fwd_str, (packet_num > 0 ? "aggregated " : ""),
batman_packet->orig, ntohl(batman_packet->seqno),
batman_packet->tq, batman_packet->ttl,
(batman_packet->flags & DIRECTLINK ?
"on" : "off"),
batman_packet->ttvn, hard_iface->net_dev->name,
hard_iface->net_dev->dev_addr);
buff_pos += sizeof(*batman_packet) +
tt_len(batman_packet->tt_num_changes);
packet_num++;
batman_packet = (struct batman_packet *)
(forw_packet->skb->data + buff_pos);
}
/* create clone because function is called more than once */
skb = skb_clone(forw_packet->skb, GFP_ATOMIC);
if (skb)
send_skb_packet(skb, hard_iface, broadcast_addr);
}
/* send a batman packet */
static void send_packet(struct forw_packet *forw_packet)
{
struct hard_iface *hard_iface;
struct net_device *soft_iface;
struct bat_priv *bat_priv;
struct hard_iface *primary_if = NULL;
struct batman_packet *batman_packet =
(struct batman_packet *)(forw_packet->skb->data);
int directlink = (batman_packet->flags & DIRECTLINK ? 1 : 0);
if (!forw_packet->if_incoming) {
pr_err("Error - can't forward packet: incoming iface not "
"specified\n");
goto out;
}
soft_iface = forw_packet->if_incoming->soft_iface;
bat_priv = netdev_priv(soft_iface);
if (forw_packet->if_incoming->if_status != IF_ACTIVE)
goto out;
primary_if = primary_if_get_selected(bat_priv);
if (!primary_if)
goto out;
/* multihomed peer assumed */
/* non-primary OGMs are only broadcasted on their interface */
if ((directlink && (batman_packet->ttl == 1)) ||
(forw_packet->own && (forw_packet->if_incoming != primary_if))) {
/* FIXME: what about aggregated packets ? */
bat_dbg(DBG_BATMAN, bat_priv,
"%s packet (originator %pM, seqno %d, TTL %d) "
"on interface %s [%pM]\n",
(forw_packet->own ? "Sending own" : "Forwarding"),
batman_packet->orig, ntohl(batman_packet->seqno),
batman_packet->ttl,
forw_packet->if_incoming->net_dev->name,
forw_packet->if_incoming->net_dev->dev_addr);
/* skb is only used once and than forw_packet is free'd */
send_skb_packet(forw_packet->skb, forw_packet->if_incoming,
broadcast_addr);
forw_packet->skb = NULL;
goto out;
}
/* broadcast on every interface */
rcu_read_lock();
list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
if (hard_iface->soft_iface != soft_iface)
continue;
send_packet_to_if(forw_packet, hard_iface);
}
rcu_read_unlock();
out:
if (primary_if)
hardif_free_ref(primary_if);
}
static void realloc_packet_buffer(struct hard_iface *hard_iface,
int new_len)
{
unsigned char *new_buff;
struct batman_packet *batman_packet;
new_buff = kmalloc(new_len, GFP_ATOMIC);
/* keep old buffer if kmalloc should fail */
if (new_buff) {
memcpy(new_buff, hard_iface->packet_buff,
sizeof(*batman_packet));
BATMAN_OGM_LEN);
kfree(hard_iface->packet_buff);
hard_iface->packet_buff = new_buff;
......@@ -242,60 +97,48 @@ static void realloc_packet_buffer(struct hard_iface *hard_iface,
}
/* when calling this function (hard_iface == primary_if) has to be true */
static void prepare_packet_buffer(struct bat_priv *bat_priv,
static int prepare_packet_buffer(struct bat_priv *bat_priv,
struct hard_iface *hard_iface)
{
int new_len;
struct batman_packet *batman_packet;
new_len = BAT_PACKET_LEN +
new_len = BATMAN_OGM_LEN +
tt_len((uint8_t)atomic_read(&bat_priv->tt_local_changes));
/* if we have too many changes for one packet don't send any
* and wait for the tt table request which will be fragmented */
if (new_len > hard_iface->soft_iface->mtu)
new_len = BAT_PACKET_LEN;
new_len = BATMAN_OGM_LEN;
realloc_packet_buffer(hard_iface, new_len);
batman_packet = (struct batman_packet *)hard_iface->packet_buff;
atomic_set(&bat_priv->tt_crc, tt_local_crc(bat_priv));
/* reset the sending counter */
atomic_set(&bat_priv->tt_ogm_append_cnt, TT_OGM_APPEND_MAX);
batman_packet->tt_num_changes = tt_changes_fill_buffer(bat_priv,
hard_iface->packet_buff + BAT_PACKET_LEN,
hard_iface->packet_len - BAT_PACKET_LEN);
return tt_changes_fill_buffer(bat_priv,
hard_iface->packet_buff + BATMAN_OGM_LEN,
hard_iface->packet_len - BATMAN_OGM_LEN);
}
static void reset_packet_buffer(struct bat_priv *bat_priv,
static int reset_packet_buffer(struct bat_priv *bat_priv,
struct hard_iface *hard_iface)
{
struct batman_packet *batman_packet;
realloc_packet_buffer(hard_iface, BAT_PACKET_LEN);
batman_packet = (struct batman_packet *)hard_iface->packet_buff;
batman_packet->tt_num_changes = 0;
realloc_packet_buffer(hard_iface, BATMAN_OGM_LEN);
return 0;
}
void schedule_own_packet(struct hard_iface *hard_iface)
void schedule_bat_ogm(struct hard_iface *hard_iface)
{
struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
struct hard_iface *primary_if;
unsigned long send_time;
struct batman_packet *batman_packet;
int vis_server;
int tt_num_changes = -1;
if ((hard_iface->if_status == IF_NOT_IN_USE) ||
(hard_iface->if_status == IF_TO_BE_REMOVED))
return;
vis_server = atomic_read(&bat_priv->vis_mode);
primary_if = primary_if_get_selected(bat_priv);
/**
* the interface gets activated here to avoid race conditions between
* the moment of activating the interface in
......@@ -306,124 +149,26 @@ void schedule_own_packet(struct hard_iface *hard_iface)
if (hard_iface->if_status == IF_TO_BE_ACTIVATED)
hard_iface->if_status = IF_ACTIVE;
primary_if = primary_if_get_selected(bat_priv);
if (hard_iface == primary_if) {
/* if at least one change happened */
if (atomic_read(&bat_priv->tt_local_changes) > 0) {
tt_commit_changes(bat_priv);
prepare_packet_buffer(bat_priv, hard_iface);
tt_num_changes = prepare_packet_buffer(bat_priv,
hard_iface);
}
/* if the changes have been sent often enough */
if (!atomic_dec_not_zero(&bat_priv->tt_ogm_append_cnt))
reset_packet_buffer(bat_priv, hard_iface);
tt_num_changes = reset_packet_buffer(bat_priv,
hard_iface);
}
/**
* NOTE: packet_buff might just have been re-allocated in
* prepare_packet_buffer() or in reset_packet_buffer()
*/
batman_packet = (struct batman_packet *)hard_iface->packet_buff;
/* change sequence number to network order */
batman_packet->seqno =
htonl((uint32_t)atomic_read(&hard_iface->seqno));
batman_packet->ttvn = atomic_read(&bat_priv->ttvn);
batman_packet->tt_crc = htons((uint16_t)atomic_read(&bat_priv->tt_crc));
if (vis_server == VIS_TYPE_SERVER_SYNC)
batman_packet->flags |= VIS_SERVER;
else
batman_packet->flags &= ~VIS_SERVER;
if ((hard_iface == primary_if) &&
(atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER))
batman_packet->gw_flags =
(uint8_t)atomic_read(&bat_priv->gw_bandwidth);
else
batman_packet->gw_flags = NO_FLAGS;
atomic_inc(&hard_iface->seqno);
slide_own_bcast_window(hard_iface);
send_time = own_send_time(bat_priv);
add_bat_packet_to_list(bat_priv,
hard_iface->packet_buff,
hard_iface->packet_len,
hard_iface, 1, send_time);
if (primary_if)
hardif_free_ref(primary_if);
}
void schedule_forward_packet(struct orig_node *orig_node,
const struct ethhdr *ethhdr,
struct batman_packet *batman_packet,
int directlink,
struct hard_iface *if_incoming)
{
struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct neigh_node *router;
uint8_t in_tq, in_ttl, tq_avg = 0;
unsigned long send_time;
uint8_t tt_num_changes;
if (batman_packet->ttl <= 1) {
bat_dbg(DBG_BATMAN, bat_priv, "ttl exceeded\n");
return;
}
router = orig_node_get_router(orig_node);
in_tq = batman_packet->tq;
in_ttl = batman_packet->ttl;
tt_num_changes = batman_packet->tt_num_changes;
batman_packet->ttl--;
memcpy(batman_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
/* rebroadcast tq of our best ranking neighbor to ensure the rebroadcast
* of our best tq value */
if (router && router->tq_avg != 0) {
/* rebroadcast ogm of best ranking neighbor as is */
if (!compare_eth(router->addr, ethhdr->h_source)) {
batman_packet->tq = router->tq_avg;
if (router->last_ttl)
batman_packet->ttl = router->last_ttl - 1;
}
tq_avg = router->tq_avg;
}
if (router)
neigh_node_free_ref(router);
/* apply hop penalty */
batman_packet->tq = hop_penalty(batman_packet->tq, bat_priv);
bat_dbg(DBG_BATMAN, bat_priv,
"Forwarding packet: tq_orig: %i, tq_avg: %i, "
"tq_forw: %i, ttl_orig: %i, ttl_forw: %i\n",
in_tq, tq_avg, batman_packet->tq, in_ttl - 1,
batman_packet->ttl);
batman_packet->seqno = htonl(batman_packet->seqno);
batman_packet->tt_crc = htons(batman_packet->tt_crc);
/* switch of primaries first hop flag when forwarding */
batman_packet->flags &= ~PRIMARIES_FIRST_HOP;
if (directlink)
batman_packet->flags |= DIRECTLINK;
else
batman_packet->flags &= ~DIRECTLINK;
send_time = forward_send_time();
add_bat_packet_to_list(bat_priv,
(unsigned char *)batman_packet,
sizeof(*batman_packet) + tt_len(tt_num_changes),
if_incoming, 0, send_time);
bat_ogm_schedule(hard_iface, tt_num_changes);
}
static void forw_packet_free(struct forw_packet *forw_packet)
......@@ -557,7 +302,7 @@ static void send_outstanding_bcast_packet(struct work_struct *work)
atomic_inc(&bat_priv->bcast_queue_left);
}
void send_outstanding_bat_packet(struct work_struct *work)
void send_outstanding_bat_ogm_packet(struct work_struct *work)
{
struct delayed_work *delayed_work =
container_of(work, struct delayed_work, work);
......@@ -573,7 +318,7 @@ void send_outstanding_bat_packet(struct work_struct *work)
if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING)
goto out;
send_packet(forw_packet);
bat_ogm_emit(forw_packet);
/**
* we have to have at least one packet in the queue
......@@ -581,7 +326,7 @@ void send_outstanding_bat_packet(struct work_struct *work)
* shutting down
*/
if (forw_packet->own)
schedule_own_packet(forw_packet->if_incoming);
schedule_bat_ogm(forw_packet->if_incoming);
out:
/* don't count own packet */
......
net/batman-adv/send.h
浏览文件 @ 0c070900
......@@ -24,15 +24,10 @@
int send_skb_packet(struct sk_buff *skb, struct hard_iface *hard_iface,
const uint8_t *dst_addr);
void schedule_own_packet(struct hard_iface *hard_iface);
void schedule_forward_packet(struct orig_node *orig_node,
const struct ethhdr *ethhdr,
struct batman_packet *batman_packet,
int directlink,
struct hard_iface *if_outgoing);
void schedule_bat_ogm(struct hard_iface *hard_iface);
int add_bcast_packet_to_list(struct bat_priv *bat_priv,
const struct sk_buff *skb, unsigned long delay);
void send_outstanding_bat_packet(struct work_struct *work);
void send_outstanding_bat_ogm_packet(struct work_struct *work);
void purge_outstanding_packets(struct bat_priv *bat_priv,
const struct hard_iface *hard_iface);
......
net/batman-adv/soft-interface.c
浏览文件 @ 0c070900
......@@ -445,30 +445,31 @@ static void softif_batman_recv(struct sk_buff *skb, struct net_device *dev,
{
struct bat_priv *bat_priv = netdev_priv(dev);
struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
struct batman_packet *batman_packet;
struct batman_ogm_packet *batman_ogm_packet;
struct softif_neigh *softif_neigh = NULL;
struct hard_iface *primary_if = NULL;
struct softif_neigh *curr_softif_neigh = NULL;
if (ntohs(ethhdr->h_proto) == ETH_P_8021Q)
batman_packet = (struct batman_packet *)
batman_ogm_packet = (struct batman_ogm_packet *)
(skb->data + ETH_HLEN + VLAN_HLEN);
else
batman_packet = (struct batman_packet *)(skb->data + ETH_HLEN);
batman_ogm_packet = (struct batman_ogm_packet *)
(skb->data + ETH_HLEN);
if (batman_packet->version != COMPAT_VERSION)
if (batman_ogm_packet->version != COMPAT_VERSION)
goto out;
if (batman_packet->packet_type != BAT_PACKET)
if (batman_ogm_packet->packet_type != BAT_OGM)
goto out;
if (!(batman_packet->flags & PRIMARIES_FIRST_HOP))
if (!(batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
goto out;
if (is_my_mac(batman_packet->orig))
if (is_my_mac(batman_ogm_packet->orig))
goto out;
softif_neigh = softif_neigh_get(bat_priv, batman_packet->orig, vid);
softif_neigh = softif_neigh_get(bat_priv, batman_ogm_packet->orig, vid);
if (!softif_neigh)
goto out;
......@@ -800,10 +801,8 @@ struct net_device *softif_create(const char *name)
soft_iface = alloc_netdev(sizeof(*bat_priv), name, interface_setup);
if (!soft_iface) {
pr_err("Unable to allocate the batman interface: %s\n", name);
if (!soft_iface)
goto out;
}
ret = register_netdevice(soft_iface);
if (ret < 0) {
......
net/batman-adv/vis.c
浏览文件 @ 0c070900
......@@ -887,10 +887,8 @@ int vis_init(struct bat_priv *bat_priv)
}
bat_priv->my_vis_info = kmalloc(MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
if (!bat_priv->my_vis_info) {
pr_err("Can't initialize vis packet\n");
if (!bat_priv->my_vis_info)
goto err;
}
bat_priv->my_vis_info->skb_packet = dev_alloc_skb(sizeof(*packet) +
MAX_VIS_PACKET_SIZE +
......
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