Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-23 20:51:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

batman-adv: rename all instances of batman_packet to batman_ogm_packet

Browse Source 
The follow-up routing code changes are going to introduce additional
routing packet types which make this distinction necessary.

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Marek Lindner 2011-07-29 17:31:50 +02:00
parent a943cac144
commit b6da4bf5d7
9 changed files with 204 additions and 182 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
net/batman-adv/aggregation.c
View File

@ -27,7 +27,8 @@
#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,
static bool can_aggregate_with(const struct batman_ogm_packet
*new_batman_ogm_packet,
struct bat_priv *bat_priv,
int packet_len,
unsigned long send_time,
@ -35,8 +36,8 @@ static bool can_aggregate_with(const struct batman_packet *new_batman_packet,
const struct hard_iface *if_incoming,
const struct forw_packet *forw_packet)
{
struct batman_packet *batman_packet =
(struct batman_packet *)forw_packet->skb->data;
struct batman_ogm_packet *batman_ogm_packet =
(struct batman_ogm_packet *)forw_packet->skb->data;
int aggregated_bytes = forw_packet->packet_len + packet_len;
struct hard_iface *primary_if = NULL;
bool res = false;
@ -71,8 +72,8 @@ static bool can_aggregate_with(const struct batman_packet *new_batman_packet,
/* packets without direct link flag and high TTL
* are flooded through the net */
if ((!directlink) &&
(!(batman_packet->flags & DIRECTLINK)) &&
(batman_packet->ttl != 1) &&
(!(batman_ogm_packet->flags & DIRECTLINK)) &&
(batman_ogm_packet->ttl != 1) &&
/* own packets originating non-primary
* interfaces leave only that interface */
@ -85,13 +86,13 @@ static bool can_aggregate_with(const struct batman_packet *new_batman_packet,
/* if the incoming packet is sent via this one
* interface only - we still can aggregate */
if ((directlink) &&
(new_batman_packet->ttl == 1) &&
(new_batman_ogm_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 ||
(batman_ogm_packet->flags & DIRECTLINK ||
(forw_packet->own &&
forw_packet->if_incoming != primary_if))) {
res = true;
@ -213,9 +214,11 @@ void add_bat_packet_to_list(struct bat_priv *bat_priv,
*/
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;
struct batman_ogm_packet *batman_ogm_packet;
bool direct_link;
batman_ogm_packet = (struct batman_ogm_packet *)packet_buff;
direct_link = batman_ogm_packet->flags & DIRECTLINK ? 1 : 0;
/* find position for the packet in the forward queue */
spin_lock_bh(&bat_priv->forw_bat_list_lock);
@ -223,7 +226,7 @@ void add_bat_packet_to_list(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 (can_aggregate_with(batman_packet,
if (can_aggregate_with(batman_ogm_packet,
bat_priv,
packet_len,
send_time,
@ -267,27 +270,28 @@ 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;
struct batman_ogm_packet *batman_ogm_packet;
int buff_pos = 0;
unsigned char *tt_buff;
batman_packet = (struct batman_packet *)packet_buff;
batman_ogm_packet = (struct batman_ogm_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);
batman_ogm_packet->seqno = ntohl(batman_ogm_packet->seqno);
batman_ogm_packet->tt_crc = ntohs(batman_ogm_packet->tt_crc);
tt_buff = packet_buff + buff_pos + BAT_PACKET_LEN;
tt_buff = packet_buff + buff_pos + BATMAN_OGM_LEN;
receive_bat_packet(ethhdr, batman_packet, tt_buff, if_incoming);
receive_bat_packet(ethhdr, batman_ogm_packet,
tt_buff, if_incoming);
buff_pos += BAT_PACKET_LEN +
tt_len(batman_packet->tt_num_changes);
buff_pos += BATMAN_OGM_LEN +
tt_len(batman_ogm_packet->tt_num_changes);
batman_packet = (struct batman_packet *)
(packet_buff + buff_pos);
batman_ogm_packet = (struct batman_ogm_packet *)
(packet_buff + buff_pos);
} while (aggregated_packet(buff_pos, packet_len,
batman_packet->tt_num_changes));
batman_ogm_packet->tt_num_changes));
}

2
net/batman-adv/aggregation.h
View File

@ -28,7 +28,7 @@
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);
int next_buff_pos = buff_pos + BATMAN_OGM_LEN + tt_len(tt_num_changes);
return (next_buff_pos <= packet_len) &&
(next_buff_pos <= MAX_AGGREGATION_BYTES);

49
net/batman-adv/hard-interface.c
View File

@ -131,7 +131,7 @@ 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;
struct batman_ogm_packet *batman_ogm_packet;
ASSERT_RTNL();
@ -147,9 +147,10 @@ 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;
batman_ogm_packet = (struct batman_ogm_packet *)
(new_hard_iface->packet_buff);
batman_ogm_packet->flags = PRIMARIES_FIRST_HOP;
batman_ogm_packet->ttl = TTL;
primary_if_update_addr(bat_priv);
}
@ -164,9 +165,12 @@ static bool hardif_is_iface_up(const struct hard_iface *hard_iface)
static void update_mac_addresses(struct hard_iface *hard_iface)
{
memcpy(((struct batman_packet *)(hard_iface->packet_buff))->orig,
struct batman_ogm_packet *batman_ogm_packet;
batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
memcpy(batman_ogm_packet->orig,
hard_iface->net_dev->dev_addr, ETH_ALEN);
memcpy(((struct batman_packet *)(hard_iface->packet_buff))->prev_sender,
memcpy(batman_ogm_packet->prev_sender,
hard_iface->net_dev->dev_addr, ETH_ALEN);
}
@ -283,7 +287,7 @@ int hardif_enable_interface(struct hard_iface *hard_iface,
const char *iface_name)
{
struct bat_priv *bat_priv;
struct batman_packet *batman_packet;
struct batman_ogm_packet *batman_ogm_packet;
struct net_device *soft_iface;
int ret;
@ -318,7 +322,7 @@ 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_len = BATMAN_OGM_LEN;
hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
if (!hard_iface->packet_buff) {
@ -328,14 +332,15 @@ 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;
batman_ogm_packet = (struct batman_ogm_packet *)
(hard_iface->packet_buff);
batman_ogm_packet->packet_type = BAT_OGM;
batman_ogm_packet->version = COMPAT_VERSION;
batman_ogm_packet->flags = NO_FLAGS;
batman_ogm_packet->ttl = 2;
batman_ogm_packet->tq = TQ_MAX_VALUE;
batman_ogm_packet->tt_num_changes = 0;
batman_ogm_packet->ttvn = 0;
hard_iface->if_num = bat_priv->num_ifaces;
bat_priv->num_ifaces++;
@ -580,7 +585,7 @@ 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;
@ -612,21 +617,21 @@ 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:
case BAT_OGM:
ret = recv_bat_packet(skb, hard_iface);
break;

18
net/batman-adv/packet.h
View File

@ -25,14 +25,14 @@
#define ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */
enum bat_packettype {
BAT_PACKET = 0x01,
BAT_ICMP = 0x02,
BAT_UNICAST = 0x03,
BAT_BCAST = 0x04,
BAT_VIS = 0x05,
BAT_OGM = 0x01,
BAT_ICMP = 0x02,
BAT_UNICAST = 0x03,
BAT_BCAST = 0x04,
BAT_VIS = 0x05,
BAT_UNICAST_FRAG = 0x06,
BAT_TT_QUERY = 0x07,
BAT_ROAM_ADV = 0x08
BAT_TT_QUERY = 0x07,
BAT_ROAM_ADV = 0x08
};
/* this file is included by batctl which needs these defines */
@ -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;

118
net/batman-adv/routing.c
View File

@ -130,7 +130,7 @@ out:
static int is_bidirectional_neigh(struct orig_node *orig_node,
struct orig_node *orig_neigh_node,
struct batman_packet *batman_packet,
struct batman_ogm_packet *batman_ogm_packet,
struct hard_iface *if_incoming)
{
struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
@ -209,7 +209,8 @@ static int is_bidirectional_neigh(struct orig_node *orig_node,
TQ_LOCAL_WINDOW_SIZE *
TQ_LOCAL_WINDOW_SIZE);
batman_packet->tq = ((batman_packet->tq * tq_own * tq_asym_penalty) /
batman_ogm_packet->tq = ((batman_ogm_packet->tq * tq_own
* tq_asym_penalty) /
(TQ_MAX_VALUE * TQ_MAX_VALUE));
bat_dbg(DBG_BATMAN, bat_priv,
@ -218,11 +219,11 @@ static int is_bidirectional_neigh(struct orig_node *orig_node,
"real recv = %2i, local tq: %3i, asym_penalty: %3i, "
"total tq: %3i\n",
orig_node->orig, orig_neigh_node->orig, total_count,
neigh_rq_count, tq_own, tq_asym_penalty, batman_packet->tq);
neigh_rq_count, tq_own, tq_asym_penalty, batman_ogm_packet->tq);
/* if link has the minimum required transmission quality
* consider it bidirectional */
if (batman_packet->tq >= TQ_TOTAL_BIDRECT_LIMIT)
if (batman_ogm_packet->tq >= TQ_TOTAL_BIDRECT_LIMIT)
ret = 1;
out:
@ -321,9 +322,10 @@ out:
/* copy primary address for bonding */
static void bonding_save_primary(const struct orig_node *orig_node,
struct orig_node *orig_neigh_node,
const struct batman_packet *batman_packet)
const struct batman_ogm_packet
*batman_ogm_packet)
{
if (!(batman_packet->flags & PRIMARIES_FIRST_HOP))
if (!(batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
return;
memcpy(orig_neigh_node->primary_addr, orig_node->orig, ETH_ALEN);
@ -331,7 +333,7 @@ static void bonding_save_primary(const struct orig_node *orig_node,
static void update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node,
const struct ethhdr *ethhdr,
const struct batman_packet *batman_packet,
const struct batman_ogm_packet *batman_ogm_packet,
struct hard_iface *if_incoming,
const unsigned char *tt_buff, int is_duplicate)
{
@ -386,19 +388,19 @@ static void update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node,
rcu_read_unlock();
orig_node->flags = batman_packet->flags;
orig_node->flags = batman_ogm_packet->flags;
neigh_node->last_valid = jiffies;
spin_lock_bh(&neigh_node->tq_lock);
ring_buffer_set(neigh_node->tq_recv,
&neigh_node->tq_index,
batman_packet->tq);
batman_ogm_packet->tq);
neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv);
spin_unlock_bh(&neigh_node->tq_lock);
if (!is_duplicate) {
orig_node->last_ttl = batman_packet->ttl;
neigh_node->last_ttl = batman_packet->ttl;
orig_node->last_ttl = batman_ogm_packet->ttl;
neigh_node->last_ttl = batman_ogm_packet->ttl;
}
bonding_candidate_add(orig_node, neigh_node);
@ -437,17 +439,19 @@ static void update_orig(struct bat_priv *bat_priv, struct orig_node *orig_node,
update_tt:
/* I have to check for transtable changes only if the OGM has been
* sent through a primary interface */
if (((batman_packet->orig != ethhdr->h_source) &&
(batman_packet->ttl > 2)) ||
(batman_packet->flags & PRIMARIES_FIRST_HOP))
if (((batman_ogm_packet->orig != ethhdr->h_source) &&
(batman_ogm_packet->ttl > 2)) ||
(batman_ogm_packet->flags & PRIMARIES_FIRST_HOP))
tt_update_orig(bat_priv, orig_node, tt_buff,
batman_packet->tt_num_changes,
batman_packet->ttvn, batman_packet->tt_crc);
batman_ogm_packet->tt_num_changes,
batman_ogm_packet->ttvn,
batman_ogm_packet->tt_crc);
if (orig_node->gw_flags != batman_packet->gw_flags)
gw_node_update(bat_priv, orig_node, batman_packet->gw_flags);
if (orig_node->gw_flags != batman_ogm_packet->gw_flags)
gw_node_update(bat_priv, orig_node,
batman_ogm_packet->gw_flags);
orig_node->gw_flags = batman_packet->gw_flags;
orig_node->gw_flags = batman_ogm_packet->gw_flags;
/* restart gateway selection if fast or late switching was enabled */
if ((orig_node->gw_flags) &&
@ -500,8 +504,8 @@ static int window_protected(struct bat_priv *bat_priv,
* was protected. Caller should drop it.
*/
static int count_real_packets(const struct ethhdr *ethhdr,
const struct batman_packet *batman_packet,
const struct hard_iface *if_incoming)
const struct batman_ogm_packet *batman_ogm_packet,
const struct hard_iface *if_incoming)
{
struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct orig_node *orig_node;
@ -512,12 +516,12 @@ static int count_real_packets(const struct ethhdr *ethhdr,
int need_update = 0;
int set_mark, ret = -1;
orig_node = get_orig_node(bat_priv, batman_packet->orig);
orig_node = get_orig_node(bat_priv, batman_ogm_packet->orig);
if (!orig_node)
return 0;
spin_lock_bh(&orig_node->ogm_cnt_lock);
seq_diff = batman_packet->seqno - orig_node->last_real_seqno;
seq_diff = batman_ogm_packet->seqno - orig_node->last_real_seqno;
/* signalize caller that the packet is to be dropped. */
if (window_protected(bat_priv, seq_diff,
@ -530,7 +534,7 @@ static int count_real_packets(const struct ethhdr *ethhdr,
is_duplicate |= get_bit_status(tmp_neigh_node->real_bits,
orig_node->last_real_seqno,
batman_packet->seqno);
batman_ogm_packet->seqno);
if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
(tmp_neigh_node->if_incoming == if_incoming))
@ -551,8 +555,8 @@ static int count_real_packets(const struct ethhdr *ethhdr,
if (need_update) {
bat_dbg(DBG_BATMAN, bat_priv,
"updating last_seqno: old %d, new %d\n",
orig_node->last_real_seqno, batman_packet->seqno);
orig_node->last_real_seqno = batman_packet->seqno;
orig_node->last_real_seqno, batman_ogm_packet->seqno);
orig_node->last_real_seqno = batman_ogm_packet->seqno;
}
ret = is_duplicate;
@ -564,7 +568,7 @@ out:
}
void receive_bat_packet(const struct ethhdr *ethhdr,
struct batman_packet *batman_packet,
struct batman_ogm_packet *batman_ogm_packet,
const unsigned char *tt_buff,
struct hard_iface *if_incoming)
{
@ -587,31 +591,31 @@ void receive_bat_packet(const struct ethhdr *ethhdr,
* it as an additional length.
*
* TODO: A more sane solution would be to have a bit in the
* batman_packet to detect whether the packet is the last
* batman_ogm_packet to detect whether the packet is the last
* packet in an aggregation. Here we expect that the padding
* is always zero (or not 0x01)
*/
if (batman_packet->packet_type != BAT_PACKET)
if (batman_ogm_packet->packet_type != BAT_OGM)
return;
/* could be changed by schedule_own_packet() */
if_incoming_seqno = atomic_read(&if_incoming->seqno);
has_directlink_flag = (batman_packet->flags & DIRECTLINK ? 1 : 0);
has_directlink_flag = (batman_ogm_packet->flags & DIRECTLINK ? 1 : 0);
is_single_hop_neigh = (compare_eth(ethhdr->h_source,
batman_packet->orig) ? 1 : 0);
batman_ogm_packet->orig) ? 1 : 0);
bat_dbg(DBG_BATMAN, bat_priv,
"Received BATMAN packet via NB: %pM, IF: %s [%pM] "
"(from OG: %pM, via prev OG: %pM, seqno %d, ttvn %u, "
"crc %u, changes %u, td %d, TTL %d, V %d, IDF %d)\n",
ethhdr->h_source, if_incoming->net_dev->name,
if_incoming->net_dev->dev_addr, batman_packet->orig,
batman_packet->prev_sender, batman_packet->seqno,
batman_packet->ttvn, batman_packet->tt_crc,
batman_packet->tt_num_changes, batman_packet->tq,
batman_packet->ttl, batman_packet->version,
if_incoming->net_dev->dev_addr, batman_ogm_packet->orig,
batman_ogm_packet->prev_sender, batman_ogm_packet->seqno,
batman_ogm_packet->ttvn, batman_ogm_packet->tt_crc,
batman_ogm_packet->tt_num_changes, batman_ogm_packet->tq,
batman_ogm_packet->ttl, batman_ogm_packet->version,
has_directlink_flag);
rcu_read_lock();
@ -626,11 +630,11 @@ void receive_bat_packet(const struct ethhdr *ethhdr,
hard_iface->net_dev->dev_addr))
is_my_addr = 1;
if (compare_eth(batman_packet->orig,
if (compare_eth(batman_ogm_packet->orig,
hard_iface->net_dev->dev_addr))
is_my_orig = 1;
if (compare_eth(batman_packet->prev_sender,
if (compare_eth(batman_ogm_packet->prev_sender,
hard_iface->net_dev->dev_addr))
is_my_oldorig = 1;
@ -639,10 +643,10 @@ void receive_bat_packet(const struct ethhdr *ethhdr,
}
rcu_read_unlock();
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);
return;
}
@ -674,13 +678,14 @@ void receive_bat_packet(const struct ethhdr *ethhdr,
/* save packet seqno for bidirectional check */
if (has_directlink_flag &&
compare_eth(if_incoming->net_dev->dev_addr,
batman_packet->orig)) {
batman_ogm_packet->orig)) {
offset = if_incoming->if_num * NUM_WORDS;
spin_lock_bh(&orig_neigh_node->ogm_cnt_lock);
word = &(orig_neigh_node->bcast_own[offset]);
bit_mark(word,
if_incoming_seqno - batman_packet->seqno - 2);
if_incoming_seqno -
batman_ogm_packet->seqno - 2);
orig_neigh_node->bcast_own_sum[if_incoming->if_num] =
bit_packet_count(word);
spin_unlock_bh(&orig_neigh_node->ogm_cnt_lock);
@ -699,11 +704,12 @@ void receive_bat_packet(const struct ethhdr *ethhdr,
return;
}
orig_node = get_orig_node(bat_priv, batman_packet->orig);
orig_node = get_orig_node(bat_priv, batman_ogm_packet->orig);
if (!orig_node)
return;
is_duplicate = count_real_packets(ethhdr, batman_packet, if_incoming);
is_duplicate = count_real_packets(ethhdr, batman_ogm_packet,
if_incoming);
if (is_duplicate == -1) {
bat_dbg(DBG_BATMAN, bat_priv,
@ -712,7 +718,7 @@ void receive_bat_packet(const struct ethhdr *ethhdr,
goto out;
}
if (batman_packet->tq == 0) {
if (batman_ogm_packet->tq == 0) {
bat_dbg(DBG_BATMAN, bat_priv,
"Drop packet: originator packet with tq equal 0\n");
goto out;
@ -724,8 +730,9 @@ void receive_bat_packet(const struct ethhdr *ethhdr,
/* avoid temporary routing loops */
if (router && router_router &&
(compare_eth(router->addr, batman_packet->prev_sender)) &&
!(compare_eth(batman_packet->orig, batman_packet->prev_sender)) &&
(compare_eth(router->addr, batman_ogm_packet->prev_sender)) &&
!(compare_eth(batman_ogm_packet->orig,
batman_ogm_packet->prev_sender)) &&
(compare_eth(router->addr, router_router->addr))) {
bat_dbg(DBG_BATMAN, bat_priv,
"Drop packet: ignoring all rebroadcast packets that "
@ -752,24 +759,25 @@ void receive_bat_packet(const struct ethhdr *ethhdr,
}
is_bidirectional = is_bidirectional_neigh(orig_node, orig_neigh_node,
batman_packet, if_incoming);
batman_ogm_packet,
if_incoming);
bonding_save_primary(orig_node, orig_neigh_node, batman_packet);
bonding_save_primary(orig_node, orig_neigh_node, batman_ogm_packet);
/* update ranking if it is not a duplicate or has the same
* seqno and similar ttl as the non-duplicate */
if (is_bidirectional &&
(!is_duplicate ||
((orig_node->last_real_seqno == batman_packet->seqno) &&
(orig_node->last_ttl - 3 <= batman_packet->ttl))))
update_orig(bat_priv, orig_node, ethhdr, batman_packet,
((orig_node->last_real_seqno == batman_ogm_packet->seqno) &&
(orig_node->last_ttl - 3 <= batman_ogm_packet->ttl))))
update_orig(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 */
schedule_forward_packet(orig_node, ethhdr, batman_packet,
schedule_forward_packet(orig_node, ethhdr, batman_ogm_packet,
1, if_incoming);
bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: "
@ -792,7 +800,7 @@ void receive_bat_packet(const struct ethhdr *ethhdr,
bat_dbg(DBG_BATMAN, bat_priv,
"Forwarding packet: rebroadcast originator packet\n");
schedule_forward_packet(orig_node, ethhdr, batman_packet,
schedule_forward_packet(orig_node, ethhdr, batman_ogm_packet,
0, if_incoming);
out_neigh:
@ -814,7 +822,7 @@ int recv_bat_packet(struct sk_buff *skb, struct hard_iface *hard_iface)
struct ethhdr *ethhdr;
/* drop packet if it has not necessary minimum size */
if (unlikely(!pskb_may_pull(skb, sizeof(struct batman_packet))))
if (unlikely(!pskb_may_pull(skb, BATMAN_OGM_LEN)))
return NET_RX_DROP;
ethhdr = (struct ethhdr *)skb_mac_header(skb);

2
net/batman-adv/routing.h
View File

@ -24,7 +24,7 @@
void slide_own_bcast_window(struct hard_iface *hard_iface);
void receive_bat_packet(const struct ethhdr *ethhdr,
struct batman_packet *batman_packet,
struct batman_ogm_packet *batman_ogm_packet,
const unsigned char *tt_buff,
struct hard_iface *if_incoming);
void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,

130
net/batman-adv/send.c
View File

@ -107,7 +107,7 @@ static void send_packet_to_if(struct forw_packet *forw_packet,
char *fwd_str;
uint8_t packet_num;
int16_t buff_pos;
struct batman_packet *batman_packet;
struct batman_ogm_packet *batman_ogm_packet;
struct sk_buff *skb;
if (hard_iface->if_status != IF_ACTIVE)
@ -115,20 +115,20 @@ static void send_packet_to_if(struct forw_packet *forw_packet,
packet_num = 0;
buff_pos = 0;
batman_packet = (struct batman_packet *)forw_packet->skb->data;
batman_ogm_packet = (struct batman_ogm_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)) {
batman_ogm_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;
batman_ogm_packet->flags |= DIRECTLINK;
else
batman_packet->flags &= ~DIRECTLINK;
batman_ogm_packet->flags &= ~DIRECTLINK;
fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ?
"Sending own" :
@ -137,18 +137,19 @@ static void send_packet_to_if(struct forw_packet *forw_packet,
"%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 ?
batman_ogm_packet->orig,
ntohl(batman_ogm_packet->seqno),
batman_ogm_packet->tq, batman_ogm_packet->ttl,
(batman_ogm_packet->flags & DIRECTLINK ?
"on" : "off"),
batman_packet->ttvn, hard_iface->net_dev->name,
batman_ogm_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);
buff_pos += BATMAN_OGM_LEN +
tt_len(batman_ogm_packet->tt_num_changes);
packet_num++;
batman_packet = (struct batman_packet *)
(forw_packet->skb->data + buff_pos);
batman_ogm_packet = (struct batman_ogm_packet *)
(forw_packet->skb->data + buff_pos);
}
/* create clone because function is called more than once */
@ -164,9 +165,11 @@ static void send_packet(struct forw_packet *forw_packet)
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);
struct batman_ogm_packet *batman_ogm_packet =
(struct batman_ogm_packet *)(forw_packet->skb->data);
unsigned char directlink;
directlink = (batman_ogm_packet->flags & DIRECTLINK ? 1 : 0);
if (!forw_packet->if_incoming) {
pr_err("Error - can't forward packet: incoming iface not "
@ -186,7 +189,7 @@ static void send_packet(struct forw_packet *forw_packet)
/* multihomed peer assumed */
/* non-primary OGMs are only broadcasted on their interface */
if ((directlink && (batman_packet->ttl == 1)) ||
if ((directlink && (batman_ogm_packet->ttl == 1)) ||
(forw_packet->own && (forw_packet->if_incoming != primary_if))) {
/* FIXME: what about aggregated packets ? */
@ -194,8 +197,9 @@ static void send_packet(struct forw_packet *forw_packet)
"%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,
batman_ogm_packet->orig,
ntohl(batman_ogm_packet->seqno),
batman_ogm_packet->ttl,
forw_packet->if_incoming->net_dev->name,
forw_packet->if_incoming->net_dev->dev_addr);
@ -223,17 +227,16 @@ out:
}
static void realloc_packet_buffer(struct hard_iface *hard_iface,
int new_len)
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;
@ -246,39 +249,39 @@ static void prepare_packet_buffer(struct bat_priv *bat_priv,
struct hard_iface *hard_iface)
{
int new_len;
struct batman_packet *batman_packet;
struct batman_ogm_packet *batman_ogm_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;
batman_ogm_packet = (struct batman_ogm_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);
batman_ogm_packet->tt_num_changes = 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,
struct hard_iface *hard_iface)
struct hard_iface *hard_iface)
{
struct batman_packet *batman_packet;
struct batman_ogm_packet *batman_ogm_packet;
realloc_packet_buffer(hard_iface, BAT_PACKET_LEN);
realloc_packet_buffer(hard_iface, BATMAN_OGM_LEN);
batman_packet = (struct batman_packet *)hard_iface->packet_buff;
batman_packet->tt_num_changes = 0;
batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
batman_ogm_packet->tt_num_changes = 0;
}
void schedule_own_packet(struct hard_iface *hard_iface)
@ -286,7 +289,7 @@ void schedule_own_packet(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;
struct batman_ogm_packet *batman_ogm_packet;
int vis_server;
if ((hard_iface->if_status == IF_NOT_IN_USE) ||
@ -322,26 +325,27 @@ void schedule_own_packet(struct hard_iface *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;
batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;
/* change sequence number to network order */
batman_packet->seqno =
htonl((uint32_t)atomic_read(&hard_iface->seqno));
batman_ogm_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));
batman_ogm_packet->ttvn = atomic_read(&bat_priv->ttvn);
batman_ogm_packet->tt_crc = htons((uint16_t)
atomic_read(&bat_priv->tt_crc));
if (vis_server == VIS_TYPE_SERVER_SYNC)
batman_packet->flags |= VIS_SERVER;
batman_ogm_packet->flags |= VIS_SERVER;
else
batman_packet->flags &= ~VIS_SERVER;
batman_ogm_packet->flags &= ~VIS_SERVER;
if ((hard_iface == primary_if) &&
(atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER))
batman_packet->gw_flags =
batman_ogm_packet->gw_flags =
(uint8_t)atomic_read(&bat_priv->gw_bandwidth);
else
batman_packet->gw_flags = NO_FLAGS;
batman_ogm_packet->gw_flags = NO_FLAGS;
atomic_inc(&hard_iface->seqno);
@ -358,7 +362,7 @@ 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,
struct batman_ogm_packet *batman_ogm_packet,
int directlink,
struct hard_iface *if_incoming)
{
@ -368,19 +372,19 @@ void schedule_forward_packet(struct orig_node *orig_node,
unsigned long send_time;
uint8_t tt_num_changes;
if (batman_packet->ttl <= 1) {
if (batman_ogm_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;
in_tq = batman_ogm_packet->tq;
in_ttl = batman_ogm_packet->ttl;
tt_num_changes = batman_ogm_packet->tt_num_changes;
batman_packet->ttl--;
memcpy(batman_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
batman_ogm_packet->ttl--;
memcpy(batman_ogm_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
/* rebroadcast tq of our best ranking neighbor to ensure the rebroadcast
* of our best tq value */
@ -388,10 +392,10 @@ void schedule_forward_packet(struct orig_node *orig_node,
/* rebroadcast ogm of best ranking neighbor as is */
if (!compare_eth(router->addr, ethhdr->h_source)) {
batman_packet->tq = router->tq_avg;
batman_ogm_packet->tq = router->tq_avg;
if (router->last_ttl)
batman_packet->ttl = router->last_ttl - 1;
batman_ogm_packet->ttl = router->last_ttl - 1;
}
tq_avg = router->tq_avg;
@ -401,28 +405,28 @@ void schedule_forward_packet(struct orig_node *orig_node,
neigh_node_free_ref(router);
/* apply hop penalty */
batman_packet->tq = hop_penalty(batman_packet->tq, bat_priv);
batman_ogm_packet->tq = hop_penalty(batman_ogm_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);
in_tq, tq_avg, batman_ogm_packet->tq, in_ttl - 1,
batman_ogm_packet->ttl);
batman_packet->seqno = htonl(batman_packet->seqno);
batman_packet->tt_crc = htons(batman_packet->tt_crc);
batman_ogm_packet->seqno = htonl(batman_ogm_packet->seqno);
batman_ogm_packet->tt_crc = htons(batman_ogm_packet->tt_crc);
/* switch of primaries first hop flag when forwarding */
batman_packet->flags &= ~PRIMARIES_FIRST_HOP;
batman_ogm_packet->flags &= ~PRIMARIES_FIRST_HOP;
if (directlink)
batman_packet->flags |= DIRECTLINK;
batman_ogm_packet->flags |= DIRECTLINK;
else
batman_packet->flags &= ~DIRECTLINK;
batman_ogm_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),
(unsigned char *)batman_ogm_packet,
BATMAN_OGM_LEN + tt_len(tt_num_changes),
if_incoming, 0, send_time);
}

2
net/batman-adv/send.h
View File

@ -27,7 +27,7 @@ int send_skb_packet(struct sk_buff *skb, struct hard_iface *hard_iface,
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,
struct batman_ogm_packet *batman_ogm_packet,
int directlink,
struct hard_iface *if_outgoing);
int add_bcast_packet_to_list(struct bat_priv *bat_priv,

17
net/batman-adv/soft-interface.c
View File

@ -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;