#include "hard-interface.h"
#include "send.h"
#include "translation-table.h"
-#include "log.h"
#include "types.h"
#include "hash.h"
#include <linux/ethtool.h>
#include <linux/etherdevice.h>
-#include "compat.h"
static uint16_t bcast_seqno = 1; /* give own bcast messages seq numbers to avoid
* broadcast storms */
static int32_t skb_packets;
static int32_t skb_bad_packets;
-static int32_t lock_dropped;
unsigned char mainIfAddr[ETH_ALEN];
static unsigned char mainIfAddr_default[ETH_ALEN];
return (memcmp(mainIfAddr, mainIfAddr_default, ETH_ALEN) != 0 ? 1 : 0);
}
-static int my_skb_push(struct sk_buff *skb, unsigned int len)
+int my_skb_push(struct sk_buff *skb, unsigned int len)
{
int result = 0;
skb_packets++;
- if (skb->data - len < skb->head) {
+ if (skb_headroom(skb) < len) {
skb_bad_packets++;
result = pskb_expand_head(skb, len, 0, GFP_ATOMIC);
/* generate random address */
random_ether_addr(dev_addr);
- memcpy(dev->dev_addr, dev_addr, sizeof(dev->dev_addr));
+ memcpy(dev->dev_addr, dev_addr, ETH_ALEN);
SET_ETHTOOL_OPS(dev, &bat_ethtool_ops);
return &priv->stats;
}
-int interface_set_mac_addr(struct net_device *dev, void *addr)
+int interface_set_mac_addr(struct net_device *dev, void *p)
{
- return -EBUSY;
+ struct sockaddr *addr = p;
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ hna_local_remove(dev->dev_addr, "mac address changed");
+ memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+ hna_local_add(dev->dev_addr);
+
+ return 0;
}
int interface_change_mtu(struct net_device *dev, int new_mtu)
struct orig_node *orig_node;
struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
struct bat_priv *priv = netdev_priv(dev);
+ struct batman_if *batman_if;
+ uint8_t dstaddr[6];
int data_len = skb->len;
+ unsigned long flags;
if (atomic_read(&module_state) != MODULE_ACTIVE)
goto dropped;
goto dropped;
bcast_packet = (struct bcast_packet *)skb->data;
-
bcast_packet->version = COMPAT_VERSION;
/* batman packet type: broadcast */
/* hw address of first interface is the orig mac because only
* this mac is known throughout the mesh */
memcpy(bcast_packet->orig, mainIfAddr, ETH_ALEN);
+
/* set broadcast sequence number */
bcast_packet->seqno = htons(bcast_seqno);
bcast_seqno++;
/* broadcast packet */
- add_bcast_packet_to_list(skb->data, skb->len);
+ add_bcast_packet_to_list(skb);
+ /* a copy is stored in the bcast list, therefore removing
+ * the original skb. */
+ kfree_skb(skb);
/* unicast packet */
} else {
-
- /* simply spin_lock()ing can deadlock when the lock is already
- * hold. */
- /* TODO: defer the work in a working queue instead of
- * dropping */
- if (!spin_trylock(&orig_hash_lock)) {
- lock_dropped++;
- debug_log(LOG_TYPE_NOTICE, "%d packets dropped because lock was hold\n", lock_dropped);
- goto dropped;
- }
-
+ spin_lock_irqsave(&orig_hash_lock, flags);
/* get routing information */
orig_node = ((struct orig_node *)hash_find(orig_hash,
ethhdr->h_dest));
if (orig_node->batman_if->if_active != IF_ACTIVE)
goto unlock;
- send_raw_packet(skb->data, skb->len,
- orig_node->batman_if,
- orig_node->router->addr);
+ /* don't lock while sending the packets ... we therefore
+ * copy the required data before sending */
+
+ batman_if = orig_node->batman_if;
+ memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
+ spin_unlock_irqrestore(&orig_hash_lock, flags);
+
+ send_skb_packet(skb, batman_if, dstaddr);
} else {
goto unlock;
}
-
- spin_unlock(&orig_hash_lock);
}
priv->stats.tx_packets++;
goto end;
unlock:
- spin_unlock(&orig_hash_lock);
+ spin_unlock_irqrestore(&orig_hash_lock, flags);
dropped:
priv->stats.tx_dropped++;
end:
- kfree_skb(skb);
- return 0;
+ return NETDEV_TX_OK;
}
-void interface_rx(struct net_device *dev, void *packet, int packet_len)
+void interface_rx(struct sk_buff *skb, int hdr_size)
{
- struct sk_buff *skb;
+ struct net_device *dev = soft_device;
struct bat_priv *priv = netdev_priv(dev);
- skb = dev_alloc_skb(packet_len);
-
- if (!skb) {
- priv->stats.rx_dropped++;
- goto out;
+ /* check if enough space is available for pulling, and pull */
+ if (!pskb_may_pull(skb, hdr_size)) {
+ kfree_skb(skb);
+ return;
}
+ skb_pull_rcsum(skb, hdr_size);
+/* skb_set_mac_header(skb, -sizeof(struct ethhdr));*/
- memcpy(skb_put(skb, packet_len), packet, packet_len);
-
- /* Write metadata, and then pass to the receive level */
skb->dev = dev;
skb->protocol = eth_type_trans(skb, dev);
- skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ /* should not be neccesary anymore as we use skb_pull_rcsum()
+ * TODO: please verify this and remove this TODO
+ * -- Dec 21st 2009, Simon Wunderlich */
+
+/* skb->ip_summed = CHECKSUM_UNNECESSARY;*/
+
+ /* TODO: set skb->pkt_type to PACKET_BROADCAST, PACKET_MULTICAST,
+ * PACKET_OTHERHOST or PACKET_HOST */
priv->stats.rx_packets++;
- priv->stats.rx_bytes += packet_len;
+ priv->stats.rx_bytes += skb->len;
dev->last_rx = jiffies;
netif_rx(skb);
-
-out:
- return;
}
/* ethtool */
static void bat_set_msglevel(struct net_device *dev, u32 value)
{
- return;
}
static u32 bat_get_link(struct net_device *dev)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff