aboutsummaryrefslogtreecommitdiff
path: root/drivers/staging/batman-adv/soft-interface.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging/batman-adv/soft-interface.c')
-rw-r--r--drivers/staging/batman-adv/soft-interface.c349
1 files changed, 0 insertions, 349 deletions
diff --git a/drivers/staging/batman-adv/soft-interface.c b/drivers/staging/batman-adv/soft-interface.c
deleted file mode 100644
index d543f50b647..00000000000
--- a/drivers/staging/batman-adv/soft-interface.c
+++ /dev/null
@@ -1,349 +0,0 @@
-/*
- * Copyright (C) 2007-2009 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 "soft-interface.h"
-#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];
-static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd);
-static void bat_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info);
-static u32 bat_get_msglevel(struct net_device *dev);
-static void bat_set_msglevel(struct net_device *dev, u32 value);
-static u32 bat_get_link(struct net_device *dev);
-static u32 bat_get_rx_csum(struct net_device *dev);
-static int bat_set_rx_csum(struct net_device *dev, u32 data);
-
-static const struct ethtool_ops bat_ethtool_ops = {
- .get_settings = bat_get_settings,
- .get_drvinfo = bat_get_drvinfo,
- .get_msglevel = bat_get_msglevel,
- .set_msglevel = bat_set_msglevel,
- .get_link = bat_get_link,
- .get_rx_csum = bat_get_rx_csum,
- .set_rx_csum = bat_set_rx_csum
-};
-
-void set_main_if_addr(uint8_t *addr)
-{
- memcpy(mainIfAddr, addr, ETH_ALEN);
-}
-
-int main_if_was_up(void)
-{
- return (memcmp(mainIfAddr, mainIfAddr_default, ETH_ALEN) != 0 ? 1 : 0);
-}
-
-static int my_skb_push(struct sk_buff *skb, unsigned int len)
-{
- int result = 0;
-
- skb_packets++;
- if (skb->data - len < skb->head) {
- skb_bad_packets++;
- result = pskb_expand_head(skb, len, 0, GFP_ATOMIC);
-
- if (result < 0)
- return result;
- }
-
- skb_push(skb, len);
- return 0;
-}
-
-#ifdef HAVE_NET_DEVICE_OPS
-static const struct net_device_ops bat_netdev_ops = {
- .ndo_open = interface_open,
- .ndo_stop = interface_release,
- .ndo_get_stats = interface_stats,
- .ndo_set_mac_address = interface_set_mac_addr,
- .ndo_change_mtu = interface_change_mtu,
- .ndo_start_xmit = interface_tx,
- .ndo_validate_addr = eth_validate_addr
-};
-#endif
-
-void interface_setup(struct net_device *dev)
-{
- struct bat_priv *priv = netdev_priv(dev);
- char dev_addr[ETH_ALEN];
-
- ether_setup(dev);
-
-#ifdef HAVE_NET_DEVICE_OPS
- dev->netdev_ops = &bat_netdev_ops;
-#else
- dev->open = interface_open;
- dev->stop = interface_release;
- dev->get_stats = interface_stats;
- dev->set_mac_address = interface_set_mac_addr;
- dev->change_mtu = interface_change_mtu;
- dev->hard_start_xmit = interface_tx;
-#endif
- dev->destructor = free_netdev;
-
- dev->mtu = hardif_min_mtu();
- dev->hard_header_len = BAT_HEADER_LEN; /* reserve more space in the
- * skbuff for our header */
-
- /* generate random address */
- random_ether_addr(dev_addr);
- memcpy(dev->dev_addr, dev_addr, sizeof(dev->dev_addr));
-
- SET_ETHTOOL_OPS(dev, &bat_ethtool_ops);
-
- memset(priv, 0, sizeof(struct bat_priv));
-}
-
-int interface_open(struct net_device *dev)
-{
- netif_start_queue(dev);
- return 0;
-}
-
-int interface_release(struct net_device *dev)
-{
- netif_stop_queue(dev);
- return 0;
-}
-
-struct net_device_stats *interface_stats(struct net_device *dev)
-{
- struct bat_priv *priv = netdev_priv(dev);
- return &priv->stats;
-}
-
-int interface_set_mac_addr(struct net_device *dev, void *addr)
-{
- return -EBUSY;
-}
-
-int interface_change_mtu(struct net_device *dev, int new_mtu)
-{
- /* check ranges */
- if ((new_mtu < 68) || (new_mtu > hardif_min_mtu()))
- return -EINVAL;
-
- dev->mtu = new_mtu;
-
- return 0;
-}
-
-int interface_tx(struct sk_buff *skb, struct net_device *dev)
-{
- struct unicast_packet *unicast_packet;
- struct bcast_packet *bcast_packet;
- struct orig_node *orig_node;
- struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
- struct bat_priv *priv = netdev_priv(dev);
- int data_len = skb->len;
-
- if (atomic_read(&module_state) != MODULE_ACTIVE)
- goto dropped;
-
- dev->trans_start = jiffies;
- /* TODO: check this for locks */
- hna_local_add(ethhdr->h_source);
-
- /* ethernet packet should be broadcasted */
- if (is_bcast(ethhdr->h_dest) || is_mcast(ethhdr->h_dest)) {
-
- if (my_skb_push(skb, sizeof(struct bcast_packet)) < 0)
- goto dropped;
-
- bcast_packet = (struct bcast_packet *)skb->data;
-
- bcast_packet->version = COMPAT_VERSION;
-
- /* batman packet type: broadcast */
- bcast_packet->packet_type = BAT_BCAST;
-
- /* 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);
-
- /* 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;
- }
-
- /* get routing information */
- orig_node = ((struct orig_node *)hash_find(orig_hash,
- ethhdr->h_dest));
-
- /* check for hna host */
- if (!orig_node)
- orig_node = transtable_search(ethhdr->h_dest);
-
- if ((orig_node) &&
- (orig_node->batman_if) &&
- (orig_node->router)) {
- if (my_skb_push(skb, sizeof(struct unicast_packet)) < 0)
- goto unlock;
-
- unicast_packet = (struct unicast_packet *)skb->data;
-
- unicast_packet->version = COMPAT_VERSION;
- /* batman packet type: unicast */
- unicast_packet->packet_type = BAT_UNICAST;
- /* set unicast ttl */
- unicast_packet->ttl = TTL;
- /* copy the destination for faster routing */
- memcpy(unicast_packet->dest, orig_node->orig, ETH_ALEN);
-
- /* net_dev won't be available when not active */
- 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);
- } else {
- goto unlock;
- }
-
- spin_unlock(&orig_hash_lock);
- }
-
- priv->stats.tx_packets++;
- priv->stats.tx_bytes += data_len;
- goto end;
-
-unlock:
- spin_unlock(&orig_hash_lock);
-dropped:
- priv->stats.tx_dropped++;
-end:
- kfree_skb(skb);
- return 0;
-}
-
-void interface_rx(struct net_device *dev, void *packet, int packet_len)
-{
- struct sk_buff *skb;
- struct bat_priv *priv = netdev_priv(dev);
-
- skb = dev_alloc_skb(packet_len);
-
- if (!skb) {
- priv->stats.rx_dropped++;
- goto out;
- }
-
- 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;
-
- priv->stats.rx_packets++;
- priv->stats.rx_bytes += packet_len;
-
- dev->last_rx = jiffies;
-
- netif_rx(skb);
-
-out:
- return;
-}
-
-/* ethtool */
-static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- cmd->supported = 0;
- cmd->advertising = 0;
- cmd->speed = SPEED_10;
- cmd->duplex = DUPLEX_FULL;
- cmd->port = PORT_TP;
- cmd->phy_address = 0;
- cmd->transceiver = XCVR_INTERNAL;
- cmd->autoneg = AUTONEG_DISABLE;
- cmd->maxtxpkt = 0;
- cmd->maxrxpkt = 0;
-
- return 0;
-}
-
-static void bat_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- strcpy(info->driver, "B.A.T.M.A.N. advanced");
- strcpy(info->version, SOURCE_VERSION);
- strcpy(info->fw_version, "N/A");
- strcpy(info->bus_info, "batman");
-}
-
-static u32 bat_get_msglevel(struct net_device *dev)
-{
- return -EOPNOTSUPP;
-}
-
-static void bat_set_msglevel(struct net_device *dev, u32 value)
-{
- return;
-}
-
-static u32 bat_get_link(struct net_device *dev)
-{
- return 1;
-}
-
-static u32 bat_get_rx_csum(struct net_device *dev)
-{
- return 0;
-}
-
-static int bat_set_rx_csum(struct net_device *dev, u32 data)
-{
- return -EOPNOTSUPP;
-}