diff options
Diffstat (limited to 'drivers/staging/batman-adv/soft-interface.c')
| -rw-r--r-- | drivers/staging/batman-adv/soft-interface.c | 349 |
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; -} |
