diff options
Diffstat (limited to 'drivers/staging/batman-adv/soft-interface.c')
| -rw-r--r-- | drivers/staging/batman-adv/soft-interface.c | 392 |
1 files changed, 0 insertions, 392 deletions
diff --git a/drivers/staging/batman-adv/soft-interface.c b/drivers/staging/batman-adv/soft-interface.c deleted file mode 100644 index 3904db9ce7b..00000000000 --- a/drivers/staging/batman-adv/soft-interface.c +++ /dev/null @@ -1,392 +0,0 @@ -/* - * Copyright (C) 2007-2010 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 "routing.h" -#include "send.h" -#include "bat_debugfs.h" -#include "translation-table.h" -#include "types.h" -#include "hash.h" -#include "send.h" -#include "bat_sysfs.h" -#include <linux/slab.h> -#include <linux/ethtool.h> -#include <linux/etherdevice.h> -#include "unicast.h" - - -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 -}; - -int my_skb_head_push(struct sk_buff *skb, unsigned int len) -{ - int result; - - /** - * TODO: We must check if we can release all references to non-payload - * data using skb_header_release in our skbs to allow skb_cow_header to - * work optimally. This means that those skbs are not allowed to read - * or write any data which is before the current position of skb->data - * after that call and thus allow other skbs with the same data buffer - * to write freely in that area. - */ - result = skb_cow_head(skb, len); - if (result < 0) - return result; - - skb_push(skb, len); - return 0; -} - -static int interface_open(struct net_device *dev) -{ - netif_start_queue(dev); - return 0; -} - -static int interface_release(struct net_device *dev) -{ - netif_stop_queue(dev); - return 0; -} - -static struct net_device_stats *interface_stats(struct net_device *dev) -{ - struct bat_priv *bat_priv = netdev_priv(dev); - return &bat_priv->stats; -} - -static int interface_set_mac_addr(struct net_device *dev, void *p) -{ - struct bat_priv *bat_priv = netdev_priv(dev); - struct sockaddr *addr = p; - - if (!is_valid_ether_addr(addr->sa_data)) - return -EADDRNOTAVAIL; - - /* only modify hna-table if it has been initialised before */ - if (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) { - hna_local_remove(bat_priv, dev->dev_addr, - "mac address changed"); - hna_local_add(dev, addr->sa_data); - } - - memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); - - return 0; -} - -static int interface_change_mtu(struct net_device *dev, int new_mtu) -{ - /* check ranges */ - if ((new_mtu < 68) || (new_mtu > hardif_min_mtu(dev))) - return -EINVAL; - - dev->mtu = new_mtu; - - return 0; -} - -int interface_tx(struct sk_buff *skb, struct net_device *soft_iface) -{ - struct ethhdr *ethhdr = (struct ethhdr *)skb->data; - struct bat_priv *bat_priv = netdev_priv(soft_iface); - struct bcast_packet *bcast_packet; - int data_len = skb->len, ret; - - if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE) - goto dropped; - - soft_iface->trans_start = jiffies; - - /* TODO: check this for locks */ - hna_local_add(soft_iface, ethhdr->h_source); - - /* ethernet packet should be broadcasted */ - if (is_bcast(ethhdr->h_dest) || is_mcast(ethhdr->h_dest)) { - if (!bat_priv->primary_if) - goto dropped; - - if (my_skb_head_push(skb, sizeof(struct bcast_packet)) < 0) - goto dropped; - - bcast_packet = (struct bcast_packet *)skb->data; - bcast_packet->version = COMPAT_VERSION; - bcast_packet->ttl = TTL; - - /* 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, - bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN); - - /* set broadcast sequence number */ - bcast_packet->seqno = - htonl(atomic_inc_return(&bat_priv->bcast_seqno)); - - add_bcast_packet_to_list(bat_priv, skb); - - /* a copy is stored in the bcast list, therefore removing - * the original skb. */ - kfree_skb(skb); - - /* unicast packet */ - } else { - ret = unicast_send_skb(skb, bat_priv); - if (ret != 0) - goto dropped_freed; - } - - bat_priv->stats.tx_packets++; - bat_priv->stats.tx_bytes += data_len; - goto end; - -dropped: - kfree_skb(skb); -dropped_freed: - bat_priv->stats.tx_dropped++; -end: - return NETDEV_TX_OK; -} - -void interface_rx(struct net_device *soft_iface, - struct sk_buff *skb, int hdr_size) -{ - struct bat_priv *priv = netdev_priv(soft_iface); - - /* 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));*/ - - /* skb->dev & skb->pkt_type are set here */ - skb->protocol = eth_type_trans(skb, soft_iface); - - /* 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;*/ - - priv->stats.rx_packets++; - priv->stats.rx_bytes += skb->len + sizeof(struct ethhdr); - - soft_iface->last_rx = jiffies; - - netif_rx(skb); -} - -#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 - -static 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; - - /** - * can't call min_mtu, because the needed variables - * have not been initialized yet - */ - dev->mtu = ETH_DATA_LEN; - 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, ETH_ALEN); - - SET_ETHTOOL_OPS(dev, &bat_ethtool_ops); - - memset(priv, 0, sizeof(struct bat_priv)); -} - -struct net_device *softif_create(char *name) -{ - struct net_device *soft_iface; - struct bat_priv *bat_priv; - int ret; - - soft_iface = alloc_netdev(sizeof(struct bat_priv) , name, - interface_setup); - - if (!soft_iface) { - pr_err("Unable to allocate the batman interface: %s\n", name); - goto out; - } - - ret = register_netdev(soft_iface); - if (ret < 0) { - pr_err("Unable to register the batman interface '%s': %i\n", - name, ret); - goto free_soft_iface; - } - - bat_priv = netdev_priv(soft_iface); - - atomic_set(&bat_priv->aggregation_enabled, 1); - atomic_set(&bat_priv->bonding_enabled, 0); - atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE); - atomic_set(&bat_priv->orig_interval, 1000); - atomic_set(&bat_priv->log_level, 0); - atomic_set(&bat_priv->frag_enabled, 1); - atomic_set(&bat_priv->bcast_queue_left, BCAST_QUEUE_LEN); - atomic_set(&bat_priv->batman_queue_left, BATMAN_QUEUE_LEN); - - atomic_set(&bat_priv->mesh_state, MESH_INACTIVE); - atomic_set(&bat_priv->bcast_seqno, 1); - atomic_set(&bat_priv->hna_local_changed, 0); - - bat_priv->primary_if = NULL; - bat_priv->num_ifaces = 0; - - ret = sysfs_add_meshif(soft_iface); - if (ret < 0) - goto unreg_soft_iface; - - ret = debugfs_add_meshif(soft_iface); - if (ret < 0) - goto unreg_sysfs; - - ret = mesh_init(soft_iface); - if (ret < 0) - goto unreg_debugfs; - - return soft_iface; - -unreg_debugfs: - debugfs_del_meshif(soft_iface); -unreg_sysfs: - sysfs_del_meshif(soft_iface); -unreg_soft_iface: - unregister_netdev(soft_iface); - return NULL; - -free_soft_iface: - free_netdev(soft_iface); -out: - return NULL; -} - -void softif_destroy(struct net_device *soft_iface) -{ - debugfs_del_meshif(soft_iface); - sysfs_del_meshif(soft_iface); - mesh_free(soft_iface); - unregister_netdevice(soft_iface); -} - -/* 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) -{ -} - -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; -} |