Staging: batman-adv: refactoring unicast payload code
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> [sven.eckelmann@gmx.de: Rework on top of current version] Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Marek Lindner
Greg Kroah-Hartman
parent
7d02674f71
commit
24c76fc07b
4 changed files with 128 additions and 62 deletions
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@ -19,4 +19,4 @@
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#
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obj-$(CONFIG_BATMAN_ADV) += batman-adv.o
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batman-adv-objs := main.o bat_debugfs.o bat_sysfs.o send.o routing.o soft-interface.o icmp_socket.o translation-table.o bitarray.o hash.o ring_buffer.o vis.o hard-interface.o aggregation.o originator.o
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batman-adv-objs := main.o bat_debugfs.o bat_sysfs.o send.o routing.o soft-interface.o icmp_socket.o translation-table.o bitarray.o hash.o ring_buffer.o vis.o hard-interface.o aggregation.o originator.o unicast.o
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@ -22,14 +22,12 @@
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#include "main.h"
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#include "soft-interface.h"
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#include "hard-interface.h"
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#include "routing.h"
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#include "send.h"
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#include "translation-table.h"
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#include "types.h"
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#include "hash.h"
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#include "send.h"
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#include <linux/slab.h>
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#include <linux/ethtool.h>
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#include <linux/etherdevice.h>
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#include "unicast.h"
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static uint32_t bcast_seqno = 1; /* give own bcast messages seq numbers to avoid
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* broadcast storms */
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@ -127,24 +125,14 @@ static int interface_change_mtu(struct net_device *dev, int new_mtu)
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int interface_tx(struct sk_buff *skb, struct net_device *dev)
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{
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struct unicast_packet *unicast_packet;
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struct bcast_packet *bcast_packet;
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struct orig_node *orig_node;
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struct neigh_node *router;
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struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
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struct bat_priv *priv = netdev_priv(dev);
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struct batman_if *batman_if;
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struct bat_priv *bat_priv;
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uint8_t dstaddr[6];
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int data_len = skb->len;
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unsigned long flags;
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struct bat_priv *bat_priv = netdev_priv(dev);
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struct bcast_packet *bcast_packet;
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int data_len = skb->len, ret;
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if (atomic_read(&module_state) != MODULE_ACTIVE)
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goto dropped;
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/* FIXME: each batman_if will be attached to a softif */
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bat_priv = netdev_priv(soft_device);
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dev->trans_start = jiffies;
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/* TODO: check this for locks */
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hna_local_add(ethhdr->h_source);
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@ -179,55 +167,19 @@ int interface_tx(struct sk_buff *skb, struct net_device *dev)
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/* unicast packet */
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} else {
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spin_lock_irqsave(&orig_hash_lock, flags);
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/* get routing information */
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orig_node = ((struct orig_node *)hash_find(orig_hash,
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ethhdr->h_dest));
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/* check for hna host */
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if (!orig_node)
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orig_node = transtable_search(ethhdr->h_dest);
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router = find_router(orig_node, NULL);
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if (!router)
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goto unlock;
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/* don't lock while sending the packets ... we therefore
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* copy the required data before sending */
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batman_if = router->if_incoming;
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memcpy(dstaddr, router->addr, ETH_ALEN);
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spin_unlock_irqrestore(&orig_hash_lock, flags);
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if (batman_if->if_status != IF_ACTIVE)
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goto dropped;
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if (my_skb_push(skb, sizeof(struct unicast_packet)) < 0)
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goto dropped;
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unicast_packet = (struct unicast_packet *)skb->data;
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unicast_packet->version = COMPAT_VERSION;
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/* batman packet type: unicast */
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unicast_packet->packet_type = BAT_UNICAST;
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/* set unicast ttl */
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unicast_packet->ttl = TTL;
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/* copy the destination for faster routing */
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memcpy(unicast_packet->dest, orig_node->orig, ETH_ALEN);
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send_skb_packet(skb, batman_if, dstaddr);
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ret = unicast_send_skb(skb, bat_priv);
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if (ret != 0) {
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bat_priv->stats.tx_dropped++;
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goto end;
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}
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}
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priv->stats.tx_packets++;
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priv->stats.tx_bytes += data_len;
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bat_priv->stats.tx_packets++;
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bat_priv->stats.tx_bytes += data_len;
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goto end;
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unlock:
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spin_unlock_irqrestore(&orig_hash_lock, flags);
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dropped:
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priv->stats.tx_dropped++;
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bat_priv->stats.tx_dropped++;
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kfree_skb(skb);
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end:
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return NETDEV_TX_OK;
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87
drivers/staging/batman-adv/unicast.c
Normal file
87
drivers/staging/batman-adv/unicast.c
Normal file
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@ -0,0 +1,87 @@
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/*
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* Copyright (C) 2010 B.A.T.M.A.N. contributors:
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*
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* Andreas Langer
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*
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*/
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#include "main.h"
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#include "unicast.h"
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#include "send.h"
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#include "soft-interface.h"
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#include "hash.h"
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#include "translation-table.h"
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#include "routing.h"
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#include "hard-interface.h"
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int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv)
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{
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struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
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struct unicast_packet *unicast_packet;
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struct orig_node *orig_node;
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struct batman_if *batman_if;
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struct neigh_node *router;
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uint8_t dstaddr[6];
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unsigned long flags;
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spin_lock_irqsave(&orig_hash_lock, flags);
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/* get routing information */
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orig_node = ((struct orig_node *)hash_find(orig_hash, ethhdr->h_dest));
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/* check for hna host */
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if (!orig_node)
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orig_node = transtable_search(ethhdr->h_dest);
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router = find_router(orig_node, NULL);
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if (!router)
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goto unlock;
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/* don't lock while sending the packets ... we therefore
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* copy the required data before sending */
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batman_if = router->if_incoming;
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memcpy(dstaddr, router->addr, ETH_ALEN);
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spin_unlock_irqrestore(&orig_hash_lock, flags);
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if (batman_if->if_status != IF_ACTIVE)
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goto dropped;
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if (my_skb_push(skb, sizeof(struct unicast_packet)) < 0)
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goto dropped;
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unicast_packet = (struct unicast_packet *)skb->data;
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unicast_packet->version = COMPAT_VERSION;
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/* batman packet type: unicast */
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unicast_packet->packet_type = BAT_UNICAST;
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/* set unicast ttl */
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unicast_packet->ttl = TTL;
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/* copy the destination for faster routing */
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memcpy(unicast_packet->dest, orig_node->orig, ETH_ALEN);
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send_skb_packet(skb, batman_if, dstaddr);
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return 0;
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unlock:
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spin_unlock_irqrestore(&orig_hash_lock, flags);
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dropped:
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kfree_skb(skb);
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return 1;
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}
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27
drivers/staging/batman-adv/unicast.h
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27
drivers/staging/batman-adv/unicast.h
Normal file
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@ -0,0 +1,27 @@
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/*
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* Copyright (C) 2010 B.A.T.M.A.N. contributors:
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*
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* Andreas Langer
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*
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*/
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#ifndef _NET_BATMAN_ADV_UNICAST_H_
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#define _NET_BATMAN_ADV_UNICAST_H_
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int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv);
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#endif /* _NET_BATMAN_ADV_UNICAST_H_ */
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