From 24c76fc07b7680536fa372905f16b57a45c0d514 Mon Sep 17 00:00:00 2001 From: Marek Lindner Date: Sun, 5 Sep 2010 01:58:24 +0200 Subject: [PATCH] Staging: batman-adv: refactoring unicast payload code Signed-off-by: Marek Lindner [sven.eckelmann@gmx.de: Rework on top of current version] Signed-off-by: Sven Eckelmann Signed-off-by: Greg Kroah-Hartman --- drivers/staging/batman-adv/Makefile | 2 +- drivers/staging/batman-adv/soft-interface.c | 74 +++++------------------- drivers/staging/batman-adv/unicast.c | 87 +++++++++++++++++++++++++++++ drivers/staging/batman-adv/unicast.h | 27 +++++++++ 4 files changed, 128 insertions(+), 62 deletions(-) create mode 100644 drivers/staging/batman-adv/unicast.c create mode 100644 drivers/staging/batman-adv/unicast.h diff --git a/drivers/staging/batman-adv/Makefile b/drivers/staging/batman-adv/Makefile index e9817b5..4b5c434 100644 --- a/drivers/staging/batman-adv/Makefile +++ b/drivers/staging/batman-adv/Makefile @@ -19,4 +19,4 @@ # obj-$(CONFIG_BATMAN_ADV) += batman-adv.o -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 +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 diff --git a/drivers/staging/batman-adv/soft-interface.c b/drivers/staging/batman-adv/soft-interface.c index 6f22e6e..315fdeb 100644 --- a/drivers/staging/batman-adv/soft-interface.c +++ b/drivers/staging/batman-adv/soft-interface.c @@ -22,14 +22,12 @@ #include "main.h" #include "soft-interface.h" #include "hard-interface.h" -#include "routing.h" -#include "send.h" #include "translation-table.h" -#include "types.h" -#include "hash.h" +#include "send.h" #include #include #include +#include "unicast.h" static uint32_t bcast_seqno = 1; /* give own bcast messages seq numbers to avoid * broadcast storms */ @@ -127,24 +125,14 @@ static int interface_change_mtu(struct net_device *dev, int new_mtu) 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 neigh_node *router; struct ethhdr *ethhdr = (struct ethhdr *)skb->data; - struct bat_priv *priv = netdev_priv(dev); - struct batman_if *batman_if; - struct bat_priv *bat_priv; - uint8_t dstaddr[6]; - int data_len = skb->len; - unsigned long flags; + struct bat_priv *bat_priv = netdev_priv(dev); + struct bcast_packet *bcast_packet; + int data_len = skb->len, ret; if (atomic_read(&module_state) != MODULE_ACTIVE) goto dropped; - /* FIXME: each batman_if will be attached to a softif */ - bat_priv = netdev_priv(soft_device); - dev->trans_start = jiffies; /* TODO: check this for locks */ hna_local_add(ethhdr->h_source); @@ -179,55 +167,19 @@ int interface_tx(struct sk_buff *skb, struct net_device *dev) /* unicast packet */ } else { - spin_lock_irqsave(&orig_hash_lock, flags); - /* 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); - - router = find_router(orig_node, NULL); - - if (!router) - goto unlock; - - /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - - batman_if = router->if_incoming; - memcpy(dstaddr, router->addr, ETH_ALEN); - - spin_unlock_irqrestore(&orig_hash_lock, flags); - - if (batman_if->if_status != IF_ACTIVE) - goto dropped; - - if (my_skb_push(skb, sizeof(struct unicast_packet)) < 0) - goto dropped; - - 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); - - send_skb_packet(skb, batman_if, dstaddr); + ret = unicast_send_skb(skb, bat_priv); + if (ret != 0) { + bat_priv->stats.tx_dropped++; + goto end; + } } - priv->stats.tx_packets++; - priv->stats.tx_bytes += data_len; + bat_priv->stats.tx_packets++; + bat_priv->stats.tx_bytes += data_len; goto end; -unlock: - spin_unlock_irqrestore(&orig_hash_lock, flags); dropped: - priv->stats.tx_dropped++; + bat_priv->stats.tx_dropped++; kfree_skb(skb); end: return NETDEV_TX_OK; diff --git a/drivers/staging/batman-adv/unicast.c b/drivers/staging/batman-adv/unicast.c new file mode 100644 index 0000000..27c4abb --- /dev/null +++ b/drivers/staging/batman-adv/unicast.c @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2010 B.A.T.M.A.N. contributors: + * + * Andreas Langer + * + * 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 "unicast.h" +#include "send.h" +#include "soft-interface.h" +#include "hash.h" +#include "translation-table.h" +#include "routing.h" +#include "hard-interface.h" + +int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv) +{ + struct ethhdr *ethhdr = (struct ethhdr *)skb->data; + struct unicast_packet *unicast_packet; + struct orig_node *orig_node; + struct batman_if *batman_if; + struct neigh_node *router; + uint8_t dstaddr[6]; + unsigned long flags; + + spin_lock_irqsave(&orig_hash_lock, flags); + + /* 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); + + router = find_router(orig_node, NULL); + + if (!router) + goto unlock; + + /* don't lock while sending the packets ... we therefore + * copy the required data before sending */ + + batman_if = router->if_incoming; + memcpy(dstaddr, router->addr, ETH_ALEN); + + spin_unlock_irqrestore(&orig_hash_lock, flags); + + if (batman_if->if_status != IF_ACTIVE) + goto dropped; + + if (my_skb_push(skb, sizeof(struct unicast_packet)) < 0) + goto dropped; + + 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); + + send_skb_packet(skb, batman_if, dstaddr); + return 0; + +unlock: + spin_unlock_irqrestore(&orig_hash_lock, flags); +dropped: + kfree_skb(skb); + return 1; +} diff --git a/drivers/staging/batman-adv/unicast.h b/drivers/staging/batman-adv/unicast.h new file mode 100644 index 0000000..dd00703 --- /dev/null +++ b/drivers/staging/batman-adv/unicast.h @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2010 B.A.T.M.A.N. contributors: + * + * Andreas Langer + * + * 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 + * + */ + +#ifndef _NET_BATMAN_ADV_UNICAST_H_ +#define _NET_BATMAN_ADV_UNICAST_H_ + +int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv); + +#endif /* _NET_BATMAN_ADV_UNICAST_H_ */ -- 2.7.4