e70171957a
This patch removes the (ugly and racy) packet receiving thread and the kernel socket usage. Instead, packets are received directly by registering the ethernet type and handling skbs instead of self-allocated buffers. Some consequences and comments: * we don't copy the payload data when forwarding/sending/receiving data anymore. This should boost performance. * packets from/to different interfaces can be (theoretically) processed simultaneously. Only the big originator hash lock might be in the way. * no more polling or sleeping/wakeup/scheduling issues when receiving packets * this might introduce new race conditions. * aggregation and vis code still use packet buffers and are not (yet) converted. * all spinlocks were converted to irqsave/restore versions to solve some lifelock issues when preempted. This might be overkill, some of these locks might be reverted later. * skb copies are only done if neccesary to avoid overhead performance differences: * we made some "benchmarks" with intel laptops. * bandwidth on Gigabit Ethernet increased from ~500 MBit/s to ~920 MBit/s * ping latency decresed from ~2ms to ~0.2 ms I did some tests on my 9 node qemu environment and could confirm that usual sending/receiving, forwarding, vis, batctl ping etc works. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Acked-by: Sven Eckelmann <sven.eckelmann@gmx.de> Acked-by: Marek Lindner <lindner_marek@yahoo.de> Acked-by: Linus Lüssing <linus.luessing@web.de> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
35 lines
1.3 KiB
C
35 lines
1.3 KiB
C
/*
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* Copyright (C) 2007-2009 B.A.T.M.A.N. contributors:
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*
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* Marek Lindner
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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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void set_main_if_addr(uint8_t *addr);
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int main_if_was_up(void);
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void interface_setup(struct net_device *dev);
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int interface_open(struct net_device *dev);
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int interface_release(struct net_device *dev);
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struct net_device_stats *interface_stats(struct net_device *dev);
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int interface_set_mac_addr(struct net_device *dev, void *addr);
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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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void interface_rx(struct sk_buff *skb, int hdr_size);
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int my_skb_push(struct sk_buff *skb, unsigned int len);
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extern unsigned char mainIfAddr[];
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