AcoSail/kernel_optimize_test
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ipwireless: Preallocate received packet buffers with MRU size

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ipwireless: Preallocate received packet buffers with MRU size

Packets are assembled from link size (~300 bytes) up to PPP MRU
(1500 by default). Try to preallocate full size rather than
repeatedly advance buffer size by 256 bytes.

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Sterba 2008-07-28 16:53:32 +02:00 committed by Linus Torvalds
parent 0f38c47a54
commit a013869248
3 changed files with 8 additions and 1 deletions
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3
drivers/char/pcmcia/ipwireless/hardware.c
View File

@ -567,7 +567,8 @@ static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw,
spin_unlock_irqrestore(&hw->lock, flags);
list_del(&packet->queue);
} else {
static int min_capacity = 256;
const int min_capacity =
ipwireless_ppp_mru(hw->network + 2);
int new_capacity;
spin_unlock_irqrestore(&hw->lock, flags);

5
drivers/char/pcmcia/ipwireless/network.c
View File

@ -499,3 +499,8 @@ int ipwireless_ppp_unit_number(struct ipw_network *network)
return ret;
}
int ipwireless_ppp_mru(const struct ipw_network *network)
{
return network->mru;
}

1
drivers/char/pcmcia/ipwireless/network.h
View File

@ -48,5 +48,6 @@ void ipwireless_ppp_open(struct ipw_network *net);
void ipwireless_ppp_close(struct ipw_network *net);
int ipwireless_ppp_channel_index(struct ipw_network *net);
int ipwireless_ppp_unit_number(struct ipw_network *net);
int ipwireless_ppp_mru(const struct ipw_network *net);
#endif