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Commit a0138692 authored by David Sterba's avatar David Sterba Committed by Linus Torvalds
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ipwireless: Preallocate received packet buffers with MRU size 



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: default avatarDavid Sterba <dsterba@suse.cz>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 0f38c47a

drivers/char/pcmcia/ipwireless/hardware.c

+2 −1
Original line number Diff line number Diff line
@@ -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);

drivers/char/pcmcia/ipwireless/network.c

+5 −0
Original line number Diff line number Diff line
@@ -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;

}

drivers/char/pcmcia/ipwireless/network.h

+1 −0
Original line number Diff line number Diff line
@@ -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