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: David Sterba <dsterba@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/pcmcia/ipwireless/hardware.c b/drivers/char/pcmcia/ipwireless/hardware.c
index d1e69de..7d500f8 100644
--- a/drivers/char/pcmcia/ipwireless/hardware.c
+++ b/drivers/char/pcmcia/ipwireless/hardware.c
@@ -567,7 +567,8 @@
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);
diff --git a/drivers/char/pcmcia/ipwireless/network.c b/drivers/char/pcmcia/ipwireless/network.c
index 2b07af0..590762a 100644
--- a/drivers/char/pcmcia/ipwireless/network.c
+++ b/drivers/char/pcmcia/ipwireless/network.c
@@ -499,3 +499,8 @@
return ret;
}
+
+int ipwireless_ppp_mru(const struct ipw_network *network)
+{
+ return network->mru;
+}
diff --git a/drivers/char/pcmcia/ipwireless/network.h b/drivers/char/pcmcia/ipwireless/network.h
index ccacd26..561f765 100644
--- a/drivers/char/pcmcia/ipwireless/network.h
+++ b/drivers/char/pcmcia/ipwireless/network.h
@@ -48,5 +48,6 @@
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