src/patches/suse-2.6.27.31/patches.drivers/netxen-revert-jumbo-ringsize.patch

   1 From e125646ab56b490d0390b158e0afa9cccfc1f897 Mon Sep 17 00:00:00 2001
   2 From: Dhananjay Phadke <dhananjay@netxen.com>
   3 Date: Thu, 29 Jan 2009 16:05:19 -0800
   4 Subject: netxen: revert jumbo ringsize
   5 Acked-by: Karsten Keil <kkeil@novell.com>
   6 Reference: bnc#472416
   7
   8 Reducing jumbo ring size below 1024 reduces throughput for old
   9 firmwares (3.4.216 and older) running on older (NX2031) chip,
  10 so restore it back to 1024.
  11
  12 This was reduced in commit 32ec803348b4d5f1353e1d7feae30880b8b3e342
  13 ("netxen: reduce memory footprint").
  14
  15 Raising jumbo ring size from 512 to 1024, adds ~4MB per port, but
  16 there's still big saving because of original patch (~20MB per port).
  17
  18 Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
  19 Signed-off-by: David S. Miller <davem@davemloft.net>
  20 ---
  21  drivers/net/netxen/netxen_nic.h |    2 +-
  22  1 files changed, 1 insertions(+), 1 deletions(-)
  23
  24 diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
  25 index a75a310..9c78c96 100644
  26 --- a/drivers/net/netxen/netxen_nic.h
  27 +++ b/drivers/net/netxen/netxen_nic.h
  28 @@ -210,7 +210,7 @@
  29  #define MAX_CMD_DESCRIPTORS_HOST       1024
  30  #define MAX_RCV_DESCRIPTORS_1G         2048
  31  #define MAX_RCV_DESCRIPTORS_10G                4096
  32 -#define MAX_JUMBO_RCV_DESCRIPTORS      512
  33 +#define MAX_JUMBO_RCV_DESCRIPTORS      1024
  34  #define MAX_LRO_RCV_DESCRIPTORS                8
  35  #define MAX_RCVSTATUS_DESCRIPTORS      MAX_RCV_DESCRIPTORS
  36  #define MAX_JUMBO_RCV_DESC     MAX_JUMBO_RCV_DESCRIPTORS
  37 --
  38 1.5.6.4
  39