src/patches/suse-2.6.27.39/patches.drivers/netxen-reduce-memory-footprint.patch

   1 From 32ec803348b4d5f1353e1d7feae30880b8b3e342 Mon Sep 17 00:00:00 2001
   2 From: Dhananjay Phadke <dhananjay@netxen.com>
   3 Date: Mon, 26 Jan 2009 12:35:19 -0800
   4 Subject: netxen: reduce memory footprint
   5 Acked-by: Karsten Keil <kkeil@novell.com>
   6 Reference: bnc#472416
   7
   8 o reduce rx ring size from 8192 to 4096.
   9 o cut down old huge lro buffers.
  10
  11 Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
  12 Signed-off-by: David S. Miller <davem@davemloft.net>
  13 ---
  14  drivers/net/netxen/netxen_nic.h         |   12 ++++++------
  15  drivers/net/netxen/netxen_nic_ethtool.c |    5 ++++-
  16  2 files changed, 10 insertions(+), 7 deletions(-)
  17
  18 diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
  19 index c11c568..a75a310 100644
  20 --- a/drivers/net/netxen/netxen_nic.h
  21 +++ b/drivers/net/netxen/netxen_nic.h
  22 @@ -146,7 +146,7 @@
  23
  24  #define MAX_RX_BUFFER_LENGTH           1760
  25  #define MAX_RX_JUMBO_BUFFER_LENGTH     8062
  26 -#define MAX_RX_LRO_BUFFER_LENGTH       ((48*1024)-512)
  27 +#define MAX_RX_LRO_BUFFER_LENGTH       (8062)
  28  #define RX_DMA_MAP_LEN                 (MAX_RX_BUFFER_LENGTH - 2)
  29  #define RX_JUMBO_DMA_MAP_LEN   \
  30         (MAX_RX_JUMBO_BUFFER_LENGTH - 2)
  31 @@ -207,11 +207,11 @@
  32
  33  #define MAX_CMD_DESCRIPTORS            4096
  34  #define MAX_RCV_DESCRIPTORS            16384
  35 -#define MAX_CMD_DESCRIPTORS_HOST       (MAX_CMD_DESCRIPTORS / 4)
  36 -#define MAX_RCV_DESCRIPTORS_1G         (MAX_RCV_DESCRIPTORS / 4)
  37 -#define MAX_RCV_DESCRIPTORS_10G                8192
  38 -#define MAX_JUMBO_RCV_DESCRIPTORS      1024
  39 -#define MAX_LRO_RCV_DESCRIPTORS                64
  40 +#define MAX_CMD_DESCRIPTORS_HOST       1024
  41 +#define MAX_RCV_DESCRIPTORS_1G         2048
  42 +#define MAX_RCV_DESCRIPTORS_10G                4096
  43 +#define MAX_JUMBO_RCV_DESCRIPTORS      512
  44 +#define MAX_LRO_RCV_DESCRIPTORS                8
  45  #define MAX_RCVSTATUS_DESCRIPTORS      MAX_RCV_DESCRIPTORS
  46  #define MAX_JUMBO_RCV_DESC     MAX_JUMBO_RCV_DESCRIPTORS
  47  #define MAX_RCV_DESC           MAX_RCV_DESCRIPTORS
  48 diff --git a/drivers/net/netxen/netxen_nic_ethtool.c b/drivers/net/netxen/netxen_nic_ethtool.c
  49 index c0bd40f..0894a7b 100644
  50 --- a/drivers/net/netxen/netxen_nic_ethtool.c
  51 +++ b/drivers/net/netxen/netxen_nic_ethtool.c
  52 @@ -561,7 +561,10 @@ netxen_nic_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring)
  53         }
  54         ring->tx_pending = adapter->max_tx_desc_count;
  55
  56 -       ring->rx_max_pending = MAX_RCV_DESCRIPTORS;
  57 +       if (adapter->ahw.board_type == NETXEN_NIC_GBE)
  58 +               ring->rx_max_pending = MAX_RCV_DESCRIPTORS_1G;
  59 +       else
  60 +               ring->rx_max_pending = MAX_RCV_DESCRIPTORS_10G;
  61         ring->tx_max_pending = MAX_CMD_DESCRIPTORS_HOST;
  62         ring->rx_jumbo_max_pending = MAX_JUMBO_RCV_DESCRIPTORS;
  63         ring->rx_mini_max_pending = 0;
  64 --
  65 1.5.6.4
  66