From: Jesse Brandeburg Date: Tue, 8 Jul 2008 22:52:02 +0000 (-0700) Subject: ixgb: add copybreak parameter X-Git-Tag: v2.6.27-rc1~969^2~146^2~30 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=d9fed18bf9090bd0682f3c611c40261a98a2842d;p=~emulex%2Finfiniband.git ixgb: add copybreak parameter copybreak code was already in the driver, allow the user to turn it off if they don't like it. Signed-off-by: Jesse Brandeburg Signed-off-by: Jeff Kirsher Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c index bd08e199214..4e422c4cbe8 100644 --- a/drivers/net/ixgb/ixgb_main.c +++ b/drivers/net/ixgb/ixgb_main.c @@ -40,6 +40,12 @@ static char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver"; const char ixgb_driver_version[] = DRV_VERSION; static const char ixgb_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; +#define IXGB_CB_LENGTH 256 +static unsigned int copybreak __read_mostly = IXGB_CB_LENGTH; +module_param(copybreak, uint, 0644); +MODULE_PARM_DESC(copybreak, + "Maximum size of packet that is copied to a new buffer on receive"); + /* ixgb_pci_tbl - PCI Device ID Table * * Wildcard entries (PCI_ANY_ID) should come last @@ -1976,8 +1982,7 @@ ixgb_clean_rx_irq(struct ixgb_adapter *adapter) /* code added for copybreak, this should improve * performance for small packets with large amounts * of reassembly being done in the stack */ -#define IXGB_CB_LENGTH 256 - if (length < IXGB_CB_LENGTH) { + if (length < copybreak) { struct sk_buff *new_skb = netdev_alloc_skb(netdev, length + NET_IP_ALIGN); if (new_skb) {