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Commit cd7c7ec3 authored by Thomas Falcon's avatar Thomas Falcon Committed by David S. Miller
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ibmveth: change rx buffer default allocation for CMO 



This patch enables 64k rx buffer pools by default.  If Cooperative
Memory Overcommitment (CMO) is enabled, the number of 64k buffers
is reduced to save memory.

Cc: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: default avatarThomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 79c9cc3c

drivers/net/ethernet/ibm/ibmveth.c

+3 −0
Original line number Diff line number Diff line
@@ -1424,6 +1424,9 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) 


	memcpy(netdev->dev_addr, mac_addr_p, ETH_ALEN);



	if (firmware_has_feature(FW_FEATURE_CMO))

		memcpy(pool_count, pool_count_cmo, sizeof(pool_count));



	for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) {

		struct kobject *kobj = &adapter->rx_buff_pool[i].kobj;

		int error;

drivers/net/ethernet/ibm/ibmveth.h

+2 −1
Original line number Diff line number Diff line
@@ -104,7 +104,8 @@ static inline long h_illan_attributes(unsigned long unit_address, 


static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };

static int pool_count[] = { 256, 512, 256, 256, 256 };

static int pool_active[] = { 1, 1, 0, 0, 0};

static int pool_count_cmo[] = { 256, 512, 256, 256, 64 };

static int pool_active[] = { 1, 1, 0, 0, 1};



#define IBM_VETH_INVALID_MAP ((u16)0xffff)