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ibmveth: change rx buffer default allocation for CMO

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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: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Falcon 2015-04-29 16:25:44 -05:00 committed by David S. Miller
parent 79c9cc3cd0
commit cd7c7ec368
2 changed files with 5 additions and 1 deletions
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3
drivers/net/ethernet/ibm/ibmveth.c
View File

@ -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;

3
drivers/net/ethernet/ibm/ibmveth.h
View File

@ -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)