static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
{
struct ibmveth_adapter *adapter = netdev_priv(dev);
struct vio_dev *viodev = adapter->vdev;
int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH;
int i, rc;
int need_restart = 0;
if (new_mtu < IBMVETH_MIN_MTU)
return -EINVAL;
for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++)
if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size)
break;
if (i == IBMVETH_NUM_BUFF_POOLS)
return -EINVAL;
/* Deactivate all the buffer pools so that the next loop can activate
only the buffer pools necessary to hold the new MTU */
if (netif_running(adapter->netdev)) {
need_restart = 1;
adapter->pool_config = 1;
ibmveth_close(adapter->netdev);
adapter->pool_config = 0;
}
/* Look for an active buffer pool that can hold the new MTU */
for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) {
adapter->rx_buff_pool[i].active = 1;
if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) {
dev->mtu = new_mtu;
vio_cmo_set_dev_desired(viodev,
ibmveth_get_desired_dma
(viodev));
if (need_restart) {
return ibmveth_open(adapter->netdev);
}
return 0;
}
}
if (need_restart && (rc = ibmveth_open(adapter->netdev)))
return rc;
return -EINVAL;
}
static int ibmveth_set_csum_offload(struct net_device *dev, u32 data,
void (*done) (struct net_device *, u32))
{
struct ibmveth_adapter *adapter = netdev_priv(dev);
unsigned long set_attr, clr_attr, ret_attr;
long ret;
int rc1 = 0, rc2 = 0;
int restart = 0;
if (netif_running(dev)) {
restart = 1;
adapter->pool_config = 1;
ibmveth_close(dev);
adapter->pool_config = 0;
}
set_attr = 0;
clr_attr = 0;
if (data)
set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM;
else
clr_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM;
ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr);
if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) &&
!(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) &&
(ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) {
ret = h_illan_attributes(adapter->vdev->unit_address, clr_attr,
set_attr, &ret_attr);
if (ret != H_SUCCESS) {
rc1 = -EIO;
ibmveth_error_printk("unable to change checksum offload settings."
" %d rc=%ld\n", data, ret);
ret = h_illan_attributes(adapter->vdev->unit_address,
set_attr, clr_attr, &ret_attr);
} else
done(dev, data);
} else {
rc1 = -EIO;
ibmveth_error_printk("unable to change checksum offload settings."
" %d rc=%ld ret_attr=%lx\n", data, ret, ret_attr);
}
if (restart)
rc2 = ibmveth_open(dev);
return rc1 ? rc1 : rc2;
}
static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
{
struct ibmveth_adapter *adapter = netdev_priv(dev);
struct vio_dev *viodev = adapter->vdev;
int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH;
int i;
if (new_mtu < IBMVETH_MAX_MTU)
return -EINVAL;
for (i = 0; i < IbmVethNumBufferPools; i++)
if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size)
break;
if (i == IbmVethNumBufferPools)
return -EINVAL;
for (i = 0; i < IbmVethNumBufferPools; i++)
if (adapter->rx_buff_pool[i].active) {
ibmveth_free_buffer_pool(adapter,
&adapter->rx_buff_pool[i]);
adapter->rx_buff_pool[i].active = 0;
}
for(i = 0; i<IbmVethNumBufferPools; i++) {
adapter->rx_buff_pool[i].active = 1;
if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) {
if (netif_running(adapter->netdev)) {
adapter->pool_config = 1;
ibmveth_close(adapter->netdev);
adapter->pool_config = 0;
dev->mtu = new_mtu;
vio_cmo_set_dev_desired(viodev,
ibmveth_get_desired_dma
(viodev));
return ibmveth_open(adapter->netdev);
}
dev->mtu = new_mtu;
vio_cmo_set_dev_desired(viodev,
ibmveth_get_desired_dma
(viodev));
return 0;
}
}
return -EINVAL;
}
static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
{
struct ibmveth_adapter *adapter = dev->priv;
int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH;
int reinit = 0;
int i, rc;
if (new_mtu < IBMVETH_MAX_MTU)
return -EINVAL;
for (i = 0; i < IbmVethNumBufferPools; i++)
if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size)
break;
if (i == IbmVethNumBufferPools)
return -EINVAL;
/* Look for an active buffer pool that can hold the new MTU */
for(i = 0; i<IbmVethNumBufferPools; i++) {
if (!adapter->rx_buff_pool[i].active) {
adapter->rx_buff_pool[i].active = 1;
reinit = 1;
}
if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) {
if (reinit && netif_running(adapter->netdev)) {
adapter->pool_config = 1;
ibmveth_close(adapter->netdev);
adapter->pool_config = 0;
dev->mtu = new_mtu;
if ((rc = ibmveth_open(adapter->netdev)))
return rc;
} else
dev->mtu = new_mtu;
return 0;
}
}
return -EINVAL;
}
static ssize_t veth_pool_store(struct kobject * kobj, struct attribute * attr,
const char * buf, size_t count)
{
struct ibmveth_buff_pool *pool = container_of(kobj,
struct ibmveth_buff_pool,
kobj);
struct net_device *netdev = dev_get_drvdata(
container_of(kobj->parent, struct device, kobj));
struct ibmveth_adapter *adapter = netdev_priv(netdev);
long value = simple_strtol(buf, NULL, 10);
long rc;
if (attr == &veth_active_attr) {
if (value && !pool->active) {
if (netif_running(netdev)) {
if(ibmveth_alloc_buffer_pool(pool)) {
ibmveth_error_printk("unable to alloc pool\n");
return -ENOMEM;
}
pool->active = 1;
adapter->pool_config = 1;
ibmveth_close(netdev);
adapter->pool_config = 0;
if ((rc = ibmveth_open(netdev)))
return rc;
} else
pool->active = 1;
} else if (!value && pool->active) {
int mtu = netdev->mtu + IBMVETH_BUFF_OH;
int i;
for (i = 0; i < IbmVethNumBufferPools; i++) {
if (pool == &adapter->rx_buff_pool[i])
continue;
if (!adapter->rx_buff_pool[i].active)
continue;
if (mtu <= adapter->rx_buff_pool[i].buff_size)
break;
}
if (i == IbmVethNumBufferPools) {
ibmveth_error_printk("no active pool >= MTU\n");
return -EPERM;
}
if (netif_running(netdev)) {
adapter->pool_config = 1;
ibmveth_close(netdev);
pool->active = 0;
adapter->pool_config = 0;
if ((rc = ibmveth_open(netdev)))
return rc;
}
pool->active = 0;
}
} else if (attr == &veth_num_attr) {
if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT)
return -EINVAL;
else {
if (netif_running(netdev)) {
adapter->pool_config = 1;
ibmveth_close(netdev);
adapter->pool_config = 0;
pool->size = value;
if ((rc = ibmveth_open(netdev)))
return rc;
} else
pool->size = value;
}
} else if (attr == &veth_size_attr) {
if (value <= IBMVETH_BUFF_OH || value > IBMVETH_MAX_BUF_SIZE)
return -EINVAL;
else {
if (netif_running(netdev)) {
adapter->pool_config = 1;
ibmveth_close(netdev);
adapter->pool_config = 0;
pool->buff_size = value;
if ((rc = ibmveth_open(netdev)))
return rc;
} else
pool->buff_size = value;
}
}
ibmveth_interrupt(netdev->irq, netdev);
return count;
}
static int ibmveth_set_csum_offload(struct net_device *dev, u32 data)
{
struct ibmveth_adapter *adapter = netdev_priv(dev);
unsigned long set_attr, clr_attr, ret_attr;
unsigned long set_attr6, clr_attr6;
long ret, ret4, ret6;
int rc1 = 0, rc2 = 0;
int restart = 0;
if (netif_running(dev)) {
restart = 1;
adapter->pool_config = 1;
ibmveth_close(dev);
adapter->pool_config = 0;
}
set_attr = 0;
clr_attr = 0;
set_attr6 = 0;
clr_attr6 = 0;
if (data) {
set_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM;
set_attr6 = IBMVETH_ILLAN_IPV6_TCP_CSUM;
} else {
clr_attr = IBMVETH_ILLAN_IPV4_TCP_CSUM;
clr_attr6 = IBMVETH_ILLAN_IPV6_TCP_CSUM;
}
ret = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr);
if (ret == H_SUCCESS && !(ret_attr & IBMVETH_ILLAN_ACTIVE_TRUNK) &&
!(ret_attr & IBMVETH_ILLAN_TRUNK_PRI_MASK) &&
(ret_attr & IBMVETH_ILLAN_PADDED_PKT_CSUM)) {
ret4 = h_illan_attributes(adapter->vdev->unit_address, clr_attr,
set_attr, &ret_attr);
if (ret4 != H_SUCCESS) {
netdev_err(dev, "unable to change IPv4 checksum "
"offload settings. %d rc=%ld\n",
data, ret4);
h_illan_attributes(adapter->vdev->unit_address,
set_attr, clr_attr, &ret_attr);
if (data == 1)
dev->features &= ~NETIF_F_IP_CSUM;
} else {
adapter->fw_ipv4_csum_support = data;
}
ret6 = h_illan_attributes(adapter->vdev->unit_address,
clr_attr6, set_attr6, &ret_attr);
if (ret6 != H_SUCCESS) {
netdev_err(dev, "unable to change IPv6 checksum "
"offload settings. %d rc=%ld\n",
data, ret6);
h_illan_attributes(adapter->vdev->unit_address,
set_attr6, clr_attr6, &ret_attr);
if (data == 1)
dev->features &= ~NETIF_F_IPV6_CSUM;
} else
adapter->fw_ipv6_csum_support = data;
if (ret4 == H_SUCCESS || ret6 == H_SUCCESS)
adapter->rx_csum = data;
else
rc1 = -EIO;
} else {
rc1 = -EIO;
netdev_err(dev, "unable to change checksum offload settings."
" %d rc=%ld ret_attr=%lx\n", data, ret,
ret_attr);
}
if (restart)
rc2 = ibmveth_open(dev);
return rc1 ? rc1 : rc2;
}
static int ibmveth_set_tso(struct net_device *dev, u32 data)
{
struct ibmveth_adapter *adapter = netdev_priv(dev);
unsigned long set_attr, clr_attr, ret_attr;
long ret1, ret2;
int rc1 = 0, rc2 = 0;
int restart = 0;
if (netif_running(dev)) {
restart = 1;
adapter->pool_config = 1;
ibmveth_close(dev);
adapter->pool_config = 0;
}
set_attr = 0;
clr_attr = 0;
if (data)
set_attr = IBMVETH_ILLAN_LRG_SR_ENABLED;
else
clr_attr = IBMVETH_ILLAN_LRG_SR_ENABLED;
ret1 = h_illan_attributes(adapter->vdev->unit_address, 0, 0, &ret_attr);
if (ret1 == H_SUCCESS && (ret_attr & IBMVETH_ILLAN_LRG_SND_SUPPORT) &&
!old_large_send) {
ret2 = h_illan_attributes(adapter->vdev->unit_address, clr_attr,
set_attr, &ret_attr);
if (ret2 != H_SUCCESS) {
netdev_err(dev, "unable to change tso settings. %d rc=%ld\n",
data, ret2);
h_illan_attributes(adapter->vdev->unit_address,
set_attr, clr_attr, &ret_attr);
if (data == 1)
dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
rc1 = -EIO;
} else {
adapter->fw_large_send_support = data;
adapter->large_send = data;
}
} else {
/* Older firmware version of large send offload does not
* support tcp6/ipv6
*/
if (data == 1) {
dev->features &= ~NETIF_F_TSO6;
netdev_info(dev, "TSO feature requires all partitions to have updated driver");
}
adapter->large_send = data;
}
if (restart)
rc2 = ibmveth_open(dev);
return rc1 ? rc1 : rc2;
}
static ssize_t veth_pool_store(struct kobject *kobj, struct attribute *attr,
const char *buf, size_t count)
{
struct ibmveth_buff_pool *pool = container_of(kobj,
struct ibmveth_buff_pool,
kobj);
struct net_device *netdev = dev_get_drvdata(
container_of(kobj->parent, struct device, kobj));
struct ibmveth_adapter *adapter = netdev_priv(netdev);
long value = simple_strtol(buf, NULL, 10);
long rc;
if (attr == &veth_active_attr) {
if (value && !pool->active) {
if (netif_running(netdev)) {
if (ibmveth_alloc_buffer_pool(pool)) {
netdev_err(netdev,
"unable to alloc pool\n");
return -ENOMEM;
}
pool->active = 1;
adapter->pool_config = 1;
ibmveth_close(netdev);
adapter->pool_config = 0;
if ((rc = ibmveth_open(netdev)))
return rc;
} else {
pool->active = 1;
}
} else if (!value && pool->active) {
int mtu = netdev->mtu + IBMVETH_BUFF_OH;
int i;
/* Make sure there is a buffer pool with buffers that
can hold a packet of the size of the MTU */
for (i = 0; i < IBMVETH_NUM_BUFF_POOLS; i++) {
if (pool == &adapter->rx_buff_pool[i])
continue;
if (!adapter->rx_buff_pool[i].active)
continue;
if (mtu <= adapter->rx_buff_pool[i].buff_size)
break;
}
if (i == IBMVETH_NUM_BUFF_POOLS) {
netdev_err(netdev, "no active pool >= MTU\n");
return -EPERM;
}
if (netif_running(netdev)) {
adapter->pool_config = 1;
ibmveth_close(netdev);
pool->active = 0;
adapter->pool_config = 0;
if ((rc = ibmveth_open(netdev)))
return rc;
}
pool->active = 0;
}
} else if (attr == &veth_num_attr) {
if (value <= 0 || value > IBMVETH_MAX_POOL_COUNT) {
return -EINVAL;
} else {
if (netif_running(netdev)) {
adapter->pool_config = 1;
ibmveth_close(netdev);
adapter->pool_config = 0;
pool->size = value;
if ((rc = ibmveth_open(netdev)))
return rc;
} else {
pool->size = value;
}
}
} else if (attr == &veth_size_attr) {
if (value <= IBMVETH_BUFF_OH || value > IBMVETH_MAX_BUF_SIZE) {
return -EINVAL;
} else {
if (netif_running(netdev)) {
adapter->pool_config = 1;
ibmveth_close(netdev);
adapter->pool_config = 0;
pool->buff_size = value;
if ((rc = ibmveth_open(netdev)))
return rc;
} else {
pool->buff_size = value;
}
}
}
/* kick the interrupt handler to allocate/deallocate pools */
ibmveth_interrupt(netdev->irq, netdev);
return count;
}