static int __init ifb_init_one(int index)
{
struct net_device *dev_ifb;
struct ifb_private *dp;
int err;
dev_ifb = alloc_netdev(sizeof(struct ifb_private),
"ifb%d", ifb_setup);
if (!dev_ifb)
return -ENOMEM;
dp = netdev_priv(dev_ifb);
u64_stats_init(&dp->rsync);
u64_stats_init(&dp->tsync);
dev_ifb->rtnl_link_ops = &ifb_link_ops;
err = register_netdevice(dev_ifb);
if (err < 0)
goto err;
return 0;
err:
free_netdev(dev_ifb);
return err;
}
/**
* fm10k_setup_tx_resources - allocate Tx resources (Descriptors)
* @tx_ring: tx descriptor ring (for a specific queue) to setup
*
* Return 0 on success, negative on failure
**/
int fm10k_setup_tx_resources(struct fm10k_ring *tx_ring)
{
struct device *dev = tx_ring->dev;
int size;
size = sizeof(struct fm10k_tx_buffer) * tx_ring->count;
tx_ring->tx_buffer = vzalloc(size);
if (!tx_ring->tx_buffer)
goto err;
u64_stats_init(&tx_ring->syncp);
/* round up to nearest 4K */
tx_ring->size = tx_ring->count * sizeof(struct fm10k_tx_desc);
tx_ring->size = ALIGN(tx_ring->size, 4096);
tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
&tx_ring->dma, GFP_KERNEL);
if (!tx_ring->desc)
goto err;
return 0;
err:
vfree(tx_ring->tx_buffer);
tx_ring->tx_buffer = NULL;
return -ENOMEM;
}
/**
* fm10k_setup_rx_resources - allocate Rx resources (Descriptors)
* @rx_ring: rx descriptor ring (for a specific queue) to setup
*
* Returns 0 on success, negative on failure
**/
int fm10k_setup_rx_resources(struct fm10k_ring *rx_ring)
{
struct device *dev = rx_ring->dev;
int size;
size = sizeof(struct fm10k_rx_buffer) * rx_ring->count;
rx_ring->rx_buffer = vzalloc(size);
if (!rx_ring->rx_buffer)
goto err;
u64_stats_init(&rx_ring->syncp);
/* Round up to nearest 4K */
rx_ring->size = rx_ring->count * sizeof(union fm10k_rx_desc);
rx_ring->size = ALIGN(rx_ring->size, 4096);
rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
&rx_ring->dma, GFP_KERNEL);
if (!rx_ring->desc)
goto err;
return 0;
err:
vfree(rx_ring->rx_buffer);
rx_ring->rx_buffer = NULL;
return -ENOMEM;
}
static int nlmon_dev_init(struct net_device *dev)
{
int i;
dev->lstats = alloc_percpu(struct pcpu_lstats);
for_each_possible_cpu(i) {
struct pcpu_lstats *nlmstats;
nlmstats = per_cpu_ptr(dev->lstats, i);
u64_stats_init(&nlmstats->syncp);
}
return dev->lstats == NULL ? -ENOMEM : 0;
}
static int ifb_dev_init(struct net_device *dev)
{
struct ifb_dev_private *dp = netdev_priv(dev);
struct ifb_q_private *txp;
int i;
txp = kcalloc(dev->num_tx_queues, sizeof(*txp), GFP_KERNEL);
if (!txp)
return -ENOMEM;
dp->tx_private = txp;
for (i = 0; i < dev->num_tx_queues; i++,txp++) {
txp->txqnum = i;
txp->dev = dev;
__skb_queue_head_init(&txp->rq);
__skb_queue_head_init(&txp->tq);
u64_stats_init(&txp->rsync);
u64_stats_init(&txp->tsync);
tasklet_init(&txp->ifb_tasklet, ifb_ri_tasklet,
(unsigned long)txp);
netif_tx_start_queue(netdev_get_tx_queue(dev, i));
}
return 0;
}
static int veth_dev_init(struct net_device *dev)
{
int i;
dev->vstats = alloc_percpu(struct pcpu_vstats);
if (!dev->vstats)
return -ENOMEM;
for_each_possible_cpu(i) {
struct pcpu_vstats *veth_stats;
veth_stats = per_cpu_ptr(dev->vstats, i);
u64_stats_init(&veth_stats->syncp);
}
return 0;
}
int ip_tunnel_init(struct net_device *dev)
{
struct ip_tunnel *tunnel = netdev_priv(dev);
struct iphdr *iph = &tunnel->parms.iph;
int i, err;
dev->destructor = ip_tunnel_dev_free;
dev->tstats = alloc_percpu(struct pcpu_sw_netstats);
if (!dev->tstats)
return -ENOMEM;
for_each_possible_cpu(i) {
struct pcpu_sw_netstats *ipt_stats;
ipt_stats = per_cpu_ptr(dev->tstats, i);
u64_stats_init(&ipt_stats->syncp);
}
tunnel->dst_cache = alloc_percpu(struct ip_tunnel_dst);
if (!tunnel->dst_cache) {
free_percpu(dev->tstats);
return -ENOMEM;
}
err = gro_cells_init(&tunnel->gro_cells, dev);
if (err) {
free_percpu(tunnel->dst_cache);
free_percpu(dev->tstats);
return err;
}
tunnel->dev = dev;
tunnel->net = dev_net(dev);
strcpy(tunnel->parms.name, dev->name);
iph->version = 4;
iph->ihl = 5;
return 0;
}