/*
* opa_vnic_mac_send_event - post event on possible mac list exchange
* Send trap when digest from uc/mc mac list differs from previous run.
* Digest is evaluated similar to how cksum does.
*/
static void opa_vnic_mac_send_event(struct net_device *netdev, u8 event)
{
struct opa_vnic_adapter *adapter = opa_vnic_priv(netdev);
struct netdev_hw_addr *ha;
struct netdev_hw_addr_list *hw_list;
u32 *ref_crc;
u32 l, crc = 0;
switch (event) {
case OPA_VESWPORT_TRAP_IFACE_UCAST_MAC_CHANGE:
hw_list = &netdev->uc;
adapter->info.vport.uc_macs_gen_count++;
ref_crc = &adapter->umac_hash;
break;
case OPA_VESWPORT_TRAP_IFACE_MCAST_MAC_CHANGE:
hw_list = &netdev->mc;
adapter->info.vport.mc_macs_gen_count++;
ref_crc = &adapter->mmac_hash;
break;
default:
return;
}
netdev_hw_addr_list_for_each(ha, hw_list) {
crc = crc32_le(crc, ha->addr, ETH_ALEN);
}
/* This function is overloaded for opa_vnic specific implementation */
static void opa_vnic_get_stats64(struct net_device *netdev,
struct rtnl_link_stats64 *stats)
{
struct opa_vnic_adapter *adapter = opa_vnic_priv(netdev);
struct opa_vnic_stats vstats;
memset(&vstats, 0, sizeof(vstats));
spin_lock(&adapter->stats_lock);
adapter->rn_ops->ndo_get_stats64(netdev, &vstats.netstats);
spin_unlock(&adapter->stats_lock);
memcpy(stats, &vstats.netstats, sizeof(*stats));
}
static u16 opa_vnic_select_queue(struct net_device *netdev, struct sk_buff *skb,
void *accel_priv,
select_queue_fallback_t fallback)
{
struct opa_vnic_adapter *adapter = opa_vnic_priv(netdev);
struct opa_vnic_skb_mdata *mdata;
int rc;
/* pass entropy and vl as metadata in skb */
mdata = skb_push(skb, sizeof(*mdata));
mdata->entropy = opa_vnic_calc_entropy(adapter, skb);
mdata->vl = opa_vnic_get_vl(adapter, skb);
rc = adapter->rn_ops->ndo_select_queue(netdev, skb,
accel_priv, fallback);
skb_pull(skb, sizeof(*mdata));
return rc;
}
/* opa_netdev_start_xmit - transmit function */
static netdev_tx_t opa_netdev_start_xmit(struct sk_buff *skb,
struct net_device *netdev)
{
struct opa_vnic_adapter *adapter = opa_vnic_priv(netdev);
v_dbg("xmit: queue %d skb len %d\n", skb->queue_mapping, skb->len);
/* pad to ensure mininum ethernet packet length */
if (unlikely(skb->len < ETH_ZLEN)) {
if (skb_padto(skb, ETH_ZLEN))
return NETDEV_TX_OK;
skb_put(skb, ETH_ZLEN - skb->len);
}
opa_vnic_encap_skb(adapter, skb);
return adapter->rn_ops->ndo_start_xmit(skb, netdev);
}
/* vnic_get_ethtool_stats - get statistics */
static void vnic_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, u64 *data)
{
struct opa_vnic_adapter *adapter = opa_vnic_priv(netdev);
struct opa_vnic_stats vstats;
int i;
memset(&vstats, 0, sizeof(vstats));
mutex_lock(&adapter->stats_lock);
adapter->rn_ops->ndo_get_stats64(netdev, &vstats.netstats);
for (i = 0; i < VNIC_STATS_LEN; i++) {
char *p = (char *)&vstats + vnic_gstrings_stats[i].stat_offset;
data[i] = (vnic_gstrings_stats[i].sizeof_stat ==
sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
}
mutex_unlock(&adapter->stats_lock);
}
/* opa_vnic_set_mac_addr - change mac address */
static int opa_vnic_set_mac_addr(struct net_device *netdev, void *addr)
{
struct opa_vnic_adapter *adapter = opa_vnic_priv(netdev);
struct sockaddr *sa = addr;
int rc;
if (!memcmp(netdev->dev_addr, sa->sa_data, ETH_ALEN))
return 0;
mutex_lock(&adapter->lock);
rc = eth_mac_addr(netdev, addr);
mutex_unlock(&adapter->lock);
if (rc)
return rc;
adapter->info.vport.uc_macs_gen_count++;
opa_vnic_vema_report_event(adapter,
OPA_VESWPORT_TRAP_IFACE_UCAST_MAC_CHANGE);
return 0;
}
