/**
* struct nfp_fl_tunnel_offloads - priv data for tunnel offloads
- * @mac_off_list: List of MAC addresses to offload
* @mac_index_list: List of unique 8-bit indexes for non NFP netdevs
* @ipv4_off_list: List of IPv4 addresses to offload
* @neigh_off_list: List of neighbour offloads
- * @mac_off_lock: Lock for the MAC address list
* @mac_index_lock: Lock for the MAC index list
* @ipv4_off_lock: Lock for the IPv4 address list
* @neigh_off_lock: Lock for the neighbour address list
* @mac_off_ids: IDA to manage id assignment for offloaded MACs
- * @mac_off_count: Number of MACs in address list
* @neigh_nb: Notifier to monitor neighbour state
*/
struct nfp_fl_tunnel_offloads {
- struct list_head mac_off_list;
struct list_head mac_index_list;
struct list_head ipv4_off_list;
struct list_head neigh_off_list;
- struct mutex mac_off_lock;
struct mutex mac_index_lock;
struct mutex ipv4_off_lock;
spinlock_t neigh_off_lock;
struct ida mac_off_ids;
- int mac_off_count;
struct notifier_block neigh_nb;
};
int nfp_tunnel_mac_event_handler(struct nfp_app *app,
struct net_device *netdev,
unsigned long event, void *ptr);
-void nfp_tunnel_write_macs(struct nfp_app *app);
void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4);
void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4);
void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb);
};
/**
- * struct nfp_tun_mac_addr - configure MAC address of tunnel EP on NFP
+ * struct nfp_tun_mac_addr_offload - configure MAC address of tunnel EP on NFP
* @reserved: reserved for future use
- * @count: number of MAC addresses in the message
- * @addresses.index: index of MAC address in the lookup table
- * @addresses.addr: interface MAC address
- * @addresses: series of MACs to offload
+ * @count: number of MAC addresses in the message (should be 1)
+ * @index: index of MAC address in the lookup table
+ * @addr: interface MAC address
*/
-struct nfp_tun_mac_addr {
+struct nfp_tun_mac_addr_offload {
__be16 reserved;
__be16 count;
- struct index_mac_addr {
- __be16 index;
- u8 addr[ETH_ALEN];
- } addresses[];
-};
-
-/**
- * struct nfp_tun_mac_offload_entry - list of MACs to offload
- * @index: index of MAC address for offloading
- * @addr: interface MAC address
- * @list: list pointer
- */
-struct nfp_tun_mac_offload_entry {
__be16 index;
u8 addr[ETH_ALEN];
- struct list_head list;
};
#define NFP_MAX_MAC_INDEX 0xff
nfp_tun_write_ipv4_list(app);
}
-void nfp_tunnel_write_macs(struct nfp_app *app)
-{
- struct nfp_flower_priv *priv = app->priv;
- struct nfp_tun_mac_offload_entry *entry;
- struct nfp_tun_mac_addr *payload;
- struct list_head *ptr, *storage;
- int mac_count, err, pay_size;
-
- mutex_lock(&priv->tun.mac_off_lock);
- if (!priv->tun.mac_off_count) {
- mutex_unlock(&priv->tun.mac_off_lock);
- return;
- }
-
- pay_size = sizeof(struct nfp_tun_mac_addr) +
- sizeof(struct index_mac_addr) * priv->tun.mac_off_count;
-
- payload = kzalloc(pay_size, GFP_KERNEL);
- if (!payload) {
- mutex_unlock(&priv->tun.mac_off_lock);
- return;
- }
-
- payload->count = cpu_to_be16(priv->tun.mac_off_count);
-
- mac_count = 0;
- list_for_each_safe(ptr, storage, &priv->tun.mac_off_list) {
- entry = list_entry(ptr, struct nfp_tun_mac_offload_entry,
- list);
- payload->addresses[mac_count].index = entry->index;
- ether_addr_copy(payload->addresses[mac_count].addr,
- entry->addr);
- mac_count++;
- }
-
- err = nfp_flower_xmit_tun_conf(app, NFP_FLOWER_CMSG_TYPE_TUN_MAC,
- pay_size, payload, GFP_KERNEL);
-
- kfree(payload);
-
- if (err) {
- mutex_unlock(&priv->tun.mac_off_lock);
- /* Write failed so retain list for future retry. */
- return;
- }
-
- /* If list was successfully offloaded, flush it. */
- list_for_each_safe(ptr, storage, &priv->tun.mac_off_list) {
- entry = list_entry(ptr, struct nfp_tun_mac_offload_entry,
- list);
- list_del(&entry->list);
- kfree(entry);
- }
-
- priv->tun.mac_off_count = 0;
- mutex_unlock(&priv->tun.mac_off_lock);
-}
-
static int nfp_tun_get_mac_idx(struct nfp_app *app, int ifindex)
{
struct nfp_flower_priv *priv = app->priv;
mutex_unlock(&priv->tun.mac_index_lock);
}
-static void nfp_tun_add_to_mac_offload_list(struct net_device *netdev,
- struct nfp_app *app)
+static int __nfp_tunnel_offload_mac(struct nfp_app *app, u8 *mac, u16 idx)
+{
+ struct nfp_tun_mac_addr_offload payload;
+
+ memset(&payload, 0, sizeof(payload));
+
+ /* FW supports multiple MACs per cmsg but restrict to single. */
+ payload.count = cpu_to_be16(1);
+ payload.index = cpu_to_be16(idx);
+ ether_addr_copy(payload.addr, mac);
+
+ return nfp_flower_xmit_tun_conf(app, NFP_FLOWER_CMSG_TYPE_TUN_MAC,
+ sizeof(struct nfp_tun_mac_addr_offload),
+ &payload, GFP_KERNEL);
+}
+
+static int
+nfp_tunnel_offload_mac(struct nfp_app *app, struct net_device *netdev)
{
- struct nfp_flower_priv *priv = app->priv;
- struct nfp_tun_mac_offload_entry *entry;
u16 nfp_mac_idx;
int port = 0;
- /* Check if MAC should be offloaded. */
- if (!is_valid_ether_addr(netdev->dev_addr))
- return;
-
if (nfp_netdev_is_nfp_repr(netdev))
port = nfp_repr_get_port_id(netdev);
else if (!nfp_fl_is_netdev_to_offload(netdev))
- return;
+ return 0;
- entry = kmalloc(sizeof(*entry), GFP_KERNEL);
- if (!entry) {
- nfp_flower_cmsg_warn(app, "Mem fail when offloading MAC.\n");
- return;
- }
+ if (!is_valid_ether_addr(netdev->dev_addr))
+ return -EINVAL;
if (FIELD_GET(NFP_FLOWER_CMSG_PORT_TYPE, port) ==
NFP_FLOWER_CMSG_PORT_TYPE_PHYS_PORT) {
/* Must assign our own unique 8-bit index. */
int idx = nfp_tun_get_mac_idx(app, netdev->ifindex);
- if (idx < 0) {
- nfp_flower_cmsg_warn(app, "Can't assign non-repr MAC index.\n");
- kfree(entry);
- return;
- }
+ if (idx < 0)
+ return idx;
+
nfp_mac_idx = idx << 8 | NFP_FLOWER_CMSG_PORT_TYPE_OTHER_PORT;
} else {
- kfree(entry);
- return;
+ return 0;
}
- entry->index = cpu_to_be16(nfp_mac_idx);
- ether_addr_copy(entry->addr, netdev->dev_addr);
-
- mutex_lock(&priv->tun.mac_off_lock);
- priv->tun.mac_off_count++;
- list_add_tail(&entry->list, &priv->tun.mac_off_list);
- mutex_unlock(&priv->tun.mac_off_lock);
+ return __nfp_tunnel_offload_mac(app, netdev->dev_addr, nfp_mac_idx);
}
int nfp_tunnel_mac_event_handler(struct nfp_app *app,
struct net_device *netdev,
unsigned long event, void *ptr)
{
+ int err;
+
if (event == NETDEV_DOWN || event == NETDEV_UNREGISTER) {
/* If non-nfp netdev then free its offload index. */
if (nfp_fl_is_netdev_to_offload(netdev))
nfp_tun_del_mac_idx(app, netdev->ifindex);
} else if (event == NETDEV_UP || event == NETDEV_CHANGEADDR ||
event == NETDEV_REGISTER) {
- nfp_tun_add_to_mac_offload_list(netdev, app);
-
- /* Force a list write to keep NFP up to date. */
- nfp_tunnel_write_macs(app);
+ err = nfp_tunnel_offload_mac(app, netdev);
+ if (err)
+ nfp_flower_cmsg_warn(app, "Failed to offload MAC on %s.\n",
+ netdev_name(netdev));
}
return NOTIFY_OK;
}
struct nfp_flower_priv *priv = app->priv;
/* Initialise priv data for MAC offloading. */
- priv->tun.mac_off_count = 0;
- mutex_init(&priv->tun.mac_off_lock);
- INIT_LIST_HEAD(&priv->tun.mac_off_list);
mutex_init(&priv->tun.mac_index_lock);
INIT_LIST_HEAD(&priv->tun.mac_index_list);
ida_init(&priv->tun.mac_off_ids);
void nfp_tunnel_config_stop(struct nfp_app *app)
{
- struct nfp_tun_mac_offload_entry *mac_entry;
struct nfp_flower_priv *priv = app->priv;
struct nfp_ipv4_route_entry *route_entry;
struct nfp_tun_mac_non_nfp_idx *mac_idx;
unregister_netevent_notifier(&priv->tun.neigh_nb);
- /* Free any memory that may be occupied by MAC list. */
- list_for_each_safe(ptr, storage, &priv->tun.mac_off_list) {
- mac_entry = list_entry(ptr, struct nfp_tun_mac_offload_entry,
- list);
- list_del(&mac_entry->list);
- kfree(mac_entry);
- }
-
/* Free any memory that may be occupied by MAC index list. */
list_for_each_safe(ptr, storage, &priv->tun.mac_index_list) {
mac_idx = list_entry(ptr, struct nfp_tun_mac_non_nfp_idx,
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