+struct rocker_fdb_learn_work {
+ struct work_struct work;
+ struct net_device *dev;
+ int flags;
+ u8 addr[ETH_ALEN];
+ u16 vid;
+};
+
+static void rocker_port_fdb_learn_work(struct work_struct *work)
+{
+ struct rocker_fdb_learn_work *lw =
+ container_of(work, struct rocker_fdb_learn_work, work);
+ bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
+ bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
+
+ if (learned & removing)
+ br_fdb_external_learn_del(lw->dev, lw->addr, lw->vid);
+ else if (learned & !removing)
+ br_fdb_external_learn_add(lw->dev, lw->addr, lw->vid);
+
+ kfree(work);
+}
+
+static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
+ int flags, const u8 *addr, __be16 vlan_id)
+{
+ struct rocker_fdb_learn_work *lw;
+ enum rocker_of_dpa_table_id goto_tbl =
+ ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
+ u32 out_lport = rocker_port->lport;
+ u32 tunnel_id = 0;
+ u32 group_id = ROCKER_GROUP_NONE;
+ bool copy_to_cpu = false;
+ int err;
+
+ if (rocker_port_is_bridged(rocker_port))
+ group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
+
+ if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
+ err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL,
+ vlan_id, tunnel_id, goto_tbl,
+ group_id, copy_to_cpu);
+ if (err)
+ return err;
+ }
+
+ if (!rocker_port_is_bridged(rocker_port))
+ return 0;
+
+ lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags));
+ if (!lw)
+ return -ENOMEM;
+
+ INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
+
+ lw->dev = rocker_port->dev;
+ lw->flags = flags;
+ ether_addr_copy(lw->addr, addr);
+ lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
+
+ schedule_work(&lw->work);
+
+ return 0;
+}
+
+static struct rocker_fdb_tbl_entry *
+rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
+{
+ struct rocker_fdb_tbl_entry *found;
+
+ hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
+ if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
+ return found;
+
+ return NULL;
+}
+
+static int rocker_port_fdb(struct rocker_port *rocker_port,
+ const unsigned char *addr,
+ __be16 vlan_id, int flags)
+{
+ struct rocker *rocker = rocker_port->rocker;
+ struct rocker_fdb_tbl_entry *fdb;
+ struct rocker_fdb_tbl_entry *found;
+ bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
+ unsigned long lock_flags;
+
+ fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags));
+ if (!fdb)
+ return -ENOMEM;
+
+ fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
+ fdb->key.lport = rocker_port->lport;
+ ether_addr_copy(fdb->key.addr, addr);
+ fdb->key.vlan_id = vlan_id;
+ fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
+
+ spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
+
+ found = rocker_fdb_tbl_find(rocker, fdb);
+
+ if (removing && found) {
+ kfree(fdb);
+ hash_del(&found->entry);
+ } else if (!removing && !found) {
+ hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
+ }
+
+ spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
+
+ /* Check if adding and already exists, or removing and can't find */
+ if (!found != !removing) {
+ kfree(fdb);
+ if (!found && removing)
+ return 0;
+ /* Refreshing existing to update aging timers */
+ flags |= ROCKER_OP_FLAG_REFRESH;
+ }
+
+ return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id);
+}
+
+static int rocker_port_fdb_flush(struct rocker_port *rocker_port)
+{
+ struct rocker *rocker = rocker_port->rocker;
+ struct rocker_fdb_tbl_entry *found;
+ unsigned long lock_flags;
+ int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
+ struct hlist_node *tmp;
+ int bkt;
+ int err = 0;
+
+ if (rocker_port->stp_state == BR_STATE_LEARNING ||
+ rocker_port->stp_state == BR_STATE_FORWARDING)
+ return 0;
+
+ spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
+
+ hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
+ if (found->key.lport != rocker_port->lport)
+ continue;
+ if (!found->learned)
+ continue;
+ err = rocker_port_fdb_learn(rocker_port, flags,
+ found->key.addr,
+ found->key.vlan_id);
+ if (err)
+ goto err_out;
+ hash_del(&found->entry);
+ }
+
+err_out:
+ spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
+
+ return err;
+}
+