netxen: fix mac list management

o use standard linked list api for mac addr list management
  in NX3031.
o release mac addresses in firmware in dev close().

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
index 8dacfbb..d368e24 100644 (file)
--- a/drivers/net/netxen/netxen_nic.h
+++ b/drivers/net/netxen/netxen_nic.h
@@ -1019,8 +1019,8 @@ typedef struct {
 #define NETXEN_MAC_DEL 2
 
 typedef struct nx_mac_list_s {
-       struct nx_mac_list_s *next;
-       uint8_t mac_addr[MAX_ADDR_LEN];
+       struct list_head list;
+       uint8_t mac_addr[ETH_ALEN+2];
 } nx_mac_list_t;
 
 /*
@@ -1213,7 +1213,7 @@ struct netxen_adapter {
 
        struct net_device *netdev;
        struct pci_dev *pdev;
-       nx_mac_list_t   *mac_list;
+       struct list_head mac_list;
 
        u32 curr_window;
        u32 crb_win;

diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c
index 23c974a..be643ea 100644 (file)
--- a/drivers/net/netxen/netxen_nic_hw.c
+++ b/drivers/net/netxen/netxen_nic_hw.c
@@ -470,45 +470,6 @@ void netxen_p2_nic_set_multi(struct net_device *netdev)
                netxen_nic_set_mcast_addr(adapter, index, null_addr);
 }
 
-static int nx_p3_nic_add_mac(struct netxen_adapter *adapter,
-               u8 *addr, nx_mac_list_t **add_list, nx_mac_list_t **del_list)
-{
-       nx_mac_list_t *cur, *prev;
-
-       /* if in del_list, move it to adapter->mac_list */
-       for (cur = *del_list, prev = NULL; cur;) {
-               if (memcmp(addr, cur->mac_addr, ETH_ALEN) == 0) {
-                       if (prev == NULL)
-                               *del_list = cur->next;
-                       else
-                               prev->next = cur->next;
-                       cur->next = adapter->mac_list;
-                       adapter->mac_list = cur;
-                       return 0;
-               }
-               prev = cur;
-               cur = cur->next;
-       }
-
-       /* make sure to add each mac address only once */
-       for (cur = adapter->mac_list; cur; cur = cur->next) {
-               if (memcmp(addr, cur->mac_addr, ETH_ALEN) == 0)
-                       return 0;
-       }
-       /* not in del_list, create new entry and add to add_list */
-       cur = kmalloc(sizeof(*cur), in_atomic()? GFP_ATOMIC : GFP_KERNEL);
-       if (cur == NULL) {
-               printk(KERN_ERR "%s: cannot allocate memory. MAC filtering may"
-                               "not work properly from now.\n", __func__);
-               return -1;
-       }
-
-       memcpy(cur->mac_addr, addr, ETH_ALEN);
-       cur->next = *add_list;
-       *add_list = cur;
-       return 0;
-}
-
 static int
 netxen_send_cmd_descs(struct netxen_adapter *adapter,
                struct cmd_desc_type0 *cmd_desc_arr, int nr_desc)
@@ -555,14 +516,12 @@ netxen_send_cmd_descs(struct netxen_adapter *adapter,
        return 0;
 }
 
-static int nx_p3_sre_macaddr_change(struct net_device *dev,
-               u8 *addr, unsigned op)
+static int
+nx_p3_sre_macaddr_change(struct netxen_adapter *adapter, u8 *addr, unsigned op)
 {
-       struct netxen_adapter *adapter = netdev_priv(dev);
        nx_nic_req_t req;
        nx_mac_req_t *mac_req;
        u64 word;
-       int rv;
 
        memset(&req, 0, sizeof(nx_nic_req_t));
        req.qhdr = cpu_to_le64(NX_NIC_REQUEST << 23);
@@ -574,28 +533,51 @@ static int nx_p3_sre_macaddr_change(struct net_device *dev,
        mac_req->op = op;
        memcpy(mac_req->mac_addr, addr, 6);
 
-       rv = netxen_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
-       if (rv != 0) {
-               printk(KERN_ERR "ERROR. Could not send mac update\n");
-               return rv;
+       return netxen_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
+}
+
+static int nx_p3_nic_add_mac(struct netxen_adapter *adapter,
+               u8 *addr, struct list_head *del_list)
+{
+       struct list_head *head;
+       nx_mac_list_t *cur;
+
+       /* look up if already exists */
+       list_for_each(head, del_list) {
+               cur = list_entry(head, nx_mac_list_t, list);
+
+               if (memcmp(addr, cur->mac_addr, ETH_ALEN) == 0) {
+                       list_move_tail(head, &adapter->mac_list);
+                       return 0;
+               }
        }
 
-       return 0;
+       cur = kzalloc(sizeof(nx_mac_list_t), GFP_ATOMIC);
+       if (cur == NULL) {
+               printk(KERN_ERR "%s: failed to add mac address filter\n",
+                               adapter->netdev->name);
+               return -ENOMEM;
+       }
+       memcpy(cur->mac_addr, addr, ETH_ALEN);
+       list_add_tail(&cur->list, &adapter->mac_list);
+       return nx_p3_sre_macaddr_change(adapter,
+                               cur->mac_addr, NETXEN_MAC_ADD);
 }
 
 void netxen_p3_nic_set_multi(struct net_device *netdev)
 {
        struct netxen_adapter *adapter = netdev_priv(netdev);
-       nx_mac_list_t *cur, *next, *del_list, *add_list = NULL;
        struct dev_mc_list *mc_ptr;
        u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
        u32 mode = VPORT_MISS_MODE_DROP;
+       LIST_HEAD(del_list);
+       struct list_head *head;
+       nx_mac_list_t *cur;
 
-       del_list = adapter->mac_list;
-       adapter->mac_list = NULL;
+       list_splice_tail_init(&adapter->mac_list, &del_list);
 
-       nx_p3_nic_add_mac(adapter, netdev->dev_addr, &add_list, &del_list);
-       nx_p3_nic_add_mac(adapter, bcast_addr, &add_list, &del_list);
+       nx_p3_nic_add_mac(adapter, netdev->dev_addr, &del_list);
+       nx_p3_nic_add_mac(adapter, bcast_addr, &del_list);
 
        if (netdev->flags & IFF_PROMISC) {
                mode = VPORT_MISS_MODE_ACCEPT_ALL;
@@ -611,25 +593,20 @@ void netxen_p3_nic_set_multi(struct net_device *netdev)
        if (netdev->mc_count > 0) {
                for (mc_ptr = netdev->mc_list; mc_ptr;
                     mc_ptr = mc_ptr->next) {
-                       nx_p3_nic_add_mac(adapter, mc_ptr->dmi_addr,
-                                         &add_list, &del_list);
+                       nx_p3_nic_add_mac(adapter, mc_ptr->dmi_addr, &del_list);
                }
        }
 
 send_fw_cmd:
        adapter->set_promisc(adapter, mode);
-       for (cur = del_list; cur;) {
-               nx_p3_sre_macaddr_change(netdev, cur->mac_addr, NETXEN_MAC_DEL);
-               next = cur->next;
+       head = &del_list;
+       while (!list_empty(head)) {
+               cur = list_entry(head->next, nx_mac_list_t, list);
+
+               nx_p3_sre_macaddr_change(adapter,
+                               cur->mac_addr, NETXEN_MAC_DEL);
+               list_del(&cur->list);
                kfree(cur);
-               cur = next;
-       }
-       for (cur = add_list; cur;) {
-               nx_p3_sre_macaddr_change(netdev, cur->mac_addr, NETXEN_MAC_ADD);
-               next = cur->next;
-               cur->next = adapter->mac_list;
-               adapter->mac_list = cur;
-               cur = next;
        }
 }
 
@@ -654,14 +631,15 @@ int netxen_p3_nic_set_promisc(struct netxen_adapter *adapter, u32 mode)
 
 void netxen_p3_free_mac_list(struct netxen_adapter *adapter)
 {
-       nx_mac_list_t *cur, *next;
-
-       cur = adapter->mac_list;
-
-       while (cur) {
-               next = cur->next;
+       nx_mac_list_t *cur;
+       struct list_head *head = &adapter->mac_list;
+
+       while (!list_empty(head)) {
+               cur = list_entry(head->next, nx_mac_list_t, list);
+               nx_p3_sre_macaddr_change(adapter,
+                               cur->mac_addr, NETXEN_MAC_DEL);
+               list_del(&cur->list);
                kfree(cur);
-               cur = next;
        }
 }
 

diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 6a496b1..a5577f8 100644 (file)
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -815,6 +815,9 @@ netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
        if (adapter->stop_port)
                adapter->stop_port(adapter);
 
+       if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
+               netxen_p3_free_mac_list(adapter);
+
        netxen_release_tx_buffers(adapter);
 
        FLUSH_SCHEDULED_WORK();
@@ -961,6 +964,7 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        rwlock_init(&adapter->adapter_lock);
        spin_lock_init(&adapter->tx_clean_lock);
+       INIT_LIST_HEAD(&adapter->mac_list);
 
        err = netxen_setup_pci_map(adapter);
        if (err)
@@ -1114,9 +1118,6 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev)
 
        if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
                netxen_nic_detach(adapter);
-
-               if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
-                       netxen_p3_free_mac_list(adapter);
        }
 
        if (adapter->portnum == 0)