i40iw: Update hw_iwarp_state

[linux-2.6-block.git] / drivers / net / macsec.c

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 2d0beb1b801c0f0a3c27db7b1156c48697b0fdf4..351e701eb043b340204f1f07aff81ef100c7b5d6 100644 (file)
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -270,6 +270,7 @@ struct macsec_dev {
        struct pcpu_secy_stats __percpu *stats;
        struct list_head secys;
        struct gro_cells gro_cells;
+       unsigned int nest_level;
 };
 
 /**
@@ -344,7 +345,6 @@ static void free_rxsa(struct rcu_head *head)
 
        crypto_free_aead(sa->key.tfm);
        free_percpu(sa->stats);
-       macsec_rxsc_put(sa->sc);
        kfree(sa);
 }
 
@@ -863,6 +863,7 @@ static void macsec_decrypt_done(struct crypto_async_request *base, int err)
        struct net_device *dev = skb->dev;
        struct macsec_dev *macsec = macsec_priv(dev);
        struct macsec_rx_sa *rx_sa = macsec_skb_cb(skb)->rx_sa;
+       struct macsec_rx_sc *rx_sc = rx_sa->sc;
        int len, ret;
        u32 pn;
 
@@ -891,6 +892,7 @@ static void macsec_decrypt_done(struct crypto_async_request *base, int err)
 
 out:
        macsec_rxsa_put(rx_sa);
+       macsec_rxsc_put(rx_sc);
        dev_put(dev);
 }
 
@@ -1106,6 +1108,7 @@ static rx_handler_result_t macsec_handle_frame(struct sk_buff **pskb)
 
        list_for_each_entry_rcu(macsec, &rxd->secys, secys) {
                struct macsec_rx_sc *sc = find_rx_sc(&macsec->secy, sci);
+               sc = sc ? macsec_rxsc_get(sc) : NULL;
 
                if (sc) {
                        secy = &macsec->secy;
@@ -1180,8 +1183,10 @@ static rx_handler_result_t macsec_handle_frame(struct sk_buff **pskb)
 
        if (IS_ERR(skb)) {
                /* the decrypt callback needs the reference */
-               if (PTR_ERR(skb) != -EINPROGRESS)
+               if (PTR_ERR(skb) != -EINPROGRESS) {
                        macsec_rxsa_put(rx_sa);
+                       macsec_rxsc_put(rx_sc);
+               }
                rcu_read_unlock();
                *pskb = NULL;
                return RX_HANDLER_CONSUMED;
@@ -1197,6 +1202,7 @@ deliver:
 
        if (rx_sa)
                macsec_rxsa_put(rx_sa);
+       macsec_rxsc_put(rx_sc);
 
        ret = gro_cells_receive(&macsec->gro_cells, skb);
        if (ret == NET_RX_SUCCESS)
@@ -1212,6 +1218,7 @@ deliver:
 drop:
        macsec_rxsa_put(rx_sa);
 drop_nosa:
+       macsec_rxsc_put(rx_sc);
        rcu_read_unlock();
 drop_direct:
        kfree_skb(skb);
@@ -1646,7 +1653,7 @@ static int macsec_add_rxsa(struct sk_buff *skb, struct genl_info *info)
 
        rtnl_lock();
        rx_sc = get_rxsc_from_nl(genl_info_net(info), attrs, tb_rxsc, &dev, &secy);
-       if (IS_ERR(rx_sc) || !macsec_rxsc_get(rx_sc)) {
+       if (IS_ERR(rx_sc)) {
                rtnl_unlock();
                return PTR_ERR(rx_sc);
        }
@@ -2693,6 +2700,8 @@ static netdev_tx_t macsec_start_xmit(struct sk_buff *skb,
 
 #define MACSEC_FEATURES \
        (NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_FRAGLIST)
+static struct lock_class_key macsec_netdev_addr_lock_key;
+
 static int macsec_dev_init(struct net_device *dev)
 {
        struct macsec_dev *macsec = macsec_priv(dev);
@@ -2904,6 +2913,13 @@ static int macsec_get_iflink(const struct net_device *dev)
        return macsec_priv(dev)->real_dev->ifindex;
 }
 
+
+static int macsec_get_nest_level(struct net_device *dev)
+{
+       return macsec_priv(dev)->nest_level;
+}
+
+
 static const struct net_device_ops macsec_netdev_ops = {
        .ndo_init               = macsec_dev_init,
        .ndo_uninit             = macsec_dev_uninit,
@@ -2917,6 +2933,7 @@ static const struct net_device_ops macsec_netdev_ops = {
        .ndo_start_xmit         = macsec_start_xmit,
        .ndo_get_stats64        = macsec_get_stats64,
        .ndo_get_iflink         = macsec_get_iflink,
+       .ndo_get_lock_subclass  = macsec_get_nest_level,
 };
 
 static const struct device_type macsec_type = {
@@ -3041,22 +3058,31 @@ static void macsec_del_dev(struct macsec_dev *macsec)
        }
 }
 
+static void macsec_common_dellink(struct net_device *dev, struct list_head *head)
+{
+       struct macsec_dev *macsec = macsec_priv(dev);
+       struct net_device *real_dev = macsec->real_dev;
+
+       unregister_netdevice_queue(dev, head);
+       list_del_rcu(&macsec->secys);
+       macsec_del_dev(macsec);
+       netdev_upper_dev_unlink(real_dev, dev);
+
+       macsec_generation++;
+}
+
 static void macsec_dellink(struct net_device *dev, struct list_head *head)
 {
        struct macsec_dev *macsec = macsec_priv(dev);
        struct net_device *real_dev = macsec->real_dev;
        struct macsec_rxh_data *rxd = macsec_data_rtnl(real_dev);
 
-       macsec_generation++;
+       macsec_common_dellink(dev, head);
 
-       unregister_netdevice_queue(dev, head);
-       list_del_rcu(&macsec->secys);
        if (list_empty(&rxd->secys)) {
                netdev_rx_handler_unregister(real_dev);
                kfree(rxd);
        }
-
-       macsec_del_dev(macsec);
 }
 
 static int register_macsec_dev(struct net_device *real_dev,
@@ -3173,6 +3199,18 @@ static int macsec_newlink(struct net *net, struct net_device *dev,
        if (err < 0)
                return err;
 
+       dev_hold(real_dev);
+
+       macsec->nest_level = dev_get_nest_level(real_dev) + 1;
+       netdev_lockdep_set_classes(dev);
+       lockdep_set_class_and_subclass(&dev->addr_list_lock,
+                                      &macsec_netdev_addr_lock_key,
+                                      macsec_get_nest_level(dev));
+
+       err = netdev_upper_dev_link(real_dev, dev);
+       if (err < 0)
+               goto unregister;
+
        /* need to be already registered so that ->init has run and
         * the MAC addr is set
         */
@@ -3185,12 +3223,12 @@ static int macsec_newlink(struct net *net, struct net_device *dev,
 
        if (rx_handler && sci_exists(real_dev, sci)) {
                err = -EBUSY;
-               goto unregister;
+               goto unlink;
        }
 
        err = macsec_add_dev(dev, sci, icv_len);
        if (err)
-               goto unregister;
+               goto unlink;
 
        if (data)
                macsec_changelink_common(dev, data);
@@ -3201,12 +3239,12 @@ static int macsec_newlink(struct net *net, struct net_device *dev,
 
        macsec_generation++;
 
-       dev_hold(real_dev);
-
        return 0;
 
 del_dev:
        macsec_del_dev(macsec);
+unlink:
+       netdev_upper_dev_unlink(real_dev, dev);
 unregister:
        unregister_netdevice(dev);
        return err;
@@ -3376,8 +3414,12 @@ static int macsec_notify(struct notifier_block *this, unsigned long event,
 
                rxd = macsec_data_rtnl(real_dev);
                list_for_each_entry_safe(m, n, &rxd->secys, secys) {
-                       macsec_dellink(m->secy.netdev, &head);
+                       macsec_common_dellink(m->secy.netdev, &head);
                }
+
+               netdev_rx_handler_unregister(real_dev);
+               kfree(rxd);
+
                unregister_netdevice_many(&head);
                break;
        }