bpqether.c (58e16d792a6a8c6b750f637a4649967fcac853dc) bpqether.c (ab92d68fc22f9afab480153bd82a20f6e2533769)
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * G8BPQ compatible "AX.25 via ethernet" driver release 004
4 *
5 * This code REQUIRES 2.0.0 or higher/ NET3.029
6 *
7 * This is a "pseudo" network driver to allow AX.25 over Ethernet
8 * using G8BPQ encapsulation. It has been extracted from the protocol

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102 struct net_device *ethdev; /* link to ethernet device */
103 struct net_device *axdev; /* bpq device (bpq#) */
104 char dest_addr[6]; /* ether destination address */
105 char acpt_addr[6]; /* accept ether frames from this address only */
106};
107
108static LIST_HEAD(bpq_devices);
109
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * G8BPQ compatible "AX.25 via ethernet" driver release 004
4 *
5 * This code REQUIRES 2.0.0 or higher/ NET3.029
6 *
7 * This is a "pseudo" network driver to allow AX.25 over Ethernet
8 * using G8BPQ encapsulation. It has been extracted from the protocol

--- 93 unchanged lines hidden (view full) ---

102 struct net_device *ethdev; /* link to ethernet device */
103 struct net_device *axdev; /* bpq device (bpq#) */
104 char dest_addr[6]; /* ether destination address */
105 char acpt_addr[6]; /* accept ether frames from this address only */
106};
107
108static LIST_HEAD(bpq_devices);
109
110/*
111 * bpqether network devices are paired with ethernet devices below them, so
112 * form a special "super class" of normal ethernet devices; split their locks
113 * off into a separate class since they always nest.
114 */
115static struct lock_class_key bpq_netdev_xmit_lock_key;
116static struct lock_class_key bpq_netdev_addr_lock_key;
117
118static void bpq_set_lockdep_class_one(struct net_device *dev,
119 struct netdev_queue *txq,
120 void *_unused)
121{
122 lockdep_set_class(&txq->_xmit_lock, &bpq_netdev_xmit_lock_key);
123}
124
125static void bpq_set_lockdep_class(struct net_device *dev)
126{
127 lockdep_set_class(&dev->addr_list_lock, &bpq_netdev_addr_lock_key);
128 netdev_for_each_tx_queue(dev, bpq_set_lockdep_class_one, NULL);
129}
130
131/* ------------------------------------------------------------------------ */
132
133
134/*
135 * Get the ethernet device for a BPQ device
136 */
137static inline struct net_device *bpq_get_ether_dev(struct net_device *dev)
138{

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493 bpq->axdev = ndev;
494
495 eth_broadcast_addr(bpq->dest_addr);
496 eth_broadcast_addr(bpq->acpt_addr);
497
498 err = register_netdevice(ndev);
499 if (err)
500 goto error;
110/* ------------------------------------------------------------------------ */
111
112
113/*
114 * Get the ethernet device for a BPQ device
115 */
116static inline struct net_device *bpq_get_ether_dev(struct net_device *dev)
117{

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472 bpq->axdev = ndev;
473
474 eth_broadcast_addr(bpq->dest_addr);
475 eth_broadcast_addr(bpq->acpt_addr);
476
477 err = register_netdevice(ndev);
478 if (err)
479 goto error;
501 bpq_set_lockdep_class(ndev);
502
503 /* List protected by RTNL */
504 list_add_rcu(&bpq->bpq_list, &bpq_devices);
505 return 0;
506
507 error:
508 dev_put(edev);
509 free_netdev(ndev);

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481 /* List protected by RTNL */
482 list_add_rcu(&bpq->bpq_list, &bpq_devices);
483 return 0;
484
485 error:
486 dev_put(edev);
487 free_netdev(ndev);

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