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3deec3b4af
route_doit() calls phonet_route_add() or phonet_route_del() for RTM_NEWROUTE or RTM_DELROUTE, respectively. Both functions only touch phonet_pernet(dev_net(dev))->routes, which is currently protected by RTNL and its dedicated mutex, phonet_routes.lock. We will convert route_doit() to RCU and cannot use mutex inside RCU. Let's convert the mutex to spinlock_t. Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* File: pn_dev.h
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*
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* Phonet network device
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*
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* Copyright (C) 2008 Nokia Corporation.
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*/
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#ifndef PN_DEV_H
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#define PN_DEV_H
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#include <linux/list.h>
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#include <linux/spinlock.h>
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struct net;
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struct phonet_device_list {
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struct list_head list;
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spinlock_t lock;
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};
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struct phonet_device_list *phonet_device_list(struct net *net);
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struct phonet_device {
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struct list_head list;
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struct net_device *netdev;
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DECLARE_BITMAP(addrs, 64);
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struct rcu_head rcu;
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};
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int phonet_device_init(void);
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void phonet_device_exit(void);
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int phonet_netlink_register(void);
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struct net_device *phonet_device_get(struct net *net);
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int phonet_address_add(struct net_device *dev, u8 addr);
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int phonet_address_del(struct net_device *dev, u8 addr);
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u8 phonet_address_get(struct net_device *dev, u8 addr);
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int phonet_address_lookup(struct net *net, u8 addr);
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void phonet_address_notify(struct net *net, int event, u32 ifindex, u8 addr);
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int phonet_route_add(struct net_device *dev, u8 daddr);
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int phonet_route_del(struct net_device *dev, u8 daddr);
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void rtm_phonet_notify(struct net *net, int event, u32 ifindex, u8 dst);
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struct net_device *phonet_route_get_rcu(struct net *net, u8 daddr);
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struct net_device *phonet_route_output(struct net *net, u8 daddr);
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#define PN_NO_ADDR 0xff
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extern const struct seq_operations pn_sock_seq_ops;
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extern const struct seq_operations pn_res_seq_ops;
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#endif
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