diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /net/netlink/af_netlink.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'net/netlink/af_netlink.h')
-rw-r--r-- | net/netlink/af_netlink.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/net/netlink/af_netlink.h b/net/netlink/af_netlink.h new file mode 100644 index 000000000..b30b8fc76 --- /dev/null +++ b/net/netlink/af_netlink.h @@ -0,0 +1,78 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _AF_NETLINK_H +#define _AF_NETLINK_H + +#include <linux/rhashtable.h> +#include <linux/atomic.h> +#include <linux/workqueue.h> +#include <net/sock.h> + +/* flags */ +enum { + NETLINK_F_KERNEL_SOCKET, + NETLINK_F_RECV_PKTINFO, + NETLINK_F_BROADCAST_SEND_ERROR, + NETLINK_F_RECV_NO_ENOBUFS, + NETLINK_F_LISTEN_ALL_NSID, + NETLINK_F_CAP_ACK, + NETLINK_F_EXT_ACK, + NETLINK_F_STRICT_CHK, +}; + +#define NLGRPSZ(x) (ALIGN(x, sizeof(unsigned long) * 8) / 8) +#define NLGRPLONGS(x) (NLGRPSZ(x)/sizeof(unsigned long)) + +struct netlink_sock { + /* struct sock has to be the first member of netlink_sock */ + struct sock sk; + unsigned long flags; + u32 portid; + u32 dst_portid; + u32 dst_group; + u32 subscriptions; + u32 ngroups; + unsigned long *groups; + unsigned long state; + size_t max_recvmsg_len; + wait_queue_head_t wait; + bool bound; + bool cb_running; + int dump_done_errno; + struct netlink_callback cb; + struct mutex *cb_mutex; + struct mutex cb_def_mutex; + void (*netlink_rcv)(struct sk_buff *skb); + int (*netlink_bind)(struct net *net, int group); + void (*netlink_unbind)(struct net *net, int group); + struct module *module; + + struct rhash_head node; + struct rcu_head rcu; + struct work_struct work; +}; + +static inline struct netlink_sock *nlk_sk(struct sock *sk) +{ + return container_of(sk, struct netlink_sock, sk); +} + +#define nlk_test_bit(nr, sk) test_bit(NETLINK_F_##nr, &nlk_sk(sk)->flags) + +struct netlink_table { + struct rhashtable hash; + struct hlist_head mc_list; + struct listeners __rcu *listeners; + unsigned int flags; + unsigned int groups; + struct mutex *cb_mutex; + struct module *module; + int (*bind)(struct net *net, int group); + void (*unbind)(struct net *net, int group); + bool (*compare)(struct net *net, struct sock *sock); + int registered; +}; + +extern struct netlink_table *nl_table; +extern rwlock_t nl_table_lock; + +#endif |