| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __SOCK_DIAG_H__ |
| #define __SOCK_DIAG_H__ |
| |
| #include <linux/netlink.h> |
| #include <linux/user_namespace.h> |
| #include <net/net_namespace.h> |
| #include <net/sock.h> |
| #include <uapi/linux/sock_diag.h> |
| |
| struct sk_buff; |
| struct nlmsghdr; |
| struct sock; |
| |
| struct sock_diag_handler { |
| __u8 family; |
| int (*dump)(struct sk_buff *skb, struct nlmsghdr *nlh); |
| int (*get_info)(struct sk_buff *skb, struct sock *sk); |
| int (*destroy)(struct sk_buff *skb, struct nlmsghdr *nlh); |
| }; |
| |
| int sock_diag_register(const struct sock_diag_handler *h); |
| void sock_diag_unregister(const struct sock_diag_handler *h); |
| |
| void sock_diag_register_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh)); |
| void sock_diag_unregister_inet_compat(int (*fn)(struct sk_buff *skb, struct nlmsghdr *nlh)); |
| |
| u64 __sock_gen_cookie(struct sock *sk); |
| |
| static inline u64 sock_gen_cookie(struct sock *sk) |
| { |
| u64 cookie; |
| |
| preempt_disable(); |
| cookie = __sock_gen_cookie(sk); |
| preempt_enable(); |
| |
| return cookie; |
| } |
| |
| int sock_diag_check_cookie(struct sock *sk, const __u32 *cookie); |
| void sock_diag_save_cookie(struct sock *sk, __u32 *cookie); |
| |
| int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attr); |
| int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk, |
| struct sk_buff *skb, int attrtype); |
| |
| static inline |
| enum sknetlink_groups sock_diag_destroy_group(const struct sock *sk) |
| { |
| switch (sk->sk_family) { |
| case AF_INET: |
| if (sk->sk_type == SOCK_RAW) |
| return SKNLGRP_NONE; |
| |
| switch (sk->sk_protocol) { |
| case IPPROTO_TCP: |
| return SKNLGRP_INET_TCP_DESTROY; |
| case IPPROTO_UDP: |
| return SKNLGRP_INET_UDP_DESTROY; |
| default: |
| return SKNLGRP_NONE; |
| } |
| case AF_INET6: |
| if (sk->sk_type == SOCK_RAW) |
| return SKNLGRP_NONE; |
| |
| switch (sk->sk_protocol) { |
| case IPPROTO_TCP: |
| return SKNLGRP_INET6_TCP_DESTROY; |
| case IPPROTO_UDP: |
| return SKNLGRP_INET6_UDP_DESTROY; |
| default: |
| return SKNLGRP_NONE; |
| } |
| default: |
| return SKNLGRP_NONE; |
| } |
| } |
| |
| static inline |
| bool sock_diag_has_destroy_listeners(const struct sock *sk) |
| { |
| const struct net *n = sock_net(sk); |
| const enum sknetlink_groups group = sock_diag_destroy_group(sk); |
| |
| return group != SKNLGRP_NONE && n->diag_nlsk && |
| netlink_has_listeners(n->diag_nlsk, group); |
| } |
| void sock_diag_broadcast_destroy(struct sock *sk); |
| |
| int sock_diag_destroy(struct sock *sk, int err); |
| #endif |