/* SPDX-License-Identifier: GPL-2.0 */
#ifndef NET_COMPAT_H
#define NET_COMPAT_H


struct sock;

#include <linux/compat.h>

struct compat_msghdr {
        compat_uptr_t   msg_name;       /* void * */
        compat_int_t    msg_namelen;
        compat_uptr_t   msg_iov;        /* struct compat_iovec * */
        compat_size_t   msg_iovlen;
        compat_uptr_t   msg_control;    /* void * */
        compat_size_t   msg_controllen;
        compat_uint_t   msg_flags;
};

struct compat_mmsghdr {
        struct compat_msghdr msg_hdr;
        compat_uint_t        msg_len;
};

struct compat_cmsghdr {
        compat_size_t   cmsg_len;
        compat_int_t    cmsg_level;
        compat_int_t    cmsg_type;
};

struct compat_rtentry {
        u32             rt_pad1;
        struct sockaddr rt_dst;         /* target address               */
        struct sockaddr rt_gateway;     /* gateway addr (RTF_GATEWAY)   */
        struct sockaddr rt_genmask;     /* target network mask (IP)     */
        unsigned short  rt_flags;
        short           rt_pad2;
        u32             rt_pad3;
        unsigned char   rt_tos;
        unsigned char   rt_class;
        short           rt_pad4;
        short           rt_metric;      /* +1 for binary compatibility! */
        compat_uptr_t   rt_dev;         /* forcing the device at add    */
        u32             rt_mtu;         /* per route MTU/Window         */
        u32             rt_window;      /* Window clamping              */
        unsigned short  rt_irtt;        /* Initial RTT                  */
};

int __get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr *msg,
                        struct sockaddr __user **save_addr);
int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *,
                      struct sockaddr __user **, struct iovec **);
int put_cmsg_compat(struct msghdr*, int, int, int, void *);

int cmsghdr_from_user_compat_to_kern(struct msghdr *, struct sock *,
                                     unsigned char *, int);

struct compat_group_req {
        __u32                            gr_interface;
        struct __kernel_sockaddr_storage gr_group
                __aligned(4);
} __packed;

struct compat_group_source_req {
        __u32                            gsr_interface;
        struct __kernel_sockaddr_storage gsr_group
                __aligned(4);
        struct __kernel_sockaddr_storage gsr_source
                __aligned(4);
} __packed;

struct compat_group_filter {
        union {
                struct {
                        __u32                            gf_interface_aux;
                        struct __kernel_sockaddr_storage gf_group_aux
                                __aligned(4);
                        __u32                            gf_fmode_aux;
                        __u32                            gf_numsrc_aux;
                        struct __kernel_sockaddr_storage gf_slist[1]
                                __aligned(4);
                } __packed;
                struct {
                        __u32                            gf_interface;
                        struct __kernel_sockaddr_storage gf_group
                                __aligned(4);
                        __u32                            gf_fmode;
                        __u32                            gf_numsrc;
                        struct __kernel_sockaddr_storage gf_slist_flex[]
                                __aligned(4);
                } __packed;
        };
} __packed;

#endif /* NET_COMPAT_H */