1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * Management Component Transport Protocol (MCTP) 4 * 5 * Copyright (c) 2021 Code Construct 6 * Copyright (c) 2021 Google 7 */ 8 9 #ifndef __UAPI_MCTP_H 10 #define __UAPI_MCTP_H 11 12 #include <linux/types.h> 13 #include <linux/socket.h> 14 #include <linux/netdevice.h> 15 16 typedef __u8 mctp_eid_t; 17 18 struct mctp_addr { 19 mctp_eid_t s_addr; 20 }; 21 22 struct sockaddr_mctp { 23 __kernel_sa_family_t smctp_family; 24 __u16 __smctp_pad0; 25 unsigned int smctp_network; 26 struct mctp_addr smctp_addr; 27 __u8 smctp_type; 28 __u8 smctp_tag; 29 __u8 __smctp_pad1; 30 }; 31 32 struct sockaddr_mctp_ext { 33 struct sockaddr_mctp smctp_base; 34 int smctp_ifindex; 35 __u8 smctp_halen; 36 __u8 __smctp_pad0[3]; 37 __u8 smctp_haddr[MAX_ADDR_LEN]; 38 }; 39 40 #define MCTP_NET_ANY 0x0 41 42 #define MCTP_ADDR_NULL 0x00 43 #define MCTP_ADDR_ANY 0xff 44 45 #define MCTP_TAG_MASK 0x07 46 #define MCTP_TAG_OWNER 0x08 47 #define MCTP_TAG_PREALLOC 0x10 48 49 #define MCTP_OPT_ADDR_EXT 1 50 51 #define SIOCMCTPALLOCTAG (SIOCPROTOPRIVATE + 0) 52 #define SIOCMCTPDROPTAG (SIOCPROTOPRIVATE + 1) 53 54 struct mctp_ioc_tag_ctl { 55 mctp_eid_t peer_addr; 56 57 /* For SIOCMCTPALLOCTAG: must be passed as zero, kernel will 58 * populate with the allocated tag value. Returned tag value will 59 * always have TO and PREALLOC set. 60 * 61 * For SIOCMCTPDROPTAG: userspace provides tag value to drop, from 62 * a prior SIOCMCTPALLOCTAG call (and so must have TO and PREALLOC set). 63 */ 64 __u8 tag; 65 __u16 flags; 66 }; 67 68 #endif /* __UAPI_MCTP_H */ 69