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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * Management Component Transport Protocol (MCTP)4 *5 * Copyright (c) 2021 Code Construct6 * Copyright (c) 2021 Google7 */8 9#ifndef __UAPI_MCTP_H10#define __UAPI_MCTP_H11 12#include <linux/types.h>13#include <linux/socket.h>14#include <linux/netdevice.h>15 16typedef __u8 mctp_eid_t;17 18struct mctp_addr {19 mctp_eid_t s_addr;20};21 22struct 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 32struct 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 0x041 42#define MCTP_ADDR_NULL 0x0043#define MCTP_ADDR_ANY 0xff44 45#define MCTP_TAG_MASK 0x0746#define MCTP_TAG_OWNER 0x0847#define MCTP_TAG_PREALLOC 0x1048 49#define MCTP_OPT_ADDR_EXT 150 51#define SIOCMCTPALLOCTAG (SIOCPROTOPRIVATE + 0)52#define SIOCMCTPDROPTAG (SIOCPROTOPRIVATE + 1)53#define SIOCMCTPALLOCTAG2 (SIOCPROTOPRIVATE + 2)54#define SIOCMCTPDROPTAG2 (SIOCPROTOPRIVATE + 3)55 56/* Deprecated: use mctp_ioc_tag_ctl2 / TAG2 ioctls instead, which defines the57 * MCTP network ID as part of the allocated tag. Using this assumes the default58 * net ID for allocated tags, which may not give correct behaviour on system59 * with multiple networks configured.60 */61struct mctp_ioc_tag_ctl {62 mctp_eid_t peer_addr;63 64 /* For SIOCMCTPALLOCTAG: must be passed as zero, kernel will65 * populate with the allocated tag value. Returned tag value will66 * always have TO and PREALLOC set.67 *68 * For SIOCMCTPDROPTAG: userspace provides tag value to drop, from69 * a prior SIOCMCTPALLOCTAG call (and so must have TO and PREALLOC set).70 */71 __u8 tag;72 __u16 flags;73};74 75struct mctp_ioc_tag_ctl2 {76 /* Peer details: network ID, peer EID, local EID. All set by the77 * caller.78 *79 * Local EID must be MCTP_ADDR_NULL or MCTP_ADDR_ANY in current80 * kernels.81 */82 unsigned int net;83 mctp_eid_t peer_addr;84 mctp_eid_t local_addr;85 86 /* Set by caller, but no flags defined currently. Must be 0 */87 __u16 flags;88 89 /* For SIOCMCTPALLOCTAG2: must be passed as zero, kernel will90 * populate with the allocated tag value. Returned tag value will91 * always have TO and PREALLOC set.92 *93 * For SIOCMCTPDROPTAG2: userspace provides tag value to drop, from94 * a prior SIOCMCTPALLOCTAG2 call (and so must have TO and PREALLOC set).95 */96 __u8 tag;97 98};99 100#endif /* __UAPI_MCTP_H */101