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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/s390/include/asm/chsc.h
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/* SPDX-License-Identifier: GPL-2.0 */

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/*

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 * Copyright IBM Corp. 2020

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 *

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 * Author(s): Alexandra Winter <[email protected]>

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 *

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 * Interface for Channel Subsystem Call

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 */

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#ifndef _ASM_S390_CHSC_H

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#define _ASM_S390_CHSC_H

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#include <uapi/asm/chsc.h>

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/* struct from linux/notifier.h */

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struct notifier_block;

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/**

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 * Operation codes for CHSC PNSO:

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 *    PNSO_OC_NET_BRIDGE_INFO - only addresses that are visible to a bridgeport

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 *    PNSO_OC_NET_ADDR_INFO   - all addresses

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 */

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#define PNSO_OC_NET_BRIDGE_INFO		0

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#define PNSO_OC_NET_ADDR_INFO		3

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/**

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 * struct chsc_pnso_naid_l2 - network address information descriptor

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 * @nit:  Network interface token

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 * @addr_lnid: network address and logical network id (VLAN ID)

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 */

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struct chsc_pnso_naid_l2 {

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	u64 nit;

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	struct { u8 mac[6]; u16 lnid; } addr_lnid;

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} __packed;

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struct chsc_pnso_resume_token {

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	u64 t1;

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	u64 t2;

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} __packed;

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struct chsc_pnso_naihdr {

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	struct chsc_pnso_resume_token resume_token;

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	u32:32;

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	u32 instance;

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	u32:24;

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	u8 naids;

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	u32 reserved[3];

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} __packed;

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struct chsc_pnso_area {

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	struct chsc_header request;

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	u8:2;

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	u8 m:1;

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	u8:5;

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	u8:2;

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	u8 ssid:2;

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	u8 fmt:4;

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	u16 sch;

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	u8:8;

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	u8 cssid;

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	u16:16;

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	u8 oc;

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	u32:24;

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	struct chsc_pnso_resume_token resume_token;

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	u32 n:1;

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	u32:31;

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	u32 reserved[3];

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	struct chsc_header response;

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	u32:32;

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	struct chsc_pnso_naihdr naihdr;

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	struct chsc_pnso_naid_l2 entries[];

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} __packed __aligned(PAGE_SIZE);

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/*

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 * notifier interface - registered notifiers gets called on

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 * the following events:

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 * - ap config changed (CHSC_NOTIFY_AP_CFG)

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 */

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enum chsc_notify_type {

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	CHSC_NOTIFY_AP_CFG = 3,

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};

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int chsc_notifier_register(struct notifier_block *nb);

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int chsc_notifier_unregister(struct notifier_block *nb);

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#endif /* _ASM_S390_CHSC_H */

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