^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Shared Memory Communications over RDMA (SMC-R) and RoCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * CLC (connection layer control) handshake over initial TCP socket to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * prepare for RDMA traffic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright IBM Corp. 2016
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #ifndef _SMC_CLC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define _SMC_CLC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <rdma/ib_verbs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "smc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define SMC_CLC_PROPOSAL 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define SMC_CLC_ACCEPT 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define SMC_CLC_CONFIRM 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define SMC_CLC_DECLINE 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define SMC_TYPE_R 0 /* SMC-R only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define SMC_TYPE_D 1 /* SMC-D only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define SMC_TYPE_N 2 /* neither SMC-R nor SMC-D */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define SMC_TYPE_B 3 /* SMC-R and SMC-D */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define CLC_WAIT_TIME (6 * HZ) /* max. wait time on clcsock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define CLC_WAIT_TIME_SHORT HZ /* short wait time on clcsock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define SMC_CLC_DECL_MEM 0x01010000 /* insufficient memory resources */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define SMC_CLC_DECL_TIMEOUT_CL 0x02010000 /* timeout w4 QP confirm link */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define SMC_CLC_DECL_TIMEOUT_AL 0x02020000 /* timeout w4 QP add link */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define SMC_CLC_DECL_CNFERR 0x03000000 /* configuration error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define SMC_CLC_DECL_PEERNOSMC 0x03010000 /* peer did not indicate SMC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define SMC_CLC_DECL_IPSEC 0x03020000 /* IPsec usage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define SMC_CLC_DECL_NOSMCDEV 0x03030000 /* no SMC device found (R or D) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define SMC_CLC_DECL_NOSMCDDEV 0x03030001 /* no SMC-D device found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define SMC_CLC_DECL_NOSMCRDEV 0x03030002 /* no SMC-R device found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define SMC_CLC_DECL_MODEUNSUPP 0x03040000 /* smc modes do not match (R or D)*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define SMC_CLC_DECL_RMBE_EC 0x03050000 /* peer has eyecatcher in RMBE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define SMC_CLC_DECL_OPTUNSUPP 0x03060000 /* fastopen sockopt not supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define SMC_CLC_DECL_DIFFPREFIX 0x03070000 /* IP prefix / subnet mismatch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define SMC_CLC_DECL_GETVLANERR 0x03080000 /* err to get vlan id of ip device*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define SMC_CLC_DECL_ISMVLANERR 0x03090000 /* err to reg vlan id on ism dev */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define SMC_CLC_DECL_NOACTLINK 0x030a0000 /* no active smc-r link in lgr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define SMC_CLC_DECL_NOSRVLINK 0x030b0000 /* SMC-R link from srv not found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define SMC_CLC_DECL_VERSMISMAT 0x030c0000 /* SMC version mismatch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define SMC_CLC_DECL_MAX_DMB 0x030d0000 /* SMC-D DMB limit exceeded */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define SMC_CLC_DECL_SYNCERR 0x04000000 /* synchronization error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define SMC_CLC_DECL_PEERDECL 0x05000000 /* peer declined during handshake */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define SMC_CLC_DECL_INTERR 0x09990000 /* internal error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define SMC_CLC_DECL_ERR_RTOK 0x09990001 /* rtoken handling failed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define SMC_CLC_DECL_ERR_RDYLNK 0x09990002 /* ib ready link failed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define SMC_CLC_DECL_ERR_REGRMB 0x09990003 /* reg rmb failed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define SMC_FIRST_CONTACT_MASK 0b10 /* first contact bit within typev2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct smc_clc_msg_hdr { /* header1 of clc messages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) u8 eyecatcher[4]; /* eye catcher */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) u8 type; /* proposal / accept / confirm / decline */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) __be16 length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #if defined(__BIG_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u8 version : 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) typev2 : 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) typev1 : 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #elif defined(__LITTLE_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) u8 typev1 : 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) typev2 : 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) version : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) } __packed; /* format defined in RFC7609 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct smc_clc_msg_trail { /* trailer of clc messages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) u8 eyecatcher[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct smc_clc_msg_local { /* header2 of clc messages */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) u8 id_for_peer[SMC_SYSTEMID_LEN]; /* unique system id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) u8 gid[16]; /* gid of ib_device port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) u8 mac[6]; /* mac of ib_device port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* Struct would be 4 byte aligned, but it is used in an array that is sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * to peers and must conform to RFC7609, hence we need to use packed here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct smc_clc_ipv6_prefix {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct in6_addr prefix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) u8 prefix_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) } __packed; /* format defined in RFC7609 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #if defined(__BIG_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct smc_clc_v2_flag {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) u8 release : 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) rsvd : 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) seid : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #elif defined(__LITTLE_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct smc_clc_v2_flag {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) u8 seid : 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) rsvd : 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) release : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct smc_clnt_opts_area_hdr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) u8 eid_cnt; /* number of user defined EIDs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) u8 ism_gid_cnt; /* number of ISMv2 GIDs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) u8 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct smc_clc_v2_flag flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) u8 reserved2[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) __be16 smcd_v2_ext_offset; /* SMC-Dv2 Extension Offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct smc_clc_smcd_gid_chid {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) __be64 gid; /* ISM GID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) __be16 chid; /* ISMv2 CHID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) } __packed; /* format defined in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * IBM Shared Memory Communications Version 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * (https://www.ibm.com/support/pages/node/6326337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) struct smc_clc_v2_extension {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct smc_clnt_opts_area_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) u8 roce[16]; /* RoCEv2 GID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) u8 reserved[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) u8 user_eids[][SMC_MAX_EID_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct smc_clc_msg_proposal_prefix { /* prefix part of clc proposal message*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) __be32 outgoing_subnet; /* subnet mask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) u8 prefix_len; /* number of significant bits in mask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) u8 reserved[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) u8 ipv6_prefixes_cnt; /* number of IPv6 prefixes in prefix array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) } __aligned(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct smc_clc_msg_smcd { /* SMC-D GID information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) struct smc_clc_smcd_gid_chid ism; /* ISM native GID+CHID of requestor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) __be16 v2_ext_offset; /* SMC Version 2 Extension Offset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) u8 reserved[28];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct smc_clc_smcd_v2_extension {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) u8 system_eid[SMC_MAX_EID_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) u8 reserved[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) struct smc_clc_smcd_gid_chid gidchid[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct smc_clc_msg_proposal { /* clc proposal message sent by Linux */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct smc_clc_msg_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) struct smc_clc_msg_local lcl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) __be16 iparea_offset; /* offset to IP address information area */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) } __aligned(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #define SMC_CLC_MAX_V6_PREFIX 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct smc_clc_msg_proposal_area {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct smc_clc_msg_proposal pclc_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct smc_clc_msg_smcd pclc_smcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) struct smc_clc_msg_proposal_prefix pclc_prfx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct smc_clc_ipv6_prefix pclc_prfx_ipv6[SMC_CLC_MAX_V6_PREFIX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct smc_clc_v2_extension pclc_v2_ext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct smc_clc_smcd_v2_extension pclc_smcd_v2_ext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct smc_clc_smcd_gid_chid pclc_gidchids[SMC_MAX_ISM_DEVS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct smc_clc_msg_trail pclc_trl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct smcr_clc_msg_accept_confirm { /* SMCR accept/confirm */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct smc_clc_msg_local lcl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) u8 qpn[3]; /* QP number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) __be32 rmb_rkey; /* RMB rkey */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) u8 rmbe_idx; /* Index of RMBE in RMB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) __be32 rmbe_alert_token; /* unique connection id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) #if defined(__BIG_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) u8 rmbe_size : 4, /* buf size (compressed) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) qp_mtu : 4; /* QP mtu */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) #elif defined(__LITTLE_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) u8 qp_mtu : 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) rmbe_size : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) u8 reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) __be64 rmb_dma_addr; /* RMB virtual address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) u8 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) u8 psn[3]; /* packet sequence number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) struct smcd_clc_msg_accept_confirm_common { /* SMCD accept/confirm */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) u64 gid; /* Sender GID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) u64 token; /* DMB token */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) u8 dmbe_idx; /* DMBE index */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) #if defined(__BIG_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) u8 dmbe_size : 4, /* buf size (compressed) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) reserved3 : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) #elif defined(__LITTLE_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) u8 reserved3 : 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) dmbe_size : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) u16 reserved4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) __be32 linkid; /* Link identifier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) #define SMC_CLC_OS_ZOS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) #define SMC_CLC_OS_LINUX 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) #define SMC_CLC_OS_AIX 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct smc_clc_first_contact_ext {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) u8 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) #if defined(__BIG_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) u8 os_type : 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) release : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #elif defined(__LITTLE_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) u8 release : 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) os_type : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) u8 reserved2[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) u8 hostname[SMC_MAX_HOSTNAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct smc_clc_msg_accept_confirm { /* clc accept / confirm message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) struct smc_clc_msg_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct smcr_clc_msg_accept_confirm r0; /* SMC-R */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct { /* SMC-D */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) struct smcd_clc_msg_accept_confirm_common d0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) u32 reserved5[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) } __packed; /* format defined in RFC7609 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) struct smc_clc_msg_accept_confirm_v2 { /* clc accept / confirm message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct smc_clc_msg_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) struct smcr_clc_msg_accept_confirm r0; /* SMC-R */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) struct { /* SMC-D */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct smcd_clc_msg_accept_confirm_common d0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) __be16 chid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) u8 eid[SMC_MAX_EID_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) u8 reserved5[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct smc_clc_msg_decline { /* clc decline message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) struct smc_clc_msg_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) u8 id_for_peer[SMC_SYSTEMID_LEN]; /* sender peer_id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) __be32 peer_diagnosis; /* diagnosis information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #if defined(__BIG_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) u8 os_type : 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) reserved : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #elif defined(__LITTLE_ENDIAN_BITFIELD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) u8 reserved : 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) os_type : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) u8 reserved2[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct smc_clc_msg_trail trl; /* eye catcher "SMCD" or "SMCR" EBCDIC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) } __aligned(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) /* determine start of the prefix area within the proposal message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) static inline struct smc_clc_msg_proposal_prefix *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) smc_clc_proposal_get_prefix(struct smc_clc_msg_proposal *pclc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) return (struct smc_clc_msg_proposal_prefix *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) ((u8 *)pclc + sizeof(*pclc) + ntohs(pclc->iparea_offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static inline bool smcr_indicated(int smc_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) return smc_type == SMC_TYPE_R || smc_type == SMC_TYPE_B;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static inline bool smcd_indicated(int smc_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) return smc_type == SMC_TYPE_D || smc_type == SMC_TYPE_B;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) /* get SMC-D info from proposal message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static inline struct smc_clc_msg_smcd *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) smc_get_clc_msg_smcd(struct smc_clc_msg_proposal *prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (smcd_indicated(prop->hdr.typev1) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) ntohs(prop->iparea_offset) != sizeof(struct smc_clc_msg_smcd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return (struct smc_clc_msg_smcd *)(prop + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static inline struct smc_clc_v2_extension *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) smc_get_clc_v2_ext(struct smc_clc_msg_proposal *prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct smc_clc_msg_smcd *prop_smcd = smc_get_clc_msg_smcd(prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (!prop_smcd || !ntohs(prop_smcd->v2_ext_offset))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return (struct smc_clc_v2_extension *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) ((u8 *)prop_smcd +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) offsetof(struct smc_clc_msg_smcd, v2_ext_offset) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) sizeof(prop_smcd->v2_ext_offset) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) ntohs(prop_smcd->v2_ext_offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) static inline struct smc_clc_smcd_v2_extension *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) smc_get_clc_smcd_v2_ext(struct smc_clc_v2_extension *prop_v2ext)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) if (!prop_v2ext)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) if (!ntohs(prop_v2ext->hdr.smcd_v2_ext_offset))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return (struct smc_clc_smcd_v2_extension *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) ((u8 *)prop_v2ext +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) offsetof(struct smc_clc_v2_extension, hdr) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) offsetof(struct smc_clnt_opts_area_hdr, smcd_v2_ext_offset) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) sizeof(prop_v2ext->hdr.smcd_v2_ext_offset) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) ntohs(prop_v2ext->hdr.smcd_v2_ext_offset));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) struct smcd_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) struct smc_init_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) int smc_clc_prfx_match(struct socket *clcsock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) struct smc_clc_msg_proposal_prefix *prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) int smc_clc_wait_msg(struct smc_sock *smc, void *buf, int buflen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) u8 expected_type, unsigned long timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info, u8 version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) int smc_clc_send_proposal(struct smc_sock *smc, struct smc_init_info *ini);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) int smc_clc_send_confirm(struct smc_sock *smc, bool clnt_first_contact,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) u8 version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) int smc_clc_send_accept(struct smc_sock *smc, bool srv_first_contact,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) u8 version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) void smc_clc_init(void) __init;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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