From 10ebd8556b7990499c896a550e3d416b444211e6 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 02:23:07 +0000
Subject: [PATCH] add led
---
kernel/net/smc/smc_clc.h | 278 +++++++++++++++++++++++++++++++++++++++++-------------
1 files changed, 209 insertions(+), 69 deletions(-)
diff --git a/kernel/net/smc/smc_clc.h b/kernel/net/smc/smc_clc.h
index 18da89b..c579d1d 100644
--- a/kernel/net/smc/smc_clc.h
+++ b/kernel/net/smc/smc_clc.h
@@ -22,27 +22,39 @@
#define SMC_CLC_CONFIRM 0x03
#define SMC_CLC_DECLINE 0x04
-#define SMC_CLC_V1 0x1 /* SMC version */
#define SMC_TYPE_R 0 /* SMC-R only */
#define SMC_TYPE_D 1 /* SMC-D only */
+#define SMC_TYPE_N 2 /* neither SMC-R nor SMC-D */
#define SMC_TYPE_B 3 /* SMC-R and SMC-D */
#define CLC_WAIT_TIME (6 * HZ) /* max. wait time on clcsock */
+#define CLC_WAIT_TIME_SHORT HZ /* short wait time on clcsock */
#define SMC_CLC_DECL_MEM 0x01010000 /* insufficient memory resources */
#define SMC_CLC_DECL_TIMEOUT_CL 0x02010000 /* timeout w4 QP confirm link */
#define SMC_CLC_DECL_TIMEOUT_AL 0x02020000 /* timeout w4 QP add link */
#define SMC_CLC_DECL_CNFERR 0x03000000 /* configuration error */
#define SMC_CLC_DECL_PEERNOSMC 0x03010000 /* peer did not indicate SMC */
#define SMC_CLC_DECL_IPSEC 0x03020000 /* IPsec usage */
-#define SMC_CLC_DECL_NOSMCDEV 0x03030000 /* no SMC device found */
+#define SMC_CLC_DECL_NOSMCDEV 0x03030000 /* no SMC device found (R or D) */
+#define SMC_CLC_DECL_NOSMCDDEV 0x03030001 /* no SMC-D device found */
+#define SMC_CLC_DECL_NOSMCRDEV 0x03030002 /* no SMC-R device found */
#define SMC_CLC_DECL_MODEUNSUPP 0x03040000 /* smc modes do not match (R or D)*/
#define SMC_CLC_DECL_RMBE_EC 0x03050000 /* peer has eyecatcher in RMBE */
#define SMC_CLC_DECL_OPTUNSUPP 0x03060000 /* fastopen sockopt not supported */
+#define SMC_CLC_DECL_DIFFPREFIX 0x03070000 /* IP prefix / subnet mismatch */
+#define SMC_CLC_DECL_GETVLANERR 0x03080000 /* err to get vlan id of ip device*/
+#define SMC_CLC_DECL_ISMVLANERR 0x03090000 /* err to reg vlan id on ism dev */
+#define SMC_CLC_DECL_NOACTLINK 0x030a0000 /* no active smc-r link in lgr */
+#define SMC_CLC_DECL_NOSRVLINK 0x030b0000 /* SMC-R link from srv not found */
+#define SMC_CLC_DECL_VERSMISMAT 0x030c0000 /* SMC version mismatch */
+#define SMC_CLC_DECL_MAX_DMB 0x030d0000 /* SMC-D DMB limit exceeded */
#define SMC_CLC_DECL_SYNCERR 0x04000000 /* synchronization error */
#define SMC_CLC_DECL_PEERDECL 0x05000000 /* peer declined during handshake */
-#define SMC_CLC_DECL_INTERR 0x99990000 /* internal error */
-#define SMC_CLC_DECL_ERR_RTOK 0x99990001 /* rtoken handling failed */
-#define SMC_CLC_DECL_ERR_RDYLNK 0x99990002 /* ib ready link failed */
-#define SMC_CLC_DECL_ERR_REGRMB 0x99990003 /* reg rmb failed */
+#define SMC_CLC_DECL_INTERR 0x09990000 /* internal error */
+#define SMC_CLC_DECL_ERR_RTOK 0x09990001 /* rtoken handling failed */
+#define SMC_CLC_DECL_ERR_RDYLNK 0x09990002 /* ib ready link failed */
+#define SMC_CLC_DECL_ERR_REGRMB 0x09990003 /* reg rmb failed */
+
+#define SMC_FIRST_CONTACT_MASK 0b10 /* first contact bit within typev2 */
struct smc_clc_msg_hdr { /* header1 of clc messages */
u8 eyecatcher[4]; /* eye catcher */
@@ -50,13 +62,11 @@
__be16 length;
#if defined(__BIG_ENDIAN_BITFIELD)
u8 version : 4,
- flag : 1,
- rsvd : 1,
- path : 2;
+ typev2 : 2,
+ typev1 : 2;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
- u8 path : 2,
- rsvd : 1,
- flag : 1,
+ u8 typev1 : 2,
+ typev2 : 2,
version : 4;
#endif
} __packed; /* format defined in RFC7609 */
@@ -71,8 +81,6 @@
u8 mac[6]; /* mac of ib_device port */
};
-#define SMC_CLC_MAX_V6_PREFIX 8
-
/* Struct would be 4 byte aligned, but it is used in an array that is sent
* to peers and must conform to RFC7609, hence we need to use packed here.
*/
@@ -80,6 +88,44 @@
struct in6_addr prefix;
u8 prefix_len;
} __packed; /* format defined in RFC7609 */
+
+#if defined(__BIG_ENDIAN_BITFIELD)
+struct smc_clc_v2_flag {
+ u8 release : 4,
+ rsvd : 3,
+ seid : 1;
+};
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+struct smc_clc_v2_flag {
+ u8 seid : 1,
+ rsvd : 3,
+ release : 4;
+};
+#endif
+
+struct smc_clnt_opts_area_hdr {
+ u8 eid_cnt; /* number of user defined EIDs */
+ u8 ism_gid_cnt; /* number of ISMv2 GIDs */
+ u8 reserved1;
+ struct smc_clc_v2_flag flag;
+ u8 reserved2[2];
+ __be16 smcd_v2_ext_offset; /* SMC-Dv2 Extension Offset */
+};
+
+struct smc_clc_smcd_gid_chid {
+ __be64 gid; /* ISM GID */
+ __be16 chid; /* ISMv2 CHID */
+} __packed; /* format defined in
+ * IBM Shared Memory Communications Version 2
+ * (https://www.ibm.com/support/pages/node/6326337)
+ */
+
+struct smc_clc_v2_extension {
+ struct smc_clnt_opts_area_hdr hdr;
+ u8 roce[16]; /* RoCEv2 GID */
+ u8 reserved[16];
+ u8 user_eids[][SMC_MAX_EID_LEN];
+};
struct smc_clc_msg_proposal_prefix { /* prefix part of clc proposal message*/
__be32 outgoing_subnet; /* subnet mask */
@@ -89,8 +135,15 @@
} __aligned(4);
struct smc_clc_msg_smcd { /* SMC-D GID information */
- u64 gid; /* ISM GID of requestor */
- u8 res[32];
+ struct smc_clc_smcd_gid_chid ism; /* ISM native GID+CHID of requestor */
+ __be16 v2_ext_offset; /* SMC Version 2 Extension Offset */
+ u8 reserved[28];
+};
+
+struct smc_clc_smcd_v2_extension {
+ u8 system_eid[SMC_MAX_EID_LEN];
+ u8 reserved[16];
+ struct smc_clc_smcd_gid_chid gidchid[];
};
struct smc_clc_msg_proposal { /* clc proposal message sent by Linux */
@@ -99,64 +152,107 @@
__be16 iparea_offset; /* offset to IP address information area */
} __aligned(4);
-#define SMC_CLC_PROPOSAL_MAX_OFFSET 0x28
-#define SMC_CLC_PROPOSAL_MAX_PREFIX (SMC_CLC_MAX_V6_PREFIX * \
- sizeof(struct smc_clc_ipv6_prefix))
-#define SMC_CLC_MAX_LEN (sizeof(struct smc_clc_msg_proposal) + \
- SMC_CLC_PROPOSAL_MAX_OFFSET + \
- sizeof(struct smc_clc_msg_proposal_prefix) + \
- SMC_CLC_PROPOSAL_MAX_PREFIX + \
- sizeof(struct smc_clc_msg_trail))
+#define SMC_CLC_MAX_V6_PREFIX 8
+
+struct smc_clc_msg_proposal_area {
+ struct smc_clc_msg_proposal pclc_base;
+ struct smc_clc_msg_smcd pclc_smcd;
+ struct smc_clc_msg_proposal_prefix pclc_prfx;
+ struct smc_clc_ipv6_prefix pclc_prfx_ipv6[SMC_CLC_MAX_V6_PREFIX];
+ struct smc_clc_v2_extension pclc_v2_ext;
+ struct smc_clc_smcd_v2_extension pclc_smcd_v2_ext;
+ struct smc_clc_smcd_gid_chid pclc_gidchids[SMC_MAX_ISM_DEVS];
+ struct smc_clc_msg_trail pclc_trl;
+};
+
+struct smcr_clc_msg_accept_confirm { /* SMCR accept/confirm */
+ struct smc_clc_msg_local lcl;
+ u8 qpn[3]; /* QP number */
+ __be32 rmb_rkey; /* RMB rkey */
+ u8 rmbe_idx; /* Index of RMBE in RMB */
+ __be32 rmbe_alert_token; /* unique connection id */
+ #if defined(__BIG_ENDIAN_BITFIELD)
+ u8 rmbe_size : 4, /* buf size (compressed) */
+ qp_mtu : 4; /* QP mtu */
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 qp_mtu : 4,
+ rmbe_size : 4;
+#endif
+ u8 reserved;
+ __be64 rmb_dma_addr; /* RMB virtual address */
+ u8 reserved2;
+ u8 psn[3]; /* packet sequence number */
+} __packed;
+
+struct smcd_clc_msg_accept_confirm_common { /* SMCD accept/confirm */
+ u64 gid; /* Sender GID */
+ u64 token; /* DMB token */
+ u8 dmbe_idx; /* DMBE index */
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u8 dmbe_size : 4, /* buf size (compressed) */
+ reserved3 : 4;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 reserved3 : 4,
+ dmbe_size : 4;
+#endif
+ u16 reserved4;
+ __be32 linkid; /* Link identifier */
+} __packed;
+
+#define SMC_CLC_OS_ZOS 1
+#define SMC_CLC_OS_LINUX 2
+#define SMC_CLC_OS_AIX 3
+
+struct smc_clc_first_contact_ext {
+ u8 reserved1;
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u8 os_type : 4,
+ release : 4;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 release : 4,
+ os_type : 4;
+#endif
+ u8 reserved2[2];
+ u8 hostname[SMC_MAX_HOSTNAME_LEN];
+};
struct smc_clc_msg_accept_confirm { /* clc accept / confirm message */
struct smc_clc_msg_hdr hdr;
union {
- struct { /* SMC-R */
- struct smc_clc_msg_local lcl;
- u8 qpn[3]; /* QP number */
- __be32 rmb_rkey; /* RMB rkey */
- u8 rmbe_idx; /* Index of RMBE in RMB */
- __be32 rmbe_alert_token;/* unique connection id */
-#if defined(__BIG_ENDIAN_BITFIELD)
- u8 rmbe_size : 4, /* buf size (compressed) */
- qp_mtu : 4; /* QP mtu */
-#elif defined(__LITTLE_ENDIAN_BITFIELD)
- u8 qp_mtu : 4,
- rmbe_size : 4;
-#endif
- u8 reserved;
- __be64 rmb_dma_addr; /* RMB virtual address */
- u8 reserved2;
- u8 psn[3]; /* packet sequence number */
- struct smc_clc_msg_trail smcr_trl;
- /* eye catcher "SMCR" EBCDIC */
- } __packed;
+ struct smcr_clc_msg_accept_confirm r0; /* SMC-R */
struct { /* SMC-D */
- u64 gid; /* Sender GID */
- u64 token; /* DMB token */
- u8 dmbe_idx; /* DMBE index */
-#if defined(__BIG_ENDIAN_BITFIELD)
- u8 dmbe_size : 4, /* buf size (compressed) */
- reserved3 : 4;
-#elif defined(__LITTLE_ENDIAN_BITFIELD)
- u8 reserved3 : 4,
- dmbe_size : 4;
-#endif
- u16 reserved4;
- u32 linkid; /* Link identifier */
+ struct smcd_clc_msg_accept_confirm_common d0;
u32 reserved5[3];
- struct smc_clc_msg_trail smcd_trl;
- /* eye catcher "SMCD" EBCDIC */
- } __packed;
+ };
};
} __packed; /* format defined in RFC7609 */
+
+struct smc_clc_msg_accept_confirm_v2 { /* clc accept / confirm message */
+ struct smc_clc_msg_hdr hdr;
+ union {
+ struct smcr_clc_msg_accept_confirm r0; /* SMC-R */
+ struct { /* SMC-D */
+ struct smcd_clc_msg_accept_confirm_common d0;
+ __be16 chid;
+ u8 eid[SMC_MAX_EID_LEN];
+ u8 reserved5[8];
+ };
+ };
+};
struct smc_clc_msg_decline { /* clc decline message */
struct smc_clc_msg_hdr hdr;
u8 id_for_peer[SMC_SYSTEMID_LEN]; /* sender peer_id */
__be32 peer_diagnosis; /* diagnosis information */
- u8 reserved2[4];
- struct smc_clc_msg_trail trl; /* eye catcher "SMCR" EBCDIC */
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u8 os_type : 4,
+ reserved : 4;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 reserved : 4,
+ os_type : 4;
+#endif
+ u8 reserved2[3];
+ struct smc_clc_msg_trail trl; /* eye catcher "SMCD" or "SMCR" EBCDIC */
} __aligned(4);
/* determine start of the prefix area within the proposal message */
@@ -167,27 +263,71 @@
((u8 *)pclc + sizeof(*pclc) + ntohs(pclc->iparea_offset));
}
+static inline bool smcr_indicated(int smc_type)
+{
+ return smc_type == SMC_TYPE_R || smc_type == SMC_TYPE_B;
+}
+
+static inline bool smcd_indicated(int smc_type)
+{
+ return smc_type == SMC_TYPE_D || smc_type == SMC_TYPE_B;
+}
+
/* get SMC-D info from proposal message */
static inline struct smc_clc_msg_smcd *
smc_get_clc_msg_smcd(struct smc_clc_msg_proposal *prop)
{
- if (ntohs(prop->iparea_offset) != sizeof(struct smc_clc_msg_smcd))
+ if (smcd_indicated(prop->hdr.typev1) &&
+ ntohs(prop->iparea_offset) != sizeof(struct smc_clc_msg_smcd))
return NULL;
return (struct smc_clc_msg_smcd *)(prop + 1);
}
+static inline struct smc_clc_v2_extension *
+smc_get_clc_v2_ext(struct smc_clc_msg_proposal *prop)
+{
+ struct smc_clc_msg_smcd *prop_smcd = smc_get_clc_msg_smcd(prop);
+
+ if (!prop_smcd || !ntohs(prop_smcd->v2_ext_offset))
+ return NULL;
+
+ return (struct smc_clc_v2_extension *)
+ ((u8 *)prop_smcd +
+ offsetof(struct smc_clc_msg_smcd, v2_ext_offset) +
+ sizeof(prop_smcd->v2_ext_offset) +
+ ntohs(prop_smcd->v2_ext_offset));
+}
+
+static inline struct smc_clc_smcd_v2_extension *
+smc_get_clc_smcd_v2_ext(struct smc_clc_v2_extension *prop_v2ext)
+{
+ if (!prop_v2ext)
+ return NULL;
+ if (!ntohs(prop_v2ext->hdr.smcd_v2_ext_offset))
+ return NULL;
+
+ return (struct smc_clc_smcd_v2_extension *)
+ ((u8 *)prop_v2ext +
+ offsetof(struct smc_clc_v2_extension, hdr) +
+ offsetof(struct smc_clnt_opts_area_hdr, smcd_v2_ext_offset) +
+ sizeof(prop_v2ext->hdr.smcd_v2_ext_offset) +
+ ntohs(prop_v2ext->hdr.smcd_v2_ext_offset));
+}
+
struct smcd_dev;
+struct smc_init_info;
int smc_clc_prfx_match(struct socket *clcsock,
struct smc_clc_msg_proposal_prefix *prop);
int smc_clc_wait_msg(struct smc_sock *smc, void *buf, int buflen,
- u8 expected_type);
-int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info);
-int smc_clc_send_proposal(struct smc_sock *smc, int smc_type,
- struct smc_ib_device *smcibdev, u8 ibport, u8 gid[],
- struct smcd_dev *ismdev);
-int smc_clc_send_confirm(struct smc_sock *smc);
-int smc_clc_send_accept(struct smc_sock *smc, int srv_first_contact);
+ u8 expected_type, unsigned long timeout);
+int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info, u8 version);
+int smc_clc_send_proposal(struct smc_sock *smc, struct smc_init_info *ini);
+int smc_clc_send_confirm(struct smc_sock *smc, bool clnt_first_contact,
+ u8 version);
+int smc_clc_send_accept(struct smc_sock *smc, bool srv_first_contact,
+ u8 version);
+void smc_clc_init(void) __init;
#endif
--
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