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-rw-r--r--include/net/smc.h94
1 files changed, 94 insertions, 0 deletions
diff --git a/include/net/smc.h b/include/net/smc.h
new file mode 100644
index 0000000000..a002552be2
--- /dev/null
+++ b/include/net/smc.h
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Shared Memory Communications over RDMA (SMC-R) and RoCE
+ *
+ * Definitions for the SMC module (socket related)
+ *
+ * Copyright IBM Corp. 2016
+ *
+ * Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com>
+ */
+#ifndef _SMC_H
+#define _SMC_H
+
+#include <linux/device.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/wait.h>
+#include "linux/ism.h"
+
+struct sock;
+
+#define SMC_MAX_PNETID_LEN 16 /* Max. length of PNET id */
+
+struct smc_hashinfo {
+ rwlock_t lock;
+ struct hlist_head ht;
+};
+
+int smc_hash_sk(struct sock *sk);
+void smc_unhash_sk(struct sock *sk);
+
+/* SMCD/ISM device driver interface */
+struct smcd_dmb {
+ u64 dmb_tok;
+ u64 rgid;
+ u32 dmb_len;
+ u32 sba_idx;
+ u32 vlan_valid;
+ u32 vlan_id;
+ void *cpu_addr;
+ dma_addr_t dma_addr;
+};
+
+#define ISM_EVENT_DMB 0
+#define ISM_EVENT_GID 1
+#define ISM_EVENT_SWR 2
+
+#define ISM_RESERVED_VLANID 0x1FFF
+
+#define ISM_ERROR 0xFFFF
+
+struct smcd_dev;
+struct ism_client;
+
+struct smcd_ops {
+ int (*query_remote_gid)(struct smcd_dev *dev, u64 rgid, u32 vid_valid,
+ u32 vid);
+ int (*register_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb,
+ struct ism_client *client);
+ int (*unregister_dmb)(struct smcd_dev *dev, struct smcd_dmb *dmb);
+ int (*add_vlan_id)(struct smcd_dev *dev, u64 vlan_id);
+ int (*del_vlan_id)(struct smcd_dev *dev, u64 vlan_id);
+ int (*set_vlan_required)(struct smcd_dev *dev);
+ int (*reset_vlan_required)(struct smcd_dev *dev);
+ int (*signal_event)(struct smcd_dev *dev, u64 rgid, u32 trigger_irq,
+ u32 event_code, u64 info);
+ int (*move_data)(struct smcd_dev *dev, u64 dmb_tok, unsigned int idx,
+ bool sf, unsigned int offset, void *data,
+ unsigned int size);
+ int (*supports_v2)(void);
+ u8* (*get_system_eid)(void);
+ u64 (*get_local_gid)(struct smcd_dev *dev);
+ u16 (*get_chid)(struct smcd_dev *dev);
+ struct device* (*get_dev)(struct smcd_dev *dev);
+};
+
+struct smcd_dev {
+ const struct smcd_ops *ops;
+ void *priv;
+ struct list_head list;
+ spinlock_t lock;
+ struct smc_connection **conn;
+ struct list_head vlan;
+ struct workqueue_struct *event_wq;
+ u8 pnetid[SMC_MAX_PNETID_LEN];
+ bool pnetid_by_user;
+ struct list_head lgr_list;
+ spinlock_t lgr_lock;
+ atomic_t lgr_cnt;
+ wait_queue_head_t lgrs_deleted;
+ u8 going_away : 1;
+};
+
+#endif /* _SMC_H */