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2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/net/smc/smc_ib.h
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@@ -14,6 +14,8 @@
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 #include <linux/interrupt.h>
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 #include <linux/if_ether.h>
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+#include <linux/mutex.h>
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+#include <linux/wait.h>
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 #include <rdma/ib_verbs.h>
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 #include <net/smc.h>
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@@ -24,7 +26,7 @@
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 struct smc_ib_devices {			/* list of smc ib devices definition */
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 	struct list_head	list;
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-	spinlock_t		lock;	/* protects list of smc ib devices */
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+	struct mutex		mutex;	/* protects list of smc ib devices */
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 };
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 extern struct smc_ib_devices	smc_ib_devices; /* list of smc ib devices */
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@@ -42,9 +44,15 @@
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 						/* mac address per port*/
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 	u8			pnetid[SMC_MAX_PORTS][SMC_MAX_PNETID_LEN];
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 						/* pnetid per port */
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+	bool			pnetid_by_user[SMC_MAX_PORTS];
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+						/* pnetid defined by user? */
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 	u8			initialized : 1; /* ib dev CQ, evthdl done */
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 	struct work_struct	port_event_work;
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 	unsigned long		port_event_mask;
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+	DECLARE_BITMAP(ports_going_away, SMC_MAX_PORTS);
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+	atomic_t		lnk_cnt;	/* number of links on ibdev */
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+	wait_queue_head_t	lnks_deleted;	/* wait 4 removal of all links*/
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+	struct mutex		mutex;		/* protect dev setup+cleanup */
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 };
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 struct smc_buf_desc;
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@@ -53,10 +61,10 @@
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 int smc_ib_register_client(void) __init;
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 void smc_ib_unregister_client(void);
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 bool smc_ib_port_active(struct smc_ib_device *smcibdev, u8 ibport);
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-int smc_ib_buf_map_sg(struct smc_ib_device *smcibdev,
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+int smc_ib_buf_map_sg(struct smc_link *lnk,
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 		      struct smc_buf_desc *buf_slot,
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 		      enum dma_data_direction data_direction);
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-void smc_ib_buf_unmap_sg(struct smc_ib_device *smcibdev,
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+void smc_ib_buf_unmap_sg(struct smc_link *lnk,
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 			 struct smc_buf_desc *buf_slot,
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 			 enum dma_data_direction data_direction);
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 void smc_ib_dealloc_protection_domain(struct smc_link *lnk);
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@@ -66,16 +74,18 @@
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 int smc_ib_ready_link(struct smc_link *lnk);
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 int smc_ib_modify_qp_rts(struct smc_link *lnk);
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 int smc_ib_modify_qp_reset(struct smc_link *lnk);
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+int smc_ib_modify_qp_error(struct smc_link *lnk);
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 long smc_ib_setup_per_ibdev(struct smc_ib_device *smcibdev);
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 int smc_ib_get_memory_region(struct ib_pd *pd, int access_flags,
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-			     struct smc_buf_desc *buf_slot);
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+			     struct smc_buf_desc *buf_slot, u8 link_idx);
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 void smc_ib_put_memory_region(struct ib_mr *mr);
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-void smc_ib_sync_sg_for_cpu(struct smc_ib_device *smcibdev,
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+void smc_ib_sync_sg_for_cpu(struct smc_link *lnk,
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 			    struct smc_buf_desc *buf_slot,
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 			    enum dma_data_direction data_direction);
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-void smc_ib_sync_sg_for_device(struct smc_ib_device *smcibdev,
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+void smc_ib_sync_sg_for_device(struct smc_link *lnk,
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 			       struct smc_buf_desc *buf_slot,
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 			       enum dma_data_direction data_direction);
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 int smc_ib_determine_gid(struct smc_ib_device *smcibdev, u8 ibport,
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 			 unsigned short vlan_id, u8 gid[], u8 *sgid_index);
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+bool smc_ib_is_valid_local_systemid(void);
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 #endif