Commit fe5fb192 authored by Li Lingfeng's avatar Li Lingfeng
Browse files

scsi: reserve space for structures in scsi 

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8ZUL1



--------------------------------

Reserve space for structure libfc_cmd_priv/fcoe_percpu_s/iscsi_task/
iscsi_cmd/iscsi_conn/iscsi_session/iscsi_host/scsi_cmnd/scsi_device/
scsi_exec_args/scsi_device_handler/scsi_driver/scsi_eh_save/
scsi_host_template/Scsi_Host/scsi_target.

Signed-off-by: default avatarLi Lingfeng <lilingfeng3@huawei.com>
parent ad149a39

include/scsi/libfc.h

+4 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include <linux/if.h>

#include <linux/percpu.h>

#include <linux/refcount.h>

#include <linux/kabi.h>



#include <scsi/scsi_transport.h>

#include <scsi/scsi_transport_fc.h>
@@ -358,6 +359,9 @@ struct libfc_cmd_priv { 
	struct fc_fcp_pkt *fsp;

	u32 resid_len;

	u8 status;



	KABI_RESERVE(1)

	KABI_RESERVE(2)

};



/*

include/scsi/libfcoe.h

+4 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/workqueue.h>

#include <linux/local_lock.h>

#include <linux/random.h>

#include <linux/kabi.h>

#include <scsi/fc/fc_fcoe.h>

#include <scsi/libfc.h>

#include <scsi/fcoe_sysfs.h>
@@ -329,6 +330,9 @@ struct fcoe_percpu_s { 
	struct page *crc_eof_page;

	int crc_eof_offset;

	local_lock_t lock;



	KABI_RESERVE(1)

	KABI_RESERVE(2)

};



/**

include/scsi/libiscsi.h

+34 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/workqueue.h>

#include <linux/kfifo.h>

#include <linux/refcount.h>

#include <linux/kabi.h>

#include <scsi/iscsi_proto.h>

#include <scsi/iscsi_if.h>

#include <scsi/scsi_cmnd.h>
@@ -133,6 +134,12 @@ struct iscsi_task { 
	refcount_t		refcount;

	struct list_head	running;	/* running cmd list */

	void			*dd_data;	/* driver/transport data */



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

	KABI_RESERVE(4)

	KABI_RESERVE(5)

};



static inline int iscsi_task_has_unsol_data(struct iscsi_task *task)
@@ -156,6 +163,9 @@ static inline bool iscsi_task_is_completed(struct iscsi_task *task) 
struct iscsi_cmd {

	struct iscsi_task	*task;

	int			age;



	KABI_RESERVE(1)

	KABI_RESERVE(2)

};



static inline struct iscsi_cmd *iscsi_cmd(struct scsi_cmnd *cmd)
@@ -256,6 +266,17 @@ struct iscsi_conn { 
	/* custom statistics */

	uint32_t		eh_abort_cnt;

	uint32_t		fmr_unalign_cnt;



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

	KABI_RESERVE(4)

	KABI_RESERVE(5)

	KABI_RESERVE(6)

	KABI_RESERVE(7)

	KABI_RESERVE(8)

	KABI_RESERVE(9)

	KABI_RESERVE(10)

};



struct iscsi_pool {
@@ -363,6 +384,15 @@ struct iscsi_session { 
	struct iscsi_task	**cmds;		/* Original Cmds arr */

	struct iscsi_pool	cmdpool;	/* PDU's pool */

	void			*dd_data;	/* LLD private data */



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

	KABI_RESERVE(4)

	KABI_RESERVE(5)

	KABI_RESERVE(6)

	KABI_RESERVE(7)

	KABI_RESERVE(8)

};



enum {
@@ -383,6 +413,10 @@ struct iscsi_host { 
	int			state;



	struct workqueue_struct	*workq;



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

};



/*

include/scsi/scsi_cmnd.h

+4 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <linux/types.h>

#include <linux/timer.h>

#include <linux/scatterlist.h>

#include <linux/kabi.h>

#include <scsi/scsi_device.h>



struct Scsi_Host;
@@ -141,6 +142,9 @@ struct scsi_cmnd { 
					 * to be at an address < 16Mb). */



	int result;		/* Status code from lower level driver */



	KABI_RESERVE(1)

	KABI_RESERVE(2)

};



/* Variant of blk_mq_rq_from_pdu() that verifies the type of its argument. */

include/scsi/scsi_device.h

+23 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <scsi/scsi.h>

#include <linux/atomic.h>

#include <linux/sbitmap.h>

#include <linux/kabi.h>



struct bsg_device;

struct device;
@@ -284,6 +285,15 @@ struct scsi_device { 
	struct mutex		state_mutex;

	enum scsi_device_state sdev_state;

	struct task_struct	*quiesced_by;



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

	KABI_RESERVE(4)

	KABI_RESERVE(5)

	KABI_RESERVE(6)

	KABI_RESERVE(7)

	KABI_RESERVE(8)

	unsigned long		sdev_data[];

} __attribute__((aligned(sizeof(unsigned long))));
@@ -370,6 +380,17 @@ struct scsi_target { 
	char			scsi_level;

	enum scsi_target_state	state;

	void 			*hostdata; /* available to low-level driver */



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

	KABI_RESERVE(4)

	KABI_RESERVE(5)

	KABI_RESERVE(6)

	KABI_RESERVE(7)

	KABI_RESERVE(8)

	KABI_RESERVE(9)



	unsigned long		starget_data[]; /* for the transport */

	/* starget_data must be the last element!!!! */

} __attribute__((aligned(sizeof(unsigned long))));
@@ -498,6 +519,8 @@ struct scsi_exec_args { 
	blk_mq_req_flags_t req_flags;	/* BLK_MQ_REQ flags */

	int scmd_flags;			/* SCMD flags */

	int *resid;			/* residual length */



	KABI_RESERVE(1)

};



int scsi_execute_cmd(struct scsi_device *sdev, const unsigned char *cmd,