[SCSI] libfc: provide space for LLD after remote port structure (f90377ab) · Commits · 戴 / test

Add pre-zeroed space after the allocation for fc_rport_priv for use by the lower-level driver. This is primarily for VN2VN FIP mode, but could be used in other ways someday. The space required is specified in lport->rport_priv_size. Signed-off-by:

Joe Eykholt <jeykholt@cisco.com> Signed-off-by:

Robert Love <robert.w.love@intel.com> Signed-off-by:

James Bottomley <James.Bottomley@suse.de>

drivers/scsi/libfc/fc_rport.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -127,7 +127,7 @@ static struct fc_rport_priv fc_rport_create(struct fc_lport lport,
		if (rdata)
		return rdata;

		rdata = kzalloc(sizeof(*rdata), GFP_KERNEL);
		rdata = kzalloc(sizeof(*rdata) + lport->rport_priv_size, GFP_KERNEL);
		if (!rdata)
		return NULL;

include/scsi/libfc.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -799,6 +799,7 @@ struct fc_disc {
		* @mfs: The maximum Fibre Channel payload size
		* @max_retry_count: The maximum retry attempts
		* @max_rport_retry_count: The maximum remote port retry attempts
		* @rport_priv_size: Size needed by driver after struct fc_rport_priv
		* @lro_xid: The maximum XID for LRO
		* @lso_max: The maximum large offload send size
		* @fcts: FC-4 type mask
		@@ -848,6 +849,7 @@ struct fc_lport {
		u32 mfs;
		u8 max_retry_count;
		u8 max_rport_retry_count;
		u16 rport_priv_size;
		u16 link_speed;
		u16 link_supported_speeds;
		u16 lro_xid;

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