lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[SCSI] libfc: add fc_frame_sid() and fc_frame_did() functions

Browse Source 
To pave the way for eliminating exchanges from incoming requests,
add simple inline fc_frame_sid() and fc_frame_did() functions
which get the FC_IDs from the frame header.  This can be almost
as efficient as getting them from the sequence/exchange.

Move ntohll, htonll, ntoh24 and hton24 to <scsi/fc_frame.h>
since we need them there and that's included by <scsi/libfc.h>

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>
This commit is contained in:
Joe Eykholt
2010-07-20 15:20:56 -07:00
committed by James Bottomley
parent 079ecd8cfe
commit 251748a99e
4 changed files with 54 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
include/scsi/libfc.h
View File

@@ -42,24 +42,6 @@
#define FC_EX_TIMEOUT 1 /* Exchange timeout */
#define FC_EX_CLOSED 2 /* Exchange closed */
/* some helpful macros */
#define ntohll(x) be64_to_cpu(x)
#define htonll(x) cpu_to_be64(x)
static inline u32 ntoh24(const u8 *p)
{
return (p[0] << 16) | (p[1] << 8) | p[2];
}
static inline void hton24(u8 *p, u32 v)
{
p[0] = (v >> 16) & 0xff;
p[1] = (v >> 8) & 0xff;
p[2] = v & 0xff;
}
/**
* enum fc_lport_state - Local port states
* @LPORT_ST_DISABLED: Disabled