From: David Daney <ddaney.cavm@gmail.com>
To: netdev@vger.kernel.org, "David S. Miller" <davem@davemloft.net>
Cc: linux-mips@linux-mips.org, David Daney <david.daney@cavium.com>
Subject: [PATCH 2/2] netdev: octeon_mgmt: Fix structure layout for little-endian.
Date: Wed, 19 Jun 2013 17:40:20 -0700 [thread overview]
Message-ID: <1371688820-4585-3-git-send-email-ddaney.cavm@gmail.com> (raw)
In-Reply-To: <1371688820-4585-1-git-send-email-ddaney.cavm@gmail.com>
From: David Daney <david.daney@cavium.com>
The C ABI reverses the bitfield fill order when compiled as
little-endian.
Signed-off-by: David Daney <david.daney@cavium.com>
---
drivers/net/ethernet/octeon/octeon_mgmt.c | 22 +++++++++++++++-------
1 file changed, 15 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/octeon/octeon_mgmt.c b/drivers/net/ethernet/octeon/octeon_mgmt.c
index 1ef4148..622aa75 100644
--- a/drivers/net/ethernet/octeon/octeon_mgmt.c
+++ b/drivers/net/ethernet/octeon/octeon_mgmt.c
@@ -46,17 +46,25 @@
union mgmt_port_ring_entry {
u64 d64;
struct {
- u64 reserved_62_63:2;
+#define RING_ENTRY_CODE_DONE 0xf
+#define RING_ENTRY_CODE_MORE 0x10
+#ifdef __BIG_ENDIAN_BITFIELD
+ u64 reserved_62_63:2;
/* Length of the buffer/packet in bytes */
- u64 len:14;
+ u64 len:14;
/* For TX, signals that the packet should be timestamped */
- u64 tstamp:1;
+ u64 tstamp:1;
/* The RX error code */
- u64 code:7;
-#define RING_ENTRY_CODE_DONE 0xf
-#define RING_ENTRY_CODE_MORE 0x10
+ u64 code:7;
/* Physical address of the buffer */
- u64 addr:40;
+ u64 addr:40;
+#else
+ u64 addr:40;
+ u64 code:7;
+ u64 tstamp:1;
+ u64 len:14;
+ u64 reserved_62_63:2;
+#endif
} s;
};
--
1.7.11.7
next prev parent reply other threads:[~2013-06-20 0:40 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-20 0:40 [PATCH 0/2] netdev: octeon_mgmt minor fixes David Daney
2013-06-20 0:40 ` [PATCH 1/2] netdev: octeon_mgmt: Correct tx IFG workaround David Daney
2013-06-20 1:08 ` Joe Perches
2013-06-20 1:28 ` David Daney
2013-06-20 1:37 ` Joe Perches
2013-06-20 1:47 ` David Daney
2013-06-20 0:40 ` David Daney [this message]
2013-06-20 9:47 ` [PATCH 2/2] netdev: octeon_mgmt: Fix structure layout for little-endian David Laight
2013-06-27 10:40 ` Ralf Baechle
2013-06-20 5:13 ` [PATCH 0/2] netdev: octeon_mgmt minor fixes David Miller
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