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authorScott Feldman <scofeldm@cisco.com>2008-11-22 00:28:40 -0500
committerDavid S. Miller <davem@davemloft.net>2008-11-22 00:28:40 -0500
commitcb3c766975985885e64e20cc72c4a36d90da2b30 (patch)
tree9ca794b1c79a5417f489a82792019f8bd6b93ec8
parent27372bf5fa5ffc0fee3ddb486a0da942295fd8e0 (diff)
enic: mask off some reserved bits in CQ descriptor for future use
Signed-off-by: Scott Feldman <scofeldm@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/enic/cq_desc.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/enic/cq_desc.h b/drivers/net/enic/cq_desc.h
index c036a8bfd043..1eb289f773bf 100644
--- a/drivers/net/enic/cq_desc.h
+++ b/drivers/net/enic/cq_desc.h
@@ -44,9 +44,10 @@ struct cq_desc {
44 u8 type_color; 44 u8 type_color;
45}; 45};
46 46
47#define CQ_DESC_TYPE_BITS 7 47#define CQ_DESC_TYPE_BITS 4
48#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1) 48#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1)
49#define CQ_DESC_COLOR_MASK 1 49#define CQ_DESC_COLOR_MASK 1
50#define CQ_DESC_COLOR_SHIFT 7
50#define CQ_DESC_Q_NUM_BITS 10 51#define CQ_DESC_Q_NUM_BITS 10
51#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1) 52#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1)
52#define CQ_DESC_COMP_NDX_BITS 12 53#define CQ_DESC_COMP_NDX_BITS 12
@@ -58,7 +59,7 @@ static inline void cq_desc_dec(const struct cq_desc *desc_arg,
58 const struct cq_desc *desc = desc_arg; 59 const struct cq_desc *desc = desc_arg;
59 const u8 type_color = desc->type_color; 60 const u8 type_color = desc->type_color;
60 61
61 *color = (type_color >> CQ_DESC_TYPE_BITS) & CQ_DESC_COLOR_MASK; 62 *color = (type_color >> CQ_DESC_COLOR_SHIFT) & CQ_DESC_COLOR_MASK;
62 63
63 /* 64 /*
64 * Make sure color bit is read from desc *before* other fields 65 * Make sure color bit is read from desc *before* other fields