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enic: mask off some reserved bits in CQ descriptor for future use

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Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Scott Feldman
2008-11-21 21:28:40 -08:00
committed by David S. Miller
parent 27372bf5fa
commit cb3c766975
1 changed files with 3 additions and 2 deletions
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5
drivers/net/enic/cq_desc.h
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@@ -44,9 +44,10 @@ struct cq_desc {
u8 type_color; u8 type_color;
}; };
#define CQ_DESC_TYPE_BITS 7 #define CQ_DESC_TYPE_BITS 4
#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1) #define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1)
#define CQ_DESC_COLOR_MASK 1 #define CQ_DESC_COLOR_MASK 1
#define CQ_DESC_COLOR_SHIFT 7
#define CQ_DESC_Q_NUM_BITS 10 #define CQ_DESC_Q_NUM_BITS 10
#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1) #define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1)
#define CQ_DESC_COMP_NDX_BITS 12 #define CQ_DESC_COMP_NDX_BITS 12
@@ -58,7 +59,7 @@ static inline void cq_desc_dec(const struct cq_desc *desc_arg,
const struct cq_desc *desc = desc_arg; const struct cq_desc *desc = desc_arg;
const u8 type_color = desc->type_color; const u8 type_color = desc->type_color;
*color = (type_color >> CQ_DESC_TYPE_BITS) & CQ_DESC_COLOR_MASK; *color = (type_color >> CQ_DESC_COLOR_SHIFT) & CQ_DESC_COLOR_MASK;
/* /*
* Make sure color bit is read from desc *before* other fields * Make sure color bit is read from desc *before* other fields