mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-03 17:40:04 +00:00
Code Issues Releases Wiki Activity

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

Browse source 
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
Show stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/net/enic/cq_desc.h
View file

@ -44,9 +44,10 @@ struct cq_desc {
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_COLOR_MASK 1
#define CQ_DESC_COLOR_SHIFT 7
#define CQ_DESC_Q_NUM_BITS 10
#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1)
#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 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