summaryrefslogtreecommitdiffstats
path: root/drivers/net/enic/vnic_wq.h
diff options
context:
space:
mode:
authorVasanthy Kolluri <vkolluri@cisco.com>2010-06-24 10:51:51 +0000
committerDavid S. Miller <davem@davemloft.net>2010-06-25 20:50:24 -0700
commitb5bab85c15ed3d1ae7f917a7c077086ac6c04572 (patch)
treee7a259fc15178a546cd9e4d0757ec040b4209bc6 /drivers/net/enic/vnic_wq.h
parent70feadf36df94dc0dc2f32fec4c131ecd75344f2 (diff)
downloadop-kernel-dev-b5bab85c15ed3d1ae7f917a7c077086ac6c04572.zip
op-kernel-dev-b5bab85c15ed3d1ae7f917a7c077086ac6c04572.tar.gz
enic: Use receive queue buffer blocks of 32/64 entries
Change the receive queue buffer allocations into blocks of 32 entries when ring size is less than 64, otherwise use 64 entries per block. Signed-off-by: Scott Feldman <scofeldm@cisco.com> Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com> Signed-off-by: Roopa Prabhu <roprabhu@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/enic/vnic_wq.h')
-rw-r--r--drivers/net/enic/vnic_wq.h14
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/net/enic/vnic_wq.h b/drivers/net/enic/vnic_wq.h
index 9c34d41..1c82139 100644
--- a/drivers/net/enic/vnic_wq.h
+++ b/drivers/net/enic/vnic_wq.h
@@ -60,12 +60,16 @@ struct vnic_wq_buf {
void *desc;
};
-/* Break the vnic_wq_buf allocations into blocks of 64 entries */
-#define VNIC_WQ_BUF_BLK_ENTRIES 64
-#define VNIC_WQ_BUF_BLK_SZ \
- (VNIC_WQ_BUF_BLK_ENTRIES * sizeof(struct vnic_wq_buf))
+/* Break the vnic_wq_buf allocations into blocks of 32/64 entries */
+#define VNIC_WQ_BUF_MIN_BLK_ENTRIES 32
+#define VNIC_WQ_BUF_DFLT_BLK_ENTRIES 64
+#define VNIC_WQ_BUF_BLK_ENTRIES(entries) \
+ ((unsigned int)((entries < VNIC_WQ_BUF_DFLT_BLK_ENTRIES) ? \
+ VNIC_WQ_BUF_MIN_BLK_ENTRIES : VNIC_WQ_BUF_DFLT_BLK_ENTRIES))
+#define VNIC_WQ_BUF_BLK_SZ(entries) \
+ (VNIC_WQ_BUF_BLK_ENTRIES(entries) * sizeof(struct vnic_wq_buf))
#define VNIC_WQ_BUF_BLKS_NEEDED(entries) \
- DIV_ROUND_UP(entries, VNIC_WQ_BUF_BLK_ENTRIES)
+ DIV_ROUND_UP(entries, VNIC_WQ_BUF_BLK_ENTRIES(entries))
#define VNIC_WQ_BUF_BLKS_MAX VNIC_WQ_BUF_BLKS_NEEDED(4096)
struct vnic_wq {
OpenPOWER on IntegriCloud