IB/qib: Eliminate divide/mod in converting idx to egr buf pointer

[linux.git] / drivers / infiniband / hw / qib / qib.h

diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
index ee993e725d38e36d883180bc4e34ca6b2d862d79..97e623383e1a06699e60505111b84f8ae3efa008 100644 (file)
--- a/drivers/infiniband/hw/qib/qib.h
+++ b/drivers/infiniband/hw/qib/qib.h
@@ -171,7 +171,9 @@ struct qib_ctxtdata {
        /* how many alloc_pages() chunks in rcvegrbuf_pages */
        u32 rcvegrbuf_chunks;
        /* how many egrbufs per chunk */
-       u32 rcvegrbufs_perchunk;
+       u16 rcvegrbufs_perchunk;
+       /* ilog2 of above */
+       u16 rcvegrbufs_perchunk_shift;
        /* order for rcvegrbuf_pages */
        size_t rcvegrbuf_size;
        /* rcvhdrq size (for freeing) */
@@ -940,7 +942,9 @@ struct qib_devdata {
        /* chip address space used by 4k pio buffers */
        u32 align4k;
        /* size of each rcvegrbuffer */
-       u32 rcvegrbufsize;
+       u16 rcvegrbufsize;
+       /* log2 of above */
+       u16 rcvegrbufsize_shift;
        /* localbus width (1, 2,4,8,16,32) from config space  */
        u32 lbus_width;
        /* localbus speed in MHz */