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RDMA/vmw_pvrdma: Use for_each_sg_dma_page iterator on umem SGL

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Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped
SGL and get the page DMA address. This avoids the extra loop to iterate
pages in the SGE when for_each_sg iterator is used.

Additionally, purge umem->page_shift usage in the driver as its only
relevant for ODP MRs. Use system page size and shift instead.

Signed-off-by: Shiraz, Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Shiraz, Saleem 2019-02-11 09:25:03 -06:00 committed by Jason Gunthorpe
parent b44e47eb06
commit f3e6d31179
1 changed files with 8 additions and 13 deletions
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21
drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c
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@ -183,25 +183,20 @@ int pvrdma_page_dir_insert_umem(struct pvrdma_page_dir *pdir,
struct ib_umem *umem, u64 offset)
{
u64 i = offset;
int j, entry;
int ret = 0, len = 0;
struct scatterlist *sg;
int ret = 0;
struct sg_dma_page_iter sg_iter;
if (offset >= pdir->npages)
return -EINVAL;
for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
len = sg_dma_len(sg) >> PAGE_SHIFT;
for (j = 0; j < len; j++) {
dma_addr_t addr = sg_dma_address(sg) +
(j << umem->page_shift);
for_each_sg_dma_page(umem->sg_head.sgl, &sg_iter, umem->nmap, 0) {
dma_addr_t addr = sg_page_iter_dma_address(&sg_iter);
ret = pvrdma_page_dir_insert_dma(pdir, i, addr);
if (ret)
goto exit;
ret = pvrdma_page_dir_insert_dma(pdir, i, addr);
if (ret)
goto exit;
i++;
}
i++;
}
exit: