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bnxt_en: Fix context memory allocation. 

When allocating memory pages for context memory, if the last page table
should be fully populated, the current code will set nr_pages to 0 when
calling bnxt_alloc_ctx_mem_blk().  This will cause the last page table
to be completely blank and causing some RDMA failures.

Fix it by setting the last page table's nr_pages to the remainder only
if it is non-zero.

Fixes: 08fe9d1816 ("bnxt_en: Add Level 2 context memory paging support.")
Reported-by: Eric Davis <eric.davis@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2019-01-12 00:13:05 -05:00 committed by David S. Miller
parent 0b815023a1
commit 6ef982dec7
1 changed files with 6 additions and 3 deletions
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9
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -6222,9 +6222,12 @@ static int bnxt_alloc_ctx_pg_tbls(struct bnxt *bp,
rmem->pg_tbl_map = ctx_pg->ctx_dma_arr[i];
rmem->depth = 1;
rmem->nr_pages = MAX_CTX_PAGES;
if (i == (nr_tbls - 1))
rmem->nr_pages = ctx_pg->nr_pages %
MAX_CTX_PAGES;
if (i == (nr_tbls - 1)) {
int rem = ctx_pg->nr_pages % MAX_CTX_PAGES;
if (rem)
rmem->nr_pages = rem;
}
rc = bnxt_alloc_ctx_mem_blk(bp, pg_tbl);
if (rc)
break;