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Commit 6ef982de authored by Michael Chan's avatar Michael Chan Committed by David S. Miller
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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: 08fe9d18 ("bnxt_en: Add Level 2 context memory paging support.")
Reported-by: default avatarEric Davis <eric.davis@broadcom.com>
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0b815023

drivers/net/ethernet/broadcom/bnxt/bnxt.c

+6 −3
Original line number Diff line number Diff line
@@ -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;