RDMA/rxe: Fix data copy for IB_SEND_INLINE

commit 03fa18a992d5626fd7bf3557a52e826bf8b326b3 upstream.

For RDMA Send and Write with IB_SEND_INLINE, the memory buffers
specified in sge list will be placed inline in the Send Request.

The data should be copied by CPU from the virtual addresses of
corresponding sge list DMA addresses.

Cc: stable@kernel.org
Fixes: 8d7c7c0eeb74 ("RDMA: Add ib_virt_dma_to_page()")
Signed-off-by: Honggang LI <honggangli@163.com>
Link: https://lore.kernel.org/r/20240516095052.542767-1-honggangli@163.com
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c
index 0930350522e38f95a985a05cab6e75b53ad762fe..9f46b9f74825ff58b01252f7111449a95304ce86 100644 (file)
--- a/drivers/infiniband/sw/rxe/rxe_verbs.c
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.c
@@ -812,7 +812,7 @@ static void copy_inline_data_to_wqe(struct rxe_send_wqe *wqe,
        int i;
 
        for (i = 0; i < ibwr->num_sge; i++, sge++) {
-               memcpy(p, ib_virt_dma_to_page(sge->addr), sge->length);
+               memcpy(p, ib_virt_dma_to_ptr(sge->addr), sge->length);
                p += sge->length;
        }
 }