rdma: fixed UAR writing at tx

Mohammed Hawari · bganne · commit 3ef653aa886e · 2020-11-25T10:35:01.000Z
Change-Id: Id81b4d27845c4e91cef90a4b8649662942d3cba1
Signed-off-by: Mohammed Hawari &lt;mohammed@hawari.fr&gt;
Type: fix
diff --git a/src/plugins/rdma/output.c b/src/plugins/rdma/output.c
@@ -100,7 +100,7 @@ rdma_device_output_tx_mlx5_doorbell (rdma_txq_t * txq, rdma_mlx5_wqe_t * last,
   CLIB_MEMORY_STORE_BARRIER ();
   txq->dv_sq_dbrec[MLX5_SND_DBR] = htobe32 (tail);
   CLIB_COMPILER_BARRIER ();
-  txq->dv_sq_db[0] = *(u64 *) (txq->dv_sq_wqes + (txq->tail & sq_mask));
+  txq->dv_sq_db[0] = *(u64 *) last;
 }
 
 static_always_inline void

Original file line number	Diff line number	Diff line change
`@@ -100,7 +100,7 @@ rdma_device_output_tx_mlx5_doorbell (rdma_txq_t * txq, rdma_mlx5_wqe_t * last,`
`100`	`100`	`CLIB_MEMORY_STORE_BARRIER ();`
`101`	`101`	`txq->dv_sq_dbrec[MLX5_SND_DBR] = htobe32 (tail);`
`102`	`102`	`CLIB_COMPILER_BARRIER ();`
`103`		`- txq->dv_sq_db[0] = (u64 ) (txq->dv_sq_wqes + (txq->tail & sq_mask));`
	`103`	`+ txq->dv_sq_db[0] = (u64 ) last;`
`104`	`104`	`}`
`105`	`105`
`106`	`106`	`static_always_inline void`