xen-netback: fix extra_info handling in xenvif_tx_err()

Patch 562abd3 "xen-netback: support multiple extra info fragments passed from frontend" contained a mistake which can result in an in- correct number of responses being generated when handling errors encountered when processing packets containing extra info fragments. This patch fixes the problem. Signed-off-by: Paul Durrant <[email protected]> Reported-by: Jan Beulich <[email protected]> Cc: Wei Liu <[email protected]> Acked-by: Wei Liu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
kyagi · May 13, 2016 · 72eec92 · 72eec92
1 parent 2073dba
commit 72eec92
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
@@ -711,6 +711,7 @@ static void xenvif_tx_err(struct xenvif_queue *queue,
 		if (cons == end)
 			break;
 		RING_COPY_REQUEST(&queue->tx, cons++, txp);
+		extra_count = 0; /* only the first frag can have extras */
 	} while (1);
 	queue->tx.req_cons = cons;
 }