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xen-netback: fix extra_info handling in xenvif_tx_err()

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Patch 562abd39 "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 <paul.durrant@citrix.com>
Reported-by: Jan Beulich <JBeulich@suse.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paul Durrant 2016-05-12 14:43:03 +01:00 committed by David S. Miller
parent 2073dbad17
commit 72eec92acc
1 changed files with 1 additions and 0 deletions
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drivers/net/xen-netback/netback.c
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@ -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;
}