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authorPaul Durrant <Paul.Durrant@citrix.com>2016-03-10 12:30:27 +0000
committerDavid S. Miller <davem@davemloft.net>2016-03-13 22:08:01 -0400
commit562abd39a1902745bdcab266c7824cd6c5bc34d3 (patch)
treee4c6dd06060b89a11b76deb2cabd965a6d8582b0 /drivers/net/xen-netback/common.h
parent6b8abef5f833b03be1b5af491193477ad609ad35 (diff)
xen-netback: support multiple extra info fragments passed from frontend
The code does not currently support a frontend passing multiple extra info fragments to the backend in a tx request. The xenvif_get_extras() function handles multiple extra_info fragments but make_tx_response() assumes there is only ever a single extra info fragment. This patch modifies xenvif_get_extras() to pass back a count of extra info fragments, which is then passed to make_tx_response() (after possibly being stashed in pending_tx_info for deferred responses). Signed-off-by: Paul Durrant <paul.durrant@citrix.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>
Diffstat (limited to 'drivers/net/xen-netback/common.h')
-rw-r--r--drivers/net/xen-netback/common.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h
index 112825200d41..f44b38846420 100644
--- a/drivers/net/xen-netback/common.h
+++ b/drivers/net/xen-netback/common.h
@@ -52,6 +52,7 @@ typedef unsigned int pending_ring_idx_t;
struct pending_tx_info {
struct xen_netif_tx_request req; /* tx request */
+ unsigned int extra_count;
/* Callback data for released SKBs. The callback is always
* xenvif_zerocopy_callback, desc contains the pending_idx, which is
* also an index in pending_tx_info array. It is initialized in