[Xen-devel] [PATCH] Re-define PKT_PROT_LEN to be big enough to handle maximal IPv4 and TCP options and phrase

[Paul Durrant <paul.durrant@xxxxxxxxxx>]

Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
---
 drivers/xen/netback/netback.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/xen/netback/netback.c b/drivers/xen/netback/netback.c
index c448675..1a4a20e 100644
--- a/drivers/xen/netback/netback.c
+++ b/drivers/xen/netback/netback.c
@@ -128,7 +128,7 @@ static inline int netif_get_page_ext(struct page *pg, 
unsigned int *_group, unsi
  * packet processing on them (netfilter, routing, etc). 72 is enough
  * to cover TCP+IP headers including options.
  */
-#define PKT_PROT_LEN 72
+#define PKT_PROT_LEN    (ETH_HLEN + 4 + (15 * 4) + (15 * 4))
 
 static inline pending_ring_idx_t pending_index(unsigned i)
 {
-- 
1.5.6.5


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