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authorWei Liu <wei.liu2@citrix.com>2013-04-22 06:20:41 +0400
committerDavid S. Miller <davem@davemloft.net>2013-04-22 23:37:01 +0400
commit9ecd1a75d977e2e8c48139c7d3efed183f898d94 (patch)
treedaba39f085896184b65d1724e5441cda6ee213a5 /include/xen/interface
parent697089dc13c52d668322ac6cb8548520de27ed0e (diff)
downloadlinux-9ecd1a75d977e2e8c48139c7d3efed183f898d94.tar.xz
xen-netfront: reduce gso_max_size to account for max TCP header
The maximum packet including header that can be handled by netfront / netback wire format is 65535. Reduce gso_max_size accordingly. Drop skb and print warning when skb->len > 65535. This can 1) save the effort to send malformed packet to netback, 2) help spotting misconfiguration of netfront in the future. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/xen/interface')
-rw-r--r--include/xen/interface/io/netif.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/xen/interface/io/netif.h b/include/xen/interface/io/netif.h
index 9dfc12000980..58fadcac33a1 100644
--- a/include/xen/interface/io/netif.h
+++ b/include/xen/interface/io/netif.h
@@ -47,6 +47,7 @@
#define _XEN_NETTXF_extra_info (3)
#define XEN_NETTXF_extra_info (1U<<_XEN_NETTXF_extra_info)
+#define XEN_NETIF_MAX_TX_SIZE 0xFFFF
struct xen_netif_tx_request {
grant_ref_t gref; /* Reference to buffer page */
uint16_t offset; /* Offset within buffer page */