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| author |   Wei Liu <wei.liu2@citrix.com> | 2013-04-22 02:20:41 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-04-22 15:37:01 -0400 |
| commit | 9ecd1a75d977e2e8c48139c7d3efed183f898d94 (patch) | |
| tree | daba39f085896184b65d1724e5441cda6ee213a5 /include/xen | |
| parent | xen-netfront: frags -> slots in log message (diff) | |
| download | linux-dev-9ecd1a75d977e2e8c48139c7d3efed183f898d94.tar.xz linux-dev-9ecd1a75d977e2e8c48139c7d3efed183f898d94.zip | |
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')
| -rw-r--r-- | include/xen/interface/io/netif.h | 1 |
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 */ |