diff options
| author | Joe Stringer <joestringer@nicira.com> | 2014-11-14 07:47:40 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-01-22 18:10:21 -0800 |
| commit | b66b6d9f6dbe0655a570fb2a2482cceac5f1a9bc (patch) | |
| tree | cffd645bf612e024996c7c623110fe3590a16a0a /drivers/net | |
| parent | e2929e453a1dddf489cc8bc360eb207df39d196c (diff) | |
fm10k: Check tunnel header length in encap offload
fm10k supports up to 184 bytes of inner+outer headers. Add an initial
check to fail encap offload if these are too large.
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/intel/fm10k/fm10k_main.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_main.c b/drivers/net/ethernet/intel/fm10k/fm10k_main.c index c7a19a5e0ec9..84ab9eea2768 100644 --- a/drivers/net/ethernet/intel/fm10k/fm10k_main.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_main.c @@ -727,6 +727,12 @@ static __be16 fm10k_tx_encap_offload(struct sk_buff *skb) struct ethhdr *eth_hdr; u8 l4_hdr = 0; +/* fm10k supports 184 octets of outer+inner headers. Minus 20 for inner L4. */ +#define FM10K_MAX_ENCAP_TRANSPORT_OFFSET 164 + if (skb_inner_transport_header(skb) - skb_mac_header(skb) > + FM10K_MAX_ENCAP_TRANSPORT_OFFSET) + return 0; + switch (vlan_get_protocol(skb)) { case htons(ETH_P_IP): l4_hdr = ip_hdr(skb)->protocol; |