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Commit b66b6d9f authored by Joe Stringer's avatar Joe Stringer Committed by Jeff Kirsher
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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: default avatarJoe Stringer <joestringer@nicira.com>
Tested-by: default avatarKrishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent e2929e45

drivers/net/ethernet/intel/fm10k/fm10k_main.c

+6 −0
Original line number Diff line number Diff line
@@ -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;