On Wed, May 4, 2016 at 12:36 AM, Simon Horman
<simon.hor...@netronome.com> wrote:
> Allow push and pop mpls actions to act on layer 3 packets by teaching
> them not to access non-existent L2 headers of such packets.
>
> Signed-off-by: Simon Horman <simon.hor...@netronome.com>
> ---
> v9
> * New Patch
> ---
> net/openvswitch/actions.c | 22 ++++++++++++++--------
> 1 file changed, 14 insertions(+), 8 deletions(-)
>
> diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
> index 879185fe183f..fe885a89f501 100644
> --- a/net/openvswitch/actions.c
> +++ b/net/openvswitch/actions.c
> @@ -160,8 +160,10 @@ static int push_mpls(struct sk_buff *skb, struct
> sw_flow_key *key,
>
> skb_postpush_rcsum(skb, new_mpls_lse, MPLS_HLEN);
>
> - hdr = eth_hdr(skb);
> - hdr->h_proto = mpls->mpls_ethertype;
> + if (skb->mac_len) {
can you move hdr definition to this block?
> + hdr = eth_hdr(skb);
> + hdr->h_proto = mpls->mpls_ethertype;
> + }
>
We need to update skb checksum here. This bug is not related to your
patch. since you are changing this code can you also fix this?
> if (!skb->inner_protocol)
> skb_set_inner_protocol(skb, skb->protocol);
> @@ -174,7 +176,6 @@ static int push_mpls(struct sk_buff *skb, struct
> sw_flow_key *key,
> static int pop_mpls(struct sk_buff *skb, struct sw_flow_key *key,
> const __be16 ethertype)
> {
> - struct ethhdr *hdr;
> int err;
>
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