openvswitch: support MPLS push and pop for L3 packets
Update Ethernet header only if there is one. Signed-off-by: Jiri Benc <jbenc@redhat.com> Acked-by: Pravin B Shelar <pshelar@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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e2d9d8358c
Коммит
1560a074df
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@ -187,7 +187,8 @@ static int push_mpls(struct sk_buff *skb, struct sw_flow_key *key,
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skb_postpush_rcsum(skb, new_mpls_lse, MPLS_HLEN);
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update_ethertype(skb, eth_hdr(skb), mpls->mpls_ethertype);
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if (ovs_key_mac_proto(key) == MAC_PROTO_ETHERNET)
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update_ethertype(skb, eth_hdr(skb), mpls->mpls_ethertype);
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skb->protocol = mpls->mpls_ethertype;
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invalidate_flow_key(key);
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@ -197,7 +198,6 @@ static int push_mpls(struct sk_buff *skb, struct sw_flow_key *key,
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static int pop_mpls(struct sk_buff *skb, struct sw_flow_key *key,
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const __be16 ethertype)
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{
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struct ethhdr *hdr;
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int err;
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err = skb_ensure_writable(skb, skb->mac_len + MPLS_HLEN);
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@ -213,11 +213,15 @@ static int pop_mpls(struct sk_buff *skb, struct sw_flow_key *key,
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skb_reset_mac_header(skb);
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skb_set_network_header(skb, skb->mac_len);
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/* mpls_hdr() is used to locate the ethertype field correctly in the
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* presence of VLAN tags.
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*/
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hdr = (struct ethhdr *)((void *)mpls_hdr(skb) - ETH_HLEN);
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update_ethertype(skb, hdr, ethertype);
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if (ovs_key_mac_proto(key) == MAC_PROTO_ETHERNET) {
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struct ethhdr *hdr;
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/* mpls_hdr() is used to locate the ethertype field correctly in the
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* presence of VLAN tags.
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*/
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hdr = (struct ethhdr *)((void *)mpls_hdr(skb) - ETH_HLEN);
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update_ethertype(skb, hdr, ethertype);
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}
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if (eth_p_mpls(skb->protocol))
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skb->protocol = ethertype;
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