diff options
Diffstat (limited to 'net/openvswitch/flow.c')
| -rw-r--r-- | net/openvswitch/flow.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c index 2b78789ea7c5..90a21010fc8f 100644 --- a/net/openvswitch/flow.c +++ b/net/openvswitch/flow.c @@ -32,6 +32,7 @@ #include <linux/if_arp.h> #include <linux/ip.h> #include <linux/ipv6.h> +#include <linux/mpls.h> #include <linux/sctp.h> #include <linux/smp.h> #include <linux/tcp.h> @@ -42,6 +43,7 @@ #include <net/ip.h> #include <net/ip_tunnels.h> #include <net/ipv6.h> +#include <net/mpls.h> #include <net/ndisc.h> #include "datapath.h" @@ -480,6 +482,7 @@ static int key_extract(struct sk_buff *skb, struct sw_flow_key *key) return -ENOMEM; skb_reset_network_header(skb); + skb_reset_mac_len(skb); __skb_push(skb, skb->data - skb_mac_header(skb)); /* Network layer. */ @@ -584,6 +587,33 @@ static int key_extract(struct sk_buff *skb, struct sw_flow_key *key) memset(&key->ip, 0, sizeof(key->ip)); memset(&key->ipv4, 0, sizeof(key->ipv4)); } + } else if (eth_p_mpls(key->eth.type)) { + size_t stack_len = MPLS_HLEN; + + /* In the presence of an MPLS label stack the end of the L2 + * header and the beginning of the L3 header differ. + * + * Advance network_header to the beginning of the L3 + * header. mac_len corresponds to the end of the L2 header. + */ + while (1) { + __be32 lse; + + error = check_header(skb, skb->mac_len + stack_len); + if (unlikely(error)) + return 0; + + memcpy(&lse, skb_network_header(skb), MPLS_HLEN); + + if (stack_len == MPLS_HLEN) + memcpy(&key->mpls.top_lse, &lse, MPLS_HLEN); + + skb_set_network_header(skb, skb->mac_len + stack_len); + if (lse & htonl(MPLS_LS_S_MASK)) + break; + + stack_len += MPLS_HLEN; + } } else if (key->eth.type == htons(ETH_P_IPV6)) { int nh_len; /* IPv6 Header + Extensions */ |