diff options
Diffstat (limited to 'include/net/pfcp.h')
| -rw-r--r-- | include/net/pfcp.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/include/net/pfcp.h b/include/net/pfcp.h index 3f9ebf27a8ff..af14f970b80e 100644 --- a/include/net/pfcp.h +++ b/include/net/pfcp.h @@ -2,12 +2,85 @@ #ifndef _PFCP_H_ #define _PFCP_H_ +#include <uapi/linux/if_ether.h> +#include <net/dst_metadata.h> #include <linux/netdevice.h> +#include <uapi/linux/ipv6.h> +#include <net/udp_tunnel.h> +#include <uapi/linux/udp.h> +#include <uapi/linux/ip.h> #include <linux/string.h> #include <linux/types.h> +#include <linux/bits.h> #define PFCP_PORT 8805 +/* PFCP protocol header */ +struct pfcphdr { + u8 flags; + u8 message_type; + __be16 message_length; +}; + +/* PFCP header flags */ +#define PFCP_SEID_FLAG BIT(0) +#define PFCP_MP_FLAG BIT(1) + +#define PFCP_VERSION_MASK GENMASK(4, 0) + +#define PFCP_HLEN (sizeof(struct udphdr) + sizeof(struct pfcphdr)) + +/* PFCP node related messages */ +struct pfcphdr_node { + u8 seq_number[3]; + u8 reserved; +}; + +/* PFCP session related messages */ +struct pfcphdr_session { + __be64 seid; + u8 seq_number[3]; +#ifdef __LITTLE_ENDIAN_BITFIELD + u8 message_priority:4, + reserved:4; +#elif defined(__BIG_ENDIAN_BITFIELD) + u8 reserved:4, + message_priprity:4; +#else +#error "Please fix <asm/byteorder>" +#endif +}; + +struct pfcp_metadata { + u8 type; + __be64 seid; +} __packed; + +enum { + PFCP_TYPE_NODE = 0, + PFCP_TYPE_SESSION = 1, +}; + +#define PFCP_HEADROOM (sizeof(struct iphdr) + sizeof(struct udphdr) + \ + sizeof(struct pfcphdr) + sizeof(struct ethhdr)) +#define PFCP6_HEADROOM (sizeof(struct ipv6hdr) + sizeof(struct udphdr) + \ + sizeof(struct pfcphdr) + sizeof(struct ethhdr)) + +static inline struct pfcphdr *pfcp_hdr(struct sk_buff *skb) +{ + return (struct pfcphdr *)(udp_hdr(skb) + 1); +} + +static inline struct pfcphdr_node *pfcp_hdr_node(struct sk_buff *skb) +{ + return (struct pfcphdr_node *)(pfcp_hdr(skb) + 1); +} + +static inline struct pfcphdr_session *pfcp_hdr_session(struct sk_buff *skb) +{ + return (struct pfcphdr_session *)(pfcp_hdr(skb) + 1); +} + static inline bool netif_is_pfcp(const struct net_device *dev) { return dev->rtnl_link_ops && |