diff options
Diffstat (limited to 'src/plugins/gtpu/gtpu.h')
| -rw-r--r-- | src/plugins/gtpu/gtpu.h | 108 |
1 files changed, 103 insertions, 5 deletions
diff --git a/src/plugins/gtpu/gtpu.h b/src/plugins/gtpu/gtpu.h index 72d09232001..0c224ebbfe3 100644 --- a/src/plugins/gtpu/gtpu.h +++ b/src/plugins/gtpu/gtpu.h @@ -53,21 +53,56 @@ * 12 Next Extension Header Type3) 4) **/ -typedef struct -{ +typedef CLIB_PACKED (struct { u8 ver_flags; u8 type; u16 length; /* length in octets of the data following the fixed part of the header */ u32 teid; + /* The following fields exists if and only if one or more of E, S or PN + * are 1. */ u16 sequence; u8 pdu_number; u8 next_ext_type; -} gtpu_header_t; +}) gtpu_header_t; -#define GTPU_V1_HDR_LEN 8 +typedef CLIB_PACKED (struct { + u8 type; + u8 len; + u16 pad; +}) gtpu_ext_header_t; + +/** + * DL PDU SESSION INFORMATION (PDU Type 0): + * (3GPP TS 38.415) + * Bits + * Octets 8 7 6 5 4 3 2 1 + * 1 type qmp snp spare + * 2 ppp rqi qos_fi + * + * UL PDU SESSION INFORMATION (PDU Type 1): + * Bits + * Octets 8 7 6 5 4 3 2 1 + * 1 type qmp DL d. UL d. snp + * 2 n3/n9 delay new IE qos_fi + **/ +typedef CLIB_PACKED (struct { + u8 oct0; + u8 oct1; + // Extensions are supported +}) pdu_session_container_t; + +STATIC_ASSERT_SIZEOF (pdu_session_container_t, 2); +typedef CLIB_PACKED (struct { + u8 len; + pdu_session_container_t pdu; + u8 next_header; +}) gtpu_ext_with_pdu_session_header_t; + +#define GTPU_V1_HDR_LEN 8 #define GTPU_VER_MASK (7<<5) #define GTPU_PT_BIT (1<<4) +#define GTPU_RES_BIT (1 << 3) #define GTPU_E_BIT (1<<2) #define GTPU_S_BIT (1<<1) #define GTPU_PN_BIT (1<<0) @@ -78,12 +113,42 @@ typedef struct #define GTPU_PT_GTP (1<<4) #define GTPU_TYPE_GTPU 255 +#define GTPU_EXT_HDR_PDU_SESSION_CONTAINER 133 +#define GTPU_NO_MORE_EXT_HDR 0 +#define GTPU_PDU_DL_SESSION_TYPE 0 +#define GTPU_PDU_UL_SESSION_TYPE (1 << 4) + +#define GTPU_FORWARD_BAD_HEADER (1 << 0) +#define GTPU_FORWARD_UNKNOWN_TEID (1 << 1) +#define GTPU_FORWARD_UNKNOWN_TYPE (1 << 2) + +/* the ipv4 addresses used for the forwarding tunnels. 127.0.0.127 - .129. */ +#define GTPU_FORWARD_BAD_HEADER_ADDRESS_IPV4 0x7f00007fu +#define GTPU_FORWARD_UNKNOWN_TEID_ADDRESS_IPV4 0x8000007fu +#define GTPU_FORWARD_UNKNOWN_TYPE_ADDRESS_IPV4 0x8100007fu + +/* the ipv6 addresses used for the forwarding tunnels. + * 2001:db8:ffff:ffff:ffff:ffff:ffff:fffd - + * 2001:db8:ffff:ffff:ffff:ffff:ffff:ffff*/ +#define GTPU_FORWARD_BAD_HEADER_ADDRESS_IPV6 \ + { \ + .as_u64[0] = 0xffffffffb80d0120ull, .as_u64[1] = 0xfdffffffffffffffull \ + } +#define GTPU_FORWARD_UNKNOWN_TEID_ADDRESS_IPV6 \ + { \ + .as_u64[0] = 0xffffffffb80d0120ull, .as_u64[1] = 0xfeffffffffffffffull \ + } +#define GTPU_FORWARD_UNKNOWN_TYPE_ADDRESS_IPV6 \ + { \ + .as_u64[0] = 0xffffffffb80d0120ull, .as_u64[1] = 0xffffffffffffffffull \ + } /* *INDENT-OFF* */ typedef CLIB_PACKED(struct { ip4_header_t ip4; /* 20 bytes */ udp_header_t udp; /* 8 bytes */ gtpu_header_t gtpu; /* 12 bytes */ + gtpu_ext_with_pdu_session_header_t gtpu_ext; /* 4 bytes */ }) ip4_gtpu_header_t; /* *INDENT-ON* */ @@ -92,7 +157,8 @@ typedef CLIB_PACKED(struct { ip6_header_t ip6; /* 40 bytes */ udp_header_t udp; /* 8 bytes */ - gtpu_header_t gtpu; /* 8 bytes */ + gtpu_header_t gtpu; /* 12 bytes */ + gtpu_ext_with_pdu_session_header_t gtpu_ext; /* 4 bytes */ }) ip6_gtpu_header_t; /* *INDENT-ON* */ @@ -157,6 +223,14 @@ typedef struct u32 sw_if_index; u32 hw_if_index; + /* PDU session container extension enable/disable */ + u8 pdu_extension; + u8 qfi; + + /* The tunnel is used for forwarding */ + u8 is_forwarding; + u8 forwarding_type; + /** * Linkage into the FIB object graph */ @@ -232,6 +306,19 @@ typedef struct /* API message ID base */ u16 msg_id_base; + /* Handle GTP packets of unknown type like echo and error indication, + * unknown teid or bad version/header. + * All packets will be forwarded to a new IP address, + * so that they can be processes outside vpp. + * If not set then packets are dropped. + * One of more indexes can be unused (~0). */ + u32 bad_header_forward_tunnel_index_ipv4; + u32 unknown_teid_forward_tunnel_index_ipv4; + u32 unknown_type_forward_tunnel_index_ipv4; + u32 bad_header_forward_tunnel_index_ipv6; + u32 unknown_teid_forward_tunnel_index_ipv6; + u32 unknown_type_forward_tunnel_index_ipv6; + /* convenience */ vlib_main_t *vlib_main; vnet_main_t *vnet_main; @@ -263,8 +350,15 @@ typedef struct u32 decap_next_index; u32 teid; /* local or rx teid */ u32 tteid; /* remote or tx teid */ + u8 pdu_extension; + u8 qfi; + u8 is_forwarding; + u8 forwarding_type; } vnet_gtpu_add_mod_del_tunnel_args_t; +int vnet_gtpu_add_del_forwarding (vnet_gtpu_add_mod_del_tunnel_args_t *a, + u32 *sw_if_indexp); + int vnet_gtpu_add_mod_del_tunnel (vnet_gtpu_add_mod_del_tunnel_args_t * a, u32 * sw_if_indexp); @@ -272,11 +366,15 @@ typedef struct { u32 tunnel_index; u32 tteid; + u8 pdu_extension; + u8 qfi; } gtpu_encap_trace_t; void vnet_int_gtpu_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable); u32 vnet_gtpu_get_tunnel_index (u32 sw_if_index); int vnet_gtpu_add_del_rx_flow (u32 hw_if_index, u32 t_imdex, int is_add); +int get_combined_counters (u32 sw_if_index, vlib_counter_t *result_rx, + vlib_counter_t *result_tx); #endif /* included_vnet_gtpu_h */ |