diff options
Diffstat (limited to 'src/plugins/srv6-mobile/node.c')
| -rw-r--r-- | src/plugins/srv6-mobile/node.c | 864 |
1 files changed, 826 insertions, 38 deletions
diff --git a/src/plugins/srv6-mobile/node.c b/src/plugins/srv6-mobile/node.c index de3bc4a6f0d..0120c67284b 100644 --- a/src/plugins/srv6-mobile/node.c +++ b/src/plugins/srv6-mobile/node.c @@ -129,6 +129,14 @@ format_srv6_end_rewrite_trace6 (u8 * s, va_list * args) _(M_GTP6_D_DI_PACKETS, "srv6 End.M.GTP6.D.DI packets") \ _(M_GTP6_D_DI_BAD_PACKETS, "srv6 End.M.GTP6.D.DI bad packets") +#define foreach_srv6_end_v6_dt_error \ + _(M_GTP6_DT_PACKETS, "srv6 End.M.GTP6.DT packets") \ + _(M_GTP6_DT_BAD_PACKETS, "srv6 End.M.GTP6.DT bad packets") + +#define foreach_srv6_t_v4_dt_error \ + _(M_GTP4_DT_PACKETS, "srv6 T.M.GTP4.DT packets") \ + _(M_GTP4_DT_BAD_PACKETS, "srv6 T.M.GTP4.DT bad packets") + typedef enum { #define _(sym,str) SRV6_END_ERROR_##sym, @@ -169,6 +177,22 @@ typedef enum SRV6_END_N_V6_D_DI_ERROR, } srv6_end_error_v6_d_di_t; +typedef enum +{ +#define _(sym,str) SRV6_END_ERROR_##sym, + foreach_srv6_end_v6_dt_error +#undef _ + SRV6_END_N_V6_DT_ERROR, +} srv6_end_error_v6_dt_t; + +typedef enum +{ +#define _(sym,str) SRV6_T_ERROR_##sym, + foreach_srv6_t_v4_dt_error +#undef _ + SRV6_T_N_V4_DT_ERROR, +} srv6_t_error_v4_dt_t; + static char *srv6_end_error_v4_strings[] = { #define _(sym,string) string, foreach_srv6_end_v4_error @@ -199,6 +223,18 @@ static char *srv6_end_error_v6_d_di_strings[] = { #undef _ }; +static char *srv6_end_error_v6_dt_strings[] = { +#define _(sym,string) string, + foreach_srv6_end_v6_dt_error +#undef _ +}; + +static char *srv6_t_error_v4_dt_strings[] = { +#define _(sym,string) string, + foreach_srv6_t_v4_dt_error +#undef _ +}; + typedef enum { SRV6_END_M_GTP4_E_NEXT_DROP, @@ -234,6 +270,22 @@ typedef enum SRV6_END_M_GTP6_D_DI_N_NEXT, } srv6_end_m_gtp6_d_di_next_t; +typedef enum +{ + SRV6_END_M_GTP6_DT_NEXT_DROP, + SRV6_END_M_GTP6_DT_NEXT_LOOKUP4, + SRV6_END_M_GTP6_DT_NEXT_LOOKUP6, + SRV6_END_M_GTP6_DT_N_NEXT, +} srv6_end_m_gtp6_dt_next_t; + +typedef enum +{ + SRV6_T_M_GTP4_DT_NEXT_DROP, + SRV6_T_M_GTP4_DT_NEXT_LOOKUP4, + SRV6_T_M_GTP4_DT_NEXT_LOOKUP6, + SRV6_T_M_GTP4_DT_N_NEXT, +} srv6_t_m_gtp4_dt_next_t; + static inline u16 hash_uword_to_u16 (uword * key) { @@ -345,32 +397,14 @@ VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm, uword key; u16 port; ip4_address_t dst4; + u16 ie_size = 0; + u8 ie_buf[GTPU_IE_MAX_SIZ]; void *p; - // we need to be sure there is enough space before - // ip6srv0 header, there is some extra space - // in the pre_data area for this kind of - // logic - - // jump over variable length data - // not sure about the length if (ip6srv0->ip.protocol == IPPROTO_IPV6_ROUTE) { tag = ip6srv0->sr.tag; - - vlib_buffer_advance (b0, - (word) sizeof (ip6srv_combo_header_t) + - ip6srv0->sr.length * 8); } - else - { - vlib_buffer_advance (b0, (word) sizeof (ip6_header_t)); - } - - // get length of encapsulated IPv6 packet (the remaining part) - p = vlib_buffer_get_current (b0); - - len0 = vlib_buffer_length_in_chain (vm, b0); offset = ls0->localsid_len / 8; shift = ls0->localsid_len % 8; @@ -443,6 +477,58 @@ VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm, { hdrlen = sizeof (gtpu_exthdr_t); } + + if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ECHO_REPLY)) + { + hdrlen += sizeof (gtpu_recovery_ie); + } + + if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ERROR_INDICATION)) + { + ip6_sr_tlv_t *tlv; + u16 ext_len; + + ext_len = ip6srv0->sr.length * 8; + + if (ext_len > + sizeof (ip6_address_t) * (ip6srv0->sr.last_entry + 1)) + { + tlv = + (ip6_sr_tlv_t *) ((u8 *) & ip6srv0->sr + + sizeof (ip6_sr_header_t) + + sizeof (ip6_address_t) * + (ip6srv0->sr.last_entry + 1)); + + if (tlv->type == SRH_TLV_USER_PLANE_CONTAINER) + { + user_plane_sub_tlv_t *sub_tlv; + + sub_tlv = (user_plane_sub_tlv_t *) tlv->value; + + ie_size = sub_tlv->length; + clib_memcpy_fast (ie_buf, sub_tlv->value, ie_size); + + hdrlen += ie_size; + } + } + } + + if (ip6srv0->ip.protocol == IPPROTO_IPV6_ROUTE) + { + vlib_buffer_advance (b0, + (word) sizeof (ip6srv_combo_header_t) + + ip6srv0->sr.length * 8); + } + else + { + vlib_buffer_advance (b0, (word) sizeof (ip6_header_t)); + } + + // get length of encapsulated IPv6 packet (the remaining part) + p = vlib_buffer_get_current (b0); + + len0 = vlib_buffer_length_in_chain (vm, b0); + len0 += hdrlen; hdrlen += sizeof (ip4_gtpu_header_t); @@ -499,6 +585,28 @@ VLIB_NODE_FN (srv6_end_m_gtp4_e) (vlib_main_t * vm, hdr0->gtpu.ext->seq = seq; hdr0->gtpu.ext->npdu_num = 0; hdr0->gtpu.ext->nextexthdr = 0; + + if (gtpu_type == GTPU_TYPE_ECHO_REPLY) + { + gtpu_recovery_ie *recovery; + + recovery = + (gtpu_recovery_ie *) ((u8 *) hdr0 + + (hdrlen - + sizeof (gtpu_recovery_ie))); + recovery->type = GTPU_RECOVERY_IE_TYPE; + recovery->restart_counter = 0; + } + else if (gtpu_type == GTPU_TYPE_ERROR_INDICATION) + { + if (ie_size) + { + u8 *ie_ptr; + + ie_ptr = (u8 *) ((u8 *) hdr0 + (hdrlen - ie_size)); + clib_memcpy_fast (ie_ptr, ie_buf, ie_size); + } + } } offset = ls_param->v4src_position / 8; @@ -659,6 +767,9 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm, u32 offset, shift, index; ip6srv_combo_header_t *ip6srv; gtpu_pdu_session_t *sess = NULL; + u16 ie_size = 0; + u16 tlv_siz = 0; + u8 ie_buf[GTPU_IE_MAX_SIZ]; // Decap from GTP-U. hdr = (ip4_gtpu_header_t *) ip4; @@ -783,6 +894,24 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm, } } + if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ERROR_INDICATION)) + { + u16 payload_len; + + payload_len = clib_net_to_host_u16 (hdr->gtpu.length); + if (payload_len != 0 + && payload_len > hdr_len - sizeof (ip4_gtpu_header_t)) + { + u8 *ies; + + ies = (u8 *) ((u8 *) hdr + hdr_len); + ie_size = + payload_len - (hdr_len - sizeof (ip4_gtpu_header_t)); + clib_memcpy_fast (ie_buf, ies, ie_size); + hdr_len += ie_size; + } + } + src6 = ls_param->v6src_prefix; offset = ls_param->v6src_prefixlen / 8; @@ -847,6 +976,16 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm, } } + if (ie_size) + { + tlv_siz = + sizeof (ip6_sr_tlv_t) + sizeof (user_plane_sub_tlv_t) + + ie_size; + + tlv_siz = (tlv_siz & ~0x07) + (tlv_siz & 0x07 ? 0x08 : 0x0); + hdr_len += tlv_siz; + } + vlib_buffer_advance (b0, -(word) hdr_len); ip6srv = vlib_buffer_get_current (b0); @@ -1014,6 +1153,25 @@ VLIB_NODE_FN (srv6_t_m_gtp4_d) (vlib_main_t * vm, ip6srv->ip.src_address = src6; + if (PREDICT_FALSE (ie_size)) + { + ip6_sr_tlv_t *tlv; + user_plane_sub_tlv_t *sub_tlv; + + tlv = + (ip6_sr_tlv_t *) ((u8 *) ip6srv + (hdr_len - tlv_siz)); + tlv->type = SRH_TLV_USER_PLANE_CONTAINER; + tlv->length = tlv_siz - sizeof (ip6_sr_tlv_t); + clib_memset (tlv->value, 0, tlv->length); + + sub_tlv = (user_plane_sub_tlv_t *) tlv->value; + sub_tlv->type = USER_PLANE_SUB_TLV_IE; + sub_tlv->length = ie_size; + clib_memcpy_fast (sub_tlv->value, ie_buf, ie_size); + + ip6srv->sr.length += tlv_siz / 8; + } + ip6srv->ip.payload_length = clib_host_to_net_u16 (len0 + hdr_len - sizeof (ip6_header_t)); @@ -1056,8 +1214,8 @@ VLIB_REGISTER_NODE (srv6_end_m_gtp4_e) = srv6_end_error_v4_strings,.n_next_nodes = SRV6_END_M_GTP4_E_N_NEXT,.next_nodes = { - [SRV6_END_M_GTP4_E_NEXT_DROP] = "error-drop", - [SRV6_END_M_GTP4_E_NEXT_LOOKUP] = "ip4-lookup",} + [SRV6_END_M_GTP4_E_NEXT_DROP] = + "error-drop",[SRV6_END_M_GTP4_E_NEXT_LOOKUP] = "ip4-lookup",} ,}; VLIB_REGISTER_NODE (srv6_t_m_gtp4_d) = @@ -1068,8 +1226,8 @@ VLIB_REGISTER_NODE (srv6_t_m_gtp4_d) = srv6_t_error_v4_d_strings,.n_next_nodes = SRV6_T_M_GTP4_D_N_NEXT,.next_nodes = { - [SRV6_T_M_GTP4_D_NEXT_DROP] = "error-drop", - [SRV6_T_M_GTP4_D_NEXT_LOOKUP] = "ip6-lookup",} + [SRV6_T_M_GTP4_D_NEXT_DROP] = + "error-drop",[SRV6_T_M_GTP4_D_NEXT_LOOKUP] = "ip6-lookup",} ,}; // Function for SRv6 GTP6.E function @@ -1149,16 +1307,6 @@ VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm, // in the pre_data area for this kind of // logic - // jump over variable length data - // not sure about the length - vlib_buffer_advance (b0, (word) sizeof (ip6srv_combo_header_t) + - ip6srv0->sr.length * 8); - - // get length of encapsulated IPv6 packet (the remaining part) - p = vlib_buffer_get_current (b0); - - len0 = vlib_buffer_length_in_chain (vm, b0); - u32 teid = 0; u8 *teid8p = (u8 *) & teid; u8 qfi = 0; @@ -1167,6 +1315,8 @@ VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm, u16 index; u16 offset, shift; u32 hdrlen = 0; + u16 ie_size = 0; + u8 ie_buf[GTPU_IE_MAX_SIZ]; index = ls0->localsid_len; index += 8; @@ -1233,7 +1383,59 @@ VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm, hdrlen = sizeof (gtpu_exthdr_t); } + if (gtpu_type == GTPU_TYPE_ECHO_REPLY) + { + hdrlen += sizeof (gtpu_recovery_ie); + } + + if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ERROR_INDICATION)) + { + ip6_sr_tlv_t *tlv; + u16 ext_len; + + ext_len = ip6srv0->sr.length * 8; + + if (ext_len > + sizeof (ip6_address_t) * (ip6srv0->sr.last_entry + 1)) + { + tlv = + (ip6_sr_tlv_t *) ((u8 *) & ip6srv0->sr + + sizeof (ip6_sr_header_t) + + sizeof (ip6_address_t) * + (ip6srv0->sr.last_entry + 1)); + + if (tlv->type == SRH_TLV_USER_PLANE_CONTAINER) + { + user_plane_sub_tlv_t *sub_tlv; + + sub_tlv = (user_plane_sub_tlv_t *) tlv->value; + + ie_size = sub_tlv->length; + clib_memcpy_fast (ie_buf, sub_tlv->value, ie_size); + + hdrlen += ie_size; + } + } + } + + if (ip6srv0->ip.protocol == IPPROTO_IPV6_ROUTE) + { + vlib_buffer_advance (b0, + (word) sizeof (ip6srv_combo_header_t) + + ip6srv0->sr.length * 8); + } + else + { + vlib_buffer_advance (b0, (word) sizeof (ip6_header_t)); + } + + // get length of encapsulated IPv6 packet (the remaining part) + p = vlib_buffer_get_current (b0); + + len0 = vlib_buffer_length_in_chain (vm, b0); + len0 += hdrlen; + hdrlen += sizeof (ip6_gtpu_header_t); vlib_buffer_advance (b0, -(word) hdrlen); @@ -1284,6 +1486,28 @@ VLIB_NODE_FN (srv6_end_m_gtp6_e) (vlib_main_t * vm, hdr0->gtpu.ext->seq = seq; hdr0->gtpu.ext->npdu_num = 0; hdr0->gtpu.ext->nextexthdr = 0; + + if (gtpu_type == GTPU_TYPE_ECHO_REPLY) + { + gtpu_recovery_ie *recovery; + + recovery = + (gtpu_recovery_ie *) ((u8 *) hdr0 + + (hdrlen - + sizeof (gtpu_recovery_ie))); + recovery->type = GTPU_RECOVERY_IE_TYPE; + recovery->restart_counter = 0; + } + else if (gtpu_type == GTPU_TYPE_ERROR_INDICATION) + { + if (ie_size) + { + u8 *ie_ptr; + + ie_ptr = (u8 *) ((u8 *) hdr0 + (hdrlen - ie_size)); + clib_memcpy_fast (ie_ptr, ie_buf, ie_size); + } + } } hdr0->udp.length = clib_host_to_net_u16 (len0 + @@ -1389,6 +1613,9 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm, u32 hdrlen; ip6_header_t *encap = NULL; gtpu_pdu_session_t *sess = NULL; + u16 ie_size = 0; + u16 tlv_siz = 0; + u8 ie_buf[GTPU_IE_MAX_SIZ]; u32 next0 = SRV6_END_M_GTP6_D_NEXT_LOOKUP; @@ -1535,6 +1762,24 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm, } } + if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ERROR_INDICATION)) + { + u16 payload_len; + + payload_len = clib_net_to_host_u16 (hdr0->gtpu.length); + if (payload_len != 0 + && payload_len > hdrlen - sizeof (ip6_gtpu_header_t)) + { + u8 *ies; + + ies = (u8 *) ((u8 *) hdr0 + hdrlen); + ie_size = + payload_len - (hdrlen - sizeof (ip6_gtpu_header_t)); + clib_memcpy_fast (ie_buf, ies, ie_size); + hdrlen += ie_size; + } + } + // jump over variable length data vlib_buffer_advance (b0, (word) hdrlen); @@ -1587,6 +1832,16 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm, } } + if (ie_size) + { + tlv_siz = + sizeof (ip6_sr_tlv_t) + sizeof (user_plane_sub_tlv_t) + + ie_size; + + tlv_siz = (tlv_siz & ~0x07) + (tlv_siz & 0x07 ? 0x08 : 0x0); + hdr_len += tlv_siz; + } + // jump back to data[0] or pre_data if required vlib_buffer_advance (b0, -(word) hdr_len); @@ -1755,6 +2010,25 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d) (vlib_main_t * vm, } } + if (PREDICT_FALSE (ie_size)) + { + ip6_sr_tlv_t *tlv; + user_plane_sub_tlv_t *sub_tlv; + + tlv = + (ip6_sr_tlv_t *) ((u8 *) ip6srv + (hdr_len - tlv_siz)); + tlv->type = SRH_TLV_USER_PLANE_CONTAINER; + tlv->length = tlv_siz - sizeof (ip6_sr_tlv_t); + clib_memset (tlv->value, 0, tlv->length); + + sub_tlv = (user_plane_sub_tlv_t *) tlv->value; + sub_tlv->type = USER_PLANE_SUB_TLV_IE; + sub_tlv->length = ie_size; + clib_memcpy_fast (sub_tlv->value, ie_buf, ie_size); + + ip6srv->sr.length += tlv_siz / 8; + } + ip6srv->ip.payload_length = clib_host_to_net_u16 (len0 + hdr_len - sizeof (ip6_header_t)); @@ -1845,6 +2119,9 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm, u32 hdrlen; ip6_header_t *encap = NULL; gtpu_pdu_session_t *sess; + u16 ie_size = 0; + u16 tlv_siz = 0; + u8 ie_buf[GTPU_IE_MAX_SIZ]; u32 next0 = SRV6_END_M_GTP6_D_DI_NEXT_LOOKUP; @@ -1990,6 +2267,24 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm, } } + if (PREDICT_FALSE (gtpu_type == GTPU_TYPE_ERROR_INDICATION)) + { + u16 payload_len; + + payload_len = clib_net_to_host_u16 (hdr0->gtpu.length); + if (payload_len != 0 + && payload_len > hdrlen - sizeof (ip6_gtpu_header_t)) + { + u8 *ies; + + ies = (u8 *) ((u8 *) hdr0 + hdrlen); + ie_size = + payload_len - (hdrlen - sizeof (ip6_gtpu_header_t)); + clib_memcpy_fast (ie_buf, ies, ie_size); + hdrlen += ie_size; + } + } + // jump over variable length data vlib_buffer_advance (b0, (word) hdrlen); @@ -2033,6 +2328,16 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm, hdr_len += sizeof (ip6_address_t) * 2; + if (ie_size) + { + tlv_siz = + sizeof (ip6_sr_tlv_t) + sizeof (user_plane_sub_tlv_t) + + ie_size; + + tlv_siz = (tlv_siz & ~0x07) + (tlv_siz & 0x07 ? 0x08 : 0x0); + hdr_len += tlv_siz; + } + // jump back to data[0] or pre_data if required vlib_buffer_advance (b0, -(word) hdr_len); @@ -2114,6 +2419,24 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm, ip6srv->sr.segments[0] = dst0; } + if (PREDICT_FALSE (ie_size)) + { + ip6_sr_tlv_t *tlv; + user_plane_sub_tlv_t *sub_tlv; + + tlv = + (ip6_sr_tlv_t *) ((u8 *) ip6srv + (hdr_len - tlv_siz)); + tlv->type = SRH_TLV_USER_PLANE_CONTAINER; + tlv->length = tlv_siz - sizeof (ip6_sr_tlv_t); + clib_memset (tlv->value, 0, tlv->length); + + sub_tlv = (user_plane_sub_tlv_t *) tlv->value; + sub_tlv->length = ie_size; + clib_memcpy_fast (sub_tlv->value, ie_buf, ie_size); + + ip6srv->sr.length += tlv_siz / 8; + } + ip6srv->ip.payload_length = clib_host_to_net_u16 (len0 + hdr_len - sizeof (ip6_header_t)); ip6srv->ip.protocol = IP_PROTOCOL_IPV6_ROUTE; @@ -2207,6 +2530,443 @@ VLIB_NODE_FN (srv6_end_m_gtp6_d_di) (vlib_main_t * vm, return frame->n_vectors; } +// Function for SRv6 GTP6.DT function +VLIB_NODE_FN (srv6_end_m_gtp6_dt) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + srv6_end_main_v6_dt_t *sm = &srv6_end_main_v6_dt; + ip6_sr_main_t *sm2 = &sr_main; + u32 n_left_from, next_index, *from, *to_next; + u32 thread_index = vm->thread_index; + + u32 good_n = 0, bad_n = 0; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + srv6_end_gtp6_dt_param_t *ls_param; + ip6_sr_localsid_t *ls0; + + ip6_gtpu_header_t *hdr0 = NULL; + ip4_header_t *ip4 = NULL; + ip6_header_t *ip6 = NULL; + ip6_address_t src, dst; + u32 teid; + u32 hdrlen; + u32 len0; + + u32 next0 = SRV6_END_M_GTP6_DT_NEXT_DROP; + + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + ls0 = + pool_elt_at_index (sm2->localsids, + vnet_buffer (b0)->ip.adj_index[VLIB_TX]); + + ls_param = (srv6_end_gtp6_dt_param_t *) ls0->plugin_mem; + + hdr0 = vlib_buffer_get_current (b0); + + hdrlen = sizeof (ip6_gtpu_header_t); + + len0 = vlib_buffer_length_in_chain (vm, b0); + + if ((hdr0->ip6.protocol != IP_PROTOCOL_UDP) + || (hdr0->udp.dst_port != + clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT)) + || (len0 < sizeof (ip6_gtpu_header_t))) + { + next0 = SRV6_END_M_GTP6_DT_NEXT_DROP; + + bad_n++; + } + else + { + clib_memcpy_fast (src.as_u8, hdr0->ip6.src_address.as_u8, + sizeof (ip6_address_t)); + clib_memcpy_fast (dst.as_u8, hdr0->ip6.dst_address.as_u8, + sizeof (ip6_address_t)); + + teid = hdr0->gtpu.teid; + + if (hdr0->gtpu.ver_flags & GTPU_EXTHDR_FLAG) + { + hdrlen += sizeof (gtpu_exthdr_t); + if (hdr0->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION) + { + gtpu_pdu_session_t *sess; + + sess = + (gtpu_pdu_session_t *) (((char *) hdr0) + + sizeof (ip6_gtpu_header_t) + + sizeof (gtpu_exthdr_t)); + + hdrlen += sizeof (gtpu_pdu_session_t); + if (sess->u.val & GTPU_PDU_SESSION_P_BIT_MASK) + { + hdrlen += sizeof (gtpu_paging_policy_t); + } + } + } + + if (ls_param->type == SRV6_GTP6_DT4) + { + vlib_buffer_advance (b0, (word) hdrlen); + ip4 = vlib_buffer_get_current (b0); + if ((ip4->ip_version_and_header_length & 0xf0) != 0x40) + { + next0 = SRV6_END_M_GTP6_DT_NEXT_DROP; + bad_n++; + goto DONE; + } + + next0 = SRV6_END_M_GTP6_DT_NEXT_LOOKUP4; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->fib4_index; + } + else if (ls_param->type == SRV6_GTP6_DT6) + { + ip6 = (ip6_header_t *) ((u8 *) hdr0 + hdrlen); + if ((clib_net_to_host_u32 + (ip6->ip_version_traffic_class_and_flow_label) >> 28) + != 6) + { + next0 = SRV6_END_M_GTP6_DT_NEXT_DROP; + bad_n++; + goto DONE; + } + + next0 = SRV6_END_M_GTP6_DT_NEXT_LOOKUP6; + if ((ip6->dst_address.as_u8[0] == 0xfe) + && ((ip6->dst_address.as_u8[1] & 0xc0) == 0x80)) + { + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->local_fib_index; + } + else + { + vlib_buffer_advance (b0, (word) hdrlen); + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->fib6_index; + } + } + else if (ls_param->type == SRV6_GTP6_DT46) + { + ip6 = (ip6_header_t *) ((u8 *) hdr0 + hdrlen); + if ((clib_net_to_host_u32 + (ip6->ip_version_traffic_class_and_flow_label) >> 28) + == 6) + { + next0 = SRV6_END_M_GTP6_DT_NEXT_LOOKUP6; + if ((ip6->dst_address.as_u8[0] == 0xfe) + && ((ip6->dst_address.as_u8[1] & 0xc0) == 0x80)) + { + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->local_fib_index; + } + else + { + vlib_buffer_advance (b0, (word) hdrlen); + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->fib6_index; + } + } + else + if ((clib_net_to_host_u32 + (ip6->ip_version_traffic_class_and_flow_label) >> 28) + == 4) + { + vlib_buffer_advance (b0, (word) hdrlen); + next0 = SRV6_END_M_GTP6_DT_NEXT_LOOKUP4; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->fib4_index; + } + else + { + next0 = SRV6_END_M_GTP6_DT_NEXT_DROP; + bad_n++; + goto DONE; + } + } + else + { + next0 = SRV6_END_M_GTP6_DT_NEXT_DROP; + bad_n++; + goto DONE; + } + + good_n++; + + if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && + PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + srv6_end_rewrite_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy (tr->src.as_u8, src.as_u8, + sizeof (ip6_address_t)); + clib_memcpy (tr->dst.as_u8, dst.as_u8, + sizeof (ip6_address_t)); + tr->teid = teid; + } + } + + DONE: + vlib_increment_combined_counter + (((next0 == + SRV6_END_M_GTP6_DT_NEXT_DROP) ? &(sm2->sr_ls_invalid_counters) + : &(sm2->sr_ls_valid_counters)), thread_index, + ls0 - sm2->localsids, 1, vlib_buffer_length_in_chain (vm, b0)); + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, sm->end_m_gtp6_dt_node_index, + SRV6_END_ERROR_M_GTP6_DT_BAD_PACKETS, bad_n); + + vlib_node_increment_counter (vm, sm->end_m_gtp6_dt_node_index, + SRV6_END_ERROR_M_GTP6_DT_PACKETS, good_n); + + return frame->n_vectors; +} + +// Function for SRv6 GTP4.DT function +VLIB_NODE_FN (srv6_t_m_gtp4_dt) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + srv6_t_main_v4_dt_t *sm = &srv6_t_main_v4_dt; + ip6_sr_main_t *sm2 = &sr_main; + u32 n_left_from, next_index, *from, *to_next; + + u32 good_n = 0, bad_n = 0; + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + srv6_t_gtp4_dt_param_t *ls_param; + ip6_sr_sl_t *ls0; + + ip4_gtpu_header_t *hdr0 = NULL; + ip4_header_t *ip4 = NULL; + ip6_header_t *ip6 = NULL; + ip6_address_t src, dst; + u32 teid; + u32 hdrlen; + u32 len0; + + u32 next0 = SRV6_T_M_GTP4_DT_NEXT_DROP; + + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + ls0 = + pool_elt_at_index (sm2->sid_lists, + vnet_buffer (b0)->ip.adj_index[VLIB_TX]); + + ls_param = (srv6_t_gtp4_dt_param_t *) ls0->plugin_mem; + + hdr0 = vlib_buffer_get_current (b0); + + hdrlen = sizeof (ip4_gtpu_header_t); + + len0 = vlib_buffer_length_in_chain (vm, b0); + + if ((hdr0->ip4.protocol != IP_PROTOCOL_UDP) + || (hdr0->udp.dst_port != + clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT)) + || (len0 < sizeof (ip4_gtpu_header_t))) + { + next0 = SRV6_T_M_GTP4_DT_NEXT_DROP; + + bad_n++; + } + else + { + clib_memcpy_fast (src.as_u8, hdr0->ip4.src_address.as_u8, + sizeof (ip4_address_t)); + clib_memcpy_fast (dst.as_u8, hdr0->ip4.dst_address.as_u8, + sizeof (ip4_address_t)); + + teid = hdr0->gtpu.teid; + + if (hdr0->gtpu.ver_flags & GTPU_EXTHDR_FLAG) + { + hdrlen += sizeof (gtpu_exthdr_t); + if (hdr0->gtpu.ext->nextexthdr == GTPU_EXTHDR_PDU_SESSION) + { + gtpu_pdu_session_t *sess; + + sess = + (gtpu_pdu_session_t *) (((char *) hdr0) + + sizeof (ip6_gtpu_header_t) + + sizeof (gtpu_exthdr_t)); + + hdrlen += sizeof (gtpu_pdu_session_t); + if (sess->u.val & GTPU_PDU_SESSION_P_BIT_MASK) + { + hdrlen += sizeof (gtpu_paging_policy_t); + } + } + } + + if (ls_param->type == SRV6_GTP4_DT4) + { + vlib_buffer_advance (b0, (word) hdrlen); + ip4 = vlib_buffer_get_current (b0); + if ((ip4->ip_version_and_header_length & 0xf0) != 0x40) + { + next0 = SRV6_T_M_GTP4_DT_NEXT_DROP; + bad_n++; + goto DONE; + } + + next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP4; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->fib4_index; + } + else if (ls_param->type == SRV6_GTP4_DT6) + { + ip6 = (ip6_header_t *) ((u8 *) hdr0 + hdrlen); + if ((clib_net_to_host_u32 + (ip6->ip_version_traffic_class_and_flow_label) >> 28) + != 6) + { + next0 = SRV6_T_M_GTP4_DT_NEXT_DROP; + bad_n++; + goto DONE; + } + + next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP6; + if ((ip6->dst_address.as_u8[0] == 0xfe) + && ((ip6->dst_address.as_u8[1] & 0xc0) == 0x80)) + { + next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP4; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->local_fib_index; + } + else + { + vlib_buffer_advance (b0, (word) hdrlen); + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->fib6_index; + } + } + else if (ls_param->type == SRV6_GTP4_DT46) + { + ip6 = (ip6_header_t *) ((u8 *) hdr0 + hdrlen); + if ((clib_net_to_host_u32 + (ip6->ip_version_traffic_class_and_flow_label) >> 28) + == 6) + { + next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP6; + if ((ip6->dst_address.as_u8[0] == 0xfe) + && ((ip6->dst_address.as_u8[1] & 0xc0) == 0x80)) + { + next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP4; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->local_fib_index; + } + else + { + vlib_buffer_advance (b0, (word) hdrlen); + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->fib6_index; + } + } + else + if ((clib_net_to_host_u32 + (ip6->ip_version_traffic_class_and_flow_label) >> 28) + == 4) + { + vlib_buffer_advance (b0, (word) hdrlen); + next0 = SRV6_T_M_GTP4_DT_NEXT_LOOKUP4; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = + ls_param->fib4_index; + } + else + { + next0 = SRV6_T_M_GTP4_DT_NEXT_DROP; + bad_n++; + goto DONE; + } + } + else + { + next0 = SRV6_T_M_GTP4_DT_NEXT_DROP; + bad_n++; + goto DONE; + } + + good_n++; + + if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && + PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + srv6_end_rewrite_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy (tr->src.as_u8, src.as_u8, + sizeof (ip6_address_t)); + clib_memcpy (tr->dst.as_u8, dst.as_u8, + sizeof (ip6_address_t)); + tr->teid = teid; + } + } + + DONE: + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, sm->t_m_gtp4_dt_node_index, + SRV6_T_ERROR_M_GTP4_DT_BAD_PACKETS, bad_n); + + vlib_node_increment_counter (vm, sm->t_m_gtp4_dt_node_index, + SRV6_T_ERROR_M_GTP4_DT_PACKETS, good_n); + + return frame->n_vectors; +} + VLIB_REGISTER_NODE (srv6_end_m_gtp6_e) = { .name = "srv6-end-m-gtp6-e",.vector_size = sizeof (u32),.format_trace = @@ -2215,8 +2975,8 @@ VLIB_REGISTER_NODE (srv6_end_m_gtp6_e) = srv6_end_error_v6_e_strings,.n_next_nodes = SRV6_END_M_GTP6_E_N_NEXT,.next_nodes = { - [SRV6_END_M_GTP6_E_NEXT_DROP] = "error-drop", - [SRV6_END_M_GTP6_E_NEXT_LOOKUP] = "ip6-lookup",} + [SRV6_END_M_GTP6_E_NEXT_DROP] = + "error-drop",[SRV6_END_M_GTP6_E_NEXT_LOOKUP] = "ip6-lookup",} ,}; VLIB_REGISTER_NODE (srv6_end_m_gtp6_d) = @@ -2227,8 +2987,8 @@ VLIB_REGISTER_NODE (srv6_end_m_gtp6_d) = srv6_end_error_v6_d_strings,.n_next_nodes = SRV6_END_M_GTP6_D_N_NEXT,.next_nodes = { - [SRV6_END_M_GTP6_D_NEXT_DROP] = "error-drop", - [SRV6_END_M_GTP6_D_NEXT_LOOKUP] = "ip6-lookup",} + [SRV6_END_M_GTP6_D_NEXT_DROP] = + "error-drop",[SRV6_END_M_GTP6_D_NEXT_LOOKUP] = "ip6-lookup",} ,}; VLIB_REGISTER_NODE (srv6_end_m_gtp6_d_di) = @@ -2243,6 +3003,34 @@ VLIB_REGISTER_NODE (srv6_end_m_gtp6_d_di) = [SRV6_END_M_GTP6_D_DI_NEXT_LOOKUP] = "ip6-lookup",} ,}; +VLIB_REGISTER_NODE (srv6_end_m_gtp6_dt) = +{ + .name = "srv6-end-m-gtp6-dt",.vector_size = sizeof (u32),.format_trace = + format_srv6_end_rewrite_trace6,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = + ARRAY_LEN (srv6_end_error_v6_dt_strings),.error_strings = + srv6_end_error_v6_dt_strings,.n_next_nodes = + SRV6_END_M_GTP6_DT_N_NEXT,.next_nodes = + { + [SRV6_END_M_GTP6_DT_NEXT_DROP] = + "error-drop", + [SRV6_END_M_GTP6_DT_NEXT_LOOKUP4] + = "ip4-lookup",[SRV6_END_M_GTP6_DT_NEXT_LOOKUP6] = "ip6-lookup",} +,}; + +VLIB_REGISTER_NODE (srv6_t_m_gtp4_dt) = +{ + .name = "srv6-t-m-gtp4-dt",.vector_size = sizeof (u32),.format_trace = + format_srv6_end_rewrite_trace6,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = + ARRAY_LEN (srv6_t_error_v4_dt_strings),.error_strings = + srv6_t_error_v4_dt_strings,.n_next_nodes = + SRV6_T_M_GTP4_DT_N_NEXT,.next_nodes = + { + [SRV6_T_M_GTP4_DT_NEXT_DROP] = + "error-drop", + [SRV6_T_M_GTP4_DT_NEXT_LOOKUP4] = + "ip4-lookup",[SRV6_T_M_GTP4_DT_NEXT_LOOKUP6] = "ip6-lookup",} +,}; + /* * fd.io coding-style-patch-verification: ON * |