#define IP6_MAP_T_DUAL_LOOP
-typedef enum {
+typedef enum
+{
IP6_MAPT_NEXT_MAPT_TCP_UDP,
IP6_MAPT_NEXT_MAPT_ICMP,
IP6_MAPT_NEXT_MAPT_FRAGMENTED,
IP6_MAPT_N_NEXT
} ip6_mapt_next_t;
-typedef enum {
+typedef enum
+{
IP6_MAPT_ICMP_NEXT_IP4_LOOKUP,
IP6_MAPT_ICMP_NEXT_IP4_FRAG,
IP6_MAPT_ICMP_NEXT_DROP,
IP6_MAPT_ICMP_N_NEXT
} ip6_mapt_icmp_next_t;
-typedef enum {
+typedef enum
+{
IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP,
IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG,
IP6_MAPT_TCP_UDP_NEXT_DROP,
IP6_MAPT_TCP_UDP_N_NEXT
} ip6_mapt_tcp_udp_next_t;
-typedef enum {
+typedef enum
+{
IP6_MAPT_FRAGMENTED_NEXT_IP4_LOOKUP,
IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG,
IP6_MAPT_FRAGMENTED_NEXT_DROP,
} ip6_mapt_fragmented_next_t;
static_always_inline int
-ip6_map_fragment_cache (ip6_header_t *ip6, ip6_frag_hdr_t *frag, map_domain_t *d, u16 port)
+ip6_map_fragment_cache (ip6_header_t * ip6, ip6_frag_hdr_t * frag,
+ map_domain_t * d, u16 port)
{
u32 *ignore = NULL;
- map_ip4_reass_lock();
- map_ip4_reass_t *r = map_ip4_reass_get(map_get_ip4(&ip6->src_address), ip6_map_t_embedded_address(d, &ip6->dst_address),
- frag_id_6to4(frag->identification),
- (ip6->protocol == IP_PROTOCOL_ICMP6) ? IP_PROTOCOL_ICMP : ip6->protocol,
- &ignore);
+ map_ip4_reass_lock ();
+ map_ip4_reass_t *r = map_ip4_reass_get (map_get_ip4 (&ip6->src_address),
+ ip6_map_t_embedded_address (d,
+ &ip6->
+ dst_address),
+ frag_id_6to4 (frag->identification),
+ (ip6->protocol ==
+ IP_PROTOCOL_ICMP6) ?
+ IP_PROTOCOL_ICMP : ip6->protocol,
+ &ignore);
if (r)
r->port = port;
- map_ip4_reass_unlock();
+ map_ip4_reass_unlock ();
return !r;
}
/* Returns the associated port or -1 */
static_always_inline i32
-ip6_map_fragment_get(ip6_header_t *ip6, ip6_frag_hdr_t *frag, map_domain_t *d)
+ip6_map_fragment_get (ip6_header_t * ip6, ip6_frag_hdr_t * frag,
+ map_domain_t * d)
{
u32 *ignore = NULL;
- map_ip4_reass_lock();
- map_ip4_reass_t *r = map_ip4_reass_get(map_get_ip4(&ip6->src_address), ip6_map_t_embedded_address(d, &ip6->dst_address),
- frag_id_6to4(frag->identification),
- (ip6->protocol == IP_PROTOCOL_ICMP6) ? IP_PROTOCOL_ICMP : ip6->protocol,
- &ignore);
- i32 ret = r?r->port:-1;
- map_ip4_reass_unlock();
+ map_ip4_reass_lock ();
+ map_ip4_reass_t *r = map_ip4_reass_get (map_get_ip4 (&ip6->src_address),
+ ip6_map_t_embedded_address (d,
+ &ip6->
+ dst_address),
+ frag_id_6to4 (frag->identification),
+ (ip6->protocol ==
+ IP_PROTOCOL_ICMP6) ?
+ IP_PROTOCOL_ICMP : ip6->protocol,
+ &ignore);
+ i32 ret = r ? r->port : -1;
+ map_ip4_reass_unlock ();
return ret;
}
static_always_inline u8
-ip6_translate_tos(const ip6_header_t *ip6)
+ip6_translate_tos (const ip6_header_t * ip6)
{
#ifdef IP6_MAP_T_OVERRIDE_TOS
return IP6_MAP_T_OVERRIDE_TOS;
#else
- return (clib_net_to_host_u32(ip6->ip_version_traffic_class_and_flow_label) & 0x0ff00000) >> 20;
+ return (clib_net_to_host_u32 (ip6->ip_version_traffic_class_and_flow_label)
+ & 0x0ff00000) >> 20;
#endif
}
//TODO: Find right place in memory for that
+/* *INDENT-OFF* */
static u8 icmp6_to_icmp_updater_pointer_table[] =
- { 0, 1,~0,~0,
- 2, 2, 9, 8,
- 12,12,12,12,
- 12,12,12,12,
- 12,12,12,12,
- 12,12,12,12,
- 24,24,24,24,
- 24,24,24,24,
- 24,24,24,24,
- 24,24,24,24
- };
+ { 0, 1, ~0, ~0,
+ 2, 2, 9, 8,
+ 12, 12, 12, 12,
+ 12, 12, 12, 12,
+ 12, 12, 12, 12,
+ 12, 12, 12, 12,
+ 24, 24, 24, 24,
+ 24, 24, 24, 24,
+ 24, 24, 24, 24,
+ 24, 24, 24, 24
+ };
+/* *INDENT-ON* */
static_always_inline int
-ip6_icmp_to_icmp6_in_place (icmp46_header_t *icmp, u32 icmp_len,
- i32 *sender_port, ip6_header_t **inner_ip6)
+ip6_icmp_to_icmp6_in_place (icmp46_header_t * icmp, u32 icmp_len,
+ i32 * sender_port, ip6_header_t ** inner_ip6)
{
*inner_ip6 = NULL;
- switch (icmp->type) {
+ switch (icmp->type)
+ {
case ICMP6_echo_request:
- *sender_port = ((u16 *)icmp)[2];
+ *sender_port = ((u16 *) icmp)[2];
icmp->type = ICMP4_echo_request;
break;
case ICMP6_echo_reply:
- *sender_port = ((u16 *)icmp)[2];
+ *sender_port = ((u16 *) icmp)[2];
icmp->type = ICMP4_echo_reply;
break;
case ICMP6_destination_unreachable:
- *inner_ip6 = (ip6_header_t *) u8_ptr_add(icmp, 8);
- *sender_port = ip6_get_port(*inner_ip6, MAP_RECEIVER, icmp_len);
-
- switch (icmp->code) {
- case ICMP6_destination_unreachable_no_route_to_destination: //0
- case ICMP6_destination_unreachable_beyond_scope_of_source_address: //2
- case ICMP6_destination_unreachable_address_unreachable: //3
- icmp->type = ICMP4_destination_unreachable;
- icmp->code = ICMP4_destination_unreachable_destination_unreachable_host;
- break;
- case ICMP6_destination_unreachable_destination_administratively_prohibited: //1
- icmp->type = ICMP4_destination_unreachable;
- icmp->code = ICMP4_destination_unreachable_communication_administratively_prohibited;
- break;
- case ICMP6_destination_unreachable_port_unreachable:
- icmp->type = ICMP4_destination_unreachable;
- icmp->code = ICMP4_destination_unreachable_port_unreachable;
- break;
- default:
- return -1;
- }
- break;
+ *inner_ip6 = (ip6_header_t *) u8_ptr_add (icmp, 8);
+ *sender_port = ip6_get_port (*inner_ip6, MAP_RECEIVER, icmp_len);
+
+ switch (icmp->code)
+ {
+ case ICMP6_destination_unreachable_no_route_to_destination: //0
+ case ICMP6_destination_unreachable_beyond_scope_of_source_address: //2
+ case ICMP6_destination_unreachable_address_unreachable: //3
+ icmp->type = ICMP4_destination_unreachable;
+ icmp->code =
+ ICMP4_destination_unreachable_destination_unreachable_host;
+ break;
+ case ICMP6_destination_unreachable_destination_administratively_prohibited: //1
+ icmp->type =
+ ICMP4_destination_unreachable;
+ icmp->code =
+ ICMP4_destination_unreachable_communication_administratively_prohibited;
+ break;
+ case ICMP6_destination_unreachable_port_unreachable:
+ icmp->type = ICMP4_destination_unreachable;
+ icmp->code = ICMP4_destination_unreachable_port_unreachable;
+ break;
+ default:
+ return -1;
+ }
+ break;
case ICMP6_packet_too_big:
- *inner_ip6 = (ip6_header_t *) u8_ptr_add(icmp, 8);
- *sender_port = ip6_get_port(*inner_ip6, MAP_RECEIVER, icmp_len);
+ *inner_ip6 = (ip6_header_t *) u8_ptr_add (icmp, 8);
+ *sender_port = ip6_get_port (*inner_ip6, MAP_RECEIVER, icmp_len);
icmp->type = ICMP4_destination_unreachable;
icmp->code = 4;
{
- u32 advertised_mtu = clib_net_to_host_u32(*((u32 *)(icmp + 1)));
+ u32 advertised_mtu = clib_net_to_host_u32 (*((u32 *) (icmp + 1)));
advertised_mtu -= 20;
- //FIXME: = minimum(advertised MTU-20, MTU_of_IPv4_nexthop, (MTU_of_IPv6_nexthop)-20)
- ((u16 *)(icmp))[3] = clib_host_to_net_u16(advertised_mtu);
+ //FIXME: = minimum(advertised MTU-20, MTU_of_IPv4_nexthop, (MTU_of_IPv6_nexthop)-20)
+ ((u16 *) (icmp))[3] = clib_host_to_net_u16 (advertised_mtu);
}
break;
case ICMP6_time_exceeded:
- *inner_ip6 = (ip6_header_t *) u8_ptr_add(icmp, 8);
- *sender_port = ip6_get_port(*inner_ip6, MAP_RECEIVER, icmp_len);
+ *inner_ip6 = (ip6_header_t *) u8_ptr_add (icmp, 8);
+ *sender_port = ip6_get_port (*inner_ip6, MAP_RECEIVER, icmp_len);
icmp->type = ICMP4_time_exceeded;
break;
case ICMP6_parameter_problem:
- *inner_ip6 = (ip6_header_t *) u8_ptr_add(icmp, 8);
- *sender_port = ip6_get_port(*inner_ip6, MAP_RECEIVER, icmp_len);
+ *inner_ip6 = (ip6_header_t *) u8_ptr_add (icmp, 8);
+ *sender_port = ip6_get_port (*inner_ip6, MAP_RECEIVER, icmp_len);
- switch (icmp->code) {
+ switch (icmp->code)
+ {
case ICMP6_parameter_problem_erroneous_header_field:
icmp->type = ICMP4_parameter_problem;
icmp->code = ICMP4_parameter_problem_pointer_indicates_error;
- u32 pointer = clib_net_to_host_u32(*((u32*)(icmp + 1)));
+ u32 pointer = clib_net_to_host_u32 (*((u32 *) (icmp + 1)));
if (pointer >= 40)
return -1;
- ((u8*)(icmp + 1))[0] = icmp6_to_icmp_updater_pointer_table[pointer];
+ ((u8 *) (icmp + 1))[0] =
+ icmp6_to_icmp_updater_pointer_table[pointer];
break;
case ICMP6_parameter_problem_unrecognized_next_header:
icmp->type = ICMP4_destination_unreachable;
case ICMP6_parameter_problem_unrecognized_option:
default:
return -1;
- }
+ }
break;
default:
return -1;
break;
- }
+ }
return 0;
}
static_always_inline void
-_ip6_map_t_icmp (map_domain_t *d, vlib_buffer_t *p, u8 *error)
+_ip6_map_t_icmp (map_domain_t * d, vlib_buffer_t * p, u8 * error)
{
ip6_header_t *ip6, *inner_ip6;
ip4_header_t *ip4, *inner_ip4;
ip_csum_t csum;
u32 ip4_sadr, inner_ip4_dadr;
- ip6 = vlib_buffer_get_current(p);
- ip6_pay_len = clib_net_to_host_u16(ip6->payload_length);
- icmp = (icmp46_header_t *)(ip6 + 1);
- ASSERT(ip6_pay_len + sizeof(*ip6) <= p->current_length);
-
- if (ip6->protocol != IP_PROTOCOL_ICMP6) {
- //No extensions headers allowed here
- //TODO: SR header
- *error = MAP_ERROR_MALFORMED;
- return;
- }
-
- //There are no fragmented ICMP messages, so no extension header for now
-
- if (ip6_icmp_to_icmp6_in_place(icmp, ip6_pay_len, &sender_port, &inner_ip6)) {
- //TODO: In case of 1:1 mapping it is not necessary to have the sender port
- *error = MAP_ERROR_ICMP;
- return;
- }
-
- if (sender_port < 0) {
- // In case of 1:1 mapping, we don't care about the port
- if(d->ea_bits_len == 0 && d->rules) {
- sender_port = 0;
- } else {
- *error = MAP_ERROR_ICMP;
- return;
- }
- }
+ ip6 = vlib_buffer_get_current (p);
+ ip6_pay_len = clib_net_to_host_u16 (ip6->payload_length);
+ icmp = (icmp46_header_t *) (ip6 + 1);
+ ASSERT (ip6_pay_len + sizeof (*ip6) <= p->current_length);
- //Security check
- //Note that this prevents an intermediate IPv6 router from answering the request
- ip4_sadr = map_get_ip4(&ip6->src_address);
- if (ip6->src_address.as_u64[0] != map_get_pfx_net(d, ip4_sadr, sender_port) ||
- ip6->src_address.as_u64[1] != map_get_sfx_net(d, ip4_sadr, sender_port)) {
- *error = MAP_ERROR_SEC_CHECK;
- return;
- }
-
- if (inner_ip6) {
- u16 *inner_L4_checksum, inner_l4_offset, inner_frag_offset, inner_frag_id;
- u8 *inner_l4, inner_protocol;
-
- //We have two headers to translate
- // FROM
- // [ IPv6 ]<- ext ->[IC][ IPv6 ]<- ext ->[L4 header ...
- // Handled cases:
- // [ IPv6 ][IC][ IPv6 ][L4 header ...
- // [ IPv6 ][IC][ IPv6 ][Fr][L4 header ...
- // TO
- // [ IPv4][IC][ IPv4][L4 header ...
-
- //TODO: This was already done deep in ip6_icmp_to_icmp6_in_place
- //We shouldn't have to do it again
- if (ip6_parse(inner_ip6, ip6_pay_len - 8,
- &inner_protocol, &inner_l4_offset, &inner_frag_offset)) {
+ if (ip6->protocol != IP_PROTOCOL_ICMP6)
+ {
+ //No extensions headers allowed here
+ //TODO: SR header
*error = MAP_ERROR_MALFORMED;
return;
}
- inner_l4 = u8_ptr_add(inner_ip6, inner_l4_offset);
- inner_ip4 = (ip4_header_t *) u8_ptr_add(inner_l4, - sizeof(*inner_ip4));
- if (inner_frag_offset) {
- ip6_frag_hdr_t *inner_frag = (ip6_frag_hdr_t *) u8_ptr_add(inner_ip6, inner_frag_offset);
- inner_frag_id = frag_id_6to4(inner_frag->identification);
- } else {
- inner_frag_id = 0;
- }
+ //There are no fragmented ICMP messages, so no extension header for now
- //Do the translation of the inner packet
- if (inner_protocol == IP_PROTOCOL_TCP) {
- inner_L4_checksum = (u16 *) u8_ptr_add(inner_l4, 16);
- } else if (inner_protocol == IP_PROTOCOL_UDP) {
- inner_L4_checksum = (u16 *) u8_ptr_add(inner_l4, 6);
- } else if (inner_protocol == IP_PROTOCOL_ICMP6) {
- icmp46_header_t *inner_icmp = (icmp46_header_t *) inner_l4;
- csum = inner_icmp->checksum;
- csum = ip_csum_sub_even(csum, *((u16 *)inner_icmp));
- //It cannot be of a different type as ip6_icmp_to_icmp6_in_place succeeded
- inner_icmp->type = (inner_icmp->type == ICMP6_echo_request) ?
- ICMP4_echo_request : ICMP4_echo_reply;
- csum = ip_csum_add_even(csum, *((u16 *)inner_icmp));
- inner_icmp->checksum = ip_csum_fold(csum);
- inner_protocol = IP_PROTOCOL_ICMP; //Will be copied to ip6 later
- inner_L4_checksum = &inner_icmp->checksum;
- } else {
- *error = MAP_ERROR_BAD_PROTOCOL;
+ if (ip6_icmp_to_icmp6_in_place
+ (icmp, ip6_pay_len, &sender_port, &inner_ip6))
+ {
+ //TODO: In case of 1:1 mapping it is not necessary to have the sender port
+ *error = MAP_ERROR_ICMP;
return;
}
- csum = *inner_L4_checksum;
- csum = ip_csum_sub_even(csum, inner_ip6->src_address.as_u64[0]);
- csum = ip_csum_sub_even(csum, inner_ip6->src_address.as_u64[1]);
- csum = ip_csum_sub_even(csum, inner_ip6->dst_address.as_u64[0]);
- csum = ip_csum_sub_even(csum, inner_ip6->dst_address.as_u64[1]);
-
- //Sanity check of the outer destination address
- if (ip6->dst_address.as_u64[0] != inner_ip6->src_address.as_u64[0] &&
- ip6->dst_address.as_u64[1] != inner_ip6->src_address.as_u64[1]) {
- *error = MAP_ERROR_SEC_CHECK;
- return;
+ if (sender_port < 0)
+ {
+ // In case of 1:1 mapping, we don't care about the port
+ if (d->ea_bits_len == 0 && d->rules)
+ {
+ sender_port = 0;
+ }
+ else
+ {
+ *error = MAP_ERROR_ICMP;
+ return;
+ }
}
- //Security check of inner packet
- inner_ip4_dadr = map_get_ip4(&inner_ip6->dst_address);
- if (inner_ip6->dst_address.as_u64[0] != map_get_pfx_net(d, inner_ip4_dadr, sender_port) ||
- inner_ip6->dst_address.as_u64[1] != map_get_sfx_net(d, inner_ip4_dadr, sender_port)) {
+ //Security check
+ //Note that this prevents an intermediate IPv6 router from answering the request
+ ip4_sadr = map_get_ip4 (&ip6->src_address);
+ if (ip6->src_address.as_u64[0] != map_get_pfx_net (d, ip4_sadr, sender_port)
+ || ip6->src_address.as_u64[1] != map_get_sfx_net (d, ip4_sadr,
+ sender_port))
+ {
*error = MAP_ERROR_SEC_CHECK;
return;
}
- inner_ip4->dst_address.as_u32 = inner_ip4_dadr;
- inner_ip4->src_address.as_u32 = ip6_map_t_embedded_address(d, &inner_ip6->src_address);
- inner_ip4->ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
- inner_ip4->tos = ip6_translate_tos(inner_ip6);
- inner_ip4->length = u16_net_add(inner_ip6->payload_length, sizeof(*ip4) + sizeof(*ip6) -
- inner_l4_offset);
- inner_ip4->fragment_id = inner_frag_id;
- inner_ip4->flags_and_fragment_offset = clib_host_to_net_u16(IP4_HEADER_FLAG_MORE_FRAGMENTS);
- inner_ip4->ttl = inner_ip6->hop_limit;
- inner_ip4->protocol = inner_protocol;
- inner_ip4->checksum = ip4_header_checksum(inner_ip4);
-
- if (inner_ip4->protocol == IP_PROTOCOL_ICMP) {
- //Remove remainings of the pseudo-header in the csum
- csum = ip_csum_sub_even(csum, clib_host_to_net_u16(IP_PROTOCOL_ICMP6));
- csum = ip_csum_sub_even(csum, inner_ip4->length - sizeof(*inner_ip4));
- } else {
- //Update to new pseudo-header
- csum = ip_csum_add_even(csum, inner_ip4->src_address.as_u32);
- csum = ip_csum_add_even(csum, inner_ip4->dst_address.as_u32);
+ if (inner_ip6)
+ {
+ u16 *inner_L4_checksum, inner_l4_offset, inner_frag_offset,
+ inner_frag_id;
+ u8 *inner_l4, inner_protocol;
+
+ //We have two headers to translate
+ // FROM
+ // [ IPv6 ]<- ext ->[IC][ IPv6 ]<- ext ->[L4 header ...
+ // Handled cases:
+ // [ IPv6 ][IC][ IPv6 ][L4 header ...
+ // [ IPv6 ][IC][ IPv6 ][Fr][L4 header ...
+ // TO
+ // [ IPv4][IC][ IPv4][L4 header ...
+
+ //TODO: This was already done deep in ip6_icmp_to_icmp6_in_place
+ //We shouldn't have to do it again
+ if (ip6_parse (inner_ip6, ip6_pay_len - 8,
+ &inner_protocol, &inner_l4_offset, &inner_frag_offset))
+ {
+ *error = MAP_ERROR_MALFORMED;
+ return;
+ }
+
+ inner_l4 = u8_ptr_add (inner_ip6, inner_l4_offset);
+ inner_ip4 =
+ (ip4_header_t *) u8_ptr_add (inner_l4, -sizeof (*inner_ip4));
+ if (inner_frag_offset)
+ {
+ ip6_frag_hdr_t *inner_frag =
+ (ip6_frag_hdr_t *) u8_ptr_add (inner_ip6, inner_frag_offset);
+ inner_frag_id = frag_id_6to4 (inner_frag->identification);
+ }
+ else
+ {
+ inner_frag_id = 0;
+ }
+
+ //Do the translation of the inner packet
+ if (inner_protocol == IP_PROTOCOL_TCP)
+ {
+ inner_L4_checksum = (u16 *) u8_ptr_add (inner_l4, 16);
+ }
+ else if (inner_protocol == IP_PROTOCOL_UDP)
+ {
+ inner_L4_checksum = (u16 *) u8_ptr_add (inner_l4, 6);
+ }
+ else if (inner_protocol == IP_PROTOCOL_ICMP6)
+ {
+ icmp46_header_t *inner_icmp = (icmp46_header_t *) inner_l4;
+ csum = inner_icmp->checksum;
+ csum = ip_csum_sub_even (csum, *((u16 *) inner_icmp));
+ //It cannot be of a different type as ip6_icmp_to_icmp6_in_place succeeded
+ inner_icmp->type = (inner_icmp->type == ICMP6_echo_request) ?
+ ICMP4_echo_request : ICMP4_echo_reply;
+ csum = ip_csum_add_even (csum, *((u16 *) inner_icmp));
+ inner_icmp->checksum = ip_csum_fold (csum);
+ inner_protocol = IP_PROTOCOL_ICMP; //Will be copied to ip6 later
+ inner_L4_checksum = &inner_icmp->checksum;
+ }
+ else
+ {
+ *error = MAP_ERROR_BAD_PROTOCOL;
+ return;
+ }
+
+ csum = *inner_L4_checksum;
+ csum = ip_csum_sub_even (csum, inner_ip6->src_address.as_u64[0]);
+ csum = ip_csum_sub_even (csum, inner_ip6->src_address.as_u64[1]);
+ csum = ip_csum_sub_even (csum, inner_ip6->dst_address.as_u64[0]);
+ csum = ip_csum_sub_even (csum, inner_ip6->dst_address.as_u64[1]);
+
+ //Sanity check of the outer destination address
+ if (ip6->dst_address.as_u64[0] != inner_ip6->src_address.as_u64[0] &&
+ ip6->dst_address.as_u64[1] != inner_ip6->src_address.as_u64[1])
+ {
+ *error = MAP_ERROR_SEC_CHECK;
+ return;
+ }
+
+ //Security check of inner packet
+ inner_ip4_dadr = map_get_ip4 (&inner_ip6->dst_address);
+ if (inner_ip6->dst_address.as_u64[0] !=
+ map_get_pfx_net (d, inner_ip4_dadr, sender_port)
+ || inner_ip6->dst_address.as_u64[1] != map_get_sfx_net (d,
+ inner_ip4_dadr,
+ sender_port))
+ {
+ *error = MAP_ERROR_SEC_CHECK;
+ return;
+ }
+
+ inner_ip4->dst_address.as_u32 = inner_ip4_dadr;
+ inner_ip4->src_address.as_u32 =
+ ip6_map_t_embedded_address (d, &inner_ip6->src_address);
+ inner_ip4->ip_version_and_header_length =
+ IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
+ inner_ip4->tos = ip6_translate_tos (inner_ip6);
+ inner_ip4->length =
+ u16_net_add (inner_ip6->payload_length,
+ sizeof (*ip4) + sizeof (*ip6) - inner_l4_offset);
+ inner_ip4->fragment_id = inner_frag_id;
+ inner_ip4->flags_and_fragment_offset =
+ clib_host_to_net_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS);
+ inner_ip4->ttl = inner_ip6->hop_limit;
+ inner_ip4->protocol = inner_protocol;
+ inner_ip4->checksum = ip4_header_checksum (inner_ip4);
+
+ if (inner_ip4->protocol == IP_PROTOCOL_ICMP)
+ {
+ //Remove remainings of the pseudo-header in the csum
+ csum =
+ ip_csum_sub_even (csum, clib_host_to_net_u16 (IP_PROTOCOL_ICMP6));
+ csum =
+ ip_csum_sub_even (csum, inner_ip4->length - sizeof (*inner_ip4));
+ }
+ else
+ {
+ //Update to new pseudo-header
+ csum = ip_csum_add_even (csum, inner_ip4->src_address.as_u32);
+ csum = ip_csum_add_even (csum, inner_ip4->dst_address.as_u32);
+ }
+ *inner_L4_checksum = ip_csum_fold (csum);
+
+ //Move up icmp header
+ ip4 = (ip4_header_t *) u8_ptr_add (inner_l4, -2 * sizeof (*ip4) - 8);
+ clib_memcpy (u8_ptr_add (inner_l4, -sizeof (*ip4) - 8), icmp, 8);
+ icmp = (icmp46_header_t *) u8_ptr_add (inner_l4, -sizeof (*ip4) - 8);
}
- *inner_L4_checksum = ip_csum_fold(csum);
-
- //Move up icmp header
- ip4 = (ip4_header_t *) u8_ptr_add(inner_l4, - 2 * sizeof(*ip4) - 8);
- clib_memcpy(u8_ptr_add(inner_l4, - sizeof(*ip4) - 8), icmp, 8);
- icmp = (icmp46_header_t *) u8_ptr_add(inner_l4, - sizeof(*ip4) - 8);
- } else {
- //Only one header to translate
- ip4 = (ip4_header_t *) u8_ptr_add(ip6, sizeof(*ip6) - sizeof(*ip4));
- }
- vlib_buffer_advance(p, (u32) (((u8 *)ip4) - ((u8 *)ip6)));
-
- ip4->dst_address.as_u32 = ip6_map_t_embedded_address(d, &ip6->dst_address);
+ else
+ {
+ //Only one header to translate
+ ip4 = (ip4_header_t *) u8_ptr_add (ip6, sizeof (*ip6) - sizeof (*ip4));
+ }
+ vlib_buffer_advance (p, (u32) (((u8 *) ip4) - ((u8 *) ip6)));
+
+ ip4->dst_address.as_u32 = ip6_map_t_embedded_address (d, &ip6->dst_address);
ip4->src_address.as_u32 = ip4_sadr;
- ip4->ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
- ip4->tos = ip6_translate_tos(ip6);
+ ip4->ip_version_and_header_length =
+ IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
+ ip4->tos = ip6_translate_tos (ip6);
ip4->fragment_id = 0;
ip4->flags_and_fragment_offset = 0;
ip4->ttl = ip6->hop_limit;
ip4->protocol = IP_PROTOCOL_ICMP;
//TODO fix the length depending on offset length
- ip4->length = u16_net_add(ip6->payload_length,
- (inner_ip6 == NULL)?sizeof(*ip4):(2*sizeof(*ip4) - sizeof(*ip6)));
- ip4->checksum = ip4_header_checksum(ip4);
+ ip4->length = u16_net_add (ip6->payload_length,
+ (inner_ip6 ==
+ NULL) ? sizeof (*ip4) : (2 * sizeof (*ip4) -
+ sizeof (*ip6)));
+ ip4->checksum = ip4_header_checksum (ip4);
//TODO: We could do an easy diff-checksum for echo requests/replies
//Recompute ICMP checksum
icmp->checksum = 0;
- csum = ip_incremental_checksum(0, icmp, clib_net_to_host_u16(ip4->length) - sizeof(*ip4));
+ csum =
+ ip_incremental_checksum (0, icmp,
+ clib_net_to_host_u16 (ip4->length) -
+ sizeof (*ip4));
icmp->checksum = ~ip_csum_fold (csum);
}
static uword
-ip6_map_t_icmp (vlib_main_t *vm,
- vlib_node_runtime_t *node,
- vlib_frame_t *frame)
+ip6_map_t_icmp (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
{
u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
- vlib_node_runtime_t *error_node = vlib_node_get_runtime (vm, ip6_map_t_icmp_node.index);
+ vlib_node_runtime_t *error_node =
+ vlib_node_get_runtime (vm, ip6_map_t_icmp_node.index);
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
vlib_combined_counter_main_t *cm = map_main.domain_counters;
- u32 cpu_index = os_get_cpu_number();
-
- while (n_left_from > 0) {
- 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 pi0;
- vlib_buffer_t *p0;
- u8 error0;
- ip6_mapt_icmp_next_t next0;
- map_domain_t *d0;
- u16 len0;
-
- pi0 = to_next[0] = from[0];
- from += 1;
- n_left_from -= 1;
- to_next +=1;
- n_left_to_next -= 1;
- error0 = MAP_ERROR_NONE;
- next0 = IP6_MAPT_ICMP_NEXT_IP4_LOOKUP;
-
- p0 = vlib_get_buffer(vm, pi0);
- len0 = clib_net_to_host_u16(((ip6_header_t *)vlib_buffer_get_current(p0))->payload_length);
- d0 = pool_elt_at_index(map_main.domains, vnet_buffer(p0)->map_t.map_domain_index);
- _ip6_map_t_icmp(d0, p0, &error0);
-
- if(vnet_buffer(p0)->map_t.mtu < p0->current_length) {
- //Send to fragmentation node if necessary
- vnet_buffer(p0)->ip_frag.mtu = vnet_buffer(p0)->map_t.mtu;
- vnet_buffer(p0)->ip_frag.header_offset = 0;
- vnet_buffer(p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
- next0 = IP6_MAPT_ICMP_NEXT_IP4_FRAG;
- }
-
- if (PREDICT_TRUE(error0 == MAP_ERROR_NONE)) {
- vlib_increment_combined_counter(cm + MAP_DOMAIN_COUNTER_RX, cpu_index,
- vnet_buffer(p0)->map_t.map_domain_index, 1,
- len0);
- } else {
- next0 = IP6_MAPT_ICMP_NEXT_DROP;
- }
-
- p0->error = error_node->errors[error0];
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next, pi0,
- next0);
+ u32 cpu_index = os_get_cpu_number ();
+
+ while (n_left_from > 0)
+ {
+ 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 pi0;
+ vlib_buffer_t *p0;
+ u8 error0;
+ ip6_mapt_icmp_next_t next0;
+ map_domain_t *d0;
+ u16 len0;
+
+ pi0 = to_next[0] = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+ error0 = MAP_ERROR_NONE;
+ next0 = IP6_MAPT_ICMP_NEXT_IP4_LOOKUP;
+
+ p0 = vlib_get_buffer (vm, pi0);
+ len0 =
+ clib_net_to_host_u16 (((ip6_header_t *)
+ vlib_buffer_get_current
+ (p0))->payload_length);
+ d0 =
+ pool_elt_at_index (map_main.domains,
+ vnet_buffer (p0)->map_t.map_domain_index);
+ _ip6_map_t_icmp (d0, p0, &error0);
+
+ if (vnet_buffer (p0)->map_t.mtu < p0->current_length)
+ {
+ //Send to fragmentation node if necessary
+ vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu;
+ vnet_buffer (p0)->ip_frag.header_offset = 0;
+ vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
+ next0 = IP6_MAPT_ICMP_NEXT_IP4_FRAG;
+ }
+
+ if (PREDICT_TRUE (error0 == MAP_ERROR_NONE))
+ {
+ vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX,
+ cpu_index,
+ vnet_buffer (p0)->
+ map_t.map_domain_index, 1,
+ len0);
+ }
+ else
+ {
+ next0 = IP6_MAPT_ICMP_NEXT_DROP;
+ }
+
+ p0->error = error_node->errors[error0];
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next, pi0,
+ next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
return frame->n_vectors;
}
static uword
-ip6_map_t_fragmented (vlib_main_t *vm,
- vlib_node_runtime_t *node,
- vlib_frame_t *frame)
+ip6_map_t_fragmented (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
{
u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
- from = vlib_frame_vector_args(frame);
+ from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
- while (n_left_from > 0) {
- vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
+ while (n_left_from > 0)
+ {
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
#ifdef IP6_MAP_T_DUAL_LOOP
- while(n_left_from >= 4 && n_left_to_next >= 2) {
- u32 pi0, pi1;
- vlib_buffer_t *p0, *p1;
- ip6_header_t *ip60, *ip61;
- ip6_frag_hdr_t *frag0, *frag1;
- ip4_header_t *ip40, *ip41;
- u16 frag_id0, frag_offset0,
- frag_id1, frag_offset1;
- u8 frag_more0, frag_more1;
- u32 next0, next1;
-
- pi0 = to_next[0] = from[0];
- pi1 = to_next[1] = from[1];
- from += 2;
- n_left_from -= 2;
- to_next += 2;
- n_left_to_next -= 2;
-
- next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
- next1 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
- p0 = vlib_get_buffer(vm, pi0);
- p1 = vlib_get_buffer(vm, pi1);
- ip60 = vlib_buffer_get_current(p0);
- ip61 = vlib_buffer_get_current(p1);
- frag0 = (ip6_frag_hdr_t *)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.frag_offset);
- frag1 = (ip6_frag_hdr_t *)u8_ptr_add(ip61, vnet_buffer(p1)->map_t.v6.frag_offset);
- ip40 = (ip4_header_t *)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset - sizeof(*ip40));
- ip41 = (ip4_header_t *)u8_ptr_add(ip61, vnet_buffer(p1)->map_t.v6.l4_offset - sizeof(*ip40));
- vlib_buffer_advance(p0, vnet_buffer(p0)->map_t.v6.l4_offset - sizeof(*ip40));
- vlib_buffer_advance(p1, vnet_buffer(p1)->map_t.v6.l4_offset - sizeof(*ip40));
-
- frag_id0 = frag_id_6to4(frag0->identification);
- frag_id1 = frag_id_6to4(frag1->identification);
- frag_more0 = ip6_frag_hdr_more(frag0);
- frag_more1 = ip6_frag_hdr_more(frag1);
- frag_offset0 = ip6_frag_hdr_offset(frag0);
- frag_offset1 = ip6_frag_hdr_offset(frag1);
-
- ip40->dst_address.as_u32 = vnet_buffer(p0)->map_t.v6.daddr;
- ip41->dst_address.as_u32 = vnet_buffer(p1)->map_t.v6.daddr;
- ip40->src_address.as_u32 = vnet_buffer(p0)->map_t.v6.saddr;
- ip41->src_address.as_u32 = vnet_buffer(p1)->map_t.v6.saddr;
- ip40->ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
- ip41->ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
- ip40->tos = ip6_translate_tos(ip60);
- ip41->tos = ip6_translate_tos(ip61);
- ip40->length = u16_net_add(ip60->payload_length,
- sizeof(*ip40) - vnet_buffer(p0)->map_t.v6.l4_offset + sizeof(*ip60));
- ip41->length = u16_net_add(ip61->payload_length,
- sizeof(*ip40) - vnet_buffer(p1)->map_t.v6.l4_offset + sizeof(*ip60));
- ip40->fragment_id = frag_id0;
- ip41->fragment_id = frag_id1;
- ip40->flags_and_fragment_offset =
- clib_host_to_net_u16(frag_offset0 | (frag_more0?IP4_HEADER_FLAG_MORE_FRAGMENTS:0));
- ip41->flags_and_fragment_offset =
- clib_host_to_net_u16(frag_offset1 | (frag_more1?IP4_HEADER_FLAG_MORE_FRAGMENTS:0));
- ip40->ttl = ip60->hop_limit;
- ip41->ttl = ip61->hop_limit;
- ip40->protocol = (vnet_buffer(p0)->map_t.v6.l4_protocol == IP_PROTOCOL_ICMP6)?
- IP_PROTOCOL_ICMP:vnet_buffer(p0)->map_t.v6.l4_protocol;
- ip41->protocol = (vnet_buffer(p1)->map_t.v6.l4_protocol == IP_PROTOCOL_ICMP6)?
- IP_PROTOCOL_ICMP:vnet_buffer(p1)->map_t.v6.l4_protocol;
- ip40->checksum = ip4_header_checksum(ip40);
- ip41->checksum = ip4_header_checksum(ip41);
-
- if(vnet_buffer(p0)->map_t.mtu < p0->current_length) {
- vnet_buffer(p0)->ip_frag.mtu = vnet_buffer(p0)->map_t.mtu;
- vnet_buffer(p0)->ip_frag.header_offset = 0;
- vnet_buffer(p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
- next0 = IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG;
- }
-
- if(vnet_buffer(p1)->map_t.mtu < p1->current_length) {
- vnet_buffer(p1)->ip_frag.mtu = vnet_buffer(p1)->map_t.mtu;
- vnet_buffer(p1)->ip_frag.header_offset = 0;
- vnet_buffer(p1)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
- next1 = IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG;
- }
-
- vlib_validate_buffer_enqueue_x2(vm, node, next_index,
- to_next, n_left_to_next, pi0, pi1,
- next0, next1);
- }
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ u32 pi0, pi1;
+ vlib_buffer_t *p0, *p1;
+ ip6_header_t *ip60, *ip61;
+ ip6_frag_hdr_t *frag0, *frag1;
+ ip4_header_t *ip40, *ip41;
+ u16 frag_id0, frag_offset0, frag_id1, frag_offset1;
+ u8 frag_more0, frag_more1;
+ u32 next0, next1;
+
+ pi0 = to_next[0] = from[0];
+ pi1 = to_next[1] = from[1];
+ from += 2;
+ n_left_from -= 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+
+ next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
+ next1 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
+ p0 = vlib_get_buffer (vm, pi0);
+ p1 = vlib_get_buffer (vm, pi1);
+ ip60 = vlib_buffer_get_current (p0);
+ ip61 = vlib_buffer_get_current (p1);
+ frag0 =
+ (ip6_frag_hdr_t *) u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.
+ v6.frag_offset);
+ frag1 =
+ (ip6_frag_hdr_t *) u8_ptr_add (ip61,
+ vnet_buffer (p1)->map_t.
+ v6.frag_offset);
+ ip40 =
+ (ip4_header_t *) u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.
+ v6.l4_offset - sizeof (*ip40));
+ ip41 =
+ (ip4_header_t *) u8_ptr_add (ip61,
+ vnet_buffer (p1)->map_t.
+ v6.l4_offset - sizeof (*ip40));
+ vlib_buffer_advance (p0,
+ vnet_buffer (p0)->map_t.v6.l4_offset -
+ sizeof (*ip40));
+ vlib_buffer_advance (p1,
+ vnet_buffer (p1)->map_t.v6.l4_offset -
+ sizeof (*ip40));
+
+ frag_id0 = frag_id_6to4 (frag0->identification);
+ frag_id1 = frag_id_6to4 (frag1->identification);
+ frag_more0 = ip6_frag_hdr_more (frag0);
+ frag_more1 = ip6_frag_hdr_more (frag1);
+ frag_offset0 = ip6_frag_hdr_offset (frag0);
+ frag_offset1 = ip6_frag_hdr_offset (frag1);
+
+ ip40->dst_address.as_u32 = vnet_buffer (p0)->map_t.v6.daddr;
+ ip41->dst_address.as_u32 = vnet_buffer (p1)->map_t.v6.daddr;
+ ip40->src_address.as_u32 = vnet_buffer (p0)->map_t.v6.saddr;
+ ip41->src_address.as_u32 = vnet_buffer (p1)->map_t.v6.saddr;
+ ip40->ip_version_and_header_length =
+ IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
+ ip41->ip_version_and_header_length =
+ IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
+ ip40->tos = ip6_translate_tos (ip60);
+ ip41->tos = ip6_translate_tos (ip61);
+ ip40->length = u16_net_add (ip60->payload_length,
+ sizeof (*ip40) -
+ vnet_buffer (p0)->map_t.v6.l4_offset +
+ sizeof (*ip60));
+ ip41->length =
+ u16_net_add (ip61->payload_length,
+ sizeof (*ip40) -
+ vnet_buffer (p1)->map_t.v6.l4_offset +
+ sizeof (*ip60));
+ ip40->fragment_id = frag_id0;
+ ip41->fragment_id = frag_id1;
+ ip40->flags_and_fragment_offset =
+ clib_host_to_net_u16 (frag_offset0 |
+ (frag_more0 ? IP4_HEADER_FLAG_MORE_FRAGMENTS
+ : 0));
+ ip41->flags_and_fragment_offset =
+ clib_host_to_net_u16 (frag_offset1 |
+ (frag_more1 ? IP4_HEADER_FLAG_MORE_FRAGMENTS
+ : 0));
+ ip40->ttl = ip60->hop_limit;
+ ip41->ttl = ip61->hop_limit;
+ ip40->protocol =
+ (vnet_buffer (p0)->map_t.v6.l4_protocol ==
+ IP_PROTOCOL_ICMP6) ? IP_PROTOCOL_ICMP : vnet_buffer (p0)->
+ map_t.v6.l4_protocol;
+ ip41->protocol =
+ (vnet_buffer (p1)->map_t.v6.l4_protocol ==
+ IP_PROTOCOL_ICMP6) ? IP_PROTOCOL_ICMP : vnet_buffer (p1)->
+ map_t.v6.l4_protocol;
+ ip40->checksum = ip4_header_checksum (ip40);
+ ip41->checksum = ip4_header_checksum (ip41);
+
+ if (vnet_buffer (p0)->map_t.mtu < p0->current_length)
+ {
+ vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu;
+ vnet_buffer (p0)->ip_frag.header_offset = 0;
+ vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
+ next0 = IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG;
+ }
+
+ if (vnet_buffer (p1)->map_t.mtu < p1->current_length)
+ {
+ vnet_buffer (p1)->ip_frag.mtu = vnet_buffer (p1)->map_t.mtu;
+ vnet_buffer (p1)->ip_frag.header_offset = 0;
+ vnet_buffer (p1)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
+ next1 = IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG;
+ }
+
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next, pi0, pi1,
+ next0, next1);
+ }
#endif
- while (n_left_from > 0 && n_left_to_next > 0) {
- u32 pi0;
- vlib_buffer_t *p0;
- ip6_header_t *ip60;
- ip6_frag_hdr_t *frag0;
- ip4_header_t *ip40;
- u16 frag_id0;
- u8 frag_more0;
- u16 frag_offset0;
- u32 next0;
-
- pi0 = to_next[0] = from[0];
- from += 1;
- n_left_from -= 1;
- to_next +=1;
- n_left_to_next -= 1;
-
- next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
- p0 = vlib_get_buffer(vm, pi0);
- ip60 = vlib_buffer_get_current(p0);
- frag0 = (ip6_frag_hdr_t *)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.frag_offset);
- ip40 = (ip4_header_t *)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset - sizeof(*ip40));
- vlib_buffer_advance(p0, vnet_buffer(p0)->map_t.v6.l4_offset - sizeof(*ip40));
-
- frag_id0 = frag_id_6to4(frag0->identification);
- frag_more0 = ip6_frag_hdr_more(frag0);
- frag_offset0 = ip6_frag_hdr_offset(frag0);
-
- ip40->dst_address.as_u32 = vnet_buffer(p0)->map_t.v6.daddr;
- ip40->src_address.as_u32 = vnet_buffer(p0)->map_t.v6.saddr;
- ip40->ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
- ip40->tos = ip6_translate_tos(ip60);
- ip40->length = u16_net_add(ip60->payload_length,
- sizeof(*ip40) - vnet_buffer(p0)->map_t.v6.l4_offset + sizeof(*ip60));
- ip40->fragment_id = frag_id0;
- ip40->flags_and_fragment_offset =
- clib_host_to_net_u16(frag_offset0 | (frag_more0?IP4_HEADER_FLAG_MORE_FRAGMENTS:0));
- ip40->ttl = ip60->hop_limit;
- ip40->protocol = (vnet_buffer(p0)->map_t.v6.l4_protocol == IP_PROTOCOL_ICMP6)?
- IP_PROTOCOL_ICMP:vnet_buffer(p0)->map_t.v6.l4_protocol;
- ip40->checksum = ip4_header_checksum(ip40);
-
- if(vnet_buffer(p0)->map_t.mtu < p0->current_length) {
- //Send to fragmentation node if necessary
- vnet_buffer(p0)->ip_frag.mtu = vnet_buffer(p0)->map_t.mtu;
- vnet_buffer(p0)->ip_frag.header_offset = 0;
- vnet_buffer(p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
- next0 = IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG;
- }
-
- vlib_validate_buffer_enqueue_x1(vm, node, next_index,
- to_next, n_left_to_next, pi0,
- next0);
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 pi0;
+ vlib_buffer_t *p0;
+ ip6_header_t *ip60;
+ ip6_frag_hdr_t *frag0;
+ ip4_header_t *ip40;
+ u16 frag_id0;
+ u8 frag_more0;
+ u16 frag_offset0;
+ u32 next0;
+
+ pi0 = to_next[0] = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
+ p0 = vlib_get_buffer (vm, pi0);
+ ip60 = vlib_buffer_get_current (p0);
+ frag0 =
+ (ip6_frag_hdr_t *) u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.
+ v6.frag_offset);
+ ip40 =
+ (ip4_header_t *) u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.
+ v6.l4_offset - sizeof (*ip40));
+ vlib_buffer_advance (p0,
+ vnet_buffer (p0)->map_t.v6.l4_offset -
+ sizeof (*ip40));
+
+ frag_id0 = frag_id_6to4 (frag0->identification);
+ frag_more0 = ip6_frag_hdr_more (frag0);
+ frag_offset0 = ip6_frag_hdr_offset (frag0);
+
+ ip40->dst_address.as_u32 = vnet_buffer (p0)->map_t.v6.daddr;
+ ip40->src_address.as_u32 = vnet_buffer (p0)->map_t.v6.saddr;
+ ip40->ip_version_and_header_length =
+ IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
+ ip40->tos = ip6_translate_tos (ip60);
+ ip40->length = u16_net_add (ip60->payload_length,
+ sizeof (*ip40) -
+ vnet_buffer (p0)->map_t.v6.l4_offset +
+ sizeof (*ip60));
+ ip40->fragment_id = frag_id0;
+ ip40->flags_and_fragment_offset =
+ clib_host_to_net_u16 (frag_offset0 |
+ (frag_more0 ? IP4_HEADER_FLAG_MORE_FRAGMENTS
+ : 0));
+ ip40->ttl = ip60->hop_limit;
+ ip40->protocol =
+ (vnet_buffer (p0)->map_t.v6.l4_protocol ==
+ IP_PROTOCOL_ICMP6) ? IP_PROTOCOL_ICMP : vnet_buffer (p0)->
+ map_t.v6.l4_protocol;
+ ip40->checksum = ip4_header_checksum (ip40);
+
+ if (vnet_buffer (p0)->map_t.mtu < p0->current_length)
+ {
+ //Send to fragmentation node if necessary
+ vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu;
+ vnet_buffer (p0)->ip_frag.header_offset = 0;
+ vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
+ next0 = IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG;
+ }
+
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next, pi0,
+ next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_put_next_frame(vm, node, next_index, n_left_to_next);
- }
return frame->n_vectors;
}
static uword
-ip6_map_t_tcp_udp (vlib_main_t *vm,
- vlib_node_runtime_t *node,
- vlib_frame_t *frame)
+ip6_map_t_tcp_udp (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
{
u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
- from = vlib_frame_vector_args(frame);
+ from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
- while (n_left_from > 0) {
- vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
+ while (n_left_from > 0)
+ {
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
#ifdef IP6_MAP_T_DUAL_LOOP
- while(n_left_from >= 4 && n_left_to_next >= 2) {
- u32 pi0, pi1;
- vlib_buffer_t *p0, *p1;
- ip6_header_t *ip60, *ip61;
- ip_csum_t csum0, csum1;
- ip4_header_t *ip40, *ip41;
- u16 fragment_id0, flags0, *checksum0,
- fragment_id1, flags1, *checksum1;
- ip6_mapt_tcp_udp_next_t next0, next1;
-
- pi0 = to_next[0] = from[0];
- pi1 = to_next[1] = from[1];
- from += 2;
- n_left_from -= 2;
- to_next += 2;
- n_left_to_next -= 2;
- next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
- next1 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
-
- p0 = vlib_get_buffer(vm, pi0);
- p1 = vlib_get_buffer(vm, pi1);
- ip60 = vlib_buffer_get_current(p0);
- ip61 = vlib_buffer_get_current(p1);
- ip40 = (ip4_header_t *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset - sizeof(*ip40));
- ip41 = (ip4_header_t *) u8_ptr_add(ip61, vnet_buffer(p1)->map_t.v6.l4_offset - sizeof(*ip40));
- vlib_buffer_advance(p0, vnet_buffer(p0)->map_t.v6.l4_offset - sizeof(*ip40));
- vlib_buffer_advance(p1, vnet_buffer(p1)->map_t.v6.l4_offset - sizeof(*ip40));
- checksum0 = (u16 *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.checksum_offset);
- checksum1 = (u16 *) u8_ptr_add(ip61, vnet_buffer(p1)->map_t.checksum_offset);
-
- csum0 = ip_csum_sub_even(*checksum0, ip60->src_address.as_u64[0]);
- csum1 = ip_csum_sub_even(*checksum1, ip61->src_address.as_u64[0]);
- csum0 = ip_csum_sub_even(csum0, ip60->src_address.as_u64[1]);
- csum1 = ip_csum_sub_even(csum1, ip61->src_address.as_u64[1]);
- csum0 = ip_csum_sub_even(csum0, ip60->dst_address.as_u64[0]);
- csum1 = ip_csum_sub_even(csum0, ip61->dst_address.as_u64[0]);
- csum0 = ip_csum_sub_even(csum0, ip60->dst_address.as_u64[1]);
- csum1 = ip_csum_sub_even(csum1, ip61->dst_address.as_u64[1]);
- csum0 = ip_csum_add_even(csum0, vnet_buffer(p0)->map_t.v6.daddr);
- csum1 = ip_csum_add_even(csum1, vnet_buffer(p1)->map_t.v6.daddr);
- csum0 = ip_csum_add_even(csum0, vnet_buffer(p0)->map_t.v6.saddr);
- csum1 = ip_csum_add_even(csum1, vnet_buffer(p1)->map_t.v6.saddr);
- *checksum0 = ip_csum_fold(csum0);
- *checksum1 = ip_csum_fold(csum1);
-
- if (PREDICT_FALSE(vnet_buffer(p0)->map_t.v6.frag_offset)) {
- ip6_frag_hdr_t *hdr = (ip6_frag_hdr_t *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.frag_offset);
- fragment_id0 = frag_id_6to4(hdr->identification);
- flags0 = clib_host_to_net_u16(IP4_HEADER_FLAG_MORE_FRAGMENTS);
- } else {
- fragment_id0 = 0;
- flags0 = 0;
- }
-
- if (PREDICT_FALSE(vnet_buffer(p1)->map_t.v6.frag_offset)) {
- ip6_frag_hdr_t *hdr = (ip6_frag_hdr_t *) u8_ptr_add(ip61, vnet_buffer(p1)->map_t.v6.frag_offset);
- fragment_id1 = frag_id_6to4(hdr->identification);
- flags1 = clib_host_to_net_u16(IP4_HEADER_FLAG_MORE_FRAGMENTS);
- } else {
- fragment_id1 = 0;
- flags1 = 0;
- }
-
- ip40->dst_address.as_u32 = vnet_buffer(p0)->map_t.v6.daddr;
- ip41->dst_address.as_u32 = vnet_buffer(p1)->map_t.v6.daddr;
- ip40->src_address.as_u32 = vnet_buffer(p0)->map_t.v6.saddr;
- ip41->src_address.as_u32 = vnet_buffer(p1)->map_t.v6.saddr;
- ip40->ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
- ip41->ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
- ip40->tos = ip6_translate_tos(ip60);
- ip41->tos = ip6_translate_tos(ip61);
- ip40->length = u16_net_add(ip60->payload_length,
- sizeof(*ip40) + sizeof(*ip60) - vnet_buffer(p0)->map_t.v6.l4_offset);
- ip41->length = u16_net_add(ip61->payload_length,
- sizeof(*ip40) + sizeof(*ip60) - vnet_buffer(p1)->map_t.v6.l4_offset);
- ip40->fragment_id = fragment_id0;
- ip41->fragment_id = fragment_id1;
- ip40->flags_and_fragment_offset = flags0;
- ip41->flags_and_fragment_offset = flags1;
- ip40->ttl = ip60->hop_limit;
- ip41->ttl = ip61->hop_limit;
- ip40->protocol = vnet_buffer(p0)->map_t.v6.l4_protocol;
- ip41->protocol = vnet_buffer(p1)->map_t.v6.l4_protocol;
- ip40->checksum = ip4_header_checksum(ip40);
- ip41->checksum = ip4_header_checksum(ip41);
-
- if(vnet_buffer(p0)->map_t.mtu < p0->current_length) {
- vnet_buffer(p0)->ip_frag.mtu = vnet_buffer(p0)->map_t.mtu;
- vnet_buffer(p0)->ip_frag.header_offset = 0;
- vnet_buffer(p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
- next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG;
- }
-
- if(vnet_buffer(p1)->map_t.mtu < p1->current_length) {
- vnet_buffer(p1)->ip_frag.mtu = vnet_buffer(p1)->map_t.mtu;
- vnet_buffer(p1)->ip_frag.header_offset = 0;
- vnet_buffer(p1)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
- next1 = IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG;
- }
-
- vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
- n_left_to_next, pi0, pi1, next0, next1);
- }
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ u32 pi0, pi1;
+ vlib_buffer_t *p0, *p1;
+ ip6_header_t *ip60, *ip61;
+ ip_csum_t csum0, csum1;
+ ip4_header_t *ip40, *ip41;
+ u16 fragment_id0, flags0, *checksum0,
+ fragment_id1, flags1, *checksum1;
+ ip6_mapt_tcp_udp_next_t next0, next1;
+
+ pi0 = to_next[0] = from[0];
+ pi1 = to_next[1] = from[1];
+ from += 2;
+ n_left_from -= 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+ next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
+ next1 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
+
+ p0 = vlib_get_buffer (vm, pi0);
+ p1 = vlib_get_buffer (vm, pi1);
+ ip60 = vlib_buffer_get_current (p0);
+ ip61 = vlib_buffer_get_current (p1);
+ ip40 =
+ (ip4_header_t *) u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.
+ v6.l4_offset - sizeof (*ip40));
+ ip41 =
+ (ip4_header_t *) u8_ptr_add (ip61,
+ vnet_buffer (p1)->map_t.
+ v6.l4_offset - sizeof (*ip40));
+ vlib_buffer_advance (p0,
+ vnet_buffer (p0)->map_t.v6.l4_offset -
+ sizeof (*ip40));
+ vlib_buffer_advance (p1,
+ vnet_buffer (p1)->map_t.v6.l4_offset -
+ sizeof (*ip40));
+ checksum0 =
+ (u16 *) u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.checksum_offset);
+ checksum1 =
+ (u16 *) u8_ptr_add (ip61,
+ vnet_buffer (p1)->map_t.checksum_offset);
+
+ csum0 = ip_csum_sub_even (*checksum0, ip60->src_address.as_u64[0]);
+ csum1 = ip_csum_sub_even (*checksum1, ip61->src_address.as_u64[0]);
+ csum0 = ip_csum_sub_even (csum0, ip60->src_address.as_u64[1]);
+ csum1 = ip_csum_sub_even (csum1, ip61->src_address.as_u64[1]);
+ csum0 = ip_csum_sub_even (csum0, ip60->dst_address.as_u64[0]);
+ csum1 = ip_csum_sub_even (csum0, ip61->dst_address.as_u64[0]);
+ csum0 = ip_csum_sub_even (csum0, ip60->dst_address.as_u64[1]);
+ csum1 = ip_csum_sub_even (csum1, ip61->dst_address.as_u64[1]);
+ csum0 = ip_csum_add_even (csum0, vnet_buffer (p0)->map_t.v6.daddr);
+ csum1 = ip_csum_add_even (csum1, vnet_buffer (p1)->map_t.v6.daddr);
+ csum0 = ip_csum_add_even (csum0, vnet_buffer (p0)->map_t.v6.saddr);
+ csum1 = ip_csum_add_even (csum1, vnet_buffer (p1)->map_t.v6.saddr);
+ *checksum0 = ip_csum_fold (csum0);
+ *checksum1 = ip_csum_fold (csum1);
+
+ if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset))
+ {
+ ip6_frag_hdr_t *hdr = (ip6_frag_hdr_t *) u8_ptr_add (ip60,
+ vnet_buffer
+ (p0)->
+ map_t.
+ v6.frag_offset);
+ fragment_id0 = frag_id_6to4 (hdr->identification);
+ flags0 = clib_host_to_net_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS);
+ }
+ else
+ {
+ fragment_id0 = 0;
+ flags0 = 0;
+ }
+
+ if (PREDICT_FALSE (vnet_buffer (p1)->map_t.v6.frag_offset))
+ {
+ ip6_frag_hdr_t *hdr = (ip6_frag_hdr_t *) u8_ptr_add (ip61,
+ vnet_buffer
+ (p1)->
+ map_t.
+ v6.frag_offset);
+ fragment_id1 = frag_id_6to4 (hdr->identification);
+ flags1 = clib_host_to_net_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS);
+ }
+ else
+ {
+ fragment_id1 = 0;
+ flags1 = 0;
+ }
+
+ ip40->dst_address.as_u32 = vnet_buffer (p0)->map_t.v6.daddr;
+ ip41->dst_address.as_u32 = vnet_buffer (p1)->map_t.v6.daddr;
+ ip40->src_address.as_u32 = vnet_buffer (p0)->map_t.v6.saddr;
+ ip41->src_address.as_u32 = vnet_buffer (p1)->map_t.v6.saddr;
+ ip40->ip_version_and_header_length =
+ IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
+ ip41->ip_version_and_header_length =
+ IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
+ ip40->tos = ip6_translate_tos (ip60);
+ ip41->tos = ip6_translate_tos (ip61);
+ ip40->length = u16_net_add (ip60->payload_length,
+ sizeof (*ip40) + sizeof (*ip60) -
+ vnet_buffer (p0)->map_t.v6.l4_offset);
+ ip41->length =
+ u16_net_add (ip61->payload_length,
+ sizeof (*ip40) + sizeof (*ip60) -
+ vnet_buffer (p1)->map_t.v6.l4_offset);
+ ip40->fragment_id = fragment_id0;
+ ip41->fragment_id = fragment_id1;
+ ip40->flags_and_fragment_offset = flags0;
+ ip41->flags_and_fragment_offset = flags1;
+ ip40->ttl = ip60->hop_limit;
+ ip41->ttl = ip61->hop_limit;
+ ip40->protocol = vnet_buffer (p0)->map_t.v6.l4_protocol;
+ ip41->protocol = vnet_buffer (p1)->map_t.v6.l4_protocol;
+ ip40->checksum = ip4_header_checksum (ip40);
+ ip41->checksum = ip4_header_checksum (ip41);
+
+ if (vnet_buffer (p0)->map_t.mtu < p0->current_length)
+ {
+ vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu;
+ vnet_buffer (p0)->ip_frag.header_offset = 0;
+ vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
+ next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG;
+ }
+
+ if (vnet_buffer (p1)->map_t.mtu < p1->current_length)
+ {
+ vnet_buffer (p1)->ip_frag.mtu = vnet_buffer (p1)->map_t.mtu;
+ vnet_buffer (p1)->ip_frag.header_offset = 0;
+ vnet_buffer (p1)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
+ next1 = IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG;
+ }
+
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
+ n_left_to_next, pi0, pi1, next0,
+ next1);
+ }
#endif
- while (n_left_from > 0 && n_left_to_next > 0) {
- u32 pi0;
- vlib_buffer_t *p0;
- ip6_header_t *ip60;
- u16 *checksum0;
- ip_csum_t csum0;
- ip4_header_t *ip40;
- u16 fragment_id0;
- u16 flags0;
- ip6_mapt_tcp_udp_next_t next0;
-
- pi0 = to_next[0] = from[0];
- from += 1;
- n_left_from -= 1;
- to_next +=1;
- n_left_to_next -= 1;
- next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
-
- p0 = vlib_get_buffer(vm, pi0);
- ip60 = vlib_buffer_get_current(p0);
- ip40 = (ip4_header_t *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset - sizeof(*ip40));
- vlib_buffer_advance(p0, vnet_buffer(p0)->map_t.v6.l4_offset - sizeof(*ip40));
- checksum0 = (u16 *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.checksum_offset);
-
- //TODO: This can probably be optimized
- csum0 = ip_csum_sub_even(*checksum0, ip60->src_address.as_u64[0]);
- csum0 = ip_csum_sub_even(csum0, ip60->src_address.as_u64[1]);
- csum0 = ip_csum_sub_even(csum0, ip60->dst_address.as_u64[0]);
- csum0 = ip_csum_sub_even(csum0, ip60->dst_address.as_u64[1]);
- csum0 = ip_csum_add_even(csum0, vnet_buffer(p0)->map_t.v6.daddr);
- csum0 = ip_csum_add_even(csum0, vnet_buffer(p0)->map_t.v6.saddr);
- *checksum0 = ip_csum_fold(csum0);
-
- if (PREDICT_FALSE(vnet_buffer(p0)->map_t.v6.frag_offset)) {
- //Only the first fragment
- ip6_frag_hdr_t *hdr = (ip6_frag_hdr_t *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.frag_offset);
- fragment_id0 = frag_id_6to4(hdr->identification);
- flags0 = clib_host_to_net_u16(IP4_HEADER_FLAG_MORE_FRAGMENTS);
- } else {
- fragment_id0 = 0;
- flags0 = 0;
- }
-
- ip40->dst_address.as_u32 = vnet_buffer(p0)->map_t.v6.daddr;
- ip40->src_address.as_u32 = vnet_buffer(p0)->map_t.v6.saddr;
- ip40->ip_version_and_header_length = IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
- ip40->tos = ip6_translate_tos(ip60);
- ip40->length = u16_net_add(ip60->payload_length,
- sizeof(*ip40) + sizeof(*ip60) - vnet_buffer(p0)->map_t.v6.l4_offset);
- ip40->fragment_id = fragment_id0;
- ip40->flags_and_fragment_offset = flags0;
- ip40->ttl = ip60->hop_limit;
- ip40->protocol = vnet_buffer(p0)->map_t.v6.l4_protocol;
- ip40->checksum = ip4_header_checksum(ip40);
-
- if(vnet_buffer(p0)->map_t.mtu < p0->current_length) {
- //Send to fragmentation node if necessary
- vnet_buffer(p0)->ip_frag.mtu = vnet_buffer(p0)->map_t.mtu;
- vnet_buffer(p0)->ip_frag.header_offset = 0;
- vnet_buffer(p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
- next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG;
- }
-
- vlib_validate_buffer_enqueue_x1(vm, node, next_index,
- to_next, n_left_to_next, pi0,
- next0);
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 pi0;
+ vlib_buffer_t *p0;
+ ip6_header_t *ip60;
+ u16 *checksum0;
+ ip_csum_t csum0;
+ ip4_header_t *ip40;
+ u16 fragment_id0;
+ u16 flags0;
+ ip6_mapt_tcp_udp_next_t next0;
+
+ pi0 = to_next[0] = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+ next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
+
+ p0 = vlib_get_buffer (vm, pi0);
+ ip60 = vlib_buffer_get_current (p0);
+ ip40 =
+ (ip4_header_t *) u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.
+ v6.l4_offset - sizeof (*ip40));
+ vlib_buffer_advance (p0,
+ vnet_buffer (p0)->map_t.v6.l4_offset -
+ sizeof (*ip40));
+ checksum0 =
+ (u16 *) u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.checksum_offset);
+
+ //TODO: This can probably be optimized
+ csum0 = ip_csum_sub_even (*checksum0, ip60->src_address.as_u64[0]);
+ csum0 = ip_csum_sub_even (csum0, ip60->src_address.as_u64[1]);
+ csum0 = ip_csum_sub_even (csum0, ip60->dst_address.as_u64[0]);
+ csum0 = ip_csum_sub_even (csum0, ip60->dst_address.as_u64[1]);
+ csum0 = ip_csum_add_even (csum0, vnet_buffer (p0)->map_t.v6.daddr);
+ csum0 = ip_csum_add_even (csum0, vnet_buffer (p0)->map_t.v6.saddr);
+ *checksum0 = ip_csum_fold (csum0);
+
+ if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset))
+ {
+ //Only the first fragment
+ ip6_frag_hdr_t *hdr = (ip6_frag_hdr_t *) u8_ptr_add (ip60,
+ vnet_buffer
+ (p0)->
+ map_t.
+ v6.frag_offset);
+ fragment_id0 = frag_id_6to4 (hdr->identification);
+ flags0 = clib_host_to_net_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS);
+ }
+ else
+ {
+ fragment_id0 = 0;
+ flags0 = 0;
+ }
+
+ ip40->dst_address.as_u32 = vnet_buffer (p0)->map_t.v6.daddr;
+ ip40->src_address.as_u32 = vnet_buffer (p0)->map_t.v6.saddr;
+ ip40->ip_version_and_header_length =
+ IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
+ ip40->tos = ip6_translate_tos (ip60);
+ ip40->length = u16_net_add (ip60->payload_length,
+ sizeof (*ip40) + sizeof (*ip60) -
+ vnet_buffer (p0)->map_t.v6.l4_offset);
+ ip40->fragment_id = fragment_id0;
+ ip40->flags_and_fragment_offset = flags0;
+ ip40->ttl = ip60->hop_limit;
+ ip40->protocol = vnet_buffer (p0)->map_t.v6.l4_protocol;
+ ip40->checksum = ip4_header_checksum (ip40);
+
+ if (vnet_buffer (p0)->map_t.mtu < p0->current_length)
+ {
+ //Send to fragmentation node if necessary
+ vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu;
+ vnet_buffer (p0)->ip_frag.header_offset = 0;
+ vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
+ next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG;
+ }
+
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next, pi0,
+ next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_put_next_frame(vm, node, next_index, n_left_to_next);
- }
return frame->n_vectors;
}
static_always_inline void
-ip6_map_t_classify(vlib_buffer_t *p0, ip6_header_t *ip60,
- map_domain_t *d0, i32 *src_port0,
- u8 *error0, ip6_mapt_next_t *next0,
- u32 l4_len0, ip6_frag_hdr_t *frag0)
+ip6_map_t_classify (vlib_buffer_t * p0, ip6_header_t * ip60,
+ map_domain_t * d0, i32 * src_port0,
+ u8 * error0, ip6_mapt_next_t * next0,
+ u32 l4_len0, ip6_frag_hdr_t * frag0)
{
- if (PREDICT_FALSE(vnet_buffer(p0)->map_t.v6.frag_offset &&
- ip6_frag_hdr_offset(frag0))) {
- *next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED;
- if(d0->ea_bits_len == 0 && d0->rules) {
- *src_port0 = 0;
- } else {
- *src_port0 = ip6_map_fragment_get(ip60, frag0, d0);
- *error0 = (*src_port0 != -1) ? *error0 : MAP_ERROR_FRAGMENT_DROPPED;
+ if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset &&
+ ip6_frag_hdr_offset (frag0)))
+ {
+ *next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED;
+ if (d0->ea_bits_len == 0 && d0->rules)
+ {
+ *src_port0 = 0;
+ }
+ else
+ {
+ *src_port0 = ip6_map_fragment_get (ip60, frag0, d0);
+ *error0 = (*src_port0 != -1) ? *error0 : MAP_ERROR_FRAGMENT_DROPPED;
+ }
+ }
+ else
+ if (PREDICT_TRUE
+ (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_TCP))
+ {
+ *error0 =
+ l4_len0 < sizeof (tcp_header_t) ? MAP_ERROR_MALFORMED : *error0;
+ vnet_buffer (p0)->map_t.checksum_offset =
+ vnet_buffer (p0)->map_t.v6.l4_offset + 16;
+ *next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
+ *src_port0 =
+ (i32) *
+ ((u16 *) u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset));
+ }
+ else
+ if (PREDICT_TRUE
+ (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_UDP))
+ {
+ *error0 =
+ l4_len0 < sizeof (udp_header_t) ? MAP_ERROR_MALFORMED : *error0;
+ vnet_buffer (p0)->map_t.checksum_offset =
+ vnet_buffer (p0)->map_t.v6.l4_offset + 6;
+ *next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
+ *src_port0 =
+ (i32) *
+ ((u16 *) u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset));
}
- } else if (PREDICT_TRUE(vnet_buffer(p0)->map_t.v6.l4_protocol == IP_PROTOCOL_TCP)) {
- *error0 = l4_len0 < sizeof(tcp_header_t) ? MAP_ERROR_MALFORMED : *error0;
- vnet_buffer(p0)->map_t.checksum_offset = vnet_buffer(p0)->map_t.v6.l4_offset + 16;
- *next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
- *src_port0 = (i32) *((u16*)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset));
- } else if (PREDICT_TRUE(vnet_buffer(p0)->map_t.v6.l4_protocol == IP_PROTOCOL_UDP)) {
- *error0 = l4_len0 < sizeof(udp_header_t) ? MAP_ERROR_MALFORMED : *error0;
- vnet_buffer(p0)->map_t.checksum_offset = vnet_buffer(p0)->map_t.v6.l4_offset + 6;
- *next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
- *src_port0 = (i32) *((u16*)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset));
- } else if (vnet_buffer(p0)->map_t.v6.l4_protocol == IP_PROTOCOL_ICMP6) {
- *error0 = l4_len0 < sizeof(icmp46_header_t) ? MAP_ERROR_MALFORMED : *error0;
- *next0 = IP6_MAPT_NEXT_MAPT_ICMP;
- if(d0->ea_bits_len == 0 && d0->rules) {
- *src_port0 = 0;
- } else if (((icmp46_header_t *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset))->code == ICMP6_echo_reply ||
- ((icmp46_header_t *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset))->code == ICMP6_echo_request) {
- *src_port0 = (i32) *((u16 *)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset + 6));
+ else if (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_ICMP6)
+ {
+ *error0 =
+ l4_len0 < sizeof (icmp46_header_t) ? MAP_ERROR_MALFORMED : *error0;
+ *next0 = IP6_MAPT_NEXT_MAPT_ICMP;
+ if (d0->ea_bits_len == 0 && d0->rules)
+ {
+ *src_port0 = 0;
+ }
+ else
+ if (((icmp46_header_t *)
+ u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.v6.l4_offset))->code ==
+ ICMP6_echo_reply
+ || ((icmp46_header_t *)
+ u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.v6.l4_offset))->code ==
+ ICMP6_echo_request)
+ {
+ *src_port0 =
+ (i32) *
+ ((u16 *)
+ u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset + 6));
+ }
+ }
+ else
+ {
+ //TODO: In case of 1:1 mapping, it might be possible to do something with those packets.
+ *error0 = MAP_ERROR_BAD_PROTOCOL;
}
- } else {
- //TODO: In case of 1:1 mapping, it might be possible to do something with those packets.
- *error0 = MAP_ERROR_BAD_PROTOCOL;
- }
}
static uword
-ip6_map_t (vlib_main_t *vm,
- vlib_node_runtime_t *node,
- vlib_frame_t *frame)
+ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
{
u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
- vlib_node_runtime_t *error_node = vlib_node_get_runtime(vm, ip6_map_t_node.index);
+ vlib_node_runtime_t *error_node =
+ vlib_node_get_runtime (vm, ip6_map_t_node.index);
vlib_combined_counter_main_t *cm = map_main.domain_counters;
- u32 cpu_index = os_get_cpu_number();
+ u32 cpu_index = os_get_cpu_number ();
- from = vlib_frame_vector_args(frame);
+ from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
- while (n_left_from > 0) {
- vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
+ while (n_left_from > 0)
+ {
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
#ifdef IP6_MAP_T_DUAL_LOOP
- while (n_left_from >= 4 && n_left_to_next >=2) {
- u32 pi0, pi1;
- vlib_buffer_t *p0, *p1;
- ip6_header_t *ip60, *ip61;
- u8 error0, error1;
- ip6_mapt_next_t next0, next1;
- u32 l4_len0, l4_len1;
- i32 src_port0, src_port1;
- map_domain_t *d0, *d1;
- ip6_frag_hdr_t *frag0, *frag1;
- u32 saddr0, saddr1;
- next0 = next1 = 0; //Because compiler whines
-
- pi0 = to_next[0] = from[0];
- pi1 = to_next[1] = from[1];
- from += 2;
- n_left_from -= 2;
- to_next += 2;
- n_left_to_next -= 2;
-
- error0 = MAP_ERROR_NONE;
- error1 = MAP_ERROR_NONE;
-
- p0 = vlib_get_buffer(vm, pi0);
- p1 = vlib_get_buffer(vm, pi1);
- ip60 = vlib_buffer_get_current(p0);
- ip61 = vlib_buffer_get_current(p1);
-
- saddr0 = map_get_ip4(&ip60->src_address);
- saddr1 = map_get_ip4(&ip61->src_address);
- d0 = ip6_map_get_domain(vnet_buffer(p0)->ip.adj_index[VLIB_TX],
- (ip4_address_t *)&saddr0,
- &vnet_buffer(p0)->map_t.map_domain_index, &error0);
- d1 = ip6_map_get_domain(vnet_buffer(p1)->ip.adj_index[VLIB_TX],
- (ip4_address_t *)&saddr1,
- &vnet_buffer(p1)->map_t.map_domain_index, &error1);
-
- vnet_buffer(p0)->map_t.v6.saddr = saddr0;
- vnet_buffer(p1)->map_t.v6.saddr = saddr1;
- vnet_buffer(p0)->map_t.v6.daddr = ip6_map_t_embedded_address(d0, &ip60->dst_address);
- vnet_buffer(p1)->map_t.v6.daddr = ip6_map_t_embedded_address(d1, &ip61->dst_address);
- vnet_buffer(p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0;
- vnet_buffer(p1)->map_t.mtu = d1->mtu ? d1->mtu : ~0;
-
- if (PREDICT_FALSE(ip6_parse(ip60, p0->current_length,
- &(vnet_buffer(p0)->map_t.v6.l4_protocol),
- &(vnet_buffer(p0)->map_t.v6.l4_offset),
- &(vnet_buffer(p0)->map_t.v6.frag_offset)))) {
- error0 = MAP_ERROR_MALFORMED;
- next0 = IP6_MAPT_NEXT_DROP;
- }
-
- if (PREDICT_FALSE(ip6_parse(ip61, p1->current_length,
- &(vnet_buffer(p1)->map_t.v6.l4_protocol),
- &(vnet_buffer(p1)->map_t.v6.l4_offset),
- &(vnet_buffer(p1)->map_t.v6.frag_offset)))) {
- error1 = MAP_ERROR_MALFORMED;
- next1 = IP6_MAPT_NEXT_DROP;
- }
-
- src_port0 = src_port1 = -1;
- l4_len0 = (u32)clib_net_to_host_u16(ip60->payload_length) +
- sizeof(*ip60) - vnet_buffer(p0)->map_t.v6.l4_offset;
- l4_len1 = (u32)clib_net_to_host_u16(ip61->payload_length) +
- sizeof(*ip60) - vnet_buffer(p1)->map_t.v6.l4_offset;
- frag0 = (ip6_frag_hdr_t *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.frag_offset);
- frag1 = (ip6_frag_hdr_t *) u8_ptr_add(ip61, vnet_buffer(p1)->map_t.v6.frag_offset);
-
- ip6_map_t_classify(p0, ip60, d0, &src_port0, &error0, &next0, l4_len0, frag0);
- ip6_map_t_classify(p1, ip61, d1, &src_port1, &error1, &next1, l4_len1, frag1);
-
- if (PREDICT_FALSE((src_port0 != -1) && (
- ip60->src_address.as_u64[0] != map_get_pfx_net(d0, vnet_buffer(p0)->map_t.v6.saddr, src_port0) ||
- ip60->src_address.as_u64[1] != map_get_sfx_net(d0, vnet_buffer(p0)->map_t.v6.saddr, src_port0)))) {
- error0 = MAP_ERROR_SEC_CHECK;
- }
-
- if (PREDICT_FALSE((src_port1 != -1) && (
- ip61->src_address.as_u64[0] != map_get_pfx_net(d1, vnet_buffer(p1)->map_t.v6.saddr, src_port1) ||
- ip61->src_address.as_u64[1] != map_get_sfx_net(d1, vnet_buffer(p1)->map_t.v6.saddr, src_port1)))) {
- error1 = MAP_ERROR_SEC_CHECK;
- }
-
- if (PREDICT_FALSE(vnet_buffer(p0)->map_t.v6.frag_offset &&
- !ip6_frag_hdr_offset((ip6_frag_hdr_t *)
- u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.frag_offset))) &&
- (src_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules) && (error0 == MAP_ERROR_NONE)) {
- ip6_map_fragment_cache(ip60,
- (ip6_frag_hdr_t *)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.frag_offset),
- d0, src_port0);
- }
-
- if (PREDICT_FALSE(vnet_buffer(p1)->map_t.v6.frag_offset &&
- !ip6_frag_hdr_offset((ip6_frag_hdr_t *)
- u8_ptr_add(ip61, vnet_buffer(p1)->map_t.v6.frag_offset))) &&
- (src_port1 != -1) && (d1->ea_bits_len != 0 || !d1->rules) && (error1 == MAP_ERROR_NONE)) {
- ip6_map_fragment_cache(ip61,
- (ip6_frag_hdr_t *)u8_ptr_add(ip61, vnet_buffer(p1)->map_t.v6.frag_offset),
- d1, src_port1);
- }
-
- if (PREDICT_TRUE(error0 == MAP_ERROR_NONE && next0 != IP6_MAPT_NEXT_MAPT_ICMP)) {
- vlib_increment_combined_counter(cm + MAP_DOMAIN_COUNTER_RX, cpu_index,
- vnet_buffer(p0)->map_t.map_domain_index, 1,
- clib_net_to_host_u16(ip60->payload_length));
- }
-
- if (PREDICT_TRUE(error1 == MAP_ERROR_NONE && next1 != IP6_MAPT_NEXT_MAPT_ICMP)) {
- vlib_increment_combined_counter(cm + MAP_DOMAIN_COUNTER_RX, cpu_index,
- vnet_buffer(p1)->map_t.map_domain_index, 1,
- clib_net_to_host_u16(ip61->payload_length));
- }
-
- next0 = (error0 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next0;
- next1 = (error1 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next1;
- p0->error = error_node->errors[error0];
- p1->error = error_node->errors[error1];
- vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next, n_left_to_next, pi0, pi1, next0, next1);
- }
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ u32 pi0, pi1;
+ vlib_buffer_t *p0, *p1;
+ ip6_header_t *ip60, *ip61;
+ u8 error0, error1;
+ ip6_mapt_next_t next0, next1;
+ u32 l4_len0, l4_len1;
+ i32 src_port0, src_port1;
+ map_domain_t *d0, *d1;
+ ip6_frag_hdr_t *frag0, *frag1;
+ u32 saddr0, saddr1;
+ next0 = next1 = 0; //Because compiler whines
+
+ pi0 = to_next[0] = from[0];
+ pi1 = to_next[1] = from[1];
+ from += 2;
+ n_left_from -= 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+
+ error0 = MAP_ERROR_NONE;
+ error1 = MAP_ERROR_NONE;
+
+ p0 = vlib_get_buffer (vm, pi0);
+ p1 = vlib_get_buffer (vm, pi1);
+ ip60 = vlib_buffer_get_current (p0);
+ ip61 = vlib_buffer_get_current (p1);
+
+ saddr0 = map_get_ip4 (&ip60->src_address);
+ saddr1 = map_get_ip4 (&ip61->src_address);
+ d0 = ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
+ (ip4_address_t *) & saddr0,
+ &vnet_buffer (p0)->map_t.map_domain_index,
+ &error0);
+ d1 =
+ ip6_map_get_domain (vnet_buffer (p1)->ip.adj_index[VLIB_TX],
+ (ip4_address_t *) & saddr1,
+ &vnet_buffer (p1)->map_t.map_domain_index,
+ &error1);
+
+ vnet_buffer (p0)->map_t.v6.saddr = saddr0;
+ vnet_buffer (p1)->map_t.v6.saddr = saddr1;
+ vnet_buffer (p0)->map_t.v6.daddr =
+ ip6_map_t_embedded_address (d0, &ip60->dst_address);
+ vnet_buffer (p1)->map_t.v6.daddr =
+ ip6_map_t_embedded_address (d1, &ip61->dst_address);
+ vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0;
+ vnet_buffer (p1)->map_t.mtu = d1->mtu ? d1->mtu : ~0;
+
+ if (PREDICT_FALSE (ip6_parse (ip60, p0->current_length,
+ &(vnet_buffer (p0)->map_t.
+ v6.l4_protocol),
+ &(vnet_buffer (p0)->map_t.
+ v6.l4_offset),
+ &(vnet_buffer (p0)->map_t.
+ v6.frag_offset))))
+ {
+ error0 = MAP_ERROR_MALFORMED;
+ next0 = IP6_MAPT_NEXT_DROP;
+ }
+
+ if (PREDICT_FALSE (ip6_parse (ip61, p1->current_length,
+ &(vnet_buffer (p1)->map_t.
+ v6.l4_protocol),
+ &(vnet_buffer (p1)->map_t.
+ v6.l4_offset),
+ &(vnet_buffer (p1)->map_t.
+ v6.frag_offset))))
+ {
+ error1 = MAP_ERROR_MALFORMED;
+ next1 = IP6_MAPT_NEXT_DROP;
+ }
+
+ src_port0 = src_port1 = -1;
+ l4_len0 = (u32) clib_net_to_host_u16 (ip60->payload_length) +
+ sizeof (*ip60) - vnet_buffer (p0)->map_t.v6.l4_offset;
+ l4_len1 = (u32) clib_net_to_host_u16 (ip61->payload_length) +
+ sizeof (*ip60) - vnet_buffer (p1)->map_t.v6.l4_offset;
+ frag0 =
+ (ip6_frag_hdr_t *) u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.
+ v6.frag_offset);
+ frag1 =
+ (ip6_frag_hdr_t *) u8_ptr_add (ip61,
+ vnet_buffer (p1)->map_t.
+ v6.frag_offset);
+
+ ip6_map_t_classify (p0, ip60, d0, &src_port0, &error0, &next0,
+ l4_len0, frag0);
+ ip6_map_t_classify (p1, ip61, d1, &src_port1, &error1, &next1,
+ l4_len1, frag1);
+
+ if (PREDICT_FALSE
+ ((src_port0 != -1)
+ && (ip60->src_address.as_u64[0] !=
+ map_get_pfx_net (d0, vnet_buffer (p0)->map_t.v6.saddr,
+ src_port0)
+ || ip60->src_address.as_u64[1] != map_get_sfx_net (d0,
+ vnet_buffer
+ (p0)->map_t.v6.saddr,
+ src_port0))))
+ {
+ error0 = MAP_ERROR_SEC_CHECK;
+ }
+
+ if (PREDICT_FALSE
+ ((src_port1 != -1)
+ && (ip61->src_address.as_u64[0] !=
+ map_get_pfx_net (d1, vnet_buffer (p1)->map_t.v6.saddr,
+ src_port1)
+ || ip61->src_address.as_u64[1] != map_get_sfx_net (d1,
+ vnet_buffer
+ (p1)->map_t.v6.saddr,
+ src_port1))))
+ {
+ error1 = MAP_ERROR_SEC_CHECK;
+ }
+
+ if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset &&
+ !ip6_frag_hdr_offset ((ip6_frag_hdr_t *)
+ u8_ptr_add (ip60,
+ vnet_buffer
+ (p0)->map_t.
+ v6.frag_offset)))
+ && (src_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules)
+ && (error0 == MAP_ERROR_NONE))
+ {
+ ip6_map_fragment_cache (ip60,
+ (ip6_frag_hdr_t *) u8_ptr_add (ip60,
+ vnet_buffer
+ (p0)->map_t.
+ v6.frag_offset),
+ d0, src_port0);
+ }
+
+ if (PREDICT_FALSE (vnet_buffer (p1)->map_t.v6.frag_offset &&
+ !ip6_frag_hdr_offset ((ip6_frag_hdr_t *)
+ u8_ptr_add (ip61,
+ vnet_buffer
+ (p1)->map_t.
+ v6.frag_offset)))
+ && (src_port1 != -1) && (d1->ea_bits_len != 0 || !d1->rules)
+ && (error1 == MAP_ERROR_NONE))
+ {
+ ip6_map_fragment_cache (ip61,
+ (ip6_frag_hdr_t *) u8_ptr_add (ip61,
+ vnet_buffer
+ (p1)->map_t.
+ v6.frag_offset),
+ d1, src_port1);
+ }
+
+ if (PREDICT_TRUE
+ (error0 == MAP_ERROR_NONE && next0 != IP6_MAPT_NEXT_MAPT_ICMP))
+ {
+ vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX,
+ cpu_index,
+ vnet_buffer (p0)->
+ map_t.map_domain_index, 1,
+ clib_net_to_host_u16
+ (ip60->payload_length));
+ }
+
+ if (PREDICT_TRUE
+ (error1 == MAP_ERROR_NONE && next1 != IP6_MAPT_NEXT_MAPT_ICMP))
+ {
+ vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX,
+ cpu_index,
+ vnet_buffer (p1)->
+ map_t.map_domain_index, 1,
+ clib_net_to_host_u16
+ (ip61->payload_length));
+ }
+
+ next0 = (error0 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next0;
+ next1 = (error1 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next1;
+ p0->error = error_node->errors[error0];
+ p1->error = error_node->errors[error1];
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
+ n_left_to_next, pi0, pi1, next0,
+ next1);
+ }
#endif
- while (n_left_from > 0 && n_left_to_next > 0) {
- u32 pi0;
- vlib_buffer_t *p0;
- ip6_header_t *ip60;
- u8 error0;
- u32 l4_len0;
- i32 src_port0;
- map_domain_t *d0;
- ip6_frag_hdr_t *frag0;
- ip6_mapt_next_t next0 = 0;
- u32 saddr;
-
- pi0 = to_next[0] = from[0];
- from += 1;
- n_left_from -= 1;
- to_next +=1;
- n_left_to_next -= 1;
- error0 = MAP_ERROR_NONE;
-
- p0 = vlib_get_buffer(vm, pi0);
- ip60 = vlib_buffer_get_current(p0);
- //Save saddr in a different variable to not overwrite ip.adj_index
- saddr = map_get_ip4(&ip60->src_address);
- d0 = ip6_map_get_domain(vnet_buffer(p0)->ip.adj_index[VLIB_TX],
- (ip4_address_t *)&saddr,
- &vnet_buffer(p0)->map_t.map_domain_index, &error0);
-
- //FIXME: What if d0 is null
- vnet_buffer(p0)->map_t.v6.saddr = saddr;
- vnet_buffer(p0)->map_t.v6.daddr = ip6_map_t_embedded_address(d0, &ip60->dst_address);
- vnet_buffer(p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0;
-
- if (PREDICT_FALSE(ip6_parse(ip60, p0->current_length,
- &(vnet_buffer(p0)->map_t.v6.l4_protocol),
- &(vnet_buffer(p0)->map_t.v6.l4_offset),
- &(vnet_buffer(p0)->map_t.v6.frag_offset)))) {
- error0 = MAP_ERROR_MALFORMED;
- next0 = IP6_MAPT_NEXT_DROP;
- }
-
- src_port0 = -1;
- l4_len0 = (u32)clib_net_to_host_u16(ip60->payload_length) +
- sizeof(*ip60) - vnet_buffer(p0)->map_t.v6.l4_offset;
- frag0 = (ip6_frag_hdr_t *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.frag_offset);
-
-
- if (PREDICT_FALSE(vnet_buffer(p0)->map_t.v6.frag_offset &&
- ip6_frag_hdr_offset(frag0))) {
- src_port0 = ip6_map_fragment_get(ip60, frag0, d0);
- error0 = (src_port0 != -1) ? error0 : MAP_ERROR_FRAGMENT_MEMORY;
- next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED;
- } else if (PREDICT_TRUE(vnet_buffer(p0)->map_t.v6.l4_protocol == IP_PROTOCOL_TCP)) {
- error0 = l4_len0 < sizeof(tcp_header_t) ? MAP_ERROR_MALFORMED : error0;
- vnet_buffer(p0)->map_t.checksum_offset = vnet_buffer(p0)->map_t.v6.l4_offset + 16;
- next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
- src_port0 = (i32) *((u16*)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset));
- } else if (PREDICT_TRUE(vnet_buffer(p0)->map_t.v6.l4_protocol == IP_PROTOCOL_UDP)) {
- error0 = l4_len0 < sizeof(udp_header_t) ? MAP_ERROR_MALFORMED : error0;
- vnet_buffer(p0)->map_t.checksum_offset = vnet_buffer(p0)->map_t.v6.l4_offset + 6;
- next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
- src_port0 = (i32) *((u16*)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset));
- } else if (vnet_buffer(p0)->map_t.v6.l4_protocol == IP_PROTOCOL_ICMP6) {
- error0 = l4_len0 < sizeof(icmp46_header_t) ? MAP_ERROR_MALFORMED : error0;
- next0 = IP6_MAPT_NEXT_MAPT_ICMP;
- if (((icmp46_header_t *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset))->code == ICMP6_echo_reply ||
- ((icmp46_header_t *) u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset))->code == ICMP6_echo_request)
- src_port0 = (i32) *((u16 *)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.l4_offset + 6));
- } else {
- //TODO: In case of 1:1 mapping, it might be possible to do something with those packets.
- error0 = MAP_ERROR_BAD_PROTOCOL;
- }
-
- //Security check
- if (PREDICT_FALSE((src_port0 != -1) && (
- ip60->src_address.as_u64[0] != map_get_pfx_net(d0, vnet_buffer(p0)->map_t.v6.saddr, src_port0) ||
- ip60->src_address.as_u64[1] != map_get_sfx_net(d0, vnet_buffer(p0)->map_t.v6.saddr, src_port0)))) {
- //Security check when src_port0 is not zero (non-first fragment, UDP or TCP)
- error0 = MAP_ERROR_SEC_CHECK;
- }
-
- //Fragmented first packet needs to be cached for following packets
- if (PREDICT_FALSE(vnet_buffer(p0)->map_t.v6.frag_offset &&
- !ip6_frag_hdr_offset((ip6_frag_hdr_t *)
- u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.frag_offset))) &&
- (src_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules) && (error0 == MAP_ERROR_NONE)) {
- ip6_map_fragment_cache(ip60,
- (ip6_frag_hdr_t *)u8_ptr_add(ip60, vnet_buffer(p0)->map_t.v6.frag_offset),
- d0, src_port0);
- }
-
- if (PREDICT_TRUE(error0 == MAP_ERROR_NONE && next0 != IP6_MAPT_NEXT_MAPT_ICMP)) {
- vlib_increment_combined_counter(cm + MAP_DOMAIN_COUNTER_RX, cpu_index,
- vnet_buffer(p0)->map_t.map_domain_index, 1,
- clib_net_to_host_u16(ip60->payload_length));
- }
-
- next0 = (error0 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next0;
- p0->error = error_node->errors[error0];
- vlib_validate_buffer_enqueue_x1(vm, node, next_index,
- to_next, n_left_to_next, pi0,
- next0);
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 pi0;
+ vlib_buffer_t *p0;
+ ip6_header_t *ip60;
+ u8 error0;
+ u32 l4_len0;
+ i32 src_port0;
+ map_domain_t *d0;
+ ip6_frag_hdr_t *frag0;
+ ip6_mapt_next_t next0 = 0;
+ u32 saddr;
+
+ pi0 = to_next[0] = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+ error0 = MAP_ERROR_NONE;
+
+ p0 = vlib_get_buffer (vm, pi0);
+ ip60 = vlib_buffer_get_current (p0);
+ //Save saddr in a different variable to not overwrite ip.adj_index
+ saddr = map_get_ip4 (&ip60->src_address);
+ d0 = ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
+ (ip4_address_t *) & saddr,
+ &vnet_buffer (p0)->map_t.map_domain_index,
+ &error0);
+
+ //FIXME: What if d0 is null
+ vnet_buffer (p0)->map_t.v6.saddr = saddr;
+ vnet_buffer (p0)->map_t.v6.daddr =
+ ip6_map_t_embedded_address (d0, &ip60->dst_address);
+ vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0;
+
+ if (PREDICT_FALSE (ip6_parse (ip60, p0->current_length,
+ &(vnet_buffer (p0)->map_t.
+ v6.l4_protocol),
+ &(vnet_buffer (p0)->map_t.
+ v6.l4_offset),
+ &(vnet_buffer (p0)->map_t.
+ v6.frag_offset))))
+ {
+ error0 = MAP_ERROR_MALFORMED;
+ next0 = IP6_MAPT_NEXT_DROP;
+ }
+
+ src_port0 = -1;
+ l4_len0 = (u32) clib_net_to_host_u16 (ip60->payload_length) +
+ sizeof (*ip60) - vnet_buffer (p0)->map_t.v6.l4_offset;
+ frag0 =
+ (ip6_frag_hdr_t *) u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.
+ v6.frag_offset);
+
+
+ if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset &&
+ ip6_frag_hdr_offset (frag0)))
+ {
+ src_port0 = ip6_map_fragment_get (ip60, frag0, d0);
+ error0 = (src_port0 != -1) ? error0 : MAP_ERROR_FRAGMENT_MEMORY;
+ next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED;
+ }
+ else
+ if (PREDICT_TRUE
+ (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_TCP))
+ {
+ error0 =
+ l4_len0 <
+ sizeof (tcp_header_t) ? MAP_ERROR_MALFORMED : error0;
+ vnet_buffer (p0)->map_t.checksum_offset =
+ vnet_buffer (p0)->map_t.v6.l4_offset + 16;
+ next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
+ src_port0 =
+ (i32) *
+ ((u16 *)
+ u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset));
+ }
+ else
+ if (PREDICT_TRUE
+ (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_UDP))
+ {
+ error0 =
+ l4_len0 <
+ sizeof (udp_header_t) ? MAP_ERROR_MALFORMED : error0;
+ vnet_buffer (p0)->map_t.checksum_offset =
+ vnet_buffer (p0)->map_t.v6.l4_offset + 6;
+ next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
+ src_port0 =
+ (i32) *
+ ((u16 *)
+ u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset));
+ }
+ else if (vnet_buffer (p0)->map_t.v6.l4_protocol ==
+ IP_PROTOCOL_ICMP6)
+ {
+ error0 =
+ l4_len0 <
+ sizeof (icmp46_header_t) ? MAP_ERROR_MALFORMED : error0;
+ next0 = IP6_MAPT_NEXT_MAPT_ICMP;
+ if (((icmp46_header_t *)
+ u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.v6.l4_offset))->code ==
+ ICMP6_echo_reply
+ || ((icmp46_header_t *)
+ u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.v6.
+ l4_offset))->code == ICMP6_echo_request)
+ src_port0 =
+ (i32) *
+ ((u16 *)
+ u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.v6.l4_offset + 6));
+ }
+ else
+ {
+ //TODO: In case of 1:1 mapping, it might be possible to do something with those packets.
+ error0 = MAP_ERROR_BAD_PROTOCOL;
+ }
+
+ //Security check
+ if (PREDICT_FALSE
+ ((src_port0 != -1)
+ && (ip60->src_address.as_u64[0] !=
+ map_get_pfx_net (d0, vnet_buffer (p0)->map_t.v6.saddr,
+ src_port0)
+ || ip60->src_address.as_u64[1] != map_get_sfx_net (d0,
+ vnet_buffer
+ (p0)->map_t.v6.saddr,
+ src_port0))))
+ {
+ //Security check when src_port0 is not zero (non-first fragment, UDP or TCP)
+ error0 = MAP_ERROR_SEC_CHECK;
+ }
+
+ //Fragmented first packet needs to be cached for following packets
+ if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset &&
+ !ip6_frag_hdr_offset ((ip6_frag_hdr_t *)
+ u8_ptr_add (ip60,
+ vnet_buffer
+ (p0)->map_t.
+ v6.frag_offset)))
+ && (src_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules)
+ && (error0 == MAP_ERROR_NONE))
+ {
+ ip6_map_fragment_cache (ip60,
+ (ip6_frag_hdr_t *) u8_ptr_add (ip60,
+ vnet_buffer
+ (p0)->map_t.
+ v6.frag_offset),
+ d0, src_port0);
+ }
+
+ if (PREDICT_TRUE
+ (error0 == MAP_ERROR_NONE && next0 != IP6_MAPT_NEXT_MAPT_ICMP))
+ {
+ vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX,
+ cpu_index,
+ vnet_buffer (p0)->
+ map_t.map_domain_index, 1,
+ clib_net_to_host_u16
+ (ip60->payload_length));
+ }
+
+ next0 = (error0 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next0;
+ p0->error = error_node->errors[error0];
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next, pi0,
+ next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- vlib_put_next_frame(vm, node, next_index, n_left_to_next);
- }
return frame->n_vectors;
}
static char *map_t_error_strings[] = {
#define _(sym,string) string,
- foreach_map_error
+ foreach_map_error
#undef _
};
+/* *INDENT-OFF* */
VLIB_REGISTER_NODE(ip6_map_t_fragmented_node) = {
.function = ip6_map_t_fragmented,
.name = "ip6-map-t-fragmented",
[IP6_MAPT_FRAGMENTED_NEXT_DROP] = "error-drop",
},
};
+/* *INDENT-ON* */
+/* *INDENT-OFF* */
VLIB_REGISTER_NODE(ip6_map_t_icmp_node) = {
.function = ip6_map_t_icmp,
.name = "ip6-map-t-icmp",
[IP6_MAPT_ICMP_NEXT_DROP] = "error-drop",
},
};
+/* *INDENT-ON* */
+/* *INDENT-OFF* */
VLIB_REGISTER_NODE(ip6_map_t_tcp_udp_node) = {
.function = ip6_map_t_tcp_udp,
.name = "ip6-map-t-tcp-udp",
[IP6_MAPT_TCP_UDP_NEXT_DROP] = "error-drop",
},
};
+/* *INDENT-ON* */
+/* *INDENT-OFF* */
VLIB_REGISTER_NODE(ip6_map_t_node) = {
.function = ip6_map_t,
.name = "ip6-map-t",
[IP6_MAPT_NEXT_DROP] = "error-drop",
},
};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff