_(wc_ip6_nd_events) \
_(wc_ip4_arp_events) \
_(ip6_ra_events) \
-_(dhcp6_pd_reply_events)
+_(dhcp6_pd_reply_events) \
+_(dhcp6_reply_events)
typedef struct
{
libvnet_la_SOURCES += \
vnet/dhcp/client.c \
vnet/dhcp/dhcp_client_detect.c \
+ vnet/dhcp/dhcp6_client_common_dp.c \
vnet/dhcp/dhcp6_pd_client_dp.c \
vnet/dhcp/dhcp6_pd_client_cp.c \
+ vnet/dhcp/dhcp6_ia_na_client_dp.c \
+ vnet/dhcp/dhcp6_ia_na_client_cp.c \
vnet/dhcp/dhcp_api.c
nobase_include_HEADERS += \
vnet/dhcp/client.h \
+ vnet/dhcp/dhcp6_client_common_dp.h \
vnet/dhcp/dhcp6_pd_client_dp.h \
+ vnet/dhcp/dhcp6_ia_na_client_dp.h \
vnet/dhcp/dhcp.api.h \
- vnet/dhcp/dhcp6_pd_client_cp.api.h
+ vnet/dhcp/dhcp6_pd_client_cp.api.h \
+ vnet/dhcp/dhcp6_ia_na_client_cp.api.h
API_FILES += \
vnet/dhcp/dhcp.api \
- vnet/dhcp/dhcp6_pd_client_cp.api
+ vnet/dhcp/dhcp6_pd_client_cp.api \
+ vnet/dhcp/dhcp6_ia_na_client_cp.api
########################################
# DHCP proxy
u8 enable;
};
+/** \brief Struct representing DHCPv6 address
+ @param address - address
+ @param valid_time - valid lifetime
+ @param preferred_time - preferred lifetime
+*/
+typeonly define dhcp6_address_info
+{
+ u8 address[16];
+ u32 valid_time;
+ u32 preferred_time;
+};
+
/** \brief Struct representing DHCPv6 PD prefix
@param prefix - prefix
@param prefix_length - prefix length
u32 preferred_time;
};
+/** \brief Send DHCPv6 client message of specified type
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param sw_if_index - index of TX interface, also identifies IAID
+ @param server_index - used to dentify DHCPv6 server,
+ unique for each DHCPv6 server on the link,
+ value obrtained from dhcp6_reply_event API message,
+ use ~0 to send message to all DHCPv6 servers
+ @param irt - initial retransmission time
+ @param mrt - maximum retransmission time
+ @param mrc - maximum retransmission count
+ @param mrd - maximum retransmission duration
+ for sending the message
+ @param stop - if non-zero then stop resending the message,
+ otherwise start sending the message
+ @param msg_type - message type
+ @param T1 - value of T1 in IA_NA option
+ @param T2 - value of T2 in IA_NA option
+ @param n_addresses - number of addresses in IA_NA option
+ @param addresses - list of addresses in IA_NA option
+*/
+autoreply define dhcp6_send_client_message
+{
+ u32 client_index;
+ u32 context;
+ u32 sw_if_index;
+ u32 server_index;
+ u32 irt;
+ u32 mrt;
+ u32 mrc;
+ u32 mrd;
+ u8 stop;
+ u8 msg_type;
+ u32 T1;
+ u32 T2;
+ u32 n_addresses;
+ vl_api_dhcp6_address_info_t addresses[n_addresses];
+};
+
/** \brief Send DHCPv6 PD client message of specified type
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
vl_api_dhcp6_pd_prefix_info_t prefixes[n_prefixes];
};
+service {
+ rpc want_dhcp6_reply_events returns want_dhcp6_reply_events_reply
+ events dhcp6_reply_event;
+};
+
service {
rpc want_dhcp6_pd_reply_events returns want_dhcp6_pd_reply_events_reply
events dhcp6_pd_reply_event;
};
+/** \brief Register for DHCPv6 reply events
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param enable_disable - 1 => register for events, 0 => cancel registration
+ @param pid - sender's pid
+*/
+autoreply define want_dhcp6_reply_events
+{
+ u32 client_index;
+ u32 context;
+ u8 enable_disable;
+ u32 pid;
+};
+
/** \brief Register for DHCPv6 PD reply events
@param client_index - opaque cookie to identify the sender
@param context - sender context, to match reply w/ request
u32 pid;
};
+/** \brief Tell client about a DHCPv6 server reply event
+ @param client_index - opaque cookie to identify the sender
+ @param pid - client pid registered to receive notification
+ @param sw_if_index - index of RX interface, also identifies IAID
+ @param server_index - used to dentify DHCPv6 server,
+ unique for each DHCPv6 server on the link
+ @param msg_type - message type
+ @param T1 - value of T1 in IA_NA option
+ @param T2 - value of T2 in IA_NA option
+ @param inner_status_code - value of status code inside IA_NA option
+ @param status_code - value of status code
+ @param preference - value of preference option in reply message
+ @param n_addresses - number of addresses in IA_NA option
+ @param addresses - list of addresses in IA_NA option
+*/
+define dhcp6_reply_event
+{
+ u32 client_index;
+ u32 pid;
+ u32 sw_if_index;
+ u32 server_index;
+ u8 msg_type;
+ u32 T1;
+ u32 T2;
+ u16 inner_status_code;
+ u16 status_code;
+ u8 preference;
+ u32 n_addresses;
+ vl_api_dhcp6_address_info_t addresses[n_addresses];
+};
+
/** \brief Tell client about a DHCPv6 PD server reply event
@param client_index - opaque cookie to identify the sender
@param pid - client pid registered to receive notification
--- /dev/null
+/*
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/dhcp/dhcp6_client_common_dp.h>
+#include <vnet/dhcp/dhcp6_ia_na_client_dp.h>
+#include <vnet/dhcp/dhcp6_pd_client_dp.h>
+#include <vnet/dhcp/dhcp6_packet.h>
+#include <vnet/udp/udp.h>
+
+dhcp6_client_common_main_t dhcp6_client_common_main;
+dhcpv6_duid_ll_string_t client_duid;
+
+u32
+server_index_get_or_create (u8 * data, u16 len)
+{
+ dhcp6_client_common_main_t *ccm = &dhcp6_client_common_main;
+ u32 i;
+ server_id_t *se;
+ server_id_t new_se;
+
+ for (i = 0; i < vec_len (ccm->server_ids); i++)
+ {
+ se = &ccm->server_ids[i];
+ if (se->len == len && 0 == memcmp (se->data, data, len))
+ return i;
+ }
+
+ new_se.len = len;
+ new_se.data = 0;
+ vec_validate (new_se.data, len - 1);
+ memcpy (new_se.data, data, len);
+
+ vec_add1 (ccm->server_ids, new_se);
+
+ return vec_len (ccm->server_ids) - 1;
+}
+
+void
+vl_api_dhcp6_duid_ll_set_t_handler (vl_api_dhcp6_duid_ll_set_t * mp)
+{
+ vl_api_dhcp6_duid_ll_set_reply_t *rmp;
+ dhcpv6_duid_ll_string_t *duid;
+ int rv = 0;
+
+ duid = (dhcpv6_duid_ll_string_t *) mp->duid_ll;
+ if (duid->duid_type != htonl (DHCPV6_DUID_LL))
+ {
+ rv = VNET_API_ERROR_INVALID_VALUE;
+ goto reply;
+ }
+ clib_memcpy (&client_duid, &duid, sizeof (client_duid));
+
+reply:
+ REPLY_MACRO (VL_API_DHCP6_DUID_LL_SET_REPLY);
+}
+
+static void
+generate_client_duid (void)
+{
+ client_duid.duid_type = htons (DHCPV6_DUID_LL);
+ client_duid.hardware_type = htons (1);
+
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_interface_main_t *im = &vnm->interface_main;
+ vnet_hw_interface_t *hi;
+ ethernet_interface_t *eth_if = 0;
+
+ /* *INDENT-OFF* */
+ pool_foreach (hi, im->hw_interfaces,
+ ({
+ eth_if = ethernet_get_interface (ðernet_main, hi->hw_if_index);
+ if (eth_if)
+ break;
+ }));
+ /* *INDENT-ON* */
+
+ if (eth_if)
+ clib_memcpy (client_duid.lla, eth_if->address, 6);
+ else
+ {
+ clib_warning ("Failed to find any Ethernet interface, "
+ "setting DHCPv6 DUID link-layer address to random value");
+ u32 seed = random_default_seed ();
+ random_u32 (&seed);
+ client_duid.lla[0] = 0xc2; /* locally administered unicast */
+ client_duid.lla[1] = 0x18;
+ client_duid.lla[2] = 0x44;
+ client_duid.lla[3] = random_u32 (&seed);
+ client_duid.lla[4] = random_u32 (&seed);
+ client_duid.lla[5] = random_u32 (&seed);
+ }
+}
+
+#define foreach_dhcpv6_client \
+ _(DROP, "error-drop") \
+ _(LOOKUP, "ip6-lookup")
+
+typedef enum
+{
+#define _(sym,str) DHCPV6_CLIENT_NEXT_##sym,
+ foreach_dhcpv6_client
+#undef _
+ DHCPV6_CLIENT_N_NEXT,
+} dhcpv6_client_next_t;
+
+/**
+ * per-packet trace data
+ */
+typedef struct dhcpv6_client_trace_t_
+{
+} dhcpv6_client_trace_t;
+
+static u8 *
+format_dhcpv6_client_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ //dhcpv6_client_trace_t *t = va_arg (*args, dhcpv6_client_trace_t *);
+
+ s = format (s, "nothing");
+
+ return s;
+}
+
+static uword
+dhcpv6_client_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ dhcp6_ia_na_client_main_t *icm = &dhcp6_ia_na_client_main;
+ dhcp6_pd_client_main_t *pcm = &dhcp6_pd_client_main;
+
+ dhcpv6_client_next_t next_index;
+ u32 n_left_from, *from, *to_next;
+ next_index = 0;
+ n_left_from = frame->n_vectors;
+ from = vlib_frame_vector_args (frame);
+
+ 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)
+ {
+ ip6_header_t *ip0;
+ u32 options_length;
+ dhcpv6_header_t *dhcpv60;
+ dhcpv6_option_t *option;
+ vlib_buffer_t *b0;
+ dhcp6_report_common_t report;
+ dhcp6_address_info_t *addresses = 0;
+ dhcp6_prefix_info_t *prefixes = 0;
+ u32 next0 = DHCPV6_CLIENT_NEXT_DROP;
+ u32 bi0;
+ u32 xid;
+ u32 sw_if_index;
+ u32 iaid;
+ u8 client_id_present = 0;
+ u8 discard = 0;
+ u8 is_pd_packet = 0;
+
+ dhcp6_ia_na_client_state_t *ia_na_client_state = NULL;
+ dhcp6_pd_client_state_t *pd_client_state = NULL;
+
+ 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);
+
+ dhcpv60 = vlib_buffer_get_current (b0);
+ ip0 = (void *) (b0->data + vnet_buffer (b0)->l3_hdr_offset);
+ u32 dhcpv6_ip6_palyoad_offset =
+ (u8 *) dhcpv60 - ((u8 *) ip0 + sizeof (*ip0));
+ options_length =
+ ntohs (ip0->payload_length) - dhcpv6_ip6_palyoad_offset -
+ sizeof (*dhcpv60);
+
+ memset (&report, 0, sizeof (report));
+
+ sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ if (sw_if_index >= vec_len (icm->client_state_by_sw_if_index))
+ ia_na_client_state = 0;
+ else
+ ia_na_client_state =
+ &icm->client_state_by_sw_if_index[sw_if_index];
+ if (sw_if_index >= vec_len (pcm->client_state_by_sw_if_index))
+ pd_client_state = 0;
+ else
+ pd_client_state = &pcm->client_state_by_sw_if_index[sw_if_index];
+
+ xid =
+ (dhcpv60->xid[0] << 16) + (dhcpv60->xid[1] << 8) +
+ dhcpv60->xid[2];
+ if (ia_na_client_state && ia_na_client_state->transaction_id == xid)
+ is_pd_packet = 0;
+ else if (pd_client_state && pd_client_state->transaction_id == xid)
+ is_pd_packet = 1;
+ else
+ {
+ clib_warning
+ ("Received DHCPv6 message with wrong Transaction ID");
+ discard = 1;
+ }
+
+ report.sw_if_index = sw_if_index;
+ report.msg_type = dhcpv60->msg_type;
+ report.server_index = ~0;
+
+ switch (dhcpv60->msg_type)
+ {
+ case DHCPV6_MSG_ADVERTISE:
+ case DHCPV6_MSG_REPLY:
+ option = (dhcpv6_option_t *) (dhcpv60 + 1);
+ while (options_length > 0)
+ {
+ if (options_length <
+ ntohs (option->length) + sizeof (*option))
+ {
+ clib_warning
+ ("remaining payload length < option length (%d < %d)",
+ options_length,
+ ntohs (option->length) + sizeof (*option));
+ break;
+ }
+ u16 oo = ntohs (option->option);
+ if (oo == DHCPV6_OPTION_IA_NA || oo == DHCPV6_OPTION_IA_PD)
+ {
+ u8 discard_option = 0;
+ dhcpv6_ia_header_t *ia_header = (void *) option;
+ iaid = ntohl (ia_header->iaid);
+ u32 T1 = ntohl (ia_header->t1);
+ u32 T2 = ntohl (ia_header->t2);
+ if (iaid != DHCPV6_CLIENT_IAID)
+ discard_option = 1;
+ if (T1 != 0 && T2 != 0 && T1 > T2)
+ discard_option = 1;
+ if (!discard_option)
+ {
+ report.T1 = T1;
+ report.T2 = T2;
+ }
+ dhcpv6_option_t *inner_option =
+ (void *) ia_header->data;
+ u16 inner_options_length =
+ ntohs (option->length) - (sizeof (*ia_header) -
+ sizeof (dhcpv6_option_t));
+ while (inner_options_length > 0)
+ {
+ u16 inner_oo = ntohs (inner_option->option);
+ if (discard_option)
+ ;
+ else if (inner_oo == DHCPV6_OPTION_IAADDR)
+ {
+ dhcpv6_ia_opt_addr_t *iaaddr =
+ (void *) inner_option;
+ u32 n_addresses = vec_len (addresses);
+ vec_validate (addresses, n_addresses);
+ dhcp6_address_info_t *address_info =
+ &addresses[n_addresses];
+ address_info->preferred_time =
+ ntohl (iaaddr->preferred);
+ address_info->valid_time =
+ ntohl (iaaddr->valid);
+ address_info->address = iaaddr->addr;
+ }
+ else if (inner_oo == DHCPV6_OPTION_IAPREFIX)
+ {
+ dhcpv6_ia_opt_pd_t *iaprefix =
+ (void *) inner_option;
+ u32 n_prefixes = vec_len (prefixes);
+ vec_validate (prefixes, n_prefixes);
+ dhcp6_prefix_info_t *prefix_info =
+ &prefixes[n_prefixes];
+ prefix_info->preferred_time =
+ ntohl (iaprefix->preferred);
+ prefix_info->valid_time =
+ ntohl (iaprefix->valid);
+ prefix_info->prefix_length = iaprefix->prefix;
+ prefix_info->prefix = iaprefix->addr;
+ }
+ else if (inner_oo == DHCPV6_OPTION_STATUS_CODE)
+ {
+ dhcpv6_status_code_t *sc =
+ (void *) inner_option;
+ report.inner_status_code =
+ ntohs (sc->status_code);
+ }
+ inner_options_length -=
+ sizeof (*inner_option) +
+ ntohs (inner_option->length);
+ inner_option =
+ (void *) ((u8 *) inner_option +
+ sizeof (*inner_option) +
+ ntohs (inner_option->length));
+ }
+ }
+ else if (oo == DHCPV6_OPTION_CLIENTID)
+ {
+ if (client_id_present)
+ {
+ clib_warning
+ ("Duplicate Client ID in received DHVPv6 message");
+ discard = 1;
+ }
+ else
+ {
+ u16 len = ntohs (option->length);
+ client_id_present = 1;
+ if (len != CLIENT_DUID_LENGTH ||
+ 0 != memcmp (option->data,
+ client_duid.bin_string,
+ CLIENT_DUID_LENGTH))
+ {
+ clib_warning
+ ("Unrecognized client DUID inside received DHVPv6 message");
+ discard = 1;
+ }
+ }
+ }
+ else if (oo == DHCPV6_OPTION_SERVERID)
+ {
+ if (report.server_index != ~0)
+ {
+ clib_warning
+ ("Duplicate Server ID in received DHVPv6 message");
+ discard = 1;
+ }
+ else
+ {
+ u16 ol = ntohs (option->length);
+ if (ol - 2 /* 2 byte DUID type code */ > 128)
+ {
+ clib_warning
+ ("Server DUID (without type code) is longer than 128 octets");
+ discard = 1;
+ }
+ else
+ {
+ report.server_index =
+ server_index_get_or_create (option->data, ol);
+ }
+ }
+ }
+ else if (oo == DHCPV6_OPTION_PREFERENCE)
+ {
+ report.preference = option->data[0];
+ }
+ else if (oo == DHCPV6_OPTION_STATUS_CODE)
+ {
+ dhcpv6_status_code_t *sc = (void *) option;
+ report.status_code = ntohs (sc->status_code);
+ }
+ options_length -= sizeof (*option) + ntohs (option->length);
+ option =
+ (void *) ((u8 *) option + sizeof (*option) +
+ ntohs (option->length));
+ }
+
+ if (!client_id_present)
+ {
+ clib_warning
+ ("Missing Client ID in received DHVPv6 message");
+ discard = 1;
+ }
+ if (report.server_index == ~0)
+ {
+ clib_warning
+ ("Missing Server ID in received DHVPv6 message");
+ discard = 1;
+ }
+
+ if (!discard)
+ {
+ if (!is_pd_packet)
+ {
+ address_report_t r;
+ r.body = report;
+ r.n_addresses = vec_len (addresses);
+ r.addresses = addresses;
+ dhcp6_publish_report (&r);
+ }
+ else
+ {
+ prefix_report_t r;
+ r.body = report;
+ r.n_prefixes = vec_len (prefixes);
+ r.prefixes = prefixes;
+ dhcp6_pd_publish_report (&r);
+ }
+ }
+ vec_free (addresses);
+ vec_free (prefixes);
+
+ break;
+ default:
+ break;
+ }
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ dhcpv6_client_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ }
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ 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);
+ }
+
+ return frame->n_vectors;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dhcpv6_client_node, static) = {
+ .function = dhcpv6_client_node_fn,
+ .name = "dhcpv6-client",
+ .vector_size = sizeof (u32),
+
+ .n_errors = 0,
+
+ .n_next_nodes = DHCPV6_CLIENT_N_NEXT,
+ .next_nodes = {
+ #define _(s,n) [DHCPV6_CLIENT_NEXT_##s] = n,
+ foreach_dhcpv6_client
+ #undef _
+ },
+
+ .format_trace = format_dhcpv6_client_trace,
+};
+/* *INDENT-ON* */
+
+void
+dhcp6_clients_enable_disable (u8 enable)
+{
+ vlib_main_t *vm = vlib_get_main ();
+
+ if (enable)
+ {
+ if (client_duid.duid_type == 0)
+ generate_client_duid ();
+ udp_register_dst_port (vm, UDP_DST_PORT_dhcpv6_to_client,
+ dhcpv6_client_node.index, 0 /* is_ip6 */ );
+ }
+ else
+ udp_unregister_dst_port (vm, UDP_DST_PORT_dhcpv6_to_client,
+ 0 /* is_ip6 */ );
+}
+
+void
+ vl_api_dhcp6_clients_enable_disable_t_handler
+ (vl_api_dhcp6_clients_enable_disable_t * mp)
+{
+ vl_api_dhcp6_clients_enable_disable_reply_t *rmp;
+ int rv = 0;
+
+ dhcp6_clients_enable_disable (mp->enable);
+
+ REPLY_MACRO (VL_API_DHCP6_CLIENTS_ENABLE_DISABLE_REPLY);
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef included_vnet_dhcp6_client_common_dp_h
+#define included_vnet_dhcp6_client_common_dp_h
+
+#include <vlib/vlib.h>
+#include <vnet/dhcp/dhcp6_client_common_dp.h>
+#include <vnet/dhcp/dhcp6_packet.h>
+#include <vnet/vnet_msg_enum.h>
+#include <vlibapi/api_common.h>
+#include <vlibmemory/api.h>
+
+#define vl_typedefs /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <vnet/vnet_all_api_h.h>
+#undef vl_printfun
+
+#include <vlibapi/api_helper_macros.h>
+
+typedef struct
+{
+ u32 sw_if_index;
+ u32 server_index;
+ u8 msg_type;
+ u32 T1;
+ u32 T2;
+ u16 inner_status_code;
+ u16 status_code;
+ u8 preference;
+} dhcp6_report_common_t;
+
+typedef struct
+{
+ u8 *data;
+ u16 len;
+} server_id_t;
+
+typedef struct
+{
+ server_id_t *server_ids;
+} dhcp6_client_common_main_t;
+
+extern dhcp6_client_common_main_t dhcp6_client_common_main;
+
+typedef union
+{
+ CLIB_PACKED (struct
+ {
+ u16 duid_type;
+ u16 hardware_type;
+ u8 lla[6];
+ });
+ char bin_string[10];
+} dhcpv6_duid_ll_string_t;
+
+extern dhcpv6_duid_ll_string_t client_duid;
+#define CLIENT_DUID_LENGTH sizeof (client_duid)
+#define DHCPV6_CLIENT_IAID 1
+
+void dhcp6_clients_enable_disable (u8 enable);
+u32 server_index_get_or_create (u8 * data, u16 len);
+
+#define vl_typedefs /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+void vl_api_dhcp6_duid_ll_set_t_handler (vl_api_dhcp6_duid_ll_set_t * mp);
+
+static_always_inline f64
+random_f64_from_to (f64 from, f64 to)
+{
+ static u32 seed = 0;
+ static u8 seed_set = 0;
+ if (!seed_set)
+ {
+ seed = random_default_seed ();
+ seed_set = 1;
+ }
+ return random_f64 (&seed) * (to - from) + from;
+}
+
+static const ip6_address_t all_dhcp6_relay_agents_and_servers = {
+ .as_u8 = {
+ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02}
+};
+
+#endif /* included_vnet_dhcp6_client_common_dp_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+option version = "1.0.0";
+
+/** \brief Enable/disable DHCPv6 client on interface
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param sw_if_index - interface to enable/disable client on
+ @param enable - 1 to enable, 0 to disable
+*/
+autoreply define dhcp6_client_enable_disable
+{
+ u32 client_index;
+ u32 context;
+ u32 sw_if_index;
+ u8 enable;
+};
+
+/*
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/vnet.h>
+#include <vlibmemory/api.h>
+#include <vnet/vnet_msg_enum.h>
+#include <vnet/dhcp/dhcp6_packet.h>
+#include <vnet/dhcp/dhcp6_ia_na_client_dp.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ip/ip6.h>
+#include <float.h>
+#include <math.h>
+
+#define vl_typedefs /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_endianfun
+
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_dhcp6_client_cp_msg \
+_(DHCP6_CLIENT_ENABLE_DISABLE, dhcp6_client_enable_disable)
+
+#define vl_api_dhcp6_client_enable_disable_t_print vl_noop_handler
+
+typedef struct
+{
+ u32 sw_if_index;
+ ip6_address_t address;
+ u32 preferred_lt;
+ u32 valid_lt;
+ f64 due_time;
+} address_info_t;
+
+typedef struct
+{
+ u8 enabled;
+ u32 server_index;
+ u32 T1;
+ u32 T2;
+ f64 T1_due_time;
+ f64 T2_due_time;
+ u32 address_count;
+ u8 rebinding;
+} client_state_t;
+
+typedef struct
+{
+ address_info_t *address_pool;
+ client_state_t *client_state_by_sw_if_index;
+ u32 n_clients;
+ f64 max_valid_due_time;
+
+ /* convenience */
+ vlib_main_t *vlib_main;
+ vnet_main_t *vnet_main;
+ api_main_t *api_main;
+ u32 node_index;
+} dhcp6_client_cp_main_t;
+
+static dhcp6_client_cp_main_t dhcp6_client_cp_main;
+
+enum
+{
+ RD_CP_EVENT_INTERRUPT,
+ RD_CP_EVENT_DISABLE,
+};
+
+static void
+send_client_message_start_stop (u32 sw_if_index, u32 server_index,
+ u8 msg_type, address_info_t * address_list,
+ u8 start)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ dhcp6_send_client_message_params_t params = { 0, };
+ dhcp6_send_client_message_params_address_t *addresses = 0, *addr;
+ u32 i;
+
+ ASSERT (sw_if_index < vec_len (rm->client_state_by_sw_if_index) &&
+ rm->client_state_by_sw_if_index[sw_if_index].enabled);
+ client_state_t *client_state =
+ &rm->client_state_by_sw_if_index[sw_if_index];
+
+ params.sw_if_index = sw_if_index;
+ params.server_index = server_index;
+ params.msg_type = msg_type;
+ if (start)
+ {
+ if (msg_type == DHCPV6_MSG_SOLICIT)
+ {
+ params.irt = 1;
+ params.mrt = 120;
+ }
+ else if (msg_type == DHCPV6_MSG_REQUEST)
+ {
+ params.irt = 1;
+ params.mrt = 30;
+ params.mrc = 10;
+ }
+ else if (msg_type == DHCPV6_MSG_RENEW)
+ {
+ params.irt = 10;
+ params.mrt = 600;
+ f64 current_time = vlib_time_now (rm->vlib_main);
+ i32 diff_time = client_state->T2 - current_time;
+ if (diff_time < 0)
+ diff_time = 0;
+ params.mrd = diff_time;
+ }
+ else if (msg_type == DHCPV6_MSG_REBIND)
+ {
+ params.irt = 10;
+ params.mrt = 600;
+ f64 current_time = vlib_time_now (rm->vlib_main);
+ i32 diff_time = rm->max_valid_due_time - current_time;
+ if (diff_time < 0)
+ diff_time = 0;
+ params.mrd = diff_time;
+ }
+ else if (msg_type == DHCPV6_MSG_RELEASE)
+ {
+ params.mrc = 1;
+ }
+ }
+
+ params.T1 = 0;
+ params.T2 = 0;
+ if (vec_len (address_list) != 0)
+ vec_validate (addresses, vec_len (address_list) - 1);
+ for (i = 0; i < vec_len (address_list); i++)
+ {
+ address_info_t *address = &address_list[i];
+ addr = &addresses[i];
+ addr->valid_lt = address->valid_lt;
+ addr->preferred_lt = address->preferred_lt;
+ addr->address = address->address;
+ }
+ params.addresses = addresses;
+
+ dhcp6_send_client_message (rm->vlib_main, sw_if_index, !start, ¶ms);
+
+ vec_free (params.addresses);
+}
+
+static void interrupt_process (void);
+
+static u32
+ip6_enable (u32 sw_if_index)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ clib_error_t *rv;
+
+ rv = enable_ip6_interface (rm->vlib_main, sw_if_index);
+
+ return rv != 0;
+}
+
+static u8
+ip6_addresses_equal (ip6_address_t * address1, ip6_address_t * address2)
+{
+ if (address1->as_u64[0] != address2->as_u64[0])
+ return 0;
+ return address1->as_u64[1] == address2->as_u64[1];
+}
+
+static clib_error_t *
+dhcp6_reply_event_handler (vl_api_dhcp6_reply_event_t * mp)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vlib_main_t *vm = rm->vlib_main;
+ client_state_t *client_state;
+ ip6_address_t *address;
+ u32 sw_if_index;
+ u32 n_addresses;
+ vl_api_dhcp6_address_info_t *api_address;
+ u32 inner_status_code;
+ u32 status_code;
+ u32 server_index;
+ f64 current_time;
+ clib_error_t *error = 0;
+ u32 i;
+
+ current_time = vlib_time_now (vm);
+
+ sw_if_index = ntohl (mp->sw_if_index);
+
+ if (sw_if_index >= vec_len (rm->client_state_by_sw_if_index))
+ return 0;
+
+ client_state = &rm->client_state_by_sw_if_index[sw_if_index];
+
+ if (!client_state->enabled)
+ return 0;
+
+ server_index = ntohl (mp->server_index);
+
+ n_addresses = ntohl (mp->n_addresses);
+
+ inner_status_code = ntohs (mp->inner_status_code);
+ status_code = ntohs (mp->status_code);
+
+ if (mp->msg_type == DHCPV6_MSG_ADVERTISE
+ && client_state->server_index == ~0)
+ {
+ address_info_t *address_list = 0, *address_info;
+
+ if (inner_status_code == DHCPV6_STATUS_NOADDRS_AVAIL)
+ {
+ clib_warning
+ ("Advertise message arrived with NoAddrsAvail status code");
+ return 0;
+ }
+
+ if (n_addresses > 0)
+ vec_validate (address_list, n_addresses - 1);
+ for (i = 0; i < n_addresses; i++)
+ {
+ api_address = &mp->addresses[i];
+ address = (ip6_address_t *) api_address->address;
+
+ address_info = &address_list[i];
+ address_info->address = *address;
+ address_info->preferred_lt = 0;
+ address_info->valid_lt = 0;
+ }
+
+ client_state->server_index = server_index;
+
+ send_client_message_start_stop (sw_if_index, server_index,
+ DHCPV6_MSG_REQUEST, address_list, 1);
+ vec_free (address_list);
+ }
+
+ if (mp->msg_type != DHCPV6_MSG_REPLY)
+ return 0;
+
+ if (!client_state->rebinding && client_state->server_index != server_index)
+ {
+ clib_warning ("Reply message arrived with Server ID different "
+ "from that in Request or Renew message");
+ return 0;
+ }
+
+ if (inner_status_code == DHCPV6_STATUS_NOADDRS_AVAIL)
+ {
+ clib_warning ("Reply message arrived with NoAddrsAvail status code");
+ if (n_addresses > 0)
+ {
+ clib_warning
+ ("Invalid Reply message arrived: It contains NoAddrsAvail "
+ "status code but also contains addresses");
+ return 0;
+ }
+ }
+
+ if (status_code == DHCPV6_STATUS_UNSPEC_FAIL)
+ {
+ clib_warning ("Reply message arrived with UnspecFail status code");
+ return 0;
+ }
+
+ send_client_message_start_stop (sw_if_index, server_index,
+ mp->msg_type, 0, 0);
+
+ for (i = 0; i < n_addresses; i++)
+ {
+ address_info_t *address_info = 0;
+ u32 valid_time;
+ u32 preferred_time;
+
+ api_address = &mp->addresses[i];
+
+ address = (ip6_address_t *) api_address->address;
+
+ if (ip6_address_is_link_local_unicast (address))
+ continue;
+
+ valid_time = ntohl (api_address->valid_time);
+ preferred_time = ntohl (api_address->preferred_time);
+
+ if (preferred_time > valid_time)
+ continue;
+
+ u8 address_already_present = 0;
+ /* *INDENT-OFF* */
+ pool_foreach (address_info, rm->address_pool,
+ ({
+ if (address_info->sw_if_index != sw_if_index)
+ ;
+ else if (!ip6_addresses_equal (&address_info->address, address))
+ ;
+ else
+ {
+ address_already_present = 1;
+ goto address_pool_foreach_out;
+ }
+ }));
+ /* *INDENT-ON* */
+ address_pool_foreach_out:
+
+ if (address_already_present)
+ {
+ address_info->preferred_lt = preferred_time;
+ address_info->valid_lt = valid_time;
+ address_info->due_time = current_time + valid_time;
+ if (address_info->due_time > rm->max_valid_due_time)
+ rm->max_valid_due_time = address_info->due_time;
+ continue;
+ }
+
+ if (valid_time == 0)
+ continue;
+
+ pool_get (rm->address_pool, address_info);
+ address_info->sw_if_index = sw_if_index;
+ address_info->address = *address;
+ address_info->preferred_lt = preferred_time;
+ address_info->valid_lt = valid_time;
+ address_info->due_time = current_time + valid_time;
+ if (address_info->due_time > rm->max_valid_due_time)
+ rm->max_valid_due_time = address_info->due_time;
+ rm->client_state_by_sw_if_index[sw_if_index].address_count++;
+
+ error = ip6_add_del_interface_address (vm, sw_if_index,
+ &address_info->address, 64, 0);
+ if (error)
+ clib_warning ("Failed to add interface address");
+ }
+
+ client_state->server_index = server_index;
+ client_state->T1 = ntohl (mp->T1);
+ client_state->T2 = ntohl (mp->T2);
+ if (client_state->T1 != 0)
+ client_state->T1_due_time = current_time + client_state->T1;
+ if (client_state->T2 != 0)
+ client_state->T2_due_time = current_time + client_state->T2;
+ client_state->rebinding = 0;
+
+ interrupt_process ();
+
+ return error;
+}
+
+static address_info_t *
+create_address_list (u32 sw_if_index)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ address_info_t *address_info, *address_list = 0;;
+
+ /* *INDENT-OFF* */
+ pool_foreach (address_info, rm->address_pool,
+ ({
+ if (address_info->sw_if_index == sw_if_index)
+ {
+ u32 pos = vec_len (address_list);
+ vec_validate (address_list, pos);
+ clib_memcpy (&address_list[pos], address_info, sizeof (*address_info));
+ }
+ }));
+ /* *INDENT-ON* */
+
+ return address_list;
+}
+
+VNET_DHCP6_REPLY_EVENT_FUNCTION (dhcp6_reply_event_handler);
+
+static uword
+dhcp6_client_cp_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
+ vlib_frame_t * f)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ address_info_t *address_info;
+ client_state_t *client_state;
+ f64 sleep_time = 1e9;
+ clib_error_t *error;
+ f64 current_time;
+ f64 due_time;
+ uword event_type;
+ uword *event_data = 0;
+ int i;
+
+ while (1)
+ {
+ vlib_process_wait_for_event_or_clock (vm, sleep_time);
+ event_type = vlib_process_get_events (vm, &event_data);
+ vec_reset_length (event_data);
+
+ if (event_type == RD_CP_EVENT_DISABLE)
+ {
+ vlib_node_set_state (vm, rm->node_index, VLIB_NODE_STATE_DISABLED);
+ sleep_time = 1e9;
+ continue;
+ }
+
+ current_time = vlib_time_now (vm);
+ do
+ {
+ due_time = current_time + 1e9;
+ /* *INDENT-OFF* */
+ pool_foreach (address_info, rm->address_pool,
+ ({
+ if (address_info->due_time > current_time)
+ {
+ if (address_info->due_time < due_time)
+ due_time = address_info->due_time;
+ }
+ else
+ {
+ u32 sw_if_index = address_info->sw_if_index;
+ error = ip6_add_del_interface_address (vm, sw_if_index,
+ &address_info->address,
+ 64, 1);
+ if (error)
+ clib_warning ("Failed to delete interface address");
+ pool_put (rm->address_pool, address_info);
+ /* make sure ip6 stays enabled */
+ ip6_enable (sw_if_index);
+ client_state = &rm->client_state_by_sw_if_index[sw_if_index];
+ if (--client_state->address_count == 0)
+ {
+ client_state->rebinding = 0;
+ client_state->server_index = ~0;
+ send_client_message_start_stop (sw_if_index, ~0,
+ DHCPV6_MSG_SOLICIT,
+ 0, 1);
+ }
+ }
+ }));
+ /* *INDENT-ON* */
+ for (i = 0; i < vec_len (rm->client_state_by_sw_if_index); i++)
+ {
+ client_state_t *cs = &rm->client_state_by_sw_if_index[i];
+ if (cs->enabled && cs->server_index != ~0)
+ {
+ if (cs->T2_due_time > current_time)
+ {
+ if (cs->T2_due_time < due_time)
+ due_time = cs->T2_due_time;
+ if (cs->T1_due_time > current_time)
+ {
+ if (cs->T1_due_time < due_time)
+ due_time = cs->T1_due_time;
+ }
+ else
+ {
+ cs->T1_due_time = DBL_MAX;
+ address_info_t *address_list;
+ address_list = create_address_list (i);
+ cs->rebinding = 1;
+ send_client_message_start_stop (i, cs->server_index,
+ DHCPV6_MSG_RENEW,
+ address_list, 1);
+ vec_free (address_list);
+ }
+ }
+ else
+ {
+ cs->T2_due_time = DBL_MAX;
+ address_info_t *address_list;
+ address_list = create_address_list (i);
+ cs->rebinding = 1;
+ send_client_message_start_stop (i, ~0,
+ DHCPV6_MSG_REBIND,
+ address_list, 1);
+ vec_free (address_list);
+ }
+ }
+ }
+ current_time = vlib_time_now (vm);
+ }
+ while (due_time < current_time);
+
+ sleep_time = due_time - current_time;
+ }
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dhcp6_client_cp_process_node) = {
+ .function = dhcp6_client_cp_process,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .name = "dhcp6-client-cp-process",
+};
+/* *INDENT-ON* */
+
+static void
+interrupt_process (void)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vlib_main_t *vm = rm->vlib_main;
+
+ vlib_process_signal_event (vm, dhcp6_client_cp_process_node.index,
+ RD_CP_EVENT_INTERRUPT, 0);
+}
+
+static void
+disable_process (void)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vlib_main_t *vm = rm->vlib_main;
+
+ vlib_process_signal_event (vm, dhcp6_client_cp_process_node.index,
+ RD_CP_EVENT_DISABLE, 0);
+}
+
+static void
+enable_process (void)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vlib_main_t *vm = rm->vlib_main;
+ vlib_node_t *node;
+
+ node = vec_elt (vm->node_main.nodes, rm->node_index);
+
+ vlib_node_set_state (vm, rm->node_index, VLIB_NODE_STATE_POLLING);
+ vlib_start_process (vm, node->runtime_index);
+}
+
+static clib_error_t *
+dhcp6_addresses_show_command_function (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ dhcp6_client_cp_main_t *dm = &dhcp6_client_cp_main;
+ clib_error_t *error = 0;
+ address_info_t *address_info;
+ f64 current_time = vlib_time_now (vm);
+
+ /* *INDENT-OFF* */
+ pool_foreach (address_info, dm->address_pool,
+ ({
+ vlib_cli_output (vm, "address: %U, "
+ "preferred lifetime: %u, valid lifetime: %u "
+ "(%f remaining)",
+ format_ip6_address, &address_info->address,
+ address_info->preferred_lt, address_info->valid_lt,
+ address_info->due_time - current_time);
+ }));
+ /* *INDENT-ON* */
+
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (dhcp6_addresses_show_command, static) = {
+ .path = "show dhcp6 addresses",
+ .short_help = "show dhcp6 addresses",
+ .function = dhcp6_addresses_show_command_function,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+dhcp6_clients_show_command_function (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ clib_error_t *error = 0;
+ client_state_t *cs;
+ f64 current_time = vlib_time_now (vm);
+ char buf1[256];
+ char buf2[256];
+ const char *rebinding;
+ u32 i;
+
+ for (i = 0; i < vec_len (rm->client_state_by_sw_if_index); i++)
+ {
+ cs = &rm->client_state_by_sw_if_index[i];
+ if (cs->enabled)
+ {
+ if (cs->T1_due_time != DBL_MAX && cs->T1_due_time > current_time)
+ {
+ sprintf (buf1, "%u remaining",
+ (u32) round (cs->T1_due_time - current_time));
+ }
+ else
+ sprintf (buf1, "timeout");
+ if (cs->T2_due_time != DBL_MAX && cs->T2_due_time > current_time)
+ sprintf (buf2, "%u remaining",
+ (u32) round (cs->T2_due_time - current_time));
+ else
+ sprintf (buf2, "timeout");
+ if (cs->rebinding)
+ rebinding = ", REBINDING";
+ else
+ rebinding = "";
+ if (cs->T1)
+ vlib_cli_output (vm,
+ "sw_if_index: %u, T1: %u (%s), "
+ "T2: %u (%s), server index: %d%s", i,
+ cs->T1, buf1, cs->T2, buf2,
+ cs->server_index, rebinding);
+ else
+ vlib_cli_output (vm, "sw_if_index: %u%s", i, rebinding);
+ }
+ }
+
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (dhcp6_clients_show_command, static) = {
+ .path = "show dhcp6 clients",
+ .short_help = "show dhcp6 clients",
+ .function = dhcp6_clients_show_command_function,
+};
+/* *INDENT-ON* */
+
+static int
+dhcp6_client_enable_disable (u32 sw_if_index, u8 enable)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vnet_main_t *vnm = rm->vnet_main;
+ vlib_main_t *vm = rm->vlib_main;
+ client_state_t *client_state;
+ client_state_t empty_config = { 0 };
+ address_info_t *address_info;
+ clib_error_t *error;
+
+ if (!vnet_sw_interface_is_api_valid (vnm, sw_if_index))
+ {
+ clib_warning ("Invalid sw_if_index");
+ return 1;
+ }
+
+ vec_validate_init_empty (rm->client_state_by_sw_if_index, sw_if_index,
+ empty_config);
+ client_state = &rm->client_state_by_sw_if_index[sw_if_index];
+
+ u8 old_enabled = client_state->enabled;
+ if (enable)
+ client_state->enabled = 1;
+ client_state->server_index = ~0;
+
+ if (!old_enabled && enable)
+ {
+ rm->n_clients++;
+ if (rm->n_clients == 1)
+ {
+ enable_process ();
+ dhcp6_clients_enable_disable (1);
+ }
+
+ ip6_enable (sw_if_index);
+ send_client_message_start_stop (sw_if_index, ~0, DHCPV6_MSG_SOLICIT,
+ 0, 1);
+ }
+ else if (old_enabled && !enable)
+ {
+ send_client_message_start_stop (sw_if_index, ~0, ~0, 0, 0);
+
+ rm->n_clients--;
+ if (rm->n_clients == 0)
+ {
+ dhcp6_clients_enable_disable (0);
+ disable_process ();
+ }
+
+ /* *INDENT-OFF* */
+ pool_foreach (address_info, rm->address_pool,
+ ({
+ if (address_info->sw_if_index == sw_if_index)
+ {
+ ASSERT (sw_if_index < vec_len (rm->client_state_by_sw_if_index) &&
+ rm->client_state_by_sw_if_index[sw_if_index].enabled);
+ client_state_t *client_state =
+ &rm->client_state_by_sw_if_index[sw_if_index];
+ send_client_message_start_stop (sw_if_index,
+ client_state->server_index,
+ DHCPV6_MSG_RELEASE, address_info,
+ 1);
+ error = ip6_add_del_interface_address (vm, sw_if_index,
+ &address_info->address,
+ 64, 1);
+ if (error)
+ clib_warning ("Failed to delete interface address");
+ pool_put (rm->address_pool, address_info);
+ }
+ }));
+ /* *INDENT-ON* */
+ }
+
+ if (!enable)
+ client_state->enabled = 0;
+
+ return 0;
+}
+
+static clib_error_t *
+dhcp6_client_enable_disable_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ vnet_main_t *vnm = rm->vnet_main;
+ clib_error_t *error = 0;
+ u32 sw_if_index = ~0;
+ u8 enable = 1;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat
+ (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
+ ;
+ else if (unformat (input, "disable"))
+ enable = 0;
+ else
+ {
+ error = clib_error_return (0, "unexpected input `%U'",
+ format_unformat_error, input);
+ goto done;
+ }
+ }
+
+ if (sw_if_index != ~0)
+ {
+ if (dhcp6_client_enable_disable (sw_if_index, enable) != 0)
+ error = clib_error_return (0, "Invalid sw_if_index");
+ }
+ else
+ error = clib_error_return (0, "Missing sw_if_index");
+
+done:
+ return error;
+}
+
+/*?
+ * This command is used to enable/disable DHCPv6 client
+ * on particular interface.
+ *
+ * @cliexpar
+ * @parblock
+ * Example of how to enable DHCPv6 client:
+ * @cliexcmd{dhcp6 client GigabitEthernet2/0/0}
+ * Example of how to disable DHCPv6 client:
+ * @cliexcmd{dhcp6 client GigabitEthernet2/0/0 disable}
+ * @endparblock
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (dhcp6_client_enable_disable_command, static) = {
+ .path = "dhcp6 client",
+ .short_help = "dhcp6 client <interface> [disable]",
+ .function = dhcp6_client_enable_disable_command_fn,
+};
+/* *INDENT-ON* */
+
+static void
+ vl_api_dhcp6_client_enable_disable_t_handler
+ (vl_api_dhcp6_client_enable_disable_t * mp)
+{
+ vl_api_dhcp6_client_enable_disable_reply_t *rmp;
+ u32 sw_if_index;
+ int rv = 0;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ sw_if_index = ntohl (mp->sw_if_index);
+
+ rv = dhcp6_client_enable_disable (sw_if_index, mp->enable);
+
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_SW_INTERFACE_SET_TABLE_REPLY);
+}
+
+#define vl_msg_name_crc_list
+#include <vnet/dhcp/dhcp6_ia_na_client_cp.api.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (api_main_t * am)
+{
+#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
+ foreach_vl_msg_name_crc_dhcp6_ia_na_client_cp;
+#undef _
+}
+
+static clib_error_t *
+dhcp_client_cp_init (vlib_main_t * vm)
+{
+ dhcp6_client_cp_main_t *rm = &dhcp6_client_cp_main;
+ api_main_t *am = &api_main;
+
+ rm->vlib_main = vm;
+ rm->vnet_main = vnet_get_main ();
+ rm->api_main = am;
+ rm->node_index = dhcp6_client_cp_process_node.index;
+
+#define _(N,n) \
+ vl_msg_api_set_handlers(VL_API_##N, #n, \
+ vl_api_##n##_t_handler, \
+ vl_noop_handler, \
+ vl_api_##n##_t_endian, \
+ vl_api_##n##_t_print, \
+ sizeof(vl_api_##n##_t), 0/* do NOT trace! */);
+ foreach_dhcp6_client_cp_msg;
+#undef _
+
+ /*
+ * Set up the (msg_name, crc, message-id) table
+ */
+ setup_message_id_table (am);
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (dhcp_client_cp_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vlib/vlib.h>
+#include <vnet/dhcp/dhcp6_packet.h>
+#include <vnet/dhcp/dhcp_proxy.h>
+#include <vnet/mfib/mfib_table.h>
+#include <vnet/mfib/ip6_mfib.h>
+#include <vnet/fib/fib.h>
+#include <vnet/adj/adj_mcast.h>
+#include <vnet/ip/ip6_neighbor.h>
+#include <vlibapi/api_common.h>
+#include <vlibmemory/api.h>
+#include <vnet/dhcp/dhcp6_ia_na_client_dp.h>
+#include <vnet/dhcp/dhcp6_client_common_dp.h>
+
+#include <vnet/vnet_msg_enum.h>
+
+#define vl_typedefs /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <vnet/vnet_all_api_h.h>
+#undef vl_printfun
+
+#include <vlibapi/api_helper_macros.h>
+
+dhcp6_ia_na_client_main_t dhcp6_ia_na_client_main;
+dhcp6_ia_na_client_public_main_t dhcp6_ia_na_client_public_main;
+
+static void
+signal_report (address_report_t * r)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ dhcp6_ia_na_client_main_t *cm = &dhcp6_ia_na_client_main;
+ uword ni = cm->publisher_node;
+ uword et = cm->publisher_et;
+
+ if (ni == (uword) ~ 0)
+ return;
+ address_report_t *q =
+ vlib_process_signal_event_data (vm, ni, et, 1, sizeof *q);
+
+ *q = *r;
+}
+
+int
+dhcp6_publish_report (address_report_t * r)
+{
+ void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
+ vl_api_rpc_call_main_thread (signal_report, (u8 *) r, sizeof *r);
+ return 0;
+}
+
+void
+dhcp6_set_publisher_node (uword node_index, uword event_type)
+{
+ dhcp6_ia_na_client_main_t *cm = &dhcp6_ia_na_client_main;
+ cm->publisher_node = node_index;
+ cm->publisher_et = event_type;
+}
+
+static void
+stop_sending_client_message (vlib_main_t * vm,
+ dhcp6_ia_na_client_state_t * client_state)
+{
+ u32 bi0;
+
+ client_state->keep_sending_client_message = 0;
+ vec_free (client_state->params.addresses);
+ if (client_state->buffer)
+ {
+ bi0 = vlib_get_buffer_index (vm, client_state->buffer);
+ vlib_buffer_free (vm, &bi0, 1);
+ client_state->buffer = 0;
+ adj_unlock (client_state->adj_index);
+ client_state->adj_index = ~0;
+ }
+}
+
+static vlib_buffer_t *
+create_buffer_for_client_message (vlib_main_t * vm, u32 sw_if_index,
+ dhcp6_ia_na_client_state_t * client_state,
+ u32 type)
+{
+ dhcp6_client_common_main_t *ccm = &dhcp6_client_common_main;
+ vnet_main_t *vnm = vnet_get_main ();
+
+ vlib_buffer_t *b;
+ u32 bi;
+ ip6_header_t *ip;
+ udp_header_t *udp;
+ dhcpv6_header_t *dhcp;
+ ip6_address_t src_addr;
+ u32 dhcp_opt_len = 0;
+ client_state->transaction_start = vlib_time_now (vm);
+ u32 n_addresses;
+ u32 i;
+
+ vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
+ vnet_sw_interface_t *sup_sw = vnet_get_sup_sw_interface (vnm, sw_if_index);
+ vnet_sw_interface_t *sw = vnet_get_sw_interface (vnm, sw_if_index);
+
+ /* Interface(s) down? */
+ if ((hw->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) == 0)
+ return NULL;
+ if ((sup_sw->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) == 0)
+ return NULL;
+ if ((sw->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) == 0)
+ return NULL;
+
+ /* Get a link-local address */
+ src_addr = ip6_neighbor_get_link_local_address (sw_if_index);
+
+ if (src_addr.as_u8[0] != 0xfe)
+ {
+ clib_warning ("Could not find source address to send DHCPv6 packet");
+ return NULL;
+ }
+
+ if (vlib_buffer_alloc (vm, &bi, 1) != 1)
+ {
+ clib_warning ("Buffer allocation failed");
+ return NULL;
+ }
+
+ b = vlib_get_buffer (vm, bi);
+ vnet_buffer (b)->sw_if_index[VLIB_RX] = sw_if_index;
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index;
+ client_state->adj_index = adj_mcast_add_or_lock (FIB_PROTOCOL_IP6,
+ VNET_LINK_IP6,
+ sw_if_index);
+ vnet_buffer (b)->ip.adj_index[VLIB_TX] = client_state->adj_index;
+ b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
+
+ ip = (ip6_header_t *) vlib_buffer_get_current (b);
+ udp = (udp_header_t *) (ip + 1);
+ dhcp = (dhcpv6_header_t *) (udp + 1);
+
+ ip->src_address = src_addr;
+ ip->hop_limit = 255;
+ ip->ip_version_traffic_class_and_flow_label =
+ clib_host_to_net_u32 (0x6 << 28);
+ ip->payload_length = 0;
+ ip->protocol = IP_PROTOCOL_UDP;
+
+ udp->src_port = clib_host_to_net_u16 (DHCPV6_CLIENT_PORT);
+ udp->dst_port = clib_host_to_net_u16 (DHCPV6_SERVER_PORT);
+ udp->checksum = 0;
+ udp->length = 0;
+
+ dhcp->msg_type = type;
+ dhcp->xid[0] = (client_state->transaction_id & 0x00ff0000) >> 16;
+ dhcp->xid[1] = (client_state->transaction_id & 0x0000ff00) >> 8;
+ dhcp->xid[2] = (client_state->transaction_id & 0x000000ff) >> 0;
+
+ void *d = (void *) dhcp->data;
+ dhcpv6_option_t *duid;
+ dhcpv6_elapsed_t *elapsed;
+ dhcpv6_ia_header_t *ia_hdr;
+ dhcpv6_ia_opt_addr_t *opt_addr;
+ if (type == DHCPV6_MSG_SOLICIT || type == DHCPV6_MSG_REQUEST ||
+ type == DHCPV6_MSG_RENEW || type == DHCPV6_MSG_REBIND ||
+ type == DHCPV6_MSG_RELEASE)
+ {
+ duid = (dhcpv6_option_t *) d;
+ duid->option = clib_host_to_net_u16 (DHCPV6_OPTION_CLIENTID);
+ duid->length = clib_host_to_net_u16 (CLIENT_DUID_LENGTH);
+ clib_memcpy (duid + 1, client_duid.bin_string, CLIENT_DUID_LENGTH);
+ d += sizeof (*duid) + CLIENT_DUID_LENGTH;
+
+ if (client_state->params.server_index != ~0)
+ {
+ server_id_t *se =
+ &ccm->server_ids[client_state->params.server_index];
+
+ duid = (dhcpv6_option_t *) d;
+ duid->option = clib_host_to_net_u16 (DHCPV6_OPTION_SERVERID);
+ duid->length = clib_host_to_net_u16 (se->len);
+ clib_memcpy (duid + 1, se->data, se->len);
+ d += sizeof (*duid) + se->len;
+ }
+
+ elapsed = (dhcpv6_elapsed_t *) d;
+ elapsed->opt.option = clib_host_to_net_u16 (DHCPV6_OPTION_ELAPSED_TIME);
+ elapsed->opt.length =
+ clib_host_to_net_u16 (sizeof (*elapsed) - sizeof (elapsed->opt));
+ elapsed->elapsed_10ms = 0;
+ client_state->elapsed_pos =
+ (char *) &elapsed->elapsed_10ms -
+ (char *) vlib_buffer_get_current (b);
+ d += sizeof (*elapsed);
+
+ ia_hdr = (dhcpv6_ia_header_t *) d;
+ ia_hdr->opt.option = clib_host_to_net_u16 (DHCPV6_OPTION_IA_NA);
+ ia_hdr->iaid = clib_host_to_net_u32 (DHCPV6_CLIENT_IAID);
+ ia_hdr->t1 = clib_host_to_net_u32 (client_state->params.T1);
+ ia_hdr->t2 = clib_host_to_net_u32 (client_state->params.T2);
+ d += sizeof (*ia_hdr);
+
+ n_addresses = vec_len (client_state->params.addresses);
+
+ ia_hdr->opt.length =
+ clib_host_to_net_u16 (sizeof (*ia_hdr) +
+ n_addresses * sizeof (*opt_addr) -
+ sizeof (ia_hdr->opt));
+
+ for (i = 0; i < n_addresses; i++)
+ {
+ dhcp6_send_client_message_params_address_t *addr =
+ &client_state->params.addresses[i];
+ opt_addr = (dhcpv6_ia_opt_addr_t *) d;
+ opt_addr->opt.option = clib_host_to_net_u16 (DHCPV6_OPTION_IAADDR);
+ opt_addr->opt.length =
+ clib_host_to_net_u16 (sizeof (*opt_addr) -
+ sizeof (opt_addr->opt));
+ opt_addr->addr = addr->address;
+ opt_addr->valid = clib_host_to_net_u32 (addr->valid_lt);
+ opt_addr->preferred = clib_host_to_net_u32 (addr->preferred_lt);
+ d += sizeof (*opt_addr);
+ }
+ }
+ else
+ {
+ clib_warning ("State not implemented");
+ }
+
+ dhcp_opt_len = ((u8 *) d) - dhcp->data;
+ udp->length =
+ clib_host_to_net_u16 (sizeof (*udp) + sizeof (*dhcp) + dhcp_opt_len);
+ ip->payload_length = udp->length;
+ b->current_length =
+ sizeof (*ip) + sizeof (*udp) + sizeof (*dhcp) + dhcp_opt_len;
+
+ ip->dst_address = all_dhcp6_relay_agents_and_servers;
+
+ return b;
+}
+
+static inline u8
+check_send_client_message (vlib_main_t * vm,
+ dhcp6_ia_na_client_state_t * client_state,
+ f64 current_time, f64 * due_time)
+{
+ vlib_buffer_t *p0;
+ vlib_frame_t *f;
+ u32 *to_next;
+ u32 next_index;
+ vlib_buffer_t *c0;
+ ip6_header_t *ip;
+ udp_header_t *udp;
+ u32 ci0;
+ int bogus_length = 0;
+
+ dhcp6_send_client_message_params_t *params;
+
+ f64 now = vlib_time_now (vm);
+
+ if (!client_state->keep_sending_client_message)
+ return false;
+
+ params = &client_state->params;
+
+ if (client_state->due_time > current_time)
+ {
+ *due_time = client_state->due_time;
+ return true;
+ }
+
+ p0 = client_state->buffer;
+
+ next_index = ip6_rewrite_mcast_node.index;
+
+ c0 = vlib_buffer_copy (vm, p0);
+ ci0 = vlib_get_buffer_index (vm, c0);
+
+ ip = (ip6_header_t *) vlib_buffer_get_current (c0);
+ udp = (udp_header_t *) (ip + 1);
+
+ u16 *elapsed_field = (u16 *) ((void *) ip + client_state->elapsed_pos);
+ *elapsed_field =
+ clib_host_to_net_u16 ((u16)
+ ((now - client_state->transaction_start) * 100));
+
+ udp->checksum = 0;
+ udp->checksum =
+ ip6_tcp_udp_icmp_compute_checksum (vm, 0, ip, &bogus_length);
+
+ f = vlib_get_frame_to_node (vm, next_index);
+ to_next = vlib_frame_vector_args (f);
+ to_next[0] = ci0;
+ f->n_vectors = 1;
+ vlib_put_frame_to_node (vm, next_index, f);
+
+ if (params->mrc != 0 && --client_state->n_left == 0)
+ stop_sending_client_message (vm, client_state);
+ else
+ {
+ client_state->sleep_interval =
+ (2 + random_f64_from_to (-0.1, 0.1)) * client_state->sleep_interval;
+ if (client_state->sleep_interval > params->mrt)
+ client_state->sleep_interval =
+ (1 + random_f64_from_to (-0.1, 0.1)) * params->mrt;
+
+ client_state->due_time = current_time + client_state->sleep_interval;
+
+ if (params->mrd != 0
+ && current_time > client_state->start_time + params->mrd)
+ stop_sending_client_message (vm, client_state);
+ else
+ *due_time = client_state->due_time;
+ }
+
+ return client_state->keep_sending_client_message;
+}
+
+static uword
+send_dhcp6_client_message_process (vlib_main_t * vm,
+ vlib_node_runtime_t * rt,
+ vlib_frame_t * f0)
+{
+ dhcp6_ia_na_client_main_t *cm = &dhcp6_ia_na_client_main;
+ dhcp6_ia_na_client_state_t *client_state;
+ uword *event_data = 0;
+ f64 sleep_time = 1e9;
+ f64 current_time;
+ f64 due_time;
+ f64 dt = 0;
+ int i;
+
+ while (true)
+ {
+ vlib_process_wait_for_event_or_clock (vm, sleep_time);
+ vlib_process_get_events (vm, &event_data);
+ vec_reset_length (event_data);
+
+ current_time = vlib_time_now (vm);
+ do
+ {
+ due_time = current_time + 1e9;
+ for (i = 0; i < vec_len (cm->client_state_by_sw_if_index); i++)
+ {
+ client_state = &cm->client_state_by_sw_if_index[i];
+ if (!client_state->entry_valid)
+ continue;
+ if (check_send_client_message
+ (vm, client_state, current_time, &dt) && (dt < due_time))
+ due_time = dt;
+ }
+ current_time = vlib_time_now (vm);
+ }
+ while (due_time < current_time);
+
+ sleep_time = due_time - current_time;
+ }
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (send_dhcp6_client_message_process_node, static) = {
+ .function = send_dhcp6_client_message_process,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .name = "send-dhcp6-client-message-process",
+};
+/* *INDENT-ON* */
+
+void
+dhcp6_send_client_message (vlib_main_t * vm, u32 sw_if_index, u8 stop,
+ dhcp6_send_client_message_params_t * params)
+{
+ dhcp6_ia_na_client_main_t *cm = &dhcp6_ia_na_client_main;
+ dhcp6_ia_na_client_state_t *client_state = 0;
+ dhcp6_ia_na_client_state_t empty_state = { 0, };
+
+ ASSERT (~0 != sw_if_index);
+
+ vec_validate_init_empty (cm->client_state_by_sw_if_index, sw_if_index,
+ empty_state);
+ client_state = &cm->client_state_by_sw_if_index[sw_if_index];
+ if (!client_state->entry_valid)
+ {
+ client_state->entry_valid = 1;
+ client_state->adj_index = ~0;
+ }
+
+ stop_sending_client_message (vm, client_state);
+
+ if (!stop)
+ {
+ client_state->keep_sending_client_message = 1;
+ vec_free (client_state->params.addresses);
+ client_state->params = *params;
+ client_state->params.addresses = vec_dup (params->addresses);
+ client_state->n_left = params->mrc;
+ client_state->start_time = vlib_time_now (vm);
+ client_state->sleep_interval =
+ (1 + random_f64_from_to (-0.1, 0.1)) * params->irt;
+ client_state->due_time = 0; /* send first packet ASAP */
+ client_state->transaction_id = random_u32 (&cm->seed) & 0x00ffffff;
+ client_state->buffer =
+ create_buffer_for_client_message (vm, sw_if_index, client_state,
+ params->msg_type);
+ if (!client_state->buffer)
+ client_state->keep_sending_client_message = 0;
+ else
+ vlib_process_signal_event (vm,
+ send_dhcp6_client_message_process_node.index,
+ 1, 0);
+ }
+}
+
+void
+ vl_api_dhcp6_send_client_message_t_handler
+ (vl_api_dhcp6_send_client_message_t * mp)
+{
+ vl_api_dhcp6_send_client_message_reply_t *rmp;
+ dhcp6_send_client_message_params_t params;
+ vlib_main_t *vm = vlib_get_main ();
+ u32 n_addresses;
+ u32 i;
+ int rv = 0;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ BAD_SW_IF_INDEX_LABEL;
+ REPLY_MACRO (VL_API_DHCP6_SEND_CLIENT_MESSAGE_REPLY);
+
+ if (rv != 0)
+ return;
+
+ params.sw_if_index = ntohl (mp->sw_if_index);
+ params.server_index = ntohl (mp->server_index);
+ params.irt = ntohl (mp->irt);
+ params.mrt = ntohl (mp->mrt);
+ params.mrc = ntohl (mp->mrc);
+ params.mrd = ntohl (mp->mrd);
+ params.msg_type = mp->msg_type;
+ params.T1 = ntohl (mp->T1);
+ params.T2 = ntohl (mp->T2);
+ n_addresses = ntohl (mp->n_addresses);
+ params.addresses = 0;
+ if (n_addresses > 0)
+ vec_validate (params.addresses, n_addresses - 1);
+ for (i = 0; i < n_addresses; i++)
+ {
+ vl_api_dhcp6_address_info_t *ai = &mp->addresses[i];
+ dhcp6_send_client_message_params_address_t *addr = ¶ms.addresses[i];
+ addr->preferred_lt = ntohl (ai->preferred_time);
+ addr->valid_lt = ntohl (ai->valid_time);
+ memcpy (addr->address.as_u8, ai->address, 16);
+ }
+
+ dhcp6_send_client_message (vm, ntohl (mp->sw_if_index), mp->stop, ¶ms);
+}
+
+clib_error_t *
+call_dhcp6_reply_event_callbacks (void *data,
+ _vnet_dhcp6_reply_event_function_list_elt_t
+ * elt)
+{
+ clib_error_t *error = 0;
+
+ while (elt)
+ {
+ error = elt->fp (data);
+ if (error)
+ return error;
+ elt = elt->next_dhcp6_reply_event_function;
+ }
+
+ return error;
+}
+
+static uword
+dhcp6_reply_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
+ vlib_frame_t * f)
+{
+ /* These cross the longjmp boundry (vlib_process_wait_for_event)
+ * and need to be volatile - to prevent them from being optimized into
+ * a register - which could change during suspension */
+
+ while (1)
+ {
+ vlib_process_wait_for_event (vm);
+ uword event_type = DHCP6_DP_REPLY_REPORT;
+ void *event_data = vlib_process_get_event_data (vm, &event_type);
+
+ int i;
+ if (event_type == DHCP6_DP_REPLY_REPORT)
+ {
+ address_report_t *events = event_data;
+ for (i = 0; i < vec_len (events); i++)
+ {
+ u32 event_size =
+ sizeof (vl_api_dhcp6_reply_event_t) +
+ vec_len (events[i].addresses) *
+ sizeof (vl_api_dhcp6_address_info_t);
+ vl_api_dhcp6_reply_event_t *event = clib_mem_alloc (event_size);
+ memset (event, 0, event_size);
+
+ event->sw_if_index = htonl (events[i].body.sw_if_index);
+ event->server_index = htonl (events[i].body.server_index);
+ event->msg_type = events[i].body.msg_type;
+ event->T1 = htonl (events[i].body.T1);
+ event->T2 = htonl (events[i].body.T2);
+ event->inner_status_code =
+ htons (events[i].body.inner_status_code);
+ event->status_code = htons (events[i].body.status_code);
+ event->preference = events[i].body.preference;
+
+ event->n_addresses = htonl (vec_len (events[i].addresses));
+ vl_api_dhcp6_address_info_t *address =
+ (typeof (address)) event->addresses;
+ u32 j;
+ for (j = 0; j < vec_len (events[i].addresses); j++)
+ {
+ dhcp6_address_info_t *info = &events[i].addresses[j];
+ memcpy (address->address, &info->address, 16);
+ address->valid_time = htonl (info->valid_time);
+ address->preferred_time = htonl (info->preferred_time);
+ address++;
+ }
+
+ dhcp6_ia_na_client_public_main_t *dcpm =
+ &dhcp6_ia_na_client_public_main;
+ call_dhcp6_reply_event_callbacks (event, dcpm->functions);
+
+ vpe_client_registration_t *reg;
+ /* *INDENT-OFF* */
+ pool_foreach(reg, vpe_api_main.dhcp6_reply_events_registrations,
+ ({
+ vl_api_registration_t *vl_reg;
+ vl_reg =
+ vl_api_client_index_to_registration (reg->client_index);
+ if (vl_reg && vl_api_can_send_msg (vl_reg))
+ {
+ vl_api_dhcp6_reply_event_t *msg =
+ vl_msg_api_alloc (event_size);
+ clib_memcpy (msg, event, event_size);
+ msg->_vl_msg_id = htons (VL_API_DHCP6_REPLY_EVENT);
+ msg->client_index = reg->client_index;
+ msg->pid = reg->client_pid;
+ vl_api_send_msg (vl_reg, (u8 *) msg);
+ }
+ }));
+ /* *INDENT-ON* */
+
+ clib_mem_free (event);
+ }
+ }
+ vlib_process_put_event_data (vm, event_data);
+ }
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dhcp6_reply_process_node) = {
+ .function = dhcp6_reply_process,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .name = "dhcp6-reply-publisher-process",
+};
+/* *INDENT-ON* */
+
+void
+ vl_api_want_dhcp6_reply_events_t_handler
+ (vl_api_want_dhcp6_reply_events_t * mp)
+{
+ vpe_api_main_t *am = &vpe_api_main;
+ vl_api_want_dhcp6_reply_events_reply_t *rmp;
+ int rv = 0;
+
+ uword *p =
+ hash_get (am->dhcp6_reply_events_registration_hash, mp->client_index);
+ vpe_client_registration_t *rp;
+ if (p)
+ {
+ if (mp->enable_disable)
+ {
+ clib_warning ("pid %d: already enabled...", ntohl (mp->pid));
+ rv = VNET_API_ERROR_INVALID_REGISTRATION;
+ goto reply;
+ }
+ else
+ {
+ rp = pool_elt_at_index (am->dhcp6_reply_events_registrations, p[0]);
+ pool_put (am->dhcp6_reply_events_registrations, rp);
+ hash_unset (am->dhcp6_reply_events_registration_hash,
+ mp->client_index);
+ if (pool_elts (am->dhcp6_reply_events_registrations) == 0)
+ dhcp6_set_publisher_node (~0, DHCP6_DP_REPORT_MAX);
+ goto reply;
+ }
+ }
+ if (mp->enable_disable == 0)
+ {
+ clib_warning ("pid %d: already disabled...", ntohl (mp->pid));
+ rv = VNET_API_ERROR_INVALID_REGISTRATION;
+ goto reply;
+ }
+ pool_get (am->dhcp6_reply_events_registrations, rp);
+ rp->client_index = mp->client_index;
+ rp->client_pid = ntohl (mp->pid);
+ hash_set (am->dhcp6_reply_events_registration_hash, rp->client_index,
+ rp - am->dhcp6_reply_events_registrations);
+ dhcp6_set_publisher_node (dhcp6_reply_process_node.index,
+ DHCP6_DP_REPLY_REPORT);
+
+reply:
+ REPLY_MACRO (VL_API_WANT_DHCP6_REPLY_EVENTS_REPLY);
+}
+
+static clib_error_t *
+dhcp6_client_init (vlib_main_t * vm)
+{
+ dhcp6_ia_na_client_main_t *cm = &dhcp6_ia_na_client_main;
+
+ cm->vlib_main = vm;
+ cm->vnet_main = vnet_get_main ();
+
+ cm->publisher_node = ~0;
+
+ cm->seed = 0xdeaccabe;
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (dhcp6_client_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef included_vnet_dhcp6_client_dp_h
+#define included_vnet_dhcp6_client_dp_h
+
+#include <vlib/vlib.h>
+#include <vnet/dhcp/dhcp6_client_common_dp.h>
+
+typedef struct
+{
+ u32 preferred_lt;
+ u32 valid_lt;
+ ip6_address_t address;
+} dhcp6_send_client_message_params_address_t;
+
+typedef struct
+{
+ u32 sw_if_index;
+ u32 server_index;
+ u32 irt;
+ u32 mrt;
+ u32 mrc;
+ u32 mrd;
+ u8 msg_type;
+ u32 T1;
+ u32 T2;
+ dhcp6_send_client_message_params_address_t *addresses;
+} dhcp6_send_client_message_params_t;
+
+typedef struct
+{
+ u8 entry_valid;
+ u8 keep_sending_client_message; /* when true then next fields are valid */
+ dhcp6_send_client_message_params_t params;
+ f64 transaction_start;
+ f64 sleep_interval;
+ f64 due_time;
+ u32 n_left;
+ f64 start_time;
+ u32 transaction_id;
+ vlib_buffer_t *buffer;
+ u32 elapsed_pos;
+ u32 adj_index;
+} dhcp6_ia_na_client_state_t;
+
+typedef struct
+{
+ dhcp6_ia_na_client_state_t *client_state_by_sw_if_index;
+
+ uword publisher_node;
+ uword publisher_et;
+
+ u32 seed;
+
+ /* convenience */
+ vlib_main_t *vlib_main;
+ vnet_main_t *vnet_main;
+} dhcp6_ia_na_client_main_t;
+
+extern dhcp6_ia_na_client_main_t dhcp6_ia_na_client_main;
+
+typedef struct
+{
+ ip6_address_t address;
+ u32 valid_time;
+ u32 preferred_time;
+ u16 status_code;
+} dhcp6_address_info_t;
+
+typedef struct
+{
+ dhcp6_report_common_t body;
+ u32 n_addresses;
+ dhcp6_address_info_t *addresses;
+} address_report_t;
+
+#define vl_typedefs /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+void dhcp6_send_client_message (vlib_main_t * vm, u32 sw_if_index, u8 stop,
+ dhcp6_send_client_message_params_t * params);
+void dhcp6_set_publisher_node (uword node_index, uword event_type);
+int dhcp6_publish_report (address_report_t * r);
+
+
+void
+ vl_api_want_dhcp6_reply_events_t_handler
+ (vl_api_want_dhcp6_reply_events_t * mp);
+void
+ vl_api_dhcp6_send_client_message_t_handler
+ (vl_api_dhcp6_send_client_message_t * mp);
+void
+ vl_api_dhcp6_clients_enable_disable_t_handler
+ (vl_api_dhcp6_clients_enable_disable_t * mp);
+
+extern vlib_node_registration_t dhcp6_reply_process_node;
+
+enum
+{ DHCP6_DP_REPLY_REPORT, DHCP6_DP_REPORT_MAX };
+
+typedef struct _vnet_dhcp6_reply_function_list_elt
+{
+ struct _vnet_dhcp6_reply_function_list_elt *next_dhcp6_reply_event_function;
+ clib_error_t *(*fp) (vl_api_dhcp6_reply_event_t * mp);
+} _vnet_dhcp6_reply_event_function_list_elt_t;
+
+typedef struct
+{
+ _vnet_dhcp6_reply_event_function_list_elt_t *functions;
+} dhcp6_ia_na_client_public_main_t;
+
+extern dhcp6_ia_na_client_public_main_t dhcp6_ia_na_client_public_main;
+
+#define VNET_DHCP6_REPLY_EVENT_FUNCTION(f) \
+ \
+static void __vnet_dhcp6_reply_event_function_init_##f (void) \
+ __attribute__((__constructor__)) ; \
+ \
+static void __vnet_dhcp6_reply_event_function_init_##f (void) \
+{ \
+ dhcp6_ia_na_client_public_main_t * nm = &dhcp6_ia_na_client_public_main; \
+ static _vnet_dhcp6_reply_event_function_list_elt_t init_function; \
+ init_function.next_dhcp6_reply_event_function = nm->functions; \
+ nm->functions = &init_function; \
+ init_function.fp = (void *) &f; \
+} \
+ \
+static void __vnet_dhcp6_reply_event_function_deinit_##f (void) \
+ __attribute__((__destructor__)) ; \
+ \
+static void __vnet_dhcp6_reply_event_function_deinit_##f (void) \
+{ \
+ dhcp6_ia_na_client_public_main_t * nm = &dhcp6_ia_na_client_public_main; \
+ _vnet_dhcp6_reply_event_function_list_elt_t *next; \
+ if (nm->functions->fp == (void *) &f) \
+ { \
+ nm->functions = \
+ nm->functions->next_dhcp6_reply_event_function; \
+ return; \
+ } \
+ next = nm->functions; \
+ while (next->next_dhcp6_reply_event_function) \
+ { \
+ if (next->next_dhcp6_reply_event_function->fp == (void *) &f) \
+ { \
+ next->next_dhcp6_reply_event_function = \
+ next->next_dhcp6_reply_event_function->next_dhcp6_reply_event_function; \
+ return; \
+ } \
+ next = next->next_dhcp6_reply_event_function; \
+ } \
+}
+
+#endif /* included_vnet_dhcp6_client_dp_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
ip6_address_t addr;
}) dhcpv6_ia_opt_pd_t;
+typedef CLIB_PACKED (struct
+ {
+ dhcpv6_option_t opt; ip6_address_t addr; u32 preferred;
+ u32 valid;
+ }) dhcpv6_ia_opt_addr_t;
+
typedef CLIB_PACKED (struct
{
dhcpv6_option_t opt;
{
u32 prefix_group_index;
uword opaque_data; // used by prefix publisher
- u32 TODO;
ip6_address_t prefix;
u8 prefix_length;
u32 preferred_lt;
if (!client_state->rebinding && client_state->server_index != server_index)
{
clib_warning ("Reply message arrived with Server ID different "
- "from that in Request of Renew message");
+ "from that in Request or Renew message");
return 0;
}
prefix_info->preferred_lt = preferred_time;
prefix_info->valid_lt = valid_time;
prefix_info->due_time = current_time + valid_time;
+ if (prefix_info->due_time > rm->max_valid_due_time)
+ rm->max_valid_due_time = prefix_info->due_time;
continue;
}
prefix_info->preferred_lt = preferred_time;
prefix_info->valid_lt = valid_time;
prefix_info->due_time = current_time + valid_time;
+ if (prefix_info->due_time > rm->max_valid_due_time)
+ rm->max_valid_due_time = prefix_info->due_time;
rm->client_state_by_sw_if_index[sw_if_index].prefix_count++;
u32 prefix_index = prefix_info - pm->prefix_pool;
#include <vlibapi/api_common.h>
#include <vlibmemory/api.h>
#include <vnet/dhcp/dhcp6_pd_client_dp.h>
+#include <vnet/dhcp/dhcp6_client_common_dp.h>
#include <vnet/vnet_msg_enum.h>
#include <vlibapi/api_helper_macros.h>
-typedef struct
-{
- u8 entry_valid;
- u8 keep_sending_client_message; /* when true then next fields are valid */
- dhcp6_pd_send_client_message_params_t params;
- f64 transaction_start;
- f64 sleep_interval;
- f64 due_time;
- u32 n_left;
- f64 start_time;
- u32 transaction_id;
- vlib_buffer_t *buffer;
- u32 elapsed_pos;
- u32 adj_index;
-} dhcp6_pd_client_state_t;
-
-typedef struct
-{
- u8 *data;
- u16 len;
-} server_id_t;
-
-typedef struct
-{
- dhcp6_pd_client_state_t *client_state_by_sw_if_index;
- server_id_t *server_ids;
-
- uword publisher_node;
- uword publisher_et;
-
- u32 seed;
-
- /* convenience */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
-} dhcp6_pd_client_main_t;
-
-static dhcp6_pd_client_main_t dhcp6_pd_client_main;
+dhcp6_pd_client_main_t dhcp6_pd_client_main;
dhcp6_pd_client_public_main_t dhcp6_pd_client_public_main;
-typedef struct
-{
- ip6_address_t prefix;
- u8 prefix_length;
- u32 valid_time;
- u32 preferred_time;
- u16 status_code;
-} prefix_info_t;
-
-typedef struct
-{
- u32 sw_if_index;
- u32 server_index;
- u8 msg_type;
- u32 T1;
- u32 T2;
- u16 inner_status_code;
- u16 status_code;
- u8 preference;
- u32 n_prefixes;
- prefix_info_t *prefixes;
-} report_t;
-
-typedef union
-{
- CLIB_PACKED (struct
- {
- u16 duid_type;
- u16 hardware_type;
- u8 lla[6];
- });
- char bin_string[10];
-} dhcpv6_duid_ll_string_t;
-
-static dhcpv6_duid_ll_string_t client_duid;
-#define CLIENT_DUID_LENGTH sizeof (client_duid)
-#define DHCPV6_CLIENT_IAID 1
-
static void
-signal_report (report_t * r)
+signal_report (prefix_report_t * r)
{
vlib_main_t *vm = vlib_get_main ();
dhcp6_pd_client_main_t *cm = &dhcp6_pd_client_main;
if (ni == (uword) ~ 0)
return;
- report_t *q = vlib_process_signal_event_data (vm, ni, et, 1, sizeof *q);
+ prefix_report_t *q =
+ vlib_process_signal_event_data (vm, ni, et, 1, sizeof *q);
*q = *r;
}
-static int
-publish_report (report_t * r)
+int
+dhcp6_pd_publish_report (prefix_report_t * r)
{
void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
vl_api_rpc_call_main_thread (signal_report, (u8 *) r, sizeof *r);
cm->publisher_et = event_type;
}
-#define foreach_dhcpv6_pd_client \
- _(DROP, "error-drop") \
- _(LOOKUP, "ip6-lookup")
-
-typedef enum
-{
-#define _(sym,str) DHCPV6_PD_CLIENT_NEXT_##sym,
- foreach_dhcpv6_pd_client
-#undef _
- DHCPV6_PD_CLIENT_N_NEXT,
-} dhcpv6_pd_client_next_t;
-
-/**
- * per-packet trace data
- */
-typedef struct dhcpv6_pd_client_trace_t_
-{
-} dhcpv6_pd_client_trace_t;
-
-static u8 *
-format_dhcpv6_pd_client_trace (u8 * s, va_list * args)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- //dhcpv6_pd_client_trace_t *t = va_arg (*args, dhcpv6_pd_client_trace_t *);
-
- s = format (s, "nothing");
-
- return s;
-}
-
-static u32
-server_index_get_or_create (u8 * data, u16 len)
-{
- dhcp6_pd_client_main_t *cm = &dhcp6_pd_client_main;
- u32 i;
- server_id_t *se;
- server_id_t new_se;
-
- for (i = 0; i < vec_len (cm->server_ids); i++)
- {
- se = &cm->server_ids[i];
- if (se->len == len && 0 == memcmp (se->data, data, len))
- return i;
- }
-
- new_se.len = len;
- new_se.data = 0;
- vec_validate (new_se.data, len - 1);
- memcpy (new_se.data, data, len);
-
- vec_add1 (cm->server_ids, new_se);
-
- return vec_len (cm->server_ids) - 1;
-}
-
static void
stop_sending_client_message (vlib_main_t * vm,
dhcp6_pd_client_state_t * client_state)
}
}
-static uword
-dhcpv6_pd_client_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- dhcp6_pd_client_main_t *cm = &dhcp6_pd_client_main;
-
- dhcpv6_pd_client_next_t next_index;
- u32 n_left_from, *from, *to_next;
- next_index = 0;
- n_left_from = frame->n_vectors;
- from = vlib_frame_vector_args (frame);
-
- 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)
- {
- ip6_header_t *ip0;
- u32 options_length;
- dhcpv6_header_t *dhcpv60;
- dhcpv6_option_t *option;
- vlib_buffer_t *b0;
- report_t report;
- u32 next0 = DHCPV6_PD_CLIENT_NEXT_DROP;
- u32 bi0;
- u32 xid;
- u32 sw_if_index;
- u32 iaid;
- u8 client_id_present = 0;
- u8 discard = 0;
-
- dhcp6_pd_client_state_t *client_state = NULL;
-
- 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);
-
- dhcpv60 = vlib_buffer_get_current (b0);
- ip0 = (void *) (b0->data + vnet_buffer (b0)->l3_hdr_offset);
- u32 dhcpv6_ip6_palyoad_offset =
- (u8 *) dhcpv60 - ((u8 *) ip0 + sizeof (*ip0));
- options_length =
- ntohs (ip0->payload_length) - dhcpv6_ip6_palyoad_offset -
- sizeof (*dhcpv60);
-
- memset (&report, 0, sizeof (report));
-
- sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- if (sw_if_index >= vec_len (cm->client_state_by_sw_if_index))
- client_state = 0;
- else
- client_state = &cm->client_state_by_sw_if_index[sw_if_index];
-
- xid =
- (dhcpv60->xid[0] << 16) + (dhcpv60->xid[1] << 8) +
- dhcpv60->xid[2];
- if (!client_state || client_state->transaction_id != xid)
- {
- clib_warning
- ("Received DHCPv6 message with wrong Transaction ID");
- discard = 1;
- }
-
- report.sw_if_index = sw_if_index;
- report.msg_type = dhcpv60->msg_type;
- report.server_index = ~0;
-
- switch (dhcpv60->msg_type)
- {
- case DHCPV6_MSG_ADVERTISE:
- case DHCPV6_MSG_REPLY:
- option = (dhcpv6_option_t *) (dhcpv60 + 1);
- while (options_length > 0)
- {
- if (options_length <
- ntohs (option->length) + sizeof (*option))
- {
- clib_warning
- ("remaining payload length < option length (%d < %d)",
- options_length,
- ntohs (option->length) + sizeof (*option));
- break;
- }
- u16 oo = ntohs (option->option);
- if (oo == DHCPV6_OPTION_IA_PD)
- {
- u8 discard_ia_pd = 0;
- dhcpv6_ia_header_t *ia_header = (void *) option;
- iaid = ntohl (ia_header->iaid);
- u32 T1 = ntohl (ia_header->t1);
- u32 T2 = ntohl (ia_header->t2);
- if (iaid != DHCPV6_CLIENT_IAID)
- discard_ia_pd = 1;
- if (T1 != 0 && T2 != 0 && T1 > T2)
- discard_ia_pd = 1;
- if (!discard_ia_pd)
- {
- report.T1 = T1;
- report.T2 = T2;
- }
- dhcpv6_option_t *inner_option =
- (void *) ia_header->data;
- u16 inner_options_length =
- ntohs (option->length) - (sizeof (*ia_header) -
- sizeof (dhcpv6_option_t));
- while (inner_options_length > 0)
- {
- u16 inner_oo = ntohs (inner_option->option);
- if (discard_ia_pd)
- ;
- else if (inner_oo == DHCPV6_OPTION_IAPREFIX)
- {
- dhcpv6_ia_opt_pd_t *iaprefix =
- (void *) inner_option;
- vec_validate (report.prefixes,
- report.n_prefixes);
- prefix_info_t *prefix_info =
- &report.prefixes[report.n_prefixes];
- report.n_prefixes++;
- prefix_info->preferred_time =
- ntohl (iaprefix->preferred);
- prefix_info->valid_time =
- ntohl (iaprefix->valid);
- prefix_info->prefix_length = iaprefix->prefix;
- prefix_info->prefix = iaprefix->addr;
- }
- else if (inner_oo == DHCPV6_OPTION_STATUS_CODE)
- {
- dhcpv6_status_code_t *sc =
- (void *) inner_option;
- report.inner_status_code =
- ntohs (sc->status_code);
- }
- inner_options_length -=
- sizeof (*inner_option) +
- ntohs (inner_option->length);
- inner_option =
- (void *) ((u8 *) inner_option +
- sizeof (*inner_option) +
- ntohs (inner_option->length));
- }
- }
- else if (oo == DHCPV6_OPTION_CLIENTID)
- {
- if (client_id_present)
- {
- clib_warning
- ("Duplicate Client ID in received DHVPv6 message");
- discard = 1;
- }
- else
- {
- u16 len = ntohs (option->length);
- client_id_present = 1;
- if (len != CLIENT_DUID_LENGTH ||
- 0 != memcmp (option->data,
- client_duid.bin_string,
- CLIENT_DUID_LENGTH))
- {
- clib_warning
- ("Unrecognized client DUID inside received DHVPv6 message");
- discard = 1;
- }
- }
- }
- else if (oo == DHCPV6_OPTION_SERVERID)
- {
- if (report.server_index != ~0)
- {
- clib_warning
- ("Duplicate Server ID in received DHVPv6 message");
- discard = 1;
- }
- else
- {
- u16 ol = ntohs (option->length);
- if (ol - 2 /* 2 byte DUID type code */ > 128)
- {
- clib_warning
- ("Server DUID (without type code) is longer than 128 octets");
- discard = 1;
- }
- else
- {
- report.server_index =
- server_index_get_or_create (option->data, ol);
- }
- }
- }
- else if (oo == DHCPV6_OPTION_PREFERENCE)
- {
- report.preference = option->data[0];
- }
- else if (oo == DHCPV6_OPTION_STATUS_CODE)
- {
- dhcpv6_status_code_t *sc = (void *) option;
- report.status_code = ntohs (sc->status_code);
- }
- options_length -= sizeof (*option) + ntohs (option->length);
- option =
- (void *) ((u8 *) option + sizeof (*option) +
- ntohs (option->length));
- }
-
- if (!client_id_present)
- {
- clib_warning
- ("Missing Client ID in received DHVPv6 message");
- discard = 1;
- }
- if (report.server_index == ~0)
- {
- clib_warning
- ("Missing Server ID in received DHVPv6 message");
- discard = 1;
- }
-
- if (!discard)
- publish_report (&report);
- else
- vec_free (report.prefixes);
-
- break;
- default:
- break;
- }
-
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- dhcpv6_pd_client_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- }
-
- /* verify speculative enqueue, maybe switch current next frame */
- 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);
- }
-
- return frame->n_vectors;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (dhcpv6_pd_client_node, static) = {
- .function = dhcpv6_pd_client_node_fn,
- .name = "dhcpv6-pd-client",
- .vector_size = sizeof (u32),
-
- .n_errors = 0,
-
- .n_next_nodes = DHCPV6_PD_CLIENT_N_NEXT,
- .next_nodes = {
- #define _(s,n) [DHCPV6_PD_CLIENT_NEXT_##s] = n,
- foreach_dhcpv6_pd_client
- #undef _
- },
-
- .format_trace = format_dhcpv6_pd_client_trace,
-};
-/* *INDENT-ON* */
-
-static_always_inline f64
-random_f64_from_to (f64 from, f64 to)
-{
- static u32 seed = 0;
- static u8 seed_set = 0;
- if (!seed_set)
- {
- seed = random_default_seed ();
- seed_set = 1;
- }
- return random_f64 (&seed) * (to - from) + from;
-}
-
-static const ip6_address_t all_dhcp6_relay_agents_and_servers = {
- .as_u8 = {
- 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02}
-};
-
static vlib_buffer_t *
create_buffer_for_client_message (vlib_main_t * vm,
u32 sw_if_index,
dhcp6_pd_client_state_t
* client_state, u32 type)
{
- dhcp6_pd_client_main_t *dm = &dhcp6_pd_client_main;
+ dhcp6_client_common_main_t *ccm = &dhcp6_client_common_main;
vnet_main_t *vnm = vnet_get_main ();
vlib_buffer_t *b;
if (client_state->params.server_index != ~0)
{
server_id_t *se =
- &dm->server_ids[client_state->params.server_index];
+ &ccm->server_ids[client_state->params.server_index];
duid = (dhcpv6_option_t *) d;
duid->option = clib_host_to_net_u16 (DHCPV6_OPTION_SERVERID);
}
/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (send_dhcp6_pd_client_message_process_node) = {
+VLIB_REGISTER_NODE (send_dhcp6_pd_client_message_process_node, static) = {
.function = send_dhcp6_pd_client_message_process,
.type = VLIB_NODE_TYPE_PROCESS,
.name = "send-dhcp6-pd-client-message-process",
int i;
if (event_type == DHCP6_PD_DP_REPLY_REPORT)
{
- report_t *events = event_data;
+ prefix_report_t *events = event_data;
for (i = 0; i < vec_len (events); i++)
{
u32 event_size =
clib_mem_alloc (event_size);
memset (event, 0, event_size);
- event->sw_if_index = htonl (events[i].sw_if_index);
- event->server_index = htonl (events[i].server_index);
- event->msg_type = events[i].msg_type;
- event->T1 = htonl (events[i].T1);
- event->T2 = htonl (events[i].T2);
- event->inner_status_code = htons (events[i].inner_status_code);
- event->status_code = htons (events[i].status_code);
- event->preference = events[i].preference;
+ event->sw_if_index = htonl (events[i].body.sw_if_index);
+ event->server_index = htonl (events[i].body.server_index);
+ event->msg_type = events[i].body.msg_type;
+ event->T1 = htonl (events[i].body.T1);
+ event->T2 = htonl (events[i].body.T2);
+ event->inner_status_code =
+ htons (events[i].body.inner_status_code);
+ event->status_code = htons (events[i].body.status_code);
+ event->preference = events[i].body.preference;
event->n_prefixes = htonl (vec_len (events[i].prefixes));
vl_api_dhcp6_pd_prefix_info_t *prefix =
u32 j;
for (j = 0; j < vec_len (events[i].prefixes); j++)
{
- prefix_info_t *info = &events[i].prefixes[j];
+ dhcp6_prefix_info_t *info = &events[i].prefixes[j];
memcpy (prefix->prefix, &info->prefix, 16);
prefix->prefix_length = info->prefix_length;
prefix->valid_time = htonl (info->valid_time);
}
/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (dhcp6_pd_reply_process_node, ) = {
+VLIB_REGISTER_NODE (dhcp6_pd_reply_process_node) = {
.function = dhcp6_pd_reply_process,
.type = VLIB_NODE_TYPE_PROCESS,
.name = "dhcp6-pd-reply-publisher-process",
hash_unset (am->dhcp6_pd_reply_events_registration_hash,
mp->client_index);
if (pool_elts (am->dhcp6_pd_reply_events_registrations) == 0)
- dhcp6_pd_set_publisher_node (~0, REPORT_MAX);
+ dhcp6_pd_set_publisher_node (~0, DHCP6_PD_DP_REPORT_MAX);
goto reply;
}
}
REPLY_MACRO (VL_API_WANT_DHCP6_PD_REPLY_EVENTS_REPLY);
}
-void
-vl_api_dhcp6_duid_ll_set_t_handler (vl_api_dhcp6_duid_ll_set_t * mp)
-{
- vl_api_dhcp6_duid_ll_set_reply_t *rmp;
- dhcpv6_duid_ll_string_t *duid;
- int rv = 0;
-
- duid = (dhcpv6_duid_ll_string_t *) mp->duid_ll;
- if (duid->duid_type != htonl (DHCPV6_DUID_LL))
- {
- rv = VNET_API_ERROR_INVALID_VALUE;
- goto reply;
- }
- clib_memcpy (&client_duid, &duid, sizeof (client_duid));
-
-reply:
- REPLY_MACRO (VL_API_DHCP6_DUID_LL_SET_REPLY);
-}
-
-static void
-generate_client_duid (void)
-{
- client_duid.duid_type = htons (DHCPV6_DUID_LL);
- client_duid.hardware_type = htons (1);
-
- vnet_main_t *vnm = vnet_get_main ();
- vnet_interface_main_t *im = &vnm->interface_main;
- vnet_hw_interface_t *hi;
- ethernet_interface_t *eth_if = 0;
-
- /* *INDENT-OFF* */
- pool_foreach (hi, im->hw_interfaces,
- ({
- eth_if = ethernet_get_interface (ðernet_main, hi->hw_if_index);
- if (eth_if)
- break;
- }));
- /* *INDENT-ON* */
-
- if (eth_if)
- clib_memcpy (client_duid.lla, eth_if->address, 6);
- else
- {
- clib_warning ("Failed to find any Ethernet interface, "
- "setting DHCPv6 DUID link-layer address to random value");
- u32 seed = random_default_seed ();
- random_u32 (&seed);
- client_duid.lla[0] = 0xc2; /* locally administered unicast */
- client_duid.lla[1] = 0x18;
- client_duid.lla[2] = 0x44;
- client_duid.lla[3] = random_u32 (&seed);
- client_duid.lla[4] = random_u32 (&seed);
- client_duid.lla[5] = random_u32 (&seed);
- }
-}
-
-void
-dhcp6_clients_enable_disable (u8 enable)
-{
- vlib_main_t *vm = vlib_get_main ();
-
- if (enable)
- {
- if (client_duid.duid_type == 0)
- generate_client_duid ();
- udp_register_dst_port (vm, UDP_DST_PORT_dhcpv6_to_client,
- dhcpv6_pd_client_node.index, 0 /* is_ip6 */ );
- }
- else
- udp_unregister_dst_port (vm, UDP_DST_PORT_dhcpv6_to_client,
- 0 /* is_ip6 */ );
-}
-
-void
- vl_api_dhcp6_clients_enable_disable_t_handler
- (vl_api_dhcp6_clients_enable_disable_t * mp)
-{
- vl_api_dhcp6_clients_enable_disable_reply_t *rmp;
- int rv = 0;
-
- dhcp6_clients_enable_disable (mp->enable);
-
- REPLY_MACRO (VL_API_WANT_DHCP6_PD_REPLY_EVENTS_REPLY);
-}
-
static clib_error_t *
dhcp6_pd_client_init (vlib_main_t * vm)
{
#define included_vnet_dhcp6_pd_client_dp_h
#include <vlib/vlib.h>
-
-#define vl_typedefs /* define message structures */
-#include <vnet/vnet_all_api_h.h>
-#undef vl_typedefs
+#include <vnet/dhcp/dhcp6_client_common_dp.h>
typedef struct
{
dhcp6_pd_send_client_message_params_prefix_t *prefixes;
} dhcp6_pd_send_client_message_params_t;
+typedef struct
+{
+ u8 entry_valid;
+ u8 keep_sending_client_message; /* when true then next fields are valid */
+ dhcp6_pd_send_client_message_params_t params;
+ f64 transaction_start;
+ f64 sleep_interval;
+ f64 due_time;
+ u32 n_left;
+ f64 start_time;
+ u32 transaction_id;
+ vlib_buffer_t *buffer;
+ u32 elapsed_pos;
+ u32 adj_index;
+} dhcp6_pd_client_state_t;
+
+typedef struct
+{
+ dhcp6_pd_client_state_t *client_state_by_sw_if_index;
+
+ uword publisher_node;
+ uword publisher_et;
+
+ u32 seed;
+
+ /* convenience */
+ vlib_main_t *vlib_main;
+ vnet_main_t *vnet_main;
+} dhcp6_pd_client_main_t;
+
+extern dhcp6_pd_client_main_t dhcp6_pd_client_main;
+
+typedef struct
+{
+ ip6_address_t prefix;
+ u8 prefix_length;
+ u32 valid_time;
+ u32 preferred_time;
+ u16 status_code;
+} dhcp6_prefix_info_t;
+
+typedef struct
+{
+ dhcp6_report_common_t body;
+ u32 n_prefixes;
+ dhcp6_prefix_info_t *prefixes;
+} prefix_report_t;
+
+#define vl_typedefs /* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
void dhcp6_pd_send_client_message (vlib_main_t * vm, u32 sw_if_index, u8 stop,
dhcp6_pd_send_client_message_params_t *
params);
void dhcp6_pd_set_publisher_node (uword node_index, uword event_type);
-void dhcp6_clients_enable_disable (u8 enable);
+int dhcp6_pd_publish_report (prefix_report_t * r);
void
vl_api_want_dhcp6_pd_reply_events_t_handler
void
vl_api_dhcp6_clients_enable_disable_t_handler
(vl_api_dhcp6_clients_enable_disable_t * mp);
-void vl_api_dhcp6_duid_ll_set_t_handler (vl_api_dhcp6_duid_ll_set_t * mp);
extern vlib_node_registration_t dhcp6_pd_reply_process_node;
enum
-{ DHCP6_PD_DP_REPLY_REPORT, REPORT_MAX };
+{ DHCP6_PD_DP_REPLY_REPORT, DHCP6_PD_DP_REPORT_MAX };
typedef struct _vnet_dhcp6_pd_reply_function_list_elt
{
#include <vnet/dhcp/dhcp_proxy.h>
#include <vnet/dhcp/client.h>
#include <vnet/dhcp/dhcp6_pd_client_dp.h>
+#include <vnet/dhcp/dhcp6_ia_na_client_dp.h>
+#include <vnet/dhcp/dhcp6_client_common_dp.h>
#include <vnet/fib/fib_table.h>
#include <vnet/vnet_msg_enum.h>
_(DHCP_CLIENT_DUMP, dhcp_client_dump) \
_(WANT_DHCP6_PD_REPLY_EVENTS, want_dhcp6_pd_reply_events) \
_(DHCP6_PD_SEND_CLIENT_MESSAGE, dhcp6_pd_send_client_message) \
-_(DHCP6_CLIENTS_ENABLE_DISABLE, dhcp6_clients_enable_disable) \
+_(WANT_DHCP6_REPLY_EVENTS, want_dhcp6_reply_events) \
+_(DHCP6_SEND_CLIENT_MESSAGE, dhcp6_send_client_message) \
+_(DHCP6_CLIENTS_ENABLE_DISABLE, dhcp6_clients_enable_disable) \
_(DHCP6_DUID_LL_SET, dhcp6_duid_ll_set)
dhcp6_pd_set_publisher_node (dhcp6_pd_reply_process_node.index,
DHCP6_PD_DP_REPLY_REPORT);
+ dhcp6_set_publisher_node (dhcp6_reply_process_node.index,
+ DHCP6_DP_REPLY_REPORT);
return 0;
}
#include <vnet/sctp/sctp.api.h>
#include <vnet/qos/qos.api.h>
#include <vnet/dhcp/dhcp6_pd_client_cp.api.h>
+#include <vnet/dhcp/dhcp6_ia_na_client_cp.api.h>
/*
* fd.io coding-style-patch-verification: ON
from scapy.layers.dhcp6 import DHCP6_Advertise, DHCP6OptClientId, \
DHCP6OptStatusCode, DHCP6OptPref, DHCP6OptIA_PD, DHCP6OptIAPrefix, \
DHCP6OptServerId, DHCP6_Solicit, DHCP6_Reply, DHCP6_Request, DHCP6_Renew, \
- DHCP6_Rebind, DUID_LL, DHCP6_Release, DHCP6OptElapsedTime
+ DHCP6_Rebind, DUID_LL, DHCP6_Release, DHCP6OptElapsedTime, DHCP6OptIA_NA, \
+ DHCP6OptIAAddress
from scapy.layers.inet6 import IPv6, Ether, UDP
from scapy.utils6 import in6_mactoifaceid
from scapy.utils import inet_ntop, inet_pton
from socket import AF_INET6
from framework import VppTestCase
-from time import time
def ip6_normalize(ip6):
return addr
-class TestDHCPv6PD(VppTestCase):
- """ DHCPv6 PD Data Plane Test Case """
+class TestDHCPv6DataPlane(VppTestCase):
+ """ DHCPv6 Data Plane Test Case """
@classmethod
def setUpClass(cls):
- super(TestDHCPv6PD, cls).setUpClass()
+ super(TestDHCPv6DataPlane, cls).setUpClass()
def setUp(self):
- super(TestDHCPv6PD, self).setUp()
+ super(TestDHCPv6DataPlane, self).setUp()
self.create_pg_interfaces(range(1))
self.interfaces = list(self.pg_interfaces)
for i in self.interfaces:
i.unconfig_ip6()
i.admin_down()
- super(TestDHCPv6PD, self).tearDown()
+ super(TestDHCPv6DataPlane, self).tearDown()
- def test_dhcp_send_solicit_receive_advertise(self):
- """ Verify DHCPv6 PD Solicit packet and received Advertise envent """
+ def test_dhcp_ia_na_send_solicit_receive_advertise(self):
+ """ Verify DHCPv6 IA NA Solicit packet and Advertise envent """
+
+ self.vapi.dhcp6_clients_enable_disable()
+
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ address_bin = '\00\01\00\02\00\03' + '\00' * 8 + '\00\05'
+ address = {'address': address_bin,
+ 'preferred_time': 60,
+ 'valid_time': 120}
+ self.vapi.dhcp6_send_client_message(1, self.pg0.sw_if_index,
+ T1=20, T2=40, addresses=[address])
+ rx_list = self.pg0.get_capture(1)
+ self.assertEqual(len(rx_list), 1)
+ packet = rx_list[0]
+
+ self.assertTrue(packet.haslayer(IPv6))
+ self.assertTrue(packet[IPv6].haslayer(DHCP6_Solicit))
+
+ client_duid = packet[DHCP6OptClientId].duid
+ trid = packet[DHCP6_Solicit].trid
+
+ dst = ip6_normalize(packet[IPv6].dst)
+ dst2 = ip6_normalize("ff02::1:2")
+ self.assert_equal(dst, dst2)
+ src = ip6_normalize(packet[IPv6].src)
+ src2 = ip6_normalize(self.pg0.local_ip6_ll)
+ self.assert_equal(src, src2)
+ ia_na = packet[DHCP6OptIA_NA]
+ self.assert_equal(ia_na.T1, 20)
+ self.assert_equal(ia_na.T2, 40)
+ self.assert_equal(len(ia_na.ianaopts), 1)
+ address = ia_na.ianaopts[0]
+ self.assert_equal(address.addr, '1:2:3::5')
+ self.assert_equal(address.preflft, 60)
+ self.assert_equal(address.validlft, 120)
+
+ self.vapi.want_dhcp6_reply_events()
+
+ try:
+ ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=60,
+ validlft=120)
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IPv6(src=mk_ll_addr(self.pg0.remote_mac),
+ dst=self.pg0.local_ip6_ll) /
+ UDP(sport=547, dport=546) /
+ DHCP6_Advertise(trid=trid) /
+ DHCP6OptServerId(duid=self.server_duid) /
+ DHCP6OptClientId(duid=client_duid) /
+ DHCP6OptPref(prefval=7) /
+ DHCP6OptStatusCode(statuscode=1) /
+ DHCP6OptIA_NA(iaid=1, T1=20, T2=40, ianaopts=ia_na_opts)
+ )
+ self.pg0.add_stream([p])
+ self.pg_start()
+
+ ev = self.vapi.wait_for_event(1, "dhcp6_reply_event")
+
+ self.assert_equal(ev.preference, 7)
+ self.assert_equal(ev.status_code, 1)
+ self.assert_equal(ev.T1, 20)
+ self.assert_equal(ev.T2, 40)
+
+ reported_address = ev.addresses[0]
+ address = inet_pton(AF_INET6, ia_na_opts.getfieldval("addr"))
+ self.assert_equal(reported_address.address, address)
+ self.assert_equal(reported_address.preferred_time,
+ ia_na_opts.getfieldval("preflft"))
+ self.assert_equal(reported_address.valid_time,
+ ia_na_opts.getfieldval("validlft"))
+
+ finally:
+ self.vapi.want_dhcp6_reply_events(enable_disable=0)
+
+ def test_dhcp_pd_send_solicit_receive_advertise(self):
+ """ Verify DHCPv6 PD Solicit packet and Advertise envent """
self.vapi.dhcp6_clients_enable_disable()
self.vapi.want_dhcp6_pd_reply_events()
- ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=60,
- validlft=120)
+ try:
+ ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=60,
+ validlft=120)
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IPv6(src=mk_ll_addr(self.pg0.remote_mac),
+ dst=self.pg0.local_ip6_ll) /
+ UDP(sport=547, dport=546) /
+ DHCP6_Advertise(trid=trid) /
+ DHCP6OptServerId(duid=self.server_duid) /
+ DHCP6OptClientId(duid=client_duid) /
+ DHCP6OptPref(prefval=7) /
+ DHCP6OptStatusCode(statuscode=1) /
+ DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
+ )
+ self.pg0.add_stream([p])
+ self.pg_start()
+
+ ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
+
+ self.assert_equal(ev.preference, 7)
+ self.assert_equal(ev.status_code, 1)
+ self.assert_equal(ev.T1, 20)
+ self.assert_equal(ev.T2, 40)
+
+ reported_prefix = ev.prefixes[0]
+ prefix = inet_pton(AF_INET6, ia_pd_opts.getfieldval("prefix"))
+ self.assert_equal(reported_prefix.prefix, prefix)
+ self.assert_equal(reported_prefix.prefix_length,
+ ia_pd_opts.getfieldval("plen"))
+ self.assert_equal(reported_prefix.preferred_time,
+ ia_pd_opts.getfieldval("preflft"))
+ self.assert_equal(reported_prefix.valid_time,
+ ia_pd_opts.getfieldval("validlft"))
+
+ finally:
+ self.vapi.want_dhcp6_pd_reply_events(enable_disable=0)
+
+
+class TestDHCPv6IANAControlPlane(VppTestCase):
+ """ DHCPv6 IA NA Control Plane Test Case """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestDHCPv6IANAControlPlane, cls).setUpClass()
+
+ def setUp(self):
+ super(TestDHCPv6IANAControlPlane, self).setUp()
+
+ self.create_pg_interfaces(range(1))
+ self.interfaces = list(self.pg_interfaces)
+ for i in self.interfaces:
+ i.admin_up()
+
+ self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac)
+ self.client_duid = None
+ self.T1 = 1
+ self.T2 = 2
+
+ fib = self.vapi.ip6_fib_dump()
+ self.initial_addresses = set(self.get_interface_addresses(fib,
+ self.pg0))
+
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.vapi.dhcp6_client_enable_disable(self.pg0.sw_if_index)
+
+ def tearDown(self):
+ self.vapi.dhcp6_client_enable_disable(self.pg0.sw_if_index, enable=0)
+
+ for i in self.interfaces:
+ i.admin_down()
+
+ super(TestDHCPv6IANAControlPlane, self).tearDown()
+
+ @staticmethod
+ def get_interface_addresses(fib, pg):
+ lst = []
+ for entry in fib:
+ if entry.address_length == 128:
+ path = entry.path[0]
+ if path.sw_if_index == pg.sw_if_index:
+ lst.append(entry.address)
+ return lst
+
+ def get_addresses(self):
+ fib = self.vapi.ip6_fib_dump()
+ addresses = set(self.get_interface_addresses(fib, self.pg0))
+ return addresses.difference(self.initial_addresses)
+
+ def validate_duid_ll(self, duid):
+ DUID_LL(duid)
+
+ def validate_packet(self, packet, msg_type, is_resend=False):
+ try:
+ self.assertTrue(packet.haslayer(msg_type))
+ client_duid = packet[DHCP6OptClientId].duid
+ if self.client_duid is None:
+ self.client_duid = client_duid
+ self.validate_duid_ll(client_duid)
+ else:
+ self.assertEqual(self.client_duid, client_duid)
+ if msg_type != DHCP6_Solicit and msg_type != DHCP6_Rebind:
+ server_duid = packet[DHCP6OptServerId].duid
+ self.assertEqual(server_duid, self.server_duid)
+ if is_resend:
+ self.assertEqual(self.trid, packet[msg_type].trid)
+ else:
+ self.trid = packet[msg_type].trid
+ ip = packet[IPv6]
+ udp = packet[UDP]
+ self.assertEqual(ip.dst, 'ff02::1:2')
+ self.assertEqual(udp.sport, 546)
+ self.assertEqual(udp.dport, 547)
+ dhcpv6 = packet[msg_type]
+ elapsed_time = dhcpv6[DHCP6OptElapsedTime]
+ if (is_resend):
+ self.assertNotEqual(elapsed_time.elapsedtime, 0)
+ else:
+ self.assertEqual(elapsed_time.elapsedtime, 0)
+ except:
+ packet.show()
+ raise
+
+ def wait_for_packet(self, msg_type, timeout=None, is_resend=False):
+ if timeout is None:
+ timeout = 3
+ rx_list = self.pg0.get_capture(1, timeout=timeout)
+ packet = rx_list[0]
+ self.validate_packet(packet, msg_type, is_resend=is_resend)
+
+ def wait_for_solicit(self, timeout=None, is_resend=False):
+ self.wait_for_packet(DHCP6_Solicit, timeout, is_resend=is_resend)
+
+ def wait_for_request(self, timeout=None, is_resend=False):
+ self.wait_for_packet(DHCP6_Request, timeout, is_resend=is_resend)
+
+ def wait_for_renew(self, timeout=None, is_resend=False):
+ self.wait_for_packet(DHCP6_Renew, timeout, is_resend=is_resend)
+
+ def wait_for_rebind(self, timeout=None, is_resend=False):
+ self.wait_for_packet(DHCP6_Rebind, timeout, is_resend=is_resend)
+
+ def wait_for_release(self, timeout=None, is_resend=False):
+ self.wait_for_packet(DHCP6_Release, timeout, is_resend=is_resend)
+
+ def send_packet(self, msg_type, t1=None, t2=None, ianaopts=None):
+ if t1 is None:
+ t1 = self.T1
+ if t2 is None:
+ t2 = self.T2
+ if ianaopts is None:
+ opt_ia_na = DHCP6OptIA_NA(iaid=1, T1=t1, T2=t2)
+ else:
+ opt_ia_na = DHCP6OptIA_NA(iaid=1, T1=t1, T2=t2, ianaopts=ianaopts)
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IPv6(src=mk_ll_addr(self.pg0.remote_mac),
dst=self.pg0.local_ip6_ll) /
UDP(sport=547, dport=546) /
- DHCP6_Advertise(trid=trid) /
+ msg_type(trid=self.trid) /
DHCP6OptServerId(duid=self.server_duid) /
- DHCP6OptClientId(duid=client_duid) /
- DHCP6OptPref(prefval=7) /
- DHCP6OptStatusCode(statuscode=1) /
- DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
+ DHCP6OptClientId(duid=self.client_duid) /
+ opt_ia_na
)
self.pg0.add_stream([p])
+ self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
+ def send_advertise(self, t1=None, t2=None, ianaopts=None):
+ self.send_packet(DHCP6_Advertise, t1, t2, ianaopts)
+
+ def send_reply(self, t1=None, t2=None, ianaopts=None):
+ self.send_packet(DHCP6_Reply, t1, t2, ianaopts)
+
+ def test_T1_and_T2_timeouts(self):
+ """ Test T1 and T2 timeouts """
+
+ self.wait_for_solicit()
+ self.send_advertise()
+ self.wait_for_request()
+ self.send_reply()
+
+ self.sleep(1)
+
+ self.wait_for_renew()
+
+ self.pg_enable_capture(self.pg_interfaces)
+
+ self.sleep(1)
+
+ self.wait_for_rebind()
+
+ def test_addresses(self):
+ """ Test handling of addresses """
- self.assert_equal(ev.preference, 7)
- self.assert_equal(ev.status_code, 1)
- self.assert_equal(ev.T1, 20)
- self.assert_equal(ev.T2, 40)
+ ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=1,
+ validlft=2)
- reported_prefix = ev.prefixes[0]
- prefix = inet_pton(AF_INET6, ia_pd_opts.getfieldval("prefix"))
- self.assert_equal(reported_prefix.prefix, prefix)
- self.assert_equal(reported_prefix.prefix_length,
- ia_pd_opts.getfieldval("plen"))
- self.assert_equal(reported_prefix.preferred_time,
- ia_pd_opts.getfieldval("preflft"))
- self.assert_equal(reported_prefix.valid_time,
- ia_pd_opts.getfieldval("validlft"))
+ self.wait_for_solicit()
+ self.send_advertise(t1=20, t2=40, ianaopts=ia_na_opts)
+ self.wait_for_request()
+ self.send_reply(t1=20, t2=40, ianaopts=ia_na_opts)
+ self.sleep(0.1)
+
+ # check FIB for new address
+ new_addresses = self.get_addresses()
+ self.assertEqual(len(new_addresses), 1)
+ addr = list(new_addresses)[0]
+ self.assertEqual(inet_ntop(AF_INET6, addr), '7:8::2')
+
+ self.sleep(2)
+
+ # check that the address is deleted
+ fib = self.vapi.ip6_fib_dump()
+ addresses = set(self.get_interface_addresses(fib, self.pg0))
+ new_addresses = addresses.difference(self.initial_addresses)
+ self.assertEqual(len(new_addresses), 0)
+
+ def test_sending_client_messages_solicit(self):
+ """ VPP receives messages from DHCPv6 client """
+
+ self.wait_for_solicit()
+ self.send_packet(DHCP6_Solicit)
+ self.send_packet(DHCP6_Request)
+ self.send_packet(DHCP6_Renew)
+ self.send_packet(DHCP6_Rebind)
+ self.sleep(1)
+ self.wait_for_solicit(is_resend=True)
+
+ def test_sending_inappropriate_packets(self):
+ """ Server sends messages with inappropriate message types """
+
+ self.wait_for_solicit()
+ self.send_reply()
+ self.wait_for_solicit(is_resend=True)
+ self.send_advertise()
+ self.wait_for_request()
+ self.send_advertise()
+ self.wait_for_request(is_resend=True)
+ self.send_reply()
+ self.wait_for_renew()
+
+ def test_no_address_available_in_advertise(self):
+ """ Advertise message contains NoAddrsAvail status code """
+
+ self.wait_for_solicit()
+ noavail = DHCP6OptStatusCode(statuscode=2) # NoAddrsAvail
+ self.send_advertise(ianaopts=noavail)
+ self.wait_for_solicit(is_resend=True)
+
+ def test_preferred_greater_than_valit_lifetime(self):
+ """ Preferred lifetime is greater than valid lifetime """
+
+ self.wait_for_solicit()
+ self.send_advertise()
+ self.wait_for_request()
+ ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=4, validlft=3)
+ self.send_reply(ianaopts=ia_na_opts)
+
+ self.sleep(0.5)
+
+ # check FIB contains no addresses
+ fib = self.vapi.ip6_fib_dump()
+ addresses = set(self.get_interface_addresses(fib, self.pg0))
+ new_addresses = addresses.difference(self.initial_addresses)
+ self.assertEqual(len(new_addresses), 0)
+
+ def test_T1_greater_than_T2(self):
+ """ T1 is greater than T2 """
+
+ self.wait_for_solicit()
+ self.send_advertise()
+ self.wait_for_request()
+ ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=4, validlft=8)
+ self.send_reply(t1=80, t2=40, ianaopts=ia_na_opts)
+
+ self.sleep(0.5)
+
+ # check FIB contains no addresses
+ fib = self.vapi.ip6_fib_dump()
+ addresses = set(self.get_interface_addresses(fib, self.pg0))
+ new_addresses = addresses.difference(self.initial_addresses)
+ self.assertEqual(len(new_addresses), 0)
class TestDHCPv6PDControlPlane(VppTestCase):
def test_prefixes(self):
""" Test handling of prefixes """
+
address_bin_1 = None
address_bin_2 = None
try:
self.sleep(1)
self.wait_for_solicit(is_resend=True)
- def test_sending_inapropriate_packets(self):
- """ Server sends messages with inapropriate message types """
+ def test_sending_inappropriate_packets(self):
+ """ Server sends messages with inappropriate message types """
self.wait_for_solicit()
self.send_reply()
'learn_limit': learn_limit,
'pid': os.getpid(), })
+ def want_dhcp6_reply_events(self, enable_disable=1):
+ return self.api(self.papi.want_dhcp6_reply_events,
+ {'enable_disable': enable_disable,
+ 'pid': os.getpid()})
+
def want_dhcp6_pd_reply_events(self, enable_disable=1):
return self.api(self.papi.want_dhcp6_pd_reply_events,
{'enable_disable': enable_disable,
return self.api(self.papi.dhcp6_clients_enable_disable,
{'enable': enable})
+ def dhcp6_send_client_message(self, msg_type, sw_if_index, T1, T2,
+ addresses, server_index=0xFFFFFFFF,
+ irt=0, mrt=0, mrc=1, mrd=0, stop=0,
+ ):
+ return self.api(self.papi.dhcp6_send_client_message,
+ {'sw_if_index': sw_if_index,
+ 'server_index': server_index,
+ 'irt': irt,
+ 'mrt': mrt,
+ 'mrc': mrc,
+ 'mrd': mrd,
+ 'stop': stop,
+ 'msg_type': msg_type,
+ 'T1': T1,
+ 'T2': T2,
+ 'n_addresses': len(addresses),
+ 'addresses': addresses})
+
def dhcp6_pd_send_client_message(self, msg_type, sw_if_index, T1, T2,
prefixes, server_index=0xFFFFFFFF,
irt=0, mrt=0, mrc=1, mrd=0, stop=0,
'n_prefixes': len(prefixes),
'prefixes': prefixes})
+ def dhcp6_client_enable_disable(self, sw_if_index, prefix_group='',
+ enable=1):
+ return self.api(self.papi.dhcp6_client_enable_disable,
+ {'sw_if_index': sw_if_index,
+ 'enable': enable})
+
def dhcp6_pd_client_enable_disable(self, sw_if_index, prefix_group='',
enable=1):
return self.api(self.papi.dhcp6_pd_client_enable_disable,
Code Review / vpp.git / commitdiff