diff options
Diffstat (limited to 'src/network/networkd-dhcp6.c')
| -rw-r--r-- | src/network/networkd-dhcp6.c | 295 |
1 files changed, 91 insertions, 204 deletions
diff --git a/src/network/networkd-dhcp6.c b/src/network/networkd-dhcp6.c index 3a5ac1c39b..15acf56a5f 100644 --- a/src/network/networkd-dhcp6.c +++ b/src/network/networkd-dhcp6.c @@ -1,5 +1,3 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - /*** This file is part of systemd. @@ -22,12 +20,11 @@ #include <netinet/ether.h> #include <linux/if.h> -#include "networkd-link.h" -#include "network-internal.h" - -#include "sd-icmp6-nd.h" #include "sd-dhcp6-client.h" +#include "network-internal.h" +#include "networkd.h" + static int dhcp6_lease_address_acquired(sd_dhcp6_client *client, Link *link); static int dhcp6_lease_information_acquired(sd_dhcp6_client *client, @@ -53,24 +50,27 @@ static int dhcp6_address_handler(sd_netlink *rtnl, sd_netlink_message *m, return 1; } - log_link_error(link, "Could not set DHCPv6 address: %s", - strerror(-r)); + log_link_error_errno(link, r, "Could not set DHCPv6 address: %m"); link_enter_failed(link); } else if (r >= 0) - link_rtnl_process_address(rtnl, m, link->manager); + manager_rtnl_process_address(rtnl, m, link->manager); return 1; } -static int dhcp6_address_update(Link *link, struct in6_addr *ip6_addr, - uint8_t prefixlen, uint32_t lifetime_preferred, - uint32_t lifetime_valid) { - int r; +static int dhcp6_address_change( + Link *link, + struct in6_addr *ip6_addr, + uint32_t lifetime_preferred, + uint32_t lifetime_valid) { + _cleanup_address_free_ Address *addr = NULL; + char buffer[INET6_ADDRSTRLEN]; + int r; - r = address_new_dynamic(&addr); + r = address_new(&addr); if (r < 0) return r; @@ -78,17 +78,17 @@ static int dhcp6_address_update(Link *link, struct in6_addr *ip6_addr, memcpy(&addr->in_addr.in6, ip6_addr, sizeof(*ip6_addr)); addr->flags = IFA_F_NOPREFIXROUTE; - addr->prefixlen = prefixlen; + addr->prefixlen = 128; addr->cinfo.ifa_prefered = lifetime_preferred; addr->cinfo.ifa_valid = lifetime_valid; log_link_info(link, - "DHCPv6 address "SD_ICMP6_ADDRESS_FORMAT_STR"/%d timeout preferred %d valid %d", - SD_ICMP6_ADDRESS_FORMAT_VAL(addr->in_addr.in6), + "DHCPv6 address %s/%d timeout preferred %d valid %d", + inet_ntop(AF_INET6, &addr->in_addr.in6, buffer, sizeof(buffer)), addr->prefixlen, lifetime_preferred, lifetime_valid); - r = address_update(addr, link, dhcp6_address_handler); + r = address_configure(addr, link, dhcp6_address_handler, true); if (r < 0) log_link_warning_errno(link, r, "Could not assign DHCPv6 address: %m"); @@ -100,7 +100,6 @@ static int dhcp6_lease_address_acquired(sd_dhcp6_client *client, Link *link) { sd_dhcp6_lease *lease; struct in6_addr ip6_addr; uint32_t lifetime_preferred, lifetime_valid; - uint8_t prefixlen; r = sd_dhcp6_client_get_lease(client, &lease); if (r < 0) @@ -109,22 +108,10 @@ static int dhcp6_lease_address_acquired(sd_dhcp6_client *client, Link *link) { sd_dhcp6_lease_reset_address_iter(lease); while (sd_dhcp6_lease_get_address(lease, &ip6_addr, - &lifetime_preferred, - &lifetime_valid) >= 0) { - - r = sd_icmp6_ra_get_prefixlen(link->icmp6_router_discovery, - &ip6_addr, &prefixlen); - if (r < 0 && r != -EADDRNOTAVAIL) { - log_link_warning(link, "Could not get prefix information: %s", - strerror(-r)); - return r; - } - - if (r == -EADDRNOTAVAIL) - prefixlen = 128; + &lifetime_preferred, + &lifetime_valid) >= 0) { - r = dhcp6_address_update(link, &ip6_addr, prefixlen, - lifetime_preferred, lifetime_valid); + r = dhcp6_address_change(link, &ip6_addr, lifetime_preferred, lifetime_valid); if (r < 0) return r; } @@ -144,13 +131,16 @@ static void dhcp6_handler(sd_dhcp6_client *client, int event, void *userdata) { return; switch(event) { - case DHCP6_EVENT_STOP: - case DHCP6_EVENT_RESEND_EXPIRE: - case DHCP6_EVENT_RETRANS_MAX: - log_link_debug(link, "DHCPv6 event %d", event); + case SD_DHCP6_CLIENT_EVENT_STOP: + case SD_DHCP6_CLIENT_EVENT_RESEND_EXPIRE: + case SD_DHCP6_CLIENT_EVENT_RETRANS_MAX: + if (sd_dhcp6_client_get_lease(client, NULL) >= 0) + log_link_warning(link, "DHCPv6 lease lost"); + + link->dhcp6_configured = false; break; - case DHCP6_EVENT_IP_ACQUIRE: + case SD_DHCP6_CLIENT_EVENT_IP_ACQUIRE: r = dhcp6_lease_address_acquired(client, link); if (r < 0) { link_enter_failed(link); @@ -158,221 +148,118 @@ static void dhcp6_handler(sd_dhcp6_client *client, int event, void *userdata) { } /* fall through */ - case DHCP6_EVENT_INFORMATION_REQUEST: + case SD_DHCP6_CLIENT_EVENT_INFORMATION_REQUEST: r = dhcp6_lease_information_acquired(client, link); if (r < 0) { link_enter_failed(link); return; } + link->dhcp6_configured = true; break; default: if (event < 0) - log_link_warning(link, "DHCPv6 error: %s", - strerror(-event)); + log_link_warning_errno(link, event, "DHCPv6 error: %m"); else - log_link_warning(link, "DHCPv6 unknown event: %d", - event); + log_link_warning(link, "DHCPv6 unknown event: %d", event); return; } + + link_check_ready(link); } -static int dhcp6_configure(Link *link, int event) { - int r; - bool information_request; +int dhcp6_request_address(Link *link, int ir) { + int r, inf_req; + bool running; - assert_return(link, -EINVAL); + assert(link); + assert(link->dhcp6_client); + assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); - if (link->dhcp6_client) { - if (event != ICMP6_EVENT_ROUTER_ADVERTISMENT_MANAGED) - return 0; + r = sd_dhcp6_client_is_running(link->dhcp6_client); + if (r < 0) + return r; + else + running = !!r; - r = sd_dhcp6_client_get_information_request(link->dhcp6_client, - &information_request); - if (r < 0) { - log_link_warning(link, "Could not get DHCPv6 Information request setting: %s", - strerror(-r)); - link->dhcp6_client = - sd_dhcp6_client_unref(link->dhcp6_client); + if (running) { + r = sd_dhcp6_client_get_information_request(link->dhcp6_client, &inf_req); + if (r < 0) return r; - } - if (!information_request) - return r; + if (inf_req == ir) + return 0; - r = sd_dhcp6_client_set_information_request(link->dhcp6_client, - false); - if (r < 0) { - log_link_warning(link, "Could not unset DHCPv6 Information request: %s", - strerror(-r)); - link->dhcp6_client = - sd_dhcp6_client_unref(link->dhcp6_client); + r = sd_dhcp6_client_stop(link->dhcp6_client); + if (r < 0) return r; - } - - r = sd_dhcp6_client_start(link->dhcp6_client); - if (r < 0) { - log_link_warning(link, "Could not restart DHCPv6 after enabling Information request: %s", - strerror(-r)); - link->dhcp6_client = - sd_dhcp6_client_unref(link->dhcp6_client); + } else { + r = sd_dhcp6_client_set_local_address(link->dhcp6_client, &link->ipv6ll_address); + if (r < 0) return r; - } - - return r; } - r = sd_dhcp6_client_new(&link->dhcp6_client); + r = sd_dhcp6_client_set_information_request(link->dhcp6_client, ir); if (r < 0) return r; - r = sd_dhcp6_client_attach_event(link->dhcp6_client, NULL, 0); - if (r < 0) { - link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); - return r; - } - - r = sd_dhcp6_client_set_mac(link->dhcp6_client, - (const uint8_t *) &link->mac, - sizeof (link->mac), ARPHRD_ETHER); - if (r < 0) { - link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); - return r; - } - - r = sd_dhcp6_client_set_index(link->dhcp6_client, link->ifindex); - if (r < 0) { - link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); - return r; - } - - r = sd_dhcp6_client_set_callback(link->dhcp6_client, dhcp6_handler, - link); - if (r < 0) { - link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); - return r; - } - - if (event == ICMP6_EVENT_ROUTER_ADVERTISMENT_OTHER) { - r = sd_dhcp6_client_set_information_request(link->dhcp6_client, - true); - if (r < 0) { - link->dhcp6_client = - sd_dhcp6_client_unref(link->dhcp6_client); - return r; - } - } - r = sd_dhcp6_client_start(link->dhcp6_client); if (r < 0) - link->dhcp6_client = sd_dhcp6_client_unref(link->dhcp6_client); - - return r; -} - -static int dhcp6_prefix_expired(Link *link) { - int r; - sd_dhcp6_lease *lease; - struct in6_addr *expired_prefix, ip6_addr; - uint8_t expired_prefixlen; - uint32_t lifetime_preferred, lifetime_valid; - - r = sd_icmp6_ra_get_expired_prefix(link->icmp6_router_discovery, - &expired_prefix, &expired_prefixlen); - if (r < 0) - return r; - - r = sd_dhcp6_client_get_lease(link->dhcp6_client, &lease); - if (r < 0) return r; - log_link_info(link, "IPv6 prefix "SD_ICMP6_ADDRESS_FORMAT_STR"/%d expired", - SD_ICMP6_ADDRESS_FORMAT_VAL(*expired_prefix), - expired_prefixlen); - - sd_dhcp6_lease_reset_address_iter(lease); - - while (sd_dhcp6_lease_get_address(lease, &ip6_addr, - &lifetime_preferred, - &lifetime_valid) >= 0) { - - r = sd_icmp6_prefix_match(expired_prefix, expired_prefixlen, - &ip6_addr); - if (r < 0) - continue; - - log_link_info(link, "IPv6 prefix length updated "SD_ICMP6_ADDRESS_FORMAT_STR"/%d", SD_ICMP6_ADDRESS_FORMAT_VAL(ip6_addr), 128); - - dhcp6_address_update(link, &ip6_addr, 128, lifetime_preferred, lifetime_valid); - } - return 0; } -static void icmp6_router_handler(sd_icmp6_nd *nd, int event, void *userdata) { - Link *link = userdata; +int dhcp6_configure(Link *link) { + sd_dhcp6_client *client = NULL; + int r; + const DUID *duid; assert(link); - assert(link->network); - assert(link->manager); - - if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) - return; - - switch(event) { - case ICMP6_EVENT_ROUTER_ADVERTISMENT_NONE: - return; - - case ICMP6_EVENT_ROUTER_ADVERTISMENT_TIMEOUT: - case ICMP6_EVENT_ROUTER_ADVERTISMENT_OTHER: - case ICMP6_EVENT_ROUTER_ADVERTISMENT_MANAGED: - dhcp6_configure(link, event); - - break; - - case ICMP6_EVENT_ROUTER_ADVERTISMENT_PREFIX_EXPIRED: - if (!link->rtnl_extended_attrs) - dhcp6_prefix_expired(link); - - break; - default: - if (event < 0) - log_link_warning(link, "ICMPv6 error: %s", - strerror(-event)); - else - log_link_warning(link, "ICMPv6 unknown event: %d", - event); + if (link->dhcp6_client) + return 0; - break; - } - -} + r = sd_dhcp6_client_new(&client); + if (r < 0) + return r; -int icmp6_configure(Link *link) { - int r; + r = sd_dhcp6_client_attach_event(client, NULL, 0); + if (r < 0) + goto error; - assert_return(link, -EINVAL); + r = sd_dhcp6_client_set_mac(client, + (const uint8_t *) &link->mac, + sizeof (link->mac), ARPHRD_ETHER); + if (r < 0) + goto error; - r = sd_icmp6_nd_new(&link->icmp6_router_discovery); + r = sd_dhcp6_client_set_iaid(client, link->network->iaid); if (r < 0) - return r; + goto error; - r = sd_icmp6_nd_attach_event(link->icmp6_router_discovery, NULL, 0); + duid = link_duid(link); + r = sd_dhcp6_client_set_duid(client, + duid->type, + duid->raw_data_len > 0 ? duid->raw_data : NULL, + duid->raw_data_len); if (r < 0) - return r; + goto error; - r = sd_icmp6_nd_set_mac(link->icmp6_router_discovery, &link->mac); + r = sd_dhcp6_client_set_ifindex(client, link->ifindex); if (r < 0) - return r; + goto error; - r = sd_icmp6_nd_set_index(link->icmp6_router_discovery, link->ifindex); + r = sd_dhcp6_client_set_callback(client, dhcp6_handler, link); if (r < 0) - return r; + goto error; + + link->dhcp6_client = client; - r = sd_icmp6_nd_set_callback(link->icmp6_router_discovery, - icmp6_router_handler, link); + return 0; +error: + sd_dhcp6_client_unref(client); return r; } |