diff options
Diffstat (limited to 'src/network/networkd-ipv4ll.c')
-rw-r--r-- | src/network/networkd-ipv4ll.c | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/src/network/networkd-ipv4ll.c b/src/network/networkd-ipv4ll.c deleted file mode 100644 index ae323d595b..0000000000 --- a/src/network/networkd-ipv4ll.c +++ /dev/null @@ -1,243 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013-2014 Tom Gundersen <teg@jklm.no> - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <netinet/ether.h> -#include <linux/if.h> - -#include "network-internal.h" -#include "networkd.h" - -static int ipv4ll_address_lost(Link *link) { - _cleanup_address_free_ Address *address = NULL; - _cleanup_route_free_ Route *route = NULL; - struct in_addr addr; - int r; - - assert(link); - - link->ipv4ll_route = false; - link->ipv4ll_address = false; - - r = sd_ipv4ll_get_address(link->ipv4ll, &addr); - if (r < 0) - return 0; - - log_link_debug(link, "IPv4 link-local release %u.%u.%u.%u", ADDRESS_FMT_VAL(addr)); - - r = address_new(&address); - if (r < 0) { - log_link_error_errno(link, r, "Could not allocate address: %m"); - return r; - } - - address->family = AF_INET; - address->in_addr.in = addr; - address->prefixlen = 16; - address->scope = RT_SCOPE_LINK; - - address_remove(address, link, link_address_remove_handler); - - r = route_new(&route); - if (r < 0) { - log_link_error_errno(link, r, "Could not allocate route: %m"); - return r; - } - - route->family = AF_INET; - route->scope = RT_SCOPE_LINK; - route->priority = IPV4LL_ROUTE_METRIC; - - route_remove(route, link, link_route_remove_handler); - - link_check_ready(link); - - return 0; -} - -static int ipv4ll_route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { - _cleanup_link_unref_ Link *link = userdata; - int r; - - assert(link); - assert(!link->ipv4ll_route); - - r = sd_netlink_message_get_errno(m); - if (r < 0 && r != -EEXIST) { - log_link_error_errno(link, r, "could not set ipv4ll route: %m"); - link_enter_failed(link); - } - - link->ipv4ll_route = true; - - if (link->ipv4ll_address == true) - link_check_ready(link); - - return 1; -} - -static int ipv4ll_address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { - _cleanup_link_unref_ Link *link = userdata; - int r; - - assert(link); - assert(!link->ipv4ll_address); - - r = sd_netlink_message_get_errno(m); - if (r < 0 && r != -EEXIST) { - log_link_error_errno(link, r, "could not set ipv4ll address: %m"); - link_enter_failed(link); - } else if (r >= 0) - manager_rtnl_process_address(rtnl, m, link->manager); - - link->ipv4ll_address = true; - - if (link->ipv4ll_route == true) - link_check_ready(link); - - return 1; -} - -static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) { - _cleanup_address_free_ Address *ll_addr = NULL; - _cleanup_route_free_ Route *route = NULL; - struct in_addr address; - int r; - - assert(ll); - assert(link); - - r = sd_ipv4ll_get_address(ll, &address); - if (r == -ENOENT) - return 0; - else if (r < 0) - return r; - - log_link_debug(link, "IPv4 link-local claim %u.%u.%u.%u", - ADDRESS_FMT_VAL(address)); - - r = address_new(&ll_addr); - if (r < 0) - return r; - - ll_addr->family = AF_INET; - ll_addr->in_addr.in = address; - ll_addr->prefixlen = 16; - ll_addr->broadcast.s_addr = ll_addr->in_addr.in.s_addr | htonl(0xfffffffflu >> ll_addr->prefixlen); - ll_addr->scope = RT_SCOPE_LINK; - - r = address_configure(ll_addr, link, ipv4ll_address_handler, false); - if (r < 0) - return r; - - link->ipv4ll_address = false; - - r = route_new(&route); - if (r < 0) - return r; - - route->family = AF_INET; - route->scope = RT_SCOPE_LINK; - route->protocol = RTPROT_STATIC; - route->priority = IPV4LL_ROUTE_METRIC; - - r = route_configure(route, link, ipv4ll_route_handler); - if (r < 0) - return r; - - link->ipv4ll_route = false; - - return 0; -} - -static void ipv4ll_handler(sd_ipv4ll *ll, int event, void *userdata) { - Link *link = userdata; - int r; - - assert(link); - assert(link->network); - assert(link->manager); - - if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) - return; - - switch(event) { - case SD_IPV4LL_EVENT_STOP: - case SD_IPV4LL_EVENT_CONFLICT: - r = ipv4ll_address_lost(link); - if (r < 0) { - link_enter_failed(link); - return; - } - break; - case SD_IPV4LL_EVENT_BIND: - r = ipv4ll_address_claimed(ll, link); - if (r < 0) { - link_enter_failed(link); - return; - } - break; - default: - log_link_warning(link, "IPv4 link-local unknown event: %d", event); - break; - } -} - -int ipv4ll_configure(Link *link) { - uint64_t seed; - int r; - - assert(link); - assert(link->network); - assert(link->network->link_local & ADDRESS_FAMILY_IPV4); - - if (!link->ipv4ll) { - r = sd_ipv4ll_new(&link->ipv4ll); - if (r < 0) - return r; - } - - if (link->udev_device) { - r = net_get_unique_predictable_data(link->udev_device, &seed); - if (r >= 0) { - assert_cc(sizeof(unsigned) <= 8); - - r = sd_ipv4ll_set_address_seed(link->ipv4ll, (unsigned)seed); - if (r < 0) - return r; - } - } - - r = sd_ipv4ll_attach_event(link->ipv4ll, NULL, 0); - if (r < 0) - return r; - - r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac); - if (r < 0) - return r; - - r = sd_ipv4ll_set_index(link->ipv4ll, link->ifindex); - if (r < 0) - return r; - - r = sd_ipv4ll_set_callback(link->ipv4ll, ipv4ll_handler, link); - if (r < 0) - return r; - - return 0; -} |