summaryrefslogtreecommitdiff
path: root/src/network
diff options
context:
space:
mode:
Diffstat (limited to 'src/network')
-rw-r--r--src/network/networkd-link.c391
1 files changed, 200 insertions, 191 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 17a1e49881..b004936e53 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -284,6 +284,204 @@ static int link_enter_set_addresses(Link *link) {
return 0;
}
+static int address_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
+ Link *link = userdata;
+ int r;
+
+ assert(m);
+ assert(link);
+ assert(link->ifname);
+
+ if (link->state == LINK_STATE_FAILED)
+ return 1;
+
+ r = sd_rtnl_message_get_errno(m);
+ if (r < 0 && r != -EEXIST)
+ log_warning("%s: could not drop address: %s",
+ link->ifname, strerror(-r));
+
+ return 1;
+}
+
+static void dhcp_handler(sd_dhcp_client *client, int event, void *userdata) {
+ Link *link = userdata;
+ struct in_addr address;
+ struct in_addr netmask;
+ struct in_addr gateway;
+ int prefixlen;
+ int r;
+
+ assert(link);
+
+ if (link->state == LINK_STATE_FAILED)
+ return;
+
+ if (event < 0) {
+ log_warning("%s: DHCP error: %s", link->ifname, strerror(-event));
+ link_enter_failed(link);
+ return;
+ }
+
+ if (event == DHCP_EVENT_NO_LEASE)
+ log_debug("%s: IP address in use.", link->ifname);
+
+ if (event == DHCP_EVENT_IP_CHANGE || event == DHCP_EVENT_EXPIRED ||
+ event == DHCP_EVENT_STOP) {
+ if (link->dhcp_address) {
+ address_drop(link->dhcp_address, link, address_drop_handler);
+
+ address_free(link->dhcp_address);
+ link->dhcp_address = NULL;
+ }
+
+ if (link->dhcp_route) {
+ route_free(link->dhcp_route);
+ link->dhcp_route = NULL;
+ }
+ }
+
+ r = sd_dhcp_client_get_address(client, &address);
+ if (r < 0) {
+ log_warning("%s: DHCP error: no address", link->ifname);
+ link_enter_failed(link);
+ return;
+ }
+
+ r = sd_dhcp_client_get_netmask(client, &netmask);
+ if (r < 0) {
+ log_warning("%s: DHCP error: no netmask", link->ifname);
+ link_enter_failed(link);
+ return;
+ }
+
+ prefixlen = sd_dhcp_client_prefixlen(&netmask);
+ if (prefixlen < 0) {
+ log_warning("%s: DHCP error: no prefixlen", link->ifname);
+ link_enter_failed(link);
+ return;
+ }
+
+ r = sd_dhcp_client_get_router(client, &gateway);
+ if (r < 0) {
+ log_warning("%s: DHCP error: no router", link->ifname);
+ link_enter_failed(link);
+ return;
+ }
+
+ if (event == DHCP_EVENT_IP_CHANGE || event == DHCP_EVENT_IP_ACQUIRE) {
+ _cleanup_address_free_ Address *addr = NULL;
+ _cleanup_route_free_ Route *rt = NULL;
+
+ log_info("%s: received config over DHCPv4", link->ifname);
+
+ r = address_new_dynamic(&addr);
+ if (r < 0) {
+ log_error("Could not allocate address");
+ link_enter_failed(link);
+ return;
+ }
+
+ addr->family = AF_INET;
+ addr->in_addr.in = address;
+ addr->prefixlen = prefixlen;
+ addr->netmask = netmask;
+
+ r = route_new_dynamic(&rt);
+ if (r < 0) {
+ log_error("Could not allocate route");
+ link_enter_failed(link);
+ return;
+ }
+
+ rt->family = AF_INET;
+ rt->in_addr.in = gateway;
+
+ link->dhcp_address = addr;
+ link->dhcp_route = rt;
+ addr = NULL;
+ rt = NULL;
+
+ link_enter_set_addresses(link);
+ }
+
+ return;
+}
+
+static int link_acquire_conf(Link *link) {
+ int r;
+
+ assert(link);
+ assert(link->network);
+ assert(link->network->dhcp);
+ assert(link->manager);
+ assert(link->manager->event);
+
+ if (!link->dhcp) {
+ link->dhcp = sd_dhcp_client_new(link->manager->event);
+ if (!link->dhcp)
+ return -ENOMEM;
+
+ r = sd_dhcp_client_set_index(link->dhcp, link->ifindex);
+ if (r < 0)
+ return r;
+
+ r = sd_dhcp_client_set_mac(link->dhcp, &link->mac);
+ if (r < 0)
+ return r;
+
+ r = sd_dhcp_client_set_callback(link->dhcp, dhcp_handler, link);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_dhcp_client_start(link->dhcp);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int link_update_flags(Link *link, unsigned flags) {
+ int r;
+
+ assert(link);
+ assert(link->network);
+
+ if (link->state == LINK_STATE_FAILED)
+ return 0;
+
+ if (link->flags & IFF_UP && !(flags & IFF_UP))
+ log_info("%s: interface is down", link->ifname);
+ else if (!(link->flags & IFF_UP) && flags & IFF_UP)
+ log_info("%s: interface is up", link->ifname);
+
+ if (link->flags & IFF_LOWER_UP && !(flags & IFF_LOWER_UP)) {
+ log_info("%s: disconnected", link->ifname);
+
+ if (link->network->dhcp) {
+ r = sd_dhcp_client_stop(link->dhcp);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+ }
+ } else if (!(link->flags & IFF_LOWER_UP) && flags & IFF_LOWER_UP) {
+ log_info("%s: connected", link->ifname);
+
+ if (link->network->dhcp) {
+ r = link_acquire_conf(link);
+ if (r < 0) {
+ link_enter_failed(link);
+ return r;
+ }
+ }
+ }
+
+ link->flags = flags;
+
+ return 0;
+}
+
static int link_up_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
Link *link = userdata;
int r;
@@ -300,7 +498,7 @@ static int link_up_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
link_enter_failed(link);
}
- log_debug("%s: brought up interface", link->ifname);
+ link_update_flags(link, link->flags | IFF_UP);
return 1;
}
@@ -470,169 +668,11 @@ int link_configure(Link *link) {
return link_enter_join_bridge(link);
}
-static int address_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
- Link *link = userdata;
- int r;
-
- assert(m);
- assert(link);
- assert(link->ifname);
-
- if (link->state == LINK_STATE_FAILED)
- return 1;
-
- r = sd_rtnl_message_get_errno(m);
- if (r < 0 && r != -EEXIST)
- log_warning("%s: could not drop address: %s",
- link->ifname, strerror(-r));
-
- return 1;
-}
-
-static void dhcp_handler(sd_dhcp_client *client, int event, void *userdata) {
- Link *link = userdata;
- struct in_addr address;
- struct in_addr netmask;
- struct in_addr gateway;
- int prefixlen;
- int r;
-
- assert(link);
-
- if (link->state == LINK_STATE_FAILED)
- return;
-
- if (event < 0) {
- log_warning("%s: DHCP error: %s", link->ifname, strerror(-event));
- link_enter_failed(link);
- return;
- }
-
- if (event == DHCP_EVENT_NO_LEASE)
- log_debug("%s: IP address in use.", link->ifname);
-
- if (event == DHCP_EVENT_IP_CHANGE || event == DHCP_EVENT_EXPIRED ||
- event == DHCP_EVENT_STOP) {
- if (link->dhcp_address) {
- address_drop(link->dhcp_address, link, address_drop_handler);
-
- address_free(link->dhcp_address);
- link->dhcp_address = NULL;
- }
-
- if (link->dhcp_route) {
- route_free(link->dhcp_route);
- link->dhcp_route = NULL;
- }
- }
-
- r = sd_dhcp_client_get_address(client, &address);
- if (r < 0) {
- log_warning("%s: DHCP error: no address", link->ifname);
- link_enter_failed(link);
- return;
- }
-
- r = sd_dhcp_client_get_netmask(client, &netmask);
- if (r < 0) {
- log_warning("%s: DHCP error: no netmask", link->ifname);
- link_enter_failed(link);
- return;
- }
-
- prefixlen = sd_dhcp_client_prefixlen(&netmask);
- if (prefixlen < 0) {
- log_warning("%s: DHCP error: no prefixlen", link->ifname);
- link_enter_failed(link);
- return;
- }
-
- r = sd_dhcp_client_get_router(client, &gateway);
- if (r < 0) {
- log_warning("%s: DHCP error: no router", link->ifname);
- link_enter_failed(link);
- return;
- }
-
- if (event == DHCP_EVENT_IP_CHANGE || event == DHCP_EVENT_IP_ACQUIRE) {
- _cleanup_address_free_ Address *addr = NULL;
- _cleanup_route_free_ Route *rt = NULL;
-
- log_info("%s: received config over DHCPv4", link->ifname);
-
- r = address_new_dynamic(&addr);
- if (r < 0) {
- log_error("Could not allocate address");
- link_enter_failed(link);
- return;
- }
-
- addr->family = AF_INET;
- addr->in_addr.in = address;
- addr->prefixlen = prefixlen;
- addr->netmask = netmask;
-
- r = route_new_dynamic(&rt);
- if (r < 0) {
- log_error("Could not allocate route");
- link_enter_failed(link);
- return;
- }
-
- rt->family = AF_INET;
- rt->in_addr.in = gateway;
-
- link->dhcp_address = addr;
- link->dhcp_route = rt;
- addr = NULL;
- rt = NULL;
-
- link_enter_set_addresses(link);
- }
-
- return;
-}
-
-static int link_acquire_conf(Link *link) {
- int r;
-
- assert(link);
- assert(link->network);
- assert(link->network->dhcp);
- assert(link->manager);
- assert(link->manager->event);
-
- if (!link->dhcp) {
- link->dhcp = sd_dhcp_client_new(link->manager->event);
- if (!link->dhcp)
- return -ENOMEM;
-
- r = sd_dhcp_client_set_index(link->dhcp, link->ifindex);
- if (r < 0)
- return r;
-
- r = sd_dhcp_client_set_mac(link->dhcp, &link->mac);
- if (r < 0)
- return r;
-
- r = sd_dhcp_client_set_callback(link->dhcp, dhcp_handler, link);
- if (r < 0)
- return r;
- }
-
- r = sd_dhcp_client_start(link->dhcp);
- if (r < 0)
- return r;
-
- return 0;
-}
-
int link_update(Link *link, sd_rtnl_message *m) {
unsigned flags;
int r;
assert(link);
- assert(link->network);
assert(m);
if (link->state == LINK_STATE_FAILED)
@@ -644,36 +684,5 @@ int link_update(Link *link, sd_rtnl_message *m) {
return r;
}
- if (link->flags & IFF_UP && !(flags & IFF_UP))
- log_info("%s: interface is down", link->ifname);
- else if (!(link->flags & IFF_UP) && flags & IFF_UP)
- log_info("%s: interface is up", link->ifname);
-
- if (link->flags & IFF_LOWER_UP && !(flags & IFF_LOWER_UP)) {
- log_info("%s: disconnected", link->ifname);
-
- if (link->network->dhcp) {
- r = sd_dhcp_client_stop(link->dhcp);
- if (r < 0) {
- link_enter_failed(link);
- return r;
- }
- }
- } else if (!(link->flags & IFF_LOWER_UP) && flags & IFF_LOWER_UP) {
- log_info("%s: connected", link->ifname);
-
- if (link->network->dhcp) {
- r = link_acquire_conf(link);
- if (r < 0) {
- link_enter_failed(link);
- return r;
- }
- }
- }
-
- link->flags = flags;
-
- log_debug("%s: updated link state", link->ifname);
-
- return 0;
+ return link_update_flags(link, flags);
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-18 09:11:59 +0000