networkd: address - merge _change() into _configure()

These functions are almost entirely the same, so avoid duplication.

6 files changed, 14 insertions, 80 deletions

diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c
index 98ff027536..7c74a0309d 100644
--- a/src/network/networkd-address.c
+++ b/src/network/networkd-address.c
@@ -377,74 +377,6 @@ int address_remove(Address *address, Link *link,
         return 0;
 }
 
-int address_change(Address *address, Link *link,
-                   sd_netlink_message_handler_t callback) {
-        _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL;
-        int r;
-
-        assert(address);
-        assert(address->family == AF_INET || address->family == AF_INET6);
-        assert(link->ifindex > 0);
-        assert(link->manager);
-        assert(link->manager->rtnl);
-
-        r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &req,
-                                     link->ifindex, address->family);
-        if (r < 0)
-                return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m");
-
-        r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen);
-        if (r < 0)
-                return log_error_errno(r, "Could not set prefixlen: %m");
-
-        address->flags |= IFA_F_PERMANENT;
-
-        r = sd_rtnl_message_addr_set_flags(req, address->flags & 0xff);
-        if (r < 0)
-                return log_error_errno(r, "Could not set flags: %m");
-
-        if (address->flags & ~0xff && link->rtnl_extended_attrs) {
-                r = sd_netlink_message_append_u32(req, IFA_FLAGS, address->flags);
-                if (r < 0)
-                        return log_error_errno(r, "Could not set extended flags: %m");
-        }
-
-        r = sd_rtnl_message_addr_set_scope(req, address->scope);
-        if (r < 0)
-                return log_error_errno(r, "Could not set scope: %m");
-
-        if (address->family == AF_INET)
-                r = sd_netlink_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
-        else if (address->family == AF_INET6)
-                r = sd_netlink_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
-        if (r < 0)
-                return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m");
-
-        if (address->family == AF_INET) {
-                r = sd_netlink_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast);
-                if (r < 0)
-                        return log_error_errno(r, "Could not append IFA_BROADCAST attribute: %m");
-        }
-
-        if (address->label) {
-                r = sd_netlink_message_append_string(req, IFA_LABEL, address->label);
-                if (r < 0)
-                        return log_error_errno(r, "Could not append IFA_LABEL attribute: %m");
-        }
-
-        r = sd_netlink_message_append_cache_info(req, IFA_CACHEINFO, &address->cinfo);
-        if (r < 0)
-                return log_error_errno(r, "Could not append IFA_CACHEINFO attribute: %m");
-
-        r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
-        if (r < 0)
-                return log_error_errno(r, "Could not send rtnetlink message: %m");
-
-        link_ref(link);
-
-        return 0;
-}
-
 static int address_acquire(Link *link, Address *original, Address **ret) {
         union in_addr_union in_addr = {};
         struct in_addr broadcast = {};
@@ -504,8 +436,7 @@ static int address_acquire(Link *link, Address *original, Address **ret) {
         return 0;
 }
 
-int address_configure(Address *address, Link *link,
-                      sd_netlink_message_handler_t callback) {
+int address_configure(Address *address, Link *link, sd_netlink_message_handler_t callback, bool update) {
         _cleanup_netlink_message_unref_ sd_netlink_message *req = NULL;
         int r;
 
@@ -520,8 +451,12 @@ int address_configure(Address *address, Link *link,
         if (r < 0)
                 return r;
 
-        r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_NEWADDR,
-                                     link->ifindex, address->family);
+        if (update)
+                r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &req,
+                                                    link->ifindex, address->family);
+        else
+                r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_NEWADDR,
+                                             link->ifindex, address->family);
         if (r < 0)
                 return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m");
 
diff --git a/src/network/networkd-address.h b/src/network/networkd-address.h
index 07a7ad2026..cb29acc7be 100644
--- a/src/network/networkd-address.h
+++ b/src/network/networkd-address.h
@@ -64,8 +64,7 @@ int address_add(Link *link, int family, const union in_addr_union *in_addr, unsi
 int address_get(Link *link, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret);
 int address_update(Address *address, unsigned char flags, unsigned char scope, struct ifa_cacheinfo *cinfo);
 int address_drop(Address *address);
-int address_configure(Address *address, Link *link, sd_netlink_message_handler_t callback);
-int address_change(Address *address, Link *link, sd_netlink_message_handler_t callback);
+int address_configure(Address *address, Link *link, sd_netlink_message_handler_t callback, bool update);
 int address_remove(Address *address, Link *link, sd_netlink_message_handler_t callback);
 bool address_equal(Address *a1, Address *a2);
 bool address_is_ready(const Address *a);
diff --git a/src/network/networkd-dhcp4.c b/src/network/networkd-dhcp4.c
index 5c91d9609f..6ba16581f8 100644
--- a/src/network/networkd-dhcp4.c
+++ b/src/network/networkd-dhcp4.c
@@ -299,9 +299,9 @@ static int dhcp4_update_address(Link *link,
         addr->prefixlen = prefixlen;
         addr->broadcast.s_addr = address->s_addr | ~netmask->s_addr;
 
-        /* use change rather than configure so that we will update the
-         * lifetime of an existing address if it has already been configured */
-        r = address_change(addr, link, &dhcp4_address_handler);
+        /* allow reusing an existing address and simply update its lifetime
+         * in case it already exists */
+        r = address_configure(addr, link, &dhcp4_address_handler, true);
         if (r < 0)
                 return r;
 
diff --git a/src/network/networkd-dhcp6.c b/src/network/networkd-dhcp6.c
index 95cdb80b0a..fb93e6606e 100644
--- a/src/network/networkd-dhcp6.c
+++ b/src/network/networkd-dhcp6.c
@@ -87,7 +87,7 @@ static int dhcp6_address_change(Link *link, struct in6_addr *ip6_addr,
                       SD_ICMP6_ND_ADDRESS_FORMAT_VAL(addr->in_addr.in6),
                       addr->prefixlen, lifetime_preferred, lifetime_valid);
 
-        r = address_change(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");
 
diff --git a/src/network/networkd-ipv4ll.c b/src/network/networkd-ipv4ll.c
index 752c09d6b1..26397b273f 100644
--- a/src/network/networkd-ipv4ll.c
+++ b/src/network/networkd-ipv4ll.c
@@ -143,7 +143,7 @@ static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) {
         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);
+        r = address_configure(ll_addr, link, ipv4ll_address_handler, false);
         if (r < 0)
                 return r;
 
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 9661704f52..1ac76c4255 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -743,7 +743,7 @@ static int link_enter_set_addresses(Link *link) {
         link_set_state(link, LINK_STATE_SETTING_ADDRESSES);
 
         LIST_FOREACH(addresses, ad, link->network->static_addresses) {
-                r = address_configure(ad, link, &address_handler);
+                r = address_configure(ad, link, &address_handler, false);
                 if (r < 0) {
                         log_link_warning_errno(link, r, "Could not set addresses: %m");
                         link_enter_failed(link);