tree-wide: prefer AF_xyz over PF_xyz

This really doesn't matter given that AF_xyz and PF_xyz are equivalent
in all ways, but we almost always use AF_xyz, hence stick to it
universally and convert the remaining PF_ to AF_

src/libsystemd-network/arp-util.c

@@ -76,7 +76,7 @@ int arp_network_bind_raw_socket(int ifindex, be32_t address, const struct ether_
 
         assert(ifindex > 0);
 
-        s = socket(PF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0);
+        s = socket(AF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0);
         if (s < 0)
                 return -errno;
 

src/libsystemd-network/lldp-network.c

@@ -47,7 +47,7 @@ int lldp_network_bind_raw_socket(int ifindex) {
 
         assert(ifindex > 0);
 
-        fd = socket(PF_PACKET, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK,
+        fd = socket(AF_PACKET, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK,
                     htobe16(ETHERTYPE_LLDP));
         if (fd < 0)
                 return -errno;

src/libsystemd/sd-netlink/rtnl-message.c

@@ -436,7 +436,7 @@ int sd_rtnl_message_new_neigh(sd_netlink *rtnl, sd_netlink_message **ret, uint16
         int r;
 
         assert_return(rtnl_message_type_is_neigh(nlmsg_type), -EINVAL);
-        assert_return(IN_SET(ndm_family, AF_UNSPEC, AF_INET, AF_INET6, PF_BRIDGE), -EINVAL);
+        assert_return(IN_SET(ndm_family, AF_UNSPEC, AF_INET, AF_INET6, AF_BRIDGE), -EINVAL);
         assert_return(ret, -EINVAL);
 
         r = message_new(rtnl, ret, nlmsg_type);

src/libsystemd/sd-netlink/test-netlink.c

@@ -21,7 +21,7 @@ static void test_message_link_bridge(sd_netlink *rtnl) {
         uint32_t cost;
 
         assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_NEWLINK, 1) >= 0);
-        assert_se(sd_rtnl_message_link_set_family(message, PF_BRIDGE) >= 0);
+        assert_se(sd_rtnl_message_link_set_family(message, AF_BRIDGE) >= 0);
         assert_se(sd_netlink_message_open_container(message, IFLA_PROTINFO) >= 0);
         assert_se(sd_netlink_message_append_u32(message, IFLA_BRPORT_COST, 10) >= 0);
         assert_se(sd_netlink_message_close_container(message) >= 0);

src/libsystemd/sd-resolve/sd-resolve.c

@@ -496,10 +496,10 @@ _public_ int sd_resolve_new(sd_resolve **ret) {
         for (i = 0; i < _FD_MAX; i++)
                 resolve->fds[i] = -1;
 
-        if (socketpair(PF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, resolve->fds + REQUEST_RECV_FD) < 0)
+        if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, resolve->fds + REQUEST_RECV_FD) < 0)
                 return -errno;
 
-        if (socketpair(PF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, resolve->fds + RESPONSE_RECV_FD) < 0)
+        if (socketpair(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0, resolve->fds + RESPONSE_RECV_FD) < 0)
                 return -errno;
 
         for (i = 0; i < _FD_MAX; i++)

src/libsystemd/sd-resolve/test-resolve.c

@@ -56,7 +56,7 @@ int main(int argc, char *argv[]) {
         int r;
 
         struct addrinfo hints = {
-                .ai_family = PF_UNSPEC,
+                .ai_family = AF_UNSPEC,
                 .ai_socktype = SOCK_STREAM,
                 .ai_flags = AI_CANONNAME
         };

src/network/netdev/bridge.c

@@ -192,7 +192,7 @@ int link_set_bridge(Link *link) {
         if (r < 0)
                 return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");
 
-        r = sd_rtnl_message_link_set_family(req, PF_BRIDGE);
+        r = sd_rtnl_message_link_set_family(req, AF_BRIDGE);
         if (r < 0)
                 return log_link_error_errno(link, r, "Could not set message family: %m");
 

src/network/networkd-brvlan.c

@@ -169,7 +169,7 @@ int br_vlan_configure(Link *link, uint16_t pvid, uint32_t *br_vid_bitmap, uint32
         if (r < 0)
                 return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");
 
-        r = sd_rtnl_message_link_set_family(req, PF_BRIDGE);
+        r = sd_rtnl_message_link_set_family(req, AF_BRIDGE);
         if (r < 0)
                 return log_link_error_errno(link, r, "Could not set message family: %m");
 

src/network/networkd-fdb.c

@@ -124,7 +124,7 @@ int fdb_entry_configure(Link *link, FdbEntry *fdb_entry) {
         assert(fdb_entry);
 
         /* create new RTM message */
-        r = sd_rtnl_message_new_neigh(link->manager->rtnl, &req, RTM_NEWNEIGH, link->ifindex, PF_BRIDGE);
+        r = sd_rtnl_message_new_neigh(link->manager->rtnl, &req, RTM_NEWNEIGH, link->ifindex, AF_BRIDGE);
         if (r < 0)
                 return log_link_error_errno(link, r, "Could not create RTM_NEWNEIGH message: %m");
 

src/network/networkd-lldp-tx.c

@@ -267,7 +267,7 @@ static int lldp_send_packet(
 
         memcpy(sa.ll.sll_addr, address, ETH_ALEN);
 
-        fd = socket(PF_PACKET, SOCK_RAW|SOCK_CLOEXEC, IPPROTO_RAW);
+        fd = socket(AF_PACKET, SOCK_RAW|SOCK_CLOEXEC, IPPROTO_RAW);
         if (fd < 0)
                 return -errno;