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sd-dhcp-server: bind to raw socket for sending

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We would like to use the UDP socket, but we cannot as we need to specify
the MAC address manually.
This commit is contained in:
Tom Gundersen 2014-05-24 23:03:49 +02:00
parent 816e2e7af9
commit 8de4a226c7
2 changed files with 12 additions and 0 deletions
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1
src/libsystemd-network/dhcp-server-internal.h
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@ -36,6 +36,7 @@ struct sd_dhcp_server {
int event_priority;
sd_event_source *receive_message;
int fd;
int fd_raw;
int index;
};

11
src/libsystemd-network/sd-dhcp-server.c
View File

@ -58,6 +58,7 @@ int sd_dhcp_server_new(sd_dhcp_server **ret, int ifindex) {
return -ENOMEM;
server->n_ref = REFCNT_INIT;
server->fd_raw = -1;
server->fd = -1;
server->index = ifindex;
@ -106,6 +107,7 @@ int sd_dhcp_server_stop(sd_dhcp_server *server) {
server->receive_message =
sd_event_source_unref(server->receive_message);
server->fd_raw = safe_close(server->fd_raw);
server->fd = safe_close(server->fd);
log_dhcp_server(server, "STOPPED");
@ -277,8 +279,17 @@ int sd_dhcp_server_start(sd_dhcp_server *server) {
assert_return(server, -EINVAL);
assert_return(server->event, -EINVAL);
assert_return(!server->receive_message, -EBUSY);
assert_return(server->fd_raw == -1, -EBUSY);
assert_return(server->fd == -1, -EBUSY);
r = socket(AF_PACKET, SOCK_DGRAM | SOCK_NONBLOCK, 0);
if (r < 0) {
r = -errno;
sd_dhcp_server_stop(server);
return r;
}
server->fd_raw = r;
r = dhcp_network_bind_udp_socket(INADDR_ANY, DHCP_PORT_SERVER);
if (r < 0) {
sd_dhcp_server_stop(server);