diff options
Diffstat (limited to 'src/libsystemd-network/sd-dhcp-server.c')
| -rw-r--r-- | src/libsystemd-network/sd-dhcp-server.c | 47 |
1 files changed, 33 insertions, 14 deletions
diff --git a/src/libsystemd-network/sd-dhcp-server.c b/src/libsystemd-network/sd-dhcp-server.c index e11462e6ac..5e8b4e4823 100644 --- a/src/libsystemd-network/sd-dhcp-server.c +++ b/src/libsystemd-network/sd-dhcp-server.c @@ -208,8 +208,7 @@ int sd_dhcp_server_new(sd_dhcp_server **ret, int ifindex) { return 0; } -int sd_dhcp_server_attach_event(sd_dhcp_server *server, sd_event *event, - int priority) { +int sd_dhcp_server_attach_event(sd_dhcp_server *server, sd_event *event, int64_t priority) { int r; assert_return(server, -EINVAL); @@ -281,10 +280,11 @@ static int dhcp_server_send_unicast_raw(sd_dhcp_server *server, } static int dhcp_server_send_udp(sd_dhcp_server *server, be32_t destination, + uint16_t destination_port, DHCPMessage *message, size_t len) { union sockaddr_union dest = { .in.sin_family = AF_INET, - .in.sin_port = htobe16(DHCP_PORT_CLIENT), + .in.sin_port = htobe16(destination_port), .in.sin_addr.s_addr = destination, }; struct iovec iov = { @@ -343,6 +343,7 @@ int dhcp_server_send_packet(sd_dhcp_server *server, DHCPRequest *req, DHCPPacket *packet, int type, size_t optoffset) { be32_t destination = INADDR_ANY; + uint16_t destination_port = DHCP_PORT_CLIENT; int r; assert(server); @@ -387,17 +388,19 @@ int dhcp_server_send_packet(sd_dhcp_server *server, */ if (req->message->giaddr) { destination = req->message->giaddr; + destination_port = DHCP_PORT_SERVER; if (type == DHCP_NAK) packet->dhcp.flags = htobe16(0x8000); } else if (req->message->ciaddr && type != DHCP_NAK) destination = req->message->ciaddr; if (destination != INADDR_ANY) - return dhcp_server_send_udp(server, destination, &packet->dhcp, + return dhcp_server_send_udp(server, destination, + destination_port, &packet->dhcp, sizeof(DHCPMessage) + optoffset); else if (requested_broadcast(req) || type == DHCP_NAK) return dhcp_server_send_udp(server, INADDR_BROADCAST, - &packet->dhcp, + destination_port, &packet->dhcp, sizeof(DHCPMessage) + optoffset); else /* we cannot send UDP packet to specific MAC address when the @@ -465,10 +468,12 @@ static int server_send_offer(sd_dhcp_server *server, DHCPRequest *req, if (r < 0) return r; - r = dhcp_option_append(&packet->dhcp, req->max_optlen, &offset, 0, - SD_DHCP_OPTION_ROUTER, 4, &server->address); - if (r < 0) - return r; + if (server->emit_router) { + r = dhcp_option_append(&packet->dhcp, req->max_optlen, &offset, 0, + SD_DHCP_OPTION_ROUTER, 4, &server->address); + if (r < 0) + return r; + } r = dhcp_server_send_packet(server, req, packet, DHCP_OFFER, offset); if (r < 0) @@ -502,10 +507,12 @@ static int server_send_ack(sd_dhcp_server *server, DHCPRequest *req, if (r < 0) return r; - r = dhcp_option_append(&packet->dhcp, req->max_optlen, &offset, 0, - SD_DHCP_OPTION_ROUTER, 4, &server->address); - if (r < 0) - return r; + if (server->emit_router) { + r = dhcp_option_append(&packet->dhcp, req->max_optlen, &offset, 0, + SD_DHCP_OPTION_ROUTER, 4, &server->address); + if (r < 0) + return r; + } if (server->n_dns > 0) { r = dhcp_option_append( @@ -580,7 +587,8 @@ static int server_send_forcerenew(sd_dhcp_server *server, be32_t address, memcpy(&packet->dhcp.chaddr, chaddr, ETH_ALEN); - r = dhcp_server_send_udp(server, address, &packet->dhcp, + r = dhcp_server_send_udp(server, address, DHCP_PORT_CLIENT, + &packet->dhcp, sizeof(DHCPMessage) + optoffset); if (r < 0) return r; @@ -1154,3 +1162,14 @@ int sd_dhcp_server_set_ntp(sd_dhcp_server *server, const struct in_addr ntp[], u return 1; } + +int sd_dhcp_server_set_emit_router(sd_dhcp_server *server, int enabled) { + assert_return(server, -EINVAL); + + if (enabled == server->emit_router) + return 0; + + server->emit_router = enabled; + + return 1; +} |