diff options
Diffstat (limited to 'libdhcp/dhcp_client.c')
| -rw-r--r-- | libdhcp/dhcp_client.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/libdhcp/dhcp_client.c b/libdhcp/dhcp_client.c index f526190..ea6ed28 100644 --- a/libdhcp/dhcp_client.c +++ b/libdhcp/dhcp_client.c @@ -167,6 +167,18 @@ struct dhcp_client { }; +static const char *state_strs[] = { + [STATE_INIT] = "INIT", + [STATE_SELECTING] = "SELECTING", + [STATE_REQUESTING] = "REQUESTING", + [STATE_BOUND] = "BOUND", + [STATE_RENEWING] = "RENEWING", + [STATE_REBINDING] = "REBINDING", + + [STATE_INIT_REBOOT] = "INIT_REBOOT", + [STATE_REBOOTING] = "REBOOTING", +}; + /** * For convenience in switch blocks, a list of the states that, when * msgtyp==DHCP_MSGTYP_REQUEST, dhcp_client_send() has assert()ed the state is @@ -449,6 +461,7 @@ static bool dhcp_client_send(struct dhcp_client *client, uint8_t msgtyp, const c /**********************************************************************\ * Send * \**********************************************************************/ + debugf("state %s: sending DHCP %s", state_strs[client->state], dhcp_msgtyp_str(msgtyp)); ssize_t r = VCALL(client->sock, sendto, scratch_msg, DHCP_MSG_BASE_SIZE + optlen, client_broadcasts ? net_ip4_addr_broadcast : client->lease_server_id, DHCP_PORT_SERVER); if (r < 0) { @@ -692,6 +705,7 @@ static ssize_t dhcp_client_recv(struct dhcp_client *client, struct dhcp_recv_msg static bool dhcp_check_conflict(implements_net_packet_conn *sock, struct net_ip4_addr addr) { assert(sock); ssize_t v = VCALL(sock, sendto, "CHECK_IP_CONFLICT", 17, addr, 5000); + debugf("check_ip_conflict => %zd", v); return v != -NET_EARP_TIMEOUT; } @@ -726,12 +740,17 @@ static void dhcp_client_take_lease(struct dhcp_client *client, struct dhcp_recv_ client->lease_time_ns_t2 = (dur_ns_t2 == DHCP_INFINITY * NS_PER_S) ? 0 : client->time_ns_init + dur_ns_t2; client->lease_time_ns_end = (dur_ns_end == DHCP_INFINITY * NS_PER_S) ? 0 : client->time_ns_init + dur_ns_end; - if (ifup) + if (ifup) { + infof("applying configuration to "PRI_net_eth_addr, ARG_net_eth_addr(client->self_eth_addr)); + infof(":: addr = "PRI_net_ip4_addr, ARG_net_ip4_addr(client->lease_client_addr)); + infof(":: gateway_addr = "PRI_net_ip4_addr, ARG_net_ip4_addr(client->lease_auxdata.gateway_addr)); + infof(":: subnet_mask = "PRI_net_ip4_addr, ARG_net_ip4_addr(client->lease_auxdata.subnet_mask)); VCALL(client->iface, ifup, (struct net_iface_config){ .addr = client->lease_client_addr, .gateway_addr = client->lease_auxdata.gateway_addr, .subnet_mask = client->lease_auxdata.subnet_mask, }); + } } static void dhcp_client_setstate(struct dhcp_client *client, @@ -749,6 +768,7 @@ static void dhcp_client_setstate(struct dhcp_client *client, /* State transition diagram: https://datatracker.ietf.org/doc/html/rfc2131#page-35 */ for (;;) { + debugf("loop: state=%s", state_strs[client->state]); switch (client->state) { case STATE_INIT: client->xid = rand_uint63n(UINT32_MAX); @@ -787,6 +807,8 @@ static void dhcp_client_setstate(struct dhcp_client *client, break; case DHCP_MSGTYP_ACK: if (dhcp_check_conflict(client->sock, client->lease_client_addr)) { + debugf("IP "PRI_net_ip4_addr" is already in use", + ARG_net_ip4_addr(client->lease_client_addr)); dhcp_client_setstate(client, STATE_INIT, DHCP_MSGTYP_DECLINE, "IP is already in use", scratch_msg); } else { dhcp_client_take_lease(client, scratch_msg, true); |