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pf_cmina.c
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/*********************************************************************
* _ _ _
* _ __ | |_ _ | | __ _ | |__ ___
* | '__|| __|(_)| | / _` || '_ \ / __|
* | | | |_ _ | || (_| || |_) |\__ \
* |_| \__|(_)|_| \__,_||_.__/ |___/
*
* www.rt-labs.com
* Copyright 2018 rt-labs AB, Sweden.
*
* This software is dual-licensed under GPLv3 and a commercial
* license. See the file LICENSE.md distributed with this software for
* full license information.
********************************************************************/
/**
* @file
* @brief Implements the Context Management Ip and Name Assignment protocol
* machine (CMINA)
*
* Handles assignment of station name and IP address.
* Manages sending DCP hello requests.
*
* Resets the communication stack and user application.
*
* States are SETUP, SET_NAME, SET_IP and W_CONNECT.
*
* Implements setters and getters for net->cmina_current_dcp_ase, so other
* parts of the stack don't need to know these internal details.
*
*/
#ifdef UNIT_TEST
#define pnal_get_port_statistics mock_pnal_get_port_statistics
#define pnal_set_ip_suite mock_pnal_set_ip_suite
#endif
#include <string.h>
#include <ctype.h>
#include <inttypes.h>
#include "pf_includes.h"
/**
* @internal
* Trigger sending a DCP HELLO message.
*
* This is a callback for the scheduler. Arguments should fulfill
* pf_scheduler_timeout_ftn_t
*
* If this was not the last requested HELLO message then re-schedule another
* call after 1 s.
*
* @param net InOut: The p-net stack instance
* @param arg In: Not used.
* @param current_time In: Not used.
*/
static void pf_cmina_send_hello (pnet_t * net, void * arg, uint32_t current_time)
{
if (
(net->cmina_state == PF_CMINA_STATE_W_CONNECT) &&
(net->cmina_hello_count > 0))
{
(void)pf_dcp_hello_req (net);
/* Reschedule */
net->cmina_hello_count--;
(void)pf_scheduler_add (
net,
PF_CMINA_FS_HELLO_INTERVAL * 1000,
pf_cmina_send_hello,
NULL,
&net->cmina_hello_timeout);
}
else
{
pf_scheduler_reset_handle (&net->cmina_hello_timeout);
net->cmina_hello_count = 0;
}
}
void pf_cmina_save_ase (pnet_t * net, pf_cmina_dcp_ase_t * p_ase)
{
pf_cmina_dcp_ase_t ase_nvm;
pf_cmina_dcp_ase_t temporary_buffer;
char ip_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
char netmask_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
char gateway_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
const char * p_file_directory = pf_cmina_get_file_directory (net);
int res = 0;
/* This operation is called from the background worker.
* Ase data is protected by a mutex.
*/
os_mutex_lock (net->cmina_mutex);
ase_nvm = *p_ase;
os_mutex_unlock (net->cmina_mutex);
pf_cmina_ip_to_string (ase_nvm.full_ip_suite.ip_suite.ip_addr, ip_string);
pf_cmina_ip_to_string (
ase_nvm.full_ip_suite.ip_suite.ip_mask,
netmask_string);
pf_cmina_ip_to_string (
ase_nvm.full_ip_suite.ip_suite.ip_gateway,
gateway_string);
res = pf_file_save_if_modified (
p_file_directory,
PF_FILENAME_IP,
p_ase,
&temporary_buffer,
sizeof (pf_cmina_dcp_ase_t));
switch (res)
{
case 2:
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): First nvm saving of IP settings. "
"IP: %s Netmask: %s Gateway: %s Station name: \"%s\"\n",
__LINE__,
ip_string,
netmask_string,
gateway_string,
ase_nvm.station_name);
break;
case 1:
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): Updating nvm stored IP settings. "
"IP: %s Netmask: %s Gateway: %s Station name: \"%s\"\n",
__LINE__,
ip_string,
netmask_string,
gateway_string,
ase_nvm.station_name);
break;
case 0:
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): No storing of nvm IP settings (no changes). "
"IP: %s Netmask: %s Gateway: %s Station name: \"%s\"\n",
__LINE__,
ip_string,
netmask_string,
gateway_string,
ase_nvm.station_name);
break;
default:
case -1:
LOG_ERROR (
PF_DCP_LOG,
"CMINA(%d): Failed to store nvm IP settings.\n",
__LINE__);
break;
}
}
int pf_cmina_set_default_cfg (pnet_t * net, uint16_t reset_mode)
{
int ret = -1;
const pnet_cfg_t * p_cfg = NULL;
uint16_t ix;
bool reset_user_application = false;
pf_cmina_dcp_ase_t file_ase;
char ip_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
char netmask_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
char gateway_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
uint32_t ip = 0;
uint32_t netmask = 0;
uint32_t gateway = 0;
const char * p_file_directory = pf_cmina_get_file_directory (net);
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): Setting default configuration. Reset mode: %u\n",
__LINE__,
reset_mode);
pf_fspm_get_default_cfg (net, &p_cfg);
if (p_cfg != NULL)
{
net->cmina_nonvolatile_dcp_ase.device_initiative = p_cfg->send_hello ? 1
: 0;
net->cmina_nonvolatile_dcp_ase.device_role = 1; /* Means: PNIO Device */
memcpy (
net->cmina_nonvolatile_dcp_ase.mac_address.addr,
net->pf_interface.main_port.mac_address.addr,
sizeof (pnet_ethaddr_t));
strcpy (net->cmina_nonvolatile_dcp_ase.port_name, ""); /* Terminated */
net->cmina_nonvolatile_dcp_ase.device_id = p_cfg->device_id;
net->cmina_nonvolatile_dcp_ase.oem_device_id = p_cfg->oem_device_id;
net->cmina_nonvolatile_dcp_ase.dhcp_enable =
p_cfg->if_cfg.ip_cfg.dhcp_enable;
if (reset_mode == 0) /* Power-on reset */
{
/* Read from file (nvm) */
if (
pf_file_load (
p_file_directory,
PF_FILENAME_IP,
&file_ase,
sizeof (file_ase)) == 0)
{
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): Did read IP parameters from nvm\n",
__LINE__);
ip = file_ase.full_ip_suite.ip_suite.ip_addr;
netmask = file_ase.full_ip_suite.ip_suite.ip_mask;
gateway = file_ase.full_ip_suite.ip_suite.ip_gateway;
memcpy (
net->cmina_nonvolatile_dcp_ase.station_name,
file_ase.station_name,
sizeof (net->cmina_nonvolatile_dcp_ase.station_name));
net->cmina_nonvolatile_dcp_ase.station_name
[sizeof (net->cmina_nonvolatile_dcp_ase.station_name) - 1] =
'\0';
}
else
{
/* Use values for IP and station name from user configuration */
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): Could not yet read IP parameters from nvm. Use "
"values from user configuration.\n",
__LINE__);
PNAL_IP4_ADDR_TO_U32 (
ip,
p_cfg->if_cfg.ip_cfg.ip_addr.a,
p_cfg->if_cfg.ip_cfg.ip_addr.b,
p_cfg->if_cfg.ip_cfg.ip_addr.c,
p_cfg->if_cfg.ip_cfg.ip_addr.d);
PNAL_IP4_ADDR_TO_U32 (
netmask,
p_cfg->if_cfg.ip_cfg.ip_mask.a,
p_cfg->if_cfg.ip_cfg.ip_mask.b,
p_cfg->if_cfg.ip_cfg.ip_mask.c,
p_cfg->if_cfg.ip_cfg.ip_mask.d);
PNAL_IP4_ADDR_TO_U32 (
gateway,
p_cfg->if_cfg.ip_cfg.ip_gateway.a,
p_cfg->if_cfg.ip_cfg.ip_gateway.b,
p_cfg->if_cfg.ip_cfg.ip_gateway.c,
p_cfg->if_cfg.ip_cfg.ip_gateway.d);
memcpy (
net->cmina_nonvolatile_dcp_ase.station_name,
p_cfg->station_name,
sizeof (net->cmina_nonvolatile_dcp_ase.station_name));
net->cmina_nonvolatile_dcp_ase.station_name
[sizeof (net->cmina_nonvolatile_dcp_ase.station_name) - 1] =
'\0';
}
net->cmina_nonvolatile_dcp_ase.full_ip_suite.ip_suite.ip_addr = ip;
net->cmina_nonvolatile_dcp_ase.full_ip_suite.ip_suite.ip_mask =
netmask;
net->cmina_nonvolatile_dcp_ase.full_ip_suite.ip_suite.ip_gateway =
gateway;
pf_cmina_ip_to_string (ip, ip_string);
pf_cmina_ip_to_string (netmask, netmask_string);
pf_cmina_ip_to_string (gateway, gateway_string);
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): Using "
"IP: %s Netmask: %s Gateway: %s Station name: \"%s\"\n",
__LINE__,
ip_string,
netmask_string,
gateway_string,
net->cmina_nonvolatile_dcp_ase.station_name);
}
if (reset_mode == 1 || reset_mode >= 3)
{
/* Reset application parameters */
reset_user_application = true;
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): Reset application parameters.\n",
__LINE__);
/* Reset I&M data */
(void)pf_fspm_clear_im_data (net);
#if PNET_OPTION_SNMP
/* According to section 8.4 "Behavior to ResetToFactory" in
* "Test case specification: Behavior" the MIB data should be reset
* in all supported reset modes. This seems to contradict
* PN-AL-Services ch. 6.3.11.3.2.
*/
pf_snmp_data_clear (net);
#endif
}
if (reset_mode == 2 || reset_mode >= 3)
{
/* Reset communication parameters */
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): Reset communication parameters.\n",
__LINE__);
/* Reset IP suite */
net->cmina_nonvolatile_dcp_ase.full_ip_suite.ip_suite.ip_addr = 0;
net->cmina_nonvolatile_dcp_ase.full_ip_suite.ip_suite.ip_mask = 0;
net->cmina_nonvolatile_dcp_ase.full_ip_suite.ip_suite.ip_gateway = 0;
/* Clear name of station */
memset (
net->cmina_nonvolatile_dcp_ase.station_name,
0,
sizeof (net->cmina_nonvolatile_dcp_ase.station_name));
pf_file_clear (p_file_directory, PF_FILENAME_IP);
pf_file_clear (p_file_directory, PF_FILENAME_DIAGNOSTICS);
#if PNET_OPTION_SNMP
pf_snmp_data_clear (net);
#endif
pf_pdport_reset_all (net);
}
if (reset_mode > 0)
{
/* User callback */
pf_fspm_reset_ind (net, reset_user_application, reset_mode);
}
net->cmina_nonvolatile_dcp_ase.standard_gw_value = 0; /* Means: OwnIP is
treated as no
gateway */
net->cmina_nonvolatile_dcp_ase.instance_id.high = 0;
net->cmina_nonvolatile_dcp_ase.instance_id.low = 0;
strncpy (
net->cmina_nonvolatile_dcp_ase.product_name,
p_cfg->product_name,
sizeof (net->cmina_nonvolatile_dcp_ase.product_name));
net->cmina_nonvolatile_dcp_ase
.product_name[sizeof (net->cmina_nonvolatile_dcp_ase.product_name) - 1] =
'\0';
/* Remove trailing spaces */
ix = (uint16_t)strlen (net->cmina_nonvolatile_dcp_ase.product_name);
while ((ix > 1) &&
(net->cmina_nonvolatile_dcp_ase.product_name[ix] == ' '))
{
ix--;
}
net->cmina_nonvolatile_dcp_ase.product_name[ix] = '\0';
(void)pf_bg_worker_start_job (net, PF_BGJOB_SAVE_ASE_NVM_DATA);
/* Init the current communication values */
net->cmina_current_dcp_ase = net->cmina_nonvolatile_dcp_ase;
ret = 0;
}
return ret;
}
void pf_cmina_dcp_set_commit (pnet_t * net)
{
int res = 0;
char ip_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
char netmask_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
char gateway_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
bool permanent = true;
if (net->cmina_commit_ip_suite == true)
{
if (
memcmp (
&net->cmina_current_dcp_ase.full_ip_suite.ip_suite,
&net->cmina_nonvolatile_dcp_ase.full_ip_suite.ip_suite,
sizeof (pf_ip_suite_t)) != 0)
{
permanent = false;
}
else if (
strcmp (
net->cmina_current_dcp_ase.station_name,
net->cmina_nonvolatile_dcp_ase.station_name) != 0)
{
permanent = false;
}
pf_cmina_ip_to_string (
net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_addr,
ip_string);
pf_cmina_ip_to_string (
net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_mask,
netmask_string);
pf_cmina_ip_to_string (
net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_gateway,
gateway_string);
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): Setting IP: %s Netmask: %s Gateway: %s Station name: "
"\"%s\" "
"Permanent: %u\n",
__LINE__,
ip_string,
netmask_string,
gateway_string,
net->cmina_current_dcp_ase.station_name,
permanent);
net->cmina_commit_ip_suite = false;
res = pnal_set_ip_suite (
net->pf_interface.main_port.name,
&net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_addr,
&net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_mask,
&net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_gateway,
net->cmina_current_dcp_ase.station_name,
permanent);
if (res != 0)
{
LOG_ERROR (
PF_DCP_LOG,
"CMINA(%d): Failed to set network parameters\n",
__LINE__);
}
}
}
int pf_cmina_init (pnet_t * net)
{
int ret = 0;
net->cmina_mutex = os_mutex_create();
net->cmina_hello_count = 0;
pf_scheduler_init_handle (&net->cmina_hello_timeout, "hello");
net->cmina_error_decode = 0;
net->cmina_error_code_1 = 0;
net->cmina_commit_ip_suite = false;
net->cmina_state = PF_CMINA_STATE_SETUP;
/* Collect the DCP ASE database */
memset (
&net->cmina_nonvolatile_dcp_ase,
0,
sizeof (net->cmina_nonvolatile_dcp_ase));
(void)pf_cmina_set_default_cfg (net, 0); /* Populates
net->cmina_current_dcp_ase and
net->cmina_nonvolatile_dcp_ase */
if (strlen (net->cmina_current_dcp_ase.station_name) == 0)
{
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): No station name available. Will not send any HELLO "
"messages.\n",
__LINE__);
if (net->cmina_current_dcp_ase.dhcp_enable == true)
{
/* Case 4 in Profinet 2.4 Table 1096 */
/* No station name, DHCP enabled */
/* ToDo: Send DHCP discover request */
}
else if (
(net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_addr == 0) &&
(net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_mask == 0) &&
(net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_gateway == 0))
{
/* Case 3 in Profinet 2.4 Table 1096 */
/* No station name, no DHCP enabled, no IP address */
/* Ignore - Expect IP to be set by DCP later */
net->cmina_commit_ip_suite = true;
}
else
{
/* Case 3 in Profinet 2.4 Table 1096 */
/* No station name, no DHCP enabled, has IP address */
/* Start IP */
net->cmina_commit_ip_suite = true;
}
net->cmina_state = PF_CMINA_STATE_SET_NAME;
}
else
{
if (
(net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_addr == 0) &&
(net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_mask == 0) &&
(net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_gateway == 0))
{
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): No IP address available. Will not send any HELLO "
"messages.\n",
__LINE__);
if (net->cmina_current_dcp_ase.dhcp_enable == true)
{
/* Case 4 in Profinet 2.4 Table 1096 */
/* Has station name, DHCP enabled, no IP address */
/* ToDo: Send DHCP discover request */
}
else
{
/* Case 3 in Profinet 2.4 Table 1096 */
/* Has station name, DHCP not enabled, no IP address */
/* Ignore - Expect station name and IP to be set by DCP later */
net->cmina_commit_ip_suite = true;
}
net->cmina_state = PF_CMINA_STATE_SET_IP;
}
else
{
/* Case 2 in Profinet 2.4 Table 1096 */
/* Has station name, has IP address */
/* Start IP */
net->cmina_commit_ip_suite = true;
if (net->cmina_current_dcp_ase.device_initiative == 1)
{
net->cmina_hello_count = PF_CMINA_FS_HELLO_RETRY;
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): Start sending %u HELLO messages.\n",
__LINE__,
net->cmina_hello_count);
/* Send first HELLO now! */
(void)pf_scheduler_add (
net,
0,
pf_cmina_send_hello,
NULL,
&net->cmina_hello_timeout);
}
else
{
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): Sending of HELLO messages is disabled in "
"configuration.\n",
__LINE__);
}
net->cmina_state = PF_CMINA_STATE_W_CONNECT;
}
}
/* Change IP address if necessary */
pf_cmina_dcp_set_commit (net);
return ret;
}
/**
* Abort active ARs with error code
* @param net InOut: The p-net stack instance
* @param err_code In: Reason ARs are aborted
* return Number of aborted ARs
*/
static int pf_cmina_abort_active_ars (pnet_t * net, uint8_t err_code)
{
int ix = 0;
pf_ar_t * p_ar = NULL;
int nbr_of_aborted_ars = 0;
for (ix = 0; ix < PNET_MAX_AR; ix++)
{
p_ar = pf_ar_find_by_index (net, ix);
if ((p_ar != NULL) && (p_ar->in_use == true))
{
p_ar->err_cls = PNET_ERROR_CODE_1_RTA_ERR_CLS_PROTOCOL;
p_ar->err_code = err_code;
pf_cmdev_state_ind (net, p_ar, PNET_EVENT_ABORT);
nbr_of_aborted_ars++;
}
}
return nbr_of_aborted_ars;
}
/**
* Count number of active ARs
* @param net InOut: The p-net stack instance
* return Number of active ARs
*/
int pf_cmina_nbr_of_active_ars (pnet_t * net)
{
int ix = 0;
pf_ar_t * p_ar = NULL;
int nbr_of_active_ars = 0;
for (ix = 0; ix < PNET_MAX_AR; ix++)
{
p_ar = pf_ar_find_by_index (net, ix);
if ((p_ar != NULL) && (p_ar->in_use == true))
{
nbr_of_active_ars++;
}
}
return nbr_of_active_ars;
}
int pf_cmina_dcp_set_ind (
pnet_t * net,
uint8_t opt,
uint8_t sub,
uint16_t block_qualifier,
uint16_t value_length,
const uint8_t * p_value,
uint8_t * p_block_error)
{
int ret = -1;
bool have_ip = false; /* cmina_current_dcp_ase has IP address after this call
*/
bool have_name = false; /* cmina_current_dcp_ase has station name after this
call */
bool have_dhcp = false; /* Not yet supported */
bool change_ip = false; /* We have got a request to change IP address */
bool change_name = false; /* We have got a request to change station name */
bool change_dhcp = false; /* We have got a request to change DHCP settings */
bool reset_to_factory = false; /* We have got a request to do a factory reset
*/
char ip_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
char netmask_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
char gateway_string[PNAL_INET_ADDRSTR_SIZE] = {0}; /** Terminated string */
bool temp = ((block_qualifier & 1) == 0);
uint16_t reset_mode = 0;
/* Stop sending Hello packets */
pf_scheduler_remove_if_running (net, &net->cmina_hello_timeout);
/* Parse incoming DCP SET, without caring about actual CMINA state.
Update cmina_current_dcp_ase and cmina_nonvolatile_dcp_ase*/
switch (opt)
{
case PF_DCP_OPT_IP:
switch (sub)
{
case PF_DCP_SUB_IP_PAR:
if (
value_length ==
sizeof (net->cmina_current_dcp_ase.full_ip_suite.ip_suite))
{
if (pf_cmina_is_ipsuite_valid ((pf_ip_suite_t *)p_value))
{
/* Case 13 in Profinet 2.4 Table 1096 "CMINA state table" */
/* Set IP address etc */
change_ip =
(memcmp (
&net->cmina_current_dcp_ase.full_ip_suite.ip_suite,
p_value,
value_length) != 0);
memcpy (
&net->cmina_current_dcp_ase.full_ip_suite.ip_suite,
p_value,
sizeof (net->cmina_current_dcp_ase.full_ip_suite.ip_suite));
pf_cmina_ip_to_string (
net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_addr,
ip_string);
pf_cmina_ip_to_string (
net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_mask,
netmask_string);
pf_cmina_ip_to_string (
net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_gateway,
gateway_string);
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): The incoming set request is about changing IP "
"(not DNS). IP: %s Netmask: %s Gateway: %s Temporary: %u\n",
__LINE__,
ip_string,
netmask_string,
gateway_string,
temp);
if (temp == true)
{
memset (
&net->cmina_nonvolatile_dcp_ase.full_ip_suite.ip_suite,
0,
sizeof (pf_ip_suite_t));
}
else
{
net->cmina_nonvolatile_dcp_ase.full_ip_suite.ip_suite =
net->cmina_current_dcp_ase.full_ip_suite.ip_suite;
}
ret = 0;
}
else
{
/* Case 10, 22 in Profinet 2.4 Table 1096 "CMINA state table" */
LOG_INFO (
PF_DCP_LOG,
"CMINA(%d): Got incoming request to change IP suite to an "
"illegal value.\n",
__LINE__);
*p_block_error = PF_DCP_BLOCK_ERROR_SUBOPTION_NOT_SET;
}
}
else
{
/* Case 12, 23 in Profinet 2.4 Table 1096 "CMINA state table" */
*p_block_error = PF_DCP_BLOCK_ERROR_SUBOPTION_NOT_SET;
}
break;
case PF_DCP_SUB_IP_SUITE:
if (
value_length <
sizeof (net->cmina_current_dcp_ase.full_ip_suite)) /* Why less than?
*/
{
if (pf_cmina_is_full_ipsuite_valid ((pf_full_ip_suite_t *)p_value))
{
/* Case 13 in Profinet 2.4 Table 1096 "CMINA state table" */
/* Set IP address and DNS etc */
change_ip =
(memcmp (
&net->cmina_current_dcp_ase.full_ip_suite,
p_value,
value_length) != 0);
memcpy (
&net->cmina_current_dcp_ase.full_ip_suite,
p_value,
value_length);
pf_cmina_ip_to_string (
net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_addr,
ip_string);
pf_cmina_ip_to_string (
net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_mask,
netmask_string);
pf_cmina_ip_to_string (
net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_gateway,
gateway_string);
LOG_DEBUG (
PF_DCP_LOG,
"CMINA(%d): The incoming set request is about changing IP "
"and DNS. IP: %s Netmask: %s Gateway: %s Temporary: %u\n",
__LINE__,
ip_string,
netmask_string,
gateway_string,
temp);
if (temp == true)
{
memset (
&net->cmina_nonvolatile_dcp_ase.full_ip_suite,
0,
sizeof (pf_full_ip_suite_t));
}
else
{
net->cmina_nonvolatile_dcp_ase.full_ip_suite =
net->cmina_current_dcp_ase.full_ip_suite;
}
ret = 0;
}
else
{
/* Case 10,22 in Profinet 2.4 Table 1096 "CMINA state table" */
LOG_INFO (
PF_DCP_LOG,
"CMINA(%d): Got incoming request to change full IP suite to "
"an illegal value.\n",
__LINE__);
*p_block_error = PF_DCP_BLOCK_ERROR_SUBOPTION_NOT_SET;
}
}
else
{
*p_block_error = PF_DCP_BLOCK_ERROR_SUBOPTION_NOT_SET;
}
break;
default:
/* Case 12, 23 in Profinet 2.4 Table 1096 "CMINA state table" */
*p_block_error = PF_DCP_BLOCK_ERROR_SUBOPTION_NOT_SUPPORTED;
break;
}
break;
case PF_DCP_OPT_DEVICE_PROPERTIES:
switch (sub)
{
case PF_DCP_SUB_DEV_PROP_NAME:
if (value_length < sizeof (net->cmina_current_dcp_ase.station_name))
{
if (pf_cmina_is_stationname_valid ((char *)p_value, value_length))
{
/* Case 13, 27 in Profinet 2.4 Table "CMINA state table" */
/* Set station name */
change_name =
((strncmp (
net->cmina_current_dcp_ase.station_name,
(char *)p_value,
value_length) != 0) ||
(strlen (net->cmina_current_dcp_ase.station_name) !=
value_length));
strncpy (
net->cmina_current_dcp_ase.station_name,
(char *)p_value,
value_length);
net->cmina_current_dcp_ase.station_name[value_length] = '\0';
LOG_INFO (
PF_DCP_LOG,
"CMINA(%d): The incoming set request is about changing "
"station name. New name: \"%s\" Temporary: %u\n",
__LINE__,
net->cmina_current_dcp_ase.station_name,
temp);
if (temp == true)
{
memset (
net->cmina_nonvolatile_dcp_ase.station_name,
0,
sizeof (net->cmina_nonvolatile_dcp_ase.station_name));
}
else
{
strcpy (
net->cmina_nonvolatile_dcp_ase.station_name,
net->cmina_current_dcp_ase.station_name); /* It always
fits */
}
ret = 0;
}
else
{
/* Case 10, 22 in Profinet 2.4 Table 1096 "CMINA state table"*/
LOG_INFO (
PF_DCP_LOG,
"CMINA(%d): Got incoming request to change station name to "
"an illegal value.\n",
__LINE__);
*p_block_error = PF_DCP_BLOCK_ERROR_SUBOPTION_NOT_SET;
}
}
else
{
*p_block_error = PF_DCP_BLOCK_ERROR_SUBOPTION_NOT_SET;
}
break;
default:
/* Case 12, 23 in Profinet 2.4 Table 1096 "CMINA state table" */
*p_block_error = PF_DCP_BLOCK_ERROR_SUBOPTION_NOT_SUPPORTED;
break;
}
break;
case PF_DCP_OPT_DHCP:
LOG_INFO (PF_DCP_LOG, "CMINA(%d): Trying to set DHCP\n", __LINE__);
*p_block_error = PF_DCP_BLOCK_ERROR_OPTION_NOT_SUPPORTED;
change_dhcp = true;
break;
case PF_DCP_OPT_CONTROL:
if (sub == PF_DCP_SUB_CONTROL_FACTORY_RESET)
{
/* Case 15, 30 in Profinet 2.4 Table 1096 "CMINA state table" */
reset_to_factory = true;
reset_mode = 99; /* Reset all */
ret = 0;
}
else if (sub == PF_DCP_SUB_CONTROL_RESET_TO_FACTORY)
{
/* For additional information on reset modes see
* PN-AL-protocol (Mar20) Table 85
* BlockQualifier with option ControlOption and suboption
* SuboptionResetToFactory.
* Note that these values does not match the
* wireshark decoding which includes bit 0.
*/
reset_mode = block_qualifier >> 1;
/* Case 15, 30 in Profinet 2.4 Table 1096 "CMINA state table" */
reset_to_factory = true;
ret = 0;
}
break;
default:
/* Case 12, 23 in Profinet 2.4 Table 1096 "CMINA state table" */
*p_block_error = PF_DCP_BLOCK_ERROR_OPTION_NOT_SUPPORTED;
break;
}
/* Use parsed DCP SET request, depending on actual CMINA state */
if (ret == 0)
{
/* Save to file */
(void)pf_bg_worker_start_job (net, PF_BGJOB_SAVE_ASE_NVM_DATA);
/* Evaluate what we have and where to go */
have_name = (strlen (net->cmina_current_dcp_ase.station_name) > 0);
have_ip =
((net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_addr != 0) ||
(net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_mask != 0) ||
(net->cmina_current_dcp_ase.full_ip_suite.ip_suite.ip_gateway != 0));
have_dhcp = false; /* ToDo: Not supported here */
switch (net->cmina_state)
{
case PF_CMINA_STATE_SETUP:
/* Should not occur */
net->cmina_error_decode = PNET_ERROR_DECODE_PNIORW;
net->cmina_error_code_1 = PNET_ERROR_CODE_1_ACC_STATE_CONFLICT;
ret = -1;
break;
case PF_CMINA_STATE_SET_NAME:
case PF_CMINA_STATE_SET_IP:
if ((change_name == true) || (change_ip == true))
{
if ((have_name == true) && (have_ip == true))
{
/* Case 5, 13 in Profinet 2.4 Table 1096"CMINA state table" */
/* Change name or change IP */
/* Stop DHCP timer */
net->cmina_commit_ip_suite = true;
net->cmina_state = PF_CMINA_STATE_W_CONNECT;
ret = 0;
}
else
{
/* Stop IP */
if (have_name == false)
{
/* Case 15 in Profinet 2.4 Table 1096 "CMINA state table" */
/* Reset name */
net->cmina_state = PF_CMINA_STATE_SET_NAME;
}
else if (have_ip == false)
{
/* Case 15 in Profinet 2.4 Table 1096 "CMINA state table" */
/* Reset IP */
net->cmina_state = PF_CMINA_STATE_SET_IP;
}
}
}
else if (change_dhcp == true)
{
if (have_dhcp == true)
{
/* Case 14 in Profinet 2.4 Table 1096 "CMINA state table" */
/* Change DHCP */
memset (
&net->cmina_current_dcp_ase.full_ip_suite.ip_suite,
0,
sizeof (net->cmina_current_dcp_ase.full_ip_suite.ip_suite));
if (temp == false)
{
net->cmina_nonvolatile_dcp_ase.full_ip_suite.ip_suite =
net->cmina_current_dcp_ase.full_ip_suite.ip_suite;
}
/* dhcp_discover_req */
net->cmina_state = PF_CMINA_STATE_SET_IP;
}
else
{
/* Case 14 in Profinet 2.4 Table 1096 "CMINA state table" */
/* Reset DHCP */
/* Stop DHCP */
}
}
break;
case PF_CMINA_STATE_W_CONNECT:
if (
(change_name == false) && (change_ip == false) &&
(reset_to_factory == false))
{
/* Case 24 in Profinet 2.4 Table 1096 "CMINA state table" */
/* No change of name or IP. All OK */
}
else if ((have_name == false) || (reset_to_factory == true))
{
int aborted_ars = 0;
/* Case 27, 30 in Profinet 2.4 Table 1096 "CMINA state table" */
/* Reset name or reset to factory */
/* Abort active ARs */
if (reset_to_factory == true)
{
aborted_ars = pf_cmina_abort_active_ars (
net,
PNET_ERROR_CODE_2_ABORT_DCP_RESET_TO_FACTORY);
}
else
{
aborted_ars = pf_cmina_abort_active_ars (
net,