ped_services.c File Reference

Routines related to talking to psd. More...

#include <sync/common.h>
#include <sync/psd_ipc.h>
#include "ped_config.h"
#include "ped_services.h"
#include "ped_schedule.h"
#include "ped_logging.h"
#include "ped_ssd.h"
#include "ped_kcom.h"
#include "ped_policy_table.h"
#include "ped_snmp.h"
#include "ped_script.h"

Go to the source code of this file.

Defines

#define evInitID(id)   ((id)->opaque = NULL)
 initialize the evFileID
#define evTestID(id)   ((id).opaque != NULL)
 Test if the evFileID has been initialized.
#define BUFFER_SIZE   1024
 Send buffer size in bytes for any pipes / sockets.

Functions

static void send_psd_req (msg_type_e req_type, char *ifname, uint8_t af)
static void psd_ipc_read (evContext ctx __unused, void *param __unused, int fd __unused, int evmask __unused)
static boolean connect_psd (void)
void update_interface (char *ifname, uint32_t unit, uint8_t af, interface_op_e op)
boolean check_psd_hb (void)
void update_policies (void)
void disconnect_psd (void)
boolean psd_conn_state (void)
int get_psd_conn_time (void)

Variables

static int psd_sock = -1
 socket to psd -1 => not connected
static ipc_pipe_t * psd_pipe = NULL
 pipe to psd
static evFileID psd_read_id
 fd read ID
static boolean psd_hb = FALSE
 got heart-beat
static boolean psd_conn = FALSE
 state of PSD connection
static boolean need_policy_update = FALSE
 PSD or PED config changed.
static struct timespec psd_conn_time
 the up time of psd connection
evContext ped_ctx
 event context for ped


Detailed Description

Routines related to talking to psd.

Functions for connecting to psd and requesting policies from it

Definition in file ped_services.c.


Function Documentation

boolean check_psd_hb ( void   ) 

Check heartbeat from PSD. This function is routinely called by ped_periodic() If not received then disconnect and reconnect. This also establishes the connection when the application starts.

Returns:
TRUE if a heartbeat was sent to the PSD, FALSE if the connection to the PSD is down and cannot be re-established.

Definition at line 487 of file ped_services.c.

References connect_psd(), disconnect_psd(), MSG_HB, psd_hb, and send_psd_req().

Referenced by ped_periodic().

static boolean connect_psd ( void   )  [static]

Establish a connection with the Policy Server Daemon (psd) and create/setup necessary infrastructure for communicating with it.

Returns:
TRUE if the connection was successfully established, otherwise FALSE

Definition at line 317 of file ped_services.c.

References BUFFER_SIZE, disconnect_psd(), evInitID, need_policy_update, ped_ctx, psd_conn_time, PSD_CONNECT_ADDRESS, psd_ipc_read(), psd_pipe, PSD_PORT_NUM, psd_read_id, and psd_sock.

Referenced by check_psd_hb().

void disconnect_psd ( void   ) 

Disconnect the connection to the Policy Server Daemon (psd). Something's gone wrong...so we'll schedule a reconnect using a heart beat failure flag (psd_hb).

Definition at line 527 of file ped_services.c.

References evInitID, evTestID, need_policy_update, ped_ctx, ped_notify_psd_state(), psd_conn, psd_hb, psd_pipe, psd_read_id, and psd_sock.

Referenced by check_psd_hb(), connect_psd(), and psd_ipc_read().

int get_psd_conn_time ( void   ) 

Get the number of seconds since that the connection to the PSD has been up

Returns:
the number of seconds since that the connection to the PSD has been up

Definition at line 587 of file ped_services.c.

References psd_conn_time.

Referenced by handler_psd_time().

boolean psd_conn_state ( void   ) 

Get the state of PSD connection.

Returns:
state of psd connection T=up, F=down

Definition at line 573 of file ped_services.c.

References psd_conn.

Referenced by handler_psd_state().

static void psd_ipc_read ( evContext ctx  __unused,
void *param  __unused,
int fd  __unused,
int evmask  __unused 
) [static]

Read messages from Policy Server Daemon (psd).

Definition at line 166 of file ped_services.c.

References policy_req_msg_s::af, disconnect_psd(), get_ssd_idle(), get_ssd_ready(), policy_req_msg_s::ifname, IPC_MSG_TYPE_PSD, MSG_FILTER, MSG_HB, MSG_POLICY_NA, MSG_POLICY_UPDATE, MSG_ROUTE, MSG_UPDATE_DONE, need_policy_update, ped_notify_psd_state(), policy_table_add_filter(), policy_table_add_route(), policy_table_clean(), policy_table_clear_policy(), policy_table_unverify_all(), psd_conn, psd_hb, psd_pipe, send_psd_req(), and update_all_interfaces().

Referenced by connect_psd().

static void send_psd_req ( msg_type_e  req_type,
char *  ifname,
uint8_t  af 
) [static]

Send a request to the policy server for this interface name and address family.

Parameters:
[in] req_type Type of message to send
[in] ifname The name of the interface for which we want to know of policies
[in] af The address family

Definition at line 90 of file ped_services.c.

References policy_req_msg_s::af, policy_req_msg_s::ifname, IPC_MSG_TYPE_PSD, MSG_HB, MSG_POLICY_REQ, MSG_UPDATE_DONE, and psd_pipe.

Referenced by check_psd_hb(), psd_ipc_read(), and update_interface().

void update_interface ( char *  ifname,
uint32_t  unit,
uint8_t  af,
interface_op_e  op 
)

Check interface name against the configured conditions. If it's match update this interface in the table of managed interfaces (associated policies) and if needed request a policy from the PSD.

Parameters:
[in] ifname interface name
[in] unit interface (IFL) unit number
[in] af address family
[in] op operation to this interface

Definition at line 438 of file ped_services.c.

References find_matching_condition(), INTERFACE_ADD, INTERFACE_DELETE, INTERFACE_REFRESH, MAX_IF_NAME_LEN, MSG_POLICY_REQ, policy_table_delete_policy(), and send_psd_req().

Referenced by iff_async_handler(), and iff_manage_handler().

void update_policies ( void   ) 

Update policies

Definition at line 514 of file ped_services.c.

References need_policy_update.

Referenced by ped_config_read(), and session_connect().


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