2 files changed, 43 insertions, 40 deletions

diff --git a/plugins-root/check_icmp.d/check_icmp_helpers.c b/plugins-root/check_icmp.d/check_icmp_helpers.c
index 2efe6e59..2a521b04 100644
--- a/plugins-root/check_icmp.d/check_icmp_helpers.c
+++ b/plugins-root/check_icmp.d/check_icmp_helpers.c
@@ -10,8 +10,6 @@ unsigned int timeout = DEFAULT_TIMEOUT;
 
 check_icmp_config check_icmp_config_init() {
         check_icmp_config tmp = {
-                .source_ip = NULL,
-
                 .order_mode = false,
                 .mos_mode = false,
                 .rta_mode = false,
@@ -20,10 +18,6 @@ check_icmp_config check_icmp_config_init() {
                 .score_mode = false,
 
                 .min_hosts_alive = -1,
-                .icmp_data_size = DEFAULT_PING_DATA_SIZE,
-                .icmp_pkt_size = DEFAULT_PING_DATA_SIZE + ICMP_MINLEN,
-                .pkt_interval = DEFAULT_PKT_INTERVAL,
-                .target_interval = 0,
                 .crit = {.pl = DEFAULT_CRIT_PL,
                                  .rta = DEFAULT_CRIT_RTA,
                                  .jitter = 50.0,
@@ -34,11 +28,18 @@ check_icmp_config check_icmp_config_init() {
                                  .jitter = 40.0,
                                  .mos = 3.5,
                                  .score = 80.0},
-                .pid = {},
-                .mode = MODE_RTA,
+
                 .ttl = DEFAULT_TTL,
+                .icmp_data_size = DEFAULT_PING_DATA_SIZE,
+                .icmp_pkt_size = DEFAULT_PING_DATA_SIZE + ICMP_MINLEN,
+                .pkt_interval = DEFAULT_PKT_INTERVAL,
+                .target_interval = 0,
+                .number_of_packets = DEFAULT_NUMBER_OF_PACKETS,
+                .source_ip = NULL,
+
+                .sender_id = {},
 
-                .packets = DEFAULT_NUMBER_OF_PACKETS,
+                .mode = MODE_RTA,
 
                 .number_of_targets = 0,
                 .targets = NULL,
@@ -168,10 +169,10 @@ unsigned int ping_target_list_append(ping_target *list, ping_target *elem) {
         return result;
 }
 
-void check_icmp_timeout_handler(int signal, siginfo_t * info, void *ucontext) {
+void check_icmp_timeout_handler(int signal, siginfo_t *info, void *ucontext) {
         // Ignore unused arguments
-        (void) info;
-        (void) ucontext;
+        (void)info;
+        (void)ucontext;
         mp_subcheck timeout_sc = mp_subcheck_init();
         timeout_sc = mp_set_subcheck_state(timeout_sc, socket_timeout_state);
 
diff --git a/plugins-root/check_icmp.d/config.h b/plugins-root/check_icmp.d/config.h
index deae9bec..3599c0f0 100644
--- a/plugins-root/check_icmp.d/config.h
+++ b/plugins-root/check_icmp.d/config.h
@@ -10,20 +10,38 @@
 #include <netinet/ip_icmp.h>
 #include <netinet/icmp6.h>
 #include <arpa/inet.h>
+#include <stdint.h>
 #include "./check_icmp_helpers.h"
 
 /* threshold structure. all values are maximum allowed, exclusive */
-typedef struct threshold {
+typedef struct {
         unsigned char pl; /* max allowed packet loss in percent */
         unsigned int rta; /* roundtrip time average, microseconds */
         double jitter;    /* jitter time average, microseconds */
         double mos;       /* MOS */
         double score;     /* Score */
-} threshold;
+} check_icmp_threshold;
 
-typedef struct {
-        char *source_ip;
+/* the different modes of this program are as follows:
+ * MODE_RTA: send all packets no matter what (mimic check_icmp and check_ping)
+ * MODE_HOSTCHECK: Return immediately upon any sign of life
+ *                 In addition, sends packets to ALL addresses assigned
+ *                 to this host (as returned by gethostbyname() or
+ *                 gethostbyaddr() and expects one host only to be checked at
+ *                 a time.  Therefore, any packet response what so ever will
+ *                 count as a sign of life, even when received outside
+ *                 crit.rta limit. Do not misspell any additional IP's.
+ * MODE_ALL:  Requires packets from ALL requested IP to return OK (default).
+ * MODE_ICMP: Default Mode
+ */
+typedef enum {
+        MODE_RTA,
+        MODE_HOSTCHECK,
+        MODE_ALL,
+        MODE_ICMP,
+} check_icmp_execution_mode;
 
+typedef struct {
         bool order_mode;
         bool mos_mode;
         bool rta_mode;
@@ -32,18 +50,20 @@ typedef struct {
         bool score_mode;
 
         int min_hosts_alive;
+        check_icmp_threshold crit;
+        check_icmp_threshold warn;
+
+        unsigned long ttl;
         unsigned short icmp_data_size;
         unsigned short icmp_pkt_size;
         unsigned int pkt_interval;
         unsigned int target_interval;
-        threshold crit;
-        threshold warn;
-        pid_t pid;
+        unsigned short number_of_packets;
+        char *source_ip;
 
-        int mode;
-        unsigned long ttl;
+        uint16_t sender_id; // PID of the main process, which is used as an ID in packets
 
-        unsigned short packets;
+        check_icmp_execution_mode mode;
 
         unsigned short number_of_targets;
         ping_target *targets;
@@ -78,24 +98,6 @@ typedef struct icmp_ping_data {
 #define DEFAULT_TIMEOUT 10
 #define DEFAULT_TTL     64
 
-/* the different modes of this program are as follows:
- * MODE_RTA: send all packets no matter what (mimic check_icmp and check_ping)
- * MODE_HOSTCHECK: Return immediately upon any sign of life
- *                 In addition, sends packets to ALL addresses assigned
- *                 to this host (as returned by gethostbyname() or
- *                 gethostbyaddr() and expects one host only to be checked at
- *                 a time.  Therefore, any packet response what so ever will
- *                 count as a sign of life, even when received outside
- *                 crit.rta limit. Do not misspell any additional IP's.
- * MODE_ALL:  Requires packets from ALL requested IP to return OK (default).
- * MODE_ICMP: implement something similar to check_icmp (MODE_RTA without
- *            tcp and udp args does this)
- */
-#define MODE_RTA       0
-#define MODE_HOSTCHECK 1
-#define MODE_ALL       2
-#define MODE_ICMP      3
-
 #define DEFAULT_NUMBER_OF_PACKETS 5
 
 #define PACKET_BACKOFF_FACTOR 1.5