lldp: improve debug log message

diff --git a/src/libsystemd-network/lldp-internal.h b/src/libsystemd-network/lldp-internal.h
index 328d51f8ead2bdfee0bf382c9520060c293d0c09..88b54933c3941afb9518f84dd6a43f06d0e51334 100644 (file)
--- a/src/libsystemd-network/lldp-internal.h
+++ b/src/libsystemd-network/lldp-internal.h
@@ -34,3 +34,6 @@ struct sd_lldp {
 
 #define log_lldp_errno(error, fmt, ...) log_internal(LOG_DEBUG, error, __FILE__, __LINE__, __func__, "LLDP: " fmt, ##__VA_ARGS__)
 #define log_lldp(fmt, ...) log_lldp_errno(0, fmt, ##__VA_ARGS__)
+
+const char* lldp_event_to_string(sd_lldp_event e) _const_;
+sd_lldp_event lldp_event_from_string(const char *s) _pure_;

diff --git a/src/libsystemd-network/sd-lldp.c b/src/libsystemd-network/sd-lldp.c
index f72ef204b91aa22198e58fdbda318fe3f2488d07..993ca13727ba422084d6499a296f7bbd2141bf3f 100644 (file)
--- a/src/libsystemd-network/sd-lldp.c
+++ b/src/libsystemd-network/sd-lldp.c
@@ -6,15 +6,25 @@
 #include "sd-lldp.h"
 
 #include "alloc-util.h"
+#include "ether-addr-util.h"
 #include "fd-util.h"
 #include "lldp-internal.h"
 #include "lldp-neighbor.h"
 #include "lldp-network.h"
 #include "socket-util.h"
-#include "ether-addr-util.h"
+#include "string-table.h"
 
 #define LLDP_DEFAULT_NEIGHBORS_MAX 128U
 
+static const char * const lldp_event_table[_SD_LLDP_EVENT_MAX] = {
+        [SD_LLDP_EVENT_ADDED]   = "added",
+        [SD_LLDP_EVENT_REMOVED] = "removed",
+        [SD_LLDP_EVENT_UPDATED]   = "updated",
+        [SD_LLDP_EVENT_REFRESHED] = "refreshed",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(lldp_event, sd_lldp_event);
+
 static void lldp_flush_neighbors(sd_lldp *lldp) {
         sd_lldp_neighbor *n;
 
@@ -26,12 +36,14 @@ static void lldp_flush_neighbors(sd_lldp *lldp) {
 
 static void lldp_callback(sd_lldp *lldp, sd_lldp_event event, sd_lldp_neighbor *n) {
         assert(lldp);
+        assert(event >= 0 && event < _SD_LLDP_EVENT_MAX);
 
-        log_lldp("Invoking callback for '%c'.", event);
-
-        if (!lldp->callback)
+        if (!lldp->callback) {
+                log_lldp("Received '%s' event.", lldp_event_to_string(event));
                 return;
+        }
 
+        log_lldp("Invoking callback for '%s' event.", lldp_event_to_string(event));
         lldp->callback(lldp, event, n, lldp->userdata);
 }
 

diff --git a/src/systemd/sd-lldp.h b/src/systemd/sd-lldp.h
index d650794cc0cfb12970bec263566fc0dab2b96563..a3e5cd6be6b87f67f0f62e491abf00ad4dc5f066 100644 (file)
--- a/src/systemd/sd-lldp.h
+++ b/src/systemd/sd-lldp.h
@@ -109,10 +109,12 @@ typedef struct sd_lldp sd_lldp;
 typedef struct sd_lldp_neighbor sd_lldp_neighbor;
 
 typedef enum sd_lldp_event {
-        SD_LLDP_EVENT_ADDED     = 'a',
-        SD_LLDP_EVENT_REMOVED   = 'r',
-        SD_LLDP_EVENT_UPDATED   = 'u',
-        SD_LLDP_EVENT_REFRESHED = 'f',
+        SD_LLDP_EVENT_ADDED,
+        SD_LLDP_EVENT_REMOVED,
+        SD_LLDP_EVENT_UPDATED,
+        SD_LLDP_EVENT_REFRESHED,
+        _SD_LLDP_EVENT_MAX,
+        _SD_LLDP_EVENT_INVALID = -1,
 } sd_lldp_event;
 
 typedef void (*sd_lldp_callback_t)(sd_lldp *lldp, sd_lldp_event event, sd_lldp_neighbor *n, void *userdata);