mpm: register algo features

This is so patterns can reply on mpm match meaning a full match.

Not yet used.

src/util-mpm-ac-ks.c

@@ -1408,6 +1408,7 @@ void MpmACTileRegister(void)
 #ifdef UNITTESTS
     mpm_table[MPM_AC_KS].RegisterUnittests = SCACTileRegisterTests;
 #endif
+    mpm_table[MPM_AC_KS].feature_flags = MPM_FEATURE_FLAG_DEPTH | MPM_FEATURE_FLAG_OFFSET;
 }
 
 

src/util-mpm-ac.c

@@ -1127,6 +1127,7 @@ void MpmACRegister(void)
 #ifdef UNITTESTS
     mpm_table[MPM_AC].RegisterUnittests = SCACRegisterTests;
 #endif
+    mpm_table[MPM_AC].feature_flags = MPM_FEATURE_FLAG_DEPTH | MPM_FEATURE_FLAG_OFFSET;
     return;
 }
 

src/util-mpm-hs.c

@@ -1055,6 +1055,7 @@ void MpmHSRegister(void)
 #ifdef UNITTESTS
     mpm_table[MPM_HS].RegisterUnittests = SCHSRegisterTests;
 #endif
+    mpm_table[MPM_HS].feature_flags = MPM_FEATURE_FLAG_DEPTH | MPM_FEATURE_FLAG_OFFSET;
     /* Set Hyperscan memory allocators */
     SCHSSetAllocators();
 }

src/util-mpm.h

@@ -138,6 +138,9 @@ typedef struct MpmCtxFactoryContainer_ {
  *  what is passed through the API */
 #define MPM_PATTERN_CTX_OWNS_ID     0x20
 
+#define MPM_FEATURE_FLAG_DEPTH  BIT_U8(0)
+#define MPM_FEATURE_FLAG_OFFSET BIT_U8(1)
+
 typedef struct MpmTableElmt_ {
     const char *name;
     void (*InitCtx)(struct MpmCtx_ *);
@@ -166,6 +169,7 @@ typedef struct MpmTableElmt_ {
 #ifdef UNITTESTS
     void (*RegisterUnittests)(void);
 #endif
+    uint8_t feature_flags;
 } MpmTableElmt;
 
 extern MpmTableElmt mpm_table[MPM_TABLE_SIZE];