decode/pppoe: localize pppoedh pointer

Remove from Packet struct as there were no users of it.

Ticket: #6938.

src/decode-pppoe.c

@@ -59,11 +59,10 @@ int DecodePPPOEDiscovery(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p,
         return TM_ECODE_FAILED;
     }
 
-    p->pppoedh = (PPPOEDiscoveryHdr *)pkt;
+    PPPOEDiscoveryHdr *pppoedh = (PPPOEDiscoveryHdr *)pkt;
 
     /* parse the PPPOE code */
-    switch (p->pppoedh->pppoe_code)
-    {
+    switch (pppoedh->pppoe_code) {
         case PPPOE_CODE_PADI:
             break;
         case PPPOE_CODE_PADO:
@@ -75,12 +74,12 @@ int DecodePPPOEDiscovery(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p,
         case PPPOE_CODE_PADT:
             break;
         default:
-            SCLogDebug("unknown PPPOE code: 0x%0"PRIX8"", p->pppoedh->pppoe_code);
+            SCLogDebug("unknown PPPOE code: 0x%0" PRIX8 "", pppoedh->pppoe_code);
             ENGINE_SET_INVALID_EVENT(p, PPPOE_WRONG_CODE);
             return TM_ECODE_OK;
     }
 
-    uint32_t pppoe_length = SCNtohs(p->pppoedh->pppoe_length);
+    uint32_t pppoe_length = SCNtohs(pppoedh->pppoe_length);
     uint32_t packet_length = len - PPPOE_DISCOVERY_HEADER_MIN_LEN ;
 
     SCLogDebug("pppoe_length %"PRIu32", packet_length %"PRIu32"",
@@ -318,7 +317,6 @@ static int DecodePPPOEtest02 (void)
  */
 static int DecodePPPOEtest03 (void)
 {
-
     /* example PADO packet taken from RFC2516 */
     uint8_t raw_pppoe[] = {
         0x11, 0x07, 0x00, 0x00, 0x00, 0x20, 0x01, 0x01,
@@ -336,8 +334,8 @@ static int DecodePPPOEtest03 (void)
     memset(&tv, 0, sizeof(ThreadVars));
     memset(&dtv, 0, sizeof(DecodeThreadVars));
 
-    DecodePPPOEDiscovery(&tv, &dtv, p, raw_pppoe, sizeof(raw_pppoe));
-    FAIL_IF_NULL(p->pppoedh);
+    int r = DecodePPPOEDiscovery(&tv, &dtv, p, raw_pppoe, sizeof(raw_pppoe));
+    FAIL_IF_NOT(r == TM_ECODE_OK);
 
     SCFree(p);
     PASS;

src/decode.h

@@ -87,7 +87,6 @@ enum PktSrcEnum {
 #include "decode-ethernet.h"
 #include "decode-gre.h"
 #include "decode-ppp.h"
-#include "decode-pppoe.h"
 #include "decode-ipv4.h"
 #include "decode-ipv6.h"
 #include "decode-icmpv4.h"
@@ -583,7 +582,6 @@ typedef struct Packet_
 
     TCPHdr *tcph;
     UDPHdr *udph;
-    PPPOEDiscoveryHdr *pppoedh;
 
     /* ptr to the payload of the packet
      * with it's length. */

src/packet.c

@@ -121,7 +121,6 @@ void PacketReinit(Packet *p)
     if (p->udph != NULL) {
         CLEAR_UDP_PACKET(p);
     }
-    p->pppoedh = NULL;
     p->payload = NULL;
     p->payload_len = 0;
     p->BypassPacketsFlow = NULL;

src/runmode-unittests.c

@@ -108,6 +108,7 @@
 #include "decode-chdlc.h"
 #include "decode-geneve.h"
 #include "decode-nsh.h"
+#include "decode-pppoe.h"
 #include "decode-raw.h"
 #include "decode-vntag.h"
 #include "decode-vxlan.h"