1 files changed, 97 insertions, 0 deletions
diff --git a/mdk-stage1/rp-pppoe/src/relay.h b/mdk-stage1/rp-pppoe/src/relay.h
new file mode 100644
index 000000000..d438a657f
--- /dev/null
+++ b/mdk-stage1/rp-pppoe/src/relay.h
@@ -0,0 +1,97 @@
+/**********************************************************************
+*
+* relay.h
+*
+* Definitions for PPPoE relay
+*
+* Copyright (C) 2001 Roaring Penguin Software Inc.
+*
+* This program may be distributed according to the terms of the GNU
+* General Public License, version 2 or (at your option) any later version.
+*
+* $Id$
+*
+***********************************************************************/
+
+#include "pppoe.h"
+
+/* Description for each active Ethernet interface */
+typedef struct InterfaceStruct {
+    char name[IFNAMSIZ+1];	/* Interface name */
+    int discoverySock;		/* Socket for discovery frames */
+    int sessionSock;		/* Socket for session frames */
+    int clientOK;		/* Client requests allowed (PADI, PADR) */
+    int acOK;			/* AC replies allowed (PADO, PADS) */
+    unsigned char mac[ETH_ALEN]; /* MAC address */
+} PPPoEInterface;
+
+/* Session state for relay */
+struct SessionHashStruct;
+typedef struct SessionStruct {
+    struct SessionStruct *next;	/* Free list link */
+    struct SessionStruct *prev;	/* Free list link */
+    struct SessionHashStruct *acHash; /* Hash bucket for AC MAC/Session */
+    struct SessionHashStruct *clientHash; /* Hash bucket for client MAC/Session */
+    unsigned int epoch;		/* Epoch when last activity was seen */
+    UINT16_t sesNum;		/* Session number assigned by relay */
+} PPPoESession;
+
+/* Hash table entry to find sessions */
+typedef struct SessionHashStruct {
+    struct SessionHashStruct *next; /* Link in hash chain */
+    struct SessionHashStruct *prev; /* Link in hash chain */
+    struct SessionHashStruct *peer; /* Peer for this session */
+    PPPoEInterface const *interface;	/* Interface */
+    unsigned char peerMac[ETH_ALEN]; /* Peer's MAC address */
+    UINT16_t sesNum;		/* Session number */
+    PPPoESession *ses;		/* Session data */
+} SessionHash;
+
+/* Function prototypes */
+
+void relayGotSessionPacket(PPPoEInterface const *i);
+void relayGotDiscoveryPacket(PPPoEInterface const *i);
+PPPoEInterface *findInterface(int sock);
+unsigned int hash(unsigned char const *mac, UINT16_t sesNum);
+SessionHash *findSession(unsigned char const *mac, UINT16_t sesNum);
+void deleteHash(SessionHash *hash);
+PPPoESession *createSession(PPPoEInterface const *ac,
+			    PPPoEInterface const *cli,
+			    unsigned char const *acMac,
+			    unsigned char const *cliMac,
+			    UINT16_t acSes);
+void freeSession(PPPoESession *ses, char const *msg);
+void addInterface(char const *ifname, int clientOK, int acOK);
+void usage(char const *progname);
+void initRelay(int nsess);
+void relayLoop(void);
+void addHash(SessionHash *sh);
+void unhash(SessionHash *sh);
+
+void relayHandlePADT(PPPoEInterface const *iface, PPPoEPacket *packet, int size);
+void relayHandlePADI(PPPoEInterface const *iface, PPPoEPacket *packet, int size);
+void relayHandlePADO(PPPoEInterface const *iface, PPPoEPacket *packet, int size);
+void relayHandlePADR(PPPoEInterface const *iface, PPPoEPacket *packet, int size);
+void relayHandlePADS(PPPoEInterface const *iface, PPPoEPacket *packet, int size);
+
+int addTag(PPPoEPacket *packet, PPPoETag const *tag);
+int insertBytes(PPPoEPacket *packet, unsigned char *loc,
+		void const *bytes, int length);
+int removeBytes(PPPoEPacket *packet, unsigned char *loc,
+		int length);
+void relaySendError(unsigned char code,
+		    UINT16_t session,
+		    PPPoEInterface const *iface,
+		    unsigned char const *mac,
+		    PPPoETag const *hostUniq,
+		    char const *errMsg);
+
+void alarmHandler(int sig);
+void cleanSessions(void);
+
+#define MAX_INTERFACES 8
+#define DEFAULT_SESSIONS 5000
+
+/* Hash table size -- a prime number; gives load factor of around 6
+   for 65534 sessions */
+#define HASHTAB_SIZE 18917