diff options
Diffstat (limited to 'sys/netinet/libalias/alias_local.h')
| -rw-r--r-- | sys/netinet/libalias/alias_local.h | 178 |
1 files changed, 74 insertions, 104 deletions
diff --git a/sys/netinet/libalias/alias_local.h b/sys/netinet/libalias/alias_local.h index ba128638c1fe..e6374a72ef75 100644 --- a/sys/netinet/libalias/alias_local.h +++ b/sys/netinet/libalias/alias_local.h @@ -66,8 +66,8 @@ #endif /* Sizes of input and output link tables */ -#define LINK_TABLE_OUT_SIZE 4001 -#define LINK_TABLE_IN_SIZE 4001 +#define LINK_TABLE_OUT_SIZE 4001 +#define LINK_TABLE_IN_SIZE 4001 #define GET_ALIAS_PORT -1 #define GET_ALIAS_ID GET_ALIAS_PORT @@ -82,30 +82,21 @@ struct proxy_entry; struct libalias { LIST_ENTRY(libalias) instancelist; - - int packetAliasMode; /* Mode flags */ - /* - documented in alias.h */ - - struct in_addr aliasAddress; /* Address written onto source */ - /* field of IP packet. */ - - struct in_addr targetAddress; /* IP address incoming packets */ - /* are sent to if no aliasing */ - /* link already exists */ - - struct in_addr nullAddress; /* Used as a dummy parameter for */ - /* some function calls */ - - LIST_HEAD (, alias_link) linkTableOut[LINK_TABLE_OUT_SIZE]; - /* Lookup table of pointers to */ - /* chains of link records. Each */ - - LIST_HEAD (, alias_link) linkTableIn[LINK_TABLE_IN_SIZE]; - /* link record is doubly indexed */ - /* into input and output lookup */ - /* tables. */ - - /* Link statistics */ + /* Mode flags documented in alias.h */ + int packetAliasMode; + /* Address written onto source field of IP packet. */ + struct in_addr aliasAddress; + /* IP address incoming packets are sent to + * if no aliasing link already exists */ + struct in_addr targetAddress; + /* Used as a dummy parameter for some function calls */ + struct in_addr nullAddress; + /* Lookup table of pointers to chains of link records. + * Each link record is doubly indexed into input and + * output lookup tables. */ + LIST_HEAD (, alias_link) linkTableOut[LINK_TABLE_OUT_SIZE]; + LIST_HEAD (, alias_link) linkTableIn[LINK_TABLE_IN_SIZE]; + /* Link statistics */ int icmpLinkCount; int udpLinkCount; int tcpLinkCount; @@ -114,49 +105,41 @@ struct libalias { int fragmentIdLinkCount; int fragmentPtrLinkCount; int sockCount; - - int cleanupIndex; /* Index to chain of link table */ - /* being inspected for old links */ - - int timeStamp; /* System time in seconds for */ - /* current packet */ - - int lastCleanupTime; /* Last time - * IncrementalCleanup() */ - /* was called */ - - int deleteAllLinks; /* If equal to zero, DeleteLink() */ - /* will not remove permanent links */ - - /* log descriptor */ -#ifdef _KERNEL - char *logDesc; -#else - FILE *logDesc; + /* Index to chain of link table being inspected for old links */ + int cleanupIndex; + /* System time in seconds for current packet */ + int timeStamp; + /* Last time IncrementalCleanup() was called */ + int lastCleanupTime; + /* If equal to zero, DeleteLink() + * will not remove permanent links */ + int deleteAllLinks; + /* log descriptor */ +#ifdef _KERNEL + char *logDesc; +#else + FILE *logDesc; #endif - /* statistics monitoring */ - - int newDefaultLink; /* Indicates if a new aliasing */ - /* link has been created after a */ - /* call to PacketAliasIn/Out(). */ + /* Indicates if a new aliasing link has been created + * after a call to PacketAliasIn/Out(). */ + int newDefaultLink; #ifndef NO_FW_PUNCH - int fireWallFD; /* File descriptor to be able to */ - /* control firewall. Opened by */ - /* PacketAliasSetMode on first */ - /* setting the PKT_ALIAS_PUNCH_FW */ - /* flag. */ - int fireWallBaseNum; /* The first firewall entry - * free for our use */ - int fireWallNumNums; /* How many entries can we - * use? */ - int fireWallActiveNum; /* Which entry did we last - * use? */ - char *fireWallField; /* bool array for entries */ + /* File descriptor to be able to control firewall. + * Opened by PacketAliasSetMode on first setting + * the PKT_ALIAS_PUNCH_FW flag. */ + int fireWallFD; + /* The first firewall entry free for our use */ + int fireWallBaseNum; + /* How many entries can we use? */ + int fireWallNumNums; + /* Which entry did we last use? */ + int fireWallActiveNum; + /* bool array for entries */ + char *fireWallField; #endif - - unsigned int skinnyPort; /* TCP port used by the Skinny */ - /* protocol. */ + /* TCP port used by the Skinny protocol. */ + unsigned int skinnyPort; struct proxy_entry *proxyList; @@ -173,25 +156,17 @@ struct libalias { /* counts associations that have progressed to UP and not yet removed */ int sctpLinkCount; -#ifdef _KERNEL +#ifdef _KERNEL /* timing queue for keeping track of association timeouts */ struct sctp_nat_timer sctpNatTimer; - /* size of hash table used in this instance */ u_int sctpNatTableSize; - -/* - * local look up table sorted by l_vtag/l_port - */ + /* local look up table sorted by l_vtag/l_port */ LIST_HEAD(sctpNatTableL, sctp_nat_assoc) *sctpTableLocal; -/* - * global look up table sorted by g_vtag/g_port - */ + /* global look up table sorted by g_vtag/g_port */ LIST_HEAD(sctpNatTableG, sctp_nat_assoc) *sctpTableGlobal; - /* - * avoid races in libalias: every public function has to use it. - */ + /* avoid races in libalias: every public function has to use it. */ struct mtx mutex; #endif }; @@ -200,7 +175,7 @@ struct libalias { #ifdef _KERNEL #define LIBALIAS_LOCK_INIT(l) \ - mtx_init(&l->mutex, "per-instance libalias mutex", NULL, MTX_DEF) + mtx_init(&l->mutex, "per-instance libalias mutex", NULL, MTX_DEF) #define LIBALIAS_LOCK_ASSERT(l) mtx_assert(&l->mutex, MA_OWNED) #define LIBALIAS_LOCK(l) mtx_lock(&l->mutex) #define LIBALIAS_UNLOCK(l) mtx_unlock(&l->mutex) @@ -240,7 +215,7 @@ struct libalias { /* * SctpFunction prototypes - * + * */ void AliasSctpInit(struct libalias *la); void AliasSctpTerm(struct libalias *la); @@ -279,9 +254,9 @@ struct alias_link * FindFragmentIn2(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, u_short _ip_id); struct alias_link * - AddFragmentPtrLink(struct libalias *la, struct in_addr _dst_addr, u_short _ip_id); +AddFragmentPtrLink(struct libalias *la, struct in_addr _dst_addr, u_short _ip_id); struct alias_link * - FindFragmentPtr(struct libalias *la, struct in_addr _dst_addr, u_short _ip_id); +FindFragmentPtr(struct libalias *la, struct in_addr _dst_addr, u_short _ip_id); struct alias_link * FindProtoIn(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, u_char _proto); @@ -313,17 +288,17 @@ struct alias_link * FindRtspOut(struct libalias *la, struct in_addr _src_addr, struct in_addr _dst_addr, u_short _src_port, u_short _alias_port, u_char _proto); struct in_addr - FindOriginalAddress(struct libalias *la, struct in_addr _alias_addr); +FindOriginalAddress(struct libalias *la, struct in_addr _alias_addr); +struct in_addr +FindAliasAddress(struct libalias *la, struct in_addr _original_addr); struct in_addr - FindAliasAddress(struct libalias *la, struct in_addr _original_addr); -struct in_addr FindSctpRedirectAddress(struct libalias *la, struct sctp_nat_msg *sm); /* External data access/modification */ -int -FindNewPortGroup(struct libalias *la, struct in_addr _dst_addr, struct in_addr _alias_addr, - u_short _src_port, u_short _dst_port, u_short _port_count, - u_char _proto, u_char _align); +int FindNewPortGroup(struct libalias *la, struct in_addr _dst_addr, + struct in_addr _alias_addr, u_short _src_port, + u_short _dst_port, u_short _port_count, u_char _proto, + u_char _align); void GetFragmentAddr(struct alias_link *_lnk, struct in_addr *_src_addr); void SetFragmentAddr(struct alias_link *_lnk, struct in_addr _src_addr); void GetFragmentPtr(struct alias_link *_lnk, void **_fptr); @@ -332,27 +307,22 @@ void SetStateIn(struct alias_link *_lnk, int _state); void SetStateOut(struct alias_link *_lnk, int _state); int GetStateIn (struct alias_link *_lnk); int GetStateOut(struct alias_link *_lnk); -struct in_addr - GetOriginalAddress(struct alias_link *_lnk); -struct in_addr - GetDestAddress(struct alias_link *_lnk); -struct in_addr - GetAliasAddress(struct alias_link *_lnk); -struct in_addr - GetDefaultAliasAddress(struct libalias *la); +struct in_addr GetOriginalAddress(struct alias_link *_lnk); +struct in_addr GetDestAddress(struct alias_link *_lnk); +struct in_addr GetAliasAddress(struct alias_link *_lnk); +struct in_addr GetDefaultAliasAddress(struct libalias *la); void SetDefaultAliasAddress(struct libalias *la, struct in_addr _alias_addr); u_short GetOriginalPort(struct alias_link *_lnk); u_short GetAliasPort(struct alias_link *_lnk); -struct in_addr - GetProxyAddress(struct alias_link *_lnk); +struct in_addr GetProxyAddress(struct alias_link *_lnk); void SetProxyAddress(struct alias_link *_lnk, struct in_addr _addr); u_short GetProxyPort(struct alias_link *_lnk); void SetProxyPort(struct alias_link *_lnk, u_short _port); void SetAckModified(struct alias_link *_lnk); int GetAckModified(struct alias_link *_lnk); int GetDeltaAckIn(u_long, struct alias_link *_lnk); -int GetDeltaSeqOut(u_long, struct alias_link *lnk); -void AddSeq(struct alias_link *lnk, int delta, u_int ip_hl, +int GetDeltaSeqOut(u_long, struct alias_link *lnk); +void AddSeq(struct alias_link *lnk, int delta, u_int ip_hl, u_short ip_len, u_long th_seq, u_int th_off); void SetExpire (struct alias_link *_lnk, int _expire); void ClearCheckNewLink(struct libalias *la); @@ -368,18 +338,18 @@ void PunchFWHole(struct alias_link *_lnk); /* Housekeeping function */ void HouseKeeping(struct libalias *); -/* Tcp specific routines */ -/* lint -save -library Suppress flexelint warnings */ - /* Transparent proxy routines */ int ProxyCheck(struct libalias *la, struct in_addr *proxy_server_addr, - u_short * proxy_server_port, struct in_addr src_addr, + u_short * proxy_server_port, struct in_addr src_addr, struct in_addr dst_addr, u_short dst_port, u_char ip_p); void ProxyModify(struct libalias *la, struct alias_link *_lnk, struct ip *_pip, int _maxpacketsize, int _proxy_type); +/* Tcp specific routines */ +/* lint -save -library Suppress flexelint warnings */ + enum alias_tcp_state { ALIAS_TCP_STATE_NOT_CONNECTED, ALIAS_TCP_STATE_CONNECTED, |