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Differential D30573 Diff 91112 sys/netinet/libalias/alias_db.c

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sys/netinet/libalias/alias_db.c

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/* Local prototypes */ /* Local prototypes */
static int GetNewPort(struct libalias *, struct alias_link *, int); static int GetNewPort(struct libalias *, struct alias_link *, int);
#ifndef NO_USE_SOCKETS #ifndef NO_USE_SOCKETS
static u_short GetSocket(struct libalias *, u_short, int *, int); static u_short GetSocket(struct libalias *, u_short, int *, int);
#endif #endif
static void CleanupAliasData(struct libalias *); static void CleanupAliasData(struct libalias *);
static void CleanupLink(struct libalias *, struct alias_link **); static void CleanupLink(struct libalias *, struct alias_link **);
static void DeleteLink(struct alias_link **); static void DeleteLink(struct alias_link **);
static struct alias_link *
UseLink(struct libalias *, struct alias_link *);
static struct alias_link * static struct alias_link *
ReLink(struct alias_link *, ReLink(struct alias_link *,
struct in_addr, struct in_addr, struct in_addr, struct in_addr, struct in_addr, struct in_addr,
u_short, u_short, int, int); u_short, u_short, int, int);
static struct alias_link * static struct alias_link *
FindLinkOut(struct libalias *, struct in_addr, struct in_addr, u_short, u_short, int, int); FindLinkOut(struct libalias *, struct in_addr, struct in_addr, u_short, u_short, int, int);
▲ Show 20 Lines • Show All 288 Lines • ▼ Show 20 Lines if ((*lnk) == NULL)
return; return;
} }
/* move to end, swap may fail on a single entry list */ /* move to end, swap may fail on a single entry list */
TAILQ_REMOVE(&la->checkExpire, (*lnk), list_expire); TAILQ_REMOVE(&la->checkExpire, (*lnk), list_expire);
TAILQ_INSERT_TAIL(&la->checkExpire, (*lnk), list_expire); TAILQ_INSERT_TAIL(&la->checkExpire, (*lnk), list_expire);
} }
static struct alias_link *
UseLink(struct libalias *la, struct alias_link *lnk)
{
CleanupLink(la, &lnk);
if (lnk != NULL)
lnk->timestamp = LibAliasTime;
return (lnk);
}
static void static void
DeleteLink(struct alias_link **plnk) DeleteLink(struct alias_link **plnk)
{ {
struct alias_link *lnk = *plnk; struct alias_link *lnk = *plnk;
struct libalias *la = lnk->la; struct libalias *la = lnk->la;
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
/* Don't do anything if the link is marked permanent */ /* Don't do anything if the link is marked permanent */
▲ Show 20 Lines • Show All 264 Lines • ▼ Show 20 Lines_SearchLinkOut(struct libalias *la, struct in_addr src_addr,
u_short dst_port, u_short dst_port,
int link_type) { int link_type) {
u_int i; u_int i;
struct alias_link *lnk; struct alias_link *lnk;
i = StartPointOut(src_addr, dst_addr, src_port, dst_port, link_type); i = StartPointOut(src_addr, dst_addr, src_port, dst_port, link_type);
LIST_FOREACH(lnk, &la->linkTableOut[i], list_out) { LIST_FOREACH(lnk, &la->linkTableOut[i], list_out) {
OUTGUARD; OUTGUARD;
CleanupLink(la, &lnk); return (UseLink(la, lnk));
if (lnk != NULL)
lnk->timestamp = LibAliasTime;
return (lnk);
} }
return (NULL); return (NULL);
} }
#undef OUTGUARD #undef OUTGUARD
static struct alias_link * static struct alias_link *
▲ Show 20 Lines • Show All 103 Lines • ▼ Show 20 Lines#define INGUARD \
continue; continue;
/* Search loop */ /* Search loop */
start_point = StartPointIn(alias_addr, alias_port, link_type); start_point = StartPointIn(alias_addr, alias_port, link_type);
if (!(flags_in & LINK_PARTIALLY_SPECIFIED)) { if (!(flags_in & LINK_PARTIALLY_SPECIFIED)) {
LIST_FOREACH(lnk, &la->linkTableIn[start_point], list_in) { LIST_FOREACH(lnk, &la->linkTableIn[start_point], list_in) {
INGUARD; INGUARD;
if (lnk->dst_addr.s_addr == dst_addr.s_addr if (lnk->dst_addr.s_addr == dst_addr.s_addr
&& lnk->dst_port == dst_port) { && lnk->dst_port == dst_port)
CleanupLink(la, &lnk); return (UseLink(la, lnk));
if (lnk != NULL)
lnk->timestamp = LibAliasTime;
return (lnk);
} }
}
} else { } else {
LIST_FOREACH(lnk, &la->linkTableIn[start_point], list_in) { LIST_FOREACH(lnk, &la->linkTableIn[start_point], list_in) {
int flags = flags_in & LINK_PARTIALLY_SPECIFIED; int flags = flags_in & LINK_PARTIALLY_SPECIFIED;
INGUARD; INGUARD;
if (flags == LINK_PARTIALLY_SPECIFIED && if (flags == LINK_PARTIALLY_SPECIFIED &&
lnk_unknown_all == NULL) lnk_unknown_all == NULL)
lnk_unknown_all = lnk; lnk_unknown_all = lnk;
▲ Show 20 Lines • Show All 350 Lines • ▼ Show 20 LinesFindPptpOutByCallId(struct libalias *la, struct in_addr src_addr,
i = StartPointOut(src_addr, dst_addr, 0, 0, LINK_PPTP); i = StartPointOut(src_addr, dst_addr, 0, 0, LINK_PPTP);
LIST_FOREACH(lnk, &la->linkTableOut[i], list_out) LIST_FOREACH(lnk, &la->linkTableOut[i], list_out)
if (lnk->link_type == LINK_PPTP && if (lnk->link_type == LINK_PPTP &&
lnk->src_addr.s_addr == src_addr.s_addr && lnk->src_addr.s_addr == src_addr.s_addr &&
lnk->dst_addr.s_addr == dst_addr.s_addr && lnk->dst_addr.s_addr == dst_addr.s_addr &&
lnk->src_port == src_call_id) lnk->src_port == src_call_id)
break; break;
CleanupLink(la, &lnk); return (UseLink(la, lnk));
return (lnk);
} }
struct alias_link * struct alias_link *
FindPptpOutByPeerCallId(struct libalias *la, struct in_addr src_addr, FindPptpOutByPeerCallId(struct libalias *la, struct in_addr src_addr,
struct in_addr dst_addr, struct in_addr dst_addr,
u_int16_t dst_call_id) u_int16_t dst_call_id)
{ {
u_int i; u_int i;
struct alias_link *lnk; struct alias_link *lnk;
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
i = StartPointOut(src_addr, dst_addr, 0, 0, LINK_PPTP); i = StartPointOut(src_addr, dst_addr, 0, 0, LINK_PPTP);
LIST_FOREACH(lnk, &la->linkTableOut[i], list_out) LIST_FOREACH(lnk, &la->linkTableOut[i], list_out)
if (lnk->link_type == LINK_PPTP && if (lnk->link_type == LINK_PPTP &&
lnk->src_addr.s_addr == src_addr.s_addr && lnk->src_addr.s_addr == src_addr.s_addr &&
lnk->dst_addr.s_addr == dst_addr.s_addr && lnk->dst_addr.s_addr == dst_addr.s_addr &&
lnk->dst_port == dst_call_id) lnk->dst_port == dst_call_id)
break; break;
CleanupLink(la, &lnk); return (UseLink(la, lnk));
return (lnk);
} }
struct alias_link * struct alias_link *
FindPptpInByCallId(struct libalias *la, struct in_addr dst_addr, FindPptpInByCallId(struct libalias *la, struct in_addr dst_addr,
struct in_addr alias_addr, struct in_addr alias_addr,
u_int16_t dst_call_id) u_int16_t dst_call_id)
{ {
struct alias_link *lnk; struct alias_link *lnk;
LIBALIAS_LOCK_ASSERT(la); LIBALIAS_LOCK_ASSERT(la);
LIST_FOREACH(lnk, &la->linkPartialIn[0], list_in) LIST_FOREACH(lnk, &la->linkPartialIn[0], list_in)
if (lnk->link_type == LINK_PPTP && if (lnk->link_type == LINK_PPTP &&
lnk->dst_addr.s_addr == dst_addr.s_addr && lnk->dst_addr.s_addr == dst_addr.s_addr &&
lnk->alias_addr.s_addr == alias_addr.s_addr && lnk->alias_addr.s_addr == alias_addr.s_addr &&
lnk->dst_port == dst_call_id) lnk->dst_port == dst_call_id)
break; break;
CleanupLink(la, &lnk); return (UseLink(la, lnk));
return (lnk);
} }
struct alias_link * struct alias_link *
FindPptpInByPeerCallId(struct libalias *la, struct in_addr dst_addr, FindPptpInByPeerCallId(struct libalias *la, struct in_addr dst_addr,
struct in_addr alias_addr, struct in_addr alias_addr,
u_int16_t alias_call_id) u_int16_t alias_call_id)
{ {
struct alias_link *lnk; struct alias_link *lnk;
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