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author | ru <ru@FreeBSD.org> | 2000-08-14 14:18:16 +0000 |
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committer | ru <ru@FreeBSD.org> | 2000-08-14 14:18:16 +0000 |
commit | e8f5de8393c98b0c32602246d41e2181100dcd9d (patch) | |
tree | 8669c6b371667964665905808d7f7d80f7bfcd3b /lib/libalias/alias_db.c | |
parent | 387cc6f0df7d41e737837bf07830a2e1f6c7c694 (diff) | |
download | FreeBSD-src-e8f5de8393c98b0c32602246d41e2181100dcd9d.zip FreeBSD-src-e8f5de8393c98b0c32602246d41e2181100dcd9d.tar.gz |
Use queue(3) LIST_* macros for doubly-linked lists.
Diffstat (limited to 'lib/libalias/alias_db.c')
-rw-r--r-- | lib/libalias/alias_db.c | 83 |
1 files changed, 18 insertions, 65 deletions
diff --git a/lib/libalias/alias_db.c b/lib/libalias/alias_db.c index 8cf7da5..c531bf7 100644 --- a/lib/libalias/alias_db.c +++ b/lib/libalias/alias_db.c @@ -125,6 +125,7 @@ #include <stdio.h> #include <unistd.h> +#include <sys/queue.h> #include <sys/socket.h> #include <sys/time.h> #include <sys/types.h> @@ -293,12 +294,8 @@ struct alias_link /* Main data structure */ int sockfd; /* socket descriptor */ - u_int start_point_out; /* Index number in output lookup table */ - u_int start_point_in; - struct alias_link *next_out; /* Linked list pointers for input and */ - struct alias_link *last_out; /* output tables */ - struct alias_link *next_in; /* . */ - struct alias_link *last_in; /* . */ + LIST_ENTRY(alias_link) list_out; /* Linked list of pointers for */ + LIST_ENTRY(alias_link) list_in; /* input and output lookup tables */ union /* Auxiliary data */ { @@ -331,10 +328,10 @@ static struct in_addr targetAddress; /* IP address incoming packets */ static struct in_addr nullAddress; /* Used as a dummy parameter for */ /* some function calls */ -static struct alias_link * +static LIST_HEAD(, alias_link) linkTableOut[LINK_TABLE_OUT_SIZE]; /* Lookup table of pointers to */ /* chains of link records. Each */ -static struct alias_link * /* link record is doubly indexed */ +static LIST_HEAD(, alias_link) /* link record is doubly indexed */ linkTableIn[LINK_TABLE_IN_SIZE]; /* into input and output lookup */ /* tables. */ @@ -825,11 +822,11 @@ CleanupAliasData(void) icount = 0; for (i=0; i<LINK_TABLE_OUT_SIZE; i++) { - link = linkTableOut[i]; + link = LIST_FIRST(&linkTableOut[i]); while (link != NULL) { struct alias_link *link_next; - link_next = link->next_out; + link_next = LIST_NEXT(link, list_out); icount++; DeleteLink(link); link = link_next; @@ -847,13 +844,13 @@ IncrementalCleanup(void) struct alias_link *link; icount = 0; - link = linkTableOut[cleanupIndex++]; + link = LIST_FIRST(&linkTableOut[cleanupIndex++]); while (link != NULL) { int idelta; struct alias_link *link_next; - link_next = link->next_out; + link_next = LIST_NEXT(link, list_out); idelta = timeStamp - link->timestamp; switch (link->link_type) { @@ -886,11 +883,9 @@ IncrementalCleanup(void) cleanupIndex = 0; } -void +static void DeleteLink(struct alias_link *link) { - struct alias_link *link_last; - struct alias_link *link_next; /* Don't do anything if the link is marked permanent */ if (deleteAllLinks == 0 && link->flags & LINK_PERMANENT) @@ -913,28 +908,10 @@ DeleteLink(struct alias_link *link) } /* Adjust output table pointers */ - link_last = link->last_out; - link_next = link->next_out; - - if (link_last != NULL) - link_last->next_out = link_next; - else - linkTableOut[link->start_point_out] = link_next; - - if (link_next != NULL) - link_next->last_out = link_last; + LIST_REMOVE(link, list_out); /* Adjust input table pointers */ - link_last = link->last_in; - link_next = link->next_in; - - if (link_last != NULL) - link_last->next_in = link_next; - else - linkTableIn[link->start_point_in] = link_next; - - if (link_next != NULL) - link_next->last_in = link_last; + LIST_REMOVE(link, list_in); /* Close socket, if one has been allocated */ if (link->sockfd != -1) @@ -997,7 +974,6 @@ AddLink(struct in_addr src_addr, { /* chosen. If greater than */ u_int start_point; /* zero, equal to alias port */ struct alias_link *link; - struct alias_link *first_link; link = malloc(sizeof(struct alias_link)); if (link != NULL) @@ -1060,29 +1036,11 @@ AddLink(struct in_addr src_addr, /* Set up pointers for output lookup table */ start_point = StartPointOut(src_addr, dst_addr, src_port, dst_port, link_type); - first_link = linkTableOut[start_point]; - - link->last_out = NULL; - link->next_out = first_link; - link->start_point_out = start_point; - - if (first_link != NULL) - first_link->last_out = link; - - linkTableOut[start_point] = link; + LIST_INSERT_HEAD(&linkTableOut[start_point], link, list_out); /* Set up pointers for input lookup table */ start_point = StartPointIn(alias_addr, link->alias_port, link_type); - first_link = linkTableIn[start_point]; - - link->last_in = NULL; - link->next_in = first_link; - link->start_point_in = start_point; - - if (first_link != NULL) - first_link->last_in = link; - - linkTableIn[start_point] = link; + LIST_INSERT_HEAD(&linkTableIn[start_point], link, list_in); /* Link-type dependent initialization */ switch(link_type) @@ -1190,8 +1148,7 @@ _FindLinkOut(struct in_addr src_addr, struct alias_link *link; i = StartPointOut(src_addr, dst_addr, src_port, dst_port, link_type); - link = linkTableOut[i]; - while (link != NULL) + LIST_FOREACH(link, &linkTableOut[i], list_out) { if (link->src_addr.s_addr == src_addr.s_addr && link->server == NULL @@ -1203,7 +1160,6 @@ _FindLinkOut(struct in_addr src_addr, link->timestamp = timeStamp; break; } - link = link->next_out; } /* Search for partially specified links. */ @@ -1299,8 +1255,7 @@ _FindLinkIn(struct in_addr dst_addr, /* Search loop */ start_point = StartPointIn(alias_addr, alias_port, link_type); - link = linkTableIn[start_point]; - while (link != NULL) + LIST_FOREACH(link, &linkTableIn[start_point], list_in) { int flags; @@ -1350,7 +1305,6 @@ _FindLinkIn(struct in_addr dst_addr, link_unknown_dst_port = link; } } - link = link->next_in; } @@ -2554,9 +2508,9 @@ PacketAliasInit(void) houseKeepingResidual = 0; for (i=0; i<LINK_TABLE_OUT_SIZE; i++) - linkTableOut[i] = NULL; + LIST_INIT(&linkTableOut[i]); for (i=0; i<LINK_TABLE_IN_SIZE; i++) - linkTableIn[i] = NULL; + LIST_INIT(&linkTableIn[i]); atexit(PacketAliasUninit); firstCall = 0; @@ -2649,7 +2603,6 @@ PacketAliasCheckNewLink(void) ****************/ /* Firewall include files */ -#include <sys/queue.h> #include <net/if.h> #include <netinet/ip_fw.h> #include <string.h> |