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-rw-r--r--nest/a-set.c743
1 files changed, 0 insertions, 743 deletions
diff --git a/nest/a-set.c b/nest/a-set.c
deleted file mode 100644
index 40ed573c..00000000
--- a/nest/a-set.c
+++ /dev/null
@@ -1,743 +0,0 @@
-/*
- * BIRD -- Set/Community-list Operations
- *
- * (c) 2000 Martin Mares <mj@ucw.cz>
- * (c) 2000 Pavel Machek <pavel@ucw.cz>
- *
- * Can be freely distributed and used under the terms of the GNU GPL.
- */
-
-#include <stdlib.h>
-
-#include "nest/bird.h"
-#include "nest/route.h"
-#include "nest/attrs.h"
-#include "lib/resource.h"
-#include "lib/string.h"
-
-/**
- * int_set_format - format an &set for printing
- * @set: set attribute to be formatted
- * @way: style of format (0 for router ID list, 1 for community list)
- * @from: starting position in set
- * @buf: destination buffer
- * @size: size of buffer
- *
- * This function takes a set attribute and formats it. @way specifies
- * the style of format (router ID / community). @from argument can be
- * used to specify the first printed value for the purpose of printing
- * untruncated sets even with smaller buffers. If the output fits in
- * the buffer, 0 is returned, otherwise the position of the first not
- * printed item is returned. This value can be used as @from argument
- * in subsequent calls. If truncated output suffices, -1 can be
- * instead used as @from, in that case " ..." is eventually added at
- * the buffer to indicate truncation.
- */
-int
-int_set_format(const struct adata *set, int way, int from, byte *buf, uint size)
-{
- u32 *z = (u32 *) set->data;
- byte *end = buf + size - 24;
- int from2 = MAX(from, 0);
- int to = set->length / 4;
- int i;
-
- for (i = from2; i < to; i++)
- {
- if (buf > end)
- {
- if (from < 0)
- strcpy(buf, " ...");
- else
- *buf = 0;
- return i;
- }
-
- if (i > from2)
- *buf++ = ' ';
-
- if (way)
- buf += bsprintf(buf, "(%d,%d)", z[i] >> 16, z[i] & 0xffff);
- else
- buf += bsprintf(buf, "%R", z[i]);
- }
- *buf = 0;
- return 0;
-}
-
-int
-ec_format(byte *buf, u64 ec)
-{
- u32 type, key, val;
- char tbuf[16];
- const char *kind;
-
- type = ec >> 48;
- kind = ec_subtype_str(type & 0xf0ff);
-
- if (!kind) {
- bsprintf(tbuf, "unknown 0x%x", type);
- kind = tbuf;
- }
-
- switch (ec >> 56)
- {
- /* RFC 4360 3.1. Two-Octet AS Specific Extended Community */
- case 0x00:
- case 0x40:
- key = (ec >> 32) & 0xFFFF;
- val = ec;
- return bsprintf(buf, "(%s, %u, %u)", kind, key, val);
-
- /* RFC 4360 3.2. IPv4 Address Specific Extended Community */
- case 0x01:
- case 0x41:
- key = ec >> 16;
- val = ec & 0xFFFF;
- return bsprintf(buf, "(%s, %R, %u)", kind, key, val);
-
- /* RFC 5668 4-Octet AS Specific BGP Extended Community */
- case 0x02:
- case 0x42:
- key = ec >> 16;
- val = ec & 0xFFFF;
- return bsprintf(buf, "(%s, %u, %u)", kind, key, val);
-
- /* Generic format for unknown kinds of extended communities */
- default:
- key = ec >> 32;
- val = ec;
- return bsprintf(buf, "(generic, 0x%x, 0x%x)", key, val);
- }
-
-}
-
-int
-ec_set_format(const struct adata *set, int from, byte *buf, uint size)
-{
- u32 *z = int_set_get_data(set);
- byte *end = buf + size - 64;
- int from2 = MAX(from, 0);
- int to = int_set_get_size(set);
- int i;
-
- for (i = from2; i < to; i += 2)
- {
- if (buf > end)
- {
- if (from < 0)
- strcpy(buf, " ...");
- else
- *buf = 0;
- return i;
- }
-
- if (i > from2)
- *buf++ = ' ';
-
- buf += ec_format(buf, ec_get(z, i));
- }
- *buf = 0;
- return 0;
-}
-
-int
-lc_format(byte *buf, lcomm lc)
-{
- return bsprintf(buf, "(%u, %u, %u)", lc.asn, lc.ldp1, lc.ldp2);
-}
-
-int
-lc_set_format(const struct adata *set, int from, byte *buf, uint bufsize)
-{
- u32 *d = (u32 *) set->data;
- byte *end = buf + bufsize - 64;
- int from2 = MAX(from, 0);
- int to = set->length / 4;
- int i;
-
- for (i = from2; i < to; i += 3)
- {
- if (buf > end)
- {
- if (from < 0)
- strcpy(buf, "...");
- else
- buf[-1] = 0;
- return i;
- }
-
- buf += bsprintf(buf, "(%u, %u, %u)", d[i], d[i+1], d[i+2]);
- *buf++ = ' ';
- }
-
- if (i != from2)
- buf--;
-
- *buf = 0;
- return 0;
-}
-
-int
-int_set_contains(const struct adata *list, u32 val)
-{
- if (!list)
- return 0;
-
- u32 *l = (u32 *) list->data;
- int len = int_set_get_size(list);
- int i;
-
- for (i = 0; i < len; i++)
- if (*l++ == val)
- return 1;
-
- return 0;
-}
-
-int
-ec_set_contains(const struct adata *list, u64 val)
-{
- if (!list)
- return 0;
-
- u32 *l = int_set_get_data(list);
- int len = int_set_get_size(list);
- u32 eh = ec_hi(val);
- u32 el = ec_lo(val);
- int i;
-
- for (i=0; i < len; i += 2)
- if (l[i] == eh && l[i+1] == el)
- return 1;
-
- return 0;
-}
-
-int
-lc_set_contains(const struct adata *list, lcomm val)
-{
- if (!list)
- return 0;
-
- u32 *l = int_set_get_data(list);
- int len = int_set_get_size(list);
- int i;
-
- for (i = 0; i < len; i += 3)
- if (lc_match(l, i, val))
- return 1;
-
- return 0;
-}
-
-const struct adata *
-int_set_prepend(struct linpool *pool, const struct adata *list, u32 val)
-{
- struct adata *res;
- int len;
-
- if (int_set_contains(list, val))
- return list;
-
- len = list ? list->length : 0;
- res = lp_alloc(pool, sizeof(struct adata) + len + 4);
- res->length = len + 4;
-
- if (list)
- memcpy(res->data + 4, list->data, list->length);
-
- * (u32 *) res->data = val;
-
- return res;
-}
-
-const struct adata *
-int_set_add(struct linpool *pool, const struct adata *list, u32 val)
-{
- struct adata *res;
- int len;
-
- if (int_set_contains(list, val))
- return list;
-
- len = list ? list->length : 0;
- res = lp_alloc(pool, sizeof(struct adata) + len + 4);
- res->length = len + 4;
-
- if (list)
- memcpy(res->data, list->data, list->length);
-
- * (u32 *) (res->data + len) = val;
-
- return res;
-}
-
-const struct adata *
-ec_set_add(struct linpool *pool, const struct adata *list, u64 val)
-{
- if (ec_set_contains(list, val))
- return list;
-
- int olen = list ? list->length : 0;
- struct adata *res = lp_alloc(pool, sizeof(struct adata) + olen + 8);
- res->length = olen + 8;
-
- if (list)
- memcpy(res->data, list->data, list->length);
-
- u32 *l = (u32 *) (res->data + olen);
- l[0] = ec_hi(val);
- l[1] = ec_lo(val);
-
- return res;
-}
-
-const struct adata *
-lc_set_add(struct linpool *pool, const struct adata *list, lcomm val)
-{
- if (lc_set_contains(list, val))
- return list;
-
- int olen = list ? list->length : 0;
- struct adata *res = lp_alloc(pool, sizeof(struct adata) + olen + LCOMM_LENGTH);
- res->length = olen + LCOMM_LENGTH;
-
- if (list)
- memcpy(res->data, list->data, list->length);
-
- lc_put((u32 *) (res->data + olen), val);
-
- return res;
-}
-
-const struct adata *
-int_set_del(struct linpool *pool, const struct adata *list, u32 val)
-{
- if (!int_set_contains(list, val))
- return list;
-
- struct adata *res;
- res = lp_alloc(pool, sizeof(struct adata) + list->length - 4);
- res->length = list->length - 4;
-
- u32 *l = int_set_get_data(list);
- u32 *k = int_set_get_data(res);
- int len = int_set_get_size(list);
- int i;
-
- for (i = 0; i < len; i++)
- if (l[i] != val)
- *k++ = l[i];
-
- return res;
-}
-
-const struct adata *
-ec_set_del(struct linpool *pool, const struct adata *list, u64 val)
-{
- if (!ec_set_contains(list, val))
- return list;
-
- struct adata *res;
- res = lp_alloc(pool, sizeof(struct adata) + list->length - 8);
- res->length = list->length - 8;
-
- u32 *l = int_set_get_data(list);
- u32 *k = int_set_get_data(res);
- int len = int_set_get_size(list);
- u32 eh = ec_hi(val);
- u32 el = ec_lo(val);
- int i;
-
- for (i=0; i < len; i += 2)
- if (! (l[i] == eh && l[i+1] == el))
- {
- *k++ = l[i];
- *k++ = l[i+1];
- }
-
- return res;
-}
-
-const struct adata *
-lc_set_del(struct linpool *pool, const struct adata *list, lcomm val)
-{
- if (!lc_set_contains(list, val))
- return list;
-
- struct adata *res;
- res = lp_alloc(pool, sizeof(struct adata) + list->length - LCOMM_LENGTH);
- res->length = list->length - LCOMM_LENGTH;
-
- u32 *l = int_set_get_data(list);
- u32 *k = int_set_get_data(res);
- int len = int_set_get_size(list);
- int i;
-
- for (i=0; i < len; i += 3)
- if (! lc_match(l, i, val))
- k = lc_copy(k, l+i);
-
- return res;
-}
-
-const struct adata *
-int_set_union(struct linpool *pool, const struct adata *l1, const struct adata *l2)
-{
- if (!l1)
- return l2;
- if (!l2)
- return l1;
-
- struct adata *res;
- int len = int_set_get_size(l2);
- u32 *l = int_set_get_data(l2);
- u32 tmp[len];
- u32 *k = tmp;
- int i;
-
- for (i = 0; i < len; i++)
- if (!int_set_contains(l1, l[i]))
- *k++ = l[i];
-
- if (k == tmp)
- return l1;
-
- len = (k - tmp) * 4;
- res = lp_alloc(pool, sizeof(struct adata) + l1->length + len);
- res->length = l1->length + len;
- memcpy(res->data, l1->data, l1->length);
- memcpy(res->data + l1->length, tmp, len);
- return res;
-}
-
-const struct adata *
-ec_set_union(struct linpool *pool, const struct adata *l1, const struct adata *l2)
-{
- if (!l1)
- return l2;
- if (!l2)
- return l1;
-
- struct adata *res;
- int len = int_set_get_size(l2);
- u32 *l = int_set_get_data(l2);
- u32 tmp[len];
- u32 *k = tmp;
- int i;
-
- for (i = 0; i < len; i += 2)
- if (!ec_set_contains(l1, ec_get(l, i)))
- {
- *k++ = l[i];
- *k++ = l[i+1];
- }
-
- if (k == tmp)
- return l1;
-
- len = (k - tmp) * 4;
- res = lp_alloc(pool, sizeof(struct adata) + l1->length + len);
- res->length = l1->length + len;
- memcpy(res->data, l1->data, l1->length);
- memcpy(res->data + l1->length, tmp, len);
- return res;
-}
-
-const struct adata *
-lc_set_union(struct linpool *pool, const struct adata *l1, const struct adata *l2)
-{
- if (!l1)
- return l2;
- if (!l2)
- return l1;
-
- struct adata *res;
- int len = int_set_get_size(l2);
- u32 *l = int_set_get_data(l2);
- u32 tmp[len];
- u32 *k = tmp;
- int i;
-
- for (i = 0; i < len; i += 3)
- if (!lc_set_contains(l1, lc_get(l, i)))
- k = lc_copy(k, l+i);
-
- if (k == tmp)
- return l1;
-
- len = (k - tmp) * 4;
- res = lp_alloc(pool, sizeof(struct adata) + l1->length + len);
- res->length = l1->length + len;
- memcpy(res->data, l1->data, l1->length);
- memcpy(res->data + l1->length, tmp, len);
- return res;
-}
-
-
-struct adata *
-ec_set_del_nontrans(struct linpool *pool, const struct adata *set)
-{
- adata *res = lp_alloc_adata(pool, set->length);
- u32 *src = int_set_get_data(set);
- u32 *dst = int_set_get_data(res);
- int len = int_set_get_size(set);
- int i;
-
- /* Remove non-transitive communities (EC_TBIT set) */
- for (i = 0; i < len; i += 2)
- {
- if (src[i] & EC_TBIT)
- continue;
-
- *dst++ = src[i];
- *dst++ = src[i+1];
- }
-
- res->length = ((byte *) dst) - res->data;
-
- return res;
-}
-
-static int
-int_set_cmp(const void *X, const void *Y)
-{
- const u32 *x = X, *y = Y;
- return (*x < *y) ? -1 : (*x > *y) ? 1 : 0;
-}
-
-struct adata *
-int_set_sort(struct linpool *pool, const struct adata *src)
-{
- struct adata *dst = lp_alloc_adata(pool, src->length);
- memcpy(dst->data, src->data, src->length);
- qsort(dst->data, dst->length / 4, 4, int_set_cmp);
- return dst;
-}
-
-int
-int_set_min(const struct adata *list, u32 *val)
-{
- if (!list)
- return 0;
-
- u32 *l = (u32 *) list->data;
- int len = int_set_get_size(list);
- int i;
-
- if (len < 1)
- return 0;
-
- *val = *l++;
- for (i = 1; i < len; i++, l++)
- if (int_set_cmp(val, l) > 0)
- *val = *l;
-
- return 1;
-}
-
-int
-int_set_max(const struct adata *list, u32 *val)
-{
- if (!list)
- return 0;
-
- u32 *l = (u32 *) list->data;
- int len = int_set_get_size(list);
- int i;
-
- if (len < 1)
- return 0;
-
- *val = *l++;
- for (i = 1; i < len; i++, l++)
- if (int_set_cmp(val, l) < 0)
- *val = *l;
-
- return 1;
-}
-
-
-static int
-ec_set_cmp(const void *X, const void *Y)
-{
- u64 x = ec_get(X, 0);
- u64 y = ec_get(Y, 0);
- return (x < y) ? -1 : (x > y) ? 1 : 0;
-}
-
-struct adata *
-ec_set_sort(struct linpool *pool, const struct adata *src)
-{
- struct adata *dst = lp_alloc_adata(pool, src->length);
- memcpy(dst->data, src->data, src->length);
- qsort(dst->data, dst->length / 8, 8, ec_set_cmp);
- return dst;
-}
-
-void
-ec_set_sort_x(struct adata *set)
-{
- /* Sort in place */
- qsort(set->data, set->length / 8, 8, ec_set_cmp);
-}
-
-int
-ec_set_min(const struct adata *list, u64 *val)
-{
- if (!list)
- return 0;
-
- u32 *l = int_set_get_data(list);
- int len = int_set_get_size(list);
- int i;
-
- if (len < 1)
- return 0;
-
- u32 *res = l; l += 2;
- for (i = 2; i < len; i += 2, l += 2)
- if (ec_set_cmp(res, l) > 0)
- res = l;
-
- *val = ec_generic(res[0], res[1]);
- return 1;
-}
-
-int
-ec_set_max(const struct adata *list, u64 *val)
-{
- if (!list)
- return 0;
-
- u32 *l = int_set_get_data(list);
- int len = int_set_get_size(list);
- int i;
-
- if (len < 1)
- return 0;
-
- u32 *res = l; l += 2;
- for (i = 2; i < len; i += 2, l += 2)
- if (ec_set_cmp(res, l) < 0)
- res = l;
-
- *val = ec_generic(res[0], res[1]);
- return 1;
-}
-
-
-static int
-lc_set_cmp(const void *X, const void *Y)
-{
- const u32 *x = X, *y = Y;
- if (x[0] != y[0])
- return (x[0] > y[0]) ? 1 : -1;
- if (x[1] != y[1])
- return (x[1] > y[1]) ? 1 : -1;
- if (x[2] != y[2])
- return (x[2] > y[2]) ? 1 : -1;
- return 0;
-}
-
-struct adata *
-lc_set_sort(struct linpool *pool, const struct adata *src)
-{
- struct adata *dst = lp_alloc_adata(pool, src->length);
- memcpy(dst->data, src->data, src->length);
- qsort(dst->data, dst->length / LCOMM_LENGTH, LCOMM_LENGTH, lc_set_cmp);
- return dst;
-}
-
-int
-lc_set_min(const struct adata *list, lcomm *val)
-{
- if (!list)
- return 0;
-
- u32 *l = int_set_get_data(list);
- int len = int_set_get_size(list);
- int i;
-
- if (len < 1)
- return 0;
-
- u32 *res = l; l += 3;
- for (i = 3; i < len; i += 3, l += 3)
- if (lc_set_cmp(res, l) > 0)
- res = l;
-
- *val = (lcomm) { res[0], res[1], res[2] };
- return 1;
-}
-
-int
-lc_set_max(const struct adata *list, lcomm *val)
-{
- if (!list)
- return 0;
-
- u32 *l = int_set_get_data(list);
- int len = int_set_get_size(list);
- int i;
-
- if (len < 1)
- return 0;
-
- u32 *res = l; l += 3;
- for (i = 3; i < len; i += 3, l += 3)
- if (lc_set_cmp(res, l) < 0)
- res = l;
-
- *val = (lcomm) { res[0], res[1], res[2] };
- return 1;
-}
-
-int
-int_set_walk(const struct adata *list, uint *pos, uint *val)
-{
- if (!list)
- return 0;
-
- if (*pos >= (uint) int_set_get_size(list))
- return 0;
-
- u32 *res = int_set_get_data(list) + *pos;
- *val = *res;
- *pos += 1;
-
- return 1;
-}
-
-int
-ec_set_walk(const struct adata *list, uint *pos, u64 *val)
-{
- if (!list)
- return 0;
-
- if (*pos >= (uint) int_set_get_size(list))
- return 0;
-
- u32 *res = int_set_get_data(list) + *pos;
- *val = ec_generic(res[0], res[1]);
- *pos += 2;
-
- return 1;
-}
-
-int
-lc_set_walk(const struct adata *list, uint *pos, lcomm *val)
-{
- if (!list)
- return 0;
-
- if (*pos >= (uint) int_set_get_size(list))
- return 0;
-
- u32 *res = int_set_get_data(list) + *pos;
- *val = (lcomm) { res[0], res[1], res[2] };
- *pos += 3;
-
- return 1;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 06:55:58 +0000