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authorSteven Barth <cyrus@openwrt.org>2015-05-26 14:36:20 +0000
committerSteven Barth <cyrus@openwrt.org>2015-05-26 14:36:20 +0000
commita28470a3cca487ca8db2342e3dfb23e82510732a (patch)
treeb24b76027ed361b123794cf63cab5e198eab38b4 /package/network/ipv6
parentad73e5cf3579ff2d0026ee0c90d738c4430a3bf9 (diff)
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map: add support for lw4o6 address matching, minor optimizations
Signed-off-by: Steven Barth <steven@midlink.org> SVN-Revision: 45770
Diffstat (limited to 'package/network/ipv6')
-rw-r--r--package/network/ipv6/map/Makefile4
-rw-r--r--package/network/ipv6/map/src/mapcalc.c92
2 files changed, 58 insertions, 38 deletions
diff --git a/package/network/ipv6/map/Makefile b/package/network/ipv6/map/Makefile
index 09ba523..89d34de 100644
--- a/package/network/ipv6/map/Makefile
+++ b/package/network/ipv6/map/Makefile
@@ -8,8 +8,8 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=map
-PKG_VERSION:=3
-PKG_RELEASE:=4
+PKG_VERSION:=4
+PKG_RELEASE:=1
PKG_LICENSE:=GPL-2.0
include $(INCLUDE_DIR)/package.mk
diff --git a/package/network/ipv6/map/src/mapcalc.c b/package/network/ipv6/map/src/mapcalc.c
index b61e157..cd72138 100644
--- a/package/network/ipv6/map/src/mapcalc.c
+++ b/package/network/ipv6/map/src/mapcalc.c
@@ -37,12 +37,14 @@ static const struct blobmsg_policy dump_attrs[DUMP_ATTR_MAX] = {
enum {
IFACE_ATTR_INTERFACE,
IFACE_ATTR_PREFIX,
+ IFACE_ATTR_ADDRESS,
IFACE_ATTR_MAX,
};
static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
[IFACE_ATTR_INTERFACE] = { .name = "interface", .type = BLOBMSG_TYPE_STRING },
[IFACE_ATTR_PREFIX] = { .name = "ipv6-prefix", .type = BLOBMSG_TYPE_ARRAY },
+ [IFACE_ATTR_ADDRESS] = { .name = "ipv6-address", .type = BLOBMSG_TYPE_ARRAY },
};
@@ -109,6 +111,39 @@ static void handle_dump(struct ubus_request *req __attribute__((unused)),
dump = blob_memdup(tb[DUMP_ATTR_INTERFACE]);
}
+static void match_prefix(int *pdlen, struct in6_addr *pd, struct blob_attr *cur,
+ const struct in6_addr *ipv6prefix, int prefix6len)
+{
+ struct blob_attr *d;
+ unsigned drem;
+
+ if (!cur || blobmsg_type(cur) != BLOBMSG_TYPE_ARRAY || !blobmsg_check_attr(cur, NULL))
+ return;
+
+ blobmsg_for_each_attr(d, cur, drem) {
+ struct blob_attr *ptb[PREFIX_ATTR_MAX];
+ blobmsg_parse(prefix_attrs, PREFIX_ATTR_MAX, ptb,
+ blobmsg_data(d), blobmsg_data_len(d));
+
+ if (!ptb[PREFIX_ATTR_ADDRESS] || !ptb[PREFIX_ATTR_MASK])
+ continue;
+
+ struct in6_addr prefix = IN6ADDR_ANY_INIT;
+ int mask = blobmsg_get_u32(ptb[PREFIX_ATTR_MASK]);
+ inet_pton(AF_INET6, blobmsg_get_string(ptb[PREFIX_ATTR_ADDRESS]), &prefix);
+
+ // lw4over6 /128-address-as-PD matching madness workaround
+ if (mask == 128)
+ mask = 64;
+
+ if (*pdlen < mask && mask >= prefix6len &&
+ !bmemcmp(&prefix, ipv6prefix, prefix6len)) {
+ bmemcpy(pd, &prefix, mask);
+ *pdlen = mask;
+ }
+ }
+}
+
enum {
OPT_TYPE,
OPT_FMR,
@@ -226,11 +261,16 @@ int main(int argc, char *argv[])
if (offset < 0)
offset = (lw4o6) ? 0 : (legacy) ? 4 : 6;
- if (lw4o6 && ealen < 0 && psidlen >= 0)
+ // LW4over6 doesn't have an EALEN and has no psid-autodetect
+ if (lw4o6) {
+ if (psidlen < 0)
+ psidlen = 0;
+
ealen = psidlen;
+ }
// Find PD
- struct blob_attr *c, *cur;
+ struct blob_attr *c;
unsigned rem;
blobmsg_for_each_attr(c, dump, rem) {
struct blob_attr *tb[IFACE_ATTR_MAX];
@@ -240,34 +280,14 @@ int main(int argc, char *argv[])
blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]))))
continue;
- if ((cur = tb[IFACE_ATTR_PREFIX])) {
- if (blobmsg_type(cur) != BLOBMSG_TYPE_ARRAY || !blobmsg_check_attr(cur, NULL))
- continue;
-
- struct blob_attr *d;
- unsigned drem;
- blobmsg_for_each_attr(d, cur, drem) {
- struct blob_attr *ptb[PREFIX_ATTR_MAX];
- blobmsg_parse(prefix_attrs, PREFIX_ATTR_MAX, ptb,
- blobmsg_data(d), blobmsg_data_len(d));
-
- if (!ptb[PREFIX_ATTR_ADDRESS] || !ptb[PREFIX_ATTR_MASK])
- continue;
-
- struct in6_addr prefix = IN6ADDR_ANY_INIT;
- int mask = blobmsg_get_u32(ptb[PREFIX_ATTR_MASK]);
- inet_pton(AF_INET6, blobmsg_get_string(ptb[PREFIX_ATTR_ADDRESS]), &prefix);
-
- if (mask >= prefix6len && !bmemcmp(&prefix, &ipv6prefix, prefix6len)) {
- pd = prefix;
- pdlen = mask;
- iface = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
- break;
- }
- }
-
- if (pdlen >= 0)
- break;
+ match_prefix(&pdlen, &pd, tb[IFACE_ATTR_PREFIX], &ipv6prefix, prefix6len);
+
+ if (lw4o6)
+ match_prefix(&pdlen, &pd, tb[IFACE_ATTR_ADDRESS], &ipv6prefix, prefix6len);
+
+ if (pdlen >= 0) {
+ iface = blobmsg_get_string(tb[IFACE_ATTR_INTERFACE]);
+ break;
}
}
@@ -286,6 +306,12 @@ int main(int argc, char *argv[])
psid16 = cpu_to_be16(psid >> (16 - psidlen));
+ if (prefix4len < 0 || prefix6len < 0 || ealen < 0 || ealen < psidlen) {
+ fprintf(stderr, "Skipping invalid or incomplete rule: %s\n", argv[i]);
+ status = 1;
+ continue;
+ }
+
if ((pdlen >= 0 || ealen == psidlen) && ealen >= psidlen) {
bmemcpys64(&ipv4addr, &pd, prefix6len, ealen - psidlen);
ipv4addr.s_addr = htonl(ntohl(ipv4addr.s_addr) >> prefix4len);
@@ -295,12 +321,6 @@ int main(int argc, char *argv[])
addr4len = prefix4len + ealen;
}
- if (prefix4len < 0 || prefix6len < 0 || ealen < 0 || ealen < psidlen) {
- fprintf(stderr, "Skipping invalid or incomplete rule: %s\n", argv[i]);
- status = 1;
- continue;
- }
-
if (pdlen < 0 && !fmr) {
fprintf(stderr, "Skipping non-FMR without matching PD: %s\n", argv[i]);
status = 1;