map: make tunnel encapsulation limit support configurable (FS#1501)
Be compatible with ISPs which don't support the destination option header containing the tunnel encapsulation limit as reported in FS#1501. Setting the uci parameter encaplimit to ignore; allows to disable the insertion of the destination option header in the map-e packets. Otherwise the tunnel encapsulation limit value can be set to a value from 0 till 255 by setting the encaplimit uci parameter accordingly. If no encaplimit value is specified the default value is 4 as before. Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
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2 changed files with 10 additions and 8 deletions
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
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PKG_NAME:=map
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PKG_VERSION:=4
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PKG_RELEASE:=10
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PKG_RELEASE:=11
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PKG_LICENSE:=GPL-2.0
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include $(INCLUDE_DIR)/package.mk
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@ -28,9 +28,9 @@ proto_map_setup() {
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# uncomment for legacy MAP0 mode
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#export LEGACY=1
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local type mtu ttl tunlink zone
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local type mtu ttl tunlink zone encaplimit
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local rule ipaddr ip4prefixlen ip6prefix ip6prefixlen peeraddr ealen psidlen psid offset
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json_get_vars type mtu ttl tunlink zone
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json_get_vars type mtu ttl tunlink zone encaplimit
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json_get_vars rule ipaddr ip4prefixlen ip6prefix ip6prefixlen peeraddr ealen psidlen psid offset
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[ -z "$zone" ] && zone="wan"
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@ -84,9 +84,9 @@ proto_map_setup() {
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json_add_string local $(eval "echo \$RULE_${k}_IPV6ADDR")
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json_add_string remote $(eval "echo \$RULE_${k}_BR")
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json_add_string link $(eval "echo \$RULE_${k}_PD6IFACE")
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if [ "$type" = "map-e" ]; then
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json_add_object "data"
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json_add_object "data"
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json_add_string encaplimit "${encaplimit:-4}"
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if [ "$type" = "map-e" ]; then
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json_add_array "fmrs"
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for i in $(seq $RULE_COUNT); do
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[ "$(eval "echo \$RULE_${i}_FMR")" != 1 ] && continue
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@ -98,8 +98,9 @@ proto_map_setup() {
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json_close_object
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done
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json_close_array
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json_close_object
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fi
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fi
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json_close_object
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proto_close_tunnel
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elif [ "$type" = "map-t" -a -f "/proc/net/nat46/control" ]; then
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@ -229,6 +230,7 @@ proto_map_init_config() {
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proto_config_add_int "mtu"
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proto_config_add_int "ttl"
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proto_config_add_string "zone"
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proto_config_add_string "encaplimit"
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}
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[ -n "$INCLUDE_ONLY" ] || {
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