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disable the MSS fixup hack by default (most ISPs don't require this as a workaround for MTU problems, only some do). this should give a nice speedup for routing on standard-compliant ISPs

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13788 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2008-12-31 19:02:03 +00:00
parent f2f0d88023
commit e8530f33a9
2 changed files with 9 additions and 1 deletions
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5
package/firewall/files/firewall.config
View File

@ -21,6 +21,11 @@ config forwarding
option src lan
option dest wan
## Enable this option if you encounter any MTU problems
## e.g. some websites work, others do not, submitting
## forms causes problems, ...
# option mtu_fix 1
### EXAMPLE CONFIG SECTIONS
# do not allow a specific ip to access wan

5
package/firewall/files/uci_firewall.sh
View File

@ -41,6 +41,7 @@ create_zone() {
config_set $ZONE_LIST $1 1
$IPTABLES -N zone_$1
$IPTABLES -N zone_$1_MSSFIX
$IPTABLES -N zone_$1_ACCEPT
$IPTABLES -N zone_$1_DROP
$IPTABLES -N zone_$1_REJECT
@ -60,6 +61,7 @@ addif() {
[ -n "$dev" -a "$dev" == "$1" ] && return
logger "adding $1 to firewall zone $2"
$IPTABLES -A input -i $1 -j zone_$2
$IPTABLES -I zone_$2_MSSFIX 1 -o $1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
$IPTABLES -I zone_$2_ACCEPT 1 -o $1 -j ACCEPT
$IPTABLES -I zone_$2_DROP 1 -o $1 -j DROP
$IPTABLES -I zone_$2_REJECT 1 -o $1 -j reject
@ -147,7 +149,6 @@ fw_defaults() {
$IPTABLES -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
$IPTABLES -A FORWARD -m state --state INVALID -j DROP
$IPTABLES -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
$IPTABLES -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
$IPTABLES -A INPUT -i lo -j ACCEPT
@ -250,9 +251,11 @@ fw_forwarding() {
config_get src $1 src
config_get dest $1 dest
config_get_bool mtu_fix $1 mtu_fix 0
[ -n "$src" ] && z_src=zone_${src}_forward || z_src=forward
[ -n "$dest" ] && z_dest=zone_${dest}_ACCEPT || z_dest=ACCEPT
$IPTABLES -I $z_src 1 -j $z_dest
[ "$mtu_fix" -gt 0 -a -n "$dest" ] && $IPTABLES -I $z_src 1 -j zone_${dest}_MSSFIX
}
fw_redirect() {