From: Gabor Juhos Date: Wed, 5 Sep 2012 20:08:42 +0000 (+0000) Subject: ramips: Use doubletagging to disable ramips_esw vlan by default, it seems more reliable. X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=04c6143ca977a71c39dcf471f5a60d93890df649;p=openwrt%2Fstaging%2Fyousong.git ramips: Use doubletagging to disable ramips_esw vlan by default, it seems more reliable. Use doubletagging to disable ramips_esw vlan by default, it seems more reliable. Daniel Golle found an issue where sometimes (possibly only for RT3352) the default vlan disable method (clearing en_vlan, untag, doubletag and putting all ports into vlan 0) doesn't work and the packets get sent out vlan-tagged with vlan 0. Instead switch to using the doubletagging method (allow doubletagged packets, put all ports into vlan 0 with untag enabled) by default. Unless someone figures out a way to really globally disable vlan for this switch, this seems like the best (most reliable) option. I did some tests regarding maximum packet size and did not see any difference between the two methods, both allow for slightly bigger packets than the ramips_main.c ethernet driver (ping stops going through above "ping -s 1472" (1514 bytes), on the switch packets are recv_good until "ping -s 1490", or about 1532 bytes). Signed-off-by: Tobias Diedrich SVN-Revision: 33321 --- diff --git a/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_esw.c b/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_esw.c index 309efdeb78..f01baa1709 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_esw.c +++ b/target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_esw.c @@ -534,7 +534,7 @@ rt305x_esw_apply_config(struct switch_dev *dev) untag |= esw->ports[i].untag << i; pvid = esw->ports[i].pvid; } else { - int x = esw->alt_vlan_disable ? 1 : 0; + int x = esw->alt_vlan_disable ? 0 : 1; doubletag |= x << i; en_vlan |= x << i; untag |= x << i;