Hi I need to modify the tos field of ipv4 frames. The rule I currently have for this looks something like: ovs-ofctl add-flow br0-wlan0 "table=20 priority=100 dl_type=0x0800 nw_tos=32 actions=mod_nw_tos:224"
I only want to match the upper most 3 bits of the DSCP field. This rule as it is has the obvious drawback of the rule only matching when the lower 3 bits are 0. When I try to create a rule with: ovs-ofctl add-flow br0-wlan0 "table=22 priority=0 dl_type=0x0800 nw_tos=160/0xe0 actions=load:5->nw_tos[5..7]" I get the message; ovs-ofctl: 160/0xe0: invalid mask for field nw_tos The match nw_tos=160/0xff works. The current workaround I have for this is: ovs-ofctl add-flow br0 "table=0 priority=0 in_port=2 actions=resubmit(,20),resubmit(,21),output:1" ovs-ofctl add-flow br0 "table=20 priority=0 dl_type=0x0800 actions=move:NXM_OF_IP_TOS[5..7]->NXM_NX_REG0[0..2]" ovs-ofctl add-flow br0 "table=21 priority=0 dl_type=0x0800 reg0=4 actions=load:5->nw_tos[5..7]" Does anyone have a better idea how to do this? BR Matthias _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
