hi all i am a new commer of linux community. i want to how does skb->tcindex value change exactly. it confused me indeed. i have a script reads: (1) tc qdisc add dev eth0 root handle 1:0 dsmark indices 64 default_index 0x161 set_tc_index (2) tc filter add dev eth0 parent 1:0 protocol all prio 1 tcindex mask 0xfc shift 2 pass_on (3) tc filter add dev eth0 parent 1:0 prio 1 handle 0x0a tcindex classid 1:111 (4) tc filter add dev eth0 parent 2:0 protocol all prio 1 tcindex mask 0xf0 shift 4 pass_on (5) tc filter add dev eth0 parent 2:0 prio 1 handle 1 tcindex classid 2:2 now if a packet with a Diffserv field 0x28 , its skb->tcindex value will be change into 0xa by masking 0xfc and shift 2. Is that so? then it'll be match by the filter defined in line (3) and got a classid 1:111, now what is its skb->tcindex value then in binary ? is it 0001,0001,0001 or in hex 0x111 ? i think that skb->tcindex value is only 8bits. is that so? if after line (3), its skb->tcindex value is 0x111, then after line (4), its skb->tcindex value should be 0x1 , right? now, in line (5), because its skb->tcindex value is 0x1, it is directed into class 2:2, right? ok ,what is its skb->tcindex value now ? 0x2 or 0x111 ? thanks for answer these quesions :) Folke ,S f��)��+-��L)��Y���=jya���f��f�v�Z�_�j)fj��b��?���ps�L�m������r��
