On 8/9/23 11:25 PM, Ziyang Xuan wrote:
When use bpf_skb_adjust_room() to encapsulate or decapsulate packet, and outer protocol changed, we can update h_proto of ethhdr directly.
My mailbox somehow lost patch 1/2. Looks like current bpf_skb_adjust_room() only changes skb meta data and tries not to modify the packet. Probably there is a reason for this.
$./test_tc_tunnel.sh ipip encap 192.168.1.1 to 192.168.1.2, type ipip, mac none len 100 test basic connectivity 0 test bpf encap without decap (expect failure) Ncat: TIMEOUT. 1 test bpf encap with tunnel device decap 0 test bpf encap with bpf decap 0 OK ipip6
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