On Mon 08 Feb 2021 at 15:25, Marcelo Ricardo Leitner <marcelo.leit...@gmail.com> wrote: > On Mon, Feb 08, 2021 at 10:21:21AM +0200, Vlad Buslov wrote: >> >> On Sat 06 Feb 2021 at 20:13, Marcelo Ricardo Leitner >> <marcelo.leit...@gmail.com> wrote: >> > Hi, >> > >> > I didn't receive the cover letter, so I'm replying on this one. :-) >> > >> > This is nice. One thing is not clear to me yet. From the samples on >> > the cover letter: >> > >> > $ tc -s filter show dev enp8s0f0_1 ingress >> > filter protocol ip pref 4 flower chain 0 >> > filter protocol ip pref 4 flower chain 0 handle 0x1 >> > dst_mac 0a:40:bd:30:89:99 >> > src_mac ca:2e:a7:3f:f5:0f >> > eth_type ipv4 >> > ip_tos 0/0x3 >> > ip_flags nofrag >> > in_hw in_hw_count 1 >> > action order 1: tunnel_key set >> > src_ip 7.7.7.5 >> > dst_ip 7.7.7.1 >> > ... >> > >> > $ tc -s filter show dev vxlan_sys_4789 ingress >> > filter protocol ip pref 4 flower chain 0 >> > filter protocol ip pref 4 flower chain 0 handle 0x1 >> > dst_mac ca:2e:a7:3f:f5:0f >> > src_mac 0a:40:bd:30:89:99 >> > eth_type ipv4 >> > enc_dst_ip 7.7.7.5 >> > enc_src_ip 7.7.7.1 >> > enc_key_id 98 >> > enc_dst_port 4789 >> > enc_tos 0 >> > ... >> > >> > These operations imply that 7.7.7.5 is configured on some interface on >> > the host. Most likely the VF representor itself, as that aids with ARP >> > resolution. Is that so? >> > >> > Thanks, >> > Marcelo >> >> Hi Marcelo, >> >> The tunnel endpoint IP address is configured on VF that is represented >> by enp8s0f0_0 representor in example rules. The VF is on host. > > That's interesting and odd. The VF would be isolated by a netns and > not be visible by whoever is administrating the VF representor. Some > cooperation between the two entities (host and container, say) is > needed then, right? Because the host needs to know the endpoint IP > address that the container will be using, and vice-versa. If so, why > not offload the tunnel actions via the VF itself and avoid this need > for cooperation? Container privileges maybe? > > Thx, > Marcelo
As I wrote in previous email, tunnel endpoint VF is on host (not in namespace/container, VM, etc.).
