Yonghong Song <yhs@xxxxxx> 于2022年3月26日周六 00:46写道： > > > > On 3/22/22 8:42 AM, fankaixi.li@xxxxxxxxxxxxx wrote: > > From: "kaixi.fan" <fankaixi.li@xxxxxxxxxxxxx> > > > > Now bpf code could not set tunnel source ip address of ip tunnel. So it > > could not support flow based tunnel mode completely. Because flow based > > tunnel mode could set tunnel source, destination ip address and tunnel > > key simultaneously. > > > > Flow based tunnel is useful for overlay networks. And by configuring tunnel > > source ip address, user could make their networks more elastic. > > For example, tunnel source ip could be used to select different egress > > nic interface for different flows with same tunnel destination ip. Another > > example, user could choose one of multiple ip address of the egress nic > > interface as the packet's tunnel source ip. > > > > v1 -> v2: > > v1: https://lore.kernel.org/bpf/20220319130538.55741-1-fankaixi.li@xxxxxxxxxxxxx > > > > - Add secondary ip and set tunnel remote ip in "add_vxlan_tunnel" and > > "add_ip6vxlan_tunnel" > > > > kaixi.fan (3): > > bpf: Add source ip in "struct bpf_tunnel_key" > > selftests/bpf: add ipv4 vxlan tunnel source testcase > > selftests/bpf: add ipv6 vxlan tunnel source testcase > > > > include/uapi/linux/bpf.h | 4 + > > net/core/filter.c | 9 ++ > > tools/include/uapi/linux/bpf.h | 4 + > > .../selftests/bpf/progs/test_tunnel_kern.c | 115 ++++++++++++++++++ > > tools/testing/selftests/bpf/test_tunnel.sh | 80 +++++++++++- > > 5 files changed, 206 insertions(+), 6 deletions(-) > > The subject "bpf: Add support to set and get" is incomplete. Thanks. Sorry for the confusion. I will fix it.
