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.
