[v3 PATCH bpf-next 1/4] bpftool: refactor xdp attach/detach type judgment

Tao Chen
2024-07-21T14:34:25Z

This commit no logical changed, just increases code readability and
facilitates TCX prog expansion, which will be implemented in the next
patch.

Acked-by: Quentin Monnet <qmo@kernel.org>
Signed-off-by: Tao Chen <chen.dylane@gmail.com>
---
tools/bpf/bpftool/net.c | 26 +++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/tools/bpf/bpftool/net.c b/tools/bpf/bpftool/net.c
index 968714b4c3d4..1b9f4225b394 100644
--- a/tools/bpf/bpftool/net.c
+++ b/tools/bpf/bpftool/net.c
@@ -684,10 +684,18 @@ static int do_attach(int argc, char **argv)
}
}

+ switch (attach_type) {
/* attach xdp prog */
- if (is_prefix("xdp", attach_type_strings[attach_type]))
- err = do_attach_detach_xdp(progfd, attach_type, ifindex,
- overwrite);
+ case NET_ATTACH_TYPE_XDP:
+ case NET_ATTACH_TYPE_XDP_GENERIC:
+ case NET_ATTACH_TYPE_XDP_DRIVER:
+ case NET_ATTACH_TYPE_XDP_OFFLOAD:
+ err = do_attach_detach_xdp(progfd, attach_type, ifindex, overwrite);
+ break;
+ default:
+ break;
+ }
+
if (err) {
p_err("interface %s attach failed: %s",
attach_type_strings[attach_type], strerror(-err));
@@ -721,10 +729,18 @@ static int do_detach(int argc, char **argv)
if (ifindex < 1)
return -EINVAL;

+ switch (attach_type) {
/* detach xdp prog */
- progfd = -1;
- if (is_prefix("xdp", attach_type_strings[attach_type]))
+ case NET_ATTACH_TYPE_XDP:
+ case NET_ATTACH_TYPE_XDP_GENERIC:
+ case NET_ATTACH_TYPE_XDP_DRIVER:
+ case NET_ATTACH_TYPE_XDP_OFFLOAD:
+ progfd = -1;
err = do_attach_detach_xdp(progfd, attach_type, ifindex, NULL);
+ break;
+ default:
+ break;
+ }

if (err < 0) {
p_err("interface %s detach failed: %s",
--
2.34.1