Introduce support for the following SEC entries for XDP frags
property:
- SEC("xdp.frags")
- SEC("xdp.frags/devmap")
- SEC("xdp.frags/cpumap")
Acked-by: Toke Hoiland-Jorgensen <toke@xxxxxxxxxx>
Acked-by: John Fastabend <john.fastabend@xxxxxxxxx>
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
---
tools/lib/bpf/libbpf.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index fc6d530e20db..a8c750373ad5 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -235,6 +235,8 @@ enum sec_def_flags {
SEC_SLEEPABLE = 8,
/* allow non-strict prefix matching */
SEC_SLOPPY_PFX = 16,
+ /* BPF program support non-linear XDP buffer */
+ SEC_XDP_FRAGS = 32,
};
struct bpf_sec_def {
@@ -6570,6 +6572,9 @@ static int libbpf_preload_prog(struct bpf_program *prog,
if (def & SEC_SLEEPABLE)
opts->prog_flags |= BPF_F_SLEEPABLE;
+ if (prog->type == BPF_PROG_TYPE_XDP && (def & SEC_XDP_FRAGS))
+ opts->prog_flags |= BPF_F_XDP_HAS_FRAGS;
+
if ((prog->type == BPF_PROG_TYPE_TRACING ||
prog->type == BPF_PROG_TYPE_LSM ||
prog->type == BPF_PROG_TYPE_EXT) && !prog->attach_btf_id) {
@@ -8608,8 +8613,11 @@ static const struct bpf_sec_def section_defs[] = {
SEC_DEF("lsm.s/", LSM, BPF_LSM_MAC, SEC_ATTACH_BTF | SEC_SLEEPABLE, attach_lsm),
SEC_DEF("iter/", TRACING, BPF_TRACE_ITER, SEC_ATTACH_BTF, attach_iter),
SEC_DEF("syscall", SYSCALL, 0, SEC_SLEEPABLE),
+ SEC_DEF("xdp.frags/devmap", XDP, BPF_XDP_DEVMAP, SEC_XDP_FRAGS),
SEC_DEF("xdp_devmap/", XDP, BPF_XDP_DEVMAP, SEC_ATTACHABLE),
+ SEC_DEF("xdp.frags/cpumap", XDP, BPF_XDP_CPUMAP, SEC_XDP_FRAGS),
SEC_DEF("xdp_cpumap/", XDP, BPF_XDP_CPUMAP, SEC_ATTACHABLE),
+ SEC_DEF("xdp.frags", XDP, BPF_XDP, SEC_XDP_FRAGS),
SEC_DEF("xdp", XDP, BPF_XDP, SEC_ATTACHABLE_OPT | SEC_SLOPPY_PFX),
SEC_DEF("perf_event", PERF_EVENT, 0, SEC_NONE | SEC_SLOPPY_PFX),
SEC_DEF("lwt_in", LWT_IN, 0, SEC_NONE | SEC_SLOPPY_PFX),
--
2.34.1
