bpf: introduce BPF_F_XDP_HAS_FRAGS flag in prog_flags loading the ebpf program

Introduce BPF_F_XDP_HAS_FRAGS and the related field in bpf_prog_aux in order to notify the driver the loaded program support xdp frags.

Lorenzo Bianconi committed 4 years ago

Commit c2f2cdb1 parent c41ced04 files · +14 −1Browse files

Showing the changes to kernel (1 of 4 files). Show all

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@@ -2217,7 +2217,8 @@ static int bpf_prog_load(union bpf_attr *attr, bpfptr_t uattr) · 2216 unmodified lines
2217	2217	BPF_F_ANY_ALIGNMENT \|
2218	2218	BPF_F_TEST_STATE_FREQ \|
2219	2219	BPF_F_SLEEPABLE \|
2220		− BPF_F_TEST_RND_HI32))
	2220	+ BPF_F_TEST_RND_HI32 \|
	2221	+ BPF_F_XDP_HAS_FRAGS))
2221	2222	return -EINVAL;
2222	2223
2223	2224	if (!IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) &&
@@ -2303,6 +2304,7 @@ static int bpf_prog_load(union bpf_attr *attr, bpfptr_t uattr) · 79 unmodified lines
2303	2304	prog->aux->dst_prog = dst_prog;
2304	2305	prog->aux->offload_requested = !!attr->prog_ifindex;
2305	2306	prog->aux->sleepable = attr->prog_flags & BPF_F_SLEEPABLE;
	2307	+ prog->aux->xdp_has_frags = attr->prog_flags & BPF_F_XDP_HAS_FRAGS;
2306	2308
2307	2309	err = security_bpf_prog_alloc(prog->aux);
2308	2310	if (err)