diff options
Diffstat (limited to 'kernel/bpf/helpers.c')
| -rw-r--r-- | kernel/bpf/helpers.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index 9552b32208c5..cdffd74ddbe6 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -1781,7 +1781,8 @@ static int __bpf_dynptr_read(void *dst, u32 len, const struct bpf_dynptr_kern *s case BPF_DYNPTR_TYPE_XDP: return __bpf_xdp_load_bytes(src->data, src->offset + offset, dst, len); case BPF_DYNPTR_TYPE_SKB_META: - return -EOPNOTSUPP; /* not implemented */ + memmove(dst, bpf_skb_meta_pointer(src->data, src->offset + offset), len); + return 0; default: WARN_ONCE(true, "bpf_dynptr_read: unknown dynptr type %d\n", type); return -EFAULT; @@ -1839,7 +1840,10 @@ int __bpf_dynptr_write(const struct bpf_dynptr_kern *dst, u32 offset, void *src, return -EINVAL; return __bpf_xdp_store_bytes(dst->data, dst->offset + offset, src, len); case BPF_DYNPTR_TYPE_SKB_META: - return -EOPNOTSUPP; /* not implemented */ + if (flags) + return -EINVAL; + memmove(bpf_skb_meta_pointer(dst->data, dst->offset + offset), src, len); + return 0; default: WARN_ONCE(true, "bpf_dynptr_write: unknown dynptr type %d\n", type); return -EFAULT; @@ -2716,7 +2720,7 @@ __bpf_kfunc void *bpf_dynptr_slice(const struct bpf_dynptr *p, u32 offset, return buffer__opt; } case BPF_DYNPTR_TYPE_SKB_META: - return NULL; /* not implemented */ + return bpf_skb_meta_pointer(ptr->data, ptr->offset + offset); default: WARN_ONCE(true, "unknown dynptr type %d\n", type); return NULL; |