diff options
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/bpf.h | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 89b36de5fdbb..c91b5a4bda03 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -5079,17 +5079,19 @@ union bpf_attr { * Description * Redirect the packet to another net device of index *ifindex*. * This helper is somewhat similar to **bpf_redirect**\ (), except - * that the redirection happens to the *ifindex*' peer device and - * the netns switch takes place from ingress to ingress without - * going through the CPU's backlog queue. + * that the redirection happens to the *ifindex*' peer device. If + * *flags* is 0, the netns switch takes place from ingress to + * ingress without going through the CPU's backlog queue. If the + * **BPF_F_EGRESS** flag is provided then redirection happens in + * the egress direction of the peer device. * * *skb*\ **->mark** and *skb*\ **->tstamp** are not cleared during * the netns switch. * - * The *flags* argument is reserved and must be 0. The helper is - * currently only supported for tc BPF program types at the - * ingress hook and for veth and netkit target device types. The - * peer device must reside in a different network namespace. + * If the *flags* argument is 0, the helper is currently only + * supported for tc BPF program types at the ingress hook and for + * veth and netkit target device types. The peer device must reside + * in a different network namespace. * Return * The helper returns **TC_ACT_REDIRECT** on success or * **TC_ACT_SHOT** on error. @@ -6336,9 +6338,10 @@ enum { /* Flags for bpf_redirect and bpf_redirect_map helpers */ enum { BPF_F_INGRESS = (1ULL << 0), /* used for skb path */ + BPF_F_EGRESS = (1ULL << 1), /* used for skb path */ BPF_F_BROADCAST = (1ULL << 3), /* used for XDP path */ BPF_F_EXCLUDE_INGRESS = (1ULL << 4), /* used for XDP path */ -#define BPF_F_REDIRECT_FLAGS (BPF_F_INGRESS | BPF_F_BROADCAST | BPF_F_EXCLUDE_INGRESS) +#define BPF_F_REDIRECT_FLAGS (BPF_F_INGRESS | BPF_F_EGRESS | BPF_F_BROADCAST | BPF_F_EXCLUDE_INGRESS) }; #define __bpf_md_ptr(type, name) \ |