diff options
| author | Dave Airlie <[email protected]> | 2020-03-11 07:27:21 +1000 |
|---|---|---|
| committer | Dave Airlie <[email protected]> | 2020-03-11 07:27:21 +1000 |
| commit | d3bd37f587b4438d47751d0f1d5aaae3d39bd416 (patch) | |
| tree | 9414a8fd1ca74c47fe1a3966e0a22469ac0b73a3 /include/uapi/linux/bpf.h | |
| parent | 60347451ddb0646c1a9cc5b9581e5bcf648ad1aa (diff) | |
| parent | 2c523b344dfa65a3738e7039832044aa133c75fb (diff) | |
Merge v5.6-rc5 into drm-next
Requested my mripard for some misc patches that need this as a base.
Signed-off-by: Dave Airlie <[email protected]>
Diffstat (limited to 'include/uapi/linux/bpf.h')
| -rw-r--r-- | include/uapi/linux/bpf.h | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index f1d74a2bd234..22f235260a3a 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -1045,9 +1045,9 @@ union bpf_attr { * supports redirection to the egress interface, and accepts no * flag at all. * - * The same effect can be attained with the more generic - * **bpf_redirect_map**\ (), which requires specific maps to be - * used but offers better performance. + * The same effect can also be attained with the more generic + * **bpf_redirect_map**\ (), which uses a BPF map to store the + * redirect target instead of providing it directly to the helper. * Return * For XDP, the helper returns **XDP_REDIRECT** on success or * **XDP_ABORTED** on error. For other program types, the values @@ -1611,13 +1611,11 @@ union bpf_attr { * the caller. Any higher bits in the *flags* argument must be * unset. * - * When used to redirect packets to net devices, this helper - * provides a high performance increase over **bpf_redirect**\ (). - * This is due to various implementation details of the underlying - * mechanisms, one of which is the fact that **bpf_redirect_map**\ - * () tries to send packet as a "bulk" to the device. + * See also bpf_redirect(), which only supports redirecting to an + * ifindex, but doesn't require a map to do so. * Return - * **XDP_REDIRECT** on success, or **XDP_ABORTED** on error. + * **XDP_REDIRECT** on success, or the value of the two lower bits + * of the **flags* argument on error. * * int bpf_sk_redirect_map(struct sk_buff *skb, struct bpf_map *map, u32 key, u64 flags) * Description |