bpf: allow wide aligned loads for bpf_sock_addr user_ip6 and msg_src_ip6

Add explicit check for u64 loads of user_ip6 and msg_src_ip6 and
update the comment.

Cc: Yonghong Song <yhs@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 6f68438aa4ed..81be929b89fc 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -3248,7 +3248,7 @@ struct bpf_sock_addr {
         __u32 user_ip4;         /* Allows 1,2,4-byte read and 4-byte write.
                                  * Stored in network byte order.
                                  */
-        __u32 user_ip6[4];      /* Allows 1,2,4-byte read and 4,8-byte write.
+        __u32 user_ip6[4];      /* Allows 1,2,4,8-byte read and 4,8-byte write.
                                  * Stored in network byte order.
                                  */
         __u32 user_port;        /* Allows 4-byte read and write.
@@ -3260,7 +3260,7 @@ struct bpf_sock_addr {
         __u32 msg_src_ip4;      /* Allows 1,2,4-byte read and 4-byte write.
                                  * Stored in network byte order.
                                  */
-        __u32 msg_src_ip6[4];   /* Allows 1,2,4-byte read and 4,8-byte write.
+        __u32 msg_src_ip6[4];   /* Allows 1,2,4,8-byte read and 4,8-byte write.
                                  * Stored in network byte order.
                                  */
         __bpf_md_ptr(struct bpf_sock *, sk);