Re: [PATCHv2 net] bonding: fix ICMPv6 header handling when receiving IPv6 messages

[David Ahern <dsahern@gmail.com>]

On 11/8/22 12:00 AM, Hangbin Liu wrote:
> Currently, we get icmp6hdr via function icmp6_hdr(), which needs the skb
> transport header to be set first. But there is no rule to ask driver set
> transport header before netif_receive_skb() and bond_handle_frame(). So
> we will not able to get correct icmp6hdr on some drivers.
> 
> Fix this by checking the skb length manually and getting icmp6 header based
> on the IPv6 header offset.
> 
> Reported-by: Liang Li <liali@redhat.com>
> Fixes: 4e24be018eb9 ("bonding: add new parameter ns_targets")
> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
> ---
> v2: use skb_header_pointer() to get icmp6hdr as Jay suggested.
> ---
>  drivers/net/bonding/bond_main.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 

Reviewed-by: David Ahern <dsahern@kernel.org>