netdev - Re: [PATCH net-next 3/6] vxlan: ecmp support for mac fdb entries

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Date:   Mon, 18 May 2020 21:57:44 -0600
From:   David Ahern <dsahern@...il.com>
To:     Roopa Prabhu <roopa@...ulusnetworks.com>, davem@...emloft.net
Cc:     netdev@...r.kernel.org, nikolay@...ulusnetworks.com,
        jiri@...lanox.com, idosch@...lanox.com, petrm@...lanox.com
Subject: Re: [PATCH net-next 3/6] vxlan: ecmp support for mac fdb entries

On 5/18/20 8:14 PM, Roopa Prabhu wrote:
> diff --git a/include/net/nexthop.h b/include/net/nexthop.h
> index 04dafc6..d929c98 100644
> --- a/include/net/nexthop.h
> +++ b/include/net/nexthop.h
> @@ -331,6 +331,8 @@ static inline struct fib_nh_common *nexthop_path_fdb_result(struct nexthop *nh,
>  	struct nexthop *nhp;
>  
>  	nhp = nexthop_select_path(nh, hash);
> +	if (unlikely(!nhp))
> +		return NULL;
>  	nhi = rcu_dereference(nhp->nh_info);
>  	return &nhi->fib_nhc;
>  }

that should be folded into patch 2 which introduces nexthop_path_fdb_result


> diff --git a/include/uapi/linux/neighbour.h b/include/uapi/linux/neighbour.h
> index cd144e3..eefcda8 100644
> --- a/include/uapi/linux/neighbour.h
> +++ b/include/uapi/linux/neighbour.h
> @@ -29,6 +29,7 @@ enum {
>  	NDA_LINK_NETNSID,
>  	NDA_SRC_VNI,
>  	NDA_PROTOCOL,  /* Originator of entry */
> +	NDA_NH_ID,
>  	__NDA_MAX
>  };
>  
> 

That needs to be in Patch 2 for it to compile.

I am not qualified to review the vxlan code.