netdev - Re: [PATCH net-next] net-gre-gro: Add GRE support to the GRO stack

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Date:	Mon, 06 Jan 2014 15:43:30 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	hkchu@...gle.com
Cc:	edumazet@...gle.com, herbert@...dor.apana.org.au,
	ogerlitz@...lanox.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net-gre-gro: Add GRE support to the GRO stack

From: "H.K. Jerry Chu" <hkchu@...gle.com>
Date: Sat,  4 Jan 2014 20:37:59 -0800

> This patch built on top of Commit 299603e8370a93dd5d8e8d800f0dff1ce2c53d36
> ("net-gro: Prepare GRO stack for the upcoming tunneling support") to add
> the support of the standard GRE (RFC1701/RFC2784/RFC2890) to the GRO
> stack. It also serves as an example for supporting other encapsulation
> protocols in the GRO stack in the future.
...

Applied, but you guys do realize:

> diff --git a/net/ipv4/Makefile b/net/ipv4/Makefile
> index 4b81e91..f8c49ce 100644
> --- a/net/ipv4/Makefile
> +++ b/net/ipv4/Makefile
> @@ -11,7 +11,7 @@ obj-y     := route.o inetpeer.o protocol.o \
>  	     tcp_offload.o datagram.o raw.o udp.o udplite.o \
>  	     udp_offload.o arp.o icmp.o devinet.o af_inet.o igmp.o \
>  	     fib_frontend.o fib_semantics.o fib_trie.o \
> -	     inet_fragment.o ping.o ip_tunnel_core.o
> +	     inet_fragment.o ping.o ip_tunnel_core.o gre_offload.o
>  
>  obj-$(CONFIG_NET_IP_TUNNEL) += ip_tunnel.o
>  obj-$(CONFIG_SYSCTL) += sysctl_net_ipv4.o
> @@ -19,7 +19,7 @@ obj-$(CONFIG_PROC_FS) += proc.o
>  obj-$(CONFIG_IP_MULTIPLE_TABLES) += fib_rules.o
>  obj-$(CONFIG_IP_MROUTE) += ipmr.o
>  obj-$(CONFIG_NET_IPIP) += ipip.o
> -gre-y := gre_demux.o gre_offload.o
> +gre-y := gre_demux.o
>  obj-$(CONFIG_NET_IPGRE_DEMUX) += gre.o
>  obj-$(CONFIG_NET_IPGRE) += ip_gre.o
>  obj-$(CONFIG_NET_IPVTI) += ip_vti.o

That the gre offload bits won't be registered unless GRE is enabled and
initialized/loaded, right?
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