From: "Arnd Bergmann" <arnd@arndb.de>
To: "Nicolai Buchwitz" <nb@tipi-net.de>,
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Subject: Re: [PATCH 01/13 net-next] net: ipv4: introduce CONFIG_IPV4 to decouple the IPv4 stack
Date: Thu, 10 Sep 2026 17:36:54 +0200 [thread overview]
Message-ID: <cda5d4e9-49a5-4d6f-93d4-fb50d74ed5ce@app.fastmail.com> (raw)
In-Reply-To: <aeb37452e976f5d44540ac3a0999d07b@tipi-net.de>
On Thu, Sep 10, 2026, at 17:11, Nicolai Buchwitz wrote:
>> diff --git a/net/packet/Kconfig b/net/packet/Kconfig
>> index 2997382d597c..00fda9e08cb0 100644
>> --- a/net/packet/Kconfig
>> +++ b/net/packet/Kconfig
>> @@ -5,6 +5,7 @@
>>
>> config PACKET
>> tristate "Packet socket"
>> + depends on IPV4
>
> depends on IPV4 || !INET
>
> Otherwise this would break existing configs with INET=n. The same
> applies to other affected options that currently permit INET=n.
Since that's a lot of symbols that all need the same dependency,
maybe we could have an intermediate symbol for it:
config IPV4_IF_INET # or any better name you can think of
def_bool IPV4 || !INET
Similarly, everything that currently has 'depends on INET && IPV4'
could be simplified to just 'depends on IPV4', and the leftover
'depends on INET && IPV6' from the days of modular IPV6 can now
become 'depends on IPV4'. We only needed to list both in the past
to deal with the IPV6=m case.
Arnd
next prev parent reply other threads:[~2026-09-10 15:37 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-10 14:48 [PATCH 00/13 net-next] Allow compiling an IPv6-only kernel network stack Fernando Fernandez Mancera
2026-09-10 14:48 ` [PATCH 01/13 net-next] net: ipv4: introduce CONFIG_IPV4 to decouple the IPv4 stack Fernando Fernandez Mancera
2026-09-10 15:11 ` Nicolai Buchwitz
2026-09-10 15:32 ` Fernando Fernandez Mancera
2026-09-10 15:36 ` Arnd Bergmann [this message]
2026-09-10 16:22 ` Fernando Fernandez Mancera
2026-09-10 16:30 ` Fernando Fernandez Mancera
2026-09-10 16:56 ` Sven Eckelmann
2026-09-11 18:39 ` Fernando Fernandez Mancera
2026-09-10 18:55 ` Chuck Lever
2026-09-11 15:15 ` sashiko-bot
2026-09-11 17:46 ` Casey Schaufler
2026-09-11 18:31 ` Fernando Fernandez Mancera
2026-09-11 18:59 ` Casey Schaufler
2026-09-10 14:48 ` [PATCH 02/13 net-next] net: core: add IPv4 fallback stubs and guards for CONFIG_IPV4=n Fernando Fernandez Mancera
2026-09-10 14:48 ` [PATCH 03/13 net-next] net: inet: relocate ip_generic_getfrag and guard IPv4 socket logic Fernando Fernandez Mancera
2026-09-10 21:19 ` Stanislav Fomichev
2026-09-11 18:41 ` Fernando Fernandez Mancera
2026-09-10 14:48 ` [PATCH 04/13 net-next] net: tcp: move protocol agnostic TCP functions out of tcp_ipv4.c Fernando Fernandez Mancera
2026-09-10 14:48 ` [PATCH 05/13 net-next] net: raw: split IPv4 specific logic into raw_ipv4.c Fernando Fernandez Mancera
2026-09-10 14:48 ` [PATCH 06/13 net-next] net: udp: split IPv4 specific logic into udp_ipv4.c Fernando Fernandez Mancera
2026-09-11 15:15 ` sashiko-bot
2026-09-10 14:48 ` [PATCH 07/13 net-next] net: icmp: split IPv4 specific logic into icmp_ipv4.c Fernando Fernandez Mancera
2026-09-10 14:48 ` [PATCH 08/13 net-next] net: ping: split IPv4 specific logic into ping_ipv4.c Fernando Fernandez Mancera
2026-09-10 14:48 ` [PATCH 09/13 net-next] net: fib: split common nexthop logic to fib_core.c Fernando Fernandez Mancera
2026-09-11 15:15 ` sashiko-bot
2026-09-10 14:48 ` [PATCH 10/13 net-next] net: tunnel: guard IPv4 tunnel functions with CONFIG_IPV4 Fernando Fernandez Mancera
2026-09-10 14:48 ` [PATCH 11/13 net-next] netfilter: ipv4: guard ip_route_me_harder() " Fernando Fernandez Mancera
2026-09-10 14:48 ` [PATCH 12/13 net-next] net: ipv4: disable IPv4-only sysctls when CONFIG_IPV4=n Fernando Fernandez Mancera
2026-09-10 14:48 ` [PATCH 13/13 net-next] net: ipv4: make CONFIG_IPV4 boolean Fernando Fernandez Mancera
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