From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C5A71234964 for ; Sun, 12 Jul 2026 01:41:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783820499; cv=none; b=k79s3CuZpEpR8W8pZirINcXcdR4FlRB2HMV/PdTh9QYU7F0kBi9WKoFwM15SFORtIcwOG27Ho5shoGgxDYY0wU8hl3b7U0S7ZWZdAnoY9ECe+4KPcw9zqtbv+NK0iuPDDSDvrDqrXFEij0UJh/lqY7GIJ+nCfMc8rIwxag5b7fE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783820499; c=relaxed/simple; bh=U31TgNbKPfnopsLN55ATW10o/TlKSv0lz9ygAOijAKI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=J4V2huEGBULftQdieOLN5XAqHyGr2exQRSnk4GA+gZKgOjnRYDAp+k5wnCU8y9+yAE8ywdUo5kEqycE869RXmptYfQOp6blSbXQOF6x/qkGTnTh+SqgU7FKCN4kqA+IwqS5FU5Bo254nx68W0qRCGpxw9bNaWJkjWeYqKwgtwLE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de; spf=pass smtp.mailfrom=suse.de; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.de Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 5EFB77703C; Sun, 12 Jul 2026 01:41:35 +0000 (UTC) Authentication-Results: smtp-out1.suse.de; none Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id B5FAD779B5; Sun, 12 Jul 2026 01:41:34 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id qOdBKc7wUmqRegAAD6G6ig (envelope-from ); Sun, 12 Jul 2026 01:41:34 +0000 From: Fernando Fernandez Mancera To: netdev@vger.kernel.org Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, dsahern@kernel.org, horms@kernel.org, idosch@nvidia.com, Fernando Fernandez Mancera , linux-kernel@vger.kernel.org Subject: [PATCH 10/13 RFC net-next] net: tunnel: guard IPv4 tunnel functions with CONFIG_IPV4 Date: Sun, 12 Jul 2026 03:39:08 +0200 Message-ID: <20260712013941.4570-11-fmancera@suse.de> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260712013941.4570-1-fmancera@suse.de> References: <20260712013941.4570-1-fmancera@suse.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Rspamd-Queue-Id: 5EFB77703C X-Spam-Flag: NO X-Spam-Score: -4.00 X-Spam-Level: X-Rspamd-Action: no action X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 50.00]; REPLY(-4.00)[] To enable compiling INET subsystem withou IPv4, IPv4 specific IP tunnel core functions must be bypassed when the protocol is disabled. Signed-off-by: Fernando Fernandez Mancera --- net/ipv4/ip_tunnel_core.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/net/ipv4/ip_tunnel_core.c b/net/ipv4/ip_tunnel_core.c index d3c677e9bff2..700a759d3c46 100644 --- a/net/ipv4/ip_tunnel_core.c +++ b/net/ipv4/ip_tunnel_core.c @@ -52,6 +52,7 @@ void iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb, __u8 tos, __u8 ttl, __be16 df, bool xnet, u16 ipcb_flags) { +#if IS_ENABLED(CONFIG_IPV4) int pkt_len = skb->len - skb_inner_network_offset(skb); struct net *net = dev_net(rt->dst.dev); struct net_device *dev = skb->dev; @@ -103,6 +104,12 @@ void iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb, } dev_xmit_recursion_dec(); +#else + if (skb->dev) + DEV_STATS_INC(skb->dev, tx_errors); + ip_rt_put(rt); + kfree_skb(skb); +#endif } EXPORT_SYMBOL_GPL(iptunnel_xmit); @@ -212,6 +219,7 @@ EXPORT_SYMBOL_GPL(iptunnel_handle_offloads); */ static int iptunnel_pmtud_build_icmp(struct sk_buff *skb, int mtu) { +#if IS_ENABLED(CONFIG_IPV4) const struct iphdr *iph; struct icmphdr *icmph; struct iphdr *niph; @@ -269,6 +277,9 @@ static int iptunnel_pmtud_build_icmp(struct sk_buff *skb, int mtu) skb_reset_mac_header(skb); return skb->len; +#else + return -EOPNOTSUPP; +#endif } /** -- 2.54.0