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d2042d35f4
As IPv6 is built-in only, there is no need to maintain the sender registration infrastructure used to allow built-in subsystems to send ICMPv6 messages when IPv6 was compiled as a module. Drop the registration mechanism and the __icmpv6_send() sender implementation. While icmpv6_send() users could be converted to icmp6_send() that doesn't seems necessary as none of them are using the force_saddr parameter. Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de> Tested-by: Ricardo B. Marlière <rbm@suse.com> Link: https://patch.msgid.link/20260325120928.15848-5-fmancera@suse.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/export.h>
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#include <linux/icmpv6.h>
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#include <linux/mutex.h>
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#include <linux/netdevice.h>
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#include <linux/spinlock.h>
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#include <net/ipv6.h>
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#if IS_ENABLED(CONFIG_IPV6) && IS_ENABLED(CONFIG_NF_NAT)
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#include <net/netfilter/nf_conntrack.h>
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void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info)
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{
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struct inet6_skb_parm parm = { 0 };
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struct sk_buff *cloned_skb = NULL;
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enum ip_conntrack_info ctinfo;
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enum ip_conntrack_dir dir;
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struct in6_addr orig_ip;
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struct nf_conn *ct;
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ct = nf_ct_get(skb_in, &ctinfo);
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if (!ct || !(READ_ONCE(ct->status) & IPS_NAT_MASK)) {
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icmp6_send(skb_in, type, code, info, NULL, &parm);
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return;
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}
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if (skb_shared(skb_in))
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skb_in = cloned_skb = skb_clone(skb_in, GFP_ATOMIC);
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if (unlikely(!skb_in || skb_network_header(skb_in) < skb_in->head ||
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(skb_network_header(skb_in) + sizeof(struct ipv6hdr)) >
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skb_tail_pointer(skb_in) || skb_ensure_writable(skb_in,
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skb_network_offset(skb_in) + sizeof(struct ipv6hdr))))
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goto out;
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orig_ip = ipv6_hdr(skb_in)->saddr;
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dir = CTINFO2DIR(ctinfo);
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ipv6_hdr(skb_in)->saddr = ct->tuplehash[dir].tuple.src.u3.in6;
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icmp6_send(skb_in, type, code, info, NULL, &parm);
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ipv6_hdr(skb_in)->saddr = orig_ip;
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out:
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consume_skb(cloned_skb);
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}
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EXPORT_SYMBOL(icmpv6_ndo_send);
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#endif
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