int nf_conntrack_proto_init(void) { int ret = 0; ret = nf_register_sockopt(&so_getorigdst); if (ret < 0) return ret; #if IS_ENABLED(CONFIG_IPV6) ret = nf_register_sockopt(&so_getorigdst6); if (ret < 0) goto cleanup_sockopt; #endif ret = nf_ct_l4proto_register(builtin_l4proto, ARRAY_SIZE(builtin_l4proto)); if (ret < 0) goto cleanup_sockopt2; return ret; cleanup_sockopt2: nf_unregister_sockopt(&so_getorigdst); #if IS_ENABLED(CONFIG_IPV6) cleanup_sockopt: nf_unregister_sockopt(&so_getorigdst6); #endif return ret; }
static int __init nf_conntrack_proto_dccp_init(void) { int ret; ret = register_pernet_subsys(&dccp_net_ops); if (ret < 0) goto out_pernet; ret = nf_ct_l4proto_register(&dccp_proto4); if (ret < 0) goto out_dccp4; ret = nf_ct_l4proto_register(&dccp_proto6); if (ret < 0) goto out_dccp6; return 0; out_dccp6: nf_ct_l4proto_unregister(&dccp_proto4); out_dccp4: unregister_pernet_subsys(&dccp_net_ops); out_pernet: return ret; }
static int __init nf_conntrack_l3proto_ipv4_init(void) { int ret = 0; need_conntrack(); nf_defrag_ipv4_enable(); ret = nf_register_sockopt(&so_getorigdst); if (ret < 0) { printk(KERN_ERR "Unable to register netfilter socket option\n"); return ret; } ret = register_pernet_subsys(&ipv4_net_ops); if (ret < 0) { pr_err("nf_conntrack_ipv4: can't register pernet ops\n"); goto cleanup_sockopt; } ret = nf_register_hooks(ipv4_conntrack_ops, ARRAY_SIZE(ipv4_conntrack_ops)); if (ret < 0) { pr_err("nf_conntrack_ipv4: can't register hooks.\n"); goto cleanup_pernet; } ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_tcp4); if (ret < 0) { pr_err("nf_conntrack_ipv4: can't register tcp4 proto.\n"); goto cleanup_hooks; } ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_udp4); if (ret < 0) { pr_err("nf_conntrack_ipv4: can't register udp4 proto.\n"); goto cleanup_tcp4; } ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_icmp); if (ret < 0) { pr_err("nf_conntrack_ipv4: can't register icmpv4 proto.\n"); goto cleanup_udp4; } ret = nf_ct_l3proto_register(&nf_conntrack_l3proto_ipv4); if (ret < 0) { pr_err("nf_conntrack_ipv4: can't register ipv4 proto.\n"); goto cleanup_icmpv4; } #if defined(CONFIG_PROC_FS) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT) ret = nf_conntrack_ipv4_compat_init(); if (ret < 0) goto cleanup_proto; #endif return ret; #if defined(CONFIG_PROC_FS) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT) cleanup_proto: nf_ct_l3proto_unregister(&nf_conntrack_l3proto_ipv4); #endif cleanup_icmpv4: nf_ct_l4proto_unregister(&nf_conntrack_l4proto_icmp); cleanup_udp4: nf_ct_l4proto_unregister(&nf_conntrack_l4proto_udp4); cleanup_tcp4: nf_ct_l4proto_unregister(&nf_conntrack_l4proto_tcp4); cleanup_hooks: nf_unregister_hooks(ipv4_conntrack_ops, ARRAY_SIZE(ipv4_conntrack_ops)); cleanup_pernet: unregister_pernet_subsys(&ipv4_net_ops); cleanup_sockopt: nf_unregister_sockopt(&so_getorigdst); return ret; }