1 // SPDX-License-Identifier: GPL-2.0 2 #include <net/genetlink.h> 3 #include <net/netns/generic.h> 4 #include <uapi/linux/genetlink.h> 5 #include "ila.h" 6 7 static const struct nla_policy ila_nl_policy[ILA_ATTR_MAX + 1] = { 8 [ILA_ATTR_LOCATOR] = { .type = NLA_U64, }, 9 [ILA_ATTR_LOCATOR_MATCH] = { .type = NLA_U64, }, 10 [ILA_ATTR_IFINDEX] = { .type = NLA_U32, }, 11 [ILA_ATTR_CSUM_MODE] = { .type = NLA_U8, }, 12 [ILA_ATTR_IDENT_TYPE] = { .type = NLA_U8, }, 13 }; 14 15 static const struct genl_ops ila_nl_ops[] = { 16 { 17 .cmd = ILA_CMD_ADD, 18 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 19 .doit = ila_xlat_nl_cmd_add_mapping, 20 .flags = GENL_ADMIN_PERM, 21 }, 22 { 23 .cmd = ILA_CMD_DEL, 24 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 25 .doit = ila_xlat_nl_cmd_del_mapping, 26 .flags = GENL_ADMIN_PERM, 27 }, 28 { 29 .cmd = ILA_CMD_FLUSH, 30 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 31 .doit = ila_xlat_nl_cmd_flush, 32 .flags = GENL_ADMIN_PERM, 33 }, 34 { 35 .cmd = ILA_CMD_GET, 36 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 37 .doit = ila_xlat_nl_cmd_get_mapping, 38 .start = ila_xlat_nl_dump_start, 39 .dumpit = ila_xlat_nl_dump, 40 .done = ila_xlat_nl_dump_done, 41 }, 42 }; 43 44 unsigned int ila_net_id; 45 46 struct genl_family ila_nl_family __ro_after_init = { 47 .hdrsize = 0, 48 .name = ILA_GENL_NAME, 49 .version = ILA_GENL_VERSION, 50 .maxattr = ILA_ATTR_MAX, 51 .policy = ila_nl_policy, 52 .netnsok = true, 53 .parallel_ops = true, 54 .module = THIS_MODULE, 55 .ops = ila_nl_ops, 56 .n_ops = ARRAY_SIZE(ila_nl_ops), 57 .resv_start_op = ILA_CMD_FLUSH + 1, 58 }; 59 60 static __net_init int ila_init_net(struct net *net) 61 { 62 int err; 63 64 err = ila_xlat_init_net(net); 65 if (err) 66 goto ila_xlat_init_fail; 67 68 return 0; 69 70 ila_xlat_init_fail: 71 return err; 72 } 73 74 static __net_exit void ila_pre_exit_net(struct net *net) 75 { 76 ila_xlat_pre_exit_net(net); 77 } 78 79 static __net_exit void ila_exit_net(struct net *net) 80 { 81 ila_xlat_exit_net(net); 82 } 83 84 static struct pernet_operations ila_net_ops = { 85 .init = ila_init_net, 86 .pre_exit = ila_pre_exit_net, 87 .exit = ila_exit_net, 88 .id = &ila_net_id, 89 .size = sizeof(struct ila_net), 90 }; 91 92 static int __init ila_init(void) 93 { 94 int ret; 95 96 ret = register_pernet_device(&ila_net_ops); 97 if (ret) 98 goto register_device_fail; 99 100 ret = genl_register_family(&ila_nl_family); 101 if (ret) 102 goto register_family_fail; 103 104 ret = ila_lwt_init(); 105 if (ret) 106 goto fail_lwt; 107 108 return 0; 109 110 fail_lwt: 111 genl_unregister_family(&ila_nl_family); 112 register_family_fail: 113 unregister_pernet_device(&ila_net_ops); 114 register_device_fail: 115 return ret; 116 } 117 118 static void __exit ila_fini(void) 119 { 120 ila_lwt_fini(); 121 genl_unregister_family(&ila_nl_family); 122 unregister_pernet_device(&ila_net_ops); 123 } 124 125 module_init(ila_init); 126 module_exit(ila_fini); 127 MODULE_AUTHOR("Tom Herbert <tom@herbertland.com>"); 128 MODULE_LICENSE("GPL"); 129 MODULE_DESCRIPTION("IPv6: Identifier Locator Addressing (ILA)"); 130