net/ipv6/ila/ila_main.c

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