1 #include <linux/sysctl.h> 2 #include <linux/slab.h> 3 #include <net/net_namespace.h> 4 #include <net/xfrm.h> 5 6 static void __net_init __xfrm_sysctl_init(struct net *net) 7 { 8 net->xfrm.sysctl_aevent_etime = XFRM_AE_ETIME; 9 net->xfrm.sysctl_aevent_rseqth = XFRM_AE_SEQT_SIZE; 10 net->xfrm.sysctl_larval_drop = 1; 11 net->xfrm.sysctl_acq_expires = 30; 12 } 13 14 #ifdef CONFIG_SYSCTL 15 static struct ctl_table xfrm_table[] = { 16 { 17 .procname = "xfrm_aevent_etime", 18 .maxlen = sizeof(u32), 19 .mode = 0644, 20 .proc_handler = proc_dointvec 21 }, 22 { 23 .procname = "xfrm_aevent_rseqth", 24 .maxlen = sizeof(u32), 25 .mode = 0644, 26 .proc_handler = proc_dointvec 27 }, 28 { 29 .procname = "xfrm_larval_drop", 30 .maxlen = sizeof(int), 31 .mode = 0644, 32 .proc_handler = proc_dointvec 33 }, 34 { 35 .procname = "xfrm_acq_expires", 36 .maxlen = sizeof(int), 37 .mode = 0644, 38 .proc_handler = proc_dointvec 39 }, 40 {} 41 }; 42 43 int __net_init xfrm_sysctl_init(struct net *net) 44 { 45 struct ctl_table *table; 46 47 __xfrm_sysctl_init(net); 48 49 table = kmemdup(xfrm_table, sizeof(xfrm_table), GFP_KERNEL); 50 if (!table) 51 goto out_kmemdup; 52 table[0].data = &net->xfrm.sysctl_aevent_etime; 53 table[1].data = &net->xfrm.sysctl_aevent_rseqth; 54 table[2].data = &net->xfrm.sysctl_larval_drop; 55 table[3].data = &net->xfrm.sysctl_acq_expires; 56 57 net->xfrm.sysctl_hdr = register_net_sysctl_table(net, net_core_path, table); 58 if (!net->xfrm.sysctl_hdr) 59 goto out_register; 60 return 0; 61 62 out_register: 63 kfree(table); 64 out_kmemdup: 65 return -ENOMEM; 66 } 67 68 void __net_exit xfrm_sysctl_fini(struct net *net) 69 { 70 struct ctl_table *table; 71 72 table = net->xfrm.sysctl_hdr->ctl_table_arg; 73 unregister_net_sysctl_table(net->xfrm.sysctl_hdr); 74 kfree(table); 75 } 76 #else 77 int __net_init xfrm_sysctl_init(struct net *net) 78 { 79 __xfrm_sysctl_init(net); 80 return 0; 81 } 82 #endif 83