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