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 .ctl_name = NET_CORE_AEVENT_ETIME, 17 .procname = "xfrm_aevent_etime", 18 .maxlen = sizeof(u32), 19 .mode = 0644, 20 .proc_handler = proc_dointvec 21 }, 22 { 23 .ctl_name = NET_CORE_AEVENT_RSEQTH, 24 .procname = "xfrm_aevent_rseqth", 25 .maxlen = sizeof(u32), 26 .mode = 0644, 27 .proc_handler = proc_dointvec 28 }, 29 { 30 .ctl_name = CTL_UNNUMBERED, 31 .procname = "xfrm_larval_drop", 32 .maxlen = sizeof(int), 33 .mode = 0644, 34 .proc_handler = proc_dointvec 35 }, 36 { 37 .ctl_name = CTL_UNNUMBERED, 38 .procname = "xfrm_acq_expires", 39 .maxlen = sizeof(int), 40 .mode = 0644, 41 .proc_handler = proc_dointvec 42 }, 43 {} 44 }; 45 46 int __net_init xfrm_sysctl_init(struct net *net) 47 { 48 struct ctl_table *table; 49 50 __xfrm_sysctl_init(net); 51 52 table = kmemdup(xfrm_table, sizeof(xfrm_table), GFP_KERNEL); 53 if (!table) 54 goto out_kmemdup; 55 table[0].data = &net->xfrm.sysctl_aevent_etime; 56 table[1].data = &net->xfrm.sysctl_aevent_rseqth; 57 table[2].data = &net->xfrm.sysctl_larval_drop; 58 table[3].data = &net->xfrm.sysctl_acq_expires; 59 60 net->xfrm.sysctl_hdr = register_net_sysctl_table(net, net_core_path, table); 61 if (!net->xfrm.sysctl_hdr) 62 goto out_register; 63 return 0; 64 65 out_register: 66 kfree(table); 67 out_kmemdup: 68 return -ENOMEM; 69 } 70 71 void xfrm_sysctl_fini(struct net *net) 72 { 73 struct ctl_table *table; 74 75 table = net->xfrm.sysctl_hdr->ctl_table_arg; 76 unregister_net_sysctl_table(net->xfrm.sysctl_hdr); 77 kfree(table); 78 } 79 #else 80 int __net_init xfrm_sysctl_init(struct net *net) 81 { 82 __xfrm_sysctl_init(net); 83 return 0; 84 } 85 #endif 86