netns xfrm: per-netns MIBs

[linux-2.6-omap-h63xx.git] / net / xfrm / xfrm_policy.c

diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index fcf8c928285af2ac2e56b80a81252750c2cf5858..e239a25e571c8f712464e9018648940e82ba8da6 100644 (file)
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -36,11 +36,6 @@
 
 int sysctl_xfrm_larval_drop __read_mostly = 1;
 
-#ifdef CONFIG_XFRM_STATISTICS
-DEFINE_SNMP_STAT(struct linux_xfrm_mib, xfrm_statistics) __read_mostly;
-EXPORT_SYMBOL(xfrm_statistics);
-#endif
-
 DEFINE_MUTEX(xfrm_cfg_mutex);
 EXPORT_SYMBOL(xfrm_cfg_mutex);
 
@@ -1570,7 +1565,7 @@ restart:
                policy = xfrm_sk_policy_lookup(sk, XFRM_POLICY_OUT, fl);
                err = PTR_ERR(policy);
                if (IS_ERR(policy)) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTPOLERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTPOLERROR);
                        goto dropdst;
                }
        }
@@ -1585,7 +1580,7 @@ restart:
                                           dir, xfrm_policy_lookup);
                err = PTR_ERR(policy);
                if (IS_ERR(policy)) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTPOLERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTPOLERROR);
                        goto dropdst;
                }
        }
@@ -1608,7 +1603,7 @@ restart:
        default:
        case XFRM_POLICY_BLOCK:
                /* Prohibit the flow */
-               XFRM_INC_STATS(LINUX_MIB_XFRMOUTPOLBLOCK);
+               XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTPOLBLOCK);
                err = -EPERM;
                goto error;
 
@@ -1628,7 +1623,7 @@ restart:
                 */
                dst = xfrm_find_bundle(fl, policy, family);
                if (IS_ERR(dst)) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTBUNDLECHECKERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTBUNDLECHECKERROR);
                        err = PTR_ERR(dst);
                        goto error;
                }
@@ -1644,12 +1639,12 @@ restart:
                                                            XFRM_POLICY_OUT);
                        if (pols[1]) {
                                if (IS_ERR(pols[1])) {
-                                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTPOLERROR);
+                                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTPOLERROR);
                                        err = PTR_ERR(pols[1]);
                                        goto error;
                                }
                                if (pols[1]->action == XFRM_POLICY_BLOCK) {
-                                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTPOLBLOCK);
+                                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTPOLBLOCK);
                                        err = -EPERM;
                                        goto error;
                                }
@@ -1680,7 +1675,7 @@ restart:
                                /* EREMOTE tells the caller to generate
                                 * a one-shot blackhole route.
                                 */
-                               XFRM_INC_STATS(LINUX_MIB_XFRMOUTNOSTATES);
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTNOSTATES);
                                xfrm_pol_put(policy);
                                return -EREMOTE;
                        }
@@ -1696,7 +1691,7 @@ restart:
                                nx = xfrm_tmpl_resolve(pols, npols, fl, xfrm, family);
 
                                if (nx == -EAGAIN && signal_pending(current)) {
-                                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTNOSTATES);
+                                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTNOSTATES);
                                        err = -ERESTART;
                                        goto error;
                                }
@@ -1708,7 +1703,7 @@ restart:
                                err = nx;
                        }
                        if (err < 0) {
-                               XFRM_INC_STATS(LINUX_MIB_XFRMOUTNOSTATES);
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTNOSTATES);
                                goto error;
                        }
                }
@@ -1721,7 +1716,7 @@ restart:
                dst = xfrm_bundle_create(policy, xfrm, nx, fl, dst_orig);
                err = PTR_ERR(dst);
                if (IS_ERR(dst)) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTBUNDLEGENERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTBUNDLEGENERROR);
                        goto error;
                }
 
@@ -1742,9 +1737,9 @@ restart:
                        dst_free(dst);
 
                        if (pol_dead)
-                               XFRM_INC_STATS(LINUX_MIB_XFRMOUTPOLDEAD);
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTPOLDEAD);
                        else
-                               XFRM_INC_STATS(LINUX_MIB_XFRMOUTBUNDLECHECKERROR);
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTBUNDLECHECKERROR);
                        err = -EHOSTUNREACH;
                        goto error;
                }
@@ -1756,7 +1751,7 @@ restart:
                if (unlikely(err)) {
                        write_unlock_bh(&policy->lock);
                        dst_free(dst);
-                       XFRM_INC_STATS(LINUX_MIB_XFRMOUTBUNDLECHECKERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTBUNDLECHECKERROR);
                        goto error;
                }
 
@@ -1912,7 +1907,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
        fl_dir = policy_to_flow_dir(dir);
 
        if (__xfrm_decode_session(skb, &fl, family, reverse) < 0) {
-               XFRM_INC_STATS(LINUX_MIB_XFRMINHDRERROR);
+               XFRM_INC_STATS(net, LINUX_MIB_XFRMINHDRERROR);
                return 0;
        }
 
@@ -1925,7 +1920,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
                for (i=skb->sp->len-1; i>=0; i--) {
                        struct xfrm_state *x = skb->sp->xvec[i];
                        if (!xfrm_selector_match(&x->sel, &fl, family)) {
-                               XFRM_INC_STATS(LINUX_MIB_XFRMINSTATEMISMATCH);
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEMISMATCH);
                                return 0;
                        }
                }
@@ -1935,7 +1930,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
        if (sk && sk->sk_policy[dir]) {
                pol = xfrm_sk_policy_lookup(sk, dir, &fl);
                if (IS_ERR(pol)) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMINPOLERROR);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMINPOLERROR);
                        return 0;
                }
        }
@@ -1945,14 +1940,14 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
                                        xfrm_policy_lookup);
 
        if (IS_ERR(pol)) {
-               XFRM_INC_STATS(LINUX_MIB_XFRMINPOLERROR);
+               XFRM_INC_STATS(net, LINUX_MIB_XFRMINPOLERROR);
                return 0;
        }
 
        if (!pol) {
                if (skb->sp && secpath_has_nontransport(skb->sp, 0, &xerr_idx)) {
                        xfrm_secpath_reject(xerr_idx, skb, &fl);
-                       XFRM_INC_STATS(LINUX_MIB_XFRMINNOPOLS);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMINNOPOLS);
                        return 0;
                }
                return 1;
@@ -1969,7 +1964,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
                                                    XFRM_POLICY_IN);
                if (pols[1]) {
                        if (IS_ERR(pols[1])) {
-                               XFRM_INC_STATS(LINUX_MIB_XFRMINPOLERROR);
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMINPOLERROR);
                                return 0;
                        }
                        pols[1]->curlft.use_time = get_seconds();
@@ -1993,11 +1988,11 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
                for (pi = 0; pi < npols; pi++) {
                        if (pols[pi] != pol &&
                            pols[pi]->action != XFRM_POLICY_ALLOW) {
-                               XFRM_INC_STATS(LINUX_MIB_XFRMINPOLBLOCK);
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMINPOLBLOCK);
                                goto reject;
                        }
                        if (ti + pols[pi]->xfrm_nr >= XFRM_MAX_DEPTH) {
-                               XFRM_INC_STATS(LINUX_MIB_XFRMINBUFFERERROR);
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMINBUFFERERROR);
                                goto reject_error;
                        }
                        for (i = 0; i < pols[pi]->xfrm_nr; i++)
@@ -2021,20 +2016,20 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
                                if (k < -1)
                                        /* "-2 - errored_index" returned */
                                        xerr_idx = -(2+k);
-                               XFRM_INC_STATS(LINUX_MIB_XFRMINTMPLMISMATCH);
+                               XFRM_INC_STATS(net, LINUX_MIB_XFRMINTMPLMISMATCH);
                                goto reject;
                        }
                }
 
                if (secpath_has_nontransport(sp, k, &xerr_idx)) {
-                       XFRM_INC_STATS(LINUX_MIB_XFRMINTMPLMISMATCH);
+                       XFRM_INC_STATS(net, LINUX_MIB_XFRMINTMPLMISMATCH);
                        goto reject;
                }
 
                xfrm_pols_put(pols, npols);
                return 1;
        }
-       XFRM_INC_STATS(LINUX_MIB_XFRMINPOLBLOCK);
+       XFRM_INC_STATS(net, LINUX_MIB_XFRMINPOLBLOCK);
 
 reject:
        xfrm_secpath_reject(xerr_idx, skb, &fl);
@@ -2051,7 +2046,7 @@ int __xfrm_route_forward(struct sk_buff *skb, unsigned short family)
 
        if (xfrm_decode_session(skb, &fl, family) < 0) {
                /* XXX: we should have something like FWDHDRERROR here. */
-               XFRM_INC_STATS(LINUX_MIB_XFRMINHDRERROR);
+               XFRM_INC_STATS(net, LINUX_MIB_XFRMINHDRERROR);
                return 0;
        }
 
@@ -2380,13 +2375,27 @@ static struct notifier_block xfrm_dev_notifier = {
 };
 
 #ifdef CONFIG_XFRM_STATISTICS
-static int __init xfrm_statistics_init(void)
+static int __net_init xfrm_statistics_init(struct net *net)
 {
-       if (snmp_mib_init((void **)xfrm_statistics,
+       if (snmp_mib_init((void **)net->mib.xfrm_statistics,
                          sizeof(struct linux_xfrm_mib)) < 0)
                return -ENOMEM;
        return 0;
 }
+
+static void xfrm_statistics_fini(struct net *net)
+{
+       snmp_mib_free((void **)net->mib.xfrm_statistics);
+}
+#else
+static int __net_init xfrm_statistics_init(struct net *net)
+{
+       return 0;
+}
+
+static void xfrm_statistics_fini(struct net *net)
+{
+}
 #endif
 
 static int __net_init xfrm_policy_init(struct net *net)
@@ -2480,6 +2489,9 @@ static int __net_init xfrm_net_init(struct net *net)
 {
        int rv;
 
+       rv = xfrm_statistics_init(net);
+       if (rv < 0)
+               goto out_statistics;
        rv = xfrm_state_init(net);
        if (rv < 0)
                goto out_state;
@@ -2491,6 +2503,8 @@ static int __net_init xfrm_net_init(struct net *net)
 out_policy:
        xfrm_state_fini(net);
 out_state:
+       xfrm_statistics_fini(net);
+out_statistics:
        return rv;
 }
 
@@ -2498,6 +2512,7 @@ static void __net_exit xfrm_net_exit(struct net *net)
 {
        xfrm_policy_fini(net);
        xfrm_state_fini(net);
+       xfrm_statistics_fini(net);
 }
 
 static struct pernet_operations __net_initdata xfrm_net_ops = {
@@ -2508,9 +2523,6 @@ static struct pernet_operations __net_initdata xfrm_net_ops = {
 void __init xfrm_init(void)
 {
        register_pernet_subsys(&xfrm_net_ops);
-#ifdef CONFIG_XFRM_STATISTICS
-       xfrm_statistics_init();
-#endif
        xfrm_input_init();
 #ifdef CONFIG_XFRM_STATISTICS
        xfrm_proc_init();