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-rw-r--r--net/xfrm/Makefile4
-rw-r--r--net/xfrm/xfrm_input.c25
-rw-r--r--net/xfrm/xfrm_output.c18
-rw-r--r--net/xfrm/xfrm_policy.c511
-rw-r--r--net/xfrm/xfrm_proc.c26
-rw-r--r--net/xfrm/xfrm_state.c407
-rw-r--r--net/xfrm/xfrm_sysctl.c85
-rw-r--r--net/xfrm/xfrm_user.c249
8 files changed, 805 insertions, 520 deletions
diff --git a/net/xfrm/Makefile b/net/xfrm/Makefile
index 0f439a72cca..c631047e1b2 100644
--- a/net/xfrm/Makefile
+++ b/net/xfrm/Makefile
@@ -3,8 +3,8 @@
#
obj-$(CONFIG_XFRM) := xfrm_policy.o xfrm_state.o xfrm_hash.o \
- xfrm_input.o xfrm_output.o xfrm_algo.o
+ xfrm_input.o xfrm_output.o xfrm_algo.o \
+ xfrm_sysctl.o
obj-$(CONFIG_XFRM_STATISTICS) += xfrm_proc.o
obj-$(CONFIG_XFRM_USER) += xfrm_user.o
obj-$(CONFIG_XFRM_IPCOMP) += xfrm_ipcomp.o
-
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 75279402ccf..b4a13178fb4 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -104,6 +104,7 @@ EXPORT_SYMBOL(xfrm_prepare_input);
int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
{
+ struct net *net = dev_net(skb->dev);
int err;
__be32 seq;
struct xfrm_state *x;
@@ -127,7 +128,7 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
sp = secpath_dup(skb->sp);
if (!sp) {
- XFRM_INC_STATS(LINUX_MIB_XFRMINERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINERROR);
goto drop;
}
if (skb->sp)
@@ -141,19 +142,19 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
seq = 0;
if (!spi && (err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) != 0) {
- XFRM_INC_STATS(LINUX_MIB_XFRMINHDRERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINHDRERROR);
goto drop;
}
do {
if (skb->sp->len == XFRM_MAX_DEPTH) {
- XFRM_INC_STATS(LINUX_MIB_XFRMINBUFFERERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINBUFFERERROR);
goto drop;
}
- x = xfrm_state_lookup(daddr, spi, nexthdr, family);
+ x = xfrm_state_lookup(net, daddr, spi, nexthdr, family);
if (x == NULL) {
- XFRM_INC_STATS(LINUX_MIB_XFRMINNOSTATES);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINNOSTATES);
xfrm_audit_state_notfound(skb, family, spi, seq);
goto drop;
}
@@ -162,22 +163,22 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
spin_lock(&x->lock);
if (unlikely(x->km.state != XFRM_STATE_VALID)) {
- XFRM_INC_STATS(LINUX_MIB_XFRMINSTATEINVALID);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEINVALID);
goto drop_unlock;
}
if ((x->encap ? x->encap->encap_type : 0) != encap_type) {
- XFRM_INC_STATS(LINUX_MIB_XFRMINSTATEMISMATCH);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEMISMATCH);
goto drop_unlock;
}
if (x->props.replay_window && xfrm_replay_check(x, skb, seq)) {
- XFRM_INC_STATS(LINUX_MIB_XFRMINSTATESEQERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATESEQERROR);
goto drop_unlock;
}
if (xfrm_state_check_expire(x)) {
- XFRM_INC_STATS(LINUX_MIB_XFRMINSTATEEXPIRED);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEEXPIRED);
goto drop_unlock;
}
@@ -198,7 +199,7 @@ resume:
x->type->proto);
x->stats.integrity_failed++;
}
- XFRM_INC_STATS(LINUX_MIB_XFRMINSTATEPROTOERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEPROTOERROR);
goto drop_unlock;
}
@@ -224,7 +225,7 @@ resume:
}
if (inner_mode->input(x, skb)) {
- XFRM_INC_STATS(LINUX_MIB_XFRMINSTATEMODEERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEMODEERROR);
goto drop;
}
@@ -242,7 +243,7 @@ resume:
err = xfrm_parse_spi(skb, nexthdr, &spi, &seq);
if (err < 0) {
- XFRM_INC_STATS(LINUX_MIB_XFRMINHDRERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMINHDRERROR);
goto drop;
}
} while (!err);
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index dc50f1e71f7..c235597ba8d 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -41,6 +41,7 @@ static int xfrm_output_one(struct sk_buff *skb, int err)
{
struct dst_entry *dst = skb->dst;
struct xfrm_state *x = dst->xfrm;
+ struct net *net = xs_net(x);
if (err <= 0)
goto resume;
@@ -48,33 +49,33 @@ static int xfrm_output_one(struct sk_buff *skb, int err)
do {
err = xfrm_state_check_space(x, skb);
if (err) {
- XFRM_INC_STATS(LINUX_MIB_XFRMOUTERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
goto error_nolock;
}
err = x->outer_mode->output(x, skb);
if (err) {
- XFRM_INC_STATS(LINUX_MIB_XFRMOUTSTATEMODEERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEMODEERROR);
goto error_nolock;
}
spin_lock_bh(&x->lock);
err = xfrm_state_check_expire(x);
if (err) {
- XFRM_INC_STATS(LINUX_MIB_XFRMOUTSTATEEXPIRED);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEEXPIRED);
goto error;
}
if (x->type->flags & XFRM_TYPE_REPLAY_PROT) {
XFRM_SKB_CB(skb)->seq.output = ++x->replay.oseq;
if (unlikely(x->replay.oseq == 0)) {
- XFRM_INC_STATS(LINUX_MIB_XFRMOUTSTATESEQERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATESEQERROR);
x->replay.oseq--;
xfrm_audit_state_replay_overflow(x, skb);
err = -EOVERFLOW;
goto error;
}
- if (xfrm_aevent_is_on())
+ if (xfrm_aevent_is_on(net))
xfrm_replay_notify(x, XFRM_REPLAY_UPDATE);
}
@@ -89,12 +90,12 @@ static int xfrm_output_one(struct sk_buff *skb, int err)
resume:
if (err) {
- XFRM_INC_STATS(LINUX_MIB_XFRMOUTSTATEPROTOERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATEPROTOERROR);
goto error_nolock;
}
if (!(skb->dst = dst_pop(dst))) {
- XFRM_INC_STATS(LINUX_MIB_XFRMOUTERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
err = -EHOSTUNREACH;
goto error_nolock;
}
@@ -178,6 +179,7 @@ static int xfrm_output_gso(struct sk_buff *skb)
int xfrm_output(struct sk_buff *skb)
{
+ struct net *net = dev_net(skb->dst->dev);
int err;
if (skb_is_gso(skb))
@@ -186,7 +188,7 @@ int xfrm_output(struct sk_buff *skb)
if (skb->ip_summed == CHECKSUM_PARTIAL) {
err = skb_checksum_help(skb);
if (err) {
- XFRM_INC_STATS(LINUX_MIB_XFRMOUTERROR);
+ XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTERROR);
kfree_skb(skb);
return err;
}
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index fb216c9adf8..9c068ab3a83 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -34,28 +34,16 @@
#include "xfrm_hash.h"
-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);
static DEFINE_RWLOCK(xfrm_policy_lock);
-static struct list_head xfrm_policy_all;
-unsigned int xfrm_policy_count[XFRM_POLICY_MAX*2];
-EXPORT_SYMBOL(xfrm_policy_count);
-
static DEFINE_RWLOCK(xfrm_policy_afinfo_lock);
static struct xfrm_policy_afinfo *xfrm_policy_afinfo[NPROTO];
static struct kmem_cache *xfrm_dst_cache __read_mostly;
-static struct work_struct xfrm_policy_gc_work;
static HLIST_HEAD(xfrm_policy_gc_list);
static DEFINE_SPINLOCK(xfrm_policy_gc_lock);
@@ -63,6 +51,9 @@ static struct xfrm_policy_afinfo *xfrm_policy_get_afinfo(unsigned short family);
static void xfrm_policy_put_afinfo(struct xfrm_policy_afinfo *afinfo);
static void xfrm_init_pmtu(struct dst_entry *dst);
+static struct xfrm_policy *__xfrm_policy_unlink(struct xfrm_policy *pol,
+ int dir);
+
static inline int
__xfrm4_selector_match(struct xfrm_selector *sel, struct flowi *fl)
{
@@ -97,7 +88,7 @@ int xfrm_selector_match(struct xfrm_selector *sel, struct flowi *fl,
return 0;
}
-static inline struct dst_entry *__xfrm_dst_lookup(int tos,
+static inline struct dst_entry *__xfrm_dst_lookup(struct net *net, int tos,
xfrm_address_t *saddr,
xfrm_address_t *daddr,
int family)
@@ -109,7 +100,7 @@ static inline struct dst_entry *__xfrm_dst_lookup(int tos,
if (unlikely(afinfo == NULL))
return ERR_PTR(-EAFNOSUPPORT);
- dst = afinfo->dst_lookup(tos, saddr, daddr);
+ dst = afinfo->dst_lookup(net, tos, saddr, daddr);
xfrm_policy_put_afinfo(afinfo);
@@ -121,6 +112,7 @@ static inline struct dst_entry *xfrm_dst_lookup(struct xfrm_state *x, int tos,
xfrm_address_t *prev_daddr,
int family)
{
+ struct net *net = xs_net(x);
xfrm_address_t *saddr = &x->props.saddr;
xfrm_address_t *daddr = &x->id.daddr;
struct dst_entry *dst;
@@ -134,7 +126,7 @@ static inline struct dst_entry *xfrm_dst_lookup(struct xfrm_state *x, int tos,
daddr = x->coaddr;
}
- dst = __xfrm_dst_lookup(tos, saddr, daddr, family);
+ dst = __xfrm_dst_lookup(net, tos, saddr, daddr, family);
if (!IS_ERR(dst)) {
if (prev_saddr != saddr)
@@ -229,13 +221,14 @@ expired:
* SPD calls.
*/
-struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp)
+struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp)
{
struct xfrm_policy *policy;
policy = kzalloc(sizeof(struct xfrm_policy), gfp);
if (policy) {
+ write_pnet(&policy->xp_net, net);
INIT_LIST_HEAD(&policy->walk.all);
INIT_HLIST_NODE(&policy->bydst);
INIT_HLIST_NODE(&policy->byidx);
@@ -296,6 +289,7 @@ static void xfrm_policy_gc_task(struct work_struct *work)
hlist_for_each_entry_safe(policy, entry, tmp, &gc_list, bydst)
xfrm_policy_gc_kill(policy);
}
+static DECLARE_WORK(xfrm_policy_gc_work, xfrm_policy_gc_task);
/* Rule must be locked. Release descentant resources, announce
* entry dead. The rule must be unlinked from lists to the moment.
@@ -322,38 +316,29 @@ static void xfrm_policy_kill(struct xfrm_policy *policy)
schedule_work(&xfrm_policy_gc_work);
}
-struct xfrm_policy_hash {
- struct hlist_head *table;
- unsigned int hmask;
-};
-
-static struct hlist_head xfrm_policy_inexact[XFRM_POLICY_MAX*2];
-static struct xfrm_policy_hash xfrm_policy_bydst[XFRM_POLICY_MAX*2] __read_mostly;
-static struct hlist_head *xfrm_policy_byidx __read_mostly;
-static unsigned int xfrm_idx_hmask __read_mostly;
static unsigned int xfrm_policy_hashmax __read_mostly = 1 * 1024 * 1024;
-static inline unsigned int idx_hash(u32 index)
+static inline unsigned int idx_hash(struct net *net, u32 index)
{
- return __idx_hash(index, xfrm_idx_hmask);
+ return __idx_hash(index, net->xfrm.policy_idx_hmask);
}
-static struct hlist_head *policy_hash_bysel(struct xfrm_selector *sel, unsigned short family, int dir)
+static struct hlist_head *policy_hash_bysel(struct net *net, struct xfrm_selector *sel, unsigned short family, int dir)
{
- unsigned int hmask = xfrm_policy_bydst[dir].hmask;
+ unsigned int hmask = net->xfrm.policy_bydst[dir].hmask;
unsigned int hash = __sel_hash(sel, family, hmask);
return (hash == hmask + 1 ?
- &xfrm_policy_inexact[dir] :
- xfrm_policy_bydst[dir].table + hash);
+ &net->xfrm.policy_inexact[dir] :
+ net->xfrm.policy_bydst[dir].table + hash);
}
-static struct hlist_head *policy_hash_direct(xfrm_address_t *daddr, xfrm_address_t *saddr, unsigned short family, int dir)
+static struct hlist_head *policy_hash_direct(struct net *net, xfrm_address_t *daddr, xfrm_address_t *saddr, unsigned short family, int dir)
{
- unsigned int hmask = xfrm_policy_bydst[dir].hmask;
+ unsigned int hmask = net->xfrm.policy_bydst[dir].hmask;
unsigned int hash = __addr_hash(daddr, saddr, family, hmask);
- return xfrm_policy_bydst[dir].table + hash;
+ return net->xfrm.policy_bydst[dir].table + hash;
}
static void xfrm_dst_hash_transfer(struct hlist_head *list,
@@ -408,12 +393,12 @@ static unsigned long xfrm_new_hash_mask(unsigned int old_hmask)
return ((old_hmask + 1) << 1) - 1;
}
-static void xfrm_bydst_resize(int dir)
+static void xfrm_bydst_resize(struct net *net, int dir)
{
- unsigned int hmask = xfrm_policy_bydst[dir].hmask;
+ unsigned int hmask = net->xfrm.policy_bydst[dir].hmask;
unsigned int nhashmask = xfrm_new_hash_mask(hmask);
unsigned int nsize = (nhashmask + 1) * sizeof(struct hlist_head);
- struct hlist_head *odst = xfrm_policy_bydst[dir].table;
+ struct hlist_head *odst = net->xfrm.policy_bydst[dir].table;
struct hlist_head *ndst = xfrm_hash_alloc(nsize);
int i;
@@ -425,20 +410,20 @@ static void xfrm_bydst_resize(int dir)
for (i = hmask; i >= 0; i--)
xfrm_dst_hash_transfer(odst + i, ndst, nhashmask);
- xfrm_policy_bydst[dir].table = ndst;
- xfrm_policy_bydst[dir].hmask = nhashmask;
+ net->xfrm.policy_bydst[dir].table = ndst;
+ net->xfrm.policy_bydst[dir].hmask = nhashmask;
write_unlock_bh(&xfrm_policy_lock);
xfrm_hash_free(odst, (hmask + 1) * sizeof(struct hlist_head));
}
-static void xfrm_byidx_resize(int total)
+static void xfrm_byidx_resize(struct net *net, int total)
{
- unsigned int hmask = xfrm_idx_hmask;
+ unsigned int hmask = net->xfrm.policy_idx_hmask;
unsigned int nhashmask = xfrm_new_hash_mask(hmask);
unsigned int nsize = (nhashmask + 1) * sizeof(struct hlist_head);
- struct hlist_head *oidx = xfrm_policy_byidx;
+ struct hlist_head *oidx = net->xfrm.policy_byidx;
struct hlist_head *nidx = xfrm_hash_alloc(nsize);
int i;
@@ -450,18 +435,18 @@ static void xfrm_byidx_resize(int total)
for (i = hmask; i >= 0; i--)
xfrm_idx_hash_transfer(oidx + i, nidx, nhashmask);
- xfrm_policy_byidx = nidx;
- xfrm_idx_hmask = nhashmask;
+ net->xfrm.policy_byidx = nidx;
+ net->xfrm.policy_idx_hmask = nhashmask;
write_unlock_bh(&xfrm_policy_lock);
xfrm_hash_free(oidx, (hmask + 1) * sizeof(struct hlist_head));
}
-static inline int xfrm_bydst_should_resize(int dir, int *total)
+static inline int xfrm_bydst_should_resize(struct net *net, int dir, int *total)
{
- unsigned int cnt = xfrm_policy_count[dir];
- unsigned int hmask = xfrm_policy_bydst[dir].hmask;
+ unsigned int cnt = net->xfrm.policy_count[dir];
+ unsigned int hmask = net->xfrm.policy_bydst[dir].hmask;
if (total)
*total += cnt;
@@ -473,9 +458,9 @@ static inline int xfrm_bydst_should_resize(int dir, int *total)
return 0;
}
-static inline int xfrm_byidx_should_resize(int total)
+static inline int xfrm_byidx_should_resize(struct net *net, int total)
{
- unsigned int hmask = xfrm_idx_hmask;
+ unsigned int hmask = net->xfrm.policy_idx_hmask;
if ((hmask + 1) < xfrm_policy_hashmax &&
total > hmask)
@@ -487,41 +472,40 @@ static inline int xfrm_byidx_should_resize(int total)
void xfrm_spd_getinfo(struct xfrmk_spdinfo *si)
{
read_lock_bh(&xfrm_policy_lock);
- si->incnt = xfrm_policy_count[XFRM_POLICY_IN];
- si->outcnt = xfrm_policy_count[XFRM_POLICY_OUT];
- si->fwdcnt = xfrm_policy_count[XFRM_POLICY_FWD];
- si->inscnt = xfrm_policy_count[XFRM_POLICY_IN+XFRM_POLICY_MAX];
- si->outscnt = xfrm_policy_count[XFRM_POLICY_OUT+XFRM_POLICY_MAX];
- si->fwdscnt = xfrm_policy_count[XFRM_POLICY_FWD+XFRM_POLICY_MAX];
- si->spdhcnt = xfrm_idx_hmask;
+ si->incnt = init_net.xfrm.policy_count[XFRM_POLICY_IN];
+ si->outcnt = init_net.xfrm.policy_count[XFRM_POLICY_OUT];
+ si->fwdcnt = init_net.xfrm.policy_count[XFRM_POLICY_FWD];
+ si->inscnt = init_net.xfrm.policy_count[XFRM_POLICY_IN+XFRM_POLICY_MAX];
+ si->outscnt = init_net.xfrm.policy_count[XFRM_POLICY_OUT+XFRM_POLICY_MAX];
+ si->fwdscnt = init_net.xfrm.policy_count[XFRM_POLICY_FWD+XFRM_POLICY_MAX];
+ si->spdhcnt = init_net.xfrm.policy_idx_hmask;
si->spdhmcnt = xfrm_policy_hashmax;
read_unlock_bh(&xfrm_policy_lock);
}
EXPORT_SYMBOL(xfrm_spd_getinfo);
static DEFINE_MUTEX(hash_resize_mutex);
-static void xfrm_hash_resize(struct work_struct *__unused)
+static void xfrm_hash_resize(struct work_struct *work)
{
+ struct net *net = container_of(work, struct net, xfrm.policy_hash_work);
int dir, total;
mutex_lock(&hash_resize_mutex);
total = 0;
for (dir = 0; dir < XFRM_POLICY_MAX * 2; dir++) {
- if (xfrm_bydst_should_resize(dir, &total))
- xfrm_bydst_resize(dir);
+ if (xfrm_bydst_should_resize(net, dir, &total))
+ xfrm_bydst_resize(net, dir);
}
- if (xfrm_byidx_should_resize(total))
- xfrm_byidx_resize(total);
+ if (xfrm_byidx_should_resize(net, total))
+ xfrm_byidx_resize(net, total);
mutex_unlock(&hash_resize_mutex);
}
-static DECLARE_WORK(xfrm_hash_work, xfrm_hash_resize);
-
/* Generate new index... KAME seems to generate them ordered by cost
* of an absolute inpredictability of ordering of rules. This will not pass. */
-static u32 xfrm_gen_index(u8 type, int dir)
+static u32 xfrm_gen_index(struct net *net, int dir)
{
static u32 idx_generator;
@@ -536,7 +520,7 @@ static u32 xfrm_gen_index(u8 type, int dir)
idx_generator += 8;
if (idx == 0)
idx = 8;
- list = xfrm_policy_byidx + idx_hash(idx);
+ list = net->xfrm.policy_byidx + idx_hash(net, idx);
found = 0;
hlist_for_each_entry(p, entry, list, byidx) {
if (p->index == idx) {
@@ -566,6 +550,7 @@ static inline int selector_cmp(struct xfrm_selector *s1, struct xfrm_selector *s
int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
{
+ struct net *net = xp_net(policy);
struct xfrm_policy *pol;
struct xfrm_policy *delpol;
struct hlist_head *chain;
@@ -573,7 +558,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
struct dst_entry *gc_list;
write_lock_bh(&xfrm_policy_lock);
- chain = policy_hash_bysel(&policy->selector, policy->family, dir);
+ chain = policy_hash_bysel(net, &policy->selector, policy->family, dir);
delpol = NULL;
newpos = NULL;
hlist_for_each_entry(pol, entry, chain, bydst) {
@@ -600,27 +585,23 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
else
hlist_add_head(&policy->bydst, chain);
xfrm_pol_hold(policy);
- xfrm_policy_count[dir]++;
+ net->xfrm.policy_count[dir]++;
atomic_inc(&flow_cache_genid);
- if (delpol) {
- hlist_del(&delpol->bydst);
- hlist_del(&delpol->byidx);
- list_del(&delpol->walk.all);
- xfrm_policy_count[dir]--;
- }
- policy->index = delpol ? delpol->index : xfrm_gen_index(policy->type, dir);
- hlist_add_head(&policy->byidx, xfrm_policy_byidx+idx_hash(policy->index));
+ if (delpol)
+ __xfrm_policy_unlink(delpol, dir);
+ policy->index = delpol ? delpol->index : xfrm_gen_index(net, dir);
+ hlist_add_head(&policy->byidx, net->xfrm.policy_byidx+idx_hash(net, policy->index));
policy->curlft.add_time = get_seconds();
policy->curlft.use_time = 0;
if (!mod_timer(&policy->timer, jiffies + HZ))
xfrm_pol_hold(policy);
- list_add(&policy->walk.all, &xfrm_policy_all);
+ list_add(&policy->walk.all, &net->xfrm.policy_all);
write_unlock_bh(&xfrm_policy_lock);
if (delpol)
xfrm_policy_kill(delpol);
- else if (xfrm_bydst_should_resize(dir, NULL))
- schedule_work(&xfrm_hash_work);
+ else if (xfrm_bydst_should_resize(net, dir, NULL))
+ schedule_work(&net->xfrm.policy_hash_work);
read_lock_bh(&xfrm_policy_lock);
gc_list = NULL;
@@ -654,7 +635,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
}
EXPORT_SYMBOL(xfrm_policy_insert);
-struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
+struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u8 type, int dir,
struct xfrm_selector *sel,
struct xfrm_sec_ctx *ctx, int delete,
int *err)
@@ -665,7 +646,7 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
*err = 0;
write_lock_bh(&xfrm_policy_lock);
- chain = policy_hash_bysel(sel, sel->family, dir);
+ chain = policy_hash_bysel(net, sel, sel->family, dir);
ret = NULL;
hlist_for_each_entry(pol, entry, chain, bydst) {
if (pol->type == type &&
@@ -679,10 +660,7 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
write_unlock_bh(&xfrm_policy_lock);
return pol;
}
- hlist_del(&pol->bydst);
- hlist_del(&pol->byidx);
- list_del(&pol->walk.all);
- xfrm_policy_count[dir]--;
+ __xfrm_policy_unlink(pol, dir);
}
ret = pol;
break;
@@ -698,8 +676,8 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
}
EXPORT_SYMBOL(xfrm_policy_bysel_ctx);
-struct xfrm_policy *xfrm_policy_byid(u8 type, int dir, u32 id, int delete,
- int *err)
+struct xfrm_policy *xfrm_policy_byid(struct net *net, u8 type, int dir, u32 id,
+ int delete, int *err)
{
struct xfrm_policy *pol, *ret;
struct hlist_head *chain;
@@ -711,7 +689,7 @@ struct xfrm_policy *xfrm_policy_byid(u8 type, int dir, u32 id, int delete,
*err = 0;
write_lock_bh(&xfrm_policy_lock);
- chain = xfrm_policy_byidx + idx_hash(id);
+ chain = net->xfrm.policy_byidx + idx_hash(net, id);
ret = NULL;
hlist_for_each_entry(pol, entry, chain, byidx) {
if (pol->type == type && pol->index == id) {
@@ -723,10 +701,7 @@ struct xfrm_policy *xfrm_policy_byid(u8 type, int dir, u32 id, int delete,
write_unlock_bh(&xfrm_policy_lock);
return pol;
}
- hlist_del(&pol->bydst);
- hlist_del(&pol->byidx);
- list_del(&pol->walk.all);
- xfrm_policy_count[dir]--;
+ __xfrm_policy_unlink(pol, dir);
}
ret = pol;
break;
@@ -744,7 +719,7 @@ EXPORT_SYMBOL(xfrm_policy_byid);
#ifdef CONFIG_SECURITY_NETWORK_XFRM
static inline int
-xfrm_policy_flush_secctx_check(u8 type, struct xfrm_audit *audit_info)
+xfrm_policy_flush_secctx_check(struct net *net, u8 type, struct xfrm_audit *audit_info)
{
int dir, err = 0;
@@ -754,7 +729,7 @@ xfrm_policy_flush_secctx_check(u8 type, struct xfrm_audit *audit_info)
int i;
hlist_for_each_entry(pol, entry,
- &xfrm_policy_inexact[dir], bydst) {
+ &net->xfrm.policy_inexact[dir], bydst) {
if (pol->type != type)
continue;
err = security_xfrm_policy_delete(pol->security);
@@ -766,9 +741,9 @@ xfrm_policy_flush_secctx_check(u8 type, struct xfrm_audit *audit_info)
return err;
}
}
- for (i = xfrm_policy_bydst[dir].hmask; i >= 0; i--) {
+ for (i = net->xfrm.policy_bydst[dir].hmask; i >= 0; i--) {
hlist_for_each_entry(pol, entry,
- xfrm_policy_bydst[dir].table + i,
+ net->xfrm.policy_bydst[dir].table + i,
bydst) {
if (pol->type != type)
continue;
@@ -788,36 +763,33 @@ xfrm_policy_flush_secctx_check(u8 type, struct xfrm_audit *audit_info)
}
#else
static inline int
-xfrm_policy_flush_secctx_check(u8 type, struct xfrm_audit *audit_info)
+xfrm_policy_flush_secctx_check(struct net *net, u8 type, struct xfrm_audit *audit_info)
{
return 0;
}
#endif
-int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info)
+int xfrm_policy_flush(struct net *net, u8 type, struct xfrm_audit *audit_info)
{
int dir, err = 0;
write_lock_bh(&xfrm_policy_lock);
- err = xfrm_policy_flush_secctx_check(type, audit_info);
+ err = xfrm_policy_flush_secctx_check(net, type, audit_info);
if (err)
goto out;
for (dir = 0; dir < XFRM_POLICY_MAX; dir++) {
struct xfrm_policy *pol;
struct hlist_node *entry;
- int i, killed;
+ int i;
- killed = 0;
again1:
hlist_for_each_entry(pol, entry,
- &xfrm_policy_inexact[dir], bydst) {
+ &net->xfrm.policy_inexact[dir], bydst) {
if (pol->type != type)
continue;
- hlist_del(&pol->bydst);
- hlist_del(&pol->byidx);
- list_del(&pol->walk.all);
+ __xfrm_policy_unlink(pol, dir);
write_unlock_bh(&xfrm_policy_lock);
xfrm_audit_policy_delete(pol, 1, audit_info->loginuid,
@@ -825,22 +797,19 @@ int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info)
audit_info->secid);
xfrm_policy_kill(pol);
- killed++;
write_lock_bh(&xfrm_policy_lock);
goto again1;
}
- for (i = xfrm_policy_bydst[dir].hmask; i >= 0; i--) {
+ for (i = net->xfrm.policy_bydst[dir].hmask; i >= 0; i--) {
again2:
hlist_for_each_entry(pol, entry,
- xfrm_policy_bydst[dir].table + i,
+ net->xfrm.policy_bydst[dir].table + i,
bydst) {
if (pol->type != type)
continue;
- hlist_del(&pol->bydst);
- hlist_del(&pol->byidx);
- list_del(&pol->walk.all);
+ __xfrm_policy_unlink(pol, dir);
write_unlock_bh(&xfrm_policy_lock);
xfrm_audit_policy_delete(pol, 1,
@@ -848,14 +817,12 @@ int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info)
audit_info->sessionid,
audit_info->secid);
xfrm_policy_kill(pol);
- killed++;
write_lock_bh(&xfrm_policy_lock);
goto again2;
}
}
- xfrm_policy_count[dir] -= killed;
}
atomic_inc(&flow_cache_genid);
out:
@@ -864,7 +831,7 @@ out:
}
EXPORT_SYMBOL(xfrm_policy_flush);
-int xfrm_policy_walk(struct xfrm_policy_walk *walk,
+int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk,
int (*func)(struct xfrm_policy *, int, int, void*),
void *data)
{
@@ -881,10 +848,10 @@ int xfrm_policy_walk(struct xfrm_policy_walk *walk,
write_lock_bh(&xfrm_policy_lock);
if (list_empty(&walk->walk.all))
- x = list_first_entry(&xfrm_policy_all, struct xfrm_policy_walk_entry, all);
+ x = list_first_entry(&net->xfrm.policy_all, struct xfrm_policy_walk_entry, all);
else
x = list_entry(&walk->walk.all, struct xfrm_policy_walk_entry, all);
- list_for_each_entry_from(x, &xfrm_policy_all, all) {
+ list_for_each_entry_from(x, &net->xfrm.policy_all, all) {
if (x->dead)
continue;
pol = container_of(x, struct xfrm_policy, walk);
@@ -953,7 +920,8 @@ static int xfrm_policy_match(struct xfrm_policy *pol, struct flowi *fl,
return ret;
}
-static struct xfrm_policy *xfrm_policy_lookup_bytype(u8 type, struct flowi *fl,
+static struct xfrm_policy *xfrm_policy_lookup_bytype(struct net *net, u8 type,
+ struct flowi *fl,
u16 family, u8 dir)
{
int err;
@@ -969,7 +937,7 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(u8 type, struct flowi *fl,
return NULL;
read_lock_bh(&xfrm_policy_lock);
- chain = policy_hash_direct(daddr, saddr, family, dir);
+ chain = policy_hash_direct(net, daddr, saddr, family, dir);
ret = NULL;
hlist_for_each_entry(pol, entry, chain, bydst) {
err = xfrm_policy_match(pol, fl, type, family, dir);
@@ -986,7 +954,7 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(u8 type, struct flowi *fl,
break;
}
}
- chain = &xfrm_policy_inexact[dir];
+ chain = &net->xfrm.policy_inexact[dir];
hlist_for_each_entry(pol, entry, chain, bydst) {
err = xfrm_policy_match(pol, fl, type, family, dir);
if (err) {
@@ -1009,14 +977,14 @@ fail:
return ret;
}
-static int xfrm_policy_lookup(struct flowi *fl, u16 family, u8 dir,
- void **objp, atomic_t **obj_refp)
+static int xfrm_policy_lookup(struct net *net, struct flowi *fl, u16 family,
+ u8 dir, void **objp, atomic_t **obj_refp)
{
struct xfrm_policy *pol;
int err = 0;
#ifdef CONFIG_XFRM_SUB_POLICY
- pol = xfrm_policy_lookup_bytype(XFRM_POLICY_TYPE_SUB, fl, family, dir);
+ pol = xfrm_policy_lookup_bytype(net, XFRM_POLICY_TYPE_SUB, fl, family, dir);
if (IS_ERR(pol)) {
err = PTR_ERR(pol);
pol = NULL;
@@ -1024,7 +992,7 @@ static int xfrm_policy_lookup(struct flowi *fl, u16 family, u8 dir,
if (pol || err)
goto end;
#endif
- pol = xfrm_policy_lookup_bytype(XFRM_POLICY_TYPE_MAIN, fl, family, dir);
+ pol = xfrm_policy_lookup_bytype(net, XFRM_POLICY_TYPE_MAIN, fl, family, dir);
if (IS_ERR(pol)) {
err = PTR_ERR(pol);
pol = NULL;
@@ -1083,29 +1051,32 @@ static struct xfrm_policy *xfrm_sk_policy_lookup(struct sock *sk, int dir, struc
static void __xfrm_policy_link(struct xfrm_policy *pol, int dir)
{
- struct hlist_head *chain = policy_hash_bysel(&pol->selector,
+ struct net *net = xp_net(pol);
+ struct hlist_head *chain = policy_hash_bysel(net, &pol->selector,
pol->family, dir);
- list_add(&pol->walk.all, &xfrm_policy_all);
+ list_add(&pol->walk.all, &net->xfrm.policy_all);
hlist_add_head(&pol->bydst, chain);
- hlist_add_head(&pol->byidx, xfrm_policy_byidx+idx_hash(pol->index));
- xfrm_policy_count[dir]++;
+ hlist_add_head(&pol->byidx, net->xfrm.policy_byidx+idx_hash(net, pol->index));
+ net->xfrm.policy_count[dir]++;
xfrm_pol_hold(pol);
- if (xfrm_bydst_should_resize(dir, NULL))
- schedule_work(&xfrm_hash_work);
+ if (xfrm_bydst_should_resize(net, dir, NULL))
+ schedule_work(&net->xfrm.policy_hash_work);
}
static struct xfrm_policy *__xfrm_policy_unlink(struct xfrm_policy *pol,
int dir)
{
+ struct net *net = xp_net(pol);
+
if (hlist_unhashed(&pol->bydst))
return NULL;
hlist_del(&pol->bydst);
hlist_del(&pol->byidx);
list_del(&pol->walk.all);
- xfrm_policy_count[dir]--;
+ net->xfrm.policy_count[dir]--;
return pol;
}
@@ -1127,6 +1098,7 @@ EXPORT_SYMBOL(xfrm_policy_delete);
int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol)
{
+ struct net *net = xp_net(pol);
struct xfrm_policy *old_pol;
#ifdef CONFIG_XFRM_SUB_POLICY
@@ -1139,7 +1111,7 @@ int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol)
sk->sk_policy[dir] = pol;
if (pol) {
pol->curlft.add_time = get_seconds();
- pol->index = xfrm_gen_index(pol->type, XFRM_POLICY_MAX+dir);
+ pol->index = xfrm_gen_index(net, XFRM_POLICY_MAX+dir);
__xfrm_policy_link(pol, XFRM_POLICY_MAX+dir);
}
if (old_pol)
@@ -1154,7 +1126,7 @@ int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol)
static struct xfrm_policy *clone_policy(struct xfrm_policy *old, int dir)
{
- struct xfrm_policy *newp = xfrm_policy_alloc(GFP_ATOMIC);
+ struct xfrm_policy *newp = xfrm_policy_alloc(xp_net(old), GFP_ATOMIC);
if (newp) {
newp->selector = old->selector;
@@ -1194,7 +1166,7 @@ int __xfrm_sk_clone_policy(struct sock *sk)
}
static int
-xfrm_get_saddr(xfrm_address_t *local, xfrm_address_t *remote,
+xfrm_get_saddr(struct net *net, xfrm_address_t *local, xfrm_address_t *remote,
unsigned short family)
{
int err;
@@ -1202,7 +1174,7 @@ xfrm_get_saddr(xfrm_address_t *local, xfrm_address_t *remote,
if (unlikely(afinfo == NULL))
return -EINVAL;
- err = afinfo->get_saddr(local, remote);
+ err = afinfo->get_saddr(net, local, remote);
xfrm_policy_put_afinfo(afinfo);
return err;
}
@@ -1214,6 +1186,7 @@ xfrm_tmpl_resolve_one(struct xfrm_policy *policy, struct flowi *fl,
struct xfrm_state **xfrm,
unsigned short family)
{
+ struct net *net = xp_net(policy);
int nx;
int i, error;
xfrm_address_t *daddr = xfrm_flowi_daddr(fl, family);
@@ -1232,7 +1205,7 @@ xfrm_tmpl_resolve_one(struct xfrm_policy *policy, struct flowi *fl,
local = &tmpl->saddr;
family = tmpl->encap_family;
if (xfrm_addr_any(local, family)) {
- error = xfrm_get_saddr(&tmp, remote, family);
+ error = xfrm_get_saddr(net, &tmp, remote, family);
if (error)
goto fail;
local = &tmp;
@@ -1546,7 +1519,7 @@ static int stale_bundle(struct dst_entry *dst);
* At the moment we eat a raw IP route. Mostly to speed up lookups
* on interfaces with disabled IPsec.
*/
-int __xfrm_lookup(struct dst_entry **dst_p, struct flowi *fl,
+int __xfrm_lookup(struct net *net, struct dst_entry **dst_p, struct flowi *fl,
struct sock *sk, int flags)
{
struct xfrm_policy *policy;
@@ -1576,7 +1549,7 @@ 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;
}
}
@@ -1584,14 +1557,14 @@ restart:
if (!policy) {
/* To accelerate a bit... */
if ((dst_orig->flags & DST_NOXFRM) ||
- !xfrm_policy_count[XFRM_POLICY_OUT])
+ !net->xfrm.policy_count[XFRM_POLICY_OUT])
goto nopol;
- policy = flow_cache_lookup(fl, dst_orig->ops->family,
+ policy = flow_cache_lookup(net, fl, dst_orig->ops->family,
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;
}
}
@@ -1614,7 +1587,7 @@ 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;
@@ -1634,7 +1607,7 @@ 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;
}
@@ -1644,17 +1617,18 @@ restart:
#ifdef CONFIG_XFRM_SUB_POLICY
if (pols[0]->type != XFRM_POLICY_TYPE_MAIN) {
- pols[1] = xfrm_policy_lookup_bytype(XFRM_POLICY_TYPE_MAIN,
+ pols[1] = xfrm_policy_lookup_bytype(net,
+ XFRM_POLICY_TYPE_MAIN,
fl, family,
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;
}
@@ -1681,27 +1655,27 @@ restart:
if (unlikely(nx<0)) {
err = nx;
- if (err == -EAGAIN && sysctl_xfrm_larval_drop) {
+ if (err == -EAGAIN && net->xfrm.sysctl_larval_drop) {
/* 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;
}
if (err == -EAGAIN && (flags & XFRM_LOOKUP_WAIT)) {
DECLARE_WAITQUEUE(wait, current);
- add_wait_queue(&km_waitq, &wait);
+ add_wait_queue(&net->xfrm.km_waitq, &wait);
set_current_state(TASK_INTERRUPTIBLE);
schedule();
set_current_state(TASK_RUNNING);
- remove_wait_queue(&km_waitq, &wait);
+ remove_wait_queue(&net->xfrm.km_waitq, &wait);
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;
}
@@ -1713,7 +1687,7 @@ restart:
err = nx;