net: rename struct fqdir fields

Rename the @frags fields from structs netns_ipv4, netns_ipv6,
netns_nf_frag and netns_ieee802154_lowpan to @fqdir

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 88 insertions, 88 deletions

diff --git a/net/ieee802154/6lowpan/reassembly.c b/net/ieee802154/6lowpan/reassembly.c
index dc73452d3224..955047fe797a 100644
--- a/net/ieee802154/6lowpan/reassembly.c
+++ b/net/ieee802154/6lowpan/reassembly.c
@@ -79,7 +79,7 @@ fq_find(struct net *net, const struct lowpan_802154_cb *cb,
 	key.src = *src;
 	key.dst = *dst;
 
-	q = inet_frag_find(&ieee802154_lowpan->frags, &key);
+	q = inet_frag_find(&ieee802154_lowpan->fqdir, &key);
 	if (!q)
 		return NULL;
 
@@ -326,23 +326,23 @@ err:
 static struct ctl_table lowpan_frags_ns_ctl_table[] = {
 	{
 		.procname	= "6lowpanfrag_high_thresh",
-		.data		= &init_net.ieee802154_lowpan.frags.high_thresh,
+		.data		= &init_net.ieee802154_lowpan.fqdir.high_thresh,
 		.maxlen		= sizeof(unsigned long),
 		.mode		= 0644,
 		.proc_handler	= proc_doulongvec_minmax,
-		.extra1		= &init_net.ieee802154_lowpan.frags.low_thresh
+		.extra1		= &init_net.ieee802154_lowpan.fqdir.low_thresh
 	},
 	{
 		.procname	= "6lowpanfrag_low_thresh",
-		.data		= &init_net.ieee802154_lowpan.frags.low_thresh,
+		.data		= &init_net.ieee802154_lowpan.fqdir.low_thresh,
 		.maxlen		= sizeof(unsigned long),
 		.mode		= 0644,
 		.proc_handler	= proc_doulongvec_minmax,
-		.extra2		= &init_net.ieee802154_lowpan.frags.high_thresh
+		.extra2		= &init_net.ieee802154_lowpan.fqdir.high_thresh
 	},
 	{
 		.procname	= "6lowpanfrag_time",
-		.data		= &init_net.ieee802154_lowpan.frags.timeout,
+		.data		= &init_net.ieee802154_lowpan.fqdir.timeout,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_jiffies,
@@ -377,11 +377,11 @@ static int __net_init lowpan_frags_ns_sysctl_register(struct net *net)
 		if (table == NULL)
 			goto err_alloc;
 
-		table[0].data = &ieee802154_lowpan->frags.high_thresh;
-		table[0].extra1 = &ieee802154_lowpan->frags.low_thresh;
-		table[1].data = &ieee802154_lowpan->frags.low_thresh;
-		table[1].extra2 = &ieee802154_lowpan->frags.high_thresh;
-		table[2].data = &ieee802154_lowpan->frags.timeout;
+		table[0].data = &ieee802154_lowpan->fqdir.high_thresh;
+		table[0].extra1 = &ieee802154_lowpan->fqdir.low_thresh;
+		table[1].data = &ieee802154_lowpan->fqdir.low_thresh;
+		table[1].extra2 = &ieee802154_lowpan->fqdir.high_thresh;
+		table[2].data = &ieee802154_lowpan->fqdir.timeout;
 
 		/* Don't export sysctls to unprivileged users */
 		if (net->user_ns != &init_user_ns)
@@ -454,17 +454,17 @@ static int __net_init lowpan_frags_init_net(struct net *net)
 		net_ieee802154_lowpan(net);
 	int res;
 
-	ieee802154_lowpan->frags.high_thresh = IPV6_FRAG_HIGH_THRESH;
-	ieee802154_lowpan->frags.low_thresh = IPV6_FRAG_LOW_THRESH;
-	ieee802154_lowpan->frags.timeout = IPV6_FRAG_TIMEOUT;
-	ieee802154_lowpan->frags.f = &lowpan_frags;
+	ieee802154_lowpan->fqdir.high_thresh = IPV6_FRAG_HIGH_THRESH;
+	ieee802154_lowpan->fqdir.low_thresh = IPV6_FRAG_LOW_THRESH;
+	ieee802154_lowpan->fqdir.timeout = IPV6_FRAG_TIMEOUT;
+	ieee802154_lowpan->fqdir.f = &lowpan_frags;
 
-	res = inet_frags_init_net(&ieee802154_lowpan->frags);
+	res = inet_frags_init_net(&ieee802154_lowpan->fqdir);
 	if (res < 0)
 		return res;
 	res = lowpan_frags_ns_sysctl_register(net);
 	if (res < 0)
-		fqdir_exit(&ieee802154_lowpan->frags);
+		fqdir_exit(&ieee802154_lowpan->fqdir);
 	return res;
 }
 
@@ -474,7 +474,7 @@ static void __net_exit lowpan_frags_exit_net(struct net *net)
 		net_ieee802154_lowpan(net);
 
 	lowpan_frags_ns_sysctl_unregister(net);
-	fqdir_exit(&ieee802154_lowpan->frags);
+	fqdir_exit(&ieee802154_lowpan->fqdir);
 }
 
 static struct pernet_operations lowpan_frags_ops = {
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 9de13b5d23e3..f1831367cc2b 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -83,7 +83,7 @@ static void ip4_frag_init(struct inet_frag_queue *q, const void *a)
 {
 	struct ipq *qp = container_of(q, struct ipq, q);
 	struct netns_ipv4 *ipv4 = container_of(q->fqdir, struct netns_ipv4,
-					       frags);
+					       fqdir);
 	struct net *net = container_of(ipv4, struct net, ipv4);
 
 	const struct frag_v4_compare_key *key = a;
@@ -142,7 +142,7 @@ static void ip_expire(struct timer_list *t)
 	int err;
 
 	qp = container_of(frag, struct ipq, q);
-	net = container_of(qp->q.fqdir, struct net, ipv4.frags);
+	net = container_of(qp->q.fqdir, struct net, ipv4.fqdir);
 
 	rcu_read_lock();
 	spin_lock(&qp->q.lock);
@@ -211,7 +211,7 @@ static struct ipq *ip_find(struct net *net, struct iphdr *iph,
 	};
 	struct inet_frag_queue *q;
 
-	q = inet_frag_find(&net->ipv4.frags, &key);
+	q = inet_frag_find(&net->ipv4.fqdir, &key);
 	if (!q)
 		return NULL;
 
@@ -239,7 +239,7 @@ static int ip_frag_too_far(struct ipq *qp)
 	if (rc) {
 		struct net *net;
 
-		net = container_of(qp->q.fqdir, struct net, ipv4.frags);
+		net = container_of(qp->q.fqdir, struct net, ipv4.fqdir);
 		__IP_INC_STATS(net, IPSTATS_MIB_REASMFAILS);
 	}
 
@@ -273,7 +273,7 @@ static int ip_frag_reinit(struct ipq *qp)
 /* Add new segment to existing queue. */
 static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
 {
-	struct net *net = container_of(qp->q.fqdir, struct net, ipv4.frags);
+	struct net *net = container_of(qp->q.fqdir, struct net, ipv4.fqdir);
 	int ihl, end, flags, offset;
 	struct sk_buff *prev_tail;
 	struct net_device *dev;
@@ -399,7 +399,7 @@ err:
 static int ip_frag_reasm(struct ipq *qp, struct sk_buff *skb,
 			 struct sk_buff *prev_tail, struct net_device *dev)
 {
-	struct net *net = container_of(qp->q.fqdir, struct net, ipv4.frags);
+	struct net *net = container_of(qp->q.fqdir, struct net, ipv4.fqdir);
 	struct iphdr *iph;
 	void *reasm_data;
 	int len, err;
@@ -544,30 +544,30 @@ static int dist_min;
 static struct ctl_table ip4_frags_ns_ctl_table[] = {
 	{
 		.procname	= "ipfrag_high_thresh",
-		.data		= &init_net.ipv4.frags.high_thresh,
+		.data		= &init_net.ipv4.fqdir.high_thresh,
 		.maxlen		= sizeof(unsigned long),
 		.mode		= 0644,
 		.proc_handler	= proc_doulongvec_minmax,
-		.extra1		= &init_net.ipv4.frags.low_thresh
+		.extra1		= &init_net.ipv4.fqdir.low_thresh
 	},
 	{
 		.procname	= "ipfrag_low_thresh",
-		.data		= &init_net.ipv4.frags.low_thresh,
+		.data		= &init_net.ipv4.fqdir.low_thresh,
 		.maxlen		= sizeof(unsigned long),
 		.mode		= 0644,
 		.proc_handler	= proc_doulongvec_minmax,
-		.extra2		= &init_net.ipv4.frags.high_thresh
+		.extra2		= &init_net.ipv4.fqdir.high_thresh
 	},
 	{
 		.procname	= "ipfrag_time",
-		.data		= &init_net.ipv4.frags.timeout,
+		.data		= &init_net.ipv4.fqdir.timeout,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_jiffies,
 	},
 	{
 		.procname	= "ipfrag_max_dist",
-		.data		= &init_net.ipv4.frags.max_dist,
+		.data		= &init_net.ipv4.fqdir.max_dist,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_minmax,
@@ -600,12 +600,12 @@ static int __net_init ip4_frags_ns_ctl_register(struct net *net)
 		if (!table)
 			goto err_alloc;
 
-		table[0].data = &net->ipv4.frags.high_thresh;
-		table[0].extra1 = &net->ipv4.frags.low_thresh;
-		table[1].data = &net->ipv4.frags.low_thresh;
-		table[1].extra2 = &net->ipv4.frags.high_thresh;
-		table[2].data = &net->ipv4.frags.timeout;
-		table[3].data = &net->ipv4.frags.max_dist;
+		table[0].data = &net->ipv4.fqdir.high_thresh;
+		table[0].extra1 = &net->ipv4.fqdir.low_thresh;
+		table[1].data = &net->ipv4.fqdir.low_thresh;
+		table[1].extra2 = &net->ipv4.fqdir.high_thresh;
+		table[2].data = &net->ipv4.fqdir.timeout;
+		table[3].data = &net->ipv4.fqdir.max_dist;
 	}
 
 	hdr = register_net_sysctl(net, "net/ipv4", table);
@@ -668,31 +668,31 @@ static int __net_init ipv4_frags_init_net(struct net *net)
 	 * we will prune down to 3MB, making room for approx 8 big 64K
 	 * fragments 8x128k.
 	 */
-	net->ipv4.frags.high_thresh = 4 * 1024 * 1024;
-	net->ipv4.frags.low_thresh  = 3 * 1024 * 1024;
+	net->ipv4.fqdir.high_thresh = 4 * 1024 * 1024;
+	net->ipv4.fqdir.low_thresh  = 3 * 1024 * 1024;
 	/*
 	 * Important NOTE! Fragment queue must be destroyed before MSL expires.
 	 * RFC791 is wrong proposing to prolongate timer each fragment arrival
 	 * by TTL.
 	 */
-	net->ipv4.frags.timeout = IP_FRAG_TIME;
+	net->ipv4.fqdir.timeout = IP_FRAG_TIME;
 
-	net->ipv4.frags.max_dist = 64;
-	net->ipv4.frags.f = &ip4_frags;
+	net->ipv4.fqdir.max_dist = 64;
+	net->ipv4.fqdir.f = &ip4_frags;
 
-	res = inet_frags_init_net(&net->ipv4.frags);
+	res = inet_frags_init_net(&net->ipv4.fqdir);
 	if (res < 0)
 		return res;
 	res = ip4_frags_ns_ctl_register(net);
 	if (res < 0)
-		fqdir_exit(&net->ipv4.frags);
+		fqdir_exit(&net->ipv4.fqdir);
 	return res;
 }
 
 static void __net_exit ipv4_frags_exit_net(struct net *net)
 {
 	ip4_frags_ns_ctl_unregister(net);
-	fqdir_exit(&net->ipv4.frags);
+	fqdir_exit(&net->ipv4.fqdir);
 }
 
 static struct pernet_operations ip4_frags_ops = {
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index c3610b37bb4c..3927e00084e8 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -72,8 +72,8 @@ static int sockstat_seq_show(struct seq_file *seq, void *v)
 	seq_printf(seq, "RAW: inuse %d\n",
 		   sock_prot_inuse_get(net, &raw_prot));
 	seq_printf(seq,  "FRAG: inuse %u memory %lu\n",
-		   atomic_read(&net->ipv4.frags.rhashtable.nelems),
-		   frag_mem_limit(&net->ipv4.frags));
+		   atomic_read(&net->ipv4.fqdir.rhashtable.nelems),
+		   frag_mem_limit(&net->ipv4.fqdir));
 	return 0;
 }
 
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index f08e1422c56d..46073e9a6c56 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -58,26 +58,26 @@ static struct inet_frags nf_frags;
 static struct ctl_table nf_ct_frag6_sysctl_table[] = {
 	{
 		.procname	= "nf_conntrack_frag6_timeout",
-		.data		= &init_net.nf_frag.frags.timeout,
+		.data		= &init_net.nf_frag.fqdir.timeout,
 		.maxlen		= sizeof(unsigned int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_jiffies,
 	},
 	{
 		.procname	= "nf_conntrack_frag6_low_thresh",
-		.data		= &init_net.nf_frag.frags.low_thresh,
+		.data		= &init_net.nf_frag.fqdir.low_thresh,
 		.maxlen		= sizeof(unsigned long),
 		.mode		= 0644,
 		.proc_handler	= proc_doulongvec_minmax,
-		.extra2		= &init_net.nf_frag.frags.high_thresh
+		.extra2		= &init_net.nf_frag.fqdir.high_thresh
 	},
 	{
 		.procname	= "nf_conntrack_frag6_high_thresh",
-		.data		= &init_net.nf_frag.frags.high_thresh,
+		.data		= &init_net.nf_frag.fqdir.high_thresh,
 		.maxlen		= sizeof(unsigned long),
 		.mode		= 0644,
 		.proc_handler	= proc_doulongvec_minmax,
-		.extra1		= &init_net.nf_frag.frags.low_thresh
+		.extra1		= &init_net.nf_frag.fqdir.low_thresh
 	},
 	{ }
 };
@@ -94,12 +94,12 @@ static int nf_ct_frag6_sysctl_register(struct net *net)
 		if (table == NULL)
 			goto err_alloc;
 
-		table[0].data = &net->nf_frag.frags.timeout;
-		table[1].data = &net->nf_frag.frags.low_thresh;
-		table[1].extra2 = &net->nf_frag.frags.high_thresh;
-		table[2].data = &net->nf_frag.frags.high_thresh;
-		table[2].extra1 = &net->nf_frag.frags.low_thresh;
-		table[2].extra2 = &init_net.nf_frag.frags.high_thresh;
+		table[0].data = &net->nf_frag.fqdir.timeout;
+		table[1].data = &net->nf_frag.fqdir.low_thresh;
+		table[1].extra2 = &net->nf_frag.fqdir.high_thresh;
+		table[2].data = &net->nf_frag.fqdir.high_thresh;
+		table[2].extra1 = &net->nf_frag.fqdir.low_thresh;
+		table[2].extra2 = &init_net.nf_frag.fqdir.high_thresh;
 	}
 
 	hdr = register_net_sysctl(net, "net/netfilter", table);
@@ -151,7 +151,7 @@ static void nf_ct_frag6_expire(struct timer_list *t)
 	struct net *net;
 
 	fq = container_of(frag, struct frag_queue, q);
-	net = container_of(fq->q.fqdir, struct net, nf_frag.frags);
+	net = container_of(fq->q.fqdir, struct net, nf_frag.fqdir);
 
 	ip6frag_expire_frag_queue(net, fq);
 }
@@ -169,7 +169,7 @@ static struct frag_queue *fq_find(struct net *net, __be32 id, u32 user,
 	};
 	struct inet_frag_queue *q;
 
-	q = inet_frag_find(&net->nf_frag.frags, &key);
+	q = inet_frag_find(&net->nf_frag.fqdir, &key);
 	if (!q)
 		return NULL;
 
@@ -496,24 +496,24 @@ static int nf_ct_net_init(struct net *net)
 {
 	int res;
 
-	net->nf_frag.frags.high_thresh = IPV6_FRAG_HIGH_THRESH;
-	net->nf_frag.frags.low_thresh = IPV6_FRAG_LOW_THRESH;
-	net->nf_frag.frags.timeout = IPV6_FRAG_TIMEOUT;
-	net->nf_frag.frags.f = &nf_frags;
+	net->nf_frag.fqdir.high_thresh = IPV6_FRAG_HIGH_THRESH;
+	net->nf_frag.fqdir.low_thresh = IPV6_FRAG_LOW_THRESH;
+	net->nf_frag.fqdir.timeout = IPV6_FRAG_TIMEOUT;
+	net->nf_frag.fqdir.f = &nf_frags;
 
-	res = inet_frags_init_net(&net->nf_frag.frags);
+	res = inet_frags_init_net(&net->nf_frag.fqdir);
 	if (res < 0)
 		return res;
 	res = nf_ct_frag6_sysctl_register(net);
 	if (res < 0)
-		fqdir_exit(&net->nf_frag.frags);
+		fqdir_exit(&net->nf_frag.fqdir);
 	return res;
 }
 
 static void nf_ct_net_exit(struct net *net)
 {
 	nf_ct_frags6_sysctl_unregister(net);
-	fqdir_exit(&net->nf_frag.frags);
+	fqdir_exit(&net->nf_frag.fqdir);
 }
 
 static struct pernet_operations nf_ct_net_ops = {
diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index 2356b4af7309..f3e3118393c4 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -48,8 +48,8 @@ static int sockstat6_seq_show(struct seq_file *seq, void *v)
 	seq_printf(seq, "RAW6: inuse %d\n",
 		       sock_prot_inuse_get(net, &rawv6_prot));
 	seq_printf(seq, "FRAG6: inuse %u memory %lu\n",
-		   atomic_read(&net->ipv6.frags.rhashtable.nelems),
-		   frag_mem_limit(&net->ipv6.frags));
+		   atomic_read(&net->ipv6.fqdir.rhashtable.nelems),
+		   frag_mem_limit(&net->ipv6.fqdir));
 	return 0;
 }
 
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index f1142f5d5075..5160fd9ed223 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -79,7 +79,7 @@ static void ip6_frag_expire(struct timer_list *t)
 	struct net *net;
 
 	fq = container_of(frag, struct frag_queue, q);
-	net = container_of(fq->q.fqdir, struct net, ipv6.frags);
+	net = container_of(fq->q.fqdir, struct net, ipv6.fqdir);
 
 	ip6frag_expire_frag_queue(net, fq);
 }
@@ -100,7 +100,7 @@ fq_find(struct net *net, __be32 id, const struct ipv6hdr *hdr, int iif)
 					    IPV6_ADDR_LINKLOCAL)))
 		key.iif = 0;
 
-	q = inet_frag_find(&net->ipv6.frags, &key);
+	q = inet_frag_find(&net->ipv6.fqdir, &key);
 	if (!q)
 		return NULL;
 
@@ -254,7 +254,7 @@ err:
 static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *skb,
 			  struct sk_buff *prev_tail, struct net_device *dev)
 {
-	struct net *net = container_of(fq->q.fqdir, struct net, ipv6.frags);
+	struct net *net = container_of(fq->q.fqdir, struct net, ipv6.fqdir);
 	unsigned int nhoff;
 	void *reasm_data;
 	int payload_len;
@@ -401,23 +401,23 @@ static const struct inet6_protocol frag_protocol = {
 static struct ctl_table ip6_frags_ns_ctl_table[] = {
 	{
 		.procname	= "ip6frag_high_thresh",
-		.data		= &init_net.ipv6.frags.high_thresh,
+		.data		= &init_net.ipv6.fqdir.high_thresh,
 		.maxlen		= sizeof(unsigned long),
 		.mode		= 0644,
 		.proc_handler	= proc_doulongvec_minmax,
-		.extra1		= &init_net.ipv6.frags.low_thresh
+		.extra1		= &init_net.ipv6.fqdir.low_thresh
 	},
 	{
 		.procname	= "ip6frag_low_thresh",
-		.data		= &init_net.ipv6.frags.low_thresh,
+		.data		= &init_net.ipv6.fqdir.low_thresh,
 		.maxlen		= sizeof(unsigned long),
 		.mode		= 0644,
 		.proc_handler	= proc_doulongvec_minmax,
-		.extra2		= &init_net.ipv6.frags.high_thresh
+		.extra2		= &init_net.ipv6.fqdir.high_thresh
 	},
 	{
 		.procname	= "ip6frag_time",
-		.data		= &init_net.ipv6.frags.timeout,
+		.data		= &init_net.ipv6.fqdir.timeout,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_jiffies,
@@ -449,11 +449,11 @@ static int __net_init ip6_frags_ns_sysctl_register(struct net *net)
 		if (!table)
 			goto err_alloc;
 
-		table[0].data = &net->ipv6.frags.high_thresh;
-		table[0].extra1 = &net->ipv6.frags.low_thresh;
-		table[1].data = &net->ipv6.frags.low_thresh;
-		table[1].extra2 = &net->ipv6.frags.high_thresh;
-		table[2].data = &net->ipv6.frags.timeout;
+		table[0].data = &net->ipv6.fqdir.high_thresh;
+		table[0].extra1 = &net->ipv6.fqdir.low_thresh;
+		table[1].data = &net->ipv6.fqdir.low_thresh;
+		table[1].extra2 = &net->ipv6.fqdir.high_thresh;
+		table[2].data = &net->ipv6.fqdir.timeout;
 	}
 
 	hdr = register_net_sysctl(net, "net/ipv6", table);
@@ -517,25 +517,25 @@ static int __net_init ipv6_frags_init_net(struct net *net)
 {
 	int res;
 
-	net->ipv6.frags.high_thresh = IPV6_FRAG_HIGH_THRESH;
-	net->ipv6.frags.low_thresh = IPV6_FRAG_LOW_THRESH;
-	net->ipv6.frags.timeout = IPV6_FRAG_TIMEOUT;
-	net->ipv6.frags.f = &ip6_frags;
+	net->ipv6.fqdir.high_thresh = IPV6_FRAG_HIGH_THRESH;
+	net->ipv6.fqdir.low_thresh = IPV6_FRAG_LOW_THRESH;
+	net->ipv6.fqdir.timeout = IPV6_FRAG_TIMEOUT;
+	net->ipv6.fqdir.f = &ip6_frags;
 
-	res = inet_frags_init_net(&net->ipv6.frags);
+	res = inet_frags_init_net(&net->ipv6.fqdir);
 	if (res < 0)
 		return res;
 
 	res = ip6_frags_ns_sysctl_register(net);
 	if (res < 0)
-		fqdir_exit(&net->ipv6.frags);
+		fqdir_exit(&net->ipv6.fqdir);
 	return res;
 }
 
 static void __net_exit ipv6_frags_exit_net(struct net *net)
 {
 	ip6_frags_ns_sysctl_unregister(net);
-	fqdir_exit(&net->ipv6.frags);
+	fqdir_exit(&net->ipv6.fqdir);
 }
 
 static struct pernet_operations ip6_frags_ops = {