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Commit d8cf757f authored by Peter Oskolkov's avatar Peter Oskolkov Committed by David S. Miller
Browse files

net: remove unused struct inet_frag_queue.fragments field 



Now that all users of struct inet_frag_queue have been converted
to use 'rb_fragments', remove the unused 'fragments' field.

Build with `make allyesconfig` succeeded. ip_defrag selftest passed.

Signed-off-by: default avatarPeter Oskolkov <posk@google.com>
Acked-by: default avatarStefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c14f7e1e

include/net/inet_frag.h

+1 −3
Original line number Diff line number Diff line
@@ -56,7 +56,6 @@ struct frag_v6_compare_key { 
 * @timer: queue expiration timer

 * @lock: spinlock protecting this frag

 * @refcnt: reference count of the queue

 * @fragments: received fragments head

 * @rb_fragments: received fragments rb-tree root

 * @fragments_tail: received fragments tail

 * @last_run_head: the head of the last "run". see ip_fragment.c
@@ -77,8 +76,7 @@ struct inet_frag_queue { 
	struct timer_list	timer;

	spinlock_t		lock;

	refcount_t		refcnt;

	struct sk_buff		*fragments;  /* used in 6lopwpan IPv6. */

	struct rb_root		rb_fragments; /* Used in IPv4/IPv6. */

	struct rb_root		rb_fragments;

	struct sk_buff		*fragments_tail;

	struct sk_buff		*last_run_head;

	ktime_t			stamp;

net/ieee802154/6lowpan/reassembly.c

+0 −1
Original line number Diff line number Diff line
@@ -179,7 +179,6 @@ static int lowpan_frag_reasm(struct lowpan_frag_queue *fq, struct sk_buff *skb, 


	skb->dev = ldev;

	skb->tstamp = fq->q.stamp;

	fq->q.fragments = NULL;

	fq->q.rb_fragments = RB_ROOT;

	fq->q.fragments_tail = NULL;

	fq->q.last_run_head = NULL;

net/ipv4/inet_fragment.c

+13 −31
Original line number Diff line number Diff line
@@ -203,7 +203,6 @@ EXPORT_SYMBOL(inet_frag_rbtree_purge); 


void inet_frag_destroy(struct inet_frag_queue *q)

{

	struct sk_buff *fp;

	struct netns_frags *nf;

	unsigned int sum, sum_truesize = 0;

	struct inet_frags *f;
@@ -212,20 +211,9 @@ void inet_frag_destroy(struct inet_frag_queue *q) 
	WARN_ON(del_timer(&q->timer) != 0);



	/* Release all fragment data. */

	fp = q->fragments;

	nf = q->net;

	f = nf->f;

	if (fp) {

		do {

			struct sk_buff *xp = fp->next;



			sum_truesize += fp->truesize;

			kfree_skb(fp);

			fp = xp;

		} while (fp);

	} else {

	sum_truesize = inet_frag_rbtree_purge(&q->rb_fragments);

	}

	sum = sum_truesize + f->qsize;



	call_rcu(&q->rcu, inet_frag_destroy_rcu);
@@ -489,13 +477,7 @@ EXPORT_SYMBOL(inet_frag_reasm_finish); 


struct sk_buff *inet_frag_pull_head(struct inet_frag_queue *q)

{

	struct sk_buff *head;



	if (q->fragments) {

		head = q->fragments;

		q->fragments = head->next;

	} else {

		struct sk_buff *skb;

	struct sk_buff *head, *skb;



	head = skb_rb_first(&q->rb_fragments);

	if (!head)
@@ -508,7 +490,7 @@ struct sk_buff *inet_frag_pull_head(struct inet_frag_queue *q) 
		rb_erase(&head->rbnode, &q->rb_fragments);

	memset(&head->rbnode, 0, sizeof(head->rbnode));

	barrier();

	}



	if (head == q->fragments_tail)

		q->fragments_tail = NULL;

net/ipv4/ip_fragment.c

+0 −2
Original line number Diff line number Diff line
@@ -261,7 +261,6 @@ static int ip_frag_reinit(struct ipq *qp) 
	qp->q.flags = 0;

	qp->q.len = 0;

	qp->q.meat = 0;

	qp->q.fragments = NULL;

	qp->q.rb_fragments = RB_ROOT;

	qp->q.fragments_tail = NULL;

	qp->q.last_run_head = NULL;
@@ -451,7 +450,6 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *skb, 
	ip_send_check(iph);



	__IP_INC_STATS(net, IPSTATS_MIB_REASMOKS);

	qp->q.fragments = NULL;

	qp->q.rb_fragments = RB_ROOT;

	qp->q.fragments_tail = NULL;

	qp->q.last_run_head = NULL;

net/ipv6/netfilter/nf_conntrack_reasm.c

+0 −1
Original line number Diff line number Diff line
@@ -365,7 +365,6 @@ static int nf_ct_frag6_reasm(struct frag_queue *fq, struct sk_buff *skb, 
					 skb_network_header_len(skb),

					 skb->csum);



	fq->q.fragments = NULL;

	fq->q.rb_fragments = RB_ROOT;

	fq->q.fragments_tail = NULL;

	fq->q.last_run_head = NULL;