Commit d970dbf8 authored by Vlad Yasevich's avatar Vlad Yasevich
Browse files

SCTP: Convert custom hash lists to use hlist. 



Convert the custom hash list traversals to use hlist functions.

Signed-off-by: default avatarVlad Yasevich <vladislav.yasevich@hp.com>
parent 123ed979

include/net/sctp/sctp.h

+3 −0
Original line number Diff line number Diff line
@@ -665,6 +665,9 @@ static inline int sctp_vtag_hashfn(__u16 lport, __u16 rport, __u32 vtag) 
	return (h & (sctp_assoc_hashsize-1));

}



#define sctp_for_each_hentry(epb, node, head) \

	hlist_for_each_entry(epb, node, head, node)



/* Is a socket of this style? */

#define sctp_style(sk, style) __sctp_style((sk), (SCTP_SOCKET_##style))

static inline int __sctp_style(const struct sock *sk, sctp_socket_type_t style)

include/net/sctp/structs.h

+4 −6
Original line number Diff line number Diff line
@@ -100,20 +100,19 @@ struct crypto_hash; 
struct sctp_bind_bucket {

	unsigned short	port;

	unsigned short	fastreuse;

	struct sctp_bind_bucket *next;

	struct sctp_bind_bucket **pprev;

	struct hlist_node	node;

	struct hlist_head	owner;

};



struct sctp_bind_hashbucket {

	spinlock_t	lock;

	struct sctp_bind_bucket	*chain;

	struct hlist_head	chain;

};



/* Used for hashing all associations.  */

struct sctp_hashbucket {

	rwlock_t	lock;

	struct sctp_ep_common  *chain;

	struct hlist_head	chain;

} __attribute__((__aligned__(8)));
@@ -1230,8 +1229,7 @@ typedef enum { 


struct sctp_ep_common {

	/* Fields to help us manage our entries in the hash tables. */

	struct sctp_ep_common *next;

	struct sctp_ep_common **pprev;

	struct hlist_node node;

	int hashent;



	/* Runtime type information.  What kind of endpoint is this? */

net/sctp/endpointola.c

+2 −1
Original line number Diff line number Diff line
@@ -332,6 +332,7 @@ static struct sctp_association *__sctp_endpoint_lookup_assoc( 
	struct sctp_transport *t = NULL;

	struct sctp_hashbucket *head;

	struct sctp_ep_common *epb;

	struct hlist_node *node;

	int hash;

	int rport;
@@ -341,7 +342,7 @@ static struct sctp_association *__sctp_endpoint_lookup_assoc( 
	hash = sctp_assoc_hashfn(ep->base.bind_addr.port, rport);

	head = &sctp_assoc_hashtable[hash];

	read_lock(&head->lock);

	for (epb = head->chain; epb; epb = epb->next) {

	sctp_for_each_hentry(epb, node, &head->chain) {

		asoc = sctp_assoc(epb);

		if (asoc->ep != ep || rport != asoc->peer.port)

			goto next;

net/sctp/input.c

+11 −32
Original line number Diff line number Diff line
@@ -656,7 +656,6 @@ discard: 
/* Insert endpoint into the hash table.  */

static void __sctp_hash_endpoint(struct sctp_endpoint *ep)

{

	struct sctp_ep_common **epp;

	struct sctp_ep_common *epb;

	struct sctp_hashbucket *head;
@@ -666,12 +665,7 @@ static void __sctp_hash_endpoint(struct sctp_endpoint *ep) 
	head = &sctp_ep_hashtable[epb->hashent];



	sctp_write_lock(&head->lock);

	epp = &head->chain;

	epb->next = *epp;

	if (epb->next)

		(*epp)->pprev = &epb->next;

	*epp = epb;

	epb->pprev = epp;

	hlist_add_head(&epb->node, &head->chain);

	sctp_write_unlock(&head->lock);

}
@@ -691,19 +685,15 @@ static void __sctp_unhash_endpoint(struct sctp_endpoint *ep) 


	epb = &ep->base;



	if (hlist_unhashed(&epb->node))

		return;



	epb->hashent = sctp_ep_hashfn(epb->bind_addr.port);



	head = &sctp_ep_hashtable[epb->hashent];



	sctp_write_lock(&head->lock);



	if (epb->pprev) {

		if (epb->next)

			epb->next->pprev = epb->pprev;

		*epb->pprev = epb->next;

		epb->pprev = NULL;

	}



	__hlist_del(&epb->node);

	sctp_write_unlock(&head->lock);

}
@@ -721,12 +711,13 @@ static struct sctp_endpoint *__sctp_rcv_lookup_endpoint(const union sctp_addr *l 
	struct sctp_hashbucket *head;

	struct sctp_ep_common *epb;

	struct sctp_endpoint *ep;

	struct hlist_node *node;

	int hash;



	hash = sctp_ep_hashfn(ntohs(laddr->v4.sin_port));

	head = &sctp_ep_hashtable[hash];

	read_lock(&head->lock);

	for (epb = head->chain; epb; epb = epb->next) {

	sctp_for_each_hentry(epb, node, &head->chain) {

		ep = sctp_ep(epb);

		if (sctp_endpoint_is_match(ep, laddr))

			goto hit;
@@ -744,7 +735,6 @@ hit: 
/* Insert association into the hash table.  */

static void __sctp_hash_established(struct sctp_association *asoc)

{

	struct sctp_ep_common **epp;

	struct sctp_ep_common *epb;

	struct sctp_hashbucket *head;
@@ -756,12 +746,7 @@ static void __sctp_hash_established(struct sctp_association *asoc) 
	head = &sctp_assoc_hashtable[epb->hashent];



	sctp_write_lock(&head->lock);

	epp = &head->chain;

	epb->next = *epp;

	if (epb->next)

		(*epp)->pprev = &epb->next;

	*epp = epb;

	epb->pprev = epp;

	hlist_add_head(&epb->node, &head->chain);

	sctp_write_unlock(&head->lock);

}
@@ -790,14 +775,7 @@ static void __sctp_unhash_established(struct sctp_association *asoc) 
	head = &sctp_assoc_hashtable[epb->hashent];



	sctp_write_lock(&head->lock);



	if (epb->pprev) {

		if (epb->next)

			epb->next->pprev = epb->pprev;

		*epb->pprev = epb->next;

		epb->pprev = NULL;

	}



	__hlist_del(&epb->node);

	sctp_write_unlock(&head->lock);

}
@@ -822,6 +800,7 @@ static struct sctp_association *__sctp_lookup_association( 
	struct sctp_ep_common *epb;

	struct sctp_association *asoc;

	struct sctp_transport *transport;

	struct hlist_node *node;

	int hash;



	/* Optimize here for direct hit, only listening connections can
@@ -830,7 +809,7 @@ static struct sctp_association *__sctp_lookup_association( 
	hash = sctp_assoc_hashfn(ntohs(local->v4.sin_port), ntohs(peer->v4.sin_port));

	head = &sctp_assoc_hashtable[hash];

	read_lock(&head->lock);

	for (epb = head->chain; epb; epb = epb->next) {

	sctp_for_each_hentry(epb, node, &head->chain) {

		asoc = sctp_assoc(epb);

		transport = sctp_assoc_is_match(asoc, local, peer);

		if (transport)

net/sctp/proc.c

+4 −2
Original line number Diff line number Diff line
@@ -225,6 +225,7 @@ static int sctp_eps_seq_show(struct seq_file *seq, void *v) 
	struct sctp_ep_common *epb;

	struct sctp_endpoint *ep;

	struct sock *sk;

	struct hlist_node *node;

	int    hash = *(loff_t *)v;



	if (hash >= sctp_ep_hashsize)
@@ -233,7 +234,7 @@ static int sctp_eps_seq_show(struct seq_file *seq, void *v) 
	head = &sctp_ep_hashtable[hash];

	sctp_local_bh_disable();

	read_lock(&head->lock);

	for (epb = head->chain; epb; epb = epb->next) {

	sctp_for_each_hentry(epb, node, &head->chain) {

		ep = sctp_ep(epb);

		sk = epb->sk;

		seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
@@ -328,6 +329,7 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v) 
	struct sctp_ep_common *epb;

	struct sctp_association *assoc;

	struct sock *sk;

	struct hlist_node *node;

	int    hash = *(loff_t *)v;



	if (hash >= sctp_assoc_hashsize)
@@ -336,7 +338,7 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v) 
	head = &sctp_assoc_hashtable[hash];

	sctp_local_bh_disable();

	read_lock(&head->lock);

	for (epb = head->chain; epb; epb = epb->next) {

	sctp_for_each_hentry(epb, node, &head->chain) {

		assoc = sctp_assoc(epb);

		sk = epb->sk;

		seq_printf(seq,

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