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sctp: drop the old assoc hashtable of sctp

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transport hashtable will replace the association hashtable,
so association hashtable is not used in sctp any more, so
drop the codes about that.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long 2015-12-30 23:50:49 +08:00 committed by David S. Miller
parent 39f66a7dce
commit b5eff71283
6 changed files with 3 additions and 122 deletions
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21
include/net/sctp/sctp.h
View File

@ -126,8 +126,6 @@ int sctp_primitive_ASCONF(struct net *, struct sctp_association *, void *arg);
*/
int sctp_rcv(struct sk_buff *skb);
void sctp_v4_err(struct sk_buff *skb, u32 info);
void sctp_hash_established(struct sctp_association *);
void sctp_unhash_established(struct sctp_association *);
void sctp_hash_endpoint(struct sctp_endpoint *);
void sctp_unhash_endpoint(struct sctp_endpoint *);
struct sock *sctp_err_lookup(struct net *net, int family, struct sk_buff *,
@ -530,25 +528,6 @@ static inline int sctp_ep_hashfn(struct net *net, __u16 lport)
return (net_hash_mix(net) + lport) & (sctp_ep_hashsize - 1);
}
/* This is the hash function for the association hash table. */
static inline int sctp_assoc_hashfn(struct net *net, __u16 lport, __u16 rport)
{
int h = (lport << 16) + rport + net_hash_mix(net);
h ^= h>>8;
return h & (sctp_assoc_hashsize - 1);
}
/* This is the hash function for the association hash table. This is
* not used yet, but could be used as a better hash function when
* we have a vtag.
*/
static inline int sctp_vtag_hashfn(__u16 lport, __u16 rport, __u32 vtag)
{
int h = (lport << 16) + rport;
h ^= vtag;
return h & (sctp_assoc_hashsize - 1);
}
#define sctp_for_each_hentry(epb, head) \
hlist_for_each_entry(epb, head, node)

5
include/net/sctp/structs.h
View File

@ -120,8 +120,6 @@ extern struct sctp_globals {
/* This is the hash of all endpoints. */
struct sctp_hashbucket *ep_hashtable;
/* This is the hash of all associations. */
struct sctp_hashbucket *assoc_hashtable;
/* This is the sctp port control hash. */
struct sctp_bind_hashbucket *port_hashtable;
/* This is the hash of all transports. */
@ -129,7 +127,6 @@ extern struct sctp_globals {
/* Sizes of above hashtables. */
int ep_hashsize;
int assoc_hashsize;
int port_hashsize;
/* Default initialization values to be applied to new associations. */
@ -146,8 +143,6 @@ extern struct sctp_globals {
#define sctp_address_families (sctp_globals.address_families)
#define sctp_ep_hashsize (sctp_globals.ep_hashsize)
#define sctp_ep_hashtable (sctp_globals.ep_hashtable)
#define sctp_assoc_hashsize (sctp_globals.assoc_hashsize)
#define sctp_assoc_hashtable (sctp_globals.assoc_hashtable)
#define sctp_port_hashsize (sctp_globals.port_hashsize)
#define sctp_port_hashtable (sctp_globals.port_hashtable)
#define sctp_transport_hashtable (sctp_globals.transport_hashtable)

61
net/sctp/input.c
View File

@ -913,67 +913,6 @@ struct sctp_transport *sctp_epaddr_lookup_transport(
return sctp_addrs_lookup_transport(net, &addr->a, paddr);
}
/* Insert association into the hash table. */
static void __sctp_hash_established(struct sctp_association *asoc)
{
struct net *net = sock_net(asoc->base.sk);
struct sctp_ep_common *epb;
struct sctp_hashbucket *head;
epb = &asoc->base;
/* Calculate which chain this entry will belong to. */
epb->hashent = sctp_assoc_hashfn(net, epb->bind_addr.port,
asoc->peer.port);
head = &sctp_assoc_hashtable[epb->hashent];
write_lock(&head->lock);
hlist_add_head(&epb->node, &head->chain);
write_unlock(&head->lock);
}
/* Add an association to the hash. Local BH-safe. */
void sctp_hash_established(struct sctp_association *asoc)
{
if (asoc->temp)
return;
local_bh_disable();
__sctp_hash_established(asoc);
local_bh_enable();
}
/* Remove association from the hash table. */
static void __sctp_unhash_established(struct sctp_association *asoc)
{
struct net *net = sock_net(asoc->base.sk);
struct sctp_hashbucket *head;
struct sctp_ep_common *epb;
epb = &asoc->base;
epb->hashent = sctp_assoc_hashfn(net, epb->bind_addr.port,
asoc->peer.port);
head = &sctp_assoc_hashtable[epb->hashent];
write_lock(&head->lock);
hlist_del_init(&epb->node);
write_unlock(&head->lock);
}
/* Remove association from the hash table. Local BH-safe. */
void sctp_unhash_established(struct sctp_association *asoc)
{
if (asoc->temp)
return;
local_bh_disable();
__sctp_unhash_established(asoc);
local_bh_enable();
}
/* Look up an association. */
static struct sctp_association *__sctp_lookup_association(
struct net *net,

30
net/sctp/protocol.c
View File

@ -1416,24 +1416,6 @@ static __init int sctp_init(void)
for (order = 0; (1UL << order) < goal; order++)
;
do {
sctp_assoc_hashsize = (1UL << order) * PAGE_SIZE /
sizeof(struct sctp_hashbucket);
if ((sctp_assoc_hashsize > (64 * 1024)) && order > 0)
continue;
sctp_assoc_hashtable = (struct sctp_hashbucket *)
__get_free_pages(GFP_KERNEL | __GFP_NOWARN, order);
} while (!sctp_assoc_hashtable && --order > 0);
if (!sctp_assoc_hashtable) {
pr_err("Failed association hash alloc\n");
status = -ENOMEM;
goto err_ahash_alloc;
}
for (i = 0; i < sctp_assoc_hashsize; i++) {
rwlock_init(&sctp_assoc_hashtable[i].lock);
INIT_HLIST_HEAD(&sctp_assoc_hashtable[i].chain);
}
/* Allocate and initialize the endpoint hash table. */
sctp_ep_hashsize = 64;
sctp_ep_hashtable =
@ -1470,8 +1452,7 @@ static __init int sctp_init(void)
if (sctp_transport_hashtable_init())
goto err_thash_alloc;
pr_info("Hash tables configured (established %d bind %d)\n",
sctp_assoc_hashsize, sctp_port_hashsize);
pr_info("Hash tables configured (bind %d)\n", sctp_port_hashsize);
sctp_sysctl_register();
@ -1528,10 +1509,6 @@ err_bhash_alloc:
err_thash_alloc:
kfree(sctp_ep_hashtable);
err_ehash_alloc:
free_pages((unsigned long)sctp_assoc_hashtable,
get_order(sctp_assoc_hashsize *
sizeof(struct sctp_hashbucket)));
err_ahash_alloc:
percpu_counter_destroy(&sctp_sockets_allocated);
err_percpu_counter_init:
kmem_cache_destroy(sctp_chunk_cachep);
@ -1565,13 +1542,10 @@ static __exit void sctp_exit(void)
sctp_sysctl_unregister();
free_pages((unsigned long)sctp_assoc_hashtable,
get_order(sctp_assoc_hashsize *
sizeof(struct sctp_hashbucket)));
kfree(sctp_ep_hashtable);
free_pages((unsigned long)sctp_port_hashtable,
get_order(sctp_port_hashsize *
sizeof(struct sctp_bind_hashbucket)));
kfree(sctp_ep_hashtable);
sctp_transport_hashtable_destroy();
percpu_counter_destroy(&sctp_sockets_allocated);

2
net/sctp/sm_sideeffect.c
View File

@ -866,7 +866,6 @@ static void sctp_cmd_delete_tcb(sctp_cmd_seq_t *cmds,
(!asoc->temp) && (sk->sk_shutdown != SHUTDOWN_MASK))
return;
sctp_unhash_established(asoc);
sctp_association_free(asoc);
}
@ -1269,7 +1268,6 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
asoc = cmd->obj.asoc;
BUG_ON(asoc->peer.primary_path == NULL);
sctp_endpoint_add_asoc(ep, asoc);
sctp_hash_established(asoc);
break;
case SCTP_CMD_UPDATE_ASSOC:

6
net/sctp/socket.c
View File

@ -1228,7 +1228,6 @@ out_free:
* To the hash table, try to unhash it, just in case, its a noop
* if it wasn't hashed so we're safe
*/
sctp_unhash_established(asoc);
sctp_association_free(asoc);
}
return err;
@ -1504,7 +1503,6 @@ static void sctp_close(struct sock *sk, long timeout)
* ABORT or SHUTDOWN based on the linger options.
*/
if (sctp_state(asoc, CLOSED)) {
sctp_unhash_established(asoc);
sctp_association_free(asoc);
continue;
}
@ -1986,10 +1984,8 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
goto out_unlock;
out_free:
if (new_asoc) {
sctp_unhash_established(asoc);
if (new_asoc)
sctp_association_free(asoc);
}
out_unlock:
release_sock(sk);