rxrpc: Split service connection code out into its own file
Split the service-specific connection code out into into its own file. The client-specific code has already been split out. This will leave just the common code in the original file. Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
Родитель
c6d2b8d764
Коммит
7877a4a4bd
|
|
@ -10,6 +10,7 @@ af-rxrpc-y := \
|
|||
conn_client.o \
|
||||
conn_event.o \
|
||||
conn_object.o \
|
||||
conn_service.o \
|
||||
input.o \
|
||||
insecure.o \
|
||||
key.o \
|
||||
|
|
|
|||
|
|
@ -563,6 +563,9 @@ extern unsigned int rxrpc_connection_expiry;
|
|||
extern struct list_head rxrpc_connections;
|
||||
extern rwlock_t rxrpc_connection_lock;
|
||||
|
||||
void rxrpc_conn_hash_proto_key(struct rxrpc_conn_proto *);
|
||||
void rxrpc_extract_conn_params(struct rxrpc_conn_proto *,
|
||||
struct rxrpc_local *, struct sk_buff *);
|
||||
struct rxrpc_connection *rxrpc_alloc_connection(gfp_t);
|
||||
struct rxrpc_connection *rxrpc_find_connection(struct rxrpc_local *,
|
||||
struct rxrpc_peer *,
|
||||
|
|
@ -571,9 +574,6 @@ void __rxrpc_disconnect_call(struct rxrpc_call *);
|
|||
void rxrpc_disconnect_call(struct rxrpc_call *);
|
||||
void rxrpc_put_connection(struct rxrpc_connection *);
|
||||
void __exit rxrpc_destroy_all_connections(void);
|
||||
struct rxrpc_connection *rxrpc_incoming_connection(struct rxrpc_local *,
|
||||
struct rxrpc_peer *,
|
||||
struct sk_buff *);
|
||||
|
||||
static inline bool rxrpc_conn_is_client(const struct rxrpc_connection *conn)
|
||||
{
|
||||
|
|
@ -603,6 +603,13 @@ static inline void rxrpc_queue_conn(struct rxrpc_connection *conn)
|
|||
rxrpc_put_connection(conn);
|
||||
}
|
||||
|
||||
/*
|
||||
* conn_service.c
|
||||
*/
|
||||
struct rxrpc_connection *rxrpc_incoming_connection(struct rxrpc_local *,
|
||||
struct rxrpc_peer *,
|
||||
struct sk_buff *);
|
||||
|
||||
/*
|
||||
* input.c
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -60,138 +60,6 @@ struct rxrpc_connection *rxrpc_alloc_connection(gfp_t gfp)
|
|||
return conn;
|
||||
}
|
||||
|
||||
/*
|
||||
* get a record of an incoming connection
|
||||
*/
|
||||
struct rxrpc_connection *rxrpc_incoming_connection(struct rxrpc_local *local,
|
||||
struct rxrpc_peer *peer,
|
||||
struct sk_buff *skb)
|
||||
{
|
||||
struct rxrpc_connection *conn, *candidate = NULL;
|
||||
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
|
||||
struct rb_node *p, **pp;
|
||||
const char *new = "old";
|
||||
u32 epoch, cid;
|
||||
|
||||
_enter("");
|
||||
|
||||
ASSERT(sp->hdr.flags & RXRPC_CLIENT_INITIATED);
|
||||
|
||||
epoch = sp->hdr.epoch;
|
||||
cid = sp->hdr.cid & RXRPC_CIDMASK;
|
||||
|
||||
/* search the connection list first */
|
||||
read_lock_bh(&peer->conn_lock);
|
||||
|
||||
p = peer->service_conns.rb_node;
|
||||
while (p) {
|
||||
conn = rb_entry(p, struct rxrpc_connection, service_node);
|
||||
|
||||
_debug("maybe %x", conn->proto.cid);
|
||||
|
||||
if (epoch < conn->proto.epoch)
|
||||
p = p->rb_left;
|
||||
else if (epoch > conn->proto.epoch)
|
||||
p = p->rb_right;
|
||||
else if (cid < conn->proto.cid)
|
||||
p = p->rb_left;
|
||||
else if (cid > conn->proto.cid)
|
||||
p = p->rb_right;
|
||||
else
|
||||
goto found_extant_connection;
|
||||
}
|
||||
read_unlock_bh(&peer->conn_lock);
|
||||
|
||||
/* not yet present - create a candidate for a new record and then
|
||||
* redo the search */
|
||||
candidate = rxrpc_alloc_connection(GFP_NOIO);
|
||||
if (!candidate) {
|
||||
_leave(" = -ENOMEM");
|
||||
return ERR_PTR(-ENOMEM);
|
||||
}
|
||||
|
||||
candidate->proto.local = local;
|
||||
candidate->proto.epoch = sp->hdr.epoch;
|
||||
candidate->proto.cid = sp->hdr.cid & RXRPC_CIDMASK;
|
||||
candidate->proto.in_clientflag = RXRPC_CLIENT_INITIATED;
|
||||
candidate->params.local = local;
|
||||
candidate->params.peer = peer;
|
||||
candidate->params.service_id = sp->hdr.serviceId;
|
||||
candidate->security_ix = sp->hdr.securityIndex;
|
||||
candidate->out_clientflag = 0;
|
||||
candidate->state = RXRPC_CONN_SERVICE;
|
||||
if (candidate->params.service_id)
|
||||
candidate->state = RXRPC_CONN_SERVICE_UNSECURED;
|
||||
|
||||
write_lock_bh(&peer->conn_lock);
|
||||
|
||||
pp = &peer->service_conns.rb_node;
|
||||
p = NULL;
|
||||
while (*pp) {
|
||||
p = *pp;
|
||||
conn = rb_entry(p, struct rxrpc_connection, service_node);
|
||||
|
||||
if (epoch < conn->proto.epoch)
|
||||
pp = &(*pp)->rb_left;
|
||||
else if (epoch > conn->proto.epoch)
|
||||
pp = &(*pp)->rb_right;
|
||||
else if (cid < conn->proto.cid)
|
||||
pp = &(*pp)->rb_left;
|
||||
else if (cid > conn->proto.cid)
|
||||
pp = &(*pp)->rb_right;
|
||||
else
|
||||
goto found_extant_second;
|
||||
}
|
||||
|
||||
/* we can now add the new candidate to the list */
|
||||
conn = candidate;
|
||||
candidate = NULL;
|
||||
rb_link_node(&conn->service_node, p, pp);
|
||||
rb_insert_color(&conn->service_node, &peer->service_conns);
|
||||
rxrpc_get_peer(peer);
|
||||
rxrpc_get_local(local);
|
||||
|
||||
write_unlock_bh(&peer->conn_lock);
|
||||
|
||||
write_lock(&rxrpc_connection_lock);
|
||||
list_add_tail(&conn->link, &rxrpc_connections);
|
||||
write_unlock(&rxrpc_connection_lock);
|
||||
|
||||
new = "new";
|
||||
|
||||
success:
|
||||
_net("CONNECTION %s %d {%x}", new, conn->debug_id, conn->proto.cid);
|
||||
|
||||
_leave(" = %p {u=%d}", conn, atomic_read(&conn->usage));
|
||||
return conn;
|
||||
|
||||
/* we found the connection in the list immediately */
|
||||
found_extant_connection:
|
||||
if (sp->hdr.securityIndex != conn->security_ix) {
|
||||
read_unlock_bh(&peer->conn_lock);
|
||||
goto security_mismatch;
|
||||
}
|
||||
rxrpc_get_connection(conn);
|
||||
read_unlock_bh(&peer->conn_lock);
|
||||
goto success;
|
||||
|
||||
/* we found the connection on the second time through the list */
|
||||
found_extant_second:
|
||||
if (sp->hdr.securityIndex != conn->security_ix) {
|
||||
write_unlock_bh(&peer->conn_lock);
|
||||
goto security_mismatch;
|
||||
}
|
||||
rxrpc_get_connection(conn);
|
||||
write_unlock_bh(&peer->conn_lock);
|
||||
kfree(candidate);
|
||||
goto success;
|
||||
|
||||
security_mismatch:
|
||||
kfree(candidate);
|
||||
_leave(" = -EKEYREJECTED");
|
||||
return ERR_PTR(-EKEYREJECTED);
|
||||
}
|
||||
|
||||
/*
|
||||
* find a connection based on transport and RxRPC connection ID for an incoming
|
||||
* packet
|
||||
|
|
|
|||
|
|
@ -0,0 +1,145 @@
|
|||
/* Service connection management
|
||||
*
|
||||
* Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
|
||||
* Written by David Howells (dhowells@redhat.com)
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public Licence
|
||||
* as published by the Free Software Foundation; either version
|
||||
* 2 of the Licence, or (at your option) any later version.
|
||||
*/
|
||||
|
||||
#include <linux/slab.h>
|
||||
#include "ar-internal.h"
|
||||
|
||||
/*
|
||||
* get a record of an incoming connection
|
||||
*/
|
||||
struct rxrpc_connection *rxrpc_incoming_connection(struct rxrpc_local *local,
|
||||
struct rxrpc_peer *peer,
|
||||
struct sk_buff *skb)
|
||||
{
|
||||
struct rxrpc_connection *conn, *candidate = NULL;
|
||||
struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
|
||||
struct rb_node *p, **pp;
|
||||
const char *new = "old";
|
||||
u32 epoch, cid;
|
||||
|
||||
_enter("");
|
||||
|
||||
ASSERT(sp->hdr.flags & RXRPC_CLIENT_INITIATED);
|
||||
|
||||
epoch = sp->hdr.epoch;
|
||||
cid = sp->hdr.cid & RXRPC_CIDMASK;
|
||||
|
||||
/* search the connection list first */
|
||||
read_lock_bh(&peer->conn_lock);
|
||||
|
||||
p = peer->service_conns.rb_node;
|
||||
while (p) {
|
||||
conn = rb_entry(p, struct rxrpc_connection, service_node);
|
||||
|
||||
_debug("maybe %x", conn->proto.cid);
|
||||
|
||||
if (epoch < conn->proto.epoch)
|
||||
p = p->rb_left;
|
||||
else if (epoch > conn->proto.epoch)
|
||||
p = p->rb_right;
|
||||
else if (cid < conn->proto.cid)
|
||||
p = p->rb_left;
|
||||
else if (cid > conn->proto.cid)
|
||||
p = p->rb_right;
|
||||
else
|
||||
goto found_extant_connection;
|
||||
}
|
||||
read_unlock_bh(&peer->conn_lock);
|
||||
|
||||
/* not yet present - create a candidate for a new record and then
|
||||
* redo the search */
|
||||
candidate = rxrpc_alloc_connection(GFP_NOIO);
|
||||
if (!candidate) {
|
||||
_leave(" = -ENOMEM");
|
||||
return ERR_PTR(-ENOMEM);
|
||||
}
|
||||
|
||||
candidate->proto.local = local;
|
||||
candidate->proto.epoch = sp->hdr.epoch;
|
||||
candidate->proto.cid = sp->hdr.cid & RXRPC_CIDMASK;
|
||||
candidate->proto.in_clientflag = RXRPC_CLIENT_INITIATED;
|
||||
candidate->params.local = local;
|
||||
candidate->params.peer = peer;
|
||||
candidate->params.service_id = sp->hdr.serviceId;
|
||||
candidate->security_ix = sp->hdr.securityIndex;
|
||||
candidate->out_clientflag = 0;
|
||||
candidate->state = RXRPC_CONN_SERVICE;
|
||||
if (candidate->params.service_id)
|
||||
candidate->state = RXRPC_CONN_SERVICE_UNSECURED;
|
||||
|
||||
write_lock_bh(&peer->conn_lock);
|
||||
|
||||
pp = &peer->service_conns.rb_node;
|
||||
p = NULL;
|
||||
while (*pp) {
|
||||
p = *pp;
|
||||
conn = rb_entry(p, struct rxrpc_connection, service_node);
|
||||
|
||||
if (epoch < conn->proto.epoch)
|
||||
pp = &(*pp)->rb_left;
|
||||
else if (epoch > conn->proto.epoch)
|
||||
pp = &(*pp)->rb_right;
|
||||
else if (cid < conn->proto.cid)
|
||||
pp = &(*pp)->rb_left;
|
||||
else if (cid > conn->proto.cid)
|
||||
pp = &(*pp)->rb_right;
|
||||
else
|
||||
goto found_extant_second;
|
||||
}
|
||||
|
||||
/* we can now add the new candidate to the list */
|
||||
conn = candidate;
|
||||
candidate = NULL;
|
||||
rb_link_node(&conn->service_node, p, pp);
|
||||
rb_insert_color(&conn->service_node, &peer->service_conns);
|
||||
rxrpc_get_peer(peer);
|
||||
rxrpc_get_local(local);
|
||||
|
||||
write_unlock_bh(&peer->conn_lock);
|
||||
|
||||
write_lock(&rxrpc_connection_lock);
|
||||
list_add_tail(&conn->link, &rxrpc_connections);
|
||||
write_unlock(&rxrpc_connection_lock);
|
||||
|
||||
new = "new";
|
||||
|
||||
success:
|
||||
_net("CONNECTION %s %d {%x}", new, conn->debug_id, conn->proto.cid);
|
||||
|
||||
_leave(" = %p {u=%d}", conn, atomic_read(&conn->usage));
|
||||
return conn;
|
||||
|
||||
/* we found the connection in the list immediately */
|
||||
found_extant_connection:
|
||||
if (sp->hdr.securityIndex != conn->security_ix) {
|
||||
read_unlock_bh(&peer->conn_lock);
|
||||
goto security_mismatch;
|
||||
}
|
||||
rxrpc_get_connection(conn);
|
||||
read_unlock_bh(&peer->conn_lock);
|
||||
goto success;
|
||||
|
||||
/* we found the connection on the second time through the list */
|
||||
found_extant_second:
|
||||
if (sp->hdr.securityIndex != conn->security_ix) {
|
||||
write_unlock_bh(&peer->conn_lock);
|
||||
goto security_mismatch;
|
||||
}
|
||||
rxrpc_get_connection(conn);
|
||||
write_unlock_bh(&peer->conn_lock);
|
||||
kfree(candidate);
|
||||
goto success;
|
||||
|
||||
security_mismatch:
|
||||
kfree(candidate);
|
||||
_leave(" = -EKEYREJECTED");
|
||||
return ERR_PTR(-EKEYREJECTED);
|
||||
}
|
||||
Загрузка…
Ссылка в новой задаче