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Merge branch 'tipc' 

Jon Maloy says:

====================
tipc: simplifications in socket and port layer

After the removal of the tipc native API the relation between
tipc_port and its API types is strictly one-to-one, i.e, the latter
can now only be a socket API. This change opens up for
simplifications both in the code, data and locking structure.

We start with this series, where we ensure that port and socket
structures are co-allocated. Note that the first commit in the
series is unrelated to the above.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2014-03-12 15:53:54 -04:00
parent 4a93f5095a 5c311421a2
commit 36f6fdb749
7 changed files with 314 additions and 350 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/tipc/link.c
View File

@ -327,8 +327,6 @@ static int link_schedule_port(struct tipc_link *l_ptr, u32 origport, u32 sz)
spin_lock_bh(&tipc_port_list_lock);
p_ptr = tipc_port_lock(origport);
if (p_ptr) {
if (!p_ptr->wakeup)
goto exit;
if (!list_empty(&p_ptr->wait_list))
goto exit;
p_ptr->congested = 1;
@ -363,7 +361,7 @@ void tipc_link_wakeup_ports(struct tipc_link *l_ptr, int all)
list_del_init(&p_ptr->wait_list);
spin_lock_bh(p_ptr->lock);
p_ptr->congested = 0;
p_ptr->wakeup(p_ptr);
tipc_port_wakeup(p_ptr);
win -= p_ptr->waiting_pkts;
spin_unlock_bh(p_ptr->lock);
}

212
net/tipc/port.c
View File

@ -1,7 +1,7 @@
/*
* net/tipc/port.c: TIPC port code
*
* Copyright (c) 1992-2007, Ericsson AB
* Copyright (c) 1992-2007, 2014, Ericsson AB
* Copyright (c) 2004-2008, 2010-2013, Wind River Systems
* All rights reserved.
*
@ -38,6 +38,7 @@
#include "config.h"
#include "port.h"
#include "name_table.h"
#include "socket.h"
/* Connection management: */
#define PROBING_INTERVAL 3600000 /* [ms] => 1 h */
@ -54,17 +55,6 @@ static struct sk_buff *port_build_self_abort_msg(struct tipc_port *, u32 err);
static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *, u32 err);
static void port_timeout(unsigned long ref);
static u32 port_peernode(struct tipc_port *p_ptr)
{
return msg_destnode(&p_ptr->phdr);
}
static u32 port_peerport(struct tipc_port *p_ptr)
{
return msg_destport(&p_ptr->phdr);
}
/**
* tipc_port_peer_msg - verify message was sent by connected port's peer
*
@ -76,11 +66,11 @@ int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg)
u32 peernode;
u32 orignode;
if (msg_origport(msg) != port_peerport(p_ptr))
if (msg_origport(msg) != tipc_port_peerport(p_ptr))
return 0;
orignode = msg_orignode(msg);
peernode = port_peernode(p_ptr);
peernode = tipc_port_peernode(p_ptr);
return (orignode == peernode) ||
(!orignode && (peernode == tipc_own_addr)) ||
(!peernode && (orignode == tipc_own_addr));
@ -90,20 +80,18 @@ int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg)
* tipc_port_mcast_xmit - send a multicast message to local and remote
* destinations
*/
int tipc_port_mcast_xmit(u32 ref, struct tipc_name_seq const *seq,
struct iovec const *msg_sect, unsigned int len)
int tipc_port_mcast_xmit(struct tipc_port *oport,
struct tipc_name_seq const *seq,
struct iovec const *msg_sect,
unsigned int len)
{
struct tipc_msg *hdr;
struct sk_buff *buf;
struct sk_buff *ibuf = NULL;
struct tipc_port_list dports = {0, NULL, };
struct tipc_port *oport = tipc_port_deref(ref);
int ext_targets;
int res;
if (unlikely(!oport))
return -EINVAL;
/* Create multicast message */
hdr = &oport->phdr;
msg_set_type(hdr, TIPC_MCAST_MSG);
@ -200,40 +188,32 @@ exit:
tipc_port_list_free(dp);
}
/**
* tipc_createport - create a generic TIPC port
*
* Returns pointer to (locked) TIPC port, or NULL if unable to create it
*/
struct tipc_port *tipc_createport(struct sock *sk,
u32 (*dispatcher)(struct tipc_port *,
struct sk_buff *),
void (*wakeup)(struct tipc_port *),
const u32 importance)
void tipc_port_wakeup(struct tipc_port *port)
{
tipc_sock_wakeup(tipc_port_to_sock(port));
}
/* tipc_port_init - intiate TIPC port and lock it
*
* Returns obtained reference if initialization is successful, zero otherwise
*/
u32 tipc_port_init(struct tipc_port *p_ptr,
const unsigned int importance)
{
struct tipc_port *p_ptr;
struct tipc_msg *msg;
u32 ref;
p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC);
if (!p_ptr) {
pr_warn("Port creation failed, no memory\n");
return NULL;
}
ref = tipc_ref_acquire(p_ptr, &p_ptr->lock);
if (!ref) {
pr_warn("Port creation failed, ref. table exhausted\n");
kfree(p_ptr);
return NULL;
pr_warn("Port registration failed, ref. table exhausted\n");
return 0;
}
p_ptr->sk = sk;
p_ptr->max_pkt = MAX_PKT_DEFAULT;
p_ptr->ref = ref;
INIT_LIST_HEAD(&p_ptr->wait_list);
INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list);
p_ptr->dispatcher = dispatcher;
p_ptr->wakeup = wakeup;
k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref);
INIT_LIST_HEAD(&p_ptr->publications);
INIT_LIST_HEAD(&p_ptr->port_list);
@ -249,10 +229,10 @@ struct tipc_port *tipc_createport(struct sock *sk,
msg_set_origport(msg, ref);
list_add_tail(&p_ptr->port_list, &ports);
spin_unlock_bh(&tipc_port_list_lock);
return p_ptr;
return ref;
}
int tipc_deleteport(struct tipc_port *p_ptr)
void tipc_port_destroy(struct tipc_port *p_ptr)
{
struct sk_buff *buf = NULL;
@ -273,67 +253,7 @@ int tipc_deleteport(struct tipc_port *p_ptr)
list_del(&p_ptr->wait_list);
spin_unlock_bh(&tipc_port_list_lock);
k_term_timer(&p_ptr->timer);
kfree(p_ptr);
tipc_net_route_msg(buf);
return 0;
}
static int port_unreliable(struct tipc_port *p_ptr)
{
return msg_src_droppable(&p_ptr->phdr);
}
int tipc_portunreliable(u32 ref, unsigned int *isunreliable)
{
struct tipc_port *p_ptr;
p_ptr = tipc_port_lock(ref);
if (!p_ptr)
return -EINVAL;
*isunreliable = port_unreliable(p_ptr);
tipc_port_unlock(p_ptr);
return 0;
}
int tipc_set_portunreliable(u32 ref, unsigned int isunreliable)
{
struct tipc_port *p_ptr;
p_ptr = tipc_port_lock(ref);
if (!p_ptr)
return -EINVAL;
msg_set_src_droppable(&p_ptr->phdr, (isunreliable != 0));
tipc_port_unlock(p_ptr);
return 0;
}
static int port_unreturnable(struct tipc_port *p_ptr)
{
return msg_dest_droppable(&p_ptr->phdr);
}
int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable)
{
struct tipc_port *p_ptr;
p_ptr = tipc_port_lock(ref);
if (!p_ptr)
return -EINVAL;
*isunrejectable = port_unreturnable(p_ptr);
tipc_port_unlock(p_ptr);
return 0;
}
int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable)
{
struct tipc_port *p_ptr;
p_ptr = tipc_port_lock(ref);
if (!p_ptr)
return -EINVAL;
msg_set_dest_droppable(&p_ptr->phdr, (isunrejectable != 0));
tipc_port_unlock(p_ptr);
return 0;
}
/*
@ -351,8 +271,8 @@ static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr,
if (buf) {
msg = buf_msg(buf);
tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE,
port_peernode(p_ptr));
msg_set_destport(msg, port_peerport(p_ptr));
tipc_port_peernode(p_ptr));
msg_set_destport(msg, tipc_port_peerport(p_ptr));
msg_set_origport(msg, p_ptr->ref);
msg_set_msgcnt(msg, ack);
}
@ -548,13 +468,12 @@ void tipc_port_proto_rcv(struct sk_buff *buf)
/* Process protocol message sent by peer */
switch (msg_type(msg)) {
case CONN_ACK:
wakeable = tipc_port_congested(p_ptr) && p_ptr->congested &&
p_ptr->wakeup;
wakeable = tipc_port_congested(p_ptr) && p_ptr->congested;
p_ptr->acked += msg_msgcnt(msg);
if (!tipc_port_congested(p_ptr)) {
p_ptr->congested = 0;
if (wakeable)
p_ptr->wakeup(p_ptr);
tipc_port_wakeup(p_ptr);
}
break;
case CONN_PROBE:
@ -585,8 +504,8 @@ static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id)
ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref);
if (p_ptr->connected) {
u32 dport = port_peerport(p_ptr);
u32 destnode = port_peernode(p_ptr);
u32 dport = tipc_port_peerport(p_ptr);
u32 destnode = tipc_port_peernode(p_ptr);
ret += tipc_snprintf(buf + ret, len - ret,
" connected to <%u.%u.%u:%u>",
@ -674,34 +593,6 @@ void tipc_acknowledge(u32 ref, u32 ack)
tipc_net_route_msg(buf);
}
int tipc_portimportance(u32 ref, unsigned int *importance)
{
struct tipc_port *p_ptr;
p_ptr = tipc_port_lock(ref);
if (!p_ptr)
return -EINVAL;
*importance = (unsigned int)msg_importance(&p_ptr->phdr);
tipc_port_unlock(p_ptr);
return 0;
}
int tipc_set_portimportance(u32 ref, unsigned int imp)
{
struct tipc_port *p_ptr;
if (imp > TIPC_CRITICAL_IMPORTANCE)
return -EINVAL;
p_ptr = tipc_port_lock(ref);
if (!p_ptr)
return -EINVAL;
msg_set_importance(&p_ptr->phdr, (u32)imp);
tipc_port_unlock(p_ptr);
return 0;
}
int tipc_publish(struct tipc_port *p_ptr, unsigned int scope,
struct tipc_name_seq const *seq)
{
@ -883,7 +774,7 @@ int tipc_port_rcv(struct sk_buff *buf)
/* validate destination & pass to port, otherwise reject message */
p_ptr = tipc_port_lock(destport);
if (likely(p_ptr)) {
err = p_ptr->dispatcher(p_ptr, buf);
err = tipc_sk_rcv(&tipc_port_to_sock(p_ptr)->sk, buf);
tipc_port_unlock(p_ptr);
if (likely(!err))
return dsz;
@ -914,19 +805,19 @@ static int tipc_port_iovec_rcv(struct tipc_port *sender,
/**
* tipc_send - send message sections on connection
*/
int tipc_send(u32 ref, struct iovec const *msg_sect, unsigned int len)
int tipc_send(struct tipc_port *p_ptr,
struct iovec const *msg_sect,
unsigned int len)
{
struct tipc_port *p_ptr;
u32 destnode;
int res;
p_ptr = tipc_port_deref(ref);
if (!p_ptr || !p_ptr->connected)
if (!p_ptr->connected)
return -EINVAL;
p_ptr->congested = 1;
if (!tipc_port_congested(p_ptr)) {
destnode = port_peernode(p_ptr);
destnode = tipc_port_peernode(p_ptr);
if (likely(!in_own_node(destnode)))
res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len,
destnode);
@ -940,7 +831,7 @@ int tipc_send(u32 ref, struct iovec const *msg_sect, unsigned int len)
return res;
}
}
if (port_unreliable(p_ptr)) {
if (tipc_port_unreliable(p_ptr)) {
p_ptr->congested = 0;
return len;
}
@ -950,17 +841,18 @@ int tipc_send(u32 ref, struct iovec const *msg_sect, unsigned int len)
/**
* tipc_send2name - send message sections to port name
*/
int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain,
struct iovec const *msg_sect, unsigned int len)
int tipc_send2name(struct tipc_port *p_ptr,
struct tipc_name const *name,
unsigned int domain,
struct iovec const *msg_sect,
unsigned int len)
{
struct tipc_port *p_ptr;
struct tipc_msg *msg;
u32 destnode = domain;
u32 destport;
int res;
p_ptr = tipc_port_deref(ref);
if (!p_ptr || p_ptr->connected)
if (p_ptr->connected)
return -EINVAL;
msg = &p_ptr->phdr;
@ -987,9 +879,9 @@ int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain,
p_ptr->sent++;
return res;
}
if (port_unreliable(p_ptr)) {
if (tipc_port_unreliable(p_ptr))
return len;
}
return -ELINKCONG;
}
return tipc_port_iovec_reject(p_ptr, msg, msg_sect, len,
@ -999,15 +891,15 @@ int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain,
/**
* tipc_send2port - send message sections to port identity
*/
int tipc_send2port(u32 ref, struct tipc_portid const *dest,
struct iovec const *msg_sect, unsigned int len)
int tipc_send2port(struct tipc_port *p_ptr,
struct tipc_portid const *dest,
struct iovec const *msg_sect,
unsigned int len)
{
struct tipc_port *p_ptr;
struct tipc_msg *msg;
int res;
p_ptr = tipc_port_deref(ref);
if (!p_ptr || p_ptr->connected)
if (p_ptr->connected)
return -EINVAL;
msg = &p_ptr->phdr;
@ -1030,8 +922,8 @@ int tipc_send2port(u32 ref, struct tipc_portid const *dest,
p_ptr->sent++;
return res;
}
if (port_unreliable(p_ptr)) {
if (tipc_port_unreliable(p_ptr))
return len;
}
return -ELINKCONG;
}

108
net/tipc/port.h
View File

@ -1,7 +1,7 @@
/*
* net/tipc/port.h: Include file for TIPC port code
*
* Copyright (c) 1994-2007, Ericsson AB
* Copyright (c) 1994-2007, 2014, Ericsson AB
* Copyright (c) 2004-2007, 2010-2013, Wind River Systems
* All rights reserved.
*
@ -48,7 +48,6 @@
/**
* struct tipc_port - TIPC port structure
* @sk: pointer to socket handle
* @lock: pointer to spinlock for controlling access to port
* @connected: non-zero if port is currently connected to a peer port
* @conn_type: TIPC type used when connection was established
@ -60,8 +59,6 @@
* @ref: unique reference to port in TIPC object registry
* @phdr: preformatted message header used when sending messages
* @port_list: adjacent ports in TIPC's global list of ports
* @dispatcher: ptr to routine which handles received messages
* @wakeup: ptr to routine to call when port is no longer congested
* @wait_list: adjacent ports in list of ports waiting on link congestion
* @waiting_pkts:
* @sent: # of non-empty messages sent by port
@ -74,7 +71,6 @@
* @subscription: "node down" subscription used to terminate failed connections
*/
struct tipc_port {
struct sock *sk;
spinlock_t *lock;
int connected;
u32 conn_type;
@ -86,8 +82,6 @@ struct tipc_port {
u32 ref;
struct tipc_msg phdr;
struct list_head port_list;
u32 (*dispatcher)(struct tipc_port *, struct sk_buff *);
void (*wakeup)(struct tipc_port *);
struct list_head wait_list;
u32 waiting_pkts;
u32 sent;
@ -106,29 +100,18 @@ struct tipc_port_list;
/*
* TIPC port manipulation routines
*/
struct tipc_port *tipc_createport(struct sock *sk,
u32 (*dispatcher)(struct tipc_port *,
struct sk_buff *),
void (*wakeup)(struct tipc_port *),
const u32 importance);
u32 tipc_port_init(struct tipc_port *p_ptr,
const unsigned int importance);
int tipc_reject_msg(struct sk_buff *buf, u32 err);
void tipc_acknowledge(u32 port_ref, u32 ack);
int tipc_deleteport(struct tipc_port *p_ptr);
int tipc_portimportance(u32 portref, unsigned int *importance);
int tipc_set_portimportance(u32 portref, unsigned int importance);
int tipc_portunreliable(u32 portref, unsigned int *isunreliable);
int tipc_set_portunreliable(u32 portref, unsigned int isunreliable);
int tipc_portunreturnable(u32 portref, unsigned int *isunreturnable);
int tipc_set_portunreturnable(u32 portref, unsigned int isunreturnable);
void tipc_port_destroy(struct tipc_port *p_ptr);
int tipc_publish(struct tipc_port *p_ptr, unsigned int scope,
struct tipc_name_seq const *name_seq);
int tipc_withdraw(struct tipc_port *p_ptr, unsigned int scope,
struct tipc_name_seq const *name_seq);
@ -138,6 +121,7 @@ int tipc_port_disconnect(u32 portref);
int tipc_port_shutdown(u32 ref);
void tipc_port_wakeup(struct tipc_port *port);
/*
* The following routines require that the port be locked on entry
@ -151,20 +135,33 @@ int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg);
* TIPC messaging routines
*/
int tipc_port_rcv(struct sk_buff *buf);
int tipc_send(u32 portref, struct iovec const *msg_sect, unsigned int len);
int tipc_send2name(u32 portref, struct tipc_name const *name, u32 domain,
struct iovec const *msg_sect, unsigned int len);
int tipc_send(struct tipc_port *port,
struct iovec const *msg_sect,
unsigned int len);
int tipc_send2port(u32 portref, struct tipc_portid const *dest,
struct iovec const *msg_sect, unsigned int len);
int tipc_send2name(struct tipc_port *port,
struct tipc_name const *name,
u32 domain,
struct iovec const *msg_sect,
unsigned int len);
int tipc_port_mcast_xmit(u32 portref, struct tipc_name_seq const *seq,
struct iovec const *msg, unsigned int len);
int tipc_send2port(struct tipc_port *port,
struct tipc_portid const *dest,
struct iovec const *msg_sect,
unsigned int len);
int tipc_port_iovec_reject(struct tipc_port *p_ptr, struct tipc_msg *hdr,
struct iovec const *msg_sect, unsigned int len,
int tipc_port_mcast_xmit(struct tipc_port *port,
struct tipc_name_seq const *seq,
struct iovec const *msg,
unsigned int len);
int tipc_port_iovec_reject(struct tipc_port *p_ptr,
struct tipc_msg *hdr,
struct iovec const *msg_sect,
unsigned int len,
int err);
struct sk_buff *tipc_port_get_ports(void);
void tipc_port_proto_rcv(struct sk_buff *buf);
void tipc_port_mcast_rcv(struct sk_buff *buf, struct tipc_port_list *dp);
@ -188,14 +185,53 @@ static inline void tipc_port_unlock(struct tipc_port *p_ptr)
spin_unlock_bh(p_ptr->lock);
}
static inline struct tipc_port *tipc_port_deref(u32 ref)
{
return (struct tipc_port *)tipc_ref_deref(ref);
}
static inline int tipc_port_congested(struct tipc_port *p_ptr)
{
return (p_ptr->sent - p_ptr->acked) >= (TIPC_FLOW_CONTROL_WIN * 2);
}
static inline u32 tipc_port_peernode(struct tipc_port *p_ptr)
{
return msg_destnode(&p_ptr->phdr);
}
static inline u32 tipc_port_peerport(struct tipc_port *p_ptr)
{
return msg_destport(&p_ptr->phdr);
}
static inline bool tipc_port_unreliable(struct tipc_port *port)
{
return msg_src_droppable(&port->phdr) != 0;
}
static inline void tipc_port_set_unreliable(struct tipc_port *port,
bool unreliable)
{
msg_set_src_droppable(&port->phdr, unreliable ? 1 : 0);
}
static inline bool tipc_port_unreturnable(struct tipc_port *port)
{
return msg_dest_droppable(&port->phdr) != 0;
}
static inline void tipc_port_set_unreturnable(struct tipc_port *port,
bool unreturnable)
{
msg_set_dest_droppable(&port->phdr, unreturnable ? 1 : 0);
}
static inline int tipc_port_importance(struct tipc_port *port)
{
return msg_importance(&port->phdr);
}
static inline void tipc_port_set_importance(struct tipc_port *port, int imp)
{
msg_set_importance(&port->phdr, (u32)imp);
}
#endif

27
net/tipc/ref.c
View File

@ -89,7 +89,7 @@ struct ref_table {
static struct ref_table tipc_ref_table;
static DEFINE_RWLOCK(ref_table_lock);
static DEFINE_SPINLOCK(ref_table_lock);
/**
* tipc_ref_table_init - create reference table for objects
@ -159,7 +159,7 @@ u32 tipc_ref_acquire(void *object, spinlock_t **lock)
}
/* take a free entry, if available; otherwise initialize a new entry */
write_lock_bh(&ref_table_lock);
spin_lock_bh(&ref_table_lock);
if (tipc_ref_table.first_free) {
index = tipc_ref_table.first_free;
entry = &(tipc_ref_table.entries[index]);
@ -175,7 +175,7 @@ u32 tipc_ref_acquire(void *object, spinlock_t **lock)
} else {
ref = 0;
}
write_unlock_bh(&ref_table_lock);
spin_unlock_bh(&ref_table_lock);
/*
* Grab the lock so no one else can modify this entry
@ -216,7 +216,7 @@ void tipc_ref_discard(u32 ref)
index = ref & index_mask;
entry = &(tipc_ref_table.entries[index]);
write_lock_bh(&ref_table_lock);
spin_lock_bh(&ref_table_lock);
if (!entry->object) {
pr_err("Attempt to discard ref. to non-existent obj\n");
@ -242,7 +242,7 @@ void tipc_ref_discard(u32 ref)
tipc_ref_table.last_free = index;
exit:
write_unlock_bh(&ref_table_lock);
spin_unlock_bh(&ref_table_lock);
}
/**
@ -264,20 +264,3 @@ void *tipc_ref_lock(u32 ref)
}
return NULL;
}
/**
* tipc_ref_deref - return pointer referenced object (without locking it)
*/
void *tipc_ref_deref(u32 ref)
{
if (likely(tipc_ref_table.entries)) {
struct reference *entry;
entry = &tipc_ref_table.entries[ref &
tipc_ref_table.index_mask];
if (likely(entry->ref == ref))
return entry->object;
}
return NULL;
}

1
net/tipc/ref.h
View File

@ -44,6 +44,5 @@ u32 tipc_ref_acquire(void *object, spinlock_t **lock);
void tipc_ref_discard(u32 ref);
void *tipc_ref_lock(u32 ref);
void *tipc_ref_deref(u32 ref);
#endif

240
net/tipc/socket.c
View File

@ -1,7 +1,7 @@
/*
* net/tipc/socket.c: TIPC socket API
*
* Copyright (c) 2001-2007, 2012 Ericsson AB
* Copyright (c) 2001-2007, 2012-2014, Ericsson AB
* Copyright (c) 2004-2008, 2010-2013, Wind River Systems
* All rights reserved.
*
@ -38,26 +38,13 @@
#include "port.h"
#include <linux/export.h>
#include <net/sock.h>
#define SS_LISTENING -1 /* socket is listening */
#define SS_READY -2 /* socket is connectionless */
#define CONN_TIMEOUT_DEFAULT 8000 /* default connect timeout = 8s */
struct tipc_sock {
struct sock sk;
struct tipc_port *p;
struct tipc_portid peer_name;
unsigned int conn_timeout;
};
#define tipc_sk(sk) ((struct tipc_sock *)(sk))
#define tipc_sk_port(sk) (tipc_sk(sk)->p)
static int backlog_rcv(struct sock *sk, struct sk_buff *skb);
static u32 dispatch(struct tipc_port *tport, struct sk_buff *buf);
static void wakeupdispatch(struct tipc_port *tport);
static void tipc_data_ready(struct sock *sk, int len);
static void tipc_write_space(struct sock *sk);
static int tipc_release(struct socket *sock);
@ -115,6 +102,8 @@ static struct proto tipc_proto_kern;
* - port reference
*/
#include "socket.h"
/**
* advance_rx_queue - discard first buffer in socket receive queue
*
@ -150,13 +139,15 @@ static void reject_rx_queue(struct sock *sk)
*
* Returns 0 on success, errno otherwise
*/
static int tipc_sk_create(struct net *net, struct socket *sock, int protocol,
int kern)
static int tipc_sk_create(struct net *net, struct socket *sock,
int protocol, int kern)
{
const struct proto_ops *ops;
socket_state state;
struct sock *sk;
struct tipc_port *tp_ptr;
struct tipc_sock *tsk;
struct tipc_port *port;
u32 ref;
/* Validate arguments */
if (unlikely(protocol != 0))
@ -189,10 +180,12 @@ static int tipc_sk_create(struct net *net, struct socket *sock, int protocol,
if (sk == NULL)
return -ENOMEM;
/* Allocate TIPC port for socket to use */
tp_ptr = tipc_createport(sk, &dispatch, &wakeupdispatch,
TIPC_LOW_IMPORTANCE);
if (unlikely(!tp_ptr)) {
tsk = tipc_sk(sk);
port = &tsk->port;
ref = tipc_port_init(port, TIPC_LOW_IMPORTANCE);
if (!ref) {
pr_warn("Socket registration failed, ref. table exhausted\n");
sk_free(sk);
return -ENOMEM;
}
@ -206,17 +199,14 @@ static int tipc_sk_create(struct net *net, struct socket *sock, int protocol,
sk->sk_rcvbuf = sysctl_tipc_rmem[1];
sk->sk_data_ready = tipc_data_ready;
sk->sk_write_space = tipc_write_space;
tipc_sk(sk)->p = tp_ptr;
tipc_sk(sk)->conn_timeout = CONN_TIMEOUT_DEFAULT;
spin_unlock_bh(tp_ptr->lock);
tipc_port_unlock(port);
if (sock->state == SS_READY) {
tipc_set_portunreturnable(tp_ptr->ref, 1);
tipc_port_set_unreturnable(port, true);
if (sock->type == SOCK_DGRAM)
tipc_set_portunreliable(tp_ptr->ref, 1);
tipc_port_set_unreliable(port, true);
}
return 0;
}
@ -308,7 +298,8 @@ int tipc_sock_accept_local(struct socket *sock, struct socket **newsock,
static int tipc_release(struct socket *sock)
{
struct sock *sk = sock->sk;
struct tipc_port *tport;
struct tipc_sock *tsk;
struct tipc_port *port;
struct sk_buff *buf;
int res;
@ -319,7 +310,8 @@ static int tipc_release(struct socket *sock)
if (sk == NULL)
return 0;
tport = tipc_sk_port(sk);
tsk = tipc_sk(sk);
port = &tsk->port;
lock_sock(sk);
/*
@ -336,17 +328,16 @@ static int tipc_release(struct socket *sock)
if ((sock->state == SS_CONNECTING) ||
(sock->state == SS_CONNECTED)) {
sock->state = SS_DISCONNECTING;
tipc_port_disconnect(tport->ref);
tipc_port_disconnect(port->ref);
}
tipc_reject_msg(buf, TIPC_ERR_NO_PORT);
}
}
/*
* Delete TIPC port; this ensures no more messages are queued
* (also disconnects an active connection & sends a 'FIN-' to peer)
/* Destroy TIPC port; also disconnects an active connection and
* sends a 'FIN-' to peer.
*/
res = tipc_deleteport(tport);
tipc_port_destroy(port);
/* Discard any remaining (connection-based) messages in receive queue */
__skb_queue_purge(&sk->sk_receive_queue);
@ -381,12 +372,12 @@ static int tipc_bind(struct socket *sock, struct sockaddr *uaddr,
{
struct sock *sk = sock->sk;
struct sockaddr_tipc *addr = (struct sockaddr_tipc *)uaddr;
struct tipc_port *tport = tipc_sk_port(sock->sk);
struct tipc_sock *tsk = tipc_sk(sk);
int res = -EINVAL;
lock_sock(sk);
if (unlikely(!uaddr_len)) {
res = tipc_withdraw(tport, 0, NULL);
res = tipc_withdraw(&tsk->port, 0, NULL);
goto exit;
}
@ -414,8 +405,8 @@ static int tipc_bind(struct socket *sock, struct sockaddr *uaddr,
}
res = (addr->scope > 0) ?
tipc_publish(tport, addr->scope, &addr->addr.nameseq) :
tipc_withdraw(tport, -addr->scope, &addr->addr.nameseq);
tipc_publish(&tsk->port, addr->scope, &addr->addr.nameseq) :
tipc_withdraw(&tsk->port, -addr->scope, &addr->addr.nameseq);
exit:
release_sock(sk);
return res;
@ -438,17 +429,17 @@ static int tipc_getname(struct socket *sock, struct sockaddr *uaddr,
int *uaddr_len, int peer)
{
struct sockaddr_tipc *addr = (struct sockaddr_tipc *)uaddr;
struct tipc_sock *tsock = tipc_sk(sock->sk);
struct tipc_sock *tsk = tipc_sk(sock->sk);
memset(addr, 0, sizeof(*addr));
if (peer) {
if ((sock->state != SS_CONNECTED) &&
((peer != 2) || (sock->state != SS_DISCONNECTING)))
return -ENOTCONN;
addr->addr.id.ref = tsock->peer_name.ref;
addr->addr.id.node = tsock->peer_name.node;
addr->addr.id.ref = tipc_port_peerport(&tsk->port);
addr->addr.id.node = tipc_port_peernode(&tsk->port);
} else {
addr->addr.id.ref = tsock->p->ref;
addr->addr.id.ref = tsk->port.ref;
addr->addr.id.node = tipc_own_addr;
}
@ -505,18 +496,19 @@ static unsigned int tipc_poll(struct file *file, struct socket *sock,
poll_table *wait)
{
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
u32 mask = 0;
sock_poll_wait(file, sk_sleep(sk), wait);
switch ((int)sock->state) {
case SS_UNCONNECTED:
if (!tipc_sk_port(sk)->congested)
if (!tsk->port.congested)
mask |= POLLOUT;
break;
case SS_READY:
case SS_CONNECTED:
if (!tipc_sk_port(sk)->congested)
if (!tsk->port.congested)
mask |= POLLOUT;
/* fall thru' */
case SS_CONNECTING:
@ -566,7 +558,7 @@ static int dest_name_check(struct sockaddr_tipc *dest, struct msghdr *m)
static int tipc_wait_for_sndmsg(struct socket *sock, long *timeo_p)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
struct tipc_sock *tsk = tipc_sk(sk);
DEFINE_WAIT(wait);
int done;
@ -582,12 +574,13 @@ static int tipc_wait_for_sndmsg(struct socket *sock, long *timeo_p)
return sock_intr_errno(*timeo_p);
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
done = sk_wait_event(sk, timeo_p, !tport->congested);
done = sk_wait_event(sk, timeo_p, !tsk->port.congested);
finish_wait(sk_sleep(sk), &wait);
} while (!done);
return 0;
}
/**
* tipc_sendmsg - send message in connectionless manner
* @iocb: if NULL, indicates that socket lock is already held
@ -606,7 +599,8 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *m, size_t total_len)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_port *port = &tsk->port;
DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
int needs_conn;
long timeo;
@ -633,13 +627,13 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
res = -EISCONN;
goto exit;
}
if (tport->published) {
if (tsk->port.published) {
res = -EOPNOTSUPP;
goto exit;
}
if (dest->addrtype == TIPC_ADDR_NAME) {
tport->conn_type = dest->addr.name.name.type;
tport->conn_instance = dest->addr.name.name.instance;
tsk->port.conn_type = dest->addr.name.name.type;
tsk->port.conn_instance = dest->addr.name.name.instance;
}
/* Abort any pending connection attempts (very unlikely) */
@ -652,13 +646,13 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
res = dest_name_check(dest, m);
if (res)
break;
res = tipc_send2name(tport->ref,
res = tipc_send2name(port,
&dest->addr.name.name,
dest->addr.name.domain,
m->msg_iov,
total_len);
} else if (dest->addrtype == TIPC_ADDR_ID) {
res = tipc_send2port(tport->ref,
res = tipc_send2port(port,
&dest->addr.id,
m->msg_iov,
total_len);
@ -670,7 +664,7 @@ static int tipc_sendmsg(struct kiocb *iocb, struct socket *sock,
res = dest_name_check(dest, m);
if (res)
break;
res = tipc_port_mcast_xmit(tport->ref,
res = tipc_port_mcast_xmit(port,
&dest->addr.nameseq,
m->msg_iov,
total_len);
@ -694,7 +688,8 @@ exit:
static int tipc_wait_for_sndpkt(struct socket *sock, long *timeo_p)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_port *port = &tsk->port;
DEFINE_WAIT(wait);
int done;
@ -713,7 +708,7 @@ static int tipc_wait_for_sndpkt(struct socket *sock, long *timeo_p)
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
done = sk_wait_event(sk, timeo_p,
(!tport->congested || !tport->connected));
(!port->congested || !port->connected));
finish_wait(sk_sleep(sk), &wait);
} while (!done);
return 0;
@ -734,7 +729,7 @@ static int tipc_send_packet(struct kiocb *iocb, struct socket *sock,
struct msghdr *m, size_t total_len)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
struct tipc_sock *tsk = tipc_sk(sk);
DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
int res = -EINVAL;
long timeo;
@ -759,7 +754,7 @@ static int tipc_send_packet(struct kiocb *iocb, struct socket *sock,
timeo = sock_sndtimeo(sk, m->msg_flags & MSG_DONTWAIT);
do {
res = tipc_send(tport->ref, m->msg_iov, total_len);
res = tipc_send(&tsk->port, m->msg_iov, total_len);
if (likely(res != -ELINKCONG))
break;
res = tipc_wait_for_sndpkt(sock, &timeo);
@ -788,7 +783,7 @@ static int tipc_send_stream(struct kiocb *iocb, struct socket *sock,
struct msghdr *m, size_t total_len)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
struct tipc_sock *tsk = tipc_sk(sk);
struct msghdr my_msg;
struct iovec my_iov;
struct iovec *curr_iov;
@ -836,14 +831,14 @@ static int tipc_send_stream(struct kiocb *iocb, struct socket *sock,
my_msg.msg_name = NULL;
bytes_sent = 0;
hdr_size = msg_hdr_sz(&tport->phdr);
hdr_size = msg_hdr_sz(&tsk->port.phdr);
while (curr_iovlen--) {
curr_start = curr_iov->iov_base;
curr_left = curr_iov->iov_len;
while (curr_left) {
bytes_to_send = tport->max_pkt - hdr_size;
bytes_to_send = tsk->port.max_pkt - hdr_size;
if (bytes_to_send > TIPC_MAX_USER_MSG_SIZE)
bytes_to_send = TIPC_MAX_USER_MSG_SIZE;
if (curr_left < bytes_to_send)
@ -872,27 +867,25 @@ exit:
/**
* auto_connect - complete connection setup to a remote port
* @sock: socket structure
* @tsk: tipc socket structure
* @msg: peer's response message
*
* Returns 0 on success, errno otherwise
*/
static int auto_connect(struct socket *sock, struct tipc_msg *msg)
static int auto_connect(struct tipc_sock *tsk, struct tipc_msg *msg)
{
struct tipc_sock *tsock = tipc_sk(sock->sk);
struct tipc_port *p_ptr;
struct tipc_port *port = &tsk->port;
struct socket *sock = tsk->sk.sk_socket;
struct tipc_portid peer;
tsock->peer_name.ref = msg_origport(msg);
tsock->peer_name.node = msg_orignode(msg);
p_ptr = tipc_port_deref(tsock->p->ref);
if (!p_ptr)
return -EINVAL;
peer.ref = msg_origport(msg);
peer.node = msg_orignode(msg);
__tipc_port_connect(tsock->p->ref, p_ptr, &tsock->peer_name);
__tipc_port_connect(port->ref, port, &peer);
if (msg_importance(msg) > TIPC_CRITICAL_IMPORTANCE)
return -EINVAL;
msg_set_importance(&p_ptr->phdr, (u32)msg_importance(msg));
msg_set_importance(&port->phdr, (u32)msg_importance(msg));
sock->state = SS_CONNECTED;
return 0;
}
@ -1038,7 +1031,8 @@ static int tipc_recvmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *m, size_t buf_len, int flags)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_port *port = &tsk->port;
struct sk_buff *buf;
struct tipc_msg *msg;
long timeo;
@ -1081,7 +1075,7 @@ restart:
set_orig_addr(m, msg);
/* Capture ancillary data (optional) */
res = anc_data_recv(m, msg, tport);
res = anc_data_recv(m, msg, port);
if (res)
goto exit;
@ -1107,8 +1101,8 @@ restart:
/* Consume received message (optional) */
if (likely(!(flags & MSG_PEEK))) {
if ((sock->state != SS_READY) &&
(++tport->conn_unacked >= TIPC_FLOW_CONTROL_WIN))
tipc_acknowledge(tport->ref, tport->conn_unacked);
(++port->conn_unacked >= TIPC_FLOW_CONTROL_WIN))
tipc_acknowledge(port->ref, port->conn_unacked);
advance_rx_queue(sk);
}
exit:
@ -1132,7 +1126,8 @@ static int tipc_recv_stream(struct kiocb *iocb, struct socket *sock,
struct msghdr *m, size_t buf_len, int flags)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_port *port = &tsk->port;
struct sk_buff *buf;
struct tipc_msg *msg;
long timeo;
@ -1177,7 +1172,7 @@ restart:
/* Optionally capture sender's address & ancillary data of first msg */
if (sz_copied == 0) {
set_orig_addr(m, msg);
res = anc_data_recv(m, msg, tport);
res = anc_data_recv(m, msg, port);
if (res)
goto exit;
}
@ -1215,8 +1210,8 @@ restart:
/* Consume received message (optional) */
if (likely(!(flags & MSG_PEEK))) {
if (unlikely(++tport->conn_unacked >= TIPC_FLOW_CONTROL_WIN))
tipc_acknowledge(tport->ref, tport->conn_unacked);
if (unlikely(++port->conn_unacked >= TIPC_FLOW_CONTROL_WIN))
tipc_acknowledge(port->ref, port->conn_unacked);
advance_rx_queue(sk);
}
@ -1268,17 +1263,19 @@ static void tipc_data_ready(struct sock *sk, int len)
/**
* filter_connect - Handle all incoming messages for a connection-based socket
* @tsock: TIPC socket
* @tsk: TIPC socket
* @msg: message
*
* Returns TIPC error status code and socket error status code
* once it encounters some errors
*/
static u32 filter_connect(struct tipc_sock *tsock, struct sk_buff **buf)
static u32 filter_connect(struct tipc_sock *tsk, struct sk_buff **buf)
{
struct socket *sock = tsock->sk.sk_socket;
struct sock *sk = &tsk->sk;
struct tipc_port *port = &tsk->port;
struct socket *sock = sk->sk_socket;
struct tipc_msg *msg = buf_msg(*buf);
struct sock *sk = &tsock->sk;
u32 retval = TIPC_ERR_NO_PORT;
int res;
@ -1288,10 +1285,10 @@ static u32 filter_connect(struct tipc_sock *tsock, struct sk_buff **buf)
switch ((int)sock->state) {
case SS_CONNECTED:
/* Accept only connection-based messages sent by peer */
if (msg_connected(msg) && tipc_port_peer_msg(tsock->p, msg)) {
if (msg_connected(msg) && tipc_port_peer_msg(port, msg)) {
if (unlikely(msg_errcode(msg))) {
sock->state = SS_DISCONNECTING;
__tipc_port_disconnect(tsock->p);
__tipc_port_disconnect(port);
}
retval = TIPC_OK;
}
@ -1308,7 +1305,7 @@ static u32 filter_connect(struct tipc_sock *tsock, struct sk_buff **buf)
if (unlikely(!msg_connected(msg)))
break;
res = auto_connect(sock, msg);
res = auto_connect(tsk, msg);
if (res) {
sock->state = SS_DISCONNECTING;
sk->sk_err = -res;
@ -1387,6 +1384,7 @@ static unsigned int rcvbuf_limit(struct sock *sk, struct sk_buff *buf)
static u32 filter_rcv(struct sock *sk, struct sk_buff *buf)
{
struct socket *sock = sk->sk_socket;
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_msg *msg = buf_msg(buf);
unsigned int limit = rcvbuf_limit(sk, buf);
u32 res = TIPC_OK;
@ -1399,7 +1397,7 @@ static u32 filter_rcv(struct sock *sk, struct sk_buff *buf)
if (msg_connected(msg))
return TIPC_ERR_NO_PORT;
} else {
res = filter_connect(tipc_sk(sk), &buf);
res = filter_connect(tsk, &buf);
if (res != TIPC_OK || buf == NULL)
return res;
}
@ -1437,17 +1435,16 @@ static int backlog_rcv(struct sock *sk, struct sk_buff *buf)
}
/**
* dispatch - handle incoming message
* @tport: TIPC port that received message
* tipc_sk_rcv - handle incoming message
* @sk: socket receiving message
* @buf: message
*
* Called with port lock already taken.
*
* Returns TIPC error status code (TIPC_OK if message is not to be rejected)
*/
static u32 dispatch(struct tipc_port *tport, struct sk_buff *buf)
u32 tipc_sk_rcv(struct sock *sk, struct sk_buff *buf)
{
struct sock *sk = tport->sk;
u32 res;
/*
@ -1470,19 +1467,6 @@ static u32 dispatch(struct tipc_port *tport, struct sk_buff *buf)
return res;
}
/**
* wakeupdispatch - wake up port after congestion
* @tport: port to wakeup
*
* Called with port lock already taken.
*/
static void wakeupdispatch(struct tipc_port *tport)
{
struct sock *sk = tport->sk;
sk->sk_write_space(sk);
}
static int tipc_wait_for_connect(struct socket *sock, long *timeo_p)
{
struct sock *sk = sock->sk;
@ -1659,9 +1643,9 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags)
{
struct sock *new_sk, *sk = sock->sk;
struct sk_buff *buf;
struct tipc_sock *new_tsock;
struct tipc_port *new_tport;
struct tipc_port *new_port;
struct tipc_msg *msg;
struct tipc_portid peer;
u32 new_ref;
long timeo;
int res;
@ -1672,7 +1656,6 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags)
res = -EINVAL;
goto exit;
}
timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
res = tipc_wait_for_accept(sock, timeo);
if (res)
@ -1685,9 +1668,8 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags)
goto exit;
new_sk = new_sock->sk;
new_tsock = tipc_sk(new_sk);
new_tport = new_tsock->p;
new_ref = new_tport->ref;
new_port = &tipc_sk(new_sk)->port;
new_ref = new_port->ref;
msg = buf_msg(buf);
/* we lock on new_sk; but lockdep sees the lock on sk */
@ -1700,15 +1682,15 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags)
reject_rx_queue(new_sk);
/* Connect new socket to it's peer */
new_tsock->peer_name.ref = msg_origport(msg);
new_tsock->peer_name.node = msg_orignode(msg);
tipc_port_connect(new_ref, &new_tsock->peer_name);
peer.ref = msg_origport(msg);
peer.node = msg_orignode(msg);
tipc_port_connect(new_ref, &peer);
new_sock->state = SS_CONNECTED;
tipc_set_portimportance(new_ref, msg_importance(msg));
tipc_port_set_importance(new_port, msg_importance(msg));
if (msg_named(msg)) {
new_tport->conn_type = msg_nametype(msg);
new_tport->conn_instance = msg_nameinst(msg);
new_port->conn_type = msg_nametype(msg);
new_port->conn_instance = msg_nameinst(msg);
}
/*
@ -1726,7 +1708,6 @@ static int tipc_accept(struct socket *sock, struct socket *new_sock, int flags)
skb_set_owner_r(buf, new_sk);
}
release_sock(new_sk);
exit:
release_sock(sk);
return res;
@ -1744,7 +1725,8 @@ exit:
static int tipc_shutdown(struct socket *sock, int how)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_port *port = &tsk->port;
struct sk_buff *buf;
int res;
@ -1765,10 +1747,10 @@ restart:
kfree_skb(buf);
goto restart;
}
tipc_port_disconnect(tport->ref);
tipc_port_disconnect(port->ref);
tipc_reject_msg(buf, TIPC_CONN_SHUTDOWN);
} else {
tipc_port_shutdown(tport->ref);
tipc_port_shutdown(port->ref);
}
sock->state = SS_DISCONNECTING;
@ -1810,7 +1792,8 @@ static int tipc_setsockopt(struct socket *sock, int lvl, int opt,
char __user *ov, unsigned int ol)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_port *port = &tsk->port;
u32 value;
int res;
@ -1828,16 +1811,16 @@ static int tipc_setsockopt(struct socket *sock, int lvl, int opt,
switch (opt) {
case TIPC_IMPORTANCE:
res = tipc_set_portimportance(tport->ref, value);
tipc_port_set_importance(port, value);
break;
case TIPC_SRC_DROPPABLE:
if (sock->type != SOCK_STREAM)
res = tipc_set_portunreliable(tport->ref, value);
tipc_port_set_unreliable(port, value);
else
res = -ENOPROTOOPT;
break;
case TIPC_DEST_DROPPABLE:
res = tipc_set_portunreturnable(tport->ref, value);
tipc_port_set_unreturnable(port, value);
break;
case TIPC_CONN_TIMEOUT:
tipc_sk(sk)->conn_timeout = value;
@ -1869,7 +1852,8 @@ static int tipc_getsockopt(struct socket *sock, int lvl, int opt,
char __user *ov, int __user *ol)
{
struct sock *sk = sock->sk;
struct tipc_port *tport = tipc_sk_port(sk);
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_port *port = &tsk->port;
int len;
u32 value;
int res;
@ -1886,13 +1870,13 @@ static int tipc_getsockopt(struct socket *sock, int lvl, int opt,
switch (opt) {
case TIPC_IMPORTANCE:
res = tipc_portimportance(tport->ref, &value);
value = tipc_port_importance(port);
break;
case TIPC_SRC_DROPPABLE:
res = tipc_portunreliable(tport->ref, &value);
value = tipc_port_unreliable(port);
break;
case TIPC_DEST_DROPPABLE:
res = tipc_portunreturnable(tport->ref, &value);
value = tipc_port_unreturnable(port);
break;
case TIPC_CONN_TIMEOUT:
value = tipc_sk(sk)->conn_timeout;

72
net/tipc/socket.h Normal file
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/* net/tipc/socket.h: Include file for TIPC socket code
*
* Copyright (c) 2014, Ericsson AB
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _TIPC_SOCK_H
#define _TIPC_SOCK_H
#include "port.h"
#include <net/sock.h>
/**
* struct tipc_sock - TIPC socket structure
* @sk: socket - interacts with 'port' and with user via the socket API
* @port: port - interacts with 'sk' and with the rest of the TIPC stack
* @peer_name: the peer of the connection, if any
* @conn_timeout: the time we can wait for an unresponded setup request
*/
struct tipc_sock {
struct sock sk;
struct tipc_port port;
unsigned int conn_timeout;
};
static inline struct tipc_sock *tipc_sk(const struct sock *sk)
{
return container_of(sk, struct tipc_sock, sk);
}
static inline struct tipc_sock *tipc_port_to_sock(const struct tipc_port *port)
{
return container_of(port, struct tipc_sock, port);
}
static inline void tipc_sock_wakeup(struct tipc_sock *tsk)
{
tsk->sk.sk_write_space(&tsk->sk);
}
u32 tipc_sk_rcv(struct sock *sk, struct sk_buff *buf);
#endif