return msg_destport(&p_ptr->phdr);
}
+/*
+ * tipc_port_peer_msg - verify message was sent by connected port's peer
+ *
+ * Handles cases where the node's network address has changed from
+ * the default of <0.0.0> to its configured setting.
+ */
+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))
+ return 0;
+
+ orignode = msg_orignode(msg);
+ peernode = port_peernode(p_ptr);
+ return (orignode == peernode) ||
+ (!orignode && (peernode == tipc_own_addr)) ||
+ (!peernode && (orignode == tipc_own_addr));
+}
+
/**
* tipc_multicast - send a multicast message to local and remote destinations
*/
-
int tipc_multicast(u32 ref, struct tipc_name_seq const *seq,
u32 num_sect, struct iovec const *msg_sect,
unsigned int total_len)
return -EINVAL;
/* Create multicast message */
-
hdr = &oport->phdr;
msg_set_type(hdr, TIPC_MCAST_MSG);
msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE);
return res;
/* Figure out where to send multicast message */
-
ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper,
TIPC_NODE_SCOPE, &dports);
/* Send message to destinations (duplicate it only if necessary) */
-
if (ext_targets) {
if (dports.count != 0) {
ibuf = skb_copy(buf, GFP_ATOMIC);
*
* If there is no port list, perform a lookup to create one
*/
-
void tipc_port_recv_mcast(struct sk_buff *buf, struct tipc_port_list *dp)
{
struct tipc_msg *msg;
msg = buf_msg(buf);
/* Create destination port list, if one wasn't supplied */
-
if (dp == NULL) {
tipc_nametbl_mc_translate(msg_nametype(msg),
msg_namelower(msg),
}
/* Deliver a copy of message to each destination port */
-
if (dp->count != 0) {
msg_set_destnode(msg, tipc_own_addr);
if (dp->count == 1) {
*
* Returns pointer to (locked) TIPC port, or NULL if unable to create it
*/
-
struct tipc_port *tipc_createport_raw(void *usr_handle,
u32 (*dispatcher)(struct tipc_port *, struct sk_buff *),
void (*wakeup)(struct tipc_port *),
p_ptr->usr_handle = usr_handle;
p_ptr->max_pkt = MAX_PKT_DEFAULT;
p_ptr->ref = ref;
- msg = &p_ptr->phdr;
- tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0);
- msg_set_origport(msg, ref);
INIT_LIST_HEAD(&p_ptr->wait_list);
INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list);
p_ptr->dispatcher = dispatcher;
p_ptr->wakeup = wakeup;
p_ptr->user_port = NULL;
k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref);
- spin_lock_bh(&tipc_port_list_lock);
INIT_LIST_HEAD(&p_ptr->publications);
INIT_LIST_HEAD(&p_ptr->port_list);
+
+ /*
+ * Must hold port list lock while initializing message header template
+ * to ensure a change to node's own network address doesn't result
+ * in template containing out-dated network address information
+ */
+ spin_lock_bh(&tipc_port_list_lock);
+ msg = &p_ptr->phdr;
+ tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0);
+ msg_set_origport(msg, ref);
list_add_tail(&p_ptr->port_list, &ports);
spin_unlock_bh(&tipc_port_list_lock);
return p_ptr;
u32 rmsg_sz;
/* discard rejected message if it shouldn't be returned to sender */
-
if (WARN(!msg_isdata(msg),
"attempt to reject message with user=%u", msg_user(msg))) {
dump_stack();
* construct returned message by copying rejected message header and
* data (or subset), then updating header fields that need adjusting
*/
-
hdr_sz = msg_hdr_sz(msg);
rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE);
}
/* send returned message & dispose of rejected message */
-
src_node = msg_prevnode(msg);
- if (src_node == tipc_own_addr)
+ if (in_own_node(src_node))
tipc_port_recv_msg(rbuf);
else
tipc_link_send(rbuf, src_node, msg_link_selector(rmsg));
struct tipc_msg *msg = buf_msg(buf);
struct tipc_port *p_ptr;
struct sk_buff *r_buf = NULL;
- u32 orignode = msg_orignode(msg);
- u32 origport = msg_origport(msg);
u32 destport = msg_destport(msg);
int wakeable;
/* Validate connection */
-
p_ptr = tipc_port_lock(destport);
- if (!p_ptr || !p_ptr->connected ||
- (port_peernode(p_ptr) != orignode) ||
- (port_peerport(p_ptr) != origport)) {
+ if (!p_ptr || !p_ptr->connected || !tipc_port_peer_msg(p_ptr, msg)) {
r_buf = tipc_buf_acquire(BASIC_H_SIZE);
if (r_buf) {
msg = buf_msg(r_buf);
tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG,
- BASIC_H_SIZE, orignode);
+ BASIC_H_SIZE, msg_orignode(msg));
msg_set_errcode(msg, TIPC_ERR_NO_PORT);
msg_set_origport(msg, destport);
- msg_set_destport(msg, origport);
+ msg_set_destport(msg, msg_origport(msg));
}
if (p_ptr)
tipc_port_unlock(p_ptr);
}
/* Process protocol message sent by peer */
-
switch (msg_type(msg)) {
case CONN_ACK:
wakeable = tipc_port_congested(p_ptr) && p_ptr->congested &&
spin_lock_bh(&tipc_port_list_lock);
list_for_each_entry(p_ptr, &ports, port_list) {
msg = &p_ptr->phdr;
- if (msg_orignode(msg) == tipc_own_addr)
- break;
msg_set_prevnode(msg, tipc_own_addr);
msg_set_orignode(msg, tipc_own_addr);
}
* port_dispatcher_sigh(): Signal handler for messages destinated
* to the tipc_port interface.
*/
-
static void port_dispatcher_sigh(void *dummy)
{
struct sk_buff *buf;
struct tipc_name_seq dseq;
void *usr_handle;
int connected;
+ int peer_invalid;
int published;
u32 message_type;
up_ptr = p_ptr->user_port;
usr_handle = up_ptr->usr_handle;
connected = p_ptr->connected;
+ peer_invalid = connected && !tipc_port_peer_msg(p_ptr, msg);
published = p_ptr->published;
if (unlikely(msg_errcode(msg)))
case TIPC_CONN_MSG:{
tipc_conn_msg_event cb = up_ptr->conn_msg_cb;
- u32 peer_port = port_peerport(p_ptr);
- u32 peer_node = port_peernode(p_ptr);
u32 dsz;
tipc_port_unlock(p_ptr);
if (unlikely(!connected)) {
if (tipc_connect2port(dref, &orig))
goto reject;
- } else if ((msg_origport(msg) != peer_port) ||
- (msg_orignode(msg) != peer_node))
+ } else if (peer_invalid)
goto reject;
dsz = msg_data_sz(msg);
if (unlikely(dsz &&
case TIPC_CONN_MSG:{
tipc_conn_shutdown_event cb =
up_ptr->conn_err_cb;
- u32 peer_port = port_peerport(p_ptr);
- u32 peer_node = port_peernode(p_ptr);
tipc_port_unlock(p_ptr);
- if (!cb || !connected)
- break;
- if ((msg_origport(msg) != peer_port) ||
- (msg_orignode(msg) != peer_node))
+ if (!cb || !connected || peer_invalid)
break;
tipc_disconnect(dref);
skb_pull(buf, msg_hdr_sz(msg));
* port_dispatcher(): Dispatcher for messages destinated
* to the tipc_port interface. Called with port locked.
*/
-
static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf)
{
buf->next = NULL;
}
/*
- * Wake up port after congestion: Called with port locked,
- *
+ * Wake up port after congestion: Called with port locked
*/
-
static void port_wakeup_sh(unsigned long ref)
{
struct tipc_port *p_ptr;
/*
* tipc_createport(): user level call.
*/
-
int tipc_createport(void *usr_handle,
unsigned int importance,
tipc_msg_err_event error_cb,
tipc_msg_event msg_cb,
tipc_named_msg_event named_msg_cb,
tipc_conn_msg_event conn_msg_cb,
- tipc_continue_event continue_event_cb,/* May be zero */
+ tipc_continue_event continue_event_cb, /* May be zero */
u32 *portref)
{
struct user_port *up_ptr;
if (p_ptr->connected)
goto exit;
- if (seq->lower > seq->upper)
- goto exit;
- if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE))
- goto exit;
key = ref + p_ptr->pub_count + 1;
if (key == ref) {
res = -EADDRINUSE;
*
* Port must be locked.
*/
-
int tipc_disconnect_port(struct tipc_port *tp_ptr)
{
int res;
* tipc_disconnect(): Disconnect port form peer.
* This is a node local operation.
*/
-
int tipc_disconnect(u32 ref)
{
struct tipc_port *p_ptr;
/**
* tipc_port_recv_msg - receive message from lower layer and deliver to port user
*/
-
int tipc_port_recv_msg(struct sk_buff *buf)
{
struct tipc_port *p_ptr;
/* validate destination & pass to port, otherwise reject message */
p_ptr = tipc_port_lock(destport);
if (likely(p_ptr)) {
- if (likely(p_ptr->connected)) {
- if ((unlikely(msg_origport(msg) !=
- tipc_peer_port(p_ptr))) ||
- (unlikely(msg_orignode(msg) !=
- tipc_peer_node(p_ptr))) ||
- (unlikely(!msg_connected(msg)))) {
- err = TIPC_ERR_NO_PORT;
- tipc_port_unlock(p_ptr);
- goto reject;
- }
- }
err = p_ptr->dispatcher(p_ptr, buf);
tipc_port_unlock(p_ptr);
if (likely(!err))
} else {
err = TIPC_ERR_NO_PORT;
}
-reject:
+
return tipc_reject_msg(buf, err);
}
* tipc_port_recv_sections(): Concatenate and deliver sectioned
* message for this node.
*/
-
static int tipc_port_recv_sections(struct tipc_port *sender, unsigned int num_sect,
struct iovec const *msg_sect,
unsigned int total_len)
/**
* tipc_send - send message sections on connection
*/
-
int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect,
unsigned int total_len)
{
p_ptr->congested = 1;
if (!tipc_port_congested(p_ptr)) {
destnode = port_peernode(p_ptr);
- if (likely(destnode != tipc_own_addr))
+ if (likely(!in_own_node(destnode)))
res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect,
total_len, destnode);
else
/**
* tipc_send2name - send message sections to port name
*/
-
int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain,
unsigned int num_sect, struct iovec const *msg_sect,
unsigned int total_len)
msg_set_destport(msg, destport);
if (likely(destport || destnode)) {
- if (likely(destnode == tipc_own_addr))
+ if (likely(in_own_node(destnode)))
res = tipc_port_recv_sections(p_ptr, num_sect,
msg_sect, total_len);
- else
+ else if (tipc_own_addr)
res = tipc_link_send_sections_fast(p_ptr, msg_sect,
num_sect, total_len,
destnode);
+ else
+ res = tipc_port_reject_sections(p_ptr, msg, msg_sect,
+ num_sect, total_len,
+ TIPC_ERR_NO_NODE);
if (likely(res != -ELINKCONG)) {
if (res > 0)
p_ptr->sent++;
/**
* tipc_send2port - send message sections to port identity
*/
-
int tipc_send2port(u32 ref, struct tipc_portid const *dest,
unsigned int num_sect, struct iovec const *msg_sect,
unsigned int total_len)
msg_set_destport(msg, dest->ref);
msg_set_hdr_sz(msg, BASIC_H_SIZE);
- if (dest->node == tipc_own_addr)
+ if (in_own_node(dest->node))
res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect,
total_len);
- else
+ else if (tipc_own_addr)
res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect,
total_len, dest->node);
+ else
+ res = tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect,
+ total_len, TIPC_ERR_NO_NODE);
if (likely(res != -ELINKCONG)) {
if (res > 0)
p_ptr->sent++;
/**
* tipc_send_buf2port - send message buffer to port identity
*/
-
int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest,
struct sk_buff *buf, unsigned int dsz)
{
skb_push(buf, BASIC_H_SIZE);
skb_copy_to_linear_data(buf, msg, BASIC_H_SIZE);
- if (dest->node == tipc_own_addr)
+ if (in_own_node(dest->node))
res = tipc_port_recv_msg(buf);
else
res = tipc_send_buf_fast(buf, dest->node);
return dsz;
return -ELINKCONG;
}
-
projects / firefly-linux-kernel-4.4.55.git / blobdiff