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-rw-r--r--net/tipc/addr.h2
-rw-r--r--net/tipc/bcast.c28
-rw-r--r--net/tipc/bcast.h4
-rw-r--r--net/tipc/bearer.c42
-rw-r--r--net/tipc/bearer.h7
-rw-r--r--net/tipc/core.c2
-rw-r--r--net/tipc/discover.c4
-rw-r--r--net/tipc/discover.h2
-rw-r--r--net/tipc/link.c602
-rw-r--r--net/tipc/link.h57
-rw-r--r--net/tipc/name_distr.c8
-rw-r--r--net/tipc/name_distr.h2
-rw-r--r--net/tipc/net.c10
-rw-r--r--net/tipc/node.c14
-rw-r--r--net/tipc/port.c97
-rw-r--r--net/tipc/port.h26
-rw-r--r--net/tipc/socket.c188
17 files changed, 567 insertions, 528 deletions
diff --git a/net/tipc/addr.h b/net/tipc/addr.h
index 60b00ab93d74..a74acf9ee804 100644
--- a/net/tipc/addr.h
+++ b/net/tipc/addr.h
@@ -37,6 +37,8 @@
#ifndef _TIPC_ADDR_H
#define _TIPC_ADDR_H
+#include "core.h"
+
#define TIPC_ZONE_MASK 0xff000000u
#define TIPC_CLUSTER_MASK 0xfffff000u
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index bf860d9e75af..e0feb7ef1469 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -356,9 +356,9 @@ static void bclink_peek_nack(struct tipc_msg *msg)
}
/*
- * tipc_bclink_send_msg - broadcast a packet to all nodes in cluster
+ * tipc_bclink_xmit - broadcast a packet to all nodes in cluster
*/
-int tipc_bclink_send_msg(struct sk_buff *buf)
+int tipc_bclink_xmit(struct sk_buff *buf)
{
int res;
@@ -370,7 +370,7 @@ int tipc_bclink_send_msg(struct sk_buff *buf)
goto exit;
}
- res = tipc_link_send_buf(bcl, buf);
+ res = __tipc_link_xmit(bcl, buf);
if (likely(res >= 0)) {
bclink_set_last_sent();
bcl->stats.queue_sz_counts++;
@@ -399,19 +399,18 @@ static void bclink_accept_pkt(struct tipc_node *node, u32 seqno)
*/
if (((seqno - tipc_own_addr) % TIPC_MIN_LINK_WIN) == 0) {
- tipc_link_send_proto_msg(
- node->active_links[node->addr & 1],
- STATE_MSG, 0, 0, 0, 0, 0);
+ tipc_link_proto_xmit(node->active_links[node->addr & 1],
+ STATE_MSG, 0, 0, 0, 0, 0);
bcl->stats.sent_acks++;
}
}
/**
- * tipc_bclink_recv_pkt - receive a broadcast packet, and deliver upwards
+ * tipc_bclink_rcv - receive a broadcast packet, and deliver upwards
*
* tipc_net_lock is read_locked, no other locks set
*/
-void tipc_bclink_recv_pkt(struct sk_buff *buf)
+void tipc_bclink_rcv(struct sk_buff *buf)
{
struct tipc_msg *msg = buf_msg(buf);
struct tipc_node *node;
@@ -468,7 +467,7 @@ receive:
spin_unlock_bh(&bc_lock);
tipc_node_unlock(node);
if (likely(msg_mcast(msg)))
- tipc_port_recv_mcast(buf, NULL);
+ tipc_port_mcast_rcv(buf, NULL);
else
kfree_skb(buf);
} else if (msg_user(msg) == MSG_BUNDLER) {
@@ -478,12 +477,12 @@ receive:
bcl->stats.recv_bundled += msg_msgcnt(msg);
spin_unlock_bh(&bc_lock);
tipc_node_unlock(node);
- tipc_link_recv_bundle(buf);
+ tipc_link_bundle_rcv(buf);
} else if (msg_user(msg) == MSG_FRAGMENTER) {
int ret;
- ret = tipc_link_recv_fragment(&node->bclink.reasm_head,
- &node->bclink.reasm_tail,
- &buf);
+ ret = tipc_link_frag_rcv(&node->bclink.reasm_head,
+ &node->bclink.reasm_tail,
+ &buf);
if (ret == LINK_REASM_ERROR)
goto unlock;
spin_lock_bh(&bc_lock);
@@ -503,7 +502,7 @@ receive:
bclink_accept_pkt(node, seqno);
spin_unlock_bh(&bc_lock);
tipc_node_unlock(node);
- tipc_named_recv(buf);
+ tipc_named_rcv(buf);
} else {
spin_lock_bh(&bc_lock);
bclink_accept_pkt(node, seqno);
@@ -785,7 +784,6 @@ void tipc_bclink_init(void)
bcl->owner = &bclink->node;
bcl->max_pkt = MAX_PKT_DEFAULT_MCAST;
tipc_link_set_queue_limits(bcl, BCLINK_WIN_DEFAULT);
- spin_lock_init(&bcbearer->bearer.lock);
bcl->b_ptr = &bcbearer->bearer;
bcl->state = WORKING_WORKING;
strlcpy(bcl->name, tipc_bclink_name, TIPC_MAX_LINK_NAME);
diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h
index 6ee587b469fd..a80ef54b818e 100644
--- a/net/tipc/bcast.h
+++ b/net/tipc/bcast.h
@@ -90,8 +90,8 @@ void tipc_bclink_add_node(u32 addr);
void tipc_bclink_remove_node(u32 addr);
struct tipc_node *tipc_bclink_retransmit_to(void);
void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked);
-int tipc_bclink_send_msg(struct sk_buff *buf);
-void tipc_bclink_recv_pkt(struct sk_buff *buf);
+int tipc_bclink_xmit(struct sk_buff *buf);
+void tipc_bclink_rcv(struct sk_buff *buf);
u32 tipc_bclink_get_last_sent(void);
u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr);
void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent);
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index a38c89969c68..242cddd35a47 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -51,7 +51,7 @@ static struct tipc_media * const media_info_array[] = {
struct tipc_bearer tipc_bearers[MAX_BEARERS];
-static void bearer_disable(struct tipc_bearer *b_ptr);
+static void bearer_disable(struct tipc_bearer *b_ptr, bool shutting_down);
/**
* tipc_media_find - locates specified media object by name
@@ -327,12 +327,10 @@ restart:
b_ptr->net_plane = bearer_id + 'A';
b_ptr->active = 1;
b_ptr->priority = priority;
- INIT_LIST_HEAD(&b_ptr->links);
- spin_lock_init(&b_ptr->lock);
res = tipc_disc_create(b_ptr, &b_ptr->bcast_addr, disc_domain);
if (res) {
- bearer_disable(b_ptr);
+ bearer_disable(b_ptr, false);
pr_warn("Bearer <%s> rejected, discovery object creation failed\n",
name);
goto exit;
@@ -350,20 +348,9 @@ exit:
*/
static int tipc_reset_bearer(struct tipc_bearer *b_ptr)
{
- struct tipc_link *l_ptr;
- struct tipc_link *temp_l_ptr;
-
read_lock_bh(&tipc_net_lock);
pr_info("Resetting bearer <%s>\n", b_ptr->name);
- spin_lock_bh(&b_ptr->lock);
- list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) {
- struct tipc_node *n_ptr = l_ptr->owner;
-
- spin_lock_bh(&n_ptr->lock);
- tipc_link_reset(l_ptr);
- spin_unlock_bh(&n_ptr->lock);
- }
- spin_unlock_bh(&b_ptr->lock);
+ tipc_link_reset_list(b_ptr->identity);
read_unlock_bh(&tipc_net_lock);
return 0;
}
@@ -373,25 +360,14 @@ static int tipc_reset_bearer(struct tipc_bearer *b_ptr)
*
* Note: This routine assumes caller holds tipc_net_lock.
*/
-static void bearer_disable(struct tipc_bearer *b_ptr)
+static void bearer_disable(struct tipc_bearer *b_ptr, bool shutting_down)
{
- struct tipc_link *l_ptr;
- struct tipc_link *temp_l_ptr;
- struct tipc_link_req *temp_req;
-
pr_info("Disabling bearer <%s>\n", b_ptr->name);
- spin_lock_bh(&b_ptr->lock);
b_ptr->media->disable_media(b_ptr);
- list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) {
- tipc_link_delete(l_ptr);
- }
- temp_req = b_ptr->link_req;
- b_ptr->link_req = NULL;
- spin_unlock_bh(&b_ptr->lock);
-
- if (temp_req)
- tipc_disc_delete(temp_req);
+ tipc_link_delete_list(b_ptr->identity, shutting_down);
+ if (b_ptr->link_req)
+ tipc_disc_delete(b_ptr->link_req);
memset(b_ptr, 0, sizeof(struct tipc_bearer));
}
@@ -406,7 +382,7 @@ int tipc_disable_bearer(const char *name)
pr_warn("Attempt to disable unknown bearer <%s>\n", name);
res = -EINVAL;
} else {
- bearer_disable(b_ptr);
+ bearer_disable(b_ptr, false);
res = 0;
}
write_unlock_bh(&tipc_net_lock);
@@ -626,6 +602,6 @@ void tipc_bearer_stop(void)
for (i = 0; i < MAX_BEARERS; i++) {
if (tipc_bearers[i].active)
- bearer_disable(&tipc_bearers[i]);
+ bearer_disable(&tipc_bearers[i], true);
}
}
diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h
index 4f5db9ad5bf6..425dd8107a8f 100644
--- a/net/tipc/bearer.h
+++ b/net/tipc/bearer.h
@@ -107,10 +107,8 @@ struct tipc_media {
/**
* struct tipc_bearer - Generic TIPC bearer structure
- * @dev: ptr to associated network device
- * @usr_handle: pointer to additional media-specific information about bearer
+ * @media_ptr: pointer to additional media-specific information about bearer
* @mtu: max packet size bearer can support
- * @lock: spinlock for controlling access to bearer
* @addr: media-specific address associated with bearer
* @name: bearer name (format = media:interface)
* @media: ptr to media structure associated with bearer
@@ -120,7 +118,6 @@ struct tipc_media {
* @tolerance: default link tolerance for bearer
* @identity: array index of this bearer within TIPC bearer array
* @link_req: ptr to (optional) structure making periodic link setup requests
- * @links: list of non-congested links associated with bearer
* @active: non-zero if bearer structure is represents a bearer
* @net_plane: network plane ('A' through 'H') currently associated with bearer
* @nodes: indicates which nodes in cluster can be reached through bearer
@@ -134,7 +131,6 @@ struct tipc_bearer {
u32 mtu; /* initalized by media */
struct tipc_media_addr addr; /* initalized by media */
char name[TIPC_MAX_BEARER_NAME];
- spinlock_t lock;
struct tipc_media *media;
struct tipc_media_addr bcast_addr;
u32 priority;
@@ -142,7 +138,6 @@ struct tipc_bearer {
u32 tolerance;
u32 identity;
struct tipc_link_req *link_req;
- struct list_head links;
int active;
char net_plane;
struct tipc_node_map nodes;
diff --git a/net/tipc/core.c b/net/tipc/core.c
index f9e88d8b04ca..3f76b98d2fed 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -1,7 +1,7 @@
/*
* net/tipc/core.c: TIPC module code
*
- * Copyright (c) 2003-2006, Ericsson AB
+ * Copyright (c) 2003-2006, 2013, Ericsson AB
* Copyright (c) 2005-2006, 2010-2013, Wind River Systems
* All rights reserved.
*
diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index 412ff41b8611..fa94da6db3d4 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -110,11 +110,11 @@ static void disc_dupl_alert(struct tipc_bearer *b_ptr, u32 node_addr,
}
/**
- * tipc_disc_recv_msg - handle incoming link setup message (request or response)
+ * tipc_disc_rcv - handle incoming link setup message (request or response)
* @buf: buffer containing message
* @b_ptr: bearer that message arrived on
*/
-void tipc_disc_recv_msg(struct sk_buff *buf, struct tipc_bearer *b_ptr)
+void tipc_disc_rcv(struct sk_buff *buf, struct tipc_bearer *b_ptr)
{
struct tipc_node *n_ptr;
struct tipc_link *link;
diff --git a/net/tipc/discover.h b/net/tipc/discover.h
index 75b67c403aa3..b4fc962c3623 100644
--- a/net/tipc/discover.h
+++ b/net/tipc/discover.h
@@ -44,6 +44,6 @@ int tipc_disc_create(struct tipc_bearer *b_ptr, struct tipc_media_addr *dest,
void tipc_disc_delete(struct tipc_link_req *req);
void tipc_disc_add_dest(struct tipc_link_req *req);
void tipc_disc_remove_dest(struct tipc_link_req *req);
-void tipc_disc_recv_msg(struct sk_buff *buf, struct tipc_bearer *b_ptr);
+void tipc_disc_rcv(struct sk_buff *buf, struct tipc_bearer *b_ptr);
#endif
diff --git a/net/tipc/link.c b/net/tipc/link.c
index da6018beb6eb..284d6383ad6c 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -77,19 +77,19 @@ static const char *link_unk_evt = "Unknown link event ";
static void link_handle_out_of_seq_msg(struct tipc_link *l_ptr,
struct sk_buff *buf);
-static void link_recv_proto_msg(struct tipc_link *l_ptr, struct sk_buff *buf);
-static int tipc_link_tunnel_rcv(struct tipc_link **l_ptr,
+static void tipc_link_proto_rcv(struct tipc_link *l_ptr, struct sk_buff *buf);
+static int tipc_link_tunnel_rcv(struct tipc_node *n_ptr,
struct sk_buff **buf);
static void link_set_supervision_props(struct tipc_link *l_ptr, u32 tolerance);
-static int link_send_sections_long(struct tipc_port *sender,
- struct iovec const *msg_sect,
- unsigned int len, u32 destnode);
+static int tipc_link_iovec_long_xmit(struct tipc_port *sender,
+ struct iovec const *msg_sect,
+ unsigned int len, u32 destnode);
static void link_state_event(struct tipc_link *l_ptr, u32 event);
static void link_reset_statistics(struct tipc_link *l_ptr);
static void link_print(struct tipc_link *l_ptr, const char *str);
-static int link_send_long_buf(struct tipc_link *l_ptr, struct sk_buff *buf);
-static void tipc_link_send_sync(struct tipc_link *l);
-static void tipc_link_recv_sync(struct tipc_node *n, struct sk_buff *buf);
+static int tipc_link_frag_xmit(struct tipc_link *l_ptr, struct sk_buff *buf);
+static void tipc_link_sync_xmit(struct tipc_link *l);
+static void tipc_link_sync_rcv(struct tipc_node *n, struct sk_buff *buf);
/*
* Simple link routines
@@ -147,11 +147,6 @@ int tipc_link_is_active(struct tipc_link *l_ptr)
/**
* link_timeout - handle expiration of link timer
* @l_ptr: pointer to link
- *
- * This routine must not grab "tipc_net_lock" to avoid a potential deadlock conflict
- * with tipc_link_delete(). (There is no risk that the node will be deleted by
- * another thread because tipc_link_delete() always cancels the link timer before
- * tipc_node_delete() is called.)
*/
static void link_timeout(struct tipc_link *l_ptr)
{
@@ -213,8 +208,8 @@ static void link_set_timer(struct tipc_link *l_ptr, u32 time)
* Returns pointer to link.
*/
struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
- struct tipc_bearer *b_ptr,
- const struct tipc_media_addr *media_addr)
+ struct tipc_bearer *b_ptr,
+ const struct tipc_media_addr *media_addr)
{
struct tipc_link *l_ptr;
struct tipc_msg *msg;
@@ -279,41 +274,43 @@ struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
k_init_timer(&l_ptr->timer, (Handler)link_timeout,
(unsigned long)l_ptr);
- list_add_tail(&l_ptr->link_list, &b_ptr->links);
link_state_event(l_ptr, STARTING_EVT);
return l_ptr;
}
-/**
- * tipc_link_delete - delete a link
- * @l_ptr: pointer to link
- *
- * Note: 'tipc_net_lock' is write_locked, bearer is locked.
- * This routine must not grab the node lock until after link timer cancellation
- * to avoid a potential deadlock situation.
- */
-void tipc_link_delete(struct tipc_link *l_ptr)
-{
- if (!l_ptr) {
- pr_err("Attempt to delete non-existent link\n");
- return;
- }
- k_cancel_timer(&l_ptr->timer);
+void tipc_link_delete_list(unsigned int bearer_id, bool shutting_down)
+{
+ struct tipc_link *l_ptr;
+ struct tipc_node *n_ptr;
- tipc_node_lock(l_ptr->owner);
- tipc_link_reset(l_ptr);
- tipc_node_detach_link(l_ptr->owner, l_ptr);
- tipc_link_purge_queues(l_ptr);
- list_del_init(&l_ptr->link_list);
- tipc_node_unlock(l_ptr->owner);
- k_term_timer(&l_ptr->timer);
- kfree(l_ptr);
+ list_for_each_entry(n_ptr, &tipc_node_list, list) {
+ spin_lock_bh(&n_ptr->lock);
+ l_ptr = n_ptr->links[bearer_id];
+ if (l_ptr) {
+ tipc_link_reset(l_ptr);
+ if (shutting_down || !tipc_node_is_up(n_ptr)) {
+ tipc_node_detach_link(l_ptr->owner, l_ptr);
+ tipc_link_reset_fragments(l_ptr);
+ spin_unlock_bh(&n_ptr->lock);
+
+ /* Nobody else can access this link now: */
+ del_timer_sync(&l_ptr->timer);
+ kfree(l_ptr);
+ } else {
+ /* Detach/delete when failover is finished: */
+ l_ptr->flags |= LINK_STOPPED;
+ spin_unlock_bh(&n_ptr->lock);
+ del_timer_sync(&l_ptr->timer);
+ }
+ continue;
+ }
+ spin_unlock_bh(&n_ptr->lock);
+ }
}
-
/**
* link_schedule_port - schedule port for deferred sending
* @l_ptr: pointer to link
@@ -461,6 +458,19 @@ void tipc_link_reset(struct tipc_link *l_ptr)
link_reset_statistics(l_ptr);
}
+void tipc_link_reset_list(unsigned int bearer_id)
+{
+ struct tipc_link *l_ptr;
+ struct tipc_node *n_ptr;
+
+ list_for_each_entry(n_ptr, &tipc_node_list, list) {
+ spin_lock_bh(&n_ptr->lock);
+ l_ptr = n_ptr->links[bearer_id];
+ if (l_ptr)
+ tipc_link_reset(l_ptr);
+ spin_unlock_bh(&n_ptr->lock);
+ }
+}
static void link_activate(struct tipc_link *l_ptr)
{
@@ -479,7 +489,10 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
struct tipc_link *other;
u32 cont_intv = l_ptr->continuity_interval;
- if (!l_ptr->started && (event != STARTING_EVT))
+ if (l_ptr->flags & LINK_STOPPED)
+ return;
+
+ if (!(l_ptr->flags & LINK_STARTED) && (event != STARTING_EVT))
return; /* Not yet. */
/* Check whether changeover is going on */
@@ -499,12 +512,12 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
if (l_ptr->next_in_no != l_ptr->checkpoint) {
l_ptr->checkpoint = l_ptr->next_in_no;
if (tipc_bclink_acks_missing(l_ptr->owner)) {
- tipc_link_send_proto_msg(l_ptr, STATE_MSG,
- 0, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, STATE_MSG,
+ 0, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
} else if (l_ptr->max_pkt < l_ptr->max_pkt_target) {
- tipc_link_send_proto_msg(l_ptr, STATE_MSG,
- 1, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, STATE_MSG,
+ 1, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
}
link_set_timer(l_ptr, cont_intv);
@@ -512,7 +525,7 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
}
l_ptr->state = WORKING_UNKNOWN;
l_ptr->fsm_msg_cnt = 0;
- tipc_link_send_proto_msg(l_ptr, STATE_MSG, 1, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, STATE_MSG, 1, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv / 4);
break;
@@ -522,7 +535,8 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
tipc_link_reset(l_ptr);
l_ptr->state = RESET_RESET;
l_ptr->fsm_msg_cnt = 0;
- tipc_link_send_proto_msg(l_ptr, ACTIVATE_MSG, 0, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
+ 0, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
break;
@@ -544,7 +558,8 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
tipc_link_reset(l_ptr);
l_ptr->state = RESET_RESET;
l_ptr->fsm_msg_cnt = 0;
- tipc_link_send_proto_msg(l_ptr, ACTIVATE_MSG, 0, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
+ 0, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
break;
@@ -554,14 +569,14 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
l_ptr->fsm_msg_cnt = 0;
l_ptr->checkpoint = l_ptr->next_in_no;
if (tipc_bclink_acks_missing(l_ptr->owner)) {
- tipc_link_send_proto_msg(l_ptr, STATE_MSG,
- 0, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, STATE_MSG,
+ 0, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
}
link_set_timer(l_ptr, cont_intv);
} else if (l_ptr->fsm_msg_cnt < l_ptr->abort_limit) {
- tipc_link_send_proto_msg(l_ptr, STATE_MSG,
- 1, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, STATE_MSG,
+ 1, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv / 4);
} else { /* Link has failed */
@@ -570,8 +585,8 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
tipc_link_reset(l_ptr);
l_ptr->state = RESET_UNKNOWN;
l_ptr->fsm_msg_cnt = 0;
- tipc_link_send_proto_msg(l_ptr, RESET_MSG,
- 0, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, RESET_MSG,
+ 0, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
}
@@ -591,24 +606,25 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
l_ptr->state = WORKING_WORKING;
l_ptr->fsm_msg_cnt = 0;
link_activate(l_ptr);
- tipc_link_send_proto_msg(l_ptr, STATE_MSG, 1, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, STATE_MSG, 1, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
if (l_ptr->owner->working_links == 1)
- tipc_link_send_sync(l_ptr);
+ tipc_link_sync_xmit(l_ptr);
link_set_timer(l_ptr, cont_intv);
break;
case RESET_MSG:
l_ptr->state = RESET_RESET;
l_ptr->fsm_msg_cnt = 0;
- tipc_link_send_proto_msg(l_ptr, ACTIVATE_MSG, 1, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
+ 1, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
break;
case STARTING_EVT:
- l_ptr->started = 1;
+ l_ptr->flags |= LINK_STARTED;
/* fall through */
case TIMEOUT_EVT:
- tipc_link_send_proto_msg(l_ptr, RESET_MSG, 0, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, RESET_MSG, 0, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
break;
@@ -626,16 +642,17 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
l_ptr->state = WORKING_WORKING;
l_ptr->fsm_msg_cnt = 0;
link_activate(l_ptr);
- tipc_link_send_proto_msg(l_ptr, STATE_MSG, 1, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, STATE_MSG, 1, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
if (l_ptr->owner->working_links == 1)
- tipc_link_send_sync(l_ptr);
+ tipc_link_sync_xmit(l_ptr);
link_set_timer(l_ptr, cont_intv);
break;
case RESET_MSG:
break;
case TIMEOUT_EVT:
- tipc_link_send_proto_msg(l_ptr, ACTIVATE_MSG, 0, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, ACTIVATE_MSG,
+ 0, 0, 0, 0, 0);
l_ptr->fsm_msg_cnt++;
link_set_timer(l_ptr, cont_intv);
break;
@@ -721,11 +738,11 @@ static void link_add_chain_to_outqueue(struct tipc_link *l_ptr,
}
/*
- * tipc_link_send_buf() is the 'full path' for messages, called from
- * inside TIPC when the 'fast path' in tipc_send_buf
+ * tipc_link_xmit() is the 'full path' for messages, called from
+ * inside TIPC when the 'fast path' in tipc_send_xmit
* has failed, and from link_send()
*/
-int tipc_link_send_buf(struct tipc_link *l_ptr, struct sk_buff *buf)
+int __tipc_link_xmit(struct tipc_link *l_ptr, struct sk_buff *buf)
{
struct tipc_msg *msg = buf_msg(buf);
u32 size = msg_size(msg);
@@ -753,7 +770,7 @@ int tipc_link_send_buf(struct tipc_link *l_ptr, struct sk_buff *buf)
/* Fragmentation needed ? */
if (size > max_packet)
- return link_send_long_buf(l_ptr, buf);
+ return tipc_link_frag_xmit(l_ptr, buf);
/* Packet can be queued or sent. */
if (likely(!link_congested(l_ptr))) {
@@ -797,11 +814,11 @@ int tipc_link_send_buf(struct tipc_link *l_ptr, struct sk_buff *buf)
}
/*
- * tipc_link_send(): same as tipc_link_send_buf(), but the link to use has
- * not been selected yet, and the the owner node is not locked
+ * tipc_link_xmit(): same as __tipc_link_xmit(), but the link to use
+ * has not been selected yet, and the the owner node is not locked
* Called by TIPC internal users, e.g. the name distributor
*/
-int tipc_link_send(struct sk_buff *buf, u32 dest, u32 selector)
+int tipc_link_xmit(struct sk_buff *buf, u32 dest, u32 selector)
{
struct tipc_link *l_ptr;
struct tipc_node *n_ptr;
@@ -813,7 +830,7 @@ int tipc_link_send(struct sk_buff *buf, u32 dest, u32 selector)
tipc_node_lock(n_ptr);
l_ptr = n_ptr->active_links[selector & 1];
if (l_ptr)
- res = tipc_link_send_buf(l_ptr, buf);
+ res = __tipc_link_xmit(l_ptr, buf);
else
kfree_skb(buf);
tipc_node_unlock(n_ptr);
@@ -825,14 +842,14 @@ int tipc_link_send(struct sk_buff *buf, u32 dest, u32 selector)
}
/*
- * tipc_link_send_sync - synchronize broadcast link endpoints.
+ * tipc_link_sync_xmit - synchronize broadcast link endpoints.
*
* Give a newly added peer node the sequence number where it should
* start receiving and acking broadcast packets.
*
* Called with node locked
*/
-static void tipc_link_send_sync(struct tipc_link *l)
+static void tipc_link_sync_xmit(struct tipc_link *l)
{
struct sk_buff *buf;
struct tipc_msg *msg;
@@ -849,14 +866,14 @@ static void tipc_link_send_sync(struct tipc_link *l)
}
/*
- * tipc_link_recv_sync - synchronize broadcast link endpoints.
+ * tipc_link_sync_rcv - synchronize broadcast link endpoints.
* Receive the sequence number where we should start receiving and
* acking broadcast packets from a newly added peer node, and open
* up for reception of such packets.
*
* Called with node locked
*/
-static void tipc_link_recv_sync(struct tipc_node *n, struct sk_buff *buf)
+static void tipc_link_sync_rcv(struct tipc_node *n, struct sk_buff *buf)
{
struct tipc_msg *msg = buf_msg(buf);
@@ -866,7 +883,7 @@ static void tipc_link_recv_sync(struct tipc_node *n, struct sk_buff *buf)
}
/*
- * tipc_link_send_names - send name table entries to new neighbor
+ * tipc_link_names_xmit - send name table entries to new neighbor
*
* Send routine for bulk delivery of name table messages when contact
* with a new neighbor occurs. No link congestion checking is performed
@@ -874,7 +891,7 @@ static void tipc_link_recv_sync(struct tipc_node *n, struct sk_buff *buf)
* small enough not to require fragmentation.
* Called without any locks held.
*/
-void tipc_link_send_names(struct list_head *message_list, u32 dest)
+void tipc_link_names_xmit(struct list_head *message_list, u32 dest)
{
struct tipc_node *n_ptr;
struct tipc_link *l_ptr;
@@ -909,13 +926,13 @@ void tipc_link_send_names(struct list_head *message_list, u32 dest)
}
/*
- * link_send_buf_fast: Entry for data messages where the
+ * tipc_link_xmit_fast: Entry for data messages where the
* destination link is known and the header is complete,
* inclusive total message length. Very time critical.
* Link is locked. Returns user data length.
*/
-static int link_send_buf_fast(struct tipc_link *l_ptr, struct sk_buff *buf,
- u32 *used_max_pkt)
+static int tipc_link_xmit_fast(struct tipc_link *l_ptr, struct sk_buff *buf,
+ u32 *used_max_pkt)
{
struct tipc_msg *msg = buf_msg(buf);
int res = msg_data_sz(msg);
@@ -931,18 +948,18 @@ static int link_send_buf_fast(struct tipc_link *l_ptr, struct sk_buff *buf,
else
*used_max_pkt = l_ptr->max_pkt;
}
- return tipc_link_send_buf(l_ptr, buf); /* All other cases */
+ return __tipc_link_xmit(l_ptr, buf); /* All other cases */
}
/*
- * tipc_link_send_sections_fast: Entry for messages where the
+ * tipc_link_iovec_xmit_fast: Entry for messages where the
* destination processor is known and the header is complete,
* except for total message length.
* Returns user data length or errno.
*/
-int tipc_link_send_sections_fast(struct tipc_port *sender,
- struct iovec const *msg_sect,
- unsigned int len, u32 destaddr)
+int tipc_link_iovec_xmit_fast(struct tipc_port *sender,
+ struct iovec const *msg_sect,
+ unsigned int len, u32 destaddr)
{
struct tipc_msg *hdr = &sender->phdr;
struct tipc_link *l_ptr;
@@ -968,8 +985,8 @@ again:
l_ptr = node->active_links[selector];
if (likely(l_ptr)) {
if (likely(buf)) {
- res = link_send_buf_fast(l_ptr, buf,
- &sender->max_pkt);
+ res = tipc_link_xmit_fast(l_ptr, buf,
+ &sender->max_pkt);
exit:
tipc_node_unlock(node);
read_unlock_bh(&tipc_net_lock);
@@ -995,8 +1012,8 @@ exit:
if ((msg_hdr_sz(hdr) + res) <= sender->max_pkt)
goto again;
- return link_send_sections_long(sender, msg_sect, len,
- destaddr);
+ return tipc_link_iovec_long_xmit(sender, msg_sect,
+ len, destaddr);
}
tipc_node_unlock(node);
}
@@ -1006,13 +1023,13 @@ exit:
if (buf)
return tipc_reject_msg(buf, TIPC_ERR_NO_NODE);
if (res >= 0)
- return tipc_port_reject_sections(sender, hdr, msg_sect,
- len, TIPC_ERR_NO_NODE);
+ return tipc_port_iovec_reject(sender, hdr, msg_sect, len,
+ TIPC_ERR_NO_NODE);
return res;
}
/*
- * link_send_sections_long(): Entry for long messages where the
+ * tipc_link_iovec_long_xmit(): Entry for long messages where the
* destination node is known and the header is complete,
* inclusive total message length.
* Link and bearer congestion status have been checked to be ok,
@@ -1025,9 +1042,9 @@ exit:
*
* Returns user data length or errno.
*/
-static int link_send_sections_long(struct tipc_port *sender,
- struct iovec const *msg_sect,
- unsigned int len, u32 destaddr)
+static int tipc_link_iovec_long_xmit(struct tipc_port *sender,
+ struct iovec const *msg_sect,
+ unsigned int len, u32 destaddr)
{
struct tipc_link *l_ptr;
struct tipc_node *node;
@@ -1146,8 +1163,8 @@ error:
} else {
reject:
kfree_skb_list(buf_chain);
- return tipc_port_reject_sections(sender, hdr, msg_sect,
- len, TIPC_ERR_NO_NODE);
+ return tipc_port_iovec_reject(sender, hdr, msg_sect,
+ len, TIPC_ERR_NO_NODE);
}
/* Append chain of fragments to send queue & send them */
@@ -1441,7 +1458,6 @@ void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
u32 seq_no;
u32 ackd;
u32 released = 0;
- int type;
head = head->next;
buf->next = NULL;
@@ -1463,9 +1479,9 @@ void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
if (unlikely(msg_non_seq(msg))) {
if (msg_user(msg) == LINK_CONFIG)
- tipc_disc_recv_msg(buf, b_ptr);
+ tipc_disc_rcv(buf, b_ptr);
else
- tipc_bclink_recv_pkt(buf);
+ tipc_bclink_rcv(buf);
continue;
}
@@ -1489,7 +1505,7 @@ void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
if ((n_ptr->block_setup & WAIT_PEER_DOWN) &&
msg_user(msg) == LINK_PROTOCOL &&
(msg_type(msg) == RESET_MSG ||
- msg_type(msg) == ACTIVATE_MSG) &&
+ msg_type(msg) == ACTIVATE_MSG) &&
!msg_redundant_link(msg))
n_ptr->block_setup &= ~WAIT_PEER_DOWN;
@@ -1508,7 +1524,6 @@ void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
while ((crs != l_ptr->next_out) &&
less_eq(buf_seqno(crs), ackd)) {
struct sk_buff *next = crs->next;
-
kfree_skb(crs);
crs = next;
released++;
@@ -1521,18 +1536,19 @@ void tipc_rcv(struct sk_buff *head, struct tipc_bearer *b_ptr)
/* Try sending any messages link endpoint has pending */
if (unlikely(l_ptr->next_out))
tipc_link_push_queue(l_ptr);
+
if (unlikely(!list_empty(&l_ptr->waiting_ports)))
tipc_link_wakeup_ports(l_ptr, 0);
+
if (unlikely(++l_ptr->unacked_window >= TIPC_MIN_LINK_WIN)) {
l_ptr->stats.sent_acks++;
- tipc_link_send_proto_msg(l_ptr, STATE_MSG, 0, 0, 0, 0, 0);
+ tipc_link_proto_xmit(l_ptr, STATE_MSG, 0, 0, 0, 0, 0);
}
- /* Now (finally!) process the incoming message */
-protocol_check:
+ /* Process the incoming packet */
if (unlikely(!link_working_working(l_ptr))) {
if (msg_user(msg) == LINK_PROTOCOL) {
- link_recv_proto_msg(l_ptr, buf);
+ tipc_link_proto_rcv(l_ptr, buf);
head = link_insert_deferred_queue(l_ptr, head);
tipc_node_unlock(n_ptr);
continue;
@@ -1561,67 +1577,65 @@ protocol_check:
l_ptr->next_in_no++;
if (unlikely(l_ptr->oldest_deferred_in))
head = link_insert_deferred_queue(l_ptr, head);
-deliver:
- if (likely(msg_isdata(msg))) {
- tipc_node_unlock(n_ptr);
- tipc_port_recv_msg(buf);
- continue;
+
+ /* Deliver packet/message to correct user: */
+ if (unlikely(msg_user(msg) == CHANGEOVER_PROTOCOL)) {
+ if (!tipc_link_tunnel_rcv(n_ptr, &buf)) {
+ tipc_node_unlock(n_ptr);
+ continue;
+ }
+ msg = buf_msg(buf);
+ } else if (msg_user(msg) == MSG_FRAGMENTER) {
+ int rc;
+
+ l_ptr->stats.recv_fragments++;
+ rc = tipc_link_frag_rcv(&l_ptr->reasm_head,
+ &l_ptr->reasm_tail,
+ &buf);
+ if (rc == LINK_REASM_COMPLETE) {
+ l_ptr->stats.recv_fragmented++;
+ msg = buf_msg(buf);
+ } else {
+