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rename thread_info to stack
[powerpc.git]
/
net
/
tipc
/
bcast.c
diff --git
a/net/tipc/bcast.c
b/net/tipc/bcast.c
index
1bb7570
..
e788017
100644
(file)
--- a/
net/tipc/bcast.c
+++ b/
net/tipc/bcast.c
@@
-1,6
+1,6
@@
/*
* net/tipc/bcast.c: TIPC broadcast code
/*
* net/tipc/bcast.c: TIPC broadcast code
- *
+ *
* Copyright (c) 2004-2006, Ericsson AB
* Copyright (c) 2004, Intel Corporation.
* Copyright (c) 2005, Wind River Systems
* Copyright (c) 2004-2006, Ericsson AB
* Copyright (c) 2004, Intel Corporation.
* Copyright (c) 2005, Wind River Systems
@@
-59,15
+59,15
@@
* Loss rate for incoming broadcast frames; used to test retransmission code.
* Set to N to cause every N'th frame to be discarded; 0 => don't discard any.
*/
* Loss rate for incoming broadcast frames; used to test retransmission code.
* Set to N to cause every N'th frame to be discarded; 0 => don't discard any.
*/
-
+
#define TIPC_BCAST_LOSS_RATE 0
/**
* struct bcbearer_pair - a pair of bearers used by broadcast link
* @primary: pointer to primary bearer
* @secondary: pointer to secondary bearer
#define TIPC_BCAST_LOSS_RATE 0
/**
* struct bcbearer_pair - a pair of bearers used by broadcast link
* @primary: pointer to primary bearer
* @secondary: pointer to secondary bearer
- *
- * Bearers must have same priority and same set of reachable destinations
+ *
+ * Bearers must have same priority and same set of reachable destinations
* to be paired.
*/
* to be paired.
*/
@@
-84,7
+84,7
@@
struct bcbearer_pair {
* @bpairs_temp: temporary array of bearer pairs used by tipc_bcbearer_sort()
* @remains: temporary node map used by tipc_bcbearer_send()
* @remains_new: temporary node map used tipc_bcbearer_send()
* @bpairs_temp: temporary array of bearer pairs used by tipc_bcbearer_sort()
* @remains: temporary node map used by tipc_bcbearer_send()
* @remains_new: temporary node map used tipc_bcbearer_send()
- *
+ *
* Note: The fields labelled "temporary" are incorporated into the bearer
* to avoid consuming potentially limited stack space through the use of
* large local variables within multicast routines. Concurrent access is
* Note: The fields labelled "temporary" are incorporated into the bearer
* to avoid consuming potentially limited stack space through the use of
* large local variables within multicast routines. Concurrent access is
@@
-104,7
+104,7
@@
struct bcbearer {
* struct bclink - link used for broadcast messages
* @link: (non-standard) broadcast link structure
* @node: (non-standard) node structure representing b'cast link's peer node
* struct bclink - link used for broadcast messages
* @link: (non-standard) broadcast link structure
* @node: (non-standard) node structure representing b'cast link's peer node
- *
+ *
* Handles sequence numbering, fragmentation, bundling, etc.
*/
* Handles sequence numbering, fragmentation, bundling, etc.
*/
@@
-125,7
+125,7
@@
char tipc_bclink_name[] = "multicast-link";
static u32 buf_seqno(struct sk_buff *buf)
{
return msg_seqno(buf_msg(buf));
static u32 buf_seqno(struct sk_buff *buf)
{
return msg_seqno(buf_msg(buf));
-}
+}
static u32 bcbuf_acks(struct sk_buff *buf)
{
static u32 bcbuf_acks(struct sk_buff *buf)
{
@@
-143,9
+143,9
@@
static void bcbuf_decr_acks(struct sk_buff *buf)
}
}
-/**
+/**
* bclink_set_gap - set gap according to contents of current deferred pkt queue
* bclink_set_gap - set gap according to contents of current deferred pkt queue
- *
+ *
* Called with 'node' locked, bc_lock unlocked
*/
* Called with 'node' locked, bc_lock unlocked
*/
@@
-159,14
+159,14
@@
static void bclink_set_gap(struct node *n_ptr)
n_ptr->bclink.gap_to = mod(buf_seqno(buf) - 1);
}
n_ptr->bclink.gap_to = mod(buf_seqno(buf) - 1);
}
-/**
+/**
* bclink_ack_allowed - test if ACK or NACK message can be sent at this moment
* bclink_ack_allowed - test if ACK or NACK message can be sent at this moment
- *
+ *
* This mechanism endeavours to prevent all nodes in network from trying
* to ACK or NACK at the same time.
* This mechanism endeavours to prevent all nodes in network from trying
* to ACK or NACK at the same time.
- *
+ *
* Note: TIPC uses a different trigger to distribute ACKs than it does to
* Note: TIPC uses a different trigger to distribute ACKs than it does to
- * distribute NACKs, but tries to use the same spacing (divide by 16).
+ * distribute NACKs, but tries to use the same spacing (divide by 16).
*/
static int bclink_ack_allowed(u32 n)
*/
static int bclink_ack_allowed(u32 n)
@@
-175,11
+175,11
@@
static int bclink_ack_allowed(u32 n)
}
}
-/**
+/**
* bclink_retransmit_pkt - retransmit broadcast packets
* @after: sequence number of last packet to *not* retransmit
* @to: sequence number of last packet to retransmit
* bclink_retransmit_pkt - retransmit broadcast packets
* @after: sequence number of last packet to *not* retransmit
* @to: sequence number of last packet to retransmit
- *
+ *
* Called with bc_lock locked
*/
* Called with bc_lock locked
*/
@@
-189,16
+189,16
@@
static void bclink_retransmit_pkt(u32 after, u32 to)
buf = bcl->first_out;
while (buf && less_eq(buf_seqno(buf), after)) {
buf = bcl->first_out;
while (buf && less_eq(buf_seqno(buf), after)) {
- buf = buf->next;
+ buf = buf->next;
}
tipc_link_retransmit(bcl, buf, mod(to - after));
}
}
tipc_link_retransmit(bcl, buf, mod(to - after));
}
-/**
+/**
* tipc_bclink_acknowledge - handle acknowledgement of broadcast packets
* @n_ptr: node that sent acknowledgement info
* @acked: broadcast sequence # that has been acknowledged
* tipc_bclink_acknowledge - handle acknowledgement of broadcast packets
* @n_ptr: node that sent acknowledgement info
* @acked: broadcast sequence # that has been acknowledged
- *
+ *
* Node is locked, bc_lock unlocked.
*/
* Node is locked, bc_lock unlocked.
*/
@@
-244,9
+244,9
@@
void tipc_bclink_acknowledge(struct node *n_ptr, u32 acked)
spin_unlock_bh(&bc_lock);
}
spin_unlock_bh(&bc_lock);
}
-/**
+/**
* bclink_send_ack - unicast an ACK msg
* bclink_send_ack - unicast an ACK msg
- *
+ *
* tipc_net_lock and node lock set
*/
* tipc_net_lock and node lock set
*/
@@
-258,9
+258,9
@@
static void bclink_send_ack(struct node *n_ptr)
tipc_link_send_proto_msg(l_ptr, STATE_MSG, 0, 0, 0, 0, 0);
}
tipc_link_send_proto_msg(l_ptr, STATE_MSG, 0, 0, 0, 0, 0);
}
-/**
+/**
* bclink_send_nack- broadcast a NACK msg
* bclink_send_nack- broadcast a NACK msg
- *
+ *
* tipc_net_lock and node lock set
*/
* tipc_net_lock and node lock set
*/
@@
-278,7
+278,7
@@
static void bclink_send_nack(struct node *n_ptr)
msg_init(msg, BCAST_PROTOCOL, STATE_MSG,
TIPC_OK, INT_H_SIZE, n_ptr->addr);
msg_set_mc_netid(msg, tipc_net_id);
msg_init(msg, BCAST_PROTOCOL, STATE_MSG,
TIPC_OK, INT_H_SIZE, n_ptr->addr);
msg_set_mc_netid(msg, tipc_net_id);
- msg_set_bcast_ack(msg, mod(n_ptr->bclink.last_in));
+ msg_set_bcast_ack(msg, mod(n_ptr->bclink.last_in));
msg_set_bcgap_after(msg, n_ptr->bclink.gap_after);
msg_set_bcgap_to(msg, n_ptr->bclink.gap_to);
msg_set_bcast_tag(msg, tipc_own_tag);
msg_set_bcgap_after(msg, n_ptr->bclink.gap_after);
msg_set_bcgap_to(msg, n_ptr->bclink.gap_to);
msg_set_bcast_tag(msg, tipc_own_tag);
@@
-292,17
+292,17
@@
static void bclink_send_nack(struct node *n_ptr)
bcl->stats.bearer_congs++;
}
bcl->stats.bearer_congs++;
}
- /*
+ /*
* Ensure we doesn't send another NACK msg to the node
* until 16 more deferred messages arrive from it
* (i.e. helps prevent all nodes from NACK'ing at same time)
*/
* Ensure we doesn't send another NACK msg to the node
* until 16 more deferred messages arrive from it
* (i.e. helps prevent all nodes from NACK'ing at same time)
*/
-
+
n_ptr->bclink.nack_sync = tipc_own_tag;
}
}
n_ptr->bclink.nack_sync = tipc_own_tag;
}
}
-/**
+/**
* tipc_bclink_check_gap - send a NACK if a sequence gap exists
*
* tipc_net_lock and node lock set
* tipc_bclink_check_gap - send a NACK if a sequence gap exists
*
* tipc_net_lock and node lock set
@@
-320,9
+320,9
@@
void tipc_bclink_check_gap(struct node *n_ptr, u32 last_sent)
bclink_send_nack(n_ptr);
}
bclink_send_nack(n_ptr);
}
-/**
+/**
* tipc_bclink_peek_nack - process a NACK msg meant for another node
* tipc_bclink_peek_nack - process a NACK msg meant for another node
- *
+ *
* Only tipc_net_lock set.
*/
* Only tipc_net_lock set.
*/
@@
-349,7
+349,7
@@
static void tipc_bclink_peek_nack(u32 dest, u32 sender_tag, u32 gap_after, u32 g
if (less_eq(my_to, gap_to))
n_ptr->bclink.gap_to = gap_after;
} else {
if (less_eq(my_to, gap_to))
n_ptr->bclink.gap_to = gap_after;
} else {
- /*
+ /*
* Expand gap if missing bufs not in deferred queue:
*/
struct sk_buff *buf = n_ptr->bclink.deferred_head;
* Expand gap if missing bufs not in deferred queue:
*/
struct sk_buff *buf = n_ptr->bclink.deferred_head;
@@
-371,7
+371,7
@@
static void tipc_bclink_peek_nack(u32 dest, u32 sender_tag, u32 gap_after, u32 g
}
/*
* Some nodes may send a complementary NACK now:
}
/*
* Some nodes may send a complementary NACK now:
- */
+ */
if (bclink_ack_allowed(sender_tag + 1)) {
if (n_ptr->bclink.gap_to != n_ptr->bclink.gap_after) {
bclink_send_nack(n_ptr);
if (bclink_ack_allowed(sender_tag + 1)) {
if (n_ptr->bclink.gap_to != n_ptr->bclink.gap_after) {
bclink_send_nack(n_ptr);
@@
-408,7
+408,7
@@
int tipc_bclink_send_msg(struct sk_buff *buf)
/**
* tipc_bclink_recv_pkt - receive a broadcast packet, and deliver upwards
/**
* tipc_bclink_recv_pkt - receive a broadcast packet, and deliver upwards
- *
+ *
* tipc_net_lock is read_locked, no other locks set
*/
* tipc_net_lock is read_locked, no other locks set
*/
@@
-425,7
+425,7
@@
void tipc_bclink_recv_pkt(struct sk_buff *buf)
msg_dbg(msg, "<BC<<<");
msg_dbg(msg, "<BC<<<");
- if (unlikely(!node || !tipc_node_is_up(node) || !node->bclink.supported ||
+ if (unlikely(!node || !tipc_node_is_up(node) || !node->bclink.supported ||
(msg_mc_netid(msg) != tipc_net_id))) {
buf_discard(buf);
return;
(msg_mc_netid(msg) != tipc_net_id))) {
buf_discard(buf);
return;
@@
-443,7
+443,7
@@
void tipc_bclink_recv_pkt(struct sk_buff *buf)
bclink_retransmit_pkt(msg_bcgap_after(msg),
msg_bcgap_to(msg));
bcl->owner->next = NULL;
bclink_retransmit_pkt(msg_bcgap_after(msg),
msg_bcgap_to(msg));
bcl->owner->next = NULL;
- spin_unlock_bh(&bc_lock);
+ spin_unlock_bh(&bc_lock);
} else {
tipc_bclink_peek_nack(msg_destnode(msg),
msg_bcast_tag(msg),
} else {
tipc_bclink_peek_nack(msg_destnode(msg),
msg_bcast_tag(msg),
@@
-547,10
+547,10
@@
u32 tipc_bclink_acks_missing(struct node *n_ptr)
/**
* tipc_bcbearer_send - send a packet through the broadcast pseudo-bearer
/**
* tipc_bcbearer_send - send a packet through the broadcast pseudo-bearer
- *
+ *
* Send through as many bearers as necessary to reach all nodes
* that support TIPC multicasting.
* Send through as many bearers as necessary to reach all nodes
* that support TIPC multicasting.
- *
+ *
* Returns 0 if packet sent successfully, non-zero if not
*/
* Returns 0 if packet sent successfully, non-zero if not
*/
@@
-581,7
+581,7
@@
static int tipc_bcbearer_send(struct sk_buff *buf,
send_count = 0;
/* Send buffer over bearers until all targets reached */
send_count = 0;
/* Send buffer over bearers until all targets reached */
-
+
bcbearer->remains = tipc_cltr_bcast_nodes;
for (bp_index = 0; bp_index < MAX_BEARERS; bp_index++) {
bcbearer->remains = tipc_cltr_bcast_nodes;
for (bp_index = 0; bp_index < MAX_BEARERS; bp_index++) {
@@
-615,7
+615,7
@@
update:
bcbearer->remains = bcbearer->remains_new;
}
bcbearer->remains = bcbearer->remains_new;
}
-
+
/* Unable to reach all targets */
bcbearer->bearer.publ.blocked = 1;
/* Unable to reach all targets */
bcbearer->bearer.publ.blocked = 1;
@@
-682,7
+682,7
@@
void tipc_bcbearer_sort(void)
/**
* tipc_bcbearer_push - resolve bearer congestion
/**
* tipc_bcbearer_push - resolve bearer congestion
- *
+ *
* Forces bclink to push out any unsent packets, until all packets are gone
* or congestion reoccurs.
* No locks set when function called
* Forces bclink to push out any unsent packets, until all packets are gone
* or congestion reoccurs.
* No locks set when function called
@@
-714,27
+714,27
@@
int tipc_bclink_stats(char *buf, const u32 buf_size)
spin_lock_bh(&bc_lock);
tipc_printf(&pb, "Link <%s>\n"
spin_lock_bh(&bc_lock);
tipc_printf(&pb, "Link <%s>\n"
- " Window:%u packets\n",
+ " Window:%u packets\n",
bcl->name, bcl->queue_limit[0]);
bcl->name, bcl->queue_limit[0]);
- tipc_printf(&pb, " RX packets:%u fragments:%u/%u bundles:%u/%u\n",
+ tipc_printf(&pb, " RX packets:%u fragments:%u/%u bundles:%u/%u\n",
bcl->stats.recv_info,
bcl->stats.recv_fragments,
bcl->stats.recv_fragmented,
bcl->stats.recv_bundles,
bcl->stats.recv_bundled);
bcl->stats.recv_info,
bcl->stats.recv_fragments,
bcl->stats.recv_fragmented,
bcl->stats.recv_bundles,
bcl->stats.recv_bundled);
- tipc_printf(&pb, " TX packets:%u fragments:%u/%u bundles:%u/%u\n",
+ tipc_printf(&pb, " TX packets:%u fragments:%u/%u bundles:%u/%u\n",
bcl->stats.sent_info,
bcl->stats.sent_fragments,
bcl->stats.sent_info,
bcl->stats.sent_fragments,
- bcl->stats.sent_fragmented,
+ bcl->stats.sent_fragmented,
bcl->stats.sent_bundles,
bcl->stats.sent_bundled);
bcl->stats.sent_bundles,
bcl->stats.sent_bundled);
- tipc_printf(&pb, " RX naks:%u defs:%u dups:%u\n",
+ tipc_printf(&pb, " RX naks:%u defs:%u dups:%u\n",
bcl->stats.recv_nacks,
bcl->stats.recv_nacks,
- bcl->stats.deferred_recv,
+ bcl->stats.deferred_recv,
bcl->stats.duplicates);
bcl->stats.duplicates);
- tipc_printf(&pb, " TX naks:%u acks:%u dups:%u\n",
- bcl->stats.sent_nacks,
- bcl->stats.sent_acks,
+ tipc_printf(&pb, " TX naks:%u acks:%u dups:%u\n",
+ bcl->stats.sent_nacks,
+ bcl->stats.sent_acks,
bcl->stats.retransmitted);
tipc_printf(&pb, " Congestion bearer:%u link:%u Send queue max:%u avg:%u\n",
bcl->stats.bearer_congs,
bcl->stats.retransmitted);
tipc_printf(&pb, " Congestion bearer:%u link:%u Send queue max:%u avg:%u\n",
bcl->stats.bearer_congs,
@@
-774,11
+774,11
@@
int tipc_bclink_set_queue_limits(u32 limit)
int tipc_bclink_init(void)
{
int tipc_bclink_init(void)
{
- bcbearer = k
m
alloc(sizeof(*bcbearer), GFP_ATOMIC);
- bclink = k
m
alloc(sizeof(*bclink), GFP_ATOMIC);
+ bcbearer = k
z
alloc(sizeof(*bcbearer), GFP_ATOMIC);
+ bclink = k
z
alloc(sizeof(*bclink), GFP_ATOMIC);
if (!bcbearer || !bclink) {
nomem:
if (!bcbearer || !bclink) {
nomem:
- warn("Multicast link creation failed, no memory\n");
+ warn("Multicast link creation failed, no memory\n");
kfree(bcbearer);
bcbearer = NULL;
kfree(bclink);
kfree(bcbearer);
bcbearer = NULL;
kfree(bclink);
@@
-786,19
+786,17
@@
int tipc_bclink_init(void)
return -ENOMEM;
}
return -ENOMEM;
}
- memset(bcbearer, 0, sizeof(struct bcbearer));
INIT_LIST_HEAD(&bcbearer->bearer.cong_links);
bcbearer->bearer.media = &bcbearer->media;
bcbearer->media.send_msg = tipc_bcbearer_send;
sprintf(bcbearer->media.name, "tipc-multicast");
bcl = &bclink->link;
INIT_LIST_HEAD(&bcbearer->bearer.cong_links);
bcbearer->bearer.media = &bcbearer->media;
bcbearer->media.send_msg = tipc_bcbearer_send;
sprintf(bcbearer->media.name, "tipc-multicast");
bcl = &bclink->link;
- memset(bclink, 0, sizeof(struct bclink));
INIT_LIST_HEAD(&bcl->waiting_ports);
bcl->next_out_no = 1;
spin_lock_init(&bclink->node.lock);
bcl->owner = &bclink->node;
INIT_LIST_HEAD(&bcl->waiting_ports);
bcl->next_out_no = 1;
spin_lock_init(&bclink->node.lock);
bcl->owner = &bclink->node;
-
bcl->max_pkt = MAX_PKT_DEFAULT_MCAST;
+ bcl->max_pkt = MAX_PKT_DEFAULT_MCAST;
tipc_link_set_queue_limits(bcl, BCLINK_WIN_DEFAULT);
bcl->b_ptr = &bcbearer->bearer;
bcl->state = WORKING_WORKING;
tipc_link_set_queue_limits(bcl, BCLINK_WIN_DEFAULT);
bcl->b_ptr = &bcbearer->bearer;
bcl->state = WORKING_WORKING;