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authorLinus Torvalds <torvalds@g5.osdl.org>2006-06-26 10:08:13 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-26 10:08:13 -0700
commit61a46dc9d1c10d07a2ed6b7d346b868803b52506 (patch)
treeac81648c6aa7315f42d1d17455ddf7f09d14e6b6 /net
parentb78709cfd4387c15a9894748bcada8a4ca75c561 (diff)
parent8070b2b1ecbeb5437c92c33b4dcea1d8d80399ee (diff)
downloadblackbird-op-linux-61a46dc9d1c10d07a2ed6b7d346b868803b52506.tar.gz
blackbird-op-linux-61a46dc9d1c10d07a2ed6b7d346b868803b52506.zip
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (42 commits) [IOAT]: Do not dereference THIS_MODULE directly to set unsafe. [NETROM]: Fix possible null pointer dereference. [NET] netpoll: break recursive loop in netpoll rx path [NET] netpoll: don't spin forever sending to stopped queues [IRDA]: add some IBM think pads [ATM]: atm/mpc.c warning fix [NET]: skb_find_text ignores to argument [NET]: make net/core/dev.c:netdev_nit static [NET]: Fix GSO problems in dev_hard_start_xmit() [NET]: Fix CHECKSUM_HW GSO problems. [TIPC]: Fix incorrect correction to discovery timer frequency computation. [TIPC]: Get rid of dynamically allocated arrays in broadcast code. [TIPC]: Fixed link switchover bugs [TIPC]: Enhanced & cleaned up system messages; fixed 2 obscure memory leaks. [TIPC]: First phase of assert() cleanup [TIPC]: Disallow config operations that aren't supported in certain modes. [TIPC]: Fixed memory leak in tipc_link_send() when destination is unreachable [TIPC]: Added missing warning for out-of-memory condition [TIPC]: Withdrawing all names from nameless port now returns success, not error [TIPC]: Optimized argument validation done by connect(). ...
Diffstat (limited to 'net')
-rw-r--r--net/atm/mpc.c3
-rw-r--r--net/core/dev.c5
-rw-r--r--net/core/netpoll.c36
-rw-r--r--net/core/skbuff.c5
-rw-r--r--net/ipv4/tcp.c22
-rw-r--r--net/netrom/nr_route.c12
-rw-r--r--net/tipc/bcast.c79
-rw-r--r--net/tipc/bcast.h2
-rw-r--r--net/tipc/bearer.c70
-rw-r--r--net/tipc/cluster.c22
-rw-r--r--net/tipc/config.c85
-rw-r--r--net/tipc/core.c7
-rw-r--r--net/tipc/core.h21
-rw-r--r--net/tipc/discover.c13
-rw-r--r--net/tipc/eth_media.c29
-rw-r--r--net/tipc/link.c217
-rw-r--r--net/tipc/name_distr.c30
-rw-r--r--net/tipc/name_table.c203
-rw-r--r--net/tipc/node.c78
-rw-r--r--net/tipc/node.h2
-rw-r--r--net/tipc/node_subscr.c15
-rw-r--r--net/tipc/port.c41
-rw-r--r--net/tipc/ref.c31
-rw-r--r--net/tipc/socket.c100
-rw-r--r--net/tipc/subscr.c18
-rw-r--r--net/tipc/zone.c19
26 files changed, 706 insertions, 459 deletions
diff --git a/net/atm/mpc.c b/net/atm/mpc.c
index a48a5d580408..5fe77df00186 100644
--- a/net/atm/mpc.c
+++ b/net/atm/mpc.c
@@ -1113,10 +1113,9 @@ static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_clien
static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc)
{
- unsigned char *ip;
-
uint32_t dst_ip = msg->content.in_info.in_dst_ip;
in_cache_entry *entry = mpc->in_ops->get(dst_ip, mpc);
+
dprintk("mpoa: (%s) MPOA_res_reply_rcvd: ip %u.%u.%u.%u\n", mpc->dev->name, NIPQUAD(dst_ip));
ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", mpc->dev->name, entry);
if(entry == NULL){
diff --git a/net/core/dev.c b/net/core/dev.c
index ea2469398bd5..f1c52cbd6ef7 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -230,7 +230,7 @@ extern void netdev_unregister_sysfs(struct net_device *);
* For efficiency
*/
-int netdev_nit;
+static int netdev_nit;
/*
* Add a protocol ID to the list. Now that the input handler is
@@ -1325,9 +1325,12 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
nskb->next = NULL;
rc = dev->hard_start_xmit(nskb, dev);
if (unlikely(rc)) {
+ nskb->next = skb->next;
skb->next = nskb;
return rc;
}
+ if (unlikely(netif_queue_stopped(dev) && skb->next))
+ return NETDEV_TX_BUSY;
} while (skb->next);
skb->destructor = DEV_GSO_CB(skb)->destructor;
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 9cb781830380..471da451cd48 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -54,6 +54,7 @@ static atomic_t trapped;
sizeof(struct iphdr) + sizeof(struct ethhdr))
static void zap_completion_queue(void);
+static void arp_reply(struct sk_buff *skb);
static void queue_process(void *p)
{
@@ -153,6 +154,22 @@ static void poll_napi(struct netpoll *np)
}
}
+static void service_arp_queue(struct netpoll_info *npi)
+{
+ struct sk_buff *skb;
+
+ if (unlikely(!npi))
+ return;
+
+ skb = skb_dequeue(&npi->arp_tx);
+
+ while (skb != NULL) {
+ arp_reply(skb);
+ skb = skb_dequeue(&npi->arp_tx);
+ }
+ return;
+}
+
void netpoll_poll(struct netpoll *np)
{
if(!np->dev || !netif_running(np->dev) || !np->dev->poll_controller)
@@ -163,6 +180,8 @@ void netpoll_poll(struct netpoll *np)
if (np->dev->poll)
poll_napi(np);
+ service_arp_queue(np->dev->npinfo);
+
zap_completion_queue();
}
@@ -279,14 +298,10 @@ static void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb)
* network drivers do not expect to be called if the queue is
* stopped.
*/
- if (netif_queue_stopped(np->dev)) {
- netif_tx_unlock(np->dev);
- netpoll_poll(np);
- udelay(50);
- continue;
- }
+ status = NETDEV_TX_BUSY;
+ if (!netif_queue_stopped(np->dev))
+ status = np->dev->hard_start_xmit(skb, np->dev);
- status = np->dev->hard_start_xmit(skb, np->dev);
netif_tx_unlock(np->dev);
/* success */
@@ -446,7 +461,9 @@ int __netpoll_rx(struct sk_buff *skb)
int proto, len, ulen;
struct iphdr *iph;
struct udphdr *uh;
- struct netpoll *np = skb->dev->npinfo->rx_np;
+ struct netpoll_info *npi = skb->dev->npinfo;
+ struct netpoll *np = npi->rx_np;
+
if (!np)
goto out;
@@ -456,7 +473,7 @@ int __netpoll_rx(struct sk_buff *skb)
/* check if netpoll clients need ARP */
if (skb->protocol == __constant_htons(ETH_P_ARP) &&
atomic_read(&trapped)) {
- arp_reply(skb);
+ skb_queue_tail(&npi->arp_tx, skb);
return 1;
}
@@ -651,6 +668,7 @@ int netpoll_setup(struct netpoll *np)
npinfo->poll_owner = -1;
npinfo->tries = MAX_RETRIES;
spin_lock_init(&npinfo->rx_lock);
+ skb_queue_head_init(&npinfo->arp_tx);
} else
npinfo = ndev->npinfo;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 8e5044ba3ab6..6edbb90cbcec 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -1739,12 +1739,15 @@ unsigned int skb_find_text(struct sk_buff *skb, unsigned int from,
unsigned int to, struct ts_config *config,
struct ts_state *state)
{
+ unsigned int ret;
+
config->get_next_block = skb_ts_get_next_block;
config->finish = skb_ts_finish;
skb_prepare_seq_read(skb, from, to, TS_SKB_CB(state));
- return textsearch_find(config, state);
+ ret = textsearch_find(config, state);
+ return (ret <= to - from ? ret : UINT_MAX);
}
/**
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 0e029c4e2903..c04176be7ed1 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2166,7 +2166,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int sg)
if (!pskb_may_pull(skb, thlen))
goto out;
- oldlen = ~htonl(skb->len);
+ oldlen = (u16)~skb->len;
__skb_pull(skb, thlen);
segs = skb_segment(skb, sg);
@@ -2174,7 +2174,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int sg)
goto out;
len = skb_shinfo(skb)->gso_size;
- delta = csum_add(oldlen, htonl(thlen + len));
+ delta = htonl(oldlen + (thlen + len));
skb = segs;
th = skb->h.th;
@@ -2183,10 +2183,10 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int sg)
do {
th->fin = th->psh = 0;
- if (skb->ip_summed == CHECKSUM_NONE) {
- th->check = csum_fold(csum_partial(
- skb->h.raw, thlen, csum_add(skb->csum, delta)));
- }
+ th->check = ~csum_fold(th->check + delta);
+ if (skb->ip_summed != CHECKSUM_HW)
+ th->check = csum_fold(csum_partial(skb->h.raw, thlen,
+ skb->csum));
seq += len;
skb = skb->next;
@@ -2196,11 +2196,11 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int sg)
th->cwr = 0;
} while (skb->next);
- if (skb->ip_summed == CHECKSUM_NONE) {
- delta = csum_add(oldlen, htonl(skb->tail - skb->h.raw));
- th->check = csum_fold(csum_partial(
- skb->h.raw, thlen, csum_add(skb->csum, delta)));
- }
+ delta = htonl(oldlen + (skb->tail - skb->h.raw) + skb->data_len);
+ th->check = ~csum_fold(th->check + delta);
+ if (skb->ip_summed != CHECKSUM_HW)
+ th->check = csum_fold(csum_partial(skb->h.raw, thlen,
+ skb->csum));
out:
return segs;
diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c
index b3b9097c87c7..c11737f472d6 100644
--- a/net/netrom/nr_route.c
+++ b/net/netrom/nr_route.c
@@ -725,15 +725,17 @@ void nr_link_failed(ax25_cb *ax25, int reason)
struct nr_node *nr_node = NULL;
spin_lock_bh(&nr_neigh_list_lock);
- nr_neigh_for_each(s, node, &nr_neigh_list)
+ nr_neigh_for_each(s, node, &nr_neigh_list) {
if (s->ax25 == ax25) {
nr_neigh_hold(s);
nr_neigh = s;
break;
}
+ }
spin_unlock_bh(&nr_neigh_list_lock);
- if (nr_neigh == NULL) return;
+ if (nr_neigh == NULL)
+ return;
nr_neigh->ax25 = NULL;
ax25_cb_put(ax25);
@@ -743,11 +745,13 @@ void nr_link_failed(ax25_cb *ax25, int reason)
return;
}
spin_lock_bh(&nr_node_list_lock);
- nr_node_for_each(nr_node, node, &nr_node_list)
+ nr_node_for_each(nr_node, node, &nr_node_list) {
nr_node_lock(nr_node);
- if (nr_node->which < nr_node->count && nr_node->routes[nr_node->which].neighbour == nr_neigh)
+ if (nr_node->which < nr_node->count &&
+ nr_node->routes[nr_node->which].neighbour == nr_neigh)
nr_node->which++;
nr_node_unlock(nr_node);
+ }
spin_unlock_bh(&nr_node_list_lock);
nr_neigh_put(nr_neigh);
}
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c
index 2c4ecbe50082..54128040a124 100644
--- a/net/tipc/bcast.c
+++ b/net/tipc/bcast.c
@@ -49,13 +49,19 @@
#include "name_table.h"
#include "bcast.h"
-
#define MAX_PKT_DEFAULT_MCAST 1500 /* bcast link max packet size (fixed) */
#define BCLINK_WIN_DEFAULT 20 /* bcast link window size (default) */
#define BCLINK_LOG_BUF_SIZE 0
+/*
+ * 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
@@ -75,7 +81,14 @@ struct bcbearer_pair {
* @bearer: (non-standard) broadcast bearer structure
* @media: (non-standard) broadcast media structure
* @bpairs: array of bearer pairs
- * @bpairs_temp: array of bearer pairs used during creation of "bpairs"
+ * @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
+ * prevented through use of the spinlock "bc_lock".
*/
struct bcbearer {
@@ -83,6 +96,8 @@ struct bcbearer {
struct media media;
struct bcbearer_pair bpairs[MAX_BEARERS];
struct bcbearer_pair bpairs_temp[TIPC_MAX_LINK_PRI + 1];
+ struct node_map remains;
+ struct node_map remains_new;
};
/**
@@ -165,21 +180,18 @@ static int bclink_ack_allowed(u32 n)
* @after: sequence number of last packet to *not* retransmit
* @to: sequence number of last packet to retransmit
*
- * Called with 'node' locked, bc_lock unlocked
+ * Called with bc_lock locked
*/
static void bclink_retransmit_pkt(u32 after, u32 to)
{
struct sk_buff *buf;
- spin_lock_bh(&bc_lock);
buf = bcl->first_out;
while (buf && less_eq(buf_seqno(buf), after)) {
buf = buf->next;
}
- if (buf != NULL)
- tipc_link_retransmit(bcl, buf, mod(to - after));
- spin_unlock_bh(&bc_lock);
+ tipc_link_retransmit(bcl, buf, mod(to - after));
}
/**
@@ -346,8 +358,10 @@ static void tipc_bclink_peek_nack(u32 dest, u32 sender_tag, u32 gap_after, u32 g
for (; buf; buf = buf->next) {
u32 seqno = buf_seqno(buf);
- if (mod(seqno - prev) != 1)
+ if (mod(seqno - prev) != 1) {
buf = NULL;
+ break;
+ }
if (seqno == gap_after)
break;
prev = seqno;
@@ -399,7 +413,10 @@ int tipc_bclink_send_msg(struct sk_buff *buf)
*/
void tipc_bclink_recv_pkt(struct sk_buff *buf)
-{
+{
+#if (TIPC_BCAST_LOSS_RATE)
+ static int rx_count = 0;
+#endif
struct tipc_msg *msg = buf_msg(buf);
struct node* node = tipc_node_find(msg_prevnode(msg));
u32 next_in;
@@ -420,9 +437,13 @@ void tipc_bclink_recv_pkt(struct sk_buff *buf)
tipc_node_lock(node);
tipc_bclink_acknowledge(node, msg_bcast_ack(msg));
tipc_node_unlock(node);
+ spin_lock_bh(&bc_lock);
bcl->stats.recv_nacks++;
+ bcl->owner->next = node; /* remember requestor */
bclink_retransmit_pkt(msg_bcgap_after(msg),
msg_bcgap_to(msg));
+ bcl->owner->next = NULL;
+ spin_unlock_bh(&bc_lock);
} else {
tipc_bclink_peek_nack(msg_destnode(msg),
msg_bcast_tag(msg),
@@ -433,6 +454,14 @@ void tipc_bclink_recv_pkt(struct sk_buff *buf)
return;
}
+#if (TIPC_BCAST_LOSS_RATE)
+ if (++rx_count == TIPC_BCAST_LOSS_RATE) {
+ rx_count = 0;
+ buf_discard(buf);
+ return;
+ }
+#endif
+
tipc_node_lock(node);
receive:
deferred = node->bclink.deferred_head;
@@ -531,12 +560,8 @@ static int tipc_bcbearer_send(struct sk_buff *buf,
{
static int send_count = 0;
- struct node_map *remains;
- struct node_map *remains_new;
- struct node_map *remains_tmp;
int bp_index;
int swap_time;
- int err;
/* Prepare buffer for broadcasting (if first time trying to send it) */
@@ -557,9 +582,7 @@ static int tipc_bcbearer_send(struct sk_buff *buf,
/* Send buffer over bearers until all targets reached */
- remains = kmalloc(sizeof(struct node_map), GFP_ATOMIC);
- remains_new = kmalloc(sizeof(struct node_map), GFP_ATOMIC);
- *remains = tipc_cltr_bcast_nodes;
+ bcbearer->remains = tipc_cltr_bcast_nodes;
for (bp_index = 0; bp_index < MAX_BEARERS; bp_index++) {
struct bearer *p = bcbearer->bpairs[bp_index].primary;
@@ -568,8 +591,8 @@ static int tipc_bcbearer_send(struct sk_buff *buf,
if (!p)
break; /* no more bearers to try */
- tipc_nmap_diff(remains, &p->nodes, remains_new);
- if (remains_new->count == remains->count)
+ tipc_nmap_diff(&bcbearer->remains, &p->nodes, &bcbearer->remains_new);
+ if (bcbearer->remains_new.count == bcbearer->remains.count)
continue; /* bearer pair doesn't add anything */
if (!p->publ.blocked &&
@@ -587,27 +610,17 @@ swap:
bcbearer->bpairs[bp_index].primary = s;
bcbearer->bpairs[bp_index].secondary = p;
update:
- if (remains_new->count == 0) {
- err = TIPC_OK;
- goto out;
- }
+ if (bcbearer->remains_new.count == 0)
+ return TIPC_OK;
- /* swap map */
- remains_tmp = remains;
- remains = remains_new;
- remains_new = remains_tmp;
+ bcbearer->remains = bcbearer->remains_new;
}
/* Unable to reach all targets */
bcbearer->bearer.publ.blocked = 1;
bcl->stats.bearer_congs++;
- err = ~TIPC_OK;
-
- out:
- kfree(remains_new);
- kfree(remains);
- return err;
+ return ~TIPC_OK;
}
/**
@@ -765,7 +778,7 @@ int tipc_bclink_init(void)
bclink = kmalloc(sizeof(*bclink), GFP_ATOMIC);
if (!bcbearer || !bclink) {
nomem:
- warn("Memory squeeze; Failed to create multicast link\n");
+ warn("Multicast link creation failed, no memory\n");
kfree(bcbearer);
bcbearer = NULL;
kfree(bclink);
diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h
index 0e3be2ab3307..b243d9d495f0 100644
--- a/net/tipc/bcast.h
+++ b/net/tipc/bcast.h
@@ -180,7 +180,7 @@ static inline void tipc_port_list_add(struct port_list *pl_ptr, u32 port)
if (!item->next) {
item->next = kmalloc(sizeof(*item), GFP_ATOMIC);
if (!item->next) {
- warn("Memory squeeze: multicast destination port list is incomplete\n");
+ warn("Incomplete multicast delivery, no memory\n");
return;
}
item->next->next = NULL;
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index e213a8e54855..4fa24b5e8914 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -112,39 +112,42 @@ int tipc_register_media(u32 media_type,
goto exit;
if (!media_name_valid(name)) {
- warn("Media registration error: illegal name <%s>\n", name);
+ warn("Media <%s> rejected, illegal name\n", name);
goto exit;
}
if (!bcast_addr) {
- warn("Media registration error: no broadcast address supplied\n");
+ warn("Media <%s> rejected, no broadcast address\n", name);
goto exit;
}
if ((bearer_priority < TIPC_MIN_LINK_PRI) &&
(bearer_priority > TIPC_MAX_LINK_PRI)) {
- warn("Media registration error: priority %u\n", bearer_priority);
+ warn("Media <%s> rejected, illegal priority (%u)\n", name,
+ bearer_priority);
goto exit;
}
if ((link_tolerance < TIPC_MIN_LINK_TOL) ||
(link_tolerance > TIPC_MAX_LINK_TOL)) {
- warn("Media registration error: tolerance %u\n", link_tolerance);
+ warn("Media <%s> rejected, illegal tolerance (%u)\n", name,
+ link_tolerance);
goto exit;
}
media_id = media_count++;
if (media_id >= MAX_MEDIA) {
- warn("Attempt to register more than %u media\n", MAX_MEDIA);
+ warn("Media <%s> rejected, media limit reached (%u)\n", name,
+ MAX_MEDIA);
media_count--;
goto exit;
}
for (i = 0; i < media_id; i++) {
if (media_list[i].type_id == media_type) {
- warn("Attempt to register second media with type %u\n",
+ warn("Media <%s> rejected, duplicate type (%u)\n", name,
media_type);
media_count--;
goto exit;
}
if (!strcmp(name, media_list[i].name)) {
- warn("Attempt to re-register media name <%s>\n", name);
+ warn("Media <%s> rejected, duplicate name\n", name);
media_count--;
goto exit;
}
@@ -283,6 +286,9 @@ static struct bearer *bearer_find(const char *name)
struct bearer *b_ptr;
u32 i;
+ if (tipc_mode != TIPC_NET_MODE)
+ return NULL;
+
for (i = 0, b_ptr = tipc_bearers; i < MAX_BEARERS; i++, b_ptr++) {
if (b_ptr->active && (!strcmp(b_ptr->publ.name, name)))
return b_ptr;
@@ -475,26 +481,33 @@ int tipc_enable_bearer(const char *name, u32 bcast_scope, u32 priority)
u32 i;
int res = -EINVAL;
- if (tipc_mode != TIPC_NET_MODE)
+ if (tipc_mode != TIPC_NET_MODE) {
+ warn("Bearer <%s> rejected, not supported in standalone mode\n",
+ name);
return -ENOPROTOOPT;
-
- if (!bearer_name_validate(name, &b_name) ||
- !tipc_addr_domain_valid(bcast_scope) ||
- !in_scope(bcast_scope, tipc_own_addr))
+ }
+ if (!bearer_name_validate(name, &b_name)) {
+ warn("Bearer <%s> rejected, illegal name\n", name);
return -EINVAL;
-
+ }
+ if (!tipc_addr_domain_valid(bcast_scope) ||
+ !in_scope(bcast_scope, tipc_own_addr)) {
+ warn("Bearer <%s> rejected, illegal broadcast scope\n", name);
+ return -EINVAL;
+ }
if ((priority < TIPC_MIN_LINK_PRI ||
priority > TIPC_MAX_LINK_PRI) &&
- (priority != TIPC_MEDIA_LINK_PRI))
+ (priority != TIPC_MEDIA_LINK_PRI)) {
+ warn("Bearer <%s> rejected, illegal priority\n", name);
return -EINVAL;
+ }
write_lock_bh(&tipc_net_lock);
- if (!tipc_bearers)
- goto failed;
m_ptr = media_find(b_name.media_name);
if (!m_ptr) {
- warn("No media <%s>\n", b_name.media_name);
+ warn("Bearer <%s> rejected, media <%s> not registered\n", name,
+ b_name.media_name);
goto failed;
}
@@ -510,23 +523,24 @@ restart:
continue;
}
if (!strcmp(name, tipc_bearers[i].publ.name)) {
- warn("Bearer <%s> already enabled\n", name);
+ warn("Bearer <%s> rejected, already enabled\n", name);
goto failed;
}
if ((tipc_bearers[i].priority == priority) &&
(++with_this_prio > 2)) {
if (priority-- == 0) {
- warn("Third bearer <%s> with priority %u, unable to lower to %u\n",
- name, priority + 1, priority);
+ warn("Bearer <%s> rejected, duplicate priority\n",
+ name);
goto failed;
}
- warn("Third bearer <%s> with priority %u, lowering to %u\n",
+ warn("Bearer <%s> priority adjustment required %u->%u\n",
name, priority + 1, priority);
goto restart;
}
}
if (bearer_id >= MAX_BEARERS) {
- warn("Attempt to enable more than %d bearers\n", MAX_BEARERS);
+ warn("Bearer <%s> rejected, bearer limit reached (%u)\n",
+ name, MAX_BEARERS);
goto failed;
}
@@ -536,7 +550,7 @@ restart:
strcpy(b_ptr->publ.name, name);
res = m_ptr->enable_bearer(&b_ptr->publ);
if (res) {
- warn("Failed to enable bearer <%s>\n", name);
+ warn("Bearer <%s> rejected, enable failure (%d)\n", name, -res);
goto failed;
}
@@ -573,9 +587,6 @@ int tipc_block_bearer(const char *name)
struct link *l_ptr;
struct link *temp_l_ptr;
- if (tipc_mode != TIPC_NET_MODE)
- return -ENOPROTOOPT;
-
read_lock_bh(&tipc_net_lock);
b_ptr = bearer_find(name);
if (!b_ptr) {
@@ -584,6 +595,7 @@ int tipc_block_bearer(const char *name)
return -EINVAL;
}
+ info("Blocking bearer <%s>\n", name);
spin_lock_bh(&b_ptr->publ.lock);
b_ptr->publ.blocked = 1;
list_for_each_entry_safe(l_ptr, temp_l_ptr, &b_ptr->links, link_list) {
@@ -595,7 +607,6 @@ int tipc_block_bearer(const char *name)
}
spin_unlock_bh(&b_ptr->publ.lock);
read_unlock_bh(&tipc_net_lock);
- info("Blocked bearer <%s>\n", name);
return TIPC_OK;
}
@@ -611,15 +622,13 @@ static int bearer_disable(const char *name)
struct link *l_ptr;
struct link *temp_l_ptr;
- if (tipc_mode != TIPC_NET_MODE)
- return -ENOPROTOOPT;
-
b_ptr = bearer_find(name);
if (!b_ptr) {
warn("Attempt to disable unknown bearer <%s>\n", name);
return -EINVAL;
}
+ info("Disabling bearer <%s>\n", name);
tipc_disc_stop_link_req(b_ptr->link_req);
spin_lock_bh(&b_ptr->publ.lock);
b_ptr->link_req = NULL;
@@ -635,7 +644,6 @@ static int bearer_disable(const char *name)
tipc_link_delete(l_ptr);
}
spin_unlock_bh(&b_ptr->publ.lock);
- info("Disabled bearer <%s>\n", name);
memset(b_ptr, 0, sizeof(struct bearer));
return TIPC_OK;
}
diff --git a/net/tipc/cluster.c b/net/tipc/cluster.c
index 1aed81584e96..1dcb6940e338 100644
--- a/net/tipc/cluster.c
+++ b/net/tipc/cluster.c
@@ -60,8 +60,10 @@ struct cluster *tipc_cltr_create(u32 addr)
int alloc;
c_ptr = (struct cluster *)kmalloc(sizeof(*c_ptr), GFP_ATOMIC);
- if (c_ptr == NULL)
+ if (c_ptr == NULL) {
+ warn("Cluster creation failure, no memory\n");
return NULL;
+ }
memset(c_ptr, 0, sizeof(*c_ptr));
c_ptr->addr = tipc_addr(tipc_zone(addr), tipc_cluster(addr), 0);
@@ -70,30 +72,32 @@ struct cluster *tipc_cltr_create(u32 addr)
else
max_nodes = tipc_max_nodes + 1;
alloc = sizeof(void *) * (max_nodes + 1);
+
c_ptr->nodes = (struct node **)kmalloc(alloc, GFP_ATOMIC);
if (c_ptr->nodes == NULL) {
+ warn("Cluster creation failure, no memory for node area\n");
kfree(c_ptr);
return NULL;
}
- memset(c_ptr->nodes, 0, alloc);
+ memset(c_ptr->nodes, 0, alloc);
+
if (in_own_cluster(addr))
tipc_local_nodes = c_ptr->nodes;
c_ptr->highest_slave = LOWEST_SLAVE - 1;
c_ptr->highest_node = 0;
z_ptr = tipc_zone_find(tipc_zone(addr));
- if (z_ptr == NULL) {
+ if (!z_ptr) {
z_ptr = tipc_zone_create(addr);
}
- if (z_ptr != NULL) {
- tipc_zone_attach_cluster(z_ptr, c_ptr);
- c_ptr->owner = z_ptr;
- }
- else {
+ if (!z_ptr) {
+ kfree(c_ptr->nodes);
kfree(c_ptr);
- c_ptr = NULL;
+ return NULL;
}
+ tipc_zone_attach_cluster(z_ptr, c_ptr);
+ c_ptr->owner = z_ptr;
return c_ptr;
}
diff --git a/net/tipc/config.c b/net/tipc/config.c
index 48b5de2dbe60..3ec502fac8c3 100644
--- a/net/tipc/config.c
+++ b/net/tipc/config.c
@@ -291,13 +291,22 @@ static struct sk_buff *cfg_set_own_addr(void)
if (!tipc_addr_node_valid(addr))
return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
" (node address)");
- if (tipc_own_addr)
+ if (tipc_mode == TIPC_NET_MODE)
return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
" (cannot change node address once assigned)");
+ tipc_own_addr = addr;
+
+ /*
+ * Must release all spinlocks before calling start_net() because
+ * Linux version of TIPC calls eth_media_start() which calls
+ * register_netdevice_notifier() which may block!
+ *
+ * Temporarily releasing the lock should be harmless for non-Linux TIPC,
+ * but Linux version of eth_media_start() should really be reworked
+ * so that it can be called with spinlocks held.
+ */
spin_unlock_bh(&config_lock);
- tipc_core_stop_net();
- tipc_own_addr = addr;
tipc_core_start_net();
spin_lock_bh(&config_lock);
return tipc_cfg_reply_none();
@@ -350,50 +359,21 @@ static struct sk_buff *cfg_set_max_subscriptions(void)
static struct sk_buff *cfg_set_max_ports(void)
{
- int orig_mode;
u32 value;
if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))
return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
value = *(u32 *)TLV_DATA(req_tlv_area);
value = ntohl(value);
+ if (value == tipc_max_ports)
+ return tipc_cfg_reply_none();
if (value != delimit(value, 127, 65535))
return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
" (max ports must be 127-65535)");
-
- if (value == tipc_max_ports)
- return tipc_cfg_reply_none();
-
- if (atomic_read(&tipc_user_count) > 2)
+ if (tipc_mode != TIPC_NOT_RUNNING)
return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
- " (cannot change max ports while TIPC users exist)");
-
- spin_unlock_bh(&config_lock);
- orig_mode = tipc_get_mode();
- if (orig_mode == TIPC_NET_MODE)
- tipc_core_stop_net();
- tipc_core_stop();
+ " (cannot change max ports while TIPC is active)");
tipc_max_ports = value;
- tipc_core_start();
- if (orig_mode == TIPC_NET_MODE)
- tipc_core_start_net();
- spin_lock_bh(&config_lock);
- return tipc_cfg_reply_none();
-}
-
-static struct sk_buff *set_net_max(int value, int *parameter)
-{
- int orig_mode;
-
- if (value != *parameter) {
- orig_mode = tipc_get_mode();
- if (orig_mode == TIPC_NET_MODE)
- tipc_core_stop_net();
- *parameter = value;
- if (orig_mode == TIPC_NET_MODE)
- tipc_core_start_net();
- }
-
return tipc_cfg_reply_none();
}
@@ -405,10 +385,16 @@ static struct sk_buff *cfg_set_max_zones(void)
return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
value = *(u32 *)TLV_DATA(req_tlv_area);
value = ntohl(value);
+ if (value == tipc_max_zones)
+ return tipc_cfg_reply_none();
if (value != delimit(value, 1, 255))
return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
" (max zones must be 1-255)");
- return set_net_max(value, &tipc_max_zones);
+ if (tipc_mode == TIPC_NET_MODE)
+ return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
+ " (cannot change max zones once TIPC has joined a network)");
+ tipc_max_zones = value;
+ return tipc_cfg_reply_none();
}
static struct sk_buff *cfg_set_max_clusters(void)
@@ -419,8 +405,8 @@ static struct sk_buff *cfg_set_max_clusters(void)
return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
value = *(u32 *)TLV_DATA(req_tlv_area);
value = ntohl(value);
- if (value != 1)
- return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
+ if (value != delimit(value, 1, 1))
+ return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
" (max clusters fixed at 1)");
return tipc_cfg_reply_none();
}
@@ -433,10 +419,16 @@ static struct sk_buff *cfg_set_max_nodes(void)
return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
value = *(u32 *)TLV_DATA(req_tlv_area);
value = ntohl(value);
+ if (value == tipc_max_nodes)
+ return tipc_cfg_reply_none();
if (value != delimit(value, 8, 2047))
return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
" (max nodes must be 8-2047)");
- return set_net_max(value, &tipc_max_nodes);
+ if (tipc_mode == TIPC_NET_MODE)
+ return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
+ " (cannot change max nodes once TIPC has joined a network)");
+ tipc_max_nodes = value;
+ return tipc_cfg_reply_none();
}
static struct sk_buff *cfg_set_max_slaves(void)
@@ -461,15 +453,16 @@ static struct sk_buff *cfg_set_netid(void)
return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
value = *(u32 *)TLV_DATA(req_tlv_area);
value = ntohl(value);
+ if (value == tipc_net_id)
+ return tipc_cfg_reply_none();
if (value != delimit(value, 1, 9999))
return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
" (network id must be 1-9999)");
-
- if (tipc_own_addr)
+ if (tipc_mode == TIPC_NET_MODE)
return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
- " (cannot change network id once part of network)");
-
- return set_net_max(value, &tipc_net_id);
+ " (cannot change network id once TIPC has joined a network)");
+ tipc_net_id = value;
+ return tipc_cfg_reply_none();
}
struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area,
@@ -649,7 +642,7 @@ static void cfg_named_msg_event(void *userdata,
if ((size < sizeof(*req_hdr)) ||
(size != TCM_ALIGN(ntohl(req_hdr->tcm_len))) ||
(ntohs(req_hdr->tcm_flags) != TCM_F_REQUEST)) {
- warn("discarded invalid configuration message\n");
+ warn("Invalid configuration message discarded\n");
return;
}
diff --git a/net/tipc/core.c b/net/tipc/core.c
index 3d0a8ee4e1d3..5003acb15919 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -2,7 +2,7 @@
* net/tipc/core.c: TIPC module code
*
* Copyright (c) 2003-2006, Ericsson AB
- * Copyright (c) 2005, Wind River Systems
+ * Copyright (c) 2005-2006, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -57,7 +57,7 @@ void tipc_socket_stop(void);
int tipc_netlink_start(void);
void tipc_netlink_stop(void);
-#define MOD_NAME "tipc_start: "
+#define TIPC_MOD_VER "1.6.1"
#ifndef CONFIG_TIPC_ZONES
#define CONFIG_TIPC_ZONES 3
@@ -198,7 +198,7 @@ static int __init tipc_init(void)
tipc_max_publications = 10000;
tipc_max_subscriptions = 2000;
tipc_max_ports = delimit(CONFIG_TIPC_PORTS, 127, 65536);
- tipc_max_zones = delimit(CONFIG_TIPC_ZONES, 1, 511);
+ tipc_max_zones = delimit(CONFIG_TIPC_ZONES, 1, 255);
tipc_max_clusters = delimit(CONFIG_TIPC_CLUSTERS, 1, 1);
tipc_max_nodes = delimit(CONFIG_TIPC_NODES, 8, 2047);
tipc_max_slaves = delimit(CONFIG_TIPC_SLAVE_NODES, 0, 2047);
@@ -224,6 +224,7 @@ module_exit(tipc_exit);
MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(TIPC_MOD_VER);
/* Native TIPC API for kernel-space applications (see tipc.h) */
diff --git a/net/tipc/core.h b/net/tipc/core.h
index 1f2e8b27a13f..86f54f3512f1 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -2,7 +2,7 @@
* net/tipc/core.h: Include file for TIPC global declarations
*
* Copyright (c) 2005-2006, Ericsson AB
- * Copyright (c) 2005, Wind River Systems
+ * Copyright (c) 2005-2006, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -111,10 +111,6 @@ void tipc_dump(struct print_buf*,const char *fmt, ...);
#else
-#ifndef DBG_OUTPUT
-#define DBG_OUTPUT NULL
-#endif
-
/*
* TIPC debug support not included:
* - system messages are printed to system console
@@ -129,6 +125,19 @@ void tipc_dump(struct print_buf*,const char *fmt, ...);
#define msg_dbg(msg,txt) do {} while (0)
#define dump(fmt,arg...) do {} while (0)
+
+/*
+ * TIPC_OUTPUT is defined to be the system console, while DBG_OUTPUT is
+ * the null print buffer. Thes ensures that any system or debug messages
+ * that are generated without using the above macros are handled correctly.
+ */
+
+#undef TIPC_OUTPUT
+#define TIPC_OUTPUT TIPC_CONS
+
+#undef DBG_OUTPUT
+#define DBG_OUTPUT NULL
+
#endif
@@ -309,7 +318,7 @@ static inline struct sk_buff *buf_acquire(u32 size)
* buf_discard - frees a TIPC message buffer
* @skb: message buffer
*
- * Frees a new buffer. If passed NULL, just returns.
+ * Frees a message buffer. If passed NULL, just returns.
*/
static inline void buf_discard(struct sk_buff *skb)
diff --git a/net/tipc/discover.c b/net/tipc/discover.c
index 92601385e5f5..2b8441203120 100644
--- a/net/tipc/discover.c
+++ b/net/tipc/discover.c
@@ -2,7 +2,7 @@
* net/tipc/discover.c
*
* Copyright (c) 2003-2006, Ericsson AB
- * Copyright (c) 2005, Wind River Systems
+ * Copyright (c) 2005-2006, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -176,7 +176,6 @@ void tipc_disc_recv_msg(struct sk_buff *buf)
n_ptr = tipc_node_create(orig);
}
if (n_ptr == NULL) {
- warn("Memory squeeze; Failed to create node\n");
return;
}
spin_lock_bh(&n_ptr->lock);
@@ -191,10 +190,8 @@ void tipc_disc_recv_msg(struct sk_buff *buf)
}
addr = &link->media_addr;
if (memcmp(addr, &media_addr, sizeof(*addr))) {
- char addr_string[16];
-
- warn("New bearer address for %s\n",
- addr_string_fill(addr_string, orig));
+ warn("Resetting link <%s>, peer interface address changed\n",
+ link->name);
memcpy(addr, &media_addr, sizeof(*addr));
tipc_link_reset(link);
}
@@ -270,8 +267,8 @@ static void disc_timeout(struct link_req *req)
/* leave timer interval "as is" if already at a "normal" rate */
} else {
req->timer_intv *= 2;
- if (req->timer_intv > TIPC_LINK_REQ_SLOW)
- req->timer_intv = TIPC_LINK_REQ_SLOW;
+ if (req->timer_intv > TIPC_LINK_REQ_FAST)
+ req->timer_intv = TIPC_LINK_REQ_FAST;
if ((req->timer_intv == TIPC_LINK_REQ_FAST) &&
(req->bearer->nodes.count))
req->timer_intv = TIPC_LINK_REQ_SLOW;
diff --git a/net/tipc/eth_media.c b/net/tipc/eth_media.c
index 7a252785f727..682da4a28041 100644
--- a/net/tipc/eth_media.c
+++ b/net/tipc/eth_media.c
@@ -2,7 +2,7 @@
* net/tipc/eth_media.c: Ethernet bearer support for TIPC
*
* Copyright (c) 2001-2006, Ericsson AB
- * Copyright (c) 2005, Wind River Systems
+ * Copyright (c) 2005-2006, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -98,17 +98,19 @@ static int recv_msg(struct sk_buff *buf, struct net_device *dev,
u32 size;
if (likely(eb_ptr->bearer)) {
- size = msg_size((struct tipc_msg *)buf->data);
- skb_trim(buf, size);
- if (likely(buf->len == size)) {
- buf->next = NULL;
- tipc_recv_msg(buf, eb_ptr->bearer);
- } else {
- kfree_skb(buf);
+ if (likely(!dev->promiscuity) ||
+ !memcmp(buf->mac.raw,dev->dev_addr,ETH_ALEN) ||
+ !memcmp(buf->mac.raw,dev->broadcast,ETH_ALEN)) {
+ size = msg_size((struct tipc_msg *)buf->data);
+ skb_trim(buf, size);
+ if (likely(buf->len == size)) {
+ buf->next = NULL;
+ tipc_recv_msg(buf, eb_ptr->bearer);
+ return TIPC_OK;
+ }
}
- } else {
- kfree_skb(buf);
}
+ kfree_skb(buf);
return TIPC_OK;
}
@@ -125,8 +127,7 @@ static int enable_bearer(struct tipc_bearer *tb_ptr)
/* Find device with specified name */
- while (dev && dev->name &&
- (memcmp(dev->name, driver_name, strlen(dev->name)))) {
+ while (dev && dev->name && strncmp(dev->name, driver_name, IFNAMSIZ)) {
dev = dev->next;
}
if (!dev)
@@ -252,7 +253,9 @@ int tipc_eth_media_start(void)
if (eth_started)
return -EINVAL;
- memset(&bcast_addr, 0xff, sizeof(bcast_addr));
+ bcast_addr.type = htonl(TIPC_MEDIA_TYPE_ETH);
+ memset(&bcast_addr.dev_addr, 0xff, ETH_ALEN);
+
memset(eth_bearers, 0, sizeof(eth_bearers));
res = tipc_register_media(TIPC_MEDIA_TYPE_ETH, "eth",
diff --git a/net/tipc/link.c b/net/tipc/link.c
index 784b24b6d102..d64658053746 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -419,7 +419,7 @@ struct link *tipc_link_create(struct bearer *b_ptr, const u32 peer,
l_ptr = (struct link *)kmalloc(sizeof(*l_ptr), GFP_ATOMIC);
if (!l_ptr) {
- warn("Memory squeeze; Failed to create link\n");
+ warn("Link creation failed, no memory\n");
return NULL;
}
memset(l_ptr, 0, sizeof(*l_ptr));
@@ -469,7 +469,7 @@ struct link *tipc_link_create(struct bearer *b_ptr, const u32 peer,
if (!pb) {
kfree(l_ptr);
- warn("Memory squeeze; Failed to create link\n");
+ warn("Link creation failed, no memory for print buffer\n");
return NULL;
}
tipc_printbuf_init(&l_ptr->print_buf, pb, LINK_LOG_BUF_SIZE);
@@ -574,7 +574,6 @@ void tipc_link_wakeup_ports(struct link *l_ptr, int all)
break;
list_del_init(&p_ptr->wait_list);
p_ptr->congested_link = NULL;
- assert(p_ptr->wakeup);
spin_lock_bh(p_ptr->publ.lock);
p_ptr->publ.congested = 0;
p_ptr->wakeup(&p_ptr->publ);
@@ -691,6 +690,7 @@ void tipc_link_reset(struct link *l_ptr)
struct sk_buff *buf;
u32 prev_state = l_ptr->state;
u32 checkpoint = l_ptr->next_in_no;
+ int was_active_link = tipc_link_is_active(l_ptr);
msg_set_session(l_ptr->pmsg, msg_session(l_ptr->pmsg) + 1);
@@ -712,7 +712,7 @@ void tipc_link_reset(struct link *l_ptr)
tipc_printf(TIPC_CONS, "\nReset link <%s>\n", l_ptr->name);
dbg_link_dump();
#endif
- if (tipc_node_has_active_links(l_ptr->owner) &&
+ if (was_active_link && tipc_node_has_active_links(l_ptr->owner) &&
l_ptr->owner->permit_changeover) {
l_ptr->reset_checkpoint = checkpoint;
l_ptr->exp_msg_count = START_CHANGEOVER;
@@ -755,7 +755,7 @@ void tipc_link_reset(struct link *l_ptr)
static void link_activate(struct link *l_ptr)
{
- l_ptr->next_in_no = 1;
+ l_ptr->next_in_no = l_ptr->stats.recv_info = 1;
tipc_node_link_up(l_ptr->owner, l_ptr);
tipc_bearer_add_dest(l_ptr->b_ptr, l_ptr->addr);
link_send_event(tipc_cfg_link_event, l_ptr, 1);
@@ -820,6 +820,8 @@ static void link_state_event(struct link *l_ptr, unsigned event)
break;
case RESET_MSG:
dbg_link("RES -> RR\n");
+ info("Resetting link <%s>, requested by peer\n",
+ l_ptr->name);
tipc_link_reset(l_ptr);
l_ptr->state = RESET_RESET;
l_ptr->fsm_msg_cnt = 0;
@@ -844,6 +846,8 @@ static void link_state_event(struct link *l_ptr, unsigned event)
break;
case RESET_MSG:
dbg_link("RES -> RR\n");
+ info("Resetting link <%s>, requested by peer "
+ "while probing\n", l_ptr->name);
tipc_link_reset(l_ptr);
l_ptr->state = RESET_RESET;
l_ptr->fsm_msg_cnt = 0;
@@ -875,6 +879,8 @@ static void link_state_event(struct link *l_ptr, unsigned event)
} else { /* Link has failed */
dbg_link("-> RU (%u probes unanswered)\n",
l_ptr->fsm_msg_cnt);
+ warn("Resetting link <%s>, peer not responding\n",
+ l_ptr->name);
tipc_link_reset(l_ptr);
l_ptr->state = RESET_UNKNOWN;
l_ptr->fsm_msg_cnt = 0;
@@ -1050,7 +1056,7 @@ int tipc_link_send_buf(struct link *l_ptr, struct sk_buff *buf)
msg_dbg(msg, "TIPC: Congestion, throwing away\n");
buf_discard(buf);
if (imp > CONN_MANAGER) {
- warn("Resetting <%s>, send queue full", l_ptr->name);
+ warn("Resetting link <%s>, send queue full", l_ptr->name);
tipc_link_reset(l_ptr);
}
return dsz;
@@ -1135,9 +1141,13 @@ int tipc_link_send(struct sk_buff *buf, u32 dest, u32 selector)
if (n_ptr) {
tipc_node_lock(n_ptr);
l_ptr = n_ptr->active_links[selector & 1];
- dbg("tipc_link_send: found link %x for dest %x\n", l_ptr, dest);
if (l_ptr) {
+ dbg("tipc_link_send: found link %x for dest %x\n", l_ptr, dest);
res = tipc_link_send_buf(l_ptr, buf);
+ } else {
+ dbg("Attempt to send msg to unreachable node:\n");
+ msg_dbg(buf_msg(buf),">>>");
+ buf_discard(buf);
}
tipc_node_unlock(n_ptr);
} else {
@@ -1242,8 +1252,6 @@ int tipc_link_send_sections_fast(struct port *sender,
int res;
u32 selector = msg_origport(hdr) & 1;
- assert(destaddr != tipc_own_addr);
-
again:
/*
* Try building message using port's max_pkt hint.
@@ -1604,40 +1612,121 @@ void tipc_link_push_queue(struct link *l_ptr)
tipc_bearer_schedule(l_ptr->b_ptr, l_ptr);
}
+static void link_reset_all(unsigned long addr)
+{
+ struct node *n_ptr;
+ char addr_string[16];
+ u32 i;
+
+ read_lock_bh(&tipc_net_lock);
+ n_ptr = tipc_node_find((u32)addr);
+ if (!n_ptr) {
+ read_unlock_bh(&tipc_net_lock);
+ return; /* node no longer exists */
+ }
+
+ tipc_node_lock(n_ptr);
+
+ warn("Resetting all links to %s\n",
+ addr_string_fill(addr_string, n_ptr->addr));
+
+ for (i = 0; i < MAX_BEARERS; i++) {
+ if (n_ptr->links[i]) {
+ link_print(n_ptr->links[i], TIPC_OUTPUT,
+ "Resetting link\n");
+ tipc_link_reset(n_ptr->links[i]);
+ }
+ }
+
+ tipc_node_unlock(n_ptr);
+ read_unlock_bh(&tipc_net_lock);
+}
+
+static void link_retransmit_failure(struct link *l_ptr, struct sk_buff *buf)
+{
+ struct tipc_msg *msg = buf_msg(buf);
+
+ warn("Retransmission failure on link <%s>\n", l_ptr->name);
+ tipc_msg_print(TIPC_OUTPUT, msg, ">RETR-FAIL>");
+
+ if (l_ptr->addr) {
+
+ /* Handle failure on standard link */
+
+ link_print(l_ptr, TIPC_OUTPUT, "Resetting link\n");
+ tipc_link_reset(l_ptr);
+
+ } else {
+
+ /* Handle failure on broadcast link */
+
+ struct node *n_ptr;
+ char addr_string[16];
+
+ tipc_printf(TIPC_OUTPUT, "Msg seq number: %u, ", msg_seqno(msg));
+ tipc_printf(TIPC_OUTPUT, "Outstanding acks: %u\n", (u32)TIPC_SKB_CB(buf)->handle);
+
+ n_ptr = l_ptr->owner->next;
+ tipc_node_lock(n_ptr);
+
+ addr_string_fill(addr_string, n_ptr->addr);
+ tipc_printf(TIPC_OUTPUT, "Multicast link info for %s\n", addr_string);
+ tipc_printf(TIPC_OUTPUT, "Supported: %d, ", n_ptr->bclink.supported);
+ tipc_printf(TIPC_OUTPUT, "Acked: %u\n", n_ptr->bclink.acked);
+ tipc_printf(TIPC_OUTPUT, "Last in: %u, ", n_ptr->bclink.last_in);
+ tipc_printf(TIPC_OUTPUT, "Gap after: %u, ", n_ptr->bclink.gap_after);
+ tipc_printf(TIPC_OUTPUT, "Gap to: %u\n", n_ptr->bclink.gap_to);
+ tipc_printf(TIPC_OUTPUT, "Nack sync: %u\n\n", n_ptr->bclink.nack_sync);
+
+ tipc_k_signal((Handler)link_reset_all, (unsigned long)n_ptr->addr);
+
+ tipc_node_unlock(n_ptr);
+
+ l_ptr->stale_count = 0;
+ }
+}
+
void tipc_link_retransmit(struct link *l_ptr, struct sk_buff *buf,
u32 retransmits)
{
struct tipc_msg *msg;
+ if (!buf)
+ return;
+
+ msg = buf_msg(buf);
+
dbg("Retransmitting %u in link %x\n", retransmits, l_ptr);
- if (tipc_bearer_congested(l_ptr->b_ptr, l_ptr) && buf && !skb_cloned(buf)) {
- msg_dbg(buf_msg(buf), ">NO_RETR->BCONG>");
- dbg_print_link(l_ptr, " ");
- l_ptr->retransm_queue_head = msg_seqno(buf_msg(buf));
- l_ptr->retransm_queue_size = retransmits;
- return;
+ if (tipc_bearer_congested(l_ptr->b_ptr, l_ptr)) {
+ if (!skb_cloned(buf)) {
+ msg_dbg(msg, ">NO_RETR->BCONG>");
+ dbg_print_link(l_ptr, " ");
+ l_ptr->retransm_queue_head = msg_seqno(msg);
+ l_ptr->retransm_queue_size = retransmits;
+ return;
+ } else {
+ /* Don't retransmit if driver already has the buffer */
+ }
+ } else {
+ /* Detect repeated retransmit failures on uncongested bearer */
+
+ if (l_ptr->last_retransmitted == msg_seqno(msg)) {
+ if (++l_ptr->stale_count > 100) {
+ link_retransmit_failure(l_ptr, buf);
+ return;
+ }
+ } else {
+ l_ptr->last_retransmitted = msg_seqno(msg);
+ l_ptr->stale_count = 1;
+ }
}
+
while (retransmits && (buf != l_ptr->next_out) && buf && !skb_cloned(buf)) {
msg = buf_msg(buf);
msg_set_ack(msg, mod(l_ptr->next_in_no - 1));
msg_set_bcast_ack(msg, l_ptr->owner->bclink.last_in);
if (tipc_bearer_send(l_ptr->b_ptr, buf, &l_ptr->media_addr)) {
- /* Catch if retransmissions fail repeatedly: */
- if (l_ptr->last_retransmitted == msg_seqno(msg)) {
- if (++l_ptr->stale_count > 100) {
- tipc_msg_print(TIPC_CONS, buf_msg(buf), ">RETR>");
- info("...Retransmitted %u times\n",
- l_ptr->stale_count);
- link_print(l_ptr, TIPC_CONS, "Resetting Link\n");
- tipc_link_reset(l_ptr);
- break;
- }
- } else {
- l_ptr->stale_count = 0;
- }
- l_ptr->last_retransmitted = msg_seqno(msg);
-
msg_dbg(buf_msg(buf), ">RETR>");
buf = buf->next;
retransmits--;
@@ -1650,6 +1739,7 @@ void tipc_link_retransmit(struct link *l_ptr, struct sk_buff *buf,
return;
}
}
+
l_ptr->retransm_queue_head = l_ptr->retransm_queue_size = 0;
}
@@ -1720,6 +1810,11 @@ void tipc_recv_msg(struct sk_buff *head, struct tipc_bearer *tb_ptr)
link_recv_non_seq(buf);
continue;
}
+
+ if (unlikely(!msg_short(msg) &&
+ (msg_destnode(msg) != tipc_own_addr)))
+ goto cont;
+
n_ptr = tipc_node_find(msg_prevnode(msg));
if (unlikely(!n_ptr))
goto cont;
@@ -2140,7 +2235,7 @@ static void link_recv_proto_msg(struct link *l_ptr, struct sk_buff *buf)
if (msg_linkprio(msg) &&
(msg_linkprio(msg) != l_ptr->priority)) {
- warn("Changing prio <%s>: %u->%u\n",
+ warn("Resetting link <%s>, priority change %u->%u\n",
l_ptr->name, l_ptr->priority, msg_linkprio(msg));
l_ptr->priority = msg_linkprio(msg);
tipc_link_reset(l_ptr); /* Enforce change to take effect */
@@ -2209,17 +2304,22 @@ void tipc_link_tunnel(struct link *l_ptr,
u32 length = msg_size(msg);
tunnel = l_ptr->owner->active_links[selector & 1];
- if (!tipc_link_is_up(tunnel))
+ if (!tipc_link_is_up(tunnel)) {
+ warn("Link changeover error, "
+ "tunnel link no longer available\n");
return;
+ }
msg_set_size(tunnel_hdr, length + INT_H_SIZE);
buf = buf_acquire(length + INT_H_SIZE);
- if (!buf)
+ if (!buf) {
+ warn("Link changeover error, "
+ "unable to send tunnel msg\n");
return;
+ }
memcpy(buf->data, (unchar *)tunnel_hdr, INT_H_SIZE);
memcpy(buf->data + INT_H_SIZE, (unchar *)msg, length);
dbg("%c->%c:", l_ptr->b_ptr->net_plane, tunnel->b_ptr->net_plane);
msg_dbg(buf_msg(buf), ">SEND>");
- assert(tunnel);
tipc_link_send_buf(tunnel, buf);
}
@@ -2235,23 +2335,27 @@ void tipc_link_changeover(struct link *l_ptr)
u32 msgcount = l_ptr->out_queue_size;
struct sk_buff *crs = l_ptr->first_out;
struct link *tunnel = l_ptr->owner->active_links[0];
- int split_bundles = tipc_node_has_redundant_links(l_ptr->owner);
struct tipc_msg tunnel_hdr;
+ int split_bundles;
if (!tunnel)
return;
- if (!l_ptr->owner->permit_changeover)
+ if (!l_ptr->owner->permit_changeover) {
+ warn("Link changeover error, "
+ "peer did not permit changeover\n");
return;
+ }
msg_init(&tunnel_hdr, CHANGEOVER_PROTOCOL,
ORIGINAL_MSG, TIPC_OK, INT_H_SIZE, l_ptr->addr);
msg_set_bearer_id(&tunnel_hdr, l_ptr->peer_bearer_id);
msg_set_msgcnt(&tunnel_hdr, msgcount);
+ dbg("Link changeover requires %u tunnel messages\n", msgcount);
+
if (!l_ptr->first_out) {
struct sk_buff *buf;
- assert(!msgcount);
buf = buf_acquire(INT_H_SIZE);
if (buf) {
memcpy(buf->data, (unchar *)&tunnel_hdr, INT_H_SIZE);
@@ -2261,10 +2365,15 @@ void tipc_link_changeover(struct link *l_ptr)
msg_dbg(&tunnel_hdr, "EMPTY>SEND>");
tipc_link_send_buf(tunnel, buf);
} else {
- warn("Memory squeeze; link changeover failed\n");
+ warn("Link changeover error, "
+ "unable to send changeover msg\n");
}
return;
}
+
+ split_bundles = (l_ptr->owner->active_links[0] !=
+ l_ptr->owner->active_links[1]);
+
while (crs) {
struct tipc_msg *msg = buf_msg(crs);
@@ -2310,7 +2419,8 @@ void tipc_link_send_duplicate(struct link *l_ptr, struct link *tunnel)
msg_set_size(&tunnel_hdr, length + INT_H_SIZE);
outbuf = buf_acquire(length + INT_H_SIZE);
if (outbuf == NULL) {
- warn("Memory squeeze; buffer duplication failed\n");
+ warn("Link changeover error, "
+ "unable to send duplicate msg\n");
return;
}
memcpy(outbuf->data, (unchar *)&tunnel_hdr, INT_H_SIZE);
@@ -2364,11 +2474,15 @@ static int link_recv_changeover_msg(struct link **l_ptr,
u32 msg_count = msg_msgcnt(tunnel_msg);
dest_link = (*l_ptr)->owner->links[msg_bearer_id(tunnel_msg)];
- assert(dest_link != *l_ptr);
if (!dest_link) {
msg_dbg(tunnel_msg, "NOLINK/<REC<");
goto exit;
}
+ if (dest_link == *l_ptr) {
+ err("Unexpected changeover message on link <%s>\n",
+ (*l_ptr)->name);
+ goto exit;
+ }
dbg("%c<-%c:", dest_link->b_ptr->net_plane,
(*l_ptr)->b_ptr->net_plane);
*l_ptr = dest_link;
@@ -2381,7 +2495,7 @@ static int link_recv_changeover_msg(struct link **l_ptr,
}
*buf = buf_extract(tunnel_buf,INT_H_SIZE);
if (*buf == NULL) {
- warn("Memory squeeze; failed to extract msg\n");
+ warn("Link changeover error, duplicate msg dropped\n");
goto exit;
}
msg_dbg(tunnel_msg, "TNL<REC<");
@@ -2393,13 +2507,17 @@ static int link_recv_changeover_msg(struct link **l_ptr,
if (tipc_link_is_up(dest_link)) {
msg_dbg(tunnel_msg, "UP/FIRST/<REC<");
+ info("Resetting link <%s>, changeover initiated by peer\n",
+ dest_link->name);
tipc_link_reset(dest_link);
dest_link->exp_msg_count = msg_count;
+ dbg("Expecting %u tunnelled messages\n", msg_count);
if (!msg_count)
goto exit;
} else if (dest_link->exp_msg_count == START_CHANGEOVER) {
msg_dbg(tunnel_msg, "BLK/FIRST/<REC<");
dest_link->exp_msg_count = msg_count;
+ dbg("Expecting %u tunnelled messages\n", msg_count);
if (!msg_count)
goto exit;
}
@@ -2407,6 +2525,8 @@ static int link_recv_changeover_msg(struct link **l_ptr,
/* Receive original message */
if (dest_link->exp_msg_count == 0) {
+ warn("Link switchover error, "
+ "got too many tunnelled messages\n");
msg_dbg(tunnel_msg, "OVERDUE/DROP/<REC<");
dbg_print_link(dest_link, "LINK:");
goto exit;
@@ -2422,7 +2542,7 @@ static int link_recv_changeover_msg(struct link **l_ptr,
buf_discard(tunnel_buf);
return 1;
} else {
- warn("Memory squeeze; dropped incoming msg\n");
+ warn("Link changeover error, original msg dropped\n");
}
}
exit:
@@ -2444,13 +2564,8 @@ void tipc_link_recv_bundle(struct sk_buff *buf)
while (msgcount--) {
obuf = buf_extract(buf, pos);
if (obuf == NULL) {
- char addr_string[16];
-
- warn("Buffer allocation failure;\n");
- warn(" incoming message(s) from %s lost\n",
- addr_string_fill(addr_string,
- msg_orignode(buf_msg(buf))));
- return;
+ warn("Link unable to unbundle message(s)\n");
+ break;
};
pos += align(msg_size(buf_msg(obuf)));
msg_dbg(buf_msg(obuf), " /");
@@ -2508,7 +2623,7 @@ int tipc_link_send_long_buf(struct link *l_ptr, struct sk_buff *buf)
}
fragm = buf_acquire(fragm_sz + INT_H_SIZE);
if (fragm == NULL) {
- warn("Memory squeeze; failed to fragment msg\n");
+ warn("Link unable to fragment message\n");
dsz = -ENOMEM;
goto exit;
}
@@ -2623,7 +2738,7 @@ int tipc_link_recv_fragment(struct sk_buff **pending, struct sk_buff **fb,
set_fragm_size(pbuf,fragm_sz);
set_expected_frags(pbuf,exp_fragm_cnt - 1);
} else {
- warn("Memory squeeze; got no defragmenting buffer\n");
+ warn("Link unable to reassemble fragmented message\n");
}
buf_discard(fbuf);
return 0;
diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c
index a3bbc891f959..f0b063bcc2a9 100644
--- a/net/tipc/name_distr.c
+++ b/net/tipc/name_distr.c
@@ -127,7 +127,7 @@ void tipc_named_publish(struct publication *publ)
buf = named_prepare_buf(PUBLICATION, ITEM_SIZE, 0);
if (!buf) {
- warn("Memory squeeze; failed to distribute publication\n");
+ warn("Publication distribution failure\n");
return;
}
@@ -151,7 +151,7 @@ void tipc_named_withdraw(struct publication *publ)
buf = named_prepare_buf(WITHDRAWAL, ITEM_SIZE, 0);
if (!buf) {
- warn("Memory squeeze; failed to distribute withdrawal\n");
+ warn("Withdrawl distribution failure\n");
return;
}
@@ -174,7 +174,6 @@ void tipc_named_node_up(unsigned long node)
u32 rest;
u32 max_item_buf;
- assert(in_own_cluster(node));
read_lock_bh(&tipc_nametbl_lock);
max_item_buf = TIPC_MAX_USER_MSG_SIZE / ITEM_SIZE;
max_item_buf *= ITEM_SIZE;
@@ -185,8 +184,8 @@ void tipc_named_node_up(unsigned long node)
left = (rest <= max_item_buf) ? rest : max_item_buf;
rest -= left;
buf = named_prepare_buf(PUBLICATION, left, node);
- if (buf == NULL) {
- warn("Memory Squeeze; could not send publication\n");
+ if (!buf) {
+ warn("Bulk publication distribution failure\n");
goto exit;
}
item = (struct distr_item *)msg_data(buf_msg(buf));
@@ -221,15 +220,24 @@ exit:
static void node_is_down(struct publication *publ)
{
struct publication *p;
+
write_lock_bh(&tipc_nametbl_lock);
dbg("node_is_down: withdrawing %u, %u, %u\n",
publ->type, publ->lower, publ->upper);
publ->key += 1222345;
p = tipc_nametbl_remove_publ(publ->type, publ->lower,
publ->node, publ->ref, publ->key);
- assert(p == publ);
write_unlock_bh(&tipc_nametbl_lock);
- kfree(publ);
+
+ if (p != publ) {
+ err("Unable to remove publication from failed node\n"
+ "(type=%u, lower=%u, node=0x%x, ref=%u, key=%u)\n",
+ publ->type, publ->lower, publ->node, publ->ref, publ->key);
+ }
+
+ if (p) {
+ kfree(p);
+ }
}
/**
@@ -275,9 +283,15 @@ void tipc_named_recv(struct sk_buff *buf)
if (publ) {
tipc_nodesub_unsubscribe(&publ->subscr);
kfree(publ);
+ } else {
+ err("Unable to remove publication by node 0x%x\n"
+ "(type=%u, lower=%u, ref=%u, key=%u)\n",
+ msg_orignode(msg),
+ ntohl(item->type), ntohl(item->lower),
+ ntohl(item->ref), ntohl(item->key));
}
} else {
- warn("tipc_named_recv: unknown msg\n");
+ warn("Unrecognized name table message received\n");
}
item++;
}
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index d129422fc5c2..38571306aba5 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -71,7 +71,7 @@ struct sub_seq {
* @sseq: pointer to dynamically-sized array of sub-sequences of this 'type';
* sub-sequences are sorted in ascending order
* @alloc: number of sub-sequences currently in array
- * @first_free: upper bound of highest sub-sequence + 1
+ * @first_free: array index of first unused sub-sequence entry
* @ns_list: links to adjacent name sequences in hash chain
* @subscriptions: list of subscriptions for this 'type'
* @lock: spinlock controlling access to name sequence structure
@@ -120,7 +120,7 @@ static struct publication *publ_create(u32 type, u32 lower, u32 upper,
struct publication *publ =
(struct publication *)kmalloc(sizeof(*publ), GFP_ATOMIC);
if (publ == NULL) {
- warn("Memory squeeze; failed to create publication\n");
+ warn("Publication creation failure, no memory\n");
return NULL;
}
@@ -165,7 +165,7 @@ static struct name_seq *tipc_nameseq_create(u32 type, struct hlist_head *seq_hea
struct sub_seq *sseq = tipc_subseq_alloc(1);
if (!nseq || !sseq) {
- warn("Memory squeeze; failed to create name sequence\n");
+ warn("Name sequence creation failed, no memory\n");
kfree(nseq);
kfree(sseq);
return NULL;
@@ -175,7 +175,7 @@ static struct name_seq *tipc_nameseq_create(u32 type, struct hlist_head *seq_hea
nseq->lock = SPIN_LOCK_UNLOCKED;
nseq->type = type;
nseq->sseqs = sseq;
- dbg("tipc_nameseq_create() nseq = %x type %u, ssseqs %x, ff: %u\n",
+ dbg("tipc_nameseq_create(): nseq = %p, type %u, ssseqs %p, ff: %u\n",
nseq, type, nseq->sseqs, nseq->first_free);
nseq->alloc = 1;
INIT_HLIST_NODE(&nseq->ns_list);
@@ -253,16 +253,16 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
struct sub_seq *sseq;
int created_subseq = 0;
- assert(nseq->first_free <= nseq->alloc);
sseq = nameseq_find_subseq(nseq, lower);
- dbg("nameseq_ins: for seq %x,<%u,%u>, found sseq %x\n",
+ dbg("nameseq_ins: for seq %p, {%u,%u}, found sseq %p\n",
nseq, type, lower, sseq);
if (sseq) {
/* Lower end overlaps existing entry => need an exact match */
if ((sseq->lower != lower) || (sseq->upper != upper)) {
- warn("Overlapping publ <%u,%u,%u>\n", type, lower, upper);
+ warn("Cannot publish {%u,%u,%u}, overlap error\n",
+ type, lower, upper);
return NULL;
}
} else {
@@ -277,25 +277,27 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
if ((inspos < nseq->first_free) &&
(upper >= nseq->sseqs[inspos].lower)) {
- warn("Overlapping publ <%u,%u,%u>\n", type, lower, upper);
+ warn("Cannot publish {%u,%u,%u}, overlap error\n",
+ type, lower, upper);
return NULL;
}
/* Ensure there is space for new sub-sequence */
if (nseq->first_free == nseq->alloc) {
- struct sub_seq *sseqs = nseq->sseqs;
- nseq->sseqs = tipc_subseq_alloc(nseq->alloc * 2);
- if (nseq->sseqs != NULL) {
- memcpy(nseq->sseqs, sseqs,
- nseq->alloc * sizeof (struct sub_seq));
- kfree(sseqs);
- dbg("Allocated %u sseqs\n", nseq->alloc);
- nseq->alloc *= 2;
- } else {
- warn("Memory squeeze; failed to create sub-sequence\n");
+ struct sub_seq *sseqs = tipc_subseq_alloc(nseq->alloc * 2);
+
+ if (!sseqs) {
+ warn("Cannot publish {%u,%u,%u}, no memory\n",
+ type, lower, upper);
return NULL;
}
+ dbg("Allocated %u more sseqs\n", nseq->alloc);
+ memcpy(sseqs, nseq->sseqs,
+ nseq->alloc * sizeof(struct sub_seq));
+ kfree(nseq->sseqs);
+ nseq->sseqs = sseqs;
+ nseq->alloc *= 2;
}
dbg("Have %u sseqs for type %u\n", nseq->alloc, type);
@@ -311,7 +313,7 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
sseq->upper = upper;
created_subseq = 1;
}
- dbg("inserting (%u %u %u) from %x:%u into sseq %x(%u,%u) of seq %x\n",
+ dbg("inserting {%u,%u,%u} from <0x%x:%u> into sseq %p(%u,%u) of seq %p\n",
type, lower, upper, node, port, sseq,
sseq->lower, sseq->upper, nseq);
@@ -320,7 +322,7 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
publ = publ_create(type, lower, upper, scope, node, port, key);
if (!publ)
return NULL;
- dbg("inserting publ %x, node=%x publ->node=%x, subscr->node=%x\n",
+ dbg("inserting publ %p, node=0x%x publ->node=0x%x, subscr->node=%p\n",
publ, node, publ->node, publ->subscr.node);
if (!sseq->zone_list)
@@ -367,45 +369,47 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
/**
* tipc_nameseq_remove_publ -
+ *
+ * NOTE: There may be cases where TIPC is asked to remove a publication
+ * that is not in the name table. For example, if another node issues a
+ * publication for a name sequence that overlaps an existing name sequence
+ * the publication will not be recorded, which means the publication won't
+ * be found when the name sequence is later withdrawn by that node.
+ * A failed withdraw request simply returns a failure indication and lets the
+ * caller issue any error or warning messages associated with such a problem.
*/
static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 inst,
u32 node, u32 ref, u32 key)
{
struct publication *publ;
+ struct publication *curr;
struct publication *prev;
struct sub_seq *sseq = nameseq_find_subseq(nseq, inst);
struct sub_seq *free;
struct subscription *s, *st;
int removed_subseq = 0;
- assert(nseq);
-
- if (!sseq) {
- int i;
-
- warn("Withdraw unknown <%u,%u>?\n", nseq->type, inst);
- assert(nseq->sseqs);
- dbg("Dumping subseqs %x for %x, alloc = %u,ff=%u\n",
- nseq->sseqs, nseq, nseq->alloc,
- nseq->first_free);
- for (i = 0; i < nseq->first_free; i++) {
- dbg("Subseq %u(%x): lower = %u,upper = %u\n",
- i, &nseq->sseqs[i], nseq->sseqs[i].lower,
- nseq->sseqs[i].upper);
- }
+ if (!sseq)
return NULL;
- }
- dbg("nameseq_remove: seq: %x, sseq %x, <%u,%u> key %u\n",
+
+ dbg("tipc_nameseq_remove_publ: seq: %p, sseq %p, {%u,%u}, key %u\n",
nseq, sseq, nseq->type, inst, key);
+ /* Remove publication from zone scope list */
+
prev = sseq->zone_list;
publ = sseq->zone_list->zone_list_next;
while ((publ->key != key) || (publ->ref != ref) ||
(publ->node && (publ->node != node))) {
prev = publ;
publ = publ->zone_list_next;
- assert(prev != sseq->zone_list);
+ if (prev == sseq->zone_list) {
+
+ /* Prevent endless loop if publication not found */
+
+ return NULL;
+ }
}
if (publ != sseq->zone_list)
prev->zone_list_next = publ->zone_list_next;
@@ -416,14 +420,24 @@ static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 i
sseq->zone_list = NULL;
}
+ /* Remove publication from cluster scope list, if present */
+
if (in_own_cluster(node)) {
prev = sseq->cluster_list;
- publ = sseq->cluster_list->cluster_list_next;
- while ((publ->key != key) || (publ->ref != ref) ||
- (publ->node && (publ->node != node))) {
- prev = publ;
- publ = publ->cluster_list_next;
- assert(prev != sseq->cluster_list);
+ curr = sseq->cluster_list->cluster_list_next;
+ while (curr != publ) {
+ prev = curr;
+ curr = curr->cluster_list_next;
+ if (prev == sseq->cluster_list) {
+
+ /* Prevent endless loop for malformed list */
+
+ err("Unable to de-list cluster publication\n"
+ "{%u%u}, node=0x%x, ref=%u, key=%u)\n",
+ publ->type, publ->lower, publ->node,
+ publ->ref, publ->key);
+ goto end_cluster;
+ }
}
if (publ != sseq->cluster_list)
prev->cluster_list_next = publ->cluster_list_next;
@@ -434,15 +448,26 @@ static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 i
sseq->cluster_list = NULL;
}
}
+end_cluster:
+
+ /* Remove publication from node scope list, if present */
if (node == tipc_own_addr) {
prev = sseq->node_list;
- publ = sseq->node_list->node_list_next;
- while ((publ->key != key) || (publ->ref != ref) ||
- (publ->node && (publ->node != node))) {
- prev = publ;
- publ = publ->node_list_next;
- assert(prev != sseq->node_list);
+ curr = sseq->node_list->node_list_next;
+ while (curr != publ) {
+ prev = curr;
+ curr = curr->node_list_next;
+ if (prev == sseq->node_list) {
+
+ /* Prevent endless loop for malformed list */
+
+ err("Unable to de-list node publication\n"
+ "{%u%u}, node=0x%x, ref=%u, key=%u)\n",
+ publ->type, publ->lower, publ->node,
+ publ->ref, publ->key);
+ goto end_node;
+ }
}
if (publ != sseq->node_list)
prev->node_list_next = publ->node_list_next;
@@ -453,22 +478,18 @@ static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 i
sseq->node_list = NULL;
}
}
- assert(!publ->node || (publ->node == node));
- assert(publ->ref == ref);
- assert(publ->key == key);
+end_node:
- /*
- * Contract subseq list if no more publications:
- */
- if (!sseq->node_list && !sseq->cluster_list && !sseq->zone_list) {
+ /* Contract subseq list if no more publications for that subseq */
+
+ if (!sseq->zone_list) {
free = &nseq->sseqs[nseq->first_free--];
memmove(sseq, sseq + 1, (free - (sseq + 1)) * sizeof (*sseq));
removed_subseq = 1;
}
- /*
- * Any subscriptions waiting ?
- */
+ /* Notify any waiting subscriptions */
+
list_for_each_entry_safe(s, st, &nseq->subscriptions, nameseq_list) {
tipc_subscr_report_overlap(s,
publ->lower,
@@ -478,6 +499,7 @@ static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 i
publ->node,
removed_subseq);
}
+
return publ;
}
@@ -530,7 +552,7 @@ static struct name_seq *nametbl_find_seq(u32 type)
seq_head = &table.types[hash(type)];
hlist_for_each_entry(ns, seq_node, seq_head, ns_list) {
if (ns->type == type) {
- dbg("found %x\n", ns);
+ dbg("found %p\n", ns);
return ns;
}
}
@@ -543,22 +565,21 @@ struct publication *tipc_nametbl_insert_publ(u32 type, u32 lower, u32 upper,
{
struct name_seq *seq = nametbl_find_seq(type);
- dbg("ins_publ: <%u,%x,%x> found %x\n", type, lower, upper, seq);
+ dbg("tipc_nametbl_insert_publ: {%u,%u,%u} found %p\n", type, lower, upper, seq);
if (lower > upper) {
- warn("Failed to publish illegal <%u,%u,%u>\n",
+ warn("Failed to publish illegal {%u,%u,%u}\n",
type, lower, upper);
return NULL;
}
- dbg("Publishing <%u,%u,%u> from %x\n", type, lower, upper, node);
+ dbg("Publishing {%u,%u,%u} from 0x%x\n", type, lower, upper, node);
if (!seq) {
seq = tipc_nameseq_create(type, &table.types[hash(type)]);
- dbg("tipc_nametbl_insert_publ: created %x\n", seq);
+ dbg("tipc_nametbl_insert_publ: created %p\n", seq);
}
if (!seq)
return NULL;
- assert(seq->type == type);
return tipc_nameseq_insert_publ(seq, type, lower, upper,
scope, node, port, key);
}
@@ -572,7 +593,7 @@ struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower,
if (!seq)
return NULL;
- dbg("Withdrawing <%u,%u> from %x\n", type, lower, node);
+ dbg("Withdrawing {%u,%u} from 0x%x\n", type, lower, node);
publ = tipc_nameseq_remove_publ(seq, lower, node, ref, key);
if (!seq->first_free && list_empty(&seq->subscriptions)) {
@@ -738,12 +759,12 @@ struct publication *tipc_nametbl_publish(u32 type, u32 lower, u32 upper,
struct publication *publ;
if (table.local_publ_count >= tipc_max_publications) {
- warn("Failed publish: max %u local publication\n",
+ warn("Publication failed, local publication limit reached (%u)\n",
tipc_max_publications);
return NULL;
}
if ((type < TIPC_RESERVED_TYPES) && !atomic_read(&rsv_publ_ok)) {
- warn("Failed to publish reserved name <%u,%u,%u>\n",
+ warn("Publication failed, reserved name {%u,%u,%u}\n",
type, lower, upper);
return NULL;
}
@@ -767,10 +788,10 @@ int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key)
{
struct publication *publ;
- dbg("tipc_nametbl_withdraw:<%d,%d,%d>\n", type, lower, key);
+ dbg("tipc_nametbl_withdraw: {%u,%u}, key=%u\n", type, lower, key);
write_lock_bh(&tipc_nametbl_lock);
publ = tipc_nametbl_remove_publ(type, lower, tipc_own_addr, ref, key);
- if (publ) {
+ if (likely(publ)) {
table.local_publ_count--;
if (publ->scope != TIPC_NODE_SCOPE)
tipc_named_withdraw(publ);
@@ -780,6 +801,9 @@ int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key)
return 1;
}
write_unlock_bh(&tipc_nametbl_lock);
+ err("Unable to remove local publication\n"
+ "(type=%u, lower=%u, ref=%u, key=%u)\n",
+ type, lower, ref, key);
return 0;
}
@@ -787,8 +811,7 @@ int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key)
* tipc_nametbl_subscribe - add a subscription object to the name table
*/
-void
-tipc_nametbl_subscribe(struct subscription *s)
+void tipc_nametbl_subscribe(struct subscription *s)
{
u32 type = s->seq.type;
struct name_seq *seq;
@@ -800,11 +823,13 @@ tipc_nametbl_subscribe(struct subscription *s)
}
if (seq){
spin_lock_bh(&seq->lock);
- dbg("tipc_nametbl_subscribe:found %x for <%u,%u,%u>\n",
+ dbg("tipc_nametbl_subscribe:found %p for {%u,%u,%u}\n",
seq, type, s->seq.lower, s->seq.upper);
- assert(seq->type == type);
tipc_nameseq_subscribe(seq, s);
spin_unlock_bh(&seq->lock);
+ } else {
+ warn("Failed to create subscription for {%u,%u,%u}\n",
+ s->seq.type, s->seq.lower, s->seq.upper);
}
write_unlock_bh(&tipc_nametbl_lock);
}
@@ -813,8 +838,7 @@ tipc_nametbl_subscribe(struct subscription *s)
* tipc_nametbl_unsubscribe - remove a subscription object from name table
*/
-void
-tipc_nametbl_unsubscribe(struct subscription *s)
+void tipc_nametbl_unsubscribe(struct subscription *s)
{
struct name_seq *seq;
@@ -1049,35 +1073,20 @@ int tipc_nametbl_init(void)
void tipc_nametbl_stop(void)
{
- struct hlist_head *seq_head;
- struct hlist_node *seq_node;
- struct hlist_node *tmp;
- struct name_seq *seq;
u32 i;
if (!table.types)
return;
+ /* Verify name table is empty, then release it */
+
write_lock_bh(&tipc_nametbl_lock);
for (i = 0; i < tipc_nametbl_size; i++) {
- seq_head = &table.types[i];
- hlist_for_each_entry_safe(seq, seq_node, tmp, seq_head, ns_list) {
- struct sub_seq *sseq = seq->sseqs;
-
- for (; sseq != &seq->sseqs[seq->first_free]; sseq++) {
- struct publication *publ = sseq->zone_list;
- assert(publ);
- do {
- struct publication *next =
- publ->zone_list_next;
- kfree(publ);
- publ = next;
- }
- while (publ != sseq->zone_list);
- }
- }
+ if (!hlist_empty(&table.types[i]))
+ err("tipc_nametbl_stop(): hash chain %u is non-null\n", i);
}
kfree(table.types);
table.types = NULL;
write_unlock_bh(&tipc_nametbl_lock);
}
+
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 0d5db06e203f..ce9678efa98a 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -61,34 +61,37 @@ struct node *tipc_node_create(u32 addr)
struct node **curr_node;
n_ptr = kmalloc(sizeof(*n_ptr),GFP_ATOMIC);
- if (n_ptr != NULL) {
- memset(n_ptr, 0, sizeof(*n_ptr));
- n_ptr->addr = addr;
- n_ptr->lock = SPIN_LOCK_UNLOCKED;
- INIT_LIST_HEAD(&n_ptr->nsub);
-
- c_ptr = tipc_cltr_find(addr);
- if (c_ptr == NULL)
- c_ptr = tipc_cltr_create(addr);
- if (c_ptr != NULL) {
- n_ptr->owner = c_ptr;
- tipc_cltr_attach_node(c_ptr, n_ptr);
- n_ptr->last_router = -1;
-
- /* Insert node into ordered list */
- for (curr_node = &tipc_nodes; *curr_node;
- curr_node = &(*curr_node)->next) {
- if (addr < (*curr_node)->addr) {
- n_ptr->next = *curr_node;
- break;
- }
- }
- (*curr_node) = n_ptr;
- } else {
- kfree(n_ptr);
- n_ptr = NULL;
- }
- }
+ if (!n_ptr) {
+ warn("Node creation failed, no memory\n");
+ return NULL;
+ }
+
+ c_ptr = tipc_cltr_find(addr);
+ if (!c_ptr) {
+ c_ptr = tipc_cltr_create(addr);
+ }
+ if (!c_ptr) {
+ kfree(n_ptr);
+ return NULL;
+ }
+
+ memset(n_ptr, 0, sizeof(*n_ptr));
+ n_ptr->addr = addr;
+ n_ptr->lock = SPIN_LOCK_UNLOCKED;
+ INIT_LIST_HEAD(&n_ptr->nsub);
+ n_ptr->owner = c_ptr;
+ tipc_cltr_attach_node(c_ptr, n_ptr);
+ n_ptr->last_router = -1;
+
+ /* Insert node into ordered list */
+ for (curr_node = &tipc_nodes; *curr_node;
+ curr_node = &(*curr_node)->next) {
+ if (addr < (*curr_node)->addr) {
+ n_ptr->next = *curr_node;
+ break;
+ }
+ }
+ (*curr_node) = n_ptr;
return n_ptr;
}
@@ -122,6 +125,8 @@ void tipc_node_link_up(struct node *n_ptr, struct link *l_ptr)
{
struct link **active = &n_ptr->active_links[0];
+ n_ptr->working_links++;
+
info("Established link <%s> on network plane %c\n",
l_ptr->name, l_ptr->b_ptr->net_plane);
@@ -132,7 +137,7 @@ void tipc_node_link_up(struct node *n_ptr, struct link *l_ptr)
return;
}
if (l_ptr->priority < active[0]->priority) {
- info("Link is standby\n");
+ info("New link <%s> becomes standby\n", l_ptr->name);
return;
}
tipc_link_send_duplicate(active[0], l_ptr);
@@ -140,8 +145,9 @@ void tipc_node_link_up(struct node *n_ptr, struct link *l_ptr)
active[0] = l_ptr;
return;
}
- info("Link <%s> on network plane %c becomes standby\n",
- active[0]->name, active[0]->b_ptr->net_plane);
+ info("Old link <%s> becomes standby\n", active[0]->name);
+ if (active[1] != active[0])
+ info("Old link <%s> becomes standby\n", active[1]->name);
active[0] = active[1] = l_ptr;
}
@@ -181,6 +187,8 @@ void tipc_node_link_down(struct node *n_ptr, struct link *l_ptr)
{
struct link **active;
+ n_ptr->working_links--;
+
if (!tipc_link_is_active(l_ptr)) {
info("Lost standby link <%s> on network plane %c\n",
l_ptr->name, l_ptr->b_ptr->net_plane);
@@ -210,8 +218,7 @@ int tipc_node_has_active_links(struct node *n_ptr)
int tipc_node_has_redundant_links(struct node *n_ptr)
{
- return (tipc_node_has_active_links(n_ptr) &&
- (n_ptr->active_links[0] != n_ptr->active_links[1]));
+ return (n_ptr->working_links > 1);
}
static int tipc_node_has_active_routes(struct node *n_ptr)
@@ -234,7 +241,6 @@ struct node *tipc_node_attach_link(struct link *l_ptr)
u32 bearer_id = l_ptr->b_ptr->identity;
char addr_string[16];
- assert(bearer_id < MAX_BEARERS);
if (n_ptr->link_cnt >= 2) {
char addr_string[16];
@@ -249,7 +255,7 @@ struct node *tipc_node_attach_link(struct link *l_ptr)
n_ptr->link_cnt++;
return n_ptr;
}
- err("Attempt to establish second link on <%s> to <%s> \n",
+ err("Attempt to establish second link on <%s> to %s \n",
l_ptr->b_ptr->publ.name,
addr_string_fill(addr_string, l_ptr->addr));
}
@@ -314,7 +320,7 @@ static void node_established_contact(struct node *n_ptr)
struct cluster *c_ptr;
dbg("node_established_contact:-> %x\n", n_ptr->addr);
- if (!tipc_node_has_active_routes(n_ptr)) {
+ if (!tipc_node_has_active_routes(n_ptr) && in_own_cluster(n_ptr->addr)) {
tipc_k_signal((Handler)tipc_named_node_up, n_ptr->addr);
}
diff --git a/net/tipc/node.h b/net/tipc/node.h
index 781126e084ae..a07cc79ea637 100644
--- a/net/tipc/node.h
+++ b/net/tipc/node.h
@@ -51,6 +51,7 @@
* @nsub: list of "node down" subscriptions monitoring node
* @active_links: pointers to active links to node
* @links: pointers to all links to node
+ * @working_links: number of working links to node (both active and standby)
* @link_cnt: number of links to node
* @permit_changeover: non-zero if node has redundant links to this system
* @routers: bitmap (used for multicluster communication)
@@ -76,6 +77,7 @@ struct node {
struct link *active_links[2];
struct link *links[MAX_BEARERS];
int link_cnt;
+ int working_links;
int permit_changeover;
u32 routers[512/32];
int last_router;
diff --git a/net/tipc/node_subscr.c b/net/tipc/node_subscr.c
index cff4068cc755..cc3fff3dec4f 100644
--- a/net/tipc/node_subscr.c
+++ b/net/tipc/node_subscr.c
@@ -47,18 +47,19 @@
void tipc_nodesub_subscribe(struct node_subscr *node_sub, u32 addr,
void *usr_handle, net_ev_handler handle_down)
{
- node_sub->node = NULL;
- if (addr == tipc_own_addr)
+ if (addr == tipc_own_addr) {
+ node_sub->node = NULL;
return;
- if (!tipc_addr_node_valid(addr)) {
- warn("node_subscr with illegal %x\n", addr);
+ }
+
+ node_sub->node = tipc_node_find(addr);
+ if (!node_sub->node) {
+ warn("Node subscription rejected, unknown node 0x%x\n", addr);
return;
}
-
node_sub->handle_node_down = handle_down;
node_sub->usr_handle = usr_handle;
- node_sub->node = tipc_node_find(addr);
- assert(node_sub->node);
+
tipc_node_lock(node_sub->node);
list_add_tail(&node_sub->nodesub_list, &node_sub->node->nsub);
tipc_node_unlock(node_sub->node);
diff --git a/net/tipc/port.c b/net/tipc/port.c
index 67e96cb1e825..47d97404e3ee 100644
--- a/net/tipc/port.c
+++ b/net/tipc/port.c
@@ -168,7 +168,6 @@ void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp)
struct port_list *item = dp;
int cnt = 0;
- assert(buf);
msg = buf_msg(buf);
/* Create destination port list, if one wasn't supplied */
@@ -196,7 +195,7 @@ void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp)
struct sk_buff *b = skb_clone(buf, GFP_ATOMIC);
if (b == NULL) {
- warn("Buffer allocation failure\n");
+ warn("Unable to deliver multicast message(s)\n");
msg_dbg(msg, "LOST:");
goto exit;
}
@@ -228,14 +227,14 @@ u32 tipc_createport_raw(void *usr_handle,
u32 ref;
p_ptr = kmalloc(sizeof(*p_ptr), GFP_ATOMIC);
- if (p_ptr == NULL) {
- warn("Memory squeeze; failed to create port\n");
+ if (!p_ptr) {
+ warn("Port creation failed, no memory\n");
return 0;
}
memset(p_ptr, 0, sizeof(*p_ptr));
ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock);
if (!ref) {
- warn("Reference Table Exhausted\n");
+ warn("Port creation failed, reference table exhausted\n");
kfree(p_ptr);
return 0;
}
@@ -810,18 +809,20 @@ static void port_dispatcher_sigh(void *dummy)
void *usr_handle;
int connected;
int published;
+ u32 message_type;
struct sk_buff *next = buf->next;
struct tipc_msg *msg = buf_msg(buf);
u32 dref = msg_destport(msg);
+ message_type = msg_type(msg);
+ if (message_type > TIPC_DIRECT_MSG)
+ goto reject; /* Unsupported message type */
+
p_ptr = tipc_port_lock(dref);
- if (!p_ptr) {
- /* Port deleted while msg in queue */
- tipc_reject_msg(buf, TIPC_ERR_NO_PORT);
- buf = next;
- continue;
- }
+ if (!p_ptr)
+ goto reject; /* Port deleted while msg in queue */
+
orig.ref = msg_origport(msg);
orig.node = msg_orignode(msg);
up_ptr = p_ptr->user_port;
@@ -832,7 +833,7 @@ static void port_dispatcher_sigh(void *dummy)
if (unlikely(msg_errcode(msg)))
goto err;
- switch (msg_type(msg)) {
+ switch (message_type) {
case TIPC_CONN_MSG:{
tipc_conn_msg_event cb = up_ptr->conn_msg_cb;
@@ -874,6 +875,7 @@ static void port_dispatcher_sigh(void *dummy)
&orig);
break;
}
+ case TIPC_MCAST_MSG:
case TIPC_NAMED_MSG:{
tipc_named_msg_event cb = up_ptr->named_msg_cb;
@@ -886,7 +888,8 @@ static void port_dispatcher_sigh(void *dummy)
goto reject;
dseq.type = msg_nametype(msg);
dseq.lower = msg_nameinst(msg);
- dseq.upper = dseq.lower;
+ dseq.upper = (message_type == TIPC_NAMED_MSG)
+ ? dseq.lower : msg_nameupper(msg);
skb_pull(buf, msg_hdr_sz(msg));
cb(usr_handle, dref, &buf, msg_data(msg),
msg_data_sz(msg), msg_importance(msg),
@@ -899,7 +902,7 @@ static void port_dispatcher_sigh(void *dummy)
buf = next;
continue;
err:
- switch (msg_type(msg)) {
+ switch (message_type) {
case TIPC_CONN_MSG:{
tipc_conn_shutdown_event cb =
@@ -931,6 +934,7 @@ err:
msg_data_sz(msg), msg_errcode(msg), &orig);
break;
}
+ case TIPC_MCAST_MSG:
case TIPC_NAMED_MSG:{
tipc_named_msg_err_event cb =
up_ptr->named_err_cb;
@@ -940,7 +944,8 @@ err:
break;
dseq.type = msg_nametype(msg);
dseq.lower = msg_nameinst(msg);
- dseq.upper = dseq.lower;
+ dseq.upper = (message_type == TIPC_NAMED_MSG)
+ ? dseq.lower : msg_nameupper(msg);
skb_pull(buf, msg_hdr_sz(msg));
cb(usr_handle, dref, &buf, msg_data(msg),
msg_data_sz(msg), msg_errcode(msg), &dseq);
@@ -1054,7 +1059,8 @@ int tipc_createport(u32 user_ref,
u32 ref;
up_ptr = (struct user_port *)kmalloc(sizeof(*up_ptr), GFP_ATOMIC);
- if (up_ptr == NULL) {
+ if (!up_ptr) {
+ warn("Port creation failed, no memory\n");
return -ENOMEM;
}
ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, importance);
@@ -1165,8 +1171,6 @@ int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq)
p_ptr = tipc_port_lock(ref);
if (!p_ptr)
return -EINVAL;
- if (!p_ptr->publ.published)
- goto exit;
if (!seq) {
list_for_each_entry_safe(publ, tpubl,
&p_ptr->publications, pport_list) {
@@ -1193,7 +1197,6 @@ int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq)
}
if (list_empty(&p_ptr->publications))
p_ptr->publ.published = 0;
-exit:
tipc_port_unlock(p_ptr);
return res;
}
diff --git a/net/tipc/ref.c b/net/tipc/ref.c
index 33bbf5095094..d2f0cce10e20 100644
--- a/net/tipc/ref.c
+++ b/net/tipc/ref.c
@@ -127,7 +127,14 @@ u32 tipc_ref_acquire(void *object, spinlock_t **lock)
u32 next_plus_upper;
u32 reference = 0;
- assert(tipc_ref_table.entries && object);
+ if (!object) {
+ err("Attempt to acquire reference to non-existent object\n");
+ return 0;
+ }
+ if (!tipc_ref_table.entries) {
+ err("Reference table not found during acquisition attempt\n");
+ return 0;
+ }
write_lock_bh(&ref_table_lock);
if (tipc_ref_table.first_free) {
@@ -162,15 +169,28 @@ void tipc_ref_discard(u32 ref)
u32 index;
u32 index_mask;
- assert(tipc_ref_table.entries);
- assert(ref != 0);
+ if (!ref) {
+ err("Attempt to discard reference 0\n");
+ return;
+ }
+ if (!tipc_ref_table.entries) {
+ err("Reference table not found during discard attempt\n");
+ return;
+ }
write_lock_bh(&ref_table_lock);
index_mask = tipc_ref_table.index_mask;
index = ref & index_mask;
entry = &(tipc_ref_table.entries[index]);
- assert(entry->object != 0);
- assert(entry->data.reference == ref);
+
+ if (!entry->object) {
+ err("Attempt to discard reference to non-existent object\n");
+ goto exit;
+ }
+ if (entry->data.reference != ref) {
+ err("Attempt to discard non-existent reference\n");
+ goto exit;
+ }
/* mark entry as unused */
entry->object = NULL;
@@ -184,6 +204,7 @@ void tipc_ref_discard(u32 ref)
/* increment upper bits of entry to invalidate subsequent references */
entry->data.next_plus_upper = (ref & ~index_mask) + (index_mask + 1);
+exit:
write_unlock_bh(&ref_table_lock);
}
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 648a734e6044..32d778448a00 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -169,12 +169,6 @@ static int tipc_create(struct socket *sock, int protocol)
struct sock *sk;
u32 ref;
- if ((sock->type != SOCK_STREAM) &&
- (sock->type != SOCK_SEQPACKET) &&
- (sock->type != SOCK_DGRAM) &&
- (sock->type != SOCK_RDM))
- return -EPROTOTYPE;
-
if (unlikely(protocol != 0))
return -EPROTONOSUPPORT;
@@ -199,6 +193,9 @@ static int tipc_create(struct socket *sock, int protocol)
sock->ops = &msg_ops;
sock->state = SS_READY;
break;
+ default:
+ tipc_deleteport(ref);
+ return -EPROTOTYPE;
}
sk = sk_alloc(AF_TIPC, GFP_KERNEL, &tipc_proto, 1);
@@ -426,7 +423,7 @@ static int dest_name_check(struct sockaddr_tipc *dest, struct msghdr *m)
if (copy_from_user(&hdr, m->msg_iov[0].iov_base, sizeof(hdr)))
return -EFAULT;
- if ((ntohs(hdr.tcm_type) & 0xC000) & (!capable(CAP_NET_ADMIN)))
+ if ((ntohs(hdr.tcm_type) & 0xC000) && (!capable(CAP_NET_ADMIN)))
return -EACCES;
return 0;
@@ -437,7 +434,7 @@ static int dest_name_check(struct sockaddr_tipc *dest, struct msghdr *m)
* @iocb: (unused)
* @sock: socket structure
* @m: message to send
- * @total_len: (unused)
+ * @total_len: length of message
*
* Message must have an destination specified explicitly.
* Used for SOCK_RDM and SOCK_DGRAM messages,
@@ -458,7 +455,8 @@ static int send_msg(struct kiocb *iocb, struct socket *sock,
if (unlikely(!dest))
return -EDESTADDRREQ;
- if (unlikely(dest->family != AF_TIPC))
+ if (unlikely((m->msg_namelen < sizeof(*dest)) ||
+ (dest->family != AF_TIPC)))
return -EINVAL;
needs_conn = (sock->state != SS_READY);
@@ -470,6 +468,10 @@ static int send_msg(struct kiocb *iocb, struct socket *sock,
if ((tsock->p->published) ||
((sock->type == SOCK_STREAM) && (total_len != 0)))
return -EOPNOTSUPP;
+ if (dest->addrtype == TIPC_ADDR_NAME) {
+ tsock->p->conn_type = dest->addr.name.name.type;
+ tsock->p->conn_instance = dest->addr.name.name.instance;
+ }
}
if (down_interruptible(&tsock->sem))
@@ -538,7 +540,7 @@ exit:
* @iocb: (unused)
* @sock: socket structure
* @m: message to send
- * @total_len: (unused)
+ * @total_len: length of message
*
* Used for SOCK_SEQPACKET messages and SOCK_STREAM data.
*
@@ -561,15 +563,15 @@ static int send_packet(struct kiocb *iocb, struct socket *sock,
return -ERESTARTSYS;
}
- if (unlikely(sock->state != SS_CONNECTED)) {
- if (sock->state == SS_DISCONNECTING)
- res = -EPIPE;
- else
- res = -ENOTCONN;
- goto exit;
- }
-
do {
+ if (unlikely(sock->state != SS_CONNECTED)) {
+ if (sock->state == SS_DISCONNECTING)
+ res = -EPIPE;
+ else
+ res = -ENOTCONN;
+ goto exit;
+ }
+
res = tipc_send(tsock->p->ref, m->msg_iovlen, m->msg_iov);
if (likely(res != -ELINKCONG)) {
exit:
@@ -597,7 +599,8 @@ exit:
*
* Used for SOCK_STREAM data.
*
- * Returns the number of bytes sent on success, or errno otherwise
+ * Returns the number of bytes sent on success (or partial success),
+ * or errno if no data sent
*/
@@ -611,6 +614,7 @@ static int send_stream(struct kiocb *iocb, struct socket *sock,
char __user *curr_start;
int curr_left;
int bytes_to_send;
+ int bytes_sent;
int res;
if (likely(total_len <= TIPC_MAX_USER_MSG_SIZE))
@@ -633,11 +637,11 @@ static int send_stream(struct kiocb *iocb, struct socket *sock,
* of small iovec entries into send_packet().
*/
- my_msg = *m;
- curr_iov = my_msg.msg_iov;
- curr_iovlen = my_msg.msg_iovlen;
+ curr_iov = m->msg_iov;
+ curr_iovlen = m->msg_iovlen;
my_msg.msg_iov = &my_iov;
my_msg.msg_iovlen = 1;
+ bytes_sent = 0;
while (curr_iovlen--) {
curr_start = curr_iov->iov_base;
@@ -648,16 +652,18 @@ static int send_stream(struct kiocb *iocb, struct socket *sock,
? curr_left : TIPC_MAX_USER_MSG_SIZE;
my_iov.iov_base = curr_start;
my_iov.iov_len = bytes_to_send;
- if ((res = send_packet(iocb, sock, &my_msg, 0)) < 0)
- return res;
+ if ((res = send_packet(iocb, sock, &my_msg, 0)) < 0) {
+ return bytes_sent ? bytes_sent : res;
+ }
curr_left -= bytes_to_send;
curr_start += bytes_to_send;
+ bytes_sent += bytes_to_send;
}
curr_iov++;
}
- return total_len;
+ return bytes_sent;
}
/**
@@ -727,6 +733,7 @@ static int anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
u32 anc_data[3];
u32 err;
u32 dest_type;
+ int has_name;
int res;
if (likely(m->msg_controllen == 0))
@@ -738,10 +745,10 @@ static int anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
if (unlikely(err)) {
anc_data[0] = err;
anc_data[1] = msg_data_sz(msg);
- if ((res = put_cmsg(m, SOL_SOCKET, TIPC_ERRINFO, 8, anc_data)))
+ if ((res = put_cmsg(m, SOL_TIPC, TIPC_ERRINFO, 8, anc_data)))
return res;
if (anc_data[1] &&
- (res = put_cmsg(m, SOL_SOCKET, TIPC_RETDATA, anc_data[1],
+ (res = put_cmsg(m, SOL_TIPC, TIPC_RETDATA, anc_data[1],
msg_data(msg))))
return res;
}
@@ -751,25 +758,28 @@ static int anc_data_recv(struct msghdr *m, struct tipc_msg *msg,
dest_type = msg ? msg_type(msg) : TIPC_DIRECT_MSG;
switch (dest_type) {
case TIPC_NAMED_MSG:
+ has_name = 1;
anc_data[0] = msg_nametype(msg);
anc_data[1] = msg_namelower(msg);
anc_data[2] = msg_namelower(msg);
break;
case TIPC_MCAST_MSG:
+ has_name = 1;
anc_data[0] = msg_nametype(msg);
anc_data[1] = msg_namelower(msg);
anc_data[2] = msg_nameupper(msg);
break;
case TIPC_CONN_MSG:
+ has_name = (tport->conn_type != 0);
anc_data[0] = tport->conn_type;
anc_data[1] = tport->conn_instance;
anc_data[2] = tport->conn_instance;
break;
default:
- anc_data[0] = 0;
+ has_name = 0;
}
- if (anc_data[0] &&
- (res = put_cmsg(m, SOL_SOCKET, TIPC_DESTNAME, 12, anc_data)))
+ if (has_name &&
+ (res = put_cmsg(m, SOL_TIPC, TIPC_DESTNAME, 12, anc_data)))
return res;
return 0;
@@ -960,7 +970,7 @@ static int recv_stream(struct kiocb *iocb, struct socket *sock,
restart:
if (unlikely((skb_queue_len(&sock->sk->sk_receive_queue) == 0) &&
(flags & MSG_DONTWAIT))) {
- res = (sz_copied == 0) ? -EWOULDBLOCK : 0;
+ res = -EWOULDBLOCK;
goto exit;
}
@@ -1051,7 +1061,7 @@ restart:
exit:
up(&tsock->sem);
- return res ? res : sz_copied;
+ return sz_copied ? sz_copied : res;
}
/**
@@ -1236,7 +1246,8 @@ static int connect(struct socket *sock, struct sockaddr *dest, int destlen,
if (sock->state == SS_READY)
return -EOPNOTSUPP;
- /* MOVE THE REST OF THIS ERROR CHECKING TO send_msg()? */
+ /* Issue Posix-compliant error code if socket is in the wrong state */
+
if (sock->state == SS_LISTENING)
return -EOPNOTSUPP;
if (sock->state == SS_CONNECTING)
@@ -1244,13 +1255,20 @@ static int connect(struct socket *sock, struct sockaddr *dest, int destlen,
if (sock->state != SS_UNCONNECTED)
return -EISCONN;
- if ((dst->family != AF_TIPC) ||
- ((dst->addrtype != TIPC_ADDR_NAME) && (dst->addrtype != TIPC_ADDR_ID)))
+ /*
+ * Reject connection attempt using multicast address
+ *
+ * Note: send_msg() validates the rest of the address fields,
+ * so there's no need to do it here
+ */
+
+ if (dst->addrtype == TIPC_ADDR_MCAST)
return -EINVAL;
/* Send a 'SYN-' to destination */
m.msg_name = dest;
+ m.msg_namelen = destlen;
if ((res = send_msg(NULL, sock, &m, 0)) < 0) {
sock->state = SS_DISCONNECTING;
return res;
@@ -1269,10 +1287,6 @@ static int connect(struct socket *sock, struct sockaddr *dest, int destlen,
msg = buf_msg(buf);
res = auto_connect(sock, tsock, msg);
if (!res) {
- if (dst->addrtype == TIPC_ADDR_NAME) {
- tsock->p->conn_type = dst->addr.name.name.type;
- tsock->p->conn_instance = dst->addr.name.name.instance;
- }
if (!msg_data_sz(msg))
advance_queue(tsock);
}
@@ -1386,7 +1400,7 @@ exit:
/**
* shutdown - shutdown socket connection
* @sock: socket structure
- * @how: direction to close (always treated as read + write)
+ * @how: direction to close (unused; always treated as read + write)
*
* Terminates connection (if necessary), then purges socket's receive queue.
*
@@ -1469,7 +1483,8 @@ restart:
* Returns 0 on success, errno otherwise
*/
-static int setsockopt(struct socket *sock, int lvl, int opt, char *ov, int ol)
+static int setsockopt(struct socket *sock,
+ int lvl, int opt, char __user *ov, int ol)
{
struct tipc_sock *tsock = tipc_sk(sock->sk);
u32 value;
@@ -1525,7 +1540,8 @@ static int setsockopt(struct socket *sock, int lvl, int opt, char *ov, int ol)
* Returns 0 on success, errno otherwise
*/
-static int getsockopt(struct socket *sock, int lvl, int opt, char *ov, int *ol)
+static int getsockopt(struct socket *sock,
+ int lvl, int opt, char __user *ov, int *ol)
{
struct tipc_sock *tsock = tipc_sk(sock->sk);
int len;
diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c
index c5f026c7fd38..fc171875660c 100644
--- a/net/tipc/subscr.c
+++ b/net/tipc/subscr.c
@@ -266,7 +266,8 @@ static void subscr_subscribe(struct tipc_subscr *s,
/* Refuse subscription if global limit exceeded */
if (atomic_read(&topsrv.subscription_count) >= tipc_max_subscriptions) {
- warn("Failed: max %u subscriptions\n", tipc_max_subscriptions);
+ warn("Subscription rejected, subscription limit reached (%u)\n",
+ tipc_max_subscriptions);
subscr_terminate(subscriber);
return;
}
@@ -274,8 +275,8 @@ static void subscr_subscribe(struct tipc_subscr *s,
/* Allocate subscription object */
sub = kmalloc(sizeof(*sub), GFP_ATOMIC);
- if (sub == NULL) {
- warn("Memory squeeze; ignoring subscription\n");
+ if (!sub) {
+ warn("Subscription rejected, no memory\n");
subscr_terminate(subscriber);
return;
}
@@ -298,8 +299,7 @@ static void subscr_subscribe(struct tipc_subscr *s,
if ((((sub->filter != TIPC_SUB_PORTS)
&& (sub->filter != TIPC_SUB_SERVICE)))
|| (sub->seq.lower > sub->seq.upper)) {
- warn("Rejecting illegal subscription %u,%u,%u\n",
- sub->seq.type, sub->seq.lower, sub->seq.upper);
+ warn("Subscription rejected, illegal request\n");
kfree(sub);
subscr_terminate(subscriber);
return;
@@ -387,7 +387,7 @@ static void subscr_named_msg_event(void *usr_handle,
dbg("subscr_named_msg_event: orig = %x own = %x,\n",
orig->node, tipc_own_addr);
if (size && (size != sizeof(struct tipc_subscr))) {
- warn("Received tipc_subscr of invalid size\n");
+ warn("Subscriber rejected, invalid subscription size\n");
return;
}
@@ -395,7 +395,7 @@ static void subscr_named_msg_event(void *usr_handle,
subscriber = kmalloc(sizeof(struct subscriber), GFP_ATOMIC);
if (subscriber == NULL) {
- warn("Memory squeeze; ignoring subscriber setup\n");
+ warn("Subscriber rejected, no memory\n");
return;
}
memset(subscriber, 0, sizeof(struct subscriber));
@@ -403,7 +403,7 @@ static void subscr_named_msg_event(void *usr_handle,
INIT_LIST_HEAD(&subscriber->subscriber_list);
subscriber->ref = tipc_ref_acquire(subscriber, &subscriber->lock);
if (subscriber->ref == 0) {
- warn("Failed to acquire subscriber reference\n");
+ warn("Subscriber rejected, reference table exhausted\n");
kfree(subscriber);
return;
}
@@ -422,7 +422,7 @@ static void subscr_named_msg_event(void *usr_handle,
NULL,
&subscriber->port_ref);
if (subscriber->port_ref == 0) {
- warn("Memory squeeze; failed to create subscription port\n");
+ warn("Subscriber rejected, unable to create port\n");
tipc_ref_discard(subscriber->ref);
kfree(subscriber);
return;
diff --git a/net/tipc/zone.c b/net/tipc/zone.c
index 2803e1b4f170..316c4872ff5b 100644
--- a/net/tipc/zone.c
+++ b/net/tipc/zone.c
@@ -44,19 +44,24 @@
struct _zone *tipc_zone_create(u32 addr)
{
- struct _zone *z_ptr = NULL;
+ struct _zone *z_ptr;
u32 z_num;
- if (!tipc_addr_domain_valid(addr))
+ if (!tipc_addr_domain_valid(addr)) {
+ err("Zone creation failed, invalid domain 0x%x\n", addr);
return NULL;
+ }
z_ptr = (struct _zone *)kmalloc(sizeof(*z_ptr), GFP_ATOMIC);
- if (z_ptr != NULL) {
- memset(z_ptr, 0, sizeof(*z_ptr));
- z_num = tipc_zone(addr);
- z_ptr->addr = tipc_addr(z_num, 0, 0);
- tipc_net.zones[z_num] = z_ptr;
+ if (!z_ptr) {
+ warn("Zone creation failed, insufficient memory\n");
+ return NULL;
}
+
+ memset(z_ptr, 0, sizeof(*z_ptr));
+ z_num = tipc_zone(addr);
+ z_ptr->addr = tipc_addr(z_num, 0, 0);
+ tipc_net.zones[z_num] = z_ptr;
return z_ptr;
}
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