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Merge branch 'tipc-Jun24-2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/net-next-2.6

hifive-unleashed-5.1
David S. Miller 2011-06-24 16:49:10 -07:00
parent cd5f3e2064 e4a0aee47e
commit 1897fe55e1
12 changed files with 276 additions and 381 deletions
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6
net/tipc/bcast.c
View File

@ -552,12 +552,16 @@ static int tipc_bcbearer_send(struct sk_buff *buf,
if (likely(!msg_non_seq(buf_msg(buf)))) {
struct tipc_msg *msg;
assert(tipc_bcast_nmap.count != 0);
bcbuf_set_acks(buf, tipc_bcast_nmap.count);
msg = buf_msg(buf);
msg_set_non_seq(msg, 1);
msg_set_mc_netid(msg, tipc_net_id);
bcl->stats.sent_info++;
if (WARN_ON(!tipc_bcast_nmap.count)) {
dump_stack();
return 0;
}
}
/* Send buffer over bearers until all targets reached */

1
net/tipc/bearer.c
View File

@ -402,7 +402,6 @@ void tipc_bearer_lock_push(struct tipc_bearer *b_ptr)
void tipc_continue(struct tipc_bearer *b_ptr)
{
spin_lock_bh(&b_ptr->lock);
b_ptr->continue_count++;
if (!list_empty(&b_ptr->cong_links))
tipc_k_signal((Handler)tipc_bearer_lock_push, (unsigned long)b_ptr);
b_ptr->blocked = 0;

2
net/tipc/bearer.h
View File

@ -107,7 +107,6 @@ struct media {
* @link_req: ptr to (optional) structure making periodic link setup requests
* @links: list of non-congested links associated with bearer
* @cong_links: list of congested links associated with bearer
* @continue_count: # of times bearer has resumed after congestion or blocking
* @active: non-zero if bearer structure is represents a bearer
* @net_plane: network plane ('A' through 'H') currently associated with bearer
* @nodes: indicates which nodes in cluster can be reached through bearer
@ -129,7 +128,6 @@ struct tipc_bearer {
struct link_req *link_req;
struct list_head links;
struct list_head cong_links;
u32 continue_count;
int active;
char net_plane;
struct tipc_node_map nodes;

6
net/tipc/core.h
View File

@ -61,12 +61,6 @@
struct tipc_msg; /* msg.h */
struct print_buf; /* log.h */
/*
* TIPC sanity test macros
*/
#define assert(i) BUG_ON(!(i))
/*
* TIPC system monitoring code
*/

6
net/tipc/link.c
View File

@ -1572,7 +1572,7 @@ static struct sk_buff *link_insert_deferred_queue(struct link *l_ptr,
static int link_recv_buf_validate(struct sk_buff *buf)
{
static u32 min_data_hdr_size[8] = {
SHORT_H_SIZE, MCAST_H_SIZE, LONG_H_SIZE, DIR_MSG_H_SIZE,
SHORT_H_SIZE, MCAST_H_SIZE, NAMED_H_SIZE, BASIC_H_SIZE,
MAX_H_SIZE, MAX_H_SIZE, MAX_H_SIZE, MAX_H_SIZE
};
@ -2553,7 +2553,7 @@ int tipc_link_recv_fragment(struct sk_buff **pending, struct sk_buff **fb,
u32 msg_sz = msg_size(imsg);
u32 fragm_sz = msg_data_sz(fragm);
u32 exp_fragm_cnt = msg_sz/fragm_sz + !!(msg_sz % fragm_sz);
u32 max = TIPC_MAX_USER_MSG_SIZE + LONG_H_SIZE;
u32 max = TIPC_MAX_USER_MSG_SIZE + NAMED_H_SIZE;
if (msg_type(imsg) == TIPC_MCAST_MSG)
max = TIPC_MAX_USER_MSG_SIZE + MCAST_H_SIZE;
if (msg_size(imsg) > max) {
@ -2882,7 +2882,7 @@ static int tipc_link_stats(const char *name, char *buf, const u32 buf_size)
profile_total = 1;
tipc_printf(&pb, " TX profile sample:%u packets average:%u octets\n"
" 0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% "
"-16354:%u%% -32768:%u%% -66000:%u%%\n",
"-16384:%u%% -32768:%u%% -66000:%u%%\n",
l_ptr->stats.msg_length_counts,
l_ptr->stats.msg_lengths_total / profile_total,
percent(l_ptr->stats.msg_length_profile[0], profile_total),

6
net/tipc/msg.c
View File

@ -61,10 +61,8 @@ void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type,
msg_set_size(m, hsize);
msg_set_prevnode(m, tipc_own_addr);
msg_set_type(m, type);
if (!msg_short(m)) {
msg_set_orignode(m, tipc_own_addr);
msg_set_destnode(m, destnode);
}
msg_set_orignode(m, tipc_own_addr);
msg_set_destnode(m, destnode);
}
/**

34
net/tipc/msg.h
View File

@ -68,10 +68,10 @@
* Message header sizes
*/
#define SHORT_H_SIZE 24 /* Connected, in-cluster messages */
#define DIR_MSG_H_SIZE 32 /* Directly addressed messages */
#define LONG_H_SIZE 40 /* Named messages */
#define MCAST_H_SIZE 44 /* Multicast messages */
#define SHORT_H_SIZE 24 /* In-cluster basic payload message */
#define BASIC_H_SIZE 32 /* Basic payload message */
#define NAMED_H_SIZE 40 /* Named payload message */
#define MCAST_H_SIZE 44 /* Multicast payload message */
#define INT_H_SIZE 40 /* Internal messages */
#define MIN_H_SIZE 24 /* Smallest legal TIPC header size */
#define MAX_H_SIZE 60 /* Largest possible TIPC header size */
@ -310,26 +310,6 @@ static inline void msg_set_seqno(struct tipc_msg *m, u32 n)
msg_set_bits(m, 2, 0, 0xffff, n);
}
/*
* TIPC may utilize the "link ack #" and "link seq #" fields of a short
* message header to hold the destination node for the message, since the
* normal "dest node" field isn't present. This cache is only referenced
* when required, so populating the cache of a longer message header is
* harmless (as long as the header has the two link sequence fields present).
*
* Note: Host byte order is OK here, since the info never goes off-card.
*/
static inline u32 msg_destnode_cache(struct tipc_msg *m)
{
return m->hdr[2];
}
static inline void msg_set_destnode_cache(struct tipc_msg *m, u32 dnode)
{
m->hdr[2] = dnode;
}
/*
* Words 3-10
*/
@ -377,7 +357,7 @@ static inline void msg_set_mc_netid(struct tipc_msg *m, u32 p)
static inline int msg_short(struct tipc_msg *m)
{
return msg_hdr_sz(m) == 24;
return msg_hdr_sz(m) == SHORT_H_SIZE;
}
static inline u32 msg_orignode(struct tipc_msg *m)
@ -635,7 +615,7 @@ static inline u32 msg_link_selector(struct tipc_msg *m)
static inline void msg_set_link_selector(struct tipc_msg *m, u32 n)
{
msg_set_bits(m, 4, 0, 1, (n & 1));
msg_set_bits(m, 4, 0, 1, n);
}
/*
@ -659,7 +639,7 @@ static inline u32 msg_probe(struct tipc_msg *m)
static inline void msg_set_probe(struct tipc_msg *m, u32 val)
{
msg_set_bits(m, 5, 0, 1, (val & 1));
msg_set_bits(m, 5, 0, 1, val);
}
static inline char msg_net_plane(struct tipc_msg *m)

6
net/tipc/name_distr.c
View File

@ -94,13 +94,13 @@ static void publ_to_item(struct distr_item *i, struct publication *p)
static struct sk_buff *named_prepare_buf(u32 type, u32 size, u32 dest)
{
struct sk_buff *buf = tipc_buf_acquire(LONG_H_SIZE + size);
struct sk_buff *buf = tipc_buf_acquire(INT_H_SIZE + size);
struct tipc_msg *msg;
if (buf != NULL) {
msg = buf_msg(buf);
tipc_msg_init(msg, NAME_DISTRIBUTOR, type, LONG_H_SIZE, dest);
msg_set_size(msg, LONG_H_SIZE + size);
tipc_msg_init(msg, NAME_DISTRIBUTOR, type, INT_H_SIZE, dest);
msg_set_size(msg, INT_H_SIZE + size);
}
return buf;
}

291
net/tipc/name_table.c
View File

@ -2,7 +2,7 @@
* net/tipc/name_table.c: TIPC name table code
*
* Copyright (c) 2000-2006, Ericsson AB
* Copyright (c) 2004-2008, Wind River Systems
* Copyright (c) 2004-2008, 2010-2011, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -44,9 +44,7 @@
static int tipc_nametbl_size = 1024; /* must be a power of 2 */
/**
* struct sub_seq - container for all published instances of a name sequence
* @lower: name sequence lower bound
* @upper: name sequence upper bound
* struct name_info - name sequence publication info
* @node_list: circular list of publications made by own node
* @cluster_list: circular list of publications made by own cluster
* @zone_list: circular list of publications made by own zone
@ -59,17 +57,28 @@ static int tipc_nametbl_size = 1024; /* must be a power of 2 */
* (The cluster and node lists may be empty.)
*/
struct sub_seq {
u32 lower;
u32 upper;
struct publication *node_list;
struct publication *cluster_list;
struct publication *zone_list;
struct name_info {
struct list_head node_list;
struct list_head cluster_list;
struct list_head zone_list;
u32 node_list_size;
u32 cluster_list_size;
u32 zone_list_size;
};
/**
* struct sub_seq - container for all published instances of a name sequence
* @lower: name sequence lower bound
* @upper: name sequence upper bound
* @info: pointer to name sequence publication info
*/
struct sub_seq {
u32 lower;
u32 upper;
struct name_info *info;
};
/**
* struct name_seq - container for all published instances of a name type
* @type: 32 bit 'type' value for name sequence
@ -246,6 +255,7 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
struct subscription *st;
struct publication *publ;
struct sub_seq *sseq;
struct name_info *info;
int created_subseq = 0;
sseq = nameseq_find_subseq(nseq, lower);
@ -258,6 +268,8 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
type, lower, upper);
return NULL;
}
info = sseq->info;
} else {
u32 inspos;
struct sub_seq *freesseq;
@ -292,6 +304,17 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
nseq->alloc *= 2;
}
info = kzalloc(sizeof(*info), GFP_ATOMIC);
if (!info) {
warn("Cannot publish {%u,%u,%u}, no memory\n",
type, lower, upper);
return NULL;
}
INIT_LIST_HEAD(&info->node_list);
INIT_LIST_HEAD(&info->cluster_list);
INIT_LIST_HEAD(&info->zone_list);
/* Insert new sub-sequence */
sseq = &nseq->sseqs[inspos];
@ -301,6 +324,7 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
nseq->first_free++;
sseq->lower = lower;
sseq->upper = upper;
sseq->info = info;
created_subseq = 1;
}
@ -310,33 +334,17 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
if (!publ)
return NULL;
sseq->zone_list_size++;
if (!sseq->zone_list)
sseq->zone_list = publ->zone_list_next = publ;
else {
publ->zone_list_next = sseq->zone_list->zone_list_next;
sseq->zone_list->zone_list_next = publ;
}
list_add(&publ->zone_list, &info->zone_list);
info->zone_list_size++;
if (in_own_cluster(node)) {
sseq->cluster_list_size++;
if (!sseq->cluster_list)
sseq->cluster_list = publ->cluster_list_next = publ;
else {
publ->cluster_list_next =
sseq->cluster_list->cluster_list_next;
sseq->cluster_list->cluster_list_next = publ;
}
list_add(&publ->cluster_list, &info->cluster_list);
info->cluster_list_size++;
}
if (node == tipc_own_addr) {
sseq->node_list_size++;
if (!sseq->node_list)
sseq->node_list = publ->node_list_next = publ;
else {
publ->node_list_next = sseq->node_list->node_list_next;
sseq->node_list->node_list_next = publ;
}
list_add(&publ->node_list, &info->node_list);
info->node_list_size++;
}
/*
@ -370,9 +378,8 @@ static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 i
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 name_info *info;
struct sub_seq *free;
struct subscription *s, *st;
int removed_subseq = 0;
@ -380,96 +387,41 @@ static struct publication *tipc_nameseq_remove_publ(struct name_seq *nseq, u32 i
if (!sseq)
return NULL;
info = sseq->info;
/* Locate publication, if it exists */
list_for_each_entry(publ, &info->zone_list, zone_list) {
if ((publ->key == key) && (publ->ref == ref) &&
(!publ->node || (publ->node == node)))
goto found;
}
return NULL;
found:
/* 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;
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;
else if (publ->zone_list_next != publ) {
prev->zone_list_next = publ->zone_list_next;
sseq->zone_list = publ->zone_list_next;
} else {
sseq->zone_list = NULL;
}
sseq->zone_list_size--;
list_del(&publ->zone_list);
info->zone_list_size--;
/* Remove publication from cluster scope list, if present */
if (in_own_cluster(node)) {
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;
else if (publ->cluster_list_next != publ) {
prev->cluster_list_next = publ->cluster_list_next;
sseq->cluster_list = publ->cluster_list_next;
} else {
sseq->cluster_list = NULL;
}
sseq->cluster_list_size--;
list_del(&publ->cluster_list);
info->cluster_list_size--;
}
end_cluster:
/* Remove publication from node scope list, if present */
if (node == tipc_own_addr) {
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;
else if (publ->node_list_next != publ) {
prev->node_list_next = publ->node_list_next;
sseq->node_list = publ->node_list_next;
} else {
sseq->node_list = NULL;
}
sseq->node_list_size--;
list_del(&publ->node_list);
info->node_list_size--;
}
end_node:
/* Contract subseq list if no more publications for that subseq */
if (!sseq->zone_list) {
if (list_empty(&info->zone_list)) {
kfree(info);
free = &nseq->sseqs[nseq->first_free--];
memmove(sseq, sseq + 1, (free - (sseq + 1)) * sizeof(*sseq));
removed_subseq = 1;
@ -506,12 +458,12 @@ static void tipc_nameseq_subscribe(struct name_seq *nseq, struct subscription *s
return;
while (sseq != &nseq->sseqs[nseq->first_free]) {
struct publication *zl = sseq->zone_list;
if (zl && tipc_subscr_overlap(s, sseq->lower, sseq->upper)) {
struct publication *crs = zl;
if (tipc_subscr_overlap(s, sseq->lower, sseq->upper)) {
struct publication *crs;
struct name_info *info = sseq->info;
int must_report = 1;
do {
list_for_each_entry(crs, &info->zone_list, zone_list) {
tipc_subscr_report_overlap(s,
sseq->lower,
sseq->upper,
@ -520,8 +472,7 @@ static void tipc_nameseq_subscribe(struct name_seq *nseq, struct subscription *s
crs->node,
must_report);
must_report = 0;
crs = crs->zone_list_next;
} while (crs != zl);
}
}
sseq++;
}
@ -591,9 +542,10 @@ struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower,
u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *destnode)
{
struct sub_seq *sseq;
struct publication *publ = NULL;
struct name_info *info;
struct publication *publ;
struct name_seq *seq;
u32 ref;
u32 ref = 0;
if (!tipc_in_scope(*destnode, tipc_own_addr))
return 0;
@ -606,55 +558,57 @@ u32 tipc_nametbl_translate(u32 type, u32 instance, u32 *destnode)
if (unlikely(!sseq))
goto not_found;
spin_lock_bh(&seq->lock);
info = sseq->info;
/* Closest-First Algorithm: */
if (likely(!*destnode)) {
publ = sseq->node_list;
if (publ) {
sseq->node_list = publ->node_list_next;
found:
ref = publ->ref;
*destnode = publ->node;
spin_unlock_bh(&seq->lock);
read_unlock_bh(&tipc_nametbl_lock);
return ref;
}
publ = sseq->cluster_list;
if (publ) {
sseq->cluster_list = publ->cluster_list_next;
goto found;
}
publ = sseq->zone_list;
if (publ) {
sseq->zone_list = publ->zone_list_next;
goto found;
if (!list_empty(&info->node_list)) {
publ = list_first_entry(&info->node_list,
struct publication,
node_list);
list_move_tail(&publ->node_list,
&info->node_list);
} else if (!list_empty(&info->cluster_list)) {
publ = list_first_entry(&info->cluster_list,
struct publication,
cluster_list);
list_move_tail(&publ->cluster_list,
&info->cluster_list);
} else {
publ = list_first_entry(&info->zone_list,
struct publication,
zone_list);
list_move_tail(&publ->zone_list,
&info->zone_list);
}
}
/* Round-Robin Algorithm: */
else if (*destnode == tipc_own_addr) {
publ = sseq->node_list;
if (publ) {
sseq->node_list = publ->node_list_next;
goto found;
}
if (list_empty(&info->node_list))
goto no_match;
publ = list_first_entry(&info->node_list, struct publication,
node_list);
list_move_tail(&publ->node_list, &info->node_list);
} else if (in_own_cluster(*destnode)) {
publ = sseq->cluster_list;
if (publ) {
sseq->cluster_list = publ->cluster_list_next;
goto found;
}
if (list_empty(&info->cluster_list))
goto no_match;
publ = list_first_entry(&info->cluster_list, struct publication,
cluster_list);
list_move_tail(&publ->cluster_list, &info->cluster_list);
} else {
publ = sseq->zone_list;
if (publ) {
sseq->zone_list = publ->zone_list_next;
goto found;
}
publ = list_first_entry(&info->zone_list, struct publication,
zone_list);
list_move_tail(&publ->zone_list, &info->zone_list);
}
ref = publ->ref;
*destnode = publ->node;
no_match:
spin_unlock_bh(&seq->lock);
not_found:
read_unlock_bh(&tipc_nametbl_lock);
return 0;
return ref;
}
/**
@ -676,6 +630,7 @@ int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit,
struct name_seq *seq;
struct sub_seq *sseq;
struct sub_seq *sseq_stop;
struct name_info *info;
int res = 0;
read_lock_bh(&tipc_nametbl_lock);
@ -693,16 +648,13 @@ int tipc_nametbl_mc_translate(u32 type, u32 lower, u32 upper, u32 limit,
if (sseq->lower > upper)
break;
publ = sseq->node_list;
if (publ) {
do {
if (publ->scope <= limit)
tipc_port_list_add(dports, publ->ref);
publ = publ->node_list_next;
} while (publ != sseq->node_list);
info = sseq->info;
list_for_each_entry(publ, &info->node_list, node_list) {
if (publ->scope <= limit)
tipc_port_list_add(dports, publ->ref);
}
if (sseq->cluster_list_size != sseq->node_list_size)
if (info->cluster_list_size != info->node_list_size)
res = 1;
}
@ -840,16 +792,19 @@ static void subseq_list(struct sub_seq *sseq, struct print_buf *buf, u32 depth,
{
char portIdStr[27];
const char *scope_str[] = {"", " zone", " cluster", " node"};
struct publication *publ = sseq->zone_list;
struct publication *publ;
struct name_info *info;
tipc_printf(buf, "%-10u %-10u ", sseq->lower, sseq->upper);
if (depth == 2 || !publ) {
if (depth == 2) {
tipc_printf(buf, "\n");
return;
}
do {
info = sseq->info;
list_for_each_entry(publ, &info->zone_list, zone_list) {
sprintf(portIdStr, "<%u.%u.%u:%u>",
tipc_zone(publ->node), tipc_cluster(publ->node),
tipc_node(publ->node), publ->ref);
@ -858,13 +813,9 @@ static void subseq_list(struct sub_seq *sseq, struct print_buf *buf, u32 depth,
tipc_printf(buf, "%-10u %s", publ->key,
scope_str[publ->scope]);
}
publ = publ->zone_list_next;
if (publ == sseq->zone_list)
break;
tipc_printf(buf, "\n%33s", " ");
} while (1);
if (!list_is_last(&publ->zone_list, &info->zone_list))
tipc_printf(buf, "\n%33s", " ");
};
tipc_printf(buf, "\n");
}

14
net/tipc/name_table.h
View File

@ -2,7 +2,7 @@
* net/tipc/name_table.h: Include file for TIPC name table code
*
* Copyright (c) 2000-2006, Ericsson AB
* Copyright (c) 2004-2005, Wind River Systems
* Copyright (c) 2004-2005, 2010-2011, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -61,9 +61,9 @@ struct port_list;
* @subscr: subscription to "node down" event (for off-node publications only)
* @local_list: adjacent entries in list of publications made by this node
* @pport_list: adjacent entries in list of publications made by this port
* @node_list: next matching name seq publication with >= node scope
* @cluster_list: next matching name seq publication with >= cluster scope
* @zone_list: next matching name seq publication with >= zone scope
* @node_list: adjacent matching name seq publications with >= node scope
* @cluster_list: adjacent matching name seq publications with >= cluster scope
* @zone_list: adjacent matching name seq publications with >= zone scope
*
* Note that the node list, cluster list, and zone list are circular lists.
*/
@ -79,9 +79,9 @@ struct publication {
struct tipc_node_subscr subscr;
struct list_head local_list;
struct list_head pport_list;
struct publication *node_list_next;
struct publication *cluster_list_next;
struct publication *zone_list_next;
struct list_head node_list;
struct list_head cluster_list;
struct list_head zone_list;
};

282
net/tipc/port.c
View File

@ -222,7 +222,7 @@ struct tipc_port *tipc_createport_raw(void *usr_handle,
p_ptr->max_pkt = MAX_PKT_DEFAULT;
p_ptr->ref = ref;
msg = &p_ptr->phdr;
tipc_msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0);
tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0);
msg_set_origport(msg, ref);
INIT_LIST_HEAD(&p_ptr->wait_list);
INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list);
@ -327,26 +327,23 @@ int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable)
}
/*
* port_build_proto_msg(): build a port level protocol
* or a connection abortion message. Called with
* tipc_port lock on.
* port_build_proto_msg(): create connection protocol message for port
*
* On entry the port must be locked and connected.
*/
static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode,
u32 origport, u32 orignode,
u32 usr, u32 type, u32 err,
u32 ack)
static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr,
u32 type, u32 ack)
{
struct sk_buff *buf;
struct tipc_msg *msg;
buf = tipc_buf_acquire(LONG_H_SIZE);
buf = tipc_buf_acquire(INT_H_SIZE);
if (buf) {
msg = buf_msg(buf);
tipc_msg_init(msg, usr, type, LONG_H_SIZE, destnode);
msg_set_errcode(msg, err);
msg_set_destport(msg, destport);
msg_set_origport(msg, origport);
msg_set_orignode(msg, orignode);
tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE,
port_peernode(p_ptr));
msg_set_destport(msg, port_peerport(p_ptr));
msg_set_origport(msg, p_ptr->ref);
msg_set_msgcnt(msg, ack);
}
return buf;
@ -358,45 +355,48 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err)
struct sk_buff *rbuf;
struct tipc_msg *rmsg;
int hdr_sz;
u32 imp = msg_importance(msg);
u32 imp;
u32 data_sz = msg_data_sz(msg);
if (data_sz > MAX_REJECT_SIZE)
data_sz = MAX_REJECT_SIZE;
if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE))
imp++;
u32 src_node;
u32 rmsg_sz;
/* discard rejected message if it shouldn't be returned to sender */
if (msg_errcode(msg) || msg_dest_droppable(msg)) {
buf_discard(buf);
return data_sz;
}
/* construct rejected message */
if (msg_mcast(msg))
hdr_sz = MCAST_H_SIZE;
else
hdr_sz = LONG_H_SIZE;
rbuf = tipc_buf_acquire(data_sz + hdr_sz);
if (rbuf == NULL) {
buf_discard(buf);
return data_sz;
if (WARN(!msg_isdata(msg),
"attempt to reject message with user=%u", msg_user(msg))) {
dump_stack();
goto exit;
}
if (msg_errcode(msg) || msg_dest_droppable(msg))
goto exit;
/*
* construct returned message by copying rejected message header and
* data (or subset), then updating header fields that need adjusting
*/
hdr_sz = msg_hdr_sz(msg);
rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE);
rbuf = tipc_buf_acquire(rmsg_sz);
if (rbuf == NULL)
goto exit;
rmsg = buf_msg(rbuf);
tipc_msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg));
msg_set_errcode(rmsg, err);
msg_set_destport(rmsg, msg_origport(msg));
msg_set_origport(rmsg, msg_destport(msg));
if (msg_short(msg)) {
msg_set_orignode(rmsg, tipc_own_addr);
/* leave name type & instance as zeroes */
} else {
msg_set_orignode(rmsg, msg_destnode(msg));
msg_set_nametype(rmsg, msg_nametype(msg));
msg_set_nameinst(rmsg, msg_nameinst(msg));
skb_copy_to_linear_data(rbuf, msg, rmsg_sz);
if (msg_connected(rmsg)) {
imp = msg_importance(rmsg);
if (imp < TIPC_CRITICAL_IMPORTANCE)
msg_set_importance(rmsg, ++imp);
}
msg_set_size(rmsg, data_sz + hdr_sz);
skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz);
msg_set_non_seq(rmsg, 0);
msg_set_size(rmsg, rmsg_sz);
msg_set_errcode(rmsg, err);
msg_set_prevnode(rmsg, tipc_own_addr);
msg_swap_words(rmsg, 4, 5);
if (!msg_short(rmsg))
msg_swap_words(rmsg, 6, 7);
/* send self-abort message when rejecting on a connected port */
if (msg_connected(msg)) {
@ -411,9 +411,15 @@ int tipc_reject_msg(struct sk_buff *buf, u32 err)
tipc_net_route_msg(abuf);
}
/* send rejected message */
/* send returned message & dispose of rejected message */
src_node = msg_prevnode(msg);
if (src_node == tipc_own_addr)
tipc_port_recv_msg(rbuf);
else
tipc_link_send(rbuf, src_node, msg_link_selector(rmsg));
exit:
buf_discard(buf);
tipc_net_route_msg(rbuf);
return data_sz;
}
@ -449,14 +455,7 @@ static void port_timeout(unsigned long ref)
if (p_ptr->probing_state == PROBING) {
buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
} else {
buf = port_build_proto_msg(port_peerport(p_ptr),
port_peernode(p_ptr),
p_ptr->ref,
tipc_own_addr,
CONN_MANAGER,
CONN_PROBE,
TIPC_OK,
0);
buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0);
p_ptr->probing_state = PROBING;
k_start_timer(&p_ptr->timer, p_ptr->probing_interval);
}
@ -480,100 +479,94 @@ static void port_handle_node_down(unsigned long ref)
static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err)
{
u32 imp = msg_importance(&p_ptr->phdr);
struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err);
if (!p_ptr->connected)
return NULL;
if (imp < TIPC_CRITICAL_IMPORTANCE)
imp++;
return port_build_proto_msg(p_ptr->ref,
tipc_own_addr,
port_peerport(p_ptr),
port_peernode(p_ptr),
imp,
TIPC_CONN_MSG,
err,
0);
if (buf) {
struct tipc_msg *msg = buf_msg(buf);
msg_swap_words(msg, 4, 5);
msg_swap_words(msg, 6, 7);
}
return buf;
}
static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err)
{
u32 imp = msg_importance(&p_ptr->phdr);
struct sk_buff *buf;
struct tipc_msg *msg;
u32 imp;
if (!p_ptr->connected)
return NULL;
if (imp < TIPC_CRITICAL_IMPORTANCE)
imp++;
return port_build_proto_msg(port_peerport(p_ptr),
port_peernode(p_ptr),
p_ptr->ref,
tipc_own_addr,
imp,
TIPC_CONN_MSG,
err,
0);
buf = tipc_buf_acquire(BASIC_H_SIZE);
if (buf) {
msg = buf_msg(buf);
memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE);
msg_set_hdr_sz(msg, BASIC_H_SIZE);
msg_set_size(msg, BASIC_H_SIZE);
imp = msg_importance(msg);
if (imp < TIPC_CRITICAL_IMPORTANCE)
msg_set_importance(msg, ++imp);
msg_set_errcode(msg, err);
}
return buf;
}
void tipc_port_recv_proto_msg(struct sk_buff *buf)
{
struct tipc_msg *msg = buf_msg(buf);
struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg));
u32 err = TIPC_OK;
struct tipc_port *p_ptr;
struct sk_buff *r_buf = NULL;
struct sk_buff *abort_buf = NULL;
u32 orignode = msg_orignode(msg);
u32 origport = msg_origport(msg);
u32 destport = msg_destport(msg);
int wakeable;
if (!p_ptr) {
err = TIPC_ERR_NO_PORT;
} else if (p_ptr->connected) {
if ((port_peernode(p_ptr) != msg_orignode(msg)) ||
(port_peerport(p_ptr) != msg_origport(msg))) {
err = TIPC_ERR_NO_PORT;
} else if (msg_type(msg) == CONN_ACK) {
int wakeup = tipc_port_congested(p_ptr) &&
p_ptr->congested &&
p_ptr->wakeup;
p_ptr->acked += msg_msgcnt(msg);
if (tipc_port_congested(p_ptr))
goto exit;
p_ptr->congested = 0;
if (!wakeup)
goto exit;
p_ptr->wakeup(p_ptr);
goto exit;
/* Validate connection */
p_ptr = tipc_port_lock(destport);
if (!p_ptr || !p_ptr->connected ||
(port_peernode(p_ptr) != orignode) ||
(port_peerport(p_ptr) != origport)) {
r_buf = tipc_buf_acquire(BASIC_H_SIZE);
if (r_buf) {
msg = buf_msg(r_buf);
tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG,
BASIC_H_SIZE, orignode);
msg_set_errcode(msg, TIPC_ERR_NO_PORT);
msg_set_origport(msg, destport);
msg_set_destport(msg, origport);
}
} else if (p_ptr->published) {
err = TIPC_ERR_NO_PORT;
}
if (err) {
r_buf = port_build_proto_msg(msg_origport(msg),
msg_orignode(msg),
msg_destport(msg),
tipc_own_addr,
TIPC_HIGH_IMPORTANCE,
TIPC_CONN_MSG,
err,
0);
if (p_ptr)
tipc_port_unlock(p_ptr);
goto exit;
}
/* All is fine */
if (msg_type(msg) == CONN_PROBE) {
r_buf = port_build_proto_msg(msg_origport(msg),
msg_orignode(msg),
msg_destport(msg),
tipc_own_addr,
CONN_MANAGER,
CONN_PROBE_REPLY,
TIPC_OK,
0);
/* Process protocol message sent by peer */
switch (msg_type(msg)) {
case CONN_ACK:
wakeable = tipc_port_congested(p_ptr) && p_ptr->congested &&
p_ptr->wakeup;
p_ptr->acked += msg_msgcnt(msg);
if (!tipc_port_congested(p_ptr)) {
p_ptr->congested = 0;
if (wakeable)
p_ptr->wakeup(p_ptr);
}
break;
case CONN_PROBE:
r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0);
break;
default:
/* CONN_PROBE_REPLY or unrecognized - no action required */
break;
}
p_ptr->probing_state = CONFIRMED;
tipc_port_unlock(p_ptr);
exit:
if (p_ptr)
tipc_port_unlock(p_ptr);
tipc_net_route_msg(r_buf);
tipc_net_route_msg(abort_buf);
buf_discard(buf);
}
@ -889,14 +882,7 @@ void tipc_acknowledge(u32 ref, u32 ack)
return;
if (p_ptr->connected) {
p_ptr->conn_unacked -= ack;
buf = port_build_proto_msg(port_peerport(p_ptr),
port_peernode(p_ptr),
ref,
tipc_own_addr,
CONN_MANAGER,
CONN_ACK,
TIPC_OK,
ack);
buf = port_build_proto_msg(p_ptr, CONN_ACK, ack);
}
tipc_port_unlock(p_ptr);
tipc_net_route_msg(buf);
@ -1140,19 +1126,7 @@ int tipc_shutdown(u32 ref)
if (!p_ptr)
return -EINVAL;
if (p_ptr->connected) {
u32 imp = msg_importance(&p_ptr->phdr);
if (imp < TIPC_CRITICAL_IMPORTANCE)
imp++;
buf = port_build_proto_msg(port_peerport(p_ptr),
port_peernode(p_ptr),
ref,
tipc_own_addr,
imp,
TIPC_CONN_MSG,
TIPC_CONN_SHUTDOWN,
0);
}
buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN);
tipc_port_unlock(p_ptr);
tipc_net_route_msg(buf);
return tipc_disconnect(ref);
@ -1238,7 +1212,7 @@ int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain,
msg_set_type(msg, TIPC_NAMED_MSG);
msg_set_orignode(msg, tipc_own_addr);
msg_set_origport(msg, ref);
msg_set_hdr_sz(msg, LONG_H_SIZE);
msg_set_hdr_sz(msg, NAMED_H_SIZE);
msg_set_nametype(msg, name->type);
msg_set_nameinst(msg, name->instance);
msg_set_lookup_scope(msg, tipc_addr_scope(domain));
@ -1291,7 +1265,7 @@ int tipc_send2port(u32 ref, struct tipc_portid const *dest,
msg_set_origport(msg, ref);
msg_set_destnode(msg, dest->node);
msg_set_destport(msg, dest->ref);
msg_set_hdr_sz(msg, DIR_MSG_H_SIZE);
msg_set_hdr_sz(msg, BASIC_H_SIZE);
if (dest->node == tipc_own_addr)
res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect,
@ -1331,13 +1305,13 @@ int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest,
msg_set_origport(msg, ref);
msg_set_destnode(msg, dest->node);
msg_set_destport(msg, dest->ref);
msg_set_hdr_sz(msg, DIR_MSG_H_SIZE);
msg_set_size(msg, DIR_MSG_H_SIZE + dsz);
if (skb_cow(buf, DIR_MSG_H_SIZE))
msg_set_hdr_sz(msg, BASIC_H_SIZE);
msg_set_size(msg, BASIC_H_SIZE + dsz);
if (skb_cow(buf, BASIC_H_SIZE))
return -ENOMEM;
skb_push(buf, DIR_MSG_H_SIZE);
skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE);
skb_push(buf, BASIC_H_SIZE);
skb_copy_to_linear_data(buf, msg, BASIC_H_SIZE);
if (dest->node == tipc_own_addr)
res = tipc_port_recv_msg(buf);

3
net/tipc/socket.c
View File

@ -36,9 +36,6 @@
#include <net/sock.h>
#include <linux/tipc.h>
#include <linux/tipc_config.h>
#include "core.h"
#include "port.h"