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-rw-r--r--net/tipc/bearer.c190
1 files changed, 73 insertions, 117 deletions
diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index e2202de3d93e..329fb659fae4 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -41,7 +41,7 @@
#define MAX_ADDR_STR 32
-static struct media media_list[MAX_MEDIA];
+static struct tipc_media *media_list[MAX_MEDIA];
static u32 media_count;
struct tipc_bearer tipc_bearers[MAX_BEARERS];
@@ -65,17 +65,31 @@ static int media_name_valid(const char *name)
}
/**
- * media_find - locates specified media object by name
+ * tipc_media_find - locates specified media object by name
*/
-static struct media *media_find(const char *name)
+struct tipc_media *tipc_media_find(const char *name)
{
- struct media *m_ptr;
u32 i;
- for (i = 0, m_ptr = media_list; i < media_count; i++, m_ptr++) {
- if (!strcmp(m_ptr->name, name))
- return m_ptr;
+ for (i = 0; i < media_count; i++) {
+ if (!strcmp(media_list[i]->name, name))
+ return media_list[i];
+ }
+ return NULL;
+}
+
+/**
+ * media_find_id - locates specified media object by type identifier
+ */
+
+static struct tipc_media *media_find_id(u8 type)
+{
+ u32 i;
+
+ for (i = 0; i < media_count; i++) {
+ if (media_list[i]->type_id == type)
+ return media_list[i];
}
return NULL;
}
@@ -86,87 +100,34 @@ static struct media *media_find(const char *name)
* Bearers for this media type must be activated separately at a later stage.
*/
-int tipc_register_media(u32 media_type,
- char *name,
- int (*enable)(struct tipc_bearer *),
- void (*disable)(struct tipc_bearer *),
- int (*send_msg)(struct sk_buff *,
- struct tipc_bearer *,
- struct tipc_media_addr *),
- char *(*addr2str)(struct tipc_media_addr *a,
- char *str_buf, int str_size),
- struct tipc_media_addr *bcast_addr,
- const u32 bearer_priority,
- const u32 link_tolerance, /* [ms] */
- const u32 send_window_limit)
+int tipc_register_media(struct tipc_media *m_ptr)
{
- struct media *m_ptr;
- u32 media_id;
- u32 i;
int res = -EINVAL;
write_lock_bh(&tipc_net_lock);
- if (tipc_mode != TIPC_NET_MODE) {
- warn("Media <%s> rejected, not in networked mode yet\n", name);
+ if (!media_name_valid(m_ptr->name))
goto exit;
- }
- if (!media_name_valid(name)) {
- warn("Media <%s> rejected, illegal name\n", name);
+ if ((m_ptr->bcast_addr.media_id != m_ptr->type_id) ||
+ !m_ptr->bcast_addr.broadcast)
goto exit;
- }
- if (!bcast_addr) {
- warn("Media <%s> rejected, no broadcast address\n", name);
+ if (m_ptr->priority > TIPC_MAX_LINK_PRI)
goto exit;
- }
- if ((bearer_priority < TIPC_MIN_LINK_PRI) ||
- (bearer_priority > TIPC_MAX_LINK_PRI)) {
- warn("Media <%s> rejected, illegal priority (%u)\n", name,
- bearer_priority);
+ if ((m_ptr->tolerance < TIPC_MIN_LINK_TOL) ||
+ (m_ptr->tolerance > TIPC_MAX_LINK_TOL))
goto exit;
- }
- if ((link_tolerance < TIPC_MIN_LINK_TOL) ||
- (link_tolerance > TIPC_MAX_LINK_TOL)) {
- warn("Media <%s> rejected, illegal tolerance (%u)\n", name,
- link_tolerance);
+ if (media_count >= MAX_MEDIA)
goto exit;
- }
-
- media_id = media_count++;
- if (media_id >= MAX_MEDIA) {
- warn("Media <%s> rejected, media limit reached (%u)\n", name,
- MAX_MEDIA);
- media_count--;
+ if (tipc_media_find(m_ptr->name) || media_find_id(m_ptr->type_id))
goto exit;
- }
- for (i = 0; i < media_id; i++) {
- if (media_list[i].type_id == media_type) {
- warn("Media <%s> rejected, duplicate type (%u)\n", name,
- media_type);
- media_count--;
- goto exit;
- }
- if (!strcmp(name, media_list[i].name)) {
- warn("Media <%s> rejected, duplicate name\n", name);
- media_count--;
- goto exit;
- }
- }
- m_ptr = &media_list[media_id];
- m_ptr->type_id = media_type;
- m_ptr->send_msg = send_msg;
- m_ptr->enable_bearer = enable;
- m_ptr->disable_bearer = disable;
- m_ptr->addr2str = addr2str;
- memcpy(&m_ptr->bcast_addr, bcast_addr, sizeof(*bcast_addr));
- strcpy(m_ptr->name, name);
- m_ptr->priority = bearer_priority;
- m_ptr->tolerance = link_tolerance;
- m_ptr->window = send_window_limit;
+ media_list[media_count] = m_ptr;
+ media_count++;
res = 0;
exit:
write_unlock_bh(&tipc_net_lock);
+ if (res)
+ warn("Media <%s> registration error\n", m_ptr->name);
return res;
}
@@ -176,27 +137,19 @@ exit:
void tipc_media_addr_printf(struct print_buf *pb, struct tipc_media_addr *a)
{
- struct media *m_ptr;
- u32 media_type;
- u32 i;
+ char addr_str[MAX_ADDR_STR];
+ struct tipc_media *m_ptr;
- media_type = ntohl(a->type);
- for (i = 0, m_ptr = media_list; i < media_count; i++, m_ptr++) {
- if (m_ptr->type_id == media_type)
- break;
- }
-
- if ((i < media_count) && (m_ptr->addr2str != NULL)) {
- char addr_str[MAX_ADDR_STR];
+ m_ptr = media_find_id(a->media_id);
- tipc_printf(pb, "%s(%s)", m_ptr->name,
- m_ptr->addr2str(a, addr_str, sizeof(addr_str)));
- } else {
- unchar *addr = (unchar *)&a->dev_addr;
+ if (m_ptr && !m_ptr->addr2str(a, addr_str, sizeof(addr_str)))
+ tipc_printf(pb, "%s(%s)", m_ptr->name, addr_str);
+ else {
+ u32 i;
- tipc_printf(pb, "UNKNOWN(%u)", media_type);
- for (i = 0; i < (sizeof(*a) - sizeof(a->type)); i++)
- tipc_printf(pb, "-%02x", addr[i]);
+ tipc_printf(pb, "UNKNOWN(%u)", a->media_id);
+ for (i = 0; i < sizeof(a->value); i++)
+ tipc_printf(pb, "-%02x", a->value[i]);
}
}
@@ -207,7 +160,6 @@ void tipc_media_addr_printf(struct print_buf *pb, struct tipc_media_addr *a)
struct sk_buff *tipc_media_get_names(void)
{
struct sk_buff *buf;
- struct media *m_ptr;
int i;
buf = tipc_cfg_reply_alloc(MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME));
@@ -215,9 +167,10 @@ struct sk_buff *tipc_media_get_names(void)
return NULL;
read_lock_bh(&tipc_net_lock);
- for (i = 0, m_ptr = media_list; i < media_count; i++, m_ptr++) {
- tipc_cfg_append_tlv(buf, TIPC_TLV_MEDIA_NAME, m_ptr->name,
- strlen(m_ptr->name) + 1);
+ for (i = 0; i < media_count; i++) {
+ tipc_cfg_append_tlv(buf, TIPC_TLV_MEDIA_NAME,
+ media_list[i]->name,
+ strlen(media_list[i]->name) + 1);
}
read_unlock_bh(&tipc_net_lock);
return buf;
@@ -232,7 +185,7 @@ struct sk_buff *tipc_media_get_names(void)
*/
static int bearer_name_validate(const char *name,
- struct bearer_name *name_parts)
+ struct tipc_bearer_names *name_parts)
{
char name_copy[TIPC_MAX_BEARER_NAME];
char *media_name;
@@ -276,10 +229,10 @@ static int bearer_name_validate(const char *name,
}
/**
- * bearer_find - locates bearer object with matching bearer name
+ * tipc_bearer_find - locates bearer object with matching bearer name
*/
-static struct tipc_bearer *bearer_find(const char *name)
+struct tipc_bearer *tipc_bearer_find(const char *name)
{
struct tipc_bearer *b_ptr;
u32 i;
@@ -318,7 +271,6 @@ struct tipc_bearer *tipc_bearer_find_interface(const char *if_name)
struct sk_buff *tipc_bearer_get_names(void)
{
struct sk_buff *buf;
- struct media *m_ptr;
struct tipc_bearer *b_ptr;
int i, j;
@@ -327,10 +279,10 @@ struct sk_buff *tipc_bearer_get_names(void)
return NULL;
read_lock_bh(&tipc_net_lock);
- for (i = 0, m_ptr = media_list; i < media_count; i++, m_ptr++) {
+ for (i = 0; i < media_count; i++) {
for (j = 0; j < MAX_BEARERS; j++) {
b_ptr = &tipc_bearers[j];
- if (b_ptr->active && (b_ptr->media == m_ptr)) {
+ if (b_ptr->active && (b_ptr->media == media_list[i])) {
tipc_cfg_append_tlv(buf, TIPC_TLV_BEARER_NAME,
b_ptr->name,
strlen(b_ptr->name) + 1);
@@ -366,7 +318,7 @@ void tipc_bearer_remove_dest(struct tipc_bearer *b_ptr, u32 dest)
static int bearer_push(struct tipc_bearer *b_ptr)
{
u32 res = 0;
- struct link *ln, *tln;
+ struct tipc_link *ln, *tln;
if (b_ptr->blocked)
return 0;
@@ -412,7 +364,8 @@ void tipc_continue(struct tipc_bearer *b_ptr)
* bearer.lock is busy
*/
-static void tipc_bearer_schedule_unlocked(struct tipc_bearer *b_ptr, struct link *l_ptr)
+static void tipc_bearer_schedule_unlocked(struct tipc_bearer *b_ptr,
+ struct tipc_link *l_ptr)
{
list_move_tail(&l_ptr->link_list, &b_ptr->cong_links);
}
@@ -425,7 +378,7 @@ static void tipc_bearer_schedule_unlocked(struct tipc_bearer *b_ptr, struct link
* bearer.lock is free
*/
-void tipc_bearer_schedule(struct tipc_bearer *b_ptr, struct link *l_ptr)
+void tipc_bearer_schedule(struct tipc_bearer *b_ptr, struct tipc_link *l_ptr)
{
spin_lock_bh(&b_ptr->lock);
tipc_bearer_schedule_unlocked(b_ptr, l_ptr);
@@ -438,7 +391,8 @@ void tipc_bearer_schedule(struct tipc_bearer *b_ptr, struct link *l_ptr)
* and if there is, try to resolve it before returning.
* 'tipc_net_lock' is read_locked when this function is called
*/
-int tipc_bearer_resolve_congestion(struct tipc_bearer *b_ptr, struct link *l_ptr)
+int tipc_bearer_resolve_congestion(struct tipc_bearer *b_ptr,
+ struct tipc_link *l_ptr)
{
int res = 1;
@@ -457,7 +411,7 @@ int tipc_bearer_resolve_congestion(struct tipc_bearer *b_ptr, struct link *l_ptr
* tipc_bearer_congested - determines if bearer is currently congested
*/
-int tipc_bearer_congested(struct tipc_bearer *b_ptr, struct link *l_ptr)
+int tipc_bearer_congested(struct tipc_bearer *b_ptr, struct tipc_link *l_ptr)
{
if (unlikely(b_ptr->blocked))
return 1;
@@ -473,8 +427,8 @@ int tipc_bearer_congested(struct tipc_bearer *b_ptr, struct link *l_ptr)
int tipc_enable_bearer(const char *name, u32 disc_domain, u32 priority)
{
struct tipc_bearer *b_ptr;
- struct media *m_ptr;
- struct bearer_name b_name;
+ struct tipc_media *m_ptr;
+ struct tipc_bearer_names b_names;
char addr_string[16];
u32 bearer_id;
u32 with_this_prio;
@@ -486,7 +440,7 @@ int tipc_enable_bearer(const char *name, u32 disc_domain, u32 priority)
name);
return -ENOPROTOOPT;
}
- if (!bearer_name_validate(name, &b_name)) {
+ if (!bearer_name_validate(name, &b_names)) {
warn("Bearer <%s> rejected, illegal name\n", name);
return -EINVAL;
}
@@ -511,10 +465,10 @@ int tipc_enable_bearer(const char *name, u32 disc_domain, u32 priority)
write_lock_bh(&tipc_net_lock);
- m_ptr = media_find(b_name.media_name);
+ m_ptr = tipc_media_find(b_names.media_name);
if (!m_ptr) {
warn("Bearer <%s> rejected, media <%s> not registered\n", name,
- b_name.media_name);
+ b_names.media_name);
goto exit;
}
@@ -561,6 +515,8 @@ restart:
b_ptr->identity = bearer_id;
b_ptr->media = m_ptr;
+ b_ptr->tolerance = m_ptr->tolerance;
+ b_ptr->window = m_ptr->window;
b_ptr->net_plane = bearer_id + 'A';
b_ptr->active = 1;
b_ptr->priority = priority;
@@ -590,11 +546,11 @@ exit:
int tipc_block_bearer(const char *name)
{
struct tipc_bearer *b_ptr = NULL;
- struct link *l_ptr;
- struct link *temp_l_ptr;
+ struct tipc_link *l_ptr;
+ struct tipc_link *temp_l_ptr;
read_lock_bh(&tipc_net_lock);
- b_ptr = bearer_find(name);
+ b_ptr = tipc_bearer_find(name);
if (!b_ptr) {
warn("Attempt to block unknown bearer <%s>\n", name);
read_unlock_bh(&tipc_net_lock);
@@ -625,8 +581,8 @@ int tipc_block_bearer(const char *name)
static void bearer_disable(struct tipc_bearer *b_ptr)
{
- struct link *l_ptr;
- struct link *temp_l_ptr;
+ struct tipc_link *l_ptr;
+ struct tipc_link *temp_l_ptr;
info("Disabling bearer <%s>\n", b_ptr->name);
spin_lock_bh(&b_ptr->lock);
@@ -648,7 +604,7 @@ int tipc_disable_bearer(const char *name)
int res;
write_lock_bh(&tipc_net_lock);
- b_ptr = bearer_find(name);
+ b_ptr = tipc_bearer_find(name);
if (b_ptr == NULL) {
warn("Attempt to disable unknown bearer <%s>\n", name);
res = -EINVAL;