aboutsummaryrefslogtreecommitdiff
path: root/net/tipc/link.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/tipc/link.c')
-rw-r--r--net/tipc/link.c346
1 files changed, 208 insertions, 138 deletions
diff --git a/net/tipc/link.c b/net/tipc/link.c
index ae98a72da11..ac1832a66f8 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -71,35 +71,36 @@
#define START_CHANGEOVER 100000u
/**
- * struct link_name - deconstructed link name
+ * struct tipc_link_name - deconstructed link name
* @addr_local: network address of node at this end
* @if_local: name of interface at this end
* @addr_peer: network address of node at far end
* @if_peer: name of interface at far end
*/
-struct link_name {
+struct tipc_link_name {
u32 addr_local;
char if_local[TIPC_MAX_IF_NAME];
u32 addr_peer;
char if_peer[TIPC_MAX_IF_NAME];
};
-static void link_handle_out_of_seq_msg(struct link *l_ptr,
+static void link_handle_out_of_seq_msg(struct tipc_link *l_ptr,
struct sk_buff *buf);
-static void link_recv_proto_msg(struct link *l_ptr, struct sk_buff *buf);
-static int link_recv_changeover_msg(struct link **l_ptr, struct sk_buff **buf);
-static void link_set_supervision_props(struct link *l_ptr, u32 tolerance);
+static void link_recv_proto_msg(struct tipc_link *l_ptr, struct sk_buff *buf);
+static int link_recv_changeover_msg(struct tipc_link **l_ptr,
+ struct sk_buff **buf);
+static void link_set_supervision_props(struct tipc_link *l_ptr, u32 tolerance);
static int link_send_sections_long(struct tipc_port *sender,
struct iovec const *msg_sect,
u32 num_sect, unsigned int total_len,
u32 destnode);
-static void link_check_defragm_bufs(struct link *l_ptr);
-static void link_state_event(struct link *l_ptr, u32 event);
-static void link_reset_statistics(struct link *l_ptr);
-static void link_print(struct link *l_ptr, const char *str);
-static void link_start(struct link *l_ptr);
-static int link_send_long_buf(struct link *l_ptr, struct sk_buff *buf);
+static void link_check_defragm_bufs(struct tipc_link *l_ptr);
+static void link_state_event(struct tipc_link *l_ptr, u32 event);
+static void link_reset_statistics(struct tipc_link *l_ptr);
+static void link_print(struct tipc_link *l_ptr, const char *str);
+static void link_start(struct tipc_link *l_ptr);
+static int link_send_long_buf(struct tipc_link *l_ptr, struct sk_buff *buf);
/*
* Simple link routines
@@ -110,7 +111,7 @@ static unsigned int align(unsigned int i)
return (i + 3) & ~3u;
}
-static void link_init_max_pkt(struct link *l_ptr)
+static void link_init_max_pkt(struct tipc_link *l_ptr)
{
u32 max_pkt;
@@ -127,14 +128,14 @@ static void link_init_max_pkt(struct link *l_ptr)
l_ptr->max_pkt_probes = 0;
}
-static u32 link_next_sent(struct link *l_ptr)
+static u32 link_next_sent(struct tipc_link *l_ptr)
{
if (l_ptr->next_out)
- return msg_seqno(buf_msg(l_ptr->next_out));
+ return buf_seqno(l_ptr->next_out);
return mod(l_ptr->next_out_no);
}
-static u32 link_last_sent(struct link *l_ptr)
+static u32 link_last_sent(struct tipc_link *l_ptr)
{
return mod(link_next_sent(l_ptr) - 1);
}
@@ -143,28 +144,29 @@ static u32 link_last_sent(struct link *l_ptr)
* Simple non-static link routines (i.e. referenced outside this file)
*/
-int tipc_link_is_up(struct link *l_ptr)
+int tipc_link_is_up(struct tipc_link *l_ptr)
{
if (!l_ptr)
return 0;
return link_working_working(l_ptr) || link_working_unknown(l_ptr);
}
-int tipc_link_is_active(struct link *l_ptr)
+int tipc_link_is_active(struct tipc_link *l_ptr)
{
return (l_ptr->owner->active_links[0] == l_ptr) ||
(l_ptr->owner->active_links[1] == l_ptr);
}
/**
- * link_name_validate - validate & (optionally) deconstruct link name
+ * link_name_validate - validate & (optionally) deconstruct tipc_link name
* @name - ptr to link name string
* @name_parts - ptr to area for link name components (or NULL if not needed)
*
* Returns 1 if link name is valid, otherwise 0.
*/
-static int link_name_validate(const char *name, struct link_name *name_parts)
+static int link_name_validate(const char *name,
+ struct tipc_link_name *name_parts)
{
char name_copy[TIPC_MAX_LINK_NAME];
char *addr_local;
@@ -238,7 +240,7 @@ static int link_name_validate(const char *name, struct link_name *name_parts)
* tipc_node_delete() is called.)
*/
-static void link_timeout(struct link *l_ptr)
+static void link_timeout(struct tipc_link *l_ptr)
{
tipc_node_lock(l_ptr->owner);
@@ -287,7 +289,7 @@ static void link_timeout(struct link *l_ptr)
tipc_node_unlock(l_ptr->owner);
}
-static void link_set_timer(struct link *l_ptr, u32 time)
+static void link_set_timer(struct tipc_link *l_ptr, u32 time)
{
k_start_timer(&l_ptr->timer, time);
}
@@ -301,11 +303,11 @@ static void link_set_timer(struct link *l_ptr, u32 time)
* Returns pointer to link.
*/
-struct link *tipc_link_create(struct tipc_node *n_ptr,
+struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
struct tipc_bearer *b_ptr,
const struct tipc_media_addr *media_addr)
{
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
struct tipc_msg *msg;
char *if_name;
char addr_string[16];
@@ -343,7 +345,7 @@ struct link *tipc_link_create(struct tipc_node *n_ptr,
l_ptr->checkpoint = 1;
l_ptr->peer_session = INVALID_SESSION;
l_ptr->b_ptr = b_ptr;
- link_set_supervision_props(l_ptr, b_ptr->media->tolerance);
+ link_set_supervision_props(l_ptr, b_ptr->tolerance);
l_ptr->state = RESET_UNKNOWN;
l_ptr->pmsg = (struct tipc_msg *)&l_ptr->proto_msg;
@@ -355,7 +357,7 @@ struct link *tipc_link_create(struct tipc_node *n_ptr,
strcpy((char *)msg_data(msg), if_name);
l_ptr->priority = b_ptr->priority;
- tipc_link_set_queue_limits(l_ptr, b_ptr->media->window);
+ tipc_link_set_queue_limits(l_ptr, b_ptr->window);
link_init_max_pkt(l_ptr);
@@ -382,7 +384,7 @@ struct link *tipc_link_create(struct tipc_node *n_ptr,
* to avoid a potential deadlock situation.
*/
-void tipc_link_delete(struct link *l_ptr)
+void tipc_link_delete(struct tipc_link *l_ptr)
{
if (!l_ptr) {
err("Attempt to delete non-existent link\n");
@@ -401,7 +403,7 @@ void tipc_link_delete(struct link *l_ptr)
kfree(l_ptr);
}
-static void link_start(struct link *l_ptr)
+static void link_start(struct tipc_link *l_ptr)
{
tipc_node_lock(l_ptr->owner);
link_state_event(l_ptr, STARTING_EVT);
@@ -418,7 +420,7 @@ static void link_start(struct link *l_ptr)
* has abated.
*/
-static int link_schedule_port(struct link *l_ptr, u32 origport, u32 sz)
+static int link_schedule_port(struct tipc_link *l_ptr, u32 origport, u32 sz)
{
struct tipc_port *p_ptr;
@@ -440,7 +442,7 @@ exit:
return -ELINKCONG;
}
-void tipc_link_wakeup_ports(struct link *l_ptr, int all)
+void tipc_link_wakeup_ports(struct tipc_link *l_ptr, int all)
{
struct tipc_port *p_ptr;
struct tipc_port *temp_p_ptr;
@@ -475,7 +477,7 @@ exit:
* @l_ptr: pointer to link
*/
-static void link_release_outqueue(struct link *l_ptr)
+static void link_release_outqueue(struct tipc_link *l_ptr)
{
struct sk_buff *buf = l_ptr->first_out;
struct sk_buff *next;
@@ -494,7 +496,7 @@ static void link_release_outqueue(struct link *l_ptr)
* @l_ptr: pointer to link
*/
-void tipc_link_reset_fragments(struct link *l_ptr)
+void tipc_link_reset_fragments(struct tipc_link *l_ptr)
{
struct sk_buff *buf = l_ptr->defragm_buf;
struct sk_buff *next;
@@ -512,7 +514,7 @@ void tipc_link_reset_fragments(struct link *l_ptr)
* @l_ptr: pointer to link
*/
-void tipc_link_stop(struct link *l_ptr)
+void tipc_link_stop(struct tipc_link *l_ptr)
{
struct sk_buff *buf;
struct sk_buff *next;
@@ -537,7 +539,7 @@ void tipc_link_stop(struct link *l_ptr)
l_ptr->proto_msg_queue = NULL;
}
-void tipc_link_reset(struct link *l_ptr)
+void tipc_link_reset(struct tipc_link *l_ptr)
{
struct sk_buff *buf;
u32 prev_state = l_ptr->state;
@@ -597,7 +599,7 @@ void tipc_link_reset(struct link *l_ptr)
}
-static void link_activate(struct link *l_ptr)
+static void link_activate(struct tipc_link *l_ptr)
{
l_ptr->next_in_no = l_ptr->stats.recv_info = 1;
tipc_node_link_up(l_ptr->owner, l_ptr);
@@ -610,9 +612,9 @@ static void link_activate(struct link *l_ptr)
* @event: state machine event to process
*/
-static void link_state_event(struct link *l_ptr, unsigned event)
+static void link_state_event(struct tipc_link *l_ptr, unsigned event)
{
- struct link *other;
+ struct tipc_link *other;
u32 cont_intv = l_ptr->continuity_interval;
if (!l_ptr->started && (event != STARTING_EVT))
@@ -784,7 +786,7 @@ static void link_state_event(struct link *l_ptr, unsigned event)
* the tail of an existing one.
*/
-static int link_bundle_buf(struct link *l_ptr,
+static int link_bundle_buf(struct tipc_link *l_ptr,
struct sk_buff *bundler,
struct sk_buff *buf)
{
@@ -813,7 +815,7 @@ static int link_bundle_buf(struct link *l_ptr,
return 1;
}
-static void link_add_to_outqueue(struct link *l_ptr,
+static void link_add_to_outqueue(struct tipc_link *l_ptr,
struct sk_buff *buf,
struct tipc_msg *msg)
{
@@ -834,7 +836,7 @@ static void link_add_to_outqueue(struct link *l_ptr,
l_ptr->stats.max_queue_sz = l_ptr->out_queue_size;
}
-static void link_add_chain_to_outqueue(struct link *l_ptr,
+static void link_add_chain_to_outqueue(struct tipc_link *l_ptr,
struct sk_buff *buf_chain,
u32 long_msgno)
{
@@ -859,7 +861,7 @@ static void link_add_chain_to_outqueue(struct link *l_ptr,
* has failed, and from link_send()
*/
-int tipc_link_send_buf(struct link *l_ptr, struct sk_buff *buf)
+int tipc_link_send_buf(struct tipc_link *l_ptr, struct sk_buff *buf)
{
struct tipc_msg *msg = buf_msg(buf);
u32 size = msg_size(msg);
@@ -954,7 +956,7 @@ int tipc_link_send_buf(struct link *l_ptr, struct sk_buff *buf)
int tipc_link_send(struct sk_buff *buf, u32 dest, u32 selector)
{
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
struct tipc_node *n_ptr;
int res = -ELINKCONG;
@@ -988,7 +990,7 @@ int tipc_link_send(struct sk_buff *buf, u32 dest, u32 selector)
void tipc_link_send_names(struct list_head *message_list, u32 dest)
{
struct tipc_node *n_ptr;
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
struct sk_buff *buf;
struct sk_buff *temp_buf;
@@ -1027,7 +1029,7 @@ void tipc_link_send_names(struct list_head *message_list, u32 dest)
* Link is locked. Returns user data length.
*/
-static int link_send_buf_fast(struct link *l_ptr, struct sk_buff *buf,
+static int link_send_buf_fast(struct tipc_link *l_ptr, struct sk_buff *buf,
u32 *used_max_pkt)
{
struct tipc_msg *msg = buf_msg(buf);
@@ -1061,7 +1063,7 @@ static int link_send_buf_fast(struct link *l_ptr, struct sk_buff *buf,
*/
int tipc_send_buf_fast(struct sk_buff *buf, u32 destnode)
{
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
struct tipc_node *n_ptr;
int res;
u32 selector = msg_origport(buf_msg(buf)) & 1;
@@ -1100,7 +1102,7 @@ int tipc_link_send_sections_fast(struct tipc_port *sender,
u32 destaddr)
{
struct tipc_msg *hdr = &sender->phdr;
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
struct sk_buff *buf;
struct tipc_node *node;
int res;
@@ -1195,7 +1197,7 @@ static int link_send_sections_long(struct tipc_port *sender,
unsigned int total_len,
u32 destaddr)
{
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
struct tipc_node *node;
struct tipc_msg *hdr = &sender->phdr;
u32 dsz = total_len;
@@ -1342,7 +1344,7 @@ reject:
/*
* tipc_link_push_packet: Push one unsent packet to the media
*/
-u32 tipc_link_push_packet(struct link *l_ptr)
+u32 tipc_link_push_packet(struct tipc_link *l_ptr)
{
struct sk_buff *buf = l_ptr->first_out;
u32 r_q_size = l_ptr->retransm_queue_size;
@@ -1354,7 +1356,7 @@ u32 tipc_link_push_packet(struct link *l_ptr)
if (r_q_size && buf) {
u32 last = lesser(mod(r_q_head + r_q_size),
link_last_sent(l_ptr));
- u32 first = msg_seqno(buf_msg(buf));
+ u32 first = buf_seqno(buf);
while (buf && less(first, r_q_head)) {
first = mod(first + 1);
@@ -1403,7 +1405,7 @@ u32 tipc_link_push_packet(struct link *l_ptr)
if (buf) {
struct tipc_msg *msg = buf_msg(buf);
u32 next = msg_seqno(msg);
- u32 first = msg_seqno(buf_msg(l_ptr->first_out));
+ u32 first = buf_seqno(l_ptr->first_out);
if (mod(next - first) < l_ptr->queue_limit[0]) {
msg_set_ack(msg, mod(l_ptr->next_in_no - 1));
@@ -1426,7 +1428,7 @@ u32 tipc_link_push_packet(struct link *l_ptr)
* push_queue(): push out the unsent messages of a link where
* congestion has abated. Node is locked
*/
-void tipc_link_push_queue(struct link *l_ptr)
+void tipc_link_push_queue(struct tipc_link *l_ptr)
{
u32 res;
@@ -1470,7 +1472,8 @@ static void link_reset_all(unsigned long addr)
read_unlock_bh(&tipc_net_lock);
}
-static void link_retransmit_failure(struct link *l_ptr, struct sk_buff *buf)
+static void link_retransmit_failure(struct tipc_link *l_ptr,
+ struct sk_buff *buf)
{
struct tipc_msg *msg = buf_msg(buf);
@@ -1514,7 +1517,7 @@ static void link_retransmit_failure(struct link *l_ptr, struct sk_buff *buf)
}
}
-void tipc_link_retransmit(struct link *l_ptr, struct sk_buff *buf,
+void tipc_link_retransmit(struct tipc_link *l_ptr, struct sk_buff *buf,
u32 retransmits)
{
struct tipc_msg *msg;
@@ -1558,7 +1561,7 @@ void tipc_link_retransmit(struct link *l_ptr, struct sk_buff *buf,
} else {
tipc_bearer_schedule(l_ptr->b_ptr, l_ptr);
l_ptr->stats.bearer_congs++;
- l_ptr->retransm_queue_head = msg_seqno(buf_msg(buf));
+ l_ptr->retransm_queue_head = buf_seqno(buf);
l_ptr->retransm_queue_size = retransmits;
return;
}
@@ -1571,7 +1574,7 @@ void tipc_link_retransmit(struct link *l_ptr, struct sk_buff *buf,
* link_insert_deferred_queue - insert deferred messages back into receive chain
*/
-static struct sk_buff *link_insert_deferred_queue(struct link *l_ptr,
+static struct sk_buff *link_insert_deferred_queue(struct tipc_link *l_ptr,
struct sk_buff *buf)
{
u32 seq_no;
@@ -1579,7 +1582,7 @@ static struct sk_buff *link_insert_deferred_queue(struct link *l_ptr,
if (l_ptr->oldest_deferred_in == NULL)
return buf;
- seq_no = msg_seqno(buf_msg(l_ptr->oldest_deferred_in));
+ seq_no = buf_seqno(l_ptr->oldest_deferred_in);
if (seq_no == mod(l_ptr->next_in_no)) {
l_ptr->newest_deferred_in->next = buf;
buf = l_ptr->oldest_deferred_in;
@@ -1653,7 +1656,7 @@ void tipc_recv_msg(struct sk_buff *head, struct tipc_bearer *b_ptr)
read_lock_bh(&tipc_net_lock);
while (head) {
struct tipc_node *n_ptr;
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
struct sk_buff *crs;
struct sk_buff *buf = head;
struct tipc_msg *msg;
@@ -1733,14 +1736,12 @@ void tipc_recv_msg(struct sk_buff *head, struct tipc_bearer *b_ptr)
/* Release acked messages */
- if (less(n_ptr->bclink.acked, msg_bcast_ack(msg))) {
- if (tipc_node_is_up(n_ptr) && n_ptr->bclink.supported)
- tipc_bclink_acknowledge(n_ptr, msg_bcast_ack(msg));
- }
+ if (tipc_node_is_up(n_ptr) && n_ptr->bclink.supported)
+ tipc_bclink_acknowledge(n_ptr, msg_bcast_ack(msg));
crs = l_ptr->first_out;
while ((crs != l_ptr->next_out) &&
- less_eq(msg_seqno(buf_msg(crs)), ackd)) {
+ less_eq(buf_seqno(crs), ackd)) {
struct sk_buff *next = crs->next;
buf_discard(crs);
@@ -1863,7 +1864,7 @@ u32 tipc_link_defer_pkt(struct sk_buff **head,
{
struct sk_buff *prev = NULL;
struct sk_buff *crs = *head;
- u32 seq_no = msg_seqno(buf_msg(buf));
+ u32 seq_no = buf_seqno(buf);
buf->next = NULL;
@@ -1874,7 +1875,7 @@ u32 tipc_link_defer_pkt(struct sk_buff **head,
}
/* Last ? */
- if (less(msg_seqno(buf_msg(*tail)), seq_no)) {
+ if (less(buf_seqno(*tail), seq_no)) {
(*tail)->next = buf;
*tail = buf;
return 1;
@@ -1908,10 +1909,10 @@ u32 tipc_link_defer_pkt(struct sk_buff **head,
* link_handle_out_of_seq_msg - handle arrival of out-of-sequence packet
*/
-static void link_handle_out_of_seq_msg(struct link *l_ptr,
+static void link_handle_out_of_seq_msg(struct tipc_link *l_ptr,
struct sk_buff *buf)
{
- u32 seq_no = msg_seqno(buf_msg(buf));
+ u32 seq_no = buf_seqno(buf);
if (likely(msg_user(buf_msg(buf)) == LINK_PROTOCOL)) {
link_recv_proto_msg(l_ptr, buf);
@@ -1946,8 +1947,9 @@ static void link_handle_out_of_seq_msg(struct link *l_ptr,
/*
* Send protocol message to the other endpoint.
*/
-void tipc_link_send_proto_msg(struct link *l_ptr, u32 msg_typ, int probe_msg,
- u32 gap, u32 tolerance, u32 priority, u32 ack_mtu)
+void tipc_link_send_proto_msg(struct tipc_link *l_ptr, u32 msg_typ,
+ int probe_msg, u32 gap, u32 tolerance,
+ u32 priority, u32 ack_mtu)
{
struct sk_buff *buf = NULL;
struct tipc_msg *msg = l_ptr->pmsg;
@@ -1973,10 +1975,10 @@ void tipc_link_send_proto_msg(struct link *l_ptr, u32 msg_typ, int probe_msg,
if (!tipc_link_is_up(l_ptr))
return;
if (l_ptr->next_out)
- next_sent = msg_seqno(buf_msg(l_ptr->next_out));
+ next_sent = buf_seqno(l_ptr->next_out);
msg_set_next_sent(msg, next_sent);
if (l_ptr->oldest_deferred_in) {
- u32 rec = msg_seqno(buf_msg(l_ptr->oldest_deferred_in));
+ u32 rec = buf_seqno(l_ptr->oldest_deferred_in);
gap = mod(rec - mod(l_ptr->next_in_no));
}
msg_set_seq_gap(msg, gap);
@@ -2064,7 +2066,7 @@ void tipc_link_send_proto_msg(struct link *l_ptr, u32 msg_typ, int probe_msg,
* change at any time. The node with lowest address rules
*/
-static void link_recv_proto_msg(struct link *l_ptr, struct sk_buff *buf)
+static void link_recv_proto_msg(struct tipc_link *l_ptr, struct sk_buff *buf)
{
u32 rec_gap = 0;
u32 max_pkt_info;
@@ -2197,12 +2199,12 @@ exit:
* tipc_link_tunnel(): Send one message via a link belonging to
* another bearer. Owner node is locked.
*/
-static void tipc_link_tunnel(struct link *l_ptr,
+static void tipc_link_tunnel(struct tipc_link *l_ptr,
struct tipc_msg *tunnel_hdr,
struct tipc_msg *msg,
u32 selector)
{
- struct link *tunnel;
+ struct tipc_link *tunnel;
struct sk_buff *buf;
u32 length = msg_size(msg);
@@ -2231,11 +2233,11 @@ static void tipc_link_tunnel(struct link *l_ptr,
* Owner node is locked.
*/
-void tipc_link_changeover(struct link *l_ptr)
+void tipc_link_changeover(struct tipc_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];
+ struct tipc_link *tunnel = l_ptr->owner->active_links[0];
struct tipc_msg tunnel_hdr;
int split_bundles;
@@ -2294,7 +2296,7 @@ void tipc_link_changeover(struct link *l_ptr)
}
}
-void tipc_link_send_duplicate(struct link *l_ptr, struct link *tunnel)
+void tipc_link_send_duplicate(struct tipc_link *l_ptr, struct tipc_link *tunnel)
{
struct sk_buff *iter;
struct tipc_msg tunnel_hdr;
@@ -2358,11 +2360,11 @@ static struct sk_buff *buf_extract(struct sk_buff *skb, u32 from_pos)
* via other link. Node is locked. Return extracted buffer.
*/
-static int link_recv_changeover_msg(struct link **l_ptr,
+static int link_recv_changeover_msg(struct tipc_link **l_ptr,
struct sk_buff **buf)
{
struct sk_buff *tunnel_buf = *buf;
- struct link *dest_link;
+ struct tipc_link *dest_link;
struct tipc_msg *msg;
struct tipc_msg *tunnel_msg = buf_msg(tunnel_buf);
u32 msg_typ = msg_type(tunnel_msg);
@@ -2462,7 +2464,7 @@ void tipc_link_recv_bundle(struct sk_buff *buf)
* The buffer is complete, inclusive total message length.
* Returns user data length.
*/
-static int link_send_long_buf(struct link *l_ptr, struct sk_buff *buf)
+static int link_send_long_buf(struct tipc_link *l_ptr, struct sk_buff *buf)
{
struct sk_buff *buf_chain = NULL;
struct sk_buff *buf_chain_tail = (struct sk_buff *)&buf_chain;
@@ -2591,7 +2593,7 @@ int tipc_link_recv_fragment(struct sk_buff **pending, struct sk_buff **fb,
/* Is there an incomplete message waiting for this fragment? */
- while (pbuf && ((msg_seqno(buf_msg(pbuf)) != long_msg_seq_no) ||
+ while (pbuf && ((buf_seqno(pbuf) != long_msg_seq_no) ||
(msg_orignode(fragm) != msg_orignode(buf_msg(pbuf))))) {
prev = pbuf;
pbuf = pbuf->next;
@@ -2658,7 +2660,7 @@ int tipc_link_recv_fragment(struct sk_buff **pending, struct sk_buff **fb,
* @l_ptr: pointer to link
*/
-static void link_check_defragm_bufs(struct link *l_ptr)
+static void link_check_defragm_bufs(struct tipc_link *l_ptr)
{
struct sk_buff *prev = NULL;
struct sk_buff *next = NULL;
@@ -2688,7 +2690,7 @@ static void link_check_defragm_bufs(struct link *l_ptr)
-static void link_set_supervision_props(struct link *l_ptr, u32 tolerance)
+static void link_set_supervision_props(struct tipc_link *l_ptr, u32 tolerance)
{
if ((tolerance < TIPC_MIN_LINK_TOL) || (tolerance > TIPC_MAX_LINK_TOL))
return;
@@ -2700,7 +2702,7 @@ static void link_set_supervision_props(struct link *l_ptr, u32 tolerance)
}
-void tipc_link_set_queue_limits(struct link *l_ptr, u32 window)
+void tipc_link_set_queue_limits(struct tipc_link *l_ptr, u32 window)
{
/* Data messages from this node, inclusive FIRST_FRAGM */
l_ptr->queue_limit[TIPC_LOW_IMPORTANCE] = window;
@@ -2730,11 +2732,12 @@ void tipc_link_set_queue_limits(struct link *l_ptr, u32 window)
* Returns pointer to link (or 0 if invalid link name).
*/
-static struct link *link_find_link(const char *name, struct tipc_node **node)
+static struct tipc_link *link_find_link(const char *name,
+ struct tipc_node **node)
{
- struct link_name link_name_parts;
+ struct tipc_link_name link_name_parts;
struct tipc_bearer *b_ptr;
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
if (!link_name_validate(name, &link_name_parts))
return NULL;
@@ -2754,13 +2757,113 @@ static struct link *link_find_link(const char *name, struct tipc_node **node)
return l_ptr;
}
+/**
+ * link_value_is_valid -- validate proposed link tolerance/priority/window
+ *
+ * @cmd - value type (TIPC_CMD_SET_LINK_*)
+ * @new_value - the new value
+ *
+ * Returns 1 if value is within range, 0 if not.
+ */
+
+static int link_value_is_valid(u16 cmd, u32 new_value)
+{
+ switch (cmd) {
+ case TIPC_CMD_SET_LINK_TOL:
+ return (new_value >= TIPC_MIN_LINK_TOL) &&
+ (new_value <= TIPC_MAX_LINK_TOL);
+ case TIPC_CMD_SET_LINK_PRI:
+ return (new_value <= TIPC_MAX_LINK_PRI);
+ case TIPC_CMD_SET_LINK_WINDOW:
+ return (new_value >= TIPC_MIN_LINK_WIN) &&
+ (new_value <= TIPC_MAX_LINK_WIN);
+ }
+ return 0;
+}
+
+
+/**
+ * link_cmd_set_value - change priority/tolerance/window for link/bearer/media
+ * @name - ptr to link, bearer, or media name
+ * @new_value - new value of link, bearer, or media setting
+ * @cmd - which link, bearer, or media attribute to set (TIPC_CMD_SET_LINK_*)
+ *
+ * Caller must hold 'tipc_net_lock' to ensure link/bearer/media is not deleted.
+ *
+ * Returns 0 if value updated and negative value on error.
+ */
+
+static int link_cmd_set_value(const char *name, u32 new_value, u16 cmd)
+{
+ struct tipc_node *node;
+ struct tipc_link *l_ptr;
+ struct tipc_bearer *b_ptr;
+ struct tipc_media *m_ptr;
+
+ l_ptr = link_find_link(name, &node);
+ if (l_ptr) {
+ /*
+ * acquire node lock for tipc_link_send_proto_msg().
+ * see "TIPC locking policy" in net.c.
+ */
+ tipc_node_lock(node);
+ switch (cmd) {
+ case TIPC_CMD_SET_LINK_TOL:
+ link_set_supervision_props(l_ptr, new_value);
+ tipc_link_send_proto_msg(l_ptr,
+ STATE_MSG, 0, 0, new_value, 0, 0);
+ break;
+ case TIPC_CMD_SET_LINK_PRI:
+ l_ptr->priority = new_value;
+ tipc_link_send_proto_msg(l_ptr,
+ STATE_MSG, 0, 0, 0, new_value, 0);
+ break;
+ case TIPC_CMD_SET_LINK_WINDOW:
+ tipc_link_set_queue_limits(l_ptr, new_value);
+ break;
+ }
+ tipc_node_unlock(node);
+ return 0;
+ }
+
+ b_ptr = tipc_bearer_find(name);
+ if (b_ptr) {
+ switch (cmd) {
+ case TIPC_CMD_SET_LINK_TOL:
+ b_ptr->tolerance = new_value;
+ return 0;
+ case TIPC_CMD_SET_LINK_PRI:
+ b_ptr->priority = new_value;
+ return 0;
+ case TIPC_CMD_SET_LINK_WINDOW:
+ b_ptr->window = new_value;
+ return 0;
+ }
+ return -EINVAL;
+ }
+
+ m_ptr = tipc_media_find(name);
+ if (!m_ptr)
+ return -ENODEV;
+ switch (cmd) {
+ case TIPC_CMD_SET_LINK_TOL:
+ m_ptr->tolerance = new_value;
+ return 0;
+ case TIPC_CMD_SET_LINK_PRI:
+ m_ptr->priority = new_value;
+ return 0;
+ case TIPC_CMD_SET_LINK_WINDOW:
+ m_ptr->window = new_value;
+ return 0;
+ }
+ return -EINVAL;
+}
+
struct sk_buff *tipc_link_cmd_config(const void *req_tlv_area, int req_tlv_space,
u16 cmd)
{
struct tipc_link_config *args;
u32 new_value;
- struct link *l_ptr;
- struct tipc_node *node;
int res;
if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_LINK_CONFIG))
@@ -2769,6 +2872,10 @@ struct sk_buff *tipc_link_cmd_config(const void *req_tlv_area, int req_tlv_space
args = (struct tipc_link_config *)TLV_DATA(req_tlv_area);
new_value = ntohl(args->value);
+ if (!link_value_is_valid(cmd, new_value))
+ return tipc_cfg_reply_error_string(
+ "cannot change, value invalid");
+
if (!strcmp(args->name, tipc_bclink_name)) {
if ((cmd == TIPC_CMD_SET_LINK_WINDOW) &&
(tipc_bclink_set_queue_limits(new_value) == 0))
@@ -2778,43 +2885,7 @@ struct sk_buff *tipc_link_cmd_config(const void *req_tlv_area, int req_tlv_space
}
read_lock_bh(&tipc_net_lock);
- l_ptr = link_find_link(args->name, &node);
- if (!l_ptr) {
- read_unlock_bh(&tipc_net_lock);
- return tipc_cfg_reply_error_string("link not found");
- }
-
- tipc_node_lock(node);
- res = -EINVAL;
- switch (cmd) {
- case TIPC_CMD_SET_LINK_TOL:
- if ((new_value >= TIPC_MIN_LINK_TOL) &&
- (new_value <= TIPC_MAX_LINK_TOL)) {
- link_set_supervision_props(l_ptr, new_value);
- tipc_link_send_proto_msg(l_ptr, STATE_MSG,
- 0, 0, new_value, 0, 0);
- res = 0;
- }
- break;
- case TIPC_CMD_SET_LINK_PRI:
- if ((new_value >= TIPC_MIN_LINK_PRI) &&
- (new_value <= TIPC_MAX_LINK_PRI)) {
- l_ptr->priority = new_value;
- tipc_link_send_proto_msg(l_ptr, STATE_MSG,
- 0, 0, 0, new_value, 0);
- res = 0;
- }
- break;
- case TIPC_CMD_SET_LINK_WINDOW:
- if ((new_value >= TIPC_MIN_LINK_WIN) &&
- (new_value <= TIPC_MAX_LINK_WIN)) {
- tipc_link_set_queue_limits(l_ptr, new_value);
- res = 0;
- }
- break;
- }
- tipc_node_unlock(node);
-
+ res = link_cmd_set_value(args->name, new_value, cmd);
read_unlock_bh(&tipc_net_lock);
if (res)
return tipc_cfg_reply_error_string("cannot change link setting");
@@ -2827,7 +2898,7 @@ struct sk_buff *tipc_link_cmd_config(const void *req_tlv_area, int req_tlv_space
* @l_ptr: pointer to link
*/
-static void link_reset_statistics(struct link *l_ptr)
+static void link_reset_statistics(struct tipc_link *l_ptr)
{
memset(&l_ptr->stats, 0, sizeof(l_ptr->stats));
l_ptr->stats.sent_info = l_ptr->next_out_no;
@@ -2837,7 +2908,7 @@ static void link_reset_statistics(struct link *l_ptr)
struct sk_buff *tipc_link_cmd_reset_stats(const void *req_tlv_area, int req_tlv_space)
{
char *link_name;
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
struct tipc_node *node;
if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_LINK_NAME))
@@ -2885,7 +2956,7 @@ static u32 percent(u32 count, u32 total)
static int tipc_link_stats(const char *name, char *buf, const u32 buf_size)
{
struct print_buf pb;
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
struct tipc_node *node;
char *status;
u32 profile_total = 0;
@@ -3007,7 +3078,7 @@ struct sk_buff *tipc_link_cmd_show_stats(const void *req_tlv_area, int req_tlv_s
u32 tipc_link_get_max_pkt(u32 dest, u32 selector)
{
struct tipc_node *n_ptr;
- struct link *l_ptr;
+ struct tipc_link *l_ptr;
u32 res = MAX_PKT_DEFAULT;
if (dest == tipc_own_addr)
@@ -3026,7 +3097,7 @@ u32 tipc_link_get_max_pkt(u32 dest, u32 selector)
return res;
}
-static void link_print(struct link *l_ptr, const char *str)
+static void link_print(struct tipc_link *l_ptr, const char *str)
{
char print_area[256];
struct print_buf pb;
@@ -3046,13 +3117,12 @@ static void link_print(struct link *l_ptr, const char *str)
tipc_printf(buf, "NXI(%u):", mod(l_ptr->next_in_no));
tipc_printf(buf, "SQUE");
if (l_ptr->first_out) {
- tipc_printf(buf, "[%u..", msg_seqno(buf_msg(l_ptr->first_out)));
+ tipc_printf(buf, "[%u..", buf_seqno(l_ptr->first_out));
if (l_ptr->next_out)
- tipc_printf(buf, "%u..",
- msg_seqno(buf_msg(l_ptr->next_out)));
- tipc_printf(buf, "%u]", msg_seqno(buf_msg(l_ptr->last_out)));
- if ((mod(msg_seqno(buf_msg(l_ptr->last_out)) -
- msg_seqno(buf_msg(l_ptr->first_out)))
+ tipc_printf(buf, "%u..", buf_seqno(l_ptr->next_out));
+ tipc_printf(buf, "%u]", buf_seqno(l_ptr->last_out));
+ if ((mod(buf_seqno(l_ptr->last_out) -
+ buf_seqno(l_ptr->first_out))
!= (l_ptr->out_queue_size - 1)) ||
(l_ptr->last_out->next != NULL)) {
tipc_printf(buf, "\nSend queue inconsistency\n");
@@ -3064,8 +3134,8 @@ static void link_print(struct link *l_ptr, const char *str)
tipc_printf(buf, "[]");
tipc_printf(buf, "SQSIZ(%u)", l_ptr->out_queue_size);
if (l_ptr->oldest_deferred_in) {
- u32 o = msg_seqno(buf_msg(l_ptr->oldest_deferred_in));
- u32 n = msg_seqno(buf_msg(l_ptr->newest_deferred_in));
+ u32 o = buf_seqno(l_ptr->oldest_deferred_in);
+ u32 n = buf_seqno(l_ptr->newest_deferred_in);
tipc_printf(buf, ":RQUE[%u..%u]", o, n);
if (l_ptr->deferred_inqueue_sz != mod((n + 1) - o)) {
tipc_printf(buf, ":RQSIZ(%u)",
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-11 14:12:24 +0000