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Diffstat (limited to 'net/tipc/link.h')
-rw-r--r--net/tipc/link.h175
1 files changed, 18 insertions, 157 deletions
diff --git a/net/tipc/link.h b/net/tipc/link.h
index 66d859b66..b2ae0f427 100644
--- a/net/tipc/link.h
+++ b/net/tipc/link.h
@@ -45,10 +45,6 @@
*/
#define ELINKCONG EAGAIN /* link congestion <=> resource unavailable */
-/* Out-of-range value for link sequence numbers
- */
-#define INVALID_LINK_SEQ 0x10000
-
/* Link FSM events:
*/
enum {
@@ -75,151 +71,6 @@ enum {
*/
#define MAX_PKT_DEFAULT 1500
-struct tipc_stats {
- u32 sent_info; /* used in counting # sent packets */
- u32 recv_info; /* used in counting # recv'd packets */
- u32 sent_states;
- u32 recv_states;
- u32 sent_probes;
- u32 recv_probes;
- u32 sent_nacks;
- u32 recv_nacks;
- u32 sent_acks;
- u32 sent_bundled;
- u32 sent_bundles;
- u32 recv_bundled;
- u32 recv_bundles;
- u32 retransmitted;
- u32 sent_fragmented;
- u32 sent_fragments;
- u32 recv_fragmented;
- u32 recv_fragments;
- u32 link_congs; /* # port sends blocked by congestion */
- u32 deferred_recv;
- u32 duplicates;
- u32 max_queue_sz; /* send queue size high water mark */
- u32 accu_queue_sz; /* used for send queue size profiling */
- u32 queue_sz_counts; /* used for send queue size profiling */
- u32 msg_length_counts; /* used for message length profiling */
- u32 msg_lengths_total; /* used for message length profiling */
- u32 msg_length_profile[7]; /* used for msg. length profiling */
-};
-
-/**
- * struct tipc_link - TIPC link data structure
- * @addr: network address of link's peer node
- * @name: link name character string
- * @media_addr: media address to use when sending messages over link
- * @timer: link timer
- * @net: pointer to namespace struct
- * @refcnt: reference counter for permanent references (owner node & timer)
- * @peer_session: link session # being used by peer end of link
- * @peer_bearer_id: bearer id used by link's peer endpoint
- * @bearer_id: local bearer id used by link
- * @tolerance: minimum link continuity loss needed to reset link [in ms]
- * @keepalive_intv: link keepalive timer interval
- * @abort_limit: # of unacknowledged continuity probes needed to reset link
- * @state: current state of link FSM
- * @peer_caps: bitmap describing capabilities of peer node
- * @silent_intv_cnt: # of timer intervals without any reception from peer
- * @proto_msg: template for control messages generated by link
- * @pmsg: convenience pointer to "proto_msg" field
- * @priority: current link priority
- * @net_plane: current link network plane ('A' through 'H')
- * @backlog_limit: backlog queue congestion thresholds (indexed by importance)
- * @exp_msg_count: # of tunnelled messages expected during link changeover
- * @reset_rcv_checkpt: seq # of last acknowledged message at time of link reset
- * @mtu: current maximum packet size for this link
- * @advertised_mtu: advertised own mtu when link is being established
- * @transmitq: queue for sent, non-acked messages
- * @backlogq: queue for messages waiting to be sent
- * @snt_nxt: next sequence number to use for outbound messages
- * @last_retransmitted: sequence number of most recently retransmitted message
- * @stale_count: # of identical retransmit requests made by peer
- * @ackers: # of peers that needs to ack each packet before it can be released
- * @acked: # last packet acked by a certain peer. Used for broadcast.
- * @rcv_nxt: next sequence number to expect for inbound messages
- * @deferred_queue: deferred queue saved OOS b'cast message received from node
- * @unacked_window: # of inbound messages rx'd without ack'ing back to peer
- * @inputq: buffer queue for messages to be delivered upwards
- * @namedq: buffer queue for name table messages to be delivered upwards
- * @next_out: ptr to first unsent outbound message in queue
- * @wakeupq: linked list of wakeup msgs waiting for link congestion to abate
- * @long_msg_seq_no: next identifier to use for outbound fragmented messages
- * @reasm_buf: head of partially reassembled inbound message fragments
- * @bc_rcvr: marks that this is a broadcast receiver link
- * @stats: collects statistics regarding link activity
- */
-struct tipc_link {
- u32 addr;
- char name[TIPC_MAX_LINK_NAME];
- struct tipc_media_addr *media_addr;
- struct net *net;
-
- /* Management and link supervision data */
- u32 peer_session;
- u32 peer_bearer_id;
- u32 bearer_id;
- u32 tolerance;
- unsigned long keepalive_intv;
- u32 abort_limit;
- u32 state;
- u16 peer_caps;
- bool active;
- u32 silent_intv_cnt;
- struct {
- unchar hdr[INT_H_SIZE];
- unchar body[TIPC_MAX_IF_NAME];
- } proto_msg;
- struct tipc_msg *pmsg;
- u32 priority;
- char net_plane;
-
- /* Failover/synch */
- u16 drop_point;
- struct sk_buff *failover_reasm_skb;
-
- /* Max packet negotiation */
- u16 mtu;
- u16 advertised_mtu;
-
- /* Sending */
- struct sk_buff_head transmq;
- struct sk_buff_head backlogq;
- struct {
- u16 len;
- u16 limit;
- } backlog[5];
- u16 snd_nxt;
- u16 last_retransm;
- u16 window;
- u32 stale_count;
-
- /* Reception */
- u16 rcv_nxt;
- u32 rcv_unacked;
- struct sk_buff_head deferdq;
- struct sk_buff_head *inputq;
- struct sk_buff_head *namedq;
-
- /* Congestion handling */
- struct sk_buff_head wakeupq;
-
- /* Fragmentation/reassembly */
- struct sk_buff *reasm_buf;
-
- /* Broadcast */
- u16 ackers;
- u16 acked;
- struct tipc_link *bc_rcvlink;
- struct tipc_link *bc_sndlink;
- int nack_state;
- bool bc_peer_is_up;
-
- /* Statistics */
- struct tipc_stats stats;
-};
-
bool tipc_link_create(struct net *net, char *if_name, int bearer_id,
int tolerance, char net_plane, u32 mtu, int priority,
int window, u32 session, u32 ownnode, u32 peer,
@@ -235,11 +86,11 @@ bool tipc_link_bc_create(struct net *net, u32 ownnode, u32 peer,
struct sk_buff_head *namedq,
struct tipc_link *bc_sndlink,
struct tipc_link **link);
+void tipc_link_reinit(struct tipc_link *l, u32 addr);
void tipc_link_tnl_prepare(struct tipc_link *l, struct tipc_link *tnl,
int mtyp, struct sk_buff_head *xmitq);
void tipc_link_build_reset_msg(struct tipc_link *l, struct sk_buff_head *xmitq);
int tipc_link_fsm_evt(struct tipc_link *l, int evt);
-void tipc_link_reset_fragments(struct tipc_link *l_ptr);
bool tipc_link_is_up(struct tipc_link *l);
bool tipc_link_peer_is_down(struct tipc_link *l);
bool tipc_link_is_reset(struct tipc_link *l);
@@ -248,15 +99,25 @@ bool tipc_link_is_synching(struct tipc_link *l);
bool tipc_link_is_failingover(struct tipc_link *l);
bool tipc_link_is_blocked(struct tipc_link *l);
void tipc_link_set_active(struct tipc_link *l, bool active);
-void tipc_link_reset(struct tipc_link *l_ptr);
-int tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list,
+void tipc_link_reset(struct tipc_link *l);
+void tipc_link_reset_stats(struct tipc_link *l);
+int tipc_link_xmit(struct tipc_link *link, struct sk_buff_head *list,
struct sk_buff_head *xmitq);
+struct sk_buff_head *tipc_link_inputq(struct tipc_link *l);
+u16 tipc_link_rcv_nxt(struct tipc_link *l);
+u16 tipc_link_acked(struct tipc_link *l);
+u32 tipc_link_id(struct tipc_link *l);
+char *tipc_link_name(struct tipc_link *l);
+char tipc_link_plane(struct tipc_link *l);
+int tipc_link_prio(struct tipc_link *l);
+int tipc_link_window(struct tipc_link *l);
+unsigned long tipc_link_tolerance(struct tipc_link *l);
+void tipc_link_set_tolerance(struct tipc_link *l, u32 tol);
+void tipc_link_set_prio(struct tipc_link *l, u32 prio);
+void tipc_link_set_abort_limit(struct tipc_link *l, u32 limit);
void tipc_link_set_queue_limits(struct tipc_link *l, u32 window);
-
-int tipc_nl_link_dump(struct sk_buff *skb, struct netlink_callback *cb);
-int tipc_nl_link_get(struct sk_buff *skb, struct genl_info *info);
-int tipc_nl_link_set(struct sk_buff *skb, struct genl_info *info);
-int tipc_nl_link_reset_stats(struct sk_buff *skb, struct genl_info *info);
+int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg,
+ struct tipc_link *link, int nlflags);
int tipc_nl_parse_link_prop(struct nlattr *prop, struct nlattr *props[]);
int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq);
int tipc_link_rcv(struct tipc_link *l, struct sk_buff *skb,