diff options
Diffstat (limited to 'net/tipc/bcast.h')
| -rw-r--r-- | net/tipc/bcast.h | 115 |
1 files changed, 74 insertions, 41 deletions
diff --git a/net/tipc/bcast.h b/net/tipc/bcast.h index 644d79129fb..43f397fbac5 100644 --- a/net/tipc/bcast.h +++ b/net/tipc/bcast.h @@ -1,7 +1,7 @@ /* * net/tipc/bcast.h: Include file for TIPC broadcast code * - * Copyright (c) 2003-2006, 2014, Ericsson AB + * Copyright (c) 2003-2006, 2014-2015, Ericsson AB * Copyright (c) 2005, 2010-2011, Wind River Systems * All rights reserved. * @@ -37,39 +37,73 @@ #ifndef _TIPC_BCAST_H #define _TIPC_BCAST_H -#include "netlink.h" - -#define MAX_NODES 4096 -#define WSIZE 32 -#define TIPC_BCLINK_RESET 1 +#include <linux/tipc_config.h> +#include "link.h" +#include "node.h" /** - * struct tipc_node_map - set of node identifiers - * @count: # of nodes in set - * @map: bitmap of node identifiers that are in the set + * struct tipc_bcbearer_pair - a pair of bearers used by broadcast link + * @primary: pointer to primary bearer + * @secondary: pointer to secondary bearer + * + * Bearers must have same priority and same set of reachable destinations + * to be paired. */ -struct tipc_node_map { - u32 count; - u32 map[MAX_NODES / WSIZE]; + +struct tipc_bcbearer_pair { + struct tipc_bearer *primary; + struct tipc_bearer *secondary; }; -#define PLSIZE 32 +#define TIPC_BCLINK_RESET 1 +#define BCBEARER MAX_BEARERS /** - * struct tipc_port_list - set of node local destination ports - * @count: # of ports in set (only valid for first entry in list) - * @next: pointer to next entry in list - * @ports: array of port references + * struct tipc_bcbearer - bearer used by broadcast link + * @bearer: (non-standard) broadcast bearer structure + * @media: (non-standard) broadcast media structure + * @bpairs: array of bearer pairs + * @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 "bclink_lock". */ -struct tipc_port_list { - int count; - struct tipc_port_list *next; - u32 ports[PLSIZE]; +struct tipc_bcbearer { + struct tipc_bearer bearer; + struct tipc_media media; + struct tipc_bcbearer_pair bpairs[MAX_BEARERS]; + struct tipc_bcbearer_pair bpairs_temp[TIPC_MAX_LINK_PRI + 1]; + struct tipc_node_map remains; + struct tipc_node_map remains_new; }; +/** + * struct tipc_bclink - link used for broadcast messages + * @lock: spinlock governing access to structure + * @link: (non-standard) broadcast link structure + * @node: (non-standard) node structure representing b'cast link's peer node + * @flags: represent bclink states + * @bcast_nodes: map of broadcast-capable nodes + * @retransmit_to: node that most recently requested a retransmit + * + * Handles sequence numbering, fragmentation, bundling, etc. + */ +struct tipc_bclink { + spinlock_t lock; + struct tipc_link link; + struct tipc_node node; + unsigned int flags; + struct sk_buff_head arrvq; + struct sk_buff_head inputq; + struct tipc_node_map bcast_nodes; + struct tipc_node *retransmit_to; +}; struct tipc_node; - extern const char tipc_bclink_name[]; /** @@ -81,27 +115,26 @@ static inline int tipc_nmap_equal(struct tipc_node_map *nm_a, return !memcmp(nm_a, nm_b, sizeof(*nm_a)); } -void tipc_port_list_add(struct tipc_port_list *pl_ptr, u32 port); -void tipc_port_list_free(struct tipc_port_list *pl_ptr); - -int tipc_bclink_init(void); -void tipc_bclink_stop(void); -void tipc_bclink_set_flags(unsigned int flags); -void tipc_bclink_add_node(u32 addr); -void tipc_bclink_remove_node(u32 addr); -struct tipc_node *tipc_bclink_retransmit_to(void); +int tipc_bclink_init(struct net *net); +void tipc_bclink_stop(struct net *net); +void tipc_bclink_set_flags(struct net *tn, unsigned int flags); +void tipc_bclink_add_node(struct net *net, u32 addr); +void tipc_bclink_remove_node(struct net *net, u32 addr); +struct tipc_node *tipc_bclink_retransmit_to(struct net *tn); void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked); -void tipc_bclink_rcv(struct sk_buff *buf); -u32 tipc_bclink_get_last_sent(void); +void tipc_bclink_rcv(struct net *net, struct sk_buff *buf); +u32 tipc_bclink_get_last_sent(struct net *net); u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr); -void tipc_bclink_update_link_state(struct tipc_node *n_ptr, u32 last_sent); -int tipc_bclink_stats(char *stats_buf, const u32 buf_size); -int tipc_bclink_reset_stats(void); -int tipc_bclink_set_queue_limits(u32 limit); -void tipc_bcbearer_sort(struct tipc_node_map *nm_ptr, u32 node, bool action); +void tipc_bclink_update_link_state(struct tipc_node *node, + u32 last_sent); +int tipc_bclink_reset_stats(struct net *net); +int tipc_bclink_set_queue_limits(struct net *net, u32 limit); +void tipc_bcbearer_sort(struct net *net, struct tipc_node_map *nm_ptr, + u32 node, bool action); uint tipc_bclink_get_mtu(void); -int tipc_bclink_xmit(struct sk_buff_head *list); -void tipc_bclink_wakeup_users(void); -int tipc_nl_add_bc_link(struct tipc_nl_msg *msg); +int tipc_bclink_xmit(struct net *net, struct sk_buff_head *list); +void tipc_bclink_wakeup_users(struct net *net); +int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg); +void tipc_bclink_input(struct net *net); #endif |