tipc: make tipc broadcast link support net namespace
TIPC broadcast link is statically established and its relevant states are maintained with the global variables: "bcbearer", "bclink" and "bcl". Allowing different namespace to own different broadcast link instances, these variables must be moved to tipc_net structure and broadcast link instances would be allocated and initialized when namespace is created. Signed-off-by: Ying Xue <ying.xue@windriver.com> Tested-by: Tero Aho <Tero.Aho@coriant.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ying Xue
David S. Miller
parent
7f9f95d9d9
commit
1da465683a
12 changed files with 259 additions and 205 deletions
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@ -34,7 +34,7 @@
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "core.h"
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#include <linux/kernel.h>
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#include "addr.h"
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/**
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@ -37,6 +37,9 @@
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#ifndef _TIPC_ADDR_H
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#define _TIPC_ADDR_H
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#include <linux/types.h>
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#include <linux/tipc.h>
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#define TIPC_ZONE_MASK 0xff000000u
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#define TIPC_CLUSTER_MASK 0xfffff000u
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297
net/tipc/bcast.c
297
net/tipc/bcast.c
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@ -35,77 +35,14 @@
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "core.h"
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#include "link.h"
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#include "socket.h"
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#include "msg.h"
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#include "bcast.h"
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#include "name_distr.h"
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#include "core.h"
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#define MAX_PKT_DEFAULT_MCAST 1500 /* bcast link max packet size (fixed) */
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#define BCLINK_WIN_DEFAULT 20 /* bcast link window size (default) */
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#define BCBEARER MAX_BEARERS
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/**
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* struct tipc_bcbearer_pair - a pair of bearers used by broadcast link
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* @primary: pointer to primary bearer
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* @secondary: pointer to secondary bearer
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*
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* Bearers must have same priority and same set of reachable destinations
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* to be paired.
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*/
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struct tipc_bcbearer_pair {
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struct tipc_bearer *primary;
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struct tipc_bearer *secondary;
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};
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/**
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* struct tipc_bcbearer - bearer used by broadcast link
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* @bearer: (non-standard) broadcast bearer structure
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* @media: (non-standard) broadcast media structure
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* @bpairs: array of bearer pairs
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* @bpairs_temp: temporary array of bearer pairs used by tipc_bcbearer_sort()
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* @remains: temporary node map used by tipc_bcbearer_send()
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* @remains_new: temporary node map used tipc_bcbearer_send()
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*
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* Note: The fields labelled "temporary" are incorporated into the bearer
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* to avoid consuming potentially limited stack space through the use of
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* large local variables within multicast routines. Concurrent access is
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* prevented through use of the spinlock "bclink_lock".
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*/
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struct tipc_bcbearer {
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struct tipc_bearer bearer;
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struct tipc_media media;
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struct tipc_bcbearer_pair bpairs[MAX_BEARERS];
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struct tipc_bcbearer_pair bpairs_temp[TIPC_MAX_LINK_PRI + 1];
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struct tipc_node_map remains;
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struct tipc_node_map remains_new;
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};
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/**
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* struct tipc_bclink - link used for broadcast messages
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* @lock: spinlock governing access to structure
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* @link: (non-standard) broadcast link structure
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* @node: (non-standard) node structure representing b'cast link's peer node
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* @flags: represent bclink states
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* @bcast_nodes: map of broadcast-capable nodes
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* @retransmit_to: node that most recently requested a retransmit
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*
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* Handles sequence numbering, fragmentation, bundling, etc.
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*/
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struct tipc_bclink {
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spinlock_t lock;
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struct tipc_link link;
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struct tipc_node node;
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unsigned int flags;
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struct tipc_node_map bcast_nodes;
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struct tipc_node *retransmit_to;
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};
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static struct tipc_bcbearer *bcbearer;
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static struct tipc_bclink *bclink;
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static struct tipc_link *bcl;
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const char tipc_bclink_name[] = "broadcast-link";
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@ -115,25 +52,28 @@ static void tipc_nmap_diff(struct tipc_node_map *nm_a,
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static void tipc_nmap_add(struct tipc_node_map *nm_ptr, u32 node);
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static void tipc_nmap_remove(struct tipc_node_map *nm_ptr, u32 node);
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static void tipc_bclink_lock(void)
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static void tipc_bclink_lock(struct net *net)
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{
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spin_lock_bh(&bclink->lock);
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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spin_lock_bh(&tn->bclink->lock);
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}
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static void tipc_bclink_unlock(void)
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static void tipc_bclink_unlock(struct net *net)
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{
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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struct tipc_node *node = NULL;
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if (likely(!bclink->flags)) {
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spin_unlock_bh(&bclink->lock);
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if (likely(!tn->bclink->flags)) {
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spin_unlock_bh(&tn->bclink->lock);
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return;
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}
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if (bclink->flags & TIPC_BCLINK_RESET) {
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bclink->flags &= ~TIPC_BCLINK_RESET;
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node = tipc_bclink_retransmit_to();
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if (tn->bclink->flags & TIPC_BCLINK_RESET) {
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tn->bclink->flags &= ~TIPC_BCLINK_RESET;
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node = tipc_bclink_retransmit_to(net);
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}
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spin_unlock_bh(&bclink->lock);
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spin_unlock_bh(&tn->bclink->lock);
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if (node)
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tipc_link_reset_all(node);
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@ -144,9 +84,11 @@ uint tipc_bclink_get_mtu(void)
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return MAX_PKT_DEFAULT_MCAST;
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}
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void tipc_bclink_set_flags(unsigned int flags)
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void tipc_bclink_set_flags(struct net *net, unsigned int flags)
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{
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bclink->flags |= flags;
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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tn->bclink->flags |= flags;
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}
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static u32 bcbuf_acks(struct sk_buff *buf)
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@ -164,31 +106,40 @@ static void bcbuf_decr_acks(struct sk_buff *buf)
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bcbuf_set_acks(buf, bcbuf_acks(buf) - 1);
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}
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void tipc_bclink_add_node(u32 addr)
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void tipc_bclink_add_node(struct net *net, u32 addr)
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{
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tipc_bclink_lock();
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tipc_nmap_add(&bclink->bcast_nodes, addr);
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tipc_bclink_unlock();
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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tipc_bclink_lock(net);
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tipc_nmap_add(&tn->bclink->bcast_nodes, addr);
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tipc_bclink_unlock(net);
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}
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void tipc_bclink_remove_node(u32 addr)
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void tipc_bclink_remove_node(struct net *net, u32 addr)
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{
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tipc_bclink_lock();
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tipc_nmap_remove(&bclink->bcast_nodes, addr);
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tipc_bclink_unlock();
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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tipc_bclink_lock(net);
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tipc_nmap_remove(&tn->bclink->bcast_nodes, addr);
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tipc_bclink_unlock(net);
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}
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static void bclink_set_last_sent(void)
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static void bclink_set_last_sent(struct net *net)
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{
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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struct tipc_link *bcl = tn->bcl;
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if (bcl->next_out)
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bcl->fsm_msg_cnt = mod(buf_seqno(bcl->next_out) - 1);
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else
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bcl->fsm_msg_cnt = mod(bcl->next_out_no - 1);
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}
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u32 tipc_bclink_get_last_sent(void)
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u32 tipc_bclink_get_last_sent(struct net *net)
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{
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return bcl->fsm_msg_cnt;
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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return tn->bcl->fsm_msg_cnt;
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}
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static void bclink_update_last_sent(struct tipc_node *node, u32 seqno)
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@ -203,9 +154,11 @@ static void bclink_update_last_sent(struct tipc_node *node, u32 seqno)
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*
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* Called with bclink_lock locked
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*/
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struct tipc_node *tipc_bclink_retransmit_to(void)
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struct tipc_node *tipc_bclink_retransmit_to(struct net *net)
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{
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return bclink->retransmit_to;
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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return tn->bclink->retransmit_to;
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}
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/**
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@ -215,9 +168,10 @@ struct tipc_node *tipc_bclink_retransmit_to(void)
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*
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* Called with bclink_lock locked
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*/
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static void bclink_retransmit_pkt(u32 after, u32 to)
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static void bclink_retransmit_pkt(struct tipc_net *tn, u32 after, u32 to)
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{
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struct sk_buff *skb;
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struct tipc_link *bcl = tn->bcl;
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skb_queue_walk(&bcl->outqueue, skb) {
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if (more(buf_seqno(skb), after)) {
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@ -234,9 +188,10 @@ static void bclink_retransmit_pkt(u32 after, u32 to)
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*/
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void tipc_bclink_wakeup_users(struct net *net)
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{
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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struct sk_buff *skb;
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while ((skb = skb_dequeue(&bclink->link.waiting_sks)))
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while ((skb = skb_dequeue(&tn->bclink->link.waiting_sks)))
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tipc_sk_rcv(net, skb);
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}
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@ -252,10 +207,12 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
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struct sk_buff *skb, *tmp;
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struct sk_buff *next;
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unsigned int released = 0;
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struct net *net = n_ptr->net;
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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tipc_bclink_lock();
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tipc_bclink_lock(net);
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/* Bail out if tx queue is empty (no clean up is required) */
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skb = skb_peek(&bcl->outqueue);
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skb = skb_peek(&tn->bcl->outqueue);
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if (!skb)
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goto exit;
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@ -266,43 +223,43 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
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* acknowledge sent messages only (if other nodes still exist)
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* or both sent and unsent messages (otherwise)
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*/
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if (bclink->bcast_nodes.count)
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acked = bcl->fsm_msg_cnt;
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if (tn->bclink->bcast_nodes.count)
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acked = tn->bcl->fsm_msg_cnt;
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else
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acked = bcl->next_out_no;
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acked = tn->bcl->next_out_no;
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} else {
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/*
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* Bail out if specified sequence number does not correspond
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* to a message that has been sent and not yet acknowledged
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*/
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if (less(acked, buf_seqno(skb)) ||
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less(bcl->fsm_msg_cnt, acked) ||
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less(tn->bcl->fsm_msg_cnt, acked) ||
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less_eq(acked, n_ptr->bclink.acked))
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goto exit;
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}
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/* Skip over packets that node has previously acknowledged */
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skb_queue_walk(&bcl->outqueue, skb) {
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skb_queue_walk(&tn->bcl->outqueue, skb) {
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if (more(buf_seqno(skb), n_ptr->bclink.acked))
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break;
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}
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/* Update packets that node is now acknowledging */
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skb_queue_walk_from_safe(&bcl->outqueue, skb, tmp) {
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skb_queue_walk_from_safe(&tn->bcl->outqueue, skb, tmp) {
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if (more(buf_seqno(skb), acked))
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break;
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next = tipc_skb_queue_next(&bcl->outqueue, skb);
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if (skb != bcl->next_out) {
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next = tipc_skb_queue_next(&tn->bcl->outqueue, skb);
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if (skb != tn->bcl->next_out) {
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bcbuf_decr_acks(skb);
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} else {
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bcbuf_set_acks(skb, 0);
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bcl->next_out = next;
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bclink_set_last_sent();
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tn->bcl->next_out = next;
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bclink_set_last_sent(net);
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}
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if (bcbuf_acks(skb) == 0) {
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__skb_unlink(skb, &bcl->outqueue);
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__skb_unlink(skb, &tn->bcl->outqueue);
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kfree_skb(skb);
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released = 1;
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}
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@ -310,15 +267,15 @@ void tipc_bclink_acknowledge(struct tipc_node *n_ptr, u32 acked)
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n_ptr->bclink.acked = acked;
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/* Try resolving broadcast link congestion, if necessary */
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if (unlikely(bcl->next_out)) {
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tipc_link_push_packets(bcl);
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bclink_set_last_sent();
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if (unlikely(tn->bcl->next_out)) {
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tipc_link_push_packets(tn->bcl);
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bclink_set_last_sent(net);
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}
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if (unlikely(released && !skb_queue_empty(&bcl->waiting_sks)))
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if (unlikely(released && !skb_queue_empty(&tn->bcl->waiting_sks)))
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n_ptr->action_flags |= TIPC_WAKEUP_BCAST_USERS;
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exit:
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tipc_bclink_unlock();
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tipc_bclink_unlock(net);
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}
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/**
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@ -368,10 +325,10 @@ void tipc_bclink_update_link_state(struct net *net, struct tipc_node *n_ptr,
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msg_set_bcgap_after(msg, n_ptr->bclink.last_in);
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msg_set_bcgap_to(msg, to);
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tipc_bclink_lock();
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tipc_bclink_lock(net);
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tipc_bearer_send(net, MAX_BEARERS, buf, NULL);
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bcl->stats.sent_nacks++;
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tipc_bclink_unlock();
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tn->bcl->stats.sent_nacks++;
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tipc_bclink_unlock(net);
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kfree_skb(buf);
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n_ptr->bclink.oos_state++;
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@ -410,6 +367,9 @@ static void bclink_peek_nack(struct net *net, struct tipc_msg *msg)
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*/
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int tipc_bclink_xmit(struct net *net, struct sk_buff_head *list)
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{
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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struct tipc_link *bcl = tn->bcl;
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struct tipc_bclink *bclink = tn->bclink;
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int rc = 0;
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int bc = 0;
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struct sk_buff *skb;
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@ -423,19 +383,19 @@ int tipc_bclink_xmit(struct net *net, struct sk_buff_head *list)
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/* Broadcast to all other nodes */
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if (likely(bclink)) {
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tipc_bclink_lock();
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tipc_bclink_lock(net);
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if (likely(bclink->bcast_nodes.count)) {
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rc = __tipc_link_xmit(net, bcl, list);
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if (likely(!rc)) {
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u32 len = skb_queue_len(&bcl->outqueue);
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bclink_set_last_sent();
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bclink_set_last_sent(net);
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bcl->stats.queue_sz_counts++;
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bcl->stats.accu_queue_sz += len;
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}
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bc = 1;
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}
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tipc_bclink_unlock();
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tipc_bclink_unlock(net);
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}
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if (unlikely(!bc))
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@ -457,10 +417,12 @@ int tipc_bclink_xmit(struct net *net, struct sk_buff_head *list)
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*/
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static void bclink_accept_pkt(struct tipc_node *node, u32 seqno)
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{
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struct tipc_net *tn = net_generic(node->net, tipc_net_id);
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bclink_update_last_sent(node, seqno);
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node->bclink.last_in = seqno;
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node->bclink.oos_state = 0;
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bcl->stats.recv_info++;
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tn->bcl->stats.recv_info++;
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/*
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* Unicast an ACK periodically, ensuring that
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@ -469,7 +431,7 @@ static void bclink_accept_pkt(struct tipc_node *node, u32 seqno)
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if (((seqno - tipc_own_addr) % TIPC_MIN_LINK_WIN) == 0) {
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tipc_link_proto_xmit(node->active_links[node->addr & 1],
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STATE_MSG, 0, 0, 0, 0, 0);
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bcl->stats.sent_acks++;
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tn->bcl->stats.sent_acks++;
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}
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}
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@ -481,6 +443,7 @@ static void bclink_accept_pkt(struct tipc_node *node, u32 seqno)
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void tipc_bclink_rcv(struct net *net, struct sk_buff *buf)
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{
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struct tipc_net *tn = net_generic(net, tipc_net_id);
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struct tipc_link *bcl = tn->bcl;
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struct tipc_msg *msg = buf_msg(buf);
|
||||
struct tipc_node *node;
|
||||
u32 next_in;
|
||||
|
|
@ -506,12 +469,12 @@ void tipc_bclink_rcv(struct net *net, struct sk_buff *buf)
|
|||
if (msg_destnode(msg) == tipc_own_addr) {
|
||||
tipc_bclink_acknowledge(node, msg_bcast_ack(msg));
|
||||
tipc_node_unlock(node);
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
bcl->stats.recv_nacks++;
|
||||
bclink->retransmit_to = node;
|
||||
bclink_retransmit_pkt(msg_bcgap_after(msg),
|
||||
tn->bclink->retransmit_to = node;
|
||||
bclink_retransmit_pkt(tn, msg_bcgap_after(msg),
|
||||
msg_bcgap_to(msg));
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
} else {
|
||||
tipc_node_unlock(node);
|
||||
bclink_peek_nack(net, msg);
|
||||
|
|
@ -527,47 +490,47 @@ void tipc_bclink_rcv(struct net *net, struct sk_buff *buf)
|
|||
receive:
|
||||
/* Deliver message to destination */
|
||||
if (likely(msg_isdata(msg))) {
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
bclink_accept_pkt(node, seqno);
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
tipc_node_unlock(node);
|
||||
if (likely(msg_mcast(msg)))
|
||||
tipc_sk_mcast_rcv(net, buf);
|
||||
else
|
||||
kfree_skb(buf);
|
||||
} else if (msg_user(msg) == MSG_BUNDLER) {
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
bclink_accept_pkt(node, seqno);
|
||||
bcl->stats.recv_bundles++;
|
||||
bcl->stats.recv_bundled += msg_msgcnt(msg);
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
tipc_node_unlock(node);
|
||||
tipc_link_bundle_rcv(net, buf);
|
||||
} else if (msg_user(msg) == MSG_FRAGMENTER) {
|
||||
tipc_buf_append(&node->bclink.reasm_buf, &buf);
|
||||
if (unlikely(!buf && !node->bclink.reasm_buf))
|
||||
goto unlock;
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
bclink_accept_pkt(node, seqno);
|
||||
bcl->stats.recv_fragments++;
|
||||
if (buf) {
|
||||
bcl->stats.recv_fragmented++;
|
||||
msg = buf_msg(buf);
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
goto receive;
|
||||
}
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
tipc_node_unlock(node);
|
||||
} else if (msg_user(msg) == NAME_DISTRIBUTOR) {
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
bclink_accept_pkt(node, seqno);
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
tipc_node_unlock(node);
|
||||
tipc_named_rcv(net, buf);
|
||||
} else {
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
bclink_accept_pkt(node, seqno);
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
tipc_node_unlock(node);
|
||||
kfree_skb(buf);
|
||||
}
|
||||
|
|
@ -605,14 +568,14 @@ void tipc_bclink_rcv(struct net *net, struct sk_buff *buf)
|
|||
buf = NULL;
|
||||
}
|
||||
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
|
||||
if (deferred)
|
||||
bcl->stats.deferred_recv++;
|
||||
else
|
||||
bcl->stats.duplicates++;
|
||||
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
|
||||
unlock:
|
||||
tipc_node_unlock(node);
|
||||
|
|
@ -623,7 +586,7 @@ void tipc_bclink_rcv(struct net *net, struct sk_buff *buf)
|
|||
u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr)
|
||||
{
|
||||
return (n_ptr->bclink.recv_permitted &&
|
||||
(tipc_bclink_get_last_sent() != n_ptr->bclink.acked));
|
||||
(tipc_bclink_get_last_sent(n_ptr->net) != n_ptr->bclink.acked));
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -636,13 +599,15 @@ u32 tipc_bclink_acks_missing(struct tipc_node *n_ptr)
|
|||
* Returns 0 (packet sent successfully) under all circumstances,
|
||||
* since the broadcast link's pseudo-bearer never blocks
|
||||
*/
|
||||
static int tipc_bcbearer_send(struct sk_buff *buf, struct tipc_bearer *unused1,
|
||||
static int tipc_bcbearer_send(struct net *net, struct sk_buff *buf,
|
||||
struct tipc_bearer *unused1,
|
||||
struct tipc_media_addr *unused2)
|
||||
{
|
||||
int bp_index;
|
||||
struct tipc_msg *msg = buf_msg(buf);
|
||||
struct net *net = sock_net(buf->sk);
|
||||
struct tipc_net *tn = net_generic(net, tipc_net_id);
|
||||
struct tipc_bcbearer *bcbearer = tn->bcbearer;
|
||||
struct tipc_bclink *bclink = tn->bclink;
|
||||
|
||||
/* Prepare broadcast link message for reliable transmission,
|
||||
* if first time trying to send it;
|
||||
|
|
@ -653,7 +618,7 @@ static int tipc_bcbearer_send(struct sk_buff *buf, struct tipc_bearer *unused1,
|
|||
bcbuf_set_acks(buf, bclink->bcast_nodes.count);
|
||||
msg_set_non_seq(msg, 1);
|
||||
msg_set_mc_netid(msg, tn->net_id);
|
||||
bcl->stats.sent_info++;
|
||||
tn->bcl->stats.sent_info++;
|
||||
|
||||
if (WARN_ON(!bclink->bcast_nodes.count)) {
|
||||
dump_stack();
|
||||
|
|
@ -708,13 +673,14 @@ void tipc_bcbearer_sort(struct net *net, struct tipc_node_map *nm_ptr,
|
|||
u32 node, bool action)
|
||||
{
|
||||
struct tipc_net *tn = net_generic(net, tipc_net_id);
|
||||
struct tipc_bcbearer *bcbearer = tn->bcbearer;
|
||||
struct tipc_bcbearer_pair *bp_temp = bcbearer->bpairs_temp;
|
||||
struct tipc_bcbearer_pair *bp_curr;
|
||||
struct tipc_bearer *b;
|
||||
int b_index;
|
||||
int pri;
|
||||
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
|
||||
if (action)
|
||||
tipc_nmap_add(nm_ptr, node);
|
||||
|
|
@ -761,7 +727,7 @@ void tipc_bcbearer_sort(struct net *net, struct tipc_node_map *nm_ptr,
|
|||
bp_curr++;
|
||||
}
|
||||
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
}
|
||||
|
||||
static int __tipc_nl_add_bc_link_stat(struct sk_buff *skb,
|
||||
|
|
@ -815,17 +781,19 @@ static int __tipc_nl_add_bc_link_stat(struct sk_buff *skb,
|
|||
return -EMSGSIZE;
|
||||
}
|
||||
|
||||
int tipc_nl_add_bc_link(struct tipc_nl_msg *msg)
|
||||
int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg)
|
||||
{
|
||||
int err;
|
||||
void *hdr;
|
||||
struct nlattr *attrs;
|
||||
struct nlattr *prop;
|
||||
struct tipc_net *tn = net_generic(net, tipc_net_id);
|
||||
struct tipc_link *bcl = tn->bcl;
|
||||
|
||||
if (!bcl)
|
||||
return 0;
|
||||
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
|
||||
hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
|
||||
NLM_F_MULTI, TIPC_NL_LINK_GET);
|
||||
|
|
@ -860,7 +828,7 @@ int tipc_nl_add_bc_link(struct tipc_nl_msg *msg)
|
|||
if (err)
|
||||
goto attr_msg_full;
|
||||
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
nla_nest_end(msg->skb, attrs);
|
||||
genlmsg_end(msg->skb, hdr);
|
||||
|
||||
|
|
@ -871,21 +839,23 @@ int tipc_nl_add_bc_link(struct tipc_nl_msg *msg)
|
|||
attr_msg_full:
|
||||
nla_nest_cancel(msg->skb, attrs);
|
||||
msg_full:
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
genlmsg_cancel(msg->skb, hdr);
|
||||
|
||||
return -EMSGSIZE;
|
||||
}
|
||||
|
||||
int tipc_bclink_stats(char *buf, const u32 buf_size)
|
||||
int tipc_bclink_stats(struct net *net, char *buf, const u32 buf_size)
|
||||
{
|
||||
int ret;
|
||||
struct tipc_stats *s;
|
||||
struct tipc_net *tn = net_generic(net, tipc_net_id);
|
||||
struct tipc_link *bcl = tn->bcl;
|
||||
|
||||
if (!bcl)
|
||||
return 0;
|
||||
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
|
||||
s = &bcl->stats;
|
||||
|
||||
|
|
@ -914,37 +884,46 @@ int tipc_bclink_stats(char *buf, const u32 buf_size)
|
|||
s->queue_sz_counts ?
|
||||
(s->accu_queue_sz / s->queue_sz_counts) : 0);
|
||||
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int tipc_bclink_reset_stats(void)
|
||||
int tipc_bclink_reset_stats(struct net *net)
|
||||
{
|
||||
struct tipc_net *tn = net_generic(net, tipc_net_id);
|
||||
struct tipc_link *bcl = tn->bcl;
|
||||
|
||||
if (!bcl)
|
||||
return -ENOPROTOOPT;
|
||||
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
memset(&bcl->stats, 0, sizeof(bcl->stats));
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int tipc_bclink_set_queue_limits(u32 limit)
|
||||
int tipc_bclink_set_queue_limits(struct net *net, u32 limit)
|
||||
{
|
||||
struct tipc_net *tn = net_generic(net, tipc_net_id);
|
||||
struct tipc_link *bcl = tn->bcl;
|
||||
|
||||
if (!bcl)
|
||||
return -ENOPROTOOPT;
|
||||
if ((limit < TIPC_MIN_LINK_WIN) || (limit > TIPC_MAX_LINK_WIN))
|
||||
return -EINVAL;
|
||||
|
||||
tipc_bclink_lock();
|
||||
tipc_bclink_lock(net);
|
||||
tipc_link_set_queue_limits(bcl, limit);
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_unlock(net);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int tipc_bclink_init(struct net *net)
|
||||
{
|
||||
struct tipc_net *tn = net_generic(net, tipc_net_id);
|
||||
struct tipc_bcbearer *bcbearer;
|
||||
struct tipc_bclink *bclink;
|
||||
struct tipc_link *bcl;
|
||||
|
||||
bcbearer = kzalloc(sizeof(*bcbearer), GFP_ATOMIC);
|
||||
if (!bcbearer)
|
||||
|
|
@ -969,12 +948,16 @@ int tipc_bclink_init(struct net *net)
|
|||
spin_lock_init(&bclink->node.lock);
|
||||
__skb_queue_head_init(&bclink->node.waiting_sks);
|
||||
bcl->owner = &bclink->node;
|
||||
bcl->owner->net = net;
|
||||
bcl->max_pkt = MAX_PKT_DEFAULT_MCAST;
|
||||
tipc_link_set_queue_limits(bcl, BCLINK_WIN_DEFAULT);
|
||||
bcl->bearer_id = MAX_BEARERS;
|
||||
rcu_assign_pointer(tn->bearer_list[MAX_BEARERS], &bcbearer->bearer);
|
||||
bcl->state = WORKING_WORKING;
|
||||
strlcpy(bcl->name, tipc_bclink_name, TIPC_MAX_LINK_NAME);
|
||||
tn->bcbearer = bcbearer;
|
||||
tn->bclink = bclink;
|
||||
tn->bcl = bcl;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -982,14 +965,14 @@ void tipc_bclink_stop(struct net *net)
|
|||
{
|
||||
struct tipc_net *tn = net_generic(net, tipc_net_id);
|
||||
|
||||
tipc_bclink_lock();
|
||||
tipc_link_purge_queues(bcl);
|
||||
tipc_bclink_unlock();
|
||||
tipc_bclink_lock(net);
|
||||
tipc_link_purge_queues(tn->bcl);
|
||||
tipc_bclink_unlock(net);
|
||||
|
||||
RCU_INIT_POINTER(tn->bearer_list[BCBEARER], NULL);
|
||||
synchronize_net();
|
||||
kfree(bcbearer);
|
||||
kfree(bclink);
|
||||
kfree(tn->bcbearer);
|
||||
kfree(tn->bclink);
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -37,23 +37,13 @@
|
|||
#ifndef _TIPC_BCAST_H
|
||||
#define _TIPC_BCAST_H
|
||||
|
||||
#include "netlink.h"
|
||||
#include <linux/tipc_config.h>
|
||||
#include "link.h"
|
||||
#include "node.h"
|
||||
|
||||
#define MAX_NODES 4096
|
||||
#define WSIZE 32
|
||||
#define TIPC_BCLINK_RESET 1
|
||||
|
||||
/**
|
||||
* 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_node_map {
|
||||
u32 count;
|
||||
u32 map[MAX_NODES / WSIZE];
|
||||
};
|
||||
|
||||
#define PLSIZE 32
|
||||
#define TIPC_BCLINK_RESET 1
|
||||
#define PLSIZE 32
|
||||
#define BCBEARER MAX_BEARERS
|
||||
|
||||
/**
|
||||
* struct tipc_port_list - set of node local destination ports
|
||||
|
|
@ -67,9 +57,64 @@ struct tipc_port_list {
|
|||
u32 ports[PLSIZE];
|
||||
};
|
||||
|
||||
/**
|
||||
* 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_bcbearer_pair {
|
||||
struct tipc_bearer *primary;
|
||||
struct tipc_bearer *secondary;
|
||||
};
|
||||
|
||||
/**
|
||||
* 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_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 tipc_node_map bcast_nodes;
|
||||
struct tipc_node *retransmit_to;
|
||||
};
|
||||
|
||||
struct tipc_node;
|
||||
|
||||
extern const char tipc_bclink_name[];
|
||||
|
||||
/**
|
||||
|
|
@ -86,24 +131,24 @@ void tipc_port_list_free(struct tipc_port_list *pl_ptr);
|
|||
|
||||
int tipc_bclink_init(struct net *net);
|
||||
void tipc_bclink_stop(struct net *net);
|
||||
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);
|
||||
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 net *net, struct sk_buff *buf);
|
||||
u32 tipc_bclink_get_last_sent(void);
|
||||
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 net *net, 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);
|
||||
int tipc_bclink_stats(struct net *net, char *stats_buf, const u32 buf_size);
|
||||
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 net *net, struct sk_buff_head *list);
|
||||
void tipc_bclink_wakeup_users(struct net *net);
|
||||
int tipc_nl_add_bc_link(struct tipc_nl_msg *msg);
|
||||
int tipc_nl_add_bc_link(struct net *net, struct tipc_nl_msg *msg);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -40,6 +40,7 @@
|
|||
#include "bearer.h"
|
||||
#include "link.h"
|
||||
#include "discover.h"
|
||||
#include "bcast.h"
|
||||
|
||||
#define MAX_ADDR_STR 60
|
||||
|
||||
|
|
@ -482,8 +483,8 @@ void tipc_disable_l2_media(struct tipc_bearer *b)
|
|||
* @b_ptr: the bearer through which the packet is to be sent
|
||||
* @dest: peer destination address
|
||||
*/
|
||||
int tipc_l2_send_msg(struct sk_buff *buf, struct tipc_bearer *b,
|
||||
struct tipc_media_addr *dest)
|
||||
int tipc_l2_send_msg(struct net *net, struct sk_buff *buf,
|
||||
struct tipc_bearer *b, struct tipc_media_addr *dest)
|
||||
{
|
||||
struct sk_buff *clone;
|
||||
struct net_device *dev;
|
||||
|
|
@ -528,7 +529,7 @@ void tipc_bearer_send(struct net *net, u32 bearer_id, struct sk_buff *buf,
|
|||
rcu_read_lock();
|
||||
b_ptr = rcu_dereference_rtnl(tn->bearer_list[bearer_id]);
|
||||
if (likely(b_ptr))
|
||||
b_ptr->media->send_msg(buf, b_ptr, dest);
|
||||
b_ptr->media->send_msg(net, buf, b_ptr, dest);
|
||||
rcu_read_unlock();
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -37,12 +37,13 @@
|
|||
#ifndef _TIPC_BEARER_H
|
||||
#define _TIPC_BEARER_H
|
||||
|
||||
#include "bcast.h"
|
||||
#include "netlink.h"
|
||||
#include <net/genetlink.h>
|
||||
|
||||
#define MAX_BEARERS 2
|
||||
#define MAX_MEDIA 2
|
||||
#define MAX_NODES 4096
|
||||
#define WSIZE 32
|
||||
|
||||
/* Identifiers associated with TIPC message header media address info
|
||||
* - address info field is 32 bytes long
|
||||
|
|
@ -58,6 +59,16 @@
|
|||
#define TIPC_MEDIA_TYPE_ETH 1
|
||||
#define TIPC_MEDIA_TYPE_IB 2
|
||||
|
||||
/**
|
||||
* 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_node_map {
|
||||
u32 count;
|
||||
u32 map[MAX_NODES / WSIZE];
|
||||
};
|
||||
|
||||
/**
|
||||
* struct tipc_media_addr - destination address used by TIPC bearers
|
||||
* @value: address info (format defined by media)
|
||||
|
|
@ -89,7 +100,7 @@ struct tipc_bearer;
|
|||
* @name: media name
|
||||
*/
|
||||
struct tipc_media {
|
||||
int (*send_msg)(struct sk_buff *buf,
|
||||
int (*send_msg)(struct net *net, struct sk_buff *buf,
|
||||
struct tipc_bearer *b_ptr,
|
||||
struct tipc_media_addr *dest);
|
||||
int (*enable_media)(struct net *net, struct tipc_bearer *b_ptr);
|
||||
|
|
@ -157,8 +168,6 @@ struct tipc_bearer_names {
|
|||
char if_name[TIPC_MAX_IF_NAME];
|
||||
};
|
||||
|
||||
struct tipc_link;
|
||||
|
||||
/*
|
||||
* TIPC routines available to supported media types
|
||||
*/
|
||||
|
|
@ -193,8 +202,8 @@ void tipc_media_addr_printf(char *buf, int len, struct tipc_media_addr *a);
|
|||
struct sk_buff *tipc_media_get_names(void);
|
||||
int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b);
|
||||
void tipc_disable_l2_media(struct tipc_bearer *b);
|
||||
int tipc_l2_send_msg(struct sk_buff *buf, struct tipc_bearer *b,
|
||||
struct tipc_media_addr *dest);
|
||||
int tipc_l2_send_msg(struct net *net, struct sk_buff *buf,
|
||||
struct tipc_bearer *b, struct tipc_media_addr *dest);
|
||||
|
||||
struct sk_buff *tipc_bearer_get_names(struct net *net);
|
||||
void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest);
|
||||
|
|
|
|||
|
|
@ -61,6 +61,11 @@
|
|||
|
||||
#include "node.h"
|
||||
#include "bearer.h"
|
||||
#include "bcast.h"
|
||||
#include "netlink.h"
|
||||
#include "link.h"
|
||||
#include "node.h"
|
||||
#include "msg.h"
|
||||
|
||||
#define TIPC_MOD_VER "2.0.0"
|
||||
|
||||
|
|
@ -91,6 +96,11 @@ struct tipc_net {
|
|||
|
||||
/* Bearer list */
|
||||
struct tipc_bearer __rcu *bearer_list[MAX_BEARERS + 1];
|
||||
|
||||
/* Broadcast link */
|
||||
struct tipc_bcbearer *bcbearer;
|
||||
struct tipc_bclink *bclink;
|
||||
struct tipc_link *bcl;
|
||||
};
|
||||
|
||||
#ifdef CONFIG_SYSCTL
|
||||
|
|
|
|||
|
|
@ -941,6 +941,7 @@ static void link_retransmit_failure(struct tipc_link *l_ptr,
|
|||
struct sk_buff *buf)
|
||||
{
|
||||
struct tipc_msg *msg = buf_msg(buf);
|
||||
struct net *net = l_ptr->owner->net;
|
||||
|
||||
pr_warn("Retransmission failure on link <%s>\n", l_ptr->name);
|
||||
|
||||
|
|
@ -958,7 +959,7 @@ static void link_retransmit_failure(struct tipc_link *l_ptr,
|
|||
pr_cont("Outstanding acks: %lu\n",
|
||||
(unsigned long) TIPC_SKB_CB(buf)->handle);
|
||||
|
||||
n_ptr = tipc_bclink_retransmit_to();
|
||||
n_ptr = tipc_bclink_retransmit_to(net);
|
||||
tipc_node_lock(n_ptr);
|
||||
|
||||
tipc_addr_string_fill(addr_string, n_ptr->addr);
|
||||
|
|
@ -973,7 +974,7 @@ static void link_retransmit_failure(struct tipc_link *l_ptr,
|
|||
|
||||
tipc_node_unlock(n_ptr);
|
||||
|
||||
tipc_bclink_set_flags(TIPC_BCLINK_RESET);
|
||||
tipc_bclink_set_flags(net, TIPC_BCLINK_RESET);
|
||||
l_ptr->stale_count = 0;
|
||||
}
|
||||
}
|
||||
|
|
@ -1404,7 +1405,7 @@ void tipc_link_proto_xmit(struct tipc_link *l_ptr, u32 msg_typ, int probe_msg,
|
|||
msg_set_type(msg, msg_typ);
|
||||
msg_set_net_plane(msg, l_ptr->net_plane);
|
||||
msg_set_bcast_ack(msg, l_ptr->owner->bclink.last_in);
|
||||
msg_set_last_bcast(msg, tipc_bclink_get_last_sent());
|
||||
msg_set_last_bcast(msg, tipc_bclink_get_last_sent(l_ptr->owner->net));
|
||||
|
||||
if (msg_typ == STATE_MSG) {
|
||||
u32 next_sent = mod(l_ptr->next_out_no);
|
||||
|
|
@ -2105,7 +2106,7 @@ struct sk_buff *tipc_link_cmd_config(struct net *net, const void *req_tlv_area,
|
|||
|
||||
if (!strcmp(args->name, tipc_bclink_name)) {
|
||||
if ((cmd == TIPC_CMD_SET_LINK_WINDOW) &&
|
||||
(tipc_bclink_set_queue_limits(new_value) == 0))
|
||||
(tipc_bclink_set_queue_limits(net, new_value) == 0))
|
||||
return tipc_cfg_reply_none();
|
||||
return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
|
||||
" (cannot change setting on broadcast link)");
|
||||
|
|
@ -2143,7 +2144,7 @@ struct sk_buff *tipc_link_cmd_reset_stats(struct net *net,
|
|||
|
||||
link_name = (char *)TLV_DATA(req_tlv_area);
|
||||
if (!strcmp(link_name, tipc_bclink_name)) {
|
||||
if (tipc_bclink_reset_stats())
|
||||
if (tipc_bclink_reset_stats(net))
|
||||
return tipc_cfg_reply_error_string("link not found");
|
||||
return tipc_cfg_reply_none();
|
||||
}
|
||||
|
|
@ -2191,7 +2192,7 @@ static int tipc_link_stats(struct net *net, const char *name, char *buf,
|
|||
int ret;
|
||||
|
||||
if (!strcmp(name, tipc_bclink_name))
|
||||
return tipc_bclink_stats(buf, buf_size);
|
||||
return tipc_bclink_stats(net, buf, buf_size);
|
||||
|
||||
node = tipc_link_find_owner(net, name, &bearer_id);
|
||||
if (!node)
|
||||
|
|
@ -2640,7 +2641,7 @@ int tipc_nl_link_dump(struct sk_buff *skb, struct netlink_callback *cb)
|
|||
prev_node = node->addr;
|
||||
}
|
||||
} else {
|
||||
err = tipc_nl_add_bc_link(&msg);
|
||||
err = tipc_nl_add_bc_link(net, &msg);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
|
|
@ -2739,7 +2740,7 @@ int tipc_nl_link_reset_stats(struct sk_buff *skb, struct genl_info *info)
|
|||
link_name = nla_data(attrs[TIPC_NLA_LINK_NAME]);
|
||||
|
||||
if (strcmp(link_name, tipc_bclink_name) == 0) {
|
||||
err = tipc_bclink_reset_stats();
|
||||
err = tipc_bclink_reset_stats(net);
|
||||
if (err)
|
||||
return err;
|
||||
return 0;
|
||||
|
|
|
|||
|
|
@ -37,7 +37,7 @@
|
|||
#ifndef _TIPC_MSG_H
|
||||
#define _TIPC_MSG_H
|
||||
|
||||
#include "bearer.h"
|
||||
#include <linux/tipc.h>
|
||||
|
||||
/*
|
||||
* Constants and routines used to read and write TIPC payload message headers
|
||||
|
|
|
|||
|
|
@ -39,6 +39,7 @@
|
|||
#include "name_table.h"
|
||||
#include "name_distr.h"
|
||||
#include "subscr.h"
|
||||
#include "bcast.h"
|
||||
|
||||
#define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */
|
||||
|
||||
|
|
|
|||
|
|
@ -41,6 +41,7 @@
|
|||
#include "socket.h"
|
||||
#include "node.h"
|
||||
#include "config.h"
|
||||
#include "bcast.h"
|
||||
|
||||
static const struct nla_policy tipc_nl_net_policy[TIPC_NLA_NET_MAX + 1] = {
|
||||
[TIPC_NLA_NET_UNSPEC] = { .type = NLA_UNSPEC },
|
||||
|
|
|
|||
|
|
@ -368,8 +368,8 @@ static void node_established_contact(struct tipc_node *n_ptr)
|
|||
{
|
||||
n_ptr->action_flags |= TIPC_NOTIFY_NODE_UP;
|
||||
n_ptr->bclink.oos_state = 0;
|
||||
n_ptr->bclink.acked = tipc_bclink_get_last_sent();
|
||||
tipc_bclink_add_node(n_ptr->addr);
|
||||
n_ptr->bclink.acked = tipc_bclink_get_last_sent(n_ptr->net);
|
||||
tipc_bclink_add_node(n_ptr->net, n_ptr->addr);
|
||||
}
|
||||
|
||||
static void node_lost_contact(struct tipc_node *n_ptr)
|
||||
|
|
@ -389,7 +389,7 @@ static void node_lost_contact(struct tipc_node *n_ptr)
|
|||
n_ptr->bclink.reasm_buf = NULL;
|
||||
}
|
||||
|
||||
tipc_bclink_remove_node(n_ptr->addr);
|
||||
tipc_bclink_remove_node(n_ptr->net, n_ptr->addr);
|
||||
tipc_bclink_acknowledge(n_ptr, INVALID_LINK_SEQ);
|
||||
|
||||
n_ptr->bclink.recv_permitted = false;
|
||||
|
|
|
|||
Loading…
Reference in a new issue