diff options
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/core.h | 1 | ||||
| -rw-r--r-- | net/tipc/name_distr.c | 69 | ||||
| -rw-r--r-- | net/tipc/name_distr.h | 1 | ||||
| -rw-r--r-- | net/tipc/name_table.c | 8 | ||||
| -rw-r--r-- | net/tipc/sysctl.c | 7 |
5 files changed, 79 insertions, 7 deletions
diff --git a/net/tipc/core.h b/net/tipc/core.h index d2607a8..f773b14 100644 --- a/net/tipc/core.h +++ b/net/tipc/core.h @@ -81,6 +81,7 @@ extern u32 tipc_own_addr __read_mostly; extern int tipc_max_ports __read_mostly; extern int tipc_net_id __read_mostly; extern int sysctl_tipc_rmem[3] __read_mostly; +extern int sysctl_tipc_named_timeout __read_mostly; /* * Other global variables diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c index 0591f33..780ef71 100644 --- a/net/tipc/name_distr.c +++ b/net/tipc/name_distr.c @@ -1,7 +1,7 @@ /* * net/tipc/name_distr.c: TIPC name distribution code * - * Copyright (c) 2000-2006, Ericsson AB + * Copyright (c) 2000-2006, 2014, Ericsson AB * Copyright (c) 2005, 2010-2011, Wind River Systems * All rights reserved. * @@ -71,6 +71,21 @@ static struct publ_list *publ_lists[] = { }; +int sysctl_tipc_named_timeout __read_mostly = 2000; + +/** + * struct tipc_dist_queue - queue holding deferred name table updates + */ +static struct list_head tipc_dist_queue = LIST_HEAD_INIT(tipc_dist_queue); + +struct distr_queue_item { + struct distr_item i; + u32 dtype; + u32 node; + unsigned long expires; + struct list_head next; +}; + /** * publ_to_item - add publication info to a publication message */ @@ -299,6 +314,52 @@ struct publication *tipc_update_nametbl(struct distr_item *i, u32 node, } /** + * tipc_named_add_backlog - add a failed name table update to the backlog + * + */ +static void tipc_named_add_backlog(struct distr_item *i, u32 type, u32 node) +{ + struct distr_queue_item *e; + unsigned long now = get_jiffies_64(); + + e = kzalloc(sizeof(*e), GFP_ATOMIC); + if (!e) + return; + e->dtype = type; + e->node = node; + e->expires = now + msecs_to_jiffies(sysctl_tipc_named_timeout); + memcpy(e, i, sizeof(*i)); + list_add_tail(&e->next, &tipc_dist_queue); +} + +/** + * tipc_named_process_backlog - try to process any pending name table updates + * from the network. + */ +void tipc_named_process_backlog(void) +{ + struct distr_queue_item *e, *tmp; + char addr[16]; + unsigned long now = get_jiffies_64(); + + list_for_each_entry_safe(e, tmp, &tipc_dist_queue, next) { + if (time_after(e->expires, now)) { + if (!tipc_update_nametbl(&e->i, e->node, e->dtype)) + continue; + } else { + tipc_addr_string_fill(addr, e->node); + pr_warn_ratelimited("Dropping name table update (%d) of {%u, %u, %u} from %s key=%u\n", + e->dtype, ntohl(e->i.type), + ntohl(e->i.lower), + ntohl(e->i.upper), + addr, ntohl(e->i.key)); + } + list_del(&e->next); + kfree(e); + } +} + +/** * tipc_named_rcv - process name table update message sent by another node */ void tipc_named_rcv(struct sk_buff *buf) @@ -306,13 +367,15 @@ void tipc_named_rcv(struct sk_buff *buf) struct tipc_msg *msg = buf_msg(buf); struct distr_item *item = (struct distr_item *)msg_data(msg); u32 count = msg_data_sz(msg) / ITEM_SIZE; + u32 node = msg_orignode(msg); write_lock_bh(&tipc_nametbl_lock); while (count--) { - tipc_update_nametbl(item, msg_orignode(msg), - msg_type(msg)); + if (!tipc_update_nametbl(item, node, msg_type(msg))) + tipc_named_add_backlog(item, msg_type(msg), node); item++; } + tipc_named_process_backlog(); write_unlock_bh(&tipc_nametbl_lock); kfree_skb(buf); } diff --git a/net/tipc/name_distr.h b/net/tipc/name_distr.h index 8afe32b..b9e75fe 100644 --- a/net/tipc/name_distr.h +++ b/net/tipc/name_distr.h @@ -73,5 +73,6 @@ void named_cluster_distribute(struct sk_buff *buf); void tipc_named_node_up(u32 dnode); void tipc_named_rcv(struct sk_buff *buf); void tipc_named_reinit(void); +void tipc_named_process_backlog(void); #endif diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c index c058e30..3a6a0a7 100644 --- a/net/tipc/name_table.c +++ b/net/tipc/name_table.c @@ -261,8 +261,6 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq, /* Lower end overlaps existing entry => need an exact match */ if ((sseq->lower != lower) || (sseq->upper != upper)) { - pr_warn("Cannot publish {%u,%u,%u}, overlap error\n", - type, lower, upper); return NULL; } @@ -284,8 +282,6 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq, /* Fail if upper end overlaps into an existing entry */ if ((inspos < nseq->first_free) && (upper >= nseq->sseqs[inspos].lower)) { - pr_warn("Cannot publish {%u,%u,%u}, overlap error\n", - type, lower, upper); return NULL; } @@ -677,6 +673,8 @@ struct publication *tipc_nametbl_publish(u32 type, u32 lower, u32 upper, if (likely(publ)) { table.local_publ_count++; buf = tipc_named_publish(publ); + /* Any pending external events? */ + tipc_named_process_backlog(); } write_unlock_bh(&tipc_nametbl_lock); @@ -698,6 +696,8 @@ int tipc_nametbl_withdraw(u32 type, u32 lower, u32 ref, u32 key) if (likely(publ)) { table.local_publ_count--; buf = tipc_named_withdraw(publ); + /* Any pending external events? */ + tipc_named_process_backlog(); write_unlock_bh(&tipc_nametbl_lock); list_del_init(&publ->pport_list); kfree(publ); diff --git a/net/tipc/sysctl.c b/net/tipc/sysctl.c index f3fef93..1a779b1 100644 --- a/net/tipc/sysctl.c +++ b/net/tipc/sysctl.c @@ -47,6 +47,13 @@ static struct ctl_table tipc_table[] = { .mode = 0644, .proc_handler = proc_dointvec, }, + { + .procname = "named_timeout", + .data = &sysctl_tipc_named_timeout, + .maxlen = sizeof(sysctl_tipc_named_timeout), + .mode = 0644, + .proc_handler = proc_dointvec, + }, {} }; |
