X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=net%2Fnetrom%2Fnr_route.c;h=8f88964099ef05744db60430922c2e538ebffcc5;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=dac2e36fcb39b90e561124f5d3534b72d239ac47;hpb=9213980e6a70d8473e0ffd4b39ab5b6caaba9ff5;p=linux-2.6.git diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c index dac2e36fc..8f8896409 100644 --- a/net/netrom/nr_route.c +++ b/net/netrom/nr_route.c @@ -41,11 +41,11 @@ static unsigned int nr_neigh_no = 1; static HLIST_HEAD(nr_node_list); -static spinlock_t nr_node_list_lock = SPIN_LOCK_UNLOCKED; +static DEFINE_SPINLOCK(nr_node_list_lock); static HLIST_HEAD(nr_neigh_list); -static spinlock_t nr_neigh_list_lock = SPIN_LOCK_UNLOCKED; +static DEFINE_SPINLOCK(nr_neigh_list_lock); -struct nr_node *nr_node_get(ax25_address *callsign) +static struct nr_node *nr_node_get(ax25_address *callsign) { struct nr_node *found = NULL; struct nr_node *nr_node; @@ -62,7 +62,8 @@ struct nr_node *nr_node_get(ax25_address *callsign) return found; } -struct nr_neigh *nr_neigh_get_dev(ax25_address *callsign, struct net_device *dev) +static struct nr_neigh *nr_neigh_get_dev(ax25_address *callsign, + struct net_device *dev) { struct nr_neigh *found = NULL; struct nr_neigh *nr_neigh; @@ -86,8 +87,9 @@ static void nr_remove_neigh(struct nr_neigh *); * Add a new route to a node, and in the process add the node and the * neighbour if it is new. */ -static int nr_add_node(ax25_address *nr, const char *mnemonic, ax25_address *ax25, - ax25_digi *ax25_digi, struct net_device *dev, int quality, int obs_count) +static int __must_check nr_add_node(ax25_address *nr, const char *mnemonic, + ax25_address *ax25, ax25_digi *ax25_digi, struct net_device *dev, + int quality, int obs_count) { struct nr_node *nr_node; struct nr_neigh *nr_neigh; @@ -154,14 +156,15 @@ static int nr_add_node(ax25_address *nr, const char *mnemonic, ax25_address *ax2 atomic_set(&nr_neigh->refcount, 1); if (ax25_digi != NULL && ax25_digi->ndigi > 0) { - if ((nr_neigh->digipeat = kmalloc(sizeof(*ax25_digi), GFP_KERNEL)) == NULL) { + nr_neigh->digipeat = kmemdup(ax25_digi, + sizeof(*ax25_digi), + GFP_KERNEL); + if (nr_neigh->digipeat == NULL) { kfree(nr_neigh); if (nr_node) nr_node_put(nr_node); return -ENOMEM; } - memcpy(nr_neigh->digipeat, ax25_digi, - sizeof(*ax25_digi)); } spin_lock_bh(&nr_neigh_list_lock); @@ -186,7 +189,7 @@ static int nr_add_node(ax25_address *nr, const char *mnemonic, ax25_address *ax2 nr_node->which = 0; nr_node->count = 1; atomic_set(&nr_node->refcount, 1); - nr_node->node_lock = SPIN_LOCK_UNLOCKED; + spin_lock_init(&nr_node->node_lock); nr_node->routes[0].quality = quality; nr_node->routes[0].obs_count = obs_count; @@ -404,7 +407,8 @@ static int nr_del_node(ax25_address *callsign, ax25_address *neighbour, struct n /* * Lock a neighbour with a quality. */ -static int nr_add_neigh(ax25_address *callsign, ax25_digi *ax25_digi, struct net_device *dev, unsigned int quality) +static int __must_check nr_add_neigh(ax25_address *callsign, + ax25_digi *ax25_digi, struct net_device *dev, unsigned int quality) { struct nr_neigh *nr_neigh; @@ -431,11 +435,12 @@ static int nr_add_neigh(ax25_address *callsign, ax25_digi *ax25_digi, struct net atomic_set(&nr_neigh->refcount, 1); if (ax25_digi != NULL && ax25_digi->ndigi > 0) { - if ((nr_neigh->digipeat = kmalloc(sizeof(*ax25_digi), GFP_KERNEL)) == NULL) { + nr_neigh->digipeat = kmemdup(ax25_digi, sizeof(*ax25_digi), + GFP_KERNEL); + if (nr_neigh->digipeat == NULL) { kfree(nr_neigh); return -ENOMEM; } - memcpy(nr_neigh->digipeat, ax25_digi, sizeof(*ax25_digi)); } spin_lock_bh(&nr_neigh_list_lock); @@ -724,15 +729,17 @@ void nr_link_failed(ax25_cb *ax25, int reason) struct nr_node *nr_node = NULL; spin_lock_bh(&nr_neigh_list_lock); - nr_neigh_for_each(s, node, &nr_neigh_list) + nr_neigh_for_each(s, node, &nr_neigh_list) { if (s->ax25 == ax25) { nr_neigh_hold(s); nr_neigh = s; break; } + } spin_unlock_bh(&nr_neigh_list_lock); - if (nr_neigh == NULL) return; + if (nr_neigh == NULL) + return; nr_neigh->ax25 = NULL; ax25_cb_put(ax25); @@ -742,11 +749,13 @@ void nr_link_failed(ax25_cb *ax25, int reason) return; } spin_lock_bh(&nr_node_list_lock); - nr_node_for_each(nr_node, node, &nr_node_list) + nr_node_for_each(nr_node, node, &nr_node_list) { nr_node_lock(nr_node); - if (nr_node->which < nr_node->count && nr_node->routes[nr_node->which].neighbour == nr_neigh) + if (nr_node->which < nr_node->count && + nr_node->routes[nr_node->which].neighbour == nr_neigh) nr_node->which++; nr_node_unlock(nr_node); + } spin_unlock_bh(&nr_node_list_lock); nr_neigh_put(nr_neigh); } @@ -770,9 +779,13 @@ int nr_route_frame(struct sk_buff *skb, ax25_cb *ax25) nr_src = (ax25_address *)(skb->data + 0); nr_dest = (ax25_address *)(skb->data + 7); - if (ax25 != NULL) - nr_add_node(nr_src, "", &ax25->dest_addr, ax25->digipeat, - ax25->ax25_dev->dev, 0, sysctl_netrom_obsolescence_count_initialiser); + if (ax25 != NULL) { + ret = nr_add_node(nr_src, "", &ax25->dest_addr, ax25->digipeat, + ax25->ax25_dev->dev, 0, + sysctl_netrom_obsolescence_count_initialiser); + if (ret) + return ret; + } if ((dev = nr_dev_get(nr_dest)) != NULL) { /* Its for me */ if (ax25 == NULL) /* Its from me */ @@ -837,6 +850,7 @@ int nr_route_frame(struct sk_buff *skb, ax25_cb *ax25) ret = (nr_neigh->ax25 != NULL); nr_node_unlock(nr_node); nr_node_put(nr_node); + return ret; } @@ -880,6 +894,7 @@ static void nr_node_stop(struct seq_file *seq, void *v) static int nr_node_show(struct seq_file *seq, void *v) { + char buf[11]; int i; if (v == SEQ_START_TOKEN) @@ -889,7 +904,7 @@ static int nr_node_show(struct seq_file *seq, void *v) struct nr_node *nr_node = v; nr_node_lock(nr_node); seq_printf(seq, "%-9s %-7s %d %d", - ax2asc(&nr_node->callsign), + ax2asc(buf, &nr_node->callsign), (nr_node->mnemonic[0] == '\0') ? "*" : nr_node->mnemonic, nr_node->which + 1, nr_node->count); @@ -963,6 +978,7 @@ static void nr_neigh_stop(struct seq_file *seq, void *v) static int nr_neigh_show(struct seq_file *seq, void *v) { + char buf[11]; int i; if (v == SEQ_START_TOKEN) @@ -972,7 +988,7 @@ static int nr_neigh_show(struct seq_file *seq, void *v) seq_printf(seq, "%05d %-9s %-4s %3d %d %3d %3d", nr_neigh->number, - ax2asc(&nr_neigh->callsign), + ax2asc(buf, &nr_neigh->callsign), nr_neigh->dev ? nr_neigh->dev->name : "???", nr_neigh->quality, nr_neigh->locked, @@ -982,7 +998,7 @@ static int nr_neigh_show(struct seq_file *seq, void *v) if (nr_neigh->digipeat != NULL) { for (i = 0; i < nr_neigh->digipeat->ndigi; i++) seq_printf(seq, " %s", - ax2asc(&nr_neigh->digipeat->calls[i])); + ax2asc(buf, &nr_neigh->digipeat->calls[i])); } seq_puts(seq, "\n");