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firewire: net: allow for unordered unit discovery

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Decouple the creation and destruction of the net_device from the order
of discovery and removal of nodes with RFC 2734 unit directories since
there is no reliable order.  The net_device is now created when the
first RFC 2734 unit on a card is discovered, and destroyed when the last
RFC 2734 unit on a card went away.  This includes all remote units as
well as the local unit, which is therefore tracked as a peer now too.

Also, locking around the list of peers is slightly extended to guard
against peer removal.  As a side effect, fwnet_peer.pdg_lock has become
superfluous and is deleted.

Peer data (max_rec, speed, node ID, generation) are updated more
carefully.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter
2009-06-14 11:45:27 +02:00
parent f91e3bd842
commit 5a124d382e
3 changed files with 216 additions and 262 deletions
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4
include/linux/firewire.h
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@@ -131,10 +131,6 @@ struct fw_card {
bool broadcast_channel_allocated;
u32 broadcast_channel;
u32 topology_map[(CSR_TOPOLOGY_MAP_END - CSR_TOPOLOGY_MAP) / 4];
/* firewire-net driver data */
void *netdev;
struct list_head peer_list;
};
static inline struct fw_card *fw_card_get(struct fw_card *card)