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| author | Allan Stephens <Allan.Stephens@windriver.com> | 2011-01-18 19:53:16 +0100 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2011-02-24 00:05:12 +0100 |
| commit | 01d83eddc55c138cbb24a5917d5271c0b24956a1 (patch) | |
| tree | 4f955e6fa50ac93de90a496749aea82b4411746a /net/tipc/bcast.c | |
| parent | tipc: Clean out all remaining instances of #if 0'd unused code (diff) | |
| download | linux-01d83eddc55c138cbb24a5917d5271c0b24956a1.tar.xz linux-01d83eddc55c138cbb24a5917d5271c0b24956a1.zip | |
tipc: Clean up tracking of node requesting a broadcast retransmit
Allows the broadcast link to track the node that is requesting a retransmit
in a new field dedicated to that purpose. This replaces the existing
mechanism that (ab)uses an existing node structure linked list field to do
the tracking.
Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'net/tipc/bcast.c')
| -rw-r--r-- | net/tipc/bcast.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/net/tipc/bcast.c b/net/tipc/bcast.c index b4d659df465f..a5eb7dbfa0c3 100644 --- a/net/tipc/bcast.c +++ b/net/tipc/bcast.c @@ -93,6 +93,7 @@ struct bcbearer { * struct bclink - link used for broadcast messages * @link: (non-standard) broadcast link structure * @node: (non-standard) node structure representing b'cast link's peer node + * @retransmit_to: node that most recently requested a retransmit * * Handles sequence numbering, fragmentation, bundling, etc. */ @@ -100,6 +101,7 @@ struct bcbearer { struct bclink { struct link link; struct tipc_node node; + struct tipc_node *retransmit_to; }; @@ -184,6 +186,17 @@ static int bclink_ack_allowed(u32 n) /** + * tipc_bclink_retransmit_to - get most recent node to request retransmission + * + * Called with bc_lock locked + */ + +struct tipc_node *tipc_bclink_retransmit_to(void) +{ + return bclink->retransmit_to; +} + +/** * bclink_retransmit_pkt - retransmit broadcast packets * @after: sequence number of last packet to *not* retransmit * @to: sequence number of last packet to retransmit @@ -444,10 +457,9 @@ void tipc_bclink_recv_pkt(struct sk_buff *buf) tipc_node_unlock(node); spin_lock_bh(&bc_lock); bcl->stats.recv_nacks++; - bcl->owner->next = node; /* remember requestor */ + bclink->retransmit_to = node; bclink_retransmit_pkt(msg_bcgap_after(msg), msg_bcgap_to(msg)); - bcl->owner->next = NULL; spin_unlock_bh(&bc_lock); } else { tipc_bclink_peek_nack(msg_destnode(msg), |