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| author | Jon Paul Maloy <jon.maloy@ericsson.com> | 2015-03-13 23:08:10 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-14 21:38:32 +0300 |
| commit | 05dcc5aa4dcced4f59f925625cea669e82b75519 (patch) | |
| tree | 0a516e1012ee7e9b7eee037d8e31278a425e7d68 /net/tipc/link.h | |
| parent | 2cdf3918e47e98c8f34f7a64455ea9fd433756e7 (diff) | |
| download | linux-05dcc5aa4dcced4f59f925625cea669e82b75519.tar.xz | |
tipc: split link outqueue
struct tipc_link contains one single queue for outgoing packets,
where both transmitted and waiting packets are queued.
This infrastructure is hard to maintain, because we need
to keep a number of fields to keep track of which packets are
sent or unsent, and the number of packets in each category.
A lot of code becomes simpler if we split this queue into a transmission
queue, where sent/unacknowledged packets are kept, and a backlog queue,
where we keep the not yet sent packets.
In this commit we do this separation.
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/link.h')
| -rw-r--r-- | net/tipc/link.h | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/net/tipc/link.h b/net/tipc/link.h index 7aeb52092bf3..eec3ecf2d450 100644 --- a/net/tipc/link.h +++ b/net/tipc/link.h @@ -124,7 +124,8 @@ struct tipc_stats { * @max_pkt: current maximum packet size for this link * @max_pkt_target: desired maximum packet size for this link * @max_pkt_probes: # of probes based on current (max_pkt, max_pkt_target) - * @outqueue: outbound message queue + * @transmitq: queue for sent, non-acked messages + * @backlogq: queue for messages waiting to be sent * @next_out_no: next sequence number to use for outbound messages * @last_retransmitted: sequence number of most recently retransmitted message * @stale_count: # of identical retransmit requests made by peer @@ -177,20 +178,21 @@ struct tipc_link { u32 max_pkt_probes; /* Sending */ - struct sk_buff_head outqueue; + struct sk_buff_head transmq; + struct sk_buff_head backlogq; u32 next_out_no; + u32 window; u32 last_retransmitted; u32 stale_count; /* Reception */ u32 next_in_no; - struct sk_buff_head deferred_queue; - u32 unacked_window; + u32 rcv_unacked; + struct sk_buff_head deferdq; struct sk_buff_head inputq; struct sk_buff_head namedq; /* Congestion handling */ - struct sk_buff *next_out; struct sk_buff_head wakeupq; /* Fragmentation/reassembly */ @@ -302,9 +304,4 @@ static inline int link_reset_reset(struct tipc_link *l_ptr) return l_ptr->state == RESET_RESET; } -static inline int link_congested(struct tipc_link *l_ptr) -{ - return skb_queue_len(&l_ptr->outqueue) >= l_ptr->queue_limit[0]; -} - #endif |