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RDS: Rewrite rds_send_xmit

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Simplify rds_send_xmit().

Send a congestion map (via xmit_cong_map) without
decrementing send_quota.

Move resetting of conn xmit variables to end of loop.

Update comments.

Implement a special case to turn off sending an rds header
when there is an atomic op and no other data.

Signed-off-by: Andy Grover <andy.grover@oracle.com>
This commit is contained in:
Andy Grover
2010-02-03 19:36:44 -08:00
parent 6c7cc6e469
commit 5b2366bd28
2 changed files with 73 additions and 63 deletions
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5
net/rds/rds.h
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@ -96,8 +96,9 @@ struct rds_connection {
unsigned long c_xmit_sg;
unsigned int c_xmit_hdr_off;
unsigned int c_xmit_data_off;
unsigned int c_xmit_rdma_sent;
unsigned int c_xmit_atomic_sent;
unsigned int c_xmit_rdma_sent;
unsigned int c_xmit_data_sent;
spinlock_t c_lock; /* protect msg queues */
u64 c_next_tx_seq;
@ -120,8 +121,6 @@ struct rds_connection {
struct list_head c_map_item;
unsigned long c_map_queued;
unsigned long c_map_offset;
unsigned long c_map_bytes;
unsigned int c_unacked_packets;
unsigned int c_unacked_bytes;