path: root/net/rds/ib_recv.c
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authorZach Brown <>2010-07-14 13:55:35 -0700
committerAndy Grover <>2010-09-08 18:16:40 -0700
commitf046011cd73c372267befd10242988eb744649fe (patch)
treed184275400dee81f2a5027728bda849bec338d99 /net/rds/ib_recv.c
parentef87b7ea39a91906218a262686bcb8bad8b6b46e (diff)
RDS/IB: track signaled sends
We're seeing bugs today where IB connection shutdown clears the send ring while the tasklet is processing completed sends. Implementation details cause this to dereference a null pointer. Shutdown needs to wait for send completion to stop before tearing down the connection. We can't simply wait for the ring to empty because it may contain unsignaled sends that will never be processed. This patch tracks the number of signaled sends that we've posted and waits for them to complete. It also makes sure that the tasklet has finished executing. Signed-off-by: Zach Brown <>
Diffstat (limited to 'net/rds/ib_recv.c')
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