Chuck Lever eddae8be79 xprtrdma: Fix cwnd update ordering ... [ Upstream commit 35d8b10a25884050bb3b0149b62c3818ec59f77c ] After a reconnect, the reply handler is opening the cwnd (and thus enabling more RPC Calls to be sent) /before/ rpcrdma_post_recvs() can post enough Receive WRs to receive their replies. This causes an RNR and the new connection is lost immediately. The race is most clearly exposed when KASAN and disconnect injection are enabled. This slows down rpcrdma_rep_create() enough to allow the send side to post a bunch of RPC Calls before the Receive completion handler can invoke ib_post_recv(). Fixes: 2ae50ad68c ("xprtrdma: Close window between waking RPC senders and posting Receives") Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-05-19 10:13:04 +02:00
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backchannel.c	xprtrdma: kmalloc rpcrdma_ep separate from rpcrdma_xprt	2020-03-27 10:47:25 -04:00
frwr_ops.c	xprtrdma: Avoid Receive Queue wrapping	2021-05-19 10:13:04 +02:00
Makefile	xprtrdma: Remove support for FMR memory registration	2019-01-02 12:05:17 -05:00
module.c	SUNRPC: xprt_load_transport() needs to support the netid "rdma6"	2020-12-30 11:53:30 +01:00
rpc_rdma.c	xprtrdma: Fix cwnd update ordering	2021-05-19 10:13:04 +02:00
svc_rdma_backchannel.c	svcrdma: disable timeouts on rdma backchannel	2021-03-25 09:04:08 +01:00
svc_rdma_recvfrom.c	svcrdma: Remove transport reference counting	2020-07-28 10:18:14 -04:00
svc_rdma_rw.c	net: sunrpc: delete repeated words	2020-09-25 18:01:26 -04:00
svc_rdma_sendto.c	svcrdma: fix bounce buffers for unaligned offsets and multiple pages	2020-10-16 15:15:04 -04:00
svc_rdma_transport.c	svcrdma: Hold private mutex while invoking rdma_accept()	2021-03-04 11:38:08 +01:00
svc_rdma.c	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
transport.c	SUNRPC: Move fault injection call sites	2021-05-19 10:13:03 +02:00
verbs.c	xprtrdma: Fix cwnd update ordering	2021-05-19 10:13:04 +02:00
xprt_rdma.h	xprtrdma: Fix cwnd update ordering	2021-05-19 10:13:04 +02:00