linux-stable.git - Linux kernel stable tree

	Commit message (Collapse)	Author	Age	Files	Lines
*	net/smc: no socket state changes in tasklet context	Ursula Braun	2017-04-11	1	-0/+1
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Several state changes occur during SMC socket closing. Currently state changes triggered locally occur in process context with lock_sock() taken while state changes triggered by peer occur in tasklet context with bh_lock_sock() taken. bh_lock_sock() does not wait till a lock_sock(() task in process context is finished. This may lead to races in socket state transitions resulting in dangling SMC-sockets, or it may lead to duplicate SMC socket freeing. This patch introduces a closing worker to run all state changes under lock_sock(). Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Reported-by: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: netlink interface for SMC sockets	Ursula Braun	2017-01-09	1	-0/+2
\| \| \| \| \| \| \| \|	Support for SMC socket monitoring via netlink sockets of protocol NETLINK_SOCK_DIAG. Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: socket closing and linkgroup cleanup	Ursula Braun	2017-01-09	1	-0/+18
\| \| \| \| \| \| \| \|	smc_shutdown() and smc_release() handling delayed linkgroup cleanup for linkgroups without connections Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: receive data from RMBE	Ursula Braun	2017-01-09	1	-0/+4
\| \| \| \| \| \| \|	move RMBE data into user space buffer and update managing cursors Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: send data (through RDMA)	Ursula Braun	2017-01-09	1	-0/+1
\| \| \| \| \| \| \|	copy data to kernel send buffer, and trigger RDMA write Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: connection data control (CDC)	Ursula Braun	2017-01-09	1	-0/+97
\| \| \| \| \| \| \|	send and receive CDC messages (via IB message send and CQE) Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: initialize IB transport incl. PD, MR, QP, CQ, event, WR	Ursula Braun	2017-01-09	1	-0/+1
\| \| \| \| \| \| \| \|	Prepare the link for RDMA transport: Create a queue pair (QP) and move it into the state Ready-To-Receive (RTR). Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: work request (WR) base for use by LLC and CDC	Ursula Braun	2017-01-09	1	-0/+5
\| \| \| \| \| \| \| \| \| \| \| \|	The base containers for RDMA transport are work requests and completion queue entries processed through Infiniband verbs: * allocate and initialize these areas * map these areas to DMA * implement the basic communication consisting of work request posting and receival of completion queue events Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: remote memory buffers (RMBs)	Ursula Braun	2017-01-09	1	-0/+45
\| \| \| \| \| \| \| \| \| \|	* allocate data RMB memory for sending and receiving * size depends on the maximum socket send and receive buffers * allocated RMBs are kept during life time of the owning link group * map the allocated RMBs to DMA Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: connection and link group creation	Ursula Braun	2017-01-09	1	-0/+36
\| \| \| \| \| \| \| \| \|	* create smc_connection for SMC-sockets * determine suitable link group for a connection * create a new link group if necessary Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: CLC handshake (incl. preparation steps)	Ursula Braun	2017-01-09	1	-0/+22
\| \| \| \| \| \| \|	* CLC (Connection Layer Control) handshake Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: introduce SMC as an IB-client	Ursula Braun	2017-01-09	1	-0/+6
\| \| \| \| \| \| \|	* create a list of SMC IB-devices Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
*	smc: establish new socket family	Ursula Braun	2017-01-09	1	-0/+37
	* enable smc module loading and unloading * register new socket family * basic smc socket creation and deletion * use backing TCP socket to run CLC (Connection Layer Control) handshake of SMC protocol * Setup for infiniband traffic is implemented in follow-on patches. For now fallback to TCP socket is always used. Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Reviewed-by: Utz Bacher <utz.bacher@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>