kernel/git/stable/linux-stable.git/net/sunrpc/sysfs.c, branch linux-5.14.y

sunrpc: remove an offlined xprt using sysfs

2021-07-08T18:03:24+00:00

Once a transport has been put offline, this transport can be also removed from the list of transports. Any tasks that have been stuck on this transport would find the next available active transport and be re-tried. This transport would be removed from the xprt_switch list and freed. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

sunrpc: display xprt's queuelen of assigned tasks via sysfs

2021-07-08T18:03:24+00:00

Once a task grabs a trasnport it's reflected in the queuelen of the rpc_xprt structure. Add display of that value in the xprt's info file in sysfs. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

SUNRPC: take a xprt offline using sysfs

2021-07-08T18:03:24+00:00

Using sysfs's xprt_state attribute, mark a particular transport offline. It will not be picked during the round-robin selection. It's not allowed to take the main (1st created transport associated with the rpc_client) offline. Also bring a transport back online via sysfs by writing "online" and that would allow for this transport to be picked during the round- robin selection. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

SUNRPC for TCP display xprt's source port in sysfs xprt_info

2021-07-08T18:03:24+00:00

Using TCP connection's source port it is useful to match connections seen on the network traces to the xprts used by the linux nfs client. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

SUNRPC display xprt's main value in sysfs's xprt_info

2021-07-08T18:03:24+00:00

Display in sysfs in the information about the xprt if this is a main transport or not. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

sunrpc: provide showing transport's state info in the sysfs directory

2021-07-08T18:03:24+00:00

In preparation of being able to change the xprt's state, add a way to show currect state of the transport. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

sunrpc: provide multipath info in the sysfs directory

2021-07-08T18:03:24+00:00

Allow to query xrpt_switch attributes. Currently showing the following fields of the rpc_xprt_switch structure: xps_nxprts, xps_nactive, xps_queuelen. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

sunrpc: provide transport info in the sysfs directory

2021-07-08T18:03:24+00:00

Allow to query transport's attributes. Currently showing following fields of the rpc_xprt structure: state, last_used, cong, cwnd, max_reqs, min_reqs, num_reqs, sizes of queues binding, sending, pending, backlog. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

sunrpc: add dst_attr attributes to the sysfs xprt directory

2021-07-08T18:03:24+00:00

Allow to query and set the destination's address of a transport. Setting of the destination address is allowed only for TCP or RDMA based connections. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust

sunrpc: add add sysfs directory per xprt under each xprt_switch

2021-07-08T18:03:23+00:00

Add individual transport directories under each transport switch group. For instance, for each nconnect=X connections there will be a transport directory. Naming conventions also identifies transport type -- xprt-- where type is udp, tcp, rdma, local, bc. Signed-off-by: Olga Kornievskaia Signed-off-by: Trond Myklebust