1SMCSS(8) Linux Programmer's Manual SMCSS(8)
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7 smcss - print information about the AF_SMC sockets and link groups.
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11 smcss [--debug|-d] [--smcd|-D] [--wide|-W]
12 smcss {--all|-a} [--debug|-d] [--smcd|-D] [--wide|-W]
14 smcss [--debug|-d] [--smcr|-R] [--wide|-W]
16 smcss {--all|-a} [--debug|-d] [--smcr|-R] [--wide|-W]
18 smcss {--listening|-l} [--wide|-W]
20 smcss {--version|-v}
22 smcss {--help|-h}
24
27 smcss prints information about the Linux AF_SMC sockets and link
28 groups. The type of information printed is controlled by the first
29 argument, as follows:
30 (none)
32 displays a list of connecting, closing, or connected SMC sockets
33 with basic information.
34 -a, --all
37 displays all types of SMC sockets: listening, opening, closing,
38 and connected.
39 -l, --listening
42 shows listening sockets only. These are omitted by default.
43
46 -d, --debug
47 displays additional debug information, such as shutdown state.
48 -D, --smcd
51 displays additional SMC-D specific information. Shows SMC-D
52 sockets only.
53 -R, --smcr
56 displays additional SMC-R specific information. Shows SMC-R
57 sockets only.
58 -W, --wide
61 do not truncate IP addresses.
62
65 State
66 The state of the socket. The state can be one of these values:
67 INIT The SMC socket is being initialized. It is not connected nor
69 listening yet.
70 CLOSED The SMC socket is closed. It is not connected nor listening any‐
72 more.
73 LISTEN The SMC socket is a listening socket, waiting for incoming con‐
75 nection requests.
76 ACTIVE The SMC socket has an established connection. In this state,
78 the TCP connection is fully established, rendezvous processing
79 has been completed, and SMC peers can exchange data via RDMA.
80 PEERCLW1
82 No further data will be sent to the peer.
83 PEERCLW2
85 No further data will be sent to or received from the peer.
86 APPLCLW1
88 No further data will be received from the peer.
89 APPLCLW2
91 No further data will be received from or sent to the peer.
92 APPLFINCLW
94 The peer has closed the socket.
95 PEERFINCLW
97 The socket is closed locally.
98 PEERABORTW
100 The socket was abnormally closed locally.
101 PROCESSABORT
103 The peer has closed the socket abnormally.
104 UID
106 User ID of the SMC socket.
107 Inode
109 Inode attribute of the socket.
110 Local Address
112 Address and port number of the local end of the SMC socket. The dis‐
113 played address is truncated when it ends with '..'. -W, --wide can be
114 used to display addresses untruncated.
115 Peer Address
117 Address and port number of the remote end of the socket. Analogous to
118 "Local Address".
119 Intf
121 When the socket is explicitly bound with setsockopt option SO_BINDTODE‐
122 VICE then Intf shows the interface number of the Ethernet device to
123 which the socket is bound.
124 Mode
126 SMCD The SMC socket uses SMC-D for data exchange.
127 SMCR The SMC socket uses SMC-R for data exchange.
129 TCP The SMC socket uses the TCP protocol for data exchange, because
131 an SMC connection could not be established.
132 ShutD
134 <-> The SMC socket has not been shut down.
135 R-> The SMC socket is shut down one-way and cannot receive data.
137 <-W The SMC socket is shut down one-way and cannot send data.
139 R-W The SMC socket is shut down in both ways and cannot receive or
141 send data.
142 Token
144 Unique ID of the SMC socket connection.
145 Sndbuf
147 Size of the to-be-sent window of the SMC socket connection.
148 Rcvbuf
150 Size of the receiving window of the SMC socket connection (filled by
151 peer).
152 Peerbuf
154 Size of the peer receiving window of the SMC socket connection (to fill
155 during RDMA-transfer).
156 rxprod-Cursor
158 Describes the current cursor location of the "Rcvbuf" for data to be
159 received from the peer.
160 rxcons-Cursor
162 Describes the current cursor location of the "Peerbuf" for data sent to
163 peer and confirmed by the peer.
164 rxFlags
166 SMC socket connection flags set by and received from the peer.
167 txprod-Cursor
169 Describes the current cursor location of the "Peerbuf" for data sent to
170 peer.
171 txcons-Cursor
173 Describes the current cursor location of the "Rcvbuf" for data received
174 from the peer and confirmed to the peer.
175 txFlags
177 SMC socket connection flags set locally and sent to the peer.
178 txprep-Cursor
180 Describes the current cursor location of the "Sndbuf" for data to be
181 sent. The data is to be moved to the "Peerbuf".
182 txsent-Cursor
184 Describes the current cursor location of the "Sndbuf" for data sent.
185 The data was moved to the "Peerbuf".
186 txfin-Cursor
188 Describes the current cursor location of the "Sndbuf" for data sent and
189 send completion confirmed. The data was moved to the "Peerbuf" and
190 completion was confirmed.
191 Role
193 CLNT The link group of the SMC socket is used for client connections.
194 SERV The link group of the SMC socket is used for server connections.
196 IB-Device
198 Name of the RoCE device used by the link group to which the SMC socket
199 belongs.
200 Port
202 Port of the RoCE device used by the link group to which the SMC socket
203 belongs.
204 Linkid
206 Unique link ID of the link within the link group to which the SMC
207 socket belongs.
208 GID
210 Gid of the RoCE port used by the link group to which the SMC socket
211 belongs.
212 Peer-GID
214 Gid of the Foreign RoCE port used by the link group to which the SMC
215 socket belongs.
216 VLAN
218 tbd.
219
221 Successful smcss commands return 0 and display the requested socket
222 state table or link group information. If an error occurs, smcss
223 writes a message to stderr and completes with a return code other than
224 0.
225
227 af_smc(7), smc_rnics(8), smc_run(8), smc_pnet(8)
228smc-tools June 2018 SMCSS(8)