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net/smc: no peer ID in CLC decline for SMCD
author
Ursula Braun
<ubraun@linux.ibm.com>
Fri, 14 Feb 2020 07:59:00 +0000
(08:59 +0100)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Thu, 5 Mar 2020 15:43:47 +0000
(16:43 +0100)
commit
369537c97024dca99303a8d4d6ab38b4f54d3909
upstream.
Just SMCR requires a CLC Peer ID, but not SMCD. The field should be
zero for SMCD.
Fixes:
c758dfddc1b5
("net/smc: add SMC-D support in CLC messages")
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/smc/smc_clc.c
patch
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diff --git
a/net/smc/smc_clc.c
b/net/smc/smc_clc.c
index
49bcebf
..
aee9ccf
100644
(file)
--- a/
net/smc/smc_clc.c
+++ b/
net/smc/smc_clc.c
@@
-372,7
+372,9
@@
int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info)
dclc.hdr.length = htons(sizeof(struct smc_clc_msg_decline));
dclc.hdr.version = SMC_CLC_V1;
dclc.hdr.flag = (peer_diag_info == SMC_CLC_DECL_SYNCERR) ? 1 : 0;
- memcpy(dclc.id_for_peer, local_systemid, sizeof(local_systemid));
+ if (smc->conn.lgr && !smc->conn.lgr->is_smcd)
+ memcpy(dclc.id_for_peer, local_systemid,
+ sizeof(local_systemid));
dclc.peer_diagnosis = htonl(peer_diag_info);
memcpy(dclc.trl.eyecatcher, SMC_EYECATCHER, sizeof(SMC_EYECATCHER));