From: Ursula Braun ubraun@linux.ibm.com
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 | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/net/smc/smc_clc.c +++ b/net/smc/smc_clc.c @@ -372,7 +372,9 @@ int smc_clc_send_decline(struct smc_sock 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));