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net/smc: check for pending termination 

Avoid to run the processing in smc_lgr_terminate() more than once,
remember when the link group termination is triggered.

Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Karsten Graul 2018-05-15 17:05:03 +02:00 committed by David S. Miller
parent 8f332a743c
commit 517c300e8f
3 changed files with 7 additions and 3 deletions
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2
net/smc/smc_clc.c
View File

@ -316,7 +316,7 @@ int smc_clc_wait_msg(struct smc_sock *smc, void *buf, int buflen,
if (clcm->type == SMC_CLC_DECLINE) {
reason_code = SMC_CLC_DECL_REPLY;
if (((struct smc_clc_msg_decline *)buf)->hdr.flag) {
smc->conn.lgr->sync_err = true;
smc->conn.lgr->sync_err = 1;
smc_lgr_terminate(smc->conn.lgr);
}
}

5
net/smc/smc_core.c
View File

@ -172,7 +172,7 @@ static int smc_lgr_create(struct smc_sock *smc,
goto out;
}
lgr->role = smc->listen_smc ? SMC_SERV : SMC_CLNT;
lgr->sync_err = false;
lgr->sync_err = 0;
memcpy(lgr->peer_systemid, peer_systemid, SMC_SYSTEMID_LEN);
lgr->vlan_id = vlan_id;
rwlock_init(&lgr->sndbufs_lock);
@ -352,6 +352,9 @@ void smc_lgr_terminate(struct smc_link_group *lgr)
struct smc_sock *smc;
struct rb_node *node;
if (lgr->terminating)
return; /* lgr already terminating */
lgr->terminating = 1;
smc_lgr_forget(lgr);
smc_llc_link_inactive(&lgr->lnk[SMC_SINGLE_LINK]);

3
net/smc/smc_core.h
View File

@ -166,7 +166,8 @@ struct smc_link_group {
u8 id[SMC_LGR_ID_SIZE]; /* unique lgr id */
struct delayed_work free_work; /* delayed freeing of an lgr */
bool sync_err; /* lgr no longer fits to peer */
u8 sync_err : 1; /* lgr no longer fits to peer */
u8 terminating : 1;/* lgr is terminating */
};
/* Find the connection associated with the given alert token in the link group.