diff options
| -rw-r--r-- | net/smc/af_smc.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index e874d0e6267f..670e802a73cb 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -599,6 +599,18 @@ static int smc_find_ism_device(struct smc_sock *smc, struct smc_init_info *ini) return 0; } +/* is chid unique for the ism devices that are already determined? */ +static bool smc_find_ism_v2_is_unique_chid(u16 chid, struct smc_init_info *ini, + int cnt) +{ + int i = (!ini->ism_dev[0]) ? 1 : 0; + + for (; i < cnt; i++) + if (ini->ism_chid[i] == chid) + return false; + return true; +} + /* determine possible V2 ISM devices (either without PNETID or with PNETID plus * PNETID matching net_device) */ @@ -608,6 +620,7 @@ static int smc_find_ism_v2_device_clnt(struct smc_sock *smc, int rc = SMC_CLC_DECL_NOSMCDDEV; struct smcd_dev *smcd; int i = 1; + u16 chid; if (smcd_indicated(ini->smc_type_v1)) rc = 0; /* already initialized for V1 */ @@ -615,10 +628,13 @@ static int smc_find_ism_v2_device_clnt(struct smc_sock *smc, list_for_each_entry(smcd, &smcd_dev_list.list, list) { if (smcd->going_away || smcd == ini->ism_dev[0]) continue; + chid = smc_ism_get_chid(smcd); + if (!smc_find_ism_v2_is_unique_chid(chid, ini, i)) + continue; if (!smc_pnet_is_pnetid_set(smcd->pnetid) || smc_pnet_is_ndev_pnetid(sock_net(&smc->sk), smcd->pnetid)) { ini->ism_dev[i] = smcd; - ini->ism_chid[i] = smc_ism_get_chid(ini->ism_dev[i]); + ini->ism_chid[i] = chid; ini->is_smcd = true; rc = 0; i++; |