diff options
Diffstat (limited to 'net/dsa/port.c')
| -rw-r--r-- | net/dsa/port.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/net/dsa/port.c b/net/dsa/port.c index bd78192e0e47..eef4a98f2628 100644 --- a/net/dsa/port.c +++ b/net/dsa/port.c @@ -781,9 +781,15 @@ int dsa_port_host_fdb_add(struct dsa_port *dp, const unsigned char *addr, struct dsa_port *cpu_dp = dp->cpu_dp; int err; - err = dev_uc_add(cpu_dp->master, addr); - if (err) - return err; + /* Avoid a call to __dev_set_promiscuity() on the master, which + * requires rtnl_lock(), since we can't guarantee that is held here, + * and we can't take it either. + */ + if (cpu_dp->master->priv_flags & IFF_UNICAST_FLT) { + err = dev_uc_add(cpu_dp->master, addr); + if (err) + return err; + } return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_ADD, &info); } @@ -800,9 +806,11 @@ int dsa_port_host_fdb_del(struct dsa_port *dp, const unsigned char *addr, struct dsa_port *cpu_dp = dp->cpu_dp; int err; - err = dev_uc_del(cpu_dp->master, addr); - if (err) - return err; + if (cpu_dp->master->priv_flags & IFF_UNICAST_FLT) { + err = dev_uc_del(cpu_dp->master, addr); + if (err) + return err; + } return dsa_port_notify(dp, DSA_NOTIFIER_HOST_FDB_DEL, &info); } |