net: dsa: Add basic framework to support ndo_fdb functions
Provide callbacks for ndo_fdb_add, ndo_fdb_del, and ndo_fdb_dump.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 39555f3..3597724 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -201,6 +201,105 @@
return 0;
}
+static int dsa_slave_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
+ struct net_device *dev,
+ const unsigned char *addr, u16 vid, u16 nlm_flags)
+{
+ struct dsa_slave_priv *p = netdev_priv(dev);
+ struct dsa_switch *ds = p->parent;
+ int ret = -EOPNOTSUPP;
+
+ if (ds->drv->fdb_add)
+ ret = ds->drv->fdb_add(ds, p->port, addr, vid);
+
+ return ret;
+}
+
+static int dsa_slave_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
+ struct net_device *dev,
+ const unsigned char *addr, u16 vid)
+{
+ struct dsa_slave_priv *p = netdev_priv(dev);
+ struct dsa_switch *ds = p->parent;
+ int ret = -EOPNOTSUPP;
+
+ if (ds->drv->fdb_del)
+ ret = ds->drv->fdb_del(ds, p->port, addr, vid);
+
+ return ret;
+}
+
+static int dsa_slave_fill_info(struct net_device *dev, struct sk_buff *skb,
+ const unsigned char *addr, u16 vid,
+ bool is_static,
+ u32 portid, u32 seq, int type,
+ unsigned int flags)
+{
+ struct nlmsghdr *nlh;
+ struct ndmsg *ndm;
+
+ nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
+ if (!nlh)
+ return -EMSGSIZE;
+
+ ndm = nlmsg_data(nlh);
+ ndm->ndm_family = AF_BRIDGE;
+ ndm->ndm_pad1 = 0;
+ ndm->ndm_pad2 = 0;
+ ndm->ndm_flags = NTF_EXT_LEARNED;
+ ndm->ndm_type = 0;
+ ndm->ndm_ifindex = dev->ifindex;
+ ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
+
+ if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
+ goto nla_put_failure;
+
+ if (vid && nla_put_u16(skb, NDA_VLAN, vid))
+ goto nla_put_failure;
+
+ nlmsg_end(skb, nlh);
+ return 0;
+
+nla_put_failure:
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
+}
+
+/* Dump information about entries, in response to GETNEIGH */
+static int dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
+ struct net_device *dev,
+ struct net_device *filter_dev, int idx)
+{
+ struct dsa_slave_priv *p = netdev_priv(dev);
+ struct dsa_switch *ds = p->parent;
+ unsigned char addr[ETH_ALEN] = { 0 };
+ int ret;
+
+ if (!ds->drv->fdb_getnext)
+ return -EOPNOTSUPP;
+
+ for (; ; idx++) {
+ bool is_static;
+
+ ret = ds->drv->fdb_getnext(ds, p->port, addr, &is_static);
+ if (ret < 0)
+ break;
+
+ if (idx < cb->args[0])
+ continue;
+
+ ret = dsa_slave_fill_info(dev, skb, addr, 0,
+ is_static,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ RTM_NEWNEIGH, NLM_F_MULTI);
+ if (ret < 0)
+ break;
+ }
+
+ return idx;
+}
+
static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct dsa_slave_priv *p = netdev_priv(dev);
@@ -572,6 +671,9 @@
.ndo_change_rx_flags = dsa_slave_change_rx_flags,
.ndo_set_rx_mode = dsa_slave_set_rx_mode,
.ndo_set_mac_address = dsa_slave_set_mac_address,
+ .ndo_fdb_add = dsa_slave_fdb_add,
+ .ndo_fdb_del = dsa_slave_fdb_del,
+ .ndo_fdb_dump = dsa_slave_fdb_dump,
.ndo_do_ioctl = dsa_slave_ioctl,
};