net/hsr: Support iproute print_opt ('ip -details ...')

This implements the rtnl_link_ops fill_info routine for HSR.

Signed-off-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 31 insertions, 1 deletions

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index b78566f59aba..6db460121f84 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -488,7 +488,9 @@ enum {
         IFLA_HSR_UNSPEC,
         IFLA_HSR_SLAVE1,
         IFLA_HSR_SLAVE2,
-        IFLA_HSR_MULTICAST_SPEC,
+        IFLA_HSR_MULTICAST_SPEC,        /* Last byte of supervision addr */
+        IFLA_HSR_SUPERVISION_ADDR,      /* Supervision frame multicast addr */
+        IFLA_HSR_SEQ_NR,
         __IFLA_HSR_MAX,
 };
 
diff --git a/net/hsr/hsr_netlink.c b/net/hsr/hsr_netlink.c
index 5325af85eea6..01a5261ac7a5 100644
--- a/net/hsr/hsr_netlink.c
+++ b/net/hsr/hsr_netlink.c
@@ -23,6 +23,8 @@ static const struct nla_policy hsr_policy[IFLA_HSR_MAX + 1] = {
         [IFLA_HSR_SLAVE1]               = { .type = NLA_U32 },
         [IFLA_HSR_SLAVE2]               = { .type = NLA_U32 },
         [IFLA_HSR_MULTICAST_SPEC]       = { .type = NLA_U8 },
+        [IFLA_HSR_SUPERVISION_ADDR]     = { .type = NLA_BINARY, .len = ETH_ALEN },
+        [IFLA_HSR_SEQ_NR]               = { .type = NLA_U16 },
 };
 
 
@@ -59,6 +61,31 @@ static int hsr_newlink(struct net *src_net, struct net_device *dev,
         return hsr_dev_finalize(dev, link, multicast_spec);
 }
 
+static int hsr_fill_info(struct sk_buff *skb, const struct net_device *dev)
+{
+        struct hsr_priv *hsr_priv;
+
+        hsr_priv = netdev_priv(dev);
+
+        if (hsr_priv->slave[0])
+                if (nla_put_u32(skb, IFLA_HSR_SLAVE1, hsr_priv->slave[0]->ifindex))
+                        goto nla_put_failure;
+
+        if (hsr_priv->slave[1])
+                if (nla_put_u32(skb, IFLA_HSR_SLAVE2, hsr_priv->slave[1]->ifindex))
+                        goto nla_put_failure;
+
+        if (nla_put(skb, IFLA_HSR_SUPERVISION_ADDR, ETH_ALEN,
+                    hsr_priv->sup_multicast_addr) ||
+            nla_put_u16(skb, IFLA_HSR_SEQ_NR, hsr_priv->sequence_nr))
+                goto nla_put_failure;
+
+        return 0;
+
+nla_put_failure:
+        return -EMSGSIZE;
+}
+
 static struct rtnl_link_ops hsr_link_ops __read_mostly = {
         .kind           = "hsr",
         .maxtype        = IFLA_HSR_MAX,
@@ -66,6 +93,7 @@ static struct rtnl_link_ops hsr_link_ops __read_mostly = {
         .priv_size      = sizeof(struct hsr_priv),
         .setup          = hsr_dev_setup,
         .newlink        = hsr_newlink,
+        .fill_info      = hsr_fill_info,
 };