bonding: add tlb_dynamic_lb netlink support

tlb_dynamic_lb could be set only via sysfs, this patch allows it to be
set via netlink.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index 1bda292..db760e8 100644 (file)
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -111,6 +111,7 @@ static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
        [IFLA_BOND_AD_USER_PORT_KEY]    = { .type = NLA_U16 },
        [IFLA_BOND_AD_ACTOR_SYSTEM]     = { .type = NLA_BINARY,
                                            .len  = ETH_ALEN },
+       [IFLA_BOND_TLB_DYNAMIC_LB]      = { .type = NLA_U8 },
 };
 
 static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = {
@@ -405,7 +406,6 @@ static int bond_changelink(struct net_device *bond_dev,
                if (err)
                        return err;
        }
-
        if (data[IFLA_BOND_AD_USER_PORT_KEY]) {
                int port_key =
                        nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]);
@@ -415,7 +415,6 @@ static int bond_changelink(struct net_device *bond_dev,
                if (err)
                        return err;
        }
-
        if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) {
                if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN)
                        return -EINVAL;
@@ -426,6 +425,15 @@ static int bond_changelink(struct net_device *bond_dev,
                if (err)
                        return err;
        }
+       if (data[IFLA_BOND_TLB_DYNAMIC_LB]) {
+               int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]);
+
+               bond_opt_initval(&newval, dynamic_lb);
+               err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval);
+               if (err)
+                       return err;
+       }
+
        return 0;
 }
 
@@ -476,6 +484,7 @@ static size_t bond_get_size(const struct net_device *bond_dev)
                nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */
                nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */
                nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */
+               nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */
                0;
 }
 
@@ -598,6 +607,10 @@ static int bond_fill_info(struct sk_buff *skb,
                       bond->params.ad_select))
                goto nla_put_failure;
 
+       if (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB,
+                      bond->params.tlb_dynamic_lb))
+               goto nla_put_failure;
+
        if (BOND_MODE(bond) == BOND_MODE_8023AD) {
                struct ad_info info;
 

diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 24e22cd..ea04748 100644 (file)
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -434,6 +434,7 @@ enum {
        IFLA_BOND_AD_ACTOR_SYS_PRIO,
        IFLA_BOND_AD_USER_PORT_KEY,
        IFLA_BOND_AD_ACTOR_SYSTEM,
+       IFLA_BOND_TLB_DYNAMIC_LB,
        __IFLA_BOND_MAX,
 };