bridge/nl: remove wrong use of NLM_F_MULTI

NLM_F_MULTI must be used only when a NLMSG_DONE message is sent. In fact,
it is sent only at the end of a dump.

Libraries like libnl will wait forever for NLMSG_DONE.

Fixes: e5a55a898720 ("net: create generic bridge ops")
Fixes: 815cccbf10b2 ("ixgbe: add setlink, getlink support to ixgbe and ixgbevf")
CC: John Fastabend <john.r.fastabend@intel.com>
CC: Sathya Perla <sathya.perla@emulex.com>
CC: Subbu Seetharaman <subbu.seetharaman@emulex.com>
CC: Ajit Khaparde <ajit.khaparde@emulex.com>
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
CC: intel-wired-lan@lists.osuosl.org
CC: Jiri Pirko <jiri@resnulli.us>
CC: Scott Feldman <sfeldma@gmail.com>
CC: Stephen Hemminger <stephen@networkplumber.org>
CC: bridge@lists.linux-foundation.org
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index fb0bc3c..a6dcbf8 100644 (file)
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -4846,7 +4846,8 @@ err:
 }
 
 static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
-                                struct net_device *dev, u32 filter_mask)
+                                struct net_device *dev, u32 filter_mask,
+                                int nlflags)
 {
        struct be_adapter *adapter = netdev_priv(dev);
        int status = 0;
@@ -4868,7 +4869,7 @@ static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
        return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
                                       hsw_mode == PORT_FWD_TYPE_VEPA ?
                                       BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB,
-                                      0, 0);
+                                      0, 0, nlflags);
 }
 
 #ifdef CONFIG_BE2NET_VXLAN

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 24481cd..a54c144 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -8053,10 +8053,10 @@ static int i40e_ndo_bridge_setlink(struct net_device *dev,
 #ifdef HAVE_BRIDGE_FILTER
 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
                                   struct net_device *dev,
-                                  u32 __always_unused filter_mask)
+                                  u32 __always_unused filter_mask, int nlflags)
 #else
 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
-                                  struct net_device *dev)
+                                  struct net_device *dev, int nlflags)
 #endif /* HAVE_BRIDGE_FILTER */
 {
        struct i40e_netdev_priv *np = netdev_priv(dev);
@@ -8078,7 +8078,8 @@ static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
        if (!veb)
                return 0;
 
-       return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode);
+       return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
+                                      nlflags);
 }
 #endif /* HAVE_BRIDGE_ATTRIBS */
 

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index d3f4b0c..5be12a0 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -8044,7 +8044,7 @@ static int ixgbe_ndo_bridge_setlink(struct net_device *dev,
 
 static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
                                    struct net_device *dev,
-                                   u32 filter_mask)
+                                   u32 filter_mask, int nlflags)
 {
        struct ixgbe_adapter *adapter = netdev_priv(dev);
 
@@ -8052,7 +8052,7 @@ static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
                return 0;
 
        return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
-                                      adapter->bridge_mode, 0, 0);
+                                      adapter->bridge_mode, 0, 0, nlflags);
 }
 
 static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev)

diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
index a570a60..ec25153 100644 (file)
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -4176,14 +4176,15 @@ static int rocker_port_bridge_setlink(struct net_device *dev,
 
 static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
                                      struct net_device *dev,
-                                     u32 filter_mask)
+                                     u32 filter_mask, int nlflags)
 {
        struct rocker_port *rocker_port = netdev_priv(dev);
        u16 mode = BRIDGE_MODE_UNDEF;
        u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
 
        return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
-                                      rocker_port->brport_flags, mask);
+                                      rocker_port->brport_flags, mask,
+                                      nlflags);
 }
 
 static int rocker_port_get_phys_port_name(struct net_device *dev,

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index dbad4d7..1899c74 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -977,7 +977,8 @@ typedef u16 (*select_queue_fallback_t)(struct net_device *dev,
  * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh,
  *                          u16 flags)
  * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq,
- *                          struct net_device *dev, u32 filter_mask)
+ *                          struct net_device *dev, u32 filter_mask,
+ *                          int nlflags)
  * int (*ndo_bridge_dellink)(struct net_device *dev, struct nlmsghdr *nlh,
  *                          u16 flags);
  *
@@ -1173,7 +1174,8 @@ struct net_device_ops {
        int                     (*ndo_bridge_getlink)(struct sk_buff *skb,
                                                      u32 pid, u32 seq,
                                                      struct net_device *dev,
-                                                     u32 filter_mask);
+                                                     u32 filter_mask,
+                                                     int nlflags);
        int                     (*ndo_bridge_dellink)(struct net_device *dev,
                                                      struct nlmsghdr *nlh,
                                                      u16 flags);

diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 2da5d10..7b8e260 100644 (file)
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -122,5 +122,5 @@ extern int ndo_dflt_fdb_del(struct ndmsg *ndm,
 
 extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
                                   struct net_device *dev, u16 mode,
-                                  u32 flags, u32 mask);
+                                  u32 flags, u32 mask, int nlflags);
 #endif /* __LINUX_RTNETLINK_H */

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 0e4ddb8..4b5c236 100644 (file)
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -394,7 +394,7 @@ errout:
  * Dump information about all ports, in response to GETLINK
  */
 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
-              struct net_device *dev, u32 filter_mask)
+              struct net_device *dev, u32 filter_mask, int nlflags)
 {
        struct net_bridge_port *port = br_port_get_rtnl(dev);
 
@@ -402,7 +402,7 @@ int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
            !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
                return 0;
 
-       return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, NLM_F_MULTI,
+       return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
                              filter_mask, dev);
 }
 

diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 6ca0251..3362c29 100644 (file)
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -828,7 +828,7 @@ void br_ifinfo_notify(int event, struct net_bridge_port *port);
 int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
 int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
 int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
-              u32 filter_mask);
+              u32 filter_mask, int nlflags);
 
 #ifdef CONFIG_SYSFS
 /* br_sysfs_if.c */

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 358d52a..666e092 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2854,7 +2854,7 @@ static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask,
 
 int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
                            struct net_device *dev, u16 mode,
-                           u32 flags, u32 mask)
+                           u32 flags, u32 mask, int nlflags)
 {
        struct nlmsghdr *nlh;
        struct ifinfomsg *ifm;
@@ -2863,7 +2863,7 @@ int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
        u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
        struct net_device *br_dev = netdev_master_upper_dev_get(dev);
 
-       nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), NLM_F_MULTI);
+       nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), nlflags);
        if (nlh == NULL)
                return -EMSGSIZE;
 
@@ -2969,7 +2969,8 @@ static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb)
                if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) {
                        if (idx >= cb->args[0] &&
                            br_dev->netdev_ops->ndo_bridge_getlink(
-                                   skb, portid, seq, dev, filter_mask) < 0)
+                                   skb, portid, seq, dev, filter_mask,
+                                   NLM_F_MULTI) < 0)
                                break;
                        idx++;
                }
@@ -2977,7 +2978,8 @@ static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb)
                if (ops->ndo_bridge_getlink) {
                        if (idx >= cb->args[0] &&
                            ops->ndo_bridge_getlink(skb, portid, seq, dev,
-                                                   filter_mask) < 0)
+                                                   filter_mask,
+                                                   NLM_F_MULTI) < 0)
                                break;
                        idx++;
                }
@@ -3018,7 +3020,7 @@ static int rtnl_bridge_notify(struct net_device *dev)
                goto errout;
        }
 
-       err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0);
+       err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0, 0);
        if (err < 0)
                goto errout;