[PATCH net-next v4 0/2] propagate extack to vxlan_fdb_delete

[PATCH net-next v4 0/2] propagate extack to vxlan_fdb_delete

[Alaa Mohamed]

In order to propagate extack to vxlan_fdb_delete and vxlan_fdb_parse,
add extack to .ndo_fdb_del and edit all fdb del handelers

Alaa Mohamed (2):
  rtnetlink: add extack support in fdb del handlers
  net: vxlan: vxlan_core.c: Add extack support to vxlan_fdb_delete

 drivers/net/ethernet/intel/ice/ice_main.c     |  2 +-
 drivers/net/ethernet/mscc/ocelot_net.c        |  4 +-
 .../net/ethernet/qlogic/qlcnic/qlcnic_main.c  |  2 +-
 drivers/net/macvlan.c                         |  2 +-
 drivers/net/vxlan/vxlan_core.c                | 39 +++++++++++++------
 include/linux/netdevice.h                     |  2 +-
 net/bridge/br_fdb.c                           |  2 +-
 net/bridge/br_private.h                       |  3 +-
 net/core/rtnetlink.c                          |  4 +-
 9 files changed, 38 insertions(+), 22 deletions(-)

-- 
2.36.0

[PATCH net-next v4 1/2] rtnetlink: add extack support in fdb del handlers

[Alaa Mohamed]

Add extack support to .ndo_fdb_del in netdevice.h and
all related methods.

Signed-off-by: Alaa Mohamed <eng.alaamohamedsoliman.am@gmail.com>
---
changes in V3:
        fix errors reported by checkpatch.pl
---
changes in V4:
        fix errors reported by checkpatch.pl
---
 drivers/net/ethernet/intel/ice/ice_main.c        | 2 +-
 drivers/net/ethernet/mscc/ocelot_net.c           | 4 ++--
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c | 2 +-
 drivers/net/macvlan.c                            | 2 +-
 drivers/net/vxlan/vxlan_core.c                   | 2 +-
 include/linux/netdevice.h                        | 2 +-
 net/bridge/br_fdb.c                              | 2 +-
 net/bridge/br_private.h                          | 3 ++-
 net/core/rtnetlink.c                             | 4 ++--
 9 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index d768925785ca..4fd32163729e 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -5678,7 +5678,7 @@ ice_fdb_add(struct ndmsg *ndm, struct nlattr __always_unused *tb[],
 static int
 ice_fdb_del(struct ndmsg *ndm, __always_unused struct nlattr *tb[],
 	    struct net_device *dev, const unsigned char *addr,
-	    __always_unused u16 vid)
+	    __always_unused u16 vid, struct netlink_ext_ack *extack)
 {
 	int err;

diff --git a/drivers/net/ethernet/mscc/ocelot_net.c b/drivers/net/ethernet/mscc/ocelot_net.c
index 247bc105bdd2..e07c64e3159c 100644
--- a/drivers/net/ethernet/mscc/ocelot_net.c
+++ b/drivers/net/ethernet/mscc/ocelot_net.c
@@ -774,14 +774,14 @@ static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],

 static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 			       struct net_device *dev,
-			       const unsigned char *addr, u16 vid)
+			       const unsigned char *addr, u16 vid, struct netlink_ext_ack *extack)
 {
 	struct ocelot_port_private *priv = netdev_priv(dev);
 	struct ocelot_port *ocelot_port = &priv->port;
 	struct ocelot *ocelot = ocelot_port->ocelot;
 	int port = priv->chip_port;

-	return ocelot_fdb_del(ocelot, port, addr, vid, ocelot_port->bridge);
+	return ocelot_fdb_del(ocelot, port, addr, vid, ocelot_port->bridge, extack);
 }

 static int ocelot_port_fdb_dump(struct sk_buff *skb,
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index d320567b2cca..51fa23418f6a 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -368,7 +368,7 @@ static int qlcnic_set_mac(struct net_device *netdev, void *p)

 static int qlcnic_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 			struct net_device *netdev,
-			const unsigned char *addr, u16 vid)
+			const unsigned char *addr, u16 vid, struct netlink_ext_ack *extack)
 {
 	struct qlcnic_adapter *adapter = netdev_priv(netdev);
 	int err = -EOPNOTSUPP;
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 069e8824c264..ffd34d9f7049 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -1017,7 +1017,7 @@ static int macvlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],

 static int macvlan_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
 			   struct net_device *dev,
-			   const unsigned char *addr, u16 vid)
+			   const unsigned char *addr, u16 vid, struct netlink_ext_ack *extack)
 {
 	struct macvlan_dev *vlan = netdev_priv(dev);
 	int err = -EINVAL;
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
index de97ff98d36e..cf2f60037340 100644
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -1280,7 +1280,7 @@ int __vxlan_fdb_delete(struct vxlan_dev *vxlan,
 /* Delete entry (via netlink) */
 static int vxlan_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 			    struct net_device *dev,
-			    const unsigned char *addr, u16 vid)
+			    const unsigned char *addr, u16 vid, struct netlink_ext_ack *extack)
 {
 	struct vxlan_dev *vxlan = netdev_priv(dev);
 	union vxlan_addr ip;
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 28ea4f8269d4..d0d2a8f33c73 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1509,7 +1509,7 @@ struct net_device_ops {
 					       struct nlattr *tb[],
 					       struct net_device *dev,
 					       const unsigned char *addr,
-					       u16 vid);
+					       u16 vid, struct netlink_ext_ack *extack);
 	int			(*ndo_fdb_dump)(struct sk_buff *skb,
 						struct netlink_callback *cb,
 						struct net_device *dev,
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 6ccda68bd473..5bfce2e9a553 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -1110,7 +1110,7 @@ static int __br_fdb_delete(struct net_bridge *br,
 /* Remove neighbor entry with RTM_DELNEIGH */
 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 		  struct net_device *dev,
-		  const unsigned char *addr, u16 vid)
+		  const unsigned char *addr, u16 vid, struct netlink_ext_ack *extack)
 {
 	struct net_bridge_vlan_group *vg;
 	struct net_bridge_port *p = NULL;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 18ccc3d5d296..14ea6e73d786 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -780,7 +780,8 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
 		   const unsigned char *addr, u16 vid, unsigned long flags);

 int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
-		  struct net_device *dev, const unsigned char *addr, u16 vid);
+		  struct net_device *dev, const unsigned char *addr, u16 vid,
+		  struct netlink_ext_ack *extack);
 int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
 	       const unsigned char *addr, u16 vid, u16 nlh_flags,
 	       struct netlink_ext_ack *extack);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 4041b3e2e8ec..99b30ae58a47 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -4223,7 +4223,7 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
 		const struct net_device_ops *ops = br_dev->netdev_ops;

 		if (ops->ndo_fdb_del)
-			err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid);
+			err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid, extack);

 		if (err)
 			goto out;
@@ -4235,7 +4235,7 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
 	if (ndm->ndm_flags & NTF_SELF) {
 		if (dev->netdev_ops->ndo_fdb_del)
 			err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr,
-							   vid);
+							   vid, extack);
 		else
 			err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid);

--
2.36.0

[PATCH net-next v4 2/2] net: vxlan: vxlan_core.c: Add extack support to vxlan_fdb_delete

[Alaa Mohamed]

This patch adds extack msg support to vxlan_fdb_delete and vxlan_fdb_parse.
extack is used to propagate meaningful error msgs to the user of vxlan
fdb netlink api

Signed-off-by: Alaa Mohamed <eng.alaamohamedsoliman.am@gmail.com>
---
changes in V2:
	- fix spelling vxlan_fdb_delete
	- add missing braces
	- edit error message
---
changes in V3:
	fix errors reported by checkpatch.pl
---
changes in V4:
	- fix errors reported by checkpatch.pl
	- edit commit message.
---
 drivers/net/vxlan/vxlan_core.c | 37 ++++++++++++++++++++++++----------
 1 file changed, 26 insertions(+), 11 deletions(-)

diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
index cf2f60037340..ef69aeb058b8 100644
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -1129,19 +1129,24 @@ static void vxlan_fdb_dst_destroy(struct vxlan_dev *vxlan, struct vxlan_fdb *f,

 static int vxlan_fdb_parse(struct nlattr *tb[], struct vxlan_dev *vxlan,
 			   union vxlan_addr *ip, __be16 *port, __be32 *src_vni,
-			   __be32 *vni, u32 *ifindex, u32 *nhid)
+			   __be32 *vni, u32 *ifindex, u32 *nhid, struct netlink_ext_ack *extack)
 {
 	struct net *net = dev_net(vxlan->dev);
 	int err;

 	if (tb[NDA_NH_ID] && (tb[NDA_DST] || tb[NDA_VNI] || tb[NDA_IFINDEX] ||
-	    tb[NDA_PORT]))
-		return -EINVAL;
+	    tb[NDA_PORT])) {
+			NL_SET_ERR_MSG(extack,
+						   "DST, VNI, ifindex and port are mutually exclusive with NH_ID");
+			return -EINVAL;
+		}

 	if (tb[NDA_DST]) {
 		err = vxlan_nla_get_addr(ip, tb[NDA_DST]);
-		if (err)
+		if (err) {
+			NL_SET_ERR_MSG(extack, "Unsupported address family");
 			return err;
+		}
 	} else {
 		union vxlan_addr *remote = &vxlan->default_dst.remote_ip;

@@ -1157,24 +1162,30 @@ static int vxlan_fdb_parse(struct nlattr *tb[], struct vxlan_dev *vxlan,
 	}

 	if (tb[NDA_PORT]) {
-		if (nla_len(tb[NDA_PORT]) != sizeof(__be16))
+		if (nla_len(tb[NDA_PORT]) != sizeof(__be16)) {
+			NL_SET_ERR_MSG(extack, "Invalid vxlan port");
 			return -EINVAL;
+		}
 		*port = nla_get_be16(tb[NDA_PORT]);
 	} else {
 		*port = vxlan->cfg.dst_port;
 	}

 	if (tb[NDA_VNI]) {
-		if (nla_len(tb[NDA_VNI]) != sizeof(u32))
+		if (nla_len(tb[NDA_VNI]) != sizeof(u32)) {
+			NL_SET_ERR_MSG(extack, "Invalid vni");
 			return -EINVAL;
+		}
 		*vni = cpu_to_be32(nla_get_u32(tb[NDA_VNI]));
 	} else {
 		*vni = vxlan->default_dst.remote_vni;
 	}

 	if (tb[NDA_SRC_VNI]) {
-		if (nla_len(tb[NDA_SRC_VNI]) != sizeof(u32))
+		if (nla_len(tb[NDA_SRC_VNI]) != sizeof(u32)) {
+			NL_SET_ERR_MSG(extack, "Invalid src vni");
 			return -EINVAL;
+		}
 		*src_vni = cpu_to_be32(nla_get_u32(tb[NDA_SRC_VNI]));
 	} else {
 		*src_vni = vxlan->default_dst.remote_vni;
@@ -1183,12 +1194,16 @@ static int vxlan_fdb_parse(struct nlattr *tb[], struct vxlan_dev *vxlan,
 	if (tb[NDA_IFINDEX]) {
 		struct net_device *tdev;

-		if (nla_len(tb[NDA_IFINDEX]) != sizeof(u32))
+		if (nla_len(tb[NDA_IFINDEX]) != sizeof(u32)) {
+			NL_SET_ERR_MSG(extack, "Invalid ifindex");
 			return -EINVAL;
+		}
 		*ifindex = nla_get_u32(tb[NDA_IFINDEX]);
 		tdev = __dev_get_by_index(net, *ifindex);
-		if (!tdev)
+		if (!tdev) {
+			NL_SET_ERR_MSG(extack, "Device not found");
 			return -EADDRNOTAVAIL;
+		}
 	} else {
 		*ifindex = 0;
 	}
@@ -1226,7 +1241,7 @@ static int vxlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 		return -EINVAL;

 	err = vxlan_fdb_parse(tb, vxlan, &ip, &port, &src_vni, &vni, &ifindex,
-			      &nhid);
+			      &nhid, extack);
 	if (err)
 		return err;

@@ -1291,7 +1306,7 @@ static int vxlan_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
 	int err;

 	err = vxlan_fdb_parse(tb, vxlan, &ip, &port, &src_vni, &vni, &ifindex,
-			      &nhid);
+			      &nhid, extack);
 	if (err)
 		return err;

--
2.36.0

Re: [PATCH net-next v4 0/2] propagate extack to vxlan_fdb_delete

[Jakub Kicinski]

On Mon, 25 Apr 2022 16:25:05 +0200 Alaa Mohamed wrote:
> In order to propagate extack to vxlan_fdb_delete and vxlan_fdb_parse,
> add extack to .ndo_fdb_del and edit all fdb del handelers

Your patches do not apply cleanly to net-next/master. Please rebase and
repost. Please wait 24h between postings to allow additional feedback
to come in.

Re: [PATCH net-next v4 1/2] rtnetlink: add extack support in fdb del handlers

[kernel test robot]

Hi Alaa,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on horms-ipvs/master]
[also build test ERROR on net/master linus/master v5.18-rc4]
[cannot apply to net-next/master next-20220422]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Alaa-Mohamed/propagate-extack-to-vxlan_fdb_delete/20220425-222644
base:   https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs.git master
config: riscv-randconfig-r002-20220425 (https://download.01.org/0day-ci/archive/20220426/202204261831.S6mBmtgP-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcfdc3c683b393df1a5c9063252eb60e52818)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/5e9c3e146040a4e37b45ca18c3b42c3dfd6d0a0e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Alaa-Mohamed/propagate-extack-to-vxlan_fdb_delete/20220425-222644
        git checkout 5e9c3e146040a4e37b45ca18c3b42c3dfd6d0a0e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/net/ethernet/mscc/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/net/ethernet/mscc/ocelot_net.c:784:70: error: too many arguments to function call, expected 5, have 6
           return ocelot_fdb_del(ocelot, port, addr, vid, ocelot_port->bridge, extack);
                  ~~~~~~~~~~~~~~                                               ^~~~~~
   include/soc/mscc/ocelot.h:893:5: note: 'ocelot_fdb_del' declared here
   int ocelot_fdb_del(struct ocelot *ocelot, int port, const unsigned char *addr,
       ^
   1 error generated.


vim +784 drivers/net/ethernet/mscc/ocelot_net.c

   774	
   775	static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
   776				       struct net_device *dev,
   777				       const unsigned char *addr, u16 vid, struct netlink_ext_ack *extack)
   778	{
   779		struct ocelot_port_private *priv = netdev_priv(dev);
   780		struct ocelot_port *ocelot_port = &priv->port;
   781		struct ocelot *ocelot = ocelot_port->ocelot;
   782		int port = priv->chip_port;
   783	
 > 784		return ocelot_fdb_del(ocelot, port, addr, vid, ocelot_port->bridge, extack);
   785	}
   786	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp