linux-kernel - [PATCH net-next 0/6] net: dsa: push switchdev prepare phase in FDB ops

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Message-Id: <1444261711-1829-1-git-send-email-vivien.didelot@savoirfairelinux.com>
Date:	Wed,  7 Oct 2015 19:48:25 -0400
From:	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
To:	netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, kernel@...oirfairelinux.com,
	"David S. Miller" <davem@...emloft.net>,
	Scott Feldman <sfeldma@...il.com>,
	Jiri Pirko <jiri@...nulli.us>,
	Florian Fainelli <f.fainelli@...il.com>,
	Andrew Lunn <andrew@...n.ch>,
	Neil Armstrong <narmstrong@...libre.com>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Subject: [PATCH net-next 0/6] net: dsa: push switchdev prepare phase in FDB ops

This patchset pushes the switchdev prepare phase for the FDB add and del
operations down to the DSA drivers. Currently only mv88e6xxx is affected.

Since the dump requires a bit of refactoring in the driver, it'll come in a
future patchset.

The first 3 patches removes the dsa.h include from linux/netdevice.h, which
broke the inclusion of switchdev.h in dsa.h.

The last 3 patches add port_fdb_prepare and change port_fdb_add and
port_fdb_del to use the switchdev FDB object structure.

To be more specific about the include dependency issue, here's a snippet of
what happens currently if you include switchdev.h in dsa.h:

[...]
    include/net/switchdev.h:52:30: error: field ‘ppid’ has incomplete type
       struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
                                  ^
    include/net/switchdev.h:185:14: warning: ‘struct nlmsghdr’ declared inside parameter list [enabled by default]
           struct nlmsghdr *nlh, u16 flags);
                  ^
    include/net/switchdev.h:195:7: warning: ‘struct ndmsg’ declared inside parameter list [enabled by default]
    include/net/switchdev.h:198:7: warning: ‘struct nlattr’ declared inside parameter list [enabled by default]
           u16 vid);
           ^
    include/net/switchdev.h:201:15: warning: ‘struct netlink_callback’ declared inside parameter list [enabled by default]
            struct net_device *filter_dev, int idx);
                   ^
[...]

Removing the dsa.h include from linux/netdevice.h gets rid of these errors but
then the DSA code complains if you don't include it in dsa_priv.h:

[...]
net/dsa/slave.c: In function ‘dsa_slave_set_mac_address’:
net/dsa/slave.c:178:39: error: dereferencing pointer to incomplete type
  struct net_device *master = p->parent->dst->master_netdev;
                                       ^
In file included from include/linux/list.h:8:0,
                 from net/dsa/slave.c:11:
net/dsa/slave.c: In function ‘dsa_bridge_check_vlan_range’:
net/dsa/slave.c:209:26: error: ‘DSA_MAX_PORTS’ undeclared (first use in this function)
  DECLARE_BITMAP(members, DSA_MAX_PORTS);
                          ^
net/dsa/slave.c:209:26: note: each undeclared identifier is reported only once for each function it appears in
  DECLARE_BITMAP(members, DSA_MAX_PORTS);
                          ^
include/linux/kernel.h:67:30: note: in definition of macro ‘DIV_ROUND_UP’
 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
                              ^
include/linux/types.h:10:21: note: in expansion of macro ‘BITS_TO_LONGS’
  unsigned long name[BITS_TO_LONGS(bits)]
                     ^
net/dsa/slave.c:209:2: note: in expansion of macro ‘DECLARE_BITMAP’
  DECLARE_BITMAP(members, DSA_MAX_PORTS);
  ^
net/dsa/slave.c:1190:7: error: ‘DSA_TAG_PROTO_EDSA’ undeclared (first use in this function)
  case DSA_TAG_PROTO_EDSA:
       ^
net/dsa/slave.c: In function ‘dsa_slave_get_iflink’:
net/dsa/slave.c:64:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
[...]


Thanks,
-v

Vivien Didelot (6):
  net: dsa: add uses_hw_tag
  net: dsa: include dsa.h in dsa_priv.h
  net: remove dsa.h include from linux/netdevice.h
  net: dsa: add port_fdb_prepare
  net: dsa: push prepare phase in port_fdb_add
  net: dsa: use switchdev obj in port_fdb_del

 drivers/net/dsa/mv88e6171.c |  1 +
 drivers/net/dsa/mv88e6352.c |  1 +
 drivers/net/dsa/mv88e6xxx.c | 23 +++++++++++++++++------
 drivers/net/dsa/mv88e6xxx.h |  8 ++++++--
 include/linux/netdevice.h   |  9 ++++++---
 include/net/dsa.h           | 14 +++++++-------
 net/dsa/dsa.c               |  1 +
 net/dsa/dsa_priv.h          |  1 +
 net/dsa/slave.c             | 11 +++++++----
 9 files changed, 47 insertions(+), 22 deletions(-)

-- 
2.6.0

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