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Merge branch 'switchdev-callback'
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Vivien Didelot says:

====================
net: switchdev: use specific switchdev_obj_*

This patchset changes switchdev add, del, dump operations from this:

    int     (*switchdev_port_obj_add)(struct net_device *dev,
                                      struct switchdev_obj *obj,
                                      struct switchdev_trans *trans);
    int     (*switchdev_port_obj_del)(struct net_device *dev,
                                      struct switchdev_obj *obj);
    int     (*switchdev_port_obj_dump)(struct net_device *dev,
                                      struct switchdev_obj *obj);

to something similar to the notifier_call callback of a notifier_block:

    int     (*switchdev_port_obj_add)(struct net_device *dev,
                                      enum switchdev_obj_id id,
                                      const void *obj,
                                      struct switchdev_trans *trans);
    int     (*switchdev_port_obj_del)(struct net_device *dev,
                                      enum switchdev_obj_id id,
                                      const void *obj);
    int     (*switchdev_port_obj_dump)(struct net_device *dev,
                                       enum switchdev_obj_id id, void *obj,
                                       int (*cb)(void *obj));

This allows the caller to pass and expect back a specific switchdev_obj_*
structure (e.g. switchdev_obj_fdb) instead of the generic switchdev_obj one.

This will simplify pushing the callback function down to the drivers.

The first 3 patches get rid of the dev parameter of the dump callback, since it
is not always neeeded (e.g. vlan_dump) and some drivers (such as DSA drivers)
may not have easy access to it.

Patches 4 and 5 implement the change in the switchdev operations and its users.

Patch 6 extracts the inner switchdev_obj_* structures from switchdev_obj and
removes this last one.

v2: fix error spotted by kbuild (extra ';' inline switchdev_port_obj_dump).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
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@davem330
davem330 committed Sep 30, 2015
2 parents 79b0eb2 + 44bbcf5 commit eef50d4
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Showing 6 changed files with 186 additions and 201 deletions.
42 changes: 21 additions & 21 deletions drivers/net/ethernet/rocker/rocker.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -4437,26 +4437,25 @@ static int rocker_port_fdb_add(struct rocker_port *rocker_port,
}

static int rocker_port_obj_add(struct net_device *dev,
struct switchdev_obj *obj,
enum switchdev_obj_id id, const void *obj,
struct switchdev_trans *trans)
{
struct rocker_port *rocker_port = netdev_priv(dev);
const struct switchdev_obj_ipv4_fib *fib4;
int err = 0;

switch (obj->id) {
switch (id) {
case SWITCHDEV_OBJ_PORT_VLAN:
err = rocker_port_vlans_add(rocker_port, trans,
&obj->u.vlan);
err = rocker_port_vlans_add(rocker_port, trans, obj);
break;
case SWITCHDEV_OBJ_IPV4_FIB:
fib4 = &obj->u.ipv4_fib;
fib4 = obj;
err = rocker_port_fib_ipv4(rocker_port, trans,
htonl(fib4->dst), fib4->dst_len,
fib4->fi, fib4->tb_id, 0);
break;
case SWITCHDEV_OBJ_PORT_FDB:
err = rocker_port_fdb_add(rocker_port, trans, &obj->u.fdb);
err = rocker_port_fdb_add(rocker_port, trans, obj);
break;
default:
err = -EOPNOTSUPP;
Expand Down Expand Up @@ -4509,25 +4508,25 @@ static int rocker_port_fdb_del(struct rocker_port *rocker_port,
}

static int rocker_port_obj_del(struct net_device *dev,
struct switchdev_obj *obj)
enum switchdev_obj_id id, const void *obj)
{
struct rocker_port *rocker_port = netdev_priv(dev);
const struct switchdev_obj_ipv4_fib *fib4;
int err = 0;

switch (obj->id) {
switch (id) {
case SWITCHDEV_OBJ_PORT_VLAN:
err = rocker_port_vlans_del(rocker_port, &obj->u.vlan);
err = rocker_port_vlans_del(rocker_port, obj);
break;
case SWITCHDEV_OBJ_IPV4_FIB:
fib4 = &obj->u.ipv4_fib;
fib4 = obj;
err = rocker_port_fib_ipv4(rocker_port, NULL,
htonl(fib4->dst), fib4->dst_len,
fib4->fi, fib4->tb_id,
ROCKER_OP_FLAG_REMOVE);
break;
case SWITCHDEV_OBJ_PORT_FDB:
err = rocker_port_fdb_del(rocker_port, NULL, &obj->u.fdb);
err = rocker_port_fdb_del(rocker_port, NULL, obj);
break;
default:
err = -EOPNOTSUPP;
Expand All @@ -4538,10 +4537,10 @@ static int rocker_port_obj_del(struct net_device *dev,
}

static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
struct switchdev_obj *obj)
struct switchdev_obj_fdb *fdb,
int (*cb)(void *obj))
{
struct rocker *rocker = rocker_port->rocker;
struct switchdev_obj_fdb *fdb = &obj->u.fdb;
struct rocker_fdb_tbl_entry *found;
struct hlist_node *tmp;
unsigned long lock_flags;
Expand All @@ -4556,7 +4555,7 @@ static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
fdb->ndm_state = NUD_REACHABLE;
fdb->vid = rocker_port_vlan_to_vid(rocker_port,
found->key.vlan_id);
err = obj->cb(rocker_port->dev, obj);
err = cb(fdb);
if (err)
break;
}
Expand All @@ -4566,9 +4565,9 @@ static int rocker_port_fdb_dump(const struct rocker_port *rocker_port,
}

static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
struct switchdev_obj *obj)
struct switchdev_obj_vlan *vlan,
int (*cb)(void *obj))
{
struct switchdev_obj_vlan *vlan = &obj->u.vlan;
u16 vid;
int err = 0;

Expand All @@ -4579,7 +4578,7 @@ static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
if (rocker_vlan_id_is_internal(htons(vid)))
vlan->flags |= BRIDGE_VLAN_INFO_PVID;
vlan->vid_begin = vlan->vid_end = vid;
err = obj->cb(rocker_port->dev, obj);
err = cb(vlan);
if (err)
break;
}
Expand All @@ -4588,17 +4587,18 @@ static int rocker_port_vlan_dump(const struct rocker_port *rocker_port,
}

static int rocker_port_obj_dump(struct net_device *dev,
struct switchdev_obj *obj)
enum switchdev_obj_id id, void *obj,
int (*cb)(void *obj))
{
const struct rocker_port *rocker_port = netdev_priv(dev);
int err = 0;

switch (obj->id) {
switch (id) {
case SWITCHDEV_OBJ_PORT_FDB:
err = rocker_port_fdb_dump(rocker_port, obj);
err = rocker_port_fdb_dump(rocker_port, obj, cb);
break;
case SWITCHDEV_OBJ_PORT_VLAN:
err = rocker_port_vlan_dump(rocker_port, obj);
err = rocker_port_vlan_dump(rocker_port, obj, cb);
break;
default:
err = -EOPNOTSUPP;
Expand Down
80 changes: 44 additions & 36 deletions include/net/switchdev.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -64,30 +64,29 @@ enum switchdev_obj_id {
SWITCHDEV_OBJ_PORT_FDB,
};

struct switchdev_obj {
enum switchdev_obj_id id;
int (*cb)(struct net_device *dev, struct switchdev_obj *obj);
union {
struct switchdev_obj_vlan { /* PORT_VLAN */
u16 flags;
u16 vid_begin;
u16 vid_end;
} vlan;
struct switchdev_obj_ipv4_fib { /* IPV4_FIB */
u32 dst;
int dst_len;
struct fib_info *fi;
u8 tos;
u8 type;
u32 nlflags;
u32 tb_id;
} ipv4_fib;
struct switchdev_obj_fdb { /* PORT_FDB */
const unsigned char *addr;
u16 vid;
u16 ndm_state;
} fdb;
} u;
/* SWITCHDEV_OBJ_PORT_VLAN */
struct switchdev_obj_vlan {
u16 flags;
u16 vid_begin;
u16 vid_end;
};

/* SWITCHDEV_OBJ_IPV4_FIB */
struct switchdev_obj_ipv4_fib {
u32 dst;
int dst_len;
struct fib_info *fi;
u8 tos;
u8 type;
u32 nlflags;
u32 tb_id;
};

/* SWITCHDEV_OBJ_PORT_FDB */
struct switchdev_obj_fdb {
const unsigned char *addr;
u16 vid;
u16 ndm_state;
};

void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
Expand All @@ -102,11 +101,11 @@ void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
*
* @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
*
* @switchdev_port_obj_add: Add an object to port (see switchdev_obj).
* @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
*
* @switchdev_port_obj_del: Delete an object from port (see switchdev_obj).
* @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
*
* @switchdev_port_obj_dump: Dump port objects (see switchdev_obj).
* @switchdev_port_obj_dump: Dump port objects (see switchdev_obj_*).
*/
struct switchdev_ops {
int (*switchdev_port_attr_get)(struct net_device *dev,
Expand All @@ -115,12 +114,15 @@ struct switchdev_ops {
struct switchdev_attr *attr,
struct switchdev_trans *trans);
int (*switchdev_port_obj_add)(struct net_device *dev,
struct switchdev_obj *obj,
enum switchdev_obj_id id,
const void *obj,
struct switchdev_trans *trans);
int (*switchdev_port_obj_del)(struct net_device *dev,
struct switchdev_obj *obj);
enum switchdev_obj_id id,
const void *obj);
int (*switchdev_port_obj_dump)(struct net_device *dev,
struct switchdev_obj *obj);
enum switchdev_obj_id id, void *obj,
int (*cb)(void *obj));
};

enum switchdev_notifier_type {
Expand Down Expand Up @@ -150,9 +152,12 @@ int switchdev_port_attr_get(struct net_device *dev,
struct switchdev_attr *attr);
int switchdev_port_attr_set(struct net_device *dev,
struct switchdev_attr *attr);
int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj);
int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj);
int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj);
int switchdev_port_obj_add(struct net_device *dev, enum switchdev_obj_id id,
const void *obj);
int switchdev_port_obj_del(struct net_device *dev, enum switchdev_obj_id id,
const void *obj);
int switchdev_port_obj_dump(struct net_device *dev, enum switchdev_obj_id id,
void *obj, int (*cb)(void *obj));
int register_switchdev_notifier(struct notifier_block *nb);
int unregister_switchdev_notifier(struct notifier_block *nb);
int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
Expand Down Expand Up @@ -197,19 +202,22 @@ static inline int switchdev_port_attr_set(struct net_device *dev,
}

static inline int switchdev_port_obj_add(struct net_device *dev,
struct switchdev_obj *obj)
enum switchdev_obj_id id,
const void *obj)
{
return -EOPNOTSUPP;
}

static inline int switchdev_port_obj_del(struct net_device *dev,
struct switchdev_obj *obj)
enum switchdev_obj_id id,
const void *obj)
{
return -EOPNOTSUPP;
}

static inline int switchdev_port_obj_dump(struct net_device *dev,
struct switchdev_obj *obj)
enum switchdev_obj_id id, void *obj,
int (*cb)(void *obj))
{
return -EOPNOTSUPP;
}
Expand Down
11 changes: 4 additions & 7 deletions net/bridge/br_fdb.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -133,15 +133,12 @@ static void fdb_del_hw_addr(struct net_bridge *br, const unsigned char *addr)

static void fdb_del_external_learn(struct net_bridge_fdb_entry *f)
{
struct switchdev_obj obj = {
.id = SWITCHDEV_OBJ_PORT_FDB,
.u.fdb = {
.addr = f->addr.addr,
.vid = f->vlan_id,
},
struct switchdev_obj_fdb fdb = {
.addr = f->addr.addr,
.vid = f->vlan_id,
};

switchdev_port_obj_del(f->dst->dev, &obj);
switchdev_port_obj_del(f->dst->dev, SWITCHDEV_OBJ_PORT_FDB, &fdb);
}

static void fdb_delete(struct net_bridge *br, struct net_bridge_fdb_entry *f)
Expand Down
24 changes: 9 additions & 15 deletions net/bridge/br_vlan.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -80,16 +80,13 @@ static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br,
if (ops->ndo_vlan_rx_add_vid) {
err = vlan_vid_add(dev, br->vlan_proto, vid);
} else {
struct switchdev_obj vlan_obj = {
.id = SWITCHDEV_OBJ_PORT_VLAN,
.u.vlan = {
.flags = flags,
.vid_begin = vid,
.vid_end = vid,
},
struct switchdev_obj_vlan v = {
.flags = flags,
.vid_begin = vid,
.vid_end = vid,
};

err = switchdev_port_obj_add(dev, &vlan_obj);
err = switchdev_port_obj_add(dev, SWITCHDEV_OBJ_PORT_VLAN, &v);
if (err == -EOPNOTSUPP)
err = 0;
}
Expand Down Expand Up @@ -132,15 +129,12 @@ static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
if (ops->ndo_vlan_rx_kill_vid) {
vlan_vid_del(dev, br->vlan_proto, vid);
} else {
struct switchdev_obj vlan_obj = {
.id = SWITCHDEV_OBJ_PORT_VLAN,
.u.vlan = {
.vid_begin = vid,
.vid_end = vid,
},
struct switchdev_obj_vlan v = {
.vid_begin = vid,
.vid_end = vid,
};

err = switchdev_port_obj_del(dev, &vlan_obj);
err = switchdev_port_obj_del(dev, SWITCHDEV_OBJ_PORT_VLAN, &v);
if (err == -EOPNOTSUPP)
err = 0;
}
Expand Down
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