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author | 2015-06-22 00:27:17 -0700 | |
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committer | 2015-06-23 06:56:18 -0700 | |
commit | 7d4f8d871ab15bd50a5771382ca2c9355b38d73c (patch) | |
tree | dc2b70efc634d14085fc8e2abe0050e7039dc7f7 /net/switchdev | |
parent | switchdev: rename vlan vid_start to vid_begin (diff) | |
download | linux-7d4f8d871ab15bd50a5771382ca2c9355b38d73c.tar.gz linux-7d4f8d871ab15bd50a5771382ca2c9355b38d73c.tar.bz2 linux-7d4f8d871ab15bd50a5771382ca2c9355b38d73c.zip |
switchdev; add VLAN support for port's bridge_getlink
One more missing piece of the puzzle. Add vlan dump support to switchdev
port's bridge_getlink. iproute2 "bridge vlan show" cmd already knows how
to show the vlans installed on the bridge and the device , but (until now)
no one implemented the port vlan part of the netlink PF_BRIDGE:RTM_GETLINK
msg. Before this patch, "bridge vlan show":
$ bridge -c vlan show
port vlan ids
sw1p1 30-34 << bridge side vlans
57
sw1p1 << device side vlans (missing)
sw1p2 57
sw1p2
sw1p3
sw1p4
br0 None
(When the port is bridged, the output repeats the vlan list for the vlans
on the bridge side of the port and the vlans on the device side of the
port. The listing above show no vlans for the device side even though they
are installed).
After this patch:
$ bridge -c vlan show
port vlan ids
sw1p1 30-34 << bridge side vlan
57
sw1p1 30-34 << device side vlans
57
3840 PVID
sw1p2 57
sw1p2 57
3840 PVID
sw1p3 3842 PVID
sw1p4 3843 PVID
br0 None
I re-used ndo_dflt_bridge_getlink to add vlan fill call-back func.
switchdev support adds an obj dump for VLAN objects, using the same
call-back scheme as FDB dump. Support included for both compressed and
un-compressed vlan dumps.
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/switchdev')
-rw-r--r-- | net/switchdev/switchdev.c | 123 |
1 files changed, 122 insertions, 1 deletions
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c index 448d9199cea2..3e4b35a0c8cb 100644 --- a/net/switchdev/switchdev.c +++ b/net/switchdev/switchdev.c @@ -391,6 +391,126 @@ int call_switchdev_notifiers(unsigned long val, struct net_device *dev, } EXPORT_SYMBOL_GPL(call_switchdev_notifiers); +struct switchdev_vlan_dump { + struct switchdev_obj obj; + struct sk_buff *skb; + u32 filter_mask; + u16 flags; + u16 begin; + u16 end; +}; + +static int switchdev_port_vlan_dump_put(struct net_device *dev, + struct switchdev_vlan_dump *dump) +{ + struct bridge_vlan_info vinfo; + + vinfo.flags = dump->flags; + + if (dump->begin == 0 && dump->end == 0) { + return 0; + } else if (dump->begin == dump->end) { + vinfo.vid = dump->begin; + if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, + sizeof(vinfo), &vinfo)) + return -EMSGSIZE; + } else { + vinfo.vid = dump->begin; + vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN; + if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, + sizeof(vinfo), &vinfo)) + return -EMSGSIZE; + vinfo.vid = dump->end; + vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN; + vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_END; + if (nla_put(dump->skb, IFLA_BRIDGE_VLAN_INFO, + sizeof(vinfo), &vinfo)) + return -EMSGSIZE; + } + + return 0; +} + +static int switchdev_port_vlan_dump_cb(struct net_device *dev, + struct switchdev_obj *obj) +{ + struct switchdev_vlan_dump *dump = + container_of(obj, struct switchdev_vlan_dump, obj); + struct switchdev_obj_vlan *vlan = &dump->obj.u.vlan; + int err = 0; + + if (vlan->vid_begin > vlan->vid_end) + return -EINVAL; + + if (dump->filter_mask & RTEXT_FILTER_BRVLAN) { + dump->flags = vlan->flags; + for (dump->begin = dump->end = vlan->vid_begin; + dump->begin <= vlan->vid_end; + dump->begin++, dump->end++) { + err = switchdev_port_vlan_dump_put(dev, dump); + if (err) + return err; + } + } else if (dump->filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) { + if (dump->begin > vlan->vid_begin && + dump->begin >= vlan->vid_end) { + if ((dump->begin - 1) == vlan->vid_end && + dump->flags == vlan->flags) { + /* prepend */ + dump->begin = vlan->vid_begin; + } else { + err = switchdev_port_vlan_dump_put(dev, dump); + dump->flags = vlan->flags; + dump->begin = vlan->vid_begin; + dump->end = vlan->vid_end; + } + } else if (dump->end <= vlan->vid_begin && + dump->end < vlan->vid_end) { + if ((dump->end + 1) == vlan->vid_begin && + dump->flags == vlan->flags) { + /* append */ + dump->end = vlan->vid_end; + } else { + err = switchdev_port_vlan_dump_put(dev, dump); + dump->flags = vlan->flags; + dump->begin = vlan->vid_begin; + dump->end = vlan->vid_end; + } + } else { + err = -EINVAL; + } + } + + return err; +} + +static int switchdev_port_vlan_fill(struct sk_buff *skb, struct net_device *dev, + u32 filter_mask) +{ + struct switchdev_vlan_dump dump = { + .obj = { + .id = SWITCHDEV_OBJ_PORT_VLAN, + .cb = switchdev_port_vlan_dump_cb, + }, + .skb = skb, + .filter_mask = filter_mask, + }; + int err = 0; + + if ((filter_mask & RTEXT_FILTER_BRVLAN) || + (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) { + err = switchdev_port_obj_dump(dev, &dump.obj); + if (err) + goto err_out; + if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) + /* last one */ + err = switchdev_port_vlan_dump_put(dev, &dump); + } + +err_out: + return err == -EOPNOTSUPP ? 0 : err; +} + /** * switchdev_port_bridge_getlink - Get bridge port attributes * @@ -415,7 +535,8 @@ int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, return err; return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode, - attr.u.brport_flags, mask, nlflags); + attr.u.brport_flags, mask, nlflags, + filter_mask, switchdev_port_vlan_fill); } EXPORT_SYMBOL_GPL(switchdev_port_bridge_getlink); |