Commit Graph

227 Commits

Author SHA1 Message Date
Patrick McHardy f646968f8f net: vlan: rename NETIF_F_HW_VLAN_* feature flags to NETIF_F_HW_VLAN_CTAG_*
Rename the hardware VLAN acceleration features to include "CTAG" to indicate
that they only support CTAGs. Follow up patches will introduce 802.1ad
server provider tagging (STAGs) and require the distinction for hardware not
supporting acclerating both.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-19 14:45:26 -04:00
Pravin B Shelar e0f0ecf33c openvswitch: Use generic struct pcpu_tstats.
Rather than defining ovs specific stats struct (vport_percpu_stats),
we can use existing pcpu_tstats to achieve exactly same functionality.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-04-15 14:56:25 -07:00
Pravin B Shelar 8e4e1713e4 openvswitch: Simplify datapath locking.
Currently OVS uses combination of genl and rtnl lock to protect
datapath state.  This was done due to networking stack locking.
But this has complicated locking and there are few lock ordering
issues with new tunneling protocols.
Following patch simplifies locking by introducing new ovs mutex
and now this lock is used to protect entire ovs state.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-04-15 14:38:40 -07:00
Andy Zhou b4f9e8cdc8 openvswitch: datapath.h: Fix a stale comment.
Signed-off-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-04-10 14:57:48 -07:00
Thomas Graf 5d9633523f openvswitch: Don't insert empty OVS_VPORT_ATTR_OPTIONS attribute
The port specific options are currently unused resulting in an
empty OVS_VPORT_ATTR_OPTIONS nested attribute being inserted
into every OVS_VPORT_CMD_GET message.

Don't insert OVS_VPORT_ATTR_OPTIONS if no options are present.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-04-02 16:31:58 -07:00
Thomas Graf ed66118585 openvswitch: Move common genl notify code into ovs_notify()
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-03-29 17:54:09 -07:00
Thomas Graf c3ff8cfe3e openvswitch: Refine Netlink message size calculation and kill FLOW_BUFSIZE
Kills the FLOW_BUFSIZE constant which needs to be calculated manually
and replaces it with key_attr_size() based on nla_total_size().
Calculates the size of datapath messages instead of relying on
NLMSG_DEFAULT_SIZE and moves the existing message size calculations
into own functions for clarity.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-03-29 17:53:57 -07:00
Thomas Graf 32686a9d29 openvswitch: Use nla_memcpy() to memcpy() data from attributes
Less error prone as it takes into account the length of both the
destination buffer and the source attribute and documents when
data is copied from an attribute.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-03-29 17:53:46 -07:00
Thomas Graf dded45fc17 openvswitch: Specify the minimal length of OVS_PACKET_ATTR_PACKET in the policy
Specifying the minimal length in the policy makes it reuseable
and documents the interface.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-03-29 17:53:18 -07:00
Simon Horman e5c5d22e8d net: add ETH_P_802_3_MIN
Add a new constant ETH_P_802_3_MIN, the minimum ethernet type for
an 802.3 frame. Frames with a lower value in the ethernet type field
are Ethernet II.

Also update all the users of this value that David Miller and
I could find to use the new constant.

Also correct a bug in util.c. The comparison with ETH_P_802_3_MIN
should be >= not >.

As suggested by Jesse Gross.

Compile tested only.

Cc: David Miller <davem@davemloft.net>
Cc: Jesse Gross <jesse@nicira.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Bart De Schuymer <bart.de.schuymer@pandora.be>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: linux-bluetooth@vger.kernel.org
Cc: netfilter-devel@vger.kernel.org
Cc: bridge@lists.linux-foundation.org
Cc: linux-wireless@vger.kernel.org
Cc: linux1394-devel@lists.sourceforge.net
Cc: linux-media@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: dev@openvswitch.org
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-28 01:20:42 -04:00
Hong Zhiguo d3e1101c9b openvswitch: correct an invalid BUG_ON
table->count is uint32_t

Signed-off-by: Hong Zhiguo <honkiko@gmail.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-03-27 09:07:41 -07:00
Jesse Gross a9341512c3 openvswitch: Preallocate reply skb in ovs_vport_cmd_set().
Allocation of the Netlink notification skb can potentially fail
after changing vport configuration.  In general, we try to avoid
this by undoing any change we made but that is difficult for existing
objects.  This avoids the problem by preallocating the buffer (which
is fixed size).

Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-03-27 09:07:40 -07:00
David S. Miller 61816596d1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull in the 'net' tree to get Daniel Borkmann's flow dissector
infrastructure change.

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-20 12:46:26 -04:00
David S. Miller 86feff3f3e Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch
Conflicts:
	net/openvswitch/vport-internal_dev.c

Jesse Gross says:

====================
A couple of minor enhancements for net-next/3.10.  The largest is an
extension to allow variable length metadata to be passed to userspace
with packets.

There is a merge conflict in net/openvswitch/vport-internal_dev.c:
A existing commit modifies internal_dev_mac_addr() and a new commit
deletes it.  The new one is correct, so you can just remove that function.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-17 12:58:47 -04:00
David S. Miller 296b60109e Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch
Jesse Gross says:

====================
A few different bug fixes, including several for issues with userspace
communication that have gone unnoticed up until now.  These are intended
for net/3.9.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-15 09:00:39 -04:00
Sasha Levin b67bfe0d42 hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived

        list_for_each_entry(pos, head, member)

The hlist ones were greedy and wanted an extra parameter:

        hlist_for_each_entry(tpos, pos, head, member)

Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.

Besides the semantic patch, there was some manual work required:

 - Fix up the actual hlist iterators in linux/list.h
 - Fix up the declaration of other iterators based on the hlist ones.
 - A very small amount of places were using the 'node' parameter, this
 was modified to use 'obj->member' instead.
 - Coccinelle didn't handle the hlist_for_each_entry_safe iterator
 properly, so those had to be fixed up manually.

The semantic patch which is mostly the work of Peter Senna Tschudin is here:

@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;

type T;
expression a,c,d,e;
identifier b;
statement S;
@@

-T b;
    <+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
    ...+>

[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:24 -08:00
Cong Wang d176ca2a48 openvswitch: remove some useless comments
These comments are useless in upstream kernel.

Cc: David S. Miller <davem@davemloft.net>
Cc: Jesse Gross <jesse@nicira.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-02-22 17:02:49 -08:00
Cong Wang 7b024082b2 openvswitch: fix the calculation of checksum for vlan header
In vlan_insert_tag(), we insert a 4-byte VLAN header _after_
mac header:

        memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN);
        ...
        veth->h_vlan_proto = htons(ETH_P_8021Q);
        ...
        veth->h_vlan_TCI = htons(vlan_tci);

so after it, we should recompute the checksum to include these 4 bytes.
skb->data still points to the mac header, therefore VLAN header is at
(2 * ETH_ALEN = 12) bytes after it, not (ETH_HLEN = 14) bytes.

This can also be observed via tcpdump:

         0x0000:  ffff ffff ffff 5254 005d 6f6e 8100 000a
         0x0010:  0806 0001 0800 0604 0001 5254 005d 6f6e
         0x0020:  c0a8 026e 0000 0000 0000 c0a8 0282

Similar for __pop_vlan_tci(), the vlan header we remove is the one
overwritten in:

	memmove(skb->data + VLAN_HLEN, skb->data, 2 * ETH_ALEN);

Therefore the VLAN_HLEN = 4 bytes after 2 * ETH_ALEN is the part
we want to sub from checksum.

Cc: David S. Miller <davem@davemloft.net>
Cc: Jesse Gross <jesse@nicira.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-02-22 17:02:38 -08:00
Rich Lane 17b682a048 openvswitch: Fix parsing invalid LLC/SNAP ethertypes
Before this patch, if an LLC/SNAP packet with OUI 00:00:00 had an
ethertype less than 1536 the flow key given to userspace in the upcall
would contain the invalid ethertype (for example, 3). If userspace
attempted to insert a kernel flow for this key it would be rejected
by ovs_flow_from_nlattrs.

This patch allows OVS to pass the OFTest pktact.DirectBadLlcPackets.

Signed-off-by: Rich Lane <rlane@bigswitch.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-02-22 17:02:28 -08:00
Rich Lane a15ff76c95 openvswitch: Call genlmsg_end in queue_userspace_packet
Without genlmsg_end the upcall message ends (according to nlmsg_len)
after the struct ovs_header.

Signed-off-by: Rich Lane <rlane@bigswitch.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-02-22 17:02:11 -08:00
Rich Lane cb7c5bdffb openvswitch: Fix ovs_vport_cmd_new return value on success
If the pointer does not represent an error then the PTR_ERR
macro may still return a nonzero value.

Signed-off-by: Rich Lane <rlane@bigswitch.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-02-22 17:01:57 -08:00
Rich Lane 734907e82d openvswitch: Fix ovs_vport_cmd_del return value on success
If the pointer does not represent an error then the PTR_ERR macro may still
return a nonzero value. The fix is the same as in ovs_vport_cmd_set.

Signed-off-by: Rich Lane <rlane@bigswitch.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-02-22 17:01:49 -08:00
Ben Pfaff 4490108b4a openvswitch: Allow OVS_USERSPACE_ATTR_USERDATA to be variable length.
Until now, the optional OVS_USERSPACE_ATTR_USERDATA attribute had to be
exactly 64 bits long, if it was present.  However, 64 bits is not enough
space to associate as much information with a flow as would be convenient
for some userspace features now under development.  This commit generalizes
the attribute, allowing it to be any length.

This generalization is backward-compatible: if userspace only uses 64-bit
attributes, then it will not see any change in behavior.

CC: Romain Lenglet <rlenglet@vmware.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-02-22 16:29:22 -08:00
David S. Miller fd5023111c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Synchronize with 'net' in order to sort out some l2tp, wireless, and
ipv6 GRE fixes that will be built on top of in 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08 18:02:14 -05:00
Cong Wang 12b0004d1d net: adjust skb_gso_segment() for calling in rx path
skb_gso_segment() is almost always called in tx path,
except for openvswitch. It calls this function when
it receives the packet and tries to queue it to user-space.
In this special case, the ->ip_summed check inside
skb_gso_segment() is no longer true, as ->ip_summed value
has different meanings on rx path.

This patch adjusts skb_gso_segment() so that we can at least
avoid such warnings on checksum.

Cc: Jesse Gross <jesse@nicira.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-06 15:58:00 -05:00
Jesse Gross d9d59089c4 openvswitch: Move LRO check from transmit to receive.
The check for LRO packets was incorrectly put in the transmit path
instead of on receive.  Since this check is supposed to protect OVS
(and other parts of the system) from packets that it cannot handle
it is obviously not useful on egress.  Therefore, this commit moves
it back to the receive side.

The primary problem that this caused is upcalls to userspace tried
to segment the packet even though no segmentation information is
available.  This would later cause NULL pointer dereferences when
skb_gso_segment() did nothing.

Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-01-21 23:57:26 -08:00
YOSHIFUJI Hideaki / 吉藤英明 3523b29bd2 openvswitch: Use FIELD_SIZEOF() in dp_init().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-09 23:38:24 -08:00
Jarno Rajahalme 14408dba84 openvswitch: Change ENOENT return value to ENODEV in lookup_vport().
This reduces the number of valid "no such device" error values that
need special attention by the caller.

Userspace code will need to keep on checking for both ENODEV and
ENOENT as long as older kernel modules are around.

Signed-off-by: Jarno Rajahalme <jarno.rajahalme@nsn.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-01-09 14:27:35 -08:00
Jiri Pirko 7826d43f2d ethtool: fix drvinfo strings set in drivers
Use strlcpy where possible to ensure the string is \0 terminated.
Use always sizeof(string) instead of 32, ETHTOOL_BUSINFO_LEN
and custom defines.
Use snprintf instead of sprint.
Remove unnecessary inits of ->fw_version
Remove unnecessary inits of drvinfo struct.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-06 21:06:31 -08:00
Jiri Pirko 15c6ff3bc0 net: remove unnecessary NET_ADDR_RANDOM "bitclean"
NET_ADDR_SET is set in dev_set_mac_address() no need to alter
dev->addr_assign_type value in drivers.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-03 22:37:36 -08:00
Thomas Graf 03599c9411 openvswitch: Avoid useless holes in struct vport
Having the 16bit port_no in between a set of pointers creates
an unwanted and useless hole in the struct.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-12-04 09:28:03 -08:00
Thomas Graf 9151991c02 openvswitch: Use eth_mac_addr() instead of duplicating it
bonus: if we ever are to use IFF_LIVE_ADDR_CHANGE for
anything further than to check availability in eth_mac_addr(),
Open vSwitch will be ready for that.

Signed-off-by: Thomas Graf <tgraf@redhat.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-12-04 09:27:49 -08:00
Jesse Gross 92eb1d4771 openvswitch: Use RCU callback when detaching netdevices.
Currently, each time a device is detached from an OVS datapath
we call synchronize RCU before freeing associated data structures.
However, if a bridge is deleted (which detaches all ports) when
many devices are connected then there can be a long delay.  This
switches to use call_rcu() to group the cost together.

Reported-by: Justin Pettit <jpettit@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-11-28 14:04:34 -08:00
Ansis Atteka 39c7caebc9 openvswitch: add skb mark matching and set action
This patch adds support for skb mark matching and set action.

Signed-off-by: Ansis Atteka <aatteka@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-11-26 11:33:18 -08:00
Shan Wei 404f2f1019 net: openvswitch: use this_cpu_ptr per-cpu helper
just use more faster this_cpu_ptr instead of per_cpu_ptr(p, smp_processor_id());

Signed-off-by: Shan Wei <davidshan@tencent.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-11-16 13:26:20 -08:00
Ansis Atteka 3fdbd1ce11 openvswitch: add ipv6 'set' action
This patch adds ipv6 set action functionality. It allows to change
traffic class, flow label, hop-limit, ipv6 source and destination
address fields.

Signed-off-by: Ansis Atteka <aatteka@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-11-13 15:57:33 -08:00
Mehak Mahajan c061853381 openvswitch: Process RARP packets with ethertype 0x8035 similar to ARP packets.
With this commit, OVS will match the data in the RARP packets having
ethertype 0x8035, in the same way as the data in the ARP packets.

Signed-off-by: Mehak Mahajan <mmahajan@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-11-02 14:14:31 -07:00
Mehak Mahajan d04d382980 openvswitch: Store flow key len if ARP opcode is not request or reply.
We currently only extract the ARP payload if the opcode indicates
that it is a request or reply.  However, we also only set the
key length in these situations even though it should still be
possible to match on the opcode.  There's no real reason to
restrict the ARP opcode since all have the same format so this
simply removes the check.

Signed-off-by: Mehak Mahajan <mmahajan@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-10-30 17:17:09 -07:00
Jesse Gross c1c92b6a5b openvswitch: Print device when warning about over MTU packets.
If an attempt is made to transmit a packet that is over the device's
MTU then we log it using the datapath's name.  However, it is much
more helpful to use the device name instead.

Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-10-30 15:48:48 -07:00
Peter Senna Tschudin a2bf91b5b8 net/openvswitch/vport.c: Remove unecessary semicolon
Found by http://coccinelle.lip6.fr/

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-18 16:08:19 -04:00
David S. Miller b48b63a1f6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	net/netfilter/nfnetlink_log.c
	net/netfilter/xt_LOG.c

Rather easy conflict resolution, the 'net' tree had bug fixes to make
sure we checked if a socket is a time-wait one or not and elide the
logging code if so.

Whereas on the 'net-next' side we are calculating the UID and GID from
the creds using different interfaces due to the user namespace changes
from Eric Biederman.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-15 11:43:53 -04:00
Eric W. Biederman 15e473046c netlink: Rename pid to portid to avoid confusion
It is a frequent mistake to confuse the netlink port identifier with a
process identifier.  Try to reduce this confusion by renaming fields
that hold port identifiers portid instead of pid.

I have carefully avoided changing the structures exported to
userspace to avoid changing the userspace API.

I have successfully built an allyesconfig kernel with this change.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-10 15:30:41 -04:00
David S. Miller cefd81cfec Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch 2012-09-04 15:22:28 -04:00
Pravin B Shelar 15eac2a742 openvswitch: Increase maximum number of datapath ports.
Use hash table to store ports of datapath. Allow 64K ports per switch.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-09-03 19:20:49 -07:00
Jesse Gross c303aa94cd openvswitch: Fix FLOW_BUFSIZE definition.
The vlan encapsulation fields in the maximum flow defintion were
never updated when the representation changed before upstreaming.
In theory this could cause a kernel panic when a maximum length
flow is used.  In practice this has never happened (to my knowledge)
because skb allocations are padded out to a cache line so you would
need the right combination of flow and packet being sent to userspace.

Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-09-03 19:06:27 -07:00
Joe Stringer 39855b5ba9 openvswitch: Fix typo
Signed-off-by: Joe Stringer <joe@wand.net.nz>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-09-02 12:18:25 -07:00
Wei Yongjun 80f0fd8a7f openvswitch: using kfree_rcu() to simplify the code
The callback function of call_rcu() just calls a kfree(), so we
can use kfree_rcu() instead of call_rcu() + callback function.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-31 15:55:38 -04:00
Pravin B Shelar 46df7b8145 openvswitch: Add support for network namespaces.
Following patch adds support for network namespace to openvswitch.
Since it must release devices when namespaces are destroyed, a
side effect of this patch is that the module no longer keeps a
refcount but instead cleans up any state when it is unloaded.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-08-22 14:48:55 -07:00
Jesse Gross 4185392da4 openvswitch: Relax set header validation.
When installing a flow with an action to set a particular field we
need to validate that the packets that are part of the flow actually
contain that header.  With IP we use zeroed addresses and with TCP/UDP
the check is for zeroed ports.  This check is overly broad and can catch
packets like DHCP requests that have a zero source address in a
legitimate header.  This changes the check to look for a zeroed protocol
number for IP or for both ports be zero for TCP/UDP before considering
the header to not exist.

Reported-by: Ethan Jackson <ethan@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-08-06 15:49:47 -07:00
Jesse Gross 6081030769 Revert "openvswitch: potential NULL deref in sample()"
This reverts commit 5b3e7e6cb5.

The problem that the original commit was attempting to fix can
never happen in practice because validation is done one a per-flow
basis rather than a per-packet basis.  Adding additional checks at
runtime is unnecessary and inconsistent with the rest of the code.

CC: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-27 13:45:51 -07:00
Dan Carpenter 5b3e7e6cb5 openvswitch: potential NULL deref in sample()
If there is no OVS_SAMPLE_ATTR_ACTIONS set then "acts_list" is NULL and
it leads to a NULL dereference when we call nla_len(acts_list).  This
is a static checker fix, not something I have seen in testing.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-23 00:59:54 -07:00
David S. Miller c073cfc89f Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch
Jesse Gross says:

====================
A few bug fixes and small enhancements for net-next/3.6.
 ...
Ansis Atteka (1):
      openvswitch: Do not send notification if ovs_vport_set_options() failed

Ben Pfaff (1):
      openvswitch: Check gso_type for correct sk_buff in queue_gso_packets().

Jesse Gross (2):
      openvswitch: Enable retrieval of TCP flags from IPv6 traffic.
      openvswitch: Reset upper layer protocol info on internal devices.

Leo Alterman (1):
      openvswitch: Fix typo in documentation.

Pravin B Shelar (1):
      openvswitch: Check currect return value from skb_gso_segment()

Raju Subramanian (1):
      openvswitch: Replace Nicira Networks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-20 16:16:34 -07:00
Ben Pfaff a1b5d0dd28 openvswitch: Check gso_type for correct sk_buff in queue_gso_packets().
At the point where it was used, skb_shinfo(skb)->gso_type referred to a
post-GSO sk_buff.  Thus, it would always be 0.  We want to know the pre-GSO
gso_type, so we need to obtain it before segmenting.

Before this change, the kernel would pass inconsistent data to userspace:
packets for UDP fragments with nonzero offset would be passed along with
flow keys that indicate a zero offset (that is, the flow key for "later"
fragments claimed to be "first" fragments).  This inconsistency tended
to confuse Open vSwitch userspace, causing it to log messages about
"failed to flow_del" the flows with "later" fragments.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-07-20 14:47:54 -07:00
Pravin B Shelar 92e5dfc34c openvswitch: Check currect return value from skb_gso_segment()
Fix return check typo.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-07-20 14:46:29 -07:00
Jesse Gross 7fe99e2d43 openvswitch: Reset upper layer protocol info on internal devices.
It's possible that packets that are sent on internal devices (from
the OVS perspective) have already traversed the local IP stack.
After they go through the internal device, they will again travel
through the IP stack which may get confused by the presence of
existing information in the skb. The problem can be observed
when switching between namespaces. This clears out that information
to avoid problems but deliberately leaves other metadata alone.
This is to provide maximum flexibility in chaining together OVS
and other Linux components.

Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-05-25 11:29:30 -07:00
David S. Miller 028940342a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-05-16 22:17:37 -04:00
Joe Perches e87cc4728f net: Convert net_ratelimit uses to net_<level>_ratelimited
Standardize the net core ratelimited logging functions.

Coalesce formats, align arguments.
Change a printk then vprintk sequence to use printf extension %pV.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-15 13:45:03 -04:00
Dan Carpenter 8aa51d64c1 openvswitch: checking wrong variable in queue_userspace_packet()
"skb" is non-NULL here, for example we dereference it in skb_clone().
The intent was to test "nskb" which was just set.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-13 15:47:34 -04:00
Pravin B Shelar 072ae6314a openvswitch: Validation of IPv6 set port action uses IPv4 header
When the kernel validates set TCP/UDP port actions, it looks at
the ports in the existing flow to make sure that the L4 header exists.
However, these actions always use the IPv4 version of the struct.
Following patch fixes this by checking for flow ip protocol first.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-05-07 17:23:10 -07:00
Raju Subramanian caf2ee14bb openvswitch: Replace Nicira Networks.
Replaced all instances of Nicira Networks(, Inc) to Nicira, Inc.

Signed-off-by: Raju Subramanian <rsubramanian@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-05-03 18:55:23 -07:00
Ansis Atteka 4cb6e116bb openvswitch: Release rtnl_lock if ovs_vport_cmd_build_info() failed.
This patch fixes a possible lock-up bug where rtnl_lock might not
get released.

Signed-off-by: Ansis Atteka <aatteka@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-05-03 18:40:38 -07:00
Eric Dumazet 95c9617472 net: cleanup unsigned to unsigned int
Use of "unsigned int" is preferred to bare "unsigned" in net tree.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-15 12:44:40 -04:00
David S. Miller 06eb4eafbd Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-04-10 14:30:45 -04:00
Ansis Atteka 03fbf8b387 openvswitch: Do not send notification if ovs_vport_set_options() failed
There is no need to send a notification if ovs_vport_set_options() failed
and ovs_vport_cmd_set() did not change anything.

Signed-off-by: Ansis Atteka <aatteka@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-04-09 12:18:08 -07:00
Jesse Gross c55177e3e1 openvswitch: Enable retrieval of TCP flags from IPv6 traffic.
We currently check that a packet is IPv4 and TCP before fetching the
TCP flags.  This enables fetching from IPv6 packets as well.

Reported-by: Michael Mao <mmao@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-04-02 15:13:36 -07:00
Jesse Gross bf32fecdc1 openvswitch: Add length check when retrieving TCP flags.
When collecting TCP flags we check that the IP header indicates that
a TCP header is present but not that the packet is actually long
enough to contain the header.  This adds a check to prevent reading
off the end of the packet.

In practice, this is only likely to result in reading of bad data and
not a crash due to the presence of struct skb_shared_info at the end
of the packet.

Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-04-02 14:28:57 -07:00
David S. Miller 028d6a6767 openvswitch: Stop using NLA_PUT*().
These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-01 18:11:37 -04:00
David Howells 9ffc93f203 Remove all #inclusions of asm/system.h
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it.  Performed with the following command:

perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`

Signed-off-by: David Howells <dhowells@redhat.com>
2012-03-28 18:30:03 +01:00
David S. Miller b2d3298e09 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-03-09 14:34:20 -08:00
Jesse Gross 81e5d41d7e openvswitch: Fix checksum update for actions on UDP packets.
When modifying IP addresses or ports on a UDP packet we don't
correctly follow the rules for unchecksummed packets.  This meant
that packets without a checksum can be given a incorrect new checksum
and packets with a checksum can become marked as being unchecksummed.
This fixes it to handle those requirements.

Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-03-07 14:36:57 -08:00
Ben Pfaff 651a68ea2c openvswitch: Honor dp_ifindex, when specified, for vport lookup by name.
When OVS_VPORT_ATTR_NAME is specified and dp_ifindex is nonzero, the
logical behavior would be for the vport name lookup scope to be limited
to the specified datapath, but in fact the dp_ifindex value was ignored.
This commit causes the search scope to be honored.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
2012-03-06 15:04:04 -08:00
Danny Kukawka 7ce5d22219 net: use eth_hw_addr_random() and reset addr_assign_type
Use eth_hw_addr_random() instead of calling random_ether_addr()
to set addr_assign_type correctly to NET_ADDR_RANDOM.

Reset the state to NET_ADDR_PERM as soon as the MAC get
changed via .ndo_set_mac_address.

v2: adapt to renamed eth_hw_addr_random()

Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-15 15:34:17 -05:00
Ben Pfaff 77676fdbd5 openvswitch: Fix multipart datapath dumps.
The logic to split up the list of datapaths into multiple Netlink messages
was simply wrong, causing the list to be terminated after the first part.
Only about the first 50 datapaths would be dumped.  This fixes the
problem.

Reported-by: Paul Ingram <paul@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-17 23:56:19 -05:00
Shan Wei 2b2d465631 net: kill duplicate included header
For net part, remove duplicate included header.

Signed-off-by: Shan Wei <davidshan@tencent.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-17 10:31:12 -05:00
Devendra Naga 8d9d399f14 net: remove version.h includes in net/openvswitch/
remove version.h includes in net/openswitch/ as reported by make versioncheck.

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-17 10:07:58 -05:00
Dan Carpenter f0a98ae8db openvswitch: small potential memory leak in ovs_vport_alloc()
We're unlikely to hit this leak, but the static checkers complain if we
don't take care of it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06 12:58:57 -05:00
Jesse Gross ccb1352e76 net: Add Open vSwitch kernel components.
Open vSwitch is a multilayer Ethernet switch targeted at virtualized
environments.  In addition to supporting a variety of features
expected in a traditional hardware switch, it enables fine-grained
programmatic extension and flow-based control of the network.
This control is useful in a wide variety of applications but is
particularly important in multi-server virtualization deployments,
which are often characterized by highly dynamic endpoints and the need
to maintain logical abstractions for multiple tenants.

The Open vSwitch datapath provides an in-kernel fast path for packet
forwarding.  It is complemented by a userspace daemon, ovs-vswitchd,
which is able to accept configuration from a variety of sources and
translate it into packet processing rules.

See http://openvswitch.org for more information and userspace
utilities.

Signed-off-by: Jesse Gross <jesse@nicira.com>
2011-12-03 09:35:17 -08:00