#undef TRACE_SYSTEM
#define TRACE_SYSTEM intel-sst

/*
 * The TRACE_SYSTEM_VAR defaults to TRACE_SYSTEM, but must be a
 * legitimate C variable. It is not exported to user space.
 */
#undef TRACE_SYSTEM_VAR
#define TRACE_SYSTEM_VAR intel_sst

#if !defined(_TRACE_INTEL_SST_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_INTEL_SST_H

#include <linux/types.h>
#include <linux/ktime.h>
#include <linux/tracepoint.h>

DECLARE_EVENT_CLASS(sst_ipc_msg,

	TP_PROTO(unsigned int val),

	TP_ARGS(val),

	TP_STRUCT__entry(
		__field(	unsigned int,	val		)
	),

	TP_fast_assign(
		__entry->val = val;
	),

	TP_printk("0x%8.8x", (unsigned int)__entry->val)
);

DEFINE_EVENT(sst_ipc_msg, sst_ipc_msg_tx,

	TP_PROTO(unsigned int val),

	TP_ARGS(val)

);

DEFINE_EVENT(sst_ipc_msg, sst_ipc_msg_rx,

	TP_PROTO(unsigned int val),

	TP_ARGS(val)

);

DECLARE_EVENT_CLASS(sst_ipc_mailbox,

	TP_PROTO(unsigned int offset, unsigned int val),

	TP_ARGS(offset, val),

	TP_STRUCT__entry(
		__field(	unsigned int,	offset		)
		__field(	unsigned int,	val		)
	),

	TP_fast_assign(
		__entry->offset = offset;
		__entry->val = val;
	),

	TP_printk(" 0x%4.4x = 0x%8.8x",
		(unsigned int)__entry->offset, (unsigned int)__entry->val)
);

DEFINE_EVENT(sst_ipc_mailbox, sst_ipc_inbox_rdata,

	TP_PROTO(unsigned int offset, unsigned int val),

	TP_ARGS(offset, val)

);

DEFINE_EVENT(sst_ipc_mailbox, sst_ipc_inbox_wdata,

	TP_PROTO(unsigned int offset, unsigned int val),

	TP_ARGS(offset, val)

);

DEFINE_EVENT(sst_ipc_mailbox, sst_ipc_outbox_rdata,

	TP_PROTO(unsigned int offset, unsigned int val),

	TP_ARGS(offset, val)

);

DEFINE_EVENT(sst_ipc_mailbox, sst_ipc_outbox_wdata,

	TP_PROTO(unsigned int offset, unsigned int val),

	TP_ARGS(offset, val)

);

DECLARE_EVENT_CLASS(sst_ipc_mailbox_info,

	TP_PROTO(unsigned int size),

	TP_ARGS(size),

	TP_STRUCT__entry(
		__field(	unsigned int,	size		)
	),

	TP_fast_assign(
		__entry->size = size;
	),

	TP_printk("Mailbox bytes 0x%8.8x", (unsigned int)__entry->size)
);

DEFINE_EVENT(sst_ipc_mailbox_info, sst_ipc_inbox_read,

	TP_PROTO(unsigned int size),

	TP_ARGS(size)

);

DEFINE_EVENT(sst_ipc_mailbox_info, sst_ipc_inbox_write,

	TP_PROTO(unsigned int size),

	TP_ARGS(size)

);

DEFINE_EVENT(sst_ipc_mailbox_info, sst_ipc_outbox_read,

	TP_PROTO(unsigned int size),

	TP_ARGS(size)

);

DEFINE_EVENT(sst_ipc_mailbox_info, sst_ipc_outbox_write,

	TP_PROTO(unsigned int size),

	TP_ARGS(size)

);

#endif /* _TRACE_SST_H */

/* This part must be outside protection */
#include <trace/define_trace.h>
''/>
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</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=3898fac1f488c76e0eef5b5267b4ba8112a82ac4&amp;showmsg=1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers?id=3898fac1f488c76e0eef5b5267b4ba8112a82ac4&amp;showmsg=1'>drivers</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/drivers?id=3898fac1f488c76e0eef5b5267b4ba8112a82ac4'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr class='logheader'><td><span title='2017-02-03 15:21:21 -0500'>2017-02-03</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=3ad7a4b141ebd6091494913672d7166d5c2764e4'>vxlan: support fdb and learning in COLLECT_METADATA mode</a></td><td>Roopa Prabhu</td><td>1</td><td><span class='deletions'>-71</span>/<span class='insertions'>+125</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Vxlan COLLECT_METADATA mode today solves the per-vni netdev
scalability problem in l3 networks. It expects all forwarding
information to be present in dst_metadata. This patch series
enhances collect metadata mode to include the case where only
vni is present in dst_metadata, and the vxlan driver can then use
the rest of the forwarding information datbase to make forwarding
decisions. There is no change to default COLLECT_METADATA
behaviour. These changes only apply to COLLECT_METADATA when
used with the bridging use-case with a special dst_metadata
tunnel info flag (eg: where vxlan device is part of a bridge).
For all this to work, the vxlan driver will need to now support a
single fdb table hashed by mac + vni. This series essentially makes
this happen.

use-case and workflow:
vxlan collect metadata device participates in bridging vlan
to vn-segments. Bridge driver above the vxlan device,
sends the vni corresponding to the vlan in the dst_metadata.
vxlan driver will lookup forwarding database with (mac + vni)
for the required remote destination information to forward the
packet.

Changes introduced by this patch:
    - allow learning and forwarding database state in vxlan netdev in
      COLLECT_METADATA mode. Current behaviour is not changed
      by default. tunnel info flag IP_TUNNEL_INFO_BRIDGE is used
      to support the new bridge friendly mode.
    - A single fdb table hashed by (mac, vni) to allow fdb entries with
      multiple vnis in the same fdb table
    - rx path already has the vni
    - tx path expects a vni in the packet with dst_metadata
    - prior to this series, fdb remote_dsts carried remote vni and
      the vxlan device carrying the fdb table represented the
      source vni. With the vxlan device now representing multiple vnis,
      this patch adds a src vni attribute to the fdb entry. The remote
      vni already uses NDA_VNI attribute. This patch introduces
      NDA_SRC_VNI netlink attribute to represent the src vni in a multi
      vni fdb table.

iproute2 example (patched and pruned iproute2 output to just show
relevant fdb entries):
example shows same host mac learnt on two vni's.

before (netdev per vni):
$bridge fdb show | grep "00:02:00:00:00:03"
00:02:00:00:00:03 dev vxlan1001 dst 12.0.0.8 self
00:02:00:00:00:03 dev vxlan1000 dst 12.0.0.8 self

after this patch with collect metadata in bridged mode (single netdev):
$bridge fdb show | grep "00:02:00:00:00:03"
00:02:00:00:00:03 dev vxlan0 src_vni 1001 dst 12.0.0.8 self
00:02:00:00:00:03 dev vxlan0 src_vni 1000 dst 12.0.0.8 self

Signed-off-by: Roopa Prabhu &lt;roopa@cumulusnetworks.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>