rocker: add new rocker switch device

Rocker is a simulated ethernet switch device.  The device supports up to 62
front-panel ports and supports L2 switching and L3 routing functions, as well
as L2/L3/L4 ACLs.  The device presents a single PCI device for each switch,
with a memory-mapped register space for device driver access.

Rocker device is invoked with -device, for example a 4-port switch:

  -device rocker,name=sw1,len-ports=4,ports[0]=dev0,ports[1]=dev1, \
         ports[2]=dev2,ports[3]=dev3

Each port is a netdev and can be paired with using -netdev id=<port name>.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David Ahern <dsahern@gmail.com>
Message-id: 1426306173-24884-7-git-send-email-sfeldma@gmail.com

rocker: fix clang compiler errors

Consolidate all forward typedef declarations to rocker.h.

Signed-off-by: David Ahern <dsahern@gmail.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>

rocker: add support for flow modification

We had support for flow add/del.  This adds support for flow mod.  I needed
this for L3 support where an existing route is modified using NLM_F_REPLACE.
For example:

  ip route add 12.0.0.0/30 nexthop via 11.0.0.1 dev swp1
  ip route change 12.0.0.0/30 nexthop via 11.0.0.9 dev swp2

The first cmd adds the route.  The second cmd changes the existing route by
changing its nexthop info.

In the device, a mod operation results in the matching flow enty being modified
with the new settings.  This is atomic to the device.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/hw/net/rocker/rocker_fp.h b/hw/net/rocker/rocker_fp.h
new file mode 100644
index 0000000000..a5f28f120d
--- /dev/null
+++ b/hw/net/rocker/rocker_fp.h
@@ -0,0 +1,51 @@
+/*
+ * QEMU rocker switch emulation - front-panel ports
+ *
+ * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _ROCKER_FP_H_
+#define _ROCKER_FP_H_
+
+#include "net/net.h"
+#include "qemu/iov.h"
+
+#define ROCKER_FP_PORTS_MAX 62
+
+typedef struct fp_port FpPort;
+
+int fp_port_eg(FpPort *port, const struct iovec *iov, int iovcnt);
+
+bool fp_port_get_link_up(FpPort *port);
+void fp_port_get_macaddr(FpPort *port, MACAddr *macaddr);
+void fp_port_set_macaddr(FpPort *port, MACAddr *macaddr);
+uint8_t fp_port_get_learning(FpPort *port);
+void fp_port_set_learning(FpPort *port, uint8_t learning);
+int fp_port_get_settings(FpPort *port, uint32_t *speed,
+                         uint8_t *duplex, uint8_t *autoneg);
+int fp_port_set_settings(FpPort *port, uint32_t speed,
+                         uint8_t duplex, uint8_t autoneg);
+bool fp_port_from_pport(uint32_t pport, uint32_t *port);
+World *fp_port_get_world(FpPort *port);
+void fp_port_set_world(FpPort *port, World *world);
+bool fp_port_enabled(FpPort *port);
+void fp_port_enable(FpPort *port);
+void fp_port_disable(FpPort *port);
+
+FpPort *fp_port_alloc(Rocker *r, char *sw_name,
+                      MACAddr *start_mac, unsigned int index,
+                      NICPeers *peers);
+void fp_port_free(FpPort *port);
+void fp_port_reset(FpPort *port);
+
+#endif /* _ROCKER_FP_H_ */