/*
* 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.
*/
#include "qemu/osdep.h"
#include "qapi/qapi-types-rocker.h"
#include "rocker.h"
#include "rocker_hw.h"
#include "rocker_fp.h"
#include "rocker_world.h"
enum duplex {
DUPLEX_HALF = 0,
DUPLEX_FULL
};
struct fp_port {
Rocker *r;
World *world;
unsigned int index;
char *name;
uint32_t pport;
bool enabled;
uint32_t speed;
uint8_t duplex;
uint8_t autoneg;
uint8_t learning;
NICState *nic;
NICConf conf;
};
char *fp_port_get_name(FpPort *port)
{
return port->name;
}
bool fp_port_get_link_up(FpPort *port)
{
return !qemu_get_queue(port->nic)->link_down;
}
void fp_port_get_info(FpPort *port, RockerPortList *info)
{
info->value->name = g_strdup(port->name);
info->value->enabled = port->enabled;
info->value->link_up = fp_port_get_link_up(port);
info->value->speed = port->speed;
info->value->duplex = port->duplex;
info->value->autoneg = port->autoneg;
}
void fp_port_get_macaddr(FpPort *port, MACAddr *macaddr)
{
memcpy(macaddr->a, port->conf.macaddr.a, sizeof(macaddr->a));
}
void fp_port_set_macaddr(FpPort *port, MACAddr *macaddr)
{
/* XXX TODO implement and test setting mac addr
* XXX memcpy(port->conf.macaddr.a, macaddr.a, sizeof(port->conf.macaddr.a));
*/
}
uint8_t fp_port_get_learning(FpPort *port)
{
return port->learning;
}
void fp_port_set_learning(FpPort *port, uint8_t learning)
{
port->learning = learning;
}
int fp_port_get_settings(FpPort *port, uint32_t *speed,
uint8_t *duplex, uint8_t *autoneg)
{
*speed = port->speed;
*duplex = port->duplex;
*autoneg = port->autoneg;
return ROCKER_OK;
}
int fp_port_set_settings(FpPort *port, uint32_t speed,
uint8_t duplex, uint8_t autoneg)
{
/* XXX validate inputs */
port->speed = speed;
port->duplex = duplex;
port->autoneg = autoneg;
return ROCKER_OK;
}
bool fp_port_from_pport(uint32_t pport, uint32_t *port)
{
if (pport < 1 || pport > ROCKER_FP_PORTS_MAX) {
return false;
}
*port = pport - 1;
return true;
}
int fp_port_eg(FpPort *port, const struct iovec *iov, int iovcnt)
{
NetClientState *nc = qemu_get_queue(port->nic);
if (port->enabled) {
qemu_sendv_packet(nc, iov, iovcnt);
}
return ROCKER_OK;
}
static ssize_t fp_port_receive_iov(NetClientState *nc, const struct iovec *iov,
int iovcnt)
{
FpPort *port = qemu_get_nic_opaque(nc);
/* If the port is disabled, we want to drop this pkt
* now rather than queing it for later. We don't want
* any stale pkts getting into the device when the port
* transitions to enabled.
*/
if (!port->enabled) {
return -1;
}
return world_ingress(port->world, port->pport, iov, iovcnt);
}
static ssize_t fp_port_receive(NetClientState *nc, const uint8_t *buf,
size_t size)
{
const struct iovec iov = {
.iov_base = (uint8_t *)buf,
.iov_len = size
};
return fp_port_receive_iov(nc, &iov, 1);
}
static void fp_port_cleanup(NetClientState *nc)
{
}
static void fp_port_set_link_status(NetClientState *nc)
{
FpPort *port = qemu_get_nic_opaque(nc);
rocker_event_link_changed(port->r, port->pport, !nc->link_down);
}
static NetClientInfo fp_port_info = {
.type = NET_CLIENT_DRIVER_NIC,
.size = sizeof(NICState),
.receive = fp_port_receive,
.receive_iov = fp_port_receive_iov,
.cleanup = fp_port_cleanup,
.link_status_changed = fp_port_set_link_status,
};
World *fp_port_get_world(FpPort *port)
{
return port->world;
}
void fp_port_set_world(FpPort *port, World *world)
{
DPRINTF("port %d setting world \"%s\"\n", port->index, world_name(world));
port->world = world;
}
bool fp_port_check_world(FpPort *port, World *world)
{
return port->world == world;
}
bool fp_port_enabled(FpPort *port)
{
return port->enabled;
}
static void fp_port_set_link(FpPort *port, bool up)
{
NetClientState *nc = qemu_get_queue(port->nic);
if (up == nc->link_down) {
nc->link_down = !up;
nc->info->link_status_changed(nc);
}
}
void fp_port_enable(FpPort *port)
{
fp_port_set_link(port, true);
port->enabled = true;
DPRINTF("port %d enabled\n", port->index);
}
void fp_port_disable(FpPort *port)
{
port->enabled = false;
fp_port_set_link(port, false);
DPRINTF("port %d disabled\n", port->index);
}
FpPort *fp_port_alloc(Rocker *r, char *sw_name,
MACAddr *start_mac, unsigned int index,
NICPeers *peers)
{
FpPort *port = g_new0(FpPort, 1);
port->r = r;
port->index = index;
port->pport = index + 1;
/* front-panel switch port names are 1-based */
port->name = g_strdup_printf("%sp%d", sw_name, port->pport);
memcpy(port->conf.macaddr.a, start_mac, sizeof(port->conf.macaddr.a));
port->conf.macaddr.a[5] += index;
port->conf.bootindex = -1;
port->conf.peers = *peers;
port->nic = qemu_new_nic(&fp_port_info, &port->conf,
sw_name, NULL, port);
qemu_format_nic_info_str(qemu_get_queue(port->nic),
port->conf.macaddr.a);
fp_port_reset(port);
return port;
}
void fp_port_free(FpPort *port)
{
qemu_del_nic(port->nic);
g_free(port->name);
g_free(port);
}
void fp_port_reset(FpPort *port)
{
fp_port_disable(port);
port->speed = 10000; /* 10Gbps */
port->duplex = DUPLEX_FULL;
port->autoneg = 0;
}
