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Code Issues Releases Wiki Activity

Add new "dummy" netdev and dpif implementations for use in unit tests.

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This commit is contained in:
Ben Pfaff
2010-11-29 12:21:08 -08:00
parent b31bcf60cf
commit 614c489203
9 changed files with 455 additions and 10 deletions
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38
lib/dpif-netdev.c
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@@ -32,7 +32,9 @@
#include <unistd.h>
#include "csum.h"
#include "dpif.h"
#include "dpif-provider.h"
#include "dummy.h"
#include "flow.h"
#include "hmap.h"
#include "list.h"
@@ -62,6 +64,7 @@ enum { DP_NETDEV_HEADROOM = 2 + VLAN_HEADER_LEN };
/* Datapath based on the network device interface from netdev.h. */
struct dp_netdev {
const struct dpif_class *class;
char *name;
int open_cnt;
bool destroyed;
@@ -130,16 +133,20 @@ static void dp_netdev_flow_flush(struct dp_netdev *);
static int do_add_port(struct dp_netdev *, const char *devname, uint16_t flags,
uint16_t port_no);
static int do_del_port(struct dp_netdev *, uint16_t port_no);
static int dpif_netdev_open(const struct dpif_class *, const char *name,
bool create, struct dpif **);
static int dp_netdev_output_control(struct dp_netdev *, const struct ofpbuf *,
int queue_no, int port_no, uint32_t arg);
static int dp_netdev_execute_actions(struct dp_netdev *,
struct ofpbuf *, struct flow *,
const union odp_action *, int n);
static struct dpif_class dpif_dummy_class;
static struct dpif_netdev *
dpif_netdev_cast(const struct dpif *dpif)
{
dpif_assert_class(dpif, &dpif_netdev_class);
assert(dpif->dpif_class->open == dpif_netdev_open);
return CONTAINER_OF(dpif, struct dpif_netdev, dpif);
}
@@ -158,8 +165,7 @@ create_dpif_netdev(struct dp_netdev *dp)
dp->open_cnt++;
dpif = xmalloc(sizeof *dpif);
dpif_init(&dpif->dpif, &dpif_netdev_class, dp->name,
netflow_id >> 8, netflow_id);
dpif_init(&dpif->dpif, dp->class, dp->name, netflow_id >> 8, netflow_id);
dpif->dp = dp;
dpif->listen_mask = 0;
dpif->dp_serial = dp->serial;
@@ -168,13 +174,15 @@ create_dpif_netdev(struct dp_netdev *dp)
}
static int
create_dp_netdev(const char *name, struct dp_netdev **dpp)
create_dp_netdev(const char *name, const struct dpif_class *class,
struct dp_netdev **dpp)
{
struct dp_netdev *dp;
int error;
int i;
dp = xzalloc(sizeof *dp);
dp->class = class;
dp->name = xstrdup(name);
dp->open_cnt = 0;
dp->drop_frags = false;
@@ -196,7 +204,7 @@ create_dp_netdev(const char *name, struct dp_netdev **dpp)
}
static int
dpif_netdev_open(const struct dpif_class *class OVS_UNUSED, const char *name,
dpif_netdev_open(const struct dpif_class *class, const char *name,
bool create, struct dpif **dpifp)
{
struct dp_netdev *dp;
@@ -206,14 +214,16 @@ dpif_netdev_open(const struct dpif_class *class OVS_UNUSED, const char *name,
if (!create) {
return ENODEV;
} else {
int error = create_dp_netdev(name, &dp);
int error = create_dp_netdev(name, class, &dp);
if (error) {
return error;
}
assert(dp != NULL);
}
} else {
if (create) {
if (dp->class != class) {
return EINVAL;
} else if (create) {
return EEXIST;
}
}
@@ -313,7 +323,9 @@ do_add_port(struct dp_netdev *dp, const char *devname, uint16_t flags,
memset(&netdev_options, 0, sizeof netdev_options);
netdev_options.name = devname;
netdev_options.ethertype = NETDEV_ETH_TYPE_ANY;
if (internal) {
if (dp->class == &dpif_dummy_class) {
netdev_options.type = "dummy";
} else if (internal) {
netdev_options.type = "tap";
}
@@ -1249,3 +1261,13 @@ const struct dpif_class dpif_netdev_class = {
dpif_netdev_recv,
dpif_netdev_recv_wait,
};
void
dpif_dummy_register(void)
{
if (!dpif_dummy_class.type) {
dpif_dummy_class = dpif_netdev_class;
dpif_dummy_class.type = "dummy";
dp_register_provider(&dpif_dummy_class);
}
}