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netdevsim: merge sdev into dev 

As previously introduce dev which is mapped 1:1 to a bus device covers
the purpose of the original shared device, merge the sdev code into dev.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2019-04-25 15:59:50 +02:00 committed by David S. Miller
parent a60f9e48b7
commit d514f41e79
6 changed files with 120 additions and 119 deletions
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2
drivers/net/netdevsim/Makefile
View File

@ -3,7 +3,7 @@
obj-$(CONFIG_NETDEVSIM) += netdevsim.o
netdevsim-objs := \
netdev.o dev.o fib.o sdev.o bus.o
netdev.o dev.o fib.o bus.o
ifeq ($(CONFIG_BPF_SYSCALL),y)
netdevsim-objs += \

79
drivers/net/netdevsim/bpf.c
View File

@ -27,7 +27,7 @@
bpf_verifier_log_write(env, "[netdevsim] " fmt, ##__VA_ARGS__)
struct nsim_bpf_bound_prog {
struct netdevsim_shared_dev *sdev;
struct nsim_dev *nsim_dev;
struct bpf_prog *prog;
struct dentry *ddir;
const char *state;
@ -65,8 +65,8 @@ nsim_bpf_verify_insn(struct bpf_verifier_env *env, int insn_idx, int prev_insn)
struct nsim_bpf_bound_prog *state;
state = env->prog->aux->offload->dev_priv;
if (state->sdev->bpf_bind_verifier_delay && !insn_idx)
msleep(state->sdev->bpf_bind_verifier_delay);
if (state->nsim_dev->bpf_bind_verifier_delay && !insn_idx)
msleep(state->nsim_dev->bpf_bind_verifier_delay);
if (insn_idx == env->prog->len - 1)
pr_vlog(env, "Hello from netdevsim!\n");
@ -213,7 +213,7 @@ nsim_xdp_set_prog(struct netdevsim *ns, struct netdev_bpf *bpf,
return 0;
}
static int nsim_bpf_create_prog(struct netdevsim_shared_dev *sdev,
static int nsim_bpf_create_prog(struct nsim_dev *nsim_dev,
struct bpf_prog *prog)
{
struct nsim_bpf_bound_prog *state;
@ -223,13 +223,13 @@ static int nsim_bpf_create_prog(struct netdevsim_shared_dev *sdev,
if (!state)
return -ENOMEM;
state->sdev = sdev;
state->nsim_dev = nsim_dev;
state->prog = prog;
state->state = "verify";
/* Program id is not populated yet when we create the state. */
sprintf(name, "%u", sdev->prog_id_gen++);
state->ddir = debugfs_create_dir(name, sdev->ddir_bpf_bound_progs);
sprintf(name, "%u", nsim_dev->prog_id_gen++);
state->ddir = debugfs_create_dir(name, nsim_dev->ddir_bpf_bound_progs);
if (IS_ERR_OR_NULL(state->ddir)) {
kfree(state);
return -ENOMEM;
@ -240,7 +240,7 @@ static int nsim_bpf_create_prog(struct netdevsim_shared_dev *sdev,
&state->state, &nsim_bpf_string_fops);
debugfs_create_bool("loaded", 0400, state->ddir, &state->is_loaded);
list_add_tail(&state->l, &sdev->bpf_bound_progs);
list_add_tail(&state->l, &nsim_dev->bpf_bound_progs);
prog->aux->offload->dev_priv = state;
@ -249,13 +249,13 @@ static int nsim_bpf_create_prog(struct netdevsim_shared_dev *sdev,
static int nsim_bpf_verifier_prep(struct bpf_prog *prog)
{
struct netdevsim_shared_dev *sdev =
struct nsim_dev *nsim_dev =
bpf_offload_dev_priv(prog->aux->offload->offdev);
if (!sdev->bpf_bind_accept)
if (!nsim_dev->bpf_bind_accept)
return -EOPNOTSUPP;
return nsim_bpf_create_prog(sdev, prog);
return nsim_bpf_create_prog(nsim_dev, prog);
}
static int nsim_bpf_translate(struct bpf_prog *prog)
@ -514,7 +514,7 @@ nsim_bpf_map_alloc(struct netdevsim *ns, struct bpf_offloaded_map *offmap)
}
offmap->dev_ops = &nsim_bpf_map_ops;
list_add_tail(&nmap->l, &ns->sdev->bpf_bound_maps);
list_add_tail(&nmap->l, &ns->nsim_dev->bpf_bound_maps);
return 0;
@ -578,51 +578,46 @@ int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf)
}
}
static int nsim_bpf_sdev_init(struct netdevsim_shared_dev *sdev)
int nsim_bpf_dev_init(struct nsim_dev *nsim_dev)
{
int err;
INIT_LIST_HEAD(&sdev->bpf_bound_progs);
INIT_LIST_HEAD(&sdev->bpf_bound_maps);
INIT_LIST_HEAD(&nsim_dev->bpf_bound_progs);
INIT_LIST_HEAD(&nsim_dev->bpf_bound_maps);
sdev->ddir_bpf_bound_progs =
debugfs_create_dir("bpf_bound_progs", sdev->ddir);
if (IS_ERR_OR_NULL(sdev->ddir_bpf_bound_progs))
nsim_dev->ddir_bpf_bound_progs = debugfs_create_dir("bpf_bound_progs",
nsim_dev->ddir);
if (IS_ERR_OR_NULL(nsim_dev->ddir_bpf_bound_progs))
return -ENOMEM;
sdev->bpf_dev = bpf_offload_dev_create(&nsim_bpf_dev_ops, sdev);
err = PTR_ERR_OR_ZERO(sdev->bpf_dev);
nsim_dev->bpf_dev = bpf_offload_dev_create(&nsim_bpf_dev_ops, nsim_dev);
err = PTR_ERR_OR_ZERO(nsim_dev->bpf_dev);
if (err)
return err;
sdev->bpf_bind_accept = true;
debugfs_create_bool("bpf_bind_accept", 0600, sdev->ddir,
&sdev->bpf_bind_accept);
debugfs_create_u32("bpf_bind_verifier_delay", 0600, sdev->ddir,
&sdev->bpf_bind_verifier_delay);
nsim_dev->bpf_bind_accept = true;
debugfs_create_bool("bpf_bind_accept", 0600, nsim_dev->ddir,
&nsim_dev->bpf_bind_accept);
debugfs_create_u32("bpf_bind_verifier_delay", 0600, nsim_dev->ddir,
&nsim_dev->bpf_bind_verifier_delay);
return 0;
}
static void nsim_bpf_sdev_uninit(struct netdevsim_shared_dev *sdev)
void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev)
{
WARN_ON(!list_empty(&sdev->bpf_bound_progs));
WARN_ON(!list_empty(&sdev->bpf_bound_maps));
bpf_offload_dev_destroy(sdev->bpf_dev);
WARN_ON(!list_empty(&nsim_dev->bpf_bound_progs));
WARN_ON(!list_empty(&nsim_dev->bpf_bound_maps));
bpf_offload_dev_destroy(nsim_dev->bpf_dev);
}
int nsim_bpf_init(struct netdevsim *ns)
{
int err;
if (ns->sdev->refcnt == 1) {
err = nsim_bpf_sdev_init(ns->sdev);
if (err)
return err;
}
err = bpf_offload_dev_netdev_register(ns->sdev->bpf_dev, ns->netdev);
err = bpf_offload_dev_netdev_register(ns->nsim_dev->bpf_dev,
ns->netdev);
if (err)
goto err_bpf_sdev_uninit;
return err;
debugfs_create_u32("bpf_offloaded_id", 0400, ns->ddir,
&ns->bpf_offloaded_id);
@ -644,11 +639,6 @@ int nsim_bpf_init(struct netdevsim *ns)
&ns->bpf_map_accept);
return 0;
err_bpf_sdev_uninit:
if (ns->sdev->refcnt == 1)
nsim_bpf_sdev_uninit(ns->sdev);
return err;
}
void nsim_bpf_uninit(struct netdevsim *ns)
@ -656,8 +646,5 @@ void nsim_bpf_uninit(struct netdevsim *ns)
WARN_ON(ns->xdp.prog);
WARN_ON(ns->xdp_hw.prog);
WARN_ON(ns->bpf_offloaded);
bpf_offload_dev_netdev_unregister(ns->sdev->bpf_dev, ns->netdev);
if (ns->sdev->refcnt == 1)
nsim_bpf_sdev_uninit(ns->sdev);
bpf_offload_dev_netdev_unregister(ns->nsim_dev->bpf_dev, ns->netdev);
}

47
drivers/net/netdevsim/dev.c
View File

@ -15,12 +15,31 @@
* THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
*/
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/rtnetlink.h>
#include <net/devlink.h>
#include "netdevsim.h"
static struct dentry *nsim_dev_ddir;
static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev)
{
char dev_ddir_name[10];
sprintf(dev_ddir_name, "%u", nsim_dev->nsim_bus_dev->dev.id);
nsim_dev->ddir = debugfs_create_dir(dev_ddir_name, nsim_dev_ddir);
if (IS_ERR_OR_NULL(nsim_dev->ddir))
return PTR_ERR_OR_ZERO(nsim_dev->ddir) ?: -EINVAL;
return 0;
}
static void nsim_dev_debugfs_exit(struct nsim_dev *nsim_dev)
{
debugfs_remove_recursive(nsim_dev->ddir);
}
static u64 nsim_dev_ipv4_fib_resource_occ_get(void *priv)
{
struct nsim_dev *nsim_dev = priv;
@ -184,6 +203,7 @@ static struct nsim_dev *nsim_dev_create(struct nsim_bus_dev *nsim_bus_dev)
if (!devlink)
return ERR_PTR(-ENOMEM);
nsim_dev = devlink_priv(devlink);
nsim_dev->nsim_bus_dev = nsim_bus_dev;
nsim_dev->fib_data = nsim_fib_create();
if (IS_ERR(nsim_dev->fib_data)) {
@ -199,8 +219,20 @@ static struct nsim_dev *nsim_dev_create(struct nsim_bus_dev *nsim_bus_dev)
if (err)
goto err_resources_unregister;
err = nsim_dev_debugfs_init(nsim_dev);
if (err)
goto err_dl_unregister;
err = nsim_bpf_dev_init(nsim_dev);
if (err)
goto err_debugfs_exit;
return nsim_dev;
err_debugfs_exit:
nsim_dev_debugfs_exit(nsim_dev);
err_dl_unregister:
devlink_unregister(devlink);
err_resources_unregister:
devlink_resources_unregister(devlink, NULL);
err_fib_destroy:
@ -228,8 +260,23 @@ void nsim_dev_destroy(struct nsim_dev *nsim_dev)
{
struct devlink *devlink = priv_to_devlink(nsim_dev);
nsim_bpf_dev_exit(nsim_dev);
nsim_dev_debugfs_exit(nsim_dev);
devlink_unregister(devlink);
devlink_resources_unregister(devlink, NULL);
nsim_fib_destroy(nsim_dev->fib_data);
devlink_free(devlink);
}
int nsim_dev_init(void)
{
nsim_dev_ddir = debugfs_create_dir(DRV_NAME "_dev", NULL);
if (IS_ERR_OR_NULL(nsim_dev_ddir))
return -ENOMEM;
return 0;
}
void nsim_dev_exit(void)
{
debugfs_remove_recursive(nsim_dev_ddir);
}

49
drivers/net/netdevsim/netdev.c
View File

@ -32,24 +32,24 @@ static int nsim_get_port_parent_id(struct net_device *dev,
{
struct netdevsim *ns = netdev_priv(dev);
ppid->id_len = sizeof(ns->sdev->switch_id);
memcpy(&ppid->id, &ns->sdev->switch_id, ppid->id_len);
ppid->id_len = sizeof(ns->nsim_dev->nsim_bus_dev->dev.id);
memcpy(&ppid->id, &ns->nsim_dev->nsim_bus_dev->dev.id, ppid->id_len);
return 0;
}
static int nsim_init(struct net_device *dev)
{
struct netdevsim *ns = netdev_priv(dev);
char sdev_link_name[32];
char dev_link_name[32];
int err;
ns->ddir = debugfs_create_dir(netdev_name(dev), nsim_ddir);
if (IS_ERR_OR_NULL(ns->ddir))
return -ENOMEM;
sprintf(sdev_link_name, "../../" DRV_NAME "_sdev/%u",
ns->sdev->switch_id);
debugfs_create_symlink("sdev", ns->ddir, sdev_link_name);
sprintf(dev_link_name, "../../" DRV_NAME "_dev/%u",
ns->nsim_dev->nsim_bus_dev->dev.id);
debugfs_create_symlink("dev", ns->ddir, dev_link_name);
err = nsim_bpf_init(ns);
if (err)
@ -80,7 +80,6 @@ static void nsim_free(struct net_device *dev)
nsim_dev_destroy(ns->nsim_dev);
nsim_bus_dev_del(ns->nsim_bus_dev);
/* netdev and vf state will be freed out of device_release() */
nsim_sdev_put(ns->sdev);
}
static netdev_tx_t nsim_start_xmit(struct sk_buff *skb, struct net_device *dev)
@ -366,31 +365,11 @@ static int nsim_newlink(struct net *src_net, struct net_device *dev,
struct netlink_ext_ack *extack)
{
struct netdevsim *ns = netdev_priv(dev);
struct netdevsim *joinns = NULL;
int err;
if (tb[IFLA_LINK]) {
struct net_device *joindev;
joindev = __dev_get_by_index(src_net,
nla_get_u32(tb[IFLA_LINK]));
if (!joindev)
return -ENODEV;
if (joindev->netdev_ops != &nsim_netdev_ops)
return -EINVAL;
joinns = netdev_priv(joindev);
}
ns->sdev = nsim_sdev_get(joinns);
if (IS_ERR(ns->sdev))
return PTR_ERR(ns->sdev);
ns->nsim_bus_dev = nsim_bus_dev_new(~0, 0);
if (IS_ERR(ns->nsim_bus_dev)) {
err = PTR_ERR(ns->nsim_bus_dev);
goto err_sdev_put;
}
if (IS_ERR(ns->nsim_bus_dev))
return PTR_ERR(ns->nsim_bus_dev);
SET_NETDEV_DEV(dev, &ns->nsim_bus_dev->dev);
ns->netdev = dev;
@ -410,8 +389,6 @@ err_dev_destroy:
nsim_dev_destroy(ns->nsim_dev);
err_dev_del:
nsim_bus_dev_del(ns->nsim_bus_dev);
err_sdev_put:
nsim_sdev_put(ns->sdev);
return err;
}
@ -431,13 +408,13 @@ static int __init nsim_module_init(void)
if (IS_ERR_OR_NULL(nsim_ddir))
return -ENOMEM;
err = nsim_sdev_init();
err = nsim_dev_init();
if (err)
goto err_debugfs_destroy;
err = nsim_bus_init();
if (err)
goto err_sdev_exit;
goto err_dev_exit;
err = rtnl_link_register(&nsim_link_ops);
if (err)
@ -447,8 +424,8 @@ static int __init nsim_module_init(void)
err_bus_exit:
nsim_bus_exit();
err_sdev_exit:
nsim_sdev_exit();
err_dev_exit:
nsim_dev_exit();
err_debugfs_destroy:
debugfs_remove_recursive(nsim_ddir);
return err;
@ -458,7 +435,7 @@ static void __exit nsim_module_exit(void)
{
rtnl_link_unregister(&nsim_link_ops);
nsim_bus_exit();
nsim_sdev_exit();
nsim_dev_exit();
debugfs_remove_recursive(nsim_ddir);
}

54
drivers/net/netdevsim/netdevsim.h
View File

@ -26,37 +26,6 @@
#define NSIM_EA(extack, msg) NL_SET_ERR_MSG_MOD((extack), msg)
struct bpf_prog;
struct bpf_offload_dev;
struct dentry;
struct nsim_vf_config;
struct nsim_fib_data;
struct netdevsim_shared_dev {
unsigned int refcnt;
u32 switch_id;
struct dentry *ddir;
struct bpf_offload_dev *bpf_dev;
bool bpf_bind_accept;
u32 bpf_bind_verifier_delay;
struct dentry *ddir_bpf_bound_progs;
u32 prog_id_gen;
struct list_head bpf_bound_progs;
struct list_head bpf_bound_maps;
};
struct netdevsim;
struct netdevsim_shared_dev *nsim_sdev_get(struct netdevsim *joinns);
void nsim_sdev_put(struct netdevsim_shared_dev *sdev);
int nsim_sdev_init(void);
void nsim_sdev_exit(void);
#define NSIM_IPSEC_MAX_SA_COUNT 33
#define NSIM_IPSEC_VALID BIT(31)
@ -87,7 +56,6 @@ struct netdevsim {
struct u64_stats_sync syncp;
struct nsim_bus_dev *nsim_bus_dev;
struct netdevsim_shared_dev *sdev;
struct dentry *ddir;
@ -107,6 +75,8 @@ struct netdevsim {
};
#ifdef CONFIG_BPF_SYSCALL
int nsim_bpf_dev_init(struct nsim_dev *nsim_dev);
void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev);
int nsim_bpf_init(struct netdevsim *ns);
void nsim_bpf_uninit(struct netdevsim *ns);
int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);
@ -114,6 +84,15 @@ int nsim_bpf_disable_tc(struct netdevsim *ns);
int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
void *type_data, void *cb_priv);
#else
static inline int nsim_bpf_dev_init(struct nsim_dev *nsim_dev)
{
return 0;
}
static inline void nsim_bpf_dev_exit(struct nsim_dev *nsim_dev)
{
}
static inline int nsim_bpf_init(struct netdevsim *ns)
{
return 0;
@ -152,13 +131,24 @@ enum nsim_resource_id {
};
struct nsim_dev {
struct nsim_bus_dev *nsim_bus_dev;
struct nsim_fib_data *fib_data;
struct dentry *ddir;
struct bpf_offload_dev *bpf_dev;
bool bpf_bind_accept;
u32 bpf_bind_verifier_delay;
struct dentry *ddir_bpf_bound_progs;
u32 prog_id_gen;
struct list_head bpf_bound_progs;
struct list_head bpf_bound_maps;
};
struct nsim_dev *
nsim_dev_create_with_ns(struct nsim_bus_dev *nsim_bus_dev,
struct netdevsim *ns);
void nsim_dev_destroy(struct nsim_dev *nsim_dev);
int nsim_dev_init(void);
void nsim_dev_exit(void);
struct nsim_fib_data *nsim_fib_create(void);
void nsim_fib_destroy(struct nsim_fib_data *fib_data);

8
tools/testing/selftests/bpf/test_offload.py
View File

@ -335,7 +335,7 @@ class NetdevSim:
self.ns = ""
self.dfs_dir = '/sys/kernel/debug/netdevsim/%s' % (self.dev['ifname'])
self.sdev_dir = self.dfs_dir + '/sdev/'
self.dev_dir = self.dfs_dir + '/dev/'
self.dfs_refresh()
def __getitem__(self, key):
@ -368,12 +368,12 @@ class NetdevSim:
return data.strip()
def dfs_num_bound_progs(self):
path = os.path.join(self.sdev_dir, "bpf_bound_progs")
path = os.path.join(self.dev_dir, "bpf_bound_progs")
_, progs = cmd('ls %s' % (path))
return len(progs.split())
def dfs_get_bound_progs(self, expected):
progs = DebugfsDir(os.path.join(self.sdev_dir, "bpf_bound_progs"))
progs = DebugfsDir(os.path.join(self.dev_dir, "bpf_bound_progs"))
if expected is not None:
if len(progs) != expected:
fail(True, "%d BPF programs bound, expected %d" %
@ -1055,7 +1055,7 @@ try:
start_test("Test if netdev removal waits for translation...")
delay_msec = 500
sim.dfs["sdev/bpf_bind_verifier_delay"] = delay_msec
sim.dfs["dev/bpf_bind_verifier_delay"] = delay_msec
start = time.time()
cmd_line = "tc filter add dev %s ingress bpf %s da skip_sw" % \
(sim['ifname'], obj)