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bpf: Move offload initialization into late_initcall 

So we don't have to initialize it manually from several paths.

Cc: John Fastabend <john.fastabend@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Anatoly Burakov <anatoly.burakov@intel.com>
Cc: Alexander Lobakin <alexandr.lobakin@intel.com>
Cc: Magnus Karlsson <magnus.karlsson@gmail.com>
Cc: Maryam Tahhan <mtahhan@redhat.com>
Cc: xdp-hints@xdp-project.net
Cc: netdev@vger.kernel.org
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20230119221536.3349901-4-sdf@google.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
Stanislav Fomichev 2023-01-19 14:15:22 -08:00 committed by Martin KaFai Lau
parent 9d03ebc71a
commit f1fc43d039
1 changed files with 7 additions and 15 deletions
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22
kernel/bpf/offload.c
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@ -56,7 +56,6 @@ static const struct rhashtable_params offdevs_params = {
}; };
static struct rhashtable offdevs; static struct rhashtable offdevs;
static bool offdevs_inited;
static int bpf_dev_offload_check(struct net_device *netdev) static int bpf_dev_offload_check(struct net_device *netdev)
{ {
@ -72,8 +71,6 @@ bpf_offload_find_netdev(struct net_device *netdev)
{ {
lockdep_assert_held(&bpf_devs_lock); lockdep_assert_held(&bpf_devs_lock);
if (!offdevs_inited)
return NULL;
return rhashtable_lookup_fast(&offdevs, &netdev, offdevs_params); return rhashtable_lookup_fast(&offdevs, &netdev, offdevs_params);
} }
@ -673,18 +670,6 @@ struct bpf_offload_dev *
bpf_offload_dev_create(const struct bpf_prog_offload_ops *ops, void *priv) bpf_offload_dev_create(const struct bpf_prog_offload_ops *ops, void *priv)
{ {
struct bpf_offload_dev *offdev; struct bpf_offload_dev *offdev;
int err;
down_write(&bpf_devs_lock);
if (!offdevs_inited) {
err = rhashtable_init(&offdevs, &offdevs_params);
if (err) {
up_write(&bpf_devs_lock);
return ERR_PTR(err);
}
offdevs_inited = true;
}
up_write(&bpf_devs_lock);
offdev = kzalloc(sizeof(*offdev), GFP_KERNEL); offdev = kzalloc(sizeof(*offdev), GFP_KERNEL);
if (!offdev) if (!offdev)
@ -710,3 +695,10 @@ void *bpf_offload_dev_priv(struct bpf_offload_dev *offdev)
return offdev->priv; return offdev->priv;
} }
EXPORT_SYMBOL_GPL(bpf_offload_dev_priv); EXPORT_SYMBOL_GPL(bpf_offload_dev_priv);
static int __init bpf_offload_init(void)
{
return rhashtable_init(&offdevs, &offdevs_params);
}
late_initcall(bpf_offload_init);