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bpf: pass destroy() as a callback and remove its ndo_bpf subcommand

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As part of the transition from ndo_bpf() to callbacks attached to struct
bpf_offload_dev for some of the eBPF offload operations, move the
functions related to program destruction to the struct and remove the
subcommand that was used to call them through the NDO.

Remove function __bpf_offload_ndo(), which is no longer used.

Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Quentin Monnet
2018-11-09 13:03:30 +00:00
committed by Alexei Starovoitov
parent b07ade27e9
commit eb9119471e
5 changed files with 5 additions and 36 deletions
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24
kernel/bpf/offload.c
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@@ -123,23 +123,6 @@ err_maybe_put:
return err;
}
static int __bpf_offload_ndo(struct bpf_prog *prog, enum bpf_netdev_command cmd,
struct netdev_bpf *data)
{
struct bpf_prog_offload *offload = prog->aux->offload;
struct net_device *netdev;
ASSERT_RTNL();
if (!offload)
return -ENODEV;
netdev = offload->netdev;
data->command = cmd;
return netdev->netdev_ops->ndo_bpf(netdev, data);
}
int bpf_prog_offload_verifier_prep(struct bpf_verifier_env *env)
{
struct bpf_prog_offload *offload;
@@ -192,12 +175,9 @@ int bpf_prog_offload_finalize(struct bpf_verifier_env *env)
static void __bpf_prog_offload_destroy(struct bpf_prog *prog)
{
struct bpf_prog_offload *offload = prog->aux->offload;
struct netdev_bpf data = {};
data.offload.prog = prog;
if (offload->dev_state)
WARN_ON(__bpf_offload_ndo(prog, BPF_OFFLOAD_DESTROY, &data));
offload->offdev->ops->destroy(prog);
/* Make sure BPF_PROG_GET_NEXT_ID can't find this dead program */
bpf_prog_free_id(prog, true);
@@ -209,12 +189,10 @@ static void __bpf_prog_offload_destroy(struct bpf_prog *prog)
void bpf_prog_offload_destroy(struct bpf_prog *prog)
{
rtnl_lock();
down_write(&bpf_devs_lock);
if (prog->aux->offload)
__bpf_prog_offload_destroy(prog);
up_write(&bpf_devs_lock);
rtnl_unlock();
}
static int bpf_prog_offload_translate(struct bpf_prog *prog)