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bpf, xdp: Remove XDP_QUERY_PROG and XDP_QUERY_PROG_HW XDP commands

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Now that BPF program/link management is centralized in generic net_device
code, kernel code never queries program id from drivers, so
XDP_QUERY_PROG/XDP_QUERY_PROG_HW commands are unnecessary.

This patch removes all the implementations of those commands in kernel, along
the xdp_attachment_query().

This patch was compile-tested on allyesconfig.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200722064603.3350758-10-andriin@fb.com
This commit is contained in:
Andrii Nakryiko
2020-07-21 23:46:02 -07:00
committed by Alexei Starovoitov
parent fe48230cf2
commit e8407fdeb9
28 changed files with 2 additions and 218 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/net/hyperv/netvsc_bpf.c
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@@ -163,16 +163,6 @@ int netvsc_vf_setxdp(struct net_device *vf_netdev, struct bpf_prog *prog)
return ret;
}
static u32 netvsc_xdp_query(struct netvsc_device *nvdev)
{
struct bpf_prog *prog = netvsc_xdp_get(nvdev);
if (prog)
return prog->aux->id;
return 0;
}
int netvsc_bpf(struct net_device *dev, struct netdev_bpf *bpf)
{
struct net_device_context *ndevctx = netdev_priv(dev);
@@ -182,12 +172,7 @@ int netvsc_bpf(struct net_device *dev, struct netdev_bpf *bpf)
int ret;
if (!nvdev || nvdev->destroy) {
if (bpf->command == XDP_QUERY_PROG) {
bpf->prog_id = 0;
return 0; /* Query must always succeed */
} else {
return -ENODEV;
}
return -ENODEV;
}
switch (bpf->command) {
@@ -208,10 +193,6 @@ int netvsc_bpf(struct net_device *dev, struct netdev_bpf *bpf)
return ret;
case XDP_QUERY_PROG:
bpf->prog_id = netvsc_xdp_query(nvdev);
return 0;
default:
return -EINVAL;
}