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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

4
net/core/dev.c
View File

@@ -5468,10 +5468,6 @@ static int generic_xdp_install(struct net_device *dev, struct netdev_bpf *xdp)
}
break;
case XDP_QUERY_PROG:
xdp->prog_id = old ? old->aux->id : 0;
break;
default:
ret = -EINVAL;
break;

9
net/core/xdp.c
View File

@@ -400,15 +400,6 @@ void __xdp_release_frame(void *data, struct xdp_mem_info *mem)
}
EXPORT_SYMBOL_GPL(__xdp_release_frame);
int xdp_attachment_query(struct xdp_attachment_info *info,
struct netdev_bpf *bpf)
{
bpf->prog_id = info->prog ? info->prog->aux->id : 0;
bpf->prog_flags = info->prog ? info->flags : 0;
return 0;
}
EXPORT_SYMBOL_GPL(xdp_attachment_query);
bool xdp_attachment_flags_ok(struct xdp_attachment_info *info,
struct netdev_bpf *bpf)
{