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xsk: Make xskmap flush_list common for all map instances

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The xskmap flush list is used to track entries that need to flushed
from via the xdp_do_flush_map() function. This list used to be
per-map, but there is really no reason for that. Instead make the
flush list global for all xskmaps, which simplifies __xsk_map_flush()
and xsk_map_alloc().

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20191219061006.21980-5-bjorn.topel@gmail.com
This commit is contained in:
Björn Töpel
2019-12-19 07:10:02 +01:00
committed by Alexei Starovoitov
parent fb5aacdf36
commit e312b9e706
4 changed files with 20 additions and 35 deletions
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9
net/core/filter.c
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@@ -3511,8 +3511,7 @@ err:
static int __bpf_tx_xdp_map(struct net_device *dev_rx, void *fwd,
struct bpf_map *map,
struct xdp_buff *xdp,
u32 index)
struct xdp_buff *xdp)
{
int err;
@@ -3537,7 +3536,7 @@ static int __bpf_tx_xdp_map(struct net_device *dev_rx, void *fwd,
case BPF_MAP_TYPE_XSKMAP: {
struct xdp_sock *xs = fwd;
err = __xsk_map_redirect(map, xdp, xs);
err = __xsk_map_redirect(xs, xdp);
return err;
}
default:
@@ -3562,7 +3561,7 @@ void xdp_do_flush_map(void)
__cpu_map_flush(map);
break;
case BPF_MAP_TYPE_XSKMAP:
__xsk_map_flush(map);
__xsk_map_flush();
break;
default:
break;
@@ -3619,7 +3618,7 @@ static int xdp_do_redirect_map(struct net_device *dev, struct xdp_buff *xdp,
if (ri->map_to_flush && unlikely(ri->map_to_flush != map))
xdp_do_flush_map();
err = __bpf_tx_xdp_map(dev, fwd, map, xdp, index);
err = __bpf_tx_xdp_map(dev, fwd, map, xdp);
if (unlikely(err))
goto err;