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net: sched: track device in tcf_block_get/put_ext() only for clsact binder types 

Clsact/ingress qdisc is not the only one using shared block,
red is also using it. The device tracking was originally introduced
by commit 913b47d342 ("net/sched: Introduce tc block netdev
tracking infra") for clsact/ingress only. Commit 94e2557d08 ("net:
sched: move block device tracking into tcf_block_get/put_ext()")
mistakenly enabled that for red as well.

Fix that by adding a check for the binder type being clsact when adding
device to the block->ports xarray.

Reported-by: Ido Schimmel <idosch@idosch.org>
Closes: https://lore.kernel.org/all/ZZ6JE0odnu1lLPtu@shredder/
Fixes: 94e2557d08 ("net: sched: move block device tracking into tcf_block_get/put_ext()")
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Tested-by: Victor Nogueira <victor@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2024-01-12 12:39:30 +01:00 committed by David S. Miller
parent 482521d8e0
commit e18405d0be
1 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
net/sched/cls_api.c
View File

@ -1424,6 +1424,14 @@ static void tcf_block_owner_del(struct tcf_block *block,
WARN_ON(1);
}
static bool tcf_block_tracks_dev(struct tcf_block *block,
struct tcf_block_ext_info *ei)
{
return tcf_block_shared(block) &&
(ei->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS ||
ei->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS);
}
int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
struct tcf_block_ext_info *ei,
struct netlink_ext_ack *extack)
@ -1462,7 +1470,7 @@ int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
if (err)
goto err_block_offload_bind;
if (tcf_block_shared(block)) {
if (tcf_block_tracks_dev(block, ei)) {
err = xa_insert(&block->ports, dev->ifindex, dev, GFP_KERNEL);
if (err) {
NL_SET_ERR_MSG(extack, "block dev insert failed");
@ -1516,7 +1524,7 @@ void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
if (!block)
return;
if (tcf_block_shared(block))
if (tcf_block_tracks_dev(block, ei))
xa_erase(&block->ports, dev->ifindex);
tcf_chain0_head_change_cb_del(block, ei);
tcf_block_owner_del(block, q, ei->binder_type);