diff options
| author | Asbjørn Sloth Tønnesen <ast@fiberby.net> | 2024-03-25 23:47:35 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-03-29 12:46:39 +0300 |
| commit | 2081fd3445fec6b9813c20e8b910c2abd6de31cb (patch) | |
| tree | f8fe6a0431b35d16c5e1b4bbd2c960622d9820b0 /net | |
| parent | f631ef39d81956a2ee69d25039781ceae1162f62 (diff) | |
| download | linux-2081fd3445fec6b9813c20e8b910c2abd6de31cb.tar.xz | |
net: sched: cls_api: add filter counter
Maintain a count of filters per block.
Counter updates are protected by cb_lock, which is
also used to protect the offload counters.
Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sched/cls_api.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 397c3d29659c..304a46ab0e0b 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -410,12 +410,30 @@ static void tcf_proto_get(struct tcf_proto *tp) refcount_inc(&tp->refcnt); } +static void tcf_block_filter_cnt_update(struct tcf_block *block, bool *counted, bool add) +{ + lockdep_assert_not_held(&block->cb_lock); + + down_write(&block->cb_lock); + if (*counted != add) { + if (add) { + atomic_inc(&block->filtercnt); + *counted = true; + } else { + atomic_dec(&block->filtercnt); + *counted = false; + } + } + up_write(&block->cb_lock); +} + static void tcf_chain_put(struct tcf_chain *chain); static void tcf_proto_destroy(struct tcf_proto *tp, bool rtnl_held, bool sig_destroy, struct netlink_ext_ack *extack) { tp->ops->destroy(tp, rtnl_held, extack); + tcf_block_filter_cnt_update(tp->chain->block, &tp->counted, false); if (sig_destroy) tcf_proto_signal_destroyed(tp->chain, tp); tcf_chain_put(tp->chain); @@ -2364,6 +2382,7 @@ replay: err = tp->ops->change(net, skb, tp, cl, t->tcm_handle, tca, &fh, flags, extack); if (err == 0) { + tcf_block_filter_cnt_update(block, &tp->counted, true); tfilter_notify(net, skb, n, tp, block, q, parent, fh, RTM_NEWTFILTER, false, rtnl_held, extack); tfilter_put(tp, fh); |