Commit a7042cf8 authored Dec 19, 2023 by Victor Nogueira Committed by David S. Miller Dec 26, 2023

net/sched: cls_api: Expose tc block to the datapath



The datapath can now find the block of the port in which the packet arrived
at.

In the next patch we show a possible usage of this patch in a new
version of mirred that multicasts to all ports except for the port in
which the packet arrived on.

Co-developed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Co-developed-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 913b47d3

include/net/sch_generic.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -484,6 +484,8 @@ struct tcf_block {
		struct mutex proto_destroy_lock; /* Lock for proto_destroy hashtable. */
		};

		struct tcf_block tcf_block_lookup(struct net net, u32 block_index);

		static inline bool lockdep_tcf_chain_is_locked(struct tcf_chain *chain)
		{
		return lockdep_is_held(&chain->filter_chain_lock);

net/sched/cls_api.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1011,12 +1011,13 @@ static struct tcf_block tcf_block_create(struct net net, struct Qdisc *q,
		return block;
		}

		static struct tcf_block tcf_block_lookup(struct net net, u32 block_index)
		struct tcf_block tcf_block_lookup(struct net net, u32 block_index)
		{
		struct tcf_net *tn = net_generic(net, tcf_net_id);

		return idr_find(&tn->idr, block_index);
		}
		EXPORT_SYMBOL(tcf_block_lookup);

		static struct tcf_block tcf_block_refcnt_get(struct net net, u32 block_index)
		{