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

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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>
This commit is contained in:
Victor Nogueira 2023-12-19 15:16:20 -03:00 committed by David S. Miller
parent 913b47d342
commit a7042cf8f2
2 changed files with 4 additions and 1 deletions
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2
include/net/sch_generic.h
View File

@ -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);

3
net/sched/cls_api.c
View File

@ -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)
{