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net: sched: store net pointer in block and introduce qdisc_net helper

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Store net pointer in the block structure. Along the way, introduce
qdisc_net helper which allows to easily obtain net pointer for
qdisc instance.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2017-10-13 14:00:58 +02:00 committed by David S. Miller
parent 69d78ef25c
commit 855319becb
3 changed files with 9 additions and 0 deletions
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7
include/net/pkt_sched.h
View file

@ -4,7 +4,9 @@
#include <linux/jiffies.h>
#include <linux/ktime.h>
#include <linux/if_vlan.h>
#include <linux/netdevice.h>
#include <net/sch_generic.h>
#include <net/net_namespace.h>
#include <uapi/linux/pkt_sched.h>
#define DEFAULT_TX_QUEUE_LEN 1000
@ -146,4 +148,9 @@ static inline bool is_classid_clsact_egress(u32 classid)
TC_H_MIN(classid) == TC_H_MIN(TC_H_MIN_EGRESS);
}
static inline struct net *qdisc_net(struct Qdisc *q)
{
return dev_net(q->dev_queue->dev);
}
#endif

1
include/net/sch_generic.h
View file

@ -270,6 +270,7 @@ struct tcf_chain {
struct tcf_block {
struct list_head chain_list;
struct net *net;
struct Qdisc *q;
};

1
net/sched/cls_api.c
View file

@ -257,6 +257,7 @@ int tcf_block_get(struct tcf_block **p_block,
goto err_chain_create;
}
tcf_chain_filter_chain_ptr_set(chain, p_filter_chain);
block->net = qdisc_net(q);
block->q = q;
*p_block = block;
return 0;