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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

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Several conflicts here.

NFP driver bug fix adding nfp_netdev_is_nfp_repr() check to
nfp_fl_output() needed some adjustments because the code block is in
an else block now.

Parallel additions to net/pkt_cls.h and net/sch_generic.h

A bug fix in __tcp_retransmit_skb() conflicted with some of
the rbtree changes in net-next.

The tc action RCU callback fixes in 'net' had some overlap with some
of the recent tcf_block reworking.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2017-10-30 14:10:01 +09:00
parent aad93c70b9 0b07194bb5
commit e1ea2f9856
252 changed files with 2334 additions and 2095 deletions
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78
net/sched/cls_api.c
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@@ -77,6 +77,8 @@ out:
}
EXPORT_SYMBOL(register_tcf_proto_ops);
static struct workqueue_struct *tc_filter_wq;
int unregister_tcf_proto_ops(struct tcf_proto_ops *ops)
{
struct tcf_proto_ops *t;
@@ -86,6 +88,7 @@ int unregister_tcf_proto_ops(struct tcf_proto_ops *ops)
* tcf_proto_ops's destroy() handler.
*/
rcu_barrier();
flush_workqueue(tc_filter_wq);
write_lock(&cls_mod_lock);
list_for_each_entry(t, &tcf_proto_base, head) {
@@ -100,6 +103,12 @@ int unregister_tcf_proto_ops(struct tcf_proto_ops *ops)
}
EXPORT_SYMBOL(unregister_tcf_proto_ops);
bool tcf_queue_work(struct work_struct *work)
{
return queue_work(tc_filter_wq, work);
}
EXPORT_SYMBOL(tcf_queue_work);
/* Select new prio value from the range, managed by kernel. */
static inline u32 tcf_auto_prio(struct tcf_proto *tp)
@@ -308,27 +317,30 @@ int tcf_block_get(struct tcf_block **p_block,
}
EXPORT_SYMBOL(tcf_block_get);
void tcf_block_put_ext(struct tcf_block *block,
struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
struct tcf_block_ext_info *ei)
static void tcf_block_put_final(struct work_struct *work)
{
struct tcf_block *block = container_of(work, struct tcf_block, work);
struct tcf_chain *chain, *tmp;
if (!block)
return;
/* At this point, all the chains should have refcnt == 1. */
rtnl_lock();
list_for_each_entry_safe(chain, tmp, &block->chain_list, list)
tcf_chain_put(chain);
rtnl_unlock();
kfree(block);
}
tcf_block_offload_unbind(block, q, ei);
/* XXX: Standalone actions are not allowed to jump to any chain, and
* bound actions should be all removed after flushing. However,
* filters are destroyed in RCU callbacks, we have to hold the chains
* first, otherwise we would always race with RCU callbacks on this list
* without proper locking.
*/
/* Wait for existing RCU callbacks to cool down. */
rcu_barrier();
/* XXX: Standalone actions are not allowed to jump to any chain, and bound
* actions should be all removed after flushing. However, filters are destroyed
* in RCU callbacks, we have to hold the chains first, otherwise we would
* always race with RCU callbacks on this list without proper locking.
*/
static void tcf_block_put_deferred(struct work_struct *work)
{
struct tcf_block *block = container_of(work, struct tcf_block, work);
struct tcf_chain *chain;
rtnl_lock();
/* Hold a refcnt for all chains, except 0, in case they are gone. */
list_for_each_entry(chain, &block->chain_list, list)
if (chain->index)
@@ -338,13 +350,31 @@ void tcf_block_put_ext(struct tcf_block *block,
list_for_each_entry(chain, &block->chain_list, list)
tcf_chain_flush(chain);
/* Wait for RCU callbacks to release the reference count. */
INIT_WORK(&block->work, tcf_block_put_final);
/* Wait for RCU callbacks to release the reference count and make
* sure their works have been queued before this.
*/
rcu_barrier();
tcf_queue_work(&block->work);
rtnl_unlock();
}
/* At this point, all the chains should have refcnt == 1. */
list_for_each_entry_safe(chain, tmp, &block->chain_list, list)
tcf_chain_put(chain);
kfree(block);
void tcf_block_put_ext(struct tcf_block *block,
struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
struct tcf_block_ext_info *ei)
{
if (!block)
return;
tcf_block_offload_unbind(block, q, ei);
INIT_WORK(&block->work, tcf_block_put_deferred);
/* Wait for existing RCU callbacks to cool down, make sure their works
* have been queued before this. We can not flush pending works here
* because we are holding the RTNL lock.
*/
rcu_barrier();
tcf_queue_work(&block->work);
}
EXPORT_SYMBOL(tcf_block_put_ext);
@@ -354,6 +384,7 @@ void tcf_block_put(struct tcf_block *block)
tcf_block_put_ext(block, NULL, block->q, &ei);
}
EXPORT_SYMBOL(tcf_block_put);
struct tcf_block_cb {
@@ -1051,6 +1082,7 @@ void tcf_exts_destroy(struct tcf_exts *exts)
#ifdef CONFIG_NET_CLS_ACT
LIST_HEAD(actions);
ASSERT_RTNL();
tcf_exts_to_list(exts, &actions);
tcf_action_destroy(&actions, TCA_ACT_UNBIND);
kfree(exts->actions);
@@ -1229,6 +1261,10 @@ EXPORT_SYMBOL(tc_setup_cb_call);
static int __init tc_filter_init(void)
{
tc_filter_wq = alloc_ordered_workqueue("tc_filter_workqueue", 0);
if (!tc_filter_wq)
return -ENOMEM;
rtnl_register(PF_UNSPEC, RTM_NEWTFILTER, tc_ctl_tfilter, NULL, 0);
rtnl_register(PF_UNSPEC, RTM_DELTFILTER, tc_ctl_tfilter, NULL, 0);
rtnl_register(PF_UNSPEC, RTM_GETTFILTER, tc_ctl_tfilter,