diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-06-09 02:09:23 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-06-11 18:37:08 -0700 |
| commit | c7de2cf053420d63bac85133469c965d4b1083e1 (patch) | |
| tree | b56f7c96d01e25f79fe1f9b7e5305265e92214d9 /include/net | |
| parent | cbd6890c5987cd7115147e1dd2c10d729afabb08 (diff) | |
pkt_sched: gen_kill_estimator() rcu fixes
gen_kill_estimator() API is incomplete or not well documented, since
caller should make sure an RCU grace period is respected before
freeing stats_lock.
This was partially addressed in commit 5d944c640b4
(gen_estimator: deadlock fix), but same problem exist for all
gen_kill_estimator() users, if lock they use is not already RCU
protected.
A code review shows xt_RATEEST.c, act_api.c, act_police.c have this
problem. Other are ok because they use qdisc lock, already RCU
protected.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/act_api.h | 2 | ||||
| -rw-r--r-- | include/net/netfilter/xt_rateest.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/net/act_api.h b/include/net/act_api.h index c05fd717c58..bab385f13ac 100644 --- a/include/net/act_api.h +++ b/include/net/act_api.h @@ -20,6 +20,7 @@ struct tcf_common { struct gnet_stats_queue tcfc_qstats; struct gnet_stats_rate_est tcfc_rate_est; spinlock_t tcfc_lock; + struct rcu_head tcfc_rcu; }; #define tcf_next common.tcfc_next #define tcf_index common.tcfc_index @@ -32,6 +33,7 @@ struct tcf_common { #define tcf_qstats common.tcfc_qstats #define tcf_rate_est common.tcfc_rate_est #define tcf_lock common.tcfc_lock +#define tcf_rcu common.tcfc_rcu struct tcf_police { struct tcf_common common; diff --git a/include/net/netfilter/xt_rateest.h b/include/net/netfilter/xt_rateest.h index ddbf37e1961..5e142779592 100644 --- a/include/net/netfilter/xt_rateest.h +++ b/include/net/netfilter/xt_rateest.h @@ -9,6 +9,7 @@ struct xt_rateest { struct gnet_estimator params; struct gnet_stats_rate_est rstats; struct gnet_stats_basic_packed bstats; + struct rcu_head rcu; }; extern struct xt_rateest *xt_rateest_lookup(const char *name); |