diff options
Diffstat (limited to 'net/ipv6/ip6_flowlabel.c')
| -rw-r--r-- | net/ipv6/ip6_flowlabel.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c index 819578e92499..4a06ed01d0c3 100644 --- a/net/ipv6/ip6_flowlabel.c +++ b/net/ipv6/ip6_flowlabel.c @@ -475,6 +475,32 @@ static inline void fl_link(struct ipv6_pinfo *np, struct ipv6_fl_socklist *sfl, spin_unlock_bh(&ip6_sk_fl_lock); } +int ipv6_flowlabel_opt_get(struct sock *sk, struct in6_flowlabel_req *freq) +{ + struct ipv6_pinfo *np = inet6_sk(sk); + struct ipv6_fl_socklist *sfl; + + rcu_read_lock_bh(); + + for_each_sk_fl_rcu(np, sfl) { + if (sfl->fl->label == (np->flow_label & IPV6_FLOWLABEL_MASK)) { + spin_lock_bh(&ip6_fl_lock); + freq->flr_label = sfl->fl->label; + freq->flr_dst = sfl->fl->dst; + freq->flr_share = sfl->fl->share; + freq->flr_expires = (sfl->fl->expires - jiffies) / HZ; + freq->flr_linger = sfl->fl->linger / HZ; + + spin_unlock_bh(&ip6_fl_lock); + rcu_read_unlock_bh(); + return 0; + } + } + rcu_read_unlock_bh(); + + return -ENOENT; +} + int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen) { int uninitialized_var(err); |