On 8/28/25 1:58 PM, Eric Dumazet wrote:

Refactor icmpv6_xrlim_allow() and ip6_dst_hoplimit()
so that we acquire rcu_read_lock() a bit longer
to be able to use dst_dev_rcu() instead of dst_dev().

__ip6_rt_update_pmtu() and rt6_do_redirect can directly
use dst_dev_rcu() in sections already holding rcu_read_lock().

Small changes to use dst_dev_net_rcu() in
ip6_default_advmss(), ipv6_sock_ac_join(),
ip6_mc_find_dev() and ndisc_send_skb().

Fixes: 4a6ce2b6f2ec ("net: introduce a new function dst_dev_put()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 net/ipv6/anycast.c     | 2 +-
 net/ipv6/icmp.c        | 6 +++---
 net/ipv6/mcast.c       | 2 +-
 net/ipv6/ndisc.c       | 2 +-
 net/ipv6/output_core.c | 8 +++++---
 net/ipv6/route.c       | 7 +++----
 6 files changed, 14 insertions(+), 13 deletions(-)

Reviewed-by: David Ahern <dsahern@kernel.org>