This patch series improves the performance of the PPPoE receive paths.

Patch 1 converts the ppp->rlock from a spinlock to a read-write lock,
allowing concurrent receive-side processing when no state is being
modified.

Patch 2 optimizes PPPoE receive performance by bypassing sk_receive_skb()
when the socket is in the PPPOX_BOUND state, avoiding unnecessary socket
locking and overhead.

Patch 3 synchronizes all updates to net_device->stats using
DEV_STATS_INC() to prevent data races now that the receive path may run on
multiple CPUs.

Qingfang Deng (3):
  ppp: convert rlock to rwlock to improve RX concurrency
  pppoe: call ppp_input directly when PPPOX_BOUND
  ppp: synchronize netstats updates

 drivers/net/ppp/ppp_generic.c | 32 +++++++++++++++++---------------
 drivers/net/ppp/pppoe.c       | 10 +++++++++-
 2 files changed, 26 insertions(+), 16 deletions(-)

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2.43.0