pppoe: encapsulate statistics counters

Group the PPPoE statistics in struct pppoe_stat_t and keep the storage private to pppoe.c instead of exporting writable counter globals through pppoe.h.  The CLI now reads a snapshot with pppoe_stat_get(), while the packet/control paths update the counters through the PPPoE-owned storage using relaxed atomic operations.

Convert the PPPoE SNMP starting/active scalars from watched raw pointers to scalar handlers.  This removes the old pppoe_get_stat() pointer escape hatch and makes SNMP read the counters through pppoe_stat_starting() and pppoe_stat_active(), so the synchronization policy is applied consistently outside the PPPoE module.

This also fixes the long-standing PPPoE starting counter behavior.  PPPoE used to expose starting in the CLI and ACCEL-PPP-MIB, but never updated it, so it always reported zero.  Track a per-connection ppp_starting state, increment starting when the controller begins channel setup, move the session from starting to active after establish_ppp() succeeds, and decrement starting on setup failure before PPP becomes active.  This matches the state accounting used by the other PPP controllers.

Signed-off-by: Denys Fedoryshchenko <denys.f@collabora.com>

0 files changed, 0 insertions, 0 deletions