diff options
| author | Kevin Bowling <kbowling@FreeBSD.org> | 2026-08-11 18:59:19 +0000 |
|---|---|---|
| committer | Kevin Bowling <kbowling@FreeBSD.org> | 2026-08-11 20:49:56 +0000 |
| commit | eff55e5e098b85855335d8df151787b6b034973f (patch) | |
| tree | f1d0c96ceb73f559ecb219c5606784012b398df1 | |
| parent | d1c20195c0fae27b6b1d526c03d8844f200e5c86 (diff) | |
e1000: Export EEE Low Power Idle counters
Accumulate the clear-on-read transmit and receive LPI event counters
on EEE capable PCH and I350 family devices. Expose the 64-bit totals
under the per-device eee sysctl node.
MFC after: 2 weeks
| -rw-r--r-- | sys/dev/e1000/if_em.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c index 2a7b3f4e3bfb..5a02514a89e3 100644 --- a/sys/dev/e1000/if_em.c +++ b/sys/dev/e1000/if_em.c @@ -462,6 +462,7 @@ static void em_initialize_vf_stats(struct e1000_softc *); static void em_rebase_vf_stats(struct e1000_softc *); static void em_update_vf_stats_counters(struct e1000_softc *); static void em_add_hw_stats(struct e1000_softc *); +static bool em_mac_has_eee(enum e1000_mac_type); static int em_if_set_promisc(if_ctx_t, int); static bool em_if_defer_promisc(struct e1000_softc *); static bool em_if_vlan_filter_capable(if_ctx_t); @@ -5642,6 +5643,12 @@ em_update_stats_counters(struct e1000_softc *sc) stats->mptc += E1000_READ_REG(&sc->hw, E1000_MPTC); stats->bptc += E1000_READ_REG(&sc->hw, E1000_BPTC); + /* TLPIC and RLPIC are clear-on-read. */ + if (em_mac_has_eee(sc->hw.mac.type)) { + stats->tlpic += E1000_READ_REG(&sc->hw, E1000_TLPIC); + stats->rlpic += E1000_READ_REG(&sc->hw, E1000_RLPIC); + } + /* Interrupt Counts */ stats->iac += E1000_READ_REG(&sc->hw, E1000_IAC); @@ -5670,6 +5677,14 @@ em_update_stats_counters(struct e1000_softc *sc) } } +static bool +em_mac_has_eee(enum e1000_mac_type type) +{ + + return ((type >= e1000_pch2lan && type < e1000_82575) || + (type >= e1000_i350 && type <= e1000_i211)); +} + static void em_initialize_vf_stats(struct e1000_softc *sc) { @@ -6059,6 +6074,19 @@ em_add_hw_stats(struct e1000_softc *sc) } stats = &sc->ustats.stats; + if (em_mac_has_eee(sc->hw.mac.type)) { + struct sysctl_oid *eee_node; + struct sysctl_oid_list *eee_list; + + eee_node = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "eee", + CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, + "Energy Efficient Ethernet statistics"); + eee_list = SYSCTL_CHILDREN(eee_node); + SYSCTL_ADD_UQUAD(ctx, eee_list, OID_AUTO, "tx_lpi_count", + CTLFLAG_RD, &stats->tlpic, "TX LPI event count"); + SYSCTL_ADD_UQUAD(ctx, eee_list, OID_AUTO, "rx_lpi_count", + CTLFLAG_RD, &stats->rlpic, "RX LPI event count"); + } SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, "excess_coll", CTLFLAG_RD, &stats->ecol, |