[PATCH net-next 1/9] eth: bnxt: gather and report HW-GRO stats
From: Jakub Kicinski <kuba@kernel.org>
Date: 2026-02-05 22:07:22
Also in:
linux-kselftest
Subsystem:
broadcom bnxt_en 50 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Michael Chan, Pavan Chebbi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Count and report HW-GRO stats as seen by the kernel. The device stats for GRO seem to not reflect the reality, perhaps they count sessions which did not actually result in any aggregation. Also they count wire packets, so we have to count super-frames, anyway. Signed-off-by: Jakub Kicinski <kuba@kernel.org> --- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 4 ++++ drivers/net/ethernet/broadcom/bnxt/bnxt.c | 17 +++++++++++++++-- 2 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index f036ef60230b..b2efdbdd1356 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h@@ -1128,6 +1128,8 @@ struct bnxt_rx_sw_stats { u64 rx_buf_errors; u64 rx_oom_discards; u64 rx_netpoll_discards; + u64 rx_hw_gro_packets; + u64 rx_hw_gro_wire_packets; }; struct bnxt_tx_sw_stats {
@@ -1151,6 +1153,8 @@ struct bnxt_total_ring_err_stats { u64 rx_total_oom_discards; u64 rx_total_netpoll_discards; u64 rx_total_ring_discards; + u64 rx_total_hw_gro_packets; + u64 rx_total_hw_gro_wire_packets; u64 tx_total_resets; u64 tx_total_ring_discards; u64 total_missed_irqs;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 466e0fc6141f..4a4145f138f9 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c@@ -1804,7 +1804,8 @@ static inline struct sk_buff *bnxt_gro_skb(struct bnxt *bp, struct bnxt_tpa_info *tpa_info, struct rx_tpa_end_cmp *tpa_end, struct rx_tpa_end_cmp_ext *tpa_end1, - struct sk_buff *skb) + struct sk_buff *skb, + struct bnxt_rx_sw_stats *rx_stats) { #ifdef CONFIG_INET int payload_off;
@@ -1814,6 +1815,11 @@ static inline struct sk_buff *bnxt_gro_skb(struct bnxt *bp, if (segs == 1) return skb; + if (bp->dev->features & NETIF_F_GRO_HW) { + rx_stats->rx_hw_gro_packets++; + rx_stats->rx_hw_gro_wire_packets += segs; + } + NAPI_GRO_CB(skb)->count = segs; skb_shinfo(skb)->gso_size = le32_to_cpu(tpa_end1->rx_tpa_end_cmp_seg_len);
@@ -1987,7 +1993,8 @@ static inline struct sk_buff *bnxt_tpa_end(struct bnxt *bp, } if (gro) - skb = bnxt_gro_skb(bp, tpa_info, tpa_end, tpa_end1, skb); + skb = bnxt_gro_skb(bp, tpa_info, tpa_end, tpa_end1, skb, + &cpr->sw_stats->rx); return skb; }
@@ -13492,6 +13499,8 @@ static void bnxt_get_one_ring_err_stats(struct bnxt *bp, stats->rx_total_netpoll_discards += sw_stats->rx.rx_netpoll_discards; stats->rx_total_ring_discards += BNXT_GET_RING_STATS64(hw_stats, rx_discard_pkts); + stats->rx_total_hw_gro_packets += sw_stats->rx.rx_hw_gro_packets; + stats->rx_total_hw_gro_wire_packets += sw_stats->rx.rx_hw_gro_wire_packets; stats->tx_total_resets += sw_stats->tx.tx_resets; stats->tx_total_ring_discards += BNXT_GET_RING_STATS64(hw_stats, tx_discard_pkts);
@@ -15931,6 +15940,8 @@ static void bnxt_get_queue_stats_rx(struct net_device *dev, int i, stats->bytes += BNXT_GET_RING_STATS64(sw, rx_bcast_bytes); stats->alloc_fail = cpr->sw_stats->rx.rx_oom_discards; + stats->hw_gro_packets = cpr->sw_stats->rx.rx_hw_gro_packets; + stats->hw_gro_wire_packets = cpr->sw_stats->rx.rx_hw_gro_wire_packets; } static void bnxt_get_queue_stats_tx(struct net_device *dev, int i,
@@ -15966,6 +15977,8 @@ static void bnxt_get_base_stats(struct net_device *dev, rx->packets = bp->net_stats_prev.rx_packets; rx->bytes = bp->net_stats_prev.rx_bytes; rx->alloc_fail = bp->ring_err_stats_prev.rx_total_oom_discards; + rx->hw_gro_packets = bp->ring_err_stats_prev.rx_total_hw_gro_packets; + rx->hw_gro_wire_packets = bp->ring_err_stats_prev.rx_total_hw_gro_wire_packets; tx->packets = bp->net_stats_prev.tx_packets; tx->bytes = bp->net_stats_prev.tx_bytes;
--
2.53.0