From patchwork Sat Aug 10 05:43:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakub Kicinski X-Patchwork-Id: 13759428 X-Patchwork-Delegate: kuba@kernel.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 678A445957 for ; Sat, 10 Aug 2024 05:43:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723268606; cv=none; b=IPbx5BMAKKXgoysb97RhGtCoQEKVc0Xwl31/tFoIvVcFxwe6AbiDNnBrf7DKolH4yHB4tgbqDgcaqLcvxfUPjMoS9VlJhNS5VEFhCVV280oX/W+j6C05iPOfhk0pPM0AEEiFN4btjngaWjR7SkGzB+91aw3HCnM9H5OWc6zrivE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723268606; c=relaxed/simple; bh=KkRt3LDFKWg6KlW3a4QqzOS1X8U1zX4vkPzeWuR/d9I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BKog2sh32b7+N0pPpw3SIGm6FLCl8hu+pLt0HbK3NIg5wvdGt6/TEEsTCG5F5lcD5qBDfSxKF9quzrCKxsump85sH2G2JZOQZ0KM3kVjTGk0HQ1Hdyt79bCpuqL6TiLcdXDVGWM2Bgtksax7gID+eXLKbw2a6CapStpld034zTI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uS487n7J; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="uS487n7J" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E80F2C4AF0E; Sat, 10 Aug 2024 05:43:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1723268606; bh=KkRt3LDFKWg6KlW3a4QqzOS1X8U1zX4vkPzeWuR/d9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uS487n7Jx8zITD7Jb6snAFWfY6QdsmVjoA3J/q1durF1chBQTOSAveIE/Owh2sRRm tW6M94QQ5GbzeleigCgTTEryy/VVz66JBfmOY+NWtNoc34GLXPYz/03Hfddnx91lc4 Kr913B+6dSkF5KSjzLxcrZfMBgUdniZRyq81iiTFvZ2U4mg+auHaLtSDlJl4YPYROc xo5fRR+h9+fqYQYubPeKVyYOo3et3AFtdG1VG9EYJdqXmHmOuiVA225B6R/7GQM394 qsQoh64+rONCTsZ71S59UWpeqgJgUugUxHPI3VchnjijVXQ8tzYk4C/yBfKz60IVvt pB4+iObkFGunQ== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, alexanderduyck@fb.com, jdamato@fastly.com, Jakub Kicinski Subject: [PATCH net-next v3 1/2] eth: fbnic: add basic rtnl stats Date: Fri, 9 Aug 2024 22:43:21 -0700 Message-ID: <20240810054322.2766421-2-kuba@kernel.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240810054322.2766421-1-kuba@kernel.org> References: <20240810054322.2766421-1-kuba@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org Count packets, bytes and drop on the datapath, and report to the user. Since queues are completely freed when the device is down - accumulate the stats in the main netdev struct. This means that per-queue stats will only report values since last reset (per qstat recommendation). Reviewed-by: Joe Damato Signed-off-by: Jakub Kicinski --- v3: - add u64_stats_init() v2: - drop duplicated check --- .../net/ethernet/meta/fbnic/fbnic_netdev.c | 69 +++++++++++++++++++ .../net/ethernet/meta/fbnic/fbnic_netdev.h | 3 + drivers/net/ethernet/meta/fbnic/fbnic_txrx.c | 51 +++++++++++++- drivers/net/ethernet/meta/fbnic/fbnic_txrx.h | 10 +++ 4 files changed, 132 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c b/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c index b7ce6da68543..a048e4a617eb 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_netdev.c @@ -316,6 +316,74 @@ void fbnic_clear_rx_mode(struct net_device *netdev) __dev_mc_unsync(netdev, NULL); } +static void fbnic_get_stats64(struct net_device *dev, + struct rtnl_link_stats64 *stats64) +{ + u64 tx_bytes, tx_packets, tx_dropped = 0; + u64 rx_bytes, rx_packets, rx_dropped = 0; + struct fbnic_net *fbn = netdev_priv(dev); + struct fbnic_queue_stats *stats; + unsigned int start, i; + + stats = &fbn->tx_stats; + + tx_bytes = stats->bytes; + tx_packets = stats->packets; + tx_dropped = stats->dropped; + + stats64->tx_bytes = tx_bytes; + stats64->tx_packets = tx_packets; + stats64->tx_dropped = tx_dropped; + + for (i = 0; i < fbn->num_tx_queues; i++) { + struct fbnic_ring *txr = fbn->tx[i]; + + if (!txr) + continue; + + stats = &txr->stats; + do { + start = u64_stats_fetch_begin(&stats->syncp); + tx_bytes = stats->bytes; + tx_packets = stats->packets; + tx_dropped = stats->dropped; + } while (u64_stats_fetch_retry(&stats->syncp, start)); + + stats64->tx_bytes += tx_bytes; + stats64->tx_packets += tx_packets; + stats64->tx_dropped += tx_dropped; + } + + stats = &fbn->rx_stats; + + rx_bytes = stats->bytes; + rx_packets = stats->packets; + rx_dropped = stats->dropped; + + stats64->rx_bytes = rx_bytes; + stats64->rx_packets = rx_packets; + stats64->rx_dropped = rx_dropped; + + for (i = 0; i < fbn->num_rx_queues; i++) { + struct fbnic_ring *rxr = fbn->rx[i]; + + if (!rxr) + continue; + + stats = &rxr->stats; + do { + start = u64_stats_fetch_begin(&stats->syncp); + rx_bytes = stats->bytes; + rx_packets = stats->packets; + rx_dropped = stats->dropped; + } while (u64_stats_fetch_retry(&stats->syncp, start)); + + stats64->rx_bytes += rx_bytes; + stats64->rx_packets += rx_packets; + stats64->rx_dropped += rx_dropped; + } +} + static const struct net_device_ops fbnic_netdev_ops = { .ndo_open = fbnic_open, .ndo_stop = fbnic_stop, @@ -324,6 +392,7 @@ static const struct net_device_ops fbnic_netdev_ops = { .ndo_features_check = fbnic_features_check, .ndo_set_mac_address = fbnic_set_mac, .ndo_set_rx_mode = fbnic_set_rx_mode, + .ndo_get_stats64 = fbnic_get_stats64, }; void fbnic_reset_queues(struct fbnic_net *fbn, diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_netdev.h b/drivers/net/ethernet/meta/fbnic/fbnic_netdev.h index 6bc0ebeb8182..60199e634468 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_netdev.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_netdev.h @@ -40,6 +40,9 @@ struct fbnic_net { u32 rss_key[FBNIC_RPC_RSS_KEY_DWORD_LEN]; u32 rss_flow_hash[FBNIC_NUM_HASH_OPT]; + /* Storage for stats after ring destruction */ + struct fbnic_queue_stats tx_stats; + struct fbnic_queue_stats rx_stats; u64 link_down_events; struct list_head napis; diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c index 0ed4c9fff5d8..4d0406af297f 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c @@ -273,6 +273,9 @@ fbnic_xmit_frame_ring(struct sk_buff *skb, struct fbnic_ring *ring) err_free: dev_kfree_skb_any(skb); err_count: + u64_stats_update_begin(&ring->stats.syncp); + ring->stats.dropped++; + u64_stats_update_end(&ring->stats.syncp); return NETDEV_TX_OK; } @@ -363,10 +366,19 @@ static void fbnic_clean_twq0(struct fbnic_napi_vector *nv, int napi_budget, txq = txring_txq(nv->napi.dev, ring); if (unlikely(discard)) { + u64_stats_update_begin(&ring->stats.syncp); + ring->stats.dropped += total_packets; + u64_stats_update_end(&ring->stats.syncp); + netdev_tx_completed_queue(txq, total_packets, total_bytes); return; } + u64_stats_update_begin(&ring->stats.syncp); + ring->stats.bytes += total_bytes; + ring->stats.packets += total_packets; + u64_stats_update_end(&ring->stats.syncp); + netif_txq_completed_wake(txq, total_packets, total_bytes, fbnic_desc_unused(ring), FBNIC_TX_DESC_WAKEUP); @@ -730,12 +742,12 @@ static bool fbnic_rcd_metadata_err(u64 rcd) static int fbnic_clean_rcq(struct fbnic_napi_vector *nv, struct fbnic_q_triad *qt, int budget) { + unsigned int packets = 0, bytes = 0, dropped = 0; struct fbnic_ring *rcq = &qt->cmpl; struct fbnic_pkt_buff *pkt; s32 head0 = -1, head1 = -1; __le64 *raw_rcd, done; u32 head = rcq->head; - u64 packets = 0; done = (head & (rcq->size_mask + 1)) ? cpu_to_le64(FBNIC_RCD_DONE) : 0; raw_rcd = &rcq->desc[head & rcq->size_mask]; @@ -780,9 +792,11 @@ static int fbnic_clean_rcq(struct fbnic_napi_vector *nv, fbnic_populate_skb_fields(nv, rcd, skb, qt); packets++; + bytes += skb->len; napi_gro_receive(&nv->napi, skb); } else { + dropped++; fbnic_put_pkt_buff(nv, pkt, 1); } @@ -799,6 +813,14 @@ static int fbnic_clean_rcq(struct fbnic_napi_vector *nv, } } + u64_stats_update_begin(&rcq->stats.syncp); + rcq->stats.packets += packets; + rcq->stats.bytes += bytes; + /* Re-add ethernet header length (removed in fbnic_build_skb) */ + rcq->stats.bytes += ETH_HLEN * packets; + rcq->stats.dropped += dropped; + u64_stats_update_end(&rcq->stats.syncp); + /* Unmap and free processed buffers */ if (head0 >= 0) fbnic_clean_bdq(nv, budget, &qt->sub0, head0); @@ -865,12 +887,36 @@ static irqreturn_t fbnic_msix_clean_rings(int __always_unused irq, void *data) return IRQ_HANDLED; } +static void fbnic_aggregate_ring_rx_counters(struct fbnic_net *fbn, + struct fbnic_ring *rxr) +{ + struct fbnic_queue_stats *stats = &rxr->stats; + + /* Capture stats from queues before dissasociating them */ + fbn->rx_stats.bytes += stats->bytes; + fbn->rx_stats.packets += stats->packets; + fbn->rx_stats.dropped += stats->dropped; +} + +static void fbnic_aggregate_ring_tx_counters(struct fbnic_net *fbn, + struct fbnic_ring *txr) +{ + struct fbnic_queue_stats *stats = &txr->stats; + + /* Capture stats from queues before dissasociating them */ + fbn->tx_stats.bytes += stats->bytes; + fbn->tx_stats.packets += stats->packets; + fbn->tx_stats.dropped += stats->dropped; +} + static void fbnic_remove_tx_ring(struct fbnic_net *fbn, struct fbnic_ring *txr) { if (!(txr->flags & FBNIC_RING_F_STATS)) return; + fbnic_aggregate_ring_tx_counters(fbn, txr); + /* Remove pointer to the Tx ring */ WARN_ON(fbn->tx[txr->q_idx] && fbn->tx[txr->q_idx] != txr); fbn->tx[txr->q_idx] = NULL; @@ -882,6 +928,8 @@ static void fbnic_remove_rx_ring(struct fbnic_net *fbn, if (!(rxr->flags & FBNIC_RING_F_STATS)) return; + fbnic_aggregate_ring_rx_counters(fbn, rxr); + /* Remove pointer to the Rx ring */ WARN_ON(fbn->rx[rxr->q_idx] && fbn->rx[rxr->q_idx] != rxr); fbn->rx[rxr->q_idx] = NULL; @@ -974,6 +1022,7 @@ static int fbnic_alloc_nv_page_pool(struct fbnic_net *fbn, static void fbnic_ring_init(struct fbnic_ring *ring, u32 __iomem *doorbell, int q_idx, u8 flags) { + u64_stats_init(&ring->stats.syncp); ring->doorbell = doorbell; ring->q_idx = q_idx; ring->flags = flags; diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.h b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.h index 4a206c0e7192..2f91f68d11d5 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.h @@ -7,6 +7,7 @@ #include #include #include +#include #include struct fbnic_net; @@ -51,6 +52,13 @@ struct fbnic_pkt_buff { u16 nr_frags; }; +struct fbnic_queue_stats { + u64 packets; + u64 bytes; + u64 dropped; + struct u64_stats_sync syncp; +}; + /* Pagecnt bias is long max to reserve the last bit to catch overflow * cases where if we overcharge the bias it will flip over to be negative. */ @@ -77,6 +85,8 @@ struct fbnic_ring { u32 head, tail; /* Head/Tail of ring */ + struct fbnic_queue_stats stats; + /* Slow path fields follow */ dma_addr_t dma; /* Phys addr of descriptor memory */ size_t size; /* Size of descriptor ring in memory */