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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Subject: [PATCH net v3 4/4] octeon_ep_vf: remove firmware stats fetch in ndo_get_stats64 Date: Wed, 18 Dec 2024 03:51:11 -0800 Message-ID: <20241218115111.2407958-5-srasheed@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241218115111.2407958-1-srasheed@marvell.com> References: <20241218115111.2407958-1-srasheed@marvell.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-GUID: 3uwPDK3mVs22R-hvh3sAWT-3_Dx4aWRC X-Proofpoint-ORIG-GUID: 3uwPDK3mVs22R-hvh3sAWT-3_Dx4aWRC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Patchwork-Delegate: kuba@kernel.org The per queue stats are available already and are retrieved from register reads during ndo_get_stats64. The firmware stats fetch call that happens in ndo_get_stats64() is currently not required The warn log is given below: [ 123.316837] ------------[ cut here ]------------ [ 123.316840] Voluntary context switch within RCU read-side critical section! [ 123.316917] pc : rcu_note_context_switch+0x2e4/0x300 [ 123.316919] lr : rcu_note_context_switch+0x2e4/0x300 [ 123.316947] Call trace: [ 123.316949] rcu_note_context_switch+0x2e4/0x300 [ 123.316952] __schedule+0x84/0x584 [ 123.316955] schedule+0x38/0x90 [ 123.316956] schedule_timeout+0xa0/0x1d4 [ 123.316959] octep_send_mbox_req+0x190/0x230 [octeon_ep] [ 123.316966] octep_ctrl_net_get_if_stats+0x78/0x100 [octeon_ep] [ 123.316970] octep_get_stats64+0xd4/0xf0 [octeon_ep] [ 123.316975] dev_get_stats+0x4c/0x114 [ 123.316977] dev_seq_printf_stats+0x3c/0x11c [ 123.316980] dev_seq_show+0x1c/0x40 [ 123.316982] seq_read_iter+0x3cc/0x4e0 [ 123.316985] seq_read+0xc8/0x110 [ 123.316987] proc_reg_read+0x9c/0xec [ 123.316990] vfs_read+0xc8/0x2ec [ 123.316993] ksys_read+0x70/0x100 [ 123.316995] __arm64_sys_read+0x20/0x30 [ 123.316997] invoke_syscall.constprop.0+0x7c/0xd0 [ 123.317000] do_el0_svc+0xb4/0xd0 [ 123.317002] el0_svc+0xe8/0x1f4 [ 123.317005] el0t_64_sync_handler+0x134/0x150 [ 123.317006] el0t_64_sync+0x17c/0x180 [ 123.317008] ---[ end trace 63399811432ab69b ]--- Fixes: c3fad23cdc06 ("octeon_ep_vf: add support for ndo ops") Signed-off-by: Shinas Rasheed --- V3: - Added warn log that happened due to rcu_read_lock in commit message V2: https://lore.kernel.org/all/20241216075842.2394606-5-srasheed@marvell.com/ - No changes V1: https://lore.kernel.org/all/20241203072130.2316913-5-srasheed@marvell.com/ drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c index e6253f85b623..75dd3bd2b9ba 100644 --- a/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c +++ b/drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c @@ -800,14 +800,6 @@ static void octep_vf_get_stats64(struct net_device *netdev, stats->tx_bytes = tx_bytes; stats->rx_packets = rx_packets; stats->rx_bytes = rx_bytes; - if (!octep_vf_get_if_stats(oct)) { - stats->multicast = oct->iface_rx_stats.mcast_pkts; - stats->rx_errors = oct->iface_rx_stats.err_pkts; - stats->rx_dropped = oct->iface_rx_stats.dropped_pkts_fifo_full + - oct->iface_rx_stats.err_pkts; - stats->rx_missed_errors = oct->iface_rx_stats.dropped_pkts_fifo_full; - stats->tx_dropped = oct->iface_tx_stats.dropped; - } } /**