lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20221114234250.3039889-5-anthony.l.nguyen@intel.com>
Date:   Mon, 14 Nov 2022 15:42:47 -0800
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com
Cc:     Benjamin Mikailenko <benjamin.mikailenko@...el.com>,
        netdev@...r.kernel.org, anthony.l.nguyen@...el.com,
        Gurucharan G <gurucharanx.g@...el.com>
Subject: [PATCH net-next 4/7] ice: Accumulate HW and Netdev statistics over reset

From: Benjamin Mikailenko <benjamin.mikailenko@...el.com>

Resets happen with or without user interaction. For example, incidents
such as TX hang or a reconfiguration of parameters will result in a reset.
During reset, hardware and software statistics were set to zero. This
created an issue for the user where a reset happens in the background,
statistics set to zero, and the user checks statistics expecting them to
be populated.

To ensure this doesn't happen, keep accumulating stats over reset.

1. Remove function calls which reset hardware and netdev statistics.
2. Do not rollover statistics in ice_stat_update40 during reset.

Signed-off-by: Benjamin Mikailenko <benjamin.mikailenko@...el.com>
Tested-by: Gurucharan G <gurucharanx.g@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/ice/ice.h         |  1 +
 drivers/net/ethernet/intel/ice/ice_dcb_lib.c |  3 ++
 drivers/net/ethernet/intel/ice/ice_lib.c     |  7 +++++
 drivers/net/ethernet/intel/ice/ice_main.c    | 30 +++++++++++++++++---
 4 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index f88ee051e71c..74d40a766664 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -373,6 +373,7 @@ struct ice_vsi {
 
 	/* VSI stats */
 	struct rtnl_link_stats64 net_stats;
+	struct rtnl_link_stats64 net_stats_prev;
 	struct ice_eth_stats eth_stats;
 	struct ice_eth_stats eth_stats_prev;
 
diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
index add90e75f05c..01da9389de84 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_lib.c
@@ -874,6 +874,9 @@ void ice_update_dcb_stats(struct ice_pf *pf)
 	prev_ps = &pf->stats_prev;
 	cur_ps = &pf->stats;
 
+	if (ice_is_reset_in_progress(pf->state))
+		pf->stat_prev_loaded = false;
+
 	for (i = 0; i < 8; i++) {
 		ice_stat_update32(hw, GLPRT_PXOFFRXC(port, i),
 				  pf->stat_prev_loaded,
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index a2cfa0c614ce..ffb455e1f3dc 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -1795,11 +1795,15 @@ void ice_update_eth_stats(struct ice_vsi *vsi)
 {
 	struct ice_eth_stats *prev_es, *cur_es;
 	struct ice_hw *hw = &vsi->back->hw;
+	struct ice_pf *pf = vsi->back;
 	u16 vsi_num = vsi->vsi_num;    /* HW absolute index of a VSI */
 
 	prev_es = &vsi->eth_stats_prev;
 	cur_es = &vsi->eth_stats;
 
+	if (ice_is_reset_in_progress(pf->state))
+		vsi->stat_offsets_loaded = false;
+
 	ice_stat_update40(hw, GLV_GORCL(vsi_num), vsi->stat_offsets_loaded,
 			  &prev_es->rx_bytes, &cur_es->rx_bytes);
 
@@ -3304,6 +3308,8 @@ int ice_vsi_rebuild(struct ice_vsi *vsi, bool init_vsi)
 			goto err_vectors;
 
 		ice_vsi_map_rings_to_vectors(vsi);
+
+		vsi->stat_offsets_loaded = false;
 		if (ice_is_xdp_ena_vsi(vsi)) {
 			ret = ice_vsi_determine_xdp_res(vsi);
 			if (ret)
@@ -3340,6 +3346,7 @@ int ice_vsi_rebuild(struct ice_vsi *vsi, bool init_vsi)
 		if (ret)
 			goto err_vectors;
 
+		vsi->stat_offsets_loaded = false;
 		break;
 	case ICE_VSI_CHNL:
 		if (test_bit(ICE_FLAG_RSS_ENA, pf->flags)) {
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index a9fc89aebebe..374465d305bc 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -6397,6 +6397,7 @@ ice_update_vsi_tx_ring_stats(struct ice_vsi *vsi,
  */
 static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
 {
+	struct rtnl_link_stats64 *net_stats, *stats_prev;
 	struct rtnl_link_stats64 *vsi_stats;
 	u64 pkts, bytes;
 	int i;
@@ -6436,10 +6437,28 @@ static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
 
 	rcu_read_unlock();
 
-	vsi->net_stats.tx_packets = vsi_stats->tx_packets;
-	vsi->net_stats.tx_bytes = vsi_stats->tx_bytes;
-	vsi->net_stats.rx_packets = vsi_stats->rx_packets;
-	vsi->net_stats.rx_bytes = vsi_stats->rx_bytes;
+	net_stats = &vsi->net_stats;
+	stats_prev = &vsi->net_stats_prev;
+
+	/* clear prev counters after reset */
+	if (vsi_stats->tx_packets < stats_prev->tx_packets ||
+	    vsi_stats->rx_packets < stats_prev->rx_packets) {
+		stats_prev->tx_packets = 0;
+		stats_prev->tx_bytes = 0;
+		stats_prev->rx_packets = 0;
+		stats_prev->rx_bytes = 0;
+	}
+
+	/* update netdev counters */
+	net_stats->tx_packets += vsi_stats->tx_packets - stats_prev->tx_packets;
+	net_stats->tx_bytes += vsi_stats->tx_bytes - stats_prev->tx_bytes;
+	net_stats->rx_packets += vsi_stats->rx_packets - stats_prev->rx_packets;
+	net_stats->rx_bytes += vsi_stats->rx_bytes - stats_prev->rx_bytes;
+
+	stats_prev->tx_packets = vsi_stats->tx_packets;
+	stats_prev->tx_bytes = vsi_stats->tx_bytes;
+	stats_prev->rx_packets = vsi_stats->rx_packets;
+	stats_prev->rx_bytes = vsi_stats->rx_bytes;
 
 	kfree(vsi_stats);
 }
@@ -6501,6 +6520,9 @@ void ice_update_pf_stats(struct ice_pf *pf)
 	prev_ps = &pf->stats_prev;
 	cur_ps = &pf->stats;
 
+	if (ice_is_reset_in_progress(pf->state))
+		pf->stat_prev_loaded = false;
+
 	ice_stat_update40(hw, GLPRT_GORCL(port), pf->stat_prev_loaded,
 			  &prev_ps->eth.rx_bytes,
 			  &cur_ps->eth.rx_bytes);
-- 
2.35.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ