linux-kernel - [PATCH net-next] e1000e: Be drop monitor friendly

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-next>] [day] [month] [year] [list]

Date:   Thu, 24 Aug 2017 18:36:50 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     netdev@...r.kernel.org
Cc:     edumazet@...il.com, davem@...emloft.net,
        Florian Fainelli <f.fainelli@...il.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        intel-wired-lan@...ts.osuosl.org (moderated list:INTEL ETHERNET DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net-next] e1000e: Be drop monitor friendly

e1000_put_txbuf() cleans up the successfully transmitted TX packets,
e1000e_tx_hwtstamp_work() also does the successfully completes the
timestamped TX packets, e1000_clean_rx_ring() cleans up the RX ring and
e1000_remove() cleans up the timestampted packets. None of these
functions should be reporting dropped packets, so make them use
dev_consume_skb*() to be drop monitor friendly.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 327dfe5bedc0..91303544975a 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -1085,7 +1085,7 @@ static void e1000_put_txbuf(struct e1000_ring *tx_ring,
 		buffer_info->dma = 0;
 	}
 	if (buffer_info->skb) {
-		dev_kfree_skb_any(buffer_info->skb);
+		dev_consume_skb_any(buffer_info->skb);
 		buffer_info->skb = NULL;
 	}
 	buffer_info->time_stamp = 0;
@@ -1199,7 +1199,7 @@ static void e1000e_tx_hwtstamp_work(struct work_struct *work)
 		wmb(); /* force write prior to skb_tstamp_tx */
 
 		skb_tstamp_tx(skb, &shhwtstamps);
-		dev_kfree_skb_any(skb);
+		dev_consume_skb_any(skb);
 	} else if (time_after(jiffies, adapter->tx_hwtstamp_start
 			      + adapter->tx_timeout_factor * HZ)) {
 		dev_kfree_skb_any(adapter->tx_hwtstamp_skb);
@@ -1716,7 +1716,7 @@ static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
 		}
 
 		if (buffer_info->skb) {
-			dev_kfree_skb(buffer_info->skb);
+			dev_consume_skb(buffer_info->skb);
 			buffer_info->skb = NULL;
 		}
 
@@ -1734,7 +1734,7 @@ static void e1000_clean_rx_ring(struct e1000_ring *rx_ring)
 
 	/* there also may be some cached data from a chained receive */
 	if (rx_ring->rx_skb_top) {
-		dev_kfree_skb(rx_ring->rx_skb_top);
+		dev_consume_skb(rx_ring->rx_skb_top);
 		rx_ring->rx_skb_top = NULL;
 	}
 
@@ -7411,7 +7411,7 @@ static void e1000_remove(struct pci_dev *pdev)
 	if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) {
 		cancel_work_sync(&adapter->tx_hwtstamp_work);
 		if (adapter->tx_hwtstamp_skb) {
-			dev_kfree_skb_any(adapter->tx_hwtstamp_skb);
+			dev_consume_skb_any(adapter->tx_hwtstamp_skb);
 			adapter->tx_hwtstamp_skb = NULL;
 		}
 	}
-- 
2.9.3