From: Sasha Levin <sashal@kernel•org>
To: linux-kernel@vger•kernel.org, stable@vger•kernel.org
Cc: Eric Dumazet <edumazet@google•com>,
RENARD Pierre-Francois <pfrenard@gmail•com>,
Stefan Wahren <stefan.wahren@i2se•com>,
Woojung Huh <woojung.huh@microchip•com>,
Microchip Linux Driver Support <UNGLinuxDriver@microchip•com>,
"David S . Miller" <davem@davemloft•net>,
Sasha Levin <sashal@kernel•org>,
linux-usb@vger•kernel.org, netdev@vger•kernel.org
Subject: [PATCH AUTOSEL 4.19 35/56] net: usb: lan78xx: limit size of local TSO packets
Date: Fri, 24 Jan 2020 09:19:51 -0500 [thread overview]
Message-ID: <20200124142012.29752-35-sashal@kernel.org> (raw)
In-Reply-To: <20200124142012.29752-1-sashal@kernel.org>
From: Eric Dumazet <edumazet@google•com>
[ Upstream commit f8d7408a4d7f60f8b2df0f81decdc882dd9c20dc ]
lan78xx_tx_bh() makes sure to not exceed MAX_SINGLE_PACKET_SIZE
bytes in the aggregated packets it builds, but does
nothing to prevent large GSO packets being submitted.
Pierre-Francois reported various hangs when/if TSO is enabled.
For localy generated packets, we can use netif_set_gso_max_size()
to limit the size of TSO packets.
Note that forwarded packets could still hit the issue,
so a complete fix might require implementing .ndo_features_check
for this driver, forcing a software segmentation if the size
of the TSO packet exceeds MAX_SINGLE_PACKET_SIZE.
Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Signed-off-by: Eric Dumazet <edumazet@google•com>
Reported-by: RENARD Pierre-Francois <pfrenard@gmail•com>
Tested-by: RENARD Pierre-Francois <pfrenard@gmail•com>
Cc: Stefan Wahren <stefan.wahren@i2se•com>
Cc: Woojung Huh <woojung.huh@microchip•com>
Cc: Microchip Linux Driver Support <UNGLinuxDriver@microchip•com>
Signed-off-by: David S. Miller <davem@davemloft•net>
Signed-off-by: Sasha Levin <sashal@kernel•org>
---
drivers/net/usb/lan78xx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index 42715520c0706..7d708aeb45763 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -3769,6 +3769,7 @@ static int lan78xx_probe(struct usb_interface *intf,
/* MTU range: 68 - 9000 */
netdev->max_mtu = MAX_SINGLE_PACKET_SIZE;
+ netif_set_gso_max_size(netdev, MAX_SINGLE_PACKET_SIZE - MAX_HEADER);
dev->ep_blkin = (intf->cur_altsetting)->endpoint + 0;
dev->ep_blkout = (intf->cur_altsetting)->endpoint + 1;
--
2.20.1
next prev parent reply other threads:[~2020-01-24 14:29 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-24 14:19 [PATCH AUTOSEL 4.19 01/56] batman-adv: Fix DAT candidate selection on little endian systems Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 14/56] mac80211: mesh: restrict airtime metric to peered established plinks Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 20/56] ixgbevf: Remove limit of 10 entries for unicast filter list Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 21/56] ixgbe: Fix calculation of queue with VFs and flow director on interface flap Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 22/56] igb: Fix SGMII SFP module discovery for 100FX/LX Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 23/56] sh_eth: check sh_eth_cpu_data::dual_port when dumping registers Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 29/56] netfilter: fix a use-after-free in mtype_destroy() Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 30/56] netfilter: arp_tables: init netns pointer in xt_tgdtor_param struct Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 31/56] qmi_wwan: Add support for Quectel RM500Q Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 34/56] ptp: free ptp device pin descriptors properly Sasha Levin
2020-01-24 14:19 ` Sasha Levin [this message]
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 36/56] r8152: add missing endpoint sanity check Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 37/56] wireless: fix enabling channel 12 for custom regulatory domain Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 38/56] cfg80211: Fix radar event during another phy CAC Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 39/56] mac80211: Fix TKIP replay protection immediately after key setup Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 40/56] wireless: wext: avoid gcc -O3 warning Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 41/56] cfg80211: check for set_wiphy_params Sasha Levin
2020-01-24 14:19 ` [PATCH AUTOSEL 4.19 43/56] mlxsw: spectrum: Wipe xstats.backlog of down ports Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 44/56] hv_netvsc: Fix memory leak when removing rndis device Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 45/56] bpf: Fix incorrect verifier simulation of ARSH under ALU32 Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 46/56] net/wan/fsl_ucc_hdlc: fix out of bounds write on array utdm_info Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 48/56] netfilter: nf_tables: store transaction list locally while requesting module Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 49/56] netfilter: nft_tunnel: fix null-attribute check Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 50/56] netfilter: nft_tunnel: ERSPAN_VERSION must not be null Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 51/56] netfilter: nf_tables: remove WARN and add NLA_STRING upper limits Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 52/56] netfilter: nf_tables: fix flowtable list del corruption Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 53/56] net: hns: fix soft lockup when there is not enough memory Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 54/56] net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec Sasha Levin
2020-01-24 14:20 ` [PATCH AUTOSEL 4.19 55/56] bnxt_en: Fix ipv6 RFS filter matching logic Sasha Levin
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