diff mbox series

[5.4,19/43] net: dsa: rtl8366: Properly clear member config

Message ID	20200925124726.478471052@linuxfoundation.org
State	Superseded
Headers	show Return-Path: <SRS0=ikAt=DC=vger.kernel.org=stable-owner@kernel.org> From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, stable@vger.kernel.org, Florian Fainelli <f.fainelli@gmail.com>, Linus Walleij <linus.walleij@linaro.org>, Jakub Kicinski <kuba@kernel.org> Subject: [PATCH 5.4 19/43] net: dsa: rtl8366: Properly clear member config Date: Fri, 25 Sep 2020 14:48:31 +0200 Message-Id: <20200925124726.478471052@linuxfoundation.org> In-Reply-To: <20200925124723.575329814@linuxfoundation.org> References: <20200925124723.575329814@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	None \| expand [5.4,02/43] ibmvnic fix NULL tx_pools and rx_tools issue at do_reset [5.4,03/43] ibmvnic: add missing parenthesis in do_reset() [5.4,04/43] kprobes: fix kill kprobe which has been marked as gone [5.4,05/43] mm/thp: fix __split_huge_pmd_locked() for migration PMD [5.4,06/43] act_ife: load meta modules before tcf_idr_check_alloc() [5.4,07/43] bnxt_en: Avoid sending firmware messages when AER error is detected. [5.4,08/43] bnxt_en: Fix NULL ptr dereference crash in bnxt_fw_reset_task() [5.4,09/43] cxgb4: fix memory leak during module unload [5.4,10/43] cxgb4: Fix offset when clearing filter byte counters [5.4,11/43] geneve: add transport ports in route lookup for geneve [5.4,12/43] hdlc_ppp: add range checks in ppp_cp_parse_cr() [5.4,13/43] ip: fix tos reflection in ack and reset packets [5.4,14/43] ipv4: Initialize flowi4_multipath_hash in data path [5.4,15/43] ipv4: Update exception handling for multipath routes via same device [5.4,16/43] ipv6: avoid lockdep issue in fib6_del() [5.4,17/43] net: bridge: br_vlan_get_pvid_rcu() should dereference the VLAN group under RCU [5.4,18/43] net: DCB: Validate DCB_ATTR_DCB_BUFFER argument [5.4,19/43] net: dsa: rtl8366: Properly clear member config [5.4,20/43] net: Fix bridge enslavement failure [5.4,21/43] net: ipv6: fix kconfig dependency warning for IPV6_SEG6_HMAC [5.4,22/43] net/mlx5: Fix FTE cleanup [5.4,23/43] net: sch_generic: aviod concurrent reset and enqueue op for lockless qdisc [5.4,24/43] net: sctp: Fix IPv6 ancestor_size calc in sctp_copy_descendant [5.4,25/43] nfp: use correct define to return NONE fec [5.4,26/43] taprio: Fix allowing too small intervals [5.4,27/43] tipc: Fix memory leak in tipc_group_create_member() [5.4,28/43] tipc: fix shutdown() of connection oriented socket [5.4,29/43] tipc: use skb_unshare() instead in tipc_buf_append() [5.4,30/43] net/mlx5e: Enable adding peer miss rules only if merged eswitch is supported [5.4,31/43] net/mlx5e: TLS, Do not expose FPGA TLS counter if not supported [5.4,32/43] bnxt_en: return proper error codes in bnxt_show_temp [5.4,33/43] bnxt_en: Protect bnxt_set_eee() and bnxt_set_pauseparam() with mutex. [5.4,34/43] net: lantiq: Wake TX queue again [5.4,35/43] net: lantiq: use netif_tx_napi_add() for TX NAPI [5.4,36/43] net: lantiq: Use napi_complete_done() [5.4,37/43] net: lantiq: Disable IRQs only if NAPI gets scheduled [5.4,38/43] net: phy: Avoid NPD upon phy_detach() when driver is unbound [5.4,39/43] net: phy: Do not warn in phy_stop() on PHY_DOWN [5.4,40/43] net: qrtr: check skb_put_padto() return value [5.4,41/43] net: add __must_check to skb_put_padto() [5.4,42/43] mm: memcg: fix memcg reclaim soft lockup [5.4,43/43] iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE

Commit Message

Greg KH Sept. 25, 2020, 12:48 p.m. UTC

From: Linus Walleij <linus.walleij@linaro.org>

[ Upstream commit 4ddcaf1ebb5e4e99240f29d531ee69d4244fe416 ]

When removing a port from a VLAN we are just erasing the
member config for the VLAN, which is wrong: other ports
can be using it.

Just mask off the port and only zero out the rest of the
member config once ports using of the VLAN are removed
from it.

Reported-by: Florian Fainelli <f.fainelli@gmail.com>
Fixes: d8652956cf37 ("net: dsa: realtek-smi: Add Realtek SMI driver")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/dsa/rtl8366.c |   20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff mbox series

Patch

--- a/drivers/net/dsa/rtl8366.c
+++ b/drivers/net/dsa/rtl8366.c
@@ -452,13 +452,19 @@  int rtl8366_vlan_del(struct dsa_switch *
 				return ret;
 
 			if (vid == vlanmc.vid) {
-				/* clear VLAN member configurations */
-				vlanmc.vid = 0;
-				vlanmc.priority = 0;
-				vlanmc.member = 0;
-				vlanmc.untag = 0;
-				vlanmc.fid = 0;
-
+				/* Remove this port from the VLAN */
+				vlanmc.member &= ~BIT(port);
+				vlanmc.untag &= ~BIT(port);
+				/*
+				 * If no ports are members of this VLAN
+				 * anymore then clear the whole member
+				 * config so it can be reused.
+				 */
+				if (!vlanmc.member && vlanmc.untag) {
+					vlanmc.vid = 0;
+					vlanmc.priority = 0;
+					vlanmc.fid = 0;
+				}
 				ret = smi->ops->set_vlan_mc(smi, i, &vlanmc);
 				if (ret) {
 					dev_err(smi->dev,