diff mbox series

[RFC,net-next,06/12] net: dsa: only bring down user ports assigned to a given DSA master

Message ID 20220523104256.3556016-7-olteanv@gmail.com (mailing list archive)
State RFC
Delegated to: Netdev Maintainers
Headers show
Series DSA changes for multiple CPU ports (part 3) | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 3 maintainers not CCed: davem@davemloft.net pabeni@redhat.com edumazet@google.com
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 9 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Vladimir Oltean May 23, 2022, 10:42 a.m. UTC 
From: Vladimir Oltean <vladimir.oltean@nxp.com>

This is an adaptation of commit c0a8a9c27493 ("net: dsa: automatically
bring user ports down when master goes down") for multiple DSA masters.
When a DSA master goes down, only the user ports under its control
should go down too, the others can still send/receive traffic.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
 net/dsa/slave.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Florian Fainelli May 23, 2022, 5:59 p.m. UTC | #1 
On 5/23/22 03:42, Vladimir Oltean wrote:
> From: Vladimir Oltean <vladimir.oltean@nxp.com>
> 
> This is an adaptation of commit c0a8a9c27493 ("net: dsa: automatically
> bring user ports down when master goes down") for multiple DSA masters.
> When a DSA master goes down, only the user ports under its control
> should go down too, the others can still send/receive traffic.
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
diff mbox series

Patch

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 0455fb3cf03d..c0be747c66ac 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2848,6 +2848,9 @@  static int dsa_slave_netdevice_event(struct notifier_block *nb,
 			if (!dsa_port_is_user(dp))
 				continue;
 
+			if (dp->cpu_dp != cpu_dp)
+				continue;
+
 			list_add(&dp->slave->close_list, &close_list);
 		}