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net: dsa: change dsa_ptr for a dsa_port

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With DSA, a master net device (CPU facing interface) has a dsa_ptr
pointer to which hangs a dsa_switch_tree. This is not correct because a
master interface is wired to a dedicated switch port, and because we can
theoretically have several master interfaces pointing to several CPU
ports of the same switch fabric.

Change the master interface's dsa_ptr for the CPU dsa_port pointer.
This is a step towards supporting multiple CPU ports.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot
2017-09-29 17:19:20 -04:00
committed by David S. Miller
parent 3e41f93b35
commit 2f657a6004
6 changed files with 14 additions and 18 deletions
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2
net/dsa/legacy.c
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@@ -607,7 +607,7 @@ static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev,
* sent to the tag format's receive function.
*/
wmb();
dev->dsa_ptr = dst;
dev->dsa_ptr = dst->cpu_dp;
return dsa_master_ethtool_setup(dst->cpu_dp->netdev);
}