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DSA needs to simulate master tracking events when a binding is first with a DSA master established and torn down, in order to give drivers the simplifying guarantee that ->master_state_change calls are made only when the master's readiness state to pass traffic changes. master_state_change() provide a operational bool that DSA driver can use to understand if DSA master is operational or not. To avoid races, we need to block the reception of NETDEV_UP/NETDEV_CHANGE/NETDEV_GOING_DOWN events in the netdev notifier chain while we are changing the master's dev->dsa_ptr (this changes what netdev_uses_dsa(dev) reports). The dsa_master_setup() and dsa_master_teardown() functions optionally require the rtnl_mutex to be held, if the tagger needs the master to be promiscuous, these functions call dev_set_promiscuity(). Move the rtnl_lock() from that function and make it top-level. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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.. | ||
dsa2.c | ||
dsa_priv.h | ||
dsa.c | ||
Kconfig | ||
Makefile | ||
master.c | ||
port.c | ||
slave.c | ||
switch.c | ||
tag_8021q.c | ||
tag_ar9331.c | ||
tag_brcm.c | ||
tag_dsa.c | ||
tag_gswip.c | ||
tag_hellcreek.c | ||
tag_ksz.c | ||
tag_lan9303.c | ||
tag_mtk.c | ||
tag_ocelot_8021q.c | ||
tag_ocelot.c | ||
tag_qca.c | ||
tag_rtl4_a.c | ||
tag_rtl8_4.c | ||
tag_sja1105.c | ||
tag_trailer.c | ||
tag_xrs700x.c |