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net: build all switchdev drivers as modules when the bridge is a module
Currently, all drivers depend on the bool CONFIG_NET_SWITCHDEV, but only
the drivers that call some sort of function exported by the bridge, like
br_vlan_enabled() or whatever, have an extra dependency on CONFIG_BRIDGE.
Since the blamed commit, all switchdev drivers have a functional
dependency upon switchdev_bridge_port_{,un}offload(), which is a pair of
functions exported by the bridge module and not by the bridge-independent
part of CONFIG_NET_SWITCHDEV.
Problems appear when we have:
CONFIG_BRIDGE=m
CONFIG_NET_SWITCHDEV=y
CONFIG_TI_CPSW_SWITCHDEV=y
because cpsw, am65_cpsw and sparx5 will then be built-in but they will
call a symbol exported by a loadable module. This is not possible and
will result in the following build error:
drivers/net/ethernet/ti/cpsw_new.o: in function `cpsw_netdevice_event':
drivers/net/ethernet/ti/cpsw_new.c:1520: undefined reference to
`switchdev_bridge_port_offload'
drivers/net/ethernet/ti/cpsw_new.c:1537: undefined reference to
`switchdev_bridge_port_unoffload'
As mentioned, the other switchdev drivers don't suffer from this because
switchdev_bridge_port_offload() is not the first symbol exported by the
bridge that they are calling, so they already needed to deal with this
in the same way.
Fixes: 2f5dc00f7a
("net: bridge: switchdev: let drivers inform which bridge ports are offloaded")
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
9b29a161ef
commit
b0e8181762
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@ -1,5 +1,6 @@
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config SPARX5_SWITCH
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tristate "Sparx5 switch driver"
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depends on BRIDGE || BRIDGE=n
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depends on NET_SWITCHDEV
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depends on HAS_IOMEM
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depends on OF
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@ -64,6 +64,7 @@ config TI_CPSW
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config TI_CPSW_SWITCHDEV
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tristate "TI CPSW Switch Support with switchdev"
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depends on ARCH_DAVINCI || ARCH_OMAP2PLUS || COMPILE_TEST
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depends on BRIDGE || BRIDGE=n
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depends on NET_SWITCHDEV
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depends on TI_CPTS || !TI_CPTS
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select PAGE_POOL
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@ -109,6 +110,7 @@ config TI_K3_AM65_CPSW_NUSS
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config TI_K3_AM65_CPSW_SWITCHDEV
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bool "TI K3 AM654x/J721E CPSW Switch mode support"
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depends on TI_K3_AM65_CPSW_NUSS
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depends on BRIDGE || BRIDGE=n
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depends on NET_SWITCHDEV
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help
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This enables switchdev support for TI K3 CPSWxG Ethernet
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