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Commit 7c5db7e7 authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller
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netdevsim: don't compile BPF code if syscall not enabled 



We should not compile netdevsim/bpf.c if BPF syscall is not
enabled.  Otherwise bpf core would have to provide wrappers
for all functions offload drivers may call, even though
system will never see a BPF object.

Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: default avatarQuentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent caf95228

drivers/net/netdevsim/Makefile

+5 −1
Original line number Diff line number Diff line
@@ -4,4 +4,8 @@ obj-$(CONFIG_NETDEVSIM) += netdevsim.o 


netdevsim-objs := \

	netdev.o \

	bpf.o \
 


ifeq ($(CONFIG_BPF_SYSCALL),y)

netdevsim-objs += \

	bpf.o

endif

drivers/net/netdevsim/netdevsim.h

+28 −0
Original line number Diff line number Diff line
@@ -68,12 +68,40 @@ struct netdevsim { 


extern struct dentry *nsim_ddir;



#ifdef CONFIG_BPF_SYSCALL

int nsim_bpf_init(struct netdevsim *ns);

void nsim_bpf_uninit(struct netdevsim *ns);

int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);

int nsim_bpf_disable_tc(struct netdevsim *ns);

int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,

			       void *type_data, void *cb_priv);

#else

static inline int nsim_bpf_init(struct netdevsim *ns)

{

	return 0;

}



static inline void nsim_bpf_uninit(struct netdevsim *ns)

{

}



static inline int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf)

{

	return bpf->command == XDP_QUERY_PROG ? 0 : -EOPNOTSUPP;

}



static inline int nsim_bpf_disable_tc(struct netdevsim *ns)

{

	return 0;

}



static inline int

nsim_bpf_setup_tc_block_cb(enum tc_setup_type type, void *type_data,

			   void *cb_priv)

{

	return -EOPNOTSUPP;

}

#endif



static inline struct netdevsim *to_nsim(struct device *ptr)

{