Hi, Please see comments inline > -----Original Message----- > From: dev [mailto:[email protected]] On Behalf Of Jerin Jacob > Sent: Wednesday, January 31, 2018 7:14 AM > To: [email protected] > Cc: Thomas Monjalon <[email protected]>; Jerin Jacob > <[email protected]>; Pascal Mazon > <[email protected]>; Jan Viktorin <[email protected]>; > Jianbo Liu <[email protected]> > Subject: [dpdk-dev] [PATCH] net/tap: fix build issue with ARM32 > > arm32 Linux does not support eBPF interface. > Since tap PMD driver has a dependency on eBPF(the symbol __NR_bpf), > disabling it armv7 config. > > compilation error log: > In file included from /tmp/dpdk/drivers/net/tap/tap_bpf_api.c:15:0: > /tmp/dpdk/drivers/net/tap/tap_bpf.h:103:4: error: #error __NR_bpf not > defined # error __NR_bpf not defined > ^
arm architecture is missing is file drivers/tap/tap_bpf.h I suggest adding it, for example # elif defined(__arm__) # define __NR_bpf 386 It should work for you. Can you please try it? If it doesn't work for you, please have a look in this link: https://sourceforge.net/p/predef/wiki/Architectures/ where you can see more arm architecture definitions. You should find the one suitable for you. > /tmp/dpdk/drivers/net/tap/tap_bpf_api.c: In function ‘sys_bpf’: > /tmp/dpdk/drivers/net/tap/tap_bpf_api.c:92:17: error: ‘__NR_bpf’ > undeclared (first use in this function) > return syscall(__NR_bpf, cmd, attr, size); > ^ > /tmp/dpdk/drivers/net/tap/tap_bpf_api.c:92:17: note: each undeclared > identifier is reported only once for each function it appears in > /tmp/dpdk/drivers/net/tap/tap_bpf_api.c:93:1: error: control reaches end of > non-void function [-Werror=return-type] } ^ > cc1: all warnings being treated as errors > > Fixes: b02d85e1 ("net/tap: add eBPF API") > > Cc: Pascal Mazon <[email protected]> > Cc: Jan Viktorin <[email protected]> > Cc: Jianbo Liu <[email protected]> > > Signed-off-by: Jerin Jacob <[email protected]> > --- > config/defconfig_arm-armv7a-linuxapp-gcc | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/config/defconfig_arm-armv7a-linuxapp-gcc > b/config/defconfig_arm-armv7a-linuxapp-gcc > index a20b7a85f..4a55bb397 100644 > --- a/config/defconfig_arm-armv7a-linuxapp-gcc > +++ b/config/defconfig_arm-armv7a-linuxapp-gcc > @@ -80,3 +80,4 @@ CONFIG_RTE_LIBRTE_BNX2X_PMD=n > CONFIG_RTE_LIBRTE_QEDE_PMD=n CONFIG_RTE_LIBRTE_SFC_EFX_PMD=n > CONFIG_RTE_LIBRTE_AVP_PMD=n > +CONFIG_RTE_LIBRTE_PMD_TAP=n > -- I suggest fixing the compilation issue by adding the missing architecture system call number (as suggested above) instead of disabling TAP compilation by default > 2.16.1
