RE: af_xdp + libbpf 0.8

["Loftus, Ciara" <ciara.loftus@intel.com>]

> 
> 24/06/2022 00:18, Ferruh Yigit:
> > On 6/23/2022 10:58 PM, Thomas Monjalon wrote:
> > > Hi,
> > >
> > > It seems DPDK is not compatible with libbpf 0.8:
> > >
> > > drivers/net/af_xdp/rte_eth_af_xdp.c:871:6: error: 'bpf_get_link_xdp_id'
> is deprecated: libbpf v0.8+: use bpf_xdp_query_id() instead
> > > /usr/include/bpf/libbpf.h:1168:1: note: 'bpf_get_link_xdp_id' has been
> explicitly marked deprecated here
> > > LIBBPF_DEPRECATED_SINCE(0, 8, "use bpf_xdp_query_id() instead")
> > >
> > > drivers/net/af_xdp/rte_eth_af_xdp.c:876:2: error: 'bpf_set_link_xdp_fd'
> is deprecated: libbpf v0.8+: use bpf_xdp_attach() instead
> > > /usr/include/bpf/libbpf.h:1163:1: note: 'bpf_set_link_xdp_fd' has been
> explicitly marked deprecated here
> > > LIBBPF_DEPRECATED_SINCE(0, 8, "use bpf_xdp_attach() instead")
> > >
> > > dpdk/drivers/net/af_xdp/rte_eth_af_xdp.c:1198:8: error:
> 'bpf_set_link_xdp_fd' is deprecated: libbpf v0.8+: use bpf_xdp_attach()
> instead
> > > /usr/include/bpf/libbpf.h:1163:1: note: 'bpf_set_link_xdp_fd' has been
> explicitly marked deprecated here
> > > LIBBPF_DEPRECATED_SINCE(0, 8, "use bpf_xdp_attach() instead")
> >
> >  From af_xdp documentation (doc.dpdk.org/guides/nics/af_xdp.html):
> >
> > 5.2. Prerequisites
> > This is a Linux-specific PMD, thus the following prerequisites apply:
> >
> > Both libxdp >=v1.2.2 and libbpf libraries installed, or, libbpf <=v0.6.0
> 
> I am in the first case: libxdp-1.2.3 and libbpf-0.8
> According to the documentation, it should work.
> 

I submitted a fix to prevent linking with >=v0.8.0.
It can be used until the more robust solution is ready which requires a bit more validation.

Thanks,
Ciara