09/11/2026 18:47, Stephen Hemminger: > On Mon, 9 Nov 2026 17:47:30 +0200 > Bing Zhao <[email protected]> wrote: > > > The PACKET_IGNORE_OUTGOING socket option is used unconditionally, > > but it was only added to the uapi headers in Linux 4.20. The build > > fails on distributions shipping older kernel headers, like RHEL 8 > > (kernel-headers 4.18.0): > > > > rte_eth_af_packet.c:1057:41: error: 'PACKET_IGNORE_OUTGOING' > > undeclared (first use in this function) > > > > DPDK requires Linux 5.4, so the driver does not need to support older > > kernels. Check for the symbol at configure time and skip the driver > > when the headers lack it, instead of failing the whole build. > > > > Fixes: 3db7aa7868b2 ("net/af_packet: use kernel to filter single-queue Rx") > > > > Signed-off-by: Bing Zhao <[email protected]> > > --- > > No. DPDK should just fail build on older kernels. > Since current DPDK is not tested with those releases, anyone doing that is > working outside the tested environment and has to fix it themselves.
We used to support some old RHEL versions. Remind that the RHEL kernel is full of backports, it is not exactly the same as an really old kernel. I think this solution disabling a driver is acceptable.
