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From: Yousong Zhou <yszhou4tech@gmail.com>
To: WireGuard mailing list <wireguard@lists.zx2c4.com>
Subject: compilation error on centos 7 kernels
Date: Mon, 30 Jul 2018 11:26:46 +0800
Message-ID: <CAECwjAjdHujDmgKURVf1jG=Pg4vu3XLje619GvtH2G5kGWLm3A@mail.gmail.com> (raw)

Yesterday I tried compiling openvswitch-dkms on 2 centos 7 systems,
both failed out of box because of the compat conditional compilation

Both system has LINUX_VERSION_CODE 199168, i.e. 3.10.0.  The 1st runs
kernel 3.10.0-514.26.2.el7.x86_64, and the second runs
3.10.0-693.2.2.el7.x86_64.  They both lacks skb_reset_tc,
our_pskb_put(), genl_family_attrbuf(), skb_put_data().  And the
3.10.0-514 kernel also lacks ipv6_mod_enabled() so I had to prepare
different dkms patches for them ;( . The bright side is that currently
both systems work fine ;)

It's partially caused by commit 401453 ("compat: handle RHEL 7.5's
recent backports"), but I think the code will be very hard to read and
maintain if we continue to use the current macro detection logic.  I
remembered openvswitch linux kernel datapath module was already in
such an state.  Maybe compile test will do better.


             reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-30  3:26 Yousong Zhou [this message]
2018-07-30  3:27 ` Yousong Zhou
2018-07-30  3:29   ` Jason A. Donenfeld
2018-07-30  3:34     ` Yousong Zhou
2018-07-30  7:42       ` Greg KH
2018-07-30  8:27         ` Yousong Zhou

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