[dpdk-stable] [PATCH] kni: fix build for ndo_fdb_add in Linux 5.1

[dpdk-stable] [PATCH] kni: fix build for ndo_fdb_add in Linux 5.1

[Ferruh Yigit]

Build error seen with Linux kernel 5.1 and
when CONFIG_RTE_KNI_KMOD_ETHTOOL is enabled.

Build error:
.../dpdk/build/build/kernel/linux/kni/igb_main.c:2352:18:
  error: initialization of ... from incompatible pointer type ...
  [-Werror=incompatible-pointer-types]
    .ndo_fdb_add  = igb_ndo_fdb_add,
                      ^~~~~~~~~~~~~~~

ndo_fdb_add() is changed in Linux kernel version 5.1 and now requires
a new parameter, 'struct netlink_ext_ack *extack':
Linux Commit 87b0984ebfab ("net: Add extack argument to ndo_fdb_add()")

ndo_fdb_add() parameter updated with compile time Linux kernel version
check.

Cc: stable@dpdk.org

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
 kernel/linux/kni/ethtool/igb/igb_main.c | 6 ++++++
 kernel/linux/kni/ethtool/igb/kcompat.h  | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/kernel/linux/kni/ethtool/igb/igb_main.c b/kernel/linux/kni/ethtool/igb/igb_main.c
index 0b4faeae5..cda2b063d 100644
--- a/kernel/linux/kni/ethtool/igb/igb_main.c
+++ b/kernel/linux/kni/ethtool/igb/igb_main.c
@@ -2112,7 +2112,13 @@ static int igb_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
 #ifdef HAVE_NDO_FDB_ADD_VID
 			   u16 vid,
 #endif
+#ifdef HAVE_NDO_FDB_ADD_EXTACK
+			   u16 flags,
+			   struct netlink_ext_ack *extack)
+#else
 			   u16 flags)
+#endif
+
 #else
 static int igb_ndo_fdb_add(struct ndmsg *ndm,
 			   struct net_device *dev,
diff --git a/kernel/linux/kni/ethtool/igb/kcompat.h b/kernel/linux/kni/ethtool/igb/kcompat.h
index 11b15f3a9..649a69c81 100644
--- a/kernel/linux/kni/ethtool/igb/kcompat.h
+++ b/kernel/linux/kni/ethtool/igb/kcompat.h
@@ -3945,6 +3945,10 @@ skb_set_hash(struct sk_buff *skb, __u32 hash, __always_unused int type)
 #define HAVE_NDO_BRIDGE_SETLINK_EXTACK
 #endif /* >= 5.0.0 */
 
+#if ( LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0) )
+#define HAVE_NDO_FDB_ADD_EXTACK
+#endif /* >= 5.1.0 */
+
 #if defined(timer_setup) && defined(from_timer)
 #define HAVE_TIMER_SETUP
 #endif
-- 
2.20.1

Re: [dpdk-stable] [dpdk-dev] [PATCH] kni: fix build for ndo_fdb_add in Linux 5.1

[Bruce Richardson]

On Mon, Apr 08, 2019 at 03:22:26PM +0100, Ferruh Yigit wrote:
> Build error seen with Linux kernel 5.1 and
> when CONFIG_RTE_KNI_KMOD_ETHTOOL is enabled.
> 
> Build error:
> .../dpdk/build/build/kernel/linux/kni/igb_main.c:2352:18:
>   error: initialization of ... from incompatible pointer type ...
>   [-Werror=incompatible-pointer-types]
>     .ndo_fdb_add  = igb_ndo_fdb_add,
>                       ^~~~~~~~~~~~~~~
> 
> ndo_fdb_add() is changed in Linux kernel version 5.1 and now requires
> a new parameter, 'struct netlink_ext_ack *extack':
> Linux Commit 87b0984ebfab ("net: Add extack argument to ndo_fdb_add()")
> 
> ndo_fdb_add() parameter updated with compile time Linux kernel version
> check.
> 
> Cc: stable@dpdk.org
> 
> Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
> ---
Thanks, Ferruh.

This allows my builds to start passing again on bleeding-edge kernels.

Tested-by: Bruce Richardson <bruce.richardson@intel.com>

Re: [dpdk-stable] [dpdk-dev] [PATCH] kni: fix build for ndo_fdb_add in Linux 5.1

[Rami Rosen]

On Mon, Apr 08, 2019 at 03:22:26PM +0100, Ferruh Yigit wrote:
> Build error seen with Linux kernel 5.1 and
> when CONFIG_RTE_KNI_KMOD_ETHTOOL is enabled.
>
> Build error:
> .../dpdk/build/build/kernel/linux/kni/igb_main.c:2352:18:
>   error: initialization of ... from incompatible pointer type ...
>   [-Werror=incompatible-pointer-types]
>     .ndo_fdb_add  = igb_ndo_fdb_add,
>                       ^~~~~~~~~~~~~~~
>
> ndo_fdb_add() is changed in Linux kernel version 5.1 and now requires
> a new parameter, 'struct netlink_ext_ack *extack':
> Linux Commit 87b0984ebfab ("net: Add extack argument to ndo_fdb_add()")
>
> ndo_fdb_add() parameter updated with compile time Linux kernel version
> check.
>
> Cc: stable@dpdk.org
>
> Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
> ---
Tested-by: Bruce Richardson <bruce.richardson@intel.com>

Thanks.
Checked build with CONFIG_RTE_KNI_KMOD_ETHTOOL=y
after applying the patch, build was done against the bleeding edge of
net-next of today (kernel 5.1-rc4).
Build of the kni kernel module completed successfully.

Reviewed-by: Rami Rosen <ramirose@gmail.com>

Re: [dpdk-stable] [dpdk-dev] [PATCH] kni: fix build for ndo_fdb_add in Linux 5.1

[Thomas Monjalon]

09/04/2019 19:59, Rami Rosen:
> On Mon, Apr 08, 2019 at 03:22:26PM +0100, Ferruh Yigit wrote:
> > Build error seen with Linux kernel 5.1 and
> > when CONFIG_RTE_KNI_KMOD_ETHTOOL is enabled.
> >
> > Build error:
> > .../dpdk/build/build/kernel/linux/kni/igb_main.c:2352:18:
> >   error: initialization of ... from incompatible pointer type ...
> >   [-Werror=incompatible-pointer-types]
> >     .ndo_fdb_add  = igb_ndo_fdb_add,
> >                       ^~~~~~~~~~~~~~~
> >
> > ndo_fdb_add() is changed in Linux kernel version 5.1 and now requires
> > a new parameter, 'struct netlink_ext_ack *extack':
> > Linux Commit 87b0984ebfab ("net: Add extack argument to ndo_fdb_add()")
> >
> > ndo_fdb_add() parameter updated with compile time Linux kernel version
> > check.
> >
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
> > ---
> Tested-by: Bruce Richardson <bruce.richardson@intel.com>
> 
> Thanks.
> Checked build with CONFIG_RTE_KNI_KMOD_ETHTOOL=y
> after applying the patch, build was done against the bleeding edge of
> net-next of today (kernel 5.1-rc4).
> Build of the kni kernel module completed successfully.
> 
> Reviewed-by: Rami Rosen <ramirose@gmail.com>

Applied, thanks