[dpdk-dev] [PATCH] kni: compatibility with RHEL 7

[Cao, Waterman]

Hi Thomas,

 We tested this patch with latest RHEL 7. (3.10.0-123) on RC2.
 It fixed compilation error in KNI.
 Please merge this patch in the RC3.
 Although We don't meet this compilation in RHEL 7 beta version, but Hiroshi caught it in latest version.
 It seems that there are a difference between Kernel 3.10.0-54 and 3.10.0-123

Thanks

Waterman 

-----Original Message-----
>From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com] 
>Sent: Wednesday, June 25, 2014 6:05 PM
>To: Cao, Waterman
>Cc: dev at dpdk.org; Hiroshi Shimamoto; Hayato Momma
>Subject: Re: [dpdk-dev] [PATCH] kni: compatibility with RHEL 7
>
>Hi Waterman,
>
>2014-06-12 09:35, Hiroshi Shimamoto:
>> 2014-06-12 09:18, Cao, Waterman:
>> >   Can you give details about Linux Kernel version and complier version?
>> >   Because we tried to build code in the Redhat 7.0 before, but we don't
>> >   meet this issue. Please see information as the following:
>> >   Linux kernel 3.10.0-54.0.1.el7.x86_64
>> >   RHEL70BETA_64	GCC 4.8.2  ICC: 14.0.0
>> 
>> Yes,
>> 
>> Linux REHEL7RC-1 3.10.0-121.el7.x86_64 #1 SMP Tue Apr 8 10:48:19 EDT 
>> 2014
>> x86_64 x86_64 x86_64 GNU/Linux gcc version 4.8.2 20140120 (Red Hat
>> 4.8.2-16) (GCC)
>> 
>> I got the below error;
>> /path/to/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h:3851:1: error:
>> conflicting types for ‘skb_set_hash’ skb_set_hash(struct sk_buff *skb,
>> __u32 hash, __always_unused int type)
>> 
>> /usr/src/kernels/3.10.0-121.el7.x86_64/include/linux/skbuff.h:762:1: note:
>> previous definition of ‘skb_set_hash’ was here skb_set_hash(struct 
>> sk_buff *skb, __u32 hash, enum pkt_hash_types type)
>
>Could you confirm this fix is needed and acknowledge it?
>Thanks
>
>
>> > -----Original Message-----
>> > 
>> > >From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Hiroshi 
>> > >Shimamoto
>> > >Sent: Thursday, June 12, 2014 4:10 PM
>> > >To: dev at dpdk.org
>> > >Cc: Hayato Momma
>> > >Subject: [dpdk-dev] [PATCH] kni: compatibility with RHEL 7
>> > >
>> > >From: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
>> > >
>> > >Compilation in RHEL7 is failed. This fixes the build issue.
>> > >
>> > >RHEL7 has skb_set_hash, the kernel version is 3.10 though.
>> > >Don't define skb_set_hash for RHEL7.
>> > >
>> > >Signed-off-by: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
>> > >Reviewed-by: Hayato Momma <h-momma at ce.jp.nec.com>
>> > >---
>> > >
>> > > lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h | 5 +++++
>> > > 1 file changed, 5 insertions(+)
>> > >
>> > >diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
>> > >b/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h index
>> > >4c27d5d..b4de6e2 100644
>> > >--- a/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
>> > >+++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
>> > >@@ -3843,6 +3843,9 @@ static inline struct sk_buff 
>> > >*__kc__vlan_hwaccel_put_tag(struct sk_buff *skb,  #endif /* >= 
>> > >3.10.0>
>> > */
>> > 
>> > > #if ( LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0) )
>> > >
>> > >+
>> > >+#if (!(RHEL_RELEASE_CODE && RHEL_RELEASE_CODE >=
>> > >+RHEL_RELEASE_VERSION(7,0)))
>> > >+
>> > >
>> > > #ifdef NETIF_F_RXHASH
>> > > #define PKT_HASH_TYPE_L3 0
>> > > static inline void
>> > >
>> > >@@ -3851,6 +3854,8 @@ skb_set_hash(struct sk_buff *skb, __u32 hash, 
>> > >__always_unused int type)> >
>> > > 	skb->rxhash = hash;
>> > > 
>> > > }
>> > > #endif /* NETIF_F_RXHASH */
>> > >
>> > >+#endif /* < RHEL7 */
>> > >+
>> > >
>> > > #endif /* < 3.14.0 */
>> > > 
>> > > #endif /* _KCOMPAT_H_ */
>> > >
>> > >--
>> > >1.9.1
>
>
>--
>Thomas