Re: 1.7.0 release failed to compile on linux

[Aws Ismail <aws.ismail-CWA4WttNNZF54TAoqtyWWQ@public.gmane.org>]

On 08/14/2014 05:55 PM, Wiles, Roger Keith wrote:
> For the SKB function change I had to change the ifdef in the kcompat.h file around line 3848 (I think) to:
>
> /* #### Changed the next line to use (3,13,8) instead of (3,14,0) KeithW */
> #if ( LINUX_VERSION_CODE < KERNEL_VERSION(3,13,8) )
> #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
> 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 */
>
>
> Keith Wiles, Principal Technologist with CTO office, Wind River mobile 972-213-5533
>
> On Aug 14, 2014, at 4:44 PM, Qiaobing Xie <qiaobing.xie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org<mailto:qiaobing.xie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>> wrote:
>
> Hi,
>
> I got the following error when I tried to compile 1.7.0 release tarball on a Linux box (Ubuntu 12.04/kernel=3.13.0-32-generic, gcc=4.6.3):
>
> ============
> In file included from /home/qxie/dpdk-1.7.0/lib/librte_eal/linuxapp/kni/ethtool/igb/e1000_osdep.h:41:0,
> from /home/qxie/dpdk-1.7.0/lib/librte_eal/linuxapp/kni/ethtool/igb/e1000_hw.h:31,
> from /home/qxie/dpdk-1.7.0/lib/librte_eal/linuxapp/kni/ethtool/igb/e1000_api.h:31,
> from /home/qxie/dpdk-1.7.0/build/build/lib/librte_eal/linuxapp/kni/e1000_82575.c:38:
> /home/qxie/dpdk-1.7.0/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h:3853:1: error: conflicting types for ‘skb_set_hash’
> /usr/src/linux-headers-3.13.0-32-generic/include/linux/skbuff.h:740:1: note: previous definition of ‘skb_set_hash’ was here
Last time I checked, I overcame this error by not using the tarball but 
by simply cloning the dpdk git repo and checking out the v1.7.0-rc4 tag. 
For example:

git clone git://dpdk.org/dpdk
git checkout v1.7.0-rc4
git checkout -b dpdk1.7.0-rc4  <---- the branch name is just an example, 
you could decide on any other name as you see fit.

My machine info:

3.11.0-20 kernel, ubuntu 12.04, gcc 4.6.3

 From the v1.7.0-rc4 tag, viewing 
lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h:3848, you could see:

<snip>
#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
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 */
<snip>

> make[8]: *** [/home/qxie/dpdk-1.7.0/build/build/lib/librte_eal/linuxapp/kni/e1000_82575.o] Error 1
> ============
>
> Apparently the version check around 'skb_set_hash' in kcompat.h failed for some reason. To work around it, I temporarily commented out that 'skb_set_hash' definition code and rte_kni complied fine. But it failed again in librte_pmd_ixgbe:
>
> =============
> In file included from /home/qxie/dpdk-1.7.0/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c:41:0:
> /usr/lib/gcc/x86_64-linux-gnu/4.6/include/nmmintrin.h:31:3: error: #error "SSE4.2 instruction set not enabled"
> /home/qxie/dpdk-1.7.0/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c: In function ‘ixgbe_recv_pkts_vec’:
> /home/qxie/dpdk-1.7.0/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c:297:3: error: implicit declaration of function ‘_mm_shuffle_epi8’ [-Werror=implicit-function-declaration]
> /home/qxie/dpdk-1.7.0/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c:297:3: error: nested extern declaration of ‘_mm_shuffle_epi8’ [-Werror=nested-externs]
> /home/qxie/dpdk-1.7.0/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c:297:11: error: incompatible types when assigning to type ‘__m128i’ from type ‘int’
> /home/qxie/dpdk-1.7.0/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c:298:11: error: incompatible types when assigning to type ‘__m128i’ from type ‘int’
> /home/qxie/dpdk-1.7.0/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c:313:11: error: incompatible types when assigning to type ‘__m128i’ from type ‘int’
> /home/qxie/dpdk-1.7.0/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c:314:11: error: incompatible types when assigning to type ‘__m128i’ from type ‘int’
> /home/qxie/dpdk-1.7.0/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c:341:3: error: implicit declaration of function ‘_mm_popcnt_u64’ [-Werror=implicit-function-declaration]
> /home/qxie/dpdk-1.7.0/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c:341:3: error: nested extern declaration of ‘_mm_popcnt_u64’ [-Werror=nested-externs]
> cc1: all warnings being treated as errors
> make[3]: *** [ixgbe_rxtx_vec.o] Error 1
> ==============
>
> My CPU is the older Intel C2D E6550 which does not have sse4.2/sse4.1 support. Is there a way to work around this?
>
> -Q
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