[dpdk-stable] [dpdk-dev] [PATCH] examples/bpf: fix compilation issue

[Ananyev, Konstantin]

> 
> > Example BPF programs t1.c, t2.c, t3.c in folder examples/bpf are failing to
> > compile with latest dpdk.org master.
> 
> As a note, the file t3.c is one which fails to get compiled.

t2.c also uses rte_mbuf, so same story  for both. 

> 
> > The reason is changes in some core DPDK header files, that causes now inclusion
> > of x86 specific headers.
> 
> snipped
> 
> 
> >
> >  #include <stdint.h>
> >  #include <rte_common.h>
> > -#include <rte_memory.h>
> >
> >  #ifdef __cplusplus
> >  extern "C" {
> > @@ -364,6 +363,23 @@ typedef struct {
> >  	volatile int16_t cnt; /**< An internal counter value. */  } rte_atomic16_t;
> >
> > +#define RTE_CACHE_LINE_MIN_SIZE 64      /**< Minimum Cache line size. */
> 
> The definition for RTE_CACHE_LINE_MIN_SIZE is present in ` rte_config.h`.

I believe it is not:
$ find lib config -type f | xargs grep CACHE_LINE_MIN_SIZE
lib/librte_eal/linux/eal/include/rte_kni_common.h:#define RTE_CACHE_LINE_MIN_SIZE 64
lib/librte_eal/linux/eal/include/rte_kni_common.h:      char pad3[8] __attribute__((__aligned__(RTE_CACHE_LINE_MIN_SIZE)));
lib/librte_eal/common/include/rte_memory.h:#define RTE_CACHE_LINE_MIN_SIZE 64  /**< Minimum Cache line size. */
lib/librte_eal/common/include/rte_memory.h:#define __rte_cache_min_aligned __rte_aligned(RTE_CACHE_LINE_MIN_SIZE)

Konstantin