Differential D15691 Diff 43718 head/sys/amd64/amd64/bpf_jit_machdep.c

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head/sys/amd64/amd64/bpf_jit_machdep.c

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#include <sys/param.h>		#include <sys/param.h>
#include <sys/systm.h>		#include <sys/systm.h>
#include <sys/kernel.h>		#include <sys/kernel.h>
#include <sys/malloc.h>		#include <sys/malloc.h>
#include <sys/mbuf.h>		#include <sys/mbuf.h>
#include <sys/socket.h>		#include <sys/socket.h>

#include <net/if.h>		#include <net/if.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/vm_kern.h>
#else		#else
#include <stdlib.h>		#include <stdlib.h>
#include <string.h>		#include <string.h>
#include <sys/mman.h>		#include <sys/mman.h>
#include <sys/param.h>		#include <sys/param.h>
#endif		#endif

#include <sys/types.h>		#include <sys/types.h>
▲ Show 20 Lines • Show All 542 Lines • ▼ Show 20 Lines	#endif
ins++;		ins++;
}		}

if (pass > 0)		if (pass > 0)
continue;		continue;

*size = stream.cur_ip;		*size = stream.cur_ip;
#ifdef _KERNEL		#ifdef _KERNEL
/*		stream.ibuf = malloc(*size, M_BPFJIT, M_EXEC \| M_NOWAIT);
* We cannot use malloc(9) because DMAP is mapped as NX.
*/
stream.ibuf = (void )kmem_malloc(kernel_arena, size,
M_NOWAIT);
if (stream.ibuf == NULL)		if (stream.ibuf == NULL)
break;		break;
#else		#else
stream.ibuf = mmap(NULL, *size, PROT_READ \| PROT_WRITE,		stream.ibuf = mmap(NULL, *size, PROT_READ \| PROT_WRITE,
MAP_ANON, -1, 0);		MAP_ANON, -1, 0);
if (stream.ibuf == MAP_FAILED) {		if (stream.ibuf == MAP_FAILED) {
stream.ibuf = NULL;		stream.ibuf = NULL;
break;		break;
Show All 31 Lines	#ifndef _KERNEL
if (stream.ibuf != NULL &&		if (stream.ibuf != NULL &&
mprotect(stream.ibuf, *size, PROT_READ \| PROT_EXEC) != 0) {		mprotect(stream.ibuf, *size, PROT_READ \| PROT_EXEC) != 0) {
munmap(stream.ibuf, *size);		munmap(stream.ibuf, *size);
stream.ibuf = NULL;		stream.ibuf = NULL;
}		}
#endif		#endif

return ((bpf_filter_func)(void *)stream.ibuf);		return ((bpf_filter_func)(void *)stream.ibuf);
}

void
bpf_jit_free(void *func, size_t size)
{

#ifdef _KERNEL
kmem_free(kernel_arena, (vm_offset_t)func, size);
#else
munmap(func, size);
#endif
}		}