AuxXxilium/linux_dsm_epyc7002
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Merge branch 'bpf-next'

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Daniel Borkmann says:

====================
Minor BPF updates

Various minor misc updates.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2015-07-30 11:13:21 -07:00
commit 951debb949
5 changed files with 19 additions and 5 deletions
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2
arch/s390/net/bpf_jit_comp.c
View File

@ -1245,7 +1245,7 @@ static int bpf_jit_prog(struct bpf_jit *jit, struct bpf_prog *fp)
jit->lit = jit->lit_start;
jit->prg = 0;
bpf_jit_prologue(jit, fp->type == BPF_PROG_TYPE_UNSPEC);
bpf_jit_prologue(jit, bpf_prog_was_classic(fp));
for (i = 0; i < fp->len; i += insn_count) {
insn_count = bpf_jit_insn(jit, fp, i);
if (insn_count < 0)

2
arch/sparc/net/bpf_jit_comp.c
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@ -807,7 +807,7 @@ cond_branch: f_offset = addrs[i + filter[i].jf];
}
if (bpf_jit_enable > 1)
bpf_jit_dump(flen, proglen, pass, image);
bpf_jit_dump(flen, proglen, pass + 1, image);
if (image) {
bpf_flush_icache(image, image + proglen);

2
arch/x86/net/bpf_jit_comp.c
View File

@ -1103,7 +1103,7 @@ void bpf_int_jit_compile(struct bpf_prog *prog)
}
if (bpf_jit_enable > 1)
bpf_jit_dump(prog->len, proglen, 0, image);
bpf_jit_dump(prog->len, proglen, pass + 1, image);
if (image) {
bpf_flush_icache(header, image + proglen);

16
include/linux/filter.h
View File

@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <linux/printk.h>
#include <linux/workqueue.h>
#include <linux/sched.h>
#include <asm/cacheflush.h>
@ -354,6 +355,16 @@ static inline unsigned int bpf_prog_size(unsigned int proglen)
offsetof(struct bpf_prog, insns[proglen]));
}
static inline bool bpf_prog_was_classic(const struct bpf_prog *prog)
{
/* When classic BPF programs have been loaded and the arch
* does not have a classic BPF JIT (anymore), they have been
* converted via bpf_migrate_filter() to eBPF and thus always
* have an unspec program type.
*/
return prog->type == BPF_PROG_TYPE_UNSPEC;
}
#define bpf_classic_proglen(fprog) (fprog->len * sizeof(fprog->filter[0]))
#ifdef CONFIG_DEBUG_SET_MODULE_RONX
@ -428,8 +439,9 @@ void bpf_jit_free(struct bpf_prog *fp);
static inline void bpf_jit_dump(unsigned int flen, unsigned int proglen,
u32 pass, void *image)
{
pr_err("flen=%u proglen=%u pass=%u image=%pK\n",
flen, proglen, pass, image);
pr_err("flen=%u proglen=%u pass=%u image=%pK from=%s pid=%d\n", flen,
proglen, pass, image, current->comm, task_pid_nr(current));
if (image)
print_hex_dump(KERN_ERR, "JIT code: ", DUMP_PREFIX_OFFSET,
16, 1, image, proglen, false);

2
lib/test_bpf.c
View File

@ -4613,6 +4613,8 @@ static struct bpf_prog *generate_filter(int which, int *err)
}
fp->len = flen;
/* Type doesn't really matter here as long as it's not unspec. */
fp->type = BPF_PROG_TYPE_SOCKET_FILTER;
memcpy(fp->insnsi, fptr, fp->len * sizeof(struct bpf_insn));
bpf_prog_select_runtime(fp);