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authorMartin KaFai Lau <kafai@fb.com>2017-04-14 20:30:27 +0300
committerDavid S. Miller <davem@davemloft.net>2017-04-17 20:55:52 +0300
commitbf8db5d243a103ccd3f6d82a110e2302608e248c (patch)
tree80e2505b50f17841299ae6273bcdbb4eeb04cc33 /samples/bpf/map_perf_test_kern.c
parent6467acbc70f011d5852f60f6e04825a268c8e8b0 (diff)
downloadlinux-bf8db5d243a103ccd3f6d82a110e2302608e248c.tar.xz
bpf: lru: Refactor LRU map tests in map_perf_test
One more LRU test will be added later in this patch series. In this patch, we first move all existing LRU map tests into a single syscall (connect) first so that the future new LRU test can be added without hunting another syscall. One of the map name is also changed from percpu_lru_hash_map to nocommon_lru_hash_map to avoid the confusion with percpu_hash_map. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf/map_perf_test_kern.c')
-rw-r--r--samples/bpf/map_perf_test_kern.c43
1 files changed, 31 insertions, 12 deletions
diff --git a/samples/bpf/map_perf_test_kern.c b/samples/bpf/map_perf_test_kern.c
index 9da2a3441b0a..404ed53b8a53 100644
--- a/samples/bpf/map_perf_test_kern.c
+++ b/samples/bpf/map_perf_test_kern.c
@@ -26,7 +26,7 @@ struct bpf_map_def SEC("maps") lru_hash_map = {
.max_entries = 10000,
};
-struct bpf_map_def SEC("maps") percpu_lru_hash_map = {
+struct bpf_map_def SEC("maps") nocommon_lru_hash_map = {
.type = BPF_MAP_TYPE_LRU_HASH,
.key_size = sizeof(u32),
.value_size = sizeof(long),
@@ -100,6 +100,7 @@ int stress_percpu_hmap(struct pt_regs *ctx)
bpf_map_delete_elem(&percpu_hash_map, &key);
return 0;
}
+
SEC("kprobe/sys_getgid")
int stress_hmap_alloc(struct pt_regs *ctx)
{
@@ -128,24 +129,42 @@ int stress_percpu_hmap_alloc(struct pt_regs *ctx)
return 0;
}
-SEC("kprobe/sys_getpid")
+SEC("kprobe/sys_connect")
int stress_lru_hmap_alloc(struct pt_regs *ctx)
{
- u32 key = bpf_get_prandom_u32();
+ struct sockaddr_in6 *in6;
+ u16 test_case, dst6[8];
+ int addrlen, ret;
+ char fmt[] = "Failed at stress_lru_hmap_alloc. ret:%d\n";
long val = 1;
+ u32 key = bpf_get_prandom_u32();
- bpf_map_update_elem(&lru_hash_map, &key, &val, BPF_ANY);
+ in6 = (struct sockaddr_in6 *)PT_REGS_PARM2(ctx);
+ addrlen = (int)PT_REGS_PARM3(ctx);
- return 0;
-}
+ if (addrlen != sizeof(*in6))
+ return 0;
-SEC("kprobe/sys_getppid")
-int stress_percpu_lru_hmap_alloc(struct pt_regs *ctx)
-{
- u32 key = bpf_get_prandom_u32();
- long val = 1;
+ ret = bpf_probe_read(dst6, sizeof(dst6), &in6->sin6_addr);
+ if (ret)
+ goto done;
+
+ if (dst6[0] != 0xdead || dst6[1] != 0xbeef)
+ return 0;
+
+ test_case = dst6[7];
+
+ if (test_case == 0)
+ ret = bpf_map_update_elem(&lru_hash_map, &key, &val, BPF_ANY);
+ else if (test_case == 1)
+ ret = bpf_map_update_elem(&nocommon_lru_hash_map, &key, &val,
+ BPF_ANY);
+ else
+ ret = -EINVAL;
- bpf_map_update_elem(&percpu_lru_hash_map, &key, &val, BPF_ANY);
+done:
+ if (ret)
+ bpf_trace_printk(fmt, sizeof(fmt), ret);
return 0;
}