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bpf: move user_size out of bpf_test_init 

Rely on data_size_in in bpf_test_init routine signature. This is a
preliminary patch to introduce xdp frags selftest

Acked-by: Toke Hoiland-Jorgensen <toke@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/6b48d38ed3d60240d7d6bb15e6fa7fabfac8dfb2.1642758637.git.lorenzo@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2022-01-21 11:09:57 +01:00 committed by Alexei Starovoitov
parent d99173027d
commit be3d72a289
1 changed files with 7 additions and 6 deletions
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13
net/bpf/test_run.c
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@ -367,11 +367,10 @@ BTF_SET_START(test_sk_ret_null_kfunc_ids)
BTF_ID(func, bpf_kfunc_call_test_acquire)
BTF_SET_END(test_sk_ret_null_kfunc_ids)
static void *bpf_test_init(const union bpf_attr *kattr, u32 size,
u32 headroom, u32 tailroom)
static void *bpf_test_init(const union bpf_attr *kattr, u32 user_size,
u32 size, u32 headroom, u32 tailroom)
{
void __user *data_in = u64_to_user_ptr(kattr->test.data_in);
u32 user_size = kattr->test.data_size_in;
void *data;
if (size < ETH_HLEN || size > PAGE_SIZE - headroom - tailroom)
@ -699,7 +698,8 @@ int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
if (kattr->test.flags || kattr->test.cpu)
return -EINVAL;
data = bpf_test_init(kattr, size, NET_SKB_PAD + NET_IP_ALIGN,
data = bpf_test_init(kattr, kattr->test.data_size_in,
size, NET_SKB_PAD + NET_IP_ALIGN,
SKB_DATA_ALIGN(sizeof(struct skb_shared_info)));
if (IS_ERR(data))
return PTR_ERR(data);
@ -908,7 +908,8 @@ int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr,
/* XDP have extra tailroom as (most) drivers use full page */
max_data_sz = 4096 - headroom - tailroom;
data = bpf_test_init(kattr, max_data_sz, headroom, tailroom);
data = bpf_test_init(kattr, kattr->test.data_size_in,
max_data_sz, headroom, tailroom);
if (IS_ERR(data)) {
ret = PTR_ERR(data);
goto free_ctx;
@ -994,7 +995,7 @@ int bpf_prog_test_run_flow_dissector(struct bpf_prog *prog,
if (size < ETH_HLEN)
return -EINVAL;
data = bpf_test_init(kattr, size, 0, 0);
data = bpf_test_init(kattr, kattr->test.data_size_in, size, 0, 0);
if (IS_ERR(data))
return PTR_ERR(data);