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bpf: pass bpf_struct_ops_link to callbacks in bpf_struct_ops.

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Pass an additional pointer of bpf_struct_ops_link to callback function reg,
unreg, and update provided by subsystems defined in bpf_struct_ops. A
bpf_struct_ops_map can be registered for multiple links. Passing a pointer
of bpf_struct_ops_link helps subsystems to distinguish them.

This pointer will be used in the later patches to let the subsystem
initiate a detachment on a link that was registered to it previously.

Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
Link: https://lore.kernel.org/r/20240530065946.979330-2-thinker.li@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
Kui-Feng Lee
2024-05-29 23:59:39 -07:00
committed by Martin KaFai Lau
parent 46253c4ae9
commit 73287fe228
6 changed files with 18 additions and 18 deletions
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4
tools/testing/selftests/bpf/bpf_test_no_cfi/bpf_test_no_cfi.c
View File

@@ -22,12 +22,12 @@ static int dummy_init_member(const struct btf_type *t,
return 0;
}
static int dummy_reg(void *kdata)
static int dummy_reg(void *kdata, struct bpf_link *link)
{
return 0;
}
static void dummy_unreg(void *kdata)
static void dummy_unreg(void *kdata, struct bpf_link *link)
{
}

6
tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
View File

@@ -820,7 +820,7 @@ static const struct bpf_verifier_ops bpf_testmod_verifier_ops = {
.is_valid_access = bpf_testmod_ops_is_valid_access,
};
static int bpf_dummy_reg(void *kdata)
static int bpf_dummy_reg(void *kdata, struct bpf_link *link)
{
struct bpf_testmod_ops *ops = kdata;
@@ -835,7 +835,7 @@ static int bpf_dummy_reg(void *kdata)
return 0;
}
static void bpf_dummy_unreg(void *kdata)
static void bpf_dummy_unreg(void *kdata, struct bpf_link *link)
{
}
@@ -871,7 +871,7 @@ struct bpf_struct_ops bpf_bpf_testmod_ops = {
.owner = THIS_MODULE,
};
static int bpf_dummy_reg2(void *kdata)
static int bpf_dummy_reg2(void *kdata, struct bpf_link *link)
{
struct bpf_testmod_ops2 *ops = kdata;