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| author | Martin KaFai Lau <kafai@fb.com> | 2020-02-25 15:04:09 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-02-27 18:50:19 -0800 |
| commit | 5682d393b40e1fe7426a7b8c3471f05262f42010 (patch) | |
| tree | 48be740a5335e7202c66d3f238ecbf9c808c2c05 /net/dccp | |
| parent | d7f10df86202273155a9d8f8553bc2ad28e0dd46 (diff) | |
| download | linux-stable-5682d393b40e1fe7426a7b8c3471f05262f42010.tar.gz linux-stable-5682d393b40e1fe7426a7b8c3471f05262f42010.tar.bz2 linux-stable-5682d393b40e1fe7426a7b8c3471f05262f42010.zip | |
inet_diag: Refactor inet_sk_diag_fill(), dump(), and dump_one()
In a latter patch, there is a need to update "cb->min_dump_alloc"
in inet_sk_diag_fill() as it learns the diffierent bpf_sk_storages
stored in a sk while dumping all sk(s) (e.g. tcp_hashinfo).
The inet_sk_diag_fill() currently does not take the "cb" as an argument.
One of the reason is inet_sk_diag_fill() is used by both dump_one()
and dump() (which belong to the "struct inet_diag_handler". The dump_one()
interface does not pass the "cb" along.
This patch is to make dump_one() pass a "cb". The "cb" is created in
inet_diag_cmd_exact(). The "nlh" and "in_skb" are stored in "cb" as
the dump() interface does. The total number of args in
inet_sk_diag_fill() is also cut from 10 to 7 and
that helps many callers to pass fewer args.
In particular,
"struct user_namespace *user_ns", "u32 pid", and "u32 seq"
can be replaced by accessing "cb->nlh" and "cb->skb".
A similar argument reduction is also made to
inet_twsk_diag_fill() and inet_req_diag_fill().
inet_csk_diag_dump() and inet_csk_diag_fill() are also removed.
They are mostly equivalent to inet_sk_diag_fill(). Their repeated
usages are very limited. Thus, inet_sk_diag_fill() is directly used
in those occasions.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200225230409.1975173-1-kafai@fb.com
Diffstat (limited to 'net/dccp')
| -rw-r--r-- | net/dccp/diag.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/dccp/diag.c b/net/dccp/diag.c index 73ef73a218ff..8f1e2a653f6d 100644 --- a/net/dccp/diag.c +++ b/net/dccp/diag.c @@ -51,11 +51,10 @@ static void dccp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, inet_diag_dump_icsk(&dccp_hashinfo, skb, cb, r, bc); } -static int dccp_diag_dump_one(struct sk_buff *in_skb, - const struct nlmsghdr *nlh, +static int dccp_diag_dump_one(struct netlink_callback *cb, const struct inet_diag_req_v2 *req) { - return inet_diag_dump_one_icsk(&dccp_hashinfo, in_skb, nlh, req); + return inet_diag_dump_one_icsk(&dccp_hashinfo, cb, req); } static const struct inet_diag_handler dccp_diag_handler = { |