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| author |   Xin Long <lucien.xin@gmail.com> | 2018-03-14 19:05:30 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-03-14 13:48:27 -0400 |
| commit | 1b1e0bc9947427ae58bbe7de0ce9cfd591b589b9 (patch) | |
| tree | 4d113bf0c79a697420a1463d6fe1798ad6f4e0d9 /include/net/sctp/auth.h | |
| parent | Merge branch 'smc-fixes' (diff) | |
| download | linux-dev-1b1e0bc9947427ae58bbe7de0ce9cfd591b589b9.tar.xz linux-dev-1b1e0bc9947427ae58bbe7de0ce9cfd591b589b9.zip | |
sctp: add refcnt support for sh_key
With refcnt support for sh_key, chunks auth sh_keys can be decided
before enqueuing it. Changing the active key later will not affect
the chunks already enqueued.
Furthermore, this is necessary when adding the support for authinfo
for sendmsg in next patch.
Note that struct sctp_chunk can't be grown due to that performance
drop issue on slow cpu, so it just reuses head_skb memory for shkey
in sctp_chunk.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sctp/auth.h')
| -rw-r--r-- | include/net/sctp/auth.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/include/net/sctp/auth.h b/include/net/sctp/auth.h index e5c57d0a082d..017c1aa3a2c9 100644 --- a/include/net/sctp/auth.h +++ b/include/net/sctp/auth.h @@ -62,8 +62,9 @@ struct sctp_auth_bytes { /* Definition for a shared key, weather endpoint or association */ struct sctp_shared_key { struct list_head key_list; - __u16 key_id; struct sctp_auth_bytes *key; + refcount_t refcnt; + __u16 key_id; }; #define key_for_each(__key, __list_head) \ @@ -103,8 +104,10 @@ int sctp_auth_send_cid(enum sctp_cid chunk, int sctp_auth_recv_cid(enum sctp_cid chunk, const struct sctp_association *asoc); void sctp_auth_calculate_hmac(const struct sctp_association *asoc, - struct sk_buff *skb, - struct sctp_auth_chunk *auth, gfp_t gfp); + struct sk_buff *skb, struct sctp_auth_chunk *auth, + struct sctp_shared_key *ep_key, gfp_t gfp); +void sctp_auth_shkey_release(struct sctp_shared_key *sh_key); +void sctp_auth_shkey_hold(struct sctp_shared_key *sh_key); /* API Helpers */ int sctp_auth_ep_add_chunkid(struct sctp_endpoint *ep, __u8 chunk_id); |