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-rw-r--r--net/mptcp/subflow.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 24c2de1891bd..e7951786a97c 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -745,15 +745,11 @@ struct request_sock *mptcp_subflow_reqsk_alloc(const struct request_sock_ops *op
EXPORT_SYMBOL(mptcp_subflow_reqsk_alloc);
/* validate hmac received in third ACK */
-static bool subflow_hmac_valid(const struct request_sock *req,
+static bool subflow_hmac_valid(const struct mptcp_subflow_request_sock *subflow_req,
const struct mptcp_options_received *mp_opt)
{
- const struct mptcp_subflow_request_sock *subflow_req;
+ struct mptcp_sock *msk = subflow_req->msk;
u8 hmac[SHA256_DIGEST_SIZE];
- struct mptcp_sock *msk;
-
- subflow_req = mptcp_subflow_rsk(req);
- msk = subflow_req->msk;
subflow_generate_hmac(READ_ONCE(msk->remote_key),
READ_ONCE(msk->local_key),
@@ -899,7 +895,7 @@ create_child:
goto dispose_child;
}
- if (!subflow_hmac_valid(req, &mp_opt)) {
+ if (!subflow_hmac_valid(subflow_req, &mp_opt)) {
SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_JOINACKMAC);
subflow_add_reset_reason(skb, MPTCP_RST_EPROHIBIT);
goto dispose_child;