In some functions, 'remaining' variable was given in argument and/or set
but never read.
net/mptcp/options.c:779:3: warning: Value stored to 'remaining' is never
read [clang-analyzer-deadcode.DeadStores].
net/mptcp/options.c:547:3: warning: Value stored to 'remaining' is never
read [clang-analyzer-deadcode.DeadStores].
The issue has been reported internally by Alibaba CI.
Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
Suggested-by: Mat Martineau <martineau@xxxxxxxxxx>
Co-developed-by: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>
Signed-off-by: Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx>
Acked-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
---
net/mptcp/options.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index 355f798d575a..a9801cfe7d15 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -442,7 +442,6 @@ static void clear_3rdack_retransmission(struct sock *sk)
static bool mptcp_established_options_mp(struct sock *sk, struct sk_buff *skb,
bool snd_data_fin_enable,
unsigned int *size,
- unsigned int remaining,
struct mptcp_out_options *opts)
{
struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk);
@@ -556,7 +555,6 @@ static void mptcp_write_data_fin(struct mptcp_subflow_context *subflow,
static bool mptcp_established_options_dss(struct sock *sk, struct sk_buff *skb,
bool snd_data_fin_enable,
unsigned int *size,
- unsigned int remaining,
struct mptcp_out_options *opts)
{
struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk);
@@ -580,7 +578,6 @@ static bool mptcp_established_options_dss(struct sock *sk, struct sk_buff *skb,
opts->ext_copy = *mpext;
}
- remaining -= map_size;
dss_size = map_size;
if (skb && snd_data_fin_enable)
mptcp_write_data_fin(subflow, skb, &opts->ext_copy);
@@ -851,9 +848,9 @@ bool mptcp_established_options(struct sock *sk, struct sk_buff *skb,
}
snd_data_fin = mptcp_data_fin_enabled(msk);
- if (mptcp_established_options_mp(sk, skb, snd_data_fin, &opt_size, remaining, opts))
+ if (mptcp_established_options_mp(sk, skb, snd_data_fin, &opt_size, opts))
ret = true;
- else if (mptcp_established_options_dss(sk, skb, snd_data_fin, &opt_size, remaining, opts)) {
+ else if (mptcp_established_options_dss(sk, skb, snd_data_fin, &opt_size, opts)) {
unsigned int mp_fail_size;
ret = true;
--
2.39.2
