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| author | Eric Dumazet <edumazet@google.com> | 2023-03-17 15:55:38 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-03-18 12:23:34 +0000 |
| commit | 403a40f2304d4730a780ab9d6a2b93d1e4ac39d2 (patch) | |
| tree | 9eb7c9b93e4d7a94703e9a1047bba34b0275164b /net/mptcp | |
| parent | c7154ca8e075cc456fe773879263b33ae307a59e (diff) | |
| download | linux-403a40f2304d4730a780ab9d6a2b93d1e4ac39d2.tar.gz linux-403a40f2304d4730a780ab9d6a2b93d1e4ac39d2.tar.bz2 linux-403a40f2304d4730a780ab9d6a2b93d1e4ac39d2.zip | |
mptcp: preserve const qualifier in mptcp_sk()
We can change mptcp_sk() to propagate its argument const qualifier,
thanks to container_of_const().
We need to change few things to avoid build errors:
mptcp_set_datafin_timeout() and mptcp_rtx_head() have to accept
non-const sk pointers.
@msk local variable in mptcp_pending_tail() must be const.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Matthieu Baerts <matthieu.baerts@tessares.net>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp')
| -rw-r--r-- | net/mptcp/protocol.c | 2 | ||||
| -rw-r--r-- | net/mptcp/protocol.h | 9 |
2 files changed, 4 insertions, 7 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 6738181b2977..2d26b9114373 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -459,7 +459,7 @@ static bool mptcp_pending_data_fin(struct sock *sk, u64 *seq) return false; } -static void mptcp_set_datafin_timeout(const struct sock *sk) +static void mptcp_set_datafin_timeout(struct sock *sk) { struct inet_connection_sock *icsk = inet_csk(sk); u32 retransmits; diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 339a6f072989..e1310bc113be 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -334,10 +334,7 @@ static inline void msk_owned_by_me(const struct mptcp_sock *msk) sock_owned_by_me((const struct sock *)msk); } -static inline struct mptcp_sock *mptcp_sk(const struct sock *sk) -{ - return (struct mptcp_sock *)sk; -} +#define mptcp_sk(ptr) container_of_const(ptr, struct mptcp_sock, sk.icsk_inet.sk) /* the msk socket don't use the backlog, also account for the bulk * free memory @@ -371,7 +368,7 @@ static inline struct mptcp_data_frag *mptcp_send_next(struct sock *sk) static inline struct mptcp_data_frag *mptcp_pending_tail(const struct sock *sk) { - struct mptcp_sock *msk = mptcp_sk(sk); + const struct mptcp_sock *msk = mptcp_sk(sk); if (!msk->first_pending) return NULL; @@ -382,7 +379,7 @@ static inline struct mptcp_data_frag *mptcp_pending_tail(const struct sock *sk) return list_last_entry(&msk->rtx_queue, struct mptcp_data_frag, list); } -static inline struct mptcp_data_frag *mptcp_rtx_head(const struct sock *sk) +static inline struct mptcp_data_frag *mptcp_rtx_head(struct sock *sk) { struct mptcp_sock *msk = mptcp_sk(sk); |