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Merge branch 'mptcp-misc-cleanups'

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Matthieu Baerts says:

====================
mptcp: misc. cleanups

Here is a small collection of miscellaneous cleanups:

- Patch 1 uses an MPTCP helper, instead of a TCP one, to do the same
  thing.

- Patch 2 adds a similar MPTCP helper, instead of using a TCP one
  directly.

- Patch 3 uses more appropriated terms in comments.

Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
====================

Link: https://lore.kernel.org/r/20240605-upstream-net-next-20240604-misc-cleanup-v1-0-ae2e35c3ecc5@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Paolo Abeni
2024-06-06 15:13:48 +02:00
parent 9b6a30febd 92f74c1e05
commit fe300258a5
4 changed files with 11 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
net/mptcp/protocol.c
View File

@@ -2040,13 +2040,13 @@ static void mptcp_rcv_space_adjust(struct mptcp_sock *msk, int copied)
do_div(grow, msk->rcvq_space.space);
rcvwin += (grow << 1);
rcvbuf = min_t(u64, __tcp_space_from_win(scaling_ratio, rcvwin),
rcvbuf = min_t(u64, mptcp_space_from_win(sk, rcvwin),
READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_rmem[2]));
if (rcvbuf > sk->sk_rcvbuf) {
u32 window_clamp;
window_clamp = __tcp_win_from_space(scaling_ratio, rcvbuf);
window_clamp = mptcp_win_from_space(sk, rcvbuf);
WRITE_ONCE(sk->sk_rcvbuf, rcvbuf);
/* Make subflows follow along. If we do not do this, we
@@ -2202,7 +2202,7 @@ static int mptcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
if (skb_queue_empty(&msk->receive_queue) && __mptcp_move_skbs(msk))
continue;
/* only the master socket status is relevant here. The exit
/* only the MPTCP socket status is relevant here. The exit
* conditions mirror closely tcp_recvmsg()
*/
if (copied >= target)
@@ -3521,7 +3521,7 @@ void mptcp_subflow_process_delegated(struct sock *ssk, long status)
static int mptcp_hash(struct sock *sk)
{
/* should never be called,
* we hash the TCP subflows not the master socket
* we hash the TCP subflows not the MPTCP socket
*/
WARN_ON_ONCE(1);
return 0;

5
net/mptcp/protocol.h
View File

@@ -386,6 +386,11 @@ static inline int mptcp_win_from_space(const struct sock *sk, int space)
return __tcp_win_from_space(mptcp_sk(sk)->scaling_ratio, space);
}
static inline int mptcp_space_from_win(const struct sock *sk, int win)
{
return __tcp_space_from_win(mptcp_sk(sk)->scaling_ratio, win);
}
static inline int __mptcp_space(const struct sock *sk)
{
return mptcp_win_from_space(sk, READ_ONCE(sk->sk_rcvbuf) - __mptcp_rmem(sk));

2
net/mptcp/sockopt.c
View File

@@ -1579,7 +1579,7 @@ int mptcp_set_rcvlowat(struct sock *sk, int val)
if (sk->sk_userlocks & SOCK_RCVBUF_LOCK)
return 0;
space = __tcp_space_from_win(mptcp_sk(sk)->scaling_ratio, val);
space = mptcp_space_from_win(sk, val);
if (space <= sk->sk_rcvbuf)
return 0;

2
net/mptcp/subflow.c
View File

@@ -1719,7 +1719,7 @@ int mptcp_subflow_create_socket(struct sock *sk, unsigned short family,
mptcp_sockopt_sync_locked(mptcp_sk(sk), sf->sk);
release_sock(sf->sk);
/* the newly created socket really belongs to the owning MPTCP master
/* the newly created socket really belongs to the owning MPTCP
* socket, even if for additional subflows the allocation is performed
* by a kernel workqueue. Adjust inode references, so that the
* procfs/diag interfaces really show this one belonging to the correct