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mptcp: add csum_enabled in mptcp_sock

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This patch added a new member named csum_enabled in struct mptcp_sock,
used a dummy mptcp_is_checksum_enabled() helper to initialize it.

Also added a new member named mptcpi_csum_enabled in struct mptcp_info
to expose the csum_enabled flag.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geliang Tang 2021-06-17 16:46:07 -07:00 committed by David S. Miller
parent e7f3863c6d
commit 752e906732
4 changed files with 5 additions and 0 deletions
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1
include/uapi/linux/mptcp.h
View File

@ -105,6 +105,7 @@ struct mptcp_info {
__u64 mptcpi_rcv_nxt;
__u8 mptcpi_local_addr_used;
__u8 mptcpi_local_addr_max;
__u8 mptcpi_csum_enabled;
};
/*

1
net/mptcp/mptcp_diag.c
View File

@ -144,6 +144,7 @@ static void mptcp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
info->mptcpi_write_seq = READ_ONCE(msk->write_seq);
info->mptcpi_snd_una = READ_ONCE(msk->snd_una);
info->mptcpi_rcv_nxt = READ_ONCE(msk->ack_seq);
info->mptcpi_csum_enabled = READ_ONCE(msk->csum_enabled);
unlock_sock_fast(sk, slow);
}

1
net/mptcp/protocol.c
View File

@ -2453,6 +2453,7 @@ static int __mptcp_init_sock(struct sock *sk)
msk->ack_hint = NULL;
msk->first = NULL;
inet_csk(sk)->icsk_sync_mss = mptcp_sync_mss;
WRITE_ONCE(msk->csum_enabled, mptcp_is_checksum_enabled(sock_net(sk)));
mptcp_pm_data_init(msk);

2
net/mptcp/protocol.h
View File

@ -234,6 +234,7 @@ struct mptcp_sock {
bool snd_data_fin_enable;
bool rcv_fastclose;
bool use_64bit_ack; /* Set when we received a 64-bit DSN */
bool csum_enabled;
spinlock_t join_list_lock;
struct sock *ack_hint;
struct work_struct work;
@ -525,6 +526,7 @@ static inline void mptcp_subflow_delegated_done(struct mptcp_subflow_context *su
int mptcp_is_enabled(struct net *net);
unsigned int mptcp_get_add_addr_timeout(struct net *net);
static inline int mptcp_is_checksum_enabled(struct net *net) { return false; }
void mptcp_subflow_fully_established(struct mptcp_subflow_context *subflow,
struct mptcp_options_received *mp_opt);
bool mptcp_subflow_data_available(struct sock *sk);