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mptcp: drop last_snd and MPTCP_RESET_SCHEDULER

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Since the burst check conditions have moved out of the function
mptcp_subflow_get_send(), it makes all msk->last_snd useless.
This patch drops them as well as the macro MPTCP_RESET_SCHEDULER.

Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <martineau@kernel.org>
Link: https://lore.kernel.org/r/20230821-upstream-net-next-20230818-v1-2-0c860fb256a8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Geliang Tang 2023-08-21 15:25:13 -07:00 committed by Jakub Kicinski
parent c5b4297dee
commit ebc1e08f01
4 changed files with 2 additions and 23 deletions
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9
net/mptcp/pm.c
View file

@ -299,15 +299,8 @@ void mptcp_pm_mp_prio_received(struct sock *ssk, u8 bkup)
pr_debug("subflow->backup=%d, bkup=%d\n", subflow->backup, bkup);
msk = mptcp_sk(sk);
if (subflow->backup != bkup) {
if (subflow->backup != bkup)
subflow->backup = bkup;
mptcp_data_lock(sk);
if (!sock_owned_by_user(sk))
msk->last_snd = NULL;
else
__set_bit(MPTCP_RESET_SCHEDULER, &msk->cb_flags);
mptcp_data_unlock(sk);
}
mptcp_event(MPTCP_EVENT_SUB_PRIORITY, msk, ssk, GFP_ATOMIC);
}

3
net/mptcp/pm_netlink.c
View file

@ -472,9 +472,6 @@ static void __mptcp_pm_send_ack(struct mptcp_sock *msk, struct mptcp_subflow_con
slow = lock_sock_fast(ssk);
if (prio) {
if (subflow->backup != backup)
msk->last_snd = NULL;
subflow->send_mp_prio = 1;
subflow->backup = backup;
subflow->request_bkup = backup;

11
net/mptcp/protocol.c
View file

@ -1438,16 +1438,13 @@ static struct sock *mptcp_subflow_get_send(struct mptcp_sock *msk)
burst = min_t(int, MPTCP_SEND_BURST_SIZE, mptcp_wnd_end(msk) - msk->snd_nxt);
wmem = READ_ONCE(ssk->sk_wmem_queued);
if (!burst) {
msk->last_snd = NULL;
if (!burst)
return ssk;
}
subflow = mptcp_subflow_ctx(ssk);
subflow->avg_pacing_rate = div_u64((u64)subflow->avg_pacing_rate * wmem +
READ_ONCE(ssk->sk_pacing_rate) * burst,
burst + wmem);
msk->last_snd = ssk;
msk->snd_burst = burst;
return ssk;
}
@ -2379,9 +2376,6 @@ static void __mptcp_close_ssk(struct sock *sk, struct sock *ssk,
WRITE_ONCE(msk->first, NULL);
out:
if (ssk == msk->last_snd)
msk->last_snd = NULL;
if (need_push)
__mptcp_push_pending(sk, 0);
}
@ -3046,7 +3040,6 @@ static int mptcp_disconnect(struct sock *sk, int flags)
* subflow
*/
mptcp_destroy_common(msk, MPTCP_CF_FASTCLOSE);
msk->last_snd = NULL;
WRITE_ONCE(msk->flags, 0);
msk->cb_flags = 0;
msk->push_pending = 0;
@ -3316,8 +3309,6 @@ static void mptcp_release_cb(struct sock *sk)
__mptcp_set_connected(sk);
if (__test_and_clear_bit(MPTCP_ERROR_REPORT, &msk->cb_flags))
__mptcp_error_report(sk);
if (__test_and_clear_bit(MPTCP_RESET_SCHEDULER, &msk->cb_flags))
msk->last_snd = NULL;
}
__mptcp_update_rmem(sk);

2
net/mptcp/protocol.h
View file

@ -123,7 +123,6 @@
#define MPTCP_RETRANSMIT 4
#define MPTCP_FLUSH_JOIN_LIST 5
#define MPTCP_CONNECTED 6
#define MPTCP_RESET_SCHEDULER 7
struct mptcp_skb_cb {
u64 map_seq;
@ -269,7 +268,6 @@ struct mptcp_sock {
u64 rcv_data_fin_seq;
u64 bytes_retrans;
int rmem_fwd_alloc;
struct sock *last_snd;
int snd_burst;
int old_wspace;
u64 recovery_snd_nxt; /* in recovery mode accept up to this seq;