Orange Pi5 kernel

Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards

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^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /* Multipath TCP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (c) 2019, Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #define pr_fmt(fmt) "MPTCP: " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <net/tcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <net/mptcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include "protocol.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) /* path manager command handlers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) int mptcp_pm_announce_addr(struct mptcp_sock *msk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 			   const struct mptcp_addr_info *addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 			   bool echo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	pr_debug("msk=%p, local_id=%d", msk, addr->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	msk->pm.local = *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	WRITE_ONCE(msk->pm.add_addr_echo, echo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	WRITE_ONCE(msk->pm.add_addr_signal, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) int mptcp_pm_remove_addr(struct mptcp_sock *msk, u8 local_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	pr_debug("msk=%p, local_id=%d", msk, local_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	msk->pm.rm_id = local_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	WRITE_ONCE(msk->pm.rm_addr_signal, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) int mptcp_pm_remove_subflow(struct mptcp_sock *msk, u8 local_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	pr_debug("msk=%p, local_id=%d", msk, local_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	spin_lock_bh(&msk->pm.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	mptcp_pm_nl_rm_subflow_received(msk, local_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	spin_unlock_bh(&msk->pm.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) /* path manager event handlers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) void mptcp_pm_new_connection(struct mptcp_sock *msk, int server_side)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	struct mptcp_pm_data *pm = &msk->pm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	pr_debug("msk=%p, token=%u side=%d", msk, msk->token, server_side);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	WRITE_ONCE(pm->server_side, server_side);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) bool mptcp_pm_allow_new_subflow(struct mptcp_sock *msk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	struct mptcp_pm_data *pm = &msk->pm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	pr_debug("msk=%p subflows=%d max=%d allow=%d", msk, pm->subflows,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		 pm->subflows_max, READ_ONCE(pm->accept_subflow));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	/* try to avoid acquiring the lock below */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	if (!READ_ONCE(pm->accept_subflow))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	spin_lock_bh(&pm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	if (READ_ONCE(pm->accept_subflow)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		ret = pm->subflows < pm->subflows_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		if (ret && ++pm->subflows == pm->subflows_max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 			WRITE_ONCE(pm->accept_subflow, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	spin_unlock_bh(&pm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) /* return true if the new status bit is currently cleared, that is, this event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81)  * can be server, eventually by an already scheduled work
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) static bool mptcp_pm_schedule_work(struct mptcp_sock *msk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 				   enum mptcp_pm_status new_status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	pr_debug("msk=%p status=%x new=%lx", msk, msk->pm.status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		 BIT(new_status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	if (msk->pm.status & BIT(new_status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	msk->pm.status |= BIT(new_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	if (schedule_work(&msk->work))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		sock_hold((struct sock *)msk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) void mptcp_pm_fully_established(struct mptcp_sock *msk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	struct mptcp_pm_data *pm = &msk->pm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	pr_debug("msk=%p", msk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	/* try to avoid acquiring the lock below */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	if (!READ_ONCE(pm->work_pending))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	spin_lock_bh(&pm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	if (READ_ONCE(pm->work_pending))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		mptcp_pm_schedule_work(msk, MPTCP_PM_ESTABLISHED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	spin_unlock_bh(&pm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) void mptcp_pm_connection_closed(struct mptcp_sock *msk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	pr_debug("msk=%p", msk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) void mptcp_pm_subflow_established(struct mptcp_sock *msk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 				  struct mptcp_subflow_context *subflow)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	struct mptcp_pm_data *pm = &msk->pm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	pr_debug("msk=%p", msk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	if (!READ_ONCE(pm->work_pending))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	spin_lock_bh(&pm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	if (READ_ONCE(pm->work_pending))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		mptcp_pm_schedule_work(msk, MPTCP_PM_SUBFLOW_ESTABLISHED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	spin_unlock_bh(&pm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) void mptcp_pm_subflow_closed(struct mptcp_sock *msk, u8 id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	pr_debug("msk=%p", msk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) void mptcp_pm_add_addr_received(struct mptcp_sock *msk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 				const struct mptcp_addr_info *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	struct mptcp_pm_data *pm = &msk->pm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	pr_debug("msk=%p remote_id=%d accept=%d", msk, addr->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		 READ_ONCE(pm->accept_addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	spin_lock_bh(&pm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	if (!READ_ONCE(pm->accept_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		mptcp_pm_announce_addr(msk, addr, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	else if (mptcp_pm_schedule_work(msk, MPTCP_PM_ADD_ADDR_RECEIVED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		pm->remote = *addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	spin_unlock_bh(&pm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) void mptcp_pm_rm_addr_received(struct mptcp_sock *msk, u8 rm_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	struct mptcp_pm_data *pm = &msk->pm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	pr_debug("msk=%p remote_id=%d", msk, rm_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	spin_lock_bh(&pm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	mptcp_pm_schedule_work(msk, MPTCP_PM_RM_ADDR_RECEIVED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	pm->rm_id = rm_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	spin_unlock_bh(&pm->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /* path manager helpers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 			      struct mptcp_addr_info *saddr, bool *echo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	int ret = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	spin_lock_bh(&msk->pm.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	/* double check after the lock is acquired */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	if (!mptcp_pm_should_add_signal(msk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	*echo = READ_ONCE(msk->pm.add_addr_echo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	if (remaining < mptcp_add_addr_len(msk->pm.local.family, *echo))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	*saddr = msk->pm.local;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	WRITE_ONCE(msk->pm.add_addr_signal, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	ret = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	spin_unlock_bh(&msk->pm.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 			     u8 *rm_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	int ret = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	spin_lock_bh(&msk->pm.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	/* double check after the lock is acquired */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	if (!mptcp_pm_should_rm_signal(msk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	if (remaining < TCPOLEN_MPTCP_RM_ADDR_BASE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	*rm_id = msk->pm.rm_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	WRITE_ONCE(msk->pm.rm_addr_signal, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	ret = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	spin_unlock_bh(&msk->pm.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	return mptcp_pm_nl_get_local_id(msk, skc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) void mptcp_pm_data_init(struct mptcp_sock *msk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	msk->pm.add_addr_signaled = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	msk->pm.add_addr_accepted = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	msk->pm.local_addr_used = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	msk->pm.subflows = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	msk->pm.rm_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	WRITE_ONCE(msk->pm.work_pending, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	WRITE_ONCE(msk->pm.add_addr_signal, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	WRITE_ONCE(msk->pm.rm_addr_signal, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	WRITE_ONCE(msk->pm.accept_addr, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	WRITE_ONCE(msk->pm.accept_subflow, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	WRITE_ONCE(msk->pm.add_addr_echo, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	msk->pm.status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	spin_lock_init(&msk->pm.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	INIT_LIST_HEAD(&msk->pm.anno_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	mptcp_pm_nl_data_init(msk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) void __init mptcp_pm_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	mptcp_pm_nl_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }