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mptcp: move pm netlink work into pm_netlink
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Allows to make some functions static and avoids acquire of the pm
spinlock in protocol.c.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Florian Westphal authored and David S. Miller committed Feb 13, 2021
1 parent 0a82c37 commit e980143
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Showing 3 changed files with 42 additions and 42 deletions.
45 changes: 40 additions & 5 deletions net/mptcp/pm_netlink.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,8 @@ struct pm_nl_pernet {
#define MPTCP_PM_ADDR_MAX 8
#define ADD_ADDR_RETRANS_MAX 3

static void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk);

static bool addresses_equal(const struct mptcp_addr_info *a,
struct mptcp_addr_info *b, bool use_port)
{
Expand Down Expand Up @@ -448,17 +450,17 @@ static void mptcp_pm_create_subflow_or_signal_addr(struct mptcp_sock *msk)
}
}

void mptcp_pm_nl_fully_established(struct mptcp_sock *msk)
static void mptcp_pm_nl_fully_established(struct mptcp_sock *msk)
{
mptcp_pm_create_subflow_or_signal_addr(msk);
}

void mptcp_pm_nl_subflow_established(struct mptcp_sock *msk)
static void mptcp_pm_nl_subflow_established(struct mptcp_sock *msk)
{
mptcp_pm_create_subflow_or_signal_addr(msk);
}

void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk)
static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk)
{
struct sock *sk = (struct sock *)msk;
unsigned int add_addr_accept_max;
Expand Down Expand Up @@ -498,7 +500,7 @@ void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk)
mptcp_pm_nl_add_addr_send_ack(msk);
}

void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk)
static void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk)
{
struct mptcp_subflow_context *subflow;

Expand Down Expand Up @@ -568,7 +570,7 @@ int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk,
return -EINVAL;
}

void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk)
static void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk)
{
struct mptcp_subflow_context *subflow, *tmp;
struct sock *sk = (struct sock *)msk;
Expand Down Expand Up @@ -605,6 +607,39 @@ void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk)
}
}

void mptcp_pm_nl_work(struct mptcp_sock *msk)
{
struct mptcp_pm_data *pm = &msk->pm;

msk_owned_by_me(msk);

spin_lock_bh(&msk->pm.lock);

pr_debug("msk=%p status=%x", msk, pm->status);
if (pm->status & BIT(MPTCP_PM_ADD_ADDR_RECEIVED)) {
pm->status &= ~BIT(MPTCP_PM_ADD_ADDR_RECEIVED);
mptcp_pm_nl_add_addr_received(msk);
}
if (pm->status & BIT(MPTCP_PM_ADD_ADDR_SEND_ACK)) {
pm->status &= ~BIT(MPTCP_PM_ADD_ADDR_SEND_ACK);
mptcp_pm_nl_add_addr_send_ack(msk);
}
if (pm->status & BIT(MPTCP_PM_RM_ADDR_RECEIVED)) {
pm->status &= ~BIT(MPTCP_PM_RM_ADDR_RECEIVED);
mptcp_pm_nl_rm_addr_received(msk);
}
if (pm->status & BIT(MPTCP_PM_ESTABLISHED)) {
pm->status &= ~BIT(MPTCP_PM_ESTABLISHED);
mptcp_pm_nl_fully_established(msk);
}
if (pm->status & BIT(MPTCP_PM_SUBFLOW_ESTABLISHED)) {
pm->status &= ~BIT(MPTCP_PM_SUBFLOW_ESTABLISHED);
mptcp_pm_nl_subflow_established(msk);
}

spin_unlock_bh(&msk->pm.lock);
}

void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk, u8 rm_id)
{
struct mptcp_subflow_context *subflow, *tmp;
Expand Down
33 changes: 1 addition & 32 deletions net/mptcp/protocol.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2152,37 +2152,6 @@ static unsigned int mptcp_sync_mss(struct sock *sk, u32 pmtu)
return 0;
}

static void pm_work(struct mptcp_sock *msk)
{
struct mptcp_pm_data *pm = &msk->pm;

spin_lock_bh(&msk->pm.lock);

pr_debug("msk=%p status=%x", msk, pm->status);
if (pm->status & BIT(MPTCP_PM_ADD_ADDR_RECEIVED)) {
pm->status &= ~BIT(MPTCP_PM_ADD_ADDR_RECEIVED);
mptcp_pm_nl_add_addr_received(msk);
}
if (pm->status & BIT(MPTCP_PM_ADD_ADDR_SEND_ACK)) {
pm->status &= ~BIT(MPTCP_PM_ADD_ADDR_SEND_ACK);
mptcp_pm_nl_add_addr_send_ack(msk);
}
if (pm->status & BIT(MPTCP_PM_RM_ADDR_RECEIVED)) {
pm->status &= ~BIT(MPTCP_PM_RM_ADDR_RECEIVED);
mptcp_pm_nl_rm_addr_received(msk);
}
if (pm->status & BIT(MPTCP_PM_ESTABLISHED)) {
pm->status &= ~BIT(MPTCP_PM_ESTABLISHED);
mptcp_pm_nl_fully_established(msk);
}
if (pm->status & BIT(MPTCP_PM_SUBFLOW_ESTABLISHED)) {
pm->status &= ~BIT(MPTCP_PM_SUBFLOW_ESTABLISHED);
mptcp_pm_nl_subflow_established(msk);
}

spin_unlock_bh(&msk->pm.lock);
}

static void __mptcp_close_subflow(struct mptcp_sock *msk)
{
struct mptcp_subflow_context *subflow, *tmp;
Expand Down Expand Up @@ -2271,7 +2240,7 @@ static void mptcp_worker(struct work_struct *work)
__mptcp_close_subflow(msk);

if (msk->pm.status)
pm_work(msk);
mptcp_pm_nl_work(msk);

if (test_and_clear_bit(MPTCP_WORK_EOF, &msk->flags))
mptcp_check_for_eof(msk);
Expand Down
6 changes: 1 addition & 5 deletions net/mptcp/protocol.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -713,11 +713,7 @@ int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc);

void __init mptcp_pm_nl_init(void);
void mptcp_pm_nl_data_init(struct mptcp_sock *msk);
void mptcp_pm_nl_fully_established(struct mptcp_sock *msk);
void mptcp_pm_nl_subflow_established(struct mptcp_sock *msk);
void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk);
void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk);
void mptcp_pm_nl_rm_addr_received(struct mptcp_sock *msk);
void mptcp_pm_nl_work(struct mptcp_sock *msk);
void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk, u8 rm_id);
int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct sock_common *skc);
unsigned int mptcp_pm_get_add_addr_signal_max(struct mptcp_sock *msk);
Expand Down

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