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mptcp: drop flags and ifindex arguments

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This patch added a new helper mptcp_pm_get_flags_and_ifindex_by_id(),
and used it in __mptcp_subflow_connect() to get the flags and ifindex
values.

Then the two arguments flags and ifindex of __mptcp_subflow_connect()
can be dropped.

Signed-off-by: Geliang Tang <geliangtang@xiaomi.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 2021-08-17 15:07:22 -07:00 committed by David S. Miller
parent 3349d3625d
commit ee285257a9
3 changed files with 31 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
net/mptcp/pm_netlink.c
View File

@ -462,8 +462,7 @@ static void mptcp_pm_create_subflow_or_signal_addr(struct mptcp_sock *msk)
check_work_pending(msk);
remote_address((struct sock_common *)sk, &remote);
spin_unlock_bh(&msk->pm.lock);
__mptcp_subflow_connect(sk, &local->addr, &remote,
local->flags, local->ifindex);
__mptcp_subflow_connect(sk, &local->addr, &remote);
spin_lock_bh(&msk->pm.lock);
return;
}
@ -518,7 +517,7 @@ static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk)
local.family = remote.family;
spin_unlock_bh(&msk->pm.lock);
__mptcp_subflow_connect(sk, &local, &remote, 0, 0);
__mptcp_subflow_connect(sk, &local, &remote);
spin_lock_bh(&msk->pm.lock);
add_addr_echo:
@ -1105,6 +1104,27 @@ __lookup_addr_by_id(struct pm_nl_pernet *pernet, unsigned int id)
return NULL;
}
int mptcp_pm_get_flags_and_ifindex_by_id(struct net *net, unsigned int id,
u8 *flags, int *ifindex)
{
struct mptcp_pm_addr_entry *entry;
*flags = 0;
*ifindex = 0;
if (id) {
rcu_read_lock();
entry = __lookup_addr_by_id(net_generic(net, pm_nl_pernet_id), id);
if (entry) {
*flags = entry->flags;
*ifindex = entry->ifindex;
}
rcu_read_unlock();
}
return 0;
}
static bool remove_anno_list_by_saddr(struct mptcp_sock *msk,
struct mptcp_addr_info *addr)
{

5
net/mptcp/protocol.h
View File

@ -577,8 +577,7 @@ struct socket *__mptcp_nmpc_socket(const struct mptcp_sock *msk);
/* called with sk socket lock held */
int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_addr_info *loc,
const struct mptcp_addr_info *remote,
u8 flags, int ifindex);
const struct mptcp_addr_info *remote);
int mptcp_subflow_create_socket(struct sock *sk, struct socket **new_sock);
void mptcp_info2sockaddr(const struct mptcp_addr_info *info,
struct sockaddr_storage *addr,
@ -733,6 +732,8 @@ mptcp_pm_del_add_timer(struct mptcp_sock *msk,
struct mptcp_pm_add_entry *
mptcp_lookup_anno_list_by_saddr(struct mptcp_sock *msk,
struct mptcp_addr_info *addr);
int mptcp_pm_get_flags_and_ifindex_by_id(struct net *net, unsigned int id,
u8 *flags, int *ifindex);
int mptcp_pm_announce_addr(struct mptcp_sock *msk,
const struct mptcp_addr_info *addr,

7
net/mptcp/subflow.c
View File

@ -1355,8 +1355,7 @@ void mptcp_info2sockaddr(const struct mptcp_addr_info *info,
}
int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_addr_info *loc,
const struct mptcp_addr_info *remote,
u8 flags, int ifindex)
const struct mptcp_addr_info *remote)
{
struct mptcp_sock *msk = mptcp_sk(sk);
struct mptcp_subflow_context *subflow;
@ -1367,6 +1366,8 @@ int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_addr_info *loc,
struct sock *ssk;
u32 remote_token;
int addrlen;
int ifindex;
u8 flags;
int err;
if (!mptcp_is_fully_established(sk))
@ -1390,6 +1391,8 @@ int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_addr_info *loc,
local_id = err;
}
mptcp_pm_get_flags_and_ifindex_by_id(sock_net(sk), local_id,
&flags, &ifindex);
subflow->remote_key = msk->remote_key;
subflow->local_key = msk->local_key;
subflow->token = msk->token;