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mptcp: define more local variables sk 

'(struct sock *)msk' is used several times in mptcp_nl_cmd_announce(),
mptcp_nl_cmd_remove() or mptcp_userspace_pm_set_flags() in pm_userspace.c,
it's worth adding a local variable sk to point it.

Reviewed-by: Matthieu Baerts <matttbe@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/20231025-send-net-next-20231025-v1-8-db8f25f798eb@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Geliang Tang 2023-10-25 16:37:09 -07:00 committed by Jakub Kicinski
parent a6c85fc61c
commit 14cb0e0bf3
1 changed files with 20 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
net/mptcp/pm_userspace.c
View File

@ -152,6 +152,7 @@ int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info)
struct mptcp_pm_addr_entry addr_val;
struct mptcp_sock *msk;
int err = -EINVAL;
struct sock *sk;
u32 token_val;
if (!addr || !token) {
@ -167,6 +168,8 @@ int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info)
return err;
}
sk = (struct sock *)msk;
if (!mptcp_pm_is_userspace(msk)) {
GENL_SET_ERR_MSG(info, "invalid request; userspace PM not selected");
goto announce_err;
@ -190,7 +193,7 @@ int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info)
goto announce_err;
}
lock_sock((struct sock *)msk);
lock_sock(sk);
spin_lock_bh(&msk->pm.lock);
if (mptcp_pm_alloc_anno_list(msk, &addr_val.addr)) {
@ -200,11 +203,11 @@ int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info)
}
spin_unlock_bh(&msk->pm.lock);
release_sock((struct sock *)msk);
release_sock(sk);
err = 0;
announce_err:
sock_put((struct sock *)msk);
sock_put(sk);
return err;
}
@ -251,6 +254,7 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
struct mptcp_sock *msk;
LIST_HEAD(free_list);
int err = -EINVAL;
struct sock *sk;
u32 token_val;
u8 id_val;
@ -268,6 +272,8 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
return err;
}
sk = (struct sock *)msk;
if (!mptcp_pm_is_userspace(msk)) {
GENL_SET_ERR_MSG(info, "invalid request; userspace PM not selected");
goto remove_err;
@ -278,7 +284,7 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
goto remove_err;
}
lock_sock((struct sock *)msk);
lock_sock(sk);
list_for_each_entry(entry, &msk->pm.userspace_pm_local_addr_list, list) {
if (entry->addr.id == id_val) {
@ -289,7 +295,7 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
if (!match) {
GENL_SET_ERR_MSG(info, "address with specified id not found");
release_sock((struct sock *)msk);
release_sock(sk);
goto remove_err;
}
@ -297,15 +303,15 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
mptcp_pm_remove_addrs(msk, &free_list);
release_sock((struct sock *)msk);
release_sock(sk);
list_for_each_entry_safe(match, entry, &free_list, list) {
sock_kfree_s((struct sock *)msk, match, sizeof(*match));
sock_kfree_s(sk, match, sizeof(*match));
}
err = 0;
remove_err:
sock_put((struct sock *)msk);
sock_put(sk);
return err;
}
@ -518,6 +524,7 @@ int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token,
{
struct mptcp_sock *msk;
int ret = -EINVAL;
struct sock *sk;
u32 token_val;
token_val = nla_get_u32(token);
@ -526,6 +533,8 @@ int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token,
if (!msk)
return ret;
sk = (struct sock *)msk;
if (!mptcp_pm_is_userspace(msk))
goto set_flags_err;
@ -533,11 +542,11 @@ int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token,
rem->addr.family == AF_UNSPEC)
goto set_flags_err;
lock_sock((struct sock *)msk);
lock_sock(sk);
ret = mptcp_pm_nl_mp_prio_send_ack(msk, &loc->addr, &rem->addr, bkup);
release_sock((struct sock *)msk);
release_sock(sk);
set_flags_err:
sock_put((struct sock *)msk);
sock_put(sk);
return ret;
}