diff options
Diffstat (limited to 'net/mptcp/pm_kernel.c')
| -rw-r--r-- | net/mptcp/pm_kernel.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/net/mptcp/pm_kernel.c b/net/mptcp/pm_kernel.c index 740f0b20b941..92f7419485a8 100644 --- a/net/mptcp/pm_kernel.c +++ b/net/mptcp/pm_kernel.c @@ -21,7 +21,7 @@ struct pm_nl_pernet { unsigned int addrs; unsigned int stale_loss_cnt; unsigned int endp_signal_max; - unsigned int add_addr_accept_max; + unsigned int limit_add_addr_accepted; unsigned int local_addr_max; unsigned int limit_extra_subflows; unsigned int next_id; @@ -54,13 +54,13 @@ unsigned int mptcp_pm_get_endp_signal_max(const struct mptcp_sock *msk) } EXPORT_SYMBOL_GPL(mptcp_pm_get_endp_signal_max); -unsigned int mptcp_pm_get_add_addr_accept_max(const struct mptcp_sock *msk) +unsigned int mptcp_pm_get_limit_add_addr_accepted(const struct mptcp_sock *msk) { struct pm_nl_pernet *pernet = pm_nl_get_pernet_from_msk(msk); - return READ_ONCE(pernet->add_addr_accept_max); + return READ_ONCE(pernet->limit_add_addr_accepted); } -EXPORT_SYMBOL_GPL(mptcp_pm_get_add_addr_accept_max); +EXPORT_SYMBOL_GPL(mptcp_pm_get_limit_add_addr_accepted); unsigned int mptcp_pm_get_limit_extra_subflows(const struct mptcp_sock *msk) { @@ -547,16 +547,16 @@ static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk) struct mptcp_pm_local locals[MPTCP_PM_ADDR_MAX]; struct sock *sk = (struct sock *)msk; unsigned int limit_extra_subflows; - unsigned int add_addr_accept_max; + unsigned int limit_add_addr_accepted; struct mptcp_addr_info remote; bool sf_created = false; int i, nr; - add_addr_accept_max = mptcp_pm_get_add_addr_accept_max(msk); + limit_add_addr_accepted = mptcp_pm_get_limit_add_addr_accepted(msk); limit_extra_subflows = mptcp_pm_get_limit_extra_subflows(msk); pr_debug("accepted %d:%d remote family %d\n", - msk->pm.add_addr_accepted, add_addr_accept_max, + msk->pm.add_addr_accepted, limit_add_addr_accepted, msk->pm.remote.family); remote = msk->pm.remote; @@ -587,7 +587,7 @@ static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk) /* add_addr_accepted is not decr for ID 0 */ if (remote.id) msk->pm.add_addr_accepted++; - if (msk->pm.add_addr_accepted >= add_addr_accept_max || + if (msk->pm.add_addr_accepted >= limit_add_addr_accepted || msk->pm.extra_subflows >= limit_extra_subflows) WRITE_ONCE(msk->pm.accept_addr, false); } @@ -596,10 +596,13 @@ static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk) void mptcp_pm_nl_rm_addr(struct mptcp_sock *msk, u8 rm_id) { if (rm_id && WARN_ON_ONCE(msk->pm.add_addr_accepted == 0)) { + unsigned int limit_add_addr_accepted = + mptcp_pm_get_limit_add_addr_accepted(msk); + /* Note: if the subflow has been closed before, this * add_addr_accepted counter will not be decremented. */ - if (--msk->pm.add_addr_accepted < mptcp_pm_get_add_addr_accept_max(msk)) + if (--msk->pm.add_addr_accepted < limit_add_addr_accepted) WRITE_ONCE(msk->pm.accept_addr, true); } } @@ -1282,7 +1285,7 @@ int mptcp_pm_nl_set_limits_doit(struct sk_buff *skb, struct genl_info *info) int ret; spin_lock_bh(&pernet->lock); - rcv_addrs = pernet->add_addr_accept_max; + rcv_addrs = pernet->limit_add_addr_accepted; ret = parse_limit(info, MPTCP_PM_ATTR_RCV_ADD_ADDRS, &rcv_addrs); if (ret) goto unlock; @@ -1292,7 +1295,7 @@ int mptcp_pm_nl_set_limits_doit(struct sk_buff *skb, struct genl_info *info) if (ret) goto unlock; - WRITE_ONCE(pernet->add_addr_accept_max, rcv_addrs); + WRITE_ONCE(pernet->limit_add_addr_accepted, rcv_addrs); WRITE_ONCE(pernet->limit_extra_subflows, subflows); unlock: @@ -1316,7 +1319,7 @@ int mptcp_pm_nl_get_limits_doit(struct sk_buff *skb, struct genl_info *info) goto fail; if (nla_put_u32(msg, MPTCP_PM_ATTR_RCV_ADD_ADDRS, - READ_ONCE(pernet->add_addr_accept_max))) + READ_ONCE(pernet->limit_add_addr_accepted))) goto fail; if (nla_put_u32(msg, MPTCP_PM_ATTR_SUBFLOWS, |