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| author | Geliang Tang <geliangtang@gmail.com> | 2021-03-13 04:16:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-13 04:47:45 +0300 |
| commit | ddd14bb85dd8d26e10a2ce4f9606879b94e81888 (patch) | |
| tree | 00d288dad7173becb7d1fa54c6a2d0b2d2c1df0e /net/mptcp/pm_netlink.c | |
| parent | d0b698ca9a27e90b641804fc2fb49ae3719c0904 (diff) | |
| download | linux-ddd14bb85dd8d26e10a2ce4f9606879b94e81888.tar.xz | |
mptcp: remove multi subflows in PM
This patch dealt with removing multi subflows in PM:
In mptcp_pm_remove_subflow, changed the input parameter local_id as an
list of removing address ids, and passed the list to
mptcp_pm_nl_rm_subflow_received.
In mptcp_pm_nl_rm_subflow_received, iterated each address id from the
received ids list. Then shut down and closed each address id's subsocket.
In mptcp_nl_remove_subflow_and_signal_addr, put the single address id into
an ids list, and passed it to mptcp_pm_remove_subflow.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp/pm_netlink.c')
| -rw-r--r-- | net/mptcp/pm_netlink.c | 42 |
1 files changed, 25 insertions, 17 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index e8135702af39..769a05d836da 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -645,39 +645,44 @@ void mptcp_pm_nl_work(struct mptcp_sock *msk) spin_unlock_bh(&msk->pm.lock); } -void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk, u8 rm_id) +void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk, + const struct mptcp_rm_list *rm_list) { struct mptcp_subflow_context *subflow, *tmp; struct sock *sk = (struct sock *)msk; + u8 i; - pr_debug("subflow rm_id %d", rm_id); + pr_debug("subflow rm_list_nr %d", rm_list->nr); msk_owned_by_me(msk); - if (!rm_id) + if (!rm_list->nr) return; if (list_empty(&msk->conn_list)) return; - list_for_each_entry_safe(subflow, tmp, &msk->conn_list, node) { - struct sock *ssk = mptcp_subflow_tcp_sock(subflow); - int how = RCV_SHUTDOWN | SEND_SHUTDOWN; + for (i = 0; i < rm_list->nr; i++) { + list_for_each_entry_safe(subflow, tmp, &msk->conn_list, node) { + struct sock *ssk = mptcp_subflow_tcp_sock(subflow); + int how = RCV_SHUTDOWN | SEND_SHUTDOWN; - if (rm_id != subflow->local_id) - continue; + if (rm_list->ids[i] != subflow->local_id) + continue; - spin_unlock_bh(&msk->pm.lock); - mptcp_subflow_shutdown(sk, ssk, how); - mptcp_close_ssk(sk, ssk, subflow); - spin_lock_bh(&msk->pm.lock); + pr_debug(" -> subflow rm_list_ids[%d]=%u", i, rm_list->ids[i]); + spin_unlock_bh(&msk->pm.lock); + mptcp_subflow_shutdown(sk, ssk, how); + mptcp_close_ssk(sk, ssk, subflow); + spin_lock_bh(&msk->pm.lock); - msk->pm.local_addr_used--; - msk->pm.subflows--; + msk->pm.local_addr_used--; + msk->pm.subflows--; - __MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_RMSUBFLOW); + __MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_RMSUBFLOW); - break; + break; + } } } @@ -1094,9 +1099,12 @@ static int mptcp_nl_remove_subflow_and_signal_addr(struct net *net, { struct mptcp_sock *msk; long s_slot = 0, s_num = 0; + struct mptcp_rm_list list = { .nr = 0 }; pr_debug("remove_id=%d", addr->id); + list.ids[list.nr++] = addr->id; + while ((msk = mptcp_token_iter_next(net, &s_slot, &s_num)) != NULL) { struct sock *sk = (struct sock *)msk; bool remove_subflow; @@ -1110,7 +1118,7 @@ static int mptcp_nl_remove_subflow_and_signal_addr(struct net *net, remove_subflow = lookup_subflow_by_saddr(&msk->conn_list, addr); mptcp_pm_remove_anno_addr(msk, addr, remove_subflow); if (remove_subflow) - mptcp_pm_remove_subflow(msk, addr->id); + mptcp_pm_remove_subflow(msk, &list); release_sock(sk); next: |