lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 11 Jul 2022 12:16:30 -0700 From: Mat Martineau <mathew.j.martineau@...ux.intel.com> To: netdev@...r.kernel.org Cc: Paolo Abeni <pabeni@...hat.com>, davem@...emloft.net, kuba@...nel.org, edumazet@...gle.com, matthieu.baerts@...sares.net, mptcp@...ts.linux.dev, Mat Martineau <mathew.j.martineau@...ux.intel.com> Subject: [PATCH net-next 2/5] mptcp: address lookup improvements From: Paolo Abeni <pabeni@...hat.com> When looking-up a socket address in the endpoint list, we must prefer port-based matches over address only match. Ensure that port-based endpoints are listed first, using head insertion for them. Additionally be sure that only port-based endpoints carry a non zero port number. Reviewed-by: Mat Martineau <mathew.j.martineau@...ux.intel.com> Signed-off-by: Paolo Abeni <pabeni@...hat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@...ux.intel.com> --- net/mptcp/pm_netlink.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 8e1d3aec94da..fe8e22aff7d2 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -413,7 +413,7 @@ static bool lookup_address_in_vec(const struct mptcp_addr_info *addrs, unsigned int i; for (i = 0; i < nr; i++) { - if (mptcp_addresses_equal(&addrs[i], addr, addr->port)) + if (addrs[i].id == addr->id) return true; } @@ -449,7 +449,8 @@ static unsigned int fill_remote_addresses_vec(struct mptcp_sock *msk, bool fullm mptcp_for_each_subflow(msk, subflow) { ssk = mptcp_subflow_tcp_sock(subflow); remote_address((struct sock_common *)ssk, &addrs[i]); - if (deny_id0 && mptcp_addresses_equal(&addrs[i], &remote, false)) + addrs[i].id = subflow->remote_id; + if (deny_id0 && !addrs[i].id) continue; if (!lookup_address_in_vec(addrs, i, &addrs[i]) && @@ -919,10 +920,11 @@ static int mptcp_pm_nl_append_new_local_addr(struct pm_nl_pernet *pernet, /* do not insert duplicate address, differentiate on port only * singled addresses */ + if (!address_use_port(entry)) + entry->addr.port = 0; list_for_each_entry(cur, &pernet->local_addr_list, list) { if (mptcp_addresses_equal(&cur->addr, &entry->addr, - address_use_port(entry) && - address_use_port(cur))) { + cur->addr.port || entry->addr.port)) { /* allow replacing the exiting endpoint only if such * endpoint is an implicit one and the user-space * did not provide an endpoint id @@ -968,7 +970,10 @@ static int mptcp_pm_nl_append_new_local_addr(struct pm_nl_pernet *pernet, } pernet->addrs++; - list_add_tail_rcu(&entry->list, &pernet->local_addr_list); + if (!entry->addr.port) + list_add_tail_rcu(&entry->list, &pernet->local_addr_list); + else + list_add_rcu(&entry->list, &pernet->local_addr_list); ret = entry->addr.id; out: -- 2.37.0
Powered by blists - more mailing lists