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| author | Xin Long <lucien.xin@gmail.com> | 2022-11-16 23:01:20 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-11-18 14:42:54 +0300 |
| commit | 0af03170637f47fb5cc6501d4b2dcbf1c14772a9 (patch) | |
| tree | 5307ec19ec98002dc14ac83b5b0a8699f841edaa /net/sctp/socket.c | |
| parent | 33e93ed2209d5971043bed41dd194bc583b57ef3 (diff) | |
| download | linux-0af03170637f47fb5cc6501d4b2dcbf1c14772a9.tar.xz | |
sctp: add dif and sdif check in asoc and ep lookup
This patch at first adds a pernet global l3mdev_accept to decide if it
accepts the packets from a l3mdev when a SCTP socket doesn't bind to
any interface. It's set to 1 to avoid any possible incompatible issue,
and in next patch, a sysctl will be introduced to allow to change it.
Then similar to inet/udp_sk_bound_dev_eq(), sctp_sk_bound_dev_eq() is
added to check either dif or sdif is equal to sk_bound_dev_if, and to
check sid is 0 or l3mdev_accept is 1 if sk_bound_dev_if is not set.
This function is used to match a association or a endpoint, namely
called by sctp_addrs_lookup_transport() and sctp_endpoint_is_match().
All functions that needs updating are:
sctp_rcv():
asoc:
__sctp_rcv_lookup()
__sctp_lookup_association() -> sctp_addrs_lookup_transport()
__sctp_rcv_lookup_harder()
__sctp_rcv_init_lookup()
__sctp_lookup_association() -> sctp_addrs_lookup_transport()
__sctp_rcv_walk_lookup()
__sctp_rcv_asconf_lookup()
__sctp_lookup_association() -> sctp_addrs_lookup_transport()
ep:
__sctp_rcv_lookup_endpoint() -> sctp_endpoint_is_match()
sctp_connect():
sctp_endpoint_is_peeled_off()
__sctp_lookup_association()
sctp_has_association()
sctp_lookup_association()
__sctp_lookup_association() -> sctp_addrs_lookup_transport()
sctp_diag_dump_one():
sctp_transport_lookup_process() -> sctp_addrs_lookup_transport()
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/socket.c')
| -rw-r--r-- | net/sctp/socket.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 4306164238ef..5acbdf0d38f3 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -5315,14 +5315,14 @@ EXPORT_SYMBOL_GPL(sctp_for_each_endpoint); int sctp_transport_lookup_process(sctp_callback_t cb, struct net *net, const union sctp_addr *laddr, - const union sctp_addr *paddr, void *p) + const union sctp_addr *paddr, void *p, int dif) { struct sctp_transport *transport; struct sctp_endpoint *ep; int err = -ENOENT; rcu_read_lock(); - transport = sctp_addrs_lookup_transport(net, laddr, paddr); + transport = sctp_addrs_lookup_transport(net, laddr, paddr, dif, dif); if (!transport) { rcu_read_unlock(); return err; |