diff options
| author | Xin Long | 2020-10-29 15:04:58 +0800 |
|---|---|---|
| committer | Jakub Kicinski | 2020-10-30 15:23:52 -0700 |
| commit | 965ae44412f8c0c19945b3f62bc945ad0b15a8aa (patch) | |
| tree | db151fd8b905d87d9b15a845a17339736881d2e6 /include/net/sctp | |
| parent | 527beb8ef9c02c11f8ca0d59fc46f7d081db1c33 (diff) | |
sctp: create udp4 sock and add its encap_rcv
This patch is to add the functions to create/release udp4 sock,
and set the sock's encap_rcv to process the incoming udp encap
sctp packets. In sctp_udp_rcv(), as we can see, all we need to
do is fix the transport header for sctp_rcv(), then it would
implement the part of rfc6951#section-5.4:
"When an encapsulated packet is received, the UDP header is removed.
Then, the generic lookup is performed, as done by an SCTP stack
whenever a packet is received, to find the association for the
received SCTP packet"
Note that these functions will be called in the last patch of
this patchset when enabling this feature.
v1->v2:
- Add pr_err() when fails to create udp v4 sock.
v2->v3:
- Add 'select NET_UDP_TUNNEL' in sctp Kconfig.
v3->v4:
- No change.
v4->v5:
- Change to set udp_port to 0 by default.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/sctp')
| -rw-r--r-- | include/net/sctp/constants.h | 2 | ||||
| -rw-r--r-- | include/net/sctp/sctp.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h index 122d9e2d8dfd..14a0d22c9113 100644 --- a/include/net/sctp/constants.h +++ b/include/net/sctp/constants.h @@ -286,6 +286,8 @@ enum { SCTP_MAX_GABS = 16 }; * functions simpler to write. */ +#define SCTP_DEFAULT_UDP_PORT 9899 /* default UDP tunneling port */ + /* These are the values for pf exposure, UNUSED is to keep compatible with old * applications by default. */ diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h index 4fc747b778eb..bfd87a0aa2f1 100644 --- a/include/net/sctp/sctp.h +++ b/include/net/sctp/sctp.h @@ -84,6 +84,8 @@ int sctp_copy_local_addr_list(struct net *net, struct sctp_bind_addr *addr, struct sctp_pf *sctp_get_pf_specific(sa_family_t family); int sctp_register_pf(struct sctp_pf *, sa_family_t); void sctp_addr_wq_mgmt(struct net *, struct sctp_sockaddr_entry *, int); +int sctp_udp_sock_start(struct net *net); +void sctp_udp_sock_stop(struct net *net); /* * sctp/socket.c |