From 965ae44412f8c0c19945b3f62bc945ad0b15a8aa Mon Sep 17 00:00:00 2001 From: Xin Long Date: Thu, 29 Oct 2020 15:04:58 +0800 Subject: 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 Acked-by: Marcelo Ricardo Leitner Signed-off-by: Jakub Kicinski --- net/sctp/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'net/sctp/Kconfig') diff --git a/net/sctp/Kconfig b/net/sctp/Kconfig index 39d7fa9569f8..5da599ff84a9 100644 --- a/net/sctp/Kconfig +++ b/net/sctp/Kconfig @@ -11,6 +11,7 @@ menuconfig IP_SCTP select CRYPTO_HMAC select CRYPTO_SHA1 select LIBCRC32C + select NET_UDP_TUNNEL help Stream Control Transmission Protocol -- cgit v1.2.3