From b43ea1bf18bf4ba5eeec7131c1a19d864399e422 Mon Sep 17 00:00:00 2001 From: Philippe Reynes Date: Fri, 18 Sep 2020 14:13:00 +0200 Subject: net: add a generic udp protocol This commit adds a generic udp protocol framework in the network loop. So protocol based on udp may be implemented without modifying the network loop (for example custom wait magic packet). Signed-off-by: Philippe Reynes Reviewed-by: Simon Glass --- include/net.h | 2 +- include/net/udp.h | 41 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 42 insertions(+), 1 deletion(-) create mode 100644 include/net/udp.h (limited to 'include') diff --git a/include/net.h b/include/net.h index 1bf9867f8c..219107194f 100644 --- a/include/net.h +++ b/include/net.h @@ -551,7 +551,7 @@ extern int net_restart_wrap; /* Tried all network devices */ enum proto_t { BOOTP, RARP, ARP, TFTPGET, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP, - TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT, WOL + TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT, WOL, UDP }; extern char net_boot_file_name[1024];/* Boot File name */ diff --git a/include/net/udp.h b/include/net/udp.h new file mode 100644 index 0000000000..2ae56e8447 --- /dev/null +++ b/include/net/udp.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2020 Philippe Reynes + */ + +#ifndef __UDP +#define __UDP + +/** + * struct udp_ops - function to handle udp packet + * + * This structure provides the function to handle udp packet in + * the network loop. + * + * @prereq: callback called to check the requirement + * @start: callback called to start the protocol/feature + * @data: pointer to store private data (used by prereq and start) + */ +struct udp_ops { + int (*prereq)(void *data); + int (*start)(void *data); + void *data; +}; + +int udp_prereq(void); + +int udp_start(void); + +/** + * udp_loop() - network loop for udp protocol + * + * Launch a network loop for udp protocol and use callbacks + * provided in parameter @ops to initialize the loop, and then + * to handle udp packet. + * + * @ops: udp callback + * @return: 0 if success, otherwise < 0 on error + */ +int udp_loop(struct udp_ops *ops); + +#endif -- cgit v1.2.1