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 <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/net/Kconfig b/net/Kconfig
index 6874b55..1b3e420 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -8,6 +8,12 @@
if NET
+config PROT_UDP
+ bool "Enable generic udp framework"
+ help
+ Enable a generic udp framework that allows defining a custom
+ handler for udp protocol.
+
config BOOTP_SEND_HOSTNAME
bool "Send hostname to DNS server"
help
diff --git a/net/Makefile b/net/Makefile
index fef71b9..76527f7 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -27,6 +27,7 @@
obj-$(CONFIG_CMD_TFTPBOOT) += tftp.o
obj-$(CONFIG_UDP_FUNCTION_FASTBOOT) += fastboot.o
obj-$(CONFIG_CMD_WOL) += wol.o
+obj-$(CONFIG_PROT_UDP) += udp.o
# Disable this warning as it is triggered by:
# sprintf(buf, index ? "foo%d" : "foo", index)
diff --git a/net/net.c b/net/net.c
index 28d9eeb..1ce0eb5 100644
--- a/net/net.c
+++ b/net/net.c
@@ -102,6 +102,7 @@
#if defined(CONFIG_CMD_PCAP)
#include <net/pcap.h>
#endif
+#include <net/udp.h>
#if defined(CONFIG_LED_STATUS)
#include <miiphy.h>
#include <status_led.h>
@@ -544,6 +545,9 @@
break;
}
+ if (IS_ENABLED(CONFIG_PROT_UDP) && protocol == UDP)
+ udp_start();
+
break;
}
@@ -1364,6 +1368,13 @@
}
goto common;
#endif
+#if defined(CONFIG_PROT_UDP)
+ case UDP:
+ if (udp_prereq())
+ return 1;
+ goto common;
+#endif
+
#if defined(CONFIG_CMD_NFS)
case NFS:
#endif
@@ -1375,7 +1386,7 @@
return 1;
}
#if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \
- defined(CONFIG_CMD_DNS)
+ defined(CONFIG_CMD_DNS) || defined(CONFIG_PROT_UDP)
common:
#endif
/* Fall through */
diff --git a/net/udp.c b/net/udp.c
new file mode 100644
index 0000000..a93822f
--- /dev/null
+++ b/net/udp.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Philippe Reynes <philippe.reynes@softathome.com>
+ */
+
+#include <common.h>
+#include <net.h>
+#include <net/udp.h>
+
+static struct udp_ops *udp_ops;
+
+int udp_prereq(void)
+{
+ int ret = 0;
+
+ if (udp_ops->prereq)
+ ret = udp_ops->prereq(udp_ops->data);
+
+ return ret;
+}
+
+int udp_start(void)
+{
+ return udp_ops->start(udp_ops->data);
+}
+
+int udp_loop(struct udp_ops *ops)
+{
+ int ret = -1;
+
+ if (!ops) {
+ printf("%s: ops should not be null\n", __func__);
+ goto out;
+ }
+
+ if (!ops->start) {
+ printf("%s: no start function defined\n", __func__);
+ goto out;
+ }
+
+ udp_ops = ops;
+ ret = net_loop(UDP);
+
+ out:
+ return ret;
+}