linux-kernel - [PATCH 41/50] mars: add new file drivers/block/mars/mars_light/light

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Message-Id: <1404251250-22992-42-git-send-email-tst@schoebel-theuer.de>
Date:	Tue,  1 Jul 2014 23:47:21 +0200
From:	Thomas Schoebel-Theuer <tst@...oebel-theuer.de>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH 41/50] mars: add new file drivers/block/mars/mars_light/light_net.c

Signed-off-by: Thomas Schoebel-Theuer <tst@...oebel-theuer.de>
---
 drivers/block/mars/mars_light/light_net.c | 99 +++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 drivers/block/mars/mars_light/light_net.c

diff --git a/drivers/block/mars/mars_light/light_net.c b/drivers/block/mars/mars_light/light_net.c
new file mode 100644
index 0000000..170e51b
--- /dev/null
+++ b/drivers/block/mars/mars_light/light_net.c
@@ -0,0 +1,99 @@
+/*  (c) 2011 Thomas Schoebel-Theuer / 1&1 Internet AG */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+
+#include <linux/mars_light/light_strategy.h>
+#include <linux/xio_net.h>
+
+static
+char *_xio_translate_hostname(const char *name)
+{
+	struct mars_global *global = mars_global;
+	char *res = brick_strdup(name);
+	struct mars_dent *test;
+	char *tmp;
+
+	if (unlikely(!global))
+		goto done;
+
+	for (tmp = res; *tmp; tmp++) {
+		if (*tmp == ':') {
+			*tmp = '\0';
+			break;
+		}
+	}
+
+	tmp = path_make("/mars/ips/ip-%s", res);
+	if (unlikely(!tmp))
+		goto done;
+
+	test = mars_find_dent(global, tmp);
+	if (test && test->link_val) {
+		XIO_DBG("'%s' => '%s'\n", tmp, test->link_val);
+		brick_string_free(res);
+		res = brick_strdup(test->link_val);
+	} else {
+		XIO_DBG("no translation for '%s'\n", tmp);
+	}
+	brick_string_free(tmp);
+
+done:
+	return res;
+}
+
+int xio_send_dent_list(struct xio_socket *sock, struct list_head *anchor)
+{
+	struct list_head *tmp;
+	struct mars_dent *dent;
+	int status = 0;
+
+	for (tmp = anchor->next; tmp != anchor; tmp = tmp->next) {
+		dent = container_of(tmp, struct mars_dent, dent_link);
+		status = xio_send_struct(sock, dent, mars_dent_meta);
+		if (status < 0)
+			break;
+	}
+	if (status >= 0) { /*  send EOR */
+		status = xio_send_struct(sock, NULL, mars_dent_meta);
+	}
+	return status;
+}
+EXPORT_SYMBOL_GPL(xio_send_dent_list);
+
+int xio_recv_dent_list(struct xio_socket *sock, struct list_head *anchor)
+{
+	int status;
+
+	for (;;) {
+		struct mars_dent *dent = brick_zmem_alloc(sizeof(struct mars_dent));
+
+		INIT_LIST_HEAD(&dent->dent_link);
+		INIT_LIST_HEAD(&dent->brick_list);
+
+		status = xio_recv_struct(sock, dent, mars_dent_meta);
+		if (status <= 0) {
+			xio_free_dent(dent);
+			goto done;
+		}
+		list_add_tail(&dent->dent_link, anchor);
+	}
+done:
+	return status;
+}
+EXPORT_SYMBOL_GPL(xio_recv_dent_list);
+
+/***************** module init stuff ************************/
+
+int __init init_sy_net(void)
+{
+	XIO_INF("init_sy_net()\n");
+	xio_translate_hostname = _xio_translate_hostname;
+	return 0;
+}
+
+void exit_sy_net(void)
+{
+	XIO_INF("exit_sy_net()\n");
+}
-- 
2.0.0

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