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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Cc: "Edmund Henniges" <eh@emlix.com>, "Daniel Glöckner" <dg@emlix.com>
Subject: [PATCH 08/19] net: Add a slice to struct eth_device
Date: Thu, 12 Mar 2020 09:35:44 +0100	[thread overview]
Message-ID: <20200312083555.10793-9-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20200312083555.10793-1-s.hauer@pengutronix.de>

Add ethernet code safe for being called from a poller.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 include/net.h |  8 ++++++++
 net/eth.c     | 20 +++++++++++++++++---
 2 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/include/net.h b/include/net.h
index 509d1b38a1..70d3ce2849 100644
--- a/include/net.h
+++ b/include/net.h
@@ -19,6 +19,7 @@
 #include <stdlib.h>
 #include <clock.h>
 #include <led.h>
+#include <slice.h>
 #include <xfuncs.h>
 #include <linux/phy.h>
 #include <linux/string.h>	/* memcpy */
@@ -63,6 +64,8 @@ struct eth_device {
 	char *bootarg;
 	char *linuxdevname;
 
+	struct slice slice;
+
 	bool ifup;
 #define ETH_MODE_DHCP 0
 #define ETH_MODE_STATIC 1
@@ -72,6 +75,11 @@ struct eth_device {
 
 #define dev_to_edev(d) container_of(d, struct eth_device, dev)
 
+static inline struct slice *eth_device_slice(struct eth_device *edev)
+{
+	return &edev->slice;
+}
+
 static inline const char *eth_name(struct eth_device *edev)
 {
 	return edev->devname;
diff --git a/net/eth.c b/net/eth.c
index 4a8a7a8876..5cd1d703c4 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -222,20 +222,32 @@ int eth_send(struct eth_device *edev, void *packet, int length)
 	if (ret)
 		return ret;
 
+	slice_acquire(eth_device_slice(edev));
+
 	led_trigger_network(LED_TRIGGER_NET_TX);
 
-	return edev->send(edev, packet, length);
+	ret = edev->send(edev, packet, length);
+
+	slice_release(eth_device_slice(edev));
+
+	return ret;
 }
 
 static int __eth_rx(struct eth_device *edev)
 {
 	int ret;
 
+	slice_acquire(eth_device_slice(edev));
+
 	ret = eth_carrier_check(edev, 0);
 	if (ret)
-		return ret;
+		goto out;
+
+	ret = edev->recv(edev);
+out:
+	slice_release(eth_device_slice(edev));
 
-	return edev->recv(edev);
+	return ret;
 }
 
 int eth_rx(void)
@@ -356,6 +368,8 @@ int eth_register(struct eth_device *edev)
 	if (ret)
 		return ret;
 
+	slice_init(&edev->slice, dev_name(dev));
+
 	edev->devname = xstrdup(dev_name(&edev->dev));
 
 	dev_add_param_ip(dev, "ipaddr", NULL, NULL, &edev->ipaddr, edev);
-- 
2.25.1


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  parent reply	other threads:[~2020-03-12  8:37 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-12  8:35 [PATCH v3 00/19] Protect code from pollers Sascha Hauer
2020-03-12  8:35 ` [PATCH 01/19] net: fec_imx: Do not clear MII interrupt during receive Sascha Hauer
2020-03-12  8:35 ` [PATCH 02/19] miitool: Use mdiobus_read() Sascha Hauer
2020-03-12  8:35 ` [PATCH 03/19] net: phy: mdio-mux: Use mdiobus_read/write() Sascha Hauer
2020-03-12  8:35 ` [PATCH 04/19] net: Open ethernet devices explicitly Sascha Hauer
2020-03-12  8:35 ` [PATCH 05/19] poller: Give pollers a name Sascha Hauer
2020-03-12  8:35 ` [PATCH 06/19] poller: Add a poller command Sascha Hauer
2020-03-12  8:35 ` [PATCH 07/19] Introduce slices Sascha Hauer
2020-03-12  8:35 ` Sascha Hauer [this message]
2020-03-12  8:35 ` [PATCH 09/19] net: mdiobus: Add slice Sascha Hauer
2020-03-12  8:35 ` [PATCH 10/19] usb: Add a slice to usb host controllers Sascha Hauer
2020-03-12  8:35 ` [PATCH 11/19] usbnet: Add slice Sascha Hauer
2020-03-12  8:35 ` [PATCH 12/19] net: Call net_poll() in a poller Sascha Hauer
2020-03-12  8:35 ` [PATCH 13/19] net: reply to ping requests Sascha Hauer
2020-03-12  8:35 ` [PATCH 14/19] usbnet: Be more friendly in the receive path Sascha Hauer
2020-03-12  8:35 ` [PATCH 15/19] net: phy: Also print link down messages Sascha Hauer
2020-03-12  8:35 ` [PATCH 16/19] net: ifup command: add ethernet device completion Sascha Hauer
2020-03-12  8:35 ` [PATCH 17/19] net: phy: Do not claim the link is up initially Sascha Hauer
2020-03-12  8:35 ` [PATCH 18/19] net: Add ifdown support and command Sascha Hauer
2020-03-12  8:35 ` [PATCH 19/19] poller: Allow to run pollers inside of pollers Sascha Hauer
2020-03-12 22:36   ` Daniel Glöckner
2020-03-16  8:04     ` Sascha Hauer
2020-04-07 19:28       ` Daniel Glöckner
2020-04-22  7:40         ` Sascha Hauer
2020-05-08 17:42           ` Daniel Glöckner
2020-05-20  9:43 [PATCH 00/19] Slices and fastboot over UDP Sascha Hauer
2020-05-20  9:43 ` [PATCH 08/19] net: Add a slice to struct eth_device Sascha Hauer

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