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[net-next,v3,4/6] net: qualcomm: rmnet: Process packets over ethernet

Message ID 1513038615-16407-5-git-send-email-subashab@codeaurora.org
State Accepted, archived
Delegated to: David Miller
Headers show
Series net: qualcomm: rmnet: Configuration options | expand

Commit Message

Subash Abhinov Kasiviswanathan Dec. 12, 2017, 12:30 a.m. UTC 
Add support to send and receive packets over ethernet.
An example of usage is testing the data path on UML. This can be
achieved by setting up two UML instances in multicast mode and
associating rmnet over the UML ethernet device.

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
---
 drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
index a46053c..0553932 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
@@ -15,6 +15,7 @@ 
 
 #include <linux/netdevice.h>
 #include <linux/netdev_features.h>
+#include <linux/if_arp.h>
 #include "rmnet_private.h"
 #include "rmnet_config.h"
 #include "rmnet_vnd.h"
@@ -104,6 +105,15 @@  static void rmnet_set_skb_proto(struct sk_buff *skb)
 {
 	struct sk_buff *skbn;
 
+	if (skb->dev->type == ARPHRD_ETHER) {
+		if (pskb_expand_head(skb, ETH_HLEN, 0, GFP_KERNEL)) {
+			kfree_skb(skb);
+			return;
+		}
+
+		skb_push(skb, ETH_HLEN);
+	}
+
 	if (port->ingress_data_format & RMNET_INGRESS_FORMAT_DEAGGREGATION) {
 		while ((skbn = rmnet_map_deaggregate(skb)) != NULL)
 			__rmnet_map_ingress_handler(skbn, port);