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fix mvneta vlan tagging

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This is a 3.14.x backport of:
"mvneta: Fix TSO and checksum for non-acceleration vlan traffic"

Upstream commits:

817dbfa5d1bc276a72c1a577310382008e8aca0a
2d39d120781a5770573dc6ed672a5a562f541aea

Fixes vlan tagging on SoC interfaces for the WRT1900AC.  Useful
when using mvsw6171 driver.

Signed-off-by: Mark Milburn <mark.a.milburn@gmail.com>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 43781
This commit is contained in:
Imre Kaloz 2014-12-26 14:48:33 +00:00
parent 9038e8d248
commit edbb903461
1 changed files with 38 additions and 0 deletions
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38
target/linux/mvebu/patches-3.14/110-mvneta_fix_tso_and_chksum.patch Normal file
View File

@ -0,0 +1,38 @@
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -20,6 +20,7 @@
#include <linux/mbus.h>
#include <linux/module.h>
#include <linux/interrupt.h>
+#include <linux/if_vlan.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <linux/io.h>
@@ -1380,15 +1381,16 @@ static u32 mvneta_skb_tx_csum(struct mvn
{
if (skb->ip_summed == CHECKSUM_PARTIAL) {
int ip_hdr_len = 0;
+ __be16 l3_proto = vlan_get_protocol(skb);
u8 l4_proto;
- if (skb->protocol == htons(ETH_P_IP)) {
+ if (l3_proto == htons(ETH_P_IP)) {
struct iphdr *ip4h = ip_hdr(skb);
/* Calculate IPv4 checksum and L4 checksum */
ip_hdr_len = ip4h->ihl;
l4_proto = ip4h->protocol;
- } else if (skb->protocol == htons(ETH_P_IPV6)) {
+ } else if (l3_proto == htons(ETH_P_IPV6)) {
struct ipv6hdr *ip6h = ipv6_hdr(skb);
/* Read l4_protocol from one of IPv6 extra headers */
@@ -1399,7 +1401,7 @@ static u32 mvneta_skb_tx_csum(struct mvn
return MVNETA_TX_L4_CSUM_NOT;
return mvneta_txq_desc_csum(skb_network_offset(skb),
- skb->protocol, ip_hdr_len, l4_proto);
+ l3_proto, ip_hdr_len, l4_proto);
}
return MVNETA_TX_L4_CSUM_NOT;