netdev - [PATCH net-next V3 17/17] hv_netvsc: Eliminate vlan_tci from struct hv_netvsc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1449016999-9796-17-git-send-email-kys@microsoft.com>
Date:	Tue,  1 Dec 2015 16:43:19 -0800
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	davem@...emloft.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
	olaf@...fle.de, apw@...onical.com, jasowang@...hat.com
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH net-next V3 17/17] hv_netvsc: Eliminate vlan_tci from struct hv_netvsc_packet

Eliminate vlan_tci from struct hv_netvsc_packet.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
---
 drivers/net/hyperv/hyperv_net.h   |    4 ++--
 drivers/net/hyperv/netvsc_drv.c   |   14 +++++++-------
 drivers/net/hyperv/rndis_filter.c |    7 +++----
 3 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 128b296..0c04362 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -136,7 +136,6 @@ struct hv_netvsc_packet {
 	u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
 	u8 page_buf_cnt;
 
-	u16 vlan_tci;
 	u16 q_idx;
 	u32 send_buf_index;
 
@@ -188,7 +187,8 @@ int netvsc_recv_callback(struct hv_device *device_obj,
 			struct hv_netvsc_packet *packet,
 			void **data,
 			struct ndis_tcp_ip_checksum_info *csum_info,
-			struct vmbus_channel *channel);
+			struct vmbus_channel *channel,
+			u16 vlan_tci);
 void netvsc_channel_cb(void *context);
 int rndis_filter_open(struct hv_device *dev);
 int rndis_filter_close(struct hv_device *dev);
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 490672e..ba21272 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -470,7 +470,6 @@ check_size:
 			FIELD_SIZEOF(struct sk_buff, cb));
 	packet = (struct hv_netvsc_packet *)skb->cb;
 
-	packet->vlan_tci = skb->vlan_tci;
 
 	packet->q_idx = skb_get_queue_mapping(skb);
 
@@ -480,7 +479,7 @@ check_size:
 
 	memset(rndis_msg, 0, RNDIS_AND_PPI_SIZE);
 
-	isvlan = packet->vlan_tci & VLAN_TAG_PRESENT;
+	isvlan = skb->vlan_tci & VLAN_TAG_PRESENT;
 
 	/* Add the rndis header */
 	rndis_msg->ndis_msg_type = RNDIS_MSG_PACKET;
@@ -508,8 +507,8 @@ check_size:
 					IEEE_8021Q_INFO);
 		vlan = (struct ndis_pkt_8021q_info *)((void *)ppi +
 						ppi->ppi_offset);
-		vlan->vlanid = packet->vlan_tci & VLAN_VID_MASK;
-		vlan->pri = (packet->vlan_tci & VLAN_PRIO_MASK) >>
+		vlan->vlanid = skb->vlan_tci & VLAN_VID_MASK;
+		vlan->pri = (skb->vlan_tci & VLAN_PRIO_MASK) >>
 				VLAN_PRIO_SHIFT;
 	}
 
@@ -676,7 +675,8 @@ int netvsc_recv_callback(struct hv_device *device_obj,
 				struct hv_netvsc_packet *packet,
 				void **data,
 				struct ndis_tcp_ip_checksum_info *csum_info,
-				struct vmbus_channel *channel)
+				struct vmbus_channel *channel,
+				u16 vlan_tci)
 {
 	struct net_device *net;
 	struct net_device_context *net_device_ctx;
@@ -716,9 +716,9 @@ int netvsc_recv_callback(struct hv_device *device_obj,
 			skb->ip_summed = CHECKSUM_NONE;
 	}
 
-	if (packet->vlan_tci & VLAN_TAG_PRESENT)
+	if (vlan_tci & VLAN_TAG_PRESENT)
 		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
-				       packet->vlan_tci);
+				       vlan_tci);
 
 	skb_record_rx_queue(skb, channel->
 			    offermsg.offer.sub_channel_index);
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 28adf6a..a37bbda 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -354,6 +354,7 @@ static int rndis_filter_receive_data(struct rndis_device *dev,
 	u32 data_offset;
 	struct ndis_pkt_8021q_info *vlan;
 	struct ndis_tcp_ip_checksum_info *csum_info;
+	u16 vlan_tci = 0;
 
 	rndis_pkt = &msg->msg.pkt;
 
@@ -384,15 +385,13 @@ static int rndis_filter_receive_data(struct rndis_device *dev,
 
 	vlan = rndis_get_ppi(rndis_pkt, IEEE_8021Q_INFO);
 	if (vlan) {
-		pkt->vlan_tci = VLAN_TAG_PRESENT | vlan->vlanid |
+		vlan_tci = VLAN_TAG_PRESENT | vlan->vlanid |
 			(vlan->pri << VLAN_PRIO_SHIFT);
-	} else {
-		pkt->vlan_tci = 0;
 	}
 
 	csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO);
 	return netvsc_recv_callback(dev->net_dev->dev, pkt, data,
-				    csum_info, channel);
+				    csum_info, channel, vlan_tci);
 }
 
 int rndis_filter_receive(struct hv_device *dev,
-- 
1.7.4.1

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html