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authorJakub Kicinski <jakub.kicinski@netronome.com>2019-11-23 03:27:24 +0300
committerJakub Kicinski <jakub.kicinski@netronome.com>2019-11-23 03:27:24 +0300
commita9f852e92e40992c4ff09ac3940f7725e016317a (patch)
treee6c40313de08cfb69b806a44dd777432d2b9ef29 /drivers/net/hyperv
parent3243e04ab1c06e7cb1402aff609c83de97956489 (diff)
parent34c36f4564b8a3339db3ce832a5aaf1871185685 (diff)
downloadlinux-a9f852e92e40992c4ff09ac3940f7725e016317a.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor conflict in drivers/s390/net/qeth_l2_main.c, kept the lock from commit c8183f548902 ("s390/qeth: fix potential deadlock on workqueue flush"), removed the code which was removed by commit 9897d583b015 ("s390/qeth: consolidate some duplicated HW cmd code"). Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Diffstat (limited to 'drivers/net/hyperv')
-rw-r--r--drivers/net/hyperv/hyperv_net.h3
-rw-r--r--drivers/net/hyperv/netvsc.c38
2 files changed, 32 insertions, 9 deletions
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 4209d1cf57f6..034dbab7aa80 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -609,7 +609,8 @@ struct nvsp_5_send_indirect_table {
/* The number of entries in the send indirection table */
u32 count;
- /* The offset of the send indirection table from top of this struct.
+ /* The offset of the send indirection table from the beginning of
+ * struct nvsp_message.
* The send indirection table tells which channel to put the send
* traffic on. Each entry is a channel number.
*/
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index d22a36fc7a7c..eab83e71567a 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -1178,20 +1178,39 @@ static int netvsc_receive(struct net_device *ndev,
}
static void netvsc_send_table(struct net_device *ndev,
- const struct nvsp_message *nvmsg)
+ struct netvsc_device *nvscdev,
+ const struct nvsp_message *nvmsg,
+ u32 msglen)
{
struct net_device_context *net_device_ctx = netdev_priv(ndev);
- u32 count, *tab;
+ u32 count, offset, *tab;
int i;
count = nvmsg->msg.v5_msg.send_table.count;
+ offset = nvmsg->msg.v5_msg.send_table.offset;
+
if (count != VRSS_SEND_TAB_SIZE) {
netdev_err(ndev, "Received wrong send-table size:%u\n", count);
return;
}
- tab = (u32 *)((unsigned long)&nvmsg->msg.v5_msg.send_table +
- nvmsg->msg.v5_msg.send_table.offset);
+ /* If negotiated version <= NVSP_PROTOCOL_VERSION_6, the offset may be
+ * wrong due to a host bug. So fix the offset here.
+ */
+ if (nvscdev->nvsp_version <= NVSP_PROTOCOL_VERSION_6 &&
+ msglen >= sizeof(struct nvsp_message_header) +
+ sizeof(union nvsp_6_message_uber) + count * sizeof(u32))
+ offset = sizeof(struct nvsp_message_header) +
+ sizeof(union nvsp_6_message_uber);
+
+ /* Boundary check for all versions */
+ if (offset > msglen - count * sizeof(u32)) {
+ netdev_err(ndev, "Received send-table offset too big:%u\n",
+ offset);
+ return;
+ }
+
+ tab = (void *)nvmsg + offset;
for (i = 0; i < count; i++)
net_device_ctx->tx_table[i] = tab[i];
@@ -1209,12 +1228,14 @@ static void netvsc_send_vf(struct net_device *ndev,
net_device_ctx->vf_alloc ? "added" : "removed");
}
-static void netvsc_receive_inband(struct net_device *ndev,
- const struct nvsp_message *nvmsg)
+static void netvsc_receive_inband(struct net_device *ndev,
+ struct netvsc_device *nvscdev,
+ const struct nvsp_message *nvmsg,
+ u32 msglen)
{
switch (nvmsg->hdr.msg_type) {
case NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE:
- netvsc_send_table(ndev, nvmsg);
+ netvsc_send_table(ndev, nvscdev, nvmsg, msglen);
break;
case NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION:
@@ -1232,6 +1253,7 @@ static int netvsc_process_raw_pkt(struct hv_device *device,
{
struct vmbus_channel *channel = nvchan->channel;
const struct nvsp_message *nvmsg = hv_pkt_data(desc);
+ u32 msglen = hv_pkt_datalen(desc);
trace_nvsp_recv(ndev, channel, nvmsg);
@@ -1247,7 +1269,7 @@ static int netvsc_process_raw_pkt(struct hv_device *device,
break;
case VM_PKT_DATA_INBAND:
- netvsc_receive_inband(ndev, nvmsg);
+ netvsc_receive_inband(ndev, net_device, nvmsg, msglen);
break;
default: