From: Haiyang Zhang Date: Thu, 22 Mar 2018 19:01:13 +0000 (-0700) Subject: hv_netvsc: Fix the return status in RX path X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=5c71dadbb45970a8f0544a27ae8f1cbd9750e516;p=openwrt%2Fstaging%2Fblogic.git hv_netvsc: Fix the return status in RX path As defined in hyperv_net.h, the NVSP_STAT_SUCCESS is one not zero. Some functions returns 0 when it actually means NVSP_STAT_SUCCESS. This patch fixes them. In netvsc_receive(), it puts the last RNDIS packet's receive status for all packets in a vmxferpage which may contain multiple RNDIS packets. This patch puts NVSP_STAT_FAIL in the receive completion if one of the packets in a vmxferpage fails. Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller --- diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 4123d081b1c7..58bb2dcbc9f0 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -1098,12 +1098,16 @@ static int netvsc_receive(struct net_device *ndev, void *data = recv_buf + vmxferpage_packet->ranges[i].byte_offset; u32 buflen = vmxferpage_packet->ranges[i].byte_count; + int ret; trace_rndis_recv(ndev, q_idx, data); /* Pass it to the upper layer */ - status = rndis_filter_receive(ndev, net_device, - channel, data, buflen); + ret = rndis_filter_receive(ndev, net_device, + channel, data, buflen); + + if (unlikely(ret != NVSP_STAT_SUCCESS)) + status = NVSP_STAT_FAIL; } enq_receive_complete(ndev, net_device, q_idx, diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index f28c85d212ce..5d716750ae22 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -831,7 +831,7 @@ int netvsc_recv_callback(struct net_device *net, u64_stats_update_end(&rx_stats->syncp); napi_gro_receive(&nvchan->napi, skb); - return 0; + return NVSP_STAT_SUCCESS; } static void netvsc_get_drvinfo(struct net_device *net, diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c index 020f8bc54386..4a4952363e8a 100644 --- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -437,10 +437,10 @@ int rndis_filter_receive(struct net_device *ndev, "unhandled rndis message (type %u len %u)\n", rndis_msg->ndis_msg_type, rndis_msg->msg_len); - break; + return NVSP_STAT_FAIL; } - return 0; + return NVSP_STAT_SUCCESS; } static int rndis_filter_query_device(struct rndis_device *dev,