diff options
| -rw-r--r-- | drivers/net/hyperv/hyperv_net.h | 8 | ||||
| -rw-r--r-- | drivers/net/hyperv/netvsc.c | 6 | ||||
| -rw-r--r-- | drivers/net/hyperv/netvsc_drv.c | 70 | ||||
| -rw-r--r-- | include/linux/hyperv.h | 2 |
4 files changed, 68 insertions, 18 deletions
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index 287767055125..dec5836ae075 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -456,12 +456,9 @@ struct nvsp_message { } __packed; +#define NETVSC_MTU 65536 - -/* #define NVSC_MIN_PROTOCOL_VERSION 1 */ -/* #define NVSC_MAX_PROTOCOL_VERSION 1 */ - -#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024) /* 1MB */ +#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*2) /* 2MB */ #define NETVSC_RECEIVE_BUFFER_ID 0xcafe @@ -479,6 +476,7 @@ struct netvsc_device { u32 nvsp_version; atomic_t num_outstanding_sends; + bool start_remove; bool destroy; /* * List of free preallocated hv_netvsc_packet to represent receive diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 46828b4dd8ab..8965b45ce5a5 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -42,7 +42,7 @@ static struct netvsc_device *alloc_net_device(struct hv_device *device) if (!net_device) return NULL; - + net_device->start_remove = false; net_device->destroy = false; net_device->dev = device; net_device->ndev = ndev; @@ -299,7 +299,7 @@ static int negotiate_nvsp_ver(struct hv_device *device, /* NVSPv2 only: Send NDIS config */ memset(init_packet, 0, sizeof(struct nvsp_message)); init_packet->hdr.msg_type = NVSP_MSG2_TYPE_SEND_NDIS_CONFIG; - init_packet->msg.v2_msg.send_ndis_config.mtu = ETH_DATA_LEN; + init_packet->msg.v2_msg.send_ndis_config.mtu = net_device->ndev->mtu; ret = vmbus_sendpacket(device->channel, init_packet, sizeof(struct nvsp_message), @@ -464,7 +464,7 @@ static void netvsc_send_completion(struct hv_device *device, atomic_dec(&net_device->num_outstanding_sends); - if (netif_queue_stopped(ndev)) + if (netif_queue_stopped(ndev) && !net_device->start_remove) netif_wake_queue(ndev); } else { netdev_err(ndev, "Unknown send completion packet type- " diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index b7cbd126f20a..462d05f05e84 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -148,10 +148,12 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) struct net_device_context *net_device_ctx = netdev_priv(net); struct hv_netvsc_packet *packet; int ret; - unsigned int i, num_pages; + unsigned int i, num_pages, npg_data; - /* Add 1 for skb->data and additional one for RNDIS */ - num_pages = skb_shinfo(skb)->nr_frags + 1 + 1; + /* Add multipage for skb->data and additional one for RNDIS */ + npg_data = (((unsigned long)skb->data + skb_headlen(skb) - 1) + >> PAGE_SHIFT) - ((unsigned long)skb->data >> PAGE_SHIFT) + 1; + num_pages = skb_shinfo(skb)->nr_frags + npg_data + 1; /* Allocate a netvsc packet based on # of frags. */ packet = kzalloc(sizeof(struct hv_netvsc_packet) + @@ -174,21 +176,36 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) packet->page_buf_cnt = num_pages; /* Initialize it from the skb */ - packet->total_data_buflen = skb->len; + packet->total_data_buflen = skb->len; /* Start filling in the page buffers starting after RNDIS buffer. */ packet->page_buf[1].pfn = virt_to_phys(skb->data) >> PAGE_SHIFT; packet->page_buf[1].offset = (unsigned long)skb->data & (PAGE_SIZE - 1); - packet->page_buf[1].len = skb_headlen(skb); + if (npg_data == 1) + packet->page_buf[1].len = skb_headlen(skb); + else + packet->page_buf[1].len = PAGE_SIZE + - packet->page_buf[1].offset; + + for (i = 2; i <= npg_data; i++) { + packet->page_buf[i].pfn = virt_to_phys(skb->data + + PAGE_SIZE * (i-1)) >> PAGE_SHIFT; + packet->page_buf[i].offset = 0; + packet->page_buf[i].len = PAGE_SIZE; + } + if (npg_data > 1) + packet->page_buf[npg_data].len = (((unsigned long)skb->data + + skb_headlen(skb) - 1) & (PAGE_SIZE - 1)) + 1; /* Additional fragments are after SKB data */ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { const skb_frag_t *f = &skb_shinfo(skb)->frags[i]; - packet->page_buf[i+2].pfn = page_to_pfn(skb_frag_page(f)); - packet->page_buf[i+2].offset = f->page_offset; - packet->page_buf[i+2].len = skb_frag_size(f); + packet->page_buf[i+npg_data+1].pfn = + page_to_pfn(skb_frag_page(f)); + packet->page_buf[i+npg_data+1].offset = f->page_offset; + packet->page_buf[i+npg_data+1].len = skb_frag_size(f); } /* Set the completion routine */ @@ -300,6 +317,39 @@ static void netvsc_get_drvinfo(struct net_device *net, strcpy(info->fw_version, "N/A"); } +static int netvsc_change_mtu(struct net_device *ndev, int mtu) +{ + struct net_device_context *ndevctx = netdev_priv(ndev); + struct hv_device *hdev = ndevctx->device_ctx; + struct netvsc_device *nvdev = hv_get_drvdata(hdev); + struct netvsc_device_info device_info; + int limit = ETH_DATA_LEN; + + if (nvdev == NULL || nvdev->destroy) + return -ENODEV; + + if (nvdev->nvsp_version == NVSP_PROTOCOL_VERSION_2) + limit = NETVSC_MTU; + + if (mtu < 68 || mtu > limit) + return -EINVAL; + + nvdev->start_remove = true; + cancel_delayed_work_sync(&ndevctx->dwork); + netif_stop_queue(ndev); + rndis_filter_device_remove(hdev); + + ndev->mtu = mtu; + + ndevctx->device_ctx = hdev; + hv_set_drvdata(hdev, ndev); + device_info.ring_size = ring_size; + rndis_filter_device_add(hdev, &device_info); + netif_wake_queue(ndev); + + return 0; +} + static const struct ethtool_ops ethtool_ops = { .get_drvinfo = netvsc_get_drvinfo, .get_link = ethtool_op_get_link, @@ -310,7 +360,7 @@ static const struct net_device_ops device_ops = { .ndo_stop = netvsc_close, .ndo_start_xmit = netvsc_start_xmit, .ndo_set_rx_mode = netvsc_set_multicast_list, - .ndo_change_mtu = eth_change_mtu, + .ndo_change_mtu = netvsc_change_mtu, .ndo_validate_addr = eth_validate_addr, .ndo_set_mac_address = eth_mac_addr, }; @@ -403,6 +453,8 @@ static int netvsc_remove(struct hv_device *dev) return 0; } + net_device->start_remove = true; + ndev_ctx = netdev_priv(net); cancel_delayed_work_sync(&ndev_ctx->dwork); diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 12ec328481de..62b908e0e591 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -35,7 +35,7 @@ #include <linux/mod_devicetable.h> -#define MAX_PAGE_BUFFER_COUNT 16 +#define MAX_PAGE_BUFFER_COUNT 18 #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */ #pragma pack(push, 1) |
