[PATCH net-next v5 02/15] netdevice: add priv_flags IFF_NOT_USE_DMA_ADDR
From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Date: 2021-06-10 08:22:17
Also in:
bpf, virtualization
Subsystem:
networking drivers, networking [general], the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Some driver devices, such as virtio-net, do not directly use dma addr. For upper-level frameworks such as xdp socket, that need to be aware of this. So add a new priv_flag IFF_NOT_USE_DMA_ADDR. Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> --- include/linux/netdevice.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 3202e055b305..2de0a0c455e5 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h@@ -1596,6 +1596,7 @@ typedef u64 netdev_priv_flags_t; * @IFF_LIVE_RENAME_OK: rename is allowed while device is up and running * @IFF_TX_SKB_NO_LINEAR: device/driver is capable of xmitting frames with * skb_headlen(skb) == 0 (data starts from frag0) + * @IFF_NOT_USE_DMA_ADDR: driver not use dma addr directly. such as virtio-net */ enum { IFF_802_1Q_VLAN_BIT,
@@ -1630,6 +1631,7 @@ enum { IFF_L3MDEV_RX_HANDLER_BIT, IFF_LIVE_RENAME_OK_BIT, IFF_TX_SKB_NO_LINEAR_BIT, + IFF_NOT_USE_DMA_ADDR_BIT, }; #define __IFF_BIT(bit) ((netdev_priv_flags_t)1 << (bit))
@@ -1667,6 +1669,7 @@ enum { #define IFF_L3MDEV_RX_HANDLER __IFF(L3MDEV_RX_HANDLER) #define IFF_LIVE_RENAME_OK __IFF(LIVE_RENAME_OK) #define IFF_TX_SKB_NO_LINEAR __IFF(TX_SKB_NO_LINEAR) +#define IFF_NOT_USE_DMA_ADDR __IFF(NOT_USE_DMA_ADDR) /* Specifies the type of the struct net_device::ml_priv pointer */ enum netdev_ml_priv_type {
--
2.31.0