| Message ID | 20210413031523.73507-3-xuanzhuo@linux.alibaba.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | virtio-net support xdp socket zero copy xmit | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for net-next |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | warning | 5 maintainers not CCed: yhs@fb.com kpsingh@kernel.org andrii@kernel.org kafai@fb.com songliubraving@fb.com |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 6686 this patch: 6686 |
| netdev/kdoc | fail | Errors and warnings before: 64 this patch: 66 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 21 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 6899 this patch: 6899 |
| netdev/header_inline | success | Link |
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 86e4bd08c2f1..78b2a8b2c31d 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1598,6 +1598,7 @@ 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 netdev_priv_flags { IFF_802_1Q_VLAN_BIT, @@ -1632,6 +1633,7 @@ enum netdev_priv_flags { 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)) @@ -1669,6 +1671,7 @@ enum netdev_priv_flags { #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 {
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(+)