diff options
| author | Dave Airlie <airlied@redhat.com> | 2019-03-04 12:02:55 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2019-03-04 12:02:55 +1000 |
| commit | 2c3cd66f4c66b169c18a2dbebbc894681d282278 (patch) | |
| tree | 9d2e055ea43e177914a4cce9d007982a7417623c /include/linux/netdev_features.h | |
| parent | 7fbd5d784f75750199c21918da9b2fc92af371e6 (diff) | |
| parent | 1c163f4c7b3f621efff9b28a47abb36f7378d783 (diff) | |
Merge v5.0 into drm-next
There is a really hairy resolution involving amdgpu fixes, that I'd rather confirm here.
Also some misc fixes are landed by me, but the pr has them as well.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/linux/netdev_features.h')
| -rw-r--r-- | include/linux/netdev_features.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index 2b2a6dce1630..4c76fe2c8488 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -11,6 +11,8 @@ #define _LINUX_NETDEV_FEATURES_H #include <linux/types.h> +#include <linux/bitops.h> +#include <asm/byteorder.h> typedef u64 netdev_features_t; @@ -154,8 +156,26 @@ enum { #define NETIF_F_HW_TLS_TX __NETIF_F(HW_TLS_TX) #define NETIF_F_HW_TLS_RX __NETIF_F(HW_TLS_RX) -#define for_each_netdev_feature(mask_addr, bit) \ - for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT) +/* Finds the next feature with the highest number of the range of start till 0. + */ +static inline int find_next_netdev_feature(u64 feature, unsigned long start) +{ + /* like BITMAP_LAST_WORD_MASK() for u64 + * this sets the most significant 64 - start to 0. + */ + feature &= ~0ULL >> (-start & ((sizeof(feature) * 8) - 1)); + + return fls64(feature) - 1; +} + +/* This goes for the MSB to the LSB through the set feature bits, + * mask_addr should be a u64 and bit an int + */ +#define for_each_netdev_feature(mask_addr, bit) \ + for ((bit) = find_next_netdev_feature((mask_addr), \ + NETDEV_FEATURE_COUNT); \ + (bit) >= 0; \ + (bit) = find_next_netdev_feature((mask_addr), (bit) - 1)) /* Features valid for ethtool to change */ /* = all defined minus driver/device-class-related */ |
