| Message ID | 20210626003314.3159402-4-vinicius.gomes@intel.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | ethtool: Add support for frame preemption | 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 | 8 maintainers not CCed: daniel@iogearbox.net andriin@fb.com ast@kernel.org ap420073@gmail.com alobakin@pm.me atenart@kernel.org davem@davemloft.net weiwan@google.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: 4916 this patch: 4916 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 33 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 4974 this patch: 4974 |
| netdev/header_inline | success | Link |
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index af5d4c5b0ad5..dcff0b9a55ab 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2279,6 +2279,7 @@ int netdev_txq_to_tc(struct net_device *dev, unsigned int txq); void netdev_reset_tc(struct net_device *dev); int netdev_set_tc_queue(struct net_device *dev, u8 tc, u16 count, u16 offset); int netdev_set_num_tc(struct net_device *dev, u8 num_tc); +u32 netdev_tc_map_to_queue_mask(struct net_device *dev, u32 tc_mask); static inline int netdev_get_num_tc(struct net_device *dev) diff --git a/net/core/dev.c b/net/core/dev.c index 991d09b67bd9..4b25dbd26243 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2956,6 +2956,26 @@ int netdev_set_num_tc(struct net_device *dev, u8 num_tc) } EXPORT_SYMBOL(netdev_set_num_tc); +u32 netdev_tc_map_to_queue_mask(struct net_device *dev, u32 tc_mask) +{ + u32 i, queue_mask = 0; + + for (i = 0; i < dev->num_tc; i++) { + u32 offset, count; + + if (!(tc_mask & BIT(i))) + continue; + + offset = dev->tc_to_txq[i].offset; + count = dev->tc_to_txq[i].count; + + queue_mask |= GENMASK(offset + count - 1, offset); + } + + return queue_mask; +} +EXPORT_SYMBOL(netdev_tc_map_to_queue_mask); + void netdev_unbind_sb_channel(struct net_device *dev, struct net_device *sb_dev) {
Converts from a bitmask specifying traffic classes (bit 0 for traffic class (TC) 0, bit 1 for TC 1, and so on) to a bitmask for queues. The conversion is done using the netdev.tc_to_txq map. netdev_tc_map_to_queue_mask() first users will be the mqprio and taprio qdiscs. Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com> --- include/linux/netdevice.h | 1 + net/core/dev.c | 20 ++++++++++++++++++++ 2 files changed, 21 insertions(+)