Fork of alistair23 Linux kernel for reMarkable from https://github.com/alistair23/linux
4b5026ade5
Or Gerlitz says: ==================== net/sched: Reflect HW offload status in classifiers Currently there is no way of querying whether a filter is offloaded to HW or not when using "both" policy (where none of skip_sw or skip_hw flags are set by user-space). Added two new flags, "in hw" and "not in hw" such that user space can determine if a filter is actually offloaded to hw. The "in hw" UAPI semantics was chosen so it's similar to the "skip hw" flag logic. If none of these two flags are set, this signals running over older kernel. As an example, add one vlan push + fwd rule, one matchall rule and one u32 rule without any flags, and another vlan + fwd skip_sw rule, such that the different TC classifier attempt to offload all of them -- all over mlx5 SRIOV VF rep: flower skip_sw indev eth2_0 src_mac e4:11:22:33:44:50 dst_mac e4:1d:2d:a5:f3:9d action vlan push id 52 action mirred egress redirect dev eth2 flower indev eth2_0 src_mac e4:11:22:33:44:50 dst_mac e4:11:22:33:44:51 action vlan push id 53 action mirred egress redirect dev eth2 u32 ht 800: flowid 800:1 match ip src 192.168.1.0/24 action drop Since that VF rep doesn't offload matchall/u32 and can currently offload only one vlan push rule we expect three of the rules not to be offloaded: filter protocol ip pref 99 u32 filter protocol ip pref 99 u32 fh 800: ht divisor 1 filter protocol ip pref 99 u32 fh 800::1 order 1 key ht 800 bkt 0 flowid 800:1 not in_hw match c0a80100/ffffff00 at 12 action order 1: gact action drop random type none pass val 0 index 8 ref 1 bind 1 filter protocol all pref 49150 matchall filter protocol all pref 49150 matchall handle 0x1 not in_hw action order 1: mirred (Egress Mirror to device veth1) pipe index 27 ref 1 bind 1 filter protocol ip pref 49151 flower filter protocol ip pref 49151 flower handle 0x1 indev eth2_0 dst_mac e4:11:22:33:44:51 src_mac e4:11:22:33:44:50 eth_type ipv4 not in_hw action order 1: vlan push id 53 protocol 802.1Q priority 0 pipe index 20 ref 1 bind 1 action order 2: mirred (Egress Redirect to device eth2) stolen index 26 ref 1 bind 1 filter protocol ip pref 49152 flower filter protocol ip pref 49152 flower handle 0x1 indev eth2_0 dst_mac e4:1d:2d:a5:f3:9d src_mac e4:11:22:33:44:50 eth_type ipv4 skip_sw in_hw action order 1: vlan push id 52 protocol 802.1Q priority 0 pipe index 19 ref 1 bind 1 action order 2: mirred (Egress Redirect to device eth2) stolen index 25 ref 1 bind 1 v3 --> v4 changes: - removed extra parenthesis (Dave) v2 --> v3 changes: - fixed the matchall dump flags patch to do proper checks (Jakub) - added the same proper checks to flower where they were missing - that flower patch was added as #1 and hence all the other patches are offed-by-one v1 --> v2 changes: - applied feedback from Jakub and Dave -- where none of the skip flags were set, the suggested approach didn't allow user space to distringuish between old kernel to a case when offloading to HW worked fine. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
README
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.