| Message ID | 20210816115917.16800-1-toke@redhat.com (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | [net] sch_cake: fix srchost/dsthost hashing mode | 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 |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | fail | 2 blamed authors not CCed: davem@davemloft.net toke@toke.dk; 6 maintainers not CCed: davem@davemloft.net xiyou.wangcong@gmail.com toke@toke.dk jiri@resnulli.us jhs@mojatatu.com kuba@kernel.org |
| 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: 0 this patch: 0 |
| 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, 8 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
diff --git a/net/sched/sch_cake.c b/net/sched/sch_cake.c index 951542843cab..28af8b1e1bb1 100644 --- a/net/sched/sch_cake.c +++ b/net/sched/sch_cake.c @@ -720,7 +720,7 @@ static u32 cake_hash(struct cake_tin_data *q, const struct sk_buff *skb, skip_hash: if (flow_override) flow_hash = flow_override - 1; - else if (use_skbhash) + else if (use_skbhash && (flow_mode & CAKE_FLOW_FLOWS)) flow_hash = skb->hash; if (host_override) { dsthost_hash = host_override - 1;
When adding support for using the skb->hash value as the flow hash in CAKE, I accidentally introduced a logic error that broke the host-only isolation modes of CAKE (srchost and dsthost keywords). Specifically, the flow_hash variable should stay initialised to 0 in cake_hash() in pure host-based hashing mode. Add a check for this before using the skb->hash value as flow_hash. Fixes: b0c19ed6088a ("sch_cake: Take advantage of skb->hash where appropriate") Reported-by: Pete Heist <pete@heistp.net> Tested-by: Pete Heist <pete@heistp.net> Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> --- net/sched/sch_cake.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)