Hi!
This series updates the GRED Qdisc. The Qdisc matches nfp offload very
well, but before we can offload it there are a number of improvements
to make.
First few patches add extack messages to the Qdisc and pass extack
to netlink validation.
Next a new netlink attribute group is added, to allow GRED to be
extended more easily. Currently GRED passes C structures as attributes,
and even an array of C structs for virtual queue configuration. User
space has hard coded the expected length of that array, so adding new
fields is not possible.
New two-level attribute group is added:
[TCA_GRED_VQ_LIST]
[TCA_GRED_VQ_ENTRY]
[TCA_GRED_VQ_DP]
[TCA_GRED_VQ_FLAGS]
[TCA_GRED_VQ_STAT_*]
[TCA_GRED_VQ_ENTRY]
[TCA_GRED_VQ_DP]
[TCA_GRED_VQ_FLAGS]
[TCA_GRED_VQ_STAT_*]
[TCA_GRED_VQ_ENTRY]
...
Statistics are dump only. Patch 4 switches the byte counts to be 64 bit,
and patch 5 introduces the new stats attributes for dump. Patch 6
switches RED flags to be per-virtual queue, and patch 7 allows them
to be dumped and set at virtual queue granularity.
Jakub Kicinski (7):
net: sched: gred: separate error and non-error path in gred_change()
net: sched: gred: pass extack to nla_parse_nested()
net: sched: gred: use extack to provide more details on configuration
errors
net: sched: gred: store bytesin as a 64 bit value
net: sched: gred: provide a better structured dump and expose stats
net: sched: gred: store red flags per virtual queue
net: sched: gred: allow manipulating per-DP RED flags
include/uapi/linux/pkt_sched.h | 27 ++++
net/sched/sch_gred.c | 281 +++++++++++++++++++++++++++++----
2 files changed, 281 insertions(+), 27 deletions(-)
--
2.17.1
