linux-kernel - [RFC PATCH bpf-next v7 0/3] Replace mono_delivery_time with tstamp

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Message-Id: <20240508215842.2449798-1-quic_abchauha@quicinc.com>
Date: Wed,  8 May 2024 14:58:39 -0700
From: Abhishek Chauhan <quic_abchauha@...cinc.com>
To: "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Andrew Halaney <ahalaney@...hat.com>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>,
        Martin KaFai Lau <martin.lau@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        Daniel Borkmann <daniel@...earbox.net>, bpf <bpf@...r.kernel.org>
Cc: kernel@...cinc.com
Subject: [RFC PATCH bpf-next v7 0/3] Replace mono_delivery_time with tstamp_type

Patch 1 :- This patch takes care of only renaming the mono delivery
timestamp to tstamp_type with no change in functionality of 
existing available code in kernel also  
Starts assigning tstamp_type with either mono or real and 
introduces a new enum in the skbuff.h, again no change in functionality 
of the existing available code in kernel , just making the code scalable.

Patch 2 :- Additional bit was added to support tai timestamp type to 
avoid tstamp drops in the forwarding path when testing TC-ETF. 
Patch is also updating bpf filter.c
Some updates to bpf header files with introduction to BPF_SKB_CLOCK_TAI
and documentation updates stating deprecation of BPF_SKB_TSTAMP_UNSPEC 
and BPF_SKB_TSTAMP_DELIVERY_MONO 

Patch 3:- Handles forwarding of UDP packets with TAI clock id tstamp_type
type with supported changes for tc_redirect/tc_redirect_dtime
to handle forwarding of UDP packets with TAI tstamp_type 

Abhishek Chauhan (3):
  net: Rename mono_delivery_time to tstamp_type for scalabilty
  net: Add additional bit to support clockid_t timestamp type
  selftests/bpf: Handle forwarding of UDP CLOCK_TAI packets

 include/linux/skbuff.h                        | 68 ++++++++++++++-----
 include/net/inet_frag.h                       |  4 +-
 include/uapi/linux/bpf.h                      | 15 ++--
 net/bridge/netfilter/nf_conntrack_bridge.c    |  6 +-
 net/core/dev.c                                |  2 +-
 net/core/filter.c                             | 54 ++++++++-------
 net/ieee802154/6lowpan/reassembly.c           |  2 +-
 net/ipv4/inet_fragment.c                      |  2 +-
 net/ipv4/ip_fragment.c                        |  2 +-
 net/ipv4/ip_output.c                          | 14 ++--
 net/ipv4/raw.c                                |  2 +-
 net/ipv4/tcp_ipv4.c                           |  2 +
 net/ipv4/tcp_output.c                         | 14 ++--
 net/ipv6/ip6_output.c                         | 11 +--
 net/ipv6/netfilter.c                          |  6 +-
 net/ipv6/netfilter/nf_conntrack_reasm.c       |  2 +-
 net/ipv6/raw.c                                |  2 +-
 net/ipv6/reassembly.c                         |  2 +-
 net/ipv6/tcp_ipv6.c                           | 12 +++-
 net/packet/af_packet.c                        |  7 +-
 net/sched/act_bpf.c                           |  4 +-
 net/sched/cls_bpf.c                           |  4 +-
 tools/include/uapi/linux/bpf.h                | 15 ++--
 .../selftests/bpf/prog_tests/ctx_rewrite.c    | 10 +--
 .../selftests/bpf/prog_tests/tc_redirect.c    |  3 -
 .../selftests/bpf/progs/test_tc_dtime.c       | 39 +++++------
 26 files changed, 181 insertions(+), 123 deletions(-)

-- 
2.25.1