Martin KaFai Lau
65c272f187
BACKPORT: tcp: Use a struct to represent a saved_syn ...
The TCP_SAVE_SYN has both the network header and tcp header.
The total length of the saved syn packet is currently stored in
the first 4 bytes (u32) of an array and the actual packet data is
stored after that.
A later patch will add a bpf helper that allows to get the tcp header
alone from the saved syn without the network header. It will be more
convenient to have a direct offset to a specific header instead of
re-parsing it. This requires to separately store the network hdrlen.
The total header length (i.e. network + tcp) is still needed for the
current usage in getsockopt. Although this total length can be obtained
by looking into the tcphdr and then get the (th->doff << 2), this patch
chooses to directly store the tcp hdrlen in the second four bytes of
this newly created "struct saved_syn". By using a new struct, it can
give a readable name to each individual header length.
Change-Id: I4ba88ba12fed185f61c74c01b4eaf7f09d26299b
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200820190014.2883694-1-kafai@fb.com
2026-01-14 18:12:17 -08:00
This is the 5.4.279 stable release
2024-07-08 13:55:50 +00:00
netfilter: nf_tables: do not defer rule destruction via call_rcu
2025-06-04 14:32:36 +02:00
UPSTREAM: bpf, netns: Keep a list of attached bpf_link's
2026-01-14 17:53:12 -08:00
net: nfc: nci: Increase NCI_DATA_TIMEOUT to 3000 ms
2025-12-03 12:45:11 +01:00
sctp: detect and prevent references to a freed transport in sendmsg
2025-05-02 07:39:16 +02:00
net: sched: extract qstats update code into functions
2025-08-28 16:21:36 +02:00
This is the 5.4.275 stable release
2024-05-15 16:00:38 +00:00
UPSTREAM: af_unix: Do not use atomic ops for unix_sk(sk)->inflight.
2024-07-02 13:43:53 +03:00
bonding: fix macvlan over alb bond support
2023-08-30 16:27:24 +02:00
UPSTREAM: bpf: INET_DIAG support in bpf_sk_storage
2025-12-23 13:36:00 -08:00
net: busy-poll: use ktime_get_ns() instead of local_clock()
2024-09-04 13:15:03 +02:00
Merge tag 'ASB-2025-10-06_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-10-08 15:17:54 +03:00
UPSTREAM: bpf: Allow to retrieve cgroup v1 classid from v2 hooks
2025-12-23 13:36:09 -08:00
UPSTREAM: wireguard: device: reset peer src endpoint when netns exits
2025-09-24 12:16:39 +02:00
net: fix __dst_negative_advice() race
2024-06-16 13:28:52 +02:00
erspan: Add type I version 0 support.
2024-04-13 12:51:36 +02:00
Revert "inet: shrink struct flowi_common"
2023-11-27 17:25:07 +00:00
UPSTREAM: flow_dissector: Pull BPF program assignment up to bpf-netns
2026-01-14 17:53:12 -08:00
net: extract port range fields from fl_flow_key
2025-03-13 12:43:23 +01:00
Revert "genetlink: hold RCU in genlmsg_mcast()"
2024-11-09 16:39:42 +00:00
net: ipv6: support reporting otherwise unknown prefix flags in RTM_NEWPREFIX
2023-12-20 15:41:13 +01:00
UPSTREAM: net: Track socket refcounts in skb_steal_sock()
2025-12-23 13:36:11 -08:00
UPSTREAM: bpf: Allow any port in bpf_bind helper
2025-12-23 13:36:18 -08:00
This is the 5.4.290 stable release
2025-02-05 17:00:16 +00:00
UPSTREAM: net: Track socket refcounts in skb_steal_sock()
2025-12-23 13:36:11 -08:00
UPSTREAM: bpf: Enable bpf_iter targets registering ctx argument types
2026-01-14 17:41:40 -08:00
Merge tag 'ASB-2025-12-01_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-12-04 19:21:35 +02:00
UPSTREAM: net: Refactor arguments of inet{,6}_bind
2025-12-23 13:36:18 -08:00
kcm: Serialise kcm_sendmsg() for the same socket.
2024-09-04 13:14:59 +02:00
vrf: use RCU protection in l3mdev_l3_out()
2025-03-13 12:43:12 +01:00
net: lapb: increase LAPB_HEADER_LEN
2024-12-19 18:05:03 +01:00
llc: Drop support for ETH_P_TR_802_2.
2024-02-23 08:24:50 +01:00
lwt: Check LWTUNNEL_XMIT_CONTINUE strictly
2023-09-23 10:59:42 +02:00
mac80211: Add support to trigger sta disconnect on hardware restart
2024-11-08 16:20:52 +01:00
Merge android11-5.4.249+ ( d57e792) into msm-5.4
2023-09-28 16:45:28 +05:30
UPSTREAM: net: push loops and nb calls into helper functions
2026-01-14 18:12:09 -08:00
net/sched: sch_qfq: Fix null-deref in agg_dequeue
2025-12-03 12:45:04 +01:00
BACKPORT: tcp: Use a struct to represent a saved_syn
2026-01-14 18:12:17 -08:00
Revert "net: rtnetlink: add msg kind names"
2025-10-31 07:58:56 +00:00
This is the 5.4.297 stable release
2025-09-02 10:52:40 +00:00
UPSTREAM: seg6: fix seg6_validate_srh() to avoid slab-out-of-bounds
2026-01-14 17:48:10 -08:00
UPSTREAM: bpf: net: Avoid incorrect bpf_sk_reuseport_detach call
2026-01-14 18:12:02 -08:00
UPSTREAM: net: Generate reuseport group ID on group creation
2025-12-23 13:35:57 -08:00
UPSTREAM: net: bpf: Add bpf_seq_afinfo in tcp_iter_state
2026-01-14 18:12:05 -08:00
UPSTREAM: net: bpf: Add bpf_seq_afinfo in udp_iter_state
2026-01-14 18:12:06 -08:00
BACKPORT: udp_tunnel: add central NIC RX port offload infrastructure
2026-01-14 18:12:10 -08:00
UPSTREAM: bpf: cpumap: Add the possibility to attach an eBPF program to cpumap
2026-01-14 18:12:04 -08:00
UPSTREAM: xsk: Move xskmap.c to net/xdp/
2026-01-14 17:48:04 -08:00
This is the 5.4.276 stable release
2024-05-17 15:29:56 +00:00
65c272f187