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
net/9p: fix double req put in p9_fd_cancelled
2025-10-29 13:59:54 +01:00
net: 802: LLC+SNAP OID:PID lookup on start of skb data
2025-02-01 18:18:45 +01:00
net: vlan: sync VLAN features with lower device
2025-12-03 12:45:15 +01:00
net: appletalk: Fix use-after-free in AARP proxy probe
2025-08-28 16:21:17 +02:00
net: atm: fix memory leak in atm_register_sysfs when device_register fail
2025-09-09 18:43:58 +02:00
BACKPORT: net: Make sock protocol value checks more specific
2025-12-23 13:35:52 -08:00
batman-adv: fix OOB read/write in network-coding decode
2025-09-09 18:43:59 +02:00
This is the 5.4.302 stable release
2025-12-03 14:36:44 +00:00
UPSTREAM: bpf: Allow to specify ifindex for skb in bpf_prog_test_run_skb
2026-01-14 18:12:12 -08:00
UPSTREAM: bpf: Add kernel module with user mode driver that populates bpffs.
2026-01-14 18:12:16 -08:00
BACKPORT: mm: remove the pgprot argument to __vmalloc
2026-01-14 17:48:09 -08:00
This is the 5.4.297 stable release
2025-09-02 10:52:40 +00:00
This is the 5.4.300 stable release
2025-10-02 13:53:47 +00:00
BACKPORT: tcp: Use a struct to represent a saved_syn
2026-01-14 18:12:17 -08:00
net: fix data-races around sk->sk_forward_alloc
2025-02-01 18:18:52 +01:00
net: dsa: microchip: linearize skb for tail-tagging switches
2025-09-09 18:44:00 +02:00
BACKPORT: tcp: Use a struct to represent a saved_syn
2026-01-14 18:12:17 -08:00
UPSTREAM: bpf: Refactor bpf_iter_reg to have separate seq_info member
2026-01-14 18:12:07 -08:00
llc: fix data loss when reading from a socket in llc_ui_recvmsg()
2025-06-04 14:32:35 +02:00
Merge branch 'android11-5.4-lts' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-12-11 01:41:51 -08:00
This is the 5.4.290 stable release
2025-02-05 17:00:16 +00:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
net: ncsi: Fix buffer overflow in fetching version id
2025-08-28 16:21:27 +02:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
calipso: unlock rcu before returning -EAFNOSUPPORT
2025-06-27 11:02:50 +01:00
UPSTREAM: bpf: Refactor bpf_iter_reg to have separate seq_info member
2026-01-14 18:12:07 -08:00
netrom: check buffer length before accessing it
2025-01-09 13:23:35 +01:00
NFC: nci: uart: Set tty->disc_data only in success path
2025-06-27 11:02:51 +01:00
net: openvswitch: remove never-working support for setting nsh fields
2025-12-03 12:45:20 +01:00
This is the 5.4.297 stable release
2025-09-02 10:52:40 +00:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
BACKPORT: tcp: add tcp_sock_set_keepidle
2026-01-14 17:50:47 -08:00
net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer
2025-10-02 13:34:32 +02:00
rose: fix dangling neighbour pointers in rose_rt_device_down()
2025-07-17 18:25:00 +02:00
rxrpc: Fix oops due to non-existence of prealloc backlog struct
2025-07-17 18:25:02 +02:00
BACKPORT: bpf: Add socket assign support
2025-12-23 13:36:11 -08:00
BACKPORT: sysctl: pass kernel pointers to ->proc_handler
2025-12-23 13:36:15 -08:00
net/smc: check sndbuf_space again after NOSPACE flag is set in smc_poll
2025-01-09 13:23:27 +01:00
strparser: Fix signed/unsigned mismatch bug
2025-12-03 12:45:19 +01:00
BACKPORT: tcp: add tcp_sock_set_keepidle
2026-01-14 17:50:47 -08:00
This is the 5.4.302 stable release
2025-12-03 14:36:44 +00:00
UPSTREAM: net, sk_msg: Annotate lockless access to sk_prot on clone
2025-12-23 13:36:03 -08:00
This is the 5.4.302 stable release
2025-12-03 14:36:44 +00:00
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: Set map_btf_{name, id} for all map types
2026-01-14 17:50:46 -08:00
This is the 5.4.294 stable release
2025-06-05 07:11:21 +00:00
65c272f187