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b18afb6f42
linux/net
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Kuniyuki Iwashima b18afb6f42 tcp: Move tcp_ns_to_ts() to tcp.h 
We will support arbitrary SYN Cookie with BPF.

When BPF prog validates ACK and kfunc allocates a reqsk, we need
to call tcp_ns_to_ts() to calculate an offset of TSval for later
use:

  time
  t0 : Send SYN+ACK
       -> tsval = Initial TSval (Random Number)

  t1 : Recv ACK of 3WHS
       -> tsoff = TSecr - tcp_ns_to_ts(usec_ts_ok, tcp_clock_ns())
                = Initial TSval - t1

  t2 : Send ACK
       -> tsval = t2 + tsoff
                = Initial TSval + (t2 - t1)
                = Initial TSval + Time Delta (x)

  (x) Note that the time delta does not include the initial RTT
      from t0 to t1.

Let's move tcp_ns_to_ts() to tcp.h.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240115205514.68364-2-kuniyu@amazon.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-01-23 14:40:23 -08:00
..
6lowpan
9p net: 9p: avoid freeing uninit memory in p9pdu_vreadf 2023-12-13 05:44:30 +09:00
802 net: fill in MODULE_DESCRIPTION()s under net/802* 2023-10-28 11:29:28 +01:00
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-12-21 22:17:23 +01:00
appletalk net: remove SOCK_DEBUG leftovers 2023-12-26 20:31:01 +00:00
atm net: fill in MODULE_DESCRIPTION()s for ATM 2024-01-05 08:04:23 -08:00
ax25
batman-adv batman-adv: Switch to linux/array_size.h 2023-11-14 08:16:34 +01:00
bluetooth TTY/Serial changes for 6.8-rc1 2024-01-18 11:37:24 -08:00
bpf bpf: Fix dtor CFI 2023-12-15 16:25:55 -08:00
bridge netfilter: bridge: replace physindev with physinif in nf_bridge_info 2024-01-17 12:02:49 +01:00
caif net: fill in MODULE_DESCRIPTION()s for CAIF 2024-01-05 08:06:35 -08:00
can Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-12 17:07:34 -07:00
ceph This update includes the following changes: 2023-11-02 16:15:30 -10:00
core net: filter: fix spelling mistakes 2024-01-23 14:40:22 -08:00
dcb
dccp inet_diag: add module pointer to "struct inet_diag_handler" 2024-01-23 15:13:54 +01:00
devlink devlink: extend multicast filtering by port index 2023-12-19 15:31:40 +01:00
dns_resolver Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
dsa net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events 2024-01-11 16:33:52 -08:00
ethernet
ethtool ethtool: netlink: Add missing ethnl_ops_begin/complete 2024-01-18 13:21:06 +01:00
handshake Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-26 13:46:28 -07:00
hsr net: fill in MODULE_DESCRIPTION()s for HSR 2024-01-11 16:16:08 -08:00
ieee802154 mac802154: Avoid new associations while disassociating 2023-12-15 11:14:57 +01:00
ife net: sched: ife: fix potential use-after-free 2023-12-15 10:50:18 +00:00
ipv4 tcp: Move tcp_ns_to_ts() to tcp.h 2024-01-23 14:40:23 -08:00
ipv6 netfilter pull request 24-01-18 2024-01-18 12:45:05 -08:00
iucv iucv: make iucv_bus const 2023-12-29 07:46:38 +00:00
kcm net: kcm: fix direct access to bv_len 2024-01-03 18:37:22 -08:00
key
l2tp ipv6: annotate data-races around np->ucast_oif 2023-12-11 10:59:17 +00:00
l3mdev
lapb
llc llc: verify mac len before reading mac header 2023-11-01 22:21:32 -07:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-01-04 18:06:46 -08:00
mac802154 mac802154: Avoid new associations while disassociating 2023-12-15 11:14:57 +01:00
mctp mctp: perform route lookups under a RCU read-side lock 2023-10-10 19:43:22 -07:00
mpls
mptcp inet_diag: add module pointer to "struct inet_diag_handler" 2024-01-23 15:13:54 +01:00
ncsi net/ncsi: Add NC-SI 1.2 Get MC MAC Address command 2023-11-18 15:00:51 +00:00
netfilter ipvs: avoid stat macros calls from preemptible context 2024-01-17 12:02:51 +01:00
netlabel calipso: fix memory leak in netlbl_calipso_add_pass() 2023-12-07 14:23:12 -05:00
netlink sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
netrom
nfc net: fill in MODULE_DESCRIPTION()s for NFC 2024-01-11 16:16:08 -08:00
nsh
openvswitch net/sched: act_ct: Always fill offloading tuple iifidx 2023-11-08 17:47:08 -08:00
packet sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
phonet
psample genetlink: Use internal flags for multicast groups 2023-12-29 08:43:59 +00:00
qrtr net: qrtr: ns: Return 0 if server port is not present 2024-01-01 18:41:29 +00:00
rds ipv6: annotate data-races around np->mcast_oif 2023-12-11 10:59:17 +00:00
rfkill Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-12-21 22:17:23 +01:00
rose net/rose: fix races in rose_kill_by_device() 2023-12-15 11:59:53 +00:00
rxrpc rxrpc: Fix use of Don't Fragment flag 2024-01-11 16:41:41 -08:00
sched net: sched: track device in tcf_block_get/put_ext() only for clsact binder types 2024-01-13 15:49:15 +00:00
sctp inet_diag: add module pointer to "struct inet_diag_handler" 2024-01-23 15:13:54 +01:00
smc sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
strparser
sunrpc net: fill in MODULE_DESCRIPTION()s for Sun RPC 2024-01-11 16:16:08 -08:00
switchdev
tipc sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
tls net: tls, fix WARNIING in __sk_msg_free 2024-01-14 12:17:14 +00:00
unix sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
vmw_vsock sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
wireless Just a couple of more things over the holidays: 2024-01-04 17:00:08 -08:00
x25 net: remove SOCK_DEBUG leftovers 2023-12-26 20:31:01 +00:00
xdp sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
xfrm bpf: xfrm: Add bpf_xdp_get_xfrm_state() kfunc 2023-12-14 17:12:49 -08:00
compat.c file: stop exposing receive_fd_user() 2023-12-12 14:24:14 +01:00
devres.c
Kconfig bpfilter: remove bpfilter 2024-01-04 10:23:10 -08:00
Kconfig.debug
Makefile bpfilter: remove bpfilter 2024-01-04 10:23:10 -08:00
socket.c vfs-6.8.iov_iter 2024-01-08 11:43:04 -08:00
sysctl_net.c