diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-12-14 13:11:49 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-12-14 13:11:49 -0800 |
commit | c7402612e2e61b76177f22e6e7f705adcbecc6fe (patch) | |
tree | 377d0654bce2136c59dc192699e2d2655b336e7a /net/ipv4/tcp_input.c | |
parent | bdb2701f0b6822d711ec34968ccef70b73a91da7 (diff) | |
parent | 7bb26ea74aa86fdf894b7dbd8c5712c5b4187da7 (diff) |
Merge tag 'net-6.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Current release - regressions:
- tcp: fix tcp_disordered_ack() vs usec TS resolution
Current release - new code bugs:
- dpll: sanitize possible null pointer dereference in
dpll_pin_parent_pin_set()
- eth: octeon_ep: initialise control mbox tasks before using APIs
Previous releases - regressions:
- io_uring/af_unix: disable sending io_uring over sockets
- eth: mlx5e:
- TC, don't offload post action rule if not supported
- fix possible deadlock on mlx5e_tx_timeout_work
- eth: iavf: fix iavf_shutdown to call iavf_remove instead iavf_close
- eth: bnxt_en: fix skb recycling logic in bnxt_deliver_skb()
- eth: ena: fix DMA syncing in XDP path when SWIOTLB is on
- eth: team: fix use-after-free when an option instance allocation
fails
Previous releases - always broken:
- neighbour: don't let neigh_forced_gc() disable preemption for long
- net: prevent mss overflow in skb_segment()
- ipv6: support reporting otherwise unknown prefix flags in
RTM_NEWPREFIX
- tcp: remove acked SYN flag from packet in the transmit queue
correctly
- eth: octeontx2-af:
- fix a use-after-free in rvu_nix_register_reporters
- fix promisc mcam entry action
- eth: dwmac-loongson: make sure MDIO is initialized before use
- eth: atlantic: fix double free in ring reinit logic"
* tag 'net-6.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (62 commits)
net: atlantic: fix double free in ring reinit logic
appletalk: Fix Use-After-Free in atalk_ioctl
net: stmmac: Handle disabled MDIO busses from devicetree
net: stmmac: dwmac-qcom-ethqos: Fix drops in 10M SGMII RX
dpaa2-switch: do not ask for MDB, VLAN and FDB replay
dpaa2-switch: fix size of the dma_unmap
net: prevent mss overflow in skb_segment()
vsock/virtio: Fix unsigned integer wrap around in virtio_transport_has_space()
Revert "tcp: disable tcp_autocorking for socket when TCP_NODELAY flag is set"
MIPS: dts: loongson: drop incorrect dwmac fallback compatible
stmmac: dwmac-loongson: drop useless check for compatible fallback
stmmac: dwmac-loongson: Make sure MDIO is initialized before use
tcp: disable tcp_autocorking for socket when TCP_NODELAY flag is set
dpll: sanitize possible null pointer dereference in dpll_pin_parent_pin_set()
net: ena: Fix XDP redirection error
net: ena: Fix DMA syncing in XDP path when SWIOTLB is on
net: ena: Fix xdp drops handling due to multibuf packets
net: ena: Destroy correct number of xdp queues upon failure
net: Remove acked SYN flag from packet in the transmit queue correctly
qed: Fix a potential use-after-free in qed_cxt_tables_alloc
...
Diffstat (limited to 'net/ipv4/tcp_input.c')
-rw-r--r-- | net/ipv4/tcp_input.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 90de838a2745..701cb87043f2 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -4368,6 +4368,23 @@ EXPORT_SYMBOL(tcp_do_parse_auth_options); * up to bandwidth of 18Gigabit/sec. 8) ] */ +/* Estimates max number of increments of remote peer TSval in + * a replay window (based on our current RTO estimation). + */ +static u32 tcp_tsval_replay(const struct sock *sk) +{ + /* If we use usec TS resolution, + * then expect the remote peer to use the same resolution. + */ + if (tcp_sk(sk)->tcp_usec_ts) + return inet_csk(sk)->icsk_rto * (USEC_PER_SEC / HZ); + + /* RFC 7323 recommends a TSval clock between 1ms and 1sec. + * We know that some OS (including old linux) can use 1200 Hz. + */ + return inet_csk(sk)->icsk_rto * 1200 / HZ; +} + static int tcp_disordered_ack(const struct sock *sk, const struct sk_buff *skb) { const struct tcp_sock *tp = tcp_sk(sk); @@ -4375,7 +4392,7 @@ static int tcp_disordered_ack(const struct sock *sk, const struct sk_buff *skb) u32 seq = TCP_SKB_CB(skb)->seq; u32 ack = TCP_SKB_CB(skb)->ack_seq; - return (/* 1. Pure ACK with correct sequence number. */ + return /* 1. Pure ACK with correct sequence number. */ (th->ack && seq == TCP_SKB_CB(skb)->end_seq && seq == tp->rcv_nxt) && /* 2. ... and duplicate ACK. */ @@ -4385,7 +4402,8 @@ static int tcp_disordered_ack(const struct sock *sk, const struct sk_buff *skb) !tcp_may_update_window(tp, ack, seq, ntohs(th->window) << tp->rx_opt.snd_wscale) && /* 4. ... and sits in replay window. */ - (s32)(tp->rx_opt.ts_recent - tp->rx_opt.rcv_tsval) <= (inet_csk(sk)->icsk_rto * 1024) / HZ); + (s32)(tp->rx_opt.ts_recent - tp->rx_opt.rcv_tsval) <= + tcp_tsval_replay(sk); } static inline bool tcp_paws_discard(const struct sock *sk, |