Merge tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "Core:

   - Implement the Device Memory TCP transmit path, allowing zero-copy
     data transmission on top of TCP from e.g. GPU memory to the wire.

   - Move all the IPv6 routing tables management outside the RTNL scope,
     under its own lock and RCU. The route control path is now 3x times
     faster.

   - Convert queue related netlink ops to instance lock, reducing again
     the scope of the RTNL lock. This improves the control plane
     scalability.

   - Refactor the software crc32c implementation, removing unneeded
     abstraction layers and improving significantly the related
     micro-benchmarks.

   - Optimize the GRO engine for UDP-tunneled traffic, for a 10%
     performance improvement in related stream tests.

   - Cover more per-CPU storage with local nested BH locking; this is a
     prep work to remove the current per-CPU lock in local_bh_disable()
     on PREMPT_RT.

   - Introduce and use nlmsg_payload helper, combining buffer bounds
     verification with accessing payload carried by netlink messages.

  Netfilter:

   - Rewrite the procfs conntrack table implementation, improving
     considerably the dump performance. A lot of user-space tools still
     use this interface.

   - Implement support for wildcard netdevice in netdev basechain and
     flowtables.

   - Integrate conntrack information into nft trace infrastructure.

   - Export set count and backend name to userspace, for better
     introspection.

  BPF:

   - BPF qdisc support: BPF-qdisc can be implemented with BPF struct_ops
     programs and can be controlled in similar way to traditional qdiscs
     using the "tc qdisc" command.

   - Refactor the UDP socket iterator, addressing long standing issues
     WRT duplicate hits or missed sockets.

  Protocols:

   - Improve TCP receive buffer auto-tuning and increase the default
     upper bound for the receive buffer; overall this improves the
     single flow maximum thoughput on 200Gbs link by over 60%.

   - Add AFS GSSAPI security class to AF_RXRPC; it provides transport
     security for connections to the AFS fileserver and VL server.

   - Improve TCP multipath routing, so that the sources address always
     matches the nexthop device.

   - Introduce SO_PASSRIGHTS for AF_UNIX, to allow disabling SCM_RIGHTS,
     and thus preventing DoS caused by passing around problematic FDs.

   - Retire DCCP socket. DCCP only receives updates for bugs, and major
     distros disable it by default. Its removal allows for better
     organisation of TCP fields to reduce the number of cache lines hit
     in the fast path.

   - Extend TCP drop-reason support to cover PAWS checks.

  Driver API:

   - Reorganize PTP ioctl flag support to require an explicit opt-in for
     the drivers, avoiding the problem of drivers not rejecting new
     unsupported flags.

   - Converted several device drivers to timestamping APIs.

   - Introduce per-PHY ethtool dump helpers, improving the support for
     dump operations targeting PHYs.

  Tests and tooling:

   - Add support for classic netlink in user space C codegen, so that
     ynl-c can now read, create and modify links, routes addresses and
     qdisc layer configuration.

   - Add ynl sub-types for binary attributes, allowing ynl-c to output
     known struct instead of raw binary data, clarifying the classic
     netlink output.

   - Extend MPTCP selftests to improve the code-coverage.

   - Add tests for XDP tail adjustment in AF_XDP.

  New hardware / drivers:

   - OpenVPN virtual driver: offload OpenVPN data channels processing to
     the kernel-space, increasing the data transfer throughput WRT the
     user-space implementation.

   - Renesas glue driver for the gigabit ethernet RZ/V2H(P) SoC.

   - Broadcom asp-v3.0 ethernet driver.

   - AMD Renoir ethernet device.

   - ReakTek MT9888 2.5G ethernet PHY driver.

   - Aeonsemi 10G C45 PHYs driver.

  Drivers:

   - Ethernet high-speed NICs:
       - nVidia/Mellanox (mlx5):
           - refactor the steering table handling to significantly
             reduce the amount of memory used
           - add support for complex matches in H/W flow steering
           - improve flow streeing error handling
           - convert to netdev instance locking
       - Intel (100G, ice, igb, ixgbe, idpf):
           - ice: add switchdev support for LLDP traffic over VF
           - ixgbe: add firmware manipulation and regions devlink support
           - igb: introduce support for frame transmission premption
           - igb: adds persistent NAPI configuration
           - idpf: introduce RDMA support
           - idpf: add initial PTP support
       - Meta (fbnic):
           - extend hardware stats coverage
           - add devlink dev flash support
       - Broadcom (bnxt):
           - add support for RX-side device memory TCP
       - Wangxun (txgbe):
           - implement support for udp tunnel offload
           - complete PTP and SRIOV support for AML 25G/10G devices

   - Ethernet NICs embedded and virtual:
       - Google (gve):
           - add device memory TCP TX support
       - Amazon (ena):
           - support persistent per-NAPI config
       - Airoha:
           - add H/W support for L2 traffic offload
           - add per flow stats for flow offloading
       - RealTek (rtl8211): add support for WoL magic packet
       - Synopsys (stmmac):
           - dwmac-socfpga 1000BaseX support
           - add Loongson-2K3000 support
           - introduce support for hardware-accelerated VLAN stripping
       - Broadcom (bcmgenet):
           - expose more H/W stats
       - Freescale (enetc, dpaa2-eth):
           - enetc: add MAC filter, VLAN filter RSS and loopback support
           - dpaa2-eth: convert to H/W timestamping APIs
       - vxlan: convert FDB table to rhashtable, for better scalabilty
       - veth: apply qdisc backpressure on full ring to reduce TX drops

   - Ethernet switches:
       - Microchip (kzZ88x3): add ETS scheduler support

   - Ethernet PHYs:
       - RealTek (rtl8211):
           - add support for WoL magic packet
           - add support for PHY LEDs

   - CAN:
       - Adds RZ/G3E CANFD support to the rcar_canfd driver.
       - Preparatory work for CAN-XL support.
       - Add self-tests framework with support for CAN physical interfaces.

   - WiFi:
       - mac80211:
           - scan improvements with multi-link operation (MLO)
       - Qualcomm (ath12k):
           - enable AHB support for IPQ5332
           - add monitor interface support to QCN9274
           - add multi-link operation support to WCN7850
           - add 802.11d scan offload support to WCN7850
           - monitor mode for WCN7850, better 6 GHz regulatory
       - Qualcomm (ath11k):
           - restore hibernation support
       - MediaTek (mt76):
           - WiFi-7 improvements
           - implement support for mt7990
       - Intel (iwlwifi):
           - enhanced multi-link single-radio (EMLSR) support on 5 GHz links
           - rework device configuration
       - RealTek (rtw88):
           - improve throughput for RTL8814AU
       - RealTek (rtw89):
           - add multi-link operation support
           - STA/P2P concurrency improvements
           - support different SAR configs by antenna

   - Bluetooth:
       - introduce HCI Driver protocol
       - btintel_pcie: do not generate coredump for diagnostic events
       - btusb: add HCI Drv commands for configuring altsetting
       - btusb: add RTL8851BE device 0x0bda:0xb850
       - btusb: add new VID/PID 13d3/3584 for MT7922
       - btusb: add new VID/PID 13d3/3630 and 13d3/3613 for MT7925
       - btnxpuart: implement host-wakeup feature"

* tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1611 commits)
  selftests/bpf: Fix bpf selftest build warning
  selftests: netfilter: Fix skip of wildcard interface test
  net: phy: mscc: Stop clearing the the UDPv4 checksum for L2 frames
  net: openvswitch: Fix the dead loop of MPLS parse
  calipso: Don't call calipso functions for AF_INET sk.
  selftests/tc-testing: Add a test for HFSC eltree double add with reentrant enqueue behaviour on netem
  net_sched: hfsc: Address reentrant enqueue adding class to eltree twice
  octeontx2-pf: QOS: Refactor TC_HTB_LEAF_DEL_LAST callback
  octeontx2-pf: QOS: Perform cache sync on send queue teardown
  net: mana: Add support for Multi Vports on Bare metal
  net: devmem: ncdevmem: remove unused variable
  net: devmem: ksft: upgrade rx test to send 1K data
  net: devmem: ksft: add 5 tuple FS support
  net: devmem: ksft: add exit_wait to make rx test pass
  net: devmem: ksft: add ipv4 support
  net: devmem: preserve sockc_err
  page_pool: fix ugly page_pool formatting
  net: devmem: move list_add to net_devmem_bind_dmabuf.
  selftests: netfilter: nft_queue.sh: include file transfer duration in log message
  net: phy: mscc: Fix memory leak when using one step timestamping
  ...

1 files changed, 0 insertions, 272 deletions

diff --git a/net/dccp/timer.c b/net/dccp/timer.c
deleted file mode 100644
index 232ac4ae0a73..000000000000
--- a/net/dccp/timer.c
+++ /dev/null
@@ -1,272 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  net/dccp/timer.c
- *
- *  An implementation of the DCCP protocol
- *  Arnaldo Carvalho de Melo <acme@conectiva.com.br>
- */
-
-#include <linux/dccp.h>
-#include <linux/skbuff.h>
-#include <linux/export.h>
-
-#include "dccp.h"
-
-/* sysctl variables governing numbers of retransmission attempts */
-int  sysctl_dccp_request_retries	__read_mostly = TCP_SYN_RETRIES;
-int  sysctl_dccp_retries1		__read_mostly = TCP_RETR1;
-int  sysctl_dccp_retries2		__read_mostly = TCP_RETR2;
-
-static void dccp_write_err(struct sock *sk)
-{
-	sk->sk_err = READ_ONCE(sk->sk_err_soft) ? : ETIMEDOUT;
-	sk_error_report(sk);
-
-	dccp_send_reset(sk, DCCP_RESET_CODE_ABORTED);
-	dccp_done(sk);
-	__DCCP_INC_STATS(DCCP_MIB_ABORTONTIMEOUT);
-}
-
-/* A write timeout has occurred. Process the after effects. */
-static int dccp_write_timeout(struct sock *sk)
-{
-	const struct inet_connection_sock *icsk = inet_csk(sk);
-	int retry_until;
-
-	if (sk->sk_state == DCCP_REQUESTING || sk->sk_state == DCCP_PARTOPEN) {
-		if (icsk->icsk_retransmits != 0)
-			dst_negative_advice(sk);
-		retry_until = icsk->icsk_syn_retries ?
-			    : sysctl_dccp_request_retries;
-	} else {
-		if (icsk->icsk_retransmits >= sysctl_dccp_retries1) {
-			/* NOTE. draft-ietf-tcpimpl-pmtud-01.txt requires pmtu
-			   black hole detection. :-(
-
-			   It is place to make it. It is not made. I do not want
-			   to make it. It is disguisting. It does not work in any
-			   case. Let me to cite the same draft, which requires for
-			   us to implement this:
-
-   "The one security concern raised by this memo is that ICMP black holes
-   are often caused by over-zealous security administrators who block
-   all ICMP messages.  It is vitally important that those who design and
-   deploy security systems understand the impact of strict filtering on
-   upper-layer protocols.  The safest web site in the world is worthless
-   if most TCP implementations cannot transfer data from it.  It would
-   be far nicer to have all of the black holes fixed rather than fixing
-   all of the TCP implementations."
-
-			   Golden words :-).
-		   */
-
-			dst_negative_advice(sk);
-		}
-
-		retry_until = sysctl_dccp_retries2;
-		/*
-		 * FIXME: see tcp_write_timout and tcp_out_of_resources
-		 */
-	}
-
-	if (icsk->icsk_retransmits >= retry_until) {
-		/* Has it gone just too far? */
-		dccp_write_err(sk);
-		return 1;
-	}
-	return 0;
-}
-
-/*
- *	The DCCP retransmit timer.
- */
-static void dccp_retransmit_timer(struct sock *sk)
-{
-	struct inet_connection_sock *icsk = inet_csk(sk);
-
-	/*
-	 * More than 4MSL (8 minutes) has passed, a RESET(aborted) was
-	 * sent, no need to retransmit, this sock is dead.
-	 */
-	if (dccp_write_timeout(sk))
-		return;
-
-	/*
-	 * We want to know the number of packets retransmitted, not the
-	 * total number of retransmissions of clones of original packets.
-	 */
-	if (icsk->icsk_retransmits == 0)
-		__DCCP_INC_STATS(DCCP_MIB_TIMEOUTS);
-
-	if (dccp_retransmit_skb(sk) != 0) {
-		/*
-		 * Retransmission failed because of local congestion,
-		 * do not backoff.
-		 */
-		if (--icsk->icsk_retransmits == 0)
-			icsk->icsk_retransmits = 1;
-		inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
-					  min(icsk->icsk_rto,
-					      TCP_RESOURCE_PROBE_INTERVAL),
-					  DCCP_RTO_MAX);
-		return;
-	}
-
-	icsk->icsk_backoff++;
-
-	icsk->icsk_rto = min(icsk->icsk_rto << 1, DCCP_RTO_MAX);
-	inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS, icsk->icsk_rto,
-				  DCCP_RTO_MAX);
-	if (icsk->icsk_retransmits > sysctl_dccp_retries1)
-		__sk_dst_reset(sk);
-}
-
-static void dccp_write_timer(struct timer_list *t)
-{
-	struct inet_connection_sock *icsk =
-			from_timer(icsk, t, icsk_retransmit_timer);
-	struct sock *sk = &icsk->icsk_inet.sk;
-	int event = 0;
-
-	bh_lock_sock(sk);
-	if (sock_owned_by_user(sk)) {
-		/* Try again later */
-		sk_reset_timer(sk, &icsk->icsk_retransmit_timer,
-			       jiffies + (HZ / 20));
-		goto out;
-	}
-
-	if (sk->sk_state == DCCP_CLOSED || !icsk->icsk_pending)
-		goto out;
-
-	if (time_after(icsk_timeout(icsk), jiffies)) {
-		sk_reset_timer(sk, &icsk->icsk_retransmit_timer,
-			       icsk_timeout(icsk));
-		goto out;
-	}
-
-	event = icsk->icsk_pending;
-	icsk->icsk_pending = 0;
-
-	switch (event) {
-	case ICSK_TIME_RETRANS:
-		dccp_retransmit_timer(sk);
-		break;
-	}
-out:
-	bh_unlock_sock(sk);
-	sock_put(sk);
-}
-
-static void dccp_keepalive_timer(struct timer_list *t)
-{
-	struct sock *sk = from_timer(sk, t, sk_timer);
-
-	pr_err("dccp should not use a keepalive timer !\n");
-	sock_put(sk);
-}
-
-/* This is the same as tcp_delack_timer, sans prequeue & mem_reclaim stuff */
-static void dccp_delack_timer(struct timer_list *t)
-{
-	struct inet_connection_sock *icsk =
-			from_timer(icsk, t, icsk_delack_timer);
-	struct sock *sk = &icsk->icsk_inet.sk;
-
-	bh_lock_sock(sk);
-	if (sock_owned_by_user(sk)) {
-		/* Try again later. */
-		__NET_INC_STATS(sock_net(sk), LINUX_MIB_DELAYEDACKLOCKED);
-		sk_reset_timer(sk, &icsk->icsk_delack_timer,
-			       jiffies + TCP_DELACK_MIN);
-		goto out;
-	}
-
-	if (sk->sk_state == DCCP_CLOSED ||
-	    !(icsk->icsk_ack.pending & ICSK_ACK_TIMER))
-		goto out;
-	if (time_after(icsk_delack_timeout(icsk), jiffies)) {
-		sk_reset_timer(sk, &icsk->icsk_delack_timer,
-			       icsk_delack_timeout(icsk));
-		goto out;
-	}
-
-	icsk->icsk_ack.pending &= ~ICSK_ACK_TIMER;
-
-	if (inet_csk_ack_scheduled(sk)) {
-		if (!inet_csk_in_pingpong_mode(sk)) {
-			/* Delayed ACK missed: inflate ATO. */
-			icsk->icsk_ack.ato = min_t(u32, icsk->icsk_ack.ato << 1,
-						   icsk->icsk_rto);
-		} else {
-			/* Delayed ACK missed: leave pingpong mode and
-			 * deflate ATO.
-			 */
-			inet_csk_exit_pingpong_mode(sk);
-			icsk->icsk_ack.ato = TCP_ATO_MIN;
-		}
-		dccp_send_ack(sk);
-		__NET_INC_STATS(sock_net(sk), LINUX_MIB_DELAYEDACKS);
-	}
-out:
-	bh_unlock_sock(sk);
-	sock_put(sk);
-}
-
-/**
- * dccp_write_xmitlet  -  Workhorse for CCID packet dequeueing interface
- * @t: pointer to the tasklet associated with this handler
- *
- * See the comments above %ccid_dequeueing_decision for supported modes.
- */
-static void dccp_write_xmitlet(struct tasklet_struct *t)
-{
-	struct dccp_sock *dp = from_tasklet(dp, t, dccps_xmitlet);
-	struct sock *sk = &dp->dccps_inet_connection.icsk_inet.sk;
-
-	bh_lock_sock(sk);
-	if (sock_owned_by_user(sk))
-		sk_reset_timer(sk, &dccp_sk(sk)->dccps_xmit_timer, jiffies + 1);
-	else
-		dccp_write_xmit(sk);
-	bh_unlock_sock(sk);
-	sock_put(sk);
-}
-
-static void dccp_write_xmit_timer(struct timer_list *t)
-{
-	struct dccp_sock *dp = from_timer(dp, t, dccps_xmit_timer);
-
-	dccp_write_xmitlet(&dp->dccps_xmitlet);
-}
-
-void dccp_init_xmit_timers(struct sock *sk)
-{
-	struct dccp_sock *dp = dccp_sk(sk);
-
-	tasklet_setup(&dp->dccps_xmitlet, dccp_write_xmitlet);
-	timer_setup(&dp->dccps_xmit_timer, dccp_write_xmit_timer, 0);
-	inet_csk_init_xmit_timers(sk, &dccp_write_timer, &dccp_delack_timer,
-				  &dccp_keepalive_timer);
-}
-
-static ktime_t dccp_timestamp_seed;
-/**
- * dccp_timestamp  -  10s of microseconds time source
- * Returns the number of 10s of microseconds since loading DCCP. This is native
- * DCCP time difference format (RFC 4340, sec. 13).
- * Please note: This will wrap around about circa every 11.9 hours.
- */
-u32 dccp_timestamp(void)
-{
-	u64 delta = (u64)ktime_us_delta(ktime_get_real(), dccp_timestamp_seed);
-
-	do_div(delta, 10);
-	return delta;
-}
-EXPORT_SYMBOL_GPL(dccp_timestamp);
-
-void __init dccp_timestamping_init(void)
-{
-	dccp_timestamp_seed = ktime_get_real();
-}