linux.git/include/linux/filter.h, branch v7.2-rc1 Linux kernel source tree Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 7.1-rc5 2026-05-25T13:33:30+00:00 Alexei Starovoitov ast@kernel.org 2026-05-25T13:33:15+00:00 eb19eead368bb0f0ef06a4125d03ed661cd23d36 Cross-merge BPF and other fixes after downstream PR. Signed-off-by: Alexei Starovoitov <ast@kernel.org> 
Cross-merge BPF and other fixes after downstream PR.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
bpf: Prepare architecture JIT support for stack arguments 2026-05-13T16:27:31+00:00 Yonghong Song yonghong.song@linux.dev 2026-05-13T04:50:54+00:00 848d624acf668ae0d71b128f163d1d18d2ac6b90 Add bpf_jit_supports_stack_args() as a weak function defaulting to false. Architectures that implement JIT support for stack arguments override it to return true. Reject BPF functions with more than 5 parameters at verification time if the architecture does not support stack arguments. Acked-by: Puranjay Mohan <puranjay@kernel.org> Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20260513045054.2390945-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org> 
Add bpf_jit_supports_stack_args() as a weak function defaulting to
false. Architectures that implement JIT support for stack arguments
override it to return true.

Reject BPF functions with more than 5 parameters at verification
time if the architecture does not support stack arguments.

Acked-by: Puranjay Mohan <puranjay@kernel.org>
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20260513045054.2390945-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
bpf: Add helper functions for r11-based stack argument insns 2026-05-13T16:27:30+00:00 Yonghong Song yonghong.song@linux.dev 2026-05-13T04:50:05+00:00 78bbe61632f11b1091c03259f92b6559489222ae Add three static inline helper functions — is_stack_arg_ldx(), is_stack_arg_st(), and is_stack_arg_stx() — that identify r11-based (BPF_REG_PARAMS) instructions used for stack argument passing. These helpers encapsulate the detailed encoding requirements (operand size, register, offset alignment and sign) and hide raw BPF_REG_PARAMS usage from the verifier, making call sites more readable and explicit. A later patch ("bpf: Enable r11 based insns") will wire these helpers into the verifier. Until then, check_and_resolve_insns() rejects any r11-based registers. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20260513045005.2383881-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org> 
Add three static inline helper functions — is_stack_arg_ldx(),
is_stack_arg_st(), and is_stack_arg_stx() — that identify r11-based
(BPF_REG_PARAMS) instructions used for stack argument passing. These
helpers encapsulate the detailed encoding requirements (operand size,
register, offset alignment and sign) and hide raw BPF_REG_PARAMS usage
from the verifier, making call sites more readable and explicit.

A later patch ("bpf: Enable r11 based insns") will wire these helpers
into the verifier. Until then, check_and_resolve_insns() rejects any
r11-based registers.

Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20260513045005.2383881-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
bpf: Fix s16 truncation for large bpf-to-bpf call offsets 2026-05-11T15:27:02+00:00 Yazhou Tang tangyazhou518@outlook.com 2026-05-06T09:47:13+00:00 58a8f3e2501dc14b8e00e883d6aaf0600a239da7 Currently, the BPF instruction set allows bpf-to-bpf calls (or internal calls, pseudo calls) to use a 32-bit imm field to represent the relative jump offset. However, when JIT is disabled or falls back to the interpreter, the verifier invokes bpf_patch_call_args() to rewrite the call instruction. In this function, the 32-bit imm is downcast to s16 and stored in the off field. void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth) { stack_depth = max_t(u32, stack_depth, 1); insn->off = (s16) insn->imm; insn->imm = interpreters_args[(round_up(stack_depth, 32) / 32) - 1] - __bpf_call_base_args; insn->code = BPF_JMP | BPF_CALL_ARGS; } If the original imm exceeds the s16 range (i.e., a jump offset greater than 32767 instructions), this downcast silently truncates the offset, resulting in an incorrect call target. Fix this by: 1. In bpf_patch_call_args(), keeping the imm field unchanged and using the off field to store the index of the interpreter function. 2. In ___bpf_prog_run() for the JMP_CALL_ARGS case, retrieving the interpreter function pointer from the interpreters_args array using the off field as the index, and passing the original imm to calculate the last argument of the interpreter function. After these changes, the truncation issue is resolved, and __bpf_call_base_args is also no longer needed and can be removed, which makes the code cleaner. Performance: In ___bpf_prog_run() for the JMP_CALL_ARGS case, changing the retrieval of the interpreter function pointer from pointer addition to direct array indexing improves performance. The possible reason is that the latter has better instruction-level parallelism. See the v5 discussion [1] for more details. [1] https://lore.kernel.org/bpf/f120c3c4-6999-414a-b514-518bb64b4758@zju.edu.cn/ To avoid requiring bpftool changes, keep the new imm/off encoding internal and restore the legacy xlated dump layout in bpf_insn_prepare_dump(). For bpf-to-bpf call offsets that do not fit in s16, export off as 0 instead of a truncated and misleading value. Fixes: 1ea47e01ad6e ("bpf: add support for bpf_call to interpreter") Fixes: 7105e828c087 ("bpf: allow for correlation of maps and helpers in dump") Suggested-by: Xu Kuohai <xukuohai@huaweicloud.com> Suggested-by: Puranjay Mohan <puranjay@kernel.org> Co-developed-by: Tianci Cao <ziye@zju.edu.cn> Signed-off-by: Tianci Cao <ziye@zju.edu.cn> Co-developed-by: Shenghao Yuan <shenghaoyuan0928@163.com> Signed-off-by: Shenghao Yuan <shenghaoyuan0928@163.com> Signed-off-by: Yazhou Tang <tangyazhou518@outlook.com> Link: https://lore.kernel.org/r/20260506094714.419842-3-tangyazhou@zju.edu.cn Signed-off-by: Alexei Starovoitov <ast@kernel.org> 
Currently, the BPF instruction set allows bpf-to-bpf calls (or internal
calls, pseudo calls) to use a 32-bit imm field to represent the relative
jump offset.

However, when JIT is disabled or falls back to the interpreter, the
verifier invokes bpf_patch_call_args() to rewrite the call instruction.
In this function, the 32-bit imm is downcast to s16 and stored in the off
field.

    void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth)
    {
        stack_depth = max_t(u32, stack_depth, 1);
        insn->off = (s16) insn->imm;
        insn->imm = interpreters_args[(round_up(stack_depth, 32) / 32) - 1] -
            __bpf_call_base_args;
        insn->code = BPF_JMP | BPF_CALL_ARGS;
    }

If the original imm exceeds the s16 range (i.e., a jump offset greater
than 32767 instructions), this downcast silently truncates the offset,
resulting in an incorrect call target.

Fix this by:
1. In bpf_patch_call_args(), keeping the imm field unchanged and using the
   off field to store the index of the interpreter function.
2. In ___bpf_prog_run() for the JMP_CALL_ARGS case, retrieving the
   interpreter function pointer from the interpreters_args array using the
   off field as the index, and passing the original imm to calculate the
   last argument of the interpreter function.

After these changes, the truncation issue is resolved, and __bpf_call_base_args
is also no longer needed and can be removed, which makes the code cleaner.

Performance: In ___bpf_prog_run() for the JMP_CALL_ARGS case, changing the
retrieval of the interpreter function pointer from pointer addition to
direct array indexing improves performance. The possible reason is that the
latter has better instruction-level parallelism. See the v5 discussion [1]
for more details.

[1] https://lore.kernel.org/bpf/f120c3c4-6999-414a-b514-518bb64b4758@zju.edu.cn/

To avoid requiring bpftool changes, keep the new imm/off encoding internal
and restore the legacy xlated dump layout in bpf_insn_prepare_dump().
For bpf-to-bpf call offsets that do not fit in s16, export off as 0 instead
of a truncated and misleading value.

Fixes: 1ea47e01ad6e ("bpf: add support for bpf_call to interpreter")
Fixes: 7105e828c087 ("bpf: allow for correlation of maps and helpers in dump")
Suggested-by: Xu Kuohai <xukuohai@huaweicloud.com>
Suggested-by: Puranjay Mohan <puranjay@kernel.org>
Co-developed-by: Tianci Cao <ziye@zju.edu.cn>
Signed-off-by: Tianci Cao <ziye@zju.edu.cn>
Co-developed-by: Shenghao Yuan <shenghaoyuan0928@163.com>
Signed-off-by: Shenghao Yuan <shenghaoyuan0928@163.com>
Signed-off-by: Yazhou Tang <tangyazhou518@outlook.com>
Link: https://lore.kernel.org/r/20260506094714.419842-3-tangyazhou@zju.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
bpf: Introduce bpf register BPF_REG_PARAMS 2026-04-23T14:54:50+00:00 Yonghong Song yonghong.song@linux.dev 2026-04-23T03:35:06+00:00 246ad6e5ee259669692bdb7fb353e8c5d5bba628 Introduce BPF_REG_PARAMS as a dedicated BPF register for stack argument accesses. It occupies the BPF register number 11 (R11), which is used as the base pointer for the stack argument area, keeping it separate from the R10-based (BPF_REG_FP) program stack. The kernel-internal hidden register BPF_REG_AX previously occupied slot 11 (MAX_BPF_REG). With BPF_REG_PARAMS taking that slot, BPF_REG_AX moves to slot 12 and MAX_BPF_EXT_REG increases accordingly. Acked-by: Puranjay Mohan <puranjay@kernel.org> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20260423033506.2542005-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org> 
Introduce BPF_REG_PARAMS as a dedicated BPF register for stack
argument accesses. It occupies the BPF register number 11 (R11),
which is used as the base pointer for the stack argument area,
keeping it separate from the R10-based (BPF_REG_FP) program stack.

The kernel-internal hidden register BPF_REG_AX previously occupied
slot 11 (MAX_BPF_REG). With BPF_REG_PARAMS taking that slot,
BPF_REG_AX moves to slot 12 and MAX_BPF_EXT_REG increases
accordingly.

Acked-by: Puranjay Mohan <puranjay@kernel.org>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20260423033506.2542005-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
bpf: Pass bpf_verifier_env to JIT 2026-04-16T14:03:40+00:00 Xu Kuohai xukuohai@huawei.com 2026-04-16T06:43:38+00:00 d9ef13f72711f2dad64cd4445472ded98fb6c954 Pass bpf_verifier_env to bpf_int_jit_compile(). The follow-up patch will use env->insn_aux_data in the JIT stage to detect indirect jump targets. Since bpf_prog_select_runtime() can be called by cbpf and lib/test_bpf.c code without verifier, introduce helper __bpf_prog_select_runtime() to accept the env parameter. Remove the call to bpf_prog_select_runtime() in bpf_prog_load(), and switch to call __bpf_prog_select_runtime() in the verifier, with env variable passed. The original bpf_prog_select_runtime() is preserved for cbpf and lib/test_bpf.c, where env is NULL. Now all constants blinding calls are moved into the verifier, except the cbpf and lib/test_bpf.c cases. The instructions arrays are adjusted by bpf_patch_insn_data() function for normal cases, so there is no need to call adjust_insn_arrays() in bpf_jit_blind_constants(). Remove it. Reviewed-by: Anton Protopopov <a.s.protopopov@gmail.com> # v8 Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> # v12 Acked-by: Hengqi Chen <hengqi.chen@gmail.com> # v14 Signed-off-by: Xu Kuohai <xukuohai@huawei.com> Link: https://lore.kernel.org/r/20260416064341.151802-3-xukuohai@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> 
Pass bpf_verifier_env to bpf_int_jit_compile(). The follow-up patch will
use env->insn_aux_data in the JIT stage to detect indirect jump targets.

Since bpf_prog_select_runtime() can be called by cbpf and lib/test_bpf.c
code without verifier, introduce helper __bpf_prog_select_runtime()
to accept the env parameter.

Remove the call to bpf_prog_select_runtime() in bpf_prog_load(), and
switch to call __bpf_prog_select_runtime() in the verifier, with env
variable passed. The original bpf_prog_select_runtime() is preserved for
cbpf and lib/test_bpf.c, where env is NULL.

Now all constants blinding calls are moved into the verifier, except
the cbpf and lib/test_bpf.c cases. The instructions arrays are adjusted
by bpf_patch_insn_data() function for normal cases, so there is no need
to call adjust_insn_arrays() in bpf_jit_blind_constants(). Remove it.

Reviewed-by: Anton Protopopov <a.s.protopopov@gmail.com> # v8
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> # v12
Acked-by: Hengqi Chen <hengqi.chen@gmail.com> # v14
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20260416064341.151802-3-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
bpf: Move constants blinding out of arch-specific JITs 2026-04-16T14:03:40+00:00 Xu Kuohai xukuohai@huawei.com 2026-04-16T06:43:37+00:00 d3e945223e0158c85dbde23de4f89493a2a817f6 During the JIT stage, constants blinding rewrites instructions but only rewrites the private instruction copy of the JITed subprog, leaving the global env->prog->insnsi and env->insn_aux_data untouched. This causes a mismatch between subprog instructions and the global state, making it difficult to use the global data in the JIT. To avoid this mismatch, and given that all arch-specific JITs already support constants blinding, move it to the generic verifier code, and switch to rewrite the global env->prog->insnsi with the global states adjusted, as other rewrites in the verifier do. This removes the constants blinding calls in each JIT, which are largely duplicated code across architectures. Since constants blinding is only required for JIT, and there are two JIT entry functions, jit_subprogs() for BPF programs with multiple subprogs and bpf_prog_select_runtime() for programs with no subprogs, move the constants blinding invocation into these two functions. In the verifier path, bpf_patch_insn_data() is used to keep global verifier auxiliary data in sync with patched instructions. A key question is whether this global auxiliary data should be restored on the failure path. Besides instructions, bpf_patch_insn_data() adjusts: - prog->aux->poke_tab - env->insn_array_maps - env->subprog_info - env->insn_aux_data For prog->aux->poke_tab, it is only used by JIT or only meaningful after JIT succeeds, so it does not need to be restored on the failure path. For env->insn_array_maps, when JIT fails, programs using insn arrays are rejected by bpf_insn_array_ready() due to missing JIT addresses. Hence, env->insn_array_maps is only meaningful for JIT and does not need to be restored. For subprog_info, if jit_subprogs fails and CONFIG_BPF_JIT_ALWAYS_ON is not enabled, kernel falls back to interpreter. In this case, env->subprog_info is used to determine subprogram stack depth. So it must be restored on failure. For env->insn_aux_data, it is freed by clear_insn_aux_data() at the end of bpf_check(). Before freeing, clear_insn_aux_data() loops over env->insn_aux_data to release jump targets recorded in it. The loop uses env->prog->len as the array length, but this length no longer matches the actual size of the adjusted env->insn_aux_data array after constants blinding. To address it, a simple approach is to keep insn_aux_data as adjusted after failure, since it will be freed shortly, and record its actual size for the loop in clear_insn_aux_data(). But since clear_insn_aux_data() uses the same index to loop over both env->prog->insnsi and env->insn_aux_data, this approach results in incorrect index for the insnsi array. So an alternative approach is adopted: clone the original env->insn_aux_data before blinding and restore it after failure, similar to env->prog. For classic BPF programs, constants blinding works as before since it is still invoked from bpf_prog_select_runtime(). Reviewed-by: Anton Protopopov <a.s.protopopov@gmail.com> # v8 Reviewed-by: Hari Bathini <hbathini@linux.ibm.com> # powerpc jit Reviewed-by: Pu Lehui <pulehui@huawei.com> # riscv jit Acked-by: Hengqi Chen <hengqi.chen@gmail.com> # loongarch jit Signed-off-by: Xu Kuohai <xukuohai@huawei.com> Link: https://lore.kernel.org/r/20260416064341.151802-2-xukuohai@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> 
During the JIT stage, constants blinding rewrites instructions but only
rewrites the private instruction copy of the JITed subprog, leaving the
global env->prog->insnsi and env->insn_aux_data untouched. This causes a
mismatch between subprog instructions and the global state, making it
difficult to use the global data in the JIT.

To avoid this mismatch, and given that all arch-specific JITs already
support constants blinding, move it to the generic verifier code, and
switch to rewrite the global env->prog->insnsi with the global states
adjusted, as other rewrites in the verifier do.

This removes the constants blinding calls in each JIT, which are largely
duplicated code across architectures.

Since constants blinding is only required for JIT, and there are two
JIT entry functions, jit_subprogs() for BPF programs with multiple
subprogs and bpf_prog_select_runtime() for programs with no subprogs,
move the constants blinding invocation into these two functions.

In the verifier path, bpf_patch_insn_data() is used to keep global
verifier auxiliary data in sync with patched instructions. A key
question is whether this global auxiliary data should be restored
on the failure path.

Besides instructions, bpf_patch_insn_data() adjusts:
  - prog->aux->poke_tab
  - env->insn_array_maps
  - env->subprog_info
  - env->insn_aux_data

For prog->aux->poke_tab, it is only used by JIT or only meaningful after
JIT succeeds, so it does not need to be restored on the failure path.

For env->insn_array_maps, when JIT fails, programs using insn arrays
are rejected by bpf_insn_array_ready() due to missing JIT addresses.
Hence, env->insn_array_maps is only meaningful for JIT and does not need
to be restored.

For subprog_info, if jit_subprogs fails and CONFIG_BPF_JIT_ALWAYS_ON
is not enabled, kernel falls back to interpreter. In this case,
env->subprog_info is used to determine subprogram stack depth. So it
must be restored on failure.

For env->insn_aux_data, it is freed by clear_insn_aux_data() at the
end of bpf_check(). Before freeing, clear_insn_aux_data() loops over
env->insn_aux_data to release jump targets recorded in it. The loop
uses env->prog->len as the array length, but this length no longer
matches the actual size of the adjusted env->insn_aux_data array after
constants blinding.

To address it, a simple approach is to keep insn_aux_data as adjusted
after failure, since it will be freed shortly, and record its actual size
for the loop in clear_insn_aux_data(). But since clear_insn_aux_data()
uses the same index to loop over both env->prog->insnsi and env->insn_aux_data,
this approach results in incorrect index for the insnsi array. So an
alternative approach is adopted: clone the original env->insn_aux_data
before blinding and restore it after failure, similar to env->prog.

For classic BPF programs, constants blinding works as before since it
is still invoked from bpf_prog_select_runtime().

Reviewed-by: Anton Protopopov <a.s.protopopov@gmail.com> # v8
Reviewed-by: Hari Bathini <hbathini@linux.ibm.com> # powerpc jit
Reviewed-by: Pu Lehui <pulehui@huawei.com> # riscv jit
Acked-by: Hengqi Chen <hengqi.chen@gmail.com> # loongarch jit
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20260416064341.151802-2-xukuohai@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Merge tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2026-04-15T01:36:10+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-04-15T01:36:10+00:00 91a4855d6c03e770e42f17c798a36a3c46e63de2 Pull networking updates from Jakub Kicinski: "Core & protocols: - Support HW queue leasing, allowing containers to be granted access to HW queues for zero-copy operations and AF_XDP - Number of code moves to help the compiler with inlining. Avoid output arguments for returning drop reason where possible - Rework drop handling within qdiscs to include more metadata about the reason and dropping qdisc in the tracepoints - Remove the rtnl_lock use from IP Multicast Routing - Pack size information into the Rx Flow Steering table pointer itself. This allows making the table itself a flat array of u32s, thus making the table allocation size a power of two - Report TCP delayed ack timer information via socket diag - Add ip_local_port_step_width sysctl to allow distributing the randomly selected ports more evenly throughout the allowed space - Add support for per-route tunsrc in IPv6 segment routing - Start work of switching sockopt handling to iov_iter - Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid buffer size drifting up - Support MSG_EOR in MPTCP - Add stp_mode attribute to the bridge driver for STP mode selection. This addresses concerns about call_usermodehelper() usage - Remove UDP-Lite support (as announced in 2023) - Remove support for building IPv6 as a module. Remove the now unnecessary function calling indirection Cross-tree stuff: - Move Michael MIC code from generic crypto into wireless, it's considered insecure but some WiFi networks still need it Netfilter: - Switch nft_fib_ipv6 module to no longer need temporary dst_entry object allocations by using fib6_lookup() + RCU. Florian W reports this gets us ~13% higher packet rate - Convert IPVS's global __ip_vs_mutex to per-net service_mutex and switch the service tables to be per-net. Convert some code that walks the service lists to use RCU instead of the service_mutex - Add more opinionated input validation to lower security exposure - Make IPVS hash tables to be per-netns and resizable Wireless: - Finished assoc frame encryption/EPPKE/802.1X-over-auth - Radar detection improvements - Add 6 GHz incumbent signal detection APIs - Multi-link support for FILS, probe response templates and client probing - New APIs and mac80211 support for NAN (Neighbor Aware Networking, aka Wi-Fi Aware) so less work must be in firmware Driver API: - Add numerical ID for devlink instances (to avoid having to create fake bus/device pairs just to have an ID). Support shared devlink instances which span multiple PFs - Add standard counters for reporting pause storm events (implement in mlx5 and fbnic) - Add configuration API for completion writeback buffering (implement in mana) - Support driver-initiated change of RSS context sizes - Support DPLL monitoring input frequency (implement in zl3073x) - Support per-port resources in devlink (implement in mlx5) Misc: - Expand the YAML spec for Netfilter Drivers - Software: - macvlan: support multicast rx for bridge ports with shared source MAC address - team: decouple receive and transmit enablement for IEEE 802.3ad LACP "independent control" - Ethernet high-speed NICs: - nVidia/Mellanox: - support high order pages in zero-copy mode (for payload coalescing) - support multiple packets in a page (for systems with 64kB pages) - Broadcom 25-400GE (bnxt): - implement XDP RSS hash metadata extraction - add software fallback for UDP GSO, lowering the IOMMU cost - Broadcom 800GE (bnge): - add link status and configuration handling - add various HW and SW statistics - Marvell/Cavium: - NPC HW block support for cn20k - Huawei (hinic3): - add mailbox / control queue - add rx VLAN offload - add driver info and link management - Ethernet NICs: - Marvell/Aquantia: - support reading SFP module info on some AQC100 cards - Realtek PCI (r8169): - add support for RTL8125cp - Realtek USB (r8152): - support for the RTL8157 5Gbit chip - add 2500baseT EEE status/configuration support - Ethernet NICs embedded and off-the-shelf IP: - Synopsys (stmmac): - cleanup and reorganize SerDes handling and PCS support - cleanup descriptor handling and per-platform data - cleanup and consolidate MDIO defines and handling - shrink driver memory use for internal structures - improve Tx IRQ coalescing - improve TCP segmentation handling - add support for Spacemit K3 - Cadence (macb): - support PHYs that have inband autoneg disabled with GEM - support IEEE 802.3az EEE - rework usrio capabilities and handling - AMD (xgbe): - improve power management for S0i3 - improve TX resilience for link-down handling - Virtual: - Google cloud vNIC: - support larger ring sizes in DQO-QPL mode - improve HW-GRO handling - support UDP GSO for DQO format - PCIe NTB: - support queue count configuration - Ethernet PHYs: - automatically disable PHY autonomous EEE if MAC is in charge - Broadcom: - add BCM84891/BCM84892 support - Micrel: - support for LAN9645X internal PHY - Realtek: - add RTL8224 pair order support - support PHY LEDs on RTL8211F-VD - support spread spectrum clocking (SSC) - Maxlinear: - add PHY-level statistics via ethtool - Ethernet switches: - Maxlinear (mxl862xx): - support for bridge offloading - support for VLANs - support driver statistics - Bluetooth: - large number of fixes and new device IDs - Mediatek: - support MT6639 (MT7927) - support MT7902 SDIO - WiFi: - Intel (iwlwifi): - UNII-9 and continuing UHR work - MediaTek (mt76): - mt7996/mt7925 MLO fixes/improvements - mt7996 NPU support (HW eth/wifi traffic offload) - Qualcomm (ath12k): - monitor mode support on IPQ5332 - basic hwmon temperature reporting - support IPQ5424 - Realtek: - add USB RX aggregation to improve performance - add USB TX flow control by tracking in-flight URBs - Cellular: - IPA v5.2 support" * tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1561 commits) net: pse-pd: fix kernel-doc function name for pse_control_find_by_id() wireguard: device: use exit_rtnl callback instead of manual rtnl_lock in pre_exit wireguard: allowedips: remove redundant space tools: ynl: add sample for wireguard wireguard: allowedips: Use kfree_rcu() instead of call_rcu() MAINTAINERS: Add netkit selftest files selftests/net: Add additional test coverage in nk_qlease selftests/net: Split netdevsim tests from HW tests in nk_qlease tools/ynl: Make YnlFamily closeable as a context manager net: airoha: Add missing PPE configurations in airoha_ppe_hw_init() net: airoha: Fix VIP configuration for AN7583 SoC net: caif: clear client service pointer on teardown net: strparser: fix skb_head leak in strp_abort_strp() net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete() selftests/bpf: add test for xdp_master_redirect with bond not up net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master net: airoha: Remove PCE_MC_EN_MASK bit in REG_FE_PCE_CFG configuration sctp: disable BH before calling udp_tunnel_xmit_skb() sctp: fix missing encap_port propagation for GSO fragments net: airoha: Rely on net_device pointer in ETS callbacks ... 
Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Support HW queue leasing, allowing containers to be granted access
     to HW queues for zero-copy operations and AF_XDP

   - Number of code moves to help the compiler with inlining. Avoid
     output arguments for returning drop reason where possible

   - Rework drop handling within qdiscs to include more metadata about
     the reason and dropping qdisc in the tracepoints

   - Remove the rtnl_lock use from IP Multicast Routing

   - Pack size information into the Rx Flow Steering table pointer
     itself. This allows making the table itself a flat array of u32s,
     thus making the table allocation size a power of two

   - Report TCP delayed ack timer information via socket diag

   - Add ip_local_port_step_width sysctl to allow distributing the
     randomly selected ports more evenly throughout the allowed space

   - Add support for per-route tunsrc in IPv6 segment routing

   - Start work of switching sockopt handling to iov_iter

   - Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid
     buffer size drifting up

   - Support MSG_EOR in MPTCP

   - Add stp_mode attribute to the bridge driver for STP mode selection.
     This addresses concerns about call_usermodehelper() usage

   - Remove UDP-Lite support (as announced in 2023)

   - Remove support for building IPv6 as a module. Remove the now
     unnecessary function calling indirection

  Cross-tree stuff:

   - Move Michael MIC code from generic crypto into wireless, it's
     considered insecure but some WiFi networks still need it

  Netfilter:

   - Switch nft_fib_ipv6 module to no longer need temporary dst_entry
     object allocations by using fib6_lookup() + RCU.

     Florian W reports this gets us ~13% higher packet rate

   - Convert IPVS's global __ip_vs_mutex to per-net service_mutex and
     switch the service tables to be per-net. Convert some code that
     walks the service lists to use RCU instead of the service_mutex

   - Add more opinionated input validation to lower security exposure

   - Make IPVS hash tables to be per-netns and resizable

  Wireless:

   - Finished assoc frame encryption/EPPKE/802.1X-over-auth

   - Radar detection improvements

   - Add 6 GHz incumbent signal detection APIs

   - Multi-link support for FILS, probe response templates and client
     probing

   - New APIs and mac80211 support for NAN (Neighbor Aware Networking,
     aka Wi-Fi Aware) so less work must be in firmware

  Driver API:

   - Add numerical ID for devlink instances (to avoid having to create
     fake bus/device pairs just to have an ID). Support shared devlink
     instances which span multiple PFs

   - Add standard counters for reporting pause storm events (implement
     in mlx5 and fbnic)

   - Add configuration API for completion writeback buffering (implement
     in mana)

   - Support driver-initiated change of RSS context sizes

   - Support DPLL monitoring input frequency (implement in zl3073x)

   - Support per-port resources in devlink (implement in mlx5)

  Misc:

   - Expand the YAML spec for Netfilter

  Drivers

   - Software:
      - macvlan: support multicast rx for bridge ports with shared
        source MAC address
      - team: decouple receive and transmit enablement for IEEE 802.3ad
        LACP "independent control"

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - support high order pages in zero-copy mode (for payload
           coalescing)
         - support multiple packets in a page (for systems with 64kB
           pages)
      - Broadcom 25-400GE (bnxt):
         - implement XDP RSS hash metadata extraction
         - add software fallback for UDP GSO, lowering the IOMMU cost
      - Broadcom 800GE (bnge):
         - add link status and configuration handling
         - add various HW and SW statistics
      - Marvell/Cavium:
         - NPC HW block support for cn20k
      - Huawei (hinic3):
         - add mailbox / control queue
         - add rx VLAN offload
         - add driver info and link management

   - Ethernet NICs:
      - Marvell/Aquantia:
         - support reading SFP module info on some AQC100 cards
      - Realtek PCI (r8169):
         - add support for RTL8125cp
      - Realtek USB (r8152):
         - support for the RTL8157 5Gbit chip
         - add 2500baseT EEE status/configuration support

   - Ethernet NICs embedded and off-the-shelf IP:
      - Synopsys (stmmac):
         - cleanup and reorganize SerDes handling and PCS support
         - cleanup descriptor handling and per-platform data
         - cleanup and consolidate MDIO defines and handling
         - shrink driver memory use for internal structures
         - improve Tx IRQ coalescing
         - improve TCP segmentation handling
         - add support for Spacemit K3
      - Cadence (macb):
         - support PHYs that have inband autoneg disabled with GEM
         - support IEEE 802.3az EEE
         - rework usrio capabilities and handling
      - AMD (xgbe):
         - improve power management for S0i3
         - improve TX resilience for link-down handling

   - Virtual:
      - Google cloud vNIC:
         - support larger ring sizes in DQO-QPL mode
         - improve HW-GRO handling
         - support UDP GSO for DQO format
      - PCIe NTB:
         - support queue count configuration

   - Ethernet PHYs:
      - automatically disable PHY autonomous EEE if MAC is in charge
      - Broadcom:
         - add BCM84891/BCM84892 support
      - Micrel:
         - support for LAN9645X internal PHY
      - Realtek:
         - add RTL8224 pair order support
         - support PHY LEDs on RTL8211F-VD
         - support spread spectrum clocking (SSC)
      - Maxlinear:
         - add PHY-level statistics via ethtool

   - Ethernet switches:
      - Maxlinear (mxl862xx):
         - support for bridge offloading
         - support for VLANs
         - support driver statistics

   - Bluetooth:
      - large number of fixes and new device IDs
      - Mediatek:
         - support MT6639 (MT7927)
         - support MT7902 SDIO

   - WiFi:
      - Intel (iwlwifi):
         - UNII-9 and continuing UHR work
      - MediaTek (mt76):
         - mt7996/mt7925 MLO fixes/improvements
         - mt7996 NPU support (HW eth/wifi traffic offload)
      - Qualcomm (ath12k):
         - monitor mode support on IPQ5332
         - basic hwmon temperature reporting
         - support IPQ5424
      - Realtek:
         - add USB RX aggregation to improve performance
         - add USB TX flow control by tracking in-flight URBs

   - Cellular:
      - IPA v5.2 support"

* tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1561 commits)
  net: pse-pd: fix kernel-doc function name for pse_control_find_by_id()
  wireguard: device: use exit_rtnl callback instead of manual rtnl_lock in pre_exit
  wireguard: allowedips: remove redundant space
  tools: ynl: add sample for wireguard
  wireguard: allowedips: Use kfree_rcu() instead of call_rcu()
  MAINTAINERS: Add netkit selftest files
  selftests/net: Add additional test coverage in nk_qlease
  selftests/net: Split netdevsim tests from HW tests in nk_qlease
  tools/ynl: Make YnlFamily closeable as a context manager
  net: airoha: Add missing PPE configurations in airoha_ppe_hw_init()
  net: airoha: Fix VIP configuration for AN7583 SoC
  net: caif: clear client service pointer on teardown
  net: strparser: fix skb_head leak in strp_abort_strp()
  net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()
  selftests/bpf: add test for xdp_master_redirect with bond not up
  net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master
  net: airoha: Remove PCE_MC_EN_MASK bit in REG_FE_PCE_CFG configuration
  sctp: disable BH before calling udp_tunnel_xmit_skb()
  sctp: fix missing encap_port propagation for GSO fragments
  net: airoha: Rely on net_device pointer in ETS callbacks
  ...
net: change sk_filter_trim_cap() to return a drop_reason by value 2026-04-12T21:30:25+00:00 Eric Dumazet edumazet@google.com 2026-04-09T14:56:24+00:00 fb37aea2a00e67ef5264ea39371d350a1d19b24f Current return value can be replaced with the drop_reason, reducing kernel bloat: $ scripts/bloat-o-meter -t vmlinux.old vmlinux.new add/remove: 0/2 grow/shrink: 1/11 up/down: 32/-603 (-571) Function old new delta tcp_v6_rcv 3135 3167 +32 unix_dgram_sendmsg 1731 1726 -5 netlink_unicast 957 945 -12 netlink_dump 1372 1359 -13 sk_filter_trim_cap 882 858 -24 tcp_v4_rcv 3143 3111 -32 __pfx_tcp_filter 32 - -32 netlink_broadcast_filtered 1633 1595 -38 sock_queue_rcv_skb_reason 126 76 -50 tun_net_xmit 1127 1074 -53 __sk_receive_skb 690 632 -58 udpv6_queue_rcv_one_skb 935 869 -66 udp_queue_rcv_one_skb 919 853 -66 tcp_filter 154 - -154 Total: Before=29722783, After=29722212, chg -0.00% Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260409145625.2306224-6-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
Current return value can be replaced with the drop_reason,
reducing kernel bloat:

$ scripts/bloat-o-meter -t vmlinux.old vmlinux.new
add/remove: 0/2 grow/shrink: 1/11 up/down: 32/-603 (-571)
Function                                     old     new   delta
tcp_v6_rcv                                  3135    3167     +32
unix_dgram_sendmsg                          1731    1726      -5
netlink_unicast                              957     945     -12
netlink_dump                                1372    1359     -13
sk_filter_trim_cap                           882     858     -24
tcp_v4_rcv                                  3143    3111     -32
__pfx_tcp_filter                              32       -     -32
netlink_broadcast_filtered                  1633    1595     -38
sock_queue_rcv_skb_reason                    126      76     -50
tun_net_xmit                                1127    1074     -53
__sk_receive_skb                             690     632     -58
udpv6_queue_rcv_one_skb                      935     869     -66
udp_queue_rcv_one_skb                        919     853     -66
tcp_filter                                   154       -    -154
Total: Before=29722783, After=29722212, chg -0.00%

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260409145625.2306224-6-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net: change sk_filter_reason() to return the reason by value 2026-04-12T21:30:25+00:00 Eric Dumazet edumazet@google.com 2026-04-09T14:56:22+00:00 c78bcbd51976f123909e5c2baf8cebb699453c2f sk_filter_trim_cap will soon return the reason by value, do the same for sk_filter_reason(). $ scripts/bloat-o-meter -t vmlinux.old vmlinux.new add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-21 (-21) Function old new delta sock_queue_rcv_skb_reason 128 126 -2 tun_net_xmit 1146 1127 -19 Total: Before=29722661, After=29722640, chg -0.00% Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260409145625.2306224-4-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 
sk_filter_trim_cap will soon return the reason by value,
do the same for sk_filter_reason().

$ scripts/bloat-o-meter -t vmlinux.old vmlinux.new
add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-21 (-21)
Function                                     old     new   delta
sock_queue_rcv_skb_reason                    128     126      -2
tun_net_xmit                                1146    1127     -19
Total: Before=29722661, After=29722640, chg -0.00%

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260409145625.2306224-4-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>