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2024-05-14net: change proto and proto_ops accept typeJens Axboe3-6/+12
Rather than pass in flags, error pointer, and whether this is a kernel invocation or not, add a struct proto_accept_arg struct as the argument. This then holds all of these arguments, and prepares accept for being able to pass back more information. No functional changes in this patch. Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-05-14Merge tag 'for-netdev' of ↵Jakub Kicinski1-1/+1
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2024-05-13 We've added 119 non-merge commits during the last 14 day(s) which contain a total of 134 files changed, 9462 insertions(+), 4742 deletions(-). The main changes are: 1) Add BPF JIT support for 32-bit ARCv2 processors, from Shahab Vahedi. 2) Add BPF range computation improvements to the verifier in particular around XOR and OR operators, refactoring of checks for range computation and relaxing MUL range computation so that src_reg can also be an unknown scalar, from Cupertino Miranda. 3) Add support to attach kprobe BPF programs through kprobe_multi link in a session mode, meaning, a BPF program is attached to both function entry and return, the entry program can decide if the return program gets executed and the entry program can share u64 cookie value with return program. Session mode is a common use-case for tetragon and bpftrace, from Jiri Olsa. 4) Fix a potential overflow in libbpf's ring__consume_n() and improve libbpf as well as BPF selftest's struct_ops handling, from Andrii Nakryiko. 5) Improvements to BPF selftests in context of BPF gcc backend, from Jose E. Marchesi & David Faust. 6) Migrate remaining BPF selftest tests from test_sock_addr.c to prog_test- -style in order to retire the old test, run it in BPF CI and additionally expand test coverage, from Jordan Rife. 7) Big batch for BPF selftest refactoring in order to remove duplicate code around common network helpers, from Geliang Tang. 8) Another batch of improvements to BPF selftests to retire obsolete bpf_tcp_helpers.h as everything is available vmlinux.h, from Martin KaFai Lau. 9) Fix BPF map tear-down to not walk the map twice on free when both timer and wq is used, from Benjamin Tissoires. 10) Fix BPF verifier assumptions about socket->sk that it can be non-NULL, from Alexei Starovoitov. 11) Change BTF build scripts to using --btf_features for pahole v1.26+, from Alan Maguire. 12) Small improvements to BPF reusing struct_size() and krealloc_array(), from Andy Shevchenko. 13) Fix s390 JIT to emit a barrier for BPF_FETCH instructions, from Ilya Leoshkevich. 14) Extend TCP ->cong_control() callback in order to feed in ack and flag parameters and allow write-access to tp->snd_cwnd_stamp from BPF program, from Miao Xu. 15) Add support for internal-only per-CPU instructions to inline bpf_get_smp_processor_id() helper call for arm64 and riscv64 BPF JITs, from Puranjay Mohan. 16) Follow-up to remove the redundant ethtool.h from tooling infrastructure, from Tushar Vyavahare. 17) Extend libbpf to support "module:<function>" syntax for tracing programs, from Viktor Malik. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (119 commits) bpf: make list_for_each_entry portable bpf: ignore expected GCC warning in test_global_func10.c bpf: disable strict aliasing in test_global_func9.c selftests/bpf: Free strdup memory in xdp_hw_metadata selftests/bpf: Fix a few tests for GCC related warnings. bpf: avoid gcc overflow warning in test_xdp_vlan.c tools: remove redundant ethtool.h from tooling infra selftests/bpf: Expand ATTACH_REJECT tests selftests/bpf: Expand getsockname and getpeername tests sefltests/bpf: Expand sockaddr hook deny tests selftests/bpf: Expand sockaddr program return value tests selftests/bpf: Retire test_sock_addr.(c|sh) selftests/bpf: Remove redundant sendmsg test cases selftests/bpf: Migrate ATTACH_REJECT test cases selftests/bpf: Migrate expected_attach_type tests selftests/bpf: Migrate wildcard destination rewrite test selftests/bpf: Migrate sendmsg6 v4 mapped address tests selftests/bpf: Migrate sendmsg deny test cases selftests/bpf: Migrate WILDCARD_IP test selftests/bpf: Handle SYSCALL_EPERM and SYSCALL_ENOTSUPP test cases ... ==================== Link: https://lore.kernel.org/r/20240513134114.17575-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-14ax25: Use kernel universal linked list to implement ax25_dev_listDuoming Zhou1-2/+1
The origin ax25_dev_list implements its own single linked list, which is complicated and error-prone. For example, when deleting the node of ax25_dev_list in ax25_dev_device_down(), we have to operate on the head node and other nodes separately. This patch uses kernel universal linked list to replace original ax25_dev_list, which make the operation of ax25_dev_list easier. We should do "dev->ax25_ptr = ax25_dev;" and "dev->ax25_ptr = NULL;" while holding the spinlock, otherwise the ax25_dev_device_up() and ax25_dev_device_down() could race. Suggested-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Duoming Zhou <duoming@zju.edu.cn> Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://lore.kernel.org/r/85bba3af651ca0e1a519da8d0d715b949891171c.1715247018.git.duoming@zju.edu.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-14netdev: Add queue stats for TX stop and wakeDaniel Jurgens1-0/+3
TX queue stop and wake are counted by some drivers. Support reporting these via netdev-genl queue stats. Signed-off-by: Daniel Jurgens <danielj@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Reviewed-by: Jason Xing <kerneljasonxing@gmail.com> Link: https://lore.kernel.org/r/20240510201927.1821109-2-danielj@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-14netlabel: fix RCU annotation for IPv4 options on socket creationDavide Caratti2-4/+14
Xiumei reports the following splat when netlabel and TCP socket are used: ============================= WARNING: suspicious RCU usage 6.9.0-rc2+ #637 Not tainted ----------------------------- net/ipv4/cipso_ipv4.c:1880 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by ncat/23333: #0: ffffffff906030c0 (rcu_read_lock){....}-{1:2}, at: netlbl_sock_setattr+0x25/0x1b0 stack backtrace: CPU: 11 PID: 23333 Comm: ncat Kdump: loaded Not tainted 6.9.0-rc2+ #637 Hardware name: Supermicro SYS-6027R-72RF/X9DRH-7TF/7F/iTF/iF, BIOS 3.0 07/26/2013 Call Trace: <TASK> dump_stack_lvl+0xa9/0xc0 lockdep_rcu_suspicious+0x117/0x190 cipso_v4_sock_setattr+0x1ab/0x1b0 netlbl_sock_setattr+0x13e/0x1b0 selinux_netlbl_socket_post_create+0x3f/0x80 selinux_socket_post_create+0x1a0/0x460 security_socket_post_create+0x42/0x60 __sock_create+0x342/0x3a0 __sys_socket_create.part.22+0x42/0x70 __sys_socket+0x37/0xb0 __x64_sys_socket+0x16/0x20 do_syscall_64+0x96/0x180 ? do_user_addr_fault+0x68d/0xa30 ? exc_page_fault+0x171/0x280 ? asm_exc_page_fault+0x22/0x30 entry_SYSCALL_64_after_hwframe+0x71/0x79 RIP: 0033:0x7fbc0ca3fc1b Code: 73 01 c3 48 8b 0d 05 f2 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d d5 f1 1b 00 f7 d8 64 89 01 48 RSP: 002b:00007fff18635208 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fbc0ca3fc1b RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 000055d24f80f8a0 R08: 0000000000000003 R09: 0000000000000001 R10: 0000000000020000 R11: 0000000000000246 R12: 000055d24f80f8a0 R13: 0000000000000000 R14: 000055d24f80fb88 R15: 0000000000000000 </TASK> The current implementation of cipso_v4_sock_setattr() replaces IP options under the assumption that the caller holds the socket lock; however, such assumption is not true, nor needed, in selinux_socket_post_create() hook. Let all callers of cipso_v4_sock_setattr() specify the "socket lock held" condition, except selinux_socket_post_create() _ where such condition can safely be set as true even without holding the socket lock. Fixes: f6d8bd051c39 ("inet: add RCU protection to inet->opt") Reported-by: Xiumei Mu <xmu@redhat.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Acked-by: Paul Moore <paul@paul-moore.com> Link: https://lore.kernel.org/r/f4260d000a3a55b9e8b6a3b4e3fffc7da9f82d41.1715359817.git.dcaratti@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-14net: gro: move L3 flush checks to tcp_gro_receive and udp_gro_receive_segmentRichard Gobert1-8/+68
{inet,ipv6}_gro_receive functions perform flush checks (ttl, flags, iph->id, ...) against all packets in a loop. These flush checks are used in all merging UDP and TCP flows. These checks need to be done only once and only against the found p skb, since they only affect flush and not same_flow. This patch leverages correct network header offsets from the cb for both outer and inner network headers - allowing these checks to be done only once, in tcp_gro_receive and udp_gro_receive_segment. As a result, NAPI_GRO_CB(p)->flush is not used at all. In addition, flush_id checks are more declarative and contained in inet_gro_flush, thus removing the need for flush_id in napi_gro_cb. This results in less parsing code for non-loop flush tests for TCP and UDP flows. To make sure results are not within noise range - I've made netfilter drop all TCP packets, and measured CPU performance in GRO (in this case GRO is responsible for about 50% of the CPU utilization). perf top while replaying 64 parallel IP/TCP streams merging in GRO: (gro_receive_network_flush is compiled inline to tcp_gro_receive) net-next: 6.94% [kernel] [k] inet_gro_receive 3.02% [kernel] [k] tcp_gro_receive patch applied: 4.27% [kernel] [k] tcp_gro_receive 4.22% [kernel] [k] inet_gro_receive perf top while replaying 64 parallel IP/IP/TCP streams merging in GRO (same results for any encapsulation, in this case inet_gro_receive is top offender in net-next) net-next: 10.09% [kernel] [k] inet_gro_receive 2.08% [kernel] [k] tcp_gro_receive patch applied: 6.97% [kernel] [k] inet_gro_receive 3.68% [kernel] [k] tcp_gro_receive Signed-off-by: Richard Gobert <richardbgobert@gmail.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://lore.kernel.org/r/20240509190819.2985-3-richardbgobert@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-14net: gro: use cb instead of skb->network_headerRichard Gobert1-2/+7
This patch converts references of skb->network_header to napi_gro_cb's network_offset and inner_network_offset. Signed-off-by: Richard Gobert <richardbgobert@gmail.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://lore.kernel.org/r/20240509190819.2985-2-richardbgobert@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-13Merge tag 'nf-next-24-05-12' of ↵Jakub Kicinski1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next Pablo Neira Ayuso says: ==================== Netfilter updates for net-next The following patchset contains Netfilter updates for net-next: Patch #1 skips transaction if object type provides no .update interface. Patch #2 skips NETDEV_CHANGENAME which is unused. Patch #3 enables conntrack to handle Multicast Router Advertisements and Multicast Router Solicitations from the Multicast Router Discovery protocol (RFC4286) as untracked opposed to invalid packets. From Linus Luessing. Patch #4 updates DCCP conntracker to mark invalid as invalid, instead of dropping them, from Jason Xing. Patch #5 uses NF_DROP instead of -NF_DROP since NF_DROP is 0, also from Jason. Patch #6 removes reference in netfilter's sysctl documentation on pickup entries which were already removed by Florian Westphal. Patch #7 removes check for IPS_OFFLOAD flag to disable early drop which allows to evict entries from the conntrack table, also from Florian. Patches #8 to #16 updates nf_tables pipapo set backend to allocate the datastructure copy on-demand from preparation phase, to better deal with OOM situations where .commit step is too late to fail. Series from Florian Westphal. Patch #17 adds a selftest with packetdrill to cover conntrack TCP state transitions, also from Florian. Patch #18 use GFP_KERNEL to clone elements from control plane to avoid quick atomic reserves exhaustion with large sets, reporter refers to million entries magnitude. * tag 'nf-next-24-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next: netfilter: nf_tables: allow clone callbacks to sleep selftests: netfilter: add packetdrill based conntrack tests netfilter: nft_set_pipapo: remove dirty flag netfilter: nft_set_pipapo: move cloning of match info to insert/removal path netfilter: nft_set_pipapo: prepare pipapo_get helper for on-demand clone netfilter: nft_set_pipapo: merge deactivate helper into caller netfilter: nft_set_pipapo: prepare walk function for on-demand clone netfilter: nft_set_pipapo: prepare destroy function for on-demand clone netfilter: nft_set_pipapo: make pipapo_clone helper return NULL netfilter: nft_set_pipapo: move prove_locking helper around netfilter: conntrack: remove flowtable early-drop test netfilter: conntrack: documentation: remove reference to non-existent sysctl netfilter: use NF_DROP instead of -NF_DROP netfilter: conntrack: dccp: try not to drop skb in conntrack netfilter: conntrack: fix ct-state for ICMPv6 Multicast Router Discovery netfilter: nf_tables: remove NETDEV_CHANGENAME from netdev chain event handler netfilter: nf_tables: skip transaction if update object is not implemented ==================== Link: https://lore.kernel.org/r/20240512161436.168973-1-pablo@netfilter.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-13Merge tag 'vfs-6.10.rw' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfsLinus Torvalds1-8/+1
Pull vfs rw iterator updates from Christian Brauner: "The core fs signalfd, userfaultfd, and timerfd subsystems did still use f_op->read() instead of f_op->read_iter(). Convert them over since we should aim to get rid of f_op->read() at some point. Aside from that io_uring and others want to mark files as FMODE_NOWAIT so it can make use of per-IO nonblocking hints to enable more efficient IO. Converting those users to f_op->read_iter() allows them to be marked with FMODE_NOWAIT" * tag 'vfs-6.10.rw' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: signalfd: convert to ->read_iter() userfaultfd: convert to ->read_iter() timerfd: convert to ->read_iter() new helper: copy_to_iter_full()
2024-05-13Merge tag 'vfs-6.10.netfs' of ↵Linus Torvalds1-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull netfs updates from Christian Brauner: "This reworks the netfslib writeback implementation so that pages read from the cache are written to the cache through ->writepages(), thereby allowing the fscache page flag to be retired. The reworking also: - builds on top of the new writeback_iter() infrastructure - makes it possible to use vectored write RPCs as discontiguous streams of pages can be accommodated - makes it easier to do simultaneous content crypto and stream division - provides support for retrying writes and re-dividing a stream - replaces the ->launder_folio() op, so that ->writepages() is used instead - uses mempools to allocate the netfs_io_request and netfs_io_subrequest structs to avoid allocation failure in the writeback path Some code that uses the fscache page flag is retained for compatibility purposes with nfs and ceph. The code is switched to using the synonymous private_2 label instead and marked with deprecation comments. The merge commit contains additional details on the new algorithm that I've left out of here as it would probably be excessively detailed. On top of the netfslib infrastructure this contains the work to convert cifs over to netfslib" * tag 'vfs-6.10.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (38 commits) cifs: Enable large folio support cifs: Remove some code that's no longer used, part 3 cifs: Remove some code that's no longer used, part 2 cifs: Remove some code that's no longer used, part 1 cifs: Cut over to using netfslib cifs: Implement netfslib hooks cifs: Make add_credits_and_wake_if() clear deducted credits cifs: Add mempools for cifs_io_request and cifs_io_subrequest structs cifs: Set zero_point in the copy_file_range() and remap_file_range() cifs: Move cifs_loose_read_iter() and cifs_file_write_iter() to file.c cifs: Replace the writedata replay bool with a netfs sreq flag cifs: Make wait_mtu_credits take size_t args cifs: Use more fields from netfs_io_subrequest cifs: Replace cifs_writedata with a wrapper around netfs_io_subrequest cifs: Replace cifs_readdata with a wrapper around netfs_io_subrequest cifs: Use alternative invalidation to using launder_folio netfs, afs: Use writeback retry to deal with alternate keys netfs: Miscellaneous tidy ups netfs: Remove the old writeback code netfs: Cut over to using new writeback code ...
2024-05-11af_unix: Add dead flag to struct scm_fp_list.Kuniyuki Iwashima1-0/+1
Commit 1af2dface5d2 ("af_unix: Don't access successor in unix_del_edges() during GC.") fixed use-after-free by avoid accessing edge->successor while GC is in progress. However, there could be a small race window where another process could call unix_del_edges() while gc_in_progress is true and __skb_queue_purge() is on the way. So, we need another marker for struct scm_fp_list which indicates if the skb is garbage-collected. This patch adds dead flag in struct scm_fp_list and set it true before calling __skb_queue_purge(). Fixes: 1af2dface5d2 ("af_unix: Don't access successor in unix_del_edges() during GC.") Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Link: https://lore.kernel.org/r/20240508171150.50601-1-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-10Merge tag 'gtp-24-05-07' of ↵David S. Miller1-0/+5
git://git.kernel.org/pub/scm/linux/kernel/git/pablo/gtp Pablo neira Ayuso says: ==================== gtp pull request 24-05-07 This v3 includes: - fix for clang uninitialized variable per Jakub. - address Smatch and Coccinelle reports per Simon - remove inline in new IPv6 support per Simon - fix memleaks in netlink control plane per Simon -o- The following patchset contains IPv6 GTP driver support for net-next, this also includes IPv6 over IPv4 and vice-versa: Patch #1 removes a unnecessary stack variable initialization in the socket routine. Patch #2 deals with GTP extension headers. This variable length extension header to decapsulate packets accordingly. Otherwise, packets are dropped when these extension headers are present which breaks interoperation with other non-Linux based GTP implementations. Patch #3 prepares for IPv6 support by moving IPv4 specific fields in PDP context objects to a union. Patch #4 adds IPv6 support while retaining backward compatibility. Three new attributes allows to declare an IPv6 GTP tunnel GTPA_FAMILY, GTPA_PEER_ADDR6 and GTPA_MS_ADDR6 as well as IFLA_GTP_LOCAL6 to declare the IPv6 GTP UDP socket. Up to this patch, only IPv6 outer in IPv6 inner is supported. Patch #5 uses IPv6 address /64 prefix for UE/MS in the inner headers. Unlike IPv4, which provides a 1:1 mapping between UE/MS, IPv6 tunnel encapsulates traffic for /64 address as specified by 3GPP TS. Patch has been split from Patch #4 to highlight this behaviour. Patch #6 passes up IPv6 link-local traffic, such as IPv6 SLAAC, for handling to userspace so they are handled as control packets. Patch #7 prepares to allow for GTP IPv4 over IPv6 and vice-versa by moving IP specific debugging out of the function to build IPv4 and IPv6 GTP packets. Patch #8 generalizes TOS/DSCP handling following similar approach as in the existing iptunnel infrastructure. Patch #9 adds a helper function to build an IPv4 GTP packet in the outer header. Patch #10 adds a helper function to build an IPv6 GTP packet in the outer header. Patch #11 adds support for GTP IPv4-over-IPv6 and vice-versa. Patch #12 allows to use the same TID/TEID (tunnel identifier) for inner IPv4 and IPv6 packets for better UE/MS dual stack integration. This series integrates with the osmocom.org project CI and TTCN-3 test infrastructure (Oliver Smith) as well as the userspace libgtpnl library. Thanks to Harald Welte, Oliver Smith and Pau Espin for reviewing and providing feedback through the osmocom.org redmine platform to make this happen. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2024-05-10netfilter: nf_tables: allow clone callbacks to sleepFlorian Westphal1-2/+2
Sven Auhagen reports transaction failures with following error: ./main.nft:13:1-26: Error: Could not process rule: Cannot allocate memory percpu: allocation failed, size=16 align=8 atomic=1, atomic alloc failed, no space left This points to failing pcpu allocation with GFP_ATOMIC flag. However, transactions happen from user context and are allowed to sleep. One case where we can call into percpu allocator with GFP_ATOMIC is nft_counter expression. Normally this happens from control plane, so this could use GFP_KERNEL instead. But one use case, element insertion from packet path, needs to use GFP_ATOMIC allocations (nft_dynset expression). At this time, .clone callbacks always use GFP_ATOMIC for this reason. Add gfp_t argument to the .clone function and pass GFP_KERNEL or GFP_ATOMIC flag depending on context, this allows all clone memory allocations to sleep for the normal (transaction) case. Cc: Sven Auhagen <sven.auhagen@voleatech.de> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2024-05-10tcp: get rid of twsk_unique()Eric Dumazet1-9/+0
DCCP is going away soon, and had no twsk_unique() method. We can directly call tcp_twsk_unique() for TCP sockets. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://lore.kernel.org/r/20240507164140.940547-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski1-0/+3
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c 35d92abfbad8 ("net: hns3: fix kernel crash when devlink reload during initialization") 2a1a1a7b5fd7 ("net: hns3: add command queue trace for hns3") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-09Merge tag 'wireless-next-2024-05-08' of ↵Jakub Kicinski2-11/+24
git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next Kalle Valo says: ==================== wireless-next patches for v6.10 The third, and most likely the last, "new features" pull request for v6.10 with changes both in stack and in drivers. In ath12k and rtw89 we disabled Wireless Extensions just like with iwlwifi earlier. Wi-Fi 7 devices will not support Wireless Extensions (WEXT) anymore so if someone is still using the legacy WEXT interface it's time to switch to nl80211 now! We merged wireless into wireless-next as we decided not to send a wireless pull request to v6.9 this late in the cycle. Also an immutable branch with MHI subsystem was merged to get ath11k and ath12k hibernation working. Major changes: mac80211/cfg80211 * handle color change per link mt76 * mt7921 LED control * mt7925 EHT radiotap support * mt7920e PCI support ath12k * debugfs support * dfs_simulate_radar debugfs file * disable Wireless Extensions * suspend and hibernation support * ACPI support * refactoring in preparation of multi-link support ath11k * support hibernation (required changes in qrtr and MHI subsystems) * ieee80211-freq-limit Device Tree property support ath10k * firmware-name Device Tree property support rtw89 * complete features of new WiFi 7 chip 8922AE including BT-coexistence and WoWLAN * use BIOS ACPI settings to set TX power and channels * disable Wireless Extensios on Wi-Fi 7 devices iwlwifi * block_esr debugfs file * support again firmware API 90 (was reverted earlier) * provide channel survey information for Automatic Channel Selection (ACS) * tag 'wireless-next-2024-05-08' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (214 commits) wifi: mwl8k: initialize cmd->addr[] properly wifi: iwlwifi: Ensure prph_mac dump includes all addresses wifi: iwlwifi: mvm: don't request statistics in restart wifi: iwlwifi: mvm: exit EMLSR if secondary link is not used wifi: iwlwifi: mvm: add beacon template version 14 wifi: iwlwifi: mvm: align UATS naming with firmware wifi: iwlwifi: Force SCU_ACTIVE for specific platforms wifi: iwlwifi: mvm: record and return channel survey information wifi: iwlwifi: mvm: add the firmware API for channel survey wifi: iwlwifi: mvm: Fix race in scan completion wifi: iwlwifi: mvm: Add a print for invalid link pair due to bandwidth wifi: iwlwifi: mvm: add a debugfs for reading EMLSR blocking reasons wifi: iwlwifi: mvm: Add active EMLSR blocking reasons prints wifi: iwlwifi: bump FW API to 90 for BZ/SC devices wifi: iwlwifi: mvm: fix primary link setting wifi: iwlwifi: mvm: use already determined cmd_id wifi: iwlwifi: mvm: don't reset link selection during restart wifi: iwlwifi: Print EMLSR states name wifi: iwlwifi: mvm: Block EMLSR when a p2p/softAP vif is active wifi: iwlwifi: mvm: fix typo in debug print ... ==================== Link: https://lore.kernel.org/r/20240508120726.85A10C113CC@smtp.kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-09net: dst_cache: annotate data-races around dst_cache->reset_tsEric Dumazet1-1/+1
dst_cache->reset_ts is read or written locklessly, add READ_ONCE() and WRITE_ONCE() annotations. Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Link: https://lore.kernel.org/r/20240507132000.614591-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-08net: dsa: add support switches global DSCP priority mappingOleksij Rempel1-0/+9
Some switches like Microchip KSZ variants do not support per port DSCP priority configuration. Instead there is a global DSCP mapping table. To handle it, we will accept set/del request to any of user ports to make global configuration and update dcb app entries for all other ports. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-05-08net: add IEEE 802.1q specific helpersOleksij Rempel2-0/+133
IEEE 802.1q specification provides recommendation and examples which can be used as good default values for different drivers. This patch implements mapping examples documented in IEEE 802.1Q-2022 in Annex I "I.3 Traffic type to traffic class mapping" and IETF DSCP naming and mapping DSCP to Traffic Type inspired by RFC8325. This helpers will be used in followup patches for dsa/microchip DCB implementation. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-05-08net: dsa: add support for DCB get/set apptrust configurationOleksij Rempel1-0/+4
Add DCB support to get/set trust configuration for different packet priority information sources. Some switch allow to chose different source of packet priority classification. For example on KSZ switches it is possible to configure VLAN PCP and/or DSCP sources. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-05-08xsk: use generic DMA sync shortcut instead of a custom oneAlexander Lobakin2-15/+6
XSk infra's been using its own DMA sync shortcut to try avoiding redundant function calls. Now that there is a generic one, remove the custom implementation and rely on the generic helpers. xsk_buff_dma_sync_for_cpu() doesn't need the second argument anymore, remove it. Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2024-05-07page_pool: don't use driver-set flags field directlyAlexander Lobakin1-3/+10
page_pool::p is driver-defined params, copied directly from the structure passed to page_pool_create(). The structure isn't meant to be modified by the Page Pool core code and this even might look confusing[0][1]. In order to be able to alter some flags, let's define our own, internal fields the same way as the already existing one (::has_init_callback). They are defined as bits in the driver-set params, leave them so here as well, to not waste byte-per-bit or so. Almost 30 bits are still free for future extensions. We could've defined only new flags here or only the ones we may need to alter, but checking some flags in one place while others in another doesn't sound convenient or intuitive. ::flags passed by the driver can now go to the "slow" PP params. Suggested-by: Jakub Kicinski <kuba@kernel.org> Link[0]: https://lore.kernel.org/netdev/20230703133207.4f0c54ce@kernel.org Suggested-by: Alexander Duyck <alexanderduyck@fb.com> Link[1]: https://lore.kernel.org/netdev/CAKgT0UfZCGnWgOH96E4GV3ZP6LLbROHM7SHE8NKwq+exX+Gk_Q@mail.gmail.com Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2024-05-07page_pool: make sure frag API fields don't span between cachelinesAlexander Lobakin1-1/+11
After commit 5027ec19f104 ("net: page_pool: split the page_pool_params into fast and slow") that made &page_pool contain only "hot" params at the start, cacheline boundary chops frag API fields group in the middle again. To not bother with this each time fast params get expanded or shrunk, let's just align them to `4 * sizeof(long)`, the closest upper pow-2 to their actual size (2 longs + 1 int). This ensures 16-byte alignment for the 32-bit architectures and 32-byte alignment for the 64-bit ones, excluding unnecessary false-sharing. ::page_state_hold_cnt is used quite intensively on hotpath no matter if frag API is used, so move it to the newly created hole in the first cacheline. Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2024-05-07Merge tag 'ipsec-next-2024-05-03' of ↵Jakub Kicinski1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next Steffen Klassert says: ==================== pull request (net-next): ipsec-next 2024-05-03 1) Remove Obsolete UDP_ENCAP_ESPINUDP_NON_IKE Support. This was defined by an early version of an IETF draft that did not make it to a standard. 2) Introduce direction attribute for xfrm states. xfrm states have a direction, a stsate can be used either for input or output packet processing. Add a direction to xfrm states to make it clear for what a xfrm state is used. * tag 'ipsec-next-2024-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next: xfrm: Restrict SA direction attribute to specific netlink message types xfrm: Add dir validation to "in" data path lookup xfrm: Add dir validation to "out" data path lookup xfrm: Add Direction to the SA in or out udpencap: Remove Obsolete UDP_ENCAP_ESPINUDP_NON_IKE Support ==================== Link: https://lore.kernel.org/r/20240503082732.2835810-1-steffen.klassert@secunet.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-07gtp: properly parse extension headersPablo Neira Ayuso1-0/+5
Currently GTP packets are dropped if the next extension field is set to non-zero value, but this are valid GTP packets. TS 29.281 provides a longer header format, which is defined as struct gtp1_header_long. Such long header format is used if any of the S, PN, E flags is set. This long header is 4 bytes longer than struct gtp1_header, plus variable length (optional) extension headers. The next extension header field is zero is no extension header is provided. The extension header is composed of a length field which includes total number of 4 byte words including the extension header itself (1 byte), payload (variable length) and next type (1 byte). The extension header size and its payload is aligned to 4 bytes. A GTP packet might come with a chain extensions headers, which makes it slightly cumbersome to parse because the extension next header field comes at the end of the extension header, and there is a need to check if this field becomes zero to stop the extension header parser. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2024-05-06net: create tcp_gro_header_pull helper functionFelix Fietkau1-1/+3
Pull the code out of tcp_gro_receive in order to access the tcp header from tcp4/6_gro_receive. Acked-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-05-06net: create tcp_gro_lookup helper functionFelix Fietkau1-0/+1
This pulls the flow port matching out of tcp_gro_receive, so that it can be reused for the next change, which adds the TCP fraglist GRO heuristic. Acked-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-05-06net: move skb_gro_receive_list from udp to coreFelix Fietkau1-0/+1
This helper function will be used for TCP fraglist GRO support Acked-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-05-05queue_api: define queue apiMina Almasry1-0/+31
This API enables the net stack to reset the queues used for devmem TCP. Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Shailend Chand <shailend@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-05-04Merge tag 'ipsec-2024-05-02' of ↵Jakub Kicinski1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec Steffen Klassert says: ==================== pull request (net): ipsec 2024-05-02 1) Fix an error pointer dereference in xfrm_in_fwd_icmp. From Antony Antony. 2) Preserve vlan tags for ESP transport mode software GRO. From Paul Davey. 3) Fix a spelling mistake in an uapi xfrm.h comment. From Anotny Antony. * tag 'ipsec-2024-05-02' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec: xfrm: Correct spelling mistake in xfrm.h comment xfrm: Preserve vlan tags for transport mode software GRO xfrm: fix possible derferencing in error path ==================== Link: https://lore.kernel.org/r/20240502084838.2269355-1-steffen.klassert@secunet.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-03ax.25: x.25: Remove the now superfluous sentinel elements from ctl_table arrayJoel Granados1-0/+2
This commit comes at the tail end of a greater effort to remove the empty elements at the end of the ctl_table arrays (sentinels) which will reduce the overall build time size of the kernel and run time memory bloat by ~64 bytes per sentinel (further information Link : https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/) Avoid a buffer overflow when traversing the ctl_table by ensuring that AX25_MAX_VALUES is the same as the size of ax25_param_table. This is done with a BUILD_BUG_ON where ax25_param_table is defined and a CONFIG_AX25_DAMA_SLAVE guard in the unnamed enum definition as well as in the ax25_dev_device_up and ax25_ds_set_timer functions. The overflow happened when the sentinel was removed from ax25_param_table. The sentinel's data element was changed when CONFIG_AX25_DAMA_SLAVE was undefined. This had no adverse effects as it still stopped on the sentinel's null procname but needed to be addressed once the sentinel was removed. Signed-off-by: Joel Granados <j.granados@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-05-03wifi: mac80211: handle color change per linkAditya Kumar Singh1-2/+4
In order to support color change with MLO, handle the link ID now passed from cfg80211, adjust the code to do everything per link and call the notifications to cfg80211 correctly. Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com> Link: https://msgid.link/20240422053412.2024075-4-quic_adisi@quicinc.com Link: https://msgid.link/20240422053412.2024075-5-quic_adisi@quicinc.com Link: https://msgid.link/20240422053412.2024075-6-quic_adisi@quicinc.com Link: https://msgid.link/20240422053412.2024075-7-quic_adisi@quicinc.com [squash, move API call updates to this patch] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-05-03wifi: cfg80211: handle color change per linkAditya Kumar Singh1-9/+20
Currently, during color change, no link id information is passed down. In order to support color change during Multi Link Operation, it is required to pass link id as well. Additionally, update notification APIs to allow drivers/mac80211 to pass the link ID. Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com> Link: https://msgid.link/20240422053412.2024075-2-quic_adisi@quicinc.com Link: https://msgid.link/20240422053412.2024075-3-quic_adisi@quicinc.com [squash, actually only pass 0 from mac80211] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-05-03tcp: Add new args for cong_control in tcp_congestion_opsMiao Xu1-1/+1
This patch adds two new arguments for cong_control of struct tcp_congestion_ops: - ack - flag These two arguments are inherited from the caller tcp_cong_control in tcp_intput.c. One use case of them is to update cwnd and pacing rate inside cong_control based on the info they provide. For example, the flag can be used to decide if it is the right time to raise or reduce a sender's cwnd. Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Miao Xu <miaxu@meta.com> Link: https://lore.kernel.org/r/20240502042318.801932-2-miaxu@meta.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2024-05-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski1-0/+9
Cross-merge networking fixes after downstream PR. Conflicts: include/linux/filter.h kernel/bpf/core.c 66e13b615a0c ("bpf: verifier: prevent userspace memory access") d503a04f8bc0 ("bpf: Add support for certain atomics in bpf_arena to x86 JIT") https://lore.kernel.org/all/20240429114939.210328b0@canb.auug.org.au/ No adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-02net: gro: fix udp bad offset in socket lookup by adding ↵Richard Gobert1-0/+9
{inner_}network_offset to napi_gro_cb Commits a602456 ("udp: Add GRO functions to UDP socket") and 57c67ff ("udp: additional GRO support") introduce incorrect usage of {ip,ipv6}_hdr in the complete phase of gro. The functions always return skb->network_header, which in the case of encapsulated packets at the gro complete phase, is always set to the innermost L3 of the packet. That means that calling {ip,ipv6}_hdr for skbs which completed the GRO receive phase (both in gro_list and *_gro_complete) when parsing an encapsulated packet's _outer_ L3/L4 may return an unexpected value. This incorrect usage leads to a bug in GRO's UDP socket lookup. udp{4,6}_lib_lookup_skb functions use ip_hdr/ipv6_hdr respectively. These *_hdr functions return network_header which will point to the innermost L3, resulting in the wrong offset being used in __udp{4,6}_lib_lookup with encapsulated packets. This patch adds network_offset and inner_network_offset to napi_gro_cb, and makes sure both are set correctly. To fix the issue, network_offsets union is used inside napi_gro_cb, in which both the outer and the inner network offsets are saved. Reproduction example: Endpoint configuration example (fou + local address bind) # ip fou add port 6666 ipproto 4 # ip link add name tun1 type ipip remote 2.2.2.1 local 2.2.2.2 encap fou encap-dport 5555 encap-sport 6666 mode ipip # ip link set tun1 up # ip a add 1.1.1.2/24 dev tun1 Netperf TCP_STREAM result on net-next before patch is applied: net-next main, GRO enabled: $ netperf -H 1.1.1.2 -t TCP_STREAM -l 5 Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 131072 16384 16384 5.28 2.37 net-next main, GRO disabled: $ netperf -H 1.1.1.2 -t TCP_STREAM -l 5 Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 131072 16384 16384 5.01 2745.06 patch applied, GRO enabled: $ netperf -H 1.1.1.2 -t TCP_STREAM -l 5 Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 131072 16384 16384 5.01 2877.38 Fixes: a6024562ffd7 ("udp: Add GRO functions to UDP socket") Signed-off-by: Richard Gobert <richardbgobert@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-05-02net: dsa: Remove adjust_link pathsFlorian Fainelli1-7/+0
Now that we no longer any drivers using PHYLIB's adjust_link callback, remove all paths that made use of adjust_link as well as the associated functions. Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/20240430164816.2400606-3-florian.fainelli@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-02net: dsa: Remove fixed_link_update memberFlorian Fainelli1-4/+0
We have not had a switch driver use a fixed_link_update callback since 58d56fcc3964f9be0a9ca42fd126bcd9dc7afc90 ("net: dsa: bcm_sf2: Get rid of PHYLIB functions") remove this callback. Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/20240430164816.2400606-2-florian.fainelli@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01netfs, 9p: Implement helpers for new write codeDavid Howells1-0/+2
Implement the helpers for the new write code in 9p. There's now an optional ->prepare_write() that allows the filesystem to set the parameters for the next write, such as maximum size and maximum segment count, and an ->issue_write() that is called to initiate an (asynchronous) write operation. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: Eric Van Hensbergen <ericvh@kernel.org> cc: Latchesar Ionkov <lucho@ionkov.net> cc: Dominique Martinet <asmadeus@codewreck.org> cc: Christian Schoenebeck <linux_oss@crudebyte.com> cc: v9fs@lists.linux.dev cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org
2024-05-01xfrm: Add Direction to the SA in or outAntony Antony1-0/+1
This patch introduces the 'dir' attribute, 'in' or 'out', to the xfrm_state, SA, enhancing usability by delineating the scope of values based on direction. An input SA will restrict values pertinent to input, effectively segregating them from output-related values. And an output SA will restrict attributes for output. This change aims to streamline the configuration process and improve the overall consistency of SA attributes during configuration. This feature sets the groundwork for future patches, including the upcoming IP-TFS patch. Signed-off-by: Antony Antony <antony.antony@secunet.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-05-01net: move sysctl_mem_pcpu_rsv to net_hotdataEric Dumazet2-3/+4
sysctl_mem_pcpu_rsv is used in TCP fast path, move it to net_hodata for better cache locality. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20240429134025.1233626-6-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01net: add <net/proto_memory.h>Eric Dumazet2-78/+83
Move some proto memory definitions out of <net/sock.h> Very few files need them, and following patch will include <net/hotdata.h> from <net/proto_memory.h> Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20240429134025.1233626-5-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01tcp: move tcp_out_of_memory() to net/ipv4/tcp.cEric Dumazet1-9/+1
tcp_out_of_memory() has a single caller: tcp_check_oom(). Following patch will also make sk_memory_allocated() not anymore visible from <net/sock.h> and <net/tcp.h> Add const qualifier to sock argument of tcp_out_of_memory() and tcp_check_oom(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20240429134025.1233626-4-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01net: move sysctl_skb_defer_max to net_hotdataEric Dumazet1-0/+1
sysctl_skb_defer_max is used in TCP fast path, move it to net_hodata. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20240429134025.1233626-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01net: move sysctl_max_skb_frags to net_hotdataEric Dumazet1-0/+1
sysctl_max_skb_frags is used in TCP and MPTCP fast paths, move it to net_hodata for better cache locality. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20240429134025.1233626-2-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01inet: introduce dst_rtable() helperEric Dumazet2-2/+13
I added dst_rt6_info() in commit e8dfd42c17fa ("ipv6: introduce dst_rt6_info() helper") This patch does a similar change for IPv4. Instead of (struct rtable *)dst casts, we can use : #define dst_rtable(_ptr) \ container_of_const(_ptr, struct rtable, dst) Patch is smaller than IPv6 one, because IPv4 has skb_rtable() helper. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Link: https://lore.kernel.org/r/20240429133009.1227754-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-04-30net/smc: add operations to merge sndbuf with peer DMBWen Gu1-0/+3
In some scenarios using Emulated-ISM device, sndbuf can share the same physical memory region with peer DMB to avoid data copy from one side to the other. In such case the sndbuf is only a descriptor that describes the shared memory and does not actually occupy memory, it's more like a ghost buffer. +----------+ +----------+ | socket A | | socket B | +----------+ +----------+ | | +--------+ +--------+ | sndbuf | | DMB | | desc | | desc | +--------+ +--------+ | | | +----v-----+ +--------------------------> memory | +----------+ So here introduces three new SMC-D device operations to check if this feature is supported by device, and to {attach|detach} ghost sndbuf to peer DMB. For now only loopback-ism supports this. Signed-off-by: Wen Gu <guwen@linux.alibaba.com> Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com> Reviewed-and-tested-by: Jan Karcher <jaka@linux.ibm.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-04-30net/smc: mark optional smcd_ops and check for support when calledWen Gu1-6/+8
Some operations are not supported by new introduced Emulated-ISM, so mark them as optional and check if the device supports them when called. Signed-off-by: Wen Gu <guwen@linux.alibaba.com> Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com> Reviewed-and-tested-by: Jan Karcher <jaka@linux.ibm.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-04-30net/smc: decouple ism_client from SMC-D DMB registrationWen Gu1-2/+2
The struct 'ism_client' is specialized for s390 platform firmware ISM. So replace it with 'void' to make SMCD DMB registration helper generic for both Emulated-ISM and existing ISM. Signed-off-by: Wen Gu <guwen@linux.alibaba.com> Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com> Reviewed-and-tested-by: Jan Karcher <jaka@linux.ibm.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-04-30netdev: add queue statsXuan Zhuo1-0/+27
These stats are commonly. Support reporting those via netdev-genl queue stats. name: rx-hw-drops name: rx-hw-drop-overruns name: rx-csum-unnecessary name: rx-csum-none name: rx-csum-bad name: rx-hw-gro-packets name: rx-hw-gro-bytes name: rx-hw-gro-wire-packets name: rx-hw-gro-wire-bytes name: rx-hw-drop-ratelimits name: tx-hw-drops name: tx-hw-drop-errors name: tx-csum-none name: tx-needs-csum name: tx-hw-gso-packets name: tx-hw-gso-bytes name: tx-hw-gso-wire-packets name: tx-hw-gso-wire-bytes name: tx-hw-drop-ratelimits Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 18:18:21 +0300