Jason Xing 5942246426 bpf: Support selective sampling for bpf timestamping ...

Add the bpf_sock_ops_enable_tx_tstamp kfunc to allow BPF programs to
selectively enable TX timestamping on a skb during tcp_sendmsg().

For example, BPF program will limit tracking X numbers of packets
and then will stop there instead of tracing all the sendmsgs of
matched flow all along. It would be helpful for users who cannot
afford to calculate latencies from every sendmsg call probably
due to the performance or storage space consideration.

Signed-off-by: Jason Xing <kerneljasonxing@gmail.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250220072940.99994-12-kerneljasonxing@gmail.com

2025-02-20 14:30:02 -08:00

..

preload

bpf: make preloaded map iterators to display map elements count

2023-07-06 12:42:25 -07:00

arena.c

Merge tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-01-26 18:36:23 -08:00

arraymap.c

bpf: Remove migrate_{disable|enable} in ->map_for_each_callback

2025-01-08 18:06:35 -08:00

bloom_filter.c

bpf: Check bloom filter map value size

2024-03-27 09:56:17 -07:00

bpf_cgrp_storage.c

bpf: Remove migrate_{disable|enable} from bpf_cgrp_storage_lock helpers

2025-01-08 18:06:36 -08:00

bpf_inode_storage.c

bpf: Disable migration when destroying inode storage

2025-01-08 18:06:36 -08:00

bpf_iter.c

[tree-wide] finally take no_llseek out

2024-09-27 08:18:43 -07:00

bpf_local_storage.c

bpf: Remove migrate_{disable|enable} from bpf_selem_free()

2025-01-08 18:06:37 -08:00

bpf_lru_list.c

bpf: Address KCSAN report on bpf_lru_list

2023-05-12 12:01:03 -07:00

bpf_lru_list.h

bpf: lru: Remove unused declaration bpf_lru_promote()

2023-08-08 17:21:42 -07:00

bpf_lsm.c

bpf, lsm: Remove getlsmprop hooks BTF IDs

2024-11-25 14:14:17 -08:00

bpf_struct_ops.c

bpf: Reject struct_ops registration that uses module ptr and the module btf_id is missing

2025-01-03 10:16:46 -08:00

bpf_task_storage.c

bpf: Remove migrate_{disable|enable} from bpf_task_storage_lock helpers

2025-01-08 18:06:36 -08:00

btf_iter.c

bpf: Remove custom build rule

2024-08-30 08:55:26 -07:00

btf_relocate.c

bpf: Remove custom build rule

2024-08-30 08:55:26 -07:00

btf.c

bpf: Support selective sampling for bpf timestamping

2025-02-20 14:30:02 -08:00

cgroup_iter.c

bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg

2023-11-07 15:24:25 -08:00

cgroup.c

Merge tag 'sysctl-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl

2024-11-22 20:36:11 -08:00

core.c

bpf: fix potential error return

2024-12-10 11:17:53 -08:00

cpumap.c

xdp: get rid of xdp_frame::mem.id

2024-12-12 18:22:52 -08:00

cpumask.c

bpf: Remove migrate_{disable,enable} in bpf_cpumask_release()

2025-01-08 18:06:37 -08:00

crypto.c

bpf: crypto: make state and IV dynptr nullable

2024-06-13 16:33:04 -07:00

devmap.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2024-12-12 14:19:05 -08:00

disasm.c

bpf: add special internal-only MOV instruction to resolve per-CPU addrs

2024-04-03 10:29:55 -07:00

disasm.h

…

dispatcher.c

bpf: Add kernel symbol for struct_ops trampoline

2024-11-12 17:13:46 -08:00

hashtab.c

bpf: Free element after unlock in __htab_map_lookup_and_delete_elem()

2025-01-20 09:09:01 -08:00

helpers.c

bpf: Cancel the running bpf_timer through kworker for PREEMPT_RT

2025-01-20 09:09:01 -08:00

inode.c

bpf: Preserve param->string when parsing mount options

2024-10-22 12:56:38 -07:00

Kconfig

bpf: remove CONFIG_BPF_JIT dependency on CONFIG_MODULES of

2024-05-14 00:36:29 -07:00

kmem_cache_iter.c

bpf: Add open coded version of kmem_cache iterator

2024-11-01 11:08:32 -07:00

link_iter.c

bpf: Add bpf_link iterator

2022-05-10 11:20:45 -07:00

local_storage.c

bpf: Replace 8 seq_puts() calls by seq_putc() calls

2024-07-29 12:53:00 -07:00

log.c

bpf: Introduce support for bpf_local_irq_{save,restore}

2024-12-04 08:38:29 -08:00

lpm_trie.c

bpf: Remove migrate_{disable|enable} from LPM trie

2025-01-08 18:06:35 -08:00

Makefile

bpf: Avoid deadlock caused by nested kprobe and fentry bpf programs

2024-12-14 09:49:27 -08:00

map_in_map.c

bpf: switch maps to CLASS(fd, ...)

2024-08-13 15:58:17 -07:00

map_in_map.h

bpf: Add map and need_defer parameters to .map_fd_put_ptr()

2023-12-04 17:50:26 -08:00

map_iter.c

bpf: treewide: Annotate BPF kfuncs in BTF

2024-01-31 20:40:56 -08:00

memalloc.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

2024-11-13 12:52:51 -08:00

mmap_unlock_work.h

…

mprog.c

bpf: Handle bpf_mprog_query with NULL entry

2023-10-06 17:11:20 -07:00

net_namespace.c

net: Add includes masked by netdevice.h including uapi/bpf.h

2021-12-29 20:03:05 -08:00

offload.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2023-09-21 21:49:45 +02:00

percpu_freelist.c

bpf: Initialize same number of free nodes for each pcpu_freelist

2022-11-11 12:05:14 -08:00

percpu_freelist.h

…

prog_iter.c

…

queue_stack_maps.c

bpf: Avoid deadlock when using queue and stack maps from NMI

2023-09-11 19:04:49 -07:00

range_tree.c

bpf: Disable migration before calling ops->map_free()

2025-01-08 18:06:36 -08:00

range_tree.h

bpf: Introduce range_tree data structure and use it in bpf arena

2024-11-13 13:52:45 -08:00

relo_core.c

bpf: Remove custom build rule

2024-08-30 08:55:26 -07:00

reuseport_array.c

bpf: Use sockfd_put() helper

2024-08-30 08:57:47 -07:00

ringbuf.c

bpf: Add MEM_WRITE attribute

2024-10-22 15:42:56 -07:00

stackmap.c

bpf: wire up sleepable bpf_get_stack() and bpf_get_task_stack() helpers

2024-09-11 09:58:31 -07:00

syscall.c

treewide: const qualify ctl_tables where applicable

2025-01-28 13:48:37 +01:00

sysfs_btf.c

btf: Switch vmlinux BTF attribute to sysfs_bin_attr_simple_read()

2025-01-09 10:44:06 +01:00

task_iter.c

Merge tag 'vfs-6.13.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2024-11-18 10:30:29 -08:00

tcx.c

bpf, tcx: Get rid of tcx_link_const

2023-10-23 15:01:53 -07:00

tnum.c

bpf: simplify tnum output if a fully known constant

2023-12-02 11:36:51 -08:00

token.c

remove pointless includes of <linux/fdtable.h>

2024-10-07 13:34:41 -04:00

trampoline.c

bpf: Add kernel symbol for struct_ops trampoline

2024-11-12 17:13:46 -08:00

verifier.c

Merge tag 'bpf-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2025-01-23 08:04:07 -08:00