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authorLinus Torvalds <torvalds@linux-foundation.org>2022-12-14 02:47:48 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-12-14 02:47:48 +0300
commit7e68dd7d07a28faa2e6574dd6b9dbd90cdeaae91 (patch)
treeae0427c5a3b905f24b3a44b510a9bcf35d9b67a3 /scripts
parent1ca06f1c1acecbe02124f14a37cce347b8c1a90c (diff)
parent7c4a6309e27f411743817fe74a832ec2d2798a4b (diff)
downloadlinux-7e68dd7d07a28faa2e6574dd6b9dbd90cdeaae91.tar.xz
Merge tag 'net-next-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni: "Core: - Allow live renaming when an interface is up - Add retpoline wrappers for tc, improving considerably the performances of complex queue discipline configurations - Add inet drop monitor support - A few GRO performance improvements - Add infrastructure for atomic dev stats, addressing long standing data races - De-duplicate common code between OVS and conntrack offloading infrastructure - A bunch of UBSAN_BOUNDS/FORTIFY_SOURCE improvements - Netfilter: introduce packet parser for tunneled packets - Replace IPVS timer-based estimators with kthreads to scale up the workload with the number of available CPUs - Add the helper support for connection-tracking OVS offload BPF: - Support for user defined BPF objects: the use case is to allocate own objects, build own object hierarchies and use the building blocks to build own data structures flexibly, for example, linked lists in BPF - Make cgroup local storage available to non-cgroup attached BPF programs - Avoid unnecessary deadlock detection and failures wrt BPF task storage helpers - A relevant bunch of BPF verifier fixes and improvements - Veristat tool improvements to support custom filtering, sorting, and replay of results - Add LLVM disassembler as default library for dumping JITed code - Lots of new BPF documentation for various BPF maps - Add bpf_rcu_read_{,un}lock() support for sleepable programs - Add RCU grace period chaining to BPF to wait for the completion of access from both sleepable and non-sleepable BPF programs - Add support storing struct task_struct objects as kptrs in maps - Improve helper UAPI by explicitly defining BPF_FUNC_xxx integer values - Add libbpf *_opts API-variants for bpf_*_get_fd_by_id() functions Protocols: - TCP: implement Protective Load Balancing across switch links - TCP: allow dynamically disabling TCP-MD5 static key, reverting back to fast[er]-path - UDP: Introduce optional per-netns hash lookup table - IPv6: simplify and cleanup sockets disposal - Netlink: support different type policies for each generic netlink operation - MPTCP: add MSG_FASTOPEN and FastOpen listener side support - MPTCP: add netlink notification support for listener sockets events - SCTP: add VRF support, allowing sctp sockets binding to VRF devices - Add bridging MAC Authentication Bypass (MAB) support - Extensions for Ethernet VPN bridging implementation to better support multicast scenarios - More work for Wi-Fi 7 support, comprising conversion of all the existing drivers to internal TX queue usage - IPSec: introduce a new offload type (packet offload) allowing complete header processing and crypto offloading - IPSec: extended ack support for more descriptive XFRM error reporting - RXRPC: increase SACK table size and move processing into a per-local endpoint kernel thread, reducing considerably the required locking - IEEE 802154: synchronous send frame and extended filtering support, initial support for scanning available 15.4 networks - Tun: bump the link speed from 10Mbps to 10Gbps - Tun/VirtioNet: implement UDP segmentation offload support Driver API: - PHY/SFP: improve power level switching between standard level 1 and the higher power levels - New API for netdev <-> devlink_port linkage - PTP: convert existing drivers to new frequency adjustment implementation - DSA: add support for rx offloading - Autoload DSA tagging driver when dynamically changing protocol - Add new PCP and APPTRUST attributes to Data Center Bridging - Add configuration support for 800Gbps link speed - Add devlink port function attribute to enable/disable RoCE and migratable - Extend devlink-rate to support strict prioriry and weighted fair queuing - Add devlink support to directly reading from region memory - New device tree helper to fetch MAC address from nvmem - New big TCP helper to simplify temporary header stripping New hardware / drivers: - Ethernet: - Marvel Octeon CNF95N and CN10KB Ethernet Switches - Marvel Prestera AC5X Ethernet Switch - WangXun 10 Gigabit NIC - Motorcomm yt8521 Gigabit Ethernet - Microchip ksz9563 Gigabit Ethernet Switch - Microsoft Azure Network Adapter - Linux Automation 10Base-T1L adapter - PHY: - Aquantia AQR112 and AQR412 - Motorcomm YT8531S - PTP: - Orolia ART-CARD - WiFi: - MediaTek Wi-Fi 7 (802.11be) devices - RealTek rtw8821cu, rtw8822bu, rtw8822cu and rtw8723du USB devices - Bluetooth: - Broadcom BCM4377/4378/4387 Bluetooth chipsets - Realtek RTL8852BE and RTL8723DS - Cypress.CYW4373A0 WiFi + Bluetooth combo device Drivers: - CAN: - gs_usb: bus error reporting support - kvaser_usb: listen only and bus error reporting support - Ethernet NICs: - Intel (100G): - extend action skbedit to RX queue mapping - implement devlink-rate support - support direct read from memory - nVidia/Mellanox (mlx5): - SW steering improvements, increasing rules update rate - Support for enhanced events compression - extend H/W offload packet manipulation capabilities - implement IPSec packet offload mode - nVidia/Mellanox (mlx4): - better big TCP support - Netronome Ethernet NICs (nfp): - IPsec offload support - add support for multicast filter - Broadcom: - RSS and PTP support improvements - AMD/SolarFlare: - netlink extened ack improvements - add basic flower matches to offload, and related stats - Virtual NICs: - ibmvnic: introduce affinity hint support - small / embedded: - FreeScale fec: add initial XDP support - Marvel mv643xx_eth: support MII/GMII/RGMII modes for Kirkwood - TI am65-cpsw: add suspend/resume support - Mediatek MT7986: add RX wireless wthernet dispatch support - Realtek 8169: enable GRO software interrupt coalescing per default - Ethernet high-speed switches: - Microchip (sparx5): - add support for Sparx5 TC/flower H/W offload via VCAP - Mellanox mlxsw: - add 802.1X and MAC Authentication Bypass offload support - add ip6gre support - Embedded Ethernet switches: - Mediatek (mtk_eth_soc): - improve PCS implementation, add DSA untag support - enable flow offload support - Renesas: - add rswitch R-Car Gen4 gPTP support - Microchip (lan966x): - add full XDP support - add TC H/W offload via VCAP - enable PTP on bridge interfaces - Microchip (ksz8): - add MTU support for KSZ8 series - Qualcomm 802.11ax WiFi (ath11k): - support configuring channel dwell time during scan - MediaTek WiFi (mt76): - enable Wireless Ethernet Dispatch (WED) offload support - add ack signal support - enable coredump support - remain_on_channel support - Intel WiFi (iwlwifi): - enable Wi-Fi 7 Extremely High Throughput (EHT) PHY capabilities - 320 MHz channels support - RealTek WiFi (rtw89): - new dynamic header firmware format support - wake-over-WLAN support" * tag 'net-next-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2002 commits) ipvs: fix type warning in do_div() on 32 bit net: lan966x: Remove a useless test in lan966x_ptp_add_trap() net: ipa: add IPA v4.7 support dt-bindings: net: qcom,ipa: Add SM6350 compatible bnxt: Use generic HBH removal helper in tx path IPv6/GRO: generic helper to remove temporary HBH/jumbo header in driver selftests: forwarding: Add bridge MDB test selftests: forwarding: Rename bridge_mdb test bridge: mcast: Support replacement of MDB port group entries bridge: mcast: Allow user space to specify MDB entry routing protocol bridge: mcast: Allow user space to add (*, G) with a source list and filter mode bridge: mcast: Add support for (*, G) with a source list and filter mode bridge: mcast: Avoid arming group timer when (S, G) corresponds to a source bridge: mcast: Add a flag for user installed source entries bridge: mcast: Expose __br_multicast_del_group_src() bridge: mcast: Expose br_multicast_new_group_src() bridge: mcast: Add a centralized error path bridge: mcast: Place netlink policy before validation functions bridge: mcast: Split (*, G) and (S, G) addition into different functions bridge: mcast: Do not derive entry type from its filter mode ...
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/bpf_doc.py49
1 files changed, 35 insertions, 14 deletions
diff --git a/scripts/bpf_doc.py b/scripts/bpf_doc.py
index d5c389df6045..e8d90829f23e 100755
--- a/scripts/bpf_doc.py
+++ b/scripts/bpf_doc.py
@@ -97,6 +97,7 @@ class HeaderParser(object):
self.desc_unique_helpers = set()
self.define_unique_helpers = []
self.helper_enum_vals = {}
+ self.helper_enum_pos = {}
self.desc_syscalls = []
self.enum_syscalls = []
@@ -253,54 +254,71 @@ class HeaderParser(object):
break
def parse_define_helpers(self):
- # Parse FN(...) in #define __BPF_FUNC_MAPPER to compare later with the
+ # Parse FN(...) in #define ___BPF_FUNC_MAPPER to compare later with the
# number of unique function names present in description and use the
# correct enumeration value.
# Note: seek_to(..) discards the first line below the target search text,
- # resulting in FN(unspec) being skipped and not added to self.define_unique_helpers.
- self.seek_to('#define __BPF_FUNC_MAPPER(FN)',
+ # resulting in FN(unspec, 0, ##ctx) being skipped and not added to
+ # self.define_unique_helpers.
+ self.seek_to('#define ___BPF_FUNC_MAPPER(FN, ctx...)',
'Could not find start of eBPF helper definition list')
# Searches for one FN(\w+) define or a backslash for newline
- p = re.compile('\s*FN\((\w+)\)|\\\\')
+ p = re.compile('\s*FN\((\w+), (\d+), ##ctx\)|\\\\')
fn_defines_str = ''
- i = 1 # 'unspec' is skipped as mentioned above
+ i = 0
while True:
capture = p.match(self.line)
if capture:
fn_defines_str += self.line
- self.helper_enum_vals[capture.expand(r'bpf_\1')] = i
+ helper_name = capture.expand(r'bpf_\1')
+ self.helper_enum_vals[helper_name] = int(capture[2])
+ self.helper_enum_pos[helper_name] = i
i += 1
else:
break
self.line = self.reader.readline()
# Find the number of occurences of FN(\w+)
- self.define_unique_helpers = re.findall('FN\(\w+\)', fn_defines_str)
+ self.define_unique_helpers = re.findall('FN\(\w+, \d+, ##ctx\)', fn_defines_str)
- def assign_helper_values(self):
+ def validate_helpers(self):
+ last_helper = ''
seen_helpers = set()
+ seen_enum_vals = set()
+ i = 0
for helper in self.helpers:
proto = helper.proto_break_down()
name = proto['name']
try:
enum_val = self.helper_enum_vals[name]
+ enum_pos = self.helper_enum_pos[name]
except KeyError:
raise Exception("Helper %s is missing from enum bpf_func_id" % name)
+ if name in seen_helpers:
+ if last_helper != name:
+ raise Exception("Helper %s has multiple descriptions which are not grouped together" % name)
+ continue
+
# Enforce current practice of having the descriptions ordered
# by enum value.
+ if enum_pos != i:
+ raise Exception("Helper %s (ID %d) comment order (#%d) must be aligned with its position (#%d) in enum bpf_func_id" % (name, enum_val, i + 1, enum_pos + 1))
+ if enum_val in seen_enum_vals:
+ raise Exception("Helper %s has duplicated value %d" % (name, enum_val))
+
seen_helpers.add(name)
- desc_val = len(seen_helpers)
- if desc_val != enum_val:
- raise Exception("Helper %s comment order (#%d) must be aligned with its position (#%d) in enum bpf_func_id" % (name, desc_val, enum_val))
+ last_helper = name
+ seen_enum_vals.add(enum_val)
helper.enum_val = enum_val
+ i += 1
def run(self):
self.parse_desc_syscall()
self.parse_enum_syscall()
self.parse_desc_helpers()
self.parse_define_helpers()
- self.assign_helper_values()
+ self.validate_helpers()
self.reader.close()
###############################################################################
@@ -423,7 +441,7 @@ class PrinterHelpersRST(PrinterRST):
"""
def __init__(self, parser):
self.elements = parser.helpers
- self.elem_number_check(parser.desc_unique_helpers, parser.define_unique_helpers, 'helper', '__BPF_FUNC_MAPPER')
+ self.elem_number_check(parser.desc_unique_helpers, parser.define_unique_helpers, 'helper', '___BPF_FUNC_MAPPER')
def print_header(self):
header = '''\
@@ -636,7 +654,7 @@ class PrinterHelpers(Printer):
"""
def __init__(self, parser):
self.elements = parser.helpers
- self.elem_number_check(parser.desc_unique_helpers, parser.define_unique_helpers, 'helper', '__BPF_FUNC_MAPPER')
+ self.elem_number_check(parser.desc_unique_helpers, parser.define_unique_helpers, 'helper', '___BPF_FUNC_MAPPER')
type_fwds = [
'struct bpf_fib_lookup',
@@ -667,6 +685,7 @@ class PrinterHelpers(Printer):
'struct udp6_sock',
'struct unix_sock',
'struct task_struct',
+ 'struct cgroup',
'struct __sk_buff',
'struct sk_msg_md',
@@ -724,6 +743,7 @@ class PrinterHelpers(Printer):
'struct udp6_sock',
'struct unix_sock',
'struct task_struct',
+ 'struct cgroup',
'struct path',
'struct btf_ptr',
'struct inode',
@@ -732,6 +752,7 @@ class PrinterHelpers(Printer):
'struct bpf_timer',
'struct mptcp_sock',
'struct bpf_dynptr',
+ 'const struct bpf_dynptr',
'struct iphdr',
'struct ipv6hdr',
}