osmocom-net-gprs

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482 discussions

Binary packages: changes in supported distributions

by Oliver Smith

Hello various Osmocom mailing lists, the official Osmocom binary packages will not be built anymore for the following distributions starting at 2024-02: * Raspberry Pi OS 64-bit (use Debian_12 etc. instead) * Ubuntu 23.04 (Ubuntu 23.10 and LTS 20.04/22.04 feeds are available) * openSUSE 15.4 (openSUSE Tumbleweed feed is available) * Debian Testing (Debian Unstable and 12-10 feeds are available) For Raspberry Pi OS 64-bit users, make sure to adjust your /etc/apt/sources.list.d as described here to switch to a Debian aarch64 feed: https://osmocom.org/projects/cellular-infrastructure/wiki/Latest_Builds See the new linux distributions article for information on how long we plan to keep building packages for each distribution: https://osmocom.org/projects/cellular-infrastructure/wiki/Linux_distributio… Let me know if you have questions. Best regards, Oliver -- - Oliver Smith <osmith(a)sysmocom.de> https://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

1 year, 7 months

Professional Dissertation Writing Help

by markanderson8093＠gmail.com

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1 year, 9 months

Professional Dissertation Writing Help

by markanderson8093＠gmail.com

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1 year, 9 months

[PATCH net 0/2] GTP tunnel driver fixes

by Pablo Neira Ayuso

Hi, The following patchset contains two fixes for the GTP tunnel driver: 1) Incorrect GTPA_MAX definition in UAPI headers. This is updating an existing UAPI definition but for a good reason, this is certainly broken. Similar fixes for incorrect _MAX definition in netlink headers were applied in the past too. 2) Fix GTP driver PMTU with GRO packets, add missing call to skb_gso_validate_network_len() to handle GRO packets. Please apply, Thanks. Pablo Neira Ayuso (2): gtp: uapi: fix GTPA_MAX gtp: fix fragmentation needed check with gso drivers/net/gtp.c | 5 +++-- include/uapi/linux/gtp.h | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) -- 2.30.2

1 year, 9 months

Re: [PATCH net-next v2] ethtool: ice: Support for RSS settings to GTP from ethtool

by Jakub Kicinski

Thanks for the v2! Adding Willem, Pablo, and Harald to CC (please CC them on future versions). On Thu, 12 Oct 2023 06:01:15 +0000 Takeru Hayasaka wrote: > diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h > index f7fba0dc87e5..a2d4f2081cf3 100644 > --- a/include/uapi/linux/ethtool.h > +++ b/include/uapi/linux/ethtool.h > @@ -2011,6 +2011,18 @@ static inline int ethtool_validate_duplex(__u8 duplex) > #define IPV4_FLOW 0x10 /* hash only */ > #define IPV6_FLOW 0x11 /* hash only */ > #define ETHER_FLOW 0x12 /* spec only (ether_spec) */ > +#define GTPU_V4_FLOW 0x13 /* hash only */ > +#define GTPU_V6_FLOW 0x14 /* hash only */ > +#define GTPC_V4_FLOW 0x15 /* hash only */ > +#define GTPC_V6_FLOW 0x16 /* hash only */ > +#define GTPC_TEID_V4_FLOW 0x17 /* hash only */ > +#define GTPC_TEID_V6_FLOW 0x18 /* hash only */ > +#define GTPU_EH_V4_FLOW 0x19 /* hash only */ > +#define GTPU_EH_V6_FLOW 0x20 /* hash only */ nit: please note that these are hex numbers, next value after 0x19 is 0x1a, not 0x20. > +#define GTPU_UL_V4_FLOW 0x21 /* hash only */ > +#define GTPU_UL_V6_FLOW 0x22 /* hash only */ > +#define GTPU_DL_V4_FLOW 0x23 /* hash only */ > +#define GTPU_DL_V6_FLOW 0x24 /* hash only */ > /* Flag to enable additional fields in struct ethtool_rx_flow_spec */ > #define FLOW_EXT 0x80000000 > #define FLOW_MAC_EXT 0x40000000 What gives me pause here is the number of flow sub-types we define for GTP hashing. My understanding of GTP is limited to what I just read on Wikipedia. IIUC the GTPC vs GTPU distinction comes down to the UDP port on which the protocol runs? Are the frames also different? I'm guessing UL/DL are uplink/downlink but what's EH? How do GTPU_V4_FLOW, GTPU_EH_V4_FLOW, GTPU_UL_V4_FLOW, and GTPU_DL_V4_FLOW differ? Key question is - are there reasonable use cases that you can think of for enabling GTP hashing for each one of those bits individually or can we combine some of them? > @@ -2025,6 +2037,7 @@ static inline int ethtool_validate_duplex(__u8 duplex) > #define RXH_IP_DST (1 << 5) > #define RXH_L4_B_0_1 (1 << 6) /* src port in case of TCP/UDP/SCTP */ > #define RXH_L4_B_2_3 (1 << 7) /* dst port in case of TCP/UDP/SCTP */ > +#define RXH_GTP_TEID (1 << 8) /* teid in case of GTP */ > #define RXH_DISCARD (1 << 31)

1 year, 9 months

September 2023 Osmocom CNI releases (202302)

by Pau Espin Pedrol

Hi all, I am happy to announce that a new version 202309 of the Osmocom CNI (Cellular Network Infrastructure) software has been released this week. For further information, please visit: https://osmocom.org/news/220 Regards, Pau -- - Pau Espin Pedrol <pespin(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

1 year, 10 months

Osmocom discourse as alternative to mailing lists

by Harald Welte

Dear Osmocom community, while many people with a long history in FOSS development have no issues at all with mailing lists as primary form of engaging with their community, they have undoubtedly fallen out of fashion in favor of various chat/messaging systems or web based forums. In Osmocom, we've just launched an installation of the discourse forum software available at https://discourse.osmocom.org/ providing an alternative to our traditional mailing lists at https://lists.osmocom.org/ We're looking forward to see whether this web-based approach will facilitate more and/or other people to engage with the Osmocom developer/contributor community. Feel free to join and get the discussions started. If there's a need for more categories or sub-categories, just let one of the moderators know and we can help with that. The old mailing lists will continue to remain available for those who prefer them. -- - Harald Welte <laforge(a)osmocom.org> https://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

2 years

[PATCH net-next 0/3] net: Remove more RTO_ONLINK users.

by Guillaume Nault

Code that initialise a flowi4 structure manually before doing a fib lookup can easily avoid overloading ->flowi4_tos with the RTO_ONLINK bit. They can just set ->flowi4_scope correctly instead. Properly separating the routing scope from ->flowi4_tos will allow to eventually convert this field to dscp_t (to ensure proper separation between DSCP and ECN). Guillaume Nault (3): gtp: Set TOS and routing scope independently for fib lookups. dccp: Set TOS and routing scope independently for fib lookups. sctp: Set TOS and routing scope independently for fib lookups. drivers/net/gtp.c | 3 ++- net/dccp/ipv4.c | 3 ++- net/sctp/protocol.c | 3 ++- 3 files changed, 6 insertions(+), 3 deletions(-) -- 2.39.2

2 years

Deprecating support for big endian in Osmocom

by Harald Welte

Hi all, during recent patch review (https://gerrit.osmocom.org/c/osmo-trx/+/33737) the topic of continuing to maintain support for big endian machines has come up. While traditionally I've always been a strong proponent of writing portable code that can run also on big endian systems, it is not the year 2003 or 2008 anymore, and PowerPC (the main big endian platform) is dead by now, as is SPARC. Not just in newly-built processors, but also in existing and still operating machines, at least of the class that would run our code. So unless somebody objects with strong arguments, I'd propose to officially and explicitly drop supporting big endian systems from osmocom CNI projects. From what I can tell, this would primarily mean * drop the struct_endianness check from the commit verification * removing all our struct_endianness-generated or other code that explicitly adds big endian support * adding some kind of #warning or even #error to a common libosmocore header file if anyone tries to build on big endian This obviously doesn't mean we can abandon using [osmo_]{htonl,ntohl}, as network byte order is still network byte order. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> https://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

2 years

[PATCH v1 net] gtp: Fix use-after-free in __gtp_encap_destroy().

by Kuniyuki Iwashima

syzkaller reported use-after-free in __gtp_encap_destroy(). [0] It shows the same process freed sk and touched it illegally. Commit e198987e7dd7 ("gtp: fix suspicious RCU usage") added lock_sock() and release_sock() in __gtp_encap_destroy() to protect sk->sk_user_data, but release_sock() is called after sock_put() releases the last refcnt. [0]: BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: slab-use-after-free in atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:541 [inline] BUG: KASAN: slab-use-after-free in queued_spin_lock include/asm-generic/qspinlock.h:111 [inline] BUG: KASAN: slab-use-after-free in do_raw_spin_lock include/linux/spinlock.h:186 [inline] BUG: KASAN: slab-use-after-free in __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline] BUG: KASAN: slab-use-after-free in _raw_spin_lock_bh+0x75/0xe0 kernel/locking/spinlock.c:178 Write of size 4 at addr ffff88800dbef398 by task syz-executor.2/2401 CPU: 1 PID: 2401 Comm: syz-executor.2 Not tainted 6.4.0-rc5-01219-gfa0e21fa4443 #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x72/0xa0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:351 [inline] print_report+0xcc/0x620 mm/kasan/report.c:462 kasan_report+0xb2/0xe0 mm/kasan/report.c:572 check_region_inline mm/kasan/generic.c:181 [inline] kasan_check_range+0x39/0x1c0 mm/kasan/generic.c:187 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:541 [inline] queued_spin_lock include/asm-generic/qspinlock.h:111 [inline] do_raw_spin_lock include/linux/spinlock.h:186 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline] _raw_spin_lock_bh+0x75/0xe0 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] release_sock+0x1f/0x1a0 net/core/sock.c:3526 gtp_encap_disable_sock drivers/net/gtp.c:651 [inline] gtp_encap_disable+0xb9/0x220 drivers/net/gtp.c:664 gtp_dev_uninit+0x19/0x50 drivers/net/gtp.c:728 unregister_netdevice_many_notify+0x97e/0x1520 net/core/dev.c:10841 rtnl_delete_link net/core/rtnetlink.c:3216 [inline] rtnl_dellink+0x3c0/0xb30 net/core/rtnetlink.c:3268 rtnetlink_rcv_msg+0x450/0xb10 net/core/rtnetlink.c:6423 netlink_rcv_skb+0x15d/0x450 net/netlink/af_netlink.c:2548 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x700/0x930 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x91c/0xe30 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0x1b7/0x200 net/socket.c:747 ____sys_sendmsg+0x75a/0x990 net/socket.c:2493 ___sys_sendmsg+0x11d/0x1c0 net/socket.c:2547 __sys_sendmsg+0xfe/0x1d0 net/socket.c:2576 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3f/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f1168b1fe5d Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 9f 1b 00 f7 d8 64 89 01 48 RSP: 002b:00007f1167edccc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004bbf80 RCX: 00007f1168b1fe5d RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000003 RBP: 00000000004bbf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1168b80530 R15: 0000000000000000 </TASK> Allocated by task 1483: kasan_save_stack+0x22/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x59/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:711 [inline] slab_alloc_node mm/slub.c:3451 [inline] slab_alloc mm/slub.c:3459 [inline] __kmem_cache_alloc_lru mm/slub.c:3466 [inline] kmem_cache_alloc+0x16d/0x340 mm/slub.c:3475 sk_prot_alloc+0x5f/0x280 net/core/sock.c:2073 sk_alloc+0x34/0x6c0 net/core/sock.c:2132 inet6_create net/ipv6/af_inet6.c:192 [inline] inet6_create+0x2c7/0xf20 net/ipv6/af_inet6.c:119 __sock_create+0x2a1/0x530 net/socket.c:1535 sock_create net/socket.c:1586 [inline] __sys_socket_create net/socket.c:1623 [inline] __sys_socket_create net/socket.c:1608 [inline] __sys_socket+0x137/0x250 net/socket.c:1651 __do_sys_socket net/socket.c:1664 [inline] __se_sys_socket net/socket.c:1662 [inline] __x64_sys_socket+0x72/0xb0 net/socket.c:1662 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3f/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x72/0xdc Freed by task 2401: kasan_save_stack+0x22/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:521 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free mm/kasan/common.c:200 [inline] __kasan_slab_free+0x10c/0x1b0 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook mm/slub.c:1807 [inline] slab_free mm/slub.c:3786 [inline] kmem_cache_free+0xb4/0x490 mm/slub.c:3808 sk_prot_free net/core/sock.c:2113 [inline] __sk_destruct+0x500/0x720 net/core/sock.c:2207 sk_destruct+0xc1/0xe0 net/core/sock.c:2222 __sk_free+0xed/0x3d0 net/core/sock.c:2233 sk_free+0x7c/0xa0 net/core/sock.c:2244 sock_put include/net/sock.h:1981 [inline] __gtp_encap_destroy+0x165/0x1b0 drivers/net/gtp.c:634 gtp_encap_disable_sock drivers/net/gtp.c:651 [inline] gtp_encap_disable+0xb9/0x220 drivers/net/gtp.c:664 gtp_dev_uninit+0x19/0x50 drivers/net/gtp.c:728 unregister_netdevice_many_notify+0x97e/0x1520 net/core/dev.c:10841 rtnl_delete_link net/core/rtnetlink.c:3216 [inline] rtnl_dellink+0x3c0/0xb30 net/core/rtnetlink.c:3268 rtnetlink_rcv_msg+0x450/0xb10 net/core/rtnetlink.c:6423 netlink_rcv_skb+0x15d/0x450 net/netlink/af_netlink.c:2548 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x700/0x930 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x91c/0xe30 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0x1b7/0x200 net/socket.c:747 ____sys_sendmsg+0x75a/0x990 net/socket.c:2493 ___sys_sendmsg+0x11d/0x1c0 net/socket.c:2547 __sys_sendmsg+0xfe/0x1d0 net/socket.c:2576 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3f/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x72/0xdc The buggy address belongs to the object at ffff88800dbef300 which belongs to the cache UDPv6 of size 1344 The buggy address is located 152 bytes inside of freed 1344-byte region [ffff88800dbef300, ffff88800dbef840) The buggy address belongs to the physical page: page:00000000d31bfed5 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800dbeed40 pfn:0xdbe8 head:00000000d31bfed5 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888008ee0801 flags: 0x100000000010200(slab|head|node=0|zone=1) page_type: 0xffffffff() raw: 0100000000010200 ffff88800c7a3000 dead000000000122 0000000000000000 raw: ffff88800dbeed40 0000000080160015 00000001ffffffff ffff888008ee0801 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88800dbef280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88800dbef300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88800dbef380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88800dbef400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88800dbef480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb Fixes: e198987e7dd7 ("gtp: fix suspicious RCU usage") Reported-by: syzkaller <syzkaller(a)googlegroups.com> Signed-off-by: Kuniyuki Iwashima <kuniyu(a)amazon.com> --- drivers/net/gtp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 15c7dc82107f..acb20ad4e37e 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -631,7 +631,9 @@ static void __gtp_encap_destroy(struct sock *sk) gtp->sk1u = NULL; udp_sk(sk)->encap_type = 0; rcu_assign_sk_user_data(sk, NULL); + release_sock(sk); sock_put(sk); + return; } release_sock(sk); } -- 2.30.2

2 years, 1 month

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