October 2020 - B.A.T.M.A.N - lists.open-mesh.org

[PATCH net 00/12] net: iflink and link-netnsid fixes

by Sabrina Dubroca

In a lot of places, we use this kind of comparison to detect if a device has a lower link: dev->ifindex != dev_get_iflink(dev) This seems to be a leftover of the pre-netns days, when the ifindex was unique over the whole system. Nowadays, with network namespaces, it's very easy to create a device with the same ifindex as its lower link: ip netns add main ip netns add peer ip -net main link add dummy0 type dummy ip -net main link add link dummy0 macvlan0 netns peer type macvlan ip -net main link show type dummy 9: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop ... ip -net peer link show type macvlan 9: macvlan0@if9: <BROADCAST,MULTICAST> mtu 1500 qdisc noop ... To detect if a device has a lower link, we can simply check the existence of the dev->netdev_ops->ndo_get_iflink operation, instead of checking its return value. In particular, I attempted to fix one of these checks in commit feadc4b6cf42 ("rtnetlink: always put IFLA_LINK for links with a link-netnsid"), but this patch isn't correct, since tunnel devices can export IFLA_LINK_NETNSID without IFLA_LINK. That patch needs to be reverted. This series will fix all those bogus comparisons, and export missing IFLA_LINK_NETNSID attributes in bridge and ipv6 dumps. ipvlan and geneve are also missing the get_link_net operation, so userspace can't know when those device are cross-netns. There are a couple of other device types that have an ndo_get_iflink op but no get_link_net (virt_wifi, ipoib), and should probably also have a get_link_net. Sabrina Dubroca (12): ipvlan: add get_link_net geneve: add get_link_net Revert "rtnetlink: always put IFLA_LINK for links with a link-netnsid" rtnetlink: always put IFLA_LINK for links with ndo_get_iflink bridge: always put IFLA_LINK for ports with ndo_get_iflink bridge: advertise IFLA_LINK_NETNSID when dumping bridge ports ipv6: always put IFLA_LINK for devices with ndo_get_iflink ipv6: advertise IFLA_LINK_NETNSID when dumping ipv6 addresses net: link_watch: fix operstate when the link has the same index as the device net: link_watch: fix detection of urgent events batman-adv: fix iflink detection in batadv_is_on_batman_iface batman-adv: fix detection of lower link in batadv_get_real_netdevice drivers/net/can/vxcan.c | 2 +- drivers/net/geneve.c | 8 ++++++++ drivers/net/ipvlan/ipvlan_main.c | 9 +++++++++ drivers/net/veth.c | 2 +- include/net/rtnetlink.h | 4 ++++ net/batman-adv/hard-interface.c | 4 ++-- net/bridge/br_netlink.c | 4 +++- net/core/link_watch.c | 4 ++-- net/core/rtnetlink.c | 25 ++++++++++++------------- net/ipv6/addrconf.c | 11 ++++++++++- 10 files changed, 52 insertions(+), 21 deletions(-) -- 2.28.0

4 months, 2 weeks

3
5
0 / 0

WARNING in sta_info_alloc

by syzbot

Hello, syzbot found the following issue on: HEAD commit: 549738f1 Linux 5.9-rc8 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15b97ba3900000 kernel config: https://syzkaller.appspot.com/x/.config?x=c06bcf3cc963d91c dashboard link: https://syzkaller.appspot.com/bug?extid=45d7c243c006f39dc55a compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12bae9c0500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1099b1c0500000 The issue was bisected to: commit 643c332d519bdfbf80d21f40d1c0aa0ccf3ec1cb Author: Zi Shen Lim <zlim.lnx(a)gmail.com> Date: Thu Jun 9 04:18:50 2016 +0000 arm64: bpf: optimize LD_ABS, LD_IND bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11d44477900000 final oops: https://syzkaller.appspot.com/x/report.txt?x=13d44477900000 console output: https://syzkaller.appspot.com/x/log.txt?x=15d44477900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+45d7c243c006f39dc55a(a)syzkaller.appspotmail.com Fixes: 643c332d519b ("arm64: bpf: optimize LD_ABS, LD_IND") ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6879 at net/mac80211/ieee80211_i.h:1447 ieee80211_get_sband net/mac80211/ieee80211_i.h:1447 [inline] WARNING: CPU: 0 PID: 6879 at net/mac80211/ieee80211_i.h:1447 sta_info_alloc+0x1900/0x1f90 net/mac80211/sta_info.c:469 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 6879 Comm: syz-executor071 Not tainted 5.9.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 panic+0x382/0x7fb kernel/panic.c:231 __warn.cold+0x20/0x4b kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:ieee80211_get_sband net/mac80211/ieee80211_i.h:1447 [inline] RIP: 0010:sta_info_alloc+0x1900/0x1f90 net/mac80211/sta_info.c:469 Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f0 04 00 00 49 8b 9f 60 01 00 00 e9 fc f6 ff ff e8 80 20 b6 f9 <0f> 0b e8 e9 62 66 00 31 ff 89 c3 89 c6 e8 ce 1c b6 f9 85 db 74 1d RSP: 0018:ffffc9000539f498 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff87c01d61 RDX: ffff8880a91ec3c0 RSI: ffffffff87c01e10 RDI: 0000000000000005 RBP: ffff8880896e0c80 R08: 0000000000000001 R09: ffffffff8d0c29e7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880896e31b0 R14: dffffc0000000000 R15: ffff888092f06000 ieee80211_add_station+0x28c/0x660 net/mac80211/cfg.c:1586 rdev_add_station net/wireless/rdev-ops.h:190 [inline] nl80211_new_station+0xde7/0x1440 net/wireless/nl80211.c:6294 genl_family_rcv_msg_doit net/netlink/genetlink.c:669 [inline] genl_family_rcv_msg net/netlink/genetlink.c:714 [inline] genl_rcv_msg+0x61d/0x980 net/netlink/genetlink.c:731 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470 genl_rcv+0x24/0x40 net/netlink/genetlink.c:742 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x441999 Code: e8 dc 05 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 7b 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd9fa54bf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441999 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 000000306e616c77 R08: 0000000000000000 R09: 0000002000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000004 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller(a)googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches

1 year, 2 months

3
3
0 / 0

general protection fault in rt6_fill_node

by syzbot

Hello, syzbot found the following issue on: HEAD commit: d7223aa5 Merge branch 'l2tp-replace-custom-logging-code-wi.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=1399802e900000 kernel config: https://syzkaller.appspot.com/x/.config?x=3d400a47d1416652 dashboard link: https://syzkaller.appspot.com/bug?extid=81af6e9b3c4b8bc874f8 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12949b5a900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17b60e46900000 The issue was bisected to: commit 867d03bc238f62fcd28f287b9da8af5e483baeab Author: Robert Hancock <hancock(a)sedsystems.ca> Date: Thu Jun 6 22:28:14 2019 +0000 net: axienet: Add DMA registers to ethtool register dump bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1523f266900000 final oops: https://syzkaller.appspot.com/x/report.txt?x=1723f266900000 console output: https://syzkaller.appspot.com/x/log.txt?x=1323f266900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+81af6e9b3c4b8bc874f8(a)syzkaller.appspotmail.com Fixes: 867d03bc238f ("net: axienet: Add DMA registers to ethtool register dump") IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route IPv6: NLM_F_CREATE should be set when creating new route general protection fault, probably for non-canonical address 0xdffffc0000000010: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000080-0x0000000000000087] CPU: 1 PID: 7050 Comm: syz-executor648 Not tainted 5.9.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nexthop_is_blackhole include/net/nexthop.h:240 [inline] RIP: 0010:rt6_fill_node+0x1396/0x2940 net/ipv6/route.c:5584 Code: 3c 02 00 0f 85 ef 14 00 00 4d 8b 6d 10 e8 f2 1c 87 fa 49 8d bd 80 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 10 15 00 00 4d 8b ad 80 00 00 00 e8 34 4b 06 01 RSP: 0018:ffffc900063672b0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8880a88bd800 RCX: ffffffff86ed2456 RDX: 0000000000000010 RSI: ffffffff86ed248e RDI: 0000000000000080 RBP: ffffc900063673e8 R08: 0000000000000001 R09: ffff8880a88bd847 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880a8ded940 R13: 0000000000000000 R14: ffff8880a899ea00 R15: 0000000000000000 FS: 00000000010e3880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000300 CR3: 00000000a8efa000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inet6_rt_notify+0x14c/0x2b0 net/ipv6/route.c:6017 fib6_add_rt2node net/ipv6/ip6_fib.c:1246 [inline] fib6_add+0x2840/0x3ed0 net/ipv6/ip6_fib.c:1473 __ip6_ins_rt net/ipv6/route.c:1317 [inline] ip6_route_add+0x8b/0x150 net/ipv6/route.c:3744 inet6_rtm_newroute+0x152/0x160 net/ipv6/route.c:5360 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5563 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x443ef9 Code: e8 8c 07 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 bb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff25138308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443ef9 RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 RBP: 00007fff25138310 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000e25f R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 46e9e8854602a8a3 ]--- RIP: 0010:nexthop_is_blackhole include/net/nexthop.h:240 [inline] RIP: 0010:rt6_fill_node+0x1396/0x2940 net/ipv6/route.c:5584 Code: 3c 02 00 0f 85 ef 14 00 00 4d 8b 6d 10 e8 f2 1c 87 fa 49 8d bd 80 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 10 15 00 00 4d 8b ad 80 00 00 00 e8 34 4b 06 01 RSP: 0018:ffffc900063672b0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8880a88bd800 RCX: ffffffff86ed2456 RDX: 0000000000000010 RSI: ffffffff86ed248e RDI: 0000000000000080 RBP: ffffc900063673e8 R08: 0000000000000001 R09: ffff8880a88bd847 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880a8ded940 R13: 0000000000000000 R14: ffff8880a899ea00 R15: 0000000000000000 FS: 00000000010e3880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000300 CR3: 00000000a8efa000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller(a)googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches

1 year, 10 months

2
2
0 / 0

general protection fault in nexthop_is_blackhole

by syzbot

Hello, syzbot found the following issue on: HEAD commit: c3d8f220 Merge tag 'kbuild-fixes-v5.9' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11c48c96900000 kernel config: https://syzkaller.appspot.com/x/.config?x=bb68b9e8a8cc842f dashboard link: https://syzkaller.appspot.com/bug?extid=b2c08a2f5cfef635cc3a compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14d75e39900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12aea519900000 The issue was bisected to: commit de47c5d8e11dda678e4354eeb4235e58e92f7cd2 Author: Hariprasad Kelam <hariprasad.kelam(a)gmail.com> Date: Sat Jun 8 09:00:50 2019 +0000 af_key: make use of BUG_ON macro bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10450972900000 final oops: https://syzkaller.appspot.com/x/report.txt?x=12450972900000 console output: https://syzkaller.appspot.com/x/log.txt?x=14450972900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b2c08a2f5cfef635cc3a(a)syzkaller.appspotmail.com Fixes: de47c5d8e11d ("af_key: make use of BUG_ON macro") IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route IPv6: NLM_F_CREATE should be set when creating new route general protection fault, probably for non-canonical address 0xdffffc0000000010: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000080-0x0000000000000087] CPU: 0 PID: 7050 Comm: syz-executor320 Not tainted 5.9.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nexthop_is_blackhole+0x145/0x250 include/net/nexthop.h:240 Code: 4d fa 49 83 c6 10 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 39 f0 8c fa 49 8b 1e 48 83 eb 80 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 1c f0 8c fa 48 8b 1b e8 e4 4e 02 RSP: 0018:ffffc900061172b8 EFLAGS: 00010202 RAX: 0000000000000010 RBX: 0000000000000080 RCX: ffff888091444300 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff8727dfc7 R09: ffffed1012299e09 R10: ffffed1012299e09 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880919da280 R14: ffff8880a9576610 R15: dffffc0000000000 FS: 0000000001a89880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000300 CR3: 00000000a7555000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rt6_fill_node+0xfe9/0x1f90 net/ipv6/route.c:5584 inet6_rt_notify+0x2ab/0x500 net/ipv6/route.c:6017 fib6_add_rt2node net/ipv6/ip6_fib.c:1246 [inline] fib6_add+0x203b/0x3bd0 net/ipv6/ip6_fib.c:1473 __ip6_ins_rt net/ipv6/route.c:1317 [inline] ip6_route_add+0x84/0x120 net/ipv6/route.c:3744 inet6_rtm_newroute+0x22f/0x2150 net/ipv6/route.c:5360 rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5563 netlink_rcv_skb+0x190/0x3a0 net/netlink/af_netlink.c:2470 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x786/0x940 net/netlink/af_netlink.c:1330 netlink_sendmsg+0xa57/0xd70 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg net/socket.c:671 [inline] ____sys_sendmsg+0x519/0x800 net/socket.c:2353 ___sys_sendmsg net/socket.c:2407 [inline] __sys_sendmsg+0x2b1/0x360 net/socket.c:2440 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x443ef9 Code: e8 8c 07 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 bb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd64ccd428 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443ef9 RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 RBP: 00007ffd64ccd430 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000b6f1 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace e62dc7d3de715e59 ]--- RIP: 0010:nexthop_is_blackhole+0x145/0x250 include/net/nexthop.h:240 Code: 4d fa 49 83 c6 10 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 39 f0 8c fa 49 8b 1e 48 83 eb 80 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 1c f0 8c fa 48 8b 1b e8 e4 4e 02 RSP: 0018:ffffc900061172b8 EFLAGS: 00010202 RAX: 0000000000000010 RBX: 0000000000000080 RCX: ffff888091444300 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff8727dfc7 R09: ffffed1012299e09 R10: ffffed1012299e09 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880919da280 R14: ffff8880a9576610 R15: dffffc0000000000 FS: 0000000001a89880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000300 CR3: 00000000a7555000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller(a)googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches

1 year, 10 months

2
2
0 / 0

INFO: rcu detected stall in exit_group

by syzbot

Hello, syzbot found the following issue on: HEAD commit: 34d4ddd3 Merge tag 'linux-kselftest-5.9-rc5' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=134173a5900000 kernel config: https://syzkaller.appspot.com/x/.config?x=a9075b36a6ae26c9 dashboard link: https://syzkaller.appspot.com/bug?extid=1a14a0f8ce1a06d4415f compiler: gcc (GCC) 10.1.0-syz 20200507 userspace arch: i386 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10c6642d900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=132d00fd900000 The issue was bisected to: commit 32021982a324dce93b4ae00c06213bf45fb319c8 Author: David Howells <dhowells(a)redhat.com> Date: Thu Nov 1 23:07:26 2018 +0000 hugetlbfs: Convert to fs_context bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16cc40be900000 final oops: https://syzkaller.appspot.com/x/report.txt?x=15cc40be900000 console output: https://syzkaller.appspot.com/x/log.txt?x=11cc40be900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1a14a0f8ce1a06d4415f(a)syzkaller.appspotmail.com Fixes: 32021982a324 ("hugetlbfs: Convert to fs_context") rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3551 at kernel/sched/core.c:3013 rq_unlock kernel/sched/sched.h:1326 [inline] WARNING: CPU: 0 PID: 3551 at kernel/sched/core.c:3013 try_invoke_on_locked_down_task+0x214/0x2c0 kernel/sched/core.c:3019 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 3551 Comm: syz-executor649 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 panic+0x347/0x7c0 kernel/panic.c:231 __warn.cold+0x20/0x46 kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:try_invoke_on_locked_down_task+0x214/0x2c0 kernel/sched/core.c:3013 Code: 45 31 f6 49 39 c0 74 3a 8b 74 24 38 49 8d 78 18 4c 89 04 24 e8 ad 9a 08 00 4c 8b 04 24 4c 89 c7 e8 01 40 a6 06 e9 29 ff ff ff <0f> 0b e9 86 fe ff ff 4c 89 ee 48 89 ef 41 ff d4 41 89 c6 e9 11 ff RSP: 0018:ffffc90000007bd8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 1ffff92000000f7d RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff81612ed0 RDI: ffff888099502240 RBP: ffff888099502240 R08: 0000000000000033 R09: ffffffff89bcb4a3 R10: 00000000000005a2 R11: 0000000000000001 R12: ffffffff81612ed0 R13: ffffc90000007d00 R14: ffff8880995025c0 R15: ffff8880ae636c00 rcu_print_task_stall kernel/rcu/tree_stall.h:267 [inline] print_other_cpu_stall kernel/rcu/tree_stall.h:475 [inline] check_cpu_stall kernel/rcu/tree_stall.h:634 [inline] rcu_pending kernel/rcu/tree.c:3637 [inline] rcu_sched_clock_irq.cold+0x92e/0xccd kernel/rcu/tree.c:2519 update_process_times+0x25/0xa0 kernel/time/timer.c:1710 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176 tick_sched_timer+0x1d1/0x2a0 kernel/time/tick-sched.c:1328 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x1d5/0xfc0 kernel/time/hrtimer.c:1588 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1650 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 </IRQ> __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] sysvec_apic_timer_interrupt+0xb2/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:770 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x4d/0x90 kernel/locking/spinlock.c:191 Code: 48 c7 c0 48 3c b6 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 3c 48 83 3d 62 07 bf 01 00 74 29 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 44 80 58 f9 65 8b 05 7d c9 0a 78 RSP: 0018:ffffc9000c997a20 EFLAGS: 00000282 RAX: 1ffffffff136c789 RBX: 0000000000000282 RCX: 1ffffffff15645e9 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000282 RBP: ffffffff8cb5e0e0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000017 R13: 0000000000000017 R14: dead000000000100 R15: dffffc0000000000 __debug_check_no_obj_freed lib/debugobjects.c:977 [inline] debug_check_no_obj_freed+0x20c/0x41c lib/debugobjects.c:998 free_pages_prepare mm/page_alloc.c:1214 [inline] __free_pages_ok+0x240/0xcd0 mm/page_alloc.c:1471 release_pages+0x5ec/0x17a0 mm/swap.c:881 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:242 [inline] tlb_flush_mmu mm/mmu_gather.c:249 [inline] tlb_finish_mmu+0x165/0x8c0 mm/mmu_gather.c:328 exit_mmap+0x2d1/0x530 mm/mmap.c:3185 __mmput+0x122/0x470 kernel/fork.c:1076 mmput+0x53/0x60 kernel/fork.c:1097 exit_mm kernel/exit.c:483 [inline] do_exit+0xa8b/0x29f0 kernel/exit.c:793 do_group_exit+0x125/0x310 kernel/exit.c:903 __do_sys_exit_group kernel/exit.c:914 [inline] __se_sys_exit_group kernel/exit.c:912 [inline] __ia32_sys_exit_group+0x3a/0x50 kernel/exit.c:912 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline] __do_fast_syscall_32+0x60/0x90 arch/x86/entry/common.c:137 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:160 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f84549 Code: Bad RIP value. RSP: 002b:00000000ffd39f7c EFLAGS: 00000292 ORIG_RAX: 00000000000000fc RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000080ed2b8 RDX: 0000000000000000 RSI: 00000000080d6f3c RDI: 00000000080ed2c0 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Shutting down cpus with NMI Kernel Offset: disabled Rebooting in 86400 seconds.. --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller(a)googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches

1 year, 10 months

2
2
0 / 0

INFO: rcu detected stall in security_file_open (3)

by syzbot

Hello, syzbot found the following issue on: HEAD commit: fb0155a0 Merge tag 'nfs-for-5.9-3' of git://git.linux-nfs... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10b007cf900000 kernel config: https://syzkaller.appspot.com/x/.config?x=41b736b7ce1b3ea4 dashboard link: https://syzkaller.appspot.com/bug?extid=d2b6e8cc299748fecf25 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1249c717900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1048d9e3900000 The issue was bisected to: commit c9d8f5f0692d5960ed50970ffe63756fb8f96cdb Author: Kirill Tkhai <ktkhai(a)virtuozzo.com> Date: Fri Nov 9 10:33:27 2018 +0000 fuse: Protect fi->nlookup with fi->lock bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11af769d900000 final oops: https://syzkaller.appspot.com/x/report.txt?x=13af769d900000 console output: https://syzkaller.appspot.com/x/log.txt?x=15af769d900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d2b6e8cc299748fecf25(a)syzkaller.appspotmail.com Fixes: c9d8f5f0692d ("fuse: Protect fi->nlookup with fi->lock") rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3922 at kernel/sched/core.c:3013 rq_unlock kernel/sched/sched.h:1326 [inline] WARNING: CPU: 0 PID: 3922 at kernel/sched/core.c:3013 try_invoke_on_locked_down_task+0x21d/0x2f0 kernel/sched/core.c:3019 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 3922 Comm: systemd-udevd Not tainted 5.9.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 panic+0x382/0x7fb kernel/panic.c:231 __warn.cold+0x20/0x4b kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:try_invoke_on_locked_down_task+0x21d/0x2f0 kernel/sched/core.c:3013 Code: 45 31 f6 49 39 c0 74 3a 8b 74 24 38 49 8d 78 18 4c 89 04 24 e8 a4 e7 08 00 4c 8b 04 24 4c 89 c7 e8 28 ab d6 06 e9 20 ff ff ff <0f> 0b e9 7d fe ff ff 4c 89 ee 48 89 ef 41 ff d4 41 89 c6 e9 08 ff RSP: 0018:ffffc90000007be0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 1ffff92000000f7e RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff8162da10 RDI: ffff8880a61a2440 RBP: ffff8880a61a2440 R08: 0000000000000033 R09: ffffffff8a05ae03 R10: 000000000000062e R11: 0000000000000001 R12: ffffffff8162da10 R13: ffffc90000007d08 R14: ffff8880a61a2440 R15: 0000000000000000 rcu_print_task_stall kernel/rcu/tree_stall.h:267 [inline] print_other_cpu_stall kernel/rcu/tree_stall.h:475 [inline] check_cpu_stall kernel/rcu/tree_stall.h:634 [inline] rcu_pending kernel/rcu/tree.c:3639 [inline] rcu_sched_clock_irq.cold+0x97e/0xdfd kernel/rcu/tree.c:2521 update_process_times+0x25/0xa0 kernel/time/timer.c:1710 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176 tick_sched_timer+0x1d1/0x2a0 kernel/time/tick-sched.c:1328 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x1d5/0xfc0 kernel/time/hrtimer.c:1588 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1650 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x147/0x5f0 arch/x86/kernel/apic/apic.c:1097 asm_call_irq_on_stack+0xf/0x20 </IRQ> __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline] run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline] sysvec_apic_timer_interrupt+0xb2/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x9/0x60 kernel/kcov.c:197 Code: 5d be 03 00 00 00 e9 76 af 49 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 48 8b 14 25 c0 fe 01 00 <65> 8b 05 e0 bf 8b 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 RSP: 0018:ffffc90000f075a8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffffffff838a0be7 RDX: ffff88809c62c4c0 RSI: ffff88809c62c4c0 RDI: 0000000000000005 RBP: ffff8880a601de80 R08: 0000000000000001 R09: ffffffff8d5f79c7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000183 R14: dffffc0000000000 R15: 0000000000000000 tomoyo_domain_quota_is_ok+0x31a/0x550 security/tomoyo/util.c:1070 tomoyo_supervisor+0x2f2/0xef0 security/tomoyo/common.c:2089 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_permission+0x270/0x3a0 security/tomoyo/file.c:573 tomoyo_check_open_permission+0x33e/0x380 security/tomoyo/file.c:777 tomoyo_file_open security/tomoyo/tomoyo.c:313 [inline] tomoyo_file_open+0xa3/0xd0 security/tomoyo/tomoyo.c:308 security_file_open+0x52/0x4f0 security/security.c:1574 do_dentry_open+0x358/0x11b0 fs/open.c:804 do_open fs/namei.c:3251 [inline] path_openat+0x1b9a/0x2730 fs/namei.c:3368 do_filp_open+0x17e/0x3c0 fs/namei.c:3395 do_sys_openat2+0x16d/0x420 fs/open.c:1168 do_sys_open fs/open.c:1184 [inline] __do_sys_open fs/open.c:1192 [inline] __se_sys_open fs/open.c:1188 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1188 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fb405960840 Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 RSP: 002b:00007fff26dc0bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fff26dc0c70 RCX: 00007fb405960840 RDX: 0000560daddc7fe3 RSI: 00000000000a0800 RDI: 0000560daede0670 RBP: 00007fff26dc1100 R08: 0000560daddc7670 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff26dc0d80 R13: 0000560daed2da60 R14: 0000560daedeeef0 R15: 00007fff26dc0c50 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller(a)googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches

1 year, 10 months

2
2
0 / 0

[PATCH 1/3] batctl: Switch active routing algo list to netlink

by Sven Eckelmann

The sysfs support is disabled by default in batman-adv since a while and will be removed in 2021. The generic netlink interface should be used instead. But the list of active routing algorithms was only available when batman-adv was build with sysfs support. Instead of walking through (not existing) sysfs entries, query the list of batadv interfaces via rtnl and use the already existing helpers to get the routing algorithm. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> --- routing_algo.c | 172 +++++++++++++++++++++++++++++++++++-------------- 1 file changed, 122 insertions(+), 50 deletions(-) diff --git a/routing_algo.c b/routing_algo.c index 7171c52..5fa360b 100644 --- a/routing_algo.c +++ b/routing_algo.c @@ -6,7 +6,6 @@ * License-Filename: LICENSES/preferred/GPL-2.0 */ -#include <dirent.h> #include <errno.h> #include <getopt.h> #include <netinet/if_ether.h> @@ -159,14 +158,130 @@ static int print_routing_algos(void) return err; } +static struct nla_policy link_policy[IFLA_MAX + 1] = { + [IFLA_IFNAME] = { .type = NLA_STRING, .maxlen = IFNAMSIZ }, +}; + +struct print_ra_interfaces_rtnl_arg { + uint8_t header_shown:1; +}; + +static int print_ra_interfaces_rtnl_parse(struct nl_msg *msg, void *arg) +{ + struct print_ra_interfaces_rtnl_arg *print_arg = arg; + struct nlattr *attrs[IFLA_MAX + 1]; + char algoname[256]; + struct ifinfomsg *ifm; + char *mesh_iface; + int ret; + + ifm = nlmsg_data(nlmsg_hdr(msg)); + ret = nlmsg_parse(nlmsg_hdr(msg), sizeof(*ifm), attrs, IFLA_MAX, + link_policy); + if (ret < 0) + goto err; + + if (!attrs[IFLA_IFNAME]) + goto err; + + mesh_iface = nla_get_string(attrs[IFLA_IFNAME]); + + ret = get_algoname_netlink(mesh_iface, algoname, sizeof(algoname)); + if (ret < 0) + goto err; + + if(!print_arg->header_shown) { + print_arg->header_shown = true; + printf("Active routing protocol configuration:\n"); + } + + printf(" * %s: %s\n", mesh_iface, algoname); + +err: + return NL_OK; +} + +static int print_ra_interfaces(void) +{ + struct print_ra_interfaces_rtnl_arg print_arg = {}; + + struct ifinfomsg rt_hdr = { + .ifi_family = IFLA_UNSPEC, + }; + struct nlattr *linkinfo; + struct nl_sock *sock; + struct nl_msg *msg; + struct nl_cb *cb; + int err = 0; + int ret; + + sock = nl_socket_alloc(); + if (!sock) + return -ENOMEM; + + ret = nl_connect(sock, NETLINK_ROUTE); + if (ret < 0) { + err = -ENOMEM; + goto err_free_sock; + } + + cb = nl_cb_alloc(NL_CB_DEFAULT); + if (!cb) { + err = -ENOMEM; + goto err_free_sock; + } + + nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_ra_interfaces_rtnl_parse, + &print_arg); + + msg = nlmsg_alloc_simple(RTM_GETLINK, NLM_F_REQUEST | NLM_F_DUMP); + if (!msg) { + err = -ENOMEM; + goto err_free_cb; + } + + ret = nlmsg_append(msg, &rt_hdr, sizeof(rt_hdr), NLMSG_ALIGNTO); + if (ret < 0) { + err = -ENOMEM; + goto err_free_msg; + } + + linkinfo = nla_nest_start(msg, IFLA_LINKINFO); + if (!linkinfo) { + err = -ENOMEM; + goto err_free_msg; + } + + ret = nla_put_string(msg, IFLA_INFO_KIND, "batadv"); + if (ret < 0) { + err = -ENOMEM; + goto err_free_msg; + } + nla_nest_end(msg, linkinfo); + + ret = nl_send_auto_complete(sock, msg); + if (ret < 0) + goto err_free_msg; + + nl_recvmsgs(sock, cb); + + if (print_arg.header_shown) + printf("\n"); + +err_free_msg: + nlmsg_free(msg); +err_free_cb: + nl_cb_put(cb); +err_free_sock: + nl_socket_free(sock); + + return err; +} + static int routing_algo(struct state *state __maybe_unused, int argc, char **argv) { - DIR *iface_base_dir; - struct dirent *iface_dir; int optchar; - char *path_buff; int res = EXIT_FAILURE; - int first_iface = 1; while ((optchar = getopt(argc, argv, "h")) != -1) { switch (optchar) { @@ -183,48 +298,10 @@ static int routing_algo(struct state *state __maybe_unused, int argc, char **arg if (argc == 2) { res = write_file(SYS_SELECTED_RA_PATH, "", argv[1], NULL); - goto out; - } - - path_buff = malloc(PATH_BUFF_LEN); - if (!path_buff) { - fprintf(stderr, "Error - could not allocate path buffer: out of memory ?\n"); - goto out; - } - - iface_base_dir = opendir(SYS_IFACE_PATH); - if (!iface_base_dir) { - fprintf(stderr, "Error - the directory '%s' could not be read: %s\n", - SYS_IFACE_PATH, strerror(errno)); - fprintf(stderr, "Is the batman-adv module loaded and sysfs mounted ?\n"); - goto free_buff; - } - - while ((iface_dir = readdir(iface_base_dir)) != NULL) { - snprintf(path_buff, PATH_BUFF_LEN, SYS_ROUTING_ALGO_FMT, iface_dir->d_name); - res = read_file("", path_buff, USE_READ_BUFF | SILENCE_ERRORS, 0, 0, 0); - if (res != EXIT_SUCCESS) - continue; - - if (line_ptr[strlen(line_ptr) - 1] == '\n') - line_ptr[strlen(line_ptr) - 1] = '\0'; - - if (first_iface) { - first_iface = 0; - printf("Active routing protocol configuration:\n"); - } - - printf(" * %s: %s\n", iface_dir->d_name, line_ptr); - - free(line_ptr); - line_ptr = NULL; + return EXIT_FAILURE; } - closedir(iface_base_dir); - free(path_buff); - - if (!first_iface) - printf("\n"); + print_ra_interfaces(); res = read_file("", SYS_SELECTED_RA_PATH, USE_READ_BUFF, 0, 0, 0); if (res != EXIT_SUCCESS) @@ -237,11 +314,6 @@ static int routing_algo(struct state *state __maybe_unused, int argc, char **arg print_routing_algos(); return EXIT_SUCCESS; - -free_buff: - free(path_buff); -out: - return res; } COMMAND(SUBCOMMAND, routing_algo, "ra", 0, NULL, -- 2.28.0

1 year, 11 months

1
2
0 / 0

[PATCH 1/2] alfred: Drop deprecated debugfs support

by Sven Eckelmann

The debugfs support is disabled by default in batman-adv since a while and will be removed in 2021. The generic netlink interface should be used instead. The alfred support for it should be removed with the same release as the removal in batman-adv. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> --- Makefile | 1 - README.rst | 7 +- batadv_query.c | 204 +------------------------------------------------ debugfs.c | 140 --------------------------------- debugfs.h | 25 ------ main.c | 4 - vis/Makefile | 1 - vis/debugfs.c | 1 - vis/debugfs.h | 1 - vis/vis.c | 167 +--------------------------------------- vis/vis.h | 1 - 11 files changed, 5 insertions(+), 547 deletions(-) delete mode 100644 debugfs.c delete mode 100644 debugfs.h delete mode 120000 vis/debugfs.c delete mode 120000 vis/debugfs.h diff --git a/Makefile b/Makefile index 2bfe18c..6268cb9 100755 --- a/Makefile +++ b/Makefile @@ -11,7 +11,6 @@ BINARY_NAME = alfred OBJ += batadv_query.o OBJ += batadv_querynl.o OBJ += client.o -OBJ += debugfs.o OBJ += hash.o OBJ += main.o OBJ += netlink.o diff --git a/README.rst b/README.rst index bf5fb05..2bc2119 100644 --- a/README.rst +++ b/README.rst @@ -290,7 +290,7 @@ Operations requiring special capabilities: * bind to device * creating the unix socket -* accessing the debugfs filesystem +* accessing the netlink interface The first operation can still be executed when the admin grants the special capability CAP_NET_RAW+CAP_NET_ADMIN to anyone executing the alfred binary. @@ -300,11 +300,6 @@ directory which can be accessed by the user:: $ sudo setcap cap_net_admin,cap_net_raw+ep alfred $ ./alfred -u alfred.sock -i eth0 -The user running alfred must still be in a group which is allowed to access -/sys/kernel/debugfs to correctly choose best neighbors for communication. -It is possible (but not recommended) to disable the neighbor -selection/prioritization using the parameter '-b none'. - License ======= diff --git a/batadv_query.c b/batadv_query.c index f758b42..66d3452 100644 --- a/batadv_query.c +++ b/batadv_query.c @@ -22,11 +22,6 @@ #include <sys/types.h> #include "batadv_querynl.h" -#include "debugfs.h" - -#define DEBUG_BATIF_PATH_FMT "%s/batman_adv/%s" -#define DEBUG_TRANSTABLE_GLOBAL "transtable_global" -#define DEBUG_ORIGINATORS "originators" static int enable_net_admin_capability(int enable) { @@ -135,36 +130,6 @@ int ipv4_to_mac(struct interface *interface, return 0; } -static int batadv_interface_check_debugfs(const char *mesh_iface) -{ - char full_path[MAX_PATH + 1]; - FILE *f; - - debugfs_make_path(DEBUG_BATIF_PATH_FMT "/" DEBUG_TRANSTABLE_GLOBAL, - mesh_iface, full_path, sizeof(full_path)); - f = fopen(full_path, "r"); - if (!f) { - fprintf(stderr, - "Could not find %s for interface %s. Make sure it is a valid batman-adv soft-interface\n", - DEBUG_TRANSTABLE_GLOBAL, mesh_iface); - return -1; - } - fclose(f); - - debugfs_make_path(DEBUG_BATIF_PATH_FMT "/" DEBUG_ORIGINATORS, - mesh_iface, full_path, sizeof(full_path)); - f = fopen(full_path, "r"); - if (!f) { - fprintf(stderr, - "Could not find %s for interface %s. Make sure it is a valid batman-adv soft-interface\n", - DEBUG_ORIGINATORS, mesh_iface); - return -1; - } - fclose(f); - - return 0; -} - int batadv_interface_check(const char *mesh_iface) { int ret; @@ -173,86 +138,9 @@ int batadv_interface_check(const char *mesh_iface) ret = batadv_interface_check_netlink(mesh_iface); enable_net_admin_capability(0); - if (ret == -EOPNOTSUPP) - ret = batadv_interface_check_debugfs(mesh_iface); - return ret; } -static int translate_mac_debugfs(const char *mesh_iface, - struct hashtable_t *tg_hash) -{ - enum { - tg_start, - tg_mac, - tg_via, - tg_originator, - } pos; - char full_path[MAX_PATH+1]; - struct ether_addr *mac_tmp; - struct ether_addr mac; - FILE *f = NULL; - size_t len = 0; - char *line = NULL; - char *input, *saveptr, *token; - int line_invalid; - - debugfs_make_path(DEBUG_BATIF_PATH_FMT "/" DEBUG_TRANSTABLE_GLOBAL, - mesh_iface, full_path, sizeof(full_path)); - - f = fopen(full_path, "r"); - if (!f) - return -EOPNOTSUPP; - - while (getline(&line, &len, f) != -1) { - line_invalid = 0; - pos = tg_start; - input = line; - - while ((token = strtok_r(input, " \t", &saveptr))) { - input = NULL; - - switch (pos) { - case tg_start: - if (strcmp(token, "*") != 0) - line_invalid = 1; - else - pos = tg_mac; - break; - case tg_mac: - mac_tmp = ether_aton(token); - if (!mac_tmp) { - line_invalid = 1; - } else { - memcpy(&mac, mac_tmp, sizeof(mac)); - pos = tg_via; - } - break; - case tg_via: - if (strcmp(token, "via") == 0) - pos = tg_originator; - break; - case tg_originator: - mac_tmp = ether_aton(token); - if (!mac_tmp) - line_invalid = 1; - else - tg_hash_add(tg_hash, &mac, mac_tmp); - break; - } - - if (line_invalid) - break; - } - } - - if (f) - fclose(f); - free(line); - - return 0; -} - static int tg_compare(void *d1, void *d2) { struct tg_entry *s1 = d1, *s2 = d2; @@ -285,19 +173,15 @@ static int tg_choose(void *d1, int size) struct hashtable_t *tg_hash_new(const char *mesh_iface) { struct hashtable_t *tg_hash; - int ret; tg_hash = hash_new(64, tg_compare, tg_choose); if (!tg_hash) return NULL; enable_net_admin_capability(1); - ret = translate_mac_netlink(mesh_iface, tg_hash); + translate_mac_netlink(mesh_iface, tg_hash); enable_net_admin_capability(0); - if (ret == -EOPNOTSUPP) - translate_mac_debugfs(mesh_iface, tg_hash); - return tg_hash; } @@ -341,86 +225,6 @@ struct ether_addr *translate_mac(struct hashtable_t *tg_hash, return &found->originator; } -static int get_tq_debugfs(const char *mesh_iface, struct hashtable_t *orig_hash) -{ - enum { - orig_mac, - orig_lastseen, - orig_tqstart, - orig_tqvalue, - } pos; - char full_path[MAX_PATH + 1]; - struct ether_addr *mac_tmp; - FILE *f = NULL; - size_t len = 0; - char *line = NULL; - char *input, *saveptr, *token; - int line_invalid; - uint8_t tq; - - debugfs_make_path(DEBUG_BATIF_PATH_FMT "/" DEBUG_ORIGINATORS, - mesh_iface, full_path, sizeof(full_path)); - - f = fopen(full_path, "r"); - if (!f) - return -EOPNOTSUPP; - - while (getline(&line, &len, f) != -1) { - line_invalid = 0; - pos = orig_mac; - input = line; - - while ((token = strtok_r(input, " \t", &saveptr))) { - input = NULL; - - switch (pos) { - case orig_mac: - mac_tmp = ether_aton(token); - if (!mac_tmp) - line_invalid = 1; - else - pos = orig_lastseen; - break; - case orig_lastseen: - pos = orig_tqstart; - break; - case orig_tqstart: - if (strlen(token) == 0) { - line_invalid = 1; - break; - } else if (token[0] != '(') { - line_invalid = 1; - break; - } else if (strlen(token) == 1) { - pos = orig_tqvalue; - break; - } - - token++; - /* fall through */ - case orig_tqvalue: - if (token[strlen(token) - 1] != ')') { - line_invalid = 1; - } else { - token[strlen(token) - 1] = '\0'; - tq = strtol(token, NULL, 10); - orig_hash_add(orig_hash, mac_tmp, tq); - } - break; - } - - if (line_invalid) - break; - } - } - - if (f) - fclose(f); - free(line); - - return 0; -} - static int orig_compare(void *d1, void *d2) { struct orig_entry *s1 = d1, *s2 = d2; @@ -453,19 +257,15 @@ static int orig_choose(void *d1, int size) struct hashtable_t *orig_hash_new(const char *mesh_iface) { struct hashtable_t *orig_hash; - int ret; orig_hash = hash_new(64, orig_compare, orig_choose); if (!orig_hash) return NULL; enable_net_admin_capability(1); - ret = get_tq_netlink(mesh_iface, orig_hash); + get_tq_netlink(mesh_iface, orig_hash); enable_net_admin_capability(0); - if (ret == -EOPNOTSUPP) - get_tq_debugfs(mesh_iface, orig_hash); - return orig_hash; } diff --git a/debugfs.c b/debugfs.c deleted file mode 100644 index 5a71d65..0000000 --- a/debugfs.c +++ /dev/null @@ -1,140 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2009 Clark Williams <williams(a)redhat.com> - * Copyright (C) 2009 Xiao Guangrong <xiaoguangrong(a)cn.fujitsu.com> - * - * License-Filename: LICENSES/preferred/GPL-2.0 - */ - -#include "debugfs.h" -#include <errno.h> -#include <stdio.h> -#include <string.h> -#include <sys/mount.h> -#include <sys/stat.h> -#include <sys/statfs.h> - -#ifndef DEBUGFS_MAGIC -#define DEBUGFS_MAGIC 0x64626720 -#endif - -static int debugfs_premounted; -static char debugfs_mountpoint[MAX_PATH+1]; - -static const char *debugfs_find_mountpoint(void); -static int debugfs_valid_mountpoint(const char *debugfs); - -static const char *debugfs_known_mountpoints[] = { - "/sys/kernel/debug/", - "/debug/", - NULL, -}; - -/* construct a full path to a debugfs element */ -int debugfs_make_path(const char *fmt, const char *mesh_iface, char *buffer, - int size) -{ - if (strlen(debugfs_mountpoint) == 0) { - buffer[0] = '\0'; - return -1; - } - - return snprintf(buffer, size, fmt, debugfs_mountpoint, mesh_iface); -} - -static int debugfs_found; - -/* find the path to the mounted debugfs */ -static const char *debugfs_find_mountpoint(void) -{ - const char **ptr; - char type[100]; - FILE *fp; - - if (debugfs_found) - return (const char *)debugfs_mountpoint; - - ptr = debugfs_known_mountpoints; - while (*ptr) { - if (debugfs_valid_mountpoint(*ptr) == 0) { - debugfs_found = 1; - strncpy(debugfs_mountpoint, *ptr, - sizeof(debugfs_mountpoint)); - debugfs_mountpoint[sizeof(debugfs_mountpoint) - 1] = 0; - return debugfs_mountpoint; - } - ptr++; - } - - /* give up and parse /proc/mounts */ - fp = fopen("/proc/mounts", "r"); - if (fp == NULL) { - perror("Error - can't open /proc/mounts for read"); - return NULL; - } - - while (fscanf(fp, "%*s %" - STR(MAX_PATH) - "s %99s %*s %*d %*d\n", - debugfs_mountpoint, type) == 2) { - if (strcmp(type, "debugfs") == 0) - break; - } - fclose(fp); - - if (strcmp(type, "debugfs") != 0) - return NULL; - - debugfs_found = 1; - - return debugfs_mountpoint; -} - -/* verify that a mountpoint is actually a debugfs instance */ - -static int debugfs_valid_mountpoint(const char *debugfs) -{ - struct statfs st_fs; - - if (statfs(debugfs, &st_fs) < 0) - return -ENOENT; - else if (st_fs.f_type != (long) DEBUGFS_MAGIC) - return -ENOENT; - - return 0; -} - - -int debugfs_valid_entry(const char *path) -{ - struct stat st; - - if (stat(path, &st)) - return -errno; - - return 0; -} - -/* mount the debugfs somewhere if it's not mounted */ - -char *debugfs_mount(const char *mountpoint) -{ - /* see if it's already mounted */ - if (debugfs_find_mountpoint()) { - debugfs_premounted = 1; - return debugfs_mountpoint; - } - - /* if not mounted and no argument */ - if (mountpoint == NULL) - mountpoint = "/sys/kernel/debug"; - - if (mount(NULL, mountpoint, "debugfs", 0, NULL) < 0) - return NULL; - - /* save the mountpoint */ - strncpy(debugfs_mountpoint, mountpoint, sizeof(debugfs_mountpoint)); - debugfs_mountpoint[sizeof(debugfs_mountpoint) - 1] = '\0'; - debugfs_found = 1; - - return debugfs_mountpoint; -} diff --git a/debugfs.h b/debugfs.h deleted file mode 100644 index 61384f9..0000000 --- a/debugfs.h +++ /dev/null @@ -1,25 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2009 Clark Williams <williams(a)redhat.com> - * Copyright (C) 2009 Xiao Guangrong <xiaoguangrong(a)cn.fujitsu.com> - * - * License-Filename: LICENSES/preferred/GPL-2.0 - */ - -#ifndef __DEBUGFS_H__ -#define __DEBUGFS_H__ - -#ifndef MAX_PATH -# define MAX_PATH 256 -#endif - -#ifndef STR -# define _STR(x) #x -# define STR(x) _STR(x) -#endif - -extern int debugfs_valid_entry(const char *path); -extern char *debugfs_mount(const char *mountpoint); -extern int debugfs_make_path(const char *fmt, const char *mesh_iface, - char *buffer, int size); - -#endif /* __DEBUGFS_H__ */ diff --git a/main.c b/main.c index b498d1e..5ae8187 100644 --- a/main.c +++ b/main.c @@ -18,7 +18,6 @@ #include <unistd.h> #endif #include "alfred.h" -#include "debugfs.h" #include "packet.h" #include "list.h" @@ -167,9 +166,6 @@ static struct globals *alfred_init(int argc, char *argv[]) {NULL, 0, NULL, 0}, }; - /* We need full capabilities to mount debugfs, so do that now */ - debugfs_mount(NULL); - ret = reduce_capabilities(); if (ret < 0) return NULL; diff --git a/vis/Makefile b/vis/Makefile index cfd0921..50c8efb 100755 --- a/vis/Makefile +++ b/vis/Makefile @@ -8,7 +8,6 @@ # batadv-vis build BINARY_NAME = batadv-vis -OBJ += debugfs.o OBJ += netlink.o OBJ += vis.o MANPAGE = man/batadv-vis.8 diff --git a/vis/debugfs.c b/vis/debugfs.c deleted file mode 120000 index 45fb24d..0000000 --- a/vis/debugfs.c +++ /dev/null @@ -1 +0,0 @@ -../debugfs.c \ No newline at end of file diff --git a/vis/debugfs.h b/vis/debugfs.h deleted file mode 120000 index 094e733..0000000 --- a/vis/debugfs.h +++ /dev/null @@ -1 +0,0 @@ -../debugfs.h \ No newline at end of file diff --git a/vis/vis.c b/vis/vis.c index 17e067e..b62359c 100644 --- a/vis/vis.c +++ b/vis/vis.c @@ -26,7 +26,6 @@ #include "batman_adv.h" #include "netlink.h" -#include "debugfs.h" #define IFACE_STATUS_LEN 256 @@ -78,25 +77,6 @@ static char *mac_to_str(uint8_t *mac) return macstr; } -static uint8_t *str_to_mac(char *str) -{ - static uint8_t mac[ETH_ALEN]; - int ret; - - if (!str) - return NULL; - - ret = sscanf(str, - "%02hhX:%02hhX:%02hhX:%02hhX:%02hhX:%02hhX", - &mac[0], &mac[1], &mac[2], - &mac[3], &mac[4], &mac[5]); - - if (ret != 6) - return NULL; - - return mac; -} - static int get_if_mac(char *ifname, uint8_t *mac) { struct ifreq ifr; @@ -274,7 +254,7 @@ static int parse_transtable_local_netlink_cb(struct nl_msg *msg, void *arg) return NL_OK; } -static int parse_transtable_local_netlink(struct globals *globals) +static int parse_transtable_local(struct globals *globals) { struct vis_netlink_opts opts = { .globals = globals, @@ -294,69 +274,6 @@ static int parse_transtable_local_netlink(struct globals *globals) return 0; } -static int parse_transtable_local_debugfs(struct globals *globals) -{ - char *fbuf; - char *lptr, *tptr; - char *temp1, *temp2; - int lnum, tnum; - uint8_t *mac; - struct vis_list_entry *v_entry; - char path[1024]; - - debugfs_make_path(DEBUG_BATIF_PATH_FMT "/" "transtable_local", globals->interface, path, sizeof(path)); - path[sizeof(path) - 1] = 0; - - fbuf = read_file(path); - if (!fbuf) - return -1; - - for (lptr = fbuf, lnum = 0; ; lptr = NULL, lnum++) { - lptr = strtok_r(lptr, "\n", &temp1); - if (!lptr) - break; - - if (lnum < 1) - continue; - - for (tptr = lptr, tnum = 0;; tptr = NULL, tnum++) { - tptr = strtok_r(tptr, "\t ", &temp2); - if (!tptr) - break; - if (tnum == 1) { - v_entry = malloc(sizeof(*v_entry)); - if (!v_entry) - continue; - - mac = str_to_mac(tptr); - if (!mac) { - free(v_entry); - continue; - } - - memcpy(v_entry->v.mac, mac, ETH_ALEN); - v_entry->v.ifindex = 255; - v_entry->v.qual = 0; - list_add_tail(&v_entry->list, &globals->entry_list); - } - } - } - free(fbuf); - - return 0; -} - -static int parse_transtable_local(struct globals *globals) -{ - int ret; - - ret = parse_transtable_local_netlink(globals); - if (ret != -EOPNOTSUPP) - return ret; - - return parse_transtable_local_debugfs(globals); -} - static void clear_lists(struct globals *globals) { struct vis_list_entry *v_entry, *v_entry_safe; @@ -693,7 +610,7 @@ static int parse_orig_list_netlink_cb(struct nl_msg *msg, void *arg) return NL_OK; } -static int parse_orig_list_netlink(struct globals *globals) +static int parse_orig_list(struct globals *globals) { struct vis_netlink_opts opts = { .globals = globals, @@ -712,84 +629,6 @@ static int parse_orig_list_netlink(struct globals *globals) return 0; } -static int parse_orig_list_debugfs(struct globals *globals) -{ - char *fbuf; - char *lptr, *tptr; - char *temp1, *temp2; - char *dest, *tq, *neigh, *iface; - int lnum, tnum, ifindex, tq_val; - uint8_t *mac; - char path[1024]; - struct vis_list_entry *v_entry; - - debugfs_make_path(DEBUG_BATIF_PATH_FMT "/" "originators", globals->interface, path, sizeof(path)); - fbuf = read_file(path); - if (!fbuf) - return -1; - - for (lptr = fbuf, lnum = 0; ; lptr = NULL, lnum++) { - lptr = strtok_r(lptr, "\n", &temp1); - if (!lptr) - break; - if (lnum < 2) - continue; - - for (tptr = lptr, tnum = 0;; tptr = NULL, tnum++) { - tptr = strtok_r(tptr, "\t []()", &temp2); - if (!tptr) - break; - switch (tnum) { - case 0: dest = tptr; break; - case 2: tq = tptr; break; - case 3: neigh = tptr; break; - case 4: iface = tptr; break; - default: break; - } - } - if (tnum > 4) { - if (strcmp(dest, neigh) == 0) { - tq_val = strtol(tq, NULL, 10); - if (tq_val < 1 || tq_val > 255) - continue; - - mac = str_to_mac(dest); - if (!mac) - continue; - - ifindex = get_if_index_byname(globals, iface); - if (ifindex < 0) - continue; - - v_entry = malloc(sizeof(*v_entry)); - if (!v_entry) - continue; - - memcpy(v_entry->v.mac, mac, ETH_ALEN); - v_entry->v.ifindex = ifindex; - v_entry->v.qual = tq_val; - list_add_tail(&v_entry->list, &globals->entry_list); - - } - } - - } - free(fbuf); - - return 0; -} - -static int parse_orig_list(struct globals *globals) -{ - int ret; - - ret = parse_orig_list_netlink(globals); - if (ret != -EOPNOTSUPP) - return ret; - - return parse_orig_list_debugfs(globals); -} - static int vis_publish_data(struct globals *globals) { int len, ret; @@ -1296,8 +1135,6 @@ static struct globals *vis_init(int argc, char *argv[]) static int vis_server(struct globals *globals) { - debugfs_mount(NULL); - globals->push = (struct alfred_push_data_v0 *) globals->buf; globals->vis_data = (struct vis_v1 *) (globals->buf + sizeof(*globals->push) + sizeof(struct alfred_data)); diff --git a/vis/vis.h b/vis/vis.h index 43d2974..bed6615 100644 --- a/vis/vis.h +++ b/vis/vis.h @@ -24,7 +24,6 @@ #define UPDATE_INTERVAL 10 #define SYS_IFACE_PATH "/sys/class/net" -#define DEBUG_BATIF_PATH_FMT "%s/batman_adv/%s" #define SYS_IFACE_STATUS_FMT SYS_IFACE_PATH"/%s/batman_adv/iface_status" -- 2.28.0

1 year, 11 months

1
1
0 / 0

[PATCH 1/3] batman-adv: Drop deprecated sysfs support

by Sven Eckelmann

The sysfs in batman-adv support was marked as deprecated by the commit ec3d75284c09 ("batman-adv: ABI: Mark sysfs files as deprecated") and scheduled for removal in 2021. Signed-off-by: Sven Eckelmann <sven(a)narfation.org> --- .../ABI/obsolete/sysfs-class-net-batman-adv | 32 - .../ABI/obsolete/sysfs-class-net-mesh | 110 -- MAINTAINERS | 2 - Makefile | 3 - README.external.rst | 1 - gen-compat-autoconf.sh | 1 - net/batman-adv/Kconfig | 11 - net/batman-adv/Makefile | 1 - net/batman-adv/bat_v.c | 9 - net/batman-adv/hard-interface.c | 16 +- net/batman-adv/hard-interface.h | 6 - net/batman-adv/soft-interface.c | 52 - net/batman-adv/soft-interface.h | 1 - net/batman-adv/sysfs.c | 1272 ----------------- net/batman-adv/sysfs.h | 93 -- net/batman-adv/types.h | 30 - 16 files changed, 1 insertion(+), 1639 deletions(-) delete mode 100644 Documentation/ABI/obsolete/sysfs-class-net-batman-adv delete mode 100644 Documentation/ABI/obsolete/sysfs-class-net-mesh delete mode 100644 net/batman-adv/sysfs.c delete mode 100644 net/batman-adv/sysfs.h diff --git a/Documentation/ABI/obsolete/sysfs-class-net-batman-adv b/Documentation/ABI/obsolete/sysfs-class-net-batman-adv deleted file mode 100644 index 5bdbc8d4..00000000 --- a/Documentation/ABI/obsolete/sysfs-class-net-batman-adv +++ /dev/null @@ -1,32 +0,0 @@ -This ABI is deprecated and will be removed after 2021. It is -replaced with the batadv generic netlink family. - -What: /sys/class/net/<iface>/batman-adv/elp_interval -Date: Feb 2014 -Contact: Linus Lüssing <linus.luessing(a)web.de> -Description: - Defines the interval in milliseconds in which batman - emits probing packets for neighbor sensing (ELP). - -What: /sys/class/net/<iface>/batman-adv/iface_status -Date: May 2010 -Contact: Marek Lindner <mareklindner(a)neomailbox.ch> -Description: - Indicates the status of <iface> as it is seen by batman. - -What: /sys/class/net/<iface>/batman-adv/mesh_iface -Date: May 2010 -Contact: Marek Lindner <mareklindner(a)neomailbox.ch> -Description: - The /sys/class/net/<iface>/batman-adv/mesh_iface file - displays the batman mesh interface this <iface> - currently is associated with. - -What: /sys/class/net/<iface>/batman-adv/throughput_override -Date: Feb 2014 -Contact: Antonio Quartulli <a(a)unstable.cc> -description: - Defines the throughput value to be used by B.A.T.M.A.N. V - when estimating the link throughput using this interface. - If the value is set to 0 then batman-adv will try to - estimate the throughput by itself. diff --git a/Documentation/ABI/obsolete/sysfs-class-net-mesh b/Documentation/ABI/obsolete/sysfs-class-net-mesh deleted file mode 100644 index 04c1a293..00000000 --- a/Documentation/ABI/obsolete/sysfs-class-net-mesh +++ /dev/null @@ -1,110 +0,0 @@ -This ABI is deprecated and will be removed after 2021. It is -replaced with the batadv generic netlink family. - -What: /sys/class/net/<mesh_iface>/mesh/aggregated_ogms -Date: May 2010 -Contact: Marek Lindner <mareklindner(a)neomailbox.ch> -Description: - Indicates whether the batman protocol messages of the - mesh <mesh_iface> shall be aggregated or not. - -What: /sys/class/net/<mesh_iface>/mesh/<vlan_subdir>/ap_isolation -Date: May 2011 -Contact: Antonio Quartulli <a(a)unstable.cc> -Description: - Indicates whether the data traffic going from a - wireless client to another wireless client will be - silently dropped. <vlan_subdir> is empty when referring - to the untagged lan. - -What: /sys/class/net/<mesh_iface>/mesh/bonding -Date: June 2010 -Contact: Simon Wunderlich <sw(a)simonwunderlich.de> -Description: - Indicates whether the data traffic going through the - mesh will be sent using multiple interfaces at the - same time (if available). - -What: /sys/class/net/<mesh_iface>/mesh/bridge_loop_avoidance -Date: November 2011 -Contact: Simon Wunderlich <sw(a)simonwunderlich.de> -Description: - Indicates whether the bridge loop avoidance feature - is enabled. This feature detects and avoids loops - between the mesh and devices bridged with the soft - interface <mesh_iface>. - -What: /sys/class/net/<mesh_iface>/mesh/fragmentation -Date: October 2010 -Contact: Andreas Langer <an.langer(a)gmx.de> -Description: - Indicates whether the data traffic going through the - mesh will be fragmented or silently discarded if the - packet size exceeds the outgoing interface MTU. - -What: /sys/class/net/<mesh_iface>/mesh/gw_bandwidth -Date: October 2010 -Contact: Marek Lindner <mareklindner(a)neomailbox.ch> -Description: - Defines the bandwidth which is propagated by this - node if gw_mode was set to 'server'. - -What: /sys/class/net/<mesh_iface>/mesh/gw_mode -Date: October 2010 -Contact: Marek Lindner <mareklindner(a)neomailbox.ch> -Description: - Defines the state of the gateway features. Can be - either 'off', 'client' or 'server'. - -What: /sys/class/net/<mesh_iface>/mesh/gw_sel_class -Date: October 2010 -Contact: Marek Lindner <mareklindner(a)neomailbox.ch> -Description: - Defines the selection criteria this node will use - to choose a gateway if gw_mode was set to 'client'. - -What: /sys/class/net/<mesh_iface>/mesh/hop_penalty -Date: Oct 2010 -Contact: Linus Lüssing <linus.luessing(a)web.de> -Description: - Defines the penalty which will be applied to an - originator message's tq-field on every hop. - -What: /sys/class/net/<mesh_iface>/mesh/isolation_mark -Date: Nov 2013 -Contact: Antonio Quartulli <a(a)unstable.cc> -Description: - Defines the isolation mark (and its bitmask) which - is used to classify clients as "isolated" by the - Extended Isolation feature. - -What: /sys/class/net/<mesh_iface>/mesh/multicast_mode -Date: Feb 2014 -Contact: Linus Lüssing <linus.luessing(a)web.de> -Description: - Indicates whether multicast optimizations are enabled - or disabled. If set to zero then all nodes in the - mesh are going to use classic flooding for any - multicast packet with no optimizations. - -What: /sys/class/net/<mesh_iface>/mesh/network_coding -Date: Nov 2012 -Contact: Martin Hundeboll <martin(a)hundeboll.net> -Description: - Controls whether Network Coding (using some magic - to send fewer wifi packets but still the same - content) is enabled or not. - -What: /sys/class/net/<mesh_iface>/mesh/orig_interval -Date: May 2010 -Contact: Marek Lindner <mareklindner(a)neomailbox.ch> -Description: - Defines the interval in milliseconds in which batman - sends its protocol messages. - -What: /sys/class/net/<mesh_iface>/mesh/routing_algo -Date: Dec 2011 -Contact: Marek Lindner <mareklindner(a)neomailbox.ch> -Description: - Defines the routing procotol this mesh instance - uses to find the optimal paths through the mesh. diff --git a/MAINTAINERS b/MAINTAINERS index 3748b727..967f575f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -10,8 +10,6 @@ Q: https://patchwork.open-mesh.org/project/batman/list/ B: https://www.open-mesh.org/projects/batman-adv/issues C: irc://chat.freenode.net/batman T: git https://git.open-mesh.org/linux-merge.git -F: Documentation/ABI/obsolete/sysfs-class-net-batman-adv -F: Documentation/ABI/obsolete/sysfs-class-net-mesh F: Documentation/networking/batman-adv.rst F: include/uapi/linux/batadv_packet.h F: include/uapi/linux/batman_adv.h diff --git a/Makefile b/Makefile index afdbc03c..5dfed62a 100644 --- a/Makefile +++ b/Makefile @@ -18,8 +18,6 @@ export CONFIG_BATMAN_ADV_DEBUGFS=n export CONFIG_BATMAN_ADV_MCAST=y # B.A.T.M.A.N network coding (catwoman): export CONFIG_BATMAN_ADV_NC=n -# B.A.T.M.A.N. sysfs support: -export CONFIG_BATMAN_ADV_SYSFS=n # B.A.T.M.A.N. tracing support: export CONFIG_BATMAN_ADV_TRACING=n @@ -65,7 +63,6 @@ BUILD_FLAGS := \ CONFIG_BATMAN_ADV_DAT=$(CONFIG_BATMAN_ADV_DAT) \ CONFIG_BATMAN_ADV_NC=$(CONFIG_BATMAN_ADV_NC) \ CONFIG_BATMAN_ADV_MCAST=$(CONFIG_BATMAN_ADV_MCAST) \ - CONFIG_BATMAN_ADV_SYSFS=$(CONFIG_BATMAN_ADV_SYSFS) \ CONFIG_BATMAN_ADV_TRACING=$(CONFIG_BATMAN_ADV_TRACING) \ CONFIG_BATMAN_ADV_BATMAN_V=$(CONFIG_BATMAN_ADV_BATMAN_V) \ INSTALL_MOD_DIR=updates/ diff --git a/README.external.rst b/README.external.rst index 328cdcfa..bb067c1b 100644 --- a/README.external.rst +++ b/README.external.rst @@ -50,7 +50,6 @@ module). Available options and their possible values are * ``CONFIG_BATMAN_ADV_DEBUGFS=[y|n*]`` (B.A.T.M.A.N. debugfs entries) * ``CONFIG_BATMAN_ADV_MCAST=[y*|n]`` (B.A.T.M.A.N. multicast optimizations) * ``CONFIG_BATMAN_ADV_NC=[y|n*]`` (B.A.T.M.A.N. Network Coding) - * ``CONFIG_BATMAN_ADV_SYSFS=[y|n*]`` (B.A.T.M.A.N. sysfs support) * ``CONFIG_BATMAN_ADV_TRACING=[y|n*]`` (B.A.T.M.A.N. tracing support) e.g., debugging can be enabled by:: diff --git a/gen-compat-autoconf.sh b/gen-compat-autoconf.sh index 0f95d140..126de947 100755 --- a/gen-compat-autoconf.sh +++ b/gen-compat-autoconf.sh @@ -47,7 +47,6 @@ gen_config 'CONFIG_BATMAN_ADV_DEBUG' ${CONFIG_BATMAN_ADV_DEBUG:="n"} >> "${TMP}" gen_config 'CONFIG_BATMAN_ADV_DEBUGFS' ${CONFIG_BATMAN_ADV_DEBUGFS:="n"} >> "${TMP}" gen_config 'CONFIG_BATMAN_ADV_MCAST' ${CONFIG_BATMAN_ADV_MCAST:="y"} >> "${TMP}" gen_config 'CONFIG_BATMAN_ADV_NC' ${CONFIG_BATMAN_ADV_NC:="n"} >> "${TMP}" -gen_config 'CONFIG_BATMAN_ADV_SYSFS' ${CONFIG_BATMAN_ADV_SYSFS:="n"} >> "${TMP}" gen_config 'CONFIG_BATMAN_ADV_TRACING' ${CONFIG_BATMAN_ADV_TRACING:="n"} >> "${TMP}" # only regenerate compat-autoconf.h when config was changed diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig index c762758a..84bbf72b 100644 --- a/net/batman-adv/Kconfig +++ b/net/batman-adv/Kconfig @@ -97,17 +97,6 @@ config BATMAN_ADV_DEBUG buffer. The output is controlled via the batadv netdev specific log_level setting. -config BATMAN_ADV_SYSFS - bool "batman-adv sysfs entries" - depends on BATMAN_ADV - help - Say Y here if you want to enable batman-adv device configuration and - status interface through sysfs attributes. It is replaced by the - batadv generic netlink family but still used by various userspace - tools and scripts. - - If unsure, say Y. - config BATMAN_ADV_TRACING bool "B.A.T.M.A.N. tracing support" depends on BATMAN_ADV diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile index daa49af7..306615ca 100644 --- a/net/batman-adv/Makefile +++ b/net/batman-adv/Makefile @@ -28,7 +28,6 @@ batman-adv-y += originator.o batman-adv-y += routing.o batman-adv-y += send.o batman-adv-y += soft-interface.o -batman-adv-$(CONFIG_BATMAN_ADV_SYSFS) += sysfs.o batman-adv-$(CONFIG_BATMAN_ADV_TRACING) += trace.o batman-adv-y += tp_meter.o batman-adv-y += translation-table.o diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c index e91d2c07..ee7a95aa 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -13,7 +13,6 @@ #include <linux/if_ether.h> #include <linux/init.h> #include <linux/jiffies.h> -#include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> #include <linux/minmax.h> @@ -686,13 +685,6 @@ static ssize_t batadv_v_store_sel_class(struct batadv_priv *bat_priv, return count; } -static ssize_t batadv_v_show_sel_class(struct batadv_priv *bat_priv, char *buff) -{ - u32 class = atomic_read(&bat_priv->gw.sel_class); - - return sprintf(buff, "%u.%u MBit\n", class / 10, class % 10); -} - /** * batadv_v_gw_throughput_get() - retrieve the GW-bandwidth for a given GW * @gw_node: the GW to retrieve the metric for @@ -1061,7 +1053,6 @@ static struct batadv_algo_ops batadv_batman_v __read_mostly = { .gw = { .init_sel_class = batadv_v_init_sel_class, .store_sel_class = batadv_v_store_sel_class, - .show_sel_class = batadv_v_show_sel_class, .get_best_gw_node = batadv_v_gw_get_best_gw_node, .is_eligible = batadv_v_gw_is_eligible, #ifdef CONFIG_BATMAN_ADV_DEBUGFS diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index a28fb9ab..d3546790 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -39,7 +39,6 @@ #include "originator.h" #include "send.h" #include "soft-interface.h" -#include "sysfs.h" #include "translation-table.h" /** @@ -886,13 +885,9 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, batadv_hardif_recalc_extra_skbroom(hard_iface->soft_iface); /* nobody uses this interface anymore */ - if (batadv_hardif_cnt(hard_iface->soft_iface) <= 1) { + if (batadv_hardif_cnt(hard_iface->soft_iface) <= 1) batadv_gw_check_client_stop(bat_priv); - if (autodel == BATADV_IF_CLEANUP_AUTO) - batadv_softif_destroy_sysfs(hard_iface->soft_iface); - } - hard_iface->soft_iface = NULL; batadv_hardif_put(hard_iface); @@ -905,7 +900,6 @@ static struct batadv_hard_iface * batadv_hardif_add_interface(struct net_device *net_dev) { struct batadv_hard_iface *hard_iface; - int ret; ASSERT_RTNL(); @@ -918,10 +912,6 @@ batadv_hardif_add_interface(struct net_device *net_dev) if (!hard_iface) goto release_dev; - ret = batadv_sysfs_add_hardif(&hard_iface->hardif_obj, net_dev); - if (ret) - goto free_if; - hard_iface->net_dev = net_dev; hard_iface->soft_iface = NULL; hard_iface->if_status = BATADV_IF_NOT_IN_USE; @@ -951,8 +941,6 @@ batadv_hardif_add_interface(struct net_device *net_dev) return hard_iface; -free_if: - kfree(hard_iface); release_dev: dev_put(net_dev); out: @@ -973,7 +961,6 @@ static void batadv_hardif_remove_interface(struct batadv_hard_iface *hard_iface) hard_iface->if_status = BATADV_IF_TO_BE_REMOVED; batadv_debugfs_del_hardif(hard_iface); - batadv_sysfs_del_hardif(&hard_iface->hardif_obj); batadv_hardif_put(hard_iface); } @@ -991,7 +978,6 @@ static int batadv_hard_if_event_softif(unsigned long event, switch (event) { case NETDEV_REGISTER: - batadv_sysfs_add_meshif(net_dev); bat_priv = netdev_priv(net_dev); batadv_softif_create_vlan(bat_priv, BATADV_NO_FLAGS); break; diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index b1855d9d..1ee45b61 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -42,12 +42,6 @@ enum batadv_hard_if_state { /** @BATADV_IF_TO_BE_ACTIVATED: interface is getting activated */ BATADV_IF_TO_BE_ACTIVATED, - - /** - * @BATADV_IF_I_WANT_YOU: interface is queued up (using sysfs) for being - * added as slave interface of a batman-adv soft interface - */ - BATADV_IF_I_WANT_YOU, }; /** diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 82e7ca88..33448a73 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -30,7 +30,6 @@ #include <linux/random.h> #include <linux/rculist.h> #include <linux/rcupdate.h> -#include <linux/rtnetlink.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/socket.h> @@ -51,7 +50,6 @@ #include "network-coding.h" #include "originator.h" #include "send.h" -#include "sysfs.h" #include "translation-table.h" /** @@ -574,7 +572,6 @@ struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) { struct batadv_softif_vlan *vlan; - int err; spin_lock_bh(&bat_priv->softif_vlan_list_lock); @@ -601,19 +598,6 @@ int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list); spin_unlock_bh(&bat_priv->softif_vlan_list_lock); - /* batadv_sysfs_add_vlan cannot be in the spinlock section due to the - * sleeping behavior of the sysfs functions and the fs_reclaim lock - */ - err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); - if (err) { - /* ref for the function */ - batadv_softif_vlan_put(vlan); - - /* ref for the list */ - batadv_softif_vlan_put(vlan); - return err; - } - /* add a new TT local entry. This one will be marked with the NOPURGE * flag */ @@ -641,7 +625,6 @@ static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr, vlan->vid, "vlan interface destroyed", false); - batadv_sysfs_del_vlan(bat_priv, vlan); batadv_softif_vlan_put(vlan); } @@ -661,7 +644,6 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, { struct batadv_priv *bat_priv = netdev_priv(dev); struct batadv_softif_vlan *vlan; - int ret; /* only 802.1Q vlans are supported. * batman-adv does not know how to handle other types @@ -681,17 +663,6 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, if (!vlan) return batadv_softif_create_vlan(bat_priv, vid); - /* recreate the sysfs object if it was already destroyed (and it should - * be since we received a kill_vid() for this vlan - */ - if (!vlan->kobj) { - ret = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); - if (ret) { - batadv_softif_vlan_put(vlan); - return ret; - } - } - /* add a new TT local entry. This one will be marked with the NOPURGE * flag. This must be added again, even if the vlan object already * exists, because the entry was deleted by kill_vid() @@ -1105,28 +1076,6 @@ struct net_device *batadv_softif_create(struct net *net, const char *name) return soft_iface; } -/** - * batadv_softif_destroy_sysfs() - deletion of batadv_soft_interface via sysfs - * @soft_iface: the to-be-removed batman-adv interface - */ -void batadv_softif_destroy_sysfs(struct net_device *soft_iface) -{ - struct batadv_priv *bat_priv = netdev_priv(soft_iface); - struct batadv_softif_vlan *vlan; - - ASSERT_RTNL(); - - /* destroy the "untagged" VLAN */ - vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); - if (vlan) { - batadv_softif_destroy_vlan(bat_priv, vlan); - batadv_softif_vlan_put(vlan); - } - - batadv_sysfs_del_meshif(soft_iface); - unregister_netdevice(soft_iface); -} - /** * batadv_softif_destroy_netlink() - deletion of batadv_soft_interface via * netlink @@ -1153,7 +1102,6 @@ static void batadv_softif_destroy_netlink(struct net_device *soft_iface, batadv_softif_vlan_put(vlan); } - batadv_sysfs_del_meshif(soft_iface); unregister_netdevice_queue(soft_iface, head); } diff --git a/net/batman-adv/soft-interface.h b/net/batman-adv/soft-interface.h index 534e08d6..74716d9c 100644 --- a/net/batman-adv/soft-interface.h +++ b/net/batman-adv/soft-interface.h @@ -20,7 +20,6 @@ void batadv_interface_rx(struct net_device *soft_iface, struct sk_buff *skb, int hdr_size, struct batadv_orig_node *orig_node); struct net_device *batadv_softif_create(struct net *net, const char *name); -void batadv_softif_destroy_sysfs(struct net_device *soft_iface); bool batadv_softif_is_valid(const struct net_device *net_dev); extern struct rtnl_link_ops batadv_link_ops; int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid); diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c deleted file mode 100644 index 0f962dcd..00000000 --- a/net/batman-adv/sysfs.c +++ /dev/null @@ -1,1272 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright (C) 2010-2020 B.A.T.M.A.N. contributors: - * - * Marek Lindner - */ - -#include "sysfs.h" -#include "main.h" - -#include <asm/current.h> -#include <linux/atomic.h> -#include <linux/compiler.h> -#include <linux/device.h> -#include <linux/errno.h> -#include <linux/gfp.h> -#include <linux/if.h> -#include <linux/if_vlan.h> -#include <linux/kernel.h> -#include <linux/kobject.h> -#include <linux/kref.h> -#include <linux/limits.h> -#include <linux/netdevice.h> -#include <linux/printk.h> -#include <linux/rculist.h> -#include <linux/rcupdate.h> -#include <linux/rtnetlink.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/stddef.h> -#include <linux/string.h> -#include <linux/stringify.h> -#include <linux/workqueue.h> -#include <uapi/linux/batadv_packet.h> -#include <uapi/linux/batman_adv.h> - -#include "bridge_loop_avoidance.h" -#include "distributed-arp-table.h" -#include "gateway_client.h" -#include "gateway_common.h" -#include "hard-interface.h" -#include "log.h" -#include "netlink.h" -#include "network-coding.h" -#include "soft-interface.h" - -/** - * batadv_sysfs_deprecated() - Log use of deprecated batadv sysfs access - * @attr: attribute which was accessed - */ -static void batadv_sysfs_deprecated(struct attribute *attr) -{ - pr_warn_ratelimited(DEPRECATED "%s (pid %d) Use of sysfs file \"%s\".\nUse batadv genl family instead", - current->comm, task_pid_nr(current), attr->name); -} - -static struct net_device *batadv_kobj_to_netdev(struct kobject *obj) -{ - struct device *dev = container_of(obj->parent, struct device, kobj); - - return to_net_dev(dev); -} - -static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(obj); - - return netdev_priv(net_dev); -} - -/** - * batadv_vlan_kobj_to_batpriv() - convert a vlan kobj in the associated batpriv - * @obj: kobject to covert - * - * Return: the associated batadv_priv struct. - */ -static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj) -{ - /* VLAN specific attributes are located in the root sysfs folder if they - * refer to the untagged VLAN.. - */ - if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR, obj->name)) - return batadv_kobj_to_batpriv(obj); - - /* ..while the attributes for the tagged vlans are located in - * the in the corresponding "vlan%VID" subfolder - */ - return batadv_kobj_to_batpriv(obj->parent); -} - -/** - * batadv_kobj_to_vlan() - convert a kobj in the associated softif_vlan struct - * @bat_priv: the bat priv with all the soft interface information - * @obj: kobject to covert - * - * Return: the associated softif_vlan struct if found, NULL otherwise. - */ -static struct batadv_softif_vlan * -batadv_kobj_to_vlan(struct batadv_priv *bat_priv, struct kobject *obj) -{ - struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; - - rcu_read_lock(); - hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { - if (vlan_tmp->kobj != obj) - continue; - - if (!kref_get_unless_zero(&vlan_tmp->refcount)) - continue; - - vlan = vlan_tmp; - break; - } - rcu_read_unlock(); - - return vlan; -} - -/* Use this, if you have customized show and store functions for vlan attrs */ -#define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \ -struct batadv_attribute batadv_attr_vlan_##_name = { \ - .attr = {.name = __stringify(_name), \ - .mode = _mode }, \ - .show = _show, \ - .store = _store, \ -} - -/* Use this, if you have customized show and store functions */ -#define BATADV_ATTR(_name, _mode, _show, _store) \ -struct batadv_attribute batadv_attr_##_name = { \ - .attr = {.name = __stringify(_name), \ - .mode = _mode }, \ - .show = _show, \ - .store = _store, \ -} - -#define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ -ssize_t batadv_store_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff, \ - size_t count) \ -{ \ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ - struct batadv_priv *bat_priv = netdev_priv(net_dev); \ - ssize_t length; \ - \ - batadv_sysfs_deprecated(attr); \ - length = __batadv_store_bool_attr(buff, count, _post_func, attr,\ - &bat_priv->_name, net_dev); \ - \ - batadv_netlink_notify_mesh(bat_priv); \ - \ - return length; \ -} - -#define BATADV_ATTR_SIF_SHOW_BOOL(_name) \ -ssize_t batadv_show_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff) \ -{ \ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ - \ - batadv_sysfs_deprecated(attr); \ - return sprintf(buff, "%s\n", \ - atomic_read(&bat_priv->_name) == 0 ? \ - "disabled" : "enabled"); \ -} \ - -/* Use this, if you are going to turn a [name] in the soft-interface - * (bat_priv) on or off - */ -#define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \ - static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \ - static BATADV_ATTR_SIF_SHOW_BOOL(_name) \ - static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ - batadv_store_##_name) - -#define BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ -ssize_t batadv_store_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff, \ - size_t count) \ -{ \ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ - struct batadv_priv *bat_priv = netdev_priv(net_dev); \ - ssize_t length; \ - \ - batadv_sysfs_deprecated(attr); \ - length = __batadv_store_uint_attr(buff, count, _min, _max, \ - _post_func, attr, \ - &bat_priv->_var, net_dev, \ - NULL); \ - \ - batadv_netlink_notify_mesh(bat_priv); \ - \ - return length; \ -} - -#define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ -ssize_t batadv_show_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff) \ -{ \ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ - \ - batadv_sysfs_deprecated(attr); \ - return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \ -} \ - -/* Use this, if you are going to set [name] in the soft-interface - * (bat_priv) to an unsigned integer value - */ -#define BATADV_ATTR_SIF_UINT(_name, _var, _mode, _min, _max, _post_func)\ - static BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func)\ - static BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ - static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ - batadv_store_##_name) - -#define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ -ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff, \ - size_t count) \ -{ \ - struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ - struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ - kobj); \ - size_t res = __batadv_store_bool_attr(buff, count, _post_func, \ - attr, &vlan->_name, \ - bat_priv->soft_iface); \ - \ - batadv_sysfs_deprecated(attr); \ - if (vlan->vid) \ - batadv_netlink_notify_vlan(bat_priv, vlan); \ - else \ - batadv_netlink_notify_mesh(bat_priv); \ - \ - batadv_softif_vlan_put(vlan); \ - return res; \ -} - -#define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ -ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff) \ -{ \ - struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\ - struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \ - kobj); \ - size_t res = sprintf(buff, "%s\n", \ - atomic_read(&vlan->_name) == 0 ? \ - "disabled" : "enabled"); \ - \ - batadv_sysfs_deprecated(attr); \ - batadv_softif_vlan_put(vlan); \ - return res; \ -} - -/* Use this, if you are going to turn a [name] in the vlan struct on or off */ -#define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \ - static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \ - static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \ - static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \ - batadv_store_vlan_##_name) - -#define BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, _max, _post_func) \ -ssize_t batadv_store_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff, \ - size_t count) \ -{ \ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ - struct batadv_hard_iface *hard_iface; \ - struct batadv_priv *bat_priv; \ - ssize_t length; \ - \ - batadv_sysfs_deprecated(attr); \ - hard_iface = batadv_hardif_get_by_netdev(net_dev); \ - if (!hard_iface) \ - return 0; \ - \ - length = __batadv_store_uint_attr(buff, count, _min, _max, \ - _post_func, attr, \ - &hard_iface->_var, \ - hard_iface->soft_iface, \ - net_dev); \ - \ - if (hard_iface->soft_iface) { \ - bat_priv = netdev_priv(hard_iface->soft_iface); \ - batadv_netlink_notify_hardif(bat_priv, hard_iface); \ - } \ - \ - batadv_hardif_put(hard_iface); \ - return length; \ -} - -#define BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ -ssize_t batadv_show_##_name(struct kobject *kobj, \ - struct attribute *attr, char *buff) \ -{ \ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \ - struct batadv_hard_iface *hard_iface; \ - ssize_t length; \ - \ - batadv_sysfs_deprecated(attr); \ - hard_iface = batadv_hardif_get_by_netdev(net_dev); \ - if (!hard_iface) \ - return 0; \ - \ - length = sprintf(buff, "%i\n", atomic_read(&hard_iface->_var)); \ - \ - batadv_hardif_put(hard_iface); \ - return length; \ -} - -/* Use this, if you are going to set [name] in hard_iface to an - * unsigned integer value - */ -#define BATADV_ATTR_HIF_UINT(_name, _var, _mode, _min, _max, _post_func)\ - static BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, \ - _max, _post_func) \ - static BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ - static BATADV_ATTR(_name, _mode, batadv_show_##_name, \ - batadv_store_##_name) - -static int batadv_store_bool_attr(char *buff, size_t count, - struct net_device *net_dev, - const char *attr_name, atomic_t *attr, - bool *changed) -{ - int enabled = -1; - - *changed = false; - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - if ((strncmp(buff, "1", 2) == 0) || - (strncmp(buff, "enable", 7) == 0) || - (strncmp(buff, "enabled", 8) == 0)) - enabled = 1; - - if ((strncmp(buff, "0", 2) == 0) || - (strncmp(buff, "disable", 8) == 0) || - (strncmp(buff, "disabled", 9) == 0)) - enabled = 0; - - if (enabled < 0) { - batadv_info(net_dev, "%s: Invalid parameter received: %s\n", - attr_name, buff); - return -EINVAL; - } - - if (atomic_read(attr) == enabled) - return count; - - batadv_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name, - atomic_read(attr) == 1 ? "enabled" : "disabled", - enabled == 1 ? "enabled" : "disabled"); - - *changed = true; - - atomic_set(attr, (unsigned int)enabled); - return count; -} - -static inline ssize_t -__batadv_store_bool_attr(char *buff, size_t count, - void (*post_func)(struct net_device *), - struct attribute *attr, - atomic_t *attr_store, struct net_device *net_dev) -{ - bool changed; - int ret; - - ret = batadv_store_bool_attr(buff, count, net_dev, attr->name, - attr_store, &changed); - if (post_func && changed) - post_func(net_dev); - - return ret; -} - -static int batadv_store_uint_attr(const char *buff, size_t count, - struct net_device *net_dev, - struct net_device *slave_dev, - const char *attr_name, - unsigned int min, unsigned int max, - atomic_t *attr) -{ - char ifname[IFNAMSIZ + 3] = ""; - unsigned long uint_val; - int ret; - - ret = kstrtoul(buff, 10, &uint_val); - if (ret) { - batadv_info(net_dev, "%s: Invalid parameter received: %s\n", - attr_name, buff); - return -EINVAL; - } - - if (uint_val < min) { - batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n", - attr_name, uint_val, min); - return -EINVAL; - } - - if (uint_val > max) { - batadv_info(net_dev, "%s: Value is too big: %lu max: %u\n", - attr_name, uint_val, max); - return -EINVAL; - } - - if (atomic_read(attr) == uint_val) - return count; - - if (slave_dev) - snprintf(ifname, sizeof(ifname), "%s: ", slave_dev->name); - - batadv_info(net_dev, "%s: %sChanging from: %i to: %lu\n", - attr_name, ifname, atomic_read(attr), uint_val); - - atomic_set(attr, uint_val); - return count; -} - -static ssize_t __batadv_store_uint_attr(const char *buff, size_t count, - int min, int max, - void (*post_func)(struct net_device *), - const struct attribute *attr, - atomic_t *attr_store, - struct net_device *net_dev, - struct net_device *slave_dev) -{ - int ret; - - ret = batadv_store_uint_attr(buff, count, net_dev, slave_dev, - attr->name, min, max, attr_store); - if (post_func && ret) - post_func(net_dev); - - return ret; -} - -static ssize_t batadv_show_bat_algo(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - - batadv_sysfs_deprecated(attr); - return sprintf(buff, "%s\n", bat_priv->algo_ops->name); -} - -static void batadv_post_gw_reselect(struct net_device *net_dev) -{ - struct batadv_priv *bat_priv = netdev_priv(net_dev); - - batadv_gw_reselect(bat_priv); -} - -static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr, - char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - int bytes_written; - - batadv_sysfs_deprecated(attr); - - /* GW mode is not available if the routing algorithm in use does not - * implement the GW API - */ - if (!bat_priv->algo_ops->gw.get_best_gw_node || - !bat_priv->algo_ops->gw.is_eligible) - return -ENOENT; - - switch (atomic_read(&bat_priv->gw.mode)) { - case BATADV_GW_MODE_CLIENT: - bytes_written = sprintf(buff, "%s\n", - BATADV_GW_MODE_CLIENT_NAME); - break; - case BATADV_GW_MODE_SERVER: - bytes_written = sprintf(buff, "%s\n", - BATADV_GW_MODE_SERVER_NAME); - break; - default: - bytes_written = sprintf(buff, "%s\n", - BATADV_GW_MODE_OFF_NAME); - break; - } - - return bytes_written; -} - -static ssize_t batadv_store_gw_mode(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_priv *bat_priv = netdev_priv(net_dev); - char *curr_gw_mode_str; - int gw_mode_tmp = -1; - - batadv_sysfs_deprecated(attr); - - /* toggling GW mode is allowed only if the routing algorithm in use - * provides the GW API - */ - if (!bat_priv->algo_ops->gw.get_best_gw_node || - !bat_priv->algo_ops->gw.is_eligible) - return -EINVAL; - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - if (strncmp(buff, BATADV_GW_MODE_OFF_NAME, - strlen(BATADV_GW_MODE_OFF_NAME)) == 0) - gw_mode_tmp = BATADV_GW_MODE_OFF; - - if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME, - strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0) - gw_mode_tmp = BATADV_GW_MODE_CLIENT; - - if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME, - strlen(BATADV_GW_MODE_SERVER_NAME)) == 0) - gw_mode_tmp = BATADV_GW_MODE_SERVER; - - if (gw_mode_tmp < 0) { - batadv_info(net_dev, - "Invalid parameter for 'gw mode' setting received: %s\n", - buff); - return -EINVAL; - } - - if (atomic_read(&bat_priv->gw.mode) == gw_mode_tmp) - return count; - - switch (atomic_read(&bat_priv->gw.mode)) { - case BATADV_GW_MODE_CLIENT: - curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME; - break; - case BATADV_GW_MODE_SERVER: - curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME; - break; - default: - curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME; - break; - } - - batadv_info(net_dev, "Changing gw mode from: %s to: %s\n", - curr_gw_mode_str, buff); - - /* Invoking batadv_gw_reselect() is not enough to really de-select the - * current GW. It will only instruct the gateway client code to perform - * a re-election the next time that this is needed. - * - * When gw client mode is being switched off the current GW must be - * de-selected explicitly otherwise no GW_ADD uevent is thrown on - * client mode re-activation. This is operation is performed in - * batadv_gw_check_client_stop(). - */ - batadv_gw_reselect(bat_priv); - /* always call batadv_gw_check_client_stop() before changing the gateway - * state - */ - batadv_gw_check_client_stop(bat_priv); - atomic_set(&bat_priv->gw.mode, (unsigned int)gw_mode_tmp); - batadv_gw_tvlv_container_update(bat_priv); - - batadv_netlink_notify_mesh(bat_priv); - - return count; -} - -static ssize_t batadv_show_gw_sel_class(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - - batadv_sysfs_deprecated(attr); - - /* GW selection class is not available if the routing algorithm in use - * does not implement the GW API - */ - if (!bat_priv->algo_ops->gw.get_best_gw_node || - !bat_priv->algo_ops->gw.is_eligible) - return -ENOENT; - - if (bat_priv->algo_ops->gw.show_sel_class) - return bat_priv->algo_ops->gw.show_sel_class(bat_priv, buff); - - return sprintf(buff, "%i\n", atomic_read(&bat_priv->gw.sel_class)); -} - -static ssize_t batadv_store_gw_sel_class(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - ssize_t length; - - batadv_sysfs_deprecated(attr); - - /* setting the GW selection class is allowed only if the routing - * algorithm in use implements the GW API - */ - if (!bat_priv->algo_ops->gw.get_best_gw_node || - !bat_priv->algo_ops->gw.is_eligible) - return -EINVAL; - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - if (bat_priv->algo_ops->gw.store_sel_class) - return bat_priv->algo_ops->gw.store_sel_class(bat_priv, buff, - count); - - length = __batadv_store_uint_attr(buff, count, 1, BATADV_TQ_MAX_VALUE, - batadv_post_gw_reselect, attr, - &bat_priv->gw.sel_class, - bat_priv->soft_iface, NULL); - - batadv_netlink_notify_mesh(bat_priv); - - return length; -} - -static ssize_t batadv_show_gw_bwidth(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - u32 down, up; - - batadv_sysfs_deprecated(attr); - - down = atomic_read(&bat_priv->gw.bandwidth_down); - up = atomic_read(&bat_priv->gw.bandwidth_up); - - return sprintf(buff, "%u.%u/%u.%u MBit\n", down / 10, - down % 10, up / 10, up % 10); -} - -static ssize_t batadv_store_gw_bwidth(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - ssize_t length; - - batadv_sysfs_deprecated(attr); - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - length = batadv_gw_bandwidth_set(net_dev, buff, count); - - batadv_netlink_notify_mesh(bat_priv); - - return length; -} - -/** - * batadv_show_isolation_mark() - print the current isolation mark/mask - * @kobj: kobject representing the private mesh sysfs directory - * @attr: the batman-adv attribute the user is interacting with - * @buff: the buffer that will contain the data to send back to the user - * - * Return: the number of bytes written into 'buff' on success or a negative - * error code in case of failure - */ -static ssize_t batadv_show_isolation_mark(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - - batadv_sysfs_deprecated(attr); - return sprintf(buff, "%#.8x/%#.8x\n", bat_priv->isolation_mark, - bat_priv->isolation_mark_mask); -} - -/** - * batadv_store_isolation_mark() - parse and store the isolation mark/mask - * entered by the user - * @kobj: kobject representing the private mesh sysfs directory - * @attr: the batman-adv attribute the user is interacting with - * @buff: the buffer containing the user data - * @count: number of bytes in the buffer - * - * Return: 'count' on success or a negative error code in case of failure - */ -static ssize_t batadv_store_isolation_mark(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_priv *bat_priv = netdev_priv(net_dev); - u32 mark, mask; - char *mask_ptr; - - batadv_sysfs_deprecated(attr); - - /* parse the mask if it has been specified, otherwise assume the mask is - * the biggest possible - */ - mask = 0xFFFFFFFF; - mask_ptr = strchr(buff, '/'); - if (mask_ptr) { - *mask_ptr = '\0'; - mask_ptr++; - - /* the mask must be entered in hex base as it is going to be a - * bitmask and not a prefix length - */ - if (kstrtou32(mask_ptr, 16, &mask) < 0) - return -EINVAL; - } - - /* the mark can be entered in any base */ - if (kstrtou32(buff, 0, &mark) < 0) - return -EINVAL; - - bat_priv->isolation_mark_mask = mask; - /* erase bits not covered by the mask */ - bat_priv->isolation_mark = mark & bat_priv->isolation_mark_mask; - - batadv_info(net_dev, - "New skb mark for extended isolation: %#.8x/%#.8x\n", - bat_priv->isolation_mark, bat_priv->isolation_mark_mask); - - batadv_netlink_notify_mesh(bat_priv); - - return count; -} - -BATADV_ATTR_SIF_BOOL(aggregated_ogms, 0644, NULL); -BATADV_ATTR_SIF_BOOL(bonding, 0644, NULL); -#ifdef CONFIG_BATMAN_ADV_BLA -BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, 0644, batadv_bla_status_update); -#endif -#ifdef CONFIG_BATMAN_ADV_DAT -BATADV_ATTR_SIF_BOOL(distributed_arp_table, 0644, batadv_dat_status_update); -#endif -BATADV_ATTR_SIF_BOOL(fragmentation, 0644, batadv_update_min_mtu); -static BATADV_ATTR(routing_algo, 0444, batadv_show_bat_algo, NULL); -static BATADV_ATTR(gw_mode, 0644, batadv_show_gw_mode, batadv_store_gw_mode); -BATADV_ATTR_SIF_UINT(orig_interval, orig_interval, 0644, 2 * BATADV_JITTER, - INT_MAX, NULL); -BATADV_ATTR_SIF_UINT(hop_penalty, hop_penalty, 0644, 0, BATADV_TQ_MAX_VALUE, - NULL); -static BATADV_ATTR(gw_sel_class, 0644, batadv_show_gw_sel_class, - batadv_store_gw_sel_class); -static BATADV_ATTR(gw_bandwidth, 0644, batadv_show_gw_bwidth, - batadv_store_gw_bwidth); -#ifdef CONFIG_BATMAN_ADV_MCAST -BATADV_ATTR_SIF_BOOL(multicast_mode, 0644, NULL); -#endif -#ifdef CONFIG_BATMAN_ADV_DEBUG -BATADV_ATTR_SIF_UINT(log_level, log_level, 0644, 0, BATADV_DBG_ALL, NULL); -#endif -#ifdef CONFIG_BATMAN_ADV_NC -BATADV_ATTR_SIF_BOOL(network_coding, 0644, batadv_nc_status_update); -#endif -static BATADV_ATTR(isolation_mark, 0644, batadv_show_isolation_mark, - batadv_store_isolation_mark); - -static struct batadv_attribute *batadv_mesh_attrs[] = { - &batadv_attr_aggregated_ogms, - &batadv_attr_bonding, -#ifdef CONFIG_BATMAN_ADV_BLA - &batadv_attr_bridge_loop_avoidance, -#endif -#ifdef CONFIG_BATMAN_ADV_DAT - &batadv_attr_distributed_arp_table, -#endif -#ifdef CONFIG_BATMAN_ADV_MCAST - &batadv_attr_multicast_mode, -#endif - &batadv_attr_fragmentation, - &batadv_attr_routing_algo, - &batadv_attr_gw_mode, - &batadv_attr_orig_interval, - &batadv_attr_hop_penalty, - &batadv_attr_gw_sel_class, - &batadv_attr_gw_bandwidth, -#ifdef CONFIG_BATMAN_ADV_DEBUG - &batadv_attr_log_level, -#endif -#ifdef CONFIG_BATMAN_ADV_NC - &batadv_attr_network_coding, -#endif - &batadv_attr_isolation_mark, - NULL, -}; - -BATADV_ATTR_VLAN_BOOL(ap_isolation, 0644, NULL); - -/* array of vlan specific sysfs attributes */ -static struct batadv_attribute *batadv_vlan_attrs[] = { - &batadv_attr_vlan_ap_isolation, - NULL, -}; - -/** - * batadv_sysfs_add_meshif() - Add soft interface specific sysfs entries - * @dev: netdev struct of the soft interface - * - * Return: 0 on success or negative error number in case of failure - */ -int batadv_sysfs_add_meshif(struct net_device *dev) -{ - struct kobject *batif_kobject = &dev->dev.kobj; - struct batadv_priv *bat_priv = netdev_priv(dev); - struct batadv_attribute **bat_attr; - int err; - - bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR, - batif_kobject); - if (!bat_priv->mesh_obj) { - batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, - BATADV_SYSFS_IF_MESH_SUBDIR); - goto out; - } - - for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) { - err = sysfs_create_file(bat_priv->mesh_obj, - &((*bat_attr)->attr)); - if (err) { - batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", - dev->name, BATADV_SYSFS_IF_MESH_SUBDIR, - ((*bat_attr)->attr).name); - goto rem_attr; - } - } - - return 0; - -rem_attr: - for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); - - kobject_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); - kobject_del(bat_priv->mesh_obj); - kobject_put(bat_priv->mesh_obj); - bat_priv->mesh_obj = NULL; -out: - return -ENOMEM; -} - -/** - * batadv_sysfs_del_meshif() - Remove soft interface specific sysfs entries - * @dev: netdev struct of the soft interface - */ -void batadv_sysfs_del_meshif(struct net_device *dev) -{ - struct batadv_priv *bat_priv = netdev_priv(dev); - struct batadv_attribute **bat_attr; - - for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); - - kobject_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); - kobject_del(bat_priv->mesh_obj); - kobject_put(bat_priv->mesh_obj); - bat_priv->mesh_obj = NULL; -} - -/** - * batadv_sysfs_add_vlan() - add all the needed sysfs objects for the new vlan - * @dev: netdev of the mesh interface - * @vlan: private data of the newly added VLAN interface - * - * Return: 0 on success and -ENOMEM if any of the structure allocations fails. - */ -int batadv_sysfs_add_vlan(struct net_device *dev, - struct batadv_softif_vlan *vlan) -{ - char vlan_subdir[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX) + 5]; - struct batadv_priv *bat_priv = netdev_priv(dev); - struct batadv_attribute **bat_attr; - int err; - - if (vlan->vid & BATADV_VLAN_HAS_TAG) { - sprintf(vlan_subdir, BATADV_SYSFS_VLAN_SUBDIR_PREFIX "%hu", - vlan->vid & VLAN_VID_MASK); - - vlan->kobj = kobject_create_and_add(vlan_subdir, - bat_priv->mesh_obj); - if (!vlan->kobj) { - batadv_err(dev, "Can't add sysfs directory: %s/%s\n", - dev->name, vlan_subdir); - goto out; - } - } else { - /* the untagged LAN uses the root folder to store its "VLAN - * specific attributes" - */ - vlan->kobj = bat_priv->mesh_obj; - kobject_get(bat_priv->mesh_obj); - } - - for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) { - err = sysfs_create_file(vlan->kobj, - &((*bat_attr)->attr)); - if (err) { - batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", - dev->name, vlan_subdir, - ((*bat_attr)->attr).name); - goto rem_attr; - } - } - - return 0; - -rem_attr: - for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); - - if (vlan->kobj != bat_priv->mesh_obj) { - kobject_uevent(vlan->kobj, KOBJ_REMOVE); - kobject_del(vlan->kobj); - } - kobject_put(vlan->kobj); - vlan->kobj = NULL; -out: - return -ENOMEM; -} - -/** - * batadv_sysfs_del_vlan() - remove all the sysfs objects for a given VLAN - * @bat_priv: the bat priv with all the soft interface information - * @vlan: the private data of the VLAN to destroy - */ -void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan) -{ - struct batadv_attribute **bat_attr; - - for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr)); - - if (vlan->kobj != bat_priv->mesh_obj) { - kobject_uevent(vlan->kobj, KOBJ_REMOVE); - kobject_del(vlan->kobj); - } - kobject_put(vlan->kobj); - vlan->kobj = NULL; -} - -static ssize_t batadv_show_mesh_iface(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_hard_iface *hard_iface; - ssize_t length; - const char *ifname; - - batadv_sysfs_deprecated(attr); - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - if (!hard_iface) - return 0; - - if (hard_iface->if_status == BATADV_IF_NOT_IN_USE) - ifname = "none"; - else - ifname = hard_iface->soft_iface->name; - - length = sprintf(buff, "%s\n", ifname); - - batadv_hardif_put(hard_iface); - - return length; -} - -/** - * batadv_store_mesh_iface_finish() - store new hardif mesh_iface state - * @net_dev: netdevice to add/remove to/from batman-adv soft-interface - * @ifname: name of soft-interface to modify - * - * Changes the parts of the hard+soft interface which can not be modified under - * sysfs lock (to prevent deadlock situations). - * - * Return: 0 on success, 0 < on failure - */ -static int batadv_store_mesh_iface_finish(struct net_device *net_dev, - char ifname[IFNAMSIZ]) -{ - struct net *net = dev_net(net_dev); - struct batadv_hard_iface *hard_iface; - int status_tmp; - int ret = 0; - - ASSERT_RTNL(); - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - if (!hard_iface) - return 0; - - if (strncmp(ifname, "none", 4) == 0) - status_tmp = BATADV_IF_NOT_IN_USE; - else - status_tmp = BATADV_IF_I_WANT_YOU; - - if (hard_iface->if_status == status_tmp) - goto out; - - if (hard_iface->soft_iface && - strncmp(hard_iface->soft_iface->name, ifname, IFNAMSIZ) == 0) - goto out; - - if (status_tmp == BATADV_IF_NOT_IN_USE) { - batadv_hardif_disable_interface(hard_iface, - BATADV_IF_CLEANUP_AUTO); - goto out; - } - - /* if the interface already is in use */ - if (hard_iface->if_status != BATADV_IF_NOT_IN_USE) - batadv_hardif_disable_interface(hard_iface, - BATADV_IF_CLEANUP_AUTO); - - ret = batadv_hardif_enable_interface(hard_iface, net, ifname); -out: - batadv_hardif_put(hard_iface); - return ret; -} - -/** - * batadv_store_mesh_iface_work() - store new hardif mesh_iface state - * @work: work queue item - * - * Changes the parts of the hard+soft interface which can not be modified under - * sysfs lock (to prevent deadlock situations). - */ -static void batadv_store_mesh_iface_work(struct work_struct *work) -{ - struct batadv_store_mesh_work *store_work; - int ret; - - store_work = container_of(work, struct batadv_store_mesh_work, work); - - rtnl_lock(); - ret = batadv_store_mesh_iface_finish(store_work->net_dev, - store_work->soft_iface_name); - rtnl_unlock(); - - if (ret < 0) - pr_err("Failed to store new mesh_iface state %s for %s: %d\n", - store_work->soft_iface_name, store_work->net_dev->name, - ret); - - dev_put(store_work->net_dev); - kfree(store_work); -} - -static ssize_t batadv_store_mesh_iface(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_store_mesh_work *store_work; - - batadv_sysfs_deprecated(attr); - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - if (strlen(buff) >= IFNAMSIZ) { - pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n", - buff); - return -EINVAL; - } - - store_work = kmalloc(sizeof(*store_work), GFP_KERNEL); - if (!store_work) - return -ENOMEM; - - dev_hold(net_dev); - INIT_WORK(&store_work->work, batadv_store_mesh_iface_work); - store_work->net_dev = net_dev; - strscpy(store_work->soft_iface_name, buff, - sizeof(store_work->soft_iface_name)); - - queue_work(batadv_event_workqueue, &store_work->work); - - return count; -} - -static ssize_t batadv_show_iface_status(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_hard_iface *hard_iface; - ssize_t length; - - batadv_sysfs_deprecated(attr); - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - if (!hard_iface) - return 0; - - switch (hard_iface->if_status) { - case BATADV_IF_TO_BE_REMOVED: - length = sprintf(buff, "disabling\n"); - break; - case BATADV_IF_INACTIVE: - length = sprintf(buff, "inactive\n"); - break; - case BATADV_IF_ACTIVE: - length = sprintf(buff, "active\n"); - break; - case BATADV_IF_TO_BE_ACTIVATED: - length = sprintf(buff, "enabling\n"); - break; - case BATADV_IF_NOT_IN_USE: - default: - length = sprintf(buff, "not in use\n"); - break; - } - - batadv_hardif_put(hard_iface); - - return length; -} - -#ifdef CONFIG_BATMAN_ADV_BATMAN_V - -/** - * batadv_store_throughput_override() - parse and store throughput override - * entered by the user - * @kobj: kobject representing the private mesh sysfs directory - * @attr: the batman-adv attribute the user is interacting with - * @buff: the buffer containing the user data - * @count: number of bytes in the buffer - * - * Return: 'count' on success or a negative error code in case of failure - */ -static ssize_t batadv_store_throughput_override(struct kobject *kobj, - struct attribute *attr, - char *buff, size_t count) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_hard_iface *hard_iface; - struct batadv_priv *bat_priv; - u32 tp_override; - u32 old_tp_override; - bool ret; - - batadv_sysfs_deprecated(attr); - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - if (!hard_iface) - return -EINVAL; - - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - ret = batadv_parse_throughput(net_dev, buff, "throughput_override", - &tp_override); - if (!ret) - goto out; - - old_tp_override = atomic_read(&hard_iface->bat_v.throughput_override); - if (old_tp_override == tp_override) - goto out; - - batadv_info(hard_iface->soft_iface, - "%s: %s: Changing from: %u.%u MBit to: %u.%u MBit\n", - "throughput_override", net_dev->name, - old_tp_override / 10, old_tp_override % 10, - tp_override / 10, tp_override % 10); - - atomic_set(&hard_iface->bat_v.throughput_override, tp_override); - - if (hard_iface->soft_iface) { - bat_priv = netdev_priv(hard_iface->soft_iface); - batadv_netlink_notify_hardif(bat_priv, hard_iface); - } - -out: - batadv_hardif_put(hard_iface); - return count; -} - -static ssize_t batadv_show_throughput_override(struct kobject *kobj, - struct attribute *attr, - char *buff) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_hard_iface *hard_iface; - u32 tp_override; - - batadv_sysfs_deprecated(attr); - - hard_iface = batadv_hardif_get_by_netdev(net_dev); - if (!hard_iface) - return -EINVAL; - - tp_override = atomic_read(&hard_iface->bat_v.throughput_override); - - batadv_hardif_put(hard_iface); - return sprintf(buff, "%u.%u MBit\n", tp_override / 10, - tp_override % 10); -} - -#endif - -static BATADV_ATTR(mesh_iface, 0644, batadv_show_mesh_iface, - batadv_store_mesh_iface); -static BATADV_ATTR(iface_status, 0444, batadv_show_iface_status, NULL); -#ifdef CONFIG_BATMAN_ADV_BATMAN_V -BATADV_ATTR_HIF_UINT(elp_interval, bat_v.elp_interval, 0644, - 2 * BATADV_JITTER, INT_MAX, NULL); -static BATADV_ATTR(throughput_override, 0644, batadv_show_throughput_override, - batadv_store_throughput_override); -#endif - -static struct batadv_attribute *batadv_batman_attrs[] = { - &batadv_attr_mesh_iface, - &batadv_attr_iface_status, -#ifdef CONFIG_BATMAN_ADV_BATMAN_V - &batadv_attr_elp_interval, - &batadv_attr_throughput_override, -#endif - NULL, -}; - -/** - * batadv_sysfs_add_hardif() - Add hard interface specific sysfs entries - * @hardif_obj: address where to store the pointer to new sysfs folder - * @dev: netdev struct of the hard interface - * - * Return: 0 on success or negative error number in case of failure - */ -int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev) -{ - struct kobject *hardif_kobject = &dev->dev.kobj; - struct batadv_attribute **bat_attr; - int err; - - *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR, - hardif_kobject); - - if (!*hardif_obj) { - batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, - BATADV_SYSFS_IF_BAT_SUBDIR); - goto out; - } - - for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) { - err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr)); - if (err) { - batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n", - dev->name, BATADV_SYSFS_IF_BAT_SUBDIR, - ((*bat_attr)->attr).name); - goto rem_attr; - } - } - - return 0; - -rem_attr: - for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) - sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr)); -out: - return -ENOMEM; -} - -/** - * batadv_sysfs_del_hardif() - Remove hard interface specific sysfs entries - * @hardif_obj: address to the pointer to which stores batman-adv sysfs folder - * of the hard interface - */ -void batadv_sysfs_del_hardif(struct kobject **hardif_obj) -{ - kobject_uevent(*hardif_obj, KOBJ_REMOVE); - kobject_del(*hardif_obj); - kobject_put(*hardif_obj); - *hardif_obj = NULL; -} diff --git a/net/batman-adv/sysfs.h b/net/batman-adv/sysfs.h deleted file mode 100644 index d987f8b3..00000000 --- a/net/batman-adv/sysfs.h +++ /dev/null @@ -1,93 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* Copyright (C) 2010-2020 B.A.T.M.A.N. contributors: - * - * Marek Lindner - */ - -#ifndef _NET_BATMAN_ADV_SYSFS_H_ -#define _NET_BATMAN_ADV_SYSFS_H_ - -#include "main.h" - -#include <linux/kobject.h> -#include <linux/netdevice.h> -#include <linux/sysfs.h> -#include <linux/types.h> - -#define BATADV_SYSFS_IF_MESH_SUBDIR "mesh" -#define BATADV_SYSFS_IF_BAT_SUBDIR "batman_adv" -/** - * BATADV_SYSFS_VLAN_SUBDIR_PREFIX - prefix of the subfolder that will be - * created in the sysfs hierarchy for each VLAN interface. The subfolder will - * be named "BATADV_SYSFS_VLAN_SUBDIR_PREFIX%vid". - */ -#define BATADV_SYSFS_VLAN_SUBDIR_PREFIX "vlan" - -/** - * struct batadv_attribute - sysfs export helper for batman-adv attributes - */ -struct batadv_attribute { - /** @attr: sysfs attribute file */ - struct attribute attr; - - /** - * @show: function to export the current attribute's content to sysfs - */ - ssize_t (*show)(struct kobject *kobj, struct attribute *attr, - char *buf); - - /** - * @store: function to load new value from character buffer and save it - * in batman-adv attribute - */ - ssize_t (*store)(struct kobject *kobj, struct attribute *attr, - char *buf, size_t count); -}; - -#ifdef CONFIG_BATMAN_ADV_SYSFS - -int batadv_sysfs_add_meshif(struct net_device *dev); -void batadv_sysfs_del_meshif(struct net_device *dev); -int batadv_sysfs_add_hardif(struct kobject **hardif_obj, - struct net_device *dev); -void batadv_sysfs_del_hardif(struct kobject **hardif_obj); -int batadv_sysfs_add_vlan(struct net_device *dev, - struct batadv_softif_vlan *vlan); -void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan); - -#else - -static inline int batadv_sysfs_add_meshif(struct net_device *dev) -{ - return 0; -} - -static inline void batadv_sysfs_del_meshif(struct net_device *dev) -{ -} - -static inline int batadv_sysfs_add_hardif(struct kobject **hardif_obj, - struct net_device *dev) -{ - return 0; -} - -static inline void batadv_sysfs_del_hardif(struct kobject **hardif_obj) -{ -} - -static inline int batadv_sysfs_add_vlan(struct net_device *dev, - struct batadv_softif_vlan *vlan) -{ - return 0; -} - -static inline void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv, - struct batadv_softif_vlan *vlan) -{ -} - -#endif - -#endif /* _NET_BATMAN_ADV_SYSFS_H_ */ diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 965336a3..7cfe3081 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -187,9 +187,6 @@ struct batadv_hard_iface { /** @net_dev: pointer to the net_device */ struct net_device *net_dev; - /** @hardif_obj: kobject of the per interface sysfs "mesh" directory */ - struct kobject *hardif_obj; - /** @refcount: number of contexts the object is used */ struct kref refcount; @@ -1512,9 +1509,6 @@ struct batadv_softif_vlan { /** @vid: VLAN identifier */ unsigned short vid; - /** @kobj: kobject for sysfs vlan subdirectory */ - struct kobject *kobj; - /** @ap_isolation: AP isolation state */ atomic_t ap_isolation; /* boolean */ @@ -1667,9 +1661,6 @@ struct batadv_priv { /** @batman_queue_left: number of remaining OGM packet slots */ atomic_t batman_queue_left; - /** @mesh_obj: kobject for sysfs mesh subdirectory */ - struct kobject *mesh_obj; - #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** @debug_dir: dentry for debugfs batman-adv subdirectory */ struct dentry *debug_dir; @@ -2274,10 +2265,6 @@ struct batadv_algo_gw_ops { */ ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff, size_t count); - - /** @show_sel_class: prints the current GW selection class (optional) */ - ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff); - /** * @get_best_gw_node: select the best GW from the list of available * nodes (optional) @@ -2456,21 +2443,4 @@ enum batadv_tvlv_handler_flags { BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2), }; -/** - * struct batadv_store_mesh_work - Work queue item to detach add/del interface - * from sysfs locks - */ -struct batadv_store_mesh_work { - /** - * @net_dev: netdevice to add/remove to/from batman-adv soft-interface - */ - struct net_device *net_dev; - - /** @soft_iface_name: name of soft-interface to modify */ - char soft_iface_name[IFNAMSIZ]; - - /** @work: work queue item */ - struct work_struct work; -}; - #endif /* _NET_BATMAN_ADV_TYPES_H_ */ -- 2.28.0

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[PATCH] batctl: Fix retrieval of meshif ap_isolation

by Sven Eckelmann

The batadv command to retrieve the attributes is called BATADV_CMD_GET_MESH. The used BATADV_CMD_SET_MESH will only return the current settings via the "config" multicast group which is not evaluated by the ap_isolation command. Fixes: c56a63a5f12a ("batctl: Support generic netlink for ap_isolation command") Signed-off-by: Sven Eckelmann <sven(a)narfation.org> --- ap_isolation.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/ap_isolation.c b/ap_isolation.c index df19072..c8675f5 100644 --- a/ap_isolation.c +++ b/ap_isolation.c @@ -36,7 +36,7 @@ static int get_attrs_ap_isolation(struct nl_msg *msg, void *arg) static int get_ap_isolation(struct state *state) { - enum batadv_nl_commands nl_cmd = BATADV_CMD_SET_MESH; + enum batadv_nl_commands nl_cmd = BATADV_CMD_GET_MESH; if (state->selector == SP_VLAN) nl_cmd = BATADV_CMD_GET_VLAN; -- 2.28.0

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B.A.T.M.A.N October 2020