- 26 10月, 2017 4 次提交
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由 Doug Berger 提交于
As noted in the net-next submission for GENETv5 support [1], there were merge conflicts with an earlier net submission [2] that had not yet found its way to the net-next repository. Unfortunately, when the branches were merged the conflicts were not correctly resolved. This commit attempts to correct that. [1] https://lkml.org/lkml/2017/3/13/1145 [2] https://lkml.org/lkml/2017/3/9/890 Fixes: 101c4314 ("Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net") Signed-off-by: NDoug Berger <opendmb@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Girish Moodalbail 提交于
commit 635b8c8e ("tap: Renaming tap related APIs, data structures, macros") captured all the tap related fields into a new struct tap_dev. However, it failed to remove those fields from struct macvlan_dev. Those fields are currently unused and must be removed. While there I moved the comment for MAX_TAP_QUEUES to the right place. Fixes: 635b8c8e (tap: Renaming tap related APIs, data structures, macros) Signed-off-by: NGirish Moodalbail <girish.moodalbail@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Steven J. Hill 提交于
Signed-off-by: NSteven J. Hill <Steven.Hill@cavium.com> Signed-off-by: NDavid Daney <david.daney@cavium.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jon Maloy 提交于
The following warning was reported by syzbot on Oct 24. 2017: KASAN: slab-out-of-bounds Read in tipc_nametbl_lookup_dst_nodes This is a harmless bug, but we still want to get rid of the warning, so we swap the two conditions in question. Signed-off-by: NJon Maloy <jon.maloy@ericsson.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 10月, 2017 20 次提交
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由 Kees Cook 提交于
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: David Howells <dhowells@redhat.com> Cc: netdev@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kees Cook 提交于
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Francois Romieu <romieu@fr.zoreil.com> Cc: Daniele Venzano <venza@brownhat.org> Cc: netdev@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDaniele Venzano <venza@brownhat.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kees Cook 提交于
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using an explicit static variable to hold additional expiration details. Cc: "David S. Miller" <davem@davemloft.net> Cc: Bhumika Goyal <bhumirks@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Reshetova, Elena" <elena.reshetova@intel.com> Cc: netdev@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kees Cook 提交于
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Willem de Bruijn <willemb@google.com> Cc: Mike Maloney <maloney@google.com> Cc: Jarno Rajahalme <jarno@ovn.org> Cc: netdev@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kees Cook 提交于
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Arvid Brodin <arvid.brodin@alten.se> Cc: "David S. Miller" <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kees Cook 提交于
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Adds a pointer back to the sock. Cc: Gerrit Renker <gerrit@erg.abdn.ac.uk> Cc: "David S. Miller" <davem@davemloft.net> Cc: Soheil Hassas Yeganeh <soheil@google.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Cc: Eric Dumazet <edumazet@google.com> Cc: dccp@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kees Cook 提交于
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Solarflare linux maintainers <linux-net-drivers@solarflare.com> Cc: Edward Cree <ecree@solarflare.com> Cc: Bert Kenward <bkenward@solarflare.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jiri Pirko <jiri@mellanox.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: netdev@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Acked-by: NBert Kenward <bkenward@solarflare.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kees Cook 提交于
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Hans Liljestrand <ishkamiel@gmail.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: "Reshetova, Elena" <elena.reshetova@intel.com> Cc: netdev@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kees Cook 提交于
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Joerg Reuter <jreuter@yaina.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-hams@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Kees Cook 提交于
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Vlad Yasevich <vyasevich@gmail.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-sctp@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: NKees Cook <keescook@chromium.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Xin Long says: ==================== net: remove rtmsg_ifinfo used in bridge and bonding It's better to send notifications to userspace by the events in rtnetlink_event, instead of calling rtmsg_ifinfo directly. This patcheset is to remove rtmsg_ifinfo called in bonding and bridge, the notifications can be handled by NETDEV_CHANGEUPPER and NETDEV_CHANGELOWERSTATE events in rtnetlink_event. It could also fix some redundant notifications from bonding and bridge. v1->v2: - post to net-next.git instead of net.git, for it's more like an improvement for bonding v2->v3: - add patch 1/4 to remove rtmsg_ifinfo called in add_del_if ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Xin Long 提交于
After the patch 'rtnetlink: bring NETDEV_CHANGELOWERSTATE event process back to rtnetlink_event', bond_lower_state_changed would generate NETDEV_CHANGEUPPER event which would send a notification to userspace in rtnetlink_event. There's no need to call rtmsg_ifinfo to send the notification any more. So this patch is to remove it from these places after bond_lower_state_changed. Besides, after this, rtmsg_ifinfo is not needed to be exported. Signed-off-by: NXin Long <lucien.xin@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Xin Long 提交于
This patch is to bring NETDEV_CHANGELOWERSTATE event process back to rtnetlink_event so that bonding could use it instead of calling rtmsg_ifinfo to send a notification to userspace after netdev lower state is changed in the later patch. Signed-off-by: NXin Long <lucien.xin@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Xin Long 提交于
Since commit 42e52bf9 ("net: add netnotifier event for upper device change"), netdev_master_upper_dev_link has generated NETDEV_CHANGEUPPER event which would send a notification to userspace in rtnetlink_event. There's no need to call rtmsg_ifinfo to send the notification any more. So this patch is to remove it from bond_master_upper_dev_link as well as bond_upper_dev_unlink to avoid the redundant notifications. Signed-off-by: NXin Long <lucien.xin@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Xin Long 提交于
Since commit dc709f37 ("rtnetlink: bring NETDEV_CHANGEUPPER event process back in rtnetlink_event"), rtnetlink_event would process the NETDEV_CHANGEUPPER event and send a notification to userspace. In add_del_if, it would generate NETDEV_CHANGEUPPER event by whether netdev_master_upper_dev_link or netdev_upper_dev_unlink. There's no need to call rtmsg_ifinfo to send the notification any more. So this patch is to remove it from add_del_if also to avoid redundant notifications. Signed-off-by: NXin Long <lucien.xin@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Yonghong Song says: ==================== bpf: permit multiple bpf attachments for a single perf tracepoint event This patch set adds support to permit multiple bpf prog attachments for a single perf tracepoint event. Patch 1 does some cleanup such that perf_event_{set|free}_bpf_handler is called under the same condition. Patch 2 has the core implementation, and Patch 3 adds a test case. Changelogs: v2 -> v3: . fix compilation error. v1 -> v2: . fix a potential deadlock issue discovered by Daniel. . fix some coding style issues. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yonghong Song 提交于
The bpf sample program syscall_tp is modified to show attachment of more than bpf programs for a particular kernel tracepoint. Signed-off-by: NYonghong Song <yhs@fb.com> Acked-by: NAlexei Starovoitov <ast@kernel.org> Acked-by: NMartin KaFai Lau <kafai@fb.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yonghong Song 提交于
This patch enables multiple bpf attachments for a kprobe/uprobe/tracepoint single trace event. Each trace_event keeps a list of attached perf events. When an event happens, all attached bpf programs will be executed based on the order of attachment. A global bpf_event_mutex lock is introduced to protect prog_array attaching and detaching. An alternative will be introduce a mutex lock in every trace_event_call structure, but it takes a lot of extra memory. So a global bpf_event_mutex lock is a good compromise. The bpf prog detachment involves allocation of memory. If the allocation fails, a dummy do-nothing program will replace to-be-detached program in-place. Signed-off-by: NYonghong Song <yhs@fb.com> Acked-by: NAlexei Starovoitov <ast@kernel.org> Acked-by: NMartin KaFai Lau <kafai@fb.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yonghong Song 提交于
This is a cleanup such that doing the same check in perf_event_free_bpf_prog as we already do in perf_event_set_bpf_prog step. Signed-off-by: NYonghong Song <yhs@fb.com> Acked-by: NAlexei Starovoitov <ast@kernel.org> Acked-by: NMartin KaFai Lau <kafai@fb.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Shmulik Ladkani 提交于
Currently, ip6_tnl_xmit_ctl drops tunneled packets if the remote address (outer v6 destination) is one of host's locally configured addresses. Same applies to ip6_tnl_rcv_ctl: it drops packets if the remote address (outer v6 source) is a local address. This prevents using ipxip6 (and ip6_gre) tunnels whose local/remote endpoints are on same host; OTOH v4 tunnels (ipip or gre) allow such configurations. An example where this proves useful is a system where entities are identified by their unique v6 addresses, and use tunnels to encapsulate traffic between them. The limitation prevents placing several entities on same host. Introduce IP6_TNL_F_ALLOW_LOCAL_REMOTE which allows to bypass this restriction. Signed-off-by: NShmulik Ladkani <shmulik.ladkani@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 24 10月, 2017 16 次提交
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由 David S. Miller 提交于
Jiri Pirko says: ==================== mlxsw: Various fixes Yotam says: Cleanup some issues reported by sparse. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yotam Gigi 提交于
Make the spectrum_mr_tcam.c include the spectrum_mr_tcam.h header file. Cleans up sparse warning: symbol 'mlxsw_sp_mr_tcam_ops' was not declared. Should it be static? Fixes: 0e14c777 ("mlxsw: spectrum: Add the multicast routing hardware logic") Signed-off-by: NYotam Gigi <yotamg@mellanox.com> Signed-off-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yotam Gigi 提交于
The function is only used internally in spectrum_mr.c and is not declared in the header file, thus make it static. Cleans up sparse warning: symbol 'mlxsw_sp_mr_dev_vif_lookup' was not declared. Should it be static? Fixes: c011ec1b ("mlxsw: spectrum: Add the multicast routing offloading logic") Signed-off-by: NYotam Gigi <yotamg@mellanox.com> Signed-off-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Yotam Gigi 提交于
Fix various endianness issues in comparisons and assignments. The fix is entirely cosmetic as all the values fixed are endianness-agnostic. Cleans up sparse warnings: spectrum_mr.c:156:49: warning: restricted __be32 degrades to integer spectrum_mr.c:206:26: warning: restricted __be32 degrades to integer spectrum_mr.c:212:31: warning: incorrect type in assignment (different base types) spectrum_mr.c:212:31: expected restricted __be32 [usertype] addr4 spectrum_mr.c:212:31: got unsigned int spectrum_mr.c:214:32: warning: incorrect type in assignment (different base types) spectrum_mr.c:214:32: expected restricted __be32 [usertype] addr4 spectrum_mr.c:214:32: got unsigned int spectrum_mr.c:461:16: warning: restricted __be32 degrades to integer spectrum_mr.c:461:49: warning: restricted __be32 degrades to integer Fixes: c011ec1b ("mlxsw: spectrum: Add the multicast routing offloading logic") Signed-off-by: NYotam Gigi <yotamg@mellanox.com> Signed-off-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arkadi Sharshevsky 提交于
During the dump the per netlink packet entry counter should be zeroed out when new packet is created. Fixes: 190d38a5 ("mlxsw: spectrum_dpipe: Add support for adjacency table dump") Signed-off-by: NArkadi Sharshevsky <arkadis@mellanox.com> Reported-by: NDavid Ahern <dsahern@gmail.com> Signed-off-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Or Gerlitz 提交于
Prior to commit b3f55bdd, the networking core doesn't wire an in-place actions list the when the low level driver is called to offload the flow, but all low level drivers do that (call tcf_exts_to_list()) in their offloading "add" logic. Now, the in-place list is set in the core which goes over the list in a loop, but also by the hw driver when their offloading code is invoked indirectly: cls_xxx add flow -> tc_setup_cb_call -> tc_exts_setup_cb_egdev_call -> hw driver which messes up the core list instance upon driver return. Fix that by avoiding in-place list on the net core code that deals with adding flows. Fixes: b3f55bdd ('net: sched: introduce per-egress action device callbacks') Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com> Acked-by: NJiri Pirko <jiri@mellanox.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Veerasenareddy Burru 提交于
Pass date and time information to NIC at the time of loading firmware and periodically update the host time to NIC firmware. This is to make NIC firmware use the same time reference as Host, so that it is easy to correlate logs from firmware and host for debugging. Signed-off-by: NVeerasenareddy Burru <veerasenareddy.burru@cavium.com> Signed-off-by: NFelix Manlunas <felix.manlunas@cavium.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Wei Wang 提交于
In rt6_select(), fn->leaf could be pointing to net->ipv6.ip6_null_entry. In this case, we should directly return instead of trying to carry on with the rest of the process. If not, we could crash at: spin_lock_bh(&leaf->rt6i_table->rt6_lock); because net->ipv6.ip6_null_entry does not have rt6i_table set. Syzkaller recently reported following issue on net-next: Use struct sctp_sack_info instead kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: sctp: [Deprecated]: syz-executor4 (pid 26496) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead CPU: 1 PID: 26523 Comm: syz-executor6 Not tainted 4.14.0-rc4+ #85 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d147e3c0 task.stack: ffff8801a4328000 RIP: 0010:debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline] RIP: 0010:do_raw_spin_lock+0x23/0x1e0 kernel/locking/spinlock_debug.c:112 RSP: 0018:ffff8801a432ed70 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 0000000000000018 RCX: 0000000000000000 RDX: 0000000000000003 RSI: 0000000000000000 RDI: 000000000000001c RBP: ffff8801a432ed90 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8482b279 R12: ffff8801ce2ff3a0 sctp: [Deprecated]: syz-executor1 (pid 26546) Use of int in maxseg socket option. Use struct sctp_assoc_value instead R13: dffffc0000000000 R14: ffff8801d971e000 R15: ffff8801ce2ff0d8 FS: 00007f56e82f5700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001ddbc22000 CR3: 00000001a4a04000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x39/0x40 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:321 [inline] rt6_select net/ipv6/route.c:786 [inline] ip6_pol_route+0x1be3/0x3bd0 net/ipv6/route.c:1650 sctp: [Deprecated]: syz-executor1 (pid 26576) Use of int in maxseg socket option. Use struct sctp_assoc_value instead TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. ip6_pol_route_output+0x4c/0x60 net/ipv6/route.c:1843 fib6_rule_lookup+0x9e/0x2a0 net/ipv6/ip6_fib.c:309 ip6_route_output_flags+0x1f1/0x2b0 net/ipv6/route.c:1871 ip6_route_output include/net/ip6_route.h:80 [inline] ip6_dst_lookup_tail+0x4ea/0x970 net/ipv6/ip6_output.c:953 ip6_dst_lookup_flow+0xc8/0x270 net/ipv6/ip6_output.c:1076 sctp_v6_get_dst+0x675/0x1c30 net/sctp/ipv6.c:274 sctp_transport_route+0xa8/0x430 net/sctp/transport.c:287 sctp_assoc_add_peer+0x4fe/0x1100 net/sctp/associola.c:656 __sctp_connect+0x251/0xc80 net/sctp/socket.c:1187 sctp_connect+0xb4/0xf0 net/sctp/socket.c:4209 inet_dgram_connect+0x16b/0x1f0 net/ipv4/af_inet.c:541 SYSC_connect+0x20a/0x480 net/socket.c:1642 SyS_connect+0x24/0x30 net/socket.c:1623 entry_SYSCALL_64_fastpath+0x1f/0xbe Fixes: 66f5d6ce ("ipv6: replace rwlock with rcu and spinlock in fib6_table") Signed-off-by: NWei Wang <weiwan@google.com> Acked-by: NEric Dumazet <edumazet@google.com> Acked-by: NMartin KaFai Lau <kafai@fb.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Christoph Paasch 提交于
We already allow to enable TFO without a cookie by using the fastopen-sysctl and setting it to TFO_SERVER_COOKIE_NOT_REQD (or TFO_CLIENT_NO_COOKIE). This is safe to do in certain environments where we know that there isn't a malicous host (aka., data-centers) or when the application-protocol already provides an authentication mechanism in the first flight of data. A server however might be providing multiple services or talking to both sides (public Internet and data-center). So, this server would want to enable cookie-less TFO for certain services and/or for connections that go to the data-center. This patch exposes a socket-option and a per-route attribute to enable such fine-grained configurations. Signed-off-by: NChristoph Paasch <cpaasch@apple.com> Reviewed-by: NYuchung Cheng <ycheng@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Tim Hansen 提交于
Mark hlist node in sk rcu iterator as protected by the rcu. hlist_next_rcu accomplishes this and silences the warnings sparse throws. Found with make C=1 net/ipv4/udp.o on linux-next tag next-20171009. Signed-off-by: NTim Hansen <devtimhansen@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Gustavo A. R. Silva 提交于
Use BUG_ON instead of if condition followed by BUG in tcp_time_wait. This issue was detected with the help of Coccinelle. Signed-off-by: NGustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Gustavo A. R. Silva 提交于
Use BUG_ON instead of if condition followed by BUG in icmp_timestamp. This issue was detected with the help of Coccinelle. Signed-off-by: NGustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Jesper Dangaard Brouer 提交于
As pointed out by Michael, commit 1c601d82 ("bpf: cpumap xdp_buff to skb conversion and allocation") contains a classical example of the potential lost wake-up problem. We need to recheck the condition __ptr_ring_empty() after changing current->state to TASK_INTERRUPTIBLE, this avoids a race between wake_up_process() and schedule(). After this, a race with wake_up_process() will simply change the state to TASK_RUNNING, and the schedule() call not really put us to sleep. Fixes: 1c601d82 ("bpf: cpumap xdp_buff to skb conversion and allocation") Reported-by: N"Michael S. Tsirkin" <mst@redhat.com> Signed-off-by: NJesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Gustavo A. R. Silva 提交于
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that in this particular case I placed the "fall through" comment on its own line, which is what GCC is expecting to find. Signed-off-by: NGustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Gustavo A. R. Silva 提交于
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by: NGustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
Eric Dumazet says: ==================== ipv6: addrconf: hash improvements and cleanups Remove unecessary BH blocking, and bring IPv6 addrconf to modern world, with per netns hash perturbation and decent hash size. ==================== Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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