linux/net/netfilter/ipvs, branch v5.12

Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next

2021-02-06T23:34:23Z

Pablo Neira Ayuso says: ==================== Netfilter/IPVS updates for net-next 1) Remove indirection and use nf_ct_get() instead from nfnetlink_log and nfnetlink_queue, from Florian Westphal. 2) Add weighted random twos choice least-connection scheduling for IPVS, from Darby Payne. 3) Add a __hash placeholder in the flow tuple structure to identify the field to be included in the rhashtable key hash calculation. 4) Add a new nft_parse_register_load() and nft_parse_register_store() to consolidate register load and store in the core. 5) Statify nft_parse_register() since it has no more module clients. 6) Remove redundant assignment in nft_cmp, from Colin Ian King. * git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next: netfilter: nftables: remove redundant assignment of variable err netfilter: nftables: statify nft_parse_register() netfilter: nftables: add nft_parse_register_store() and use it netfilter: nftables: add nft_parse_register_load() and use it netfilter: flowtable: add hash offset field to tuple ipvs: add weighted random twos choice algorithm netfilter: ctnetlink: remove get_ct indirection ==================== Link: https://lore.kernel.org/r/20210206015005.23037-1-pablo@netfilter.org Signed-off-by: Jakub Kicinski

netfilter: move handlers to net/ip_vs.h

2021-02-05T02:37:57Z

Fix the following compilation warnings: net/netfilter/ipvs/ip_vs_proto_tcp.c:147:1: warning: no previous prototype for 'tcp_snat_handler' [-Wmissing-prototypes] 147 | tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, | ^~~~~~~~~~~~~~~~ net/netfilter/ipvs/ip_vs_proto_udp.c:136:1: warning: no previous prototype for 'udp_snat_handler' [-Wmissing-prototypes] 136 | udp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, | ^~~~~~~~~~~~~~~~ Signed-off-by: Leon Romanovsky Signed-off-by: Jakub Kicinski

net: remove redundant 'depends on NET'

2021-01-28T01:04:12Z

These Kconfig files are included from net/Kconfig, inside the if NET ... endif. Remove 'depends on NET', which we know it is already met. Signed-off-by: Masahiro Yamada Link: https://lore.kernel.org/r/20210125232026.106855-1-masahiroy@kernel.org Signed-off-by: Jakub Kicinski

ipvs: add weighted random twos choice algorithm

2021-01-26T00:09:46Z

Adds the random twos choice load-balancing algorithm. The algorithm will pick two random servers based on weights. Then select the server with the least amount of connections normalized by weight. The algorithm avoids the "herd behavior" problem. The algorithm comes from a paper by Michael Mitzenmacher available here http://www.eecs.harvard.edu/~michaelm/NEWWORK/postscripts/twosurvey.pdf Signed-off-by: Darby Payne Acked-by: Julian Anastasov Acked-by: Simon Horman Signed-off-by: Pablo Neira Ayuso

Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next

2020-12-14T23:43:21Z

Pablo Neira Ayuso says: ==================== Netfilter/IPVS updates for net-next 1) Missing dependencies in NFT_BRIDGE_REJECT, from Randy Dunlap. 2) Use atomic_inc_return() instead of atomic_add_return() in IPVS, from Yejune Deng. 3) Simplify check for overquota in xt_nfacct, from Kaixu Xia. 4) Move nfnl_acct_list away from struct net, from Miao Wang. 5) Pass actual sk in reject actions, from Jan Engelhardt. 6) Add timeout and protoinfo to ctnetlink destroy events, from Florian Westphal. 7) Four patches to generalize set infrastructure to support for multiple expressions per set element. * git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next: netfilter: nftables: netlink support for several set element expressions netfilter: nftables: generalize set extension to support for several expressions netfilter: nftables: move nft_expr before nft_set netfilter: nftables: generalize set expressions support netfilter: ctnetlink: add timeout and protoinfo to destroy events netfilter: use actual socket sk for REJECT action netfilter: nfnl_acct: remove data from struct net netfilter: Remove unnecessary conversion to bool ipvs: replace atomic_add_return() netfilter: nft_reject_bridge: fix build errors due to code movement ==================== Link: https://lore.kernel.org/r/20201212230513.3465-1-pablo@netfilter.org Signed-off-by: Jakub Kicinski

ipvs: fix possible memory leak in ip_vs_control_net_init

2020-11-27T11:10:46Z

kmemleak report a memory leak as follows: BUG: memory leak unreferenced object 0xffff8880759ea000 (size 256): backtrace: [<00000000c0bf2deb>] kmem_cache_zalloc include/linux/slab.h:656 [inline] [<00000000c0bf2deb>] __proc_create+0x23d/0x7d0 fs/proc/generic.c:421 [<000000009d718d02>] proc_create_reg+0x8e/0x140 fs/proc/generic.c:535 [<0000000097bbfc4f>] proc_create_net_data+0x8c/0x1b0 fs/proc/proc_net.c:126 [<00000000652480fc>] ip_vs_control_net_init+0x308/0x13a0 net/netfilter/ipvs/ip_vs_ctl.c:4169 [<000000004c927ebe>] __ip_vs_init+0x211/0x400 net/netfilter/ipvs/ip_vs_core.c:2429 [<00000000aa6b72d9>] ops_init+0xa8/0x3c0 net/core/net_namespace.c:151 [<00000000153fd114>] setup_net+0x2de/0x7e0 net/core/net_namespace.c:341 [<00000000be4e4f07>] copy_net_ns+0x27d/0x530 net/core/net_namespace.c:482 [<00000000f1c23ec9>] create_new_namespaces+0x382/0xa30 kernel/nsproxy.c:110 [<00000000098a5757>] copy_namespaces+0x2e6/0x3b0 kernel/nsproxy.c:179 [<0000000026ce39e9>] copy_process+0x220a/0x5f00 kernel/fork.c:2072 [<00000000b71f4efe>] _do_fork+0xc7/0xda0 kernel/fork.c:2428 [<000000002974ee96>] __do_sys_clone3+0x18a/0x280 kernel/fork.c:2703 [<0000000062ac0a4d>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<0000000093f1ce2c>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 In the error path of ip_vs_control_net_init(), remove_proc_entry() needs to be called to remove the added proc entry, otherwise a memory leak will occur. Also, add some '#ifdef CONFIG_PROC_FS' because proc_create_net* return NULL when PROC is not used. Fixes: b17fc9963f83 ("IPVS: netns, ip_vs_stats and its procfs") Fixes: 61b1ab4583e2 ("IPVS: netns, add basic init per netns.") Reported-by: Hulk Robot Signed-off-by: Wang Hai Acked-by: Julian Anastasov Signed-off-by: Pablo Neira Ayuso

ipvs: replace atomic_add_return()

2020-11-22T12:45:52Z

atomic_inc_return() looks better Signed-off-by: Yejune Deng Acked-by: Julian Anastasov Signed-off-by: Pablo Neira Ayuso

netfilter: use actual socket sk rather than skb sk when routing harder

2020-10-30T11:57:39Z

If netfilter changes the packet mark when mangling, the packet is rerouted using the route_me_harder set of functions. Prior to this commit, there's one big difference between route_me_harder and the ordinary initial routing functions, described in the comment above __ip_queue_xmit(): /* Note: skb->sk can be different from sk, in case of tunnels */ int __ip_queue_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl, That function goes on to correctly make use of sk->sk_bound_dev_if, rather than skb->sk->sk_bound_dev_if. And indeed the comment is true: a tunnel will receive a packet in ndo_start_xmit with an initial skb->sk. It will make some transformations to that packet, and then it will send the encapsulated packet out of a *new* socket. That new socket will basically always have a different sk_bound_dev_if (otherwise there'd be a routing loop). So for the purposes of routing the encapsulated packet, the routing information as it pertains to the socket should come from that socket's sk, rather than the packet's original skb->sk. For that reason __ip_queue_xmit() and related functions all do the right thing. One might argue that all tunnels should just call skb_orphan(skb) before transmitting the encapsulated packet into the new socket. But tunnels do *not* do this -- and this is wisely avoided in skb_scrub_packet() too -- because features like TSQ rely on skb->destructor() being called when that buffer space is truely available again. Calling skb_orphan(skb) too early would result in buffers filling up unnecessarily and accounting info being all wrong. Instead, additional routing must take into account the new sk, just as __ip_queue_xmit() notes. So, this commit addresses the problem by fishing the correct sk out of state->sk -- it's already set properly in the call to nf_hook() in __ip_local_out(), which receives the sk as part of its normal functionality. So we make sure to plumb state->sk through the various route_me_harder functions, and then make correct use of it following the example of __ip_queue_xmit(). Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Jason A. Donenfeld Reviewed-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso

ipvs: adjust the debug info in function set_tcp_state

2020-10-20T11:54:46Z

Outputting client,virtual,dst addresses info when tcp state changes, which makes the connection debug more clear Signed-off-by: longguang.yue Acked-by: Julian Anastasov Signed-off-by: Pablo Neira Ayuso

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

2020-10-15T19:43:21Z

Minor conflicts in net/mptcp/protocol.h and tools/testing/selftests/net/Makefile. In both cases code was added on both sides in the same place so just keep both. Signed-off-by: Jakub Kicinski