kernel/linux.git/net/netfilter/Makefile, branch v6.1.168

net: netfilter: move bpf_ct_set_nat_info kfunc in nf_nat_bpf.c

2022-10-03T16:17:32+00:00

Remove circular dependency between nf_nat module and nf_conntrack one moving bpf_ct_set_nat_info kfunc in nf_nat_bpf.c Fixes: 0fabd2aa199f ("net: netfilter: add bpf_ct_set_nat_info kfunc helper") Suggested-by: Kumar Kartikeya Dwivedi Tested-by: Nathan Chancellor Tested-by: Yauheni Kaliuta Signed-off-by: Lorenzo Bianconi Acked-by: John Fastabend Link: https://lore.kernel.org/r/51a65513d2cda3eeb0754842e8025ab3966068d8.1664490511.git.lorenzo@kernel.org Signed-off-by: Alexei Starovoitov

netfilter: nf_flow_table: count pending offload workqueue tasks

2022-07-11T14:25:14+00:00

To improve hardware offload debuggability count pending 'add', 'del' and 'stats' flow_table offload workqueue tasks. Counters are incremented before scheduling new task and decremented when workqueue handler finishes executing. These counters allow user to diagnose congestion on hardware offload workqueues that can happen when either CPU is starved and workqueue jobs are executed at lower rate than new ones are added or when hardware/driver can't keep up with the rate. Implement the described counters as percpu counters inside new struct netns_ft which is stored inside struct net. Expose them via new procfs file '/proc/net/stats/nf_flowtable' that is similar to existing 'nf_conntrack' file. Signed-off-by: Vlad Buslov Signed-off-by: Oz Shlomo Signed-off-by: Pablo Neira Ayuso

net/netfilter: Add unstable CT lookup helpers for XDP and TC-BPF

2022-01-18T22:26:42+00:00

This change adds conntrack lookup helpers using the unstable kfunc call interface for the XDP and TC-BPF hooks. The primary usecase is implementing a synproxy in XDP, see Maxim's patchset [0]. Export get_net_ns_by_id as nf_conntrack_bpf.c needs to call it. This object is only built when CONFIG_DEBUG_INFO_BTF_MODULES is enabled. [0]: https://lore.kernel.org/bpf/20211019144655.3483197-1-maximmi@nvidia.com Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20220114163953.1455836-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov

netfilter: nf_tables: make counter support built-in

2021-12-23T00:07:35+00:00

Make counter support built-in to allow for direct call in case of CONFIG_RETPOLINE. Signed-off-by: Pablo Neira Ayuso

netfilter: add netfilter hooks to SRv6 data plane

2021-08-29T23:51:36+00:00

This patch introduces netfilter hooks for solving the problem that conntrack couldn't record both inner flows and outer flows. This patch also introduces a new sysctl toggle for enabling lightweight tunnel netfilter hooks. Signed-off-by: Ryoga Saito Signed-off-by: Pablo Neira Ayuso

netfilter: nf_tables: add last expression

2021-06-17T01:23:00+00:00

Add a new optional expression that tells you when last matching on a given rule / set element element has happened. Signed-off-by: Pablo Neira Ayuso

netfilter: add new hook nfnl subsystem

2021-06-07T10:41:10+00:00

This nfnl subsystem allows to dump the list of all active netfiler hooks, e.g. defrag, conntrack, nf/ip/arp/ip6tables and so on. This helps to see what kind of features are currently enabled in the network stack. Sample output from nft tool using this infra: $ nft list hook ip input family ip hook input { +0000000010 nft_do_chain_inet [nf_tables] # nft table firewalld INPUT +0000000100 nf_nat_ipv4_local_in [nf_nat] +2147483647 ipv4_confirm [nf_conntrack] } Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso

netfilter: nf_log_common: merge with nf_log_syslog

2021-03-31T20:34:10+00:00

Remove nf_log_common. Now that all per-af modules have been merged there is no longer a need to provide a helper module. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso

netfilter: nf_log_netdev: merge with nf_log_syslog

2021-03-30T22:37:27+00:00

Provide netdev family support from the nf_log_syslog module. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso

netfilter: nf_log_ipv4: rename to nf_log_syslog

2021-03-30T22:37:27+00:00

Netfilter has multiple log modules: nf_log_arp nf_log_bridge nf_log_ipv4 nf_log_ipv6 nf_log_netdev nfnetlink_log nf_log_common With the exception of nfnetlink_log (packet is sent to userspace for dissection/logging), all of them log to the kernel ringbuffer. This is the first part of a series to merge all modules except nfnetlink_log into a single module: nf_log_syslog. This allows to reduce code. After the series, only two log modules remain: nfnetlink_log and nf_log_syslog. The latter provides the same functionality as the old per-af log modules. This renames nf_log_ipv4 to nf_log_syslog. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso