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34cc9e5288
linux/include/net/netfilter
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Pablo Neira Ayuso 34cc9e5288 netfilter: nf_tables: cancel tracking for clobbered destination registers 
Output of expressions might be larger than one single register, this might
clobber existing data. Reset tracking for all destination registers that
required to store the expression output.

This patch adds three new helper functions:

- nft_reg_track_update: cancel previous register tracking and update it.
- nft_reg_track_cancel: cancel any previous register tracking info.
- __nft_reg_track_cancel: cancel only one single register tracking info.

Partial register clobbering detection is also supported by checking the
.num_reg field which describes the number of register that are used.

This patch updates the following expressions:

- meta_bridge
- bitwise
- byteorder
- meta
- payload

to use these helper functions.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2022-03-20 00:29:46 +01:00
..
ipv4 netfilter: disable defrag once its no longer needed 2021-04-26 03:20:07 +02:00
ipv6 netfilter: conntrack: fix boot failure with nf_conntrack.enable_hooks=1 2021-09-28 13:04:55 +02:00
br_netfilter.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_conntrack_acct.h netfilter: conntrack: remove extension register api 2022-02-04 06:30:28 +01:00
nf_conntrack_act_ct.h net/sched: act_ct: Fill offloading tuple iifidx 2022-01-04 12:12:55 +00:00
nf_conntrack_bpf.h net/netfilter: Add unstable CT lookup helpers for XDP and TC-BPF 2022-01-18 14:26:42 -08:00
nf_conntrack_bridge.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_conntrack_core.h netfilter: conntrack: nf_ct_gre_keymap_flush() removal 2021-07-02 02:07:01 +02:00
nf_conntrack_count.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nf_conntrack_ecache.h netfilter: ecache: don't use nf_conn spinlock 2022-02-09 11:44:03 +01:00
nf_conntrack_expect.h netfilter: fix coding-style errors. 2019-09-13 11:39:38 +02:00
nf_conntrack_extend.h netfilter: conntrack: remove extension register api 2022-02-04 06:30:28 +01:00
nf_conntrack_helper.h netfilter: conntrack: Add and use nf_ct_set_auto_assign_helper_warned() 2022-03-20 00:29:35 +01:00
nf_conntrack_l4proto.h netfilter: conntrack: pass hook state to log functions 2021-06-18 14:47:43 +02:00
nf_conntrack_labels.h netfilter: conntrack: remove extension register api 2022-02-04 06:30:28 +01:00
nf_conntrack_seqadj.h netfilter: conntrack: remove extension register api 2022-02-04 06:30:28 +01:00
nf_conntrack_synproxy.h netfilter: conntrack: wrap two inline functions in config checks. 2019-09-13 12:47:10 +02:00
nf_conntrack_timeout.h netfilter: cttimeout: use option structure 2022-02-09 11:56:06 +01:00
nf_conntrack_timestamp.h netfilter: conntrack: remove extension register api 2022-02-04 06:30:28 +01:00
nf_conntrack_tuple.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_conntrack_zones.h netfilter: conntrack: remove CONFIG_NF_CONNTRACK checks from nf_conntrack_zones.h. 2019-09-13 12:47:41 +02:00
nf_conntrack.h Revert "netfilter: conntrack: tag conntracks picked up in local out hook" 2022-03-08 17:28:38 +01:00
nf_dup_netdev.h netfilter: nft_{fwd,dup}_netdev: add offload support 2019-09-10 22:44:29 +02:00
nf_flow_table.h net/sched: act_ct: Fix flow table lookup failure with no originating ifindex 2022-03-01 22:08:31 +01:00
nf_hooks_lwtunnel.h netfilter: add netfilter hooks to SRv6 data plane 2021-08-30 01:51:36 +02:00
nf_log.h netfilter: nf_log_common: merge with nf_log_syslog 2021-03-31 22:34:10 +02:00
nf_nat_helper.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nf_nat_masquerade.h netfilter: update include directives. 2019-09-13 12:33:06 +02:00
nf_nat_redirect.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nf_nat.h netfilter: nat: move nf_xfrm_me_harder to where it is used 2021-04-26 03:20:07 +02:00
nf_queue.h netfilter: nf_queue: fix possible use-after-free 2022-03-01 11:50:35 +01:00
nf_reject.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nf_socket.h
nf_synproxy.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_tables_core.h netfilter: nft_cmp: optimize comparison for 16-bytes 2022-02-09 12:00:28 +01:00
nf_tables_ipv4.h netfilter: nf_tables: convert pktinfo->tprot_set to flags field 2021-11-01 09:30:20 +01:00
nf_tables_ipv6.h netfilter: nf_tables: convert pktinfo->tprot_set to flags field 2021-11-01 09:30:20 +01:00
nf_tables_offload.h netfilter: nf_tables_offload: incorrect flow offload action array size 2022-02-20 01:22:20 +01:00
nf_tables.h netfilter: nf_tables: cancel tracking for clobbered destination registers 2022-03-20 00:29:46 +01:00
nf_tproxy.h
nft_fib.h netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
nft_meta.h netfilter: nf_tables: cancel tracking for clobbered destination registers 2022-03-20 00:29:46 +01:00
nft_reject.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
xt_rateest.h net: sched: Merge Qdisc::bstats and Qdisc::cpu_bstats data types 2021-10-18 12:54:41 +01:00