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Subject[PATCH v6] Netfilter ring buffer support
This patch set merges ipt_LOG and ip6t_LOG and adds ring buffer support
to xt_LOG.

Using "--ring" an user can create LOG rules which log messages into
one or more ring buffers.
Each ring buffer is represented as pipe-like file in

Ring buffer support can be enabled/disabled using

Changes since v1:
- Merged ipt_LOG and ip6t_LOG
- Implemented ring buffer support as part of xt_LOG.

Changes since v2:
- Fixed struct xt_log_info_v1's data layout
- Removed the sizeof(void *) hack
- Replaced BUG() by WARN_ON_ONCE()

Changes since v3:
- Merged xt_LOG_core.c and xt_LOG_ring.c into xt_LOG.c
- Made happy

Changes since v4:
- Fixed a typo in include/linux/netfilter/Kbuild
(Thanks Bastian!)

Changes since v5:
- Made timestamp support a separate patch
- Renamed xt_LOG_ring to nf_log_ring
- Removed unused prototypes from xt_log.h
- Renamed find_next_entry_inc() to find_next_iter_entry()
- Fixed OOM error path in rlog_open_pipe()

Patch 1 and 2 have already been applied to net-next.git.

[PATCH 1/6] Netfilter: Merge ipt_LOG and ip6_LOG into xt_LOG
[PATCH 2/6] netfilter: xt_LOG: fix bogus extra layer-4 logging
[PATCH 3/6] ring_buffer: Export for_each_buffer_cpu()
[PATCH 4/6] xt_log: Make printk() in sb_close() optional
[PATCH 5/6] Netfilter: xt_LOG: Implement ring buffer support
[PATCH 6/6] Netfilter: xt_LOG: Add timestamp support


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