diff options
| author |   Florian Westphal <fw@strlen.de> | 2020-03-27 14:48:50 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-03-29 22:14:49 -0700 |
| commit | fc518953bc9c8d7d33c6ab261995f5038f3c87f9 (patch) | |
| tree | 9c4eebd575e693916feb8d234411d08a17ec430a /include/net/mptcp.h | |
| parent | mptcp: allow dumping subflow context to userspace (diff) | |
| download | linux-dev-fc518953bc9c8d7d33c6ab261995f5038f3c87f9.tar.xz linux-dev-fc518953bc9c8d7d33c6ab261995f5038f3c87f9.zip | |
mptcp: add and use MIB counter infrastructure
Exported via same /proc file as the Linux TCP MIB counters, so "netstat -s"
or "nstat" will show them automatically.
The MPTCP MIB counters are allocated in a distinct pcpu area in order to
avoid bloating/wasting TCP pcpu memory.
Counters are allocated once the first MPTCP socket is created in a
network namespace and free'd on exit.
If no sockets have been allocated, all-zero mptcp counters are shown.
The MIB counter list is taken from the multipath-tcp.org kernel, but
only a few counters have been picked up so far. The counter list can
be increased at any time later on.
v2 -> v3:
- remove 'inline' in foo.c files (David S. Miller)
Co-developed-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/mptcp.h')
| -rw-r--r-- | include/net/mptcp.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/net/mptcp.h b/include/net/mptcp.h index b648fa20eec8..0e7c5471010b 100644 --- a/include/net/mptcp.h +++ b/include/net/mptcp.h @@ -12,6 +12,8 @@ #include <linux/tcp.h> #include <linux/types.h> +struct seq_file; + /* MPTCP sk_buff extension data */ struct mptcp_ext { u64 data_ack; @@ -123,6 +125,7 @@ static inline bool mptcp_skb_can_collapse(const struct sk_buff *to, bool mptcp_sk_is_subflow(const struct sock *sk); +void mptcp_seq_show(struct seq_file *seq); #else static inline void mptcp_init(void) @@ -194,6 +197,7 @@ static inline bool mptcp_sk_is_subflow(const struct sock *sk) return false; } +static inline void mptcp_seq_show(struct seq_file *seq) { } #endif /* CONFIG_MPTCP */ #if IS_ENABLED(CONFIG_MPTCP_IPV6) |