fc518953bc
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>
41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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enum linux_mptcp_mib_field {
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MPTCP_MIB_NUM = 0,
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MPTCP_MIB_MPCAPABLEPASSIVE, /* Received SYN with MP_CAPABLE */
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MPTCP_MIB_MPCAPABLEPASSIVEACK, /* Received third ACK with MP_CAPABLE */
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MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK,/* Server-side fallback during 3-way handshake */
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MPTCP_MIB_MPCAPABLEACTIVEFALLBACK, /* Client-side fallback during 3-way handshake */
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MPTCP_MIB_RETRANSSEGS, /* Segments retransmitted at the MPTCP-level */
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MPTCP_MIB_JOINNOTOKEN, /* Received MP_JOIN but the token was not found */
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MPTCP_MIB_JOINSYNRX, /* Received a SYN + MP_JOIN */
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MPTCP_MIB_JOINSYNACKRX, /* Received a SYN/ACK + MP_JOIN */
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MPTCP_MIB_JOINSYNACKMAC, /* HMAC was wrong on SYN/ACK + MP_JOIN */
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MPTCP_MIB_JOINACKRX, /* Received an ACK + MP_JOIN */
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MPTCP_MIB_JOINACKMAC, /* HMAC was wrong on ACK + MP_JOIN */
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MPTCP_MIB_DSSNOMATCH, /* Received a new mapping that did not match the previous one */
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MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */
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__MPTCP_MIB_MAX
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};
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#define LINUX_MIB_MPTCP_MAX __MPTCP_MIB_MAX
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struct mptcp_mib {
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unsigned long mibs[LINUX_MIB_MPTCP_MAX];
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};
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static inline void MPTCP_INC_STATS(struct net *net,
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enum linux_mptcp_mib_field field)
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{
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if (likely(net->mib.mptcp_statistics))
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SNMP_INC_STATS(net->mib.mptcp_statistics, field);
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}
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static inline void __MPTCP_INC_STATS(struct net *net,
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enum linux_mptcp_mib_field field)
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{
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if (likely(net->mib.mptcp_statistics))
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__SNMP_INC_STATS(net->mib.mptcp_statistics, field);
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}
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bool mptcp_mib_alloc(struct net *net);
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