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[RFC,4/5] mptcp: add a mib for the infinite mapping sending

Message ID 8c484be5b9db1c3b81690bdba044042f57bf14b1.1630656206.git.geliangtang@xiaomi.com (mailing list archive)
State Superseded, archived
Delegated to: Mat Martineau
Headers show
Series The infinite mapping support | expand

Commit Message

Geliang Tang Sept. 3, 2021, 8:15 a.m. UTC 
From: Geliang Tang <geliangtang@xiaomi.com>

This patch added a new mib named MPTCP_MIB_INFINITEMAPTX, increase it
when a infinite mapping has been sent out.

Signed-off-by: Geliang Tang <geliangtang@xiaomi.com>
---
 net/mptcp/mib.c      | 1 +
 net/mptcp/mib.h      | 1 +
 net/mptcp/protocol.c | 3 +++
 3 files changed, 5 insertions(+)
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Patch

diff --git a/net/mptcp/mib.c b/net/mptcp/mib.c
index b21ff9be04c6..ab55afdcae22 100644
--- a/net/mptcp/mib.c
+++ b/net/mptcp/mib.c
@@ -24,6 +24,7 @@  static const struct snmp_mib mptcp_snmp_list[] = {
 	SNMP_MIB_ITEM("MPJoinAckRx", MPTCP_MIB_JOINACKRX),
 	SNMP_MIB_ITEM("MPJoinAckHMacFailure", MPTCP_MIB_JOINACKMAC),
 	SNMP_MIB_ITEM("DSSNotMatching", MPTCP_MIB_DSSNOMATCH),
+	SNMP_MIB_ITEM("InfiniteMapTx", MPTCP_MIB_INFINITEMAPTX),
 	SNMP_MIB_ITEM("InfiniteMapRx", MPTCP_MIB_INFINITEMAPRX),
 	SNMP_MIB_ITEM("DSSNoMatchTCP", MPTCP_MIB_DSSTCPMISMATCH),
 	SNMP_MIB_ITEM("DataCsumErr", MPTCP_MIB_DATACSUMERR),
diff --git a/net/mptcp/mib.h b/net/mptcp/mib.h
index ecd3d8b117e0..7901f1338d15 100644
--- a/net/mptcp/mib.h
+++ b/net/mptcp/mib.h
@@ -17,6 +17,7 @@  enum linux_mptcp_mib_field {
 	MPTCP_MIB_JOINACKRX,		/* Received an ACK + MP_JOIN */
 	MPTCP_MIB_JOINACKMAC,		/* HMAC was wrong on ACK + MP_JOIN */
 	MPTCP_MIB_DSSNOMATCH,		/* Received a new mapping that did not match the previous one */
+	MPTCP_MIB_INFINITEMAPTX,	/* Sent an infinite mapping */
 	MPTCP_MIB_INFINITEMAPRX,	/* Received an infinite mapping */
 	MPTCP_MIB_DSSTCPMISMATCH,	/* DSS-mapping did not map with TCP's sequence numbers */
 	MPTCP_MIB_DATACSUMERR,		/* The data checksum fail */
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index dd7738a6b7f5..4987909991cd 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -1284,6 +1284,8 @@  static void mptcp_update_data_checksum(struct sk_buff *skb, int added)
 
 static void mptcp_update_infinite_mapping(struct mptcp_sock *msk, struct mptcp_ext *mpext)
 {
+	struct sock *sk = (struct sock *)msk;
+
 	if (!mpext)
 		return;
 
@@ -1292,6 +1294,7 @@  static void mptcp_update_infinite_mapping(struct mptcp_sock *msk, struct mptcp_e
 	if (READ_ONCE(msk->csum_enabled))
 		mpext->csum = 0;
 
+	MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_INFINITEMAPTX);
 	WRITE_ONCE(msk->snd_infinite_mapping_enable, false);
 
 	pr_debug("infinite mapping: data_seq=%llu subflow_seq=%u data_len=%u dsn64=%d",