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| author | Paolo Abeni <pabeni@redhat.com> | 2022-05-04 14:54:08 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-05-05 19:00:16 -0700 |
| commit | 38acb6260f60a7698c3a24db4df6ec1cf8f14c60 (patch) | |
| tree | 580059ce70376365ab585f2a7c2f3f7dfd8db6dc /net/mptcp | |
| parent | f3589be0c420a3137e5902d15705ced6a36f3f43 (diff) | |
| download | linux-stable-38acb6260f60a7698c3a24db4df6ec1cf8f14c60.tar.gz linux-stable-38acb6260f60a7698c3a24db4df6ec1cf8f14c60.tar.bz2 linux-stable-38acb6260f60a7698c3a24db4df6ec1cf8f14c60.zip | |
mptcp: add more offered MIBs counter
Track the exceptional handling of MPTCP-level offered window
with a few more counters for observability.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp')
| -rw-r--r-- | net/mptcp/mib.c | 3 | ||||
| -rw-r--r-- | net/mptcp/mib.h | 5 | ||||
| -rw-r--r-- | net/mptcp/options.c | 6 |
3 files changed, 13 insertions, 1 deletions
diff --git a/net/mptcp/mib.c b/net/mptcp/mib.c index 6a6f8151375a..0dac2863c6e1 100644 --- a/net/mptcp/mib.c +++ b/net/mptcp/mib.c @@ -57,6 +57,9 @@ static const struct snmp_mib mptcp_snmp_list[] = { SNMP_MIB_ITEM("SubflowStale", MPTCP_MIB_SUBFLOWSTALE), SNMP_MIB_ITEM("SubflowRecover", MPTCP_MIB_SUBFLOWRECOVER), SNMP_MIB_ITEM("SndWndShared", MPTCP_MIB_SNDWNDSHARED), + SNMP_MIB_ITEM("RcvWndShared", MPTCP_MIB_RCVWNDSHARED), + SNMP_MIB_ITEM("RcvWndConflictUpdate", MPTCP_MIB_RCVWNDCONFLICTUPDATE), + SNMP_MIB_ITEM("RcvWndConflict", MPTCP_MIB_RCVWNDCONFLICT), SNMP_MIB_SENTINEL }; diff --git a/net/mptcp/mib.h b/net/mptcp/mib.h index 2411510bef66..2be3596374f4 100644 --- a/net/mptcp/mib.h +++ b/net/mptcp/mib.h @@ -50,6 +50,11 @@ enum linux_mptcp_mib_field { MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */ MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */ MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */ + MPTCP_MIB_RCVWNDSHARED, /* Subflow rcv wnd is overridden by msk's one */ + MPTCP_MIB_RCVWNDCONFLICTUPDATE, /* subflow rcv wnd is overridden by msk's one due to + * conflict with another subflow while updating msk rcv wnd + */ + MPTCP_MIB_RCVWNDCONFLICT, /* Conflict with while updating msk rcv wnd */ __MPTCP_MIB_MAX }; diff --git a/net/mptcp/options.c b/net/mptcp/options.c index 3e3156cfe813..ac3b7b8a02f6 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -1248,8 +1248,11 @@ static void mptcp_set_rwin(struct tcp_sock *tp, struct tcphdr *th) if (rcv_wnd == rcv_wnd_old) break; - if (before64(rcv_wnd_new, rcv_wnd)) + if (before64(rcv_wnd_new, rcv_wnd)) { + MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_RCVWNDCONFLICTUPDATE); goto raise_win; + } + MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_RCVWNDCONFLICT); rcv_wnd_old = rcv_wnd; } return; @@ -1275,6 +1278,7 @@ raise_win: /* RFC1323 scaling applied */ new_win >>= tp->rx_opt.rcv_wscale; th->window = htons(new_win); + MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_RCVWNDSHARED); } } |