mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
4e58a65249
commit4dde0d72ccupstream. Without such counters, it is difficult to easily debug issues with MPJ not having the backup flags on production servers. This is not strictly a fix, but it eases to validate the following patches without requiring to take packet traces, to query ongoing connections with Netlink with admin permissions, or to guess by looking at the behaviour of the packet scheduler. Also, the modification is self contained, isolated, well controlled, and the increments are done just after others, there from the beginning. It looks then safe, and helpful to backport this. Fixes:4596a2c1b7("mptcp: allow creating non-backup subflows") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com> [ Conflicts in subflow.c because the context has changed in commitb3ea6b272d("mptcp: consolidate initial ack seq generation") which is not in this version. This commit is unrelated to this modification. ] Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
108 lines
4.1 KiB
C
108 lines
4.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#include <linux/seq_file.h>
|
|
#include <net/ip.h>
|
|
#include <net/mptcp.h>
|
|
#include <net/snmp.h>
|
|
#include <net/net_namespace.h>
|
|
|
|
#include "mib.h"
|
|
|
|
static const struct snmp_mib mptcp_snmp_list[] = {
|
|
SNMP_MIB_ITEM("MPCapableSYNRX", MPTCP_MIB_MPCAPABLEPASSIVE),
|
|
SNMP_MIB_ITEM("MPCapableSYNTX", MPTCP_MIB_MPCAPABLEACTIVE),
|
|
SNMP_MIB_ITEM("MPCapableSYNACKRX", MPTCP_MIB_MPCAPABLEACTIVEACK),
|
|
SNMP_MIB_ITEM("MPCapableACKRX", MPTCP_MIB_MPCAPABLEPASSIVEACK),
|
|
SNMP_MIB_ITEM("MPCapableFallbackACK", MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK),
|
|
SNMP_MIB_ITEM("MPCapableFallbackSYNACK", MPTCP_MIB_MPCAPABLEACTIVEFALLBACK),
|
|
SNMP_MIB_ITEM("MPFallbackTokenInit", MPTCP_MIB_TOKENFALLBACKINIT),
|
|
SNMP_MIB_ITEM("MPTCPRetrans", MPTCP_MIB_RETRANSSEGS),
|
|
SNMP_MIB_ITEM("MPJoinNoTokenFound", MPTCP_MIB_JOINNOTOKEN),
|
|
SNMP_MIB_ITEM("MPJoinSynRx", MPTCP_MIB_JOINSYNRX),
|
|
SNMP_MIB_ITEM("MPJoinSynBackupRx", MPTCP_MIB_JOINSYNBACKUPRX),
|
|
SNMP_MIB_ITEM("MPJoinSynAckRx", MPTCP_MIB_JOINSYNACKRX),
|
|
SNMP_MIB_ITEM("MPJoinSynAckBackupRx", MPTCP_MIB_JOINSYNACKBACKUPRX),
|
|
SNMP_MIB_ITEM("MPJoinSynAckHMacFailure", MPTCP_MIB_JOINSYNACKMAC),
|
|
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),
|
|
SNMP_MIB_ITEM("OFOQueueTail", MPTCP_MIB_OFOQUEUETAIL),
|
|
SNMP_MIB_ITEM("OFOQueue", MPTCP_MIB_OFOQUEUE),
|
|
SNMP_MIB_ITEM("OFOMerge", MPTCP_MIB_OFOMERGE),
|
|
SNMP_MIB_ITEM("NoDSSInWindow", MPTCP_MIB_NODSSWINDOW),
|
|
SNMP_MIB_ITEM("DuplicateData", MPTCP_MIB_DUPDATA),
|
|
SNMP_MIB_ITEM("AddAddr", MPTCP_MIB_ADDADDR),
|
|
SNMP_MIB_ITEM("EchoAdd", MPTCP_MIB_ECHOADD),
|
|
SNMP_MIB_ITEM("PortAdd", MPTCP_MIB_PORTADD),
|
|
SNMP_MIB_ITEM("AddAddrDrop", MPTCP_MIB_ADDADDRDROP),
|
|
SNMP_MIB_ITEM("MPJoinPortSynRx", MPTCP_MIB_JOINPORTSYNRX),
|
|
SNMP_MIB_ITEM("MPJoinPortSynAckRx", MPTCP_MIB_JOINPORTSYNACKRX),
|
|
SNMP_MIB_ITEM("MPJoinPortAckRx", MPTCP_MIB_JOINPORTACKRX),
|
|
SNMP_MIB_ITEM("MismatchPortSynRx", MPTCP_MIB_MISMATCHPORTSYNRX),
|
|
SNMP_MIB_ITEM("MismatchPortAckRx", MPTCP_MIB_MISMATCHPORTACKRX),
|
|
SNMP_MIB_ITEM("RmAddr", MPTCP_MIB_RMADDR),
|
|
SNMP_MIB_ITEM("RmAddrDrop", MPTCP_MIB_RMADDRDROP),
|
|
SNMP_MIB_ITEM("RmSubflow", MPTCP_MIB_RMSUBFLOW),
|
|
SNMP_MIB_ITEM("MPPrioTx", MPTCP_MIB_MPPRIOTX),
|
|
SNMP_MIB_ITEM("MPPrioRx", MPTCP_MIB_MPPRIORX),
|
|
SNMP_MIB_ITEM("MPFailTx", MPTCP_MIB_MPFAILTX),
|
|
SNMP_MIB_ITEM("MPFailRx", MPTCP_MIB_MPFAILRX),
|
|
SNMP_MIB_ITEM("MPFastcloseTx", MPTCP_MIB_MPFASTCLOSETX),
|
|
SNMP_MIB_ITEM("MPFastcloseRx", MPTCP_MIB_MPFASTCLOSERX),
|
|
SNMP_MIB_ITEM("MPRstTx", MPTCP_MIB_MPRSTTX),
|
|
SNMP_MIB_ITEM("MPRstRx", MPTCP_MIB_MPRSTRX),
|
|
SNMP_MIB_ITEM("RcvPruned", MPTCP_MIB_RCVPRUNED),
|
|
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
|
|
};
|
|
|
|
/* mptcp_mib_alloc - allocate percpu mib counters
|
|
*
|
|
* These are allocated when the first mptcp socket is created so
|
|
* we do not waste percpu memory if mptcp isn't in use.
|
|
*/
|
|
bool mptcp_mib_alloc(struct net *net)
|
|
{
|
|
struct mptcp_mib __percpu *mib = alloc_percpu(struct mptcp_mib);
|
|
|
|
if (!mib)
|
|
return false;
|
|
|
|
if (cmpxchg(&net->mib.mptcp_statistics, NULL, mib))
|
|
free_percpu(mib);
|
|
|
|
return true;
|
|
}
|
|
|
|
void mptcp_seq_show(struct seq_file *seq)
|
|
{
|
|
unsigned long sum[ARRAY_SIZE(mptcp_snmp_list) - 1];
|
|
struct net *net = seq->private;
|
|
int i;
|
|
|
|
seq_puts(seq, "MPTcpExt:");
|
|
for (i = 0; mptcp_snmp_list[i].name; i++)
|
|
seq_printf(seq, " %s", mptcp_snmp_list[i].name);
|
|
|
|
seq_puts(seq, "\nMPTcpExt:");
|
|
|
|
memset(sum, 0, sizeof(sum));
|
|
if (net->mib.mptcp_statistics)
|
|
snmp_get_cpu_field_batch(sum, mptcp_snmp_list,
|
|
net->mib.mptcp_statistics);
|
|
|
|
for (i = 0; mptcp_snmp_list[i].name; i++)
|
|
seq_printf(seq, " %lu", sum[i]);
|
|
|
|
seq_putc(seq, '\n');
|
|
}
|