cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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mib.c (4107B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2
      3#include <linux/seq_file.h>
      4#include <net/ip.h>
      5#include <net/mptcp.h>
      6#include <net/snmp.h>
      7#include <net/net_namespace.h>
      8
      9#include "mib.h"
     10
     11static const struct snmp_mib mptcp_snmp_list[] = {
     12	SNMP_MIB_ITEM("MPCapableSYNRX", MPTCP_MIB_MPCAPABLEPASSIVE),
     13	SNMP_MIB_ITEM("MPCapableSYNTX", MPTCP_MIB_MPCAPABLEACTIVE),
     14	SNMP_MIB_ITEM("MPCapableSYNACKRX", MPTCP_MIB_MPCAPABLEACTIVEACK),
     15	SNMP_MIB_ITEM("MPCapableACKRX", MPTCP_MIB_MPCAPABLEPASSIVEACK),
     16	SNMP_MIB_ITEM("MPCapableFallbackACK", MPTCP_MIB_MPCAPABLEPASSIVEFALLBACK),
     17	SNMP_MIB_ITEM("MPCapableFallbackSYNACK", MPTCP_MIB_MPCAPABLEACTIVEFALLBACK),
     18	SNMP_MIB_ITEM("MPFallbackTokenInit", MPTCP_MIB_TOKENFALLBACKINIT),
     19	SNMP_MIB_ITEM("MPTCPRetrans", MPTCP_MIB_RETRANSSEGS),
     20	SNMP_MIB_ITEM("MPJoinNoTokenFound", MPTCP_MIB_JOINNOTOKEN),
     21	SNMP_MIB_ITEM("MPJoinSynRx", MPTCP_MIB_JOINSYNRX),
     22	SNMP_MIB_ITEM("MPJoinSynAckRx", MPTCP_MIB_JOINSYNACKRX),
     23	SNMP_MIB_ITEM("MPJoinSynAckHMacFailure", MPTCP_MIB_JOINSYNACKMAC),
     24	SNMP_MIB_ITEM("MPJoinAckRx", MPTCP_MIB_JOINACKRX),
     25	SNMP_MIB_ITEM("MPJoinAckHMacFailure", MPTCP_MIB_JOINACKMAC),
     26	SNMP_MIB_ITEM("DSSNotMatching", MPTCP_MIB_DSSNOMATCH),
     27	SNMP_MIB_ITEM("InfiniteMapTx", MPTCP_MIB_INFINITEMAPTX),
     28	SNMP_MIB_ITEM("InfiniteMapRx", MPTCP_MIB_INFINITEMAPRX),
     29	SNMP_MIB_ITEM("DSSNoMatchTCP", MPTCP_MIB_DSSTCPMISMATCH),
     30	SNMP_MIB_ITEM("DataCsumErr", MPTCP_MIB_DATACSUMERR),
     31	SNMP_MIB_ITEM("OFOQueueTail", MPTCP_MIB_OFOQUEUETAIL),
     32	SNMP_MIB_ITEM("OFOQueue", MPTCP_MIB_OFOQUEUE),
     33	SNMP_MIB_ITEM("OFOMerge", MPTCP_MIB_OFOMERGE),
     34	SNMP_MIB_ITEM("NoDSSInWindow", MPTCP_MIB_NODSSWINDOW),
     35	SNMP_MIB_ITEM("DuplicateData", MPTCP_MIB_DUPDATA),
     36	SNMP_MIB_ITEM("AddAddr", MPTCP_MIB_ADDADDR),
     37	SNMP_MIB_ITEM("EchoAdd", MPTCP_MIB_ECHOADD),
     38	SNMP_MIB_ITEM("PortAdd", MPTCP_MIB_PORTADD),
     39	SNMP_MIB_ITEM("AddAddrDrop", MPTCP_MIB_ADDADDRDROP),
     40	SNMP_MIB_ITEM("MPJoinPortSynRx", MPTCP_MIB_JOINPORTSYNRX),
     41	SNMP_MIB_ITEM("MPJoinPortSynAckRx", MPTCP_MIB_JOINPORTSYNACKRX),
     42	SNMP_MIB_ITEM("MPJoinPortAckRx", MPTCP_MIB_JOINPORTACKRX),
     43	SNMP_MIB_ITEM("MismatchPortSynRx", MPTCP_MIB_MISMATCHPORTSYNRX),
     44	SNMP_MIB_ITEM("MismatchPortAckRx", MPTCP_MIB_MISMATCHPORTACKRX),
     45	SNMP_MIB_ITEM("RmAddr", MPTCP_MIB_RMADDR),
     46	SNMP_MIB_ITEM("RmAddrDrop", MPTCP_MIB_RMADDRDROP),
     47	SNMP_MIB_ITEM("RmSubflow", MPTCP_MIB_RMSUBFLOW),
     48	SNMP_MIB_ITEM("MPPrioTx", MPTCP_MIB_MPPRIOTX),
     49	SNMP_MIB_ITEM("MPPrioRx", MPTCP_MIB_MPPRIORX),
     50	SNMP_MIB_ITEM("MPFailTx", MPTCP_MIB_MPFAILTX),
     51	SNMP_MIB_ITEM("MPFailRx", MPTCP_MIB_MPFAILRX),
     52	SNMP_MIB_ITEM("MPFastcloseTx", MPTCP_MIB_MPFASTCLOSETX),
     53	SNMP_MIB_ITEM("MPFastcloseRx", MPTCP_MIB_MPFASTCLOSERX),
     54	SNMP_MIB_ITEM("MPRstTx", MPTCP_MIB_MPRSTTX),
     55	SNMP_MIB_ITEM("MPRstRx", MPTCP_MIB_MPRSTRX),
     56	SNMP_MIB_ITEM("RcvPruned", MPTCP_MIB_RCVPRUNED),
     57	SNMP_MIB_ITEM("SubflowStale", MPTCP_MIB_SUBFLOWSTALE),
     58	SNMP_MIB_ITEM("SubflowRecover", MPTCP_MIB_SUBFLOWRECOVER),
     59	SNMP_MIB_ITEM("SndWndShared", MPTCP_MIB_SNDWNDSHARED),
     60	SNMP_MIB_ITEM("RcvWndShared", MPTCP_MIB_RCVWNDSHARED),
     61	SNMP_MIB_ITEM("RcvWndConflictUpdate", MPTCP_MIB_RCVWNDCONFLICTUPDATE),
     62	SNMP_MIB_ITEM("RcvWndConflict", MPTCP_MIB_RCVWNDCONFLICT),
     63	SNMP_MIB_SENTINEL
     64};
     65
     66/* mptcp_mib_alloc - allocate percpu mib counters
     67 *
     68 * These are allocated when the first mptcp socket is created so
     69 * we do not waste percpu memory if mptcp isn't in use.
     70 */
     71bool mptcp_mib_alloc(struct net *net)
     72{
     73	struct mptcp_mib __percpu *mib = alloc_percpu(struct mptcp_mib);
     74
     75	if (!mib)
     76		return false;
     77
     78	if (cmpxchg(&net->mib.mptcp_statistics, NULL, mib))
     79		free_percpu(mib);
     80
     81	return true;
     82}
     83
     84void mptcp_seq_show(struct seq_file *seq)
     85{
     86	unsigned long sum[ARRAY_SIZE(mptcp_snmp_list) - 1];
     87	struct net *net = seq->private;
     88	int i;
     89
     90	seq_puts(seq, "MPTcpExt:");
     91	for (i = 0; mptcp_snmp_list[i].name; i++)
     92		seq_printf(seq, " %s", mptcp_snmp_list[i].name);
     93
     94	seq_puts(seq, "\nMPTcpExt:");
     95
     96	memset(sum, 0, sizeof(sum));
     97	if (net->mib.mptcp_statistics)
     98		snmp_get_cpu_field_batch(sum, mptcp_snmp_list,
     99					 net->mib.mptcp_statistics);
    100
    101	for (i = 0; mptcp_snmp_list[i].name; i++)
    102		seq_printf(seq, " %lu", sum[i]);
    103
    104	seq_putc(seq, '\n');
    105}