Hi all,
I want to implement a package filtering hook in opensolaris2009.06 111b,
and I download Darren's full.c from website, and write my own code, then
compile and install the module, but after install the my hook module, the cpu
usage is 90%, and can't do anything.
at first, I think maybe something wrong in my code, and I build Darren's
full.c, and install it, unfortunately, it's same, the cpu usage is 90%. I don't
why. who can tell me what's wrong in my code or Makefile?
wl...@opensolaris2009:~/projects/msanet2.2# cc -V
cc: Sun C 5.10 SunOS_i386 2009/06/03
usage: cc [ options] files. Use 'cc -flags' for details
wl...@opensolaris2009:~/projects/msanet2.2# isainfo -b
64
wl...@opensolaris2009:~/projects/msanet2.2# psrinfo -pv
The physical processor has 2 virtual processors (0 1)
x86 (GenuineIntel F4A family 15 model 4 step 10 clock 3200 MHz)
Intel(r) Pentium(r) 4 CPU 3.20GHz
wl...@opensolaris2009:~/projects/msanet2.2# uname -a
SunOS opensolaris2009 5.11 snv_111b i86pc i386 i86pc
====== before install msahook module, cpu usage =========
wl...@opensolaris2009:~/projects/msanet2.2# mpstat 5
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
0 442 0 31 394 168 734 29 41 41 0 2055 7 4 0 89
1 377 0 10 141 36 749 28 42 39 0 1979 6 3 0 91
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
0 0 0 3 307 104 146 1 9 1 0 146 1 0 0 99
1 5 0 2 84 38 110 1 9 1 0 269 1 0 0 98
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
0 0 0 2 340 139 152 1 10 2 0 152 1 1 0 98
1 0 0 2 95 41 210 2 11 3 0 381 2 0 0 98
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
0 0 0 2 305 103 128 2 12 1 0 188 1 1 0 99
1 6 0 0 91 32 128 3 11 1 0 228 3 0 0 97
====== after install msahook module, cpu usage ==========
the idl value is 10~20, it means the dual cpu are very busy, but I don't know
what they busy for.
====== Source Code ==============
#include "msa_hook.h"
#include "msa_debug.h"
net_instance_t *msahook = NULL;
msahook_ctx_t *msactx = NULL;
msahook_table_t disptable[5000] = {0x0}; // 5000 is for test, will modify later
uint32_t disptable_index = 0;
kmutex_t disptable_mutex;
static void * msahook_create(const netid_t);
static void msahook_destroy(const netid_t, void*);
static void msahook_shutdown(const netid_t, void*);
static int msahook_protocol(hook_notify_cmd_t cmd, void *arg, const char* proto,
const char* event, const char* hook);
static int msahook_event(hook_notify_cmd_t cmd, void *arg, const char* parent,
const char* event, const char *hook);
static struct modldrv modlmisc = {
&mod_miscops,
"msahook module v1.0",
};
static struct modlinkage modlinkage = {
MODREV_1,
&modlmisc,
NULL
};
int _init(void)
{
MSA_DEBUG1(">>>_init");
msahook = net_instance_alloc(NETINFO_VERSION);
if (msahook != NULL)
{
msahook->nin_create = msahook_create;
msahook->nin_shutdown = msahook_shutdown;
msahook->nin_destroy= msahook_destroy;
msahook->nin_name = "msahook dispatcher";
if (net_instance_register(msahook) != DDI_SUCCESS)
{
MSA_DEBUG1("net_instance_register failed.");
net_instance_free(msahook);
}
}
mod_install(&modlinkage);
MSA_DEBUG1("<<<_init");
}
int _fini(void)
{
MSA_DEBUG1(">>>_fini");
mod_remove(&modlinkage);
MSA_DEBUG1("<<<_fini");
}
int _info(struct modinfo *info)
{
MSA_DEBUG1(">>>_info");
MSA_DEBUG1("<<<_info");
return (0);
}
void * msahook_create(const netid_t id)
{
MSA_DEBUG1(">>>msahook_create");
msahook_ctx_t *ctx = NULL;
int rv = 0;
ctx = kmem_zalloc(sizeof(msahook_ctx_t), KM_SLEEP);
ctx->instance_id = id;
ctx->kssl_addr.s_addr = htonl(KSSL_DEFAULT_ADDR);
ctx->kssl_port = htons(KSSL_DEFAULT_PORT);
ctx->msa_addr.s_addr = htonl(MSA_DEFAULT_ADDR);
ctx->msa_port = htons(MSA_DEFAULT_PORT);
MSA_DEBUG2("Allocate ctx - 0x%p", ctx);
rv = net_instance_notify_register(id, msahook_protocol, ctx);
MSA_DEBUG2("<<<msahook_create - rv: %d", rv);
//msactx = ctx; // save as global context.
return (ctx);
}
void msahook_destroy(const netid_t id, void* arg)
{
MSA_DEBUG1(">>>msahook_destroy");
msahook_ctx_t *ctx = arg;
kmem_free(ctx, sizeof(*ctx));
MSA_DEBUG1("<<<msahook_destroy");
}
void msahook_shutdown(const netid_t id, void* arg)
{
MSA_DEBUG1(">>>msahook_shutdown");
msahook_ctx_t *ctx = arg;
net_instance_notify_unregister(id, msahook_protocol);
if (ctx->v4 != NULL)
{
if (ctx->hook_in != NULL)
{
net_hook_unregister(ctx->v4, NH_PHYSICAL_IN, ctx->hook_in);
hook_free(ctx->hook_in);
ctx->hook_in = NULL;
}
if (ctx->hook_out != NULL)
{
net_hook_unregister(ctx->v4, NH_PHYSICAL_OUT, ctx->hook_out);
hook_free(ctx->hook_out);
ctx->hook_out = NULL;
}
}
MSA_DEBUG1("<<<msahook_shutdown");
}
static int msahook_protocol(hook_notify_cmd_t cmd, void *arg, const char* proto,
const char* event, const char* hook)
{
MSA_DEBUG1(">>>msahook_protocol");
msahook_ctx_t *ctx = arg;
if (ctx == NULL)
{
MSA_DEBUG1("ctx is NULL");
return (0);
}
if (strcmp(proto, NHF_INET) != 0)
{
MSA_DEBUG2("protocol is not NHF_INET - %s", proto);
return (0);
}
switch(cmd)
{
case HN_REGISTER:
ctx->v4 = net_protocol_lookup(ctx->instance_id, proto);
net_protocol_notify_register(ctx->v4, msahook_event, ctx);
break;
case HN_UNREGISTER:
case HN_NONE:
break;
}
MSA_DEBUG1("<<<msahook_protocol");
return (0);
}
static int msahook_pkthook(hook_event_token_t tok, hook_data_t data, void *ctx)
{
MSA_DEBUG1(">>>msahook_pkthook");
MSA_DEBUG1("<<<msahook_pkthook");
return (0);
}
static int msahook_event(hook_notify_cmd_t cmd, void *arg, const char* parent,
const char* event, const char *hook)
{
MSA_DEBUG1(">>>msahook_event");
msahook_ctx_t *ctx = arg;
//char buffer[32] = {0x00};
hook_t *hinc, *hout;
// all incoming and IPv4 packages
if( (strcmp(event, NH_PHYSICAL_IN) == 0) && (strcmp(parent, NHF_INET) == 0)
)
{
//sprintf(buffer, "msahook_inc_%s_%s", parent, event);
hinc = hook_alloc(HOOK_VERSION);
hinc->h_hint = HH_NONE;
hinc->h_arg = ctx;
hinc->h_name = "msahook_inc";//strdup(buffer);
hinc->h_func = msahook_pkthook;
ctx->hook_in = hinc;
net_hook_register(ctx->v4, (char*)event, hinc);
}
else
{
hinc = NULL;
hout = NULL;
}
MSA_DEBUG1("<<<msahook_event");
return (0);
}
========= Makefile ==================
ECHO= echo
INS= install
TRUE= true
SYMLINK= /usr/bin/ln -s
LN= /usr/bin/ln
CHMOD= /usr/bin/chmod
CHOWN= $(TRUE)
CHGRP= $(TRUE)
MV= /usr/bin/mv -f
RM= /usr/bin/rm -f
CUT= /usr/bin/cut
NM= /usr/ccs/bin/nm
DIFF= /usr/bin/diff
GREP= /usr/bin/grep
EGREP= /usr/bin/egrep
SED= /usr/bin/sed
NAWK= /usr/bin/nawk
CP= /usr/bin/cp -f
MCS= /usr/ccs/bin/mcs
CAT= /usr/bin/cat
M4= /usr/ccs/bin/m4
STRIP= /usr/ccs/bin/strip
LEX= /usr/ccs/bin/lex
YACC= /usr/ccs/bin/yacc
CPP= /usr/lib/cpp
## Build command
CC= cc
LD= ld
#
# compiler '-xarch' flag. This is here to centralize it and make it
# overridable for testing.
sparc_XARCH= -xarch=v8
sparcv9_XARCH= -xarch=v9
i386_XARCH=
amd64_XARCH= -m64 -Ui386 -U__i386 ##-xarch=amd64
#
sparc_COPTFLAG= -xO3
sparcv9_COPTFLAG= -xO3
i386_COPTFLAG= -O
amd64_COPTFLAG= -xO3
COPTFLAG= $($(MACH)_COPTFLAG)
COPTFLAG64= $($(MACH64)_COPTFLAG)
###
amd64_CFLAGS= -xmodel=kernel $(amd64_XARCH)
i386_64_CFLAGS= -xmodel=kernel $(amd64_XARCH)
amd_64_CFLAGS= -xmodel=kernel $(amd64_XARCH)
sparcv9_CFLAGS= -xarch=v9
CFLAGS += -D_KERNEL $($(MACH)_$(ISA)_CFLAGS) -DDEBUG #-D_MULTI_DATAMODEL=1
LDFLAGS += -r -dy -Nmisc/neti -Nmisc/hook
#### All target create the ultimate file ####
all: msahook
## Target: msanet hook
msahook:msa_hook.o
$(LD) $(LDFLAGS) -o msahook msa_hook.o
msa_hook.o:msa_hook.c
$(CC) $(CFLAGS) -c msa_hook.c -I../include
#### Clean target deletes all generated files ####
clean:
$(RM) msahook *.o *~ *.*~
# Enable dependency checking
#.KEEP_STATE:
#.KEEP_STATE_FILE:.make.state.Sun-x86-Solaris
============= Trace Message /var/adm/messages ===========
Dec 10 17:38:05 opensolaris2009 msahook: [ID 202340 kern.notice] >>>_info
Dec 10 17:38:05 opensolaris2009 msahook: [ID 395548 kern.notice] <<<_info
Dec 10 17:38:05 opensolaris2009 msahook: [ID 564022 kern.notice] >>>_init
Dec 10 17:38:05 opensolaris2009 msahook: [ID 877698 kern.notice]
>>>msahook_create
Dec 10 17:38:05 opensolaris2009 msahook: [ID 365319 kern.notice] allocate ctx -
0xffffff0114bbf138
Dec 10 17:38:05 opensolaris2009 msahook: [ID 539202 kern.notice]
<<<msahook_create - rv: 0
Dec 10 17:38:05 opensolaris2009 msahook: [ID 757230 kern.notice] <<<_init
------> I don't know why msahook_protocol didn't be called?????
--
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