/*
* This is slightly less fun than the above..
*/
static inline unsigned long
csum_partial_cfu_src_aligned(const unsigned long __user *src,
unsigned long *dst,
unsigned long doff,
long len, unsigned long checksum,
unsigned long partial_dest,
int *errp)
{
unsigned long carry = 0;
unsigned long word;
unsigned long second_dest;
int err = 0;
mskql(partial_dest, doff, partial_dest);
while (len >= 0) {
err |= __get_user(word, src);
len -= 8;
insql(word, doff, second_dest);
checksum += carry;
stq_u(partial_dest | second_dest, dst);
src++;
checksum += word;
insqh(word, doff, partial_dest);
carry = checksum < word;
dst++;
}
len += 8;
if (len) {
checksum += carry;
err |= __get_user(word, src);
mskql(word, len, word);
len -= 8;
checksum += word;
insql(word, doff, second_dest);
len += doff;
carry = checksum < word;
partial_dest |= second_dest;
if (len >= 0) {
stq_u(partial_dest, dst);
if (!len) goto out;
dst++;
insqh(word, doff, partial_dest);
}
doff = len;
}
ldq_u(second_dest, dst);
mskqh(second_dest, doff, second_dest);
stq_u(partial_dest | second_dest, dst);
out:
checksum += carry;
if (err && errp) *errp = err;
return checksum;
}
void cmj_incoming_call(struct NTD *tsk)
{
int rval, rc;
struct CLB *lnk;
struct sockaddr_in in;
GTM_SOCKLEN_TYPE sz = SIZEOF(in);
cmi_status_t status;
while ((-1 == (rval = ACCEPT(tsk->listen_fd, (struct sockaddr *)&in, (GTM_SOCKLEN_TYPE *)&sz))) && EINTR == errno)
;
while (rval >= 0)
{
status = cmj_setupfd(rval);
if (CMI_ERROR(status))
{
CLOSEFILE_RESET(rval, rc); /* resets "rval" to FD_INVALID */
return;
}
status = cmj_set_async(rval);
if (CMI_ERROR(status))
{
CLOSEFILE_RESET(rval, rc); /* resets "rval" to FD_INVALID */
return;
}
/* grab a clb off of the free list */
lnk = cmi_alloc_clb();
if (!lnk || !tsk->acc || !tsk->acc(lnk) || !tsk->crq)
{
/* no point if the callbacks are not in place */
cmi_free_clb(lnk);
CLOSEFILE_RESET(rval, rc); /* resets "rval" to FD_INVALID */
return;
}
if (rval > tsk->max_fd)
tsk->max_fd = rval;
lnk->mun = rval;
lnk->sta = CM_CLB_IDLE;
lnk->peer = in;
insqh(&lnk->cqe, &tsk->cqh);
lnk->ntd = tsk;
FD_SET(rval, &tsk->es);
/* setup for callback processing */
lnk->deferred_event = TRUE;
lnk->deferred_reason = CMI_REASON_CONNECT;
while ((-1 == (rval = ACCEPT(tsk->listen_fd, (struct sockaddr *)&in, (GTM_SOCKLEN_TYPE *)&sz))) && EINTR == errno)
;
}
}
/*
* This is so totally un-fun that it's frightening. Don't
* look at this too closely, you'll go blind.
*/
static inline unsigned long
csum_partial_cfu_unaligned(const unsigned long __user * src,
unsigned long * dst,
unsigned long soff, unsigned long doff,
long len, unsigned long checksum,
unsigned long partial_dest,
int *errp)
{
unsigned long carry = 0;
unsigned long first;
unsigned long lastsrc;
int err = 0;
err |= __get_user_u(first, src);
lastsrc = 7+len+(unsigned long)src;
mskql(partial_dest, doff, partial_dest);
while (len >= 0) {
unsigned long second, word;
unsigned long second_dest;
err |= __get_user_u(second, src+1);
extql(first, soff, word);
checksum += carry;
len -= 8;
extqh(second, soff, first);
src++;
word |= first;
first = second;
insql(word, doff, second_dest);
checksum += word;
stq_u(partial_dest | second_dest, dst);
carry = checksum < word;
insqh(word, doff, partial_dest);
dst++;
}
len += doff;
checksum += carry;
if (len >= 0) {
unsigned long second, word;
unsigned long second_dest;
err |= __get_user_u(second, lastsrc);
extql(first, soff, word);
extqh(second, soff, first);
word |= first;
first = second;
mskql(word, len-doff, word);
checksum += word;
insql(word, doff, second_dest);
carry = checksum < word;
stq_u(partial_dest | second_dest, dst);
if (len) {
ldq_u(second_dest, dst+1);
insqh(word, doff, partial_dest);
mskqh(second_dest, len, second_dest);
stq_u(partial_dest | second_dest, dst+1);
}
checksum += carry;
} else {
unsigned long second, word;
unsigned long second_dest;
err |= __get_user_u(second, lastsrc);
extql(first, soff, word);
extqh(second, soff, first);
word |= first;
ldq_u(second_dest, dst);
mskql(word, len-doff, word);
checksum += word;
mskqh(second_dest, len, second_dest);
carry = checksum < word;
insql(word, doff, word);
stq_u(partial_dest | word | second_dest, dst);
checksum += carry;
}
if (err && errp) *errp = err;
return checksum;
}
