int ramster_remote_async_get(struct tmem_xhandle *xh, bool free, int remotenode,
size_t expect_size, uint8_t expect_cksum,
void *extra)
{
int ret = -1, status;
struct r2nm_node *node = NULL;
struct kvec vec[1];
size_t veclen = 1;
u32 msg_type;
node = r2nm_get_node_by_num(remotenode);
if (node == NULL)
goto out;
xh->client_id = r2nm_this_node(); /* which node is getting */
xh->xh_data_cksum = expect_cksum;
xh->xh_data_size = expect_size;
xh->extra = extra;
vec[0].iov_len = sizeof(*xh);
vec[0].iov_base = xh;
if (free)
msg_type = RMSTR_TMEM_ASYNC_GET_AND_FREE_REQUEST;
else
msg_type = RMSTR_TMEM_ASYNC_GET_REQUEST;
ret = r2net_send_message_vec(msg_type, RMSTR_KEY,
vec, veclen, remotenode, &status);
r2nm_node_put(node);
if (ret < 0) {
/* FIXME handle bad message possibilities here? */
pr_err("UNTESTED ret<0 in ramster_remote_async_get\n");
}
ret = status;
out:
return ret;
}
int ramster_remote_flush_object(struct tmem_xhandle *xh, int remotenode)
{
int ret = -1, status;
struct r2nm_node *node = NULL;
struct kvec vec[1];
size_t veclen = 1;
node = r2nm_get_node_by_num(remotenode);
BUG_ON(node == NULL);
xh->client_id = r2nm_this_node(); /* which node is flobjing */
vec[0].iov_len = sizeof(*xh);
vec[0].iov_base = xh;
ret = r2net_send_message_vec(RMSTR_TMEM_FLOBJ, RMSTR_KEY,
vec, veclen, remotenode, &status);
r2nm_node_put(node);
return ret;
}
int ramster_remote_flush(struct tmem_xhandle *xh, int remotenode)
{
int ret = -1, status;
struct r2nm_node *node = NULL;
struct kvec vec[1];
size_t veclen = 1;
node = r2nm_get_node_by_num(remotenode);
BUG_ON(node == NULL);
xh->client_id = r2nm_this_node(); /* */
vec[0].iov_len = sizeof(*xh);
vec[0].iov_base = xh;
BUG_ON(irqs_disabled());
BUG_ON(in_softirq());
ret = r2net_send_message_vec(RMSTR_TMEM_FLUSH, RMSTR_KEY,
vec, veclen, remotenode, &status);
r2nm_node_put(node);
return ret;
}
int ramster_remote_put(struct tmem_xhandle *xh, char *data, size_t size,
bool ephemeral, int *remotenode)
{
int nodenum, ret = -1, status;
struct r2nm_node *node = NULL;
struct kvec vec[2];
size_t veclen = 2;
u32 msg_type;
#ifdef RAMSTER_TESTING
struct r2net_node *nn;
#endif
BUG_ON(size > RMSTR_R2NET_MAX_LEN);
xh->client_id = r2nm_this_node(); /* which node is putting */
vec[0].iov_len = sizeof(*xh);
vec[0].iov_base = xh;
vec[1].iov_len = size;
vec[1].iov_base = data;
node = r2net_target_node;
if (!node)
goto out;
nodenum = r2net_target_nodenum;
r2nm_node_get(node);
#ifdef RAMSTER_TESTING
nn = r2net_nn_from_num(nodenum);
WARN_ON_ONCE(nn->nn_persistent_error || !nn->nn_sc_valid);
#endif
if (ephemeral)
msg_type = RMSTR_TMEM_PUT_EPH;
else
msg_type = RMSTR_TMEM_PUT_PERS;
#ifdef RAMSTER_TESTING
/* leave me here to see if it catches a weird crash */
ramster_check_irq_counts();
#endif
ret = r2net_send_message_vec(msg_type, RMSTR_KEY, vec, veclen,
nodenum, &status);
#ifdef RAMSTER_TESTING
if (ret != 0) {
static unsigned long cnt;
cnt++;
if (!(cnt&(cnt-1)))
pr_err("ramster_remote_put: message failed, "
"ret=%d, cnt=%lu\n", ret, cnt);
ret = -1;
}
#endif
if (ret < 0)
ret = -1;
else {
ret = status;
*remotenode = nodenum;
}
r2nm_node_put(node);
out:
return ret;
}
