xiaoxiang781216 commented on code in PR #11103:
URL: https://github.com/apache/nuttx/pull/11103#discussion_r1378326012
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drivers/usrsock/usrsock_rpmsg_server.c:
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@@ -1042,28 +1068,84 @@ static void usrsock_rpmsg_ns_unbind(FAR struct
rpmsg_endpoint *ept)
kmm_free(ept);
}
-static int usrsock_rpmsg_ept_cb(FAR struct rpmsg_endpoint *ept,
- FAR void *data, size_t len, uint32_t src,
- FAR void *priv_)
+static int usrsock_rpmsg_ept_do_cb(FAR struct usrsock_rpmsg_ept_s *uept,
+ FAR void *data, size_t len, uint32_t src,
+ FAR struct usrsock_rpmsg_s *priv)
{
FAR struct usrsock_request_common_s *common = data;
- FAR struct usrsock_rpmsg_ept_s *uept =
- (FAR struct usrsock_rpmsg_ept_s *)ept;
- FAR struct usrsock_rpmsg_s *priv = priv_;
if (uept->remain > 0)
{
- return usrsock_rpmsg_sendto_handler(ept, data, len, src, priv);
+ return usrsock_rpmsg_sendto_handler(&uept->ept, data, len, src, priv);
}
else if (common->reqid >= 0 && common->reqid <= USRSOCK_REQUEST__MAX)
{
- return g_usrsock_rpmsg_handler[common->reqid](ept, data, len,
+ return g_usrsock_rpmsg_handler[common->reqid](&uept->ept, data, len,
src, priv);
}
return -EINVAL;
}
+static int usrsock_rpmsg_ept_cb(FAR struct rpmsg_endpoint *ept,
+ FAR void *data, size_t len, uint32_t src,
+ FAR void *priv_)
+{
+ FAR struct usrsock_rpmsg_s *priv = priv_;
+ FAR struct usrsock_rpmsg_ept_s *uept =
+ (FAR struct usrsock_rpmsg_ept_s *)ept;
+ FAR struct usrsock_rpmsg_req_s *req;
+ int ret;
+
+ /* This callback is called from only one thread per ept, so don't need any
+ * lock for `inuse` state.
+ */
+
+ if (uept->inuse)
+ {
+ /* Avoid recursive call. */
+
+ req = (FAR struct usrsock_rpmsg_req_s *)sq_remfirst(&uept->req_free);
+ if (req == NULL)
+ {
+ return -ENOMEM;
+ }
+
+ req->data = data;
+ req->len = len;
+ req->src = src;
+ sq_addlast(&req->flink, &uept->req_pending);
Review Comment:
Ok, you are right.
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