net: qrtr: Allow non-immediate node routing (0baa99ee) · Commits · 戴 / test

In order to reach non-immediate remote node services that are accessed through an intermediate node, the route to the remote node needs to be saved. E.g for a [node1 <=> node2 <=> node3] network - node2 forwards node3 service to node1 - node1 must save node2 as route for reaching node3 Signed-off-by:

Loic Poulain <loic.poulain@linaro.org> Reviewed-by:

Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by:

Jakub Kicinski <kuba@kernel.org>

net/qrtr/qrtr.c

+10 −2

Original line number	Diff line number	Diff line
		@@ -401,11 +401,12 @@ static void qrtr_node_assign(struct qrtr_node *node, unsigned int nid)
		{
		unsigned long flags;

		if (node->nid != QRTR_EP_NID_AUTO \|\| nid == QRTR_EP_NID_AUTO)
		if (nid == QRTR_EP_NID_AUTO)
		return;

		spin_lock_irqsave(&qrtr_nodes_lock, flags);
		radix_tree_insert(&qrtr_nodes, nid, node);
		if (node->nid == QRTR_EP_NID_AUTO)
		node->nid = nid;
		spin_unlock_irqrestore(&qrtr_nodes_lock, flags);
		}
		@@ -494,6 +495,13 @@ int qrtr_endpoint_post(struct qrtr_endpoint ep, const void data, size_t len)

		qrtr_node_assign(node, cb->src_node);

		if (cb->type == QRTR_TYPE_NEW_SERVER) {
		/* Remote node endpoint can bridge other distant nodes */
		const struct qrtr_ctrl_pkt *pkt = data + hdrlen;

		qrtr_node_assign(node, le32_to_cpu(pkt->server.node));
		}

		if (cb->type == QRTR_TYPE_RESUME_TX) {
		qrtr_tx_resume(node, skb);
		} else {

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