From 77f7d990485b45c40a0d81c253b14b1d0ff8ecb8 Mon Sep 17 00:00:00 2001
From: Sylvain Rochet <gradator@gradator.net>
Date: Wed, 11 Mar 2015 09:28:35 +0100
Subject: [PATCH] PPP, PPPoS, add pppos_input_tcpip() input helper function for
 !NO_SYS users

---
 src/include/netif/ppp/pppos.h |  5 +++++
 src/netif/ppp/pppos.c         | 29 ++++++++++++++++++++++++++++-
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/src/include/netif/ppp/pppos.h b/src/include/netif/ppp/pppos.h
index f6747da0..df434d5d 100644
--- a/src/include/netif/ppp/pppos.h
+++ b/src/include/netif/ppp/pppos.h
@@ -103,6 +103,11 @@ struct pppos_pcb_s {
 ppp_pcb *pppos_create(struct netif *pppif, sio_fd_t fd,
        ppp_link_status_cb_fn link_status_cb, void *ctx_cb);
 
+#if !NO_SYS
+/* Pass received raw characters to PPPoS to be decoded through lwIP TCPIP thread. */
+err_t pppos_input_tcpip(ppp_pcb *ppp, u_char *s, int l);
+#endif /* !NO_SYS */
+
 /* PPP over Serial: this is the input function to be called for received data. */
 void pppos_input(ppp_pcb *ppp, u_char* data, int len);
 
diff --git a/src/netif/ppp/pppos.c b/src/netif/ppp/pppos.c
index bb4badb3..e1483042 100644
--- a/src/netif/ppp/pppos.c
+++ b/src/netif/ppp/pppos.c
@@ -528,6 +528,33 @@ pppos_destroy(ppp_pcb *ppp, void *ctx)
 }
 
 #if !NO_SYS
+/** Pass received raw characters to PPPoS to be decoded through lwIP TCPIP thread.
+ *
+ * @param pcb PPP descriptor index, returned by pppos_create()
+ * @param data received data
+ * @param len length of received data
+ */
+err_t
+pppos_input_tcpip(ppp_pcb *ppp, u_char *s, int l)
+{
+  struct pbuf *p, *n;
+  u8_t *cur;
+
+  p = pbuf_alloc(PBUF_RAW, l, PBUF_POOL);
+  if (!p) {
+    return ERR_MEM;
+  }
+
+  cur = s;
+  for (n = p; n; n = n->next) {
+    MEMCPY(n->payload, cur, n->len);
+    cur += n->len;
+  }
+
+  return tcpip_input(p, ppp_netif(ppp));
+}
+
+/* called from TCPIP thread */
 static err_t pppos_input_sys(struct pbuf *p, struct netif *inp) {
   ppp_pcb *ppp = (ppp_pcb*)inp->state;
   struct pbuf *n;
@@ -565,7 +592,7 @@ PACK_STRUCT_END
  * thread safe. You should also avoid calling pppos_input() if PPPoS session
  * is not started yet.
  *
- * @param pcb PPP descriptor index, returned by ppp_new()
+ * @param pcb PPP descriptor index, returned by pppos_create()
  * @param data received data
  * @param len length of received data
  */