Merge b1f63fe9b2c299194fb1b1e05f790e0657f4468b into a6c3a9cbbb5e0a99e0d30e58271f27a0d4e9ae90

Make it easier to run a PPP server and client on different interfaces by
adding the interface name to logs and expose the PPP passive option.

components/esp_netif/include/esp_netif_ppp.h

@@ -31,6 +31,9 @@ typedef struct esp_netif_ppp_config {
 #ifdef CONFIG_LWIP_PPP_SERVER_SUPPORT
     esp_ip4_addr_t ppp_our_ip4_addr;   /**< Set our preferred address, typically used when we're the PPP server */
     esp_ip4_addr_t ppp_their_ip4_addr; /**< Set our preferred address, typically used when we're the PPP server */
+    esp_ip4_addr_t ppp_dns1_addr;      /**< DNS to provide if peer asks for it, typically used when we're the PPP server */
+    esp_ip4_addr_t ppp_dns2_addr;      /**< DNS to provide if peer asks for it, typically used when we're the PPP server */
+    bool ppp_passive;                  /**< Try once to initiate connection, stay silent if it fails, typically used when we're the PPP server */
 #endif // CONFIG_LWIP_PPP_SERVER_SUPPORT
 } esp_netif_ppp_config_t;
 

components/esp_netif/lwip/esp_netif_lwip_ppp.c

@@ -37,6 +37,9 @@ typedef struct lwip_peer2peer_ctx {
 #ifdef CONFIG_LWIP_PPP_SERVER_SUPPORT
     esp_ip4_addr_t ppp_our_ip4_addr;      // our desired IP (IPADDR_ANY if no preference)
     esp_ip4_addr_t ppp_their_ip4_addr;    // their desired IP (IPADDR_ANY if no preference)
+    esp_ip4_addr_t ppp_dns1_addr;         // dns server 1 IP (IPADDR_ANY if no preference)
+    esp_ip4_addr_t ppp_dns2_addr;         // dns server 2 IP (IPADDR_ANY if no preference)
+    bool ppp_passive;                     // Set ppp_passive() and use ppp_listen()
 #endif
     ppp_pcb *ppp;
 } lwip_peer2peer_ctx_t;
@@ -48,6 +51,7 @@ typedef struct lwip_peer2peer_ctx {
 static void on_ppp_status_changed(ppp_pcb *pcb, int err_code, void *ctx)
 {
     esp_netif_t *netif = ctx;
+    const char *name = netif->if_desc ? netif->if_desc : "";
     ip_event_got_ip_t evt = {
             .esp_netif = netif,
     };
@@ -56,59 +60,59 @@ static void on_ppp_status_changed(ppp_pcb *pcb, int err_code, void *ctx)
     assert(obj->base.netif_type == PPP_LWIP_NETIF);
     switch (err_code) {
         case PPPERR_NONE:
-            ESP_LOGI(TAG, "Connected");
+            ESP_LOGI(TAG, "%s: Connected", name);
             break;
         case PPPERR_PARAM:
-            ESP_LOGE(TAG, "Invalid parameter");
+            ESP_LOGE(TAG, "%s: Invalid parameter", name);
             break;
         case PPPERR_OPEN:
-            ESP_LOGE(TAG, "Unable to open PPP session");
+            ESP_LOGE(TAG, "%s: Unable to open PPP session", name);
             break;
         case PPPERR_DEVICE:
-            ESP_LOGE(TAG, "Invalid I/O device for PPP");
+            ESP_LOGE(TAG, "%s: Invalid I/O device for PPP", name);
             break;
         case PPPERR_ALLOC:
-            ESP_LOGE(TAG, "Unable to allocate resources");
+            ESP_LOGE(TAG, "%s: Unable to allocate resources", name);
             break;
         case PPPERR_USER: /* User interrupt */
-            ESP_LOGI(TAG, "User interrupt");
+            ESP_LOGI(TAG, "%s: User interrupt", name);
             break;
         case PPPERR_CONNECT: /* Connection lost */
-            ESP_LOGI(TAG, "Connection lost");
+            ESP_LOGI(TAG, "%s: Connection lost", name);
             esp_netif_update_default_netif(netif, ESP_NETIF_LOST_IP);
             err = esp_event_post(IP_EVENT, netif->lost_ip_event, &evt, sizeof(evt), 0);
 
             if (ESP_OK != err) {
-                ESP_LOGE(TAG, "esp_event_post failed with code %d", err);
+                ESP_LOGE(TAG, "%s: esp_event_post failed with code %d", name, err);
             }
             return;
 
         case PPPERR_AUTHFAIL:
-            ESP_LOGE(TAG, "Failed authentication challenge");
+            ESP_LOGE(TAG, "%s: Failed authentication challenge", name);
             break;
         case PPPERR_PROTOCOL:
-            ESP_LOGE(TAG, "Failed to meet protocol");
+            ESP_LOGE(TAG, "%s: Failed to meet protocol", name);
             break;
         case PPPERR_PEERDEAD:
-            ESP_LOGE(TAG, "Connection timeout");
+            ESP_LOGE(TAG, "%s: Connection timeout", name);
             break;
         case PPPERR_IDLETIMEOUT:
-            ESP_LOGE(TAG, "Idle Timeout");
+            ESP_LOGE(TAG, "%s: Idle Timeout", name);
             break;
         case PPPERR_CONNECTTIME:
-            ESP_LOGE(TAG, "Max connect time reached");
+            ESP_LOGE(TAG, "%s: Max connect time reached", name);
             break;
         case PPPERR_LOOPBACK:
-            ESP_LOGE(TAG, "Loopback detected");
+            ESP_LOGE(TAG, "%s: Loopback detected", name);
             break;
         default:
-            ESP_LOGE(TAG, "Unknown error code %d", err_code);
+            ESP_LOGE(TAG, "%s: Unknown error code %d", name, err_code);
             break;
     }
     if (obj->ppp_error_event_enabled) {
         err = esp_event_post(NETIF_PPP_STATUS, err_code, &netif, sizeof(netif), 0);
         if (err != ESP_OK) {
-            ESP_LOGE(TAG, "esp_event_post failed with code %d", err);
+            ESP_LOGE(TAG, "%s: esp_event_post failed with code %d", name, err);
         }
 
     }
@@ -124,42 +128,44 @@ static void on_ppp_status_changed(ppp_pcb *pcb, int err_code, void *ctx)
  */
 static void on_ppp_notify_phase(ppp_pcb *pcb, u8_t phase, void *ctx)
 {
+    esp_netif_t *netif = ctx;
+    const char *name = netif->if_desc ? netif->if_desc : "";
+
     switch (phase) {
         case PPP_PHASE_DEAD:
-            ESP_LOGD(TAG, "Phase Dead");
+            ESP_LOGD(TAG, "%s: Phase Dead", name);
             break;
         case PPP_PHASE_INITIALIZE:
-            ESP_LOGD(TAG, "Phase Start");
+            ESP_LOGD(TAG, "%s: Phase Start", name);
             break;
         case PPP_PHASE_ESTABLISH:
-            ESP_LOGD(TAG, "Phase Establish");
+            ESP_LOGD(TAG, "%s: Phase Establish", name);
             break;
         case PPP_PHASE_AUTHENTICATE:
-            ESP_LOGD(TAG, "Phase Authenticate");
+            ESP_LOGD(TAG, "%s: Phase Authenticate", name);
             break;
         case PPP_PHASE_NETWORK:
-            ESP_LOGD(TAG, "Phase Network");
+            ESP_LOGD(TAG, "%s: Phase Network", name);
             break;
         case PPP_PHASE_RUNNING:
-            ESP_LOGD(TAG, "Phase Running");
+            ESP_LOGD(TAG, "%s: Phase Running", name);
             break;
         case PPP_PHASE_TERMINATE:
-            ESP_LOGD(TAG, "Phase Terminate");
+            ESP_LOGD(TAG, "%s: Phase Terminate", name);
             break;
         case PPP_PHASE_DISCONNECT:
-            ESP_LOGD(TAG, "Phase Disconnect");
+            ESP_LOGD(TAG, "%s: Phase Disconnect", name);
             break;
         default:
-            ESP_LOGW(TAG, "Phase Unknown: %d", phase);
+            ESP_LOGW(TAG, "%s: Phase Unknown: %d", name, phase);
             break;
     }
-    esp_netif_t *netif = ctx;
     lwip_peer2peer_ctx_t *obj = (lwip_peer2peer_ctx_t *)netif->related_data;
     assert(obj->base.netif_type == PPP_LWIP_NETIF);
     if (obj && obj->ppp_phase_event_enabled) {
         esp_err_t err = esp_event_post(NETIF_PPP_STATUS, NETIF_PP_PHASE_OFFSET + phase, &netif, sizeof(netif), 0);
         if (err != ESP_OK) {
-            ESP_LOGE(TAG, "esp_event_post failed with code %d", err);
+            ESP_LOGE(TAG, "%s: esp_event_post failed with code %d", name, err);
         }
     }
 }
@@ -268,6 +274,19 @@ esp_err_t esp_netif_start_ppp(esp_netif_t *esp_netif)
         ppp_ctx->ppp->ipcp_wantoptions.hisaddr = ppp_ctx->ppp_their_ip4_addr.addr;
         ppp_ctx->ppp->ipcp_wantoptions.accept_local = 1;
     }
+    if (ppp_ctx->ppp_dns1_addr.addr != IPADDR_ANY) {
+        ppp_set_ipcp_dnsaddr(ppp_ctx->ppp, 0, &ppp_ctx->ppp_dns1_addr);
+    }
+    if (ppp_ctx->ppp_dns2_addr.addr != IPADDR_ANY) {
+        ppp_set_ipcp_dnsaddr(ppp_ctx->ppp, 1, &ppp_ctx->ppp_dns2_addr);
+    }
+    if (ppp_ctx->ppp_dns1_addr.addr != IPADDR_ANY ||
+        ppp_ctx->ppp_dns2_addr.addr != IPADDR_ANY) {
+        // No need to request DNS servers from peer when providing DNS servers.
+        ppp_set_usepeerdns(ppp_ctx->ppp, 0);
+    }
+
+    ppp_set_passive(ppp_ctx->ppp, ppp_ctx->ppp_passive);
 #endif // CONFIG_LWIP_PPP_SERVER_SUPPORT
 
 #if ESP_IPV6_AUTOCONFIG
@@ -276,7 +295,12 @@ esp_err_t esp_netif_start_ppp(esp_netif_t *esp_netif)
 
     ESP_LOGD(TAG, "%s: Starting PPP connection: %p", __func__, ppp_ctx->ppp);
 #ifdef CONFIG_LWIP_PPP_SERVER_SUPPORT
-    esp_err_t err = ppp_listen(ppp_ctx->ppp);
+    esp_err_t err;
+    if (ppp_ctx->ppp_passive) {
+        err = ppp_listen(ppp_ctx->ppp);
+    } else {
+        err = ppp_connect(ppp_ctx->ppp, 0);
+    }
 #else
     err_t err = ppp_connect(ppp_ctx->ppp, 0);
 #endif
@@ -338,6 +362,9 @@ esp_err_t esp_netif_ppp_set_params(esp_netif_t *netif, const esp_netif_ppp_confi
 #ifdef CONFIG_LWIP_PPP_SERVER_SUPPORT
     obj->ppp_our_ip4_addr = config->ppp_our_ip4_addr;
     obj->ppp_their_ip4_addr = config->ppp_their_ip4_addr;
+    obj->ppp_dns1_addr = config->ppp_dns1_addr;
+    obj->ppp_dns2_addr = config->ppp_dns2_addr;
+    obj->ppp_passive = config->ppp_passive;
 #endif
     return ESP_OK;
 }
@@ -357,6 +384,9 @@ esp_err_t esp_netif_ppp_get_params(esp_netif_t *netif, esp_netif_ppp_config_t *c
 #ifdef CONFIG_LWIP_PPP_SERVER_SUPPORT
     config->ppp_our_ip4_addr = obj->ppp_our_ip4_addr;
     config->ppp_their_ip4_addr = obj->ppp_their_ip4_addr;
+    config->ppp_dns1_addr = obj->ppp_dns1_addr;
+    config->ppp_dns2_addr = obj->ppp_dns2_addr;
+    config->ppp_passive = obj->ppp_passive;
 #endif
 
     return ESP_OK;