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Further improvement to netif input function autoselection: Select between netif_input() and tcpip_input() depending on NO_SYS setting

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This commit is contained in:
Dirk Ziegelmeier 2016-07-30 10:29:14 +02:00
parent 4b67c582f6
commit 0c7d015ec4
2 changed files with 16 additions and 7 deletions
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21
src/core/netif.c
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@ -176,7 +176,7 @@ netif_init(void)
* Pass a received packet for input processing with
* ethernet_input or ip_input depending on netif flags.
*/
static err_t
err_t
netif_input(struct pbuf *p, struct netif *inp)
{
#if LWIP_ETHERNET
@ -198,14 +198,17 @@ netif_input(struct pbuf *p, struct netif *inp)
* @param state opaque data passed to the new netif
* @param init callback function that initializes the interface
* @param input callback function that is called to pass
* ingress packets up in the protocol layer stack. If a NULL
* pointer is supplied, a default input function is used
* ingress packets up in the protocol layer stack.\n
* If a NULL pointer is supplied, a default input function is used
* that uses netif flags NETIF_FLAG_ETHARP and NETIF_FLAG_ETHERNET
* to decide whether to pass to ethernet_input() or ip_input(). Since
* the flags are usually managed by the one implementing the ethernet
* to decide whether to forward to ethernet_input() or ip_input().\n
* Depending on NO_SYS, a function that passes the input directly to the stack
* (netif_input()) or via sending a message to TCPIP thread (tcpip_input())
* is used.\n
* Since the flags are usually managed by the one implementing the ethernet
* driver, the end user does not have to worry about choosing the correct
* one here. In other words, this only works when the netif driver is
* implemented correctly!
* input function here. In other words, this only works when the netif
* driver is implemented correctly!
*
* @return netif, or NULL if failed.
*/
@ -279,7 +282,11 @@ netif_add(struct netif *netif,
if(input != NULL) {
netif->input = input;
} else {
#if NO_SYS
netif->input = netif_input;
#else
netif->input = tcpip_input;
#endif
}
NETIF_SET_HWADDRHINT(netif, NULL);
#if ENABLE_LOOPBACK && LWIP_LOOPBACK_MAX_PBUFS

2
src/include/lwip/netif.h
View File

@ -413,6 +413,8 @@ void netif_poll_all(void);
#endif /* !LWIP_NETIF_LOOPBACK_MULTITHREADING */
#endif /* ENABLE_LOOPBACK */
err_t netif_input(struct pbuf *p, struct netif *inp);
#if LWIP_IPV6
/** @ingroup netif */
#define netif_ip_addr6(netif, i) ((const ip_addr_t*)(&((netif)->ip6_addr[i])))