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Minor cleanup and documentation updates

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This commit is contained in:
Dirk Ziegelmeier 2017-05-03 08:51:00 +02:00
parent e835707814
commit 676dd74140
3 changed files with 13 additions and 7 deletions
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5
src/core/raw.c
View File

@ -235,7 +235,10 @@ raw_bind(struct raw_pcb *pcb, const ip_addr_t *ipaddr)
/** /**
* @ingroup raw_raw * @ingroup raw_raw
* Bind a RAW PCB. * Bind an RAW PCB to a specific netif.
* After calling this function, all packets received via this PCB
* are guaranteed to have come in via the specified netif, and all
* outgoing packets will go out via the specified netif.
* *
* @param pcb RAW PCB to be bound with netif. * @param pcb RAW PCB to be bound with netif.
* @param netif netif to bind to. Can be NULL. * @param netif netif to bind to. Can be NULL.

12
src/core/tcp.c
View File

@ -643,6 +643,9 @@ tcp_bind(struct tcp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port)
/** /**
* @ingroup tcp_raw * @ingroup tcp_raw
* Binds the connection to a netif and IP address. * Binds the connection to a netif and IP address.
* After calling this function, all packets received via this PCB
* are guaranteed to have come in via the specified netif, and all
* outgoing packets will go out via the specified netif.
* *
* @param pcb the tcp_pcb to bind. * @param pcb the tcp_pcb to bind.
* @param netif the netif to bind to. Can be NULL. * @param netif the netif to bind to. Can be NULL.
@ -926,21 +929,18 @@ tcp_connect(struct tcp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port,
/* check if we have a route to the remote host */ /* check if we have a route to the remote host */
netif = ip_route(&pcb->local_ip, &pcb->remote_ip); netif = ip_route(&pcb->local_ip, &pcb->remote_ip);
} }
if (netif == NULL) { if (netif == NULL) {
/* Don't even try to send a SYN packet if we have no route since that will fail. */ /* Don't even try to send a SYN packet if we have no route since that will fail. */
return ERR_RTE; return ERR_RTE;
} }
/* check if local IP has been assigned to pcb, if not, get one */
if (ip_addr_isany(&pcb->local_ip)) { if (ip_addr_isany(&pcb->local_ip)) {
/* no local IP address set, yet. */
const ip_addr_t *local_ip = ip_netif_get_local_ip(netif, ipaddr); const ip_addr_t *local_ip = ip_netif_get_local_ip(netif, ipaddr);
if (local_ip != NULL) { if (local_ip == NULL) {
/* Use the address as local address of the pcb. */
ip_addr_copy(pcb->local_ip, *local_ip);
} else {
return ERR_RTE; return ERR_RTE;
} }
ip_addr_copy(pcb->local_ip, *local_ip);
} }
#if LWIP_IPV6 && LWIP_IPV6_SCOPES #if LWIP_IPV6 && LWIP_IPV6_SCOPES

3
src/core/udp.c
View File

@ -1007,6 +1007,9 @@ udp_bind(struct udp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port)
/** /**
* @ingroup udp_raw * @ingroup udp_raw
* Bind an UDP PCB to a specific netif. * Bind an UDP PCB to a specific netif.
* After calling this function, all packets received via this PCB
* are guaranteed to have come in via the specified netif, and all
* outgoing packets will go out via the specified netif.
* *
* @param pcb UDP PCB to be bound. * @param pcb UDP PCB to be bound.
* @param netif netif to bind udp pcb to. Can be NULL. * @param netif netif to bind udp pcb to. Can be NULL.