Dieter Graef / F7_Ethernet

Ethernet for Nucleo and Disco board STM32F746 works with gcc and arm. IAC is untested

Dependents:   STM32F746_iothub_client_sample_mqtt DISCO-F746NG_Ethernet Nucleo_F746ZG_Ethernet thethingsiO-DISCO_F746NG-mqtt ... more

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icmp.c File Reference
Functions

icmp.c File Reference

ICMP - Internet Control Message Protocol. More...

Go to the source code of this file.

Functions

static void icmp_send_response (struct pbuf *p, u8_t type, u8_t code)
 Send an icmp packet in response to an incoming packet.
void icmp_input (struct pbuf *p, struct netif *inp)
 Processes ICMP input packets, called from ip_input().
void icmp_dest_unreach (struct pbuf *p, enum icmp_dur_type t)
 Send an icmp 'destination unreachable' packet, called from ip_input() if the transport layer protocol is unknown and from udp_input() if the local port is not bound.
void icmp_time_exceeded (struct pbuf *p, enum icmp_te_type t)
 Send a 'time exceeded' packet, called from ip_forward() if TTL is 0.

Detailed Description

ICMP - Internet Control Message Protocol.

Definition in file icmp.c.

Function Documentation

void icmp_dest_unreach ( struct pbuf *  p,
enum icmp_dur_type  t 
)

Send an icmp 'destination unreachable' packet, called from ip_input() if the transport layer protocol is unknown and from udp_input() if the local port is not bound.

Parameters:
pthe input packet for which the 'unreachable' should be sent, p->payload pointing to the IP header
ttype of the 'unreachable' packet

Definition at line 261 of file icmp.c.

void icmp_input ( struct pbuf *  p,
struct netif *  inp 
)

Processes ICMP input packets, called from ip_input().

Currently only processes icmp echo requests and sends out the echo response.

Parameters:
pthe icmp echo request packet, p->payload pointing to the ip header
inpthe netif on which this packet was received

Definition at line 77 of file icmp.c.

static void icmp_send_response ( struct pbuf *  p,
u8_t  type,
u8_t  code 
) [static]

Send an icmp packet in response to an incoming packet.

Parameters:
pthe input packet for which the 'unreachable' should be sent, p->payload pointing to the IP header
typeType of the ICMP header
codeCode of the ICMP header

Definition at line 291 of file icmp.c.

void icmp_time_exceeded ( struct pbuf *  p,
enum icmp_te_type  t 
)

Send a 'time exceeded' packet, called from ip_forward() if TTL is 0.

Parameters:
pthe input packet for which the 'time exceeded' should be sent, p->payload pointing to the IP header
ttype of the 'time exceeded' packet

Definition at line 275 of file icmp.c.

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