From 22f68524f84c3a0d620e787c51d5f244ef8e0aca Mon Sep 17 00:00:00 2001 From: Joe Hershberger Date: Sun, 22 Mar 2015 17:09:23 -0500 Subject: sandbox: eth: Add support for using the 'lo' interface The 'lo' interface on Linux doesn't support thinks like ARP or link-layer access like we use to talk to a normal network interface. A higher-level network API must be used to access localhost. As written, this interface is limited to not supporting ICMP since the API doesn't allow the socket to be opened for all IP traffic and be able to receive at the same time. UDP is far more useful to test with, so it was selected over ICMP. Ping won't work, but things like TFTP should work. Signed-off-by: Joe Hershberger Reviewed-by: Simon Glass --- arch/sandbox/include/asm/eth-raw-os.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'arch/sandbox/include') diff --git a/arch/sandbox/include/asm/eth-raw-os.h b/arch/sandbox/include/asm/eth-raw-os.h index df60c4f3b8..ed4b2e2649 100644 --- a/arch/sandbox/include/asm/eth-raw-os.h +++ b/arch/sandbox/include/asm/eth-raw-os.h @@ -15,16 +15,24 @@ * * sd: socket descriptor - the open socket during a session * device: struct sockaddr_ll - the host interface packets move to/from + * local: 1 or 0 to select the local interface ('lo') or not + * local_bindsd: socket descriptor to prevent the kernel from sending + * a message to the server claiming the port is + * unreachable + * local_bind_udp_port: The UDP port number that we bound to */ struct eth_sandbox_raw_priv { int sd; void *device; + int local; + int local_bind_sd; + unsigned short local_bind_udp_port; }; int sandbox_eth_raw_os_start(const char *ifname, unsigned char *ethmac, struct eth_sandbox_raw_priv *priv); int sandbox_eth_raw_os_send(void *packet, int length, - const struct eth_sandbox_raw_priv *priv); + struct eth_sandbox_raw_priv *priv); int sandbox_eth_raw_os_recv(void *packet, int *length, const struct eth_sandbox_raw_priv *priv); void sandbox_eth_raw_os_stop(struct eth_sandbox_raw_priv *priv); -- cgit v1.2.1