[U-Boot] [PATCH v2 07/11] net: sandbox-raw: Convert raw eth driver to livetree
Joe Hershberger
joe.hershberger at ni.com
Sat Jun 30 03:20:58 UTC 2018
Signed-off-by: Joe Hershberger <joe.hershberger at ni.com>
---
Changes in v2:
- move DT accesses to ofdata_to_platdata()
- store the host interface details in priv
- switch to dev_read_string()
arch/sandbox/cpu/eth-raw-os.c | 28 +++++++++++++++-------------
arch/sandbox/include/asm/eth-raw-os.h | 10 ++++++++--
drivers/net/sandbox-raw.c | 26 ++++++++++++++++----------
3 files changed, 39 insertions(+), 25 deletions(-)
diff --git a/arch/sandbox/cpu/eth-raw-os.c b/arch/sandbox/cpu/eth-raw-os.c
index 4263d8829a..82bf666886 100644
--- a/arch/sandbox/cpu/eth-raw-os.c
+++ b/arch/sandbox/cpu/eth-raw-os.c
@@ -25,8 +25,8 @@
#include <linux/if_ether.h>
#include <linux/if_packet.h>
-static int _raw_packet_start(const char *ifname, unsigned char *ethmac,
- struct eth_sandbox_raw_priv *priv)
+static int _raw_packet_start(struct eth_sandbox_raw_priv *priv,
+ unsigned char *ethmac)
{
struct sockaddr_ll *device;
struct packet_mreq mr;
@@ -40,7 +40,8 @@ static int _raw_packet_start(const char *ifname, unsigned char *ethmac,
return -ENOMEM;
device = priv->device;
memset(device, 0, sizeof(struct sockaddr_ll));
- device->sll_ifindex = if_nametoindex(ifname);
+ device->sll_ifindex = if_nametoindex(priv->host_ifname);
+ priv->host_ifindex = device->sll_ifindex;
device->sll_family = AF_PACKET;
memcpy(device->sll_addr, ethmac, 6);
device->sll_halen = htons(6);
@@ -53,11 +54,11 @@ static int _raw_packet_start(const char *ifname, unsigned char *ethmac,
return -errno;
}
/* Bind to the specified interface */
- ret = setsockopt(priv->sd, SOL_SOCKET, SO_BINDTODEVICE, ifname,
- strlen(ifname) + 1);
+ ret = setsockopt(priv->sd, SOL_SOCKET, SO_BINDTODEVICE,
+ priv->host_ifname, strlen(priv->host_ifname) + 1);
if (ret < 0) {
- printf("Failed to bind to '%s': %d %s\n", ifname, errno,
- strerror(errno));
+ printf("Failed to bind to '%s': %d %s\n", priv->host_ifname,
+ errno, strerror(errno));
return -errno;
}
@@ -76,11 +77,12 @@ static int _raw_packet_start(const char *ifname, unsigned char *ethmac,
printf("Failed to set promiscuous mode: %d %s\n"
"Falling back to the old \"flags\" way...\n",
errno, strerror(errno));
- if (strlen(ifname) >= IFNAMSIZ) {
- printf("Interface name %s is too long.\n", ifname);
+ if (strlen(priv->host_ifname) >= IFNAMSIZ) {
+ printf("Interface name %s is too long.\n",
+ priv->host_ifname);
return -EINVAL;
}
- strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
+ strncpy(ifr.ifr_name, priv->host_ifname, IFNAMSIZ);
if (ioctl(priv->sd, SIOCGIFFLAGS, &ifr) < 0) {
printf("Failed to read flags: %d %s\n", errno,
strerror(errno));
@@ -142,13 +144,13 @@ static int _local_inet_start(struct eth_sandbox_raw_priv *priv)
return 0;
}
-int sandbox_eth_raw_os_start(const char *ifname, unsigned char *ethmac,
- struct eth_sandbox_raw_priv *priv)
+int sandbox_eth_raw_os_start(struct eth_sandbox_raw_priv *priv,
+ unsigned char *ethmac)
{
if (priv->local)
return _local_inet_start(priv);
else
- return _raw_packet_start(ifname, ethmac, priv);
+ return _raw_packet_start(priv, ethmac);
}
int sandbox_eth_raw_os_send(void *packet, int length,
diff --git a/arch/sandbox/include/asm/eth-raw-os.h b/arch/sandbox/include/asm/eth-raw-os.h
index f986d3142d..760f5fbedd 100644
--- a/arch/sandbox/include/asm/eth-raw-os.h
+++ b/arch/sandbox/include/asm/eth-raw-os.h
@@ -9,10 +9,14 @@
#ifndef __ETH_RAW_OS_H
#define __ETH_RAW_OS_H
+#define IFNAMSIZ 16
+
/**
* struct eth_sandbox_raw_priv - raw socket session
*
* sd: socket descriptor - the open socket during a session
+ * host_ifname: interface name on the host to use for sending our packets
+ * host_ifindex: interface index number on the host
* 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
@@ -22,14 +26,16 @@
*/
struct eth_sandbox_raw_priv {
int sd;
+ char host_ifname[IFNAMSIZ];
+ unsigned int host_ifindex;
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_start(struct eth_sandbox_raw_priv *priv,
+ unsigned char *ethmac);
int sandbox_eth_raw_os_send(void *packet, int length,
struct eth_sandbox_raw_priv *priv);
int sandbox_eth_raw_os_recv(void *packet, int *length,
diff --git a/drivers/net/sandbox-raw.c b/drivers/net/sandbox-raw.c
index 3f8020f629..317e964019 100644
--- a/drivers/net/sandbox-raw.c
+++ b/drivers/net/sandbox-raw.c
@@ -21,21 +21,16 @@ static int sb_eth_raw_start(struct udevice *dev)
{
struct eth_sandbox_raw_priv *priv = dev_get_priv(dev);
struct eth_pdata *pdata = dev_get_platdata(dev);
- const char *interface;
+ int ret;
debug("eth_sandbox_raw: Start\n");
- interface = fdt_getprop(gd->fdt_blob, dev_of_offset(dev),
- "host-raw-interface", NULL);
- if (interface == NULL)
- return -EINVAL;
-
- if (strcmp(interface, "lo") == 0) {
- priv->local = 1;
+ ret = sandbox_eth_raw_os_start(priv, pdata->enetaddr);
+ if (priv->local) {
env_set("ipaddr", "127.0.0.1");
env_set("serverip", "127.0.0.1");
}
- return sandbox_eth_raw_os_start(interface, pdata->enetaddr, priv);
+ return ret;
}
static int sb_eth_raw_send(struct udevice *dev, void *packet, int length)
@@ -143,8 +138,19 @@ static const struct eth_ops sb_eth_raw_ops = {
static int sb_eth_raw_ofdata_to_platdata(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
+ struct eth_sandbox_raw_priv *priv = dev_get_priv(dev);
+ const char *ifname;
+
+ pdata->iobase = dev_read_addr(dev);
+
+ ifname = dev_read_string(dev, "host-raw-interface");
+ if (ifname) {
+ strncpy(priv->host_ifname, ifname, IFNAMSIZ);
+ printf(": Using %s from DT\n", priv->host_ifname);
+ if (strcmp(ifname, "lo") == 0)
+ priv->local = 1;
+ }
- pdata->iobase = devfdt_get_addr(dev);
return 0;
}
--
2.11.0
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