On Thu, Jan 30, 2025 at 09:22:20AM +0100, Jerome Forissier wrote: > Move the initialization of the ethernet devices out of the new_netif() > function. Indeed, new_netif() accepts a struct device argument, which > is expected to be valid and active. The activation and selection of > this device are achieved by eth_init() (on first time the network > stack is used) and eth_set_current(). This is what takes care of the > ethrotate and ethact environment variables. Therefore, move these calls > to a new function: net_lwip_set_current(), and use it whenever a > net-lwip command is run. > > This patch hopefully fixes the incorrect net-lwip behavior observed on > boards with multiple ethernet interfaces [1]. > > Tested on an i.MX8MPlus EVK equipped wih two ethernet ports. The dhcp > command succeeds whether the cable is plugged into the first or second > port. > > [1] https://lists.denx.de/pipermail/u-boot/2025-January/576326.html > > Signed-off-by: Jerome Forissier <[email protected]> > CC: E Shattow <[email protected]>
Reported-by: E Shattow <[email protected]> > --- > include/net-lwip.h | 1 + > net/lwip/dhcp.c | 2 +- > net/lwip/dns.c | 2 +- > net/lwip/net-lwip.c | 23 ++++++++++++++--------- > net/lwip/ping.c | 2 +- > net/lwip/tftp.c | 2 +- > net/lwip/wget.c | 2 +- > 7 files changed, 20 insertions(+), 14 deletions(-) > > diff --git a/include/net-lwip.h b/include/net-lwip.h > index 4d7f9387d1d..64e5c720560 100644 > --- a/include/net-lwip.h > +++ b/include/net-lwip.h > @@ -10,6 +10,7 @@ enum proto_t { > TFTPGET > }; > > +void net_lwip_set_current(void); > struct netif *net_lwip_new_netif(struct udevice *udev); > struct netif *net_lwip_new_netif_noip(struct udevice *udev); > void net_lwip_remove_netif(struct netif *netif); > diff --git a/net/lwip/dhcp.c b/net/lwip/dhcp.c > index e7d9147455c..3b7e4700c6e 100644 > --- a/net/lwip/dhcp.c > +++ b/net/lwip/dhcp.c > @@ -115,7 +115,7 @@ int do_dhcp(struct cmd_tbl *cmdtp, int flag, int argc, > char *const argv[]) > int ret; > struct udevice *dev; > > - eth_set_current(); > + net_lwip_set_current(); > > dev = eth_get_dev(); > if (!dev) { > diff --git a/net/lwip/dns.c b/net/lwip/dns.c > index 1de63c9998b..149bdb784dc 100644 > --- a/net/lwip/dns.c > +++ b/net/lwip/dns.c > @@ -121,7 +121,7 @@ int do_dns(struct cmd_tbl *cmdtp, int flag, int argc, > char *const argv[]) > if (argc == 3) > var = argv[2]; > > - eth_set_current(); > + net_lwip_set_current(); > > return dns_loop(eth_get_dev(), name, var); > } > diff --git a/net/lwip/net-lwip.c b/net/lwip/net-lwip.c > index b863047f598..cab1dd7d483 100644 > --- a/net/lwip/net-lwip.c > +++ b/net/lwip/net-lwip.c > @@ -127,6 +127,20 @@ static int get_udev_ipv4_info(struct udevice *dev, > ip4_addr_t *ip, > return 0; > } > > +/* Initialize the lwIP stack and the ethernet devices and set current device > */ > +void net_lwip_set_current(void) > +{ > + static bool init_done; > + > + if (!init_done) { > + eth_init_rings(); > + eth_init(); > + lwip_init(); > + init_done = true; > + } > + eth_set_current(); > +} > + > static struct netif *new_netif(struct udevice *udev, bool with_ip) > { > unsigned char enetaddr[ARP_HLEN]; > @@ -134,19 +148,10 @@ static struct netif *new_netif(struct udevice *udev, > bool with_ip) > ip4_addr_t ip, mask, gw; > struct netif *netif; > int ret = 0; > - static bool first_call = true; > > if (!udev) > return NULL; > > - if (first_call) { > - eth_init_rings(); > - /* Pick a valid active device, if any */ > - eth_init(); > - lwip_init(); > - first_call = false; > - } > - > if (eth_start_udev(udev) < 0) { > log_err("Could not start %s\n", udev->name); > return NULL; > diff --git a/net/lwip/ping.c b/net/lwip/ping.c > index aa617530749..200a702bbb5 100644 > --- a/net/lwip/ping.c > +++ b/net/lwip/ping.c > @@ -168,7 +168,7 @@ int do_ping(struct cmd_tbl *cmdtp, int flag, int argc, > char *const argv[]) > if (!ipaddr_aton(argv[1], &addr)) > return CMD_RET_USAGE; > > - eth_set_current(); > + net_lwip_set_current(); > > if (ping_loop(eth_get_dev(), &addr) < 0) > return CMD_RET_FAILURE; > diff --git a/net/lwip/tftp.c b/net/lwip/tftp.c > index fc4aff5f2ba..123d66b5dba 100644 > --- a/net/lwip/tftp.c > +++ b/net/lwip/tftp.c > @@ -280,7 +280,7 @@ int do_tftpb(struct cmd_tbl *cmdtp, int flag, int argc, > char *const argv[]) > goto out; > } > > - eth_set_current(); > + net_lwip_set_current(); > > if (tftp_loop(eth_get_dev(), laddr, fname, srvip, port) < 0) > ret = CMD_RET_FAILURE; > diff --git a/net/lwip/wget.c b/net/lwip/wget.c > index b76f6c0f1d9..9aec75f9bed 100644 > --- a/net/lwip/wget.c > +++ b/net/lwip/wget.c > @@ -354,7 +354,7 @@ static int wget_loop(struct udevice *udev, ulong > dst_addr, char *uri) > > int wget_do_request(ulong dst_addr, char *uri) > { > - eth_set_current(); > + net_lwip_set_current(); > > if (!wget_info) > wget_info = &default_wget_info; > -- > 2.43.0 > -- Tom
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