Am Donnerstag, dem 09.09.2021 um 12:24 +0200 schrieb Oleksij Rempel: > Am 09.09.21 um 11:28 schrieb Lucas Stach: > > Am Donnerstag, dem 09.09.2021 um 11:13 +0200 schrieb Oleksij Rempel: > > > On some boards, forcing detection of all device will take noticeable more > > > time. To reduce this time, we need to scan only for USB devices. > > > > > > So, provide option do ifup by forcing only USB scan. > > > > Why is this force detection even necessary? Is there a reason you can't > > just put a eth-discover script in /env/network/ in the defaultenv of > > this board to do the right thing when Barebox tries to bring up the > > network interfaces? > > This is board specific decision. The flag which indicate if board should > do this is provided by the board code. So, if board code should set some > flags anyway, why not to interpret this flags by some common code aswell? > A force detect should never be necessary for any board to bring up the interfaces needed for a standard boot target. The force detection is something you would do manually when hacking on a board. You can still make the USB scan conditional on some board specifics, like the status of the eth0 interface, in the discover script. Regards, Lucas > > Regards, > > Lucas > > > > > > > > Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx> > > > --- > > > Documentation/user/networking.rst | 3 +++ > > > arch/arm/boards/skov-imx6/board.c | 2 +- > > > include/net.h | 1 + > > > net/ifup.c | 16 ++++++++++++++-- > > > 4 files changed, 19 insertions(+), 3 deletions(-) > > > > > > diff --git a/Documentation/user/networking.rst b/Documentation/user/networking.rst > > > index 9231ebde56..18936ff169 100644 > > > --- a/Documentation/user/networking.rst > > > +++ b/Documentation/user/networking.rst > > > @@ -55,6 +55,9 @@ device: > > > | | | detected automatically during start (i.e. for | > > > | | | USB network adapters) | > > > +------------------------------+--------------+------------------------------------------------+ > > > +| global.net.ifup_detect_usb | boolean | Set to true if you use USB network adapter | > > > +| | | and global.net.ifup_force_detect is too slow. | > > > ++------------------------------+--------------+------------------------------------------------+ > > > > > > The first step for networking is configuring the network device. The network > > > device is usually ``eth0``. The current configuration can be viewed with the > > > diff --git a/arch/arm/boards/skov-imx6/board.c b/arch/arm/boards/skov-imx6/board.c > > > index 9a32e68f21..bd00c16157 100644 > > > --- a/arch/arm/boards/skov-imx6/board.c > > > +++ b/arch/arm/boards/skov-imx6/board.c > > > @@ -626,7 +626,7 @@ no_switch: > > > pr_warn("Can't disable eth0\n"); > > > } > > > > > > - globalvar_set("net.ifup_force_detect", "true"); > > > + globalvar_set("net.ifup_detect_usb", "true"); > > > > > > return 0; > > > } > > > diff --git a/include/net.h b/include/net.h > > > index aad28e4f4c..15cd921f56 100644 > > > --- a/include/net.h > > > +++ b/include/net.h > > > @@ -488,6 +488,7 @@ int net_icmp_send(struct net_connection *con, int len); > > > void led_trigger_network(enum led_trigger trigger); > > > > > > #define IFUP_FLAG_FORCE (1 << 0) > > > +#define IFUP_FLAG_USB (1 << 1) > > > > > > int ifup_edev(struct eth_device *edev, unsigned flags); > > > int ifup(const char *name, unsigned flags); > > > diff --git a/net/ifup.c b/net/ifup.c > > > index 1870f74017..5cb2b52716 100644 > > > --- a/net/ifup.c > > > +++ b/net/ifup.c > > > @@ -20,6 +20,7 @@ > > > #include <globalvar.h> > > > #include <magicvar.h> > > > #include <linux/stat.h> > > > +#include <usb/usb.h> > > > > > > static int eth_discover(char *file) > > > { > > > @@ -260,6 +261,7 @@ int ifdown(const char *ethname) > > > } > > > > > > static int net_ifup_force_detect; > > > +static int net_ifup_detect_usb; > > > > > > int ifup_all(unsigned flags) > > > { > > > @@ -282,6 +284,9 @@ int ifup_all(unsigned flags) > > > > > > closedir(dir); > > > > > > + if ((flags & IFUP_FLAG_USB) || net_ifup_detect_usb) > > > + usb_rescan(); > > > + > > > if ((flags & IFUP_FLAG_FORCE) || net_ifup_force_detect || > > > list_empty(&netdev_list)) > > > device_detect_all(); > > > @@ -303,6 +308,7 @@ void ifdown_all(void) > > > static int ifup_all_init(void) > > > { > > > globalvar_add_simple_bool("net.ifup_force_detect", &net_ifup_force_detect); > > > + globalvar_add_simple_bool("net.ifup_detect_usb", &net_ifup_detect_usb); > > > > > > return 0; > > > } > > > @@ -310,6 +316,8 @@ late_initcall(ifup_all_init); > > > > > > BAREBOX_MAGICVAR(global.net.ifup_force_detect, > > > "net: force detection of devices on ifup -a"); > > > +BAREBOX_MAGICVAR(global.net.ifup_detect_usb, > > > + "net: scan usb without forcing detection of all devices on ifup -a"); > > > > > > #if IS_ENABLED(CONFIG_NET_CMD_IFUP) > > > > > > @@ -319,11 +327,14 @@ static int do_ifup(int argc, char *argv[]) > > > unsigned flags = 0; > > > int all = 0; > > > > > > - while ((opt = getopt(argc, argv, "af")) > 0) { > > > + while ((opt = getopt(argc, argv, "afu")) > 0) { > > > switch (opt) { > > > case 'f': > > > flags |= IFUP_FLAG_FORCE; > > > break; > > > + case 'u': > > > + flags |= IFUP_FLAG_USB; > > > + break; > > > case 'a': > > > all = 1; > > > break; > > > @@ -348,12 +359,13 @@ BAREBOX_CMD_HELP_TEXT("") > > > BAREBOX_CMD_HELP_TEXT("Options:") > > > BAREBOX_CMD_HELP_OPT ("-a", "bring up all interfaces") > > > BAREBOX_CMD_HELP_OPT ("-f", "Force. Configure even if ip already set") > > > +BAREBOX_CMD_HELP_OPT ("-u", "Probe USB ") > > > BAREBOX_CMD_HELP_END > > > > > > BAREBOX_CMD_START(ifup) > > > .cmd = do_ifup, > > > BAREBOX_CMD_DESC("bring a network interface up") > > > - BAREBOX_CMD_OPTS("[-af] [INTF]") > > > + BAREBOX_CMD_OPTS("[-afu] [INTF]") > > > BAREBOX_CMD_GROUP(CMD_GRP_NET) > > > BAREBOX_CMD_COMPLETE(eth_complete) > > > BAREBOX_CMD_HELP(cmd_ifup_help) > > > > > > > > _______________________________________________ > > barebox mailing list > > barebox@xxxxxxxxxxxxxxxxxxx > > http://lists.infradead.org/mailman/listinfo/barebox > > > > > -- > Regards, > Oleksij _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox