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net/net_if: Do not start TX thread if there is no network interface

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And print a warning if that happens.

This will also avoid to raise an ASSERT on net_if_tx_thread()'s k_poll
as this one will be called with no events to work with.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This commit is contained in:
Tomasz Bursztyka 2017-05-03 10:14:42 +02:00 • committed by Anas Nashif
commit e0a643591d
1 changed files with 5 additions and 0 deletions
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5
subsys/net/ip/net_if.c
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@ -1673,6 +1673,11 @@ void net_if_init(struct k_sem *startup_sync)
#endif
}
if (iface == __net_if_start) {
NET_WARN("There is no network interface to work with!");
return;
}
k_thread_spawn(tx_stack, sizeof(tx_stack),
(k_thread_entry_t)net_if_tx_thread,
startup_sync, NULL, NULL, K_PRIO_COOP(7),