net: core: Verify interface state in net_try_send_data() #100297
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Verify that the interface is in operational UP state before attempting to send the packet with net_send_data() / net_try_send_data(). So far there's only been an NET_IF_LOWER_UP check in a lower level function, net_if_try_send_data(), however that didn't work well with interface like Wi-Fi, whouch could have carrier state set to ON, but was still not associated with the network (so the interface was no operational UP). Protocols like ICMP or DHCP, which use net_send_data() directly, should not be able to send packets in such case. Signed-off-by: Robert Lubos <[email protected]>
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jukkar
approved these changes
Dec 1, 2025
pdgendt
approved these changes
Dec 1, 2025
krish2718
approved these changes
Dec 1, 2025
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Verify that the interface is in operational UP state before attempting to send the packet with
net_send_data()/net_try_send_data().So far there's only been an NET_IF_LOWER_UP check in a lower level function,
net_if_try_send_data(), however that didn't work well with interface like Wi-Fi, which could have carrier state set to ON, but was still not associated with the network (so the interface was not operational UP). Protocols like ICMP or DHCP, which usenet_send_data()directly, should not be able to send packets in such case.