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arch/sim: fix MTU mismatch on TAP device in host route mode #7380

Merged
merged 1 commit into from Oct 21, 2022
Merged

arch/sim: fix MTU mismatch on TAP device in host route mode #7380

merged 1 commit into from Oct 21, 2022

Commits on Oct 21, 2022

  1. arch/sim: fix MTU mismatch on TAP device in host route mode 

    In host route mode (bridge mode disabled), the d_pktsize of TAP device is not initialized and will be set to CONFIG_NET_ETH_PKTSIZE in netdev_register, while the MTU on host side keeps at 1500. Input packets larger than CONFIG_NET_ETH_PKTSIZE will be dropped because 'IP packet shorter than length in IP header'.
This patch fix this issue by reading MTU from host side and set as d_pktsize, just the same as what is done in bridge mode.

Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
    @wengzhe
    wengzhe committed Oct 21, 2022
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