On Fri, 2015-10-30 at 13:02 -0700, Eric Dumazet wrote: > So it looks like you have a device with a very big hh_len > > MAX_TCP_HEADER is not enough space to hold all headers, and this is the > bug that needs to be fixed. This is scary to realloc all tcp packets ! >
drivers/net/hyperv/netvsc_drv.c sets a needed_headroom of 220 bytes :( Could you try : diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 4ac653b7b8ac..7dbdd29076be 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -132,8 +132,10 @@ static inline bool dev_xmit_complete(int rc) * used. */ -#if defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) -# if defined(CONFIG_MAC80211_MESH) +#if defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) || IS_ENABLED(CONFIG_HYPERV_NET) +# if IS_ENABLED(CONFIG_HYPERV_NET) +# define LL_MAX_HEADER 384 +# elif defined(CONFIG_MAC80211_MESH) # define LL_MAX_HEADER 128 # else # define LL_MAX_HEADER 96 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
