> -----Original Message----- > From: Vitaly Kuznetsov [mailto:vkuznets@xxxxxxxxxx] > Sent: Tuesday, November 24, 2015 12:56 AM > To: KY Srinivasan <kys@xxxxxxxxxxxxx> > Cc: davem@xxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; linux- > kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx; olaf@xxxxxxxxx; > apw@xxxxxxxxxxxxx; jasowang@xxxxxxxxxx > Subject: Re: [PATCH net-next 08/10] hv_netvsc: Don't ask for additional head > room in the skb > > "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx> writes: > > > The rndis header is 116 bytes big and can be placed in the default > > head room that will be available in the skb. > > We have the following in include/linux/netdevice.h: > > #if defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) > # if defined(CONFIG_MAC80211_MESH) > # define LL_MAX_HEADER 128 > # else > # define LL_MAX_HEADER 96 > # endif > #else > # define LL_MAX_HEADER 32 > #endif > > In case someone disables MAC80211_MESH in his kernel config we're in > troubles again. I suggest we add additional patch here making sure it is > 128 bytes for Hyper-V: > > #if defined(CONFIG_HYPERV_NET) > # define LL_MAX_HEADER 128 > #elseif defined(CONFIG_WLAN) || IS_ENABLED(CONFIG_AX25) > ... Thanks Vitaly; will do. K. Y _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
