linux-next: build failure after merge of the final tree (net-nexttree related)

From: Stephen Rothwell
Date: Thu Mar 28 2013 - 01:04:37 EST


Hi all,

After merging the final tree, today's linux-next build (powerpc
ppc44x_defconfig) failed like this:

net/packet/af_packet.c: In function 'packet_sendmsg_spkt':
net/packet/af_packet.c:1515:2: error: implicit declaration of function 'skb_probe_transport_header' [-Werror=implicit-function-declaration]
drivers/net/tun.c: In function 'tun_get_user':
drivers/net/tun.c:1206:2: error: implicit declaration of function 'skb_probe_transport_header' [-Werror=implicit-function-declaration]

Caused by commit 40893fd0fd4e ("net: switch to use
skb_probe_transport_header()"). This is a 32 bit build, so that
"BITS_PER_LONG > 32" is false and so NET_SKBUFF_DATA_USES_OFFSET is not
defined ... and skb_probe_transport_header() is only defined in an area of
skbuff.h protected by "#ifdef NET_SKBUFF_DATA_USES_OFFSET" :-(

I have reverted that commit for today.
--
Cheers,
Stephen Rothwell sfr@xxxxxxxxxxxxxxxx

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