tree: https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git for-net-next2 head: 7c3f8641178fb63c1e970a23e3743e89fc92be81 commit: d0cdeba2fc5ef7f97bdcf5d31266a25802372009 [35/40] netfilter: remove checksum_partial indirection in struct nf_afinfo config: xtensa-allmodconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout d0cdeba2fc5ef7f97bdcf5d31266a25802372009 # save the attached .config to linux build tree make.cross ARCH=xtensa
All errors (new ones prefixed by >>):
net/ipv6/netfilter.c:133:9: error: redefinition of 'nf_ip6_checksum'
__sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
^~~~~~~~~~~~~~~
In file included from net/ipv6/netfilter.c:11:0:
include/linux/netfilter_ipv6.h:31:23: note: previous definition of
'nf_ip6_checksum' was here
static inline __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int
hook,
^~~~~~~~~~~~~~~
>> net/ipv6/netfilter.c:166:9: error: redefinition of 'nf_ip6_checksum_partial'
__sum16 nf_ip6_checksum_partial(struct sk_buff *skb, unsigned int hook,
^~~~~~~~~~~~~~~~~~~~~~~
In file included from net/ipv6/netfilter.c:11:0:
include/linux/netfilter_ipv6.h:36:23: note: previous definition of
'nf_ip6_checksum_partial' was here
static inline __sum16 nf_ip6_checksum_partial(struct sk_buff *skb,
^~~~~~~~~~~~~~~~~~~~~~~
vim +/nf_ip6_checksum_partial +166 net/ipv6/netfilter.c
132
> 133 __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
134 unsigned int dataoff, u_int8_t protocol)
135 {
136 const struct ipv6hdr *ip6h = ipv6_hdr(skb);
137 __sum16 csum = 0;
138
139 switch (skb->ip_summed) {
140 case CHECKSUM_COMPLETE:
141 if (hook != NF_INET_PRE_ROUTING && hook !=
NF_INET_LOCAL_IN)
142 break;
143 if (!csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
144 skb->len - dataoff, protocol,
145 csum_sub(skb->csum,
146 skb_checksum(skb, 0,
147 dataoff,
0)))) {
148 skb->ip_summed = CHECKSUM_UNNECESSARY;
149 break;
150 }
151 /* fall through */
152 case CHECKSUM_NONE:
153 skb->csum = ~csum_unfold(
154 csum_ipv6_magic(&ip6h->saddr,
&ip6h->daddr,
155 skb->len - dataoff,
156 protocol,
157 csum_sub(0,
158 skb_checksum(skb,
0,
159
dataoff, 0))));
160 csum = __skb_checksum_complete(skb);
161 }
162 return csum;
163 }
164 EXPORT_SYMBOL(nf_ip6_checksum);
165
> 166 __sum16 nf_ip6_checksum_partial(struct sk_buff *skb, unsigned int hook,
167 unsigned int dataoff, unsigned int len,
168 u_int8_t protocol)
169 {
170 const struct ipv6hdr *ip6h = ipv6_hdr(skb);
171 __wsum hsum;
172 __sum16 csum = 0;
173
174 switch (skb->ip_summed) {
175 case CHECKSUM_COMPLETE:
176 if (len == skb->len - dataoff)
177 return nf_ip6_checksum(skb, hook, dataoff,
protocol);
178 /* fall through */
179 case CHECKSUM_NONE:
180 hsum = skb_checksum(skb, 0, dataoff, 0);
181 skb->csum = ~csum_unfold(csum_ipv6_magic(&ip6h->saddr,
182 &ip6h->daddr,
183 skb->len -
dataoff,
184 protocol,
185 csum_sub(0,
hsum)));
186 skb->ip_summed = CHECKSUM_NONE;
187 return __skb_checksum_complete_head(skb, dataoff + len);
188 }
189 return csum;
190 };
191
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.config.gz
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