tree: https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git
topic/ravb-gigabit
head: 434fe0e99b1f7855e0b43ec7b90dd4566d9114c3
commit: 434fe0e99b1f7855e0b43ec7b90dd4566d9114c3 [45/45] Merge branches
'topic/ravb-gigabit-integration' and 'topic/ravb-gigabit-driver-v2' into
topic/ravb-gigabit
reproduce:
# apt-get install sparse
git checkout 434fe0e99b1f7855e0b43ec7b90dd4566d9114c3
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
include/linux/compiler.h:253:8: sparse: attribute 'no_sanitize_address':
unknown attribute
>> net/mpls/af_mpls.c:207:35: sparse: not enough arguments for function
>> mpls_multipath_hash
net/mpls/af_mpls.c: In function 'mpls_select_multipath':
net/mpls/af_mpls.c:207:9: error: too few arguments to function
'mpls_multipath_hash'
hash = mpls_multipath_hash(rt, skb);
^~~~~~~~~~~~~~~~~~~
net/mpls/af_mpls.c:122:12: note: declared here
static u32 mpls_multipath_hash(struct mpls_route *rt,
^~~~~~~~~~~~~~~~~~~
vim +207 net/mpls/af_mpls.c
9f427a0e David Ahern 2017-01-20 191
struct sk_buff *skb)
c89359a4 Roopa Prabhu 2015-12-01 192 {
c89359a4 Roopa Prabhu 2015-12-01 193 int alive =
ACCESS_ONCE(rt->rt_nhn_alive);
c89359a4 Roopa Prabhu 2015-12-01 194 u32 hash = 0;
c89359a4 Roopa Prabhu 2015-12-01 195 int nh_index = 0;
c89359a4 Roopa Prabhu 2015-12-01 196 int n = 0;
c89359a4 Roopa Prabhu 2015-12-01 197
c89359a4 Roopa Prabhu 2015-12-01 198 /* No need to look further into packet
if there's only
c89359a4 Roopa Prabhu 2015-12-01 199 * one path
c89359a4 Roopa Prabhu 2015-12-01 200 */
c89359a4 Roopa Prabhu 2015-12-01 201 if (rt->rt_nhn == 1)
c89359a4 Roopa Prabhu 2015-12-01 202 goto out;
c89359a4 Roopa Prabhu 2015-12-01 203
c89359a4 Roopa Prabhu 2015-12-01 204 if (alive <= 0)
c89359a4 Roopa Prabhu 2015-12-01 205 return NULL;
c89359a4 Roopa Prabhu 2015-12-01 206
9f427a0e David Ahern 2017-01-20 @207 hash = mpls_multipath_hash(rt, skb);
c89359a4 Roopa Prabhu 2015-12-01 208 nh_index = hash % alive;
c89359a4 Roopa Prabhu 2015-12-01 209 if (alive == rt->rt_nhn)
c89359a4 Roopa Prabhu 2015-12-01 210 goto out;
c89359a4 Roopa Prabhu 2015-12-01 211 for_nexthops(rt) {
c89359a4 Roopa Prabhu 2015-12-01 212 if (nh->nh_flags & (RTNH_F_DEAD
| RTNH_F_LINKDOWN))
c89359a4 Roopa Prabhu 2015-12-01 213 continue;
c89359a4 Roopa Prabhu 2015-12-01 214 if (n == nh_index)
c89359a4 Roopa Prabhu 2015-12-01 215 return nh;
:::::: The code at line 207 was first introduced by commit
:::::: 9f427a0e474a67b454420c131709600d44850486 net: mpls: Fix multipath
selection for LSR use case
:::::: TO: David Ahern <[email protected]>
:::::: CC: David S. Miller <[email protected]>
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