@@ -1067,6 +1067,8 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
[OVS_DEFINE([HAVE_RBTREE_RB_LINK_NODE_RCU])])
OVS_GREP_IFELSE([$KSRC/include/net/dst_ops.h], [bool confirm_neigh],
[OVS_DEFINE([HAVE_DST_OPS_CONFIRM_NEIGH])])
+ OVS_GREP_IFELSE([$KSRC/include/net/inet_frag.h], [fqdir],
+ [OVS_DEFINE([HAVE_INET_FRAG_FQDIR])])
if cmp -s datapath/linux/kcompat.h.new \
datapath/linux/kcompat.h >/dev/null 2>&1; then
@@ -18,7 +18,16 @@ static inline bool inet_frag_evicting(struct inet_frag_queue *q)
#ifdef HAVE_INET_FRAG_QUEUE_WITH_LIST_EVICTOR
return !hlist_unhashed(&q->list_evictor);
#else
+/*
+ * We can't use acinclude.m4 to check this as the field 'fragments'
+ * also matches 'rb_fragments'.
+ */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,1,0)
return (q_flags(q) & INET_FRAG_FIRST_IN) && q->fragments != NULL;
+#else
+ return (q_flags(q) & INET_FRAG_FIRST_IN) &&
+ q->rb_fragments.rb_node != NULL;
+#endif
#endif /* HAVE_INET_FRAG_QUEUE_WITH_LIST_EVICTOR */
}
#endif /* HAVE_INET_FRAG_EVICTING */
@@ -29,6 +38,10 @@ static inline bool inet_frag_evicting(struct inet_frag_queue *q)
#define inet_frag_lru_move(q)
#endif
+#ifdef HAVE_INET_FRAG_FQDIR
+#define netns_frags fqdir
+#endif
+
#ifndef HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS
#ifdef HAVE_FRAG_PERCPU_COUNTER_BATCH
static inline void rpl_sub_frag_mem_limit(struct netns_frags *nf, int i)
@@ -45,13 +58,21 @@ static inline void rpl_add_frag_mem_limit(struct netns_frags *nf, int i)
#else /* !frag_percpu_counter_batch */
static inline void rpl_sub_frag_mem_limit(struct netns_frags *nf, int i)
{
+#ifdef HAVE_INET_FRAG_FQDIR
+ atomic_long_sub(i, &nf->mem);
+#else
atomic_sub(i, &nf->mem);
+#endif
}
#define sub_frag_mem_limit rpl_sub_frag_mem_limit
static inline void rpl_add_frag_mem_limit(struct netns_frags *nf, int i)
{
+#ifdef HAVE_INET_FRAG_FQDIR
+ atomic_long_add(i, &nf->mem);
+#else
atomic_add(i, &nf->mem);
+#endif
}
#define add_frag_mem_limit rpl_add_frag_mem_limit
#endif /* frag_percpu_counter_batch */
Since Linux kernel release 5.1 the fragments field of the inet_frag_queue structure is removed and now only the rb_fragments structure with an rb_node pointer is used for both ipv4 and ipv6. In addition, the atomic_sub and atomic_add functions are replaced with their equivalent long counterparts. Signed-off-by: Greg Rose <gvrose8192@gmail.com> --- acinclude.m4 | 2 ++ datapath/linux/compat/include/net/inet_frag.h | 21 +++++++++++++++++++++ 2 files changed, 23 insertions(+)