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https://github.com/openvswitch/ovs
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6ccf21ca77
RHEL 7.3 provides upstream tunnel but it does not support name_assign_type attribute in net-device. This patch fixes the build problem by backporting functions with name_assign_type, and using proper flags in acinclude.m4 to invoke backport functions. Tested on RHEL 7.3 with kernel 3.10.0-514.el7.x86_64 Signed-off-by: Yi-Hung Wei <yihung.wei@gmail.com> Signed-off-by: Joe Stringer <joe@ovn.org>
74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
#ifndef __NET_INET_FRAG_WRAPPER_H
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#define __NET_INET_FRAG_WRAPPER_H 1
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#include <linux/version.h>
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#include_next <net/inet_frag.h>
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#ifdef HAVE_INET_FRAGS_LAST_IN
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#define q_flags(q) (q->last_in)
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#define qp_flags(qp) (qp->q.last_in)
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#else
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#define q_flags(q) (q->flags)
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#define qp_flags(qp) (qp->q.flags)
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#endif
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#ifndef HAVE_INET_FRAG_EVICTING
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static inline bool inet_frag_evicting(struct inet_frag_queue *q)
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{
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#ifdef HAVE_INET_FRAG_QUEUE_WITH_LIST_EVICTOR
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return !hlist_unhashed(&q->list_evictor);
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#else
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return (q_flags(q) & INET_FRAG_FIRST_IN) && q->fragments != NULL;
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#endif /* HAVE_INET_FRAG_QUEUE_WITH_LIST_EVICTOR */
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}
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#endif /* HAVE_INET_FRAG_EVICTING */
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/* Upstream commit 3fd588eb90bf ("inet: frag: remove lru list") dropped this
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* function, but we call it from our compat code. Provide a noop version. */
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#ifndef HAVE_INET_FRAG_LRU_MOVE
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#define inet_frag_lru_move(q)
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#endif
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#ifndef HAVE_SUB_FRAG_MEM_LIMIT_ARG_STRUCT_NETNS_FRAGS
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static inline void rpl_sub_frag_mem_limit(struct netns_frags *nf, int i)
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{
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__percpu_counter_add(&nf->mem, -i, frag_percpu_counter_batch);
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}
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#define sub_frag_mem_limit rpl_sub_frag_mem_limit
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static inline void rpl_add_frag_mem_limit(struct netns_frags *nf, int i)
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{
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__percpu_counter_add(&nf->mem, i, frag_percpu_counter_batch);
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}
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#define add_frag_mem_limit rpl_add_frag_mem_limit
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#endif
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#ifdef HAVE_VOID_INET_FRAGS_INIT
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static inline int rpl_inet_frags_init(struct inet_frags *frags)
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{
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inet_frags_init(frags);
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return 0;
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}
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#define inet_frags_init rpl_inet_frags_init
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#endif
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#ifndef HAVE_CORRECT_MRU_HANDLING
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/* We reuse the upstream inet_fragment.c common code for managing fragment
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* stores, However we actually store the fragments within our own 'inet_frags'
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* structures (in {ip_fragment,nf_conntrack_reasm}.c). When unloading the OVS
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* kernel module, we need to flush all of the remaining fragments from these
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* caches, or else we will panic with the following sequence of events:
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*
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* 1) A fragment for a packet arrives and is cached in inet_frags. This
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* starts a timer to ensure the fragment does not hang around forever.
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* 2) openvswitch module is unloaded.
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* 3) The timer for the fragment fires, calling into backported OVS code
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* to free the fragment.
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* 4) BUG: unable to handle kernel paging request at ffffffffc03c01e0
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*/
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void rpl_inet_frags_exit_net(struct netns_frags *nf, struct inet_frags *f);
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#define inet_frags_exit_net rpl_inet_frags_exit_net
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#endif
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#endif /* inet_frag.h */
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