From 494fff56379c4ad5b8fe36a5b7ffede4044ca7bb Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Wed, 28 Feb 2018 23:29:34 +0200 Subject: ipmr, ip6mr: Make mfc_cache a common structure mfc_cache and mfc6_cache are almost identical - the main difference is in the origin/group addresses and comparison-key. Make a common structure encapsulating most of the multicast routing logic - mr_mfc and convert both ipmr and ip6mr into using it. For easy conversion [casting, in this case] mr_mfc has to be the first field inside every multicast routing abstraction utilizing it. Signed-off-by: Yuval Mintz Acked-by: Nikolay Aleksandrov Signed-off-by: David S. Miller --- net/ipv6/ip6mr.c | 248 ++++++++++++++++++++++++++++--------------------------- 1 file changed, 126 insertions(+), 122 deletions(-) (limited to 'net/ipv6/ip6mr.c') diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index d50852882966..3fe254f9f9b7 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -285,7 +285,7 @@ static int ip6mr_hash_cmp(struct rhashtable_compare_arg *arg, } static const struct rhashtable_params ip6mr_rht_params = { - .head_offset = offsetof(struct mfc6_cache, mnode), + .head_offset = offsetof(struct mr_mfc, mnode), .key_offset = offsetof(struct mfc6_cache, cmparg), .key_len = sizeof(struct mfc6_cache_cmp_arg), .nelem_hint = 3, @@ -335,20 +335,20 @@ static struct mfc6_cache *ipmr_mfc_seq_idx(struct net *net, struct ipmr_mfc_iter *it, loff_t pos) { struct mr_table *mrt = it->mrt; - struct mfc6_cache *mfc; + struct mr_mfc *mfc; rcu_read_lock(); it->cache = &mrt->mfc_cache_list; list_for_each_entry_rcu(mfc, &mrt->mfc_cache_list, list) if (pos-- == 0) - return mfc; + return (struct mfc6_cache *)mfc; rcu_read_unlock(); spin_lock_bh(&mfc_unres_lock); it->cache = &mrt->mfc_unres_queue; list_for_each_entry(mfc, it->cache, list) if (pos-- == 0) - return mfc; + return (struct mfc6_cache *)mfc; spin_unlock_bh(&mfc_unres_lock); it->cache = NULL; @@ -492,8 +492,9 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos) if (v == SEQ_START_TOKEN) return ipmr_mfc_seq_idx(net, seq->private, 0); - if (mfc->list.next != it->cache) - return list_entry(mfc->list.next, struct mfc6_cache, list); + if (mfc->_c.list.next != it->cache) + return (struct mfc6_cache *)(list_entry(mfc->_c.list.next, + struct mr_mfc, list)); if (it->cache == &mrt->mfc_unres_queue) goto end_of_list; @@ -504,7 +505,9 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos) spin_lock_bh(&mfc_unres_lock); if (!list_empty(it->cache)) - return list_first_entry(it->cache, struct mfc6_cache, list); + return (struct mfc6_cache *)(list_first_entry(it->cache, + struct mr_mfc, + list)); end_of_list: spin_unlock_bh(&mfc_unres_lock); @@ -540,20 +543,20 @@ static int ipmr_mfc_seq_show(struct seq_file *seq, void *v) seq_printf(seq, "%pI6 %pI6 %-3hd", &mfc->mf6c_mcastgrp, &mfc->mf6c_origin, - mfc->mf6c_parent); + mfc->_c.mfc_parent); if (it->cache != &mrt->mfc_unres_queue) { seq_printf(seq, " %8lu %8lu %8lu", - mfc->mfc_un.res.pkt, - mfc->mfc_un.res.bytes, - mfc->mfc_un.res.wrong_if); - for (n = mfc->mfc_un.res.minvif; - n < mfc->mfc_un.res.maxvif; n++) { + mfc->_c.mfc_un.res.pkt, + mfc->_c.mfc_un.res.bytes, + mfc->_c.mfc_un.res.wrong_if); + for (n = mfc->_c.mfc_un.res.minvif; + n < mfc->_c.mfc_un.res.maxvif; n++) { if (VIF_EXISTS(mrt, n) && - mfc->mfc_un.res.ttls[n] < 255) + mfc->_c.mfc_un.res.ttls[n] < 255) seq_printf(seq, - " %2d:%-3d", - n, mfc->mfc_un.res.ttls[n]); + " %2d:%-3d", n, + mfc->_c.mfc_un.res.ttls[n]); } } else { /* unresolved mfc_caches don't contain @@ -800,14 +803,14 @@ static int mif6_delete(struct mr_table *mrt, int vifi, int notify, static inline void ip6mr_cache_free_rcu(struct rcu_head *head) { - struct mfc6_cache *c = container_of(head, struct mfc6_cache, rcu); + struct mr_mfc *c = container_of(head, struct mr_mfc, rcu); - kmem_cache_free(mrt_cachep, c); + kmem_cache_free(mrt_cachep, (struct mfc6_cache *)c); } static inline void ip6mr_cache_free(struct mfc6_cache *c) { - call_rcu(&c->rcu, ip6mr_cache_free_rcu); + call_rcu(&c->_c.rcu, ip6mr_cache_free_rcu); } /* Destroy an unresolved cache entry, killing queued skbs @@ -821,7 +824,7 @@ static void ip6mr_destroy_unres(struct mr_table *mrt, struct mfc6_cache *c) atomic_dec(&mrt->cache_resolve_queue_len); - while ((skb = skb_dequeue(&c->mfc_un.unres.unresolved)) != NULL) { + while ((skb = skb_dequeue(&c->_c.mfc_un.unres.unresolved)) != NULL) { if (ipv6_hdr(skb)->version == 0) { struct nlmsghdr *nlh = skb_pull(skb, sizeof(struct ipv6hdr)); @@ -844,7 +847,7 @@ static void ipmr_do_expire_process(struct mr_table *mrt) { unsigned long now = jiffies; unsigned long expires = 10 * HZ; - struct mfc6_cache *c, *next; + struct mr_mfc *c, *next; list_for_each_entry_safe(c, next, &mrt->mfc_unres_queue, list) { if (time_after(c->mfc_un.unres.expires, now)) { @@ -856,8 +859,8 @@ static void ipmr_do_expire_process(struct mr_table *mrt) } list_del(&c->list); - mr6_netlink_event(mrt, c, RTM_DELROUTE); - ip6mr_destroy_unres(mrt, c); + mr6_netlink_event(mrt, (struct mfc6_cache *)c, RTM_DELROUTE); + ip6mr_destroy_unres(mrt, (struct mfc6_cache *)c); } if (!list_empty(&mrt->mfc_unres_queue)) @@ -882,7 +885,7 @@ static void ipmr_expire_process(struct timer_list *t) /* Fill oifs list. It is called under write locked mrt_lock. */ static void ip6mr_update_thresholds(struct mr_table *mrt, - struct mfc6_cache *cache, + struct mr_mfc *cache, unsigned char *ttls) { int vifi; @@ -986,11 +989,11 @@ static struct mfc6_cache *ip6mr_cache_find(struct mr_table *mrt, .mf6c_mcastgrp = *mcastgrp, }; struct rhlist_head *tmp, *list; - struct mfc6_cache *c; + struct mr_mfc *c; list = rhltable_lookup(&mrt->mfc_hash, &arg, ip6mr_rht_params); rhl_for_each_entry_rcu(c, tmp, list, mnode) - return c; + return (struct mfc6_cache *)c; return NULL; } @@ -1004,12 +1007,12 @@ static struct mfc6_cache *ip6mr_cache_find_any_parent(struct mr_table *mrt, .mf6c_mcastgrp = in6addr_any, }; struct rhlist_head *tmp, *list; - struct mfc6_cache *c; + struct mr_mfc *c; list = rhltable_lookup(&mrt->mfc_hash, &arg, ip6mr_rht_params); rhl_for_each_entry_rcu(c, tmp, list, mnode) if (c->mfc_un.res.ttls[mifi] < 255) - return c; + return (struct mfc6_cache *)c; return NULL; } @@ -1024,7 +1027,8 @@ static struct mfc6_cache *ip6mr_cache_find_any(struct mr_table *mrt, .mf6c_mcastgrp = *mcastgrp, }; struct rhlist_head *tmp, *list; - struct mfc6_cache *c, *proxy; + struct mr_mfc *c; + struct mfc6_cache *proxy; if (ipv6_addr_any(mcastgrp)) goto skip; @@ -1032,12 +1036,12 @@ static struct mfc6_cache *ip6mr_cache_find_any(struct mr_table *mrt, list = rhltable_lookup(&mrt->mfc_hash, &arg, ip6mr_rht_params); rhl_for_each_entry_rcu(c, tmp, list, mnode) { if (c->mfc_un.res.ttls[mifi] < 255) - return c; + return (struct mfc6_cache *)c; /* It's ok if the mifi is part of the static tree */ - proxy = ip6mr_cache_find_any_parent(mrt, c->mf6c_parent); - if (proxy && proxy->mfc_un.res.ttls[mifi] < 255) - return c; + proxy = ip6mr_cache_find_any_parent(mrt, c->mfc_parent); + if (proxy && proxy->_c.mfc_un.res.ttls[mifi] < 255) + return (struct mfc6_cache *)c; } skip: @@ -1056,12 +1060,12 @@ ip6mr_cache_find_parent(struct mr_table *mrt, .mf6c_mcastgrp = *mcastgrp, }; struct rhlist_head *tmp, *list; - struct mfc6_cache *c; + struct mr_mfc *c; list = rhltable_lookup(&mrt->mfc_hash, &arg, ip6mr_rht_params); rhl_for_each_entry_rcu(c, tmp, list, mnode) - if (parent == -1 || parent == c->mf6c_parent) - return c; + if (parent == -1 || parent == c->mfc_parent) + return (struct mfc6_cache *)c; return NULL; } @@ -1074,8 +1078,8 @@ static struct mfc6_cache *ip6mr_cache_alloc(void) struct mfc6_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_KERNEL); if (!c) return NULL; - c->mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1; - c->mfc_un.res.minvif = MAXMIFS; + c->_c.mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1; + c->_c.mfc_un.res.minvif = MAXMIFS; return c; } @@ -1084,8 +1088,8 @@ static struct mfc6_cache *ip6mr_cache_alloc_unres(void) struct mfc6_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_ATOMIC); if (!c) return NULL; - skb_queue_head_init(&c->mfc_un.unres.unresolved); - c->mfc_un.unres.expires = jiffies + 10 * HZ; + skb_queue_head_init(&c->_c.mfc_un.unres.unresolved); + c->_c.mfc_un.unres.expires = jiffies + 10 * HZ; return c; } @@ -1102,7 +1106,7 @@ static void ip6mr_cache_resolve(struct net *net, struct mr_table *mrt, * Play the pending entries through our router */ - while ((skb = __skb_dequeue(&uc->mfc_un.unres.unresolved))) { + while ((skb = __skb_dequeue(&uc->_c.mfc_un.unres.unresolved))) { if (ipv6_hdr(skb)->version == 0) { struct nlmsghdr *nlh = skb_pull(skb, sizeof(struct ipv6hdr)); @@ -1221,19 +1225,16 @@ static int ip6mr_cache_report(struct mr_table *mrt, struct sk_buff *pkt, return ret; } -/* - * Queue a packet for resolution. It gets locked cache entry! - */ - -static int -ip6mr_cache_unresolved(struct mr_table *mrt, mifi_t mifi, struct sk_buff *skb) +/* Queue a packet for resolution. It gets locked cache entry! */ +static int ip6mr_cache_unresolved(struct mr_table *mrt, mifi_t mifi, + struct sk_buff *skb) { + struct mfc6_cache *c; bool found = false; int err; - struct mfc6_cache *c; spin_lock_bh(&mfc_unres_lock); - list_for_each_entry(c, &mrt->mfc_unres_queue, list) { + list_for_each_entry(c, &mrt->mfc_unres_queue, _c.list) { if (ipv6_addr_equal(&c->mf6c_mcastgrp, &ipv6_hdr(skb)->daddr) && ipv6_addr_equal(&c->mf6c_origin, &ipv6_hdr(skb)->saddr)) { found = true; @@ -1254,10 +1255,8 @@ ip6mr_cache_unresolved(struct mr_table *mrt, mifi_t mifi, struct sk_buff *skb) return -ENOBUFS; } - /* - * Fill in the new cache entry - */ - c->mf6c_parent = -1; + /* Fill in the new cache entry */ + c->_c.mfc_parent = -1; c->mf6c_origin = ipv6_hdr(skb)->saddr; c->mf6c_mcastgrp = ipv6_hdr(skb)->daddr; @@ -1277,20 +1276,18 @@ ip6mr_cache_unresolved(struct mr_table *mrt, mifi_t mifi, struct sk_buff *skb) } atomic_inc(&mrt->cache_resolve_queue_len); - list_add(&c->list, &mrt->mfc_unres_queue); + list_add(&c->_c.list, &mrt->mfc_unres_queue); mr6_netlink_event(mrt, c, RTM_NEWROUTE); ipmr_do_expire_process(mrt); } - /* - * See if we can append the packet - */ - if (c->mfc_un.unres.unresolved.qlen > 3) { + /* See if we can append the packet */ + if (c->_c.mfc_un.unres.unresolved.qlen > 3) { kfree_skb(skb); err = -ENOBUFS; } else { - skb_queue_tail(&c->mfc_un.unres.unresolved, skb); + skb_queue_tail(&c->_c.mfc_un.unres.unresolved, skb); err = 0; } @@ -1314,8 +1311,8 @@ static int ip6mr_mfc_delete(struct mr_table *mrt, struct mf6cctl *mfc, rcu_read_unlock(); if (!c) return -ENOENT; - rhltable_remove(&mrt->mfc_hash, &c->mnode, ip6mr_rht_params); - list_del_rcu(&c->list); + rhltable_remove(&mrt->mfc_hash, &c->_c.mnode, ip6mr_rht_params); + list_del_rcu(&c->_c.list); mr6_netlink_event(mrt, c, RTM_DELROUTE); ip6mr_cache_free(c); @@ -1454,6 +1451,7 @@ static int ip6mr_mfc_add(struct net *net, struct mr_table *mrt, { unsigned char ttls[MAXMIFS]; struct mfc6_cache *uc, *c; + struct mr_mfc *_uc; bool found; int i, err; @@ -1473,10 +1471,10 @@ static int ip6mr_mfc_add(struct net *net, struct mr_table *mrt, rcu_read_unlock(); if (c) { write_lock_bh(&mrt_lock); - c->mf6c_parent = mfc->mf6cc_parent; - ip6mr_update_thresholds(mrt, c, ttls); + c->_c.mfc_parent = mfc->mf6cc_parent; + ip6mr_update_thresholds(mrt, &c->_c, ttls); if (!mrtsock) - c->mfc_flags |= MFC_STATIC; + c->_c.mfc_flags |= MFC_STATIC; write_unlock_bh(&mrt_lock); mr6_netlink_event(mrt, c, RTM_NEWROUTE); return 0; @@ -1492,29 +1490,30 @@ static int ip6mr_mfc_add(struct net *net, struct mr_table *mrt, c->mf6c_origin = mfc->mf6cc_origin.sin6_addr; c->mf6c_mcastgrp = mfc->mf6cc_mcastgrp.sin6_addr; - c->mf6c_parent = mfc->mf6cc_parent; - ip6mr_update_thresholds(mrt, c, ttls); + c->_c.mfc_parent = mfc->mf6cc_parent; + ip6mr_update_thresholds(mrt, &c->_c, ttls); if (!mrtsock) - c->mfc_flags |= MFC_STATIC; + c->_c.mfc_flags |= MFC_STATIC; - err = rhltable_insert_key(&mrt->mfc_hash, &c->cmparg, &c->mnode, + err = rhltable_insert_key(&mrt->mfc_hash, &c->cmparg, &c->_c.mnode, ip6mr_rht_params); if (err) { pr_err("ip6mr: rhtable insert error %d\n", err); ip6mr_cache_free(c); return err; } - list_add_tail_rcu(&c->list, &mrt->mfc_cache_list); + list_add_tail_rcu(&c->_c.list, &mrt->mfc_cache_list); /* Check to see if we resolved a queued list. If so we * need to send on the frames and tidy up. */ found = false; spin_lock_bh(&mfc_unres_lock); - list_for_each_entry(uc, &mrt->mfc_unres_queue, list) { + list_for_each_entry(_uc, &mrt->mfc_unres_queue, list) { + uc = (struct mfc6_cache *)_uc; if (ipv6_addr_equal(&uc->mf6c_origin, &c->mf6c_origin) && ipv6_addr_equal(&uc->mf6c_mcastgrp, &c->mf6c_mcastgrp)) { - list_del(&uc->list); + list_del(&_uc->list); atomic_dec(&mrt->cache_resolve_queue_len); found = true; break; @@ -1538,7 +1537,7 @@ static int ip6mr_mfc_add(struct net *net, struct mr_table *mrt, static void mroute_clean_tables(struct mr_table *mrt, bool all) { - struct mfc6_cache *c, *tmp; + struct mr_mfc *c, *tmp; LIST_HEAD(list); int i; @@ -1556,16 +1555,17 @@ static void mroute_clean_tables(struct mr_table *mrt, bool all) continue; rhltable_remove(&mrt->mfc_hash, &c->mnode, ip6mr_rht_params); list_del_rcu(&c->list); - mr6_netlink_event(mrt, c, RTM_DELROUTE); - ip6mr_cache_free(c); + mr6_netlink_event(mrt, (struct mfc6_cache *)c, RTM_DELROUTE); + ip6mr_cache_free((struct mfc6_cache *)c); } if (atomic_read(&mrt->cache_resolve_queue_len) != 0) { spin_lock_bh(&mfc_unres_lock); list_for_each_entry_safe(c, tmp, &mrt->mfc_unres_queue, list) { list_del(&c->list); - mr6_netlink_event(mrt, c, RTM_DELROUTE); - ip6mr_destroy_unres(mrt, c); + mr6_netlink_event(mrt, (struct mfc6_cache *)c, + RTM_DELROUTE); + ip6mr_destroy_unres(mrt, (struct mfc6_cache *)c); } spin_unlock_bh(&mfc_unres_lock); } @@ -1899,9 +1899,9 @@ int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg) rcu_read_lock(); c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr); if (c) { - sr.pktcnt = c->mfc_un.res.pkt; - sr.bytecnt = c->mfc_un.res.bytes; - sr.wrong_if = c->mfc_un.res.wrong_if; + sr.pktcnt = c->_c.mfc_un.res.pkt; + sr.bytecnt = c->_c.mfc_un.res.bytes; + sr.wrong_if = c->_c.mfc_un.res.wrong_if; rcu_read_unlock(); if (copy_to_user(arg, &sr, sizeof(sr))) @@ -1973,9 +1973,9 @@ int ip6mr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg) rcu_read_lock(); c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr); if (c) { - sr.pktcnt = c->mfc_un.res.pkt; - sr.bytecnt = c->mfc_un.res.bytes; - sr.wrong_if = c->mfc_un.res.wrong_if; + sr.pktcnt = c->_c.mfc_un.res.pkt; + sr.bytecnt = c->_c.mfc_un.res.bytes; + sr.wrong_if = c->_c.mfc_un.res.wrong_if; rcu_read_unlock(); if (copy_to_user(arg, &sr, sizeof(sr))) @@ -2089,18 +2089,18 @@ static int ip6mr_find_vif(struct mr_table *mrt, struct net_device *dev) } static void ip6_mr_forward(struct net *net, struct mr_table *mrt, - struct sk_buff *skb, struct mfc6_cache *cache) + struct sk_buff *skb, struct mfc6_cache *c) { int psend = -1; int vif, ct; int true_vifi = ip6mr_find_vif(mrt, skb->dev); - vif = cache->mf6c_parent; - cache->mfc_un.res.pkt++; - cache->mfc_un.res.bytes += skb->len; - cache->mfc_un.res.lastuse = jiffies; + vif = c->_c.mfc_parent; + c->_c.mfc_un.res.pkt++; + c->_c.mfc_un.res.bytes += skb->len; + c->_c.mfc_un.res.lastuse = jiffies; - if (ipv6_addr_any(&cache->mf6c_origin) && true_vifi >= 0) { + if (ipv6_addr_any(&c->mf6c_origin) && true_vifi >= 0) { struct mfc6_cache *cache_proxy; /* For an (*,G) entry, we only check that the incoming @@ -2109,7 +2109,7 @@ static void ip6_mr_forward(struct net *net, struct mr_table *mrt, rcu_read_lock(); cache_proxy = ip6mr_cache_find_any_parent(mrt, vif); if (cache_proxy && - cache_proxy->mfc_un.res.ttls[true_vifi] < 255) { + cache_proxy->_c.mfc_un.res.ttls[true_vifi] < 255) { rcu_read_unlock(); goto forward; } @@ -2120,7 +2120,7 @@ static void ip6_mr_forward(struct net *net, struct mr_table *mrt, * Wrong interface: drop packet and (maybe) send PIM assert. */ if (mrt->vif_table[vif].dev != skb->dev) { - cache->mfc_un.res.wrong_if++; + c->_c.mfc_un.res.wrong_if++; if (true_vifi >= 0 && mrt->mroute_do_assert && /* pimsm uses asserts, when switching from RPT to SPT, @@ -2129,10 +2129,11 @@ static void ip6_mr_forward(struct net *net, struct mr_table *mrt, large chunk of pimd to kernel. Ough... --ANK */ (mrt->mroute_do_pim || - cache->mfc_un.res.ttls[true_vifi] < 255) && + c->_c.mfc_un.res.ttls[true_vifi] < 255) && time_after(jiffies, - cache->mfc_un.res.last_assert + MFC_ASSERT_THRESH)) { - cache->mfc_un.res.last_assert = jiffies; + c->_c.mfc_un.res.last_assert + + MFC_ASSERT_THRESH)) { + c->_c.mfc_un.res.last_assert = jiffies; ip6mr_cache_report(mrt, skb, true_vifi, MRT6MSG_WRONGMIF); } goto dont_forward; @@ -2145,36 +2146,38 @@ forward: /* * Forward the frame */ - if (ipv6_addr_any(&cache->mf6c_origin) && - ipv6_addr_any(&cache->mf6c_mcastgrp)) { + if (ipv6_addr_any(&c->mf6c_origin) && + ipv6_addr_any(&c->mf6c_mcastgrp)) { if (true_vifi >= 0 && - true_vifi != cache->mf6c_parent && + true_vifi != c->_c.mfc_parent && ipv6_hdr(skb)->hop_limit > - cache->mfc_un.res.ttls[cache->mf6c_parent]) { + c->_c.mfc_un.res.ttls[c->_c.mfc_parent]) { /* It's an (*,*) entry and the packet is not coming from * the upstream: forward the packet to the upstream * only. */ - psend = cache->mf6c_parent; + psend = c->_c.mfc_parent; goto last_forward; } goto dont_forward; } - for (ct = cache->mfc_un.res.maxvif - 1; ct >= cache->mfc_un.res.minvif; ct--) { + for (ct = c->_c.mfc_un.res.maxvif - 1; + ct >= c->_c.mfc_un.res.minvif; ct--) { /* For (*,G) entry, don't forward to the incoming interface */ - if ((!ipv6_addr_any(&cache->mf6c_origin) || ct != true_vifi) && - ipv6_hdr(skb)->hop_limit > cache->mfc_un.res.ttls[ct]) { + if ((!ipv6_addr_any(&c->mf6c_origin) || ct != true_vifi) && + ipv6_hdr(skb)->hop_limit > c->_c.mfc_un.res.ttls[ct]) { if (psend != -1) { struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC); if (skb2) - ip6mr_forward2(net, mrt, skb2, cache, psend); + ip6mr_forward2(net, mrt, skb2, + c, psend); } psend = ct; } } last_forward: if (psend != -1) { - ip6mr_forward2(net, mrt, skb, cache, psend); + ip6mr_forward2(net, mrt, skb, c, psend); return; } @@ -2252,21 +2255,22 @@ static int __ip6mr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb, int ct; /* If cache is unresolved, don't try to parse IIF and OIF */ - if (c->mf6c_parent >= MAXMIFS) { + if (c->_c.mfc_parent >= MAXMIFS) { rtm->rtm_flags |= RTNH_F_UNRESOLVED; return -ENOENT; } - if (VIF_EXISTS(mrt, c->mf6c_parent) && + if (VIF_EXISTS(mrt, c->_c.mfc_parent) && nla_put_u32(skb, RTA_IIF, - mrt->vif_table[c->mf6c_parent].dev->ifindex) < 0) + mrt->vif_table[c->_c.mfc_parent].dev->ifindex) < 0) return -EMSGSIZE; mp_attr = nla_nest_start(skb, RTA_MULTIPATH); if (!mp_attr) return -EMSGSIZE; - for (ct = c->mfc_un.res.minvif; ct < c->mfc_un.res.maxvif; ct++) { - if (VIF_EXISTS(mrt, ct) && c->mfc_un.res.ttls[ct] < 255) { + for (ct = c->_c.mfc_un.res.minvif; + ct < c->_c.mfc_un.res.maxvif; ct++) { + if (VIF_EXISTS(mrt, ct) && c->_c.mfc_un.res.ttls[ct] < 255) { nhp = nla_reserve_nohdr(skb, sizeof(*nhp)); if (!nhp) { nla_nest_cancel(skb, mp_attr); @@ -2274,7 +2278,7 @@ static int __ip6mr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb, } nhp->rtnh_flags = 0; - nhp->rtnh_hops = c->mfc_un.res.ttls[ct]; + nhp->rtnh_hops = c->_c.mfc_un.res.ttls[ct]; nhp->rtnh_ifindex = mrt->vif_table[ct].dev->ifindex; nhp->rtnh_len = sizeof(*nhp); } @@ -2282,12 +2286,12 @@ static int __ip6mr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb, nla_nest_end(skb, mp_attr); - lastuse = READ_ONCE(c->mfc_un.res.lastuse); + lastuse = READ_ONCE(c->_c.mfc_un.res.lastuse); lastuse = time_after_eq(jiffies, lastuse) ? jiffies - lastuse : 0; - mfcs.mfcs_packets = c->mfc_un.res.pkt; - mfcs.mfcs_bytes = c->mfc_un.res.bytes; - mfcs.mfcs_wrong_if = c->mfc_un.res.wrong_if; + mfcs.mfcs_packets = c->_c.mfc_un.res.pkt; + mfcs.mfcs_bytes = c->_c.mfc_un.res.bytes; + mfcs.mfcs_wrong_if = c->_c.mfc_un.res.wrong_if; if (nla_put_64bit(skb, RTA_MFC_STATS, sizeof(mfcs), &mfcs, RTA_PAD) || nla_put_u64_64bit(skb, RTA_EXPIRES, jiffies_to_clock_t(lastuse), RTA_PAD)) @@ -2363,7 +2367,7 @@ int ip6mr_get_route(struct net *net, struct sk_buff *skb, struct rtmsg *rtm, } if (rtm->rtm_flags & RTM_F_NOTIFY) - cache->mfc_flags |= MFC_NOTIFY; + cache->_c.mfc_flags |= MFC_NOTIFY; err = __ip6mr_fill_mroute(mrt, skb, cache, rtm); read_unlock(&mrt_lock); @@ -2392,7 +2396,7 @@ static int ip6mr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb, goto nla_put_failure; rtm->rtm_type = RTN_MULTICAST; rtm->rtm_scope = RT_SCOPE_UNIVERSE; - if (c->mfc_flags & MFC_STATIC) + if (c->_c.mfc_flags & MFC_STATIC) rtm->rtm_protocol = RTPROT_STATIC; else rtm->rtm_protocol = RTPROT_MROUTED; @@ -2442,7 +2446,7 @@ static void mr6_netlink_event(struct mr_table *mrt, struct mfc6_cache *mfc, struct sk_buff *skb; int err = -ENOBUFS; - skb = nlmsg_new(mr6_msgsize(mfc->mf6c_parent >= MAXMIFS, mrt->maxvif), + skb = nlmsg_new(mr6_msgsize(mfc->_c.mfc_parent >= MAXMIFS, mrt->maxvif), GFP_ATOMIC); if (!skb) goto errout; @@ -2528,10 +2532,10 @@ errout: static int ip6mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb) { struct net *net = sock_net(skb->sk); - struct mr_table *mrt; - struct mfc6_cache *mfc; unsigned int t = 0, s_t; unsigned int e = 0, s_e; + struct mr_table *mrt; + struct mr_mfc *mfc; s_t = cb->args[0]; s_e = cb->args[1]; @@ -2546,8 +2550,8 @@ static int ip6mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb) if (ip6mr_fill_mroute(mrt, skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, - mfc, RTM_NEWROUTE, - NLM_F_MULTI) < 0) + (struct mfc6_cache *)mfc, + RTM_NEWROUTE, NLM_F_MULTI) < 0) goto done; next_entry: e++; @@ -2562,8 +2566,8 @@ next_entry: if (ip6mr_fill_mroute(mrt, skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, - mfc, RTM_NEWROUTE, - NLM_F_MULTI) < 0) { + (struct mfc6_cache *)mfc, + RTM_NEWROUTE, NLM_F_MULTI) < 0) { spin_unlock_bh(&mfc_unres_lock); goto done; } -- cgit v1.2.3