From c98501879b1b1af90c7325574f2672e9efca592c Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Mon, 26 Sep 2016 12:52:30 +0200 Subject: fib: introduce FIB info offload flag helpers These helpers are to be used in case someone offloads the FIB entry. The result is that if the entry is offloaded to at least one device, the offload flag is set. Signed-off-by: Jiri Pirko Reviewed-by: Ido Schimmel Signed-off-by: David S. Miller --- net/switchdev/switchdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/switchdev/switchdev.c') diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c index 10b819308439..abd8d2a38a7d 100644 --- a/net/switchdev/switchdev.c +++ b/net/switchdev/switchdev.c @@ -1216,7 +1216,7 @@ int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi, ipv4_fib.obj.orig_dev = dev; err = switchdev_port_obj_add(dev, &ipv4_fib.obj); if (!err) - fi->fib_flags |= RTNH_F_OFFLOAD; + fib_info_offload_inc(fi); return err == -EOPNOTSUPP ? 0 : err; } @@ -1260,7 +1260,7 @@ int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi, ipv4_fib.obj.orig_dev = dev; err = switchdev_port_obj_del(dev, &ipv4_fib.obj); if (!err) - fi->fib_flags &= ~RTNH_F_OFFLOAD; + fib_info_offload_dec(fi); return err == -EOPNOTSUPP ? 0 : err; } -- cgit v1.2.3 From 347e3b28c1ba24c1ae2f30290d8247480ab9ce14 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Mon, 26 Sep 2016 12:52:33 +0200 Subject: switchdev: remove FIB offload infrastructure Since this is now taken care of by FIB notifier, remove the code, with all unused dependencies. Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- include/net/ip_fib.h | 2 - include/net/switchdev.h | 40 ---------- net/ipv4/fib_frontend.c | 13 ---- net/ipv4/fib_rules.c | 2 - net/ipv4/fib_trie.c | 104 +------------------------- net/switchdev/switchdev.c | 181 ---------------------------------------------- 6 files changed, 1 insertion(+), 341 deletions(-) (limited to 'net/switchdev/switchdev.c') diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h index ffccf1787914..b9314b48e39f 100644 --- a/include/net/ip_fib.h +++ b/include/net/ip_fib.h @@ -243,7 +243,6 @@ int fib_table_dump(struct fib_table *table, struct sk_buff *skb, struct netlink_callback *cb); int fib_table_flush(struct net *net, struct fib_table *table); struct fib_table *fib_trie_unmerge(struct fib_table *main_tb); -void fib_table_flush_external(struct fib_table *table); void fib_free_table(struct fib_table *tb); #ifndef CONFIG_IP_MULTIPLE_TABLES @@ -356,7 +355,6 @@ static inline int fib_num_tclassid_users(struct net *net) } #endif int fib_unmerge(struct net *net); -void fib_flush_external(struct net *net); /* Exported by fib_semantics.c */ int ip_fib_check_default(__be32 gw, struct net_device *dev); diff --git a/include/net/switchdev.h b/include/net/switchdev.h index 729fe1534160..eba80c4fc56f 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -68,7 +68,6 @@ struct switchdev_attr { enum switchdev_obj_id { SWITCHDEV_OBJ_ID_UNDEFINED, SWITCHDEV_OBJ_ID_PORT_VLAN, - SWITCHDEV_OBJ_ID_IPV4_FIB, SWITCHDEV_OBJ_ID_PORT_FDB, SWITCHDEV_OBJ_ID_PORT_MDB, }; @@ -92,21 +91,6 @@ struct switchdev_obj_port_vlan { #define SWITCHDEV_OBJ_PORT_VLAN(obj) \ container_of(obj, struct switchdev_obj_port_vlan, obj) -/* SWITCHDEV_OBJ_ID_IPV4_FIB */ -struct switchdev_obj_ipv4_fib { - struct switchdev_obj obj; - u32 dst; - int dst_len; - struct fib_info *fi; - u8 tos; - u8 type; - u32 nlflags; - u32 tb_id; -}; - -#define SWITCHDEV_OBJ_IPV4_FIB(obj) \ - container_of(obj, struct switchdev_obj_ipv4_fib, obj) - /* SWITCHDEV_OBJ_ID_PORT_FDB */ struct switchdev_obj_port_fdb { struct switchdev_obj obj; @@ -209,11 +193,6 @@ int switchdev_port_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags); int switchdev_port_bridge_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags); -int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi, - u8 tos, u8 type, u32 nlflags, u32 tb_id); -int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi, - u8 tos, u8 type, u32 tb_id); -void switchdev_fib_ipv4_abort(struct fib_info *fi); int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, const unsigned char *addr, u16 vid, u16 nlm_flags); @@ -304,25 +283,6 @@ static inline int switchdev_port_bridge_dellink(struct net_device *dev, return -EOPNOTSUPP; } -static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len, - struct fib_info *fi, - u8 tos, u8 type, - u32 nlflags, u32 tb_id) -{ - return 0; -} - -static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len, - struct fib_info *fi, - u8 tos, u8 type, u32 tb_id) -{ - return 0; -} - -static inline void switchdev_fib_ipv4_abort(struct fib_info *fi) -{ -} - static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, const unsigned char *addr, diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index 86c43dc9a60e..c3b80478226e 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -189,19 +189,6 @@ static void fib_flush(struct net *net) rt_cache_flush(net); } -void fib_flush_external(struct net *net) -{ - struct fib_table *tb; - struct hlist_head *head; - unsigned int h; - - for (h = 0; h < FIB_TABLE_HASHSZ; h++) { - head = &net->ipv4.fib_table_hash[h]; - hlist_for_each_entry(tb, head, tb_hlist) - fib_table_flush_external(tb); - } -} - /* * Find address type as if only "dev" was present in the system. If * on_dev is NULL then all interfaces are taken into consideration. diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c index ebadf6b99499..2e50062f642d 100644 --- a/net/ipv4/fib_rules.c +++ b/net/ipv4/fib_rules.c @@ -228,7 +228,6 @@ static int fib4_rule_configure(struct fib_rule *rule, struct sk_buff *skb, rule4->tos = frh->tos; net->ipv4.fib_has_custom_rules = true; - fib_flush_external(rule->fr_net); call_fib_rule_notifiers(net, FIB_EVENT_RULE_ADD); err = 0; @@ -251,7 +250,6 @@ static int fib4_rule_delete(struct fib_rule *rule) net->ipv4.fib_num_tclassid_users--; #endif net->ipv4.fib_has_custom_rules = true; - fib_flush_external(rule->fr_net); call_fib_rule_notifiers(net, FIB_EVENT_RULE_DEL); errout: return err; diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 51a4537eb145..31cef3602585 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -81,7 +81,6 @@ #include #include #include -#include #include #include "fib_lookup.h" @@ -1215,17 +1214,6 @@ int fib_table_insert(struct net *net, struct fib_table *tb, new_fa->tb_id = tb->tb_id; new_fa->fa_default = -1; - err = switchdev_fib_ipv4_add(key, plen, fi, - new_fa->fa_tos, - cfg->fc_type, - cfg->fc_nlflags, - tb->tb_id); - if (err) { - switchdev_fib_ipv4_abort(fi); - kmem_cache_free(fn_alias_kmem, new_fa); - goto out; - } - hlist_replace_rcu(&fa->fa_list, &new_fa->fa_list); alias_free_mem_rcu(fa); @@ -1273,18 +1261,10 @@ int fib_table_insert(struct net *net, struct fib_table *tb, new_fa->tb_id = tb->tb_id; new_fa->fa_default = -1; - /* (Optionally) offload fib entry to switch hardware. */ - err = switchdev_fib_ipv4_add(key, plen, fi, tos, cfg->fc_type, - cfg->fc_nlflags, tb->tb_id); - if (err) { - switchdev_fib_ipv4_abort(fi); - goto out_free_new_fa; - } - /* Insert new entry to the list. */ err = fib_insert_alias(t, tp, l, new_fa, fa, key); if (err) - goto out_sw_fib_del; + goto out_free_new_fa; if (!plen) tb->tb_num_default++; @@ -1297,8 +1277,6 @@ int fib_table_insert(struct net *net, struct fib_table *tb, succeeded: return 0; -out_sw_fib_del: - switchdev_fib_ipv4_del(key, plen, fi, tos, cfg->fc_type, tb->tb_id); out_free_new_fa: kmem_cache_free(fn_alias_kmem, new_fa); out: @@ -1591,9 +1569,6 @@ int fib_table_delete(struct net *net, struct fib_table *tb, if (!fa_to_delete) return -ESRCH; - switchdev_fib_ipv4_del(key, plen, fa_to_delete->fa_info, tos, - cfg->fc_type, tb->tb_id); - call_fib_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, key, plen, fa_to_delete->fa_info, tos, cfg->fc_type, tb->tb_id, 0); @@ -1785,80 +1760,6 @@ out: return NULL; } -/* Caller must hold RTNL */ -void fib_table_flush_external(struct fib_table *tb) -{ - struct trie *t = (struct trie *)tb->tb_data; - struct key_vector *pn = t->kv; - unsigned long cindex = 1; - struct hlist_node *tmp; - struct fib_alias *fa; - - /* walk trie in reverse order */ - for (;;) { - unsigned char slen = 0; - struct key_vector *n; - - if (!(cindex--)) { - t_key pkey = pn->key; - - /* cannot resize the trie vector */ - if (IS_TRIE(pn)) - break; - - /* resize completed node */ - pn = resize(t, pn); - cindex = get_index(pkey, pn); - - continue; - } - - /* grab the next available node */ - n = get_child(pn, cindex); - if (!n) - continue; - - if (IS_TNODE(n)) { - /* record pn and cindex for leaf walking */ - pn = n; - cindex = 1ul << n->bits; - - continue; - } - - hlist_for_each_entry_safe(fa, tmp, &n->leaf, fa_list) { - struct fib_info *fi = fa->fa_info; - - /* if alias was cloned to local then we just - * need to remove the local copy from main - */ - if (tb->tb_id != fa->tb_id) { - hlist_del_rcu(&fa->fa_list); - alias_free_mem_rcu(fa); - continue; - } - - /* record local slen */ - slen = fa->fa_slen; - - if (!fi || !(fi->fib_flags & RTNH_F_OFFLOAD)) - continue; - - switchdev_fib_ipv4_del(n->key, KEYLENGTH - fa->fa_slen, - fi, fa->fa_tos, fa->fa_type, - tb->tb_id); - } - - /* update leaf slen */ - n->slen = slen; - - if (hlist_empty(&n->leaf)) { - put_child_root(pn, n->key, NULL); - node_free(n); - } - } -} - /* Caller must hold RTNL. */ int fib_table_flush(struct net *net, struct fib_table *tb) { @@ -1909,9 +1810,6 @@ int fib_table_flush(struct net *net, struct fib_table *tb) continue; } - switchdev_fib_ipv4_del(n->key, KEYLENGTH - fa->fa_slen, - fi, fa->fa_tos, fa->fa_type, - tb->tb_id); call_fib_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, n->key, KEYLENGTH - fa->fa_slen, diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c index abd8d2a38a7d..02beb35f577f 100644 --- a/net/switchdev/switchdev.c +++ b/net/switchdev/switchdev.c @@ -21,7 +21,6 @@ #include #include #include -#include #include /** @@ -344,8 +343,6 @@ static size_t switchdev_obj_size(const struct switchdev_obj *obj) switch (obj->id) { case SWITCHDEV_OBJ_ID_PORT_VLAN: return sizeof(struct switchdev_obj_port_vlan); - case SWITCHDEV_OBJ_ID_IPV4_FIB: - return sizeof(struct switchdev_obj_ipv4_fib); case SWITCHDEV_OBJ_ID_PORT_FDB: return sizeof(struct switchdev_obj_port_fdb); case SWITCHDEV_OBJ_ID_PORT_MDB: @@ -1108,184 +1105,6 @@ int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, } EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump); -static struct net_device *switchdev_get_lowest_dev(struct net_device *dev) -{ - const struct switchdev_ops *ops = dev->switchdev_ops; - struct net_device *lower_dev; - struct net_device *port_dev; - struct list_head *iter; - - /* Recusively search down until we find a sw port dev. - * (A sw port dev supports switchdev_port_attr_get). - */ - - if (ops && ops->switchdev_port_attr_get) - return dev; - - netdev_for_each_lower_dev(dev, lower_dev, iter) { - port_dev = switchdev_get_lowest_dev(lower_dev); - if (port_dev) - return port_dev; - } - - return NULL; -} - -static struct net_device *switchdev_get_dev_by_nhs(struct fib_info *fi) -{ - struct switchdev_attr attr = { - .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, - }; - struct switchdev_attr prev_attr; - struct net_device *dev = NULL; - int nhsel; - - ASSERT_RTNL(); - - /* For this route, all nexthop devs must be on the same switch. */ - - for (nhsel = 0; nhsel < fi->fib_nhs; nhsel++) { - const struct fib_nh *nh = &fi->fib_nh[nhsel]; - - if (!nh->nh_dev) - return NULL; - - dev = switchdev_get_lowest_dev(nh->nh_dev); - if (!dev) - return NULL; - - attr.orig_dev = dev; - if (switchdev_port_attr_get(dev, &attr)) - return NULL; - - if (nhsel > 0 && - !netdev_phys_item_id_same(&prev_attr.u.ppid, &attr.u.ppid)) - return NULL; - - prev_attr = attr; - } - - return dev; -} - -/** - * switchdev_fib_ipv4_add - Add/modify switch IPv4 route entry - * - * @dst: route's IPv4 destination address - * @dst_len: destination address length (prefix length) - * @fi: route FIB info structure - * @tos: route TOS - * @type: route type - * @nlflags: netlink flags passed in (NLM_F_*) - * @tb_id: route table ID - * - * Add/modify switch IPv4 route entry. - */ -int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi, - u8 tos, u8 type, u32 nlflags, u32 tb_id) -{ - struct switchdev_obj_ipv4_fib ipv4_fib = { - .obj.id = SWITCHDEV_OBJ_ID_IPV4_FIB, - .dst = dst, - .dst_len = dst_len, - .fi = fi, - .tos = tos, - .type = type, - .nlflags = nlflags, - .tb_id = tb_id, - }; - struct net_device *dev; - int err = 0; - - /* Don't offload route if using custom ip rules or if - * IPv4 FIB offloading has been disabled completely. - */ - -#ifdef CONFIG_IP_MULTIPLE_TABLES - if (fi->fib_net->ipv4.fib_has_custom_rules) - return 0; -#endif - - if (fi->fib_net->ipv4.fib_offload_disabled) - return 0; - - dev = switchdev_get_dev_by_nhs(fi); - if (!dev) - return 0; - - ipv4_fib.obj.orig_dev = dev; - err = switchdev_port_obj_add(dev, &ipv4_fib.obj); - if (!err) - fib_info_offload_inc(fi); - - return err == -EOPNOTSUPP ? 0 : err; -} -EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_add); - -/** - * switchdev_fib_ipv4_del - Delete IPv4 route entry from switch - * - * @dst: route's IPv4 destination address - * @dst_len: destination address length (prefix length) - * @fi: route FIB info structure - * @tos: route TOS - * @type: route type - * @tb_id: route table ID - * - * Delete IPv4 route entry from switch device. - */ -int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi, - u8 tos, u8 type, u32 tb_id) -{ - struct switchdev_obj_ipv4_fib ipv4_fib = { - .obj.id = SWITCHDEV_OBJ_ID_IPV4_FIB, - .dst = dst, - .dst_len = dst_len, - .fi = fi, - .tos = tos, - .type = type, - .nlflags = 0, - .tb_id = tb_id, - }; - struct net_device *dev; - int err = 0; - - if (!(fi->fib_flags & RTNH_F_OFFLOAD)) - return 0; - - dev = switchdev_get_dev_by_nhs(fi); - if (!dev) - return 0; - - ipv4_fib.obj.orig_dev = dev; - err = switchdev_port_obj_del(dev, &ipv4_fib.obj); - if (!err) - fib_info_offload_dec(fi); - - return err == -EOPNOTSUPP ? 0 : err; -} -EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_del); - -/** - * switchdev_fib_ipv4_abort - Abort an IPv4 FIB operation - * - * @fi: route FIB info structure - */ -void switchdev_fib_ipv4_abort(struct fib_info *fi) -{ - /* There was a problem installing this route to the offload - * device. For now, until we come up with more refined - * policy handling, abruptly end IPv4 fib offloading for - * for entire net by flushing offload device(s) of all - * IPv4 routes, and mark IPv4 fib offloading broken from - * this point forward. - */ - - fib_flush_external(fi->fib_net); - fi->fib_net->ipv4.fib_offload_disabled = true; -} -EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_abort); - bool switchdev_port_same_parent_id(struct net_device *a, struct net_device *b) { -- cgit v1.2.3