From 5481d73f81549e2a05cbbb49867a9a560c5292df Mon Sep 17 00:00:00 2001 From: David Ahern Date: Mon, 3 Jun 2019 20:19:49 -0700 Subject: [PATCH] ipv4: Use accessors for fib_info nexthop data Use helpers to access fib_nh and fib_nhs fields of a fib_info. Drop the fib_dev macro which is an alias for the first nexthop. Replacements: fi->fib_dev --> fib_info_nh(fi, 0)->fib_nh_dev fi->fib_nh --> fib_info_nh(fi, 0) fi->fib_nh[i] --> fib_info_nh(fi, i) fi->fib_nhs --> fib_info_num_path(fi) where fib_info_nh(fi, i) returns fi->fib_nh[nhsel] and fib_info_num_path returns fi->fib_nhs. Move the existing fib_info_nhc to nexthop.h and define the new ones there. A later patch adds a check if a fib_info uses a nexthop object, and defining the helpers in nexthop.h avoid circular header dependencies. After this all remaining open coded references to fi->fib_nhs and fi->fib_nh are in: - fib_create_info and helpers used to lookup an existing fib_info entry, and - the netdev event functions fib_sync_down_dev and fib_sync_up. The latter two will not be reused for nexthops, and the fib_create_info will be updated to handle a nexthop in a fib_info. Signed-off-by: David Ahern Signed-off-by: David S. Miller --- .../net/ethernet/mellanox/mlx5/core/lag_mp.c | 29 +++++--- .../ethernet/mellanox/mlxsw/spectrum_router.c | 19 +++--- drivers/net/ethernet/rocker/rocker_ofdpa.c | 25 ++++--- include/net/ip_fib.h | 6 -- include/net/nexthop.h | 15 +++++ net/core/filter.c | 3 +- net/ipv4/fib_frontend.c | 11 ++-- net/ipv4/fib_lookup.h | 1 + net/ipv4/fib_rules.c | 8 ++- net/ipv4/fib_semantics.c | 66 +++++++++++-------- net/ipv4/fib_trie.c | 26 +++++--- net/ipv4/route.c | 3 +- 12 files changed, 132 insertions(+), 80 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c b/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c index 8212bfd05733..2cbfaa8da7fc 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lag_mp.c @@ -2,6 +2,7 @@ /* Copyright (c) 2019 Mellanox Technologies. */ #include +#include #include "lag.h" #include "lag_mp.h" #include "mlx5_core.h" @@ -110,6 +111,8 @@ static void mlx5_lag_fib_route_event(struct mlx5_lag *ldev, struct fib_info *fi) { struct lag_mp *mp = &ldev->lag_mp; + struct fib_nh *fib_nh0, *fib_nh1; + unsigned int nhs; /* Handle delete event */ if (event == FIB_EVENT_ENTRY_DEL) { @@ -120,9 +123,11 @@ static void mlx5_lag_fib_route_event(struct mlx5_lag *ldev, } /* Handle add/replace event */ - if (fi->fib_nhs == 1) { + nhs = fib_info_num_path(fi); + if (nhs == 1) { if (__mlx5_lag_is_active(ldev)) { - struct net_device *nh_dev = fi->fib_nh[0].fib_nh_dev; + struct fib_nh *nh = fib_info_nh(fi, 0); + struct net_device *nh_dev = nh->fib_nh_dev; int i = mlx5_lag_dev_get_netdev_idx(ldev, nh_dev); mlx5_lag_set_port_affinity(ldev, ++i); @@ -130,14 +135,16 @@ static void mlx5_lag_fib_route_event(struct mlx5_lag *ldev, return; } - if (fi->fib_nhs != 2) + if (nhs != 2) return; /* Verify next hops are ports of the same hca */ - if (!(fi->fib_nh[0].fib_nh_dev == ldev->pf[0].netdev && - fi->fib_nh[1].fib_nh_dev == ldev->pf[1].netdev) && - !(fi->fib_nh[0].fib_nh_dev == ldev->pf[1].netdev && - fi->fib_nh[1].fib_nh_dev == ldev->pf[0].netdev)) { + fib_nh0 = fib_info_nh(fi, 0); + fib_nh1 = fib_info_nh(fi, 1); + if (!(fib_nh0->fib_nh_dev == ldev->pf[0].netdev && + fib_nh1->fib_nh_dev == ldev->pf[1].netdev) && + !(fib_nh0->fib_nh_dev == ldev->pf[1].netdev && + fib_nh1->fib_nh_dev == ldev->pf[0].netdev)) { mlx5_core_warn(ldev->pf[0].dev, "Multipath offload require two ports of the same HCA\n"); return; } @@ -174,7 +181,7 @@ static void mlx5_lag_fib_nexthop_event(struct mlx5_lag *ldev, mlx5_lag_set_port_affinity(ldev, i); } } else if (event == FIB_EVENT_NH_ADD && - fi->fib_nhs == 2) { + fib_info_num_path(fi) == 2) { mlx5_lag_set_port_affinity(ldev, 0); } } @@ -238,6 +245,7 @@ static int mlx5_lag_fib_event(struct notifier_block *nb, struct mlx5_fib_event_work *fib_work; struct fib_entry_notifier_info *fen_info; struct fib_nh_notifier_info *fnh_info; + struct net_device *fib_dev; struct fib_info *fi; if (info->family != AF_INET) @@ -254,8 +262,9 @@ static int mlx5_lag_fib_event(struct notifier_block *nb, fen_info = container_of(info, struct fib_entry_notifier_info, info); fi = fen_info->fi; - if (fi->fib_dev != ldev->pf[0].netdev && - fi->fib_dev != ldev->pf[1].netdev) { + fib_dev = fib_info_nh(fen_info->fi, 0)->fib_nh_dev; + if (fib_dev != ldev->pf[0].netdev && + fib_dev != ldev->pf[1].netdev) { return NOTIFY_DONE; } fib_work = mlx5_lag_init_fib_work(ldev, event); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index 0ec52be7cc33..4f781358aef1 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -3816,23 +3817,25 @@ static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, } static bool mlxsw_sp_fi_is_gateway(const struct mlxsw_sp *mlxsw_sp, - const struct fib_info *fi) + struct fib_info *fi) { - return fi->fib_nh->fib_nh_scope == RT_SCOPE_LINK || - mlxsw_sp_nexthop4_ipip_type(mlxsw_sp, fi->fib_nh, NULL); + const struct fib_nh *nh = fib_info_nh(fi, 0); + + return nh->fib_nh_scope == RT_SCOPE_LINK || + mlxsw_sp_nexthop4_ipip_type(mlxsw_sp, nh, NULL); } static struct mlxsw_sp_nexthop_group * mlxsw_sp_nexthop4_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) { + unsigned int nhs = fib_info_num_path(fi); struct mlxsw_sp_nexthop_group *nh_grp; struct mlxsw_sp_nexthop *nh; struct fib_nh *fib_nh; int i; int err; - nh_grp = kzalloc(struct_size(nh_grp, nexthops, fi->fib_nhs), - GFP_KERNEL); + nh_grp = kzalloc(struct_size(nh_grp, nexthops, nhs), GFP_KERNEL); if (!nh_grp) return ERR_PTR(-ENOMEM); nh_grp->priv = fi; @@ -3840,11 +3843,11 @@ mlxsw_sp_nexthop4_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) nh_grp->neigh_tbl = &arp_tbl; nh_grp->gateway = mlxsw_sp_fi_is_gateway(mlxsw_sp, fi); - nh_grp->count = fi->fib_nhs; + nh_grp->count = nhs; fib_info_hold(fi); for (i = 0; i < nh_grp->count; i++) { nh = &nh_grp->nexthops[i]; - fib_nh = &fi->fib_nh[i]; + fib_nh = fib_info_nh(fi, i); err = mlxsw_sp_nexthop4_init(mlxsw_sp, nh_grp, nh, fib_nh); if (err) goto err_nexthop4_init; @@ -4282,9 +4285,9 @@ mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp, const struct fib_entry_notifier_info *fen_info, struct mlxsw_sp_fib_entry *fib_entry) { + struct net_device *dev = fib_info_nh(fen_info->fi, 0)->fib_nh_dev; union mlxsw_sp_l3addr dip = { .addr4 = htonl(fen_info->dst) }; u32 tb_id = mlxsw_sp_fix_tb_id(fen_info->tb_id); - struct net_device *dev = fen_info->fi->fib_dev; struct mlxsw_sp_ipip_entry *ipip_entry; struct fib_info *fi = fen_info->fi; diff --git a/drivers/net/ethernet/rocker/rocker_ofdpa.c b/drivers/net/ethernet/rocker/rocker_ofdpa.c index 30a49802fb51..47ed9d41047f 100644 --- a/drivers/net/ethernet/rocker/rocker_ofdpa.c +++ b/drivers/net/ethernet/rocker/rocker_ofdpa.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include "rocker.h" @@ -2286,8 +2287,8 @@ static int ofdpa_port_fib_ipv4(struct ofdpa_port *ofdpa_port, __be32 dst, /* XXX support ECMP */ - nh = fi->fib_nh; - nh_on_port = (fi->fib_dev == ofdpa_port->dev); + nh = fib_info_nh(fi, 0); + nh_on_port = (nh->fib_nh_dev == ofdpa_port->dev); has_gw = !!nh->fib_nh_gw4; if (has_gw && nh_on_port) { @@ -2737,11 +2738,13 @@ static int ofdpa_fib4_add(struct rocker *rocker, { struct ofdpa *ofdpa = rocker->wpriv; struct ofdpa_port *ofdpa_port; + struct fib_nh *nh; int err; if (ofdpa->fib_aborted) return 0; - ofdpa_port = ofdpa_port_dev_lower_find(fen_info->fi->fib_dev, rocker); + nh = fib_info_nh(fen_info->fi, 0); + ofdpa_port = ofdpa_port_dev_lower_find(nh->fib_nh_dev, rocker); if (!ofdpa_port) return 0; err = ofdpa_port_fib_ipv4(ofdpa_port, htonl(fen_info->dst), @@ -2749,7 +2752,7 @@ static int ofdpa_fib4_add(struct rocker *rocker, fen_info->tb_id, 0); if (err) return err; - fen_info->fi->fib_nh->fib_nh_flags |= RTNH_F_OFFLOAD; + nh->fib_nh_flags |= RTNH_F_OFFLOAD; return 0; } @@ -2758,13 +2761,15 @@ static int ofdpa_fib4_del(struct rocker *rocker, { struct ofdpa *ofdpa = rocker->wpriv; struct ofdpa_port *ofdpa_port; + struct fib_nh *nh; if (ofdpa->fib_aborted) return 0; - ofdpa_port = ofdpa_port_dev_lower_find(fen_info->fi->fib_dev, rocker); + nh = fib_info_nh(fen_info->fi, 0); + ofdpa_port = ofdpa_port_dev_lower_find(nh->fib_nh_dev, rocker); if (!ofdpa_port) return 0; - fen_info->fi->fib_nh->fib_nh_flags &= ~RTNH_F_OFFLOAD; + nh->fib_nh_flags &= ~RTNH_F_OFFLOAD; return ofdpa_port_fib_ipv4(ofdpa_port, htonl(fen_info->dst), fen_info->dst_len, fen_info->fi, fen_info->tb_id, OFDPA_OP_FLAG_REMOVE); @@ -2784,14 +2789,16 @@ static void ofdpa_fib4_abort(struct rocker *rocker) spin_lock_irqsave(&ofdpa->flow_tbl_lock, flags); hash_for_each_safe(ofdpa->flow_tbl, bkt, tmp, flow_entry, entry) { + struct fib_nh *nh; + if (flow_entry->key.tbl_id != ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING) continue; - ofdpa_port = ofdpa_port_dev_lower_find(flow_entry->fi->fib_dev, - rocker); + nh = fib_info_nh(flow_entry->fi, 0); + ofdpa_port = ofdpa_port_dev_lower_find(nh->fib_nh_dev, rocker); if (!ofdpa_port) continue; - flow_entry->fi->fib_nh->fib_nh_flags &= ~RTNH_F_OFFLOAD; + nh->fib_nh_flags &= ~RTNH_F_OFFLOAD; ofdpa_flow_tbl_del(ofdpa_port, OFDPA_OP_FLAG_REMOVE, flow_entry); } diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h index 70ba0302c8c9..42b1a806f6f5 100644 --- a/include/net/ip_fib.h +++ b/include/net/ip_fib.h @@ -153,7 +153,6 @@ struct fib_info { bool nh_updated; struct rcu_head rcu; struct fib_nh fib_nh[0]; -#define fib_dev fib_nh[0].fib_nh_dev }; @@ -190,11 +189,6 @@ struct fib_result_nl { int err; }; -static inline struct fib_nh_common *fib_info_nhc(struct fib_info *fi, int nhsel) -{ - return &fi->fib_nh[nhsel].nh_common; -} - #ifdef CONFIG_IP_MULTIPLE_TABLES #define FIB_TABLE_HASHSZ 256 #else diff --git a/include/net/nexthop.h b/include/net/nexthop.h index 6e1b8f53624c..e501d77b82c8 100644 --- a/include/net/nexthop.h +++ b/include/net/nexthop.h @@ -192,4 +192,19 @@ static inline bool nexthop_is_blackhole(const struct nexthop *nh) nhi = rcu_dereference_rtnl(nh->nh_info); return nhi->reject_nh; } + +static inline unsigned int fib_info_num_path(const struct fib_info *fi) +{ + return fi->fib_nhs; +} + +static inline struct fib_nh_common *fib_info_nhc(struct fib_info *fi, int nhsel) +{ + return &fi->fib_nh[nhsel].nh_common; +} + +static inline struct fib_nh *fib_info_nh(struct fib_info *fi, int nhsel) +{ + return &fi->fib_nh[nhsel]; +} #endif diff --git a/net/core/filter.c b/net/core/filter.c index 55bfc941d17a..2ae72bbfa6d2 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -66,6 +66,7 @@ #include #include #include +#include #include #include #include @@ -4674,7 +4675,7 @@ static int bpf_ipv4_fib_lookup(struct net *net, struct bpf_fib_lookup *params, if (res.type != RTN_UNICAST) return BPF_FIB_LKUP_RET_NOT_FWDED; - if (res.fi->fib_nhs > 1) + if (fib_info_num_path(res.fi) > 1) fib_select_path(net, &res, &fl4, NULL); if (check_mtu) { diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index c7cdb8d0d164..a4691360b395 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -43,6 +43,7 @@ #include #include #include +#include #include #include #include @@ -234,7 +235,9 @@ static inline unsigned int __inet_dev_addr_type(struct net *net, if (table) { ret = RTN_UNICAST; if (!fib_table_lookup(table, &fl4, &res, FIB_LOOKUP_NOREF)) { - if (!dev || dev == res.fi->fib_dev) + struct fib_nh *nh = fib_info_nh(res.fi, 0); + + if (!dev || dev == nh->fib_nh_dev) ret = res.type; } } @@ -321,8 +324,8 @@ bool fib_info_nh_uses_dev(struct fib_info *fi, const struct net_device *dev) #ifdef CONFIG_IP_ROUTE_MULTIPATH int ret; - for (ret = 0; ret < fi->fib_nhs; ret++) { - struct fib_nh *nh = &fi->fib_nh[ret]; + for (ret = 0; ret < fib_info_num_path(fi); ret++) { + const struct fib_nh *nh = fib_info_nh(fi, ret); if (nh->fib_nh_dev == dev) { dev_match = true; @@ -333,7 +336,7 @@ bool fib_info_nh_uses_dev(struct fib_info *fi, const struct net_device *dev) } } #else - if (fi->fib_nh[0].fib_nh_dev == dev) + if (fib_info_nh(fi, 0)->fib_nh_dev == dev) dev_match = true; #endif diff --git a/net/ipv4/fib_lookup.h b/net/ipv4/fib_lookup.h index 7945f0534db7..a68b5e21ec51 100644 --- a/net/ipv4/fib_lookup.h +++ b/net/ipv4/fib_lookup.h @@ -5,6 +5,7 @@ #include #include #include +#include struct fib_alias { struct hlist_node fa_list; diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c index cfec3af54c8d..ab06fd73b343 100644 --- a/net/ipv4/fib_rules.c +++ b/net/ipv4/fib_rules.c @@ -31,6 +31,7 @@ #include #include #include +#include #include struct fib4_rule { @@ -145,8 +146,11 @@ static bool fib4_rule_suppress(struct fib_rule *rule, struct fib_lookup_arg *arg struct fib_result *result = (struct fib_result *) arg->result; struct net_device *dev = NULL; - if (result->fi) - dev = result->fi->fib_dev; + if (result->fi) { + struct fib_nh *nh = fib_info_nh(result->fi, 0); + + dev = nh->fib_nh_dev; + } /* do not accept result if the route does * not meet the required prefix length diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 78648072783e..a37ff07718a8 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -42,6 +42,7 @@ #include #include #include +#include #include #include #include @@ -65,13 +66,13 @@ static struct hlist_head fib_info_devhash[DEVINDEX_HASHSIZE]; #define for_nexthops(fi) { \ int nhsel; const struct fib_nh *nh; \ for (nhsel = 0, nh = (fi)->fib_nh; \ - nhsel < (fi)->fib_nhs; \ + nhsel < fib_info_num_path((fi)); \ nh++, nhsel++) #define change_nexthops(fi) { \ int nhsel; struct fib_nh *nexthop_nh; \ for (nhsel = 0, nexthop_nh = (struct fib_nh *)((fi)->fib_nh); \ - nhsel < (fi)->fib_nhs; \ + nhsel < fib_info_num_path((fi)); \ nexthop_nh++, nhsel++) #else /* CONFIG_IP_ROUTE_MULTIPATH */ @@ -271,11 +272,13 @@ void fib_release_info(struct fib_info *fi) spin_unlock_bh(&fib_info_lock); } -static inline int nh_comp(const struct fib_info *fi, const struct fib_info *ofi) +static inline int nh_comp(struct fib_info *fi, struct fib_info *ofi) { - const struct fib_nh *onh = ofi->fib_nh; + const struct fib_nh *onh; for_nexthops(fi) { + onh = fib_info_nh(ofi, nhsel); + if (nh->fib_nh_oif != onh->fib_nh_oif || nh->fib_nh_gw_family != onh->fib_nh_gw_family || nh->fib_nh_scope != onh->fib_nh_scope || @@ -296,8 +299,6 @@ static inline int nh_comp(const struct fib_info *fi, const struct fib_info *ofi) if (nh->fib_nh_gw_family == AF_INET6 && ipv6_addr_cmp(&nh->fib_nh_gw6, &onh->fib_nh_gw6)) return -1; - - onh++; } endfor_nexthops(fi); return 0; } @@ -326,7 +327,7 @@ static inline unsigned int fib_info_hashfn(const struct fib_info *fi) return (val ^ (val >> 7) ^ (val >> 12)) & mask; } -static struct fib_info *fib_find_info(const struct fib_info *nfi) +static struct fib_info *fib_find_info(struct fib_info *nfi) { struct hlist_head *head; struct fib_info *fi; @@ -390,13 +391,14 @@ static inline size_t fib_nlmsg_size(struct fib_info *fi) + nla_total_size(4) /* RTA_PRIORITY */ + nla_total_size(4) /* RTA_PREFSRC */ + nla_total_size(TCP_CA_NAME_MAX); /* RTAX_CC_ALGO */ + unsigned int nhs = fib_info_num_path(fi); /* space for nested metrics */ payload += nla_total_size((RTAX_MAX * nla_total_size(4))); - if (fi->fib_nhs) { + if (nhs) { size_t nh_encapsize = 0; - /* Also handles the special case fib_nhs == 1 */ + /* Also handles the special case nhs == 1 */ /* each nexthop is packed in an attribute */ size_t nhsize = nla_total_size(sizeof(struct rtnexthop)); @@ -416,8 +418,7 @@ static inline size_t fib_nlmsg_size(struct fib_info *fi) } endfor_nexthops(fi); /* all nexthops are packed in a nested attribute */ - payload += nla_total_size((fi->fib_nhs * nhsize) + - nh_encapsize); + payload += nla_total_size((nhs * nhsize) + nh_encapsize); } @@ -584,6 +585,7 @@ static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh, { struct net *net = fi->fib_net; struct fib_config fib_cfg; + struct fib_nh *nh; int ret; change_nexthops(fi) { @@ -646,24 +648,25 @@ static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh, } endfor_nexthops(fi); ret = -EINVAL; - if (cfg->fc_oif && fi->fib_nh->fib_nh_oif != cfg->fc_oif) { + nh = fib_info_nh(fi, 0); + if (cfg->fc_oif && nh->fib_nh_oif != cfg->fc_oif) { NL_SET_ERR_MSG(extack, "Nexthop device index does not match RTA_OIF"); goto errout; } if (cfg->fc_gw_family) { - if (cfg->fc_gw_family != fi->fib_nh->fib_nh_gw_family || + if (cfg->fc_gw_family != nh->fib_nh_gw_family || (cfg->fc_gw_family == AF_INET && - fi->fib_nh->fib_nh_gw4 != cfg->fc_gw4) || + nh->fib_nh_gw4 != cfg->fc_gw4) || (cfg->fc_gw_family == AF_INET6 && - ipv6_addr_cmp(&fi->fib_nh->fib_nh_gw6, &cfg->fc_gw6))) { + ipv6_addr_cmp(&nh->fib_nh_gw6, &cfg->fc_gw6))) { NL_SET_ERR_MSG(extack, "Nexthop gateway does not match RTA_GATEWAY or RTA_VIA"); goto errout; } } #ifdef CONFIG_IP_ROUTE_CLASSID - if (cfg->fc_flow && fi->fib_nh->nh_tclassid != cfg->fc_flow) { + if (cfg->fc_flow && nh->nh_tclassid != cfg->fc_flow) { NL_SET_ERR_MSG(extack, "Nexthop class id does not match RTA_FLOW"); goto errout; @@ -679,7 +682,7 @@ static void fib_rebalance(struct fib_info *fi) int total; int w; - if (fi->fib_nhs < 2) + if (fib_info_num_path(fi) < 2) return; total = 0; @@ -761,27 +764,29 @@ int fib_nh_match(struct fib_config *cfg, struct fib_info *fi, return 1; if (cfg->fc_oif || cfg->fc_gw_family) { + struct fib_nh *nh = fib_info_nh(fi, 0); + if (cfg->fc_encap) { if (fib_encap_match(cfg->fc_encap_type, cfg->fc_encap, - fi->fib_nh, cfg, extack)) + nh, cfg, extack)) return 1; } #ifdef CONFIG_IP_ROUTE_CLASSID if (cfg->fc_flow && - cfg->fc_flow != fi->fib_nh->nh_tclassid) + cfg->fc_flow != nh->nh_tclassid) return 1; #endif - if ((cfg->fc_oif && cfg->fc_oif != fi->fib_nh->fib_nh_oif) || + if ((cfg->fc_oif && cfg->fc_oif != nh->fib_nh_oif) || (cfg->fc_gw_family && - cfg->fc_gw_family != fi->fib_nh->fib_nh_gw_family)) + cfg->fc_gw_family != nh->fib_nh_gw_family)) return 1; if (cfg->fc_gw_family == AF_INET && - cfg->fc_gw4 != fi->fib_nh->fib_nh_gw4) + cfg->fc_gw4 != nh->fib_nh_gw4) return 1; if (cfg->fc_gw_family == AF_INET6 && - ipv6_addr_cmp(&cfg->fc_gw6, &fi->fib_nh->fib_nh_gw6)) + ipv6_addr_cmp(&cfg->fc_gw6, &nh->fib_nh_gw6)) return 1; return 0; @@ -1366,7 +1371,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg, goto err_inval; } nh->fib_nh_scope = RT_SCOPE_NOWHERE; - nh->fib_nh_dev = dev_get_by_index(net, fi->fib_nh->fib_nh_oif); + nh->fib_nh_dev = dev_get_by_index(net, nh->fib_nh_oif); err = -ENODEV; if (!nh->fib_nh_dev) goto failure; @@ -1583,6 +1588,7 @@ int fib_dump_info(struct sk_buff *skb, u32 portid, u32 seq, int event, u32 tb_id, u8 type, __be32 dst, int dst_len, u8 tos, struct fib_info *fi, unsigned int flags) { + unsigned int nhs = fib_info_num_path(fi); struct nlmsghdr *nlh; struct rtmsg *rtm; @@ -1618,8 +1624,8 @@ int fib_dump_info(struct sk_buff *skb, u32 portid, u32 seq, int event, if (fi->fib_prefsrc && nla_put_in_addr(skb, RTA_PREFSRC, fi->fib_prefsrc)) goto nla_put_failure; - if (fi->fib_nhs == 1) { - struct fib_nh *nh = &fi->fib_nh[0]; + if (nhs == 1) { + const struct fib_nh *nh = fib_info_nh(fi, 0); unsigned char flags = 0; if (fib_nexthop_info(skb, &nh->nh_common, &flags, false) < 0) @@ -1838,6 +1844,7 @@ static void fib_select_default(const struct flowi4 *flp, struct fib_result *res) hlist_for_each_entry_rcu(fa, fa_head, fa_list) { struct fib_info *next_fi = fa->fa_info; + struct fib_nh *nh; if (fa->fa_slen != slen) continue; @@ -1859,8 +1866,9 @@ static void fib_select_default(const struct flowi4 *flp, struct fib_result *res) if (next_fi->fib_scope != res->scope || fa->fa_type != RTN_UNICAST) continue; - if (!next_fi->fib_nh[0].fib_nh_gw4 || - next_fi->fib_nh[0].fib_nh_scope != RT_SCOPE_LINK) + + nh = fib_info_nh(next_fi, 0); + if (!nh->fib_nh_gw4 || nh->fib_nh_scope != RT_SCOPE_LINK) continue; fib_alias_accessed(fa); @@ -2024,7 +2032,7 @@ void fib_select_path(struct net *net, struct fib_result *res, goto check_saddr; #ifdef CONFIG_IP_ROUTE_MULTIPATH - if (res->fi->fib_nhs > 1) { + if (fib_info_num_path(res->fi) > 1) { int h = fib_multipath_hash(net, fl4, skb, NULL); fib_select_multipath(res, h); diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index b53ecef89d59..5c8a4d21b8e0 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1469,7 +1469,7 @@ int fib_table_lookup(struct fib_table *tb, const struct flowi4 *flp, } if (fi->fib_flags & RTNH_F_DEAD) continue; - for (nhsel = 0; nhsel < fi->fib_nhs; nhsel++) { + for (nhsel = 0; nhsel < fib_info_num_path(fi); nhsel++) { struct fib_nh_common *nhc = fib_info_nhc(fi, nhsel); if (nhc->nhc_flags & RTNH_F_DEAD) @@ -2717,14 +2717,18 @@ static void fib_route_seq_stop(struct seq_file *seq, void *v) rcu_read_unlock(); } -static unsigned int fib_flag_trans(int type, __be32 mask, const struct fib_info *fi) +static unsigned int fib_flag_trans(int type, __be32 mask, struct fib_info *fi) { unsigned int flags = 0; if (type == RTN_UNREACHABLE || type == RTN_PROHIBIT) flags = RTF_REJECT; - if (fi && fi->fib_nh->fib_nh_gw4) - flags |= RTF_GATEWAY; + if (fi) { + const struct fib_nh *nh = fib_info_nh(fi, 0); + + if (nh->fib_nh_gw4) + flags |= RTF_GATEWAY; + } if (mask == htonl(0xFFFFFFFF)) flags |= RTF_HOST; flags |= RTF_UP; @@ -2755,7 +2759,7 @@ static int fib_route_seq_show(struct seq_file *seq, void *v) prefix = htonl(l->key); hlist_for_each_entry_rcu(fa, &l->leaf, fa_list) { - const struct fib_info *fi = fa->fa_info; + struct fib_info *fi = fa->fa_info; __be32 mask = inet_make_mask(KEYLENGTH - fa->fa_slen); unsigned int flags = fib_flag_trans(fa->fa_type, mask, fi); @@ -2768,26 +2772,28 @@ static int fib_route_seq_show(struct seq_file *seq, void *v) seq_setwidth(seq, 127); - if (fi) + if (fi) { + struct fib_nh *nh = fib_info_nh(fi, 0); + seq_printf(seq, "%s\t%08X\t%08X\t%04X\t%d\t%u\t" "%d\t%08X\t%d\t%u\t%u", - fi->fib_dev ? fi->fib_dev->name : "*", + nh->fib_nh_dev ? nh->fib_nh_dev->name : "*", prefix, - fi->fib_nh->fib_nh_gw4, flags, 0, 0, + nh->fib_nh_gw4, flags, 0, 0, fi->fib_priority, mask, (fi->fib_advmss ? fi->fib_advmss + 40 : 0), fi->fib_window, fi->fib_rtt >> 3); - else + } else { seq_printf(seq, "*\t%08X\t%08X\t%04X\t%d\t%u\t" "%d\t%08X\t%d\t%u\t%u", prefix, 0, flags, 0, 0, 0, mask, 0, 0, 0); - + } seq_pad(seq, '\n'); } diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 11ddc276776e..05a6a8ecb574 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -99,6 +99,7 @@ #include #include #include +#include #include #include #include @@ -1950,7 +1951,7 @@ static int ip_mkroute_input(struct sk_buff *skb, struct flow_keys *hkeys) { #ifdef CONFIG_IP_ROUTE_MULTIPATH - if (res->fi && res->fi->fib_nhs > 1) { + if (res->fi && fib_info_num_path(res->fi) > 1) { int h = fib_multipath_hash(res->fi->fib_net, NULL, skb, hkeys); fib_select_multipath(res, h);