diff options
Diffstat (limited to 'net/decnet')
| -rw-r--r-- | net/decnet/Kconfig | 8 | ||||
| -rw-r--r-- | net/decnet/dn_dev.c | 173 | ||||
| -rw-r--r-- | net/decnet/dn_neigh.c | 1 | ||||
| -rw-r--r-- | net/decnet/dn_nsp_in.c | 2 | ||||
| -rw-r--r-- | net/decnet/dn_route.c | 46 | ||||
| -rw-r--r-- | net/decnet/dn_rules.c | 43 | ||||
| -rw-r--r-- | net/decnet/dn_table.c | 42 |
7 files changed, 150 insertions, 165 deletions
diff --git a/net/decnet/Kconfig b/net/decnet/Kconfig index 36e72cb145b..7914fd619c5 100644 --- a/net/decnet/Kconfig +++ b/net/decnet/Kconfig @@ -41,11 +41,3 @@ config DECNET_ROUTER See <file:Documentation/networking/decnet.txt> for more information. -config DECNET_ROUTE_FWMARK - bool "DECnet: use FWMARK value as routing key (EXPERIMENTAL)" - depends on DECNET_ROUTER && NETFILTER - help - If you say Y here, you will be able to specify different routes for - packets with different FWMARK ("firewalling mark") values - (see ipchains(8), "-m" argument). - diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c index 01861feb608..0b9d4c95515 100644 --- a/net/decnet/dn_dev.c +++ b/net/decnet/dn_dev.c @@ -38,7 +38,6 @@ #include <linux/if_arp.h> #include <linux/if_ether.h> #include <linux/skbuff.h> -#include <linux/rtnetlink.h> #include <linux/sysctl.h> #include <linux/notifier.h> #include <asm/uaccess.h> @@ -47,6 +46,7 @@ #include <net/dst.h> #include <net/flow.h> #include <net/fib_rules.h> +#include <net/netlink.h> #include <net/dn.h> #include <net/dn_dev.h> #include <net/dn_route.h> @@ -73,7 +73,7 @@ static BLOCKING_NOTIFIER_HEAD(dnaddr_chain); static struct dn_dev *dn_dev_create(struct net_device *dev, int *err); static void dn_dev_delete(struct net_device *dev); -static void rtmsg_ifa(int event, struct dn_ifaddr *ifa); +static void dn_ifaddr_notify(int event, struct dn_ifaddr *ifa); static int dn_eth_up(struct net_device *); static void dn_eth_down(struct net_device *); @@ -255,12 +255,10 @@ static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms * struct dn_dev_sysctl_table *t; int i; - t = kmalloc(sizeof(*t), GFP_KERNEL); + t = kmemdup(&dn_dev_sysctl, sizeof(*t), GFP_KERNEL); if (t == NULL) return; - memcpy(t, &dn_dev_sysctl, sizeof(*t)); - for(i = 0; i < ARRAY_SIZE(t->dn_dev_vars) - 1; i++) { long offset = (long)t->dn_dev_vars[i].data; t->dn_dev_vars[i].data = ((char *)parms) + offset; @@ -442,7 +440,7 @@ static void dn_dev_del_ifa(struct dn_dev *dn_db, struct dn_ifaddr **ifap, int de } } - rtmsg_ifa(RTM_DELADDR, ifa1); + dn_ifaddr_notify(RTM_DELADDR, ifa1); blocking_notifier_call_chain(&dnaddr_chain, NETDEV_DOWN, ifa1); if (destroy) { dn_dev_free_ifa(ifa1); @@ -477,7 +475,7 @@ static int dn_dev_insert_ifa(struct dn_dev *dn_db, struct dn_ifaddr *ifa) ifa->ifa_next = dn_db->ifa_list; dn_db->ifa_list = ifa; - rtmsg_ifa(RTM_NEWADDR, ifa); + dn_ifaddr_notify(RTM_NEWADDR, ifa); blocking_notifier_call_chain(&dnaddr_chain, NETDEV_UP, ifa); return 0; @@ -647,41 +645,62 @@ static struct dn_dev *dn_dev_by_index(int ifindex) return dn_dev; } -static int dn_dev_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) +static struct nla_policy dn_ifa_policy[IFA_MAX+1] __read_mostly = { + [IFA_ADDRESS] = { .type = NLA_U16 }, + [IFA_LOCAL] = { .type = NLA_U16 }, + [IFA_LABEL] = { .type = NLA_STRING, + .len = IFNAMSIZ - 1 }, +}; + +static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { - struct rtattr **rta = arg; + struct nlattr *tb[IFA_MAX+1]; struct dn_dev *dn_db; - struct ifaddrmsg *ifm = NLMSG_DATA(nlh); + struct ifaddrmsg *ifm; struct dn_ifaddr *ifa, **ifap; + int err = -EADDRNOTAVAIL; + + err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy); + if (err < 0) + goto errout; + ifm = nlmsg_data(nlh); if ((dn_db = dn_dev_by_index(ifm->ifa_index)) == NULL) - return -EADDRNOTAVAIL; + goto errout; + + for (ifap = &dn_db->ifa_list; (ifa = *ifap); ifap = &ifa->ifa_next) { + if (tb[IFA_LOCAL] && + nla_memcmp(tb[IFA_LOCAL], &ifa->ifa_local, 2)) + continue; - for(ifap = &dn_db->ifa_list; (ifa=*ifap) != NULL; ifap = &ifa->ifa_next) { - void *tmp = rta[IFA_LOCAL-1]; - if ((tmp && memcmp(RTA_DATA(tmp), &ifa->ifa_local, 2)) || - (rta[IFA_LABEL-1] && rtattr_strcmp(rta[IFA_LABEL-1], ifa->ifa_label))) + if (tb[IFA_LABEL] && nla_strcmp(tb[IFA_LABEL], ifa->ifa_label)) continue; dn_dev_del_ifa(dn_db, ifap, 1); return 0; } - return -EADDRNOTAVAIL; +errout: + return err; } -static int dn_dev_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) +static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) { - struct rtattr **rta = arg; + struct nlattr *tb[IFA_MAX+1]; struct net_device *dev; struct dn_dev *dn_db; - struct ifaddrmsg *ifm = NLMSG_DATA(nlh); + struct ifaddrmsg *ifm; struct dn_ifaddr *ifa; - int rv; + int err; - if (rta[IFA_LOCAL-1] == NULL) + err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy); + if (err < 0) + return err; + + if (tb[IFA_LOCAL] == NULL) return -EINVAL; + ifm = nlmsg_data(nlh); if ((dev = __dev_get_by_index(ifm->ifa_index)) == NULL) return -ENODEV; @@ -695,69 +714,77 @@ static int dn_dev_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *a if ((ifa = dn_dev_alloc_ifa()) == NULL) return -ENOBUFS; - if (!rta[IFA_ADDRESS - 1]) - rta[IFA_ADDRESS - 1] = rta[IFA_LOCAL - 1]; - memcpy(&ifa->ifa_local, RTA_DATA(rta[IFA_LOCAL-1]), 2); - memcpy(&ifa->ifa_address, RTA_DATA(rta[IFA_ADDRESS-1]), 2); + if (tb[IFA_ADDRESS] == NULL) + tb[IFA_ADDRESS] = tb[IFA_LOCAL]; + + ifa->ifa_local = nla_get_le16(tb[IFA_LOCAL]); + ifa->ifa_address = nla_get_le16(tb[IFA_ADDRESS]); ifa->ifa_flags = ifm->ifa_flags; ifa->ifa_scope = ifm->ifa_scope; ifa->ifa_dev = dn_db; - if (rta[IFA_LABEL-1]) - rtattr_strlcpy(ifa->ifa_label, rta[IFA_LABEL-1], IFNAMSIZ); + + if (tb[IFA_LABEL]) + nla_strlcpy(ifa->ifa_label, tb[IFA_LABEL], IFNAMSIZ); else memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); - rv = dn_dev_insert_ifa(dn_db, ifa); - if (rv) + err = dn_dev_insert_ifa(dn_db, ifa); + if (err) dn_dev_free_ifa(ifa); - return rv; + + return err; } -static int dn_dev_fill_ifaddr(struct sk_buff *skb, struct dn_ifaddr *ifa, - u32 pid, u32 seq, int event, unsigned int flags) +static inline size_t dn_ifaddr_nlmsg_size(void) +{ + return NLMSG_ALIGN(sizeof(struct ifaddrmsg)) + + nla_total_size(IFNAMSIZ) /* IFA_LABEL */ + + nla_total_size(2) /* IFA_ADDRESS */ + + nla_total_size(2); /* IFA_LOCAL */ +} + +static int dn_nl_fill_ifaddr(struct sk_buff *skb, struct dn_ifaddr *ifa, + u32 pid, u32 seq, int event, unsigned int flags) { struct ifaddrmsg *ifm; struct nlmsghdr *nlh; - unsigned char *b = skb->tail; - nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*ifm), flags); - ifm = NLMSG_DATA(nlh); + nlh = nlmsg_put(skb, pid, seq, event, sizeof(*ifm), flags); + if (nlh == NULL) + return -ENOBUFS; + ifm = nlmsg_data(nlh); ifm->ifa_family = AF_DECnet; ifm->ifa_prefixlen = 16; ifm->ifa_flags = ifa->ifa_flags | IFA_F_PERMANENT; ifm->ifa_scope = ifa->ifa_scope; ifm->ifa_index = ifa->ifa_dev->dev->ifindex; + if (ifa->ifa_address) - RTA_PUT(skb, IFA_ADDRESS, 2, &ifa->ifa_address); + NLA_PUT_LE16(skb, IFA_ADDRESS, ifa->ifa_address); if (ifa->ifa_local) - RTA_PUT(skb, IFA_LOCAL, 2, &ifa->ifa_local); + NLA_PUT_LE16(skb, IFA_LOCAL, ifa->ifa_local); if (ifa->ifa_label[0]) - RTA_PUT(skb, IFA_LABEL, IFNAMSIZ, &ifa->ifa_label); - nlh->nlmsg_len = skb->tail - b; - return skb->len; + NLA_PUT_STRING(skb, IFA_LABEL, ifa->ifa_label); + + return nlmsg_end(skb, nlh); -nlmsg_failure: -rtattr_failure: - skb_trim(skb, b - skb->data); - return -1; +nla_put_failure: + return nlmsg_cancel(skb, nlh); } -static void rtmsg_ifa(int event, struct dn_ifaddr *ifa) +static void dn_ifaddr_notify(int event, struct dn_ifaddr *ifa) { struct sk_buff *skb; - int payload = sizeof(struct ifaddrmsg) + 128; int err = -ENOBUFS; - skb = alloc_skb(nlmsg_total_size(payload), GFP_KERNEL); + skb = alloc_skb(dn_ifaddr_nlmsg_size(), GFP_KERNEL); if (skb == NULL) goto errout; - err = dn_dev_fill_ifaddr(skb, ifa, 0, 0, event, 0); - if (err < 0) { - kfree_skb(skb); - goto errout; - } + err = dn_nl_fill_ifaddr(skb, ifa, 0, 0, event, 0); + /* failure implies BUG in dn_ifaddr_nlmsg_size() */ + BUG_ON(err < 0); err = rtnl_notify(skb, 0, RTNLGRP_DECnet_IFADDR, NULL, GFP_KERNEL); errout: @@ -765,39 +792,43 @@ errout: rtnl_set_sk_err(RTNLGRP_DECnet_IFADDR, err); } -static int dn_dev_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb) +static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb) { - int idx, dn_idx; - int s_idx, s_dn_idx; + int idx, dn_idx = 0, skip_ndevs, skip_naddr; struct net_device *dev; struct dn_dev *dn_db; struct dn_ifaddr *ifa; - s_idx = cb->args[0]; - s_dn_idx = dn_idx = cb->args[1]; + skip_ndevs = cb->args[0]; + skip_naddr = cb->args[1]; + read_lock(&dev_base_lock); - for(dev = dev_base, idx = 0; dev; dev = dev->next, idx++) { - if (idx < s_idx) + for (dev = dev_base, idx = 0; dev; dev = dev->next, idx++) { + if (idx < skip_ndevs) continue; - if (idx > s_idx) - s_dn_idx = 0; + else if (idx > skip_ndevs) { + /* Only skip over addresses for first dev dumped + * in this iteration (idx == skip_ndevs) */ + skip_naddr = 0; + } + if ((dn_db = dev->dn_ptr) == NULL) continue; - for(ifa = dn_db->ifa_list, dn_idx = 0; ifa; ifa = ifa->ifa_next, dn_idx++) { - if (dn_idx < s_dn_idx) + for (ifa = dn_db->ifa_list, dn_idx = 0; ifa; + ifa = ifa->ifa_next, dn_idx++) { + if (dn_idx < skip_naddr) continue; - if (dn_dev_fill_ifaddr(skb, ifa, - NETLINK_CB(cb->skb).pid, - cb->nlh->nlmsg_seq, - RTM_NEWADDR, - NLM_F_MULTI) <= 0) + if (dn_nl_fill_ifaddr(skb, ifa, NETLINK_CB(cb->skb).pid, + cb->nlh->nlmsg_seq, RTM_NEWADDR, + NLM_F_MULTI) < 0) goto done; } } done: read_unlock(&dev_base_lock); + cb->args[0] = idx; cb->args[1] = dn_idx; @@ -1414,9 +1445,9 @@ static struct file_operations dn_dev_seq_fops = { static struct rtnetlink_link dnet_rtnetlink_table[RTM_NR_MSGTYPES] = { - [RTM_NEWADDR - RTM_BASE] = { .doit = dn_dev_rtm_newaddr, }, - [RTM_DELADDR - RTM_BASE] = { .doit = dn_dev_rtm_deladdr, }, - [RTM_GETADDR - RTM_BASE] = { .dumpit = dn_dev_dump_ifaddr, }, + [RTM_NEWADDR - RTM_BASE] = { .doit = dn_nl_newaddr, }, + [RTM_DELADDR - RTM_BASE] = { .doit = dn_nl_deladdr, }, + [RTM_GETADDR - RTM_BASE] = { .dumpit = dn_nl_dump_ifaddr, }, #ifdef CONFIG_DECNET_ROUTER [RTM_NEWROUTE - RTM_BASE] = { .doit = dn_fib_rtm_newroute, }, [RTM_DELROUTE - RTM_BASE] = { .doit = dn_fib_rtm_delroute, }, diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c index ff0ebe99137..7322bb36e82 100644 --- a/net/decnet/dn_neigh.c +++ b/net/decnet/dn_neigh.c @@ -591,7 +591,6 @@ static int dn_neigh_seq_open(struct inode *inode, struct file *file) seq = file->private_data; seq->private = s; - memset(s, 0, sizeof(*s)); out: return rc; out_kfree: diff --git a/net/decnet/dn_nsp_in.c b/net/decnet/dn_nsp_in.c index 7683d4f754d..39a6cf7fb56 100644 --- a/net/decnet/dn_nsp_in.c +++ b/net/decnet/dn_nsp_in.c @@ -804,7 +804,7 @@ got_it: goto free_out; } - return sk_receive_skb(sk, skb); + return sk_receive_skb(sk, skb, 0); } return dn_nsp_no_socket(skb, reason); diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c index 23489f7232d..9881933167b 100644 --- a/net/decnet/dn_route.c +++ b/net/decnet/dn_route.c @@ -269,9 +269,7 @@ static inline int compare_keys(struct flowi *fl1, struct flowi *fl2) { return ((fl1->nl_u.dn_u.daddr ^ fl2->nl_u.dn_u.daddr) | (fl1->nl_u.dn_u.saddr ^ fl2->nl_u.dn_u.saddr) | -#ifdef CONFIG_DECNET_ROUTE_FWMARK - (fl1->nl_u.dn_u.fwmark ^ fl2->nl_u.dn_u.fwmark) | -#endif + (fl1->mark ^ fl2->mark) | (fl1->nl_u.dn_u.scope ^ fl2->nl_u.dn_u.scope) | (fl1->oif ^ fl2->oif) | (fl1->iif ^ fl2->iif)) == 0; @@ -882,10 +880,8 @@ static int dn_route_output_slow(struct dst_entry **pprt, const struct flowi *old { .daddr = oldflp->fld_dst, .saddr = oldflp->fld_src, .scope = RT_SCOPE_UNIVERSE, -#ifdef CONFIG_DECNET_ROUTE_FWMARK - .fwmark = oldflp->fld_fwmark -#endif } }, + .mark = oldflp->mark, .iif = loopback_dev.ifindex, .oif = oldflp->oif }; struct dn_route *rt = NULL; @@ -903,7 +899,7 @@ static int dn_route_output_slow(struct dst_entry **pprt, const struct flowi *old "dn_route_output_slow: dst=%04x src=%04x mark=%d" " iif=%d oif=%d\n", dn_ntohs(oldflp->fld_dst), dn_ntohs(oldflp->fld_src), - oldflp->fld_fwmark, loopback_dev.ifindex, oldflp->oif); + oldflp->mark, loopback_dev.ifindex, oldflp->oif); /* If we have an output interface, verify its a DECnet device */ if (oldflp->oif) { @@ -1108,9 +1104,7 @@ make_route: rt->fl.fld_dst = oldflp->fld_dst; rt->fl.oif = oldflp->oif; rt->fl.iif = 0; -#ifdef CONFIG_DECNET_ROUTE_FWMARK - rt->fl.fld_fwmark = oldflp->fld_fwmark; -#endif + rt->fl.mark = oldflp->mark; rt->rt_saddr = fl.fld_src; rt->rt_daddr = fl.fld_dst; @@ -1178,9 +1172,7 @@ static int __dn_route_output_key(struct dst_entry **pprt, const struct flowi *fl rt = rcu_dereference(rt->u.rt_next)) { if ((flp->fld_dst == rt->fl.fld_dst) && (flp->fld_src == rt->fl.fld_src) && -#ifdef CONFIG_DECNET_ROUTE_FWMARK - (flp->fld_fwmark == rt->fl.fld_fwmark) && -#endif + (flp->mark == rt->fl.mark) && (rt->fl.iif == 0) && (rt->fl.oif == flp->oif)) { rt->u.dst.lastuse = jiffies; @@ -1235,10 +1227,8 @@ static int dn_route_input_slow(struct sk_buff *skb) { .daddr = cb->dst, .saddr = cb->src, .scope = RT_SCOPE_UNIVERSE, -#ifdef CONFIG_DECNET_ROUTE_FWMARK - .fwmark = skb->nfmark -#endif } }, + .mark = skb->mark, .iif = skb->dev->ifindex }; struct dn_fib_res res = { .fi = NULL, .type = RTN_UNREACHABLE }; int err = -EINVAL; @@ -1385,7 +1375,7 @@ make_route: rt->fl.fld_dst = cb->dst; rt->fl.oif = 0; rt->fl.iif = in_dev->ifindex; - rt->fl.fld_fwmark = fl.fld_fwmark; + rt->fl.mark = fl.mark; rt->u.dst.flags = DST_HOST; rt->u.dst.neighbour = neigh; @@ -1457,9 +1447,7 @@ int dn_route_input(struct sk_buff *skb) if ((rt->fl.fld_src == cb->src) && (rt->fl.fld_dst == cb->dst) && (rt->fl.oif == 0) && -#ifdef CONFIG_DECNET_ROUTE_FWMARK - (rt->fl.fld_fwmark == skb->nfmark) && -#endif + (rt->fl.mark == skb->mark) && (rt->fl.iif == cb->iif)) { rt->u.dst.lastuse = jiffies; dst_hold(&rt->u.dst); @@ -1481,7 +1469,7 @@ static int dn_rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq, struct rtmsg *r; struct nlmsghdr *nlh; unsigned char *b = skb->tail; - struct rta_cacheinfo ci; + long expires; nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*r), flags); r = NLMSG_DATA(nlh); @@ -1514,16 +1502,10 @@ static int dn_rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq, RTA_PUT(skb, RTA_GATEWAY, 2, &rt->rt_gateway); if (rtnetlink_put_metrics(skb, rt->u.dst.metrics) < 0) goto rtattr_failure; - ci.rta_lastuse = jiffies_to_clock_t(jiffies - rt->u.dst.lastuse); - ci.rta_used = rt->u.dst.__use; - ci.rta_clntref = atomic_read(&rt->u.dst.__refcnt); - if (rt->u.dst.expires) - ci.rta_expires = jiffies_to_clock_t(rt->u.dst.expires - jiffies); - else - ci.rta_expires = 0; - ci.rta_error = rt->u.dst.error; - ci.rta_id = ci.rta_ts = ci.rta_tsage = 0; - RTA_PUT(skb, RTA_CACHEINFO, sizeof(ci), &ci); + expires = rt->u.dst.expires ? rt->u.dst.expires - jiffies : 0; + if (rtnl_put_cacheinfo(skb, &rt->u.dst, 0, 0, 0, expires, + rt->u.dst.error) < 0) + goto rtattr_failure; if (rt->fl.iif) RTA_PUT(skb, RTA_IIF, sizeof(int), &rt->fl.iif); @@ -1604,8 +1586,6 @@ int dn_cache_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, void *arg) if (rtm->rtm_flags & RTM_F_NOTIFY) rt->rt_flags |= RTCF_NOTIFY; - NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid; - err = dn_rt_fill_info(skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq, RTM_NEWROUTE, 0, 0); if (err == 0) diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c index 590e0a72495..e32d0c3d5a9 100644 --- a/net/decnet/dn_rules.c +++ b/net/decnet/dn_rules.c @@ -45,10 +45,6 @@ struct dn_fib_rule __le16 dstmask; __le16 srcmap; u8 flags; -#ifdef CONFIG_DECNET_ROUTE_FWMARK - u32 fwmark; - u32 fwmask; -#endif }; static struct dn_fib_rule default_rule = { @@ -112,13 +108,9 @@ errout: } static struct nla_policy dn_fib_rule_policy[FRA_MAX+1] __read_mostly = { - [FRA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, - [FRA_PRIORITY] = { .type = NLA_U32 }, + FRA_GENERIC_POLICY, [FRA_SRC] = { .type = NLA_U16 }, [FRA_DST] = { .type = NLA_U16 }, - [FRA_FWMARK] = { .type = NLA_U32 }, - [FRA_FWMASK] = { .type = NLA_U32 }, - [FRA_TABLE] = { .type = NLA_U32 }, }; static int dn_fib_rule_match(struct fib_rule *rule, struct flowi *fl, int flags) @@ -131,11 +123,6 @@ static int dn_fib_rule_match(struct fib_rule *rule, struct flowi *fl, int flags) ((daddr ^ r->dst) & r->dstmask)) return 0; -#ifdef CONFIG_DECNET_ROUTE_FWMARK - if ((r->fwmark ^ fl->fld_fwmark) & r->fwmask) - return 0; -#endif - return 1; } @@ -169,20 +156,6 @@ static int dn_fib_rule_configure(struct fib_rule *rule, struct sk_buff *skb, if (tb[FRA_DST]) r->dst = nla_get_u16(tb[FRA_DST]); -#ifdef CONFIG_DECNET_ROUTE_FWMARK - if (tb[FRA_FWMARK]) { - r->fwmark = nla_get_u32(tb[FRA_FWMARK]); - if (r->fwmark) - /* compatibility: if the mark value is non-zero all bits - * are compared unless a mask is explicitly specified. - */ - r->fwmask = 0xFFFFFFFF; - } - - if (tb[FRA_FWMASK]) - r->fwmask = nla_get_u32(tb[FRA_FWMASK]); -#endif - r->src_len = frh->src_len; r->srcmask = dnet_make_mask(r->src_len); r->dst_len = frh->dst_len; @@ -203,14 +176,6 @@ static int dn_fib_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh, if (frh->dst_len && (r->dst_len != frh->dst_len)) return 0; -#ifdef CONFIG_DECNET_ROUTE_FWMARK - if (tb[FRA_FWMARK] && (r->fwmark != nla_get_u32(tb[FRA_FWMARK]))) - return 0; - - if (tb[FRA_FWMASK] && (r->fwmask != nla_get_u32(tb[FRA_FWMASK]))) - return 0; -#endif - if (tb[FRA_SRC] && (r->src != nla_get_u16(tb[FRA_SRC]))) return 0; @@ -248,12 +213,6 @@ static int dn_fib_rule_fill(struct fib_rule *rule, struct sk_buff *skb, frh->src_len = r->src_len; frh->tos = 0; -#ifdef CONFIG_DECNET_ROUTE_FWMARK - if (r->fwmark) - NLA_PUT_U32(skb, FRA_FWMARK, r->fwmark); - if (r->fwmask || r->fwmark) - NLA_PUT_U32(skb, FRA_FWMASK, r->fwmask); -#endif if (r->dst_len) NLA_PUT_U16(skb, FRA_DST, r->dst); if (r->src_len) diff --git a/net/decnet/dn_table.c b/net/decnet/dn_table.c index 317904bb589..bdbc3f43166 100644 --- a/net/decnet/dn_table.c +++ b/net/decnet/dn_table.c @@ -263,6 +263,32 @@ static int dn_fib_nh_match(struct rtmsg *r, struct nlmsghdr *nlh, struct dn_kern return 0; } +static inline size_t dn_fib_nlmsg_size(struct dn_fib_info *fi) +{ + size_t payload = NLMSG_ALIGN(sizeof(struct rtmsg)) + + nla_total_size(4) /* RTA_TABLE */ + + nla_total_size(2) /* RTA_DST */ + + nla_total_size(4); /* RTA_PRIORITY */ + + /* space for nested metrics */ + payload += nla_total_size((RTAX_MAX * nla_total_size(4))); + + if (fi->fib_nhs) { + /* Also handles the special case fib_nhs == 1 */ + + /* each nexthop is packed in an attribute */ + size_t nhsize = nla_total_size(sizeof(struct rtnexthop)); + + /* may contain a gateway attribute */ + nhsize += nla_total_size(4); + + /* all nexthops are packed in a nested attribute */ + payload += nla_total_size(fi->fib_nhs * nhsize); + } + + return payload; +} + static int dn_fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, u32 tb_id, u8 type, u8 scope, void *dst, int dst_len, struct dn_fib_info *fi, unsigned int flags) @@ -335,17 +361,15 @@ static void dn_rtmsg_fib(int event, struct dn_fib_node *f, int z, u32 tb_id, u32 pid = req ? req->pid : 0; int err = -ENOBUFS; - skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + skb = nlmsg_new(dn_fib_nlmsg_size(DN_FIB_INFO(f)), GFP_KERNEL); if (skb == NULL) goto errout; err = dn_fib_dump_info(skb, pid, nlh->nlmsg_seq, event, tb_id, f->fn_type, f->fn_scope, &f->fn_key, z, DN_FIB_INFO(f), 0); - if (err < 0) { - kfree_skb(skb); - goto errout; - } + /* failure implies BUG in dn_fib_nlmsg_size() */ + BUG_ON(err < 0); err = rtnl_notify(skb, pid, RTNLGRP_DECnet_ROUTE, nlh, GFP_KERNEL); errout: @@ -807,10 +831,11 @@ struct dn_fib_table *dn_fib_get_table(u32 n, int create) printk(KERN_DEBUG "DECnet: BUG! Attempt to create routing table from interrupt\n"); return NULL; } - if ((t = kmalloc(sizeof(struct dn_fib_table) + sizeof(struct dn_hash), GFP_KERNEL)) == NULL) - return NULL; - memset(t, 0, sizeof(struct dn_fib_table)); + t = kzalloc(sizeof(struct dn_fib_table) + sizeof(struct dn_hash), + GFP_KERNEL); + if (t == NULL) + return NULL; t->n = n; t->insert = dn_fib_table_insert; @@ -818,7 +843,6 @@ struct dn_fib_table *dn_fib_get_table(u32 n, int create) t->lookup = dn_fib_table_lookup; t->flush = dn_fib_table_flush; t->dump = dn_fib_table_dump; - memset(t->data, 0, sizeof(struct dn_hash)); hlist_add_head_rcu(&t->hlist, &dn_fib_table_hash[h]); return t; |