| /* |
| * Copyright (c) 2014, Ericsson AB |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the names of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "core.h" |
| #include "bearer.h" |
| #include "link.h" |
| #include "name_table.h" |
| #include "socket.h" |
| #include "node.h" |
| #include "net.h" |
| #include <net/genetlink.h> |
| #include <linux/tipc_config.h> |
| |
| /* The legacy API had an artificial message length limit called |
| * ULTRA_STRING_MAX_LEN. |
| */ |
| #define ULTRA_STRING_MAX_LEN 32768 |
| |
| #define TIPC_SKB_MAX TLV_SPACE(ULTRA_STRING_MAX_LEN) |
| |
| #define REPLY_TRUNCATED "<truncated>\n" |
| |
| struct tipc_nl_compat_msg { |
| u16 cmd; |
| int rep_type; |
| int rep_size; |
| int req_type; |
| int req_size; |
| struct net *net; |
| struct sk_buff *rep; |
| struct tlv_desc *req; |
| struct sock *dst_sk; |
| }; |
| |
| struct tipc_nl_compat_cmd_dump { |
| int (*header)(struct tipc_nl_compat_msg *); |
| int (*dumpit)(struct sk_buff *, struct netlink_callback *); |
| int (*format)(struct tipc_nl_compat_msg *msg, struct nlattr **attrs); |
| }; |
| |
| struct tipc_nl_compat_cmd_doit { |
| int (*doit)(struct sk_buff *skb, struct genl_info *info); |
| int (*transcode)(struct tipc_nl_compat_cmd_doit *cmd, |
| struct sk_buff *skb, struct tipc_nl_compat_msg *msg); |
| }; |
| |
| static int tipc_skb_tailroom(struct sk_buff *skb) |
| { |
| int tailroom; |
| int limit; |
| |
| tailroom = skb_tailroom(skb); |
| limit = TIPC_SKB_MAX - skb->len; |
| |
| if (tailroom < limit) |
| return tailroom; |
| |
| return limit; |
| } |
| |
| static inline int TLV_GET_DATA_LEN(struct tlv_desc *tlv) |
| { |
| return TLV_GET_LEN(tlv) - TLV_SPACE(0); |
| } |
| |
| static int tipc_add_tlv(struct sk_buff *skb, u16 type, void *data, u16 len) |
| { |
| struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(skb); |
| |
| if (tipc_skb_tailroom(skb) < TLV_SPACE(len)) |
| return -EMSGSIZE; |
| |
| skb_put(skb, TLV_SPACE(len)); |
| tlv->tlv_type = htons(type); |
| tlv->tlv_len = htons(TLV_LENGTH(len)); |
| if (len && data) |
| memcpy(TLV_DATA(tlv), data, len); |
| |
| return 0; |
| } |
| |
| static void tipc_tlv_init(struct sk_buff *skb, u16 type) |
| { |
| struct tlv_desc *tlv = (struct tlv_desc *)skb->data; |
| |
| TLV_SET_LEN(tlv, 0); |
| TLV_SET_TYPE(tlv, type); |
| skb_put(skb, sizeof(struct tlv_desc)); |
| } |
| |
| static int tipc_tlv_sprintf(struct sk_buff *skb, const char *fmt, ...) |
| { |
| int n; |
| u16 len; |
| u32 rem; |
| char *buf; |
| struct tlv_desc *tlv; |
| va_list args; |
| |
| rem = tipc_skb_tailroom(skb); |
| |
| tlv = (struct tlv_desc *)skb->data; |
| len = TLV_GET_LEN(tlv); |
| buf = TLV_DATA(tlv) + len; |
| |
| va_start(args, fmt); |
| n = vscnprintf(buf, rem, fmt, args); |
| va_end(args); |
| |
| TLV_SET_LEN(tlv, n + len); |
| skb_put(skb, n); |
| |
| return n; |
| } |
| |
| static struct sk_buff *tipc_tlv_alloc(int size) |
| { |
| int hdr_len; |
| struct sk_buff *buf; |
| |
| size = TLV_SPACE(size); |
| hdr_len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN); |
| |
| buf = alloc_skb(hdr_len + size, GFP_KERNEL); |
| if (!buf) |
| return NULL; |
| |
| skb_reserve(buf, hdr_len); |
| |
| return buf; |
| } |
| |
| static struct sk_buff *tipc_get_err_tlv(char *str) |
| { |
| int str_len = strlen(str) + 1; |
| struct sk_buff *buf; |
| |
| buf = tipc_tlv_alloc(TLV_SPACE(str_len)); |
| if (buf) |
| tipc_add_tlv(buf, TIPC_TLV_ERROR_STRING, str, str_len); |
| |
| return buf; |
| } |
| |
| static inline bool string_is_valid(char *s, int len) |
| { |
| return memchr(s, '\0', len) ? true : false; |
| } |
| |
| static int __tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd, |
| struct tipc_nl_compat_msg *msg, |
| struct sk_buff *arg) |
| { |
| int len = 0; |
| int err; |
| struct sk_buff *buf; |
| struct nlmsghdr *nlmsg; |
| struct netlink_callback cb; |
| |
| memset(&cb, 0, sizeof(cb)); |
| cb.nlh = (struct nlmsghdr *)arg->data; |
| cb.skb = arg; |
| |
| buf = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| buf->sk = msg->dst_sk; |
| if (__tipc_dump_start(&cb, msg->net)) { |
| kfree_skb(buf); |
| return -ENOMEM; |
| } |
| |
| do { |
| int rem; |
| |
| len = (*cmd->dumpit)(buf, &cb); |
| |
| nlmsg_for_each_msg(nlmsg, nlmsg_hdr(buf), len, rem) { |
| struct nlattr **attrs; |
| |
| err = tipc_nlmsg_parse(nlmsg, &attrs); |
| if (err) |
| goto err_out; |
| |
| err = (*cmd->format)(msg, attrs); |
| if (err) |
| goto err_out; |
| |
| if (tipc_skb_tailroom(msg->rep) <= 1) { |
| err = -EMSGSIZE; |
| goto err_out; |
| } |
| } |
| |
| skb_reset_tail_pointer(buf); |
| buf->len = 0; |
| |
| } while (len); |
| |
| err = 0; |
| |
| err_out: |
| tipc_dump_done(&cb); |
| kfree_skb(buf); |
| |
| if (err == -EMSGSIZE) { |
| /* The legacy API only considered messages filling |
| * "ULTRA_STRING_MAX_LEN" to be truncated. |
| */ |
| if ((TIPC_SKB_MAX - msg->rep->len) <= 1) { |
| char *tail = skb_tail_pointer(msg->rep); |
| |
| if (*tail != '\0') |
| sprintf(tail - sizeof(REPLY_TRUNCATED) - 1, |
| REPLY_TRUNCATED); |
| } |
| |
| return 0; |
| } |
| |
| return err; |
| } |
| |
| static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd, |
| struct tipc_nl_compat_msg *msg) |
| { |
| struct nlmsghdr *nlh; |
| struct sk_buff *arg; |
| int err; |
| |
| if (msg->req_type && (!msg->req_size || |
| !TLV_CHECK_TYPE(msg->req, msg->req_type))) |
| return -EINVAL; |
| |
| msg->rep = tipc_tlv_alloc(msg->rep_size); |
| if (!msg->rep) |
| return -ENOMEM; |
| |
| if (msg->rep_type) |
| tipc_tlv_init(msg->rep, msg->rep_type); |
| |
| if (cmd->header) { |
| err = (*cmd->header)(msg); |
| if (err) { |
| kfree_skb(msg->rep); |
| msg->rep = NULL; |
| return err; |
| } |
| } |
| |
| arg = nlmsg_new(0, GFP_KERNEL); |
| if (!arg) { |
| kfree_skb(msg->rep); |
| msg->rep = NULL; |
| return -ENOMEM; |
| } |
| |
| nlh = nlmsg_put(arg, 0, 0, tipc_genl_family.id, 0, NLM_F_MULTI); |
| if (!nlh) { |
| kfree_skb(arg); |
| kfree_skb(msg->rep); |
| msg->rep = NULL; |
| return -EMSGSIZE; |
| } |
| nlmsg_end(arg, nlh); |
| |
| err = __tipc_nl_compat_dumpit(cmd, msg, arg); |
| if (err) { |
| kfree_skb(msg->rep); |
| msg->rep = NULL; |
| } |
| kfree_skb(arg); |
| |
| return err; |
| } |
| |
| static int __tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd, |
| struct tipc_nl_compat_msg *msg) |
| { |
| int err; |
| struct sk_buff *doit_buf; |
| struct sk_buff *trans_buf; |
| struct nlattr **attrbuf; |
| struct genl_info info; |
| |
| trans_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL); |
| if (!trans_buf) |
| return -ENOMEM; |
| |
| attrbuf = kmalloc_array(tipc_genl_family.maxattr + 1, |
| sizeof(struct nlattr *), |
| GFP_KERNEL); |
| if (!attrbuf) { |
| err = -ENOMEM; |
| goto trans_out; |
| } |
| |
| doit_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL); |
| if (!doit_buf) { |
| err = -ENOMEM; |
| goto attrbuf_out; |
| } |
| |
| memset(&info, 0, sizeof(info)); |
| info.attrs = attrbuf; |
| |
| rtnl_lock(); |
| err = (*cmd->transcode)(cmd, trans_buf, msg); |
| if (err) |
| goto doit_out; |
| |
| err = nla_parse_deprecated(attrbuf, tipc_genl_family.maxattr, |
| (const struct nlattr *)trans_buf->data, |
| trans_buf->len, NULL, NULL); |
| if (err) |
| goto doit_out; |
| |
| doit_buf->sk = msg->dst_sk; |
| |
| err = (*cmd->doit)(doit_buf, &info); |
| doit_out: |
| rtnl_unlock(); |
| |
| kfree_skb(doit_buf); |
| attrbuf_out: |
| kfree(attrbuf); |
| trans_out: |
| kfree_skb(trans_buf); |
| |
| return err; |
| } |
| |
| static int tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd, |
| struct tipc_nl_compat_msg *msg) |
| { |
| int err; |
| |
| if (msg->req_type && (!msg->req_size || |
| !TLV_CHECK_TYPE(msg->req, msg->req_type))) |
| return -EINVAL; |
| |
| err = __tipc_nl_compat_doit(cmd, msg); |
| if (err) |
| return err; |
| |
| /* The legacy API considered an empty message a success message */ |
| msg->rep = tipc_tlv_alloc(0); |
| if (!msg->rep) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_bearer_dump(struct tipc_nl_compat_msg *msg, |
| struct nlattr **attrs) |
| { |
| struct nlattr *bearer[TIPC_NLA_BEARER_MAX + 1]; |
| int err; |
| |
| if (!attrs[TIPC_NLA_BEARER]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(bearer, TIPC_NLA_BEARER_MAX, |
| attrs[TIPC_NLA_BEARER], NULL, NULL); |
| if (err) |
| return err; |
| |
| return tipc_add_tlv(msg->rep, TIPC_TLV_BEARER_NAME, |
| nla_data(bearer[TIPC_NLA_BEARER_NAME]), |
| nla_len(bearer[TIPC_NLA_BEARER_NAME])); |
| } |
| |
| static int tipc_nl_compat_bearer_enable(struct tipc_nl_compat_cmd_doit *cmd, |
| struct sk_buff *skb, |
| struct tipc_nl_compat_msg *msg) |
| { |
| struct nlattr *prop; |
| struct nlattr *bearer; |
| struct tipc_bearer_config *b; |
| int len; |
| |
| b = (struct tipc_bearer_config *)TLV_DATA(msg->req); |
| |
| bearer = nla_nest_start_noflag(skb, TIPC_NLA_BEARER); |
| if (!bearer) |
| return -EMSGSIZE; |
| |
| len = TLV_GET_DATA_LEN(msg->req); |
| len -= offsetof(struct tipc_bearer_config, name); |
| if (len <= 0) |
| return -EINVAL; |
| |
| len = min_t(int, len, TIPC_MAX_BEARER_NAME); |
| if (!string_is_valid(b->name, len)) |
| return -EINVAL; |
| |
| if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, b->name)) |
| return -EMSGSIZE; |
| |
| if (nla_put_u32(skb, TIPC_NLA_BEARER_DOMAIN, ntohl(b->disc_domain))) |
| return -EMSGSIZE; |
| |
| if (ntohl(b->priority) <= TIPC_MAX_LINK_PRI) { |
| prop = nla_nest_start_noflag(skb, TIPC_NLA_BEARER_PROP); |
| if (!prop) |
| return -EMSGSIZE; |
| if (nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(b->priority))) |
| return -EMSGSIZE; |
| nla_nest_end(skb, prop); |
| } |
| nla_nest_end(skb, bearer); |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_bearer_disable(struct tipc_nl_compat_cmd_doit *cmd, |
| struct sk_buff *skb, |
| struct tipc_nl_compat_msg *msg) |
| { |
| char *name; |
| struct nlattr *bearer; |
| int len; |
| |
| name = (char *)TLV_DATA(msg->req); |
| |
| bearer = nla_nest_start_noflag(skb, TIPC_NLA_BEARER); |
| if (!bearer) |
| return -EMSGSIZE; |
| |
| len = TLV_GET_DATA_LEN(msg->req); |
| if (len <= 0) |
| return -EINVAL; |
| |
| len = min_t(int, len, TIPC_MAX_BEARER_NAME); |
| if (!string_is_valid(name, len)) |
| return -EINVAL; |
| |
| if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, name)) |
| return -EMSGSIZE; |
| |
| nla_nest_end(skb, bearer); |
| |
| return 0; |
| } |
| |
| static inline u32 perc(u32 count, u32 total) |
| { |
| return (count * 100 + (total / 2)) / total; |
| } |
| |
| static void __fill_bc_link_stat(struct tipc_nl_compat_msg *msg, |
| struct nlattr *prop[], struct nlattr *stats[]) |
| { |
| tipc_tlv_sprintf(msg->rep, " Window:%u packets\n", |
| nla_get_u32(prop[TIPC_NLA_PROP_WIN])); |
| |
| tipc_tlv_sprintf(msg->rep, |
| " RX packets:%u fragments:%u/%u bundles:%u/%u\n", |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED])); |
| |
| tipc_tlv_sprintf(msg->rep, |
| " TX packets:%u fragments:%u/%u bundles:%u/%u\n", |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED])); |
| |
| tipc_tlv_sprintf(msg->rep, " RX naks:%u defs:%u dups:%u\n", |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]), |
| nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES])); |
| |
| tipc_tlv_sprintf(msg->rep, " TX naks:%u acks:%u dups:%u\n", |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED])); |
| |
| tipc_tlv_sprintf(msg->rep, |
| " Congestion link:%u Send queue max:%u avg:%u", |
| nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]), |
| nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE])); |
| } |
| |
| static int tipc_nl_compat_link_stat_dump(struct tipc_nl_compat_msg *msg, |
| struct nlattr **attrs) |
| { |
| char *name; |
| struct nlattr *link[TIPC_NLA_LINK_MAX + 1]; |
| struct nlattr *prop[TIPC_NLA_PROP_MAX + 1]; |
| struct nlattr *stats[TIPC_NLA_STATS_MAX + 1]; |
| int err; |
| int len; |
| |
| if (!attrs[TIPC_NLA_LINK]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(link, TIPC_NLA_LINK_MAX, |
| attrs[TIPC_NLA_LINK], NULL, NULL); |
| if (err) |
| return err; |
| |
| if (!link[TIPC_NLA_LINK_PROP]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(prop, TIPC_NLA_PROP_MAX, |
| link[TIPC_NLA_LINK_PROP], NULL, |
| NULL); |
| if (err) |
| return err; |
| |
| if (!link[TIPC_NLA_LINK_STATS]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(stats, TIPC_NLA_STATS_MAX, |
| link[TIPC_NLA_LINK_STATS], NULL, |
| NULL); |
| if (err) |
| return err; |
| |
| name = (char *)TLV_DATA(msg->req); |
| |
| len = TLV_GET_DATA_LEN(msg->req); |
| if (len <= 0) |
| return -EINVAL; |
| |
| len = min_t(int, len, TIPC_MAX_LINK_NAME); |
| if (!string_is_valid(name, len)) |
| return -EINVAL; |
| |
| if (strcmp(name, nla_data(link[TIPC_NLA_LINK_NAME])) != 0) |
| return 0; |
| |
| tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n", |
| nla_data(link[TIPC_NLA_LINK_NAME])); |
| |
| if (link[TIPC_NLA_LINK_BROADCAST]) { |
| __fill_bc_link_stat(msg, prop, stats); |
| return 0; |
| } |
| |
| if (link[TIPC_NLA_LINK_ACTIVE]) |
| tipc_tlv_sprintf(msg->rep, " ACTIVE"); |
| else if (link[TIPC_NLA_LINK_UP]) |
| tipc_tlv_sprintf(msg->rep, " STANDBY"); |
| else |
| tipc_tlv_sprintf(msg->rep, " DEFUNCT"); |
| |
| tipc_tlv_sprintf(msg->rep, " MTU:%u Priority:%u", |
| nla_get_u32(link[TIPC_NLA_LINK_MTU]), |
| nla_get_u32(prop[TIPC_NLA_PROP_PRIO])); |
| |
| tipc_tlv_sprintf(msg->rep, " Tolerance:%u ms Window:%u packets\n", |
| nla_get_u32(prop[TIPC_NLA_PROP_TOL]), |
| nla_get_u32(prop[TIPC_NLA_PROP_WIN])); |
| |
| tipc_tlv_sprintf(msg->rep, |
| " RX packets:%u fragments:%u/%u bundles:%u/%u\n", |
| nla_get_u32(link[TIPC_NLA_LINK_RX]) - |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED])); |
| |
| tipc_tlv_sprintf(msg->rep, |
| " TX packets:%u fragments:%u/%u bundles:%u/%u\n", |
| nla_get_u32(link[TIPC_NLA_LINK_TX]) - |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED])); |
| |
| tipc_tlv_sprintf(msg->rep, |
| " TX profile sample:%u packets average:%u octets\n", |
| nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]), |
| nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) / |
| nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])); |
| |
| tipc_tlv_sprintf(msg->rep, |
| " 0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% ", |
| perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]), |
| nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), |
| perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]), |
| nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), |
| perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]), |
| nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), |
| perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]), |
| nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]))); |
| |
| tipc_tlv_sprintf(msg->rep, "-16384:%u%% -32768:%u%% -66000:%u%%\n", |
| perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]), |
| nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), |
| perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]), |
| nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])), |
| perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]), |
| nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]))); |
| |
| tipc_tlv_sprintf(msg->rep, |
| " RX states:%u probes:%u naks:%u defs:%u dups:%u\n", |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_STATES]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]), |
| nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES])); |
| |
| tipc_tlv_sprintf(msg->rep, |
| " TX states:%u probes:%u naks:%u acks:%u dups:%u\n", |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_STATES]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED])); |
| |
| tipc_tlv_sprintf(msg->rep, |
| " Congestion link:%u Send queue max:%u avg:%u", |
| nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]), |
| nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]), |
| nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE])); |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg, |
| struct nlattr **attrs) |
| { |
| struct nlattr *link[TIPC_NLA_LINK_MAX + 1]; |
| struct tipc_link_info link_info; |
| int err; |
| |
| if (!attrs[TIPC_NLA_LINK]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(link, TIPC_NLA_LINK_MAX, |
| attrs[TIPC_NLA_LINK], NULL, NULL); |
| if (err) |
| return err; |
| |
| link_info.dest = nla_get_flag(link[TIPC_NLA_LINK_DEST]); |
| link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP])); |
| nla_strlcpy(link_info.str, link[TIPC_NLA_LINK_NAME], |
| TIPC_MAX_LINK_NAME); |
| |
| return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO, |
| &link_info, sizeof(link_info)); |
| } |
| |
| static int __tipc_add_link_prop(struct sk_buff *skb, |
| struct tipc_nl_compat_msg *msg, |
| struct tipc_link_config *lc) |
| { |
| switch (msg->cmd) { |
| case TIPC_CMD_SET_LINK_PRI: |
| return nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(lc->value)); |
| case TIPC_CMD_SET_LINK_TOL: |
| return nla_put_u32(skb, TIPC_NLA_PROP_TOL, ntohl(lc->value)); |
| case TIPC_CMD_SET_LINK_WINDOW: |
| return nla_put_u32(skb, TIPC_NLA_PROP_WIN, ntohl(lc->value)); |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int tipc_nl_compat_media_set(struct sk_buff *skb, |
| struct tipc_nl_compat_msg *msg) |
| { |
| struct nlattr *prop; |
| struct nlattr *media; |
| struct tipc_link_config *lc; |
| |
| lc = (struct tipc_link_config *)TLV_DATA(msg->req); |
| |
| media = nla_nest_start_noflag(skb, TIPC_NLA_MEDIA); |
| if (!media) |
| return -EMSGSIZE; |
| |
| if (nla_put_string(skb, TIPC_NLA_MEDIA_NAME, lc->name)) |
| return -EMSGSIZE; |
| |
| prop = nla_nest_start_noflag(skb, TIPC_NLA_MEDIA_PROP); |
| if (!prop) |
| return -EMSGSIZE; |
| |
| __tipc_add_link_prop(skb, msg, lc); |
| nla_nest_end(skb, prop); |
| nla_nest_end(skb, media); |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_bearer_set(struct sk_buff *skb, |
| struct tipc_nl_compat_msg *msg) |
| { |
| struct nlattr *prop; |
| struct nlattr *bearer; |
| struct tipc_link_config *lc; |
| |
| lc = (struct tipc_link_config *)TLV_DATA(msg->req); |
| |
| bearer = nla_nest_start_noflag(skb, TIPC_NLA_BEARER); |
| if (!bearer) |
| return -EMSGSIZE; |
| |
| if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, lc->name)) |
| return -EMSGSIZE; |
| |
| prop = nla_nest_start_noflag(skb, TIPC_NLA_BEARER_PROP); |
| if (!prop) |
| return -EMSGSIZE; |
| |
| __tipc_add_link_prop(skb, msg, lc); |
| nla_nest_end(skb, prop); |
| nla_nest_end(skb, bearer); |
| |
| return 0; |
| } |
| |
| static int __tipc_nl_compat_link_set(struct sk_buff *skb, |
| struct tipc_nl_compat_msg *msg) |
| { |
| struct nlattr *prop; |
| struct nlattr *link; |
| struct tipc_link_config *lc; |
| |
| lc = (struct tipc_link_config *)TLV_DATA(msg->req); |
| |
| link = nla_nest_start_noflag(skb, TIPC_NLA_LINK); |
| if (!link) |
| return -EMSGSIZE; |
| |
| if (nla_put_string(skb, TIPC_NLA_LINK_NAME, lc->name)) |
| return -EMSGSIZE; |
| |
| prop = nla_nest_start_noflag(skb, TIPC_NLA_LINK_PROP); |
| if (!prop) |
| return -EMSGSIZE; |
| |
| __tipc_add_link_prop(skb, msg, lc); |
| nla_nest_end(skb, prop); |
| nla_nest_end(skb, link); |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_link_set(struct tipc_nl_compat_cmd_doit *cmd, |
| struct sk_buff *skb, |
| struct tipc_nl_compat_msg *msg) |
| { |
| struct tipc_link_config *lc; |
| struct tipc_bearer *bearer; |
| struct tipc_media *media; |
| int len; |
| |
| lc = (struct tipc_link_config *)TLV_DATA(msg->req); |
| |
| len = TLV_GET_DATA_LEN(msg->req); |
| len -= offsetof(struct tipc_link_config, name); |
| if (len <= 0) |
| return -EINVAL; |
| |
| len = min_t(int, len, TIPC_MAX_LINK_NAME); |
| if (!string_is_valid(lc->name, len)) |
| return -EINVAL; |
| |
| media = tipc_media_find(lc->name); |
| if (media) { |
| cmd->doit = &__tipc_nl_media_set; |
| return tipc_nl_compat_media_set(skb, msg); |
| } |
| |
| bearer = tipc_bearer_find(msg->net, lc->name); |
| if (bearer) { |
| cmd->doit = &__tipc_nl_bearer_set; |
| return tipc_nl_compat_bearer_set(skb, msg); |
| } |
| |
| return __tipc_nl_compat_link_set(skb, msg); |
| } |
| |
| static int tipc_nl_compat_link_reset_stats(struct tipc_nl_compat_cmd_doit *cmd, |
| struct sk_buff *skb, |
| struct tipc_nl_compat_msg *msg) |
| { |
| char *name; |
| struct nlattr *link; |
| int len; |
| |
| name = (char *)TLV_DATA(msg->req); |
| |
| link = nla_nest_start_noflag(skb, TIPC_NLA_LINK); |
| if (!link) |
| return -EMSGSIZE; |
| |
| len = TLV_GET_DATA_LEN(msg->req); |
| if (len <= 0) |
| return -EINVAL; |
| |
| len = min_t(int, len, TIPC_MAX_LINK_NAME); |
| if (!string_is_valid(name, len)) |
| return -EINVAL; |
| |
| if (nla_put_string(skb, TIPC_NLA_LINK_NAME, name)) |
| return -EMSGSIZE; |
| |
| nla_nest_end(skb, link); |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_name_table_dump_header(struct tipc_nl_compat_msg *msg) |
| { |
| int i; |
| u32 depth; |
| struct tipc_name_table_query *ntq; |
| static const char * const header[] = { |
| "Type ", |
| "Lower Upper ", |
| "Port Identity ", |
| "Publication Scope" |
| }; |
| |
| ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req); |
| if (TLV_GET_DATA_LEN(msg->req) < sizeof(struct tipc_name_table_query)) |
| return -EINVAL; |
| |
| depth = ntohl(ntq->depth); |
| |
| if (depth > 4) |
| depth = 4; |
| for (i = 0; i < depth; i++) |
| tipc_tlv_sprintf(msg->rep, header[i]); |
| tipc_tlv_sprintf(msg->rep, "\n"); |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_name_table_dump(struct tipc_nl_compat_msg *msg, |
| struct nlattr **attrs) |
| { |
| char port_str[27]; |
| struct tipc_name_table_query *ntq; |
| struct nlattr *nt[TIPC_NLA_NAME_TABLE_MAX + 1]; |
| struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1]; |
| u32 node, depth, type, lowbound, upbound; |
| static const char * const scope_str[] = {"", " zone", " cluster", |
| " node"}; |
| int err; |
| |
| if (!attrs[TIPC_NLA_NAME_TABLE]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(nt, TIPC_NLA_NAME_TABLE_MAX, |
| attrs[TIPC_NLA_NAME_TABLE], NULL, |
| NULL); |
| if (err) |
| return err; |
| |
| if (!nt[TIPC_NLA_NAME_TABLE_PUBL]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(publ, TIPC_NLA_PUBL_MAX, |
| nt[TIPC_NLA_NAME_TABLE_PUBL], NULL, |
| NULL); |
| if (err) |
| return err; |
| |
| ntq = (struct tipc_name_table_query *)TLV_DATA(msg->req); |
| |
| depth = ntohl(ntq->depth); |
| type = ntohl(ntq->type); |
| lowbound = ntohl(ntq->lowbound); |
| upbound = ntohl(ntq->upbound); |
| |
| if (!(depth & TIPC_NTQ_ALLTYPES) && |
| (type != nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]))) |
| return 0; |
| if (lowbound && (lowbound > nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]))) |
| return 0; |
| if (upbound && (upbound < nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]))) |
| return 0; |
| |
| tipc_tlv_sprintf(msg->rep, "%-10u ", |
| nla_get_u32(publ[TIPC_NLA_PUBL_TYPE])); |
| |
| if (depth == 1) |
| goto out; |
| |
| tipc_tlv_sprintf(msg->rep, "%-10u %-10u ", |
| nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]), |
| nla_get_u32(publ[TIPC_NLA_PUBL_UPPER])); |
| |
| if (depth == 2) |
| goto out; |
| |
| node = nla_get_u32(publ[TIPC_NLA_PUBL_NODE]); |
| sprintf(port_str, "<%u.%u.%u:%u>", tipc_zone(node), tipc_cluster(node), |
| tipc_node(node), nla_get_u32(publ[TIPC_NLA_PUBL_REF])); |
| tipc_tlv_sprintf(msg->rep, "%-26s ", port_str); |
| |
| if (depth == 3) |
| goto out; |
| |
| tipc_tlv_sprintf(msg->rep, "%-10u %s", |
| nla_get_u32(publ[TIPC_NLA_PUBL_KEY]), |
| scope_str[nla_get_u32(publ[TIPC_NLA_PUBL_SCOPE])]); |
| out: |
| tipc_tlv_sprintf(msg->rep, "\n"); |
| |
| return 0; |
| } |
| |
| static int __tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, |
| struct nlattr **attrs) |
| { |
| u32 type, lower, upper; |
| struct nlattr *publ[TIPC_NLA_PUBL_MAX + 1]; |
| int err; |
| |
| if (!attrs[TIPC_NLA_PUBL]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(publ, TIPC_NLA_PUBL_MAX, |
| attrs[TIPC_NLA_PUBL], NULL, NULL); |
| if (err) |
| return err; |
| |
| type = nla_get_u32(publ[TIPC_NLA_PUBL_TYPE]); |
| lower = nla_get_u32(publ[TIPC_NLA_PUBL_LOWER]); |
| upper = nla_get_u32(publ[TIPC_NLA_PUBL_UPPER]); |
| |
| if (lower == upper) |
| tipc_tlv_sprintf(msg->rep, " {%u,%u}", type, lower); |
| else |
| tipc_tlv_sprintf(msg->rep, " {%u,%u,%u}", type, lower, upper); |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock) |
| { |
| int err; |
| void *hdr; |
| struct nlattr *nest; |
| struct sk_buff *args; |
| struct tipc_nl_compat_cmd_dump dump; |
| |
| args = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
| if (!args) |
| return -ENOMEM; |
| |
| hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI, |
| TIPC_NL_PUBL_GET); |
| if (!hdr) { |
| kfree_skb(args); |
| return -EMSGSIZE; |
| } |
| |
| nest = nla_nest_start_noflag(args, TIPC_NLA_SOCK); |
| if (!nest) { |
| kfree_skb(args); |
| return -EMSGSIZE; |
| } |
| |
| if (nla_put_u32(args, TIPC_NLA_SOCK_REF, sock)) { |
| kfree_skb(args); |
| return -EMSGSIZE; |
| } |
| |
| nla_nest_end(args, nest); |
| genlmsg_end(args, hdr); |
| |
| dump.dumpit = tipc_nl_publ_dump; |
| dump.format = __tipc_nl_compat_publ_dump; |
| |
| err = __tipc_nl_compat_dumpit(&dump, msg, args); |
| |
| kfree_skb(args); |
| |
| return err; |
| } |
| |
| static int tipc_nl_compat_sk_dump(struct tipc_nl_compat_msg *msg, |
| struct nlattr **attrs) |
| { |
| int err; |
| u32 sock_ref; |
| struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1]; |
| |
| if (!attrs[TIPC_NLA_SOCK]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(sock, TIPC_NLA_SOCK_MAX, |
| attrs[TIPC_NLA_SOCK], NULL, NULL); |
| if (err) |
| return err; |
| |
| sock_ref = nla_get_u32(sock[TIPC_NLA_SOCK_REF]); |
| tipc_tlv_sprintf(msg->rep, "%u:", sock_ref); |
| |
| if (sock[TIPC_NLA_SOCK_CON]) { |
| u32 node; |
| struct nlattr *con[TIPC_NLA_CON_MAX + 1]; |
| |
| err = nla_parse_nested_deprecated(con, TIPC_NLA_CON_MAX, |
| sock[TIPC_NLA_SOCK_CON], |
| NULL, NULL); |
| |
| if (err) |
| return err; |
| |
| node = nla_get_u32(con[TIPC_NLA_CON_NODE]); |
| tipc_tlv_sprintf(msg->rep, " connected to <%u.%u.%u:%u>", |
| tipc_zone(node), |
| tipc_cluster(node), |
| tipc_node(node), |
| nla_get_u32(con[TIPC_NLA_CON_SOCK])); |
| |
| if (con[TIPC_NLA_CON_FLAG]) |
| tipc_tlv_sprintf(msg->rep, " via {%u,%u}\n", |
| nla_get_u32(con[TIPC_NLA_CON_TYPE]), |
| nla_get_u32(con[TIPC_NLA_CON_INST])); |
| else |
| tipc_tlv_sprintf(msg->rep, "\n"); |
| } else if (sock[TIPC_NLA_SOCK_HAS_PUBL]) { |
| tipc_tlv_sprintf(msg->rep, " bound to"); |
| |
| err = tipc_nl_compat_publ_dump(msg, sock_ref); |
| if (err) |
| return err; |
| } |
| tipc_tlv_sprintf(msg->rep, "\n"); |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_media_dump(struct tipc_nl_compat_msg *msg, |
| struct nlattr **attrs) |
| { |
| struct nlattr *media[TIPC_NLA_MEDIA_MAX + 1]; |
| int err; |
| |
| if (!attrs[TIPC_NLA_MEDIA]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(media, TIPC_NLA_MEDIA_MAX, |
| attrs[TIPC_NLA_MEDIA], NULL, NULL); |
| if (err) |
| return err; |
| |
| return tipc_add_tlv(msg->rep, TIPC_TLV_MEDIA_NAME, |
| nla_data(media[TIPC_NLA_MEDIA_NAME]), |
| nla_len(media[TIPC_NLA_MEDIA_NAME])); |
| } |
| |
| static int tipc_nl_compat_node_dump(struct tipc_nl_compat_msg *msg, |
| struct nlattr **attrs) |
| { |
| struct tipc_node_info node_info; |
| struct nlattr *node[TIPC_NLA_NODE_MAX + 1]; |
| int err; |
| |
| if (!attrs[TIPC_NLA_NODE]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(node, TIPC_NLA_NODE_MAX, |
| attrs[TIPC_NLA_NODE], NULL, NULL); |
| if (err) |
| return err; |
| |
| node_info.addr = htonl(nla_get_u32(node[TIPC_NLA_NODE_ADDR])); |
| node_info.up = htonl(nla_get_flag(node[TIPC_NLA_NODE_UP])); |
| |
| return tipc_add_tlv(msg->rep, TIPC_TLV_NODE_INFO, &node_info, |
| sizeof(node_info)); |
| } |
| |
| static int tipc_nl_compat_net_set(struct tipc_nl_compat_cmd_doit *cmd, |
| struct sk_buff *skb, |
| struct tipc_nl_compat_msg *msg) |
| { |
| u32 val; |
| struct nlattr *net; |
| |
| val = ntohl(*(__be32 *)TLV_DATA(msg->req)); |
| |
| net = nla_nest_start_noflag(skb, TIPC_NLA_NET); |
| if (!net) |
| return -EMSGSIZE; |
| |
| if (msg->cmd == TIPC_CMD_SET_NODE_ADDR) { |
| if (nla_put_u32(skb, TIPC_NLA_NET_ADDR, val)) |
| return -EMSGSIZE; |
| } else if (msg->cmd == TIPC_CMD_SET_NETID) { |
| if (nla_put_u32(skb, TIPC_NLA_NET_ID, val)) |
| return -EMSGSIZE; |
| } |
| nla_nest_end(skb, net); |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_net_dump(struct tipc_nl_compat_msg *msg, |
| struct nlattr **attrs) |
| { |
| __be32 id; |
| struct nlattr *net[TIPC_NLA_NET_MAX + 1]; |
| int err; |
| |
| if (!attrs[TIPC_NLA_NET]) |
| return -EINVAL; |
| |
| err = nla_parse_nested_deprecated(net, TIPC_NLA_NET_MAX, |
| attrs[TIPC_NLA_NET], NULL, NULL); |
| if (err) |
| return err; |
| |
| id = htonl(nla_get_u32(net[TIPC_NLA_NET_ID])); |
| |
| return tipc_add_tlv(msg->rep, TIPC_TLV_UNSIGNED, &id, sizeof(id)); |
| } |
| |
| static int tipc_cmd_show_stats_compat(struct tipc_nl_compat_msg *msg) |
| { |
| msg->rep = tipc_tlv_alloc(ULTRA_STRING_MAX_LEN); |
| if (!msg->rep) |
| return -ENOMEM; |
| |
| tipc_tlv_init(msg->rep, TIPC_TLV_ULTRA_STRING); |
| tipc_tlv_sprintf(msg->rep, "TIPC version " TIPC_MOD_VER "\n"); |
| |
| return 0; |
| } |
| |
| static int tipc_nl_compat_handle(struct tipc_nl_compat_msg *msg) |
| { |
| struct tipc_nl_compat_cmd_dump dump; |
| struct tipc_nl_compat_cmd_doit doit; |
| |
| memset(&dump, 0, sizeof(dump)); |
| memset(&doit, 0, sizeof(doit)); |
| |
| switch (msg->cmd) { |
| case TIPC_CMD_NOOP: |
| msg->rep = tipc_tlv_alloc(0); |
| if (!msg->rep) |
| return -ENOMEM; |
| return 0; |
| case TIPC_CMD_GET_BEARER_NAMES: |
| msg->rep_size = MAX_BEARERS * TLV_SPACE(TIPC_MAX_BEARER_NAME); |
| dump.dumpit = tipc_nl_bearer_dump; |
| dump.format = tipc_nl_compat_bearer_dump; |
| return tipc_nl_compat_dumpit(&dump, msg); |
| case TIPC_CMD_ENABLE_BEARER: |
| msg->req_type = TIPC_TLV_BEARER_CONFIG; |
| doit.doit = __tipc_nl_bearer_enable; |
| doit.transcode = tipc_nl_compat_bearer_enable; |
| return tipc_nl_compat_doit(&doit, msg); |
| case TIPC_CMD_DISABLE_BEARER: |
| msg->req_type = TIPC_TLV_BEARER_NAME; |
| doit.doit = __tipc_nl_bearer_disable; |
| doit.transcode = tipc_nl_compat_bearer_disable; |
| return tipc_nl_compat_doit(&doit, msg); |
| case TIPC_CMD_SHOW_LINK_STATS: |
| msg->req_type = TIPC_TLV_LINK_NAME; |
| msg->rep_size = ULTRA_STRING_MAX_LEN; |
| msg->rep_type = TIPC_TLV_ULTRA_STRING; |
| dump.dumpit = tipc_nl_node_dump_link; |
| dump.format = tipc_nl_compat_link_stat_dump; |
| return tipc_nl_compat_dumpit(&dump, msg); |
| case TIPC_CMD_GET_LINKS: |
| msg->req_type = TIPC_TLV_NET_ADDR; |
| msg->rep_size = ULTRA_STRING_MAX_LEN; |
| dump.dumpit = tipc_nl_node_dump_link; |
| dump.format = tipc_nl_compat_link_dump; |
| return tipc_nl_compat_dumpit(&dump, msg); |
| case TIPC_CMD_SET_LINK_TOL: |
| case TIPC_CMD_SET_LINK_PRI: |
| case TIPC_CMD_SET_LINK_WINDOW: |
| msg->req_type = TIPC_TLV_LINK_CONFIG; |
| doit.doit = tipc_nl_node_set_link; |
| doit.transcode = tipc_nl_compat_link_set; |
| return tipc_nl_compat_doit(&doit, msg); |
| case TIPC_CMD_RESET_LINK_STATS: |
| msg->req_type = TIPC_TLV_LINK_NAME; |
| doit.doit = tipc_nl_node_reset_link_stats; |
| doit.transcode = tipc_nl_compat_link_reset_stats; |
| return tipc_nl_compat_doit(&doit, msg); |
| case TIPC_CMD_SHOW_NAME_TABLE: |
| msg->req_type = TIPC_TLV_NAME_TBL_QUERY; |
| msg->rep_size = ULTRA_STRING_MAX_LEN; |
| msg->rep_type = TIPC_TLV_ULTRA_STRING; |
| dump.header = tipc_nl_compat_name_table_dump_header; |
| dump.dumpit = tipc_nl_name_table_dump; |
| dump.format = tipc_nl_compat_name_table_dump; |
| return tipc_nl_compat_dumpit(&dump, msg); |
| case TIPC_CMD_SHOW_PORTS: |
| msg->rep_size = ULTRA_STRING_MAX_LEN; |
| msg->rep_type = TIPC_TLV_ULTRA_STRING; |
| dump.dumpit = tipc_nl_sk_dump; |
| dump.format = tipc_nl_compat_sk_dump; |
| return tipc_nl_compat_dumpit(&dump, msg); |
| case TIPC_CMD_GET_MEDIA_NAMES: |
| msg->rep_size = MAX_MEDIA * TLV_SPACE(TIPC_MAX_MEDIA_NAME); |
| dump.dumpit = tipc_nl_media_dump; |
| dump.format = tipc_nl_compat_media_dump; |
| return tipc_nl_compat_dumpit(&dump, msg); |
| case TIPC_CMD_GET_NODES: |
| msg->rep_size = ULTRA_STRING_MAX_LEN; |
| dump.dumpit = tipc_nl_node_dump; |
| dump.format = tipc_nl_compat_node_dump; |
| return tipc_nl_compat_dumpit(&dump, msg); |
| case TIPC_CMD_SET_NODE_ADDR: |
| msg->req_type = TIPC_TLV_NET_ADDR; |
| doit.doit = __tipc_nl_net_set; |
| doit.transcode = tipc_nl_compat_net_set; |
| return tipc_nl_compat_doit(&doit, msg); |
| case TIPC_CMD_SET_NETID: |
| msg->req_type = TIPC_TLV_UNSIGNED; |
| doit.doit = __tipc_nl_net_set; |
| doit.transcode = tipc_nl_compat_net_set; |
| return tipc_nl_compat_doit(&doit, msg); |
| case TIPC_CMD_GET_NETID: |
| msg->rep_size = sizeof(u32); |
| dump.dumpit = tipc_nl_net_dump; |
| dump.format = tipc_nl_compat_net_dump; |
| return tipc_nl_compat_dumpit(&dump, msg); |
| case TIPC_CMD_SHOW_STATS: |
| return tipc_cmd_show_stats_compat(msg); |
| } |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int tipc_nl_compat_recv(struct sk_buff *skb, struct genl_info *info) |
| { |
| int err; |
| int len; |
| struct tipc_nl_compat_msg msg; |
| struct nlmsghdr *req_nlh; |
| struct nlmsghdr *rep_nlh; |
| struct tipc_genlmsghdr *req_userhdr = info->userhdr; |
| |
| memset(&msg, 0, sizeof(msg)); |
| |
| req_nlh = (struct nlmsghdr *)skb->data; |
| msg.req = nlmsg_data(req_nlh) + GENL_HDRLEN + TIPC_GENL_HDRLEN; |
| msg.cmd = req_userhdr->cmd; |
| msg.net = genl_info_net(info); |
| msg.dst_sk = skb->sk; |
| |
| if ((msg.cmd & 0xC000) && (!netlink_net_capable(skb, CAP_NET_ADMIN))) { |
| msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_NET_ADMIN); |
| err = -EACCES; |
| goto send; |
| } |
| |
| msg.req_size = nlmsg_attrlen(req_nlh, GENL_HDRLEN + TIPC_GENL_HDRLEN); |
| if (msg.req_size && !TLV_OK(msg.req, msg.req_size)) { |
| msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED); |
| err = -EOPNOTSUPP; |
| goto send; |
| } |
| |
| err = tipc_nl_compat_handle(&msg); |
| if ((err == -EOPNOTSUPP) || (err == -EPERM)) |
| msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_SUPPORTED); |
| else if (err == -EINVAL) |
| msg.rep = tipc_get_err_tlv(TIPC_CFG_TLV_ERROR); |
| send: |
| if (!msg.rep) |
| return err; |
| |
| len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN); |
| skb_push(msg.rep, len); |
| rep_nlh = nlmsg_hdr(msg.rep); |
| memcpy(rep_nlh, info->nlhdr, len); |
| rep_nlh->nlmsg_len = msg.rep->len; |
| genlmsg_unicast(msg.net, msg.rep, NETLINK_CB(skb).portid); |
| |
| return err; |
| } |
| |
| static const struct genl_ops tipc_genl_compat_ops[] = { |
| { |
| .cmd = TIPC_GENL_CMD, |
| .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
| .doit = tipc_nl_compat_recv, |
| }, |
| }; |
| |
| static struct genl_family tipc_genl_compat_family __ro_after_init = { |
| .name = TIPC_GENL_NAME, |
| .version = TIPC_GENL_VERSION, |
| .hdrsize = TIPC_GENL_HDRLEN, |
| .maxattr = 0, |
| .netnsok = true, |
| .module = THIS_MODULE, |
| .ops = tipc_genl_compat_ops, |
| .n_ops = ARRAY_SIZE(tipc_genl_compat_ops), |
| }; |
| |
| int __init tipc_netlink_compat_start(void) |
| { |
| int res; |
| |
| res = genl_register_family(&tipc_genl_compat_family); |
| if (res) { |
| pr_err("Failed to register legacy compat interface\n"); |
| return res; |
| } |
| |
| return 0; |
| } |
| |
| void tipc_netlink_compat_stop(void) |
| { |
| genl_unregister_family(&tipc_genl_compat_family); |
| } |