static int
rtnetlink_rcv_msg(struct sk_buf *skb, struct nlmsghdr *nlh) {
// struct net *net = sock_net(skb->sk);
rtnl_doit_func doit;
int sz_idx, kind;
int family;
int type;
int err;
type = nlh->nlmsg_type;
if (type > RTM_MAX) {
RTE_LOG(ERR, QoS, "Operation not supported!\n");
return -EOPNOTSUPP;
}
type -= RTM_BASE;
/* All the messages must have at least 1 byte length */
if (nlmsg_len(nlh) < (int)sizeof(struct rtgenmsg)) {
RTE_LOG(ERR, QoS, "Message is too short!\n");
return 0;
}
family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family;
sz_idx = type>>2;
kind = type&3;
// if (kind != 2 && !ns_capable(net->user_ns, CAP_NET_ADMIN))
// return -EPERM;
// if (kind != 2) {
// RTE_LOG(ERR, QoS, "Operation is not permitted!\n");
// return -EPERM;
// }
if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
// struct sock *rtnl;
rtnl_dumpit_func dumpit;
rtnl_calcit_func calcit;
u16 min_dump_alloc = 0;
dumpit = rtnl_get_dumpit(family, type);
if (dumpit == NULL)
return -EOPNOTSUPP;
calcit = rtnl_get_calcit(family, type);
if (calcit)
min_dump_alloc = calcit(skb, nlh);
// __rtnl_unlock();
// rtnl = net->rtnl;
{
struct netlink_dump_control c = {
.dump = dumpit,
.min_dump_alloc = min_dump_alloc,
};
err = netlink_dump_start(skb, nlh, &c);
}
// rtnl_lock();
return err;
}
static __inline__ int
tcpdiag_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
{
if (!(nlh->nlmsg_flags&NLM_F_REQUEST))
return 0;
if (nlh->nlmsg_type != TCPDIAG_GETSOCK)
goto err_inval;
if (NLMSG_LENGTH(sizeof(struct tcpdiagreq)) > skb->len)
goto err_inval;
if (nlh->nlmsg_flags&NLM_F_DUMP) {
if (nlh->nlmsg_len > 4 + NLMSG_SPACE(sizeof(struct tcpdiagreq))) {
struct rtattr *rta = (struct rtattr*)(NLMSG_DATA(nlh) + sizeof(struct tcpdiagreq));
if (rta->rta_type != TCPDIAG_REQ_BYTECODE ||
rta->rta_len < 8 ||
rta->rta_len > nlh->nlmsg_len - NLMSG_SPACE(sizeof(struct tcpdiagreq)))
goto err_inval;
if (tcpdiag_bc_audit(RTA_DATA(rta), RTA_PAYLOAD(rta)))
goto err_inval;
}
return netlink_dump_start(tcpnl, skb, nlh,
tcpdiag_dump,
tcpdiag_dump_done);
} else {
return tcpdiag_get_exact(skb, nlh);
}
err_inval:
return -EINVAL;
}
static __inline__ int
rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *errp)
{
struct rtnetlink_link *link;
struct rtnetlink_link *link_tab;
int sz_idx, kind;
int min_len;
int family;
int type;
int err;
/* Only requests are handled by kernel now */
if (!(nlh->nlmsg_flags&NLM_F_REQUEST))
return 0;
type = nlh->nlmsg_type;
/* A control message: ignore them */
if (type < RTM_BASE)
return 0;
/* Unknown message: reply with EINVAL */
if (type > RTM_MAX)
goto err_inval;
type -= RTM_BASE;
/* All the messages must have at least 1 byte length */
if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg)))
return 0;
family = ((struct rtgenmsg*)NLMSG_DATA(nlh))->rtgen_family;
if (family >= NPROTO) {
*errp = -EAFNOSUPPORT;
return -1;
}
link_tab = rtnetlink_links[family];
if (link_tab == NULL)
link_tab = rtnetlink_links[PF_UNSPEC];
link = &link_tab[type];
sz_idx = type>>2;
kind = type&3;
if (kind != 2 && security_netlink_recv(skb)) {
*errp = -EPERM;
return -1;
}
if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
if (link->dumpit == NULL)
link = &(rtnetlink_links[PF_UNSPEC][type]);
if (link->dumpit == NULL)
goto err_inval;
if ((*errp = netlink_dump_start(rtnl, skb, nlh,
link->dumpit, NULL)) != 0) {
return -1;
}
netlink_queue_skip(nlh, skb);
return -1;
}
memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *)));
min_len = rtm_min[sz_idx];
if (nlh->nlmsg_len < min_len)
goto err_inval;
if (nlh->nlmsg_len > min_len) {
int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len);
struct rtattr *attr = (void*)nlh + NLMSG_ALIGN(min_len);
while (RTA_OK(attr, attrlen)) {
unsigned flavor = attr->rta_type;
if (flavor) {
if (flavor > rta_max[sz_idx])
goto err_inval;
rta_buf[flavor-1] = attr;
}
attr = RTA_NEXT(attr, attrlen);
}
}
if (link->doit == NULL)
link = &(rtnetlink_links[PF_UNSPEC][type]);
if (link->doit == NULL)
goto err_inval;
err = link->doit(skb, nlh, (void *)&rta_buf[0]);
*errp = err;
return err;
err_inval:
*errp = -EINVAL;
return -1;
}
static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb,
struct netlink_callback *cb,
const struct smc_diag_req *req,
struct nlattr *bc)
{
struct smc_sock *smc = smc_sk(sk);
struct user_namespace *user_ns;
struct smc_diag_msg *r;
struct nlmsghdr *nlh;
nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
cb->nlh->nlmsg_type, sizeof(*r), NLM_F_MULTI);
if (!nlh)
return -EMSGSIZE;
r = nlmsg_data(nlh);
smc_diag_msg_common_fill(r, sk);
r->diag_state = sk->sk_state;
r->diag_fallback = smc->use_fallback;
user_ns = sk_user_ns(NETLINK_CB(cb->skb).sk);
if (smc_diag_msg_attrs_fill(sk, skb, r, user_ns))
goto errout;
if ((req->diag_ext & (1 << (SMC_DIAG_CONNINFO - 1))) &&
smc->conn.alert_token_local) {
struct smc_connection *conn = &smc->conn;
struct smc_diag_conninfo cinfo = {
.token = conn->alert_token_local,
.sndbuf_size = conn->sndbuf_desc ?
conn->sndbuf_desc->len : 0,
.rmbe_size = conn->rmb_desc ? conn->rmb_desc->len : 0,
.peer_rmbe_size = conn->peer_rmbe_size,
.rx_prod.wrap = conn->local_rx_ctrl.prod.wrap,
.rx_prod.count = conn->local_rx_ctrl.prod.count,
.rx_cons.wrap = conn->local_rx_ctrl.cons.wrap,
.rx_cons.count = conn->local_rx_ctrl.cons.count,
.tx_prod.wrap = conn->local_tx_ctrl.prod.wrap,
.tx_prod.count = conn->local_tx_ctrl.prod.count,
.tx_cons.wrap = conn->local_tx_ctrl.cons.wrap,
.tx_cons.count = conn->local_tx_ctrl.cons.count,
.tx_prod_flags =
*(u8 *)&conn->local_tx_ctrl.prod_flags,
.tx_conn_state_flags =
*(u8 *)&conn->local_tx_ctrl.conn_state_flags,
.rx_prod_flags = *(u8 *)&conn->local_rx_ctrl.prod_flags,
.rx_conn_state_flags =
*(u8 *)&conn->local_rx_ctrl.conn_state_flags,
.tx_prep.wrap = conn->tx_curs_prep.wrap,
.tx_prep.count = conn->tx_curs_prep.count,
.tx_sent.wrap = conn->tx_curs_sent.wrap,
.tx_sent.count = conn->tx_curs_sent.count,
.tx_fin.wrap = conn->tx_curs_fin.wrap,
.tx_fin.count = conn->tx_curs_fin.count,
};
if (nla_put(skb, SMC_DIAG_CONNINFO, sizeof(cinfo), &cinfo) < 0)
goto errout;
}
if ((req->diag_ext & (1 << (SMC_DIAG_LGRINFO - 1))) && smc->conn.lgr &&
!list_empty(&smc->conn.lgr->list)) {
struct smc_diag_lgrinfo linfo = {
.role = smc->conn.lgr->role,
.lnk[0].ibport = smc->conn.lgr->lnk[0].ibport,
.lnk[0].link_id = smc->conn.lgr->lnk[0].link_id,
};
memcpy(linfo.lnk[0].ibname,
smc->conn.lgr->lnk[0].smcibdev->ibdev->name,
sizeof(smc->conn.lgr->lnk[0].smcibdev->ibdev->name));
smc_gid_be16_convert(linfo.lnk[0].gid,
smc->conn.lgr->lnk[0].gid.raw);
smc_gid_be16_convert(linfo.lnk[0].peer_gid,
smc->conn.lgr->lnk[0].peer_gid);
if (nla_put(skb, SMC_DIAG_LGRINFO, sizeof(linfo), &linfo) < 0)
goto errout;
}
nlmsg_end(skb, nlh);
return 0;
errout:
nlmsg_cancel(skb, nlh);
return -EMSGSIZE;
}
static int smc_diag_dump_proto(struct proto *prot, struct sk_buff *skb,
struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
struct nlattr *bc = NULL;
struct hlist_head *head;
struct sock *sk;
int rc = 0;
read_lock(&prot->h.smc_hash->lock);
head = &prot->h.smc_hash->ht;
if (hlist_empty(head))
goto out;
sk_for_each(sk, head) {
if (!net_eq(sock_net(sk), net))
continue;
rc = __smc_diag_dump(sk, skb, cb, nlmsg_data(cb->nlh), bc);
if (rc)
break;
}
out:
read_unlock(&prot->h.smc_hash->lock);
return rc;
}
static int smc_diag_dump(struct sk_buff *skb, struct netlink_callback *cb)
{
int rc = 0;
rc = smc_diag_dump_proto(&smc_proto, skb, cb);
if (!rc)
rc = smc_diag_dump_proto(&smc_proto6, skb, cb);
return rc;
}
static int smc_diag_handler_dump(struct sk_buff *skb, struct nlmsghdr *h)
{
struct net *net = sock_net(skb->sk);
if (h->nlmsg_type == SOCK_DIAG_BY_FAMILY &&
h->nlmsg_flags & NLM_F_DUMP) {
{
struct netlink_dump_control c = {
.dump = smc_diag_dump,
.min_dump_alloc = SKB_WITH_OVERHEAD(32768),
};
return netlink_dump_start(net->diag_nlsk, skb, h, &c);
}
}
return 0;
}
static const struct sock_diag_handler smc_diag_handler = {
.family = AF_SMC,
.dump = smc_diag_handler_dump,
};
static int __init smc_diag_init(void)
{
return sock_diag_register(&smc_diag_handler);
}
static void __exit smc_diag_exit(void)
{
sock_diag_unregister(&smc_diag_handler);
}
static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
{
rtnl_doit_func doit;
int sz_idx, kind;
int min_len;
int family;
int type;
int err;
type = nlh->nlmsg_type;
if (type > RTM_MAX)
return -EOPNOTSUPP;
type -= RTM_BASE;
/* All the messages must have at least 1 byte length */
if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg)))
return 0;
family = ((struct rtgenmsg*)NLMSG_DATA(nlh))->rtgen_family;
if (family >= NPROTO)
return -EAFNOSUPPORT;
sz_idx = type>>2;
kind = type&3;
if (kind != 2 && security_netlink_recv(skb, CAP_NET_ADMIN))
return -EPERM;
if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
rtnl_dumpit_func dumpit;
dumpit = rtnl_get_dumpit(family, type);
if (dumpit == NULL)
return -EOPNOTSUPP;
__rtnl_unlock();
err = netlink_dump_start(rtnl, skb, nlh, dumpit, NULL);
rtnl_lock();
return err;
}
memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *)));
min_len = rtm_min[sz_idx];
if (nlh->nlmsg_len < min_len)
return -EINVAL;
if (nlh->nlmsg_len > min_len) {
int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len);
struct rtattr *attr = (void*)nlh + NLMSG_ALIGN(min_len);
while (RTA_OK(attr, attrlen)) {
unsigned flavor = attr->rta_type;
if (flavor) {
if (flavor > rta_max[sz_idx])
return -EINVAL;
rta_buf[flavor-1] = attr;
}
attr = RTA_NEXT(attr, attrlen);
}
}
doit = rtnl_get_doit(family, type);
if (doit == NULL)
return -EOPNOTSUPP;
return doit(skb, nlh, (void *)&rta_buf[0]);
}
static __inline__ int
rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *errp)
{
struct rtnetlink_link *link;
struct rtnetlink_link *link_tab;
struct rtattr *rta[RTATTR_MAX];
int exclusive = 0;
int sz_idx, kind;
int min_len;
int family;
int type;
int err;
/* Only requests are handled by kernel now */
if (!(nlh->nlmsg_flags&NLM_F_REQUEST))
return 0;
type = nlh->nlmsg_type;
/* A control message: ignore them */
if (type < RTM_BASE)
return 0;
/* Unknown message: reply with EINVAL */
if (type > RTM_MAX)
goto err_inval;
type -= RTM_BASE;
/* All the messages must have at least 1 byte length */
if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg)))
return 0;
family = ((struct rtgenmsg*)NLMSG_DATA(nlh))->rtgen_family;
if (family > NPROTO) {
*errp = -EAFNOSUPPORT;
return -1;
}
link_tab = rtnetlink_links[family];
if (link_tab == NULL)
link_tab = rtnetlink_links[PF_UNSPEC];
link = &link_tab[type];
sz_idx = type>>2;
kind = type&3;
if (kind != 2 && !cap_raised(NETLINK_CB(skb).eff_cap, CAP_NET_ADMIN)) {
*errp = -EPERM;
return -1;
}
if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
u32 rlen;
if (link->dumpit == NULL)
link = &(rtnetlink_links[PF_UNSPEC][type]);
if (link->dumpit == NULL)
goto err_inval;
if ((*errp = netlink_dump_start(rtnl, skb, nlh,
link->dumpit,
rtnetlink_done)) != 0) {
return -1;
}
rlen = NLMSG_ALIGN(nlh->nlmsg_len);
if (rlen > skb->len)
rlen = skb->len;
skb_pull(skb, rlen);
return -1;
}
if (kind != 2) {
if (rtnl_exlock_nowait()) {
*errp = 0;
return -1;
}
exclusive = 1;
}
memset(&rta, 0, sizeof(rta));
min_len = rtm_min[sz_idx];
if (nlh->nlmsg_len < min_len)
goto err_inval;
if (nlh->nlmsg_len > min_len) {
int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len);
struct rtattr *attr = (void*)nlh + NLMSG_ALIGN(min_len);
while (RTA_OK(attr, attrlen)) {
unsigned flavor = attr->rta_type;
if (flavor) {
if (flavor > rta_max[sz_idx])
goto err_inval;
rta[flavor-1] = attr;
}
attr = RTA_NEXT(attr, attrlen);
}
}
if (link->doit == NULL)
link = &(rtnetlink_links[PF_UNSPEC][type]);
if (link->doit == NULL)
goto err_inval;
err = link->doit(skb, nlh, (void *)&rta);
if (exclusive)
rtnl_exunlock();
*errp = err;
return err;
err_inval:
if (exclusive)
rtnl_exunlock();
*errp = -EINVAL;
return -1;
}
