mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 11:30:54 +07:00
inet_diag: Do not use RTA_PUT() macros
Also, no need to trim on nlmsg_put() failure, nothing has been added yet. We also want to use nlmsg_end(), nlmsg_new() and nlmsg_free(). Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf
David S. Miller
parent
7b46866dd0
commit
6e277ed59a
@ -46,9 +46,6 @@ struct inet_diag_entry {
|
||||
u16 userlocks;
|
||||
};
|
||||
|
||||
#define INET_DIAG_PUT(skb, attrtype, attrlen) \
|
||||
RTA_DATA(__RTA_PUT(skb, attrtype, attrlen))
|
||||
|
||||
static DEFINE_MUTEX(inet_diag_table_mutex);
|
||||
|
||||
static const struct inet_diag_handler *inet_diag_lock_handler(int proto)
|
||||
@ -78,28 +75,22 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
|
||||
const struct inet_sock *inet = inet_sk(sk);
|
||||
struct inet_diag_msg *r;
|
||||
struct nlmsghdr *nlh;
|
||||
struct nlattr *attr;
|
||||
void *info = NULL;
|
||||
struct inet_diag_meminfo *minfo = NULL;
|
||||
unsigned char *b = skb_tail_pointer(skb);
|
||||
const struct inet_diag_handler *handler;
|
||||
int ext = req->idiag_ext;
|
||||
|
||||
handler = inet_diag_table[req->sdiag_protocol];
|
||||
BUG_ON(handler == NULL);
|
||||
|
||||
nlh = nlmsg_put(skb, pid, seq, unlh->nlmsg_type, sizeof(*r), 0);
|
||||
if (!nlh) {
|
||||
nlmsg_trim(skb, b);
|
||||
nlh = nlmsg_put(skb, pid, seq, unlh->nlmsg_type, sizeof(*r),
|
||||
nlmsg_flags);
|
||||
if (!nlh)
|
||||
return -EMSGSIZE;
|
||||
}
|
||||
nlh->nlmsg_flags = nlmsg_flags;
|
||||
|
||||
r = nlmsg_data(nlh);
|
||||
BUG_ON(sk->sk_state == TCP_TIME_WAIT);
|
||||
|
||||
if (ext & (1 << (INET_DIAG_MEMINFO - 1)))
|
||||
minfo = INET_DIAG_PUT(skb, INET_DIAG_MEMINFO, sizeof(*minfo));
|
||||
|
||||
r->idiag_family = sk->sk_family;
|
||||
r->idiag_state = sk->sk_state;
|
||||
r->idiag_timer = 0;
|
||||
@ -117,7 +108,8 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
|
||||
* hence this needs to be included regardless of socket family.
|
||||
*/
|
||||
if (ext & (1 << (INET_DIAG_TOS - 1)))
|
||||
RTA_PUT_U8(skb, INET_DIAG_TOS, inet->tos);
|
||||
if (nla_put_u8(skb, INET_DIAG_TOS, inet->tos) < 0)
|
||||
goto errout;
|
||||
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
if (r->idiag_family == AF_INET6) {
|
||||
@ -125,24 +117,31 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
|
||||
|
||||
*(struct in6_addr *)r->id.idiag_src = np->rcv_saddr;
|
||||
*(struct in6_addr *)r->id.idiag_dst = np->daddr;
|
||||
|
||||
if (ext & (1 << (INET_DIAG_TCLASS - 1)))
|
||||
RTA_PUT_U8(skb, INET_DIAG_TCLASS, np->tclass);
|
||||
if (nla_put_u8(skb, INET_DIAG_TCLASS, np->tclass) < 0)
|
||||
goto errout;
|
||||
}
|
||||
#endif
|
||||
|
||||
r->idiag_uid = sock_i_uid(sk);
|
||||
r->idiag_inode = sock_i_ino(sk);
|
||||
|
||||
if (minfo) {
|
||||
minfo->idiag_rmem = sk_rmem_alloc_get(sk);
|
||||
minfo->idiag_wmem = sk->sk_wmem_queued;
|
||||
minfo->idiag_fmem = sk->sk_forward_alloc;
|
||||
minfo->idiag_tmem = sk_wmem_alloc_get(sk);
|
||||
if (ext & (1 << (INET_DIAG_MEMINFO - 1))) {
|
||||
struct inet_diag_meminfo minfo = {
|
||||
.idiag_rmem = sk_rmem_alloc_get(sk),
|
||||
.idiag_wmem = sk->sk_wmem_queued,
|
||||
.idiag_fmem = sk->sk_forward_alloc,
|
||||
.idiag_tmem = sk_wmem_alloc_get(sk),
|
||||
};
|
||||
|
||||
if (nla_put(skb, INET_DIAG_MEMINFO, sizeof(minfo), &minfo) < 0)
|
||||
goto errout;
|
||||
}
|
||||
|
||||
if (ext & (1 << (INET_DIAG_SKMEMINFO - 1)))
|
||||
if (sock_diag_put_meminfo(sk, skb, INET_DIAG_SKMEMINFO))
|
||||
goto rtattr_failure;
|
||||
goto errout;
|
||||
|
||||
if (icsk == NULL) {
|
||||
handler->idiag_get_info(sk, r, NULL);
|
||||
@ -169,16 +168,20 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
|
||||
}
|
||||
#undef EXPIRES_IN_MS
|
||||
|
||||
if (ext & (1 << (INET_DIAG_INFO - 1)))
|
||||
info = INET_DIAG_PUT(skb, INET_DIAG_INFO, sizeof(struct tcp_info));
|
||||
if (ext & (1 << (INET_DIAG_INFO - 1))) {
|
||||
attr = nla_reserve(skb, INET_DIAG_INFO,
|
||||
sizeof(struct tcp_info));
|
||||
if (!attr)
|
||||
goto errout;
|
||||
|
||||
if ((ext & (1 << (INET_DIAG_CONG - 1))) && icsk->icsk_ca_ops) {
|
||||
const size_t len = strlen(icsk->icsk_ca_ops->name);
|
||||
|
||||
strcpy(INET_DIAG_PUT(skb, INET_DIAG_CONG, len + 1),
|
||||
icsk->icsk_ca_ops->name);
|
||||
info = nla_data(attr);
|
||||
}
|
||||
|
||||
if ((ext & (1 << (INET_DIAG_CONG - 1))) && icsk->icsk_ca_ops)
|
||||
if (nla_put_string(skb, INET_DIAG_CONG,
|
||||
icsk->icsk_ca_ops->name) < 0)
|
||||
goto errout;
|
||||
|
||||
handler->idiag_get_info(sk, r, info);
|
||||
|
||||
if (sk->sk_state < TCP_TIME_WAIT &&
|
||||
@ -186,11 +189,10 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
|
||||
icsk->icsk_ca_ops->get_info(sk, ext, skb);
|
||||
|
||||
out:
|
||||
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
|
||||
return skb->len;
|
||||
return nlmsg_end(skb, nlh);
|
||||
|
||||
rtattr_failure:
|
||||
nlmsg_trim(skb, b);
|
||||
errout:
|
||||
nlmsg_cancel(skb, nlh);
|
||||
return -EMSGSIZE;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(inet_sk_diag_fill);
|
||||
@ -211,20 +213,16 @@ static int inet_twsk_diag_fill(struct inet_timewait_sock *tw,
|
||||
{
|
||||
long tmo;
|
||||
struct inet_diag_msg *r;
|
||||
const unsigned char *previous_tail = skb_tail_pointer(skb);
|
||||
struct nlmsghdr *nlh = nlmsg_put(skb, pid, seq,
|
||||
unlh->nlmsg_type, sizeof(*r), 0);
|
||||
struct nlmsghdr *nlh;
|
||||
|
||||
if (!nlh) {
|
||||
nlmsg_trim(skb, previous_tail);
|
||||
nlh = nlmsg_put(skb, pid, seq, unlh->nlmsg_type, sizeof(*r),
|
||||
nlmsg_flags);
|
||||
if (!nlh)
|
||||
return -EMSGSIZE;
|
||||
}
|
||||
|
||||
r = nlmsg_data(nlh);
|
||||
BUG_ON(tw->tw_state != TCP_TIME_WAIT);
|
||||
|
||||
nlh->nlmsg_flags = nlmsg_flags;
|
||||
|
||||
tmo = tw->tw_ttd - jiffies;
|
||||
if (tmo < 0)
|
||||
tmo = 0;
|
||||
@ -253,8 +251,8 @@ static int inet_twsk_diag_fill(struct inet_timewait_sock *tw,
|
||||
*(struct in6_addr *)r->id.idiag_dst = tw6->tw_v6_daddr;
|
||||
}
|
||||
#endif
|
||||
nlh->nlmsg_len = skb_tail_pointer(skb) - previous_tail;
|
||||
return skb->len;
|
||||
|
||||
return nlmsg_end(skb, nlh);
|
||||
}
|
||||
|
||||
static int sk_diag_fill(struct sock *sk, struct sk_buff *skb,
|
||||
@ -303,20 +301,20 @@ int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_s
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
err = -ENOMEM;
|
||||
rep = alloc_skb(NLMSG_SPACE((sizeof(struct inet_diag_msg) +
|
||||
sizeof(struct inet_diag_meminfo) +
|
||||
sizeof(struct tcp_info) + 64)),
|
||||
GFP_KERNEL);
|
||||
if (!rep)
|
||||
rep = nlmsg_new(sizeof(struct inet_diag_msg) +
|
||||
sizeof(struct inet_diag_meminfo) +
|
||||
sizeof(struct tcp_info) + 64, GFP_KERNEL);
|
||||
if (!rep) {
|
||||
err = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
|
||||
err = sk_diag_fill(sk, rep, req,
|
||||
NETLINK_CB(in_skb).pid,
|
||||
nlh->nlmsg_seq, 0, nlh);
|
||||
if (err < 0) {
|
||||
WARN_ON(err == -EMSGSIZE);
|
||||
kfree_skb(rep);
|
||||
nlmsg_free(rep);
|
||||
goto out;
|
||||
}
|
||||
err = netlink_unicast(sock_diag_nlsk, rep, NETLINK_CB(in_skb).pid,
|
||||
@ -597,19 +595,16 @@ static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk,
|
||||
{
|
||||
const struct inet_request_sock *ireq = inet_rsk(req);
|
||||
struct inet_sock *inet = inet_sk(sk);
|
||||
unsigned char *b = skb_tail_pointer(skb);
|
||||
struct inet_diag_msg *r;
|
||||
struct nlmsghdr *nlh;
|
||||
long tmo;
|
||||
|
||||
nlh = nlmsg_put(skb, pid, seq, unlh->nlmsg_type, sizeof(*r), 0);
|
||||
if (!nlh) {
|
||||
nlmsg_trim(skb, b);
|
||||
return -1;
|
||||
}
|
||||
nlh->nlmsg_flags = NLM_F_MULTI;
|
||||
r = nlmsg_data(nlh);
|
||||
nlh = nlmsg_put(skb, pid, seq, unlh->nlmsg_type, sizeof(*r),
|
||||
NLM_F_MULTI);
|
||||
if (!nlh)
|
||||
return -EMSGSIZE;
|
||||
|
||||
r = nlmsg_data(nlh);
|
||||
r->idiag_family = sk->sk_family;
|
||||
r->idiag_state = TCP_SYN_RECV;
|
||||
r->idiag_timer = 1;
|
||||
@ -637,9 +632,8 @@ static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk,
|
||||
*(struct in6_addr *)r->id.idiag_dst = inet6_rsk(req)->rmt_addr;
|
||||
}
|
||||
#endif
|
||||
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
|
||||
|
||||
return skb->len;
|
||||
return nlmsg_end(skb, nlh);
|
||||
}
|
||||
|
||||
static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user