[IPV4]: Add raw drops counter.
Add raw drops counter for IPv4 in /proc/net/raw . Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -145,7 +145,8 @@ struct sock_common {
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* @sk_forward_alloc: space allocated forward
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* @sk_allocation: allocation mode
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* @sk_sndbuf: size of send buffer in bytes
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* @sk_flags: %SO_LINGER (l_onoff), %SO_BROADCAST, %SO_KEEPALIVE, %SO_OOBINLINE settings
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* @sk_flags: %SO_LINGER (l_onoff), %SO_BROADCAST, %SO_KEEPALIVE,
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* %SO_OOBINLINE settings
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* @sk_no_check: %SO_NO_CHECK setting, wether or not checkup packets
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* @sk_route_caps: route capabilities (e.g. %NETIF_F_TSO)
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* @sk_gso_type: GSO type (e.g. %SKB_GSO_TCPV4)
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@ -153,9 +154,12 @@ struct sock_common {
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* @sk_backlog: always used with the per-socket spinlock held
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* @sk_callback_lock: used with the callbacks in the end of this struct
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* @sk_error_queue: rarely used
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* @sk_prot_creator: sk_prot of original sock creator (see ipv6_setsockopt, IPV6_ADDRFORM for instance)
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* @sk_prot_creator: sk_prot of original sock creator (see ipv6_setsockopt,
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* IPV6_ADDRFORM for instance)
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* @sk_err: last error
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* @sk_err_soft: errors that don't cause failure but are the cause of a persistent failure not just 'timed out'
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* @sk_err_soft: errors that don't cause failure but are the cause of a
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* persistent failure not just 'timed out'
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* @sk_drops: raw drops counter
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* @sk_ack_backlog: current listen backlog
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* @sk_max_ack_backlog: listen backlog set in listen()
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* @sk_priority: %SO_PRIORITY setting
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@ -239,6 +243,7 @@ struct sock {
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rwlock_t sk_callback_lock;
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int sk_err,
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sk_err_soft;
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atomic_t sk_drops;
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unsigned short sk_ack_backlog;
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unsigned short sk_max_ack_backlog;
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__u32 sk_priority;
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@ -1611,6 +1611,7 @@ void sock_init_data(struct socket *sock, struct sock *sk)
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sk->sk_stamp = ktime_set(-1L, -1L);
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atomic_set(&sk->sk_refcnt, 1);
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atomic_set(&sk->sk_drops, 0);
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}
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void fastcall lock_sock_nested(struct sock *sk, int subclass)
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@ -241,7 +241,7 @@ static int raw_rcv_skb(struct sock * sk, struct sk_buff * skb)
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/* Charge it to the socket. */
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if (sock_queue_rcv_skb(sk, skb) < 0) {
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/* FIXME: increment a raw drops counter here */
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atomic_inc(&sk->sk_drops);
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kfree_skb(skb);
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return NET_RX_DROP;
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}
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@ -252,6 +252,7 @@ static int raw_rcv_skb(struct sock * sk, struct sk_buff * skb)
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int raw_rcv(struct sock *sk, struct sk_buff *skb)
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{
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if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
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atomic_inc(&sk->sk_drops);
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kfree_skb(skb);
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return NET_RX_DROP;
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}
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@ -871,28 +872,30 @@ static __inline__ char *get_raw_sock(struct sock *sp, char *tmpbuf, int i)
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srcp = inet->num;
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sprintf(tmpbuf, "%4d: %08X:%04X %08X:%04X"
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" %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p",
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" %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d",
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i, src, srcp, dest, destp, sp->sk_state,
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atomic_read(&sp->sk_wmem_alloc),
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atomic_read(&sp->sk_rmem_alloc),
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0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
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atomic_read(&sp->sk_refcnt), sp);
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atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
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return tmpbuf;
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}
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#define TMPSZ 128
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static int raw_seq_show(struct seq_file *seq, void *v)
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{
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char tmpbuf[129];
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char tmpbuf[TMPSZ+1];
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if (v == SEQ_START_TOKEN)
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seq_printf(seq, "%-127s\n",
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seq_printf(seq, "%-*s\n", TMPSZ-1,
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" sl local_address rem_address st tx_queue "
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"rx_queue tr tm->when retrnsmt uid timeout "
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"inode");
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"inode drops");
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else {
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struct raw_iter_state *state = raw_seq_private(seq);
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seq_printf(seq, "%-127s\n",
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seq_printf(seq, "%-*s\n", TMPSZ-1,
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get_raw_sock(v, tmpbuf, state->bucket));
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}
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return 0;
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