net: add sk_drops_skbadd() helper

Existing sk_drops_add() helper is renamed to sk_drops_skbadd().

Add sk_drops_add() and convert sk_drops_inc() to use it.

Signed-off-by: Eric Dumazet <[e-mail]>
Reviewed-by: Kuniyuki Iwashima <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Paolo Abeni <[e-mail]>

include/linux/skmsg.h

···
 
 static inline void sock_drop(struct sock *sk, struct sk_buff *skb)
 {
-	sk_drops_add(sk, skb);
+	sk_drops_skbadd(sk, skb);
 	kfree_skb(skb);
 }
 

include/net/sock.h

···
 #define sock_skb_cb_check_size(size) \
 	BUILD_BUG_ON((size) > SOCK_SKB_CB_OFFSET)
 
+static inline void sk_drops_add(struct sock *sk, int segs)
+{
+	atomic_add(segs, &sk->sk_drops);
+}
+
 static inline void sk_drops_inc(struct sock *sk)
 {
-	atomic_inc(&sk->sk_drops);
+	sk_drops_add(sk, 1);
 }
 
 static inline int sk_drops_read(const struct sock *sk)
···
 						sk_drops_read(sk) : 0;
 }
 
-static inline void sk_drops_add(struct sock *sk, const struct sk_buff *skb)
+static inline void sk_drops_skbadd(struct sock *sk, const struct sk_buff *skb)
 {
 	int segs = max_t(u16, 1, skb_shinfo(skb)->gso_segs);
 
-	atomic_add(segs, &sk->sk_drops);
+	sk_drops_add(sk, segs);
 }
 
 static inline ktime_t sock_read_timestamp(struct sock *sk)

include/net/udp.h

···
 	return segs;
 
 drop:
-	atomic_add(drop_count, &sk->sk_drops);
+	sk_drops_add(sk, drop_count);
 	SNMP_ADD_STATS(__UDPX_MIB(sk, ipv4), UDP_MIB_INERRORS, drop_count);
 	kfree_skb(skb);
 	return NULL;

net/ipv4/tcp_input.c

···
 noinline_for_tracing static void
 tcp_drop_reason(struct sock *sk, struct sk_buff *skb, enum skb_drop_reason reason)
 {
-	sk_drops_add(sk, skb);
+	sk_drops_skbadd(sk, skb);
 	sk_skb_reason_drop(sk, skb, reason);
 }
 

net/ipv4/tcp_ipv4.c

···
 						       &iph->saddr, &iph->daddr,
 						       AF_INET, dif, sdif);
 		if (unlikely(drop_reason)) {
-			sk_drops_add(sk, skb);
+			sk_drops_skbadd(sk, skb);
 			reqsk_put(req);
 			goto discard_it;
 		}
···
 	return 0;
 
 discard_and_relse:
-	sk_drops_add(sk, skb);
+	sk_drops_skbadd(sk, skb);
 	if (refcounted)
 		sock_put(sk);
 	goto discard_it;

net/ipv6/tcp_ipv6.c

···
 						       &hdr->saddr, &hdr->daddr,
 						       AF_INET6, dif, sdif);
 		if (drop_reason) {
-			sk_drops_add(sk, skb);
+			sk_drops_skbadd(sk, skb);
 			reqsk_put(req);
 			goto discard_it;
 		}
···
 	return 0;
 
 discard_and_relse:
-	sk_drops_add(sk, skb);
+	sk_drops_skbadd(sk, skb);
 	if (refcounted)
 		sock_put(sk);
 	goto discard_it;

net/mptcp/protocol.c

···
 
 static void mptcp_drop(struct sock *sk, struct sk_buff *skb)
 {
-	sk_drops_add(sk, skb);
+	sk_drops_skbadd(sk, skb);
 	__kfree_skb(skb);
 }