From: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Date: Wed, 28 Dec 2016 11:26:33 +0000 (-0200)
Subject: sctp: simplify addr copy
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0630c56e40b0bcca299d3b4c20ffcfddbe6a0218;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

sctp: simplify addr copy

Make it a bit easier to read.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 5ed8e79bf102..6619367bb6ca 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -412,22 +412,20 @@ static void sctp_v6_copy_addrlist(struct list_head *addrlist,
 static void sctp_v6_from_skb(union sctp_addr *addr, struct sk_buff *skb,
 			     int is_saddr)
 {
-	__be16 *port;
-	struct sctphdr *sh;
+	/* Always called on head skb, so this is safe */
+	struct sctphdr *sh = sctp_hdr(skb);
+	struct sockaddr_in6 *sa = &addr->v6;
 
-	port = &addr->v6.sin6_port;
 	addr->v6.sin6_family = AF_INET6;
 	addr->v6.sin6_flowinfo = 0; /* FIXME */
 	addr->v6.sin6_scope_id = ((struct inet6_skb_parm *)skb->cb)->iif;
 
-	/* Always called on head skb, so this is safe */
-	sh = sctp_hdr(skb);
 	if (is_saddr) {
-		*port  = sh->source;
-		addr->v6.sin6_addr = ipv6_hdr(skb)->saddr;
+		sa->sin6_port = sh->source;
+		sa->sin6_addr = ipv6_hdr(skb)->saddr;
 	} else {
-		*port = sh->dest;
-		addr->v6.sin6_addr = ipv6_hdr(skb)->daddr;
+		sa->sin6_port = sh->dest;
+		sa->sin6_addr = ipv6_hdr(skb)->daddr;
 	}
 }
 
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 616a9428e0c4..f9c3c37c9ae0 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -237,23 +237,19 @@ int sctp_copy_local_addr_list(struct net *net, struct sctp_bind_addr *bp,
 static void sctp_v4_from_skb(union sctp_addr *addr, struct sk_buff *skb,
 			     int is_saddr)
 {
-	void *from;
-	__be16 *port;
-	struct sctphdr *sh;
+	/* Always called on head skb, so this is safe */
+	struct sctphdr *sh = sctp_hdr(skb);
+	struct sockaddr_in *sa = &addr->v4;
 
-	port = &addr->v4.sin_port;
 	addr->v4.sin_family = AF_INET;
 
-	/* Always called on head skb, so this is safe */
-	sh = sctp_hdr(skb);
 	if (is_saddr) {
-		*port  = sh->source;
-		from = &ip_hdr(skb)->saddr;
+		sa->sin_port = sh->source;
+		sa->sin_addr.s_addr = ip_hdr(skb)->saddr;
 	} else {
-		*port = sh->dest;
-		from = &ip_hdr(skb)->daddr;
+		sa->sin_port = sh->dest;
+		sa->sin_addr.s_addr = ip_hdr(skb)->daddr;
 	}
-	memcpy(&addr->v4.sin_addr.s_addr, from, sizeof(struct in_addr));
 }
 
 /* Initialize an sctp_addr from a socket. */