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authorChristoph Hellwig <hch@lst.de>2020-05-28 08:12:34 +0300
committerDavid S. Miller <davem@davemloft.net>2020-05-28 21:11:46 +0300
commit7d7207c2d57080af93fc323dc6a85bd79207b4c6 (patch)
tree841e6426424bcd7b571fd88072668d6e3edd27bc
parent18d5ad62327576cbb1e5b9938a59d63ac0c15832 (diff)
downloadlinux-7d7207c2d57080af93fc323dc6a85bd79207b4c6.tar.xz
ipv6: add ip6_sock_set_recvpktinfo
Add a helper to directly set the IPV6_RECVPKTINFO sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/ipv6.h7
-rw-r--r--net/sunrpc/svcsock.c10
2 files changed, 9 insertions, 8 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 9a9075983016..5e65bf2fd32d 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -1262,4 +1262,11 @@ static inline int ip6_sock_set_addr_preferences(struct sock *sk, bool val)
return ret;
}
+static inline void ip6_sock_set_recvpktinfo(struct sock *sk)
+{
+ lock_sock(sk);
+ inet6_sk(sk)->rxopt.bits.rxinfo = true;
+ release_sock(sk);
+}
+
#endif /* _NET_IPV6_H */
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index a391892977cd..e7a0037d9b56 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -595,8 +595,6 @@ static struct svc_xprt_class svc_udp_class = {
static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv)
{
- int err, level, optname, one = 1;
-
svc_xprt_init(sock_net(svsk->sk_sock->sk), &svc_udp_class,
&svsk->sk_xprt, serv);
clear_bit(XPT_CACHE_AUTH, &svsk->sk_xprt.xpt_flags);
@@ -617,17 +615,13 @@ static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv)
switch (svsk->sk_sk->sk_family) {
case AF_INET:
ip_sock_set_pktinfo(svsk->sk_sock->sk);
- return;
+ break;
case AF_INET6:
- level = SOL_IPV6;
- optname = IPV6_RECVPKTINFO;
+ ip6_sock_set_recvpktinfo(svsk->sk_sock->sk);
break;
default:
BUG();
}
- err = kernel_setsockopt(svsk->sk_sock, level, optname,
- (char *)&one, sizeof(one));
- dprintk("svc: kernel_setsockopt returned %d\n", err);
}
/*