From 6ebf71bab9fb476fc8132be4c12b88201278f0ca Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 28 May 2020 07:12:26 +0200 Subject: ipv4: add ip_sock_set_tos Add a helper to directly set the IP_TOS sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig Acked-by: Sagi Grimberg Signed-off-by: David S. Miller --- include/net/ip.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/net/ip.h') diff --git a/include/net/ip.h b/include/net/ip.h index 5b317c9f4470..2fc52e26fa88 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -765,4 +765,6 @@ static inline bool inetdev_valid_mtu(unsigned int mtu) return likely(mtu >= IPV4_MIN_MTU); } +void ip_sock_set_tos(struct sock *sk, int val); + #endif /* _IP_H */ -- cgit v1.2.3 From c4e446bf5a06a1db24b4f0115a89f0380a495c62 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 28 May 2020 07:12:27 +0200 Subject: ipv4: add ip_sock_set_freebind Add a helper to directly set the IP_FREEBIND sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig Signed-off-by: David S. Miller --- drivers/target/iscsi/iscsi_target_login.c | 13 +++---------- include/net/ip.h | 1 + net/ipv4/ip_sockglue.c | 8 ++++++++ 3 files changed, 12 insertions(+), 10 deletions(-) (limited to 'include/net/ip.h') diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c index b561b07a869a..85748e338858 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -15,6 +15,7 @@ #include #include #include /* TCP_NODELAY */ +#include #include /* ipv6_addr_v4mapped() */ #include #include @@ -855,7 +856,7 @@ int iscsit_setup_np( struct sockaddr_storage *sockaddr) { struct socket *sock = NULL; - int backlog = ISCSIT_TCP_BACKLOG, ret, opt = 0, len; + int backlog = ISCSIT_TCP_BACKLOG, ret, len; switch (np->np_network_transport) { case ISCSI_TCP: @@ -900,15 +901,7 @@ int iscsit_setup_np( if (np->np_network_transport == ISCSI_TCP) tcp_sock_set_nodelay(sock->sk); sock_set_reuseaddr(sock->sk); - - opt = 1; - ret = kernel_setsockopt(sock, IPPROTO_IP, IP_FREEBIND, - (char *)&opt, sizeof(opt)); - if (ret < 0) { - pr_err("kernel_setsockopt() for IP_FREEBIND" - " failed\n"); - goto fail; - } + ip_sock_set_freebind(sock->sk); ret = kernel_bind(sock, (struct sockaddr *)&np->np_sockaddr, len); if (ret < 0) { diff --git a/include/net/ip.h b/include/net/ip.h index 2fc52e26fa88..5f5d8226b6ab 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -765,6 +765,7 @@ static inline bool inetdev_valid_mtu(unsigned int mtu) return likely(mtu >= IPV4_MIN_MTU); } +void ip_sock_set_freebind(struct sock *sk); void ip_sock_set_tos(struct sock *sk, int val); #endif /* _IP_H */ diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index b43a29e11f4a..767838d2030d 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -581,6 +581,14 @@ void ip_sock_set_tos(struct sock *sk, int val) } EXPORT_SYMBOL(ip_sock_set_tos); +void ip_sock_set_freebind(struct sock *sk) +{ + lock_sock(sk); + inet_sk(sk)->freebind = true; + release_sock(sk); +} +EXPORT_SYMBOL(ip_sock_set_freebind); + /* * Socket option code for IP. This is the end of the line after any * TCP,UDP etc options on an IP socket. -- cgit v1.2.3 From db45c0ef258ef6c7ef3c1b8ea9e06e133e083c27 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 28 May 2020 07:12:28 +0200 Subject: ipv4: add ip_sock_set_recverr Add a helper to directly set the IP_RECVERR sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig Reviewed-by: David Howells Signed-off-by: David S. Miller --- include/net/ip.h | 1 + net/ipv4/ip_sockglue.c | 8 ++++++++ net/rxrpc/local_object.c | 8 +------- 3 files changed, 10 insertions(+), 7 deletions(-) (limited to 'include/net/ip.h') diff --git a/include/net/ip.h b/include/net/ip.h index 5f5d8226b6ab..f063a491b906 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -766,6 +766,7 @@ static inline bool inetdev_valid_mtu(unsigned int mtu) } void ip_sock_set_freebind(struct sock *sk); +void ip_sock_set_recverr(struct sock *sk); void ip_sock_set_tos(struct sock *sk, int val); #endif /* _IP_H */ diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 767838d2030d..aca6b81da9ba 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -589,6 +589,14 @@ void ip_sock_set_freebind(struct sock *sk) } EXPORT_SYMBOL(ip_sock_set_freebind); +void ip_sock_set_recverr(struct sock *sk) +{ + lock_sock(sk); + inet_sk(sk)->recverr = true; + release_sock(sk); +} +EXPORT_SYMBOL(ip_sock_set_recverr); + /* * Socket option code for IP. This is the end of the line after any * TCP,UDP etc options on an IP socket. diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c index 5ea2bd01fdd5..4c0e8fe5ec1f 100644 --- a/net/rxrpc/local_object.c +++ b/net/rxrpc/local_object.c @@ -171,13 +171,7 @@ static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net) /* Fall through */ case AF_INET: /* we want to receive ICMP errors */ - opt = 1; - ret = kernel_setsockopt(local->socket, SOL_IP, IP_RECVERR, - (char *) &opt, sizeof(opt)); - if (ret < 0) { - _debug("setsockopt failed"); - goto error; - } + ip_sock_set_recverr(local->socket->sk); /* we want to set the don't fragment bit */ opt = IP_PMTUDISC_DO; -- cgit v1.2.3 From 2de569bda2a66d1308ad3f205bb29cf4f95f5636 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 28 May 2020 07:12:29 +0200 Subject: ipv4: add ip_sock_set_mtu_discover Add a helper to directly set the IP_MTU_DISCOVER sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig Reviewed-by: David Howells [rxrpc bits] Signed-off-by: David S. Miller --- include/net/ip.h | 1 + net/ipv4/ip_sockglue.c | 11 +++++++++++ net/rxrpc/local_object.c | 8 +------- net/rxrpc/output.c | 14 +++++--------- 4 files changed, 18 insertions(+), 16 deletions(-) (limited to 'include/net/ip.h') diff --git a/include/net/ip.h b/include/net/ip.h index f063a491b906..d3649c49dd33 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -766,6 +766,7 @@ static inline bool inetdev_valid_mtu(unsigned int mtu) } void ip_sock_set_freebind(struct sock *sk); +int ip_sock_set_mtu_discover(struct sock *sk, int val); void ip_sock_set_recverr(struct sock *sk); void ip_sock_set_tos(struct sock *sk, int val); diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index aca6b81da9ba..aa115be11dcf 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -597,6 +597,17 @@ void ip_sock_set_recverr(struct sock *sk) } EXPORT_SYMBOL(ip_sock_set_recverr); +int ip_sock_set_mtu_discover(struct sock *sk, int val) +{ + if (val < IP_PMTUDISC_DONT || val > IP_PMTUDISC_OMIT) + return -EINVAL; + lock_sock(sk); + inet_sk(sk)->pmtudisc = val; + release_sock(sk); + return 0; +} +EXPORT_SYMBOL(ip_sock_set_mtu_discover); + /* * Socket option code for IP. This is the end of the line after any * TCP,UDP etc options on an IP socket. diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c index 4c0e8fe5ec1f..6f4e6b4817cf 100644 --- a/net/rxrpc/local_object.c +++ b/net/rxrpc/local_object.c @@ -174,13 +174,7 @@ static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net) ip_sock_set_recverr(local->socket->sk); /* we want to set the don't fragment bit */ - opt = IP_PMTUDISC_DO; - ret = kernel_setsockopt(local->socket, SOL_IP, IP_MTU_DISCOVER, - (char *) &opt, sizeof(opt)); - if (ret < 0) { - _debug("setsockopt failed"); - goto error; - } + ip_sock_set_mtu_discover(local->socket->sk, IP_PMTUDISC_DO); /* We want receive timestamps. */ sock_enable_timestamps(local->socket->sk); diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c index f8b632a5c619..1ba43c3df4ad 100644 --- a/net/rxrpc/output.c +++ b/net/rxrpc/output.c @@ -321,7 +321,7 @@ int rxrpc_send_data_packet(struct rxrpc_call *call, struct sk_buff *skb, struct kvec iov[2]; rxrpc_serial_t serial; size_t len; - int ret, opt; + int ret; _enter(",{%d}", skb->len); @@ -473,18 +473,14 @@ send_fragmentable: switch (conn->params.local->srx.transport.family) { case AF_INET6: case AF_INET: - opt = IP_PMTUDISC_DONT; - kernel_setsockopt(conn->params.local->socket, - SOL_IP, IP_MTU_DISCOVER, - (char *)&opt, sizeof(opt)); + ip_sock_set_mtu_discover(conn->params.local->socket->sk, + IP_PMTUDISC_DONT); ret = kernel_sendmsg(conn->params.local->socket, &msg, iov, 2, len); conn->params.peer->last_tx_at = ktime_get_seconds(); - opt = IP_PMTUDISC_DO; - kernel_setsockopt(conn->params.local->socket, - SOL_IP, IP_MTU_DISCOVER, - (char *)&opt, sizeof(opt)); + ip_sock_set_mtu_discover(conn->params.local->socket->sk, + IP_PMTUDISC_DO); break; default: -- cgit v1.2.3 From c1f9ec5776dd05eaf62cf6788ecdfc905dc8ec2b Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 28 May 2020 07:12:30 +0200 Subject: ipv4: add ip_sock_set_pktinfo Add a helper to directly set the IP_PKTINFO sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig Signed-off-by: David S. Miller --- include/net/ip.h | 1 + net/ipv4/ip_sockglue.c | 8 ++++++++ net/sunrpc/svcsock.c | 5 ++--- 3 files changed, 11 insertions(+), 3 deletions(-) (limited to 'include/net/ip.h') diff --git a/include/net/ip.h b/include/net/ip.h index d3649c49dd33..04ebe7bf54c6 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -767,6 +767,7 @@ static inline bool inetdev_valid_mtu(unsigned int mtu) void ip_sock_set_freebind(struct sock *sk); int ip_sock_set_mtu_discover(struct sock *sk, int val); +void ip_sock_set_pktinfo(struct sock *sk); void ip_sock_set_recverr(struct sock *sk); void ip_sock_set_tos(struct sock *sk, int val); diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index aa115be11dcf..84ec3703c909 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -608,6 +608,14 @@ int ip_sock_set_mtu_discover(struct sock *sk, int val) } EXPORT_SYMBOL(ip_sock_set_mtu_discover); +void ip_sock_set_pktinfo(struct sock *sk) +{ + lock_sock(sk); + inet_sk(sk)->cmsg_flags |= IP_CMSG_PKTINFO; + release_sock(sk); +} +EXPORT_SYMBOL(ip_sock_set_pktinfo); + /* * Socket option code for IP. This is the end of the line after any * TCP,UDP etc options on an IP socket. diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index 6773dacc64d8..7a805d165689 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -616,9 +616,8 @@ static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv) /* make sure we get destination address info */ switch (svsk->sk_sk->sk_family) { case AF_INET: - level = SOL_IP; - optname = IP_PKTINFO; - break; + ip_sock_set_pktinfo(svsk->sk_sock->sk); + return; case AF_INET6: level = SOL_IPV6; optname = IPV6_RECVPKTINFO; -- cgit v1.2.3