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Date: Mon, 29 May 2023 18:03:40 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
<pabeni@...hat.com>, David Ahern <dsahern@...nel.org>, Willem de Bruijn
<willemdebruijn.kernel@...il.com>
CC: Kuniyuki Iwashima <kuniyu@...zon.com>, Kuniyuki Iwashima
<kuni1840@...il.com>, <netdev@...r.kernel.org>
Subject: [PATCH v1 net-next 06/14] udp: Remove UDPLITE_SEND_CSCOV and UDPLITE_RECV_CSCOV.
We could set partial checksum coverage for UDP-Lite via setsockopt,
but it's no longer supported.
Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.com>
---
include/net/udplite.h | 4 ----
net/ipv4/udp.c | 45 ++-----------------------------------------
net/ipv6/udp.c | 4 ++--
3 files changed, 4 insertions(+), 49 deletions(-)
diff --git a/include/net/udplite.h b/include/net/udplite.h
index e436917f9b14..f4c513cff753 100644
--- a/include/net/udplite.h
+++ b/include/net/udplite.h
@@ -8,10 +8,6 @@
#include <net/ip6_checksum.h>
#include <net/udp.h>
-/* UDP-Lite socket options */
-#define UDPLITE_SEND_CSCOV 10 /* sender partial coverage (as sent) */
-#define UDPLITE_RECV_CSCOV 11 /* receiver partial coverage (threshold ) */
-
/*
* Checksum computation is all in software, hence simpler getfrag.
*/
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 9d836604562a..dc416db001c8 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2642,7 +2642,6 @@ int udp_lib_setsockopt(struct sock *sk, int level, int optname,
struct udp_sock *up = udp_sk(sk);
int val, valbool;
int err = 0;
- int is_udplite = IS_UDPLITE(sk);
if (level == SOL_SOCKET) {
err = sk_setsockopt(sk, level, optname, optval, optlen);
@@ -2727,36 +2726,6 @@ int udp_lib_setsockopt(struct sock *sk, int level, int optname,
release_sock(sk);
break;
- /*
- * UDP-Lite's partial checksum coverage (RFC 3828).
- */
- /* The sender sets actual checksum coverage length via this option.
- * The case coverage > packet length is handled by send module. */
- case UDPLITE_SEND_CSCOV:
- if (!is_udplite) /* Disable the option on UDP sockets */
- return -ENOPROTOOPT;
- if (val != 0 && val < 8) /* Illegal coverage: use default (8) */
- val = 8;
- else if (val > USHRT_MAX)
- val = USHRT_MAX;
- up->pcslen = val;
- up->pcflag |= UDPLITE_SEND_CC;
- break;
-
- /* The receiver specifies a minimum checksum coverage value. To make
- * sense, this should be set to at least 8 (as done below). If zero is
- * used, this again means full checksum coverage. */
- case UDPLITE_RECV_CSCOV:
- if (!is_udplite) /* Disable the option on UDP sockets */
- return -ENOPROTOOPT;
- if (val != 0 && val < 8) /* Avoid silly minimal values. */
- val = 8;
- else if (val > USHRT_MAX)
- val = USHRT_MAX;
- up->pcrlen = val;
- up->pcflag |= UDPLITE_RECV_CC;
- break;
-
default:
err = -ENOPROTOOPT;
break;
@@ -2769,7 +2738,7 @@ EXPORT_SYMBOL(udp_lib_setsockopt);
static int udp_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval,
unsigned int optlen)
{
- if (level == SOL_UDP || level == SOL_UDPLITE || level == SOL_SOCKET)
+ if (level == SOL_UDP || level == SOL_SOCKET)
return udp_lib_setsockopt(sk, level, optname,
optval, optlen,
udp_push_pending_frames);
@@ -2815,16 +2784,6 @@ int udp_lib_getsockopt(struct sock *sk, int level, int optname,
val = up->gro_enabled;
break;
- /* The following two cannot be changed on UDP sockets, the return is
- * always 0 (which corresponds to the full checksum coverage of UDP). */
- case UDPLITE_SEND_CSCOV:
- val = up->pcslen;
- break;
-
- case UDPLITE_RECV_CSCOV:
- val = up->pcrlen;
- break;
-
default:
return -ENOPROTOOPT;
}
@@ -2840,7 +2799,7 @@ EXPORT_SYMBOL(udp_lib_getsockopt);
static int udp_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
- if (level == SOL_UDP || level == SOL_UDPLITE)
+ if (level == SOL_UDP)
return udp_lib_getsockopt(sk, level, optname, optval, optlen);
return ip_getsockopt(sk, level, optname, optval, optlen);
}
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 161686aa0dbe..ecd304bbecb4 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1680,7 +1680,7 @@ static void udpv6_destroy_sock(struct sock *sk)
static int udpv6_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval,
unsigned int optlen)
{
- if (level == SOL_UDP || level == SOL_UDPLITE || level == SOL_SOCKET)
+ if (level == SOL_UDP || level == SOL_SOCKET)
return udp_lib_setsockopt(sk, level, optname,
optval, optlen,
udp_v6_push_pending_frames);
@@ -1690,7 +1690,7 @@ static int udpv6_setsockopt(struct sock *sk, int level, int optname, sockptr_t o
static int udpv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
- if (level == SOL_UDP || level == SOL_UDPLITE)
+ if (level == SOL_UDP)
return udp_lib_getsockopt(sk, level, optname, optval, optlen);
return ipv6_getsockopt(sk, level, optname, optval, optlen);
}
--
2.30.2
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