net: Kill MSG_SENDPAGE_NOTLAST

Now that ->sendpage() has been removed, MSG_SENDPAGE_NOTLAST can be cleaned
up.  Things were converted to use MSG_MORE instead, but the protocol
sendpage stubs still convert MSG_SENDPAGE_NOTLAST to MSG_MORE, which is now
unnecessary.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-afs@lists.infradead.org
cc: mptcp@lists.linux.dev
cc: rds-devel@oss.oracle.com
cc: tipc-discussion@lists.sourceforge.net
cc: virtualization@lists.linux-foundation.org
Link: https://lore.kernel.org/r/20230623225513.2732256-17-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/linux/socket.h b/include/linux/socket.h
index 5820470..39b74d8 100644 (file)
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -319,7 +319,6 @@ struct ucred {
 #define MSG_MORE       0x8000  /* Sender will send more */
 #define MSG_WAITFORONE 0x10000 /* recvmmsg(): block until 1+ packets avail */
 #define MSG_SENDPAGE_NOPOLICY 0x10000 /* sendpage() internal : do no apply policy */
-#define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */
 #define MSG_BATCH      0x40000 /* sendmmsg(): more messages coming */
 #define MSG_EOF         MSG_FIN
 #define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */
@@ -341,8 +340,7 @@ struct ucred {
 
 /* Flags to be cleared on entry by sendmsg and sendmmsg syscalls */
 #define MSG_INTERNAL_SENDMSG_FLAGS \
-       (MSG_SPLICE_PAGES | MSG_SENDPAGE_NOPOLICY | MSG_SENDPAGE_NOTLAST | \
-        MSG_SENDPAGE_DECRYPTED)
+       (MSG_SPLICE_PAGES | MSG_SENDPAGE_NOPOLICY | MSG_SENDPAGE_DECRYPTED)
 
 /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */
 #define SOL_IP         0

diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index 840ee06..2021fe5 100644 (file)
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -441,8 +441,7 @@ static int tls_push_data(struct sock *sk,
        long timeo;
 
        if (flags &
-           ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL | MSG_SENDPAGE_NOTLAST |
-             MSG_SPLICE_PAGES))
+           ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL | MSG_SPLICE_PAGES))
                return -EOPNOTSUPP;
 
        if (unlikely(sk->sk_err))

diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index d5ed4d4..b689612 100644 (file)
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -127,7 +127,7 @@ int tls_push_sg(struct sock *sk,
 {
        struct bio_vec bvec;
        struct msghdr msg = {
-               .msg_flags = MSG_SENDPAGE_NOTLAST | MSG_SPLICE_PAGES | flags,
+               .msg_flags = MSG_SPLICE_PAGES | flags,
        };
        int ret = 0;
        struct page *p;

diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 9b3aa89..53f944e 100644 (file)
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1194,7 +1194,7 @@ int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 
        if (msg->msg_flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL |
                               MSG_CMSG_COMPAT | MSG_SPLICE_PAGES |
-                              MSG_SENDPAGE_NOTLAST | MSG_SENDPAGE_NOPOLICY))
+                              MSG_SENDPAGE_NOPOLICY))
                return -EOPNOTSUPP;
 
        ret = mutex_lock_interruptible(&tls_ctx->tx_lock);

diff --git a/tools/perf/trace/beauty/include/linux/socket.h b/tools/perf/trace/beauty/include/linux/socket.h
index 13c3a23..3bef212 100644 (file)
--- a/tools/perf/trace/beauty/include/linux/socket.h
+++ b/tools/perf/trace/beauty/include/linux/socket.h
@@ -318,7 +318,6 @@ struct ucred {
 #define MSG_MORE       0x8000  /* Sender will send more */
 #define MSG_WAITFORONE 0x10000 /* recvmmsg(): block until 1+ packets avail */
 #define MSG_SENDPAGE_NOPOLICY 0x10000 /* sendpage() internal : do no apply policy */
-#define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */
 #define MSG_BATCH      0x40000 /* sendmmsg(): more messages coming */
 #define MSG_EOF         MSG_FIN
 #define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */

diff --git a/tools/perf/trace/beauty/msg_flags.c b/tools/perf/trace/beauty/msg_flags.c
index ea68db0..5cdebd7 100644 (file)
--- a/tools/perf/trace/beauty/msg_flags.c
+++ b/tools/perf/trace/beauty/msg_flags.c
@@ -8,9 +8,6 @@
 #ifndef MSG_WAITFORONE
 #define MSG_WAITFORONE            0x10000
 #endif
-#ifndef MSG_SENDPAGE_NOTLAST
-#define MSG_SENDPAGE_NOTLAST      0x20000
-#endif
 #ifndef MSG_FASTOPEN
 #define MSG_FASTOPEN           0x20000000
 #endif
@@ -50,7 +47,7 @@ static size_t syscall_arg__scnprintf_msg_flags(char *bf, size_t size,
        P_MSG_FLAG(NOSIGNAL);
        P_MSG_FLAG(MORE);
        P_MSG_FLAG(WAITFORONE);
-       P_MSG_FLAG(SENDPAGE_NOTLAST);
+       P_MSG_FLAG(SPLICE_PAGES);
        P_MSG_FLAG(FASTOPEN);
        P_MSG_FLAG(CMSG_CLOEXEC);
 #undef P_MSG_FLAG