diff mbox series

[1/4] net/tls: handle MSG_EOR for tls_sw TX flow

Message ID 20230620102856.56074-2-hare@suse.de (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net/tls: fixes for NVMe-over-TLS | expand

Checks

Context Check Description
netdev/series_format warning Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
netdev/cc_maintainers warning 3 maintainers not CCed: borisp@nvidia.com john.fastabend@gmail.com davem@davemloft.net
netdev/build_clang success Errors and warnings before: 8 this patch: 8
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 8 this patch: 8
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 33 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Hannes Reinecke June 20, 2023, 10:28 a.m. UTC 
tls_sw_sendmsg() / tls_do_sw_sendpage() already handles
MSG_MORE / MSG_SENDPAGE_NOTLAST, but bails out on MSG_EOR.
But seeing that MSG_EOR is basically the opposite of
MSG_MORE / MSG_SENDPAGE_NOTLAST this patch adds handling
MSG_EOR by treating it as the negation of MSG_MORE.
And erroring out if MSG_EOR is specified with either
MSG_MORE or MSG_SENDPAGE_NOTLAST.

Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
 net/tls/tls_sw.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 319f61590d2c..97379e34c997 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -984,6 +984,9 @@  static int tls_sw_sendmsg_locked(struct sock *sk, struct msghdr *msg,
 	int ret = 0;
 	int pending;
 
+	if (!eor && (msg->msg_flags & MSG_EOR))
+		return -EINVAL;
+
 	if (unlikely(msg->msg_controllen)) {
 		ret = tls_process_cmsg(sk, msg, &record_type);
 		if (ret) {
@@ -1193,7 +1196,7 @@  int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 	int ret;
 
 	if (msg->msg_flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL |
-			       MSG_CMSG_COMPAT | MSG_SPLICE_PAGES |
+			       MSG_CMSG_COMPAT | MSG_SPLICE_PAGES | MSG_EOR |
 			       MSG_SENDPAGE_NOTLAST | MSG_SENDPAGE_NOPOLICY))
 		return -EOPNOTSUPP;
 
@@ -1287,7 +1290,7 @@  int tls_sw_sendpage_locked(struct sock *sk, struct page *page,
 	struct bio_vec bvec;
 	struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES, };
 
-	if (flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL |
+	if (flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL | MSG_EOR |
 		      MSG_SENDPAGE_NOTLAST | MSG_SENDPAGE_NOPOLICY |
 		      MSG_NO_SHARED_FRAGS))
 		return -EOPNOTSUPP;
@@ -1305,7 +1308,7 @@  int tls_sw_sendpage(struct sock *sk, struct page *page,
 	struct bio_vec bvec;
 	struct msghdr msg = { .msg_flags = flags | MSG_SPLICE_PAGES, };
 
-	if (flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL |
+	if (flags & ~(MSG_MORE | MSG_DONTWAIT | MSG_NOSIGNAL | MSG_EOR |
 		      MSG_SENDPAGE_NOTLAST | MSG_SENDPAGE_NOPOLICY))
 		return -EOPNOTSUPP;
 	if (flags & MSG_SENDPAGE_NOTLAST)