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net/tls: handle MSG_EOR for tls_sw TX flow 

tls_sw_sendmsg() already handles MSG_MORE, but bails
out on MSG_EOR.
Seeing that MSG_EOR is basically the opposite of
MSG_MORE this patch adds handling MSG_EOR by treating
it as the negation of MSG_MORE.
And erroring out if MSG_EOR is specified with MSG_MORE.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20230726191556.41714-2-hare@suse.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Hannes Reinecke 2023-07-26 21:15:51 +02:00 committed by Jakub Kicinski
parent 6eaae19807
commit e22e358bbe
1 changed files with 4 additions and 1 deletions
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5
net/tls/tls_sw.c
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@ -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_NOPOLICY))
return -EOPNOTSUPP;