netdev - [PATCH net-next 3/6] net/tls: make allocation failure unlikely

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Date:   Sun,  6 Oct 2019 21:09:29 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, oss-drivers@...ronome.com,
        davejwatson@...com, borisp@...lanox.com, aviadye@...lanox.com,
        john.fastabend@...il.com, daniel@...earbox.net,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Dirk van der Merwe <dirk.vandermerwe@...ronome.com>
Subject: [PATCH net-next 3/6] net/tls: make allocation failure unlikely

Make sure GCC realizes it's unlikely that allocations will fail.

Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@...ronome.com>
---
 net/tls/tls_device.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index fcf38edc07d6..23c19b8ff04e 100644
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -452,9 +452,8 @@ static int tls_push_data(struct sock *sk,
 	max_open_record_len = TLS_MAX_PAYLOAD_SIZE +
 			      prot->prepend_size;
 	do {
-		rc = tls_do_allocation(sk, ctx, pfrag,
-				       prot->prepend_size);
-		if (rc) {
+		rc = tls_do_allocation(sk, ctx, pfrag, prot->prepend_size);
+		if (unlikely(rc)) {
 			rc = sk_stream_wait_memory(sk, &timeo);
 			if (!rc)
 				continue;
-- 
2.21.0