netdev - [PATCH net-next 3/3] tcp: remove unneeded code from tcp_stream_alloc

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Date:   Mon, 25 Oct 2021 15:13:42 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Soheil Hassas Yeganeh <soheil@...gle.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 3/3] tcp: remove unneeded code from tcp_stream_alloc_skb()

From: Eric Dumazet <edumazet@...gle.com>

Aligning @size argument to 4 bytes is not needed.

The header alignment has nothing to do with @size.

It really depends on skb->head alignment and MAX_TCP_HEADER.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/ipv4/tcp.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 121400557fde898283a8eae3b09d93479c4a089e..0a27b7ef1a9db8aea8d98cff4b8ab7092994febd 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -861,9 +861,6 @@ struct sk_buff *tcp_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp,
 {
 	struct sk_buff *skb;
 
-	/* The TCP header must be at least 32-bit aligned.  */
-	size = ALIGN(size, 4);
-
 	if (unlikely(tcp_under_memory_pressure(sk)))
 		sk_mem_reclaim_partial(sk);
 
-- 
2.33.0.1079.g6e70778dc9-goog