[PATCH net-next 4/7] tcp: no longer set skb->reserved_tailroom
From: Eric Dumazet <hidden>
Date: 2021-10-27 20:19:35
Subsystem:
networking [general], networking [mptcp], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Matthieu Baerts, Mat Martineau, Neal Cardwell, Linus Torvalds
From: Eric Dumazet <edumazet@google.com> TCP/MPTCP sendmsg() no longer puts payload in skb->head, we can remove not needed code. Signed-off-by: Eric Dumazet <edumazet@google.com> --- net/ipv4/tcp.c | 5 ----- net/mptcp/protocol.c | 1 - 2 files changed, 6 deletions(-)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 68b946cfd433720a034c2023a13c086428646c51..66ed0d79f41472f013edffe19802441e995175c9 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c@@ -876,11 +876,6 @@ struct sk_buff *tcp_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp, } if (likely(mem_scheduled)) { skb_reserve(skb, MAX_TCP_HEADER); - /* - * Make sure that we have exactly size bytes - * available to the caller, no more, no less. - */ - skb->reserved_tailroom = skb->end - skb->tail - size; INIT_LIST_HEAD(&skb->tcp_tsorted_anchor); return skb; }
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index ccd62a2727c36a749455d122c106b4c5f76ef2ba..22c7d10db15f8321e988602b8c97a46ffd872298 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c@@ -1218,7 +1218,6 @@ static struct sk_buff *__mptcp_do_alloc_tx_skb(struct sock *sk, gfp_t gfp) if (likely(skb)) { if (likely(__mptcp_add_ext(skb, gfp))) { skb_reserve(skb, MAX_TCP_HEADER); - skb->reserved_tailroom = skb->end - skb->tail; INIT_LIST_HEAD(&skb->tcp_tsorted_anchor); return skb; }
--
2.33.0.1079.g6e70778dc9-goog