From b691f768a1427094f6788a2f4f268ccfe7e9d15b Mon Sep 17 00:00:00 2001 From: Florin Coras Date: Fri, 22 Feb 2019 09:07:20 -0800 Subject: tcp: keep snd sack block free list Instead of constantly reallocating the new sack block list, keep the old one as a reusable free list. Change-Id: Iad79a72204f97b96352c1c6eea66c2839a35cfe6 Signed-off-by: Florin Coras --- src/vnet/tcp/tcp_input.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'src/vnet/tcp/tcp_input.c') diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c index dbe1fc4de87..df8f53d8b7e 100644 --- a/src/vnet/tcp/tcp_input.c +++ b/src/vnet/tcp/tcp_input.c @@ -1714,7 +1714,7 @@ tcp_sack_vector_is_sane (sack_block_t * sacks) void tcp_update_sack_list (tcp_connection_t * tc, u32 start, u32 end) { - sack_block_t *new_list = 0, *block = 0; + sack_block_t *new_list = tc->snd_sacks_fl, *block = 0; int i; /* If the first segment is ooo add it to the list. Last write might've moved @@ -1758,7 +1758,8 @@ tcp_update_sack_list (tcp_connection_t * tc, u32 start, u32 end) ASSERT (vec_len (new_list) <= TCP_MAX_SACK_BLOCKS); /* Replace old vector with new one */ - vec_free (tc->snd_sacks); + vec_reset_length (tc->snd_sacks); + tc->snd_sacks_fl = tc->snd_sacks; tc->snd_sacks = new_list; /* Segments should not 'touch' */ -- cgit 1.2.3-korg