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authorEric Dumazet <edumazet@google.com>2021-09-22 19:26:43 +0200
committerDavid S. Miller <davem@davemloft.net>2021-09-23 12:50:26 +0100
commitd8b81175e412c7abebdb5b37d8a84d5fd19b1aad (patch)
tree1976a34b63ebd315e6741ceb3bf582fe0e63a4bc /net/ipv4/sysctl_net_ipv4.c
parenttcp: make tcp_build_frag() static (diff)
downloadlinux-dev-d8b81175e412c7abebdb5b37d8a84d5fd19b1aad.tar.xz
linux-dev-d8b81175e412c7abebdb5b37d8a84d5fd19b1aad.zip
tcp: remove sk_{tr}x_skb_cache
This reverts the following patches : - commit 2e05fcae83c4 ("tcp: fix compile error if !CONFIG_SYSCTL") - commit 4f661542a402 ("tcp: fix zerocopy and notsent_lowat issues") - commit 472c2e07eef0 ("tcp: add one skb cache for tx") - commit 8b27dae5a2e8 ("tcp: add one skb cache for rx") Having a cache of one skb (in each direction) per TCP socket is fragile, since it can cause a significant increase of memory needs, and not good enough for high speed flows anyway where more than one skb is needed. We want instead to add a generic infrastructure, with more flexible per-cpu caches, for alien NUMA nodes. Acked-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/sysctl_net_ipv4.c')
-rw-r--r--net/ipv4/sysctl_net_ipv4.c12
1 files changed, 0 insertions, 12 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 4680268f2e59..97eb54774924 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -585,18 +585,6 @@ static struct ctl_table ipv4_table[] = {
.extra1 = &sysctl_fib_sync_mem_min,
.extra2 = &sysctl_fib_sync_mem_max,
},
- {
- .procname = "tcp_rx_skb_cache",
- .data = &tcp_rx_skb_cache_key.key,
- .mode = 0644,
- .proc_handler = proc_do_static_key,
- },
- {
- .procname = "tcp_tx_skb_cache",
- .data = &tcp_tx_skb_cache_key.key,
- .mode = 0644,
- .proc_handler = proc_do_static_key,
- },
{ }
};