Daniel Borkmann eea86af6b1 net: sock: adapt SOCK_MIN_RCVBUF and SOCK_MIN_SNDBUF ... The current situation is that SOCK_MIN_RCVBUF is 2048 + sizeof(struct sk_buff)) while SOCK_MIN_SNDBUF is 2048. Since in both cases, skb->truesize is used for sk_{r,w}mem_alloc accounting, we should have both sizes adjusted via defining a TCP_SKB_MIN_TRUESIZE. Further, as Eric Dumazet points out, the minimal skb truesize in transmit path is SKB_TRUESIZE(2048) after commit f07d960df3 ("tcp: avoid frag allocation for small frames"), and tcp_sendmsg() tries to limit skb size to half the congestion window, meaning we try to build two skbs at minimum. Thus, having SOCK_MIN_SNDBUF as 2048 can hit a small regression for some applications setting to low SO_SNDBUF / SO_RCVBUF. Note that we define a TCP_SKB_MIN_TRUESIZE, because SKB_TRUESIZE(2048) adds SKB_DATA_ALIGN(sizeof(struct skb_shared_info)), but in case of TCP skbs, the skb_shared_info is part of the 2048 bytes allocation for skb->head. The minor adaption in sk_stream_moderate_sndbuf() is to silence a warning by using a typed max macro, as similarly done in SOCK_MIN_RCVBUF occurences, that would appear otherwise. Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2013-06-19 21:16:53 -07:00
..
acpi	ACPI / PM: Allow device power states to be used for CONFIG_PM unset	2013-05-22 00:19:28 +02:00
asm-generic	Merge branch 'fixes' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2013-06-11 11:16:43 -07:00
clocksource	ARM: late Exynos multiplatform changes	2013-05-07 11:28:42 -07:00
crypto	crypto: sha512 - Expose generic sha512 routine to be callable from other modules	2013-04-25 21:00:57 +08:00
drm	Merge branch 'drm-radeon-sun-hainan' of git://people.freedesktop.org/~airlied/linux	2013-05-21 08:50:57 -07:00
dt-bindings
keys
linux	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-06-19 16:49:39 -07:00
math-emu
media	Merge branch 'topic/omap3isp' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2013-05-01 09:57:04 -07:00
memory
misc
net	net: sock: adapt SOCK_MIN_RCVBUF and SOCK_MIN_SNDBUF	2013-06-19 21:16:53 -07:00
pcmcia
ras
rdma
rxrpc
scsi	Merge branch 'postmerge' into for-linus	2013-05-10 07:54:01 -07:00
sound	ASoC: dapm: Treat DAI widgets like AIF widgets for power	2013-06-07 15:54:50 +01:00
target	target: Propigate up ->cmd_kref put return via transport_generic_free_cmd	2013-05-31 01:21:23 -07:00
trace	Fixed regressions (two stability regressions and a performance	2013-05-14 09:30:54 -07:00
uapi	openvswitch: Add gre tunnel support.	2013-06-19 18:07:42 -07:00
video	Merge branch 'fbdev-3.10-fixes' of git://gitorious.org/linux-omap-dss2/linux into linux-fbdev/for-3.10-fixes	2013-05-29 17:00:34 +08:00
xen	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-06-05 16:37:30 -07:00
Kbuild	UAPI: remove empty Kbuild files	2013-04-30 17:04:09 -07:00