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Filename Latest commit message Latest commit date
Yuchung Cheng b451e5d24b tcp: avoid fragmenting peculiar skbs in SACK
This patch fixes a bug in splitting an SKB during SACK
processing. Specifically if an skb contains multiple
packets and is only partially sacked in the higher sequences,
tcp_match_sack_to_skb() splits the skb and marks the second fragment
as SACKed.

The current code further attempts rounding up the first fragment
to MSS boundaries. But it misses a boundary condition when the
rounded-up fragment size (pkt_len) is exactly skb size.  Spliting
such an skb is pointless and causses a kernel warning and aborts
the SACK processing. This patch universally checks such over-split
before calling tcp_fragment to prevent these unnecessary warnings.

Fixes: adb92db857 ("tcp: Make SACK code to split only at mss boundaries")
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-11 21:35:20 -04:00
arch bpf, arm64: fix faulty emission of map access in tail calls 2017-05-11 12:41:31 -04:00
block
certs
crypto
Documentation dmaengine updates for 4.12-rc1 2017-05-09 15:40:28 -07:00
drivers net: ethernet: ti: netcp_core: return error while dma channel open issue 2017-05-11 12:39:34 -04:00
firmware
fs
include xdp: refine xdp api with regards to generic xdp 2017-05-11 21:30:57 -04:00
init
ipc
kernel bpf: Add strict alignment flag for BPF_PROG_LOAD. 2017-05-11 14:19:00 -04:00
lib dmaengine updates for 4.12-rc1 2017-05-09 15:40:28 -07:00
mm
net tcp: avoid fragmenting peculiar skbs in SACK 2017-05-11 21:35:20 -04:00
samples xdp: add flag to enforce driver mode 2017-05-11 21:30:57 -04:00
scripts
security
sound
tools bpf: Provide a linux/types.h override for bpf selftests. 2017-05-11 12:00:50 -07:00
usr
virt
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
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README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.