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1cec170d45
linux/net/mptcp
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Florian Westphal 1cec170d45 mptcp: free acked data before waiting for more memory 
After subflow lock is dropped, more wmem might have been made available.

This fixes a deadlock in mptcp_connect.sh 'mmap' mode: wmem is exhausted.
But as the mptcp socket holds on to already-acked data (for retransmit)
no wakeup will occur.

Using 'goto restart' calls mptcp_clean_una(sk) which will free pages
that have been acked completely in the mean time.

Fixes: fb529e62d3 ("mptcp: break and restart in case mptcp sndbuf is full")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-26 15:48:44 -07:00
..
crypto_test.c mptcp: move crypto test to KUNIT 2020-06-26 16:21:39 -07:00
crypto.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2020-08-05 20:13:21 -07:00
ctrl.c mptcp: enable JOIN requests even if cookies are in use 2020-07-31 16:55:32 -07:00
diag.c mptcp: allow dumping subflow context to userspace 2020-03-29 22:14:48 -07:00
Kconfig mptcp: add MPTCP socket diag interface 2020-07-09 12:38:41 -07:00
Makefile mptcp: enable JOIN requests even if cookies are in use 2020-07-31 16:55:32 -07:00
mib.c mptcp: add and use MIB counter infrastructure 2020-03-29 22:14:49 -07:00
mib.h mptcp: add and use MIB counter infrastructure 2020-03-29 22:14:49 -07:00
mptcp_diag.c mptcp: add MPTCP socket diag interface 2020-07-09 12:38:41 -07:00
options.c mptcp: Skip unnecessary skb extension allocation for bare acks 2020-07-28 17:02:42 -07:00
pm_netlink.c mptcp: add __init annotation on setup functions 2020-06-26 16:21:39 -07:00
pm.c mptcp: use mptcp worker for path management 2020-07-07 13:02:13 -07:00
protocol.c mptcp: free acked data before waiting for more memory 2020-08-26 15:48:44 -07:00
protocol.h mptcp: enable JOIN requests even if cookies are in use 2020-07-31 16:55:32 -07:00
subflow.c mptcp: fix warn at shutdown time for unaccepted msk sockets 2020-08-07 17:26:16 -07:00
syncookies.c mptcp: fix syncookie build error on UP 2020-08-01 11:52:55 -07:00
token_test.c mptcp: introduce token KUNIT self-tests 2020-06-26 16:21:39 -07:00
token.c mptcp: subflow: add mptcp_subflow_init_cookie_req helper 2020-07-31 16:55:32 -07:00