diff options
| author |   Christoph Hellwig <hch@lst.de> | 2020-05-28 07:12:21 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-05-28 11:11:45 -0700 |
| commit | 557eadfcc5ee8f8fa98a795e05ed21db58a65db5 (patch) | |
| tree | 395ea12521c20583d18d69a14b5978953a7fca12 /net/ipv4 | |
| parent | tcp: add tcp_sock_set_quickack (diff) | |
| download | linux-dev-557eadfcc5ee8f8fa98a795e05ed21db58a65db5.tar.xz linux-dev-557eadfcc5ee8f8fa98a795e05ed21db58a65db5.zip | |
tcp: add tcp_sock_set_syncnt
Add a helper to directly set the TCP_SYNCNT sockopt from kernel space
without going through a fake uaccess.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/tcp.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 27b5e7a4e2ef..d2c67ae1da07 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2881,6 +2881,18 @@ void tcp_sock_set_quickack(struct sock *sk, int val) } EXPORT_SYMBOL(tcp_sock_set_quickack); +int tcp_sock_set_syncnt(struct sock *sk, int val) +{ + if (val < 1 || val > MAX_TCP_SYNCNT) + return -EINVAL; + + lock_sock(sk); + inet_csk(sk)->icsk_syn_retries = val; + release_sock(sk); + return 0; +} +EXPORT_SYMBOL(tcp_sock_set_syncnt); + /* * Socket option code for TCP. */ |