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| author | rwatson <rwatson@FreeBSD.org> | 2006-03-26 22:44:37 +0000 |
|---|---|---|
| committer | rwatson <rwatson@FreeBSD.org> | 2006-03-26 22:44:37 +0000 |
| commit | ebefd0941153ad65b8e1e9ce6921455e33c8caa8 (patch) | |
| tree | ee30ac31e494ef573bf1da800de0aa3811ecf63a | |
| parent | 4aeee474e68d6e6cd3a6b373d368d90c57cd0f9a (diff) | |
| download | FreeBSD-src-ebefd0941153ad65b8e1e9ce6921455e33c8caa8.zip FreeBSD-src-ebefd0941153ad65b8e1e9ce6921455e33c8caa8.tar.gz | |
Add a sysctl, regression.sonewconn_earlytest, which when options
REGRESSION is enabled, allows user space to dictate that sonewconn()
should skip it's "skip the hard work" check to see if the listen
queue is full, and instead proceed with allocation of a socket and
trimming of the overflowed queue. This makes it easier to test the
queue overflow logic.
MFC after: 1 month
| -rw-r--r-- | sys/kern/uipc_sockbuf.c | 10 | ||||
| -rw-r--r-- | sys/kern/uipc_socket2.c | 10 |
2 files changed, 20 insertions, 0 deletions
diff --git a/sys/kern/uipc_sockbuf.c b/sys/kern/uipc_sockbuf.c index bdeb344..32f3b8c 100644 --- a/sys/kern/uipc_sockbuf.c +++ b/sys/kern/uipc_sockbuf.c @@ -70,6 +70,12 @@ static u_long sb_max_adj = static u_long sb_efficiency = 8; /* parameter for sbreserve() */ +#ifdef REGRESSION +static int regression_sonewconn_earlytest = 1; +SYSCTL_INT(_regression, OID_AUTO, sonewconn_earlytest, CTLFLAG_RW, + ®ression_sonewconn_earlytest, 0, "Perform early sonewconn limit test"); +#endif + /* * Procedures to manipulate state flags of socket * and do appropriate wakeups. Normal sequence from the @@ -215,7 +221,11 @@ sonewconn(head, connstatus) ACCEPT_LOCK(); over = (head->so_qlen > 3 * head->so_qlimit / 2); ACCEPT_UNLOCK(); +#ifdef REGRESSION + if (regression_sonewconn_earlytest && over) +#else if (over) +#endif return (NULL); so = soalloc(M_NOWAIT); if (so == NULL) diff --git a/sys/kern/uipc_socket2.c b/sys/kern/uipc_socket2.c index bdeb344..32f3b8c 100644 --- a/sys/kern/uipc_socket2.c +++ b/sys/kern/uipc_socket2.c @@ -70,6 +70,12 @@ static u_long sb_max_adj = static u_long sb_efficiency = 8; /* parameter for sbreserve() */ +#ifdef REGRESSION +static int regression_sonewconn_earlytest = 1; +SYSCTL_INT(_regression, OID_AUTO, sonewconn_earlytest, CTLFLAG_RW, + ®ression_sonewconn_earlytest, 0, "Perform early sonewconn limit test"); +#endif + /* * Procedures to manipulate state flags of socket * and do appropriate wakeups. Normal sequence from the @@ -215,7 +221,11 @@ sonewconn(head, connstatus) ACCEPT_LOCK(); over = (head->so_qlen > 3 * head->so_qlimit / 2); ACCEPT_UNLOCK(); +#ifdef REGRESSION + if (regression_sonewconn_earlytest && over) +#else if (over) +#endif return (NULL); so = soalloc(M_NOWAIT); if (so == NULL) |
