git: 5d0498db4782 - main - nvmf_tcp: Rename max_c2hdata sysctl to max_transmit_data

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=5d0498db478253c42b5e4140b9aff8596a797464

commit 5d0498db478253c42b5e4140b9aff8596a797464
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2024-07-25 19:29:43 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2024-07-25 19:29:43 +0000

    nvmf_tcp: Rename max_c2hdata sysctl to max_transmit_data
    
    This sysctl sets a cap on the maximum payload of transmitted data PDUs
    including both C2H_DATA and H2C_DATA PDUs, not just C2H_DATA PDUs.
    
    Sponsored by:   Chelsio Communications
---
 share/man/man4/nvmf_tcp.4 | 15 +++++++++++----
 sys/dev/nvmf/nvmf_tcp.c   |  2 +-
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/share/man/man4/nvmf_tcp.4 b/share/man/man4/nvmf_tcp.4
index 4d77997c19a2..0a650e342f0e 100644
--- a/share/man/man4/nvmf_tcp.4
+++ b/share/man/man4/nvmf_tcp.4
@@ -3,7 +3,7 @@
 .\"
 .\" Copyright (c) 2024 Chelsio Communications, Inc.
 .\"
-.Dd May 2, 2024
+.Dd July 25, 2024
 .Dt NVMF_TCP 4
 .Os
 .Sh NAME
@@ -35,10 +35,17 @@ variables and
 .Xr loader 8
 tunables:
 .Bl -tag -width indent
-.It Va kern.nvmf.tcp.max_c2hdata
-The maximum data payload size of a
+.It Va kern.nvmf.tcp.max_transmit_data
+The maximum data payload size of
 .Va C2H_DATA
-PDU sent by the controller to a remote host.
+and
+.Va H2C_DATA
+PDUs.
+A remote controller may enforce a lower limit on the size of
+.Va H2C_DATA
+PDUs via the
+.Va MAXH2CDATA
+parameter.
 The default size is 256 kilobytes.
 .El
 .Sh SEE ALSO
diff --git a/sys/dev/nvmf/nvmf_tcp.c b/sys/dev/nvmf/nvmf_tcp.c
index 57c81eceee02..8f1b3bf01e39 100644
--- a/sys/dev/nvmf/nvmf_tcp.c
+++ b/sys/dev/nvmf/nvmf_tcp.c
@@ -138,7 +138,7 @@ static void	tcp_free_qpair(struct nvmf_qpair *nq);
 SYSCTL_NODE(_kern_nvmf, OID_AUTO, tcp, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
     "TCP transport");
 static u_int tcp_max_transmit_data = 256 * 1024;
-SYSCTL_UINT(_kern_nvmf_tcp, OID_AUTO, max_c2hdata, CTLFLAG_RWTUN,
+SYSCTL_UINT(_kern_nvmf_tcp, OID_AUTO, max_transmit_data, CTLFLAG_RWTUN,
     &tcp_max_transmit_data, 0,
     "Maximum size of data payload in a transmitted PDU");