Deleting the maxSendBufferSize from fs/host

When I do high-performance networking,
the value of wmem_max is often set very high,
specially for 10/25/50 Gigabit NIC.

I think maybe this restriction is not suitable.

Signed-off-by: Bin Lu <bin.lu@arm.com>

pkg/sentry/fs/host/socket.go

@@ -22,7 +22,6 @@ import (
 	"gvisor.dev/gvisor/pkg/context"
 	"gvisor.dev/gvisor/pkg/fd"
 	"gvisor.dev/gvisor/pkg/fdnotifier"
-	"gvisor.dev/gvisor/pkg/log"
 	"gvisor.dev/gvisor/pkg/refs"
 	"gvisor.dev/gvisor/pkg/sentry/fs"
 	"gvisor.dev/gvisor/pkg/sentry/socket/control"
@@ -39,11 +38,6 @@ import (
 
 // LINT.IfChange
 
-// maxSendBufferSize is the maximum host send buffer size allowed for endpoint.
-//
-// N.B. 8MB is the default maximum on Linux (2 * sysctl_wmem_max).
-const maxSendBufferSize = 8 << 20
-
 // ConnectedEndpoint is a host FD backed implementation of
 // transport.ConnectedEndpoint and transport.Receiver.
 //
@@ -103,10 +97,6 @@ func (c *ConnectedEndpoint) init() *syserr.Error {
 	if err != nil {
 		return syserr.FromError(err)
 	}
-	if sndbuf > maxSendBufferSize {
-		log.Warningf("Socket send buffer too large: %d", sndbuf)
-		return syserr.ErrInvalidEndpointState
-	}
 
 	c.stype = linux.SockType(stype)
 	c.sndbuf = int64(sndbuf)