Merge ed6f39bae8 into 385f80f4ef

If the number of elements to be added to or removed from a set is large,
they may not all fit into one message, because the size field of a
netlink attribute is a uint16 and would overflow. To support this case,
the elements need to be split into multiple batches.

set.go

@@ -18,6 +18,7 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
+	"math"
 	"strings"
 	"time"
 
@@ -395,7 +396,7 @@ func (cc *Conn) SetDeleteElements(s *Set, vals []SetElement) error {
 // maxElemBatchSize is the maximum size in bytes of encoded set elements which
 // are sent in one netlink message. The size field of a netlink attribute is a
 // uint16, and 1024 bytes is more than enough for the per-message headers.
-const maxElemBatchSize = 0x10000 - 1024
+const maxElemBatchSize = math.MaxUint16 - 1024
 
 func (cc *Conn) appendElemList(s *Set, vals []SetElement, hdrType uint16) error {
 	if len(vals) == 0 {