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-rw-r--r--include/linux/netdevice.h15
1 files changed, 12 insertions, 3 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 536321691c72..d57ce248004c 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2161,7 +2161,11 @@ struct net_device {
struct bpf_prog __rcu *xdp_prog;
unsigned long gro_flush_timeout;
int napi_defer_hard_irqs;
-#define GRO_MAX_SIZE 65536
+#define GRO_LEGACY_MAX_SIZE 65536u
+/* TCP minimal MSS is 8 (TCP_MIN_GSO_SIZE),
+ * and shinfo->gso_segs is a 16bit field.
+ */
+#define GRO_MAX_SIZE (8 * 65535u)
unsigned int gro_max_size;
rx_handler_func_t __rcu *rx_handler;
void __rcu *rx_handler_data;
@@ -2272,12 +2276,17 @@ struct net_device {
const struct rtnl_link_ops *rtnl_link_ops;
/* for setting kernel sock attribute on TCP connection setup */
-#define GSO_MAX_SIZE 65536
+#define GSO_MAX_SEGS 65535u
+#define GSO_LEGACY_MAX_SIZE 65536u
+/* TCP minimal MSS is 8 (TCP_MIN_GSO_SIZE),
+ * and shinfo->gso_segs is a 16bit field.
+ */
+#define GSO_MAX_SIZE (8 * GSO_MAX_SEGS)
+
unsigned int gso_max_size;
#define TSO_LEGACY_MAX_SIZE 65536
#define TSO_MAX_SIZE UINT_MAX
unsigned int tso_max_size;
-#define GSO_MAX_SEGS 65535
u16 gso_max_segs;
#define TSO_MAX_SEGS U16_MAX
u16 tso_max_segs;