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authorMichał Mirosław <mirq-linux@rere.qmqm.pl>2011-11-15 19:29:55 +0400
committerDavid S. Miller <davem@davemloft.net>2011-11-17 02:43:12 +0400
commit34324dc2bf27c1773045fea63cb11f7e2a6ad2b9 (patch)
tree47cd1f4ea5590c405dc60aee70b49fb14f56859b /include/linux/netdev_features.h
parenta861a8b233e9024303fb8e73e465e81ad7119d5a (diff)
downloadlinux-34324dc2bf27c1773045fea63cb11f7e2a6ad2b9.tar.xz
net: remove NETIF_F_NO_CSUM feature bit
Only distinct use is checking if NETIF_F_NOCACHE_COPY should be enabled by default. The check heuristics is altered a bit here, so it hits other people than before. The default shouldn't be trusted for performance-critical cases anyway. For all other uses NETIF_F_NO_CSUM is equivalent to NETIF_F_HW_CSUM. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/netdev_features.h')
-rw-r--r--include/linux/netdev_features.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 20e3a1f9892d..77f5202977ce 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -17,7 +17,7 @@ typedef u64 netdev_features_t;
enum {
NETIF_F_SG_BIT, /* Scatter/gather IO. */
NETIF_F_IP_CSUM_BIT, /* Can checksum TCP/UDP over IPv4. */
- NETIF_F_NO_CSUM_BIT, /* Does not require checksum. F.e. loopack. */
+ __UNUSED_NETIF_F_1,
NETIF_F_HW_CSUM_BIT, /* Can checksum all the packets. */
NETIF_F_IPV6_CSUM_BIT, /* Can checksum TCP/UDP over IPV6 */
NETIF_F_HIGHDMA_BIT, /* Can DMA to high memory. */
@@ -88,7 +88,6 @@ enum {
#define NETIF_F_LRO __NETIF_F(LRO)
#define NETIF_F_NETNS_LOCAL __NETIF_F(NETNS_LOCAL)
#define NETIF_F_NOCACHE_COPY __NETIF_F(NOCACHE_COPY)
-#define NETIF_F_NO_CSUM __NETIF_F(NO_CSUM)
#define NETIF_F_NTUPLE __NETIF_F(NTUPLE)
#define NETIF_F_RXCSUM __NETIF_F(RXCSUM)
#define NETIF_F_RXHASH __NETIF_F(RXHASH)
@@ -118,7 +117,7 @@ enum {
#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \
NETIF_F_TSO6 | NETIF_F_UFO)
-#define NETIF_F_GEN_CSUM (NETIF_F_HW_CSUM | NETIF_F_NO_CSUM)
+#define NETIF_F_GEN_CSUM NETIF_F_HW_CSUM
#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)