[dpdk-dev] [PATCH] Fix KNI compilation under Wind River Linux 6.0 recent RCPLs.

[Lee Roberts <lee.roberts@hpe.com>]

skb_set_hash() has been backported to recent Wind River Linux 6.0 RCPLs.
As a result, the corresponding stanza in kcompat.h must be removed.
Similar patches have already been applied for RHEL, SLES and Ubuntu.

Wind River Linux does not provide convenient macros for kernel version
identification.  Add macros to Makefile to identify the Wind River Linux
version.

Signed-off-by: Lee Roberts <lee.roberts@hpe.com>
---
 lib/librte_eal/linuxapp/kni/Makefile              |  8 ++++++++
 lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h | 13 +++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/lib/librte_eal/linuxapp/kni/Makefile b/lib/librte_eal/linuxapp/kni/Makefile
index ac99d3f..6310615 100644
--- a/lib/librte_eal/linuxapp/kni/Makefile
+++ b/lib/librte_eal/linuxapp/kni/Makefile
@@ -51,6 +51,14 @@ UBUNTU_KERNEL_CODE := $(shell echo `grep UTS_RELEASE $(RTE_KERNELDIR)/include/ge
 MODULE_CFLAGS += -D"UBUNTU_KERNEL_CODE=UBUNTU_KERNEL_VERSION($(UBUNTU_KERNEL_CODE))"
 endif
 
+ifeq ($(shell lsb_release -si 2>/dev/null),wrlinux)
+WRLINUX_MAJOR := $(shell lsb_release -sr | cut -d. -f1)
+WRLINUX_MINOR := $(shell lsb_release -sr | cut -d. -f2)
+WRLINUX_RCPL  := $(shell lsb_release -sr | cut -d. -f4)
+MODULE_CFLAGS += -D"WRLINUX_RELEASE_CODE=WRLINUX_RELEASE_VERSION($(WRLINUX_MAJOR),$(WRLINUX_MINOR))"
+MODULE_CFLAGS += -D"WRLINUX_RCPL=$(WRLINUX_RCPL)"
+endif
+
 # this lib needs main eal
 DEPDIRS-y += lib/librte_eal/linuxapp/eal
 
diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h b/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
index e2cf71e..b25a35f 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
+++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/kcompat.h
@@ -730,6 +730,17 @@ struct _kc_ethtool_pauseparam {
 #define UBUNTU_KERNEL_CODE 0
 #endif
 
+/* Wind River release codes must be specified from Makefile */
+#ifndef WRLINUX_RELEASE_VERSION
+#define WRLINUX_RELEASE_VERSION(a,b) (((a) * 256) + (b))
+#endif
+#ifndef WRLINUX_RELEASE_CODE
+#define WRLINUX_RELEASE_CODE 0
+#endif
+#ifndef WRLINUX_RCPL
+#define WRLINUX_RCPL 0
+#endif
+
 #ifdef __KLOCWORK__
 #ifdef ARRAY_SIZE
 #undef ARRAY_SIZE
@@ -3868,6 +3879,7 @@ static inline struct sk_buff *__kc__vlan_hwaccel_put_tag(struct sk_buff *skb,
     && (UBUNTU_RELEASE_CODE == UBUNTU_RELEASE_VERSION(12,4) \
      || UBUNTU_RELEASE_CODE == UBUNTU_RELEASE_VERSION(14,4))))
 #if (!(SLE_VERSION_CODE == SLE_VERSION(12,0,0)))
+#if (!(WRLINUX_RELEASE_CODE == WRLINUX_RELEASE_VERSION(6,0) && WRLINUX_RCPL >= 26))
 #ifdef NETIF_F_RXHASH
 #define PKT_HASH_TYPE_L3 0
 static inline void
@@ -3876,6 +3888,7 @@ skb_set_hash(struct sk_buff *skb, __u32 hash, __always_unused int type)
 	skb->rxhash = hash;
 }
 #endif /* NETIF_F_RXHASH */
+#endif /* < WRLINUX */
 #endif /* < SLES12 */
 #endif /* < 3.13.0-30.54 (Ubuntu 14.04) */
 #endif /* < RHEL7 */
-- 
1.9.1