dpdk: Backport to fix build failure for kernel v5.9

kernel/linux/kni/kni_dev.h:104:8: error: too many arguments to function 'get_user_pages_remote'
  104 |  ret = get_user_pages_remote(tsk, tsk->mm, iova, 1,
      |        ^~~~~~~~~~~~~~~~~~~~~

Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>

2 files changed, 56 insertions, 0 deletions

diff --git a/recipes-extended/dpdk/dpdk/0001-Starting-from-Linux-5.9-get_user_pages_remote-API-do.patch b/recipes-extended/dpdk/dpdk/0001-Starting-from-Linux-5.9-get_user_pages_remote-API-do.patch
new file mode 100644
index 0000000..ad6fd93
--- /dev/null
+++ b/recipes-extended/dpdk/dpdk/0001-Starting-from-Linux-5.9-get_user_pages_remote-API-do.patch
@@ -0,0 +1,54 @@
+From 7e0102a6d29732b92c25ca4793d641ce6c98e95a Mon Sep 17 00:00:00 2001
+From: He Zhe <zhe.he@windriver.com>
+Date: Wed, 23 Sep 2020 11:00:03 +0800
+Subject: [PATCH] Starting from Linux 5.9 'get_user_pages_remote()' API doesn't
+ get 'struct task_struct' parameter: commit 64019a2e467a ("mm/gup: remove
+ task_struct pointer for all gup code")
+
+The change reflected to the KNI with version check.
+
+Cc: stable@dpdk.org
+
+Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
+
+Upstream-Status: Backport [https://patches.dpdk.org/patch/75577/]
+
+Signed-off-by: He Zhe <zhe.he@windriver.com>
+---
+ kernel/linux/kni/compat.h  | 4 ++++
+ kernel/linux/kni/kni_dev.h | 5 +++++
+ 2 files changed, 9 insertions(+)
+
+diff --git a/kernel/linux/kni/compat.h b/kernel/linux/kni/compat.h
+index 9ee45dbf6..d515b2766 100644
+--- a/kernel/linux/kni/compat.h
++++ b/kernel/linux/kni/compat.h
+@@ -134,3 +134,7 @@
+ #if KERNEL_VERSION(5, 6, 0) <= LINUX_VERSION_CODE
+ #define HAVE_TX_TIMEOUT_TXQUEUE
+ #endif
++
++#if KERNEL_VERSION(5, 9, 0) > LINUX_VERSION_CODE
++#define HAVE_TSK_IN_GUP
++#endif
+diff --git a/kernel/linux/kni/kni_dev.h b/kernel/linux/kni/kni_dev.h
+index ca5f92a47..c15da311b 100644
+--- a/kernel/linux/kni/kni_dev.h
++++ b/kernel/linux/kni/kni_dev.h
+@@ -101,8 +101,13 @@ static inline phys_addr_t iova_to_phys(struct task_struct *tsk,
+        offset = iova & (PAGE_SIZE - 1);
+ 
+        /* Read one page struct info */
++#ifdef HAVE_TSK_IN_GUP
+        ret = get_user_pages_remote(tsk, tsk->mm, iova, 1,
+                                    FOLL_TOUCH, &page, NULL, NULL);
++#else
++       ret = get_user_pages_remote(tsk->mm, iova, 1,
++                                   FOLL_TOUCH, &page, NULL, NULL);
++#endif
+        if (ret < 0)
+                return 0;
+ 
+-- 
+2.17.1
+
diff --git a/recipes-extended/dpdk/dpdk_19.11.3.bb b/recipes-extended/dpdk/dpdk_19.11.3.bb
index 842d75d..d950ba7 100644
--- a/recipes-extended/dpdk/dpdk_19.11.3.bb
+++ b/recipes-extended/dpdk/dpdk_19.11.3.bb
@@ -12,6 +12,8 @@ LIC_FILES_CHKSUM = "file://license/gpl-2.0.txt;md5=b234ee4d69f5fce4486a80fdaf4a4
                     file://license/lgpl-2.1.txt;md5=4b54a1fd55a448865a0b32d41598759d \
                     file://license/bsd-3-clause.txt;md5=0f00d99239d922ffd13cabef83b33444"
 
+SRC_URI += "file://0001-Starting-from-Linux-5.9-get_user_pages_remote-API-do.patch"
+
 do_install_append () {
     # Remove the unneeded dir
     rm -rf ${D}/${INSTALL_PATH}/${RTE_TARGET}/app