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| author | Yutang Jiang <yutang.jiang@nxp.com> | 2016-10-29 00:14:32 +0800 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2016-10-31 17:00:10 +0100 |
| commit | c6c731fe311f7da42777ffd31804a4f6aa3f8e19 (patch) | |
| tree | d92c7296f82d46d1b2da30933a97595f6cb8ad66 /target/linux/layerscape/patches-4.4/7019-net-readd-skb_recycle.patch | |
| parent | a34f96d6cf80c7c3c425076714d9c4caa67e3670 (diff) | |
| download | upstream-c6c731fe311f7da42777ffd31804a4f6aa3f8e19.tar.gz upstream-c6c731fe311f7da42777ffd31804a4f6aa3f8e19.tar.bz2 upstream-c6c731fe311f7da42777ffd31804a4f6aa3f8e19.zip | |
layerscape: add 64b/32b target for ls1043ardb device
Add support for NXP layerscape ls1043ardb 64b/32b Dev board.
LS1043a is an SoC with 4x64-bit up to 1.6 GHz ARMv8 A53 cores.
ls1043ardb support features as: 2GB DDR4, 128MB NOR/512MB NAND, USB3.0, eSDHC,
I2C, GPIO, PCIe/Mini-PCIe, 6x1G/1x10G network port, etc.
64b/32b ls1043ardb target is using 4.4 kernel, and rcw/u-boot/fman images from
NXP QorIQ SDK release.
All of 4.4 kernel patches porting from SDK release or upstream.
QorIQ SDK ISOs can be downloaded from this location:
http://www.nxp.com/products/software-and-tools/run-time-software/linux-sdk/linux-sdk-for-qoriq-processors:SDKLINUX
Signed-off-by: Yutang Jiang <yutang.jiang@nxp.com>
Diffstat (limited to 'target/linux/layerscape/patches-4.4/7019-net-readd-skb_recycle.patch')
| -rw-r--r-- | target/linux/layerscape/patches-4.4/7019-net-readd-skb_recycle.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-4.4/7019-net-readd-skb_recycle.patch b/target/linux/layerscape/patches-4.4/7019-net-readd-skb_recycle.patch new file mode 100644 index 0000000000..062233f18b --- /dev/null +++ b/target/linux/layerscape/patches-4.4/7019-net-readd-skb_recycle.patch @@ -0,0 +1,59 @@ +From abc24ef7a69f54c3317beea98078831ba9bfa2cd Mon Sep 17 00:00:00 2001 +From: Madalin Bucur <madalin.bucur@freescale.com> +Date: Tue, 5 Jan 2016 12:12:07 +0200 +Subject: [PATCH 19/70] net: readd skb_recycle() + +Adding back skb_recycle() as it's used by the DPAA Ethernet driver. +This was removed from the upstream kernel because it was lacking users. + +Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> +--- + include/linux/skbuff.h | 1 + + net/core/skbuff.c | 26 ++++++++++++++++++++++++++ + 2 files changed, 27 insertions(+) + +--- a/include/linux/skbuff.h ++++ b/include/linux/skbuff.h +@@ -799,6 +799,7 @@ void kfree_skb(struct sk_buff *skb); + void kfree_skb_list(struct sk_buff *segs); + void skb_tx_error(struct sk_buff *skb); + void consume_skb(struct sk_buff *skb); ++void skb_recycle(struct sk_buff *skb); + void __kfree_skb(struct sk_buff *skb); + extern struct kmem_cache *skbuff_head_cache; + +--- a/net/core/skbuff.c ++++ b/net/core/skbuff.c +@@ -766,6 +766,32 @@ void consume_skb(struct sk_buff *skb) + } + EXPORT_SYMBOL(consume_skb); + ++/** ++ * skb_recycle - clean up an skb for reuse ++ * @skb: buffer ++ * ++ * Recycles the skb to be reused as a receive buffer. This ++ * function does any necessary reference count dropping, and ++ * cleans up the skbuff as if it just came from __alloc_skb(). ++ */ ++void skb_recycle(struct sk_buff *skb) ++{ ++ struct skb_shared_info *shinfo; ++ u8 head_frag = skb->head_frag; ++ ++ skb_release_head_state(skb); ++ ++ shinfo = skb_shinfo(skb); ++ memset(shinfo, 0, offsetof(struct skb_shared_info, dataref)); ++ atomic_set(&shinfo->dataref, 1); ++ ++ memset(skb, 0, offsetof(struct sk_buff, tail)); ++ skb->data = skb->head + NET_SKB_PAD; ++ skb->head_frag = head_frag; ++ skb_reset_tail_pointer(skb); ++} ++EXPORT_SYMBOL(skb_recycle); ++ + /* Make sure a field is enclosed inside headers_start/headers_end section */ + #define CHECK_SKB_FIELD(field) \ + BUILD_BUG_ON(offsetof(struct sk_buff, field) < \ |